CN114667963B

CN114667963B - Device for evaluating drug addiction of non-human primate

Info

Publication number: CN114667963B
Application number: CN202011553692.4A
Authority: CN
Inventors: 熊志奇; 翟荣伟
Original assignee: Center for Excellence in Brain Science and Intelligence Technology Chinese Academy of Sciences
Current assignee: Center for Excellence in Brain Science and Intelligence Technology Chinese Academy of Sciences
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2024-04-26
Anticipated expiration: 2040-12-24
Also published as: CN114667963A

Abstract

The invention provides a primate drug addiction evaluation device. In view of the technical defect that the prior art has no recognized technical defect for evaluating the drug addiction of primates, the invention provides a device for evaluating the drug addiction of primates, and the device can be used for evaluating whether the primates have the drug addiction and the strength of the drug to be tested in a small time.

Description

Device for evaluating drug addiction of non-human primate

Technical Field

The invention belongs to the field of neuroscience and mechanical devices; more particularly, the present invention relates to an apparatus for non-human primate drug addiction assessment.

Background

Drug addiction is a chronic recurrent brain disease and is characterized by compulsive, uncontrolled medication and recurrent re-inhalation. Repeated use of addictive substances by an individual will produce physical and/or mental dependency. Drug addiction has become a major public health and social problem that plagues human health and social development.

Scientific evaluation of drug addiction is helpful for preventing drug abuse and realizing clinically reasonable medication, and is an indispensable step for transforming new drugs from basic research to clinical application. The most effective animal model for researching drug addiction is self-administration model, and the common model animals are big and small mice. Since rodents have obvious differences from primates in the anatomy, projection loop, neurotransmitter and receptor system, etc. of brain regions related to drug addiction, rodent models have obvious limitations in the popularization and transformation of addiction research results. Non-human primates are highly similar in anatomy, development, and function to the human nervous system. Thus, the non-human primate self-administration model is the best model for assessing primate drug addiction.

However, at present, there is no standard and widely accepted device for assessing drug addiction in primates at home and abroad. Those skilled in the art find that the difficulties in developing such devices are manifold, mainly including the inability of non-human primate habits to catch, making it difficult for some research models to obtain stable results; lack of typical, high efficiency monitoring metrics, etc.

In summary, there is a need in the art to develop novel devices for non-human primate drug addiction assessment in an effort to develop relatively robust assessment techniques for non-human primate drug addiction assessment in a controlled, standardized manner.

Disclosure of Invention

The term "primate" as used herein refers to a non-human primate, excluding humans.

The invention aims to provide a device for evaluating drug addiction of primates.

In a first aspect, the present invention provides a device for primate drug addiction assessment, comprising an operation box main body capable of containing a test animal and an animal fixing system; the operation box main body comprises: the system comprises an interaction module, an input module, an output module, a reward module, a monitoring module, a vital sign monitoring module and a record-control module; the interaction module is used for interacting with animals and comprises an interaction panel, wherein an input module, an output module, a reward module or a part of components (animal interaction related components) of the monitoring module are arranged on the interaction panel; the reward module includes: a solid reward sub-module, a liquid reward sub-module, and an automatic administration sub-module.

In another aspect of the invention, there is provided the use of the device for primate drug addiction assessment, for use in aspects including, but not limited to: self-administration reinforcement training of primates; primate drug reward effect assessment; assessment of primate drug behavior uncontrolled effects; primate drug craving assessment; primate drug tolerance effect assessment; and/or, primate drug adverse use level assessment.

Other aspects of the invention will be apparent to those skilled in the art in view of the disclosure herein.

Drawings

Fig. 1 is a perspective view of one embodiment of the primate addiction assessment device of the present invention.

FIG. 2 is a schematic structural view of one embodiment of an interactive panel of the present invention.

FIG. 3 is a schematic diagram of an embodiment of a compression bar module according to the present invention.

Fig. 4 is a front view of one embodiment of the primate addiction assessment device of the present invention.

Fig. 5 is a rear view of one embodiment of the primate addiction assessment device of the present invention.

FIGS. 6a to j show results of evaluation of craving for methamphetamine in cynomolgus monkey according to example 2 of the present invention.

FIGS. 7a to c show results of evaluation of addiction to physiological saline of cynomolgus monkeys in example 3 of the present invention. In the figures, mg/kg/inj, ug/kg/inj refer to the amount of mg or ug per kg of animal body weight per injection.

The reference numerals are described as follows: 1-operation box main body, 2-recording-control module (computer recording and control module), 3-operation box door, 4-air exchanging opening, 5-lighting component (such as lighting lamp), 6-behavior monitoring sub-module (such as camera), 7-temperature probe, 8-interactive panel, 9-pressure bar module, 10-touch screen module, 11-prompting lamp, 12-solid rewarding sub-module, 13-head face monitoring sub-module, 14-loudspeaker (buzzer), 15-blowing (air-puff) module, 16-liquid rewarding sub-module, 17-automatic medicine feeding sub-module, 18-food groove, 19-temperature measuring module (such as infrared thermometer), 20-probe hole (such as infrared probe hole), 21-slide rail, 22-pulley, 23-pressure bar box, 24-pressure bar plate, 25-micro switch, 26-bar box dynamometer, 27-micro switch supporting plate.

Detailed Description

The inventor of the present invention has conducted intensive studies and has revealed a device for primate drug addiction evaluation, which comprises an interaction module, an input module, an output module, a reward module, a monitoring module, a vital sign monitoring module and a record-control module. Through intensive research and observation of primates, the inventor organically combines and distributes all components at proper positions, so that stable and accurate animal drug addiction evaluation can be realized.

As used herein, the term "operatively connected" means that two or more elements (components) belonging to the apparatus (evaluation system) of the present invention can be interconnected, thereby realizing information transmission, signal transmission and reception, signal feedback, signal storage, data processing/analysis, etc., and achieving orderly operation. The "operative communication" may be achieved, for example, by a cable.

As used herein, the term "primate" includes non-human primates; preferred include animals selected from (but not limited to) the group consisting of: monkey, gibbon, gorilla; preferably, the monkey comprises a monkey selected from the group consisting of: rhesus, cynomolgus, macaque, green monkey, marmoset and squirrel monkey.

As used herein, the term "animal interaction related component" refers to a component of the apparatus of the present invention that is adapted to be integrated onto the interaction panel to facilitate interaction with an animal; preferably, it comprises: the system comprises a compression bar module and a touch screen module in an input module, a prompt lamp in an output module, a solid rewarding sub-module in a rewarding module and/or a head and face monitoring sub-module of a monitoring module.

Device for evaluating drug addiction

The invention provides a device for evaluating drug addiction of primates, which comprises an interaction module, an input module, an output module, a reward module, a monitoring module, a vital sign monitoring module and a record-control module; preferably, the device further comprises an animal fixation system suitable for primates.

(1) Primate self-administration system assembly

The device of the present invention comprises primate self-administration system components including an operator box body, an interaction module, an input module, an output module, a record-control module (preferably a computer record-control module), a reward module, a monitoring module and a vital sign monitoring module.

The operation box main body of the invention is used for accommodating primates, and experimental equipment for testing animal behaviors, cognition and the like is arranged in the operation box main body. The operation box main body can be arranged to at least comprise one operation box door. In the preferred mode of the invention, the operation box door is of a single-door design, and the design is simpler in structure, lower in cost and better in sound insulation effect compared with a multi-door and/or multi-door design, and can effectively reduce the interference of the outside on experiments.

In a preferred mode of the invention, the box wall of the operation box main body is provided with the air exchanging port, and the inside of the box main body is provided with the lighting component (such as a lighting lamp), the behavior monitoring module (a camera) and the temperature probe so as to monitor and regulate the temperature in the box and provide a comfortable experimental environment for the primates.

The inventor observes the life habit of non-human primate through research, designs the operation box main body size suitable for non-human primate. In a preferred mode of the invention, the box body of the operation box main body is 500-1200 mm long, 500-1200 mm wide and 1000-2000 mm high; preferably 650-1000 mm long, 650-1000 mm wide and 1200-1800 mm high; more preferably 700 to 900mm in length, 700 to 900mm in width and 1350 to 1650mm in height. The internal space can effectively avoid anxiety, tension and unease of primates caused by space problems, and can obtain ideal and stable experimental test results.

In a preferred embodiment of the present invention, the console box main body of the present invention contains a sound insulating material or is mainly prepared from a sound insulating material.

The interaction module is used for realizing interaction between the primate and the primate self-administration system component, and comprises experimental equipment on an interaction panel and experimental equipment in a box body, and the module can be connected with the recording-control module through a cable. In a preferred form of the invention, the interactive panel is located on a face of the operator's compartment body remote from the compartment door (i.e. the opposite face of the compartment door). In a preferred embodiment of the present invention, the panel material may be a stainless steel material.

In a preferred mode of the invention, the interactive panel is provided with a compression bar module and a touch screen module in an input module, a prompt lamp in an output module, a solid prize sub-module in a prize module and a head and face monitoring sub-module in a monitoring module. The experimental equipment on the interactive panel can be connected with the record-control module through a cable. Preferably, the indicator lights comprise at least one left indicator light and at least one right indicator light, and are respectively arranged at the left side and the right side of the vertical center line of the interactive panel, and at least one upper indicator light; preferably, the left indicator light and the right indicator light are respectively positioned above the left compression bar and the right compression bar; more preferably, the left indicator light and the right indicator light are different in color (e.g., red or green), and the upper indicator light is different in color (e.g., white) from the left indicator light and the right indicator light.

In a preferred mode of the invention, the input module comprises a compression bar module and a touch screen module. The pressure bar module comprises a left pressure bar and a right pressure bar which are respectively positioned on the left side and the right side of the vertical midline of the interactive panel. The pressure bar module comprises a pressure bar box, a pressure bar plate, a micro switch, a strip box dynamometer and a micro switch supporting plate. Preferably, the pressure bar box is mounted on the interaction panel through a mounting (such as a bolt mounting), the bar box dynamometer is mounted on the pressure bar box through a mounting (such as a bolt mounting), and the pressure bar plate is mounted in the pressure bar box through the bar box dynamometer and is connected with the micro switch. The strip-shaped box dynamometer can achieve resetting of the pressure bar plate, the pressure bar plate is partially exposed out of the interactive panel, and the exposed part of the pressure bar plate is located in the box body and is used for being pressed by primates. Preferably, the microswitch carrier is mounted (e.g. by bolts) within the plunger box below the plunger plate. Preferably, the micro-switch is mounted to the micro-switch carrier and is connected to a recording-control module (preferably a computer recording and control module) for transmitting the number of press bars and the duration of a single press. The vertical distance between the lower edge of the bar-shaped box dynamometer shaft and the micro switch can be used for adjusting the resistance of the pressing rod, the adjustable range of the resistance is 0-10N, and the range is set according to the strength of the forelimb of the non-human primate. The rewarding difficulty is obtained by adjusting the resistance of the pressure lever, so that the learning of the operation of the pressure lever is facilitated, and an index of a rewarding motivation is obtained intuitively and reliably in a quantized mode. The present inventors have for the first time performed such a plunger resistance adjustable function design, which was not reported and disclosed in the art.

In a preferred form of the invention, the touch screen module is centrally located on the interactive panel and between the two side struts. The inventor applies the touch screen module to the addiction evaluation of non-human primate for the first time, and compared with the evaluation mode of a single input module applying the compression bar module, the design adds a new visual input mode based on vision, the input mode realizes the diversification of visual stimulation patterns and space positions, and the combination with the compression bar module can realize the adjustment of task complexity and difficulty. Meanwhile, a classical experimental paradigm designed based on a touch screen module can be used for dynamically monitoring the cognitive ability and the motor ability state of a tested animal, and the aspect is very important for animal behavior detection, and particularly relates to the intake of addictive substances such as drugs and the like capable of causing acute cognitive and motor ability to change.

The touch screen is optimally arranged after the intensive behavior analysis of the primate. Visual stimuli output by the touch screen have the advantage of being diverse in spatial location and style. The application of the touch screen module has significant advantages over devices without the touch screen module, and meets the actual demands of output diversification faced by current primate research.

In a preferred form of the invention, the output module includes a warning light, a horn, and a blow-in (air-throw) module. The output module can also be matched with the visual stimulus output of the touch screen module.

In a preferred mode of the invention, the indicator lights comprise a left indicator light positioned on the interaction panel and right indicator light positioned on the right, the left indicator light and the right indicator light positioned on the vertical center line and near the upper edge of the interaction panel. The prompting lamp is used for realizing light stimulation on primates; preferably, the left and right indicator lights are respectively located right above the left and right compression bars, for example, one of red or green, but the colors of the two indicator lights are different; it should be understood that lamps of other colors are possible as long as the left and right colors are different; the upper indicator lights are located directly above the touch screen module, which are generally different in color from the left and right indicator lights, preferably white.

The location of the horn is not particularly limited, and may be located on the operation box wall or on the interactive panel for outputting sound stimulus.

In a preferred form of the invention, the air-blowing (air-puff) module is located outside the operator's compartment and generates an air flow of a specified duration, speed and flow rate, with the stimulation of the air flow to the primate face being achieved by the connecting duct.

The recording-controlling module is positioned outside the box body and can be connected with an experimental instrument through a cable, and is used for recording data input of the input module, the monitoring module and the vital sign monitoring module and controlling operation of the rewarding module and the output module.

In a preferred mode of the invention, the reward module comprises a solid reward sub-module, a liquid reward sub-module and an automatic administration (such as intravenous injection) sub-module, and can be connected with the record-control module through a cable to realize the control of feeding solid, liquid rewards or automatic administration of drugs to the primate. Preferably, the solid reward submodule comprises a particle pump, a pipeline and a trough, wherein the particle pump and the pipeline are positioned outside the box body and controlled by the record-control module to deliver a preset solid food amount or a drug particle amount to the primate. Preferably, the trough is located in the center of the interactive panel. Preferably, the liquid reward sub-module comprises a syringe pump/peristaltic pump and tubing, located outside the housing, the syringe pump/peristaltic pump being connected to the primate mouth through tubing and controlled by the record-control module to deliver a predetermined amount of liquid to the primate. The automatic drug delivery submodule comprises an injection pump/peristaltic pump and a pipeline, the injection pump/peristaltic pump is positioned outside the box body, is connected to the primate body through the pipeline and is controlled by the recording-control module, and the physical force of the primate body is injected with a preset drug quantity. In the invention, the three reward submodules are utilized for training and evaluating animals for the first time, so that diversified animal training and drug administration evaluation can be realized.

In a preferred form of the invention, the monitoring module comprises a behaviour monitoring sub-module located on the wall of the tank and a head-to-face monitoring sub-module located on the interactive panel. Preferably, the behavior monitoring sub-module is configured to monitor all behaviors of the primate, and the head-to-face monitoring sub-module is configured to monitor head movements and facial expressions (reflecting emotion, such as happiness, anger, sadness, fear, etc.) of the primate. The data of head movements and facial expressions will be used not only as part of the experimental data, but also as important parameters for controlling the experimental progress, the fear of expression of the primate face is monitored during the experimental procedure, and the record-control module will immediately terminate the experimental procedure.

In a preferred form of the invention, the vital sign monitoring module is located outside the operator box and includes a thermometry module (e.g., an infrared thermometer) and probe apertures in the operator box wall. The temperature measuring module (such as an infrared thermometer) can dynamically monitor the body temperature of the primate in real time, the data is not only used as a part of experimental data, but also used as an important parameter for controlling the experimental process, for example, when the body temperature of the primate exceeds the normal value range in the experimental process, the recording-controlling module immediately terminates the experimental process. The invention provides the application of the vital sign monitoring module for the first time, and organically combines the vital sign monitoring module into an integral evaluation system.

In a preferred form of the invention, the automated administration module further comprises a line having one end located within the primate body surface skin and the other end connected to the syringe pump.

In a preferred form of the invention, the bottom of the operator box is provided with a slide rail for pushing in or pulling out the primate fixation system, and the operator box has a pulley.

(2) Animal fixation system

The device of the invention also comprises an animal fixing system for matching with the training of animals and/or the drug administration evaluation of animals.

In a preferred form of the invention, the animal holding system is a seat assembly comprising a frame, two side panels, front and rear panels and a base enclosing a seating space into which the primate can enter. Preferably, the support is formed by splicing four round/square columns vertically and upwards fastened at four corners of the base respectively and a plurality of transverse round/square tubes, and the connected round/square tubes are fixed by a detachable clip (a connecting assembly between the tubes). Preferably, the seat assembly further comprises an upper panel for securing the primate neck, which is mounted on top of the bracket by the holder (connection assembly). Preferably, the seat assembly further comprises a primate seat assembly secured to the lower portion of the bracket by the clip and above the base. Preferably, the seat assembly further comprises a primate bilateral forearm fixation assembly secured to the middle of the bracket by the clip and positioned above the seat assembly. Preferably, the side panels and the face panels are secured to the seat assembly by removable clamps (connection assemblies); the front panel and the rear panel are single doors, and are respectively used for carrying out experimental related operations on the backs of the primates by the primates in-out and experimental personnel. The primate seat assembly is simple and firm in structure, convenient to install, adjust and detach, capable of adjusting the fixed height and the inclined angle of the neck of the primate, capable of adjusting the height of the seat of the primate in three directions (front and back, left and right and up and down), allowing the primate forelimbs to freely move so as to facilitate experimental operations such as a compression bar and a touch screen, allowing experimental staff to operate the back of the primate, and further facilitating safe and reliable relevant experimental researches. The primate seat assembly is pushed into or pulled out of the operation box through a sliding rail arranged at the bottom of the operation box. The primate seat assembly has good universality and is suitable for scientific research experiments of primates of various ages and body types.

Application of the device of the invention

The invention also provides application of the primate drug addiction evaluation device. It is applicable to applications including but not limited to the following group: self-administration reinforcement training of primates; primate drug reward effect assessment; assessment of primate drug behavior uncontrolled effects; primate drug craving assessment; primate drug tolerance effect assessment; assessment of extent of adverse drug use in primates.

(1) Primate self-administration reinforcement training

As an evaluation mode, the primate can sit on the seat assembly to finish the self-administration task, the primate can obtain a primary reward (the reward can be natural rewards such as solid food, liquid juice, water and the like or addictive drugs such as heroin and ice toxin) by pressing one side pressure lever of the left side pressure lever and the right side pressure lever for a specific number of times, and the reward can not be obtained by pressing the other side pressure lever, and acoustic and optical stimulation is presented while the reward is given. At the beginning, the primate randomly presses the rods, after a period of training, the pressing effective rate and the frequency of the side press rods related to the rewards of the primate are greatly improved, and therefore the reinforcement effect of the rewards is reflected. During training, the dose gradient of a single administration of a reward may be set to fully evaluate the potentiating effect of the reward, while a single day maximum reward acquisition time may be defined to prevent excessive intake of the drug.

As a preferred mode of the present invention, the criteria for successful training are: the number of single day rewards acquisitions and the amount of compression varies within + -20% over 3 consecutive days for the primate. Training task termination conditions on the same day: a. up to a maximum duration of the training task, such as 120 minutes; b. the maximum number of rewards is reached in advance; c. continuous 30 minutes without any pressing rod operation; d. the face of the primate presents fear and other emotions; e. primate body temperature is outside of normal range.

(2) Assessing primate drug reward effects

As an evaluation, the device of the invention can be used to evaluate primate drug rewarding effects. As a preferred approach, operational conditional reflex of the primate to the natural reward is first established: a primate is placed in the primate seat assembly and in the primate self-administration system assembly, training it to press the left and right side pressure bars on the interactive panel, giving a food reward (solid particles, similar in appearance to pills) while presenting a sound and a red/green light stimulus when pressing the left side pressure bar; a juice prize is given when the right plunger is pressed, and simultaneously the stimulus of sound and green/red light is presented. The selection percentage of each prize and the number of presses of the double-sided compression bar are recorded. Next, when the daily selection ratio is stable (the judgment standard will be described later), the following steps are performed: a. setting a dose gradient of the drug to be tested (e.g., 5 gradients may be selected, the first dose being zero, the third dose being the optimal dose of the drug for use in clinical or animal studies, the second being one third of the third, the fourth being three times the third, the fifth being three times the fourth); b. replacing original solid or liquid rewards with the to-be-detected medicine (if the to-be-detected medicine is a solid pill, the right side pressing rod is selected to be associated, namely, when the right side pressing rod is pressed for a fixed number of times (namely, a Fixed Ratio (FR) value), a pill is given instead of original fruit juice to be used as a rewarding material, and similarly, if the to-be-detected medicine is liquid, the left side pressing rod is selected to be associated with the to-be-detected medicine, and if the to-be-detected medicine is required to be intravenously administered, the left side pressing rod or the right side pressing rod is randomly selected to be associated with the to-be-detected medicine); c. the maximum test duration per primate day may be 120 minutes, including five blocks of 20 minutes duration (the number of blocks equals the number of dose gradients of the drug), the maximum number of rewards per block being 10 times, the blocks being terminated early when the maximum rewards are reached, the two blocks being spaced 5 minutes apart. The difference between the five blocks is only that the doses of the medicaments to be tested are different in a single administration, the doses of the medicaments from block1 to block5 are increased progressively, and the dose in a single block is unchanged; d. allowing primate animals to freely select between the medicine to be tested and natural rewards, and counting the selection percentage and the compression bar times of the primate animals; e. the evaluation is ended when the data change satisfying the selection percentage and the number of compression bars for three consecutive days is in the range of 20%.

(3) Assessing primate drug behavior control effects

As an evaluation, the device of the invention can be used to evaluate the uncontrolled effects of primate drug behavior. As one embodiment, the method comprises: a. drawing a dose response curve of the to-be-detected medicine, and selecting the dose with the highest compression bar frequency (namely, the primate is willing to pay more compression bar operation for the dose) as the use dose for evaluating the behavior control effect of the primate; b. enabling the primate to freely select between the medicine to be tested and the natural rewards, wherein the maximum training time of a single day is 120 minutes, the maximum rewards are determined according to the safe dosage of the medicine, and the training is finished when the maximum is reached; c. the interval between the stages three is set to 1 minute; the FR value is calculated according to the ratio of the pressing times of a certain side pressing rod and the corresponding rewarding times in the previous day, the FR initial value can be set manually according to the actual situation, and the FR is unchanged in the current day; e. a 10 minute craving test task was added 120 minutes a day prior to testing, and within this 10 minutes the primate strut operation did not produce any rewards and outputs of acoustic, optical stimuli, etc., but the strut behavior was still recorded. Evaluation end conditions: the evaluation will be terminated prematurely when the FR value exceeds three times its three-average value before increasing sharply, or when the FR value exhibits an "S" shaped increase, otherwise until a maximum duration (4 weeks).

(4) Assessing primate drug craving

As an evaluation, the device of the invention can be used to evaluate primate drug craving. As one embodiment, the method comprises: after repeated ingestion of the test drug for a period of time, the administration is stopped, and evaluation of the craving degree of the primate for the test drug is performed. The assessment task is similar to the method of assessing primate drug behavior uncontrolled effects, except that: the FR value is constant and the operation of the pressing rod does not obtain any output of rewards, medicines, sound, light and the like. The craving degree of the drug to be tested is quantified by the pressing amount of the side pressing rod related to the drug to be tested by the primate.

(5) Assessment of primate drug tolerance effects

As an evaluation, the device of the invention can be used to evaluate primate drug tolerance effects. As one embodiment, the method comprises: and recording the single-day drug intake to be tested in the process of self-administration reinforcement training of the primate, evaluating the rewarding effect of the primate drug or evaluating the uncontrolled effect of the primate drug, and analyzing the change rule of the single-day drug intake with time to evaluate the tolerance effect of the primate to the drug to be tested.

(6) Assessment of extent of adverse drug use in primate

As an evaluation method, the device of the invention can be used for evaluating the harmful use degree of primate medicaments. As one embodiment, the method comprises: recording the single-day drug intake and the weight and intake of the drug to be tested and analyzing the change rule of the single-day drug intake and the weight and intake of the drug with time in the process of self-administration strengthening training of the primate, evaluating the rewarding effect of the drug of the primate or evaluating the uncontrolled effect of the drug of the primate, and carrying out regression analysis on the relationship between the weight/intake and the accumulated drug intake of the drug to be tested so as to evaluate the harmful use degree of the primate on the drug to be tested.

The device of the present invention is capable of performing a range of addiction-related animal training protocols including, but not limited to, the following:

(i) The training of addictive models of various addictive drugs, such as morphine, heroin, cocaine, methamphetamine and other primates, comprises self-administration, intensity of foraging behavior and the like.

(Ii) Various addictive drugs, such as morphine, heroin, cocaine, methamphetamine, etc., can be used for withdrawal training of primate addiction models, and for observing acute/chronic withdrawal symptoms.

(Iii) The withdrawal training of the addictive model of various addictive drugs, such as morphine, heroin, cocaine, methamphetamine and other primates, comprises the acceleration/slowing of withdrawal of natural withdrawal, drug/physical intervention and other means.

(Iv) The re-inhalation of various addictive drugs, such as morphine, heroin, cocaine, methamphetamine and other primate addictive models, comprises drug induction, thread induction, environmental induction and the like.

The device of the present invention is capable of performing a series of animal training protocols for clinically relevant drugs including, but not limited to, the following:

(i) For antibiotics which can be orally administered (solid pill, tablet, etc., liquid medicine) or intravenously administered, addiction, tolerance, etc. in primates are evaluated.

(Ii) For therapeutic drugs which can be administered orally (solid pill, tablet, etc., liquid medicine) or intravenously, such as cardiovascular system diseases, nervous/mental diseases, immune system diseases, urinary system diseases, respiratory system diseases, digestive system diseases, blood system diseases, reproductive system diseases, tumor diseases, etc., addiction, tolerance, etc. in primates are evaluated.

(Iii) Sedative hypnotic drugs which can be administered orally (solid pills, tablets, etc., liquid medicinal solutions) or intravenously are evaluated for addiction, tolerance, etc. to primates.

The device of the present invention is capable of performing animal training protocols including, but not limited to, the following several preclinical conversion related drugs:

With the present invention, animal training protocols can also be performed that include, but are not limited to, the following food-related: the primate is evaluated for addiction, tolerance, etc. to solid, liquid foods.

The invention will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. The experimental methods, in which specific conditions are not noted in the following examples, are generally conducted under conventional conditions or under conditions recommended by the manufacturer.

In the present invention there is provided a device for assessing drug addiction in a primate comprising a primate self-administration system assembly and a primate seat assembly. See in particular the summary section.

In the description of the present invention, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientation or positional relationships based on that shown in the drawings, merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be in a specific configuration and operation, and thus should not be construed as limiting the scope of protection of the present invention.

Example 1, an apparatus for primate drug addiction assessment

A primate drug addiction evaluation device as shown in fig. 1, 4-5, the device comprises an operation box main body 1 capable of containing a tested animal; the operation box main body 1 includes: the system comprises an interaction module, an input module, an output module, a reward module, a monitoring module, a vital sign monitoring module and a computer-based recording-control module 2. The interactive module comprises an interactive panel 8 on which are arranged: the system comprises a compression bar module 9 and a touch screen module 10 in an input module, a prompt lamp 11 in an output module, a solid rewarding sub-module 12 in a rewarding module and a head-face monitoring sub-module 13 of a monitoring module; the plurality of sub-modules arranged on the interaction module are in communication with the recording-control module 2 via cables.

The input module comprises a compression bar module 9 which comprises a left compression bar and a right compression bar which are respectively positioned at the left side and the right side of the vertical central line of the interactive panel. The pressure bar module comprises a pressure bar box 23, a pressure bar plate 24, a micro switch 25 and a bar box dynamometer 26, wherein the pressure bar box is arranged on the interactive panel, the bar box dynamometer 26 and the micro switch 25 are positioned in the pressure bar box 23, the pressure bar plate 24 penetrates through the front wall of the pressure bar box 23 to extend into the pressure bar box 23 and is linked with the bar box dynamometer 26 and the micro switch, and the animal starts the micro switch 25 by pressing the pressure bar plate 24, and the bar box dynamometer 26 is used for measuring and adjusting the required pressing force (figures 2-3). The micro switch 25 is arranged on a micro switch supporting plate 27, and the micro switch supporting plate 27 is positioned below the box inner part of the pressure lever plate 24; the micro switch 25 is communicated with the recording-control module 2 through a cable and is used for transmitting the data of the number of pressing rods and the duration of single pressing. The vertical distance between the lower edge of the bar-shaped box dynamometer shaft and the micro switch is used for adjusting the resistance of the pressing rod, and the rewarding difficulty is obtained through adjusting the resistance of the pressing rod.

The input module comprises a touch screen module 10 which is positioned in the center of the interactive panel 8 and between the left and right press bars of the press bar module 9.

The output modules include a warning light 11, a horn 14, and an air-blow (air-throw) module 15. The indicator lights comprise a left indicator light, a right indicator light, an upper indicator light and an upper indicator light, wherein the left indicator light and the right indicator light are respectively arranged on the left side and the right side of a vertical central line of the interactive panel, and the upper indicator light is close to the upper edge of the interactive panel. The left indicator light and the right indicator light are respectively positioned above the left pressure lever and the right pressure lever. The left indicator light and the right indicator light are different in color and are red and green respectively, and the upper indicator light is white.

The horn 14 is located on the inner wall of the operation box main body 1.

The air-blowing module 15 is located on the wall of the operation box main body 1 and can deliver air flow stimulation of a specific duration, speed and flow rate to the animal face inside the operation box main body 1.

The reward module includes a solid reward sub-module 12, a liquid reward sub-module 16, and an automatic administration sub-module 17. Preferably, it is in communication with said recording-control module 2 via a cable, controlling the feeding of solid, liquid rewards or the automatic administration of drugs to the animals. The solid prize sub-module 12 comprises a particle pump, a pipeline and a food groove, wherein the particle pump is positioned outside the operation box main body 1 and is communicated with the food groove 18 positioned in the operation box main body 1 through the pipeline; preferably, it communicates with the recording-control module 2 through a cable, controlling the delivery of a preset amount of solid food or drug particles to the animal, the feeding trough being located on the interactive panel 8. The liquid reward sub-module 16 comprises a syringe/peristaltic pump located outside the operation box main body 1, which is connected to the mouth of the animal located inside the operation box main body 1 through a pipe, which is connected to the recording-control module 2 through a cable, controlling the delivery of a preset amount of liquid to the animal. The automatic dosing sub-module 17 comprises a syringe/peristaltic pump located outside the main body of the operating box, which is connected by a pipe to the animal body located inside the main body 1 of the operating box, which is connected by a cable to the recording-control module 2, controlling the injection of a preset quantity of medicine to the animal.

The monitoring module comprises: a behavior monitoring sub-module 6 and a head-face monitoring sub-module 13. The behavior monitoring sub-module 6 is located in the operation box main body 1, and the head-face monitoring sub-module 13 is located on the interaction panel 8. The behavior monitoring sub-module or the head-face monitoring sub-module is a camera.

The vital sign monitoring module comprises a temperature measuring module (infrared thermometer) 19 which communicates with the recording-control module 2 via a cable for conveying animal body temperature information. The temperature measuring module 19 is located outside the operation box main body 1, and measures temperature through a probe hole 20 located on the wall of the operation box main body 1.

The operation box main body 1 also comprises components: a lighting assembly (illumination lamp) 5; a temperature probe 7 for measuring and/or monitoring the temperature in the operation box main body; and a wind exchanging port 4.

The inner bottom of the operation box main body 1 is also provided with a sliding rail 21 which can be matched with an animal fixing system provided with pulleys, so that the animal fixing system can move along the sliding rail conveniently.

The operation box main body 1 comprises an operation box door 3 which is a single door and is opposite to the front surface of the interaction panel.

The box body of the operation box main body is 800mm long, 800mm wide and 1500mm high.

The bottom of the operation box main body 1 is also provided with a pulley 22 so that the operation box main body 1 can be moved.

The operation box main body 1 is surrounded by a sound insulation material to prevent internal animals from being disturbed.

The operation box main body 1 of the present invention further comprises a primate seat assembly; the utility model comprises a bracket, two side plates, a front panel, a rear panel and a base, which are mutually connected in a surrounding way to form a seating space suitable for primates. The bracket is formed by splicing four round/square upright posts which are vertically and upwards fastened at four corners of the base respectively and a plurality of transverse round/square tubes, and the connected round/square tubes are fixed by a detachable clip device (a connecting assembly between the tubes); the seat assembly further comprises an upper panel for securing the primate neck, which is mounted on top of the bracket by a clamp; the seat assembly further comprises a fixing assembly for fixing the two side forelimbs of the animal, wherein the fixing assembly is fixed in the middle of the bracket through a clip device and is positioned above the primate seat assembly; the side plates and the face plates are fixed on the seat assembly through a detachable clamp holder; the front panel and the rear panel are single-door.

Example 2 training of cynomolgus monkey and evaluation of its medication

In this example, training and drug administration evaluation were performed using the device of example 1 described above using cynomolgus monkeys as animal models.

1. Establishing operational conditional reflex of cynomolgus monkey to natural rewards

By utilizing the instinct of the cynomolgus monkey on the environment exploration, the liking of the fruit juice and the program setting of the primary natural rewards obtained immediately after the operation of the compression bar, the association between the compression bar operation of the cynomolgus monkey and the natural rewards, namely the operational condition reflection (operant conditioning) is established. The cynomolgus monkey sits on the primate seat assembly to complete task training, and the forelimbs on two sides have the same opportunity to press the lever, but the special structure of the primate seat assembly determines that the forelimbs on one side of the cynomolgus monkey can only press the same side pressing rod, but can not press the opposite side pressing rod. A food reward (solid particles, similar in appearance to pills) is given once when the cynomolgus monkey presses the left side compression bar, and a juice (liquid) reward is given once when the right side compression bar is pressed. The selection percentage of each prize and the number of presses of the double-sided compression bar are recorded.

The behavioral training at this stage uses a Fixed Ratio (FR) reinforcement procedure. During training, the inventors gradually increased the FR value to a fixed value, here exemplified by 30 (increasing sequence: 1,3,5,8, 13, 20, 30). Training is carried out for 5 days per week, training is carried out for 2 hours per day, and the training task is terminated in advance: natural prize administration times were maximized (85 times) with 30min continuous pressureless operation. The flow and parameters of a single trial are set as follows: when the three starts, the white room lamp is turned on, if the number of times of the left pressing rod of the cynomolgus monkey reaches a specified value, a solid rewarding is immediately given, the room lamp is turned off during the rewarding period, the red LED lamp directly above the left pressing rod blinks (500 ms for switching on and off) and the buzzer intermittently sounds (500 ms for switching on and off), and the rewarding is finished. If the number of times of pressing the right pressing rod of the cynomolgus monkey reaches a specified value, a juice reward (2 ml) is immediately given, the room lights are turned off during the juice giving period, the green LED lights flash (500 ms for switching on and off respectively) and the buzzer intermittently sound (500 ms for switching on and off respectively) right above the pressing rod, and the juice giving process is finished. The 60s Time-out phase is then entered, and the press operation of the cynomolgus monkey during the bonus administration is not counted as the number of effective presses to obtain juice, but is still recorded by the software.

The following two conditions are met, the cynomolgus monkey can be considered to successfully establish the operational conditional reflex of the natural rewards, and the following experiments are started: 1) At FR30, the rewards administration amount was stable for 3 consecutive days (data change is within 10% of mean); 2) There is no plunger in the bonus awards and Time-out phases.

Experiments were performed on batches of cynomolgus monkeys, part of the learning curve of which is shown in fig. 6a. The results show that with the device of the invention, a cynomolgus monkey is able to establish stable operative conditioned reflex over an average of 10-15 days.

FIG. 6b is a graph showing the cumulative number of compression bars over time in a cynomolgus monkey over 30 min. The results show that with the device of the invention, the following objectives can be achieved in an average of 10-15 days: 1) High frequency pressing of the prize-associated side struts after the beginning of the real; 2) Bonus awards and no-press operation of Time-out phase.

2. Evaluation of the reward effect of methamphetamine on cynomolgus monkeys

(A) Macaca fascicularis vein catheterization operation experiment

And determining the intake mode of the cynomolgus monkey according to the mode of using the medicine to be tested by the human. Intravenous administration is described herein as an example. The retention tube was chronically embedded in the femoral or jugular vein of the animal and the injection tip was introduced subcutaneously in the back for chronic administration. The procedure is briefly described as follows: under general anesthesia, the skin is incised 2cm above the femoral vein or the jugular vein, the vein blood vessel is separated, the puncture needle is inserted into the blood vessel, and then the implantable vein cannula is introduced into the vein blood vessel along the puncture needle by about 8-10cm, and the blood vessel and the vein cannula are fixed. The other end of the venous cannula was passed subcutaneously to the back, the 3cm skin was cut, the venous catheter and injection lumen were connected, and the two incisions were sutured. And monitoring physiological indexes of experimental animals in real time during operation. Postoperative care: daily nursing is carried out by professional animal technicians after the operation, analgesic and antibiotics are injected once to twice daily three days before the operation, the first debridement is carried out on the seventh day, the operation parts and the periphery are cleaned, the suture line is removed, and debridement work with frequency of 2 days is ensured after seven days. After the operation is completely recovered, the method can be continued.

(B) Drawing a dose-response curve for cynomolgus monkey methamphetamine

Based on the results of the previous test, a single injection dose of methamphetamine was set to 0, 3.2, 10, 32, 100 μg/kg for a total of 5 dose gradients and methamphetamine was associated with the left side crimp bar instead of the original solid prize. The maximum test duration of each cynomolgus monkey per day is 120 minutes, and the maximum test duration comprises five blocks with the duration of 20 minutes, the maximum rewards times in each block are 10, and when the maximum rewards are reached, the blocks are finished in advance, and the intervals among the blocks are 5 minutes. The difference between the five blocks is only that the doses of the drugs to be tested are different in a single administration, the doses of the drugs from block1 to block5 are increased progressively, and the dose in a single block is unchanged. The flow and parameters of a single trial are set as follows: when the three starts, if the number of times of pressing the left side lever of the cynomolgus monkey reaches a predetermined value, methamphetamine is immediately given, the red LED lamps immediately above the left side lever flash (the lamp flash frequency corresponding to the different methamphetamine doses is different, each 500ms is turned on and off when the dose is "0 μg/kg", each 400ms is turned on and off when the dose is "3.2 μg/kg", each 300ms is turned on and off when the dose is "10 μg/kg", each 200ms is turned on and off when the dose is "32 μg/kg", each 100ms is turned off when the dose is "100 μg/kg") and the buzzer intermittently sound (the sound frequency corresponding to the different methamphetamine doses is different, each 500ms is turned on and off when the dose is "0 μg/kg", each 400ms is turned on and each 300ms is "10 μg/kg", each 100ms is turned on and each 200ms is turned off when the dose is "32 μg/kg"), and each three is completed. If the number of times of pressing the right pressing rod of the cynomolgus monkey reaches a specified value, a juice reward (2 ml) is immediately given, the room lights are turned off during the juice giving period, the green LED lights flash (500 ms for switching on and off respectively) and the buzzer intermittently sound (500 ms for switching on and off respectively) right above the pressing rod, and the juice giving process is finished. Allowing primate animals to freely select between the medicine to be tested and natural rewards, and counting the selection percentage and the compression bar times of the primate animals; e. this step ends when the data change satisfying the selection percentage and number of compression bars for three consecutive days is in the range of 20%. And drawing a dose-response curve according to the pressure lever behaviors of the cynomolgus monkey on different dose gradients and the single daily dosage. And based on the curve, the dose with the greatest response was selected as the dose for subsequent evaluation.

Fig. 6c is a graph of percentage selection of cynomolgus monkey on methamphetamine and fruit juice at five methamphetamine doses. The results show that the prize effect value (relative to fruit juice) of methamphetamine on the cynomolgus monkey can be comprehensively, objectively and accurately estimated by using the device.

Fig. 6d is a graph of the frequency of pressing of the cynomolgus monkey on methamphetamine-associated side struts at five methamphetamine doses. The results show that the device provided by the invention can objectively and accurately evaluate the dosage effect of methamphetamine on a cynomolgus monkey and obtain the maximum response dosage.

3. Evaluation of drug addiction behavior to be tested

(A) Assessing behavior runaway effects

A. When the selection percentages of the methamphetamine with different dosages in the step 2 are different and the maximum value exceeds 50%, entering the step 3, and selecting the dosage with the highest compression bar frequency as the dosage for evaluating the behavior runaway effect;

B. Continuously enabling the cynomolgus monkey to freely select between methamphetamine and fruit juice, wherein the single-day test time is still 120 minutes at the maximum, but not block, the single-administration dosage is constant, the maximum rewarding times are determined according to the online of the safe dosage of the medicine, and the current-day test is finished when the times are reached;

C. The interval between the stages three is set to 1 minute;

the FR value is calculated according to the ratio of the pressing times of a certain side pressing rod and the corresponding rewarding times in the previous day, the FR initial value can be set manually according to the actual situation, and the FR is unchanged in the current day;

E. A craving detection task of 10 minutes is added before the detection for 120 minutes every day, and the operation of the pressing rod of the cynomolgus monkey does not generate any rewards, sound, light stimulus and other outputs within 10 minutes, but the action of the pressing rod is still recorded.

F. Evaluation end conditions: the evaluation will be terminated prematurely when the FR value exceeds three times the three-way average before its rapid increase, or when the FR value exhibits an "S" shape increase, this phase having a maximum duration of 4 weeks.

(B) Assessment of withdrawal response (craving degree):

the detection task paradigm is similar to step3 (a), except that: the FR value is constant and there is no output of rewards harmony, light, etc. The craving degree of the cynomolgus monkey for methamphetamine is quantified by the pressing times of the side pressure lever related to the medicine to be tested.

(C) Assessment of re-inhalation behaviour

It was examined whether the ingestion of small doses of methamphetamine and the presentation of clues (cue) could cause the cynomolgus monkey to re-press the methamphetamine-associated side lever and the amount of compression.

(D) Evaluation of deleterious use:

the harmful use of the drug to be tested is reflected by recording the change of the weight of the cynomolgus monkey.

Fig. 6e is a graph of the percentage of cynomolgus monkey selected for methamphetamine and fruit juice over time. The results show that with the device of the invention, cynomolgus monkeys can reach objective and stable selection percentages of methamphetamine within an average of 3-5 days.

FIG. 6f is a graph of cynomolgus monkey single day methamphetamine intake as a function of time. The results show that the device provided by the invention can objectively and accurately evaluate the uncontrolled effect of the cynomolgus monkey on the usage amount of methamphetamine.

FIG. 6g is a graph showing the variation of FR values with training days. The result shows that the device can objectively and accurately evaluate the uncontrolled effect of the cynomolgus monkey on the use behavior of methamphetamine.

FIG. 6h is a graph showing craving for methamphetamine in a cynomolgus monkey in withdrawal. The results show that the craving degree of the cynomolgus monkey on methamphetamine can be objectively and accurately estimated by using the device of the invention.

Fig. 6i is a graph of the re-uptake data of cynomolgus monkey p-methamphetamine. The result shows that the device can objectively and accurately evaluate the re-absorption behavior of the cynomolgus monkey on the methamphetamine.

FIG. 6j is a graph of cynomolgus monkey body weight as a function of time taken for methamphetamine intake. The results show that the device provided by the invention can objectively and accurately evaluate the harmful use effect of the cynomolgus monkey on methamphetamine.

4. Quantifying craving for methamphetamine in cynomolgus monkeys

Quantifying the rewarding effect, behavior runaway effect, craving level, re-sucking behavior and deleterious use, respectively.

(A) Prize effect

The prize value is calculated based on the value of the selected percentage corresponding to the highest response dose of methamphetamine, specifically 0-25% is scored 0, 25% -50% is scored 1, 50% -75% is scored 2, and 75% -100% is scored 3). In this example, the score of the term was 3 points.

(B) Behavior runaway effect

The out-of-control behavior score is calculated according to the increase amplitude of the daily dosage and the increase amplitude of the FR value, wherein 1-1.25 times of the average of the initial three days of the step 3 is recorded as 0 score, 1.25-2 times is recorded as 1 score, 2-3 times is recorded as 2 score, and more than 3 times is recorded as 3 score at the end of detection. According to the standard, the score of the item is 3 points in the embodiment; the FR value at the end of the test was 1 to 1.25 times the three-average value before the rapid increase, 1.25 to 2 times, 2 to 3 times, 3 times or more, and in this example, 3 times.

(C) Craving degree

The craving degree score is calculated according to the ratio of the number of compression bars in withdrawal period to the number of compression bars in the day of last administration, wherein less than 1 time is recorded as 0 score, 1-1.5 times is recorded as 1 score, 1.5-2 times is recorded as 2 score, and more than 2 times is recorded as 3 score. In this example, the score of the term was 2 points.

(B) Re-suction behavior

The re-sucking value is calculated according to the ratio of the number of compression bars in the re-sucking behavior detection period to the number of compression bars in the last administration day, 0-0.25 times is marked as 0 score, 0.25-0.5 times is marked as 1 score, 0.5-0.75 times is marked as 2 score, and more than 0.75 times is marked as 3 score. In this example, the score of the term was 3 points.

(C) Harmful use

In terms of harmful use, the weight is not reduced or is reduced by less than 10% and is marked as 0 score, 10-15% is marked as 1 score, 15-20% is marked as 2 score, and more than 20% is marked as 3 score. In this example, the score of the term was 2 points.

The index total score is 18 (0 is no addiction, 1-6 is low addiction, 7-12 is medium addiction, and 13-18 is high addiction). In this embodiment, the index score is 16 points, which is a high addiction.

Example 3 training of cynomolgus monkey and evaluation of its administration (physiological saline)

In this example, training and drug administration (physiological saline) evaluation were performed using the device of example 1 described above using cynomolgus monkeys as animal models.

By utilizing the instinct of the cynomolgus monkey on environment exploration, the liking of fruit juice and the program setting of the primary natural rewards obtained immediately after the operation of the compression bar, the association between the compression bar operation of the cynomolgus monkey and the natural rewards, namely the operational condition reflection, is established. The cynomolgus monkey sits on the primate seat assembly to complete task training, and the forelimbs on two sides have the same opportunity to press the lever, but the special structure of the primate seat assembly determines that the forelimbs on one side of the cynomolgus monkey can only press the same side pressing rod, but can not press the opposite side pressing rod. A food reward (solid particles, similar in appearance to pills) is given once when the cynomolgus monkey presses the left side compression bar and a juice reward is given once when the right side compression bar is pressed. The selection percentage of each prize and the number of presses of the double-sided compression bar are recorded.

The behavioral training at this stage uses a Fixed Ratio (FR) reinforcement program. The inventors have gradually increased the FR value to a fixed value during training, here exemplified by 30 (increasing sequence: 1,3,5,8, 13, 20, 30). Training is carried out for 5 days per week, training is carried out for 2 hours per day, and the training task is terminated in advance: natural prize administration times were maximized (85 times) with 30min continuous pressureless operation. The flow and parameters of a single trial are set as follows: when the three starts, the white room lamp is turned on, if the number of times of the left pressing rod of the cynomolgus monkey reaches a specified value, a solid rewarding is immediately given, the room lamp is turned off during the rewarding period, the red LED lamp directly above the left pressing rod blinks (500 ms for switching on and off) and the buzzer intermittently sounds (500 ms for switching on and off), and the rewarding is finished. If the number of times of pressing the right pressing rod of the cynomolgus monkey reaches a specified value, a juice reward (2 ml) is immediately given, the room lights are turned off during the juice giving period, the green LED lights flash (500 ms for switching on and off respectively) and the buzzer intermittently sound (500 ms for switching on and off respectively) right above the pressing rod, and the juice giving process is finished. The 60s Time-out phase is then entered, and the press operation of the cynomolgus monkey during the bonus administration is not counted as the number of effective presses to obtain juice, but is still recorded by the software.

The following two conditions were met and the following experiments were started: 1) At FR30, the rewards administration amount was stable for 3 consecutive days (data change is within 10% of mean); 2) There is no plunger in the bonus awards and Time-out phases.

2. Assessing the rewarding effect of physiological saline on cynomolgus monkey

(A) Macaca fascicularis vein catheterization operation experiment

And determining the intake mode of the cynomolgus monkey according to the mode of using the medicine to be tested by the human. Intravenous administration is described herein as an example, and this step may be skipped if oral or other modes of administration are used. The retention tube was chronically embedded in the femoral or jugular vein of the animal and the injection tip was introduced subcutaneously in the back for chronic administration. The procedure is performed by an experienced veterinarian. The procedure is briefly described as follows: under general anesthesia, the skin is incised 2cm above the femoral vein or the jugular vein, the vein blood vessel is separated, the puncture needle is inserted into the blood vessel, and then the implantable vein cannula is introduced into the vein blood vessel along the puncture needle by about 8-10cm, and the blood vessel and the vein cannula are fixed. The other end of the venous cannula was passed subcutaneously to the back, the 3cm skin was cut, the venous catheter and injection lumen were connected, and the two incisions were sutured. And monitoring physiological indexes of experimental animals in real time during operation. Postoperative care: the special animal technicians are subjected to daily nursing after the operation, the analgesic and the antibiotics are injected once to twice every day three days before the operation, the first debridement is performed on the seventh day, the operation parts and the periphery are cleaned, the suture line is removed, and debridement work with a frequency of 2 days is ensured after seven days. After the operation is completely recovered, the method can be continued.

(B) Plotting a dose-response curve of cynomolgus monkey physiological saline

According to the results of the previous test, the single injection dose of physiological saline is set to be 0, 0.1, 0.3, 1 and 3mg/kg for 5 dose gradients, and the physiological saline is associated with the left lateral pressure rod instead of the original solid reward. The maximum test duration of each cynomolgus monkey per day is 120 minutes, and the maximum test duration comprises five blocks with the duration of 20 minutes, the maximum rewards times in each block are 10, and when the maximum rewards are reached, the blocks are finished in advance, and the intervals among the blocks are 5 minutes. The difference between the five blocks is only that the doses of the drugs to be tested are different in a single administration, the doses of the drugs from block1 to block5 are increased progressively, and the dose in a single block is unchanged. The flow and parameters of a single trial are set as follows: when the three starts, if the number of times of pressing the left side lever of the cynomolgus monkey reaches a predetermined value, normal saline is immediately administered once, the red LED lamps immediately above the left side lever flash (the lamp flash frequency corresponding to different normal saline doses is different, each of 500ms is turned on and off when the dose is "0.1mg/kg", each of 400ms is turned on and off when the dose is "0.3mg/kg", each of 300ms is turned on and off when the dose is "0.3mg/kg", each of 200ms is turned on and off when the dose is "1mg/kg", each of 100ms is turned on and off when the dose is "3 mg/kg"), and the buzzer is off (the sound frequency corresponding to different normal saline doses is different, each of 500ms is turned on and off when the dose is "0.1mg/kg", each of 400ms is turned on and each of 300ms is turned on and off when the dose is "0.3mg/kg", each of 200ms is turned on and each of 3 mg/kg) and the three is awarded when the dose is "1 mg/kg". If the number of times of pressing the right pressing rod of the cynomolgus monkey reaches a specified value, a juice reward (2 ml) is immediately given, the room lights are turned off during the juice giving period, the green LED lights flash (500 ms for switching on and off respectively) and the buzzer intermittently sound (500 ms for switching on and off respectively) right above the pressing rod, and the juice giving process is finished. Allowing primate animals to freely select between the medicine to be tested and natural rewards, and counting the selection percentage and the compression bar times of the primate animals; e. this step ends when the data change satisfying the selection percentage and number of compression bars for three consecutive days is in the range of 20%. And drawing a dose-response curve according to the pressure lever behaviors of the cynomolgus monkey on different dose gradients and the single daily dosage. And based on this curve the corresponding maximum dose is selected as the dose for the subsequent evaluation.

Fig. 7a is a graph showing the percentage of cynomolgus monkey selection for physiological saline and juice at five physiological saline doses. The result shows that the device can comprehensively, objectively, accurately and truly evaluate the prize effect value (relative to fruit juice) of the physiological saline on the cynomolgus monkey.

Fig. 7b is a graph showing the frequency of pressing of the saline-associated side lever by cynomolgus monkey at five saline doses. The results show that the device provided by the invention can objectively, accurately and truly evaluate the dosage effect of the physiological saline on the cynomolgus monkey.

Fig. 7c is a graph of the percentage of cynomolgus monkey selected versus time for physiological saline and juice. The results show that with the device of the invention, the cynomolgus monkey can reach objective and stable physiological saline selection percentage within an average of 3-5 days.

3. Evaluation of drug addiction behavior to be tested

(A) Assessing behavior runaway effects

A. And (3) under the condition that the selection percentages of the physiological saline with different doses in the step (2) are different and the maximum value exceeds 50%, entering the step (3), and selecting the dose with the highest compression bar frequency as the use dose for evaluating the behavior control effect.

4. Quantifying the addiction of cynomolgus monkeys to physiological saline

(A) Prize effect

The reward effect score is calculated according to the selection percentage value corresponding to the highest response dose of physiological saline, specifically, 0-25% is marked as 0 score, 25% -50% is marked as 1 score, 50% -75% is marked as 2 score, and 75% -100% is marked as 3 score). In this example, the term score was 0.

(B) Behavior runaway effect

According to the method, the score of the item is 0 point in the embodiment.

(C) Craving degree

According to the method, the score of the item is 0 point in the embodiment.

(D) Re-suction behavior

According to the method, the score of the item is 0 point in the embodiment.

(E) Harmful use

According to the method, the score of the item is 0 point in the embodiment.

The index total score is 18 (0 is no addiction, 1-6 is low addiction, 7-12 is medium addiction, and 13-18 is high addiction). In this embodiment, the index score is 0, which is non-addictive.

All documents mentioned in this disclosure are incorporated by reference in this disclosure as if each were individually incorporated by reference. Further, it will be appreciated that various changes and modifications may be made by those skilled in the art after reading the above teachings, and such equivalents are intended to fall within the scope of the application as defined in the appended claims.

Claims

1. A device for assessing drug addiction in a non-human primate, the device comprising a main body of an operation box for accommodating a subject animal and an animal fixation system; the operation box main body comprises: the system comprises an interaction module, an input module, an output module, a reward module, a monitoring module, a vital sign monitoring module and a record-control module; the interaction module is used for interacting with animals and comprises an interaction panel, wherein an input module, an output module, a reward module or a part of components of the monitoring module are arranged on the interaction panel; the reward module includes: the solid rewarding sub-module, the liquid rewarding sub-module and the automatic drug administration sub-module are respectively in operable communication with the recording-control module and control to feed solid, liquid rewarding or automatically administer drugs to animals; the input module comprises a touch screen module and a compression bar module; the touch screen module outputs visual stimulus, is in operable communication with the recording-control module and transmits operation information of animals to the touch screen; the compression bar module and the touch screen module in the input module are positioned on an interaction panel of the interaction module; the animal starts the micro switch by pressing the pressure lever plate, and the required pressing force is measured and regulated by the strip-shaped box dynamometer; the micro switch is in operable communication with the recording-control module and is used for transmitting the data of the times of pressing rods and the duration of single pressing; the vertical distance between the lower edge of the strip-shaped box dynamometer and the micro switch is used for adjusting the resistance of a pressing rod, and rewarding difficulty is obtained through adjusting the resistance of the pressing rod;

The compression bar module comprises a left compression bar module and a right compression bar module which are respectively positioned at the left side and the right side of the vertical central line of the interactive panel; the solid reward sub-module is in operative communication with the record-control module and controls delivery of a predetermined amount of solid food or drug particles to an animal; the liquid reward sub-module is in operative communication with the record-control module and controls delivery of a preset amount of liquid to the animal; the automatic dosing sub-module is in operative communication with the record-control module and controls injection of a preset amount of drug into the animal;

The input module is used for receiving behavior information of animals; the output module is used for transmitting a stimulus signal to the animal; the rewarding module is used for rewarding animals; the monitoring module is used for monitoring animals; the vital sign monitoring module is used for monitoring animal vital signs; the recording-control module is used for acquiring, recording, analyzing and/or transmitting information of the input module, the output module, the rewarding module, the monitoring module and the vital sign monitoring module.

2. The apparatus of claim 1, wherein monitoring the animal with the monitoring module comprises monitoring the animal's behavior and/or head-to-face performance.

3. The device of claim 1, wherein the micro-switch is disposed on a micro-switch carrier that is located below the in-box portion of the plunger plate.

4. The device of claim 1, wherein the pressure bar resistance in the bar box load cell is adjustable in the range of 0-10N.

5. The apparatus of claim 1, wherein the touch screen module is located in the center of the interactive panel between a left plunger module and a right plunger module of the plunger module.

6. The apparatus of claim 1, wherein the output module comprises a warning light, a horn, a blowing module; each component is in operative communication with the record-control module and receives information from the record-control module.

7. The apparatus of claim 6, wherein the indicator lights comprise at least one left indicator light and at least one right indicator light, disposed to the left and right of a vertical midline of the interactive panel, and at least one upper indicator light.

8. The apparatus of claim 6, wherein the horn is located on an inner wall of the operation box body or the interactive panel; the blowing module is positioned on the wall of the operation box main body and is communicated to the front of the animal face positioned in the operation box main body through a pipeline.

9. The apparatus of claim 7, wherein the left indicator light and the right indicator light are located above the left plunger module and the right plunger module, respectively.

10. The apparatus of claim 7, wherein the left indicator light and the right indicator light are different in color, and the upper indicator light is different in color from the left indicator light and the right indicator light.

11. The apparatus of claim 7, wherein the insufflation module is in operative communication with the record-control module to control delivery of airflow stimuli to the animal's face for a predetermined period of time, speed, and flow rate.

12. The apparatus of claim 1, wherein the solid reward submodule comprises a pellet pump, a pipeline and a trough, the pellet pump being located outside the operation box body and being communicated with the trough located in the operation box body through the pipeline.

13. The apparatus of claim 12, wherein the liquid reward submodule comprises a syringe pump/peristaltic pump located outside of the operator's compartment body that is in communication with an animal mouth located inside of the operator's compartment body via a conduit.

14. The apparatus of claim 12, wherein the automated administration submodule comprises a syringe pump/peristaltic pump located outside of the operator's compartment body that is in communication with an animal body located inside of the operator's compartment body via tubing.

15. The apparatus of claim 12, wherein the trough is located on an interactive panel.

16. The device of claim 1, wherein the injection is intravenous.

17. The apparatus of claim 6, wherein the monitoring module comprises: the behavior monitoring sub-module and the head and face monitoring sub-module.

18. The apparatus of claim 17, wherein the behavior monitoring sub-module is located within the operator box body and the head-to-face monitoring sub-module is located on the interactive panel.

19. The apparatus of claim 17, wherein the behavior monitoring sub-module or head-to-face monitoring sub-module is a camera.

20. The apparatus of claim 1, wherein the vital sign monitoring module comprises a thermometry module in operative communication with the record-control module for delivering animal body temperature information.

21. The apparatus of claim 20, wherein the thermometry module is located outside the operator's compartment body and performs thermometry through a probe aperture located in the operator's compartment body wall.

22. The apparatus of claim 17, wherein the interactive module is configured on an interactive panel of the interactive module to: the system comprises a compression bar module and a touch screen module in an input module, a prompt lamp in an output module, a solid rewarding sub-module in a rewarding module and a head and face monitoring sub-module of a monitoring module.

23. The apparatus of claim 1, wherein the operator box body further comprises an assembly selected from the group consisting of: a lighting assembly; the temperature probe is used for measuring and/or monitoring the temperature in the main body of the operation box; and/or a ventilation port.

24. The apparatus of claim 1, wherein the animal fixation system is a non-human primate seat assembly.

25. The apparatus of claim 24, wherein the animal fixation system comprises a frame, side panels, front and rear panels, and a base that are peripherally joined to each other to form a seating space for the non-human primate.

26. The apparatus of claim 25, wherein the support is formed by splicing four round/square columns vertically and upwardly fastened to four corners of the base, and a plurality of horizontal round/square tubes, and the connected round/square tubes are fixed by a detachable clip.

27. The apparatus of claim 25, wherein the seat assembly further comprises an upper panel for securing the neck of the non-human primate mounted on top of the bracket by a clamp.

28. The apparatus of claim 25, wherein the seating assembly further comprises a securing assembly for securing the bilateral forelimbs of the animal, secured in the middle of the bracket by a clip, above the non-human primate seating assembly.

29. The apparatus of claim 25 wherein the side panels and the faceplate are secured to the seat assembly by removable clamps.

30. The apparatus of claim 25, wherein the front and rear panels are single door panels.

31. The apparatus of claim 1, wherein the interior bottom of the operation box body is further provided with a slide rail, and the animal fixing system is provided with a pulley matched with the slide rail, so that the animal fixing system can move along the slide rail.

32. The apparatus of claim 1, wherein the operator box body comprises at least one operator box door.

33. The apparatus of claim 1, wherein the box body of the operation box body has a length of 500 to 1200mm, a width of 500 to 1200mm, and a height of 1000 to 2000mm.

34. The apparatus of claim 1, wherein the bottom of the operation box body is further provided with a pulley so that the operation box body can be moved.

35. The apparatus of claim 1, wherein the console box body comprises a sound insulating material.

36. The apparatus of claim 32, wherein the operator door is configured as a single door that is directly opposite the front face of the interactive panel.

37. The apparatus of claim 33, wherein the box body of the operation box body has a length of 650-1000 mm, a width of 650-1000 mm, and a height of 1200-1800 mm.

38. The apparatus of claim 37, wherein the box body of the operation box body has a length of 700 to 900mm, a width of 700 to 900mm, and a height of 1350 to 1650mm.

39. Use of the device for non-human primate drug addiction assessment of any of claims 1-38 for:

Self-administration reinforcement training of non-human primates;

non-human primate drug reward effect assessment;

Non-human primate drug behavior uncontrolled effect assessment;

assessing the degree of drug craving in a non-human primate;

evaluating the tolerance effect of the non-human primate drug;

Assessment of the extent of non-human primate drug adverse use; and/or

Non-human primate conditioned reflex training.

40. The use of claim 39, wherein the non-human primate comprises: monkey, gibbon, gorilla.

41. The use of claim 40, wherein the monkey comprises a monkey selected from the group consisting of: rhesus, cynomolgus, macaque, green monkey, marmoset and squirrel monkey.