CN114544822B - Application of reagent for detecting lysophosphatidylcholine (22:0) in blood plasma in preparation of depression detection kit - Google Patents

Application of reagent for detecting lysophosphatidylcholine (22:0) in blood plasma in preparation of depression detection kit Download PDF

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CN114544822B
CN114544822B CN202011334992.3A CN202011334992A CN114544822B CN 114544822 B CN114544822 B CN 114544822B CN 202011334992 A CN202011334992 A CN 202011334992A CN 114544822 B CN114544822 B CN 114544822B
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depression
lysophosphatidylcholine
reagent
application
plasma
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CN114544822A (en
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谢鹏
刘艺昀
蒲俊材
桂思雯
宋学冕
陈晓鹏
陈唯一
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Chongqing Medical University
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/04Preparation or injection of sample to be analysed
    • G01N30/06Preparation
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/88Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86

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  • Health & Medical Sciences (AREA)
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  • General Health & Medical Sciences (AREA)
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Abstract

The application discloses an application of a reagent for detecting lysophosphatidylcholine (22:0) in blood plasma in preparing a depression detection kit, and belongs to the field of depression detection. The use of the present application is based on the fact that there is a difference in lysophosphatidylcholine (22:0) in plasma between depressed patients and normal persons, which is sufficient for accurate differentiation between depressed patients and normal persons. The application also discloses a detection kit based on the principle. The kit can realize quantifiable objective detection and has the advantages of sensitivity, rapidness and high reliability.

Description

Application of reagent for detecting lysophosphatidylcholine (22:0) in blood plasma in preparation of depression detection kit
Technical Field
The application belongs to the field of depression detection, and particularly relates to application of a reagent for detecting lysophosphatidylcholine (22:0) in blood plasma in preparation of a depression detection kit.
Background
Depression is a major type of mood disorder, characterized by a significant and persistent depression in the mood. As one of the diseases with the highest disability rate in the world, the burden of depression patients on families, healthcare systems and society is enormous. It is estimated that up to 50% of 80 ten thousand suicide animals worldwide exist annually. Currently, the global depression patient population accumulates more than 3.5 hundred million people, and China has more than 5400 ten thousand people suffering from depression.
The depression has remarkable hereditary property, the hereditary rate reaches 30% -40%, and a plurality of hereditary factors are involved. It is also affected by a variety of non-genetic factors that increase the complexity of the pathogenesis of depression. The unclear pathogenesis causes that the diagnosis method for the disease is always remained on subjective observation levels such as a questionnaire scale, and lacks objective examination indexes, and meanwhile, the operation difficulty is high and the diagnosis period is long. Therefore, it is urgent to develop a sensitive, rapid, highly reliable diagnostic method or apparatus based on quantifiable objective indicators.
Lysophosphatidylcholine (LPC) is an intermediate product of lecithin metabolism in the body, and if the concentration is increased, it can solubilize erythrocyte membranes. Lecithin in plasma can be converted to lysolecithin under the catalysis of lecithin cholesterol acyltransferase. Lysophosphatidylcholine (22:0) is one of lysophosphatidylcholine. At present, no relationship between lysophosphatidylcholine (22:0) in blood and depression has been reported.
Disclosure of Invention
The application aims to solve the problems that: provides a new application of lysophosphatidylcholine (22:0) as a marker of depression.
The technical scheme of the application is as follows:
use of a reagent for detecting lysophosphatidylcholine (22:0) in plasma for the preparation of a depression detection kit.
Further, the reagent is a reagent for a liquid chromatography-mass spectrometry method.
Further, the reagent is a reagent for a liquid chromatography method.
Further, the kit comprises T 3 HSS chromatographic column, pure water dissolved 0.1% formic acid as mobile phase a and acetonitrile dissolved 0.1% formic acid as mobile phase B.
Further, the detection standard of the kit is as follows: when the plasma of the tested person is significantly lower than that of healthy people, the tested person is judged to be a high risk person of depression.
A depression detection kit, characterized in that: the kit comprises reagents for detecting lysophosphatidylcholine (22:0) in plasma.
Further, the reagent is a reagent for a liquid chromatography-mass spectrometry method.
Further, the reagent is a reagent for a liquid chromatography method.
Further, the kit comprises T 3 HSS chromatographic column, pure water dissolved 0.1% formic acid as mobile phase a and acetonitrile dissolved 0.1% formic acid as mobile phase B.
Further, the detection standard of the kit is as follows: when the plasma of the tested person is significantly lower than that of healthy people, the tested person is judged to be a high risk person of depression.
The key point of the application is that it is determined that the level of human plasma lysophosphatidylcholine (22:0) is significantly related to depression, so that the risk of depression can be judged by detecting the level of human plasma lysophosphatidylcholine (22:0), and as for the specific detection of lysophosphatidylcholine (22:0), various means disclosed in the prior art can be adopted, and the detection of the embodiment of the application by using the liquid chromatography-mass spectrometry method is not meant to be limited to the method.
The application provides a novel depression detection marker and a novel depression detection kit, which can realize quantitative objective detection of depression and have the advantages of sensitivity, rapidness and high reliability.
It should be apparent that, in light of the foregoing, various modifications, substitutions and alterations can be made herein without departing from the spirit and scope of the application as defined by the appended claims.
The above-described aspects of the present application will be described in further detail below with reference to specific embodiments in the form of examples. It should not be understood that the scope of the above subject matter of the present application is limited to the following examples only. All techniques implemented based on the above description of the application are within the scope of the application.
Drawings
Fig. 1: relative amounts of lysophosphatidylcholine (22:0) in depressed and normal control plasma; CON, control; MDD, depression.
Detailed Description
Example 1 Depression detection kit and method of use thereof
1. Composition of the kit
Standard pure liquid containing 12mg/ml plasma metabolism marker, 1C 8 BEH column (1.7 μm, 2.1X100 mm) and 1T 3 HSS column (1.8 μm, 2.1X100 mm), pure water dissolved 0.1% formic acid, acetonitrile dissolved 0.1% formic acid. Wherein the plasma metabolic marker is lysophosphatidylcholine (22:0).
2. Application method
(a) Injecting the prepared plasma sample into a chromatographic column through an automatic sampler, and separating metabolites in positive and negative ionization modes respectively under the specific chromatographic conditions that: mobile phase A is 0.1% formic acid dissolved in pure water; mobile phase B was 0.1% formic acid dissolved in acetonitrile. For the positive mode, the gradient initially starts at 10% b, increases linearly to 40% b in 4 minutes after 1 minute, then increases to 100% b in 12 minutes and remains for 5 minutes, then returns to the initial ratio balance for about 3 minutes. In negative mode, the gradient starts at 100% a, increases linearly to 40% b after 1 minute, then increases to 100% b in 9 minutes, and remains for 4 minutes, then returns to the initial ratio equilibrium for about 4 minutes. The column temperature was 55 ℃.
(b) The separated metabolites were imported into a liquid chromatograph-mass spectrometer Shimadzu LC (30 AD) -MS (TQ 8050) to acquire dynamic multi-reaction monitoring (MRM) data for validation, and the main parameters of the mass spectrum were the same as positive and negative modes: the flow rate of the heating gas is 10L/min; the flow rate of the dry gas flow is 10L/min; the flow rate of the atomized air flow is 3L/min; the DL temperature was 250 ℃; the temperature of the heating block is 400 ℃; the interface heater temperature was 300 ℃.
(c) Based on the relative concentrations of lysophosphatidylcholine (22:0), the subject was assessed for depression. Relative concentrations < 0.0027 determine a high risk of depression.
The kit is designed based on the plasma metabolic marker provided by the application, and can be used for accurately diagnosing and accurately evaluating patients suffering from depression.
To demonstrate the effectiveness of lysophosphatidylcholine (22:0) in assessing depression, the present application provides the following experimental examples.
Experimental example 1 comparison of plasma lysophosphatidylcholine (22:0) concentration between depressed patients and normal controls
50 cases of clinical depression and normal control were collected, each of which was prepared as 5ml plasma samples. 100 samples were taken from a first hospital affiliated with Chongqing university, subjects in the depression group excluded from past or present suffering from other neurological or psychiatric disorders, alcoholism or dependence on illicit drug use or pregnancy, and were diagnosed as depression by a first hospital affiliated with Chongqing university using the DSM-IV-TR standard, and a Hamiltonian depression scale was implemented to assess the severity of depression. Normal control subjects were excluded from any past or present neurological disease, I-axis or II-axis disease or systemic medical disease. The study protocol fully met the ethical criteria of human trials and was approved by the ethical committee of Chongqing medical university, subjects were known prior to the test and were given written consent.
The plasma sample was tested for plasma lysophosphatidylcholine (22:0) concentration by the kit and method of example 1, as shown in FIG. 1, and the plasma lysophosphatidylcholine (22:0) concentration was much lower in patients with depression than in controls (p<0.001 FDR of 0.0001, log 2 |FC|=-0.9965。
Note that: FDR refers to the false discovery rate, FDR of 0 indicates that the expected value of the ratio of the number of false rejections (rejecting true (original) hypotheses) to the number of all rejected original hypotheses is 0.0001. The method comprises the steps of carrying out a first treatment on the surface of the FC refers to fold change.
The results of the experimental examples show that the plasma lysophosphatidylcholine (22:0) of the patients with depression is obviously lower than that of normal people, and the plasma lysophosphatidylcholine (22:0) concentration can be used for distinguishing the patients with depression from the normal people.
In conclusion, the kit provided by the application can be used for rapid auxiliary diagnosis of depression and has a good application prospect.

Claims (3)

1. Use of a reagent for detecting lysophosphatidylcholine (22:0) in plasma for the preparation of a depression detection kit, characterized in that:
the reagent is used for a liquid chromatography-mass spectrometry method;
or the reagent is a reagent for a liquid chromatography method.
2. The use according to claim 1, characterized in that: the kit comprises T 3 HSS chromatographic column, pure water dissolved 0.1% formic acid as mobile phase a and acetonitrile dissolved 0.1% formic acid as mobile phase B.
3. The use according to claim 1, characterized in that: the detection standard of the kit is as follows: when the plasma of the tested person is significantly lower than that of healthy people, the tested person is judged to be a high risk person of depression.
CN202011334992.3A 2020-11-24 2020-11-24 Application of reagent for detecting lysophosphatidylcholine (22:0) in blood plasma in preparation of depression detection kit Active CN114544822B (en)

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