CN115135333A - Composition for improving hyperuricemia comprising Rhus succedanea extract - Google Patents

Composition for improving hyperuricemia comprising Rhus succedanea extract Download PDF

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CN115135333A
CN115135333A CN202080097581.9A CN202080097581A CN115135333A CN 115135333 A CN115135333 A CN 115135333A CN 202080097581 A CN202080097581 A CN 202080097581A CN 115135333 A CN115135333 A CN 115135333A
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uric acid
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赵昶需
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Shurin Yellow Paint Co ltd
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    • A23FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
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Abstract

The present invention relates to a composition comprising a Rhus succedanea extract as an effective ingredient, and more particularly, to a medical composition or a functional food composition having a preventive, ameliorating and/or therapeutic effect on hyperuricemia. According to the invention, the limitation of the existing product is overcome, and a new hierarchical technology for improving the hyperuricemia which is a natural raw material and has two effects of inhibiting the activity of xanthine oxidase and discharging uric acid can be obtained. And, modern scientific research on pharmacological efficacy of korean indigenous resources, separation and purification of active ingredients, safety, toxicity research, etc. is systematically performed, thereby ensuring that korean indigenous biological resources can be developed as a basis for international famous brands, like ginseng. Moreover, the application range can be expanded to various industrial fields such as the application degree of natural medicinal raw materials and health functional foods using the yellow lacquer extract.

Description

Composition for improving hyperuricemia comprising Rhus succedanea extract
Technical Field
The present invention relates to a composition comprising a Rhus succedanea extract as an active ingredient, and more particularly, to a pharmaceutical composition or a functional food composition having a preventive, ameliorating and/or therapeutic effect on hyperuricemia.
Background
Uric acid (C) 5 H 4 N 4 O 3 ) Is a process of purine metabolism in vivo, which is caused by hypoxanthine (hypoxanthine; c 5 H 4 N 4 O) or anthoxanthin produced by xanthine oxidase or xanthine dehydrogenase, approximately 70% of uric acid in blood is produced by endogenous purine metabolism based on cellular alterations (turn-over), 30% is formed by purine taken through diet, and most is excreted through the kidney.
Under such conditions of increased uric acid formation or decreased excretion, the uric acid concentration in blood increases to 7.0mg/dL or more in men and 6.5mg/dL or more in women, which is defined as hyperuricemia. It is known that an increase in uric acid concentration is responsible for gout (gout), which induces inflammatory reaction due to precipitation of urate crystals (urate crystals) in the joint membrane, and recently, an interesting mechanical or clinical study on the correlation between uric acid and renal diseases, cardiovascular diseases including hypertension, and metabolic syndrome and onset/exacerbation of diabetes has been published.
On the other hand, gout, a typical disease occurring in a human body with hyperuricemia, is a chronic systemic metabolic disease in which white blood cells phagocytose uric acid crystals generated by various factors by immune reaction, causing recurrent paroxysmal arthritis of joints and tissues around the joints, and when uric acid is continuously excessive, joint disorders are caused by accumulated uric acid nodules. As described below, uric acid is formed during purine decomposition, and excessive production of uric acid causes gout.
Gout clinically causes acute gout attack, chronic arthritis, gout nodules and the like, and also becomes a cause of various diseases such as uric acid urinary calculi, chronic kidney diseases and the like. Recently, the incidence of obesity, kidney diseases, hypertension, hyperuricemia caused by increased use of diuretics such as thiazide and aspirin, and gout caused by hyperuricemia has been rapidly increasing due to aging and westernization of dietary life. Therefore, gout patients are often accompanied by chronic diseases such as obesity, diabetes, hypertension, hyperlipidemia, and metabolic syndrome, and are known to have a high risk of cardiovascular diseases in particular.
Such gout is diagnosed as the presence of uric acid crystals phagocytosed by polymorphonuclear leukocytes or accumulated in tissues in lubricating fluids or tissues of joints, and recently, dual energy computed tomography, ultrasound, and the like have been used for diagnosis to improve the diagnosis rate. The rate of males is 10 times that of females and up to 21 times that of 30 years old as reported by Korean gout medical record.
In addition, excessive uric acid can also cause urinary calculus (kidney stone, ureteral stone). Urinary calculi are diseases in which many substances such as uric acid and calcium are not properly excreted by urination during digestion, but stay in the kidneys and are largely crystallized to cause symptoms of disorders, and are mostly urinary calculi because urinary ducts are elongated and most frequently clogged. The kidney diseases caused by hyperuricemia are classified into kidney stones and chronic uric acid kidney diseases, and the kidney stones caused by uric acid account for 5-10% of the whole urinary calculi. 80% of uric acid lithangiuria is composed of only uric acid crystals, and the remaining uric acid lithangiuria increases calcium oxalate or calcium phosphate in uric acid crystal nuclei, thereby causing lithangiuria.
As a therapeutic agent for ameliorating or treating such hyperuricemia, xanthine oxidase inhibitors (xanthine oxidase inhibitors), Uricosuric agents (uric acid excretion), Uricolytic agents (urozyme), and the like are available.
The xanthine oxidase inhibitor is used for inhibiting uric acid synthesis, and when the xanthine oxidase inhibitor is used, uric acid metabolism is inhibited, uric acid concentration in blood is reduced, and hyperuricemia and gout can be treated. The uricosuric agent acts on the proximal tubule of the kidney to inhibit the reabsorption of uric acid, thereby functioning to promote the excretion via urine. The uricolytic agent is an enzyme that oxidizes uric acid into allantoin (allantoin), which has higher solubility than uric acid and is easily excreted through the kidney.
Disclosure of Invention
Technical problem
In the prior art for treating the above hyperuricemia, the xanthine oxidase inhibitory activity and uric acid discharge effects were separated. The risk of death of febuxostat, one of gout therapeutic agents that acts as a mechanism to reduce uric acid values in blood, is under debate. Thus, there is an urgent need to develop uric acid-emitting products without side effects.
Specifically, there is an urgent need to develop a new hierarchical technique for improving hyperuricemia, which is a natural raw material, and which overcomes the limitations of the existing products and has 2 effects of inhibiting xanthine oxidase and releasing uric acid.
Also, since a large amount of Reactive Oxygen Species (ROS) is formed during the production of uric acid and causes inflammation and tissue damage, the ingredient having an antioxidant effect contributes to the symptoms and treatment of hyperuricemia patients, and thus the development of products containing the ingredient is effective.
Means for solving the problems
In order to solve the above problems, the present invention provides a composition for preventing, improving and/or treating hyperuricemia comprising an extract of Rhus succedanea.
In an embodiment of the present invention, the composition can simultaneously perform the xanthine oxidase inhibitory activity and the uric acid excretion function.
In one embodiment of the present invention, the composition can perform antioxidant activity.
In one embodiment of the present invention, the composition can exhibit functions of preventing, improving and/or treating gout, urinary calculi and kidney diseases derived from hyperuricemia.
In an embodiment of the present invention, the composition may be a functional food composition.
In an embodiment of the present invention, the Rhus succedanea extract can be extracted according to water or a mixture of water and ethanol.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the invention, a novel 2-level hyperuricemia improving technology which overcomes the limit of the existing product and has the effects of inhibiting the activity of xanthine oxidase and discharging uric acid can be obtained.
And, modern scientific research on pharmacological efficacy of korean indigenous resources, separation and purification of active ingredients, safety, toxicity research, etc. is systematically performed, thereby ensuring that korean indigenous biological resources can be developed as a basis for international famous brands, like ginseng.
Moreover, the application range can be expanded to various industrial fields such as the application degree of natural medicinal raw materials and health functional foods using the yellow lacquer extract.
Drawings
Fig. 1 is a graph looking at the results of Xanthine Oxidase (XO) inhibitory activity of a chinese goldenrod extract. CGA is chlorogenic acid (chlorogenic acid) which is one of the marker ingredients.
FIG. 2 shows the measurement of serum uric acid value in animal experiment.
FIG. 3 shows the results of the activity of intrahepatic Xanthine Oxidase (XO) in animal experiments.
Detailed Description
The following detailed description will be given of embodiments of the present invention so that those skilled in the art to which the present invention pertains can easily carry out the present invention. Embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art. Therefore, the embodiment of the present invention can be modified in various other embodiments, and the scope of the present invention is not limited to the embodiments described below.
Throughout the description of the present invention, when some parts "include" some structural elements, it means that other structural elements may be included without excluding other structural elements unless otherwise stated.
Throughout the description of the present invention, when certain steps are "on" or "before" other steps, this may include the case where certain steps have a direct time series relationship with other steps, and may include the same right where the order of two steps may change the indirect time series relationship of the time series as in the case of a mixed step after each step.
The terms "about," "substantially," and the like, as used throughout the specification are used in the sense of referring to the inherent manufacturing and material tolerances, are used in the sense of the values or close to the values in order to prevent an ill-intentioned attacker from illegally utilizing the disclosure of the correct or absolute values that are helpful in understanding the present invention. The term "performing" or "step" used throughout the present specification does not mean "step for" or "step" used in "step".
Rhus succedanea (Dendropanax morbifera) is an evergreen broad-leaved forest belonging to Araliaceae (Araliaceae), a subtropical tree species that is autogenous and cultivated only in southwest coast and island regions of the southwest of the whole Roots. The resin of the yellow lacquer is golden, has strong heat resistance, durability and water resistance, good adhesiveness and luster, and is used as a natural coating of the traditional handicraft articles and a raw material of folk medicines since ancient times. Further, it has been reported that the yellow lacquer contains not only essential oil components such as sesquiterpene, but also various components such as arachidic acid, palmitic acid, arginine, etc., and has effects of arteriosclerosis, improvement of liver function, promotion of oxidation-resistant bone regeneration, enhancement of immunity, antibacterial, anticancer, etc. The yellow lacquer is described as an edible raw material (leaf, stem, root) in the food code of the food and drug security hall, and is not limited in industrial application.
The yellow paint is a korean indigenous tree species, and its blood circulation improvement (anti-arteriosclerosis effect), liver function improvement, hard tissue (bone and tooth) regeneration effect, anti-diabetes effect, anti-hypertension effect, anti-cancer effect, anti-oxidation effect, skin tissue regeneration, immunity enhancement, neuroleptic effect, antibacterial activity and the like are disclosed in korean medical books and modern medicine, and it is suitable as a new material for high value-added food. However, the research on the composition of the yellow paint has been mainly focused on the analysis of essential oils and fatty acids (fatty acid) components such as β -celecene (β -selinene) and capnellane-8-one to which sesquiterpene (sesquiterpene) having 2 ring structures belongs contained in the sap of yellow paint used as a coating material, which is in an incomplete state in terms of the correlation or effective components with the pharmacological efficacy or functionality of the components contained in leaves, stems, barks, etc.
The present invention is characterized by providing a composition for ameliorating hyperuricemia, which utilizes the yellow sumac-derived component. The inventor confirms that the Rhus succedanea extract has an inhibiting effect and an antioxidant effect on xanthine oxidase, and also confirms the effect of reducing the uric acid value in blood of the Rhus succedanea extract through simple clinical tests. Furthermore, the effect of reducing the uric acid concentration in blood was also confirmed using an animal model. Thus, in the present invention, a pharmaceutical and/or functional food composition having a xanthine oxidase inhibitory effect, a uric acid emitting effect, and an antioxidant effect of the Rhus succedanea extract can be provided.
The composition for improving hyperuricemia according to an embodiment of the present invention may include an extract from a tree of toxicodendron amurense and a leaf of toxicodendron amurense (hereinafter, also referred to as "toxicodendron amurense extract"). In the present invention, the trees of Rhus succedanea may mean the bark of Rhus succedanea, etc. The leaves and/or stems of raw Rhus succedanea can be used as they are, but dried leaves and/or stems of dried Rhus succedanea can also be used in the form of dried crude drugs.
In one embodiment of the present invention, the solvent of the extract of the tree and leaf of the resina toxicodendri is a mixed solvent of water and ethanol. More specifically, the above-mentioned mixed solvent may mix water and ethanol at a weight ratio of 6:4 to 8:2, and preferably may mix at a ratio of 7: 3.
The pharmaceutical composition of the present invention can be formulated according to the formulation standards of conventional pharmaceutical preparations in the food and medicine safety agency (KFDA). Preferably, the yellow lacquer extract or the yellow lacquer liquid fermentation metabolite is diluted by mixing with a pharmaceutically acceptable carrier by a conventional method according to an administration method, an administration form and a therapeutic purpose, or enclosed in a carrier in a container form.
The pharmaceutical composition includes oral preparations, injections, suppositories, transdermal administration, and nasal administration, but can be formulated and administered in any dosage form not limited thereto, and preferably can be formulated in oral administration dosage forms such as liquid, suspension, powder, granules, tablets, capsules, pills, and extracts.
When formulated in the above-mentioned respective dosage forms, the preparations may be prepared by adding pharmaceutically acceptable carriers or additives required in the preparation of the respective dosage forms. Typically, when formulated into an oral dosage form, the carrier may be selected from 1 or more of diluents, lubricants, binders, disintegrants, sweeteners, stabilizers and preservatives, and the additive may be selected from 1 or more of flavors, vitamins and antioxidants.
The above carriers and additives can be pharmaceutically acceptable carriers and additives, specifically, lactose, corn starch, soybean oil, microcrystalline cellulose or mannitol is preferable as diluent, magnesium stearate or talc is preferable as lubricant, and polyvinylpyrrolidone or hydroxypropyl cellulose is preferable as binder. Further, as the disintegrating agent, calcium carboxymethylcellulose, sodium starch glycolate, polacrilin potassium, or crospovidone is preferable, as the sweetening agent, white sugar, fructose, sorbitol, or aspartame is preferable, as the stabilizing agent, sodium carboxymethylcellulose, β -cyclodextrin, white wax, or xanthan gum is preferable, and as the preservative, methyl paraben, propyl paraben, or potassium sorbate is preferable.
In addition to the above components, as known additives, natural flavors such as plum flavor, lemon flavor, pineapple flavor, and vanilla flavor, natural fruit juice, chlorophyllin, and natural colors such as flavonoids, and sweet components such as fructose, honey, sugar alcohol, and granulated sugar, and sour agents such as citric acid and sodium citrate may be mixed for enhancing taste.
The pharmaceutical composition can be administered in a dose of 1 day total dose of 1 to 100g/kg of Rhus succedanea extract and 0.01 to 50g/kg of Rhus succedanea crude drug, as effective components, in several times at will based on adults, in order to obtain hyperuricemia improving effect. The dose can be increased or decreased as appropriate depending on the type of disease to be treated or prevented, the degree of progression of the disease, the route of administration, sex, age, body weight, and the like.
In another aspect, a functional food comprising the Rhus succedanea extract according to the present invention described above is provided. In the present invention, the "functional food" refers to a food prepared and processed using functional raw materials or ingredients useful for human bodies according to laws related to health functional foods.
Conventional functional health foods can be formulated in the dosage forms of conventional functional foods known in the art using a dietetically acceptable carrier. The functional food can be prepared into, for example, powders, granules, tablets, capsules, suspensions, emulsions, syrups, liquids, aerosols, extracts, and the like. As the above-mentioned bromatologically allowable carrier or additive, any carrier or additive known to be usable in this technical field can be used in the preparation of a dosage form to be prepared.
Hereinafter, the present invention will be described more specifically by way of examples according to one embodiment of the present invention, which should not be construed as limiting the scope of the present invention.
1.Xanthine Oxidase (XO) inhibitory activity
Experiments for the inhibitory activity of the extract of Chinese sumac and xanthine oxidase (xanthine oxidase) as an active ingredient were performed according to the method of Stire and Corte Della. To 0.1mL of extracts (0.5 to 8.0mg/mL) and 0.6mL of 0.1M potassium phosphate buffer (pH 7.5) having different concentrations, 0.2mL of a xanthine (xanthine) base solution having a concentration of 2mM and 0.1mL of a xanthine oxidase (0.2uint/mL) were added, and then, after 0.1mL of a xanthine oxidase (0.2uint/mL) was added, 1mL of NHCl was added after a reaction was performed at 37 ℃ for 15 minutes, and after the reaction was stopped, the amount of uric acid produced in the reaction solution was calculated by measuring absorbance at 290nm using an ultraviolet-visible spectrophotometer (Optizen POP, CM Science, Busan, Korea). As a positive control group, allopurinol (allopurinol), yellow, which is an inhibitor of xanthine oxidase (xanthene oxidase) and is used in the treatment of pain was usedInhibition activity (%) of purine oxidase was calculated from IC according to the following formula 50 The values are represented.
Inhibitory effect (Inhibition effect) (%) - [ 1- (a-B)/C) ] × 100
(A: absorbance after reaction of a sample of the extract and an enzyme solution added to a Xanthine (Xanthine) solution (2mM)
B: the absorbance after the reaction was measured by adding 0.1mL of distilled water to A instead of adding the enzyme solution
C: adding distilled water 0.1mL instead of the extract to A, absorbance after reaction)
The results of examining the XO inhibitory activity of the sumac extract and the active ingredients are shown in fig. 1. As a result of comparing the hot water extract of resina xanthiifolia with the alcohol extracts of different concentrations, it was confirmed that the higher the alcohol concentration, the higher the XO inhibitory activity. As a result of comparing the XO inhibitory activities based on the shelf life of the yellow paints, the extract from the yellow paints within 3 months (New) after collection exhibited an XO inhibitory activity about 2 times higher than that of the extract from the yellow paints 1 year or more (Old) after collection, and it was confirmed that the activity exhibited differences according to the shelf life. As a result of confirming XO inhibitory activity of chlorogenic acid (chlorogenic acid), which is one of the index components of the Rhus succedanea extract, the IC was 69.07. mu.g/ml 50 Although having a lower activity than that of allopurinol (allopurinol) of the positive control group, it was judged that there was no problem in setting it as an index component of the yellow lacquer extract.
2. Antioxidant effect
DPPH scavenging efficacy 2-1
DPPH clearance activity assay is an experiment used in the determination of antioxidant activity. The reducing power (antioxidant power) of a substance is measured indirectly by measuring the degree of reduction of DPPH radicals caused by the reaction with a predetermined amount of a sample solution using a stable free radical 2, 2-Diphenyl-1-picrylhydrazino (2,2-Diphenyl-1-picryl, DPPH) which is a model of unsaturated fatty acid radicals, using a Spectrophotometer (Spectrophotometer). Namely, 2, 2-diphenyl-1-picrylhydrazino (2, 2-Dipheny)l-1-picryl hydrazyl, DPPH) is a chemically stable water-soluble radical, which is a violet compound exhibiting characteristic light absorption at 517nm, and is very stable in an organic solvent such as ethanol, and when it encounters a substance having an antioxidant arc shape, electrons are released to scavenge the radical (DPPH), and the radical changes from the original violet to yellow, thereby having an advantage that the oxidation activity can be easily observed by the naked eye. Vitamin C (vitamin C) (ascorbic acid) known as a control group was used for comparison, samples and DPPH were dissolved in DMSO and then diluted in methanol, and 90. mu.l of DPPH (100. mu.M) and 10. mu.l of samples were put in a 96-well culture plate and reacted at 37 ℃ for 10 minutes, and then the absorbance was measured at 517 nm. DPPH radical scavenging Activity by IC 50 The values are represented.
2-2 determination of antioxidant efficacy by DCFH-DA assay
The DCFH-DA assay is a method used for measuring the amount of Reactive Oxygen Species (ROS) in cells or the intracellular ROS-scavenging ability of a specific substance, and uses 2 '7' diacetate (DCFH-DA) of a probe (probe) that exhibits fluorescence that allows cell permeation. DCFH-DA diffuses into cells and is converted to 2 '7' (DCFH) by intracellular esterase (esterase), and this substance is used for intracellular antioxidant experiments by utilizing the principle that ROS is rapidly converted to 2 '7' (DCF) exhibiting fluorescence.
As the cell line used in the experiment, adriamycin (doxorubicin) -resistant cell line AML-2/DX100, which is leukemia cell AML-2 in which catalase (catalase) activity is expressed relatively rarely, was used. Washing 2 times of AML-2/DX100 cells with PBS 1x10 5 After cells/ml, 200. mu.l of each cell was dispensed into each well (well), and the dispensed cells were filled with samples at different concentrations in advance, and DCFH-DA was filled in 1. mu.H 2 O 2 After induction of active oxygen at 4mM, at 5% CO 2 After 30 minutes of reaction in an incubator at 37 ℃, the degree of fluorescence (excitation)485nm and the emission wavelength (emission wavelength)530nm) were measured. DCFH-DA free radical scavenging capacity (%), will be based on H 2 O 2 The value of fluorescence cleared by the drug was calculated as a percentage, with the value of increased fluorescence set as 100.
2-3. determination of antioxidant efficacy test results
TABLE 1
Figure BDA0003815516240000101
DW: hot water extract EtOH: alcohol extract
New: within 3 months after collection
Old: collecting for more than 1 year
Shows DPPH clearance efficacy and antioxidant efficacy of the lacquer extract confirmed using the DCFH-DA assay (table 1).
The DPPH radical scavenging effect was similar to the results of XO inhibitory activity, and it was confirmed that the higher the alcohol content and the shorter the storage period, the higher the activity was exhibited. However, the activity of the 70% alcohol extract was rather low in terms of the radical scavenging ability of DCFH-DA, and a similar pattern was observed in that the activity was higher as the storage period was shorter.
3. Analysis of index substance
In order to confirm the content of the active ingredient of the Rhus succedanea extract, the results of analyzing the contents of chlorogenic acid (CGA) and rutin by HPLC-MS/MS are shown (Table 2).
As the alcohol concentration was increased, the content of chloregenic acid (CGA) was increased, and the content of CGA as an index substance was increased, so that it was confirmed that XO inhibitory activity and antioxidant effect were high. Furthermore, since the extract from the yellow paint (New) within 3 months after collection has a CGA content 2 times or more higher than that of the extract from the yellow paint (Old) after 1 year or more, it was confirmed that the useful component was denatured or disappeared when the extract was stored for a long period of time after collection of the yellow paint. The content of rutin as the active ingredient of the yellow paint is similar to the content of CGA.
TABLE 2
Chlorogenic acid content (Fg/g) Rutin (Rutin) content (Fg/g)
Yellow paint DW 6,424±208 10,391±59
Yellow paint 30% EtOH 13,253±237 16,392±218
Yellow paint 50% EtOH 17,419±297 23,737±308
Yellow paint 70% EtOH 21,464±119 29,524±139
New30%EtOH 14,566±375 33,963±369
Old30%EtOH 3,7913±91 8,954±44
4. Animal experiments
Test substance I: 30% ethanol extract of Rhus succedanea (leaf, stem)
Test substance II: rhus succedanea (leaf, stem) hot water extract
Control substance I: probenecid (Probenecid)
Control substance II: allopurinol (Allopurinol)
Excipient: sterilized Water for injection (distilled Water)
Inducing substance: potassium oxonate (Potasumoxonate)
4-1. animal information
TABLE 3
Figure BDA0003815516240000111
Animals were acclimatized in an animal room for 8 days of testing after being admitted and general symptoms were observed more than 1 time per day. Animals were identified during acclimation using tail labeling with a red oily marker pen. During dosing and observation, tail labeling with a black oily marker pen was used for identification.
-attaching a color-differentiated capacity physical identification card to the feeding box, and attaching a unique number to the feeding box.
-attaching test identification papers at the entrance of the housing.
Animal experimental ethics were approved by the institutional animal care committee of chem on, strain. (examination number: 2019-10-001)
4-2. feeding environment
Animals were housed in Kyogi Hovenia bioscience animal housing area No. 4 maintained at a temperature of 23 + -3 deg.C, a relative humidity of 55 + -15%, a ventilation frequency of 10-20 times/hr, an illumination time of 12 hours (8 am-8 pm off), and an illumination of 150 Lux.
-measuring the temperature and relative humidity hourly using a computer system, periodically measuring the number of ventilations and the illuminance.
During the experiment, there were no abnormalities affecting the test results.
The rats were allowed free access to rodent solid feed (Teklad certified animal vertebral 18% protein rodent diet; 2918C; ENVIGO, UK).
The tap water sterilized by means of an ultraviolet sterilizer and a microfiltration device was put into a drinking bottle made of polycarbonate, and the water was freely taken by rats. Water quality inspection was performed by the public health environment research institute of Kyogi province (Changan district, Ba Changchua road 95, Kyogi province, Hydrogen), which was suitable for the water quality standard of drinking water.
-use after autoclaving the mat.
The results of the pollutant test confirmation show that there are no abnormalities affecting the test results.
The cells were housed in a stainless steel net-made feeding box (W235 x L380 x H175 mm) in a number of 4 cells per feeding box during acclimatization, administration and observation.
-rearing boxes and water bottles, changed more than 1 time per week.
4-3 test group composition, dosage setting, grouping and administration
TABLE 4
Figure BDA0003815516240000131
G1: normal group (disabled water, n ═ 8) G2: vehicle control group (Distilled water, n ═ 8)
G3: control substance I administration group (Probenecid, 50mg/kg, n-8)
G4: control substance II administration group (Allopurinol, 50mg/kg, n ═ 8)
G5: test substance I administration group (DM30EE, 50mg/kg, n ═ 7)
G6: test substance I administration group (DM30EE, 100mg/kg, n-7 or 8)
G7: test substance I administration group (DM30EE, 200mg/kg, n ═ 8)
G8: test substance II administration group (DMWE, 200mg/kg, n 7or 8)
G2-G8: in the group induced by hyperuricemia,
the amount of the test substance to be administered is set based on information provided by the test requester.
Grouping of animals was performed as follows. Animals close to the average body weight were selected as required and randomly assigned according to the ordered body weights so that the average body weight of each group was maximally evenly distributed to the number specified in the "test group composition" table.
The dosing protocol is as follows.
TABLE 5
Route of administration and reasons for selection Oral administration employs a clinically pre-determined route.
Number and duration of administration 1 time/day for 7 days, and 1 hour after the administration of the inducing substance on the day of the administration of the inducing substance.
Dose calculation for drug administration Based on the body weight measured recently, it was calculated as 10 mL/kg.
Method of administration The back head of the animal is fixed, and the drug is directly administered into the stomach by using a syringe provided with a probe.
4-4. Observation and inspection
1 observation of death, type of general symptoms, day of expression and extent of symptoms during the administration and observation period, recorded on a per individual basis.
-body weight was measured at the time of entry, on the start of group administration and on the planned autopsy days.
On days 1, 3, 5 and 7, 250mg/kg of Potassium Oxazinate (0.5% sodium carboxymethylcellulose) with0.1M sodium acetate (sodium acetate) pH 5) was injected intraperitoneally twice to induce hyperuricemia.
4-5, dissecting autopsy and determining items
On day 7, 1 hour after the administration of Potassium Oxonate (Potaspotassium oxonate), the test substances are administered and the animals are transferred to metabolism cages.
Urine was collected within 2 hours after administration of the test substance, and autopsy was performed.
-performing a posterior vena cava blood sampling.
Perfusion with Saline (Saline) is performed, removing the liver.
The liver tissue and serum were kept in a deep freezer until analysis.
Uric acid (Uric acid) was measured by serum and urine using a kit (kit) (Bio Vision, K608).
The Xanthine oxidase (xanthene oxidase) inhibitory activity was determined by dissecting liver tissues and sera removed at necropsy using a kit (kit) (Sigma Aldrich, MAK 078).
4-6 statistical analysis
The results of the assay were analyzed using SPSS Statistics 12.0K for Medical Science to examine the significance between the normal group (G1), the control substance-administered group (G3-G4), and the test substance-administered group (G5-G8) and the vehicle control group (G2). The test substance I administration group (G5-G7) was examined for significance by ONE-WAY ANOVA (ONE-WAY ANOVA), and the control substance administration group (G3-G4) and the test substance II administration group (G8) were examined for significance by Student's t-test. When P <0.05, it was judged to be statistically significant.
4-7, animal experiment results
i) General symptoms
No abnormal symptoms or death due to the test substances were observed.
ii) uric acid assay results
Serum uric acid (uricc acid) assay results, a statistically significant increase in uric acid (uricc acid) was observed in the vehicle control group (G2) compared to the normal group (G1) (P < 0.01). Compared with the vehicle control group (G2), the 30% ethanol extract of Rhus succedanea (leaves and stems) of 50, 100 and 200mg/kg administered groups (G5-G7) respectively observed serum uric acid (uric acid) decreases of 15.30%, 17.68% and 21.71%, and compared with the vehicle control group (G2), the hot water extract of Rhus succedanea (leaves and stems) of 200mg/kg administered group (G8) observed a statistically significant 26.92% decrease of serum uric acid (uric acid) (P < 0.05). The Probenecid (Probenecid)50mg/kg administered group (G3) showed no change in serum uric acid (uric acid) compared to the vehicle control group (G2), whereas a statistically significant decrease in serum uric acid (uric acid) was observed in the Allopurinol (Allopurinol)50mg/kg administered group (G4) (P < 0.01).
Urine uric acid (uric acid) assay results, a statistically significant decrease in urine uric acid (uric acid) (P <0.05) was observed in the vehicle control group (G2) compared to the normal group (G1). Neither the 30% ethanol extract of Rhus succedanea (leaves, stems) nor the hot water extract of Rhus succedanea (leaves, stems) group administered (G5-G8) showed statistically significant changes compared to the vehicle control group (G2), but exhibited a tendency to decrease urinary uric acid (uric acid). The Probenecid (Probenecid)50mg/kg administered group (G3) exhibited a tendency of reduction, although not exhibiting a statistically significant difference in urinary uric acid (uric acid), compared to the vehicle control group (G2), and a statistically significant decrease in urinary uric acid (uric acid) was observed for Allopurinol (Allopurinol)50mg/kg administered group (G4) (P < 0.05).
The measurement results are shown in FIG. 2.
TABLE 6
Figure BDA0003815516240000151
The results of the experiment are expressed as [ mean. + -. standard deviation ]. Statistical analysis was performed by boxplot (Box-plot), ONE-WAY analysis of variance (ONE-WAY ANOVA), and Student's t-test. +: has great difference with G1, P <0.05
++: has great difference with G1, P <0.01
*: has great difference with G2, P <0.05
**: has great difference with G2, P <0.01
ii) measurement result of Xanthine oxidase activity
Serum Xanthine oxidase activity (xanthene oxidase activity) assay results no statistically significant change was observed in the vehicle control group (G2) compared to the normal group (G1). The group administered with 30% ethanol extract and hot water extract of Rhus succedanea (leaves, stems) (G5-G8) showed no statistically significant change in serum Xanthine oxidase activity (xanthene oxidase activity) compared to the vehicle control group (G2). Probenecid (Probenecid)50mg/kg dose group (G3) exhibited no statistically significant change in serum Xanthine oxidase activity (xanthene oxidase activity) compared to vehicle control group (G2), whereas a statistically significant decrease in serum Xanthine oxidase activity (xanthene oxidase activity) was observed in Allopurinol (Allopurinol)50mg/kg dose group (G4) (P < 0.01).
Measurement of intrahepatic Xanthine oxidase activity (xanthene oxidase activity) there was no statistically significant change in the vehicle control group (G2) compared to the normal group (G1). Statistically significant reductions in intrahepatic Xanthine oxidase activity (xanthene oxidase activity) were observed for the group administered with 30% ethanol extract of Rhus succedanea (leaves, stems) and 200mg/kg hot water extract of Rhus succedanea (leaves, stems) (G7, G8) compared to the vehicle control group (G2) (P <0.05or P < 0.01). The Probenecid (Probenecid)50mg/kg dosed group (G3) exhibited no statistically significant change in urinary uric acid (uric acid) compared to the vehicle control group (G2), whereas a statistically significant decrease in intrahepatic Xanthine oxidase activity (xanthene oxidase activity) was observed in the Allopurinol (Allopurinol)50mg/kg dosed group (G4) (P < 0.01).
The measurement results are shown in FIG. 3.
TABLE 7
Figure BDA0003815516240000171
The results of the experiment are expressed as [ mean. + -. standard deviation ]. Statistical analysis was performed by boxplot (Box-plot), ONE-WAY analysis of variance (ONE-WAY ANOVA), and Student's t-test. *: has great difference with G2, P <0.05
**: has great difference with G2, P <0.01
5. Simple clinical test
In the simple clinical test, as a result of confirming the uric acid value in serum when the Rhus succedanea extract was taken, there was no change in the uric acid value but it tended to be higher than the initial one when the period of taking the Rhus succedanea extract was less than 2 months. However, after 3 months, the uric acid value tends to be lower than that at the initial stage. From these results, the following were judged: in order to confirm the therapeutic effect on gout using the toxicodendron chinense nakai extract, long-term administration of 3 months or more is required.
The results of confirming the rate of change of initial uric acid value and uric acid value after 3 months showed a rate of change of-33.33 to 33.33, and the average results confirmed that the uric acid value was decreased by taking 15.75% of the Rhus succedanea extract.
TABLE 8
Initial stage After 1 month After 2 months After 3 months Rate of change (early-3 months)
Li xi Cheng 5.7 8 6.1 7.6 -33.33
Shu 6.9 7 6 5.9 14.49
Rate of change 8.8 8.3 9.9 7.2 18.18
Su xi drastic 6 6.4 5.6 4.5 25.00
Sun xing Kun 6.8 8.3 5.7 5.6 17.65
Toy tiger 7.4 8.5 7.4 5.8 21.62
Jinxiong 5.4 6.2 6.5 5 7.41
Plum blossom quine 7.2 7.6 5.9 5.4 25.00
Gold stone 6 6.9 3.7 4 33.33
(xi) jin Xu 10.4 10.8 9.3 7.1 31.73
Root of plum 6.6 7.3 6.2 5.8 12.12
The scope of the present invention is indicated by the appended claims rather than by the foregoing summary, and it should be construed that the meaning and scope of the claims and all changes and modifications derived from the equivalent concept are included in the scope of the present invention.

Claims (7)

1. A composition for preventing, improving and/or treating hyperuricemia, which is characterized by comprising a Rhus succedanea extract.
2. The composition for preventing, improving and/or treating hyperuricemia according to claim 1, wherein the xanthine oxidase inhibitory activity and the uric acid discharge function can be simultaneously performed.
3. The composition for preventing, improving and/or treating hyperuricemia according to claim 1, wherein an antioxidant activity can be performed.
4. The composition for preventing, improving and/or treating hyperuricemia according to claim 1, wherein a function of preventing, improving and/or treating gout, lithangiuria and kidney diseases derived from hyperuricemia is exhibited.
5. The composition for preventing, improving and/or treating hyperuricemia according to claim 1, wherein the Rhus succedanea extract is extracted according to water or a mixture of water and ethanol.
6. A functional food composition for improving hyperuricemia, which is characterized by comprising an extract of Rhus succedanea.
7. The composition for preventing, improving and/or treating hyperuricemia according to claim 6, wherein the Rhus succedanea extract is extracted according to water or a mixture of water and ethanol.
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