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Method for experimental prevention of age-related changes in hepatic tissue. RU patent 2482873.

IPC classes for russian patent Method for experimental prevention of age-related changes in hepatic tissue. RU patent 2482873. (RU 2482873):

A61P1/16 - for liver or gallbladder disorders, e.g. hepatoprotective agents, cholagogues, litholytics
A61K38/43 - Enzymes; Proenzymes; Derivatives thereof
A61K36/899 - PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J0003000000; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L)
A61K35/66 - Materials from micro-organisms
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FIELD: medicine.

SUBSTANCE: invention refers to medicine and is intended to prevent the age-related changes of hepatic tissue in rats experimentally. What is used is the biologically active additive "Rekicen RD" added to the diet of inbred laboratory rats at the age of two years old. A dose is 2 grams a day for 14 days.

EFFECT: method enables improving the hepatic tissue state ensured by increasing the regeneration activity of hepatocytes.

3 ex

 

The invention relates to the experimental medicine and can be used to activate the regeneration potential of the liver tissue of old laboratory animals, namely rats, aged two years. Rats at the age of two years is considered old (Saifutdinov A.I. Structural changes in hepatocytes of the white rats of different ages when you stay in conditions of high mountains (experimental study), author's abstract of dissertation for the degree of candidate of medical Sciences, Novosibirsk, 1994, 22 C.).

There are some age-related changes of the liver tissue. So, with age increases the number of hepatocytes with signs of damage and reduced regenerative capacity of the liver tissue (Saifutdinov A.I. Structural changes in hepatocytes of the white rats of different ages when you stay in conditions of high mountains (experimental study), author's abstract of dissertation for the degree of candidate of medical Sciences, Novosibirsk, 1994, 22 C.; Krokhin NB Age peculiarities of regenerative processes in the liver of patients with chronic active hepatitis, Avtoreferat Diss. on . very helpful and pleasant. step. kand. honey. of Sciences, Yekaterinburg, 2004, 127 S.). In the available literature is not found ways to prevent age-related changes of the liver tissue of old laboratory animals.

The technical result: the improvement of liver tissue by increasing the regenerative activity of hepatocytes.

This is achieved by adding a standard diet of laboratory animals of the product containing the fermented dietary fiber and short-chain fatty acids, dietary SUPPLEMENTS, «-RD ® » (production of JSC «Berry», Kirov), which is introduced in the diet for 2 grams per day for 14 days.

Way is as follows:

Old laboratory animals, namely rats aged two years contained on a standard diet vivarium, add to food product containing fermented dietary fiber and short-chain fatty acids, dietary SUPPLEMENTS, «-RD ® » (production company «Berry», Kirov), in the amount of 2 grams per day for 14 days.

For prophylaxis of age-related changes of the liver tissue of old laboratory animals, this product has not been previously used.

In the preparation of the liver, painted -eosin, using a light microscope using immersion (increase in 1000) in ten fields of view has been evaluated by the following indicators: the percentage of two - and hepatocytes, which is an indicator reflecting the regeneration of liver tissue, and the percentage of cells with signs of and , which is indicator, reflecting the damage to liver tissue ( IM Role of chorionic gonadotropin in the structural-functional provision of ontogenesis mammals in norm and pathology. 2003, http://www.medicum.nnov.ru/nmj/2003/1/14 .php; Saratikov A.S., A.V. Frolov, V.N. Chuchalin B.C. Correction toxicity of cyclophosphamide with liver protecting drugs polyphenol nature. Bulletin of Siberian medicine. - 2004, №1, P.52-56; E.V., I.A. Morphological changes in the liver and bodies of immunogenesis in cardiovascular diseases. Kursk scientific and practical Bulletin of the "People & health". - 2006, №4 - P.25-28).

BAD «-RD ® » (dietary fiber wheat bran, fermented wine yeast) (production company «Berry», Kirov) - biologically active additive to food, used to eliminate the deficit of food fibres and their metabolites (short-chain fatty acids in human nutrition. BAD «-RD ® » is used for prophylaxis and dietary treatment options of pathology, arising as a result of lack of fibre in the human diet (V.F. Kuznetsov, Kulemin L.M., V.M. Bondarenko Fermented dietary fiber and short-chain fatty acids in functional food in human pathology. Medical almanac. - 2008, №2 - p.88-89).

Examples of specific use:

Example 1.

Male white rats from the age of two, contained on a standard diet vivarium, mass 228 grams. When histological study of the drug liver percentage number of two - and three-nucleus nuclear hepatocytes amounted to 1.6%, the percentage of hepatocytes with signs and amounted to 35.5%.

Example 2.

Male white rats from the age of two, contained on a standard diet vivarium, received in addition BAD «-RD®» in the amount of 2 grams per day, a mass of 239 grams. In the study of liver histological slide the percentage of two - and three-nucleus hepatocytes was 10%, the percentage of hepatocytes with signs and amounted to 15%.

Example 3.

Male white rats from the age of two, contained on a standard diet vivarium, received in addition BAD «-RD®» in the amount of 2 grams per day, mass 316 grams. In the study of liver histological slide the percentage of two - and three-nucleus nuclear hepatocytes was 9,06%, the percentage of hepatocytes with signs and made 17.3%.

The entire study was conducted on 15 male white rats, aged two years. The animals were divided into two groups: a control group of animals that are on the standard diet of the control group (n=8), the experimental group - animals that are on the standard the diet of the control group (n=7), received in addition to a standard diet laboratory animals - BAD -RD®» (production of JSC «Berry», Kirov), on 2 grams per day for 14 days. Statistical processing of the obtained results was performed using the criteria of a non-parametric statistics. Calculate the median (Me), scale (25%-75%), to assess the reliability of differences between two unrelated groups have used double-sided (exact) Mann-Whitney criterion.

The percentage of two - and hepatocytes in the control group was 2,52% (1,27-3,63%), and in the experimental group 10,96% (9,34-13,25%) (p U =0,00058). The percentage of hepatocytes with signs and was in the control group 30,45% (24,46-35,55%), and in the experimental group 17.3% (to 14.32-19,97%) (p U =0,00233).

Positive effects of the appointment BAD «-RD®» old laboratory rats is the faithful increasing the quantity of fissile hepatocytes and reducing the number of cells with signs of damage that the totality of the evidence about the activation of regenerative processes of the liver and reducing the severity of age-related changes.

The method of prophylaxis of age-related changes of the liver tissue in the experiment, which consists in the fact that the old laboratory rats, located on the customary diet of the vivarium, within 14 days appoint BAD «-RD®» in the amount of 2 grams per day, mixing it with food.


 

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