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Biomedical subjects

A S Zaks

Publications and source records attributed to A S Zaks.

At least 19 recordsLinked to original sources
PubMed1980

Cellular component of the immune mechanism of maintaining chemical homoeostasis in the internal environment of the organism.

In the study of obtained data on the part of immune mechanism in maintaining chemical homeostasis the authors found, by means of in vitro experiments, certain properties characterizing participation of the lymphatic apparatus of various rabbit and rat organs in the synthesis of antibodies against mediators, their metabolites, enzymes and hormons in comparison with effect of stimulators, [fytohemagglutinin, staphylococcal filtrate, xenogenic mixed lymphocytic cultures], active and passive immunization of potential cell preparations for the production of specific autoantibodies. Formation of the mechanism is shown on ontogenesis. It was ascertained that pathologic processes [adjuvant arthritis, rejection reaction, immobilization stress, sepsis] essentially act upon conditions of the immune mechanism of chemical homeostasis.

Animals↗
PubMed1977

[Immune mechanism of regulating the balance of chemical compounds of endogenous origin].

Specific autoantibodies of neutralizing character to histamine, serotonin, kallikrein, bradykuinine, acetylcholine, adrenalin, noradrenalin, insulin, and to the serotonin metabolite--5-hydroxyindolacetic acid, were found in donor serum (47.2%) and in intact rabbits, guinea pigs, rats, and mice (24.4%). Anti0odies to histamine, serotonin, kallikrein were found in a number of samples of commercial gamma-globulin. They were relatively often observed during the morning and day-time hours, in summer and in winter, in luteal phase of menstrual cycle, early in pregnancy (6-8 weeks), after surgical treatment, burns, inflammation, administration of foreign albumin, in the course of immunization by different antigens. The results of fractional analysis of serum showed that antibodies belonged to immunoglobulins with the constant of sedimantation 7S and 19S. The data obtained suggest the existence of an immune mechanism for the content regulation of different substances of endogenous origination in any organism.

Acetylcholine↗
PubMedDate not supplied

[Bioneutralizing properties of antibodies to serotonin].

Experiments conducted on rabbits demonstrated formation of antiserotonin antibodies in response to introduction to the animals of a serotonin-proteinic conjugate. The effect of antibodies on the development of a serotonin- and dextran-induced inflammation in rats and on the serotonin level in cells of slices of their organs, as well as in the blood thrombocytes was studied. The antibodies were found to produce an antiphlogistic effect in regard to exogenous (serotonin-induced) and endogenous (dextran-induced inflammation) serotonin. Histochemical investigations showed the antibodies to exert a neutralizing action on intracellular serotonin.

Animals↗
PubMedDate not supplied

[Anti-inflammatory properties of some immunodepressants].

As evidenced from experiments conducted on rats immunodepressants-antimetabolites 6-mercaptopurine, methotrexate and 5-fluoruracil exert an antiexudative action and inhibit inflammation in its proliferative phase, as well as significantly change the count of leucocytes and their formula in the peripheral blood. It was established that the anti-exudate properties of these compounds may not be related to their immunodepressive action, while inhibition of proliferation is occasioned by their specific cytostatic effect.

Agar↗
PubMedDate not supplied

[Effect of autonomotropic agents and their combinations with amidopyrine on aesptic inflammation and vascular permeability].

Experiments staged on rats demonstrated the display of antiexudative activity by phepracet, deseryl, chlorpromazine, phentolamine and sanotension in an inflammation produced through subplantar introduction of the Difco agar. Some of the above agents suppressed the reaction in response to dimethyl sulfoxide injection. The antiedematous and stabilizing the cellular membranes effects of amidopyrine were potentiated by using the latter in combination with sympatholytics and also with benactyzine. No synergism with respect to changes of the vascular permeability and kinnase activity of the blood was revealed.

Acetamides↗
PubMedDate not supplied

[Immune and autoimmune reactions in the mechanism of action of drug substances, their detoxication and the development of habituation to them].

It has been shown that rausedyl administration is followed by enhanced synthesis of autoantibodies to serotonine and adrenaline. Meanwhile bucarban enhances the synthesis of autoantibodies to endogenous insulin and ACTH to hydrocortisone and testosterone. Activation of the autoimmune system of regulating the balance of endogenous compounds was shown by an increased number of specific antibody-producing cells in the organs and tissues and by the growth of the titer of circulating antibodies in the blood.

Animals↗
PubMedDate not supplied

[Spasmolytic and anti-inflammatory activity of 8-hydroxyquinolines].

It has been shown that quinozole (aqueous solution), enteroseptol and nitroxoline (suspension with Tween-80) in a concentration of 0.2 X 10(-6)-1.10(-5) decrease the tone of the rat and guinea-pig ileum and diminish their peristalsis. When administered in the same concentrations quinozole removes or prevents the spasmogenic effects of barium chloride (1 X 10(-5)-4.10(-5), of histamine (2 X 10(-5) and -6) but not of acetylcholine (1 X 10(-6)). When administered orally in a dose 50 mg/kg to rats enteroseptol and nitroxoline inhibit the serotonin-, agar- and carrageenin-induced edemas of the rat paws without changing the response to subplantar injection of histamine. The data obtained should be taken into consideration during the use of 8-hydroxyquinolines as antimicrobial substances.

Animals↗
PubMedDate not supplied

[Autoimmune and diabetogenic effects of bucarban].

Experiments on animals were made to study the diabetogenous effect of repeated administrations of bucarban. The drug-induced immunization and insulin release were accompanied by the increased immune response of the humoral and cellular types specific for bucarban and insulin as well. The changes in the animals' immune status were accompanied by disorders of carbohydrate and lipid metabolism, characteristic for diabetes mellitus and by a lowering of the hypoglycemic effect of the antidiabetic drug in question. It was shown for the first time that the changes in carbohydrate, lipid and lipoprotein blood indicators seen in the animals given sulfanilamide antidiabetics occur in the presence of intense autoimmune response to the body own insulin and are undoubtedly related to this response.

Animals↗