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1.
Vopr Med Khim ; 35(1): 137-40, 1989.
Artigo em Russo | MEDLINE | ID: mdl-2741392

RESUMO

125I-p-iodophenyllaurate proved to be a suitable substrate of lipase for studies of pancreas lipolytic function in vivo and in vitro. After peroral administration into rats the drug was hydrolyzed by lipase. The liberated 125I-p-iodophenol was absorbed in intestine and excreted with urine either as free 125I-p-iodophenol or its conjugates. Activity of pancreatic lipase was measured on the basis of radioactivity estimation of urine per min.


Assuntos
Ácidos Láuricos , Lipase/análise , Pâncreas/enzimologia , Animais , Radioisótopos do Iodo , Ratos , Trioleína/urina
2.
Vopr Med Khim ; 34(5): 66-72, 1988.
Artigo em Russo | MEDLINE | ID: mdl-3218143

RESUMO

Dynamics of distribution and excretion with urine of 125I-p-iodophenamine were studied impairment of rat liver tissue microsomal oxidation by means of CC14 treatment. This poison inhibited distinctly metabolism and excretion of the labelled compound in rats but not in rabbits, which was due to difference in the mechanisms of the compound biotransformation. The requirements for compounds suitable for studies of microsomal oxidation by means of excretory test were not met by 125I-p-iodophenamine.


Assuntos
Anfetamina , Intoxicação por Tetracloreto de Carbono/diagnóstico , Sistema Enzimático do Citocromo P-450/metabolismo , Microssomos Hepáticos/metabolismo , Anfetamina/urina , Animais , Intoxicação por Tetracloreto de Carbono/urina , Estudos de Avaliação como Assunto , Feminino , Radioisótopos do Iodo , Rim/enzimologia , Fígado/enzimologia , Masculino , Microssomos Hepáticos/enzimologia , Oxirredução , Coelhos , Ratos
11.
Probl Endokrinol (Mosk) ; 26(4): 77-81, 1980.
Artigo em Russo | MEDLINE | ID: mdl-7413617

RESUMO

Intraperitoneal injection of hydrocinnamic (beta-phenylpropionic) acid inhibited gluconeogenesis from 14C-1-alanine, 14C-1-oleate oxidation, and intensified 14C-1-glucose oxidation in normal and diabetic rats. Hydrocinnamic acid induced significant hypoglycemia in intact animals and normalized hyperglycemia in rats with alloxan diabetes in the course of 24 hours after the administration. Phenformin proved to decrease glucose oxidation in the intact and diabetic rats, producing no marked effect on fatty acid oxidation, whereas in intact animals it caused moderate hypoglycemia and failed to influence hyperglycemia in the rats with alloxan diabetes. Fatty acid oxidation inhibitors are suggested as means of pathogentic therapy in diabetes mellitus.


Assuntos
Cinamatos/uso terapêutico , Diabetes Mellitus Experimental/tratamento farmacológico , Hipoglicemia/induzido quimicamente , Aloxano , Animais , Antioxidantes , Avaliação Pré-Clínica de Medicamentos , Ácidos Graxos/metabolismo , Hipoglicemiantes , Masculino , Oxirredução/efeitos dos fármacos , Fenformin/uso terapêutico , Ratos
15.
Probl Endokrinol (Mosk) ; 24(5): 73-6, 1978.
Artigo em Russo | MEDLINE | ID: mdl-704562

RESUMO

Experiments on intact hungry rats showed hydrazine, gluconeongenesis inhibitor, to cause hypoglycemia; it failed to influence glucose utilization and oxidation, and sharply decreased oleate exidation. Hydrazine inhibition of fatty acids (oleate) oxidation and of gluconeogenesis led to practical normalization of blood glucose level, and also to the utilization and oxidation of glucose in alloxan diabetes. It is postulated that agents with an analogous action mechanism could prove to be effective antidiabetic agents.


Assuntos
Diabetes Mellitus Experimental/metabolismo , Ácidos Graxos/antagonistas & inibidores , Gluconeogênese/efeitos dos fármacos , Glucose/metabolismo , Animais , Glicemia/análise , Diabetes Mellitus Experimental/tratamento farmacológico , Jejum , Hidrazinas/uso terapêutico , Masculino , Ácidos Oleicos/antagonistas & inibidores , Oxirredução , Ratos , Fatores de Tempo
18.
Probl Endokrinol (Mosk) ; 22(1): 42-6, 1976.
Artigo em Russo | MEDLINE | ID: mdl-943785

RESUMO

Acetate-1-C14 was administered to rats 18 hours before the administration of hydrocortisone for the purpose of studying the action of this hormone on lipid mobilization. Blood plasma and adipose tissue lipid content failed to change, but it decreased in the liver. Hydrocortisone accelerated the elimination of the label from lipids of the liver, did not alter the radioactivity of blood plasma lipids and stimulated accumulation of endogenous label in the lipids of adipose tissue. An acceleration of lipid catabolism in the liver and of lipid anabolism in the adipose tissue was accompanied by stimulation of gluconeogenesis in the liver from the endogenous precursors. In discussing the materials the primary role of intensification of gluconeogenesis in the liver in the mechanism of the regulating action of glucocorticoids on lipid metabolism was postulated.


Assuntos
Tecido Adiposo/metabolismo , Hidrocortisona/farmacologia , Metabolismo dos Lipídeos , Fígado/metabolismo , Acetatos/metabolismo , Animais , Glicogênio Hepático/metabolismo , Masculino , Ratos
20.
Probl Endokrinol (Mosk) ; 21(5): 68-73, 1975.
Artigo em Russo | MEDLINE | ID: mdl-1228753

RESUMO

A study was made of the intensity of lipid synthesis in the liver and adipose tissue of rats following a single administration of hydrocortisone (3, 6, 24 and 48 hours) from various labeled precursors. In the liver the hormone stimulated the synthesis of lipids from the acetate-I-C14 and lactate 1,3-C14 but blocked the lipogenesis from glycerine-1,2-C14 and glucose-1-c14. In the adipose tissue hydrocortisone intensified the lipid synthesis from glucose-1-C14 only and inhibited the lipid synthesis from other precursors. The action mechanism of the hormone on the lipogenesis is considered in association with the primary intensification of gluconeogenesis in the liver.


Assuntos
Tecido Adiposo/metabolismo , Hidrocortisona/farmacologia , Lipídeos/biossíntese , Fígado/metabolismo , Acetatos/metabolismo , Tecido Adiposo/efeitos dos fármacos , Animais , Glucose/metabolismo , Glicerol/metabolismo , Lactatos/metabolismo , Fígado/efeitos dos fármacos , Masculino , Ratos
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