Adrenocortical and renin-angiotensin systems in dynamics of experimental diabetes

   
Cherkasova O.P.1 , Selyatitskaya V.G.2

1. Scientific Centre of Clinical and Experimental Medicine, Siberian Branch of the Russian Academy of Medical Sciences; Institute of Laser Physics Siberian Branch of the Russian Academy of Sciences
2. Scientific Centre of Clinical and Experimental Medicine, Siberian Branch of the Russian Academy of Medical Sciences
Section: Experimental/Clinical Study
DOI: 10.18097/pbmc20135902183      UDK: 577.175.5/.852:616.379-008.64:547.854.6:57.084.1      PubMed Id: 23789345
Year: 2013  Volume: 59  Issue: 2  Pages: 183-191
Components of the adrenocortical system (adrenal and blood corticosteroid hormones and hepatic and renal 11b-hydroxysteroid dehydrogenase activity) and also activity of the most important enzyme of the renin-angiotensin system, tissue and blood angiotensin converting enzyme (ACE) have been investigated in dynamics of alloxan diabetes. The study has shown that the initial period of diabetes is characterized by activation of synthesis and secretion of adrenocortical hormones into blood. High blood glucose and glucocorticoid hormones increase activity of the renin-angiotensin system in lungs and decrease ACE secretion into blood. This is accompanied by a decrease of activity of the renin-angiotensin system in kidneys. Subsequent progression of diabetes resulted in impairments of physiologically determined correlations between the components of these systems. Development of experimental diabetes for 30 days was accompanied by sign of a decrease of the adrenal glucocorticoid function regardless of stable impairments of carbohydrate metabolism. Under these conditions increased adrenal and hepatic 11b-hydroxysteroid dehydrogenase activity may be responsible for maintenance of elevated levels of the main glucocorticoid in blood and tissues. Factor analysis revealed impairments in intersystem relationships between the adrenocortical and renin-angiotensin systems in experimental diabetes thus suggesting disintegration of regulatory systems.
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Cherkasova O.P., Selyatitskaya V.G. (2013) Biomeditsinskaya khimiya, 59(2), 183-191.
This paper is also available as the English translation:10.1134/S1990750813010034
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