Key result
Experimental diabetes for 30 days was accompanied by a decrease in adrenal glucocorticoid function and impairments in intersystem relationships between adrenocortical and renin-angiotensin systems.
Experimental diabetes induces progressive dysregulation and disintegration of the adrenocortical and renin-angiotensin systems over time.
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Hypothesis-generating in diabetic rats; leaves open whether adrenocortical-RAAS dysregulation contributes to human complications.
Components of the adrenocortical system (adrenal and blood corticosteroid hormones and hepatic and renal 11beta-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 honnones 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 11beta-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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Черкасова et al. (2013) studied Experimental diabetes (alloxan diabetes). Experimental diabetes was evaluated on Components of the adrenocortical system and renin-angiotensin system. Experimental diabetes for 30 days was accompanied by a decrease in adrenal glucocorticoid function and impairments in intersystem relationships between adrenocortical and renin-angiotensin systems.
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