The influence of the hypoglycemic agent glycorazmulin on the functional state of mitochondria in the rats with streptozotocin-induced diabetes

Abstract

We have studied the state of the mitochondrial permeability transition pore (MPTP), respiration, and oxidative phosphorylation in mitochondria of the liver and pancreas of the rats with streptozotocin-induced diabetes. In addition, we considered the approaches to the correction of membraneous lesions with the help of glycorazmulin, a hypoglycemic preparation based on mumiyo (Jew's tar) and an extract from rhodiola roots and tubers (Rhodiola Semenovii A.). The mitochondria swelling rate in the liver and pancreas of the rats with experimental diabetes mellitus is known to be lower than in the unaffected animals; in other words, hepatic and pancreatic megapores in case of pathology remain open. Glycorazmulin normalizes their state and thereby eliminates the effect of spreptozotocin on mitochondria. The mitochondrial respiration rate in the liver and pancreas of the rats with experimental diabetes inceases at states V3 and V4 which results in a significant decrease of respiratory and ADP/O coefficients compared with the control values. The results of the study suggest decoupling of respiration from oxidative phosphorylation in the rats with experimental diabetes. Glycorazmulin administered per os at a dose of 50 mg/kg b.w. during 8 days eliminated functional disorders of mitochondria in the liver and pancreas of the rats, presumably by virtue of its antioxidative properties.