The effect of flavonoid quercetine on the indices of nitric oxide system in rats with chronic enterocolitis combined with streptozotocin-induced diabetes.

Objective: Introduction: Chronic hyperglycemia is accompanied by significant physiological, biochemical, and histological changes, e.g. development of oxidative and nitrosative stress that affects the motor activity of the intestine. The aim: The present study was designed to evaluate the indices of nitric oxide (NO) system in blood serum and a colon tissue supernatant of rats with chronic enterocolitis combined with streptozotocin-induced diabetes.

Patients And Methods: Materials and methods: The total NOS activity was performed by monitoring the rate of conversion of L-arginine into citrulline. The total contents of NO metabolites was assessed by evaluation of their amount, which included nitrite ions that were previously presented in the sample (NO2-) and also nitrate ions reducted to nitrites (NO3-).

Results: Results and conclusions: Thus, in rats with modeled chronic enterocolitis activation of nitroxydergic process in blood serum and colon tissue has been established. Herewith more pronounced intensification of nitroxydergic processes was observed in rats with chronic enterocolitis combined with streptozotocin-induced diabetes. The liposomal form of quercetin - Lipoflavon significantly reduces nitrosative stress in rats with chronic enterocolitis combined with streptozotocin-induced diabetes.