Investigation of Antidiabetogenic Effect of the Iodine-Selenium Concentrate in Animals with Chronic Alloxan Diabetes of Varying Severity

BACKGROUND: The diabetogenic effect of alloxan is known is determined by ability to stimulate lipid peroxydation processes in B-cells of the pancreas. AIM: to investigate of the possible antidiabetic action of long time prolonged of Iodine-Selenium concentrate action in rats with alloxan diabetes. METHODS: Reproduction of experimental alloxan diabetes was carried out in rats by a single intravenous injection of alloxan 35-43 mg / kg body weight. The “iodine-selenium” concentrate was administered per os through a tube at the rate of 1.25 ml / 100 g of the concentrate. In experimental animals with mild and heavy diabetes mellitus, the level of glucose in the blood was assessed, products of LPO-AOD; the state of the histostructure of the pancreas and of insulin content in B cells were studied using of aldehyde fuchsin and diethylpseudoisocyanine methods. RESULTS: Long time prolonged administration of the “iodine-selenium” concentrate (60 days) to animals with mild experimental diabetes mellitus is accompanied by a significant decrease in blood glucose levels by 1.89 times compared to the control (p ˂ 0.05) and of LPO within normal values as by increase of the level of glutathione peroxidase (GPO) by 2.23 times compared with the initial (p˂ 0.01), by prevention of the development of histological changes in pancreatic islets and a slight decrease of insulin content in B-cells. Under similar experimental conditions in animals with severe alloxan diabetes, the level of glycemia significantly decreased from 20.23 ± 2.15 mmol / l to 12.39 ± 1.52 mmol / l as of the level of diene conjugates of erythrocytes and plasma, as decrease of ketodienes, MDA of plasma and in erythrocytes and primary lipid peroxidation products, while remaining elevated, despite an increase in GPO by 50.0% compared with control (p˂0.05) in the presence of histological changes in the pancreatic islets as in experimental diabetes. CONCLUSION: The antidiabetic effect of the “iodine-selenium” concentrate in rats with mild alloxan diabetes on the level of glycemia, LPO - AOD and state of the histostructure of the pancreas and the content of deposited insulin in pancreatic B-cells, is probably due to antioxidant effect of selenium to stimulate activity of glutathione blocking lipid peroxide and hydrogen peroxide in alloxan diabetes mellitus.

Comparative study of the neuroprotective activity of lithium compounds and their effect on the course of experimental alloxan diabetes mellitus in rats

A comparative study of the effects of an inorganic lithium salt (lithium carbonate) and an organic lithium salt (lithium ascorbate) on a model of alloxan diabetes mellitus was conducted. The use of lithium ascorbate for a month in experimental alloxan diabetes mellitus facilitates its course – the survival rate of animals increases, the level of glycemia decreases (especially when administered at a dose of 10 mg/kg). Morphometric analysis showed that lithium ascorbate in alloxan diabetes has a neuroprotective effect, which is manifested in a decrease in toxic damage to neurocytes with an increase in the number of cells with reversible changes and intact neurons. Lithium carbonate at doses of 5 and 10 mg / kg was not effective.

Mafusol and its combination with REXOD as correctors of reduced blood circulation in the skin associated with normoglycemia or diabetes mellitus complicated by exogenous hypercholesterolemia

Introduction: The search for and development of new highly active medications and their combinations of the appropriate direction of action remains an urgent problem due to the complications of diabetes mellitus, especially burdened with atherosclerosis, including skin and vascular lesions. Materials and methods: The acute toxicity, histoprotective and dermatoprotective effects of mafusol, rexod, alprostadil and their combinations were studied in male rats with normoglycemia and alloxan diabetes complicated by exogenous hypercholesterolemia. Results: The combination of mafusol with rexod is less toxic than mafusol. In arteriovenous insufficiency of the tail, ischemia of the skin fold and skin flap, mafusol (6.25, 12.5 and 25.0 mg/kg in terms of fumarate), rexod (0.01 and 0.02 mg/kg) and especially their combination (6.25 and 0.01 mg/kg) have significant histoprotective, dermatoprotective, hypoglycemic and lipid-lowering effects, both in normoglycemia and alloxan diabetes complicated by exogenous hypercholesterolemia. Alprostadil (10 mg/kg) and especially its combination with mafusol (6.25 mg/kg) have a dermatoprotective effect. Discussion: Rexod reduces the acute toxicity of mafusol. The dermatoprotective effect of mafusol, rexod and, to a greater extent, their combination may be associated with increased microhemocirculation, antihypoxic properties and activation of energy processes in the skin, normalization of carbohydrate and lipid metabolism in alloxan diabetes, complicated by exogenous hypercholesterolemia, increased reserve capacity of the antioxidant system, and possibly with the ability of mafusol and rexod to reduce blood viscosity and improve rheological properties of the blood. The combination of mafusol with alprostadil increases the dermatoprotective activity of the latter. Conclusion: Combinations of mafusol with rexod and alprostadil can be recommended for clinical study as dermatoprotective agents for treating traumatic injuries and diabetes mellitus complicated by atherosclerosis.

Technology of obtaining a food additive from citrullus colocynthis and its hypoglycemic activity

The aim of the study is to develop a technology for obtaining a food additive for the extract of the pulp of bitter watermelon - Citrullus colocynthis, introduced in Uzbekistan as a hypoglycemic agent. Pharmacological studies have shown the presence of a hypoglycemic effect for aqueous and alcoholic extracts and 2-O-β-glucopyranosyl-cucurbitacin E in rats with alloxan diabetes mellitus. Cucurbitacins were isolated from the extract - cucurbitacin E, 2-O-β-glucopyranosyl-cucurbitacin E and other bioactive substances. The food supplement obtained from bitter watermelon (Citrullus colocynthis (family Cucurbitaceae)) according to the developed technology showed a higher hypoglycemic activity compared to the drug arfazetin.

Comparative characteristics of the effect of the drug based on amantadine hydrochloride on changes in the titers of neuromarkers in experimental iatrogenic compression-toxic lesions of the lower alveolar nerve in normoglycemic rabbits and on the background of alloxan diabetes

Resume. Under the conditions of an experimental study of normoglycemic animals and the creation of aloxan sugar diabetes (ASD) as a premorbital background, iatrogenic damage to the lower alveolar nerve by filling materials based on resorcinol-formalin and epoxy resin causes destructive - degenerative changes, as evidenced by an increase in neuromarker titers NSE and S100 protein. After a 30-day therapy with a drug based on amantadine hydrochloride at a dose of 10 mg / kg, both indicators in both study groups significantly decreased. The titers of NSE and S100 protein in the group with ASD in both subgroups were 1.94 times, and 1.87 times less, which indicates the effectiveness of its use in this pathology, but compared with the group of normoglycemic animals, these indicators were 1.1 times and 1.72 times less, which occurred against the background of a parallel decrease in S 100 protein titers by 1.99 and 2.04 times, which indicates the presence of neuroprotective activity in this drug. This, in turn, is conducive to its further clinical research and the involvement of a drug based on amantadine hydrochloride in the main protocol for the treatment of patients with diabetes. Key words: iatrogenic compression-toxic lesion of the lower alveolar nerve, aloxan sugar diabetes, neuron-specific enolase, S 100 protein, amantadne hydrochloride, neuroprotection.

Effect of jerusalem artichoke extract on the functioning of malate dehydrogenase in the liver of rats with alloxan diabetes

An increase in the activity and the appearance of a new isoform of NAD-dependent malate dehydrogenase (MDH; EC 1.1.1.37) has been detected in the liver of rats with alloxan diabetes was revealed. This confirms the possibility of MDH involvement in the adaptive reaction of the body under oxidative tress caused by biochemical changes in diabetic animals. The increase in the hepatic MDH activity in rats with experimental type I diabetes mellitus (T1DM) is associated with the formation of an additional MDH isoform in peroxisomes. Data on the expression of the MDH encoding genes mdh1 and mdh2 confirm that in T1DM the increase in MDH activity occurs at the level of transcription of MDH encoding genes. The use of the extract of Helianthus tuberosus led to a marked decrease in the blood glucose concentration of rats with alloxan diabetes, abolished by the change in transcriptional activity of the studied genes and blocked the formation of new MDH isoforms in rats with experimental alloxan diabetes. This suggest that extract of H. tuberosus may be of considerable interest from the point of view of pharmacological correction of metabolic changes during the development of pathologies of this kind.