The generation of reactive oxygen species in diabetes is considered to be the major cause for the mutation related defects such as cancer, infertility etc. Glimepiride (Gmp) is a third generation antidiabetic sulphonylurea known to possess the antioxidant effect in streptozotocin (STZ) induced diabetes. In this study, the anti-mutagenic activity of Gmp (0.175, 17.5 and 175 mg/kg, po daily for 4 weeks) was evaluated against the nicotinamide (NA-230 mg/kg) and STZ (65 mg/kg) induced somatic and germinal cells defect using bone marrow micronucleus (MN) test and sperm abnormality test respectively in male Wistar rats. Administration of Gmp at 175 mg prevented the NA-STZ induced increased frequency of MN in polychromatic and normochromatic erythrocytes. The treatment with Gmp also decreased the sperm shape abnormality and enhanced the sperm count besides improving the antioxidant status in the diabetic rats. However, the other doses of Gmp (0.175 and 17.5 mg) did not produce significant change in the MN frequency and sperm abnormality although Gmp at 17.5 mg showed significant antidiabetic effect in the hyperglycemic animals. The results indicated that Gmp inhibited the NA-STZ mediated changes in the MN frequency and sperm abnormality and enhanced the antioxidant defense. The observations suggest that the antioxidant property of Gmp could have contributed for its ability to decrease the NA-STZ mediated defects in somatic and germinal cells.

/pdf/inhibitory-effect-of-glimepiride-on-nicotinamide-2xyyt0kg0a.pdf

Inhibitory effect of glimepiride on nicotinamide-streptozotocin induced nuclear damages and sperm abnormality in diabetic Wistar rats.

Introduction: A relatively decreased insulin secretion and impaired response of the body to insulin are the common attributes of gestational diabetes mellitus (GDM) and Type 2 diabetes mellitus. The oral hypoglycemic agents are less invasive, improve patients’ compliance, which can be effective in maintaining the blood sugar level during pregnancy. Aim: The overall aim of this research was to ascertain the comparative evaluation of the glimepiride and glipizide on the kidney and some maternal parameters of pregnant streptozotocin (STZ)-induced diabetic rats. Methodology: Thirty-five (35) female Sprague-Dawley rats weighing between 120-160 g were divided into 5 groups. Groups 2-5 were induced with diabetes mellitus by intraperitoneal injection of streptozotocin (STZ). Group 1: (Control given distilled water), Group 2: (Diabetic treated with Glimepiride), Group 3: (Diabetic treated with Insulin), Group 4: (Diabetic treated with Glipizide), Group 5: (Diabetic given citrate buffer). Results: Glimepiride and Glipizide treated groups showed statistically significant (p=0.05) improvement in oxidative stress markers, blood glucose level, body weight, hematological parameters and lipid profile when compared with diabetic and insulin groups. There was statistically significant (p=0.05) improvement on the oxidative stress marker, body weight and the restorative effect on renal histology in the group treated glimepiride when compared with glipizide and diabetic groups. Conclusion: This work has demonstrated that the two oral hypoglycaemic agents were effective in controlling glucose intolerance during pregnancy, renal oxidative stress as well as cytoarchitectonic properties of the kidney comparable with insulin. Therefore, because of its ameliorative and restorative effects on renal oxidative stress and micro-architectonic properties of the kidney, glimepiride could be tempting alternative drug of choice for adequate control of glucose intolerance during pregnancy.

Comparative Studies on Safety of Glimepiride and Glipizide on Renal Microarchitecture and Oxidative Stress Markers of Pregnant Streptozotocin-Induced Diabetic Wistar Rats

In 1997, there were an estimated 15.7 million Diabetics in the United States alone, with an additional 798,000 new cases diagnosed each year. Diabetes Mellitus is characterized by abnormal glucose homeostasis, resulting in chronic hyperglycemia. Prolonged hyperglycemia has been associated with retinopathy, peripheral neuropathy, autonomic neuropathy, coronary artery disease, peripheral vascular disease, and nephropathy. As Primary care providers, we need to seek out better and more effective treattnents for this devastating disease. This paper will discuss: pharmacodynamics, pharmacokinetics, current research, adverse effects, and possible treatment options of diabetic agents lispro, troglitazone, glilnepiride, metformin, and acarbose.

A New Era in Diabetic Agents: Hope for Diabetics

Glimepiride and glibenclamide have comparable efficacy in treating acute ischemic stroke in mice

Much of our present knowledge concerning the etiopathogenesis, treatment and prevention of human diabetes would never have been acquired without the study of animal models of diabetes. The main models of IDDM may be divided into two groups: induced (through pancreatectomy, chemicals such as alloxan and streptozotocin, viruses and others) and spontaneous (mainly using BB rats and NOD mice). The latter, at different ages, develop a diabetic syndrome, with clinical characteristics, genetics and immunology that are very similar to the human disease. Among the more significant differences are lymphopenia (in BB rats) and the predominance of diabetes in females (in NOD mice). Studies aimed at preventing IDDM have advanced by leaps and bounds by using the two spontaneous models. These include various methods such as genomic modification, an influence over some environmental agents, immunosuppression, immunotherapy, immunomodulation and tolerance induction as well as protection of the beta-cell from autoimmune attack. The conclusions drawn from animal experiments have allowed some human trials to be carried out with encouraging results.

Animal models of type I (insulin-dependent) diabetes mellitus.

Glimepiride-induced prevention of diabetes and autoimmune events in the BB rat: revised.

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Glimepiride-induced prevention of diabetes and autoimmune events in the BB rat: revised.