RESUMEN
OBJECTIVE: To compare the duration and effects of aqueous methanol Acacia-nilotica leaves extract and glibenclamide as hypoglycaemic and hypolipidaemic activity in diabetic rats. METHODS: The experimental study was conducted at Shifa International Hospital in collaboration with National Institute of Health, Islamabad, from September 2010 to August 2011.Male Sprague Dawley albino rats were taken and divided into 8 equal groups. Groups I and II were the normal and diabetic control rats. Diabetes mellitus was induced in group II to VIII by administering 110 mg/kg body weight alloxanand at day 4, fasting blood glucose level of >200 mg/dl confirmed diabetes. Acacia-nilotica leaves extract was given to group III, IV and V and glibenclamide to group VI to VIII for a period of 1-3 weeks. Blood samples were analysed for lipid profile using enzymatic calorimetric method and serum insulin by enzyme-linked immunosorbent assay on days 0, 7, 14, and 21. RESULTS: There were 64 rats in the study, with 8(12.5%) in each group. Statistically significant decreases in fasting blood glucose, total cholesterol, triglyceride, phospholipids, low density lipoprotein, very low density lipoprotein and an increase in high density lipoprotein and serum insulin levels were observed in diabetic rats compared to diabetic controls after 2 weeks of treatment with plant extract and glibenclamide (p<0.05 each).When plant extract and drug treated diabetic rats were compared, a significant difference in the levels of blood glucose, insulin, total cholesterol and triglyceride levels were noted after 2 and 3 weeks of treatment. CONCLUSIONS: Acacia-nilotica leaves extract resulted in hypoglycaemic and hypolipidaemic effect in alloxan-induced diabetic rats similar to glibenclamide.
Asunto(s)
Acacia , Diabetes Mellitus Experimental/tratamiento farmacológico , Gliburida/uso terapéutico , Hipoglucemiantes/uso terapéutico , Fitoterapia , Aloxano , Animales , Diabetes Mellitus Experimental/sangre , Lípidos/sangre , Masculino , Extractos Vegetales/uso terapéutico , Hojas de la Planta , Ratas , Ratas Sprague-DawleyRESUMEN
OBJECTIVE: To determine the effect of estradiol treatment on serum corticosterone levels in Oophorectomized (OVX) female Sprague Dawley rats exposed to chronic restraint stress. STUDY DESIGN: Experimental study. PLACE AND DURATION OF STUDY: Department of Physiology, Army Medical College, Rawalpindi and National Institute of Health, Islamabad, from January to December 2008. METHODOLOGY: A total of 90 female Sprague Dawley rats (age: 90 ± 10 days), were divided into three groups, each having 30 rats. Group-I comprised of healthy control female rats whereas group-II and III were experimental female rats exposed to chronic restraint stress after bilateral Oophorectomy and called estradiol treated and vehicle treated groups. Estradiol treatment of Oophorectomized rats was done once daily for 2 weeks. At the end of experiment, the rats were sacrificed and intracardiac blood sampling was done to measure serum corticosterone levels by enzyme linked immunosorbent assay (ELISA) kit. RESULTS: The restraint stress to estradiol treated rats for 2 weeks revealed that serum corticosterone levels were significantly increased (31.32 ± 5.46 ng/ml, p < 0.05) as compared to the healthy controls (17.48 ± 4.14 ng/ml). CONCLUSION: Chronic restraint stress results increases the serum corticosterone levels in Oophorectomized Sprague Dawley rats. Estradiol treatment increases the responsiveness of adrenal cortex of Oophorectomized female rats.