Mohammed Ibrahim

Antidiabetic Activity of Vinca rosea Extracts in Alloxan-Induced Diabetic Rats

The present study was carried out to evaluate the antidiabetic activity of Vinca rosea methanolic whole plant extracts in alloxan induced diabetic rats for 14 days. The methanolic whole plant extract at high dose (500 mg/kg) exhibited significant anti-hyperglycemic activity than whole plant extract at low dose (300 mg/kg) in diabetic rats. The methanolic extracts also showed improvement in parameters like body weight and lipid profile as well as regeneration of β-cells of pancreas in diabetic rats. Histopathological studies reinforce the healing of pancreas, by methanolic Vinca rosea extracts, as a possible mechanism of their antidiabetic activity.

Hepatoprotective activity of Melia azedarach leaf extract against simvastatin induced Hepatotoxicity in rats

The aim of the study is to investigate the hepatoprotective activity of Melia azedarach L leaves extracts against simvastatin induced hepatotoxicity. The phytochemical screening was carried on the leaves extracts of Melia azedarach revealed the presence of some active ingredients such as Alkaloids, Tannins, Sponginess, Phenols, glycosides, steroids, terpenoids and flavonoids. Leaves of Melia azedarach was successively extracted with ethanol against simvastatin (20mg/kg.p.o) induced hepatotoxicity using Standard drug Silymarin (25 mg/kg). There was a significant changes in biochemical parameters (increases in serum glutamate pyruvate transaminase (SGPT), Serum glutamate oxaloacetate transaminase (SGOT), alanine phosphatase (ALP),serum bilirubin and decrease the total proteins content.) in simvastatin treated rats, which were restored towards normalization in Melia azedarach (300 mg/kg and 500 mg/kg) treated animals. Thus the present study ascertains that the leaf extract of Melia azedarach possesses significant hepatoprotective activity.

Anti-ulcer activity of cassia auriculata leaf extract

Abstract The present study was carried out to evaluate the anti-ulcer activity of cassia auriculata leaf extract against pylorous ligation induced gastric ulcer. The methanolic leaf extract of cassia auriculata at dose of 300 mg/kg p.o. markedly decrease the incidence of ulcers in pyloric ligatied rats. In pyloric ligated rats, there was an increase in the gastric volume, free and total acidity and ulcerative index as compared to the control group. The methanolic leaf extract of cassia auriculata at dose of, 300 mg/kg showed significant reduction in the above parameters which was comparable to the standard drug famotidine(10 mg/kg). Cassia auriculata extract showed protection index 79.4 %, whereas standard drug famotidine showed protection index 90.7%.

Evaluation of protective effect of Sapindus mukorossi saponin fraction on CCl4-induced acute hepatotoxicity in rats

Aim This investigation aimed to assess the hepatoprotective effect of saponin fraction isolated from the fruit pericarp of Sapindus mukorossi on carbon tetrachloride (CCl4)-induced hepatotoxicity. Methods Fruit of S. mukorossi was collected and authenticated, and dried pericarp powder subjected to extraction with cold ethanol (70%) by maceration followed by isolation of total saponin fraction. Hepatoprotective activity was demonstrated in the CCl4-damaged primary monolayer culture. In in vivo studies, pretreatment with total saponin fraction (50,100 and 150 mg/kg per os once a day for 4 days before CCl4 introduction and continued afterward for 3 days) attenuated the CCl4-induced acute increase in serum glutamic pyruvic transaminase, serum glutamic oxaloacetic transaminase, and alkaline phosphatase activities and considerably reduced histopathological alterations. Further, saponin fraction reduced thiopentone-induced (4 mg/kg, intraperitoneal) sleeping time in rats. Results Saponin fraction pretreatment improves bromsulphalein clearance and also increases cellular viability. Saponin administration replenished depleted hepatic glutathione and superoxide dismutase by improving the antioxidant status of the liver and liver function enzymes. These effects substantiate protection of cellular phospholipids from peroxidative damage induced by highly reactive toxic intermediate radicals formed during biotransformation of CCl4. Conclusion The above findings lead to the conclusion that the saponin fraction of S. mukorossi has a protective capability both in vitro on primary hepatocyte cultures and in vivo in a rat model of CCl4-mediated liver injury. Hence, we suggest that the inclusion of this S. mukorossi fruit pericarp in the management of liver disorders is justified.