Acute toxicological and histopathological elucidation of Rheum emodi rhizome extract to demonstrate antidiabetic activity in alloxan-induced diabetic rats
Background: Rheum emodi been used traditionally to treat diabetes in India. This study was designed to elucidate the action of R. emodi (Rhizome) ethanolic extract (75%) and its isolated compounds like emodin and chrysophanol on alloxan-induced diabetic rats to check the anti-diabetic efficacy. To access acute toxicological and histopathological study to evaluate the anti-diabetic efficacy of R. emodi. Method: Experimental rats were grouped into seven and each group consisting of 6 rats. 75% ethanolic extract and its compounds emodin and chrysophanol were given for 30 days. Results: The experimental rats were sacrificed on 30 days by cervical dislocation. Parameters like renal profile and lipid parameters were determined. As well as histopathological changes in diabetic rat’s liver, kidney and pancreas were studied. The 75% ethanolic extract of R. emodi (EE-ReR) fed orally to diabetic rats, resultant in a decline in the fasting blood glucose, total cholesterol, free fatty acids, creatinine, urea, and a rise in the insulin levels were observed almost normal range in the rats fed with the extract. Histopathological studies of pancreas, kidney, and liver in diabetic rats revealed that the treated group of rats showed regeneration of islets cells to almost as normal. Acute toxicological studies revealed that the extract is safe up to 2000mg/kg bw of extract feed orally. Conclusion: These findings are suggestive of a possible protective and prevent damage to the internal organs played by the R. emodi and its compounds like emodin and chrysophanol compounds and elevate insulin production during high blood glucose levels without any acute toxicologically effect.