Médecine moléculaire et génétique

Effect of Melatonin and Chromium Picolinate Administration to High Carbohydrate Diet-Fed Male Wistar Rats

Abstract

Doddigarla Z, Parwez I, Abidi S and Ahmad J

Based on the hypothesis that consistent high carbohydrate diet (HCD) can induce insulin resistance (IR), the present study therefore investigated the induction of IR by feeding HCD. Novelty of the study is to evaluate the effects on pancreas, liver, and kidney tissues histology after eight weeks administration of melatonin and chromium picolinate (CrPic) either in single or in combination (melatonin+CrPic) to HCD rats’ respectively. The male Wistar rats were divided into five groups of six rats each. Group I served as control to which normal diet was given, while unlimited HCD was given to group II Group III, IV, and V were also given melatonin, CrPic, and melatonin+CrPic along with HCD in that order. Histopathologic findings of HCD rat pancreatic tissue suggested that the diet altered the normal structure of islets with concomitant lesser cytoplasmic granularity in acinar cells. HCD rat liver showed enlarged hepatocytes with narrowing of sinusoidal spaces. Results revealed after administration of melatonin and CrPic either in single or in combination (melatonin+CrPic) to HCD rats for 8 weeks normalized pancreas and liver alterations when compared with HCD rat pancreas and liver tissues respectively. The present study clearly shows that HCD-fed male Wistar rats that are destined to attain IR and T2DM through diet can be prevented by giving melatonin and CrPic administration in alone or in combination. Promoting this research area through in vitro and in vivo studies will help us to understand melatonin+CrPic mechanistic insights that may ultimately assist clinicians in controlling hyperglycaemia by supplementing as an add-on therapy.