The interplay between oat beta glucan, gut microbiota and gut-liver axis in treatment of obesity associated non-alcoholic steatohepatitis and Type II diabetes mellitus

Ghalwash, Asmaa Abd El-mottaleb; A Baalash, Amal ; K Gaafar, Nagah ; E Wasfy, Rania ; El-Din A Noeman, Saad

Abstract

Dietary fibers regulate host health through various mechanisms related to their physicochemical structure and physiological properties in the gut. The interplay between diet, gut microbiota and human host appear to play a significant role in pathogenesis of obesity associated complications. This study was designed to unravel oat beta glucan modulatory effect on non-alcoholic steatohepatitis and type II diabetes mellitus in high fat fed rats and to explain possible pathomechanics involving gut microbiota and gut liver axis. Sixty male albino rats were included and randomly divided into four equal groups: control group; positive control group; diet induced obesity group; oat beta glucan treated group. All were subjected to assessment of glycemic profile; liver enzymes; serum trimethylamine-N-oxide levels; hepatic G-protein coupled receptor 43 relative gene expression. Histopathological examination of hepatic tissue was performed. Results revealed that oat beta glucan administration improved the biochemical changes. The histopathological findings confirmed the biochemical changes. Gut microbiota appeared to be highly implicated via its metabolites short chain fatty acids and trimethylamine. Our conclusion was that oat beta glucan was a successful compliance in the management strategy of hepatic steatosis and diabetes mellitus via modulating a number of gut microbial products.

Keyword(s)

Dietary fibers; G-protein coupled receptors; Insulin; Trimethylamine-N-oxide

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