Putative Mechanisms Responsible for the Antihyperglycemic Action of HII01 in Experimental Type 2 Diabetic Rats

Overview

Journal Nutrients

Date 2020 Oct 6

PMID 33019697

Citations 13

Authors

Parichart Toejing

Nuntawat Khat-Udomkiri

Jannarong Intakhad

Sasithorn Sirilun

Chaiyavat Chaiyasut

Narissara Lailerd

Affiliations

Soon will be listed here.

Abstract

Despite the updated knowledge of the impact of gut dysbiosis on diabetes, investigations into the beneficial effects of individual bacteria are still required. This study evaluates the antihyperglycemic efficacy of HII01 and its possible mechanisms in diabetic rats. Diabetic rats were assigned to receive vehicle, HII01 (10 CFU/day), metformin 30 (mg/kg) or a combination of HII01 and metformin. Normal rats given vehicle and HII01 were included. Metabolic parameters, including in vitro hemi-diaphragm glucose uptake, skeletal insulin-signaling proteins, plasma lipopolysaccharide (LPS), gut permeability, composition of gut microbiota and its metabolites, as well as short-chain fatty acids (SCFAs), were assessed after 12 weeks of experiment. The results clearly demonstrated that HII01 improved glycemic parameters, glucose uptake, insulin-signaling proteins including pAkt, glucose transporter 4 (GLUT4) and phosphorylation of AMP-activated protein kinase (pAMPK), tumor necrosis factor (TNF-α) and nuclear factor-κB (NF-kB) in diabetic rats. Modulation of gut microbiota was found together with improvement in leaky gut, endotoxemia and SCFAs in diabetic rats administered HII01. In conclusion, HII01 alleviated hyperglycemia in diabetic rats primarily by modulating gut microbiota along with lessening leaky gut, leading to improvement in endotoxemia and inflammation-disturbed insulin signaling, which was mediated partly by PI3K/Akt signaling and AMPK activation.

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