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2017 ; 52
(11
): 1180-1191
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Effect of miglitol on the suppression of nonalcoholic steatohepatitis development
and improvement of the gut environment in a rodent model
#MMPMID28349245
Kishida Y
; Okubo H
; Ohno H
; Oki K
; Yoneda M
J Gastroenterol
2017[Nov]; 52
(11
): 1180-1191
PMID28349245
show ga
BACKGROUND: The gut environment has been considered to play a role in the
development of nonalcoholic steatohepatitis (NASH). ?-glucosidase inhibitors
(?-GIs) delay carbohydrate absorption and may change the gut environment. We
considered that the protective effect of ?-GIs against NASH development is
related to changes in the gut environment and thus investigated the effects of
miglitol, an ?-GI, on NASH development and the gut environment. METHODS: Mice
were divided into three groups and fed a normal chow diet (NCD), a high-fat
high-sucrose diet (HFHSD), or HFHSD plus 0.04% miglitol (HFHSD plus M) for
12 weeks. RESULTS: Insulin resistance developed more in the HFHSD group than in
the NCD group, whereas it was suppressed in the HFHSD plus M group. NASH was
evaluated histologically, biochemically, and on the basis of messenger RNA
expression levels. Miglitol treatment suppressed HFHSD-induced NASH development
with the suppression of hepatic Toll-like receptor 4 expression, increased
glucagon-like peptide 1 (GLP-1) concentration, and reduced lipopolysaccharide
concentration in portal plasma. Regarding the gut environment, the intestinal
transit time was shortened and colon inflammation was suppressed in the HFHSD
plus M group compared with the HFHSD group. Regarding the gut microbiota, the
abundances of Erysipelotrichaceae and Coriobacteriaceae were increased in the
HFHSD group compared with the NCD group, whereas the increase was suppressed in
the HFHSD plus M group. CONCLUSIONS: We demonstrated that miglitol has a
protective effect against HFHSD-induced NASH development. The increased GLP-1
secretion and the suppression of endotoxemia, associated with the changes in the
gut environment, including the gut microbiota, could contribute to the underlying
mechanisms.