Beneficial Effects of Vitamin D Treatment in an Obese Mouse Model of Non-Alcoholic Steatohepatitis

Autor(en)

Daniel Jahn, Donata Dorbath, Stefan Kircher, Anika Nier, Ina Bergheim, Kaatje Lenaerts, Heike M. Hermanns, Andreas Geier

Abstrakt

Serum vitamin D levels negatively correlate with obesity and associated disorders such as non-alcoholic steatohepatitis (NASH). However, the mechanisms linking low vitamin D (VD) status to disease progression are not completely understood. In this study, we analyzed the effect of VD treatment on NASH in mice. C57BL6/J mice were fed a high-fat/high-sugar diet (HFSD) containing low amounts of VD for 16 weeks to induce obesity, NASH and liver fibrosis. The effects of preventive and interventional VD treatment were studied on the level of liver histology and hepatic/intestinal gene expression. Interestingly, preventive and to a lesser extent also interventional VD treatment resulted in improvements of liver histology. This included a significant decrease of steatosis, a trend towards lower non-alcoholic fatty liver disease (NAFLD) activity score and a slight non-significant decrease of fibrosis in the preventive treatment group. In line with these changes, preventive VD treatment reduced the hepatic expression of lipogenic, inflammatory and pro-fibrotic genes. Notably, these beneficial effects occurred in conjunction with a reduction of intestinal inflammation. Together, our observations suggest that timely initiation of VD supplementation (preventive vs. interventional) is a critical determinant of treatment outcome in NASH. In the applied animal model, the improvements of liver histology occurred in conjunction with reduced inflammation in the gut, suggesting a potential relevance of vitamin D as a therapeutic agent acting on the gut-liver axis.

Organisation(en)

Department für Ernährungswissenschaften

Externe Organisation(en)

Universitätsklinikum Würzburg, Julius-Maximilians-Universität Würzburg, Maastricht University (UM), Universitätsspital Zürich

Journal

Nutrients

Band

11

Anzahl der Seiten

14

ISSN

2072-6643

DOI

https://doi.org/10.3390/nu11010077

Publikationsdatum

01-2019

Peer-reviewed

Ja

ÖFOS 2012

303009 Ernährungswissenschaften

Schlagwörter

ASJC Scopus Sachgebiete

Food Science, Nutrition and Dietetics

Link zum Portal

https://ucris.univie.ac.at/portal/de/publications/beneficial-effects-of-vitamin-d-treatment-in-an-obese-mouse-model-of-nonalcoholic-steatohepatitis(bfbf9b0d-e0df-4e01-a20f-fd0b70201338).html