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Abstract Title:

Blackcurrant (Ribes nigrum) Prevents Obesity-Induced Nonalcoholic Steatohepatitis in Mice.

Abstract Source:

Obesity (Silver Spring). 2019 Jan ;27(1):112-120. PMID: 30569636

Abstract Author(s):

Yoojin Lee, Tho X Pham, Minkyung Bae, Siqi Hu, Edward O'Neill, Ock K Chun, Myung Joo Han, Sung I Koo, Young-Ki Park, Ji-Young Lee

Article Affiliation:

Yoojin Lee

Abstract:

OBJECTIVE: With increasing prevalence of nonalcoholic steatohepatitis (NASH), effective strategies to prevent NASH are needed. This study investigated whether the consumption of blackcurrant (Ribes nigrum) can prevent the development of obesity-induced NASH in vivo.

METHODS: Male C57BL/6J mice were fed a low-fat control diet, a low-fat diet with 6% whole blackcurrant powder, an obesogenic high-fat/high-sucrose control diet (HF), or a high-fat/high-sucrose diet containing 6% whole blackcurrant powder (HF-B) for 24 weeks.

RESULTS: HF significantly increased, whereas HF-B markedly decreased, liver weights and triglyceride. Furthermore, blackcurrant attenuated obesity-induced infiltration of macrophages in the liver, in particular, the M1 type, and also suppressed the hepatic expression of fibrogenic genes and fibrosis. Flow cytometric analysis showed that HF significantly increased the percentages of monocytes of total splenocytes, which was markedly attenuated by blackcurrant. HF-B decreased lipopolysaccharide-stimulated mRNA expression of interleukin 1β and tumor necrosis factor α in splenocytes, compared with those from HF controls. Moreover, the levels of circulating and hepatic miR-122-5p and miR-192-5p, known markers for nonalcoholic fatty liver disease, were significantly increased by HF but decreased by HF-B.

CONCLUSIONS: The study's findings indicate that blackcurrant consumption prevents obesity-induced steatosis, inflammation, and fibrosis in the liver.

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