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Depression: 21st Century Solutions + The Dark Side of Wheat

Abstract Title:

Effects of Eriobotrya japonica seed extract on oxidative stress in rats with non-alcoholic steatohepatitis.

Abstract Source:

J Pharm Pharmacol. 2010 Feb;62(2):241-6. PMID: 20487204

Abstract Author(s):

Saburo Yoshioka, Atsuhide Hamada, Kohei Jobu, Junko Yokota, Masahide Onogawa, Shojiro Kyotani, Mitsuhiko Miyamura, Toshiji Saibara, Saburo Onishi, Yutaka Nishioka

Article Affiliation:

Department of Pharmacy, Kochi Medical School, Nankoku, Kochi, Japan. jm-saburo@kochi-u.ac.jp

Abstract:

OBJECTIVES: Non-alcoholic steatohepatitis is associated with the deposition of lipid droplets in the liver, and is characterised histologically by the infiltration of inflammatory cells, hepatocellular degeneration and liver fibrosis. Oxidative stress may play an important role in the onset and deterioration of non-alcoholic steatohepatitis. We previously reported that an Eriobotrya japonica seed extract, extracted in 70% ethanol, exhibited antioxidant actions in vitro and in vivo. In this study, we examined the effect of this extract in a rat model of non-alcoholic steatohepatitis.

METHODS: The seed extract was given in the drinking water to fats being fed a methionine-choline-deficient diet for 15 weeks.

KEY FINDINGS: Increases in alanine aminotransferase and aspartate aminotransferase levels were significantly inhibited in rats fed the seed extract compared with the group on the diet alone. Formation of fatty droplets in the liver was also inhibited. Antioxidant enzyme activity in liver tissue was higher than in the diet-only group and lipid peroxidation was reduced compared with rats that also received the extract. Expression of 8-hydroxy-2'-deoxyguanosine and 4-hydroxy-2-nonenal was lower in the rats given the seed extract than in the diet-only group. In the former, liver tissue levels of transforming growth factor-beta and collagen were also decreased.

CONCLUSIONS: Thus, the E. japonica seed extract inhibited fatty liver, inflammation and fibrosis, suggesting its usefulness in the treatment of non-alcoholic steatohepatitis.

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Sayer Ji
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Depression: 21st Century Solutions + The Dark Side of Wheat

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