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01.02.2013 | Original Contribution | Ausgabe 1/2013 Open Access

European Journal of Nutrition 1/2013

Garlic-derived S-allylmercaptocysteine is a hepato-protective agent in non-alcoholic fatty liver disease in vivo animal model

Zeitschrift:
European Journal of Nutrition > Ausgabe 1/2013
Autoren:
Jia Xiao, Yick Pang Ching, Emily C. Liong, Amin A. Nanji, Man Lung Fung, George L. Tipoe
Wichtige Hinweise

Electronic supplementary material

The online version of this article (doi:10.​1007/​s00394-012-0301-0) contains supplementary material, which is available to authorized users.
Jia Xiao and Yick Pang Ching These authors contributed equally.

Abstract

Purpose

To investigate the hepato-protective properties and underlying mechanisms of SAMC in a non-alcoholic fatty liver disease (NAFLD) rat model.

Methods

Female rats were fed with a diet comprising highly unsaturated fat diet (30% fish oil) for 8 weeks to develop NAFLD with or without an intraperitoneal injection of 200 mg/kg SAMC three times per week. After euthanasia, blood and liver samples of rats were collected for histological and biochemical analyses.

Results

Co-treatment of SAMC attenuated NAFLD-induced liver injury, fat accumulation, collagen formation and free fatty acids (FFAs). At the molecular level, SAMC decreased the lipogenesis marker and restored the lipolysis marker. SAMC also reduced the expression levels of pro-fibrogenic factors and diminished liver oxidative stress partly through the inhibition in the activity of cytochrome P450 2E1-dependent pathway. NAFLD-induced inflammation was also partially mitigated by SAMC treatment via reduction in the pro-inflammatory mediators, chemokines and suppressor of cytokine signaling. The protective effect of SAMC is also shown partly through the restoration of altered phosphorylation status of FFAs-dependent MAP kinase pathways and diminished in the nuclear transcription factors (NF-κB and AP-1) activity during NAFLD development.

Conclusions

SAMC is a novel hepato-protective agent against NAFLD caused by abnormal liver functions. Garlic or garlic derivatives could be considered as a potent food supplement in the prevention of fatty liver disease.

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