Garlic essential oil protects against obesity-triggered nonalcoholic fatty liver disease through modulation of lipid metabolism and oxidative stress - PubMed (original) (raw)
. 2014 Jun 25;62(25):5897-906.
doi: 10.1021/jf500803c. Epub 2014 Jun 11.
Affiliations
- PMID: 24857364
- DOI: 10.1021/jf500803c
Garlic essential oil protects against obesity-triggered nonalcoholic fatty liver disease through modulation of lipid metabolism and oxidative stress
Yi-Syuan Lai et al. J Agric Food Chem. 2014.
Abstract
This study investigated the protective properties of garlic essential oil (GEO) and its major organosulfur component (diallyl disulfide, DADS) against the development of nonalcoholic fatty liver disease (NAFLD). C57BL/6J mice were fed a normal or high-fat diet (HFD) with/without GEO (25, 50, and 100 mg/kg) or DADS (10 and 20 mg/kg) for 12 weeks. GEO and DADS dose-dependently exerted antiobesity and antihyperlipidemic effects by reducing HFD-induced body weight gain, adipose tissue weight, and serum biochemical parameters. Administration of 50 and 100 mg/kg GEO and 20 mg/kg DADS significantly decreased the release of pro-inflammatory cytokines in liver, accompanied by elevated antioxidant capacity via inhibition of cytochrome P450 2E1 expression during NAFLD development. The anti-NAFLD effects of GEO and DADS were mediated through down-regulation of sterol regulatory element binding protein-1c, acetyl-CoA carboxylase, fatty acid synthase, and 3-hydroxy-3-methylglutaryl-coenzyme A reductase, as well as stimulation of peroxisome proliferator-activated receptor α and carnitine palmitoyltransferase-1. These results demonstrate that GEO and DADS dose-dependently protected obese mice with long-term HFD-induced NAFLD from lipid accumulation, inflammation, and oxidative damage by ameliorating lipid metabolic disorders and oxidative stress. The dose of 20 mg/kg DADS was equally as effective in preventing NAFLD as 50 mg/kg GEO containing the same amount of DADS, which demonstrates that DADS may be the main bioactive component in GEO.
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