Protective effects of N-acetyl-L-cysteine against binge drinking-induced fatty liver in mice
10.3760/cma.j.issn.1001-9391.2018.03.003
- VernacularTitle: N-乙酰-L-半胱氨酸对小鼠急性酒精性脂肪肝的保护作用
- Author:
Mo XIAO
1
;
Rui YANG
;
Minjie GUAN
;
Ning ZHAO
;
Keqin XIE
;
Tao ZENG
Author Information
1. Institute of Toxicology, School of Public Health, Shandong University, Jinan 250012, China
- Publication Type:Journal Article
- Keywords:
N-acetyl-L-cysteine;
Alcoholic fatty liver;
PPAR-α
;
SREBP-1c;
HSL
- From:
Chinese Journal of Industrial Hygiene and Occupational Diseases
2018;36(3):169-173
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the roles of N-acetyl-L-cysteine (NAC) against binge drinking-induced fatty liver in mice.
Methods:SPF male C57BL/6 mice were randomly divided into 3 groups, i.e. control group, model group, and NAC/ethanol group (n=10). Mice in model and NAC/ethanol groups were exposed to 3 doses of ethanol (6 g/kg bw) to induced fatty liver, while mice in control group received equal volume and equal energy of maltodextrin solution. NAC was administered to mice at 1 h before ethanol exposure (100 mg/kg bw, i.p.). The mice were sacrificed at 6 h after the last ethanol exposure. The liver and epididymal adipose tissues were collected. Histopathological examination and biochemical assay kit were used to evaluate the fat accumulation, while Western-blot was performed to detect the protein levels of some key factors involved in fat metabolism in liver and adipose tissues.
Results:Compored with control group mice, the liver index and liver weight were significantly increased compared with model group, the liver index and TG level in NAC/ethanol group mice were all significantly decreased (P<0.05). Histological examination showed NAC effectively suppressed binge drinking-induced fat accumulation in mice liver. In addition, NAC had no significant effects on the protein levels of peroxisome proliferator-activated receptor-α (PPAR-α), Acy-CoA oxidase (ACOX), sterol regulatory element binding protein 1 c (SREBP-1c) and fatty acid synthase (FAS). Furthermore, the protein levels of hormone sensitive lipase (HSL) did not significantly differ among 3 groups, whereas NAC prevented binge drinking-induced increase of HSL phosphorylation at ser563 and ser660.
Conclusion:NAC could effectively attenuate binge drinking-induced fatty liver, which might be associated with the inhibition of lipid mobilization by suppressing the phosphorylation of HSL.
