Mechanism of Anti-chronic Alcoholic Liver Injury in Rats of Tibetan Medicine Lagotis brachystachys Extracts by TLR2/MyD88/NF-κB and NALP3 Signaling Pathway
10.13422/j.cnki.syfjx.20200237
- VernacularTitle:基于TLR2/MyD88/NF-κB和NALP3信号通路探讨藏族药短穗兔耳草提取物抗慢性酒精性肝损伤大鼠的作用机制
- Author:
Jia-ling SHAN
1
;
Rong-rui WEI
1
;
Lu WANG
1
;
Xiang OUYANG
1
;
Hong-yu CHENG
2
;
Guo-yue ZHONG
1
;
Jia-cheng LIU
3
;
Ji-xiao ZHU
1
Author Information
1. Research Center for Traditional Chinese Medicine(TCM) Resources and Ethnic Minority, Jiangxi University of TCM, Nanchang 330004, China
2. School of Humanities, Jiangxi University of TCM, Nanchang 330004, China
3. Jiangxi Cancer Hospital, Nanchang 330029, China
- Publication Type:Research Article
- Keywords:
Lagotis brachystachys;
Toll-like receptor(TLR)2/myeloid differentiation factor 88(MyD88)/nuclear factor kappa B (NF-κB)signaling pathway;
NOD like receptor protein 3(NALP3);
chronic alcoholic liver injury;
mechanism
- From:
Chinese Journal of Experimental Traditional Medical Formulae
2020;26(2):80-85
- CountryChina
- Language:Chinese
-
Abstract:
Objective::To established the model of chronic alcoholic liver injury in rats by long-term(8 weeks) alcoholic gavage, to study the effects of Tibetan medicine Lagotis brachystachys extracts on Toll-like receptor(TLR)2/myeloid differentiation factor 88(MyD88)/nuclear factor kappa B (NF-κB)and NOD like receptor protein 3(NALP3) signaling pathways and study preliminary the mechanism of action of chronic alcoholic liver injury. Method::Sixty male Sprague-Dawley rats were randomly divided into normal group, model group, bifendate positive drug group (0.1 g·kg-1) and L. brachystachys low, medium and high-dose groups (0.5, 1, 2 g·kg-1), the corresponding drugs were given at 10 mL·kg-1 in each morning, and the 56 degree Liquor was administered by the afternoon gradient alcoholic gavage method.After 8 weeks, the levels of serum aspartate transaminase (AST), serum alanineaminotransfease(ALT), serum total cholesterol(TC), triglyceride(TG), interleukin-1β(IL-1β), and the liver levels of L-glutathione(GSH)were measured. The expression of TLR2, MyD88, NF-κB and NALP3 protein in liver were detected by Western blot.Hematoxylin-eosin (HE) staining was used to observe the pathological changes of liver tissue. Result::Compared with normal group, the serum levels of AST, ALT, TC, TG and IL-1β in model group were significantly increased (P<0.05, P<0.01). Compared with model group, the serum AST, ALT, TC, TG and IL-1β levels were decreased in the various doses of L. brachystachys, and the high dose group was particularly effective (P<0.05, P<0.01). Compared with normal group, the GSH level in the liver homogenate of model group decreased significantly, and the difference was not statistically significant. The levels of TLR2, MyD88, NF-κB and NALP3 in the liver tissue of model group were significantly increased (P<0.05, P<0.01). The GSH levels in the liver and the protein expression of TLR2, MyD88, NF-κB and NALP3 were decreased in L. brachystachys group (P<0.05, P<0.01). The liver pathological section showed that L. brachystachys can improve the pathological changes of rat liver tissue. Conclusion::L. brachystachys can protect liver from alcohol-induced chronic liver injury in rats. The mechanism was related to TLR2/MyD88/NF-κB and NALP3 signaling pathway.
