Mechanism of Anti-chronic Alcoholic Liver Injury in Rats of Tibetan Medicine Lagotis brachystachys Extracts by TLR2/MyD88/NF-κB and NALP3 Signaling Pathway / 中国实验方剂学杂志
Chinese Journal of Experimental Traditional Medical Formulae
; (24): 80-85, 2020.
Article
ي Zh
| WPRIM
| ID: wpr-872794
المكتبة المسؤولة:
WPRO
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.
النص الكامل:
1
الفهرس:
WPRIM
نوع الدراسة:
Prognostic_studies
اللغة:
Zh
مجلة:
Chinese Journal of Experimental Traditional Medical Formulae
السنة:
2020
نوع:
Article