Aims: Levo-tetrahydropalmatine (L-THP) is an active ingredient of W. T. Wang, which has many bioactive properties. Herein, we investigated the protective effects of L-THP on concanavalin A- (ConA-) induced hepatitis in mice and explored its possible mechanisms of these effects.
Main Methods: Balb/c mice were intravenously injected with 25 mg/kg ConA to generate a model of acute autoimmune hepatitis, and L-THP (20 or 40 mg/kg) was administered orally once daily for 5 d before the ConA injection. The liver enzyme levels, proinflammatory cytokine levels, and other marker protein levels were determined 2, 8, and 24 h after ConA injection.
Results: L-THP could decrease serum liver enzymes and pathological damage by reducing the release of inflammatory factors like IL-6 and TNF-. The results of Western Blot and PCR indicated that L-THP could ameliorate liver cell apoptosis and autophagy. L-THP could suppress T lymphocyte proliferation and the production of TNF- and IL-6 induced by ConA in a dose-dependent manner . Additionally, the protective functions of L-THP depended on downregulating TRAF6/JNK signaling. The present study indicated that L-THP attenuated acute liver injury in ConA-induced autoimmune hepatitis by inhibiting apoptosis and autophagy via the TRAF6/JNK pathway.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6304924 | PMC |
| http://dx.doi.org/10.1155/2018/4032484 | DOI Listing |
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