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Dihydromyricetin alleviates carbon tetrachloride-induced acute liver injury via JNK-dependent mechanism in mice.
World J Gastroenterol. 2015 May 14; 21(18):5473-81.WJ

Abstract

AIM

To assess the effects of dihydromyricetin (DHM) as a hepatoprotective candidate in reducing hepatic injury and accelerating hepatocyte proliferation after carbon tetrachloride (CCl4) treatment.

METHODS

C57 BL/6 mice were used in this study. Mice were orally administered with DHM (150 mg/kg) for 4 d after CCl4 treatment. Serum and liver tissue samples were collected on days 1, 2, 3, 5 and 7 after CCl4 treatment. The anti-inflammatory effect of DHM was assessed directly by hepatic histology detection and indirectly by serum levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), albumin, and superoxide dismutase (SOD). Inflammatory cytokines, such as interleukin (IL)-1β, IL-6 and tumor necrosis factor-α (TNF-α), were detected using ELISA kits. Proliferating cell nuclear antigen (PCNA) staining was used to evaluate the role of DHM in promoting hepatocyte proliferation. Hepatocyte apoptosis was measured by TUNEL assay. Furthermore, apoptosis proteins Caspases-3, 6, 8, and 9 were detected by Western blot. SP600125 were used to confirm whether DHM regulated liver regeneration through JNK/TNF-α pathways.

RESULTS

DHM showed a strong anti-inflammatory effect on CCl4-induced liver injury in mice. DHM could significantly decrease serum ALT, AST, IL-1β, IL-6 and TNF-α and increase serum albumin, SOD and liver SOD compared to the control group after CCl4 treatment (P < 0.05). PCNA results indicated that DHM could significantly increase the number of PCNA positive cells compared to the control (348.9 ± 56.0 vs 107.1 ± 31.4, P < 0.01). TUNEL assay showed that DHM dramatically reduced the number of apoptotic cells after CCl4 treatment compared to the control (365.4 ± 99.4 vs 90.5 ± 13.8, P < 0.01). Caspase activity detection showed that DHM could reduce the activities of Caspases- 8, 3, 6 and 9 compared to the control (P < 0.05). The results of Western blot showed that DHM increased the expression of JNK and decreased TNF-α expression. However, DHM could not affect TNF-α expression after SP600125 treatment. Furthermore, DHM could significantly improve the survival rate of acute liver failure (ALF) mice (73.3% vs 20.0%, P < 0.0001), and SP600125 could inhibit the effect of DHM.

CONCLUSION

These findings demonstrate that DHM alleviates CCl4-induced liver injury, suggesting that DHM is a promising candidate for reversing liver injury and ALF.

Authors+Show Affiliations

Jun Xie, Wei-Dong Zhang, Li-Ping Hu, Run-Zhi Zhu, Clinical Research Center, Xuyi People's Hospital, Xuyi 211700, Jiangsu Province, China.Jun Xie, Wei-Dong Zhang, Li-Ping Hu, Run-Zhi Zhu, Clinical Research Center, Xuyi People's Hospital, Xuyi 211700, Jiangsu Province, China.Jun Xie, Wei-Dong Zhang, Li-Ping Hu, Run-Zhi Zhu, Clinical Research Center, Xuyi People's Hospital, Xuyi 211700, Jiangsu Province, China.Jun Xie, Wei-Dong Zhang, Li-Ping Hu, Run-Zhi Zhu, Clinical Research Center, Xuyi People's Hospital, Xuyi 211700, Jiangsu Province, China.Jun Xie, Wei-Dong Zhang, Li-Ping Hu, Run-Zhi Zhu, Clinical Research Center, Xuyi People's Hospital, Xuyi 211700, Jiangsu Province, China.Jun Xie, Wei-Dong Zhang, Li-Ping Hu, Run-Zhi Zhu, Clinical Research Center, Xuyi People's Hospital, Xuyi 211700, Jiangsu Province, China.Jun Xie, Wei-Dong Zhang, Li-Ping Hu, Run-Zhi Zhu, Clinical Research Center, Xuyi People's Hospital, Xuyi 211700, Jiangsu Province, China.Jun Xie, Wei-Dong Zhang, Li-Ping Hu, Run-Zhi Zhu, Clinical Research Center, Xuyi People's Hospital, Xuyi 211700, Jiangsu Province, China.Jun Xie, Wei-Dong Zhang, Li-Ping Hu, Run-Zhi Zhu, Clinical Research Center, Xuyi People's Hospital, Xuyi 211700, Jiangsu Province, China.Jun Xie, Wei-Dong Zhang, Li-Ping Hu, Run-Zhi Zhu, Clinical Research Center, Xuyi People's Hospital, Xuyi 211700, Jiangsu Province, China.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

25987769

Citation

Xie, Jun, et al. "Dihydromyricetin Alleviates Carbon Tetrachloride-induced Acute Liver Injury Via JNK-dependent Mechanism in Mice." World Journal of Gastroenterology, vol. 21, no. 18, 2015, pp. 5473-81.
Xie J, Liu J, Chen TM, et al. Dihydromyricetin alleviates carbon tetrachloride-induced acute liver injury via JNK-dependent mechanism in mice. World J Gastroenterol. 2015;21(18):5473-81.
Xie, J., Liu, J., Chen, T. M., Lan, Q., Zhang, Q. Y., Liu, B., Dai, D., Zhang, W. D., Hu, L. P., & Zhu, R. Z. (2015). Dihydromyricetin alleviates carbon tetrachloride-induced acute liver injury via JNK-dependent mechanism in mice. World Journal of Gastroenterology, 21(18), 5473-81. https://doi.org/10.3748/wjg.v21.i18.5473
Xie J, et al. Dihydromyricetin Alleviates Carbon Tetrachloride-induced Acute Liver Injury Via JNK-dependent Mechanism in Mice. World J Gastroenterol. 2015 May 14;21(18):5473-81. PubMed PMID: 25987769.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dihydromyricetin alleviates carbon tetrachloride-induced acute liver injury via JNK-dependent mechanism in mice. AU - Xie,Jun, AU - Liu,Jie, AU - Chen,Tu-Ming, AU - Lan,Qing, AU - Zhang,Qing-Yu, AU - Liu,Bin, AU - Dai,Dong, AU - Zhang,Wei-Dong, AU - Hu,Li-Ping, AU - Zhu,Run-Zhi, PY - 2014/11/07/received PY - 2014/12/31/revised PY - 2015/02/12/accepted PY - 2015/5/20/entrez PY - 2015/5/20/pubmed PY - 2016/4/12/medline KW - Dihydromyricetin KW - Liver regeneration KW - Tumor necrosis factor-α SP - 5473 EP - 81 JF - World journal of gastroenterology JO - World J. Gastroenterol. VL - 21 IS - 18 N2 - AIM: To assess the effects of dihydromyricetin (DHM) as a hepatoprotective candidate in reducing hepatic injury and accelerating hepatocyte proliferation after carbon tetrachloride (CCl4) treatment. METHODS: C57 BL/6 mice were used in this study. Mice were orally administered with DHM (150 mg/kg) for 4 d after CCl4 treatment. Serum and liver tissue samples were collected on days 1, 2, 3, 5 and 7 after CCl4 treatment. The anti-inflammatory effect of DHM was assessed directly by hepatic histology detection and indirectly by serum levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), albumin, and superoxide dismutase (SOD). Inflammatory cytokines, such as interleukin (IL)-1β, IL-6 and tumor necrosis factor-α (TNF-α), were detected using ELISA kits. Proliferating cell nuclear antigen (PCNA) staining was used to evaluate the role of DHM in promoting hepatocyte proliferation. Hepatocyte apoptosis was measured by TUNEL assay. Furthermore, apoptosis proteins Caspases-3, 6, 8, and 9 were detected by Western blot. SP600125 were used to confirm whether DHM regulated liver regeneration through JNK/TNF-α pathways. RESULTS: DHM showed a strong anti-inflammatory effect on CCl4-induced liver injury in mice. DHM could significantly decrease serum ALT, AST, IL-1β, IL-6 and TNF-α and increase serum albumin, SOD and liver SOD compared to the control group after CCl4 treatment (P < 0.05). PCNA results indicated that DHM could significantly increase the number of PCNA positive cells compared to the control (348.9 ± 56.0 vs 107.1 ± 31.4, P < 0.01). TUNEL assay showed that DHM dramatically reduced the number of apoptotic cells after CCl4 treatment compared to the control (365.4 ± 99.4 vs 90.5 ± 13.8, P < 0.01). Caspase activity detection showed that DHM could reduce the activities of Caspases- 8, 3, 6 and 9 compared to the control (P < 0.05). The results of Western blot showed that DHM increased the expression of JNK and decreased TNF-α expression. However, DHM could not affect TNF-α expression after SP600125 treatment. Furthermore, DHM could significantly improve the survival rate of acute liver failure (ALF) mice (73.3% vs 20.0%, P < 0.0001), and SP600125 could inhibit the effect of DHM. CONCLUSION: These findings demonstrate that DHM alleviates CCl4-induced liver injury, suggesting that DHM is a promising candidate for reversing liver injury and ALF. SN - 2219-2840 UR - https://www.unboundmedicine.com/medline/citation/25987769/Dihydromyricetin_alleviates_carbon_tetrachloride_induced_acute_liver_injury_via_JNK_dependent_mechanism_in_mice_ L2 - http://www.wjgnet.com/1007-9327/full/v21/i18/5473.htm DB - PRIME DP - Unbound Medicine ER -