Abstract:
AIM:To investigate anti-apoptotic effects of glycyrrhizic acid (GA) against fibrosis in carbon tetrachloride (CCl4)-induced liver injury and its contributing factors. METHODS:Liver fibrosis was induced by administration of CCl4 for 8 wk. Pathological changes in the liver of rats were examined by hematoxylin-eosin staining. Collagen fibers were detected by Sirius red staining. Hepatocyte apoptosis was determined by TUNEL assay and the expression levels of cleaved caspase-3, Bax, α-SMA, connective tissue growth factor (CTGF), matrix metalloproteinase (MMP) 2 and MMP9 proteins were evaluated by western blot analysis, and α-SMA mRNA, collagen type I and III mRNA were estimated by real-time PCR. RESULTS:Treatment with GA significantly improved the pathological changes in the liver and markedly decreased the positive area of Sirius red compared with rats in the CCl4-treated group. TUNEL assay showed that GA significantly reduced the number of TUNEL-positive cells compared with the CCl4-treated group. The expression levels of cleaved caspase-3, Bax, α-SMA, CTGF, MMP2 and MMP9 proteins, and α-SMA mRNA, collagen type I and III mRNA were also significantly reduced by GA compared with the CCl4-treated group (P < 0.05). CONCLUSION:GA treatment can ameliorate CCl4-induced liver fibrosis by inhibiting hepatocyte apoptosis and hepatic stellate cell activation.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Liang B,Guo XL,Jin J,Ma YC,Feng ZQdoi
10.3748/wjg.v21.i17.5271subject
Has Abstractpub_date
2015-05-07 00:00:00pages
5271-80issue
17eissn
1007-9327issn
2219-2840journal_volume
21pub_type
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