These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Role of transforming growth factor-beta signaling pathway in pathogenesis of benign biliary stricture.
    Author: Geng ZM, Zheng JB, Zhang XX, Tao J, Wang L.
    Journal: World J Gastroenterol; 2008 Aug 21; 14(31):4949-54. PubMed ID: 18756605.
    Abstract:
    AIM: To characterize the expression of members of the transforming growth factor-beta (TGF-beta)/Smad/connective tissue growth factor (CTGF) signaling pathway in the tissue of benign biliary stricture, and to investigate the effect of TGF-beta signaling pathway in the pathogenesis of benign biliary stricture. METHODS: Paraffin embedded materials from 23 cases of benign biliary stricture were analyzed for members of the TGF-beta/Smad/CTGF signaling pathway. TGF-beta (1), TbetaR I , TbetaR II , Smad4, Smad7 and CTGF protein were detected by immunohistochemical strepto-advidinbiotin complex method, and CTGF mRNA was evaluated by hybridization in situ, while 6 cases of normal bile duct served as controls. The percentages of positive cells were counted. The correlation between TGF-beta (1), Smad4 and CTGF was analyzed. RESULTS: The positive expression ratios of TGF-beta (1), TbetaR I , TbetaR II , Smad4, CTGF and CTGF mRNA in 23 cases with benign biliary stricture were 91.3%, 82.6%, 87.0%, 78.3%, 82.6% and 65.2%, respectively, significantly higher than that in 6 cases of normal bile duct respectively (vs 33.3%, 16.7%, 50.0%, 33.3%, 50.0%, 16.7%, respectively, P < 0.05). The positive expression ratio of Smad7 in cases with benign biliary stricture was 70.0%, higher than that in normal bile duct, but this difference is not statistically significant 70.0% vs 50%, P > 0.05). There was a positive correlation between positive expression of TGF-beta (1), Smad4 and CTGF in cases with benign biliary stricture. CONCLUSION: The high expression of TGF-beta/Smad/CTGF signaling pathway plays an important role in the pathogenesis of benign biliary stricture.
    [Abstract] [Full Text] [Related] [New Search]