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자료유형
학술저널
저자정보
저널정보
거트앤리버 발행위원회 Gut and Liver Gut and Liver 제7권 제2호
발행연도
2013.1
수록면
213 - 220 (8page)

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Background/Aims: We aimed to investigate the correlation between a disintegrin and metalloprotease with thrombospondin motif 2 (ADAMTS-2) and transforming growth factor-β1 (TGF-β1) in clinical human cirrhotic tissues. Methods:The liver tissues of 24 patients (16 cases with cirrhotic portal hypertension as the cirrhosis group and eight cases with healthy livers as the normal group) were collected. Immunohistochemistry and Western blots were performed to evaluate the protein expression levels of ADAMTS-2 and TGF-β1. Western blots for other key mediators of cirrhotic progression, including SMAD2, SMAD3, TGF-β receptor II (TGFβRII), matrix metalloproteinases 2 (MMP2), and tissue inhibitor of matrix metalloproteinases 2 (TIMP2), were also performed. Results: Cirrhotic tissues showed higher percentages of collagen. The protein expression levels of ADAMTS-2and TGF-β1 were significantly higher in the cirrhotic group as compared to the matched normal group (p<0.05), and there was a positive correlation between these two proteins (r=0.862, p<0.01). The protein expressions of MMP2, TIMP2,and TGFβRII, as well as the phosphorylated forms of SMAD2and SMAD3, were significant higher in the cirrhotic group (p<0.01 or p<0.05). Conclusions: These findings suggested that ADAMTS-2 and TGF-β1 may play important roles in the pathogenesis of human cirrhosis; specifically, TGF-β1 may induce the expression of ADAMTS-2 through the TGFβ/SMAD pathway.

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