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  • Title: [A study of the association of iNOS and eNOS gene polymorphism with portal hypertension in liver cirrhosis].
    Author: Cheng YQ, Lin JS, Wang WQ, Xiong P, Jiang XD.
    Journal: Zhonghua Gan Zang Bing Za Zhi; 2005 May; 13(5):366-9. PubMed ID: 15918973.
    Abstract:
    OBJECTIVE: To study whether polymorphism of iNOS and eNOS genes is associated with portal hypertension in liver cirrhosis. METHODS: A case control study of 106 patients with liver cirrhosis due to HBV was performed in comparison with 108 controls using PCR-RFLP to detect iNOS promoter -969G --> C and eNOS exon7 894G --> T polymorphism. RESULTS: The frequency of the C allele and GC genotype in the iNOS promoter -969G --> C was significantly higher in the portal hypertension group than in the control group. (P < 0.05). The frequency of the T allele and GT genotype in eNOS exon7 894G --> T was dramatically higher in the portal hypertension group than in the control group (P < 0.05). Multivariate logistic regression analysis revealed that iNOS polymorphism in iNOS promoter -969G --> C and eNOS exon7 894G --> T was an independent new risk factor for portal hypertension. We discovered that iNOS promoter -969G --> C led to an increase in its functional activity. CONCLUSIONS: The polymorphism of iNOS promoter -969G --> C and eNOS exon7 894G --> T is associated with portal hypertension of liver cirrhosis, which is a new independent risk factor found related to the occurrence of portal hypertension. The polymorphism of iNOS promoter -969G --> C results in functional activity increase of the iNOS promoter.
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