期刊
DIGESTIVE AND LIVER DISEASE
卷 41, 期 11, 页码 823-828出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.dld.2009.03.005
关键词
Genes; IL-6; Inflammation; Insulin resistance; Steatohepatitis; Steatosis
Background: Environmental and genetic factors play a role in the pathogenesis and natural history of non-alcoholic fatty liver disease (NAFLD). Methods: In 114 subjects with NAFLD we report the prevalence and correlation with clinical parameters of three polymorphisms: interleukin-6 (-174G/C), plasma cell differentiation antigen (K] 21 Q) and microsomal transfer protein (-493G/T). In 59 biopsied patients with NAFLD the polymorphisms were also related to histological features. Results: IL-6 -174C variant was more prevalent (p<0.01) in NAFLD compared to controls. In the NAFLD group, C carriers had higher HOMA-IR and fasting insulin than G carriers (p<0.05). The prevalence of IL-6/C variant was higher (83%) in biopsied than in not biopsied subjects (66%) (p<0.05). In biopsied subjects, C carriers had higher HOMA-IR and fasting insulin (p<0.05) compared than those with G allele. The prevalence of IL-6 -174G/C polymorphism was significantly higher in NASH than in NAFLD (p = 0.048). At logistic regression analysis IL-6 -174C was an independent predictor of both NAFLD (OR 4.116, C.I. 1.126-15.048) and NASH (OR 7.035, C.I. 1.167-42.394). Conversely, the distribution of PC-1 and MTP polymorphisms was not significantly different compared to the control group, nor associated with clinical or histological characteristics. Conclusions: Our data suggest that IL-6 -174C genetic polymorphisms, involved in inflammation and insulin resistance, are associated with NASH. These data may contribute to the understanding of the genetic susceptibility to NAFLD. (C) 2009 Editrice Gastroenterologica Italiana S.r.I. Published by Elsevier Ltd. All rights reserved.
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