Journal
WORLD JOURNAL OF HEPATOLOGY
Volume 7, Issue 11, Pages 1572-1580Publisher
BAISHIDENG PUBLISHING GROUP INC
DOI: 10.4254/wjh.v7.i11.1572
Keywords
Hepatitis B virus; Hepatocellular carcinoma; Inflammation; Th1/Th1 cytokine; Polymorphism
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Hepatocellular carcinoma (HCC), the predominant type of primary liver cancer, is one of the most serious life-threatening malignancies, worldwide. In majority of the cases, HCC develops after prolonged and persistent chronic liver disease. hepatitis B virus (HBV) or HCV infection is prominent etiological factors, attributing to this condition. It has been well documented that HBV, being the inducer of chronic inflammation, is the main causative agent in causing HCC, particularly in Asian countries. The HBV infection leads to a wide range of clinical symptoms from carrier state to malignancy. Cytokines being immune-modulatory molecules, are the key mediators in the defense mechanism against viral infection. In this regard, this review will detail the substantial role of key Th1: interleukin 1 (IL-1), IL-2, IL-12, tumor necrosis factor-alpha, interferon-gamma; Th2: IL-4, IL-10 and non Th1/Th2: IL-6, transforming growth factor-beta 1 cytokines genotypes in analyzing the variability in the clinical manifestations in an HBV-afflicted individual, which might finally, culminates into HCC. Since cytokine production is regulated genetically, the cytokine promoter region single-nucleotide polymorphisms induced changes, greatly affects the cytokine production, thus resulting into differential outcome of immune balance.
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