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An In vitro Model to Study Immune Responses of Human Peripheral Blood Mononuclear Cells to Human Respiratory Syncytial Virus Infection
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Th1 and Th2 cytokines are elevated in HCV-infected SVR(-) patients treated with interferon-alpha

Lei Wan1, Yung-Jen Kung, Ying-Ju Lin

  • 1Department of Medical Genetics and Medical Research, China Medical University Hospital, No. 2 Yuh-Der Road, Taichung, Taiwan, ROC. leiwan@mail.cmuh.org.tw

Biochemical and Biophysical Research Communications
|January 3, 2009
PubMed

Interferon-alpha-based treatment is a standard therapy to cure hepatitis C virus-infected patients. However, the reasons for the failure of interferon-alpha treatment in some patients have not been fully elucidated. We evaluated the differences in the expression levels of various cytokines among patients with and without sustained viral response (SVR). We found that the chemokines (MIG and IP-10) and inflammation-related cytokines (IL-6) were transiently elevated in patients with SVR(+) before interferon-alpha treatment and in the early phase of treatment (week 2), indicating that these cytokines may be related to viral clearance. Furthermore, higher serum levels of Th1 and Th2 cytokines (IL-2, IL-4, IL-5, IL-10, tumor necrosis factor, and IFN-gamma) were observed in SVR(-) than in SVR(+) patients, indicating that they may be associated with ineffective anti-HCV immune response. Our data revealed that the patterns of cytokines varied greatly between SVR(+) and SVR(-) patients before and after IFN-alpha treatment.

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