[Show abstract][Hide abstract] ABSTRACT: Type I interferons (IFNs) play a pivotal role not only in antiviral immunity but also in the surveillance of cancer development. In order to quantify the critical function of type I IFNs in the suppression of human cancer development, IFN-alpha production in response to Sendai virus stimulation has been compared between healthy control subjects and hepatitis C virus (HCV)-infected patients, the latter being an ideal population for longterm monitoring of cancer development. Data for IFN-alpha production were obtained retrospectively over a 17-year period by examining medical records in a study population of 2315 individuals, of which 112 healthy controls and 20 HCV-infected patients were selected. Sixty percent of the HCV-infected patients had impaired or declining IFN-alpha production, in comparison to 17% in the healthy control group. Mean IFN-alpha levels were lower in patients who developed hepatocellular carcinoma than in the HCV-infected patients who remained cancer free. Our findings suggest that impairment of IFN-alpha production may be linked to an increased cancer risk and that dysfunction of the IFN system is associated with some types of cancer. Therefore, periodic assessment and quantification of IFN-alpha production can be a potential test for the early detection of cancer in humans.
Journal of Interferon & Cytokine Research 01/2008; 27(12):1013-7. DOI:10.1089/jir.2007.0047 · 2.00 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: To determine the utility of interferon (IFN)-alpha production capacity in patients with hepatitis C virus (HCV) infection for the measurement of immuno-surveillance potential and for the early detection of hepatocellular carcinoma (HCC) by investigating the Sendai virus (HVJ) stimulated IFN-alpha production capacity of patients with HCV infection.
HVJ stimulated IFN-alpha production was determined in a large number of patients with HCV infection and the development of HCC was monitored for 3 years in patients with liver cirrhosis (LC).
IFN-alpha production capacity decreases gradually with the progression of liver disease from chronic hepatitis (CH) to HCC. A significant correlation between the duration of HCV infection and impaired IFN-alpha production capacity was observed. IFN-alpha production in patients who developed HCC within 3 years was significantly lower than that of patients who remained in LC without developing HCC.
Measurement of IFN-alpha production in LC patients may be useful for the early detection of HCC.
World Journal of Gastroenterology 01/2006; 11(46):7330-4. · 2.37 Impact Factor