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MxA expression as marker for assessing the therapeutic response in HCV genotype 4 Egyptian patients

MxA expression as marker for assessing the therapeutic response in HCV genotype 4 Egyptian patients Summary. The prevalence of hepatitis C virus (HCV) infection varies across the world, with the highest number of infections reported in Egypt. Expression of the MxA gene has been found to be a reliable and sensitive marker for the induction of endogenous type I interferons (IFNs) during viral infections. This study examined the correlation of gene expression of MxA with the response to treatment with pegylated‐IFN‐alfa2b and ribavirin. Fifty patients with type 4 HCV and 20 healthy volunteers as controls were enrolled in a prospective study designed with strict inclusion criteria to nullify the effect of confounding variables and further minimize selection bias. Quantification of HCV‐RNA and MxA gene by real‐time PCR was performed for every patient, and quantification of MxA gene was performed for controls. There was a statistically significant difference between patients and control group as regards the quantity of MxA gene expression (P < 0.05) (Mann–Whitney test) (P = 0.004). There was a statistically significant difference between responders and nonresponders (P < 0.05): responders showed a higher percentage of cases with initial MxA <26 (P < 0.05). We conclude that MxA protein expression is a sensitive biological marker for ongoing virus replication and presence of type 1 IFN. These results highlight the importance of the detection of MxA expression at the start of therapy as a factor for assessing the likelihood of HCV genotype 4 patients to achieving a sustained virological response to treatment with IFN‐α2 in combination with ribavirin. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Viral Hepatitis Wiley

MxA expression as marker for assessing the therapeutic response in HCV genotype 4 Egyptian patients

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References (38)

Publisher
Wiley
Copyright
© 2009 Blackwell Publishing Ltd
ISSN
1352-0504
eISSN
1365-2893
DOI
10.1111/j.1365-2893.2009.01241.x
pmid
20002306
Publisher site
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Abstract

Summary. The prevalence of hepatitis C virus (HCV) infection varies across the world, with the highest number of infections reported in Egypt. Expression of the MxA gene has been found to be a reliable and sensitive marker for the induction of endogenous type I interferons (IFNs) during viral infections. This study examined the correlation of gene expression of MxA with the response to treatment with pegylated‐IFN‐alfa2b and ribavirin. Fifty patients with type 4 HCV and 20 healthy volunteers as controls were enrolled in a prospective study designed with strict inclusion criteria to nullify the effect of confounding variables and further minimize selection bias. Quantification of HCV‐RNA and MxA gene by real‐time PCR was performed for every patient, and quantification of MxA gene was performed for controls. There was a statistically significant difference between patients and control group as regards the quantity of MxA gene expression (P < 0.05) (Mann–Whitney test) (P = 0.004). There was a statistically significant difference between responders and nonresponders (P < 0.05): responders showed a higher percentage of cases with initial MxA <26 (P < 0.05). We conclude that MxA protein expression is a sensitive biological marker for ongoing virus replication and presence of type 1 IFN. These results highlight the importance of the detection of MxA expression at the start of therapy as a factor for assessing the likelihood of HCV genotype 4 patients to achieving a sustained virological response to treatment with IFN‐α2 in combination with ribavirin.

Journal

Journal of Viral Hepatitis – Wiley

Published: Nov 1, 2010

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