The iNOS-oxidative pathway may play an important role in TC, but moderately in PolyC and DC. DNA oxidation and protein nitration occur in the three subtypes. Based on the significant differences of NTYR levels, TC and PolyC appear as two distinct subtypes.
The effects of co-infection with hepatitis C virus (HCV) and GB virus C (GBV-C) on CD4 cell counts and plasma HIV-RNA levels has been investigated in HIV-infected patients treated with highly active antiretroviral therapy (HAART). Patients co-infected with HCV and GBV-C experienced a CD4 cell increase during 4 years of HAART, whereas the increase stopped after 2 years in the other groups.
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