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Hepatitis C virus (HCV) determines an acute hepatitis evolving to persistent infection in 50–80% of patients.1 Different mechanisms have been proposed to explain disease evolution, including viral escape, failure of the T helper immune network, and host genetic factors.2 Among CD4+ T cell subsets, lymphocytes expressing constitutively CD25 (interleukin 2 receptor alpha chain), namely T regulatory cells (Treg), appear to play a critical role in controlling chronic evolution of HCV mediated liver diseases.3 Here we investigate the frequency and functional activity of CD3+/CD4+/CD25+ Tregs in acute HCV infection in relation to its evolution over time.
The study was approved by the local ethics committee and included 16 consecutive patients with acute hepatitis C (AHC), 15 consecutive patients with acute hepatitis A (AHA), and …
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