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Clinical and Developmental Immunology
Volume 2012 (2012), Article ID 236148, 9 pages
Review Article

HCV-Related Nervous System Disorders

Section of Neuropathology, Department of Neurological, Neuropsychological, Morphological and Motor Sciences, University of Verona, Verona 37134, Italy

Received 23 April 2012; Accepted 26 June 2012

Academic Editor: Domenico Sansonno

Copyright © 2012 Salvatore Monaco et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Chronic infection with hepatitis C virus (HCV) is associated with a wide spectrum of extrahepatic manifestations, affecting different organ systems. Neurological complications occur in a large number of patients and range from peripheral neuropathy to cognitive impairment. Pathogenetic mechanisms responsible for nervous system dysfunction are mainly related to the upregulation of the host immune response with production of autoantibodies, immune complexes, and cryoglobulins. Alternative mechanisms include possible extrahepatic replication of HCV in neural tissues and the effects of circulating inflammatory cytokines and chemokines.