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Cognitive dysfunction in chronic hepatitis C: a review.

William Perry1, Robin C Hilsabeck, Tarek I Hassanein

  • 1Department of Psychiatry, Hepatology Neurobehavioral Research Program, UCSD Liver Center, University of California, 200 West Arbor Drive, San Diego, CA 92108-8707, USA.

Digestive Diseases and Sciences
|August 19, 2007
PubMed
Summary
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Hepatitis C virus (HCV) infection is linked to cognitive impairment, even without cirrhosis. This review explores HCV-related cognitive deficits, causes, and treatment impacts, including HIV co-infection.

Area of Science:

  • Hepatology
  • Neuroscience
  • Infectious Diseases

Background:

  • Hepatitis C virus (HCV) affects millions globally, with cognitive impairment a known complication in advanced liver disease.
  • Cognitive deficits in HCV patients were historically attributed to hepatic encephalopathy secondary to cirrhosis.
  • Emerging evidence indicates cognitive impairment occurs in one-third of chronic HCV patients irrespective of cirrhosis or liver function markers.

Purpose of the Study:

  • To review the evidence on cognitive deficits in Hepatitis C virus (HCV) infection.
  • To explore potential etiological factors contributing to HCV-associated cognitive impairment.
  • To discuss the impact of antiviral therapy and human immunodeficiency virus (HIV) co-infection on cognitive function in HCV patients.

Main Methods:

Related Experiment Videos

  • Literature review of studies examining cognitive function in Hepatitis C virus (HCV) patients.
  • Analysis of evidence on the relationship between HCV, cognitive impairment, and liver disease severity.
  • Examination of factors including viral load, genotype, and co-infection with HIV.

Main Results:

  • Cognitive impairment is prevalent in Hepatitis C virus (HCV) infected individuals, occurring even without cirrhosis.
  • The presence and severity of cognitive deficits are not consistently correlated with standard liver function tests, viral load, or genotype.
  • Human immunodeficiency virus (HIV) co-infection may influence cognitive outcomes in HCV patients.

Conclusions:

  • Cognitive impairment is a significant, independent manifestation of Hepatitis C virus (HCV) infection.
  • Further research is needed to elucidate the mechanisms underlying HCV-induced cognitive deficits and to optimize treatment strategies.
  • Understanding these cognitive effects is crucial for comprehensive patient care and management of Hepatitis C virus (HCV).