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Hepatitis C and the leptin system: bound leptin levels are elevated in patients with hepatitis C and decrease during

A Widjaja1, H Wedemeyer, H L Tillmann

  • 1Dept. of Gastroenterology and Hepatology, Hannover Medical School, Germany.

Scandinavian Journal of Gastroenterology
|May 5, 2001
PubMed
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Antiviral therapy for hepatitis C reduced bound leptin levels, suggesting interferon

Area of Science:

  • Hepatology
  • Endocrinology
  • Virology

Background:

  • Elevated serum leptin is observed in alcoholic liver cirrhosis, potentially linking it to anorexia and hypermetabolism.
  • The leptin system's role in hepatitis C and its modulation by antiviral therapy remain unclear.

Purpose of the Study:

  • To investigate alterations in leptin components (free and bound leptin) in hepatitis C patients.
  • To assess the impact of interferon alpha and ribavirin therapy on these leptin components.

Main Methods:

  • A cohort of 25 chronic hepatitis C patients was compared to 25 matched controls.
  • Patients received interferon alpha alone or with ribavirin for 6-12 months.
  • Radioimmunoassays measured free and bound leptin before, during, and after therapy.

Related Experiment Videos

Main Results:

  • Free leptin levels were higher in females than males across groups.
  • Bound leptin levels were elevated in both male and female hepatitis C patients compared to controls.
  • Bound leptin decreased during therapy and returned to baseline post-therapy; this decrease was seen in responders.

Conclusions:

  • The observed decrease in bound leptin during antiviral therapy may indicate a direct interferon effect or changes in other leptin-regulating factors.
  • No correlation was found between leptin components and viral load, ALT, or inflammatory markers.