Reduced Portal Insulin Linked to Immunometabolic Disruption in Patients With Chronic Hepatitis C Infection

New research reveals Hepatitis C reduces portal insulin, linking viral infection to immune-driven metabolic disruption and insulin resistance in the liver.

By: AXL Media

Published: Apr 28, 2026, 4:48 AM EDT

Source: Information for this report was sourced from EurekAlert!

The Hidden Hormonal Imbalance of Viral Hepatitis

Chronic Hepatitis C infection appears to fundamentally alter the delivery of insulin to the liver, a discovery that may explain the high prevalence of metabolic disorders among infected patients. New research indicates that while peripheral insulin levels often remain steady, the concentration of insulin within the portal vein is significantly depressed during active infection. This specific hormonal deficit suggests that the virus interferes with the critical gut-liver axis, potentially compromising the liver's ability to regulate glucose and systemic metabolism effectively.

Comparative Data Post Viral Eradication

To understand the impact of the virus on metabolic health, investigators analyzed patients before and after achieving a sustained virologic response through sofosbuvir and velpatasvir treatment. The data revealed that portal insulin levels were significantly lower in patients with active infection compared to those who had cleared the virus. Interestingly, while the portal insulin saw a marked decrease, researchers noted that peripheral insulin and glucose levels did not show the same immediate variations, masking the internal metabolic shift occurring within the hepatic environment.

The Interplay of Immunity and Insulin Dynamics

The study identified a distinct correlation between depressed portal insulin and the presence of proinflammatory cytokines and vascular injury markers. Hepatic transcriptomic analysis further supported these findings, showing that portal insulin levels were positively associated with immune pathways but negatively linked to amino acid pathways. These relationships suggest that the body's inflammatory response to the Hepatitis C virus directly influences insulin secretion and extraction, creating a complex web of immunometabolic perturbations.