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Published on: May 22, 2015
Hepatitis C, systemic inflammation and oxidative stress: correlations with metabolic diseases
Vassilios A Sevastianos1, Theodoros A Voulgaris1, Spyros P Dourakis2
1Department of Internal Medicine and Liver Outpatient Clinic, "Evangelismos" General Hospital, Athens, Greece.
Insights
Chronic Hepatitis C infection triggers systemic inflammation and oxidative stress, contributing to metabolic disorders like insulin resistance, fatty liver, and atherosclerosis. Understanding these mechanisms is crucial for managing associated health risks.
Area of Science:
- Hepatology
- Immunology
- Metabolic Syndrome
Background:
- Chronic Hepatitis C infection is linked to systemic diseases including diabetes mellitus, hepatic steatosis, and atherosclerosis.
- Hepatitis C virus (HCV) infection induces a pro-inflammatory state, increasing cytokines like tumor necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6).
- Oxidative stress, exacerbated by HCV and altered trace metal homeostasis, further contributes to metabolic derangements.
Purpose of the Study:
- To analyze the mechanisms by which Hepatitis C virus infection leads to systemic inflammation and metabolic dysfunction.
- To elucidate the role of immunological imbalance and oxidative stress in the pathogenesis of insulin resistance, hepatic steatosis, and atherosclerosis in HCV patients.
- To highlight the significance of metabolic manifestations in chronic Hepatitis C infection.
Main Methods:
- Review of current literature on the immunological and metabolic pathways affected by Hepatitis C virus.
- Analysis of the interplay between pro-inflammatory cytokines, oxidative stress, and metabolic derangements in chronic HCV infection.
- Examination of the contribution of viral factors and host immune responses to disease progression.
Main Results:
- HCV infection promotes a systemic increase in pro-inflammatory markers (TNF-α, IL-6).
- Immunological imbalance and oxidative stress contribute to insulin resistance, hepatic steatosis, and atherosclerotic plaque formation.
- HCV directly and indirectly enhances oxidative stress through cytokine effects and trace metal dysregulation.
Conclusions:
- Metabolic complications are significant manifestations of chronic Hepatitis C infection.
- Understanding the pathophysiological mechanisms linking HCV to metabolic diseases is essential for comprehensive patient management.
- Targeting inflammation and oxidative stress may offer therapeutic strategies for managing HCV-associated metabolic disorders.
Abstract:
Introduction: Hepatitis C chronic infection has long been correlated with numerous systemic diseases, such as diabetes mellitus and hepatic steatosis. Recent studies have also revealed an association with atherosclerosis.Areas covered: An analysis is presented on the mechanisms through which the hepatitis C viral infection can lead to a systemic increase in pro-inflammatory markers, especially tumor necrosis factor-a and interleukin-6. The immunological imbalance created may, through different mechanisms, act on the metabolic pathways that contribute to the development of insulin resistance, the accumulation of lipids in the liver, and even the formation of atherosclerotic plaques. Moreover, an additional contributing factor to the above-mentioned metabolic derangements is the unopposed oxidative stress observed in chronic hepatitis C viral infection. The virus itself contributes to the formation of oxidative stress, through alterations in the trace metal homeostasis and its effect on pro-inflammatory cytokines, such as tumor necrosis factor-a.Expert opinion: The scope of this review is to emphasize the importance of the metabolic manifestations of hepatitis C viral infection and to elucidate the pathophysiological mechanisms behind their emergence.
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