Iron, the HFE gene, and hepatitis C

Christoph Eisenbach1, Sven G Gehrke, Wolfgang Stremmel

  • 1Department of Gastroenterology, Infectious Diseases and Intoxications, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany. Christoph_Eisenbach@med.uni-heidelberg.de

Clinics in Liver Disease
|October 7, 2004
PubMed

Insights

Intrahepatic iron overload in chronic hepatitis C patients, especially with HFE gene mutations, can worsen liver damage and fibrosis. These HFE mutations are significant factors in hepatitis C progression.

Area of Science:

  • Hepatology
  • Genetics
  • Internal Medicine

Background:

  • Intrahepatic iron overload is a common complication in chronic hepatitis C (HCV) infection.
  • Elevated iron levels can accelerate liver injury, fibrosis, and cirrhosis development.
  • Hereditary hemochromatosis, often linked to HFE gene mutations, is a primary condition associated with iron overload.

Purpose of the Study:

  • To investigate the association between HFE gene mutations and hepatic iron levels in chronic hepatitis C patients.
  • To determine if HFE mutations contribute to the severity of liver fibrosis in HCV infection.

Main Methods:

  • Analysis of hepatic iron scores in patients with chronic hepatitis C.
  • Genotyping for HFE gene mutations (homozygous and heterozygous).
  • Correlation of HFE mutation status with fibrosis stage and iron levels.

Main Results:

  • Patients with chronic hepatitis C and heterozygous HFE mutations exhibited higher hepatic iron scores compared to those without mutations.
  • The presence of heterozygous HFE mutations was associated with advanced stages of liver fibrosis in the chronic hepatitis C cohort.

Conclusions:

  • HFE gene mutations are significant comorbidity factors in chronic hepatitis C infection.
  • Identifying HFE mutations in HCV patients may help predict disease progression and severity.
  • Further research into the interplay between iron metabolism and HCV pathogenesis is warranted.

Related Concept Videos

Cell Specific Gene Expression01:58

Cell Specific Gene Expression

Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
Liver Regeneration01:24

Liver Regeneration

The liver is an important organ in vertebrates that plays an essential role in metabolism. It is also responsible for storing and redistributing nutrients such as carbohydrates, fats, and vitamins in the body. Additionally, the liver releases bile salts which are critical for digesting food and eliminating toxic metabolites from the body.
Cells of Liver
The liver comprises four major types of cells— hepatocytes, stellate, Kupffer, and sinusoidal endothelial cells. The hepatocytes are large...
Hepatitis01:25

Hepatitis

Hepatitis is an inflammatory condition of the liver most commonly caused by hepatotropic viruses (A–E), though non-infectious causes such as alcohol and drugs also exist.Hepatitis AHepatitis A virus (HAV) is a non-enveloped RNA virus of the Picornaviridae family. It is primarily transmitted via the fecal-oral route, typically through ingestion of contaminated food or water. After ingestion, HAV enters the bloodstream through the oropharynx or intestinal epithelium and reaches the liver. The...
Viral Hepatitis I: Introduction01:28

Viral Hepatitis I: Introduction

Viral hepatitis is an inflammatory condition of the liver caused by infection with hepatotropic viruses, most commonly hepatitis A, B, C, D, and E. Despite variations in structure and transmission, all viruses mentioned infect hepatocytes and provoke immune responses that can hinder liver function. Additionally, some non-hepatotropic viruses can also lead to hepatic inflammation.Hepatitis A VirusHepatitis A virus (HAV) is transmitted through the fecal–oral route, typically by ingestion of food...
Cirrhosis I: Introduction01:23

Cirrhosis I: Introduction

Cirrhosis is a chronic, irreversible liver disease characterized by the widespread replacement of healthy liver tissue with fibrotic scar tissue and the formation of regenerative nodules.Etiology of cirrhosisCirrhosis results from sustained liver injury that triggers progressive fibrosis and structural remodeling. The underlying causes are diverse, encompassing common and less frequent clinical conditions. Regardless of the origin, all causes lead to chronic inflammation, hepatocyte loss, and...
Jaundice01:25

Jaundice

Jaundice, or icterus, is the yellow discoloration of the skin, sclerae, and mucous membranes. It happens when plasma bilirubin levels rise above 2.5-3 mg/dL, leading to bilirubin deposition in tissue.Bilirubin is a byproduct of hemoglobin degradation. In macrophages, hemoglobin breaks down into globin and heme. Globin is converted into amino acids, while heme is turned into biliverdin by heme oxygenase, which is then reduced to unconjugated bilirubin by biliverdin reductase.Unconjugated...