Abstract | BACKGROUND & AIMS: METHODS: We studied clinical, histologic (liver biopsy samples for hepatocellular iron accumulation), serologic ( iron and enzyme levels), and genetic (HFE genotype) data from 587 patients from Italy with NAFLD and 184 control subjects. RESULTS:
Iron accumulation predominantly in hepatocyes was associated with a 1.7-fold higher risk of a fibrosis stage greater than 1 (95% confidence interval [CI]: 1.2-2.3), compared with the absence of siderosis (after adjustment for age, body mass index, glucose tolerance status, and alanine aminotransferase level). Nonparenchymal/mixed siderosis was not associated with moderate/severe fibrosis (odds ratio, 0.72; 95% CI: 0.50-1.01). Hepatocellular siderosis was more prevalent in patients with HFE mutations than in those without; approximately one third of patients with HFE mutations had parenchymal iron accumulation (range, 29.8%-35.7%, depending on HFE genotype). Predominantly hepatocellular iron accumulation occurred in 52.7% of cases of patients with HFE mutations. There was no significant association between either the presence of HFE mutations or specific HFE genotypes and the severity of liver fibrosis. CONCLUSIONS:
Iron deposition predominantly in hepatocyes is associated with more severe liver damage in patients with NAFLD. However, HFE mutations cannot be used to identify patients with hepatocellular iron accumulation.
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Authors | Luca Valenti, Anna Ludovica Fracanzani, Elisabetta Bugianesi, Paola Dongiovanni, Enrico Galmozzi, Ester Vanni, Elena Canavesi, Ezio Lattuada, Giancarlo Roviaro, Giulio Marchesini, Silvia Fargion |
Journal | Gastroenterology
(Gastroenterology)
Vol. 138
Issue 3
Pg. 905-12
(Mar 2010)
ISSN: 1528-0012 [Electronic] United States |
PMID | 19931264
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Copyright | Copyright 2010 AGA Institute. Published by Elsevier Inc. All rights reserved. |
Chemical References |
- HFE protein, human
- Hemochromatosis Protein
- Histocompatibility Antigens Class I
- Membrane Proteins
- Iron
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Topics |
- Adult
- Biopsy
- Case-Control Studies
- Disease Progression
- Fatty Liver
(etiology, genetics, metabolism, pathology)
- Female
- Gene Frequency
- Genetic Predisposition to Disease
- Hemochromatosis
(complications, genetics, metabolism, pathology)
- Hemochromatosis Protein
- Histocompatibility Antigens Class I
(genetics)
- Humans
- Iron
(metabolism)
- Italy
- Liver
(metabolism, pathology)
- Liver Cirrhosis
(etiology, genetics, metabolism, pathology)
- Logistic Models
- Male
- Membrane Proteins
(genetics)
- Middle Aged
- Mutation
- Odds Ratio
- Phenotype
- Risk Assessment
- Risk Factors
- Severity of Illness Index
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