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Measurement of Tissue Non-Heme Iron Content using a Bathophenanthroline-Based Colorimetric Assay
Published on: January 31, 2022
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Polymorphisms Related to Iron Homeostasis Associate with Liver Disease in Chronic Hepatitis C
Anna Wróblewska1, Anna Woziwodzka1, Magda Rybicka1
1Laboratory of Photobiology and Molecular Diagnostics, Intercollegiate Faculty of Biotechnology University of Gdansk and Medical University of Gdansk, 80-307 Gdansk, Poland.
Viruses
|August 26, 2023
Summary
Genetic variants in iron metabolism genes are linked to liver disease progression in chronic hepatitis C (CHC). Specific gene variants correlate with hepatocellular carcinoma (HCC) risk and immune responses.
Area of Science:
- Hepatology and Gastroenterology
- Genetics and Genomics
- Immunology
Background:
- Iron metabolism dysregulation is a key factor in chronic hepatitis C (CHC) progression to cirrhosis and cancer.
- Genetic predispositions may influence individual susceptibility to liver disease advancement in CHC patients.
Purpose of the Study:
- To investigate the association between genetic variants in iron homeostasis genes and liver disease progression in CHC.
- To explore the correlation of these genetic variants with histopathological changes and hepatocellular carcinoma (HCC) development.
Main Methods:
- Retrospective analysis of 249 CHC patients undergoing antiviral therapy.
- Genotyping of nine single nucleotide polymorphisms (SNPs) in iron-related genes (HFE, TFR2, HDAC2, HDAC3, HDAC5, TMPRSS6, CYBRD1).
- Gene expression analysis (qRT-PCR) of iron-related genes and co-inhibitory receptors (PD-1, Tim3, CTLA4) in liver biopsies and samples.
Main Results:
- Four SNPs (CYBRD1 rs884409, HDAC5 rs368328, TFR2 rs7385804, TMPRSS6 rs855791) associated with baseline liver histopathology.
- A combination of HDAC3 rs976552 and CYBRD1 rs884409 minor alleles correlated with increased HCC prevalence (OR 8.1, p=0.001).
- HDAC3 rs976552 minor allele linked to reduced hepatic CTLA4 expression, suggesting immune modulation.
Conclusions:
- Genetic polymorphisms in iron homeostasis genes are associated with liver histopathological changes in CHC.
- Specific genetic variants (HDAC3 rs976552 and CYBRD1 rs884409) are significant predictors of HCC development, particularly in patients with elevated AST.
- The HDAC3 rs976552 variant may influence immunological pathways involved in CHC carcinogenesis.
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