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Telomere Length, Aggregates, and Capture in Cirrhosis
Ido Laish1,2, Amir Mari3, Batya Mannasse4
1Gastroenterology and Hepatology Institute, Meir Medical Center, Kfar Saba, Israel.
The Israel Medical Association Journal : IMAJ
|May 16, 2018
Summary
Telomere shortening is a general marker for liver cirrhosis across different causes. However, telomere aggregates, indicating genetic instability, were more prominent in hepatitis B/C cirrhosis, suggesting higher malignant potential.
Area of Science:
- Hepatology and Molecular Biology
- Genetics and Genomics
Background:
- Cirrhosis is associated with shortened telomeres, likely due to chronic liver injury and regeneration.
- Telomere shortening may serve as a general indicator of liver cirrhosis, irrespective of its cause.
Purpose of the Study:
- To determine if telomere shortening is a universal marker for cirrhosis.
- To compare telomere length and telomere aggregates in cryptogenic cirrhosis versus cirrhosis caused by chronic hepatitis B and C (HBV/HCV).
Main Methods:
- Quantitative fluorescence in situ hybridization was used to analyze telomere length and aggregates in peripheral lymphocytes.
- Study included 25 patients with cryptogenic cirrhosis, 15 with HBV/HCV cirrhosis, and 20 age-matched controls.
Main Results:
- Patients with cirrhosis, regardless of etiology, exhibited significantly shorter telomeres compared to controls.
- Increased telomere aggregate fusion (>5 telomeres) was observed in HBV/HCV cirrhosis but not in cryptogenic cirrhosis.
Conclusions:
- Shortened telomeres in lymphocytes are a general marker for liver cirrhosis.
- Telomere aggregates may indicate greater genetic instability and potential for malignant transformation in HBV/HCV-related cirrhosis compared to cryptogenic cirrhosis.
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