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Original scientific paper

https://doi.org/10.2478/10004-1254-59-2008-1907

Asbestosis and Catalase Genetic Polymorphism

Alenka Franko ; Clinical Institute of Occupational, Traffic and Sports Medicine, University Medical Centre, Ljubljana, Slovenia
Vita Dolžan ; Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
Niko Arnerić ; Clinical Institute of Occupational, Traffic and Sports Medicine, University Medical Centre, Ljubljana, Slovenia
Metoda Dodič-Fikfak ; Clinical Institute of Occupational, Traffic and Sports Medicine, University Medical Centre, Ljubljana, Slovenia


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Abstract

Catalase (CAT) is part of the enzymatic defense system against reactive oxygen species (ROS), known to be involved in the pathogenesis of asbestosis. This study investigates whether CAT -262 C>T genetic polymorphism influences the risk of asbestosis in workers occupationally exposed to asbestos.
The nested case-control study included 262 cases with asbestosis and 265 controls with no asbestosrelated disease. Data on cumulative asbestos exposure and smoking were available. A real-time PCR assay was introduced for genotyping CAT -262 C>T promoter polymorphism.
A slightly elevated risk of asbestosis was observed in subjects with the CAT -262 TT genotype compared to others (OR=1.36, CI 0.70-2.62). This risk did not change substantially after adjustment by sex, age, and smoking, but the involvement of cumulative asbestos exposure changed the OR to 1.91 (CI 0.93-3.91).
These findings indicate that the CAT -262 TT genotype may be slightly associated with an increased risk of asbestosis. No synergistic effect was found between cumulative asbestos exposure and the CAT -262 TT genotype, but cumulative asbestos exposure acted as a confounder. These results are an important contribution to understanding the interactions between genetic and environmental factors that may modify the risk of asbestosis.

Keywords

asbestos exposure, causal relationship, nested case control study, real-time PCR

Hrčak ID:

29524

URI

https://hrcak.srce.hr/29524

Article data in other languages: slovenian

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