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[Genetic polymorphism of enzymes metabolizing xenobiotics as a factor in susceptibility to tumor development]
J Salagovic1, I Kalina, M Dudas
1Department of Medical Biology, Faculty of Medicine, Safarikiensis University, Kosice.
Abstract:
Organisms are exposed to a large number of xenobiotics (compounds foreign to the body), such as drugs, pesticides, natural food constituents and so on. To deal with these, usually lipophilic substances, a range of biotransformation enzyme systems are available. Experimental data have shown that metabolic activation and detoxification play an important role in chemical carcinogenesis. There is a considerable interindividual genetic variability in these pathways which might explain the differences in cancer susceptibility and might ultimately enable the identification of people at increased risk and to offer individualized cancer prevention. Recently, molecular genetic bases of many polymorphic enzyme activities involved in xenobiotics metabolism have been elucidated. The purpose of this article is to provide a brief review of recent findings concerning the association of genetically determined metabolic variants with different risks of environmentally induced cancer. (Tab. 6, Fig. 1, Ref. 30.)
Insights
Genetic variations in xenobiotic metabolism influence cancer risk. Understanding these metabolic pathways can help identify individuals susceptible to environmentally induced cancers for personalized prevention strategies.
Area of Science:
- Biochemistry and Molecular Biology
- Environmental Health
- Genetics
Context:
- Organisms encounter numerous xenobiotics (foreign compounds) like drugs and pesticides.
- Biotransformation enzyme systems detoxify or metabolize these lipophilic substances.
- Metabolic activation and detoxification are crucial in chemical carcinogenesis.
Purpose:
- To review recent findings on the link between genetically determined metabolic variants and environmentally induced cancer risk.
- To highlight the role of interindividual genetic variability in xenobiotic metabolism pathways.
- To explore the potential for individualized cancer prevention based on genetic predispositions.
Summary:
- Genetic variability in enzymes metabolizing xenobiotics significantly impacts cancer susceptibility.
- Elucidation of molecular genetic bases for polymorphic enzyme activities is advancing.
- Associations between specific metabolic variants and varying risks of environmentally induced cancers are being identified.
Impact:
- Facilitates identification of individuals at increased risk for environmentally induced cancers.
- Enables the development of personalized cancer prevention strategies.
- Advances understanding of gene-environment interactions in carcinogenesis.