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Pharmacogenomics: a tool to prevent and cure coronary heart disease
Giuseppina Candore1, Carmela Rita Balistreri, Marco Caruso
1Dipartimento di Biopatologia e Metodologie, Malattie Cardiovascolari e Nefrourologiche, Università di Palermo, Italy. gcandore@unipa.it
Insights
Genetic variations in inflammatory genes like IL-6 and TLR4 are linked to coronary heart disease (CHD) and myocardial infarction (MI) risk. Screening these gene polymorphisms can improve risk assessment and identify potential therapeutic targets.
Area of Science:
- Cardiovascular Genetics
- Molecular Medicine
- Immunology
Background:
- Coronary heart disease (CHD) and myocardial infarction (MI) pathogenesis involve inflammation and genetic factors.
- Epidemiological studies highlight associations between CHD and polymorphisms in inflammatory molecules.
- Current therapeutic strategies for CHD/MI remain limited, and pharmacogenomic approaches are underexplored.
Purpose of the Study:
- To identify key inflammatory genes and their polymorphisms associated with CHD and MI risk.
- To evaluate the utility of screening specific gene polymorphisms for CHD/MI risk assessment.
- To explore the potential of genetic profiling in identifying susceptible individuals and novel drug targets.
Main Methods:
- Literature review focusing on inflammatory genes and their association with CHD/MI.
- Identification of candidate genes including pro- and anti-inflammatory cytokines, Toll-like receptor 4 (TLR4), CD14, CCR5, cyclooxygenases (COXs), and lipoxygenases (LOXs).
- Analysis of the complexity of gene-disease associations, considering factors like pleiotropy, age, lethality, and gene-environment interactions.
Main Results:
- Several inflammatory genes, such as interleukin (IL)-6, IL-10, TLR4, CCR5, COX, and LOX, are implicated in CHD and MI risk.
- Screening for polymorphisms in these genes shows potential as a valuable tool for CHD and MI risk assessment.
- The interplay of genetic polymorphisms with other factors complicates but underscores the importance of genetic assessment.
Conclusions:
- Genetic polymorphisms in key inflammatory pathways significantly contribute to CHD and MI risk.
- Screening for specific gene polymorphisms (IL-6, IL-10, TLR4, CCR5, COX, LOX) can enhance cardiovascular risk assessment.
- Understanding genetic influences can lead to early identification of at-risk individuals and inform the development of targeted therapies and lifestyle modifications.
Abstract:
Inflammation and genetics play an important role in the pathogenesis of coronary heart disease (CHD). This is supported by epidemiological studies which have thoroughly investigated the association between CHD and gene polymorphisms of the inflammatory molecules. Moreover, efforts to find elective therapy have not been rewarding and, despite the increasing appreciation of the role of genetics in CHD and myocardial infarction (MI) pathogenesis, pharmacogenomic approaches to uncover drug target have not been extensively explored. A critical search of published literature has suggested few inflammatory genes directly involved in the risk to develop CHD and MI. The selected genes are, the pro- and anti-inflammatory cytokines, Toll-like receptor 4 (TLR4), CD14, CCR5, cyclooxygenases (COXs) and lipoxygenases (LOXs). The associations between candidate gene polymorphisms and CHD/MI are difficult and complex as a consequence of pleiotropy, variations with age, selection due to the lethality of the disease, and interactions with other genes and environmental factors. However, current data indicate that screening for interleukin (IL)-6, IL-10, TLR4, CCR5, COX and LOX polymorphisms are likely to be a useful tool for CHD and MI risk assessment. What we believe is that dissecting out the influence of genetics polymorphism within the complex pathophysiology of CHD and MI will help to provide a more complete risk assessment and complement known classical cardiological risk factors. The detection of a risk profile will potentially allow both the early identification of individuals susceptible to disease and the possible discovery of potential targets for drug of lifestyle modification.
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