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Relationship of classical and non-classical risk factors with genetic variants relevant to coronary heart disease
Josep Maria Manresa1, Alberto Zamora, Marta Tomás
1Unitat de Lípids i Epidemiologia Cardiovascular, Institut Municipal d'Investigació Mèdica, Barcelona, Spain.
Insights
Genetic variants in PPAR-alpha, LPL, and TNF-alpha influence cardiovascular risk factors like lipid levels, inflammation, and oxidative status in the Mediterranean population.
Area of Science:
- Cardiovascular Genetics
- Atherothrombosis Research
- Population Health
Background:
- Atherothrombosis development is linked to established cardiovascular risk factors, with emerging evidence for genetic and non-classical factors.
- Investigating these factors is crucial for understanding disease progression in diverse populations.
Purpose of the Study:
- To determine the association between classical and non-classical cardiovascular risk factors and candidate gene polymorphisms in a Mediterranean population.
- To explore the role of specific gene variants in cardiovascular risk.
Main Methods:
- A cross-sectional study was conducted on a general Mediterranean population.
- Prevalence of classical (lipids, blood pressure, BMI, etc.) and non-classical (CRP, oxidative status, etc.) risk factors was assessed.
- Associations with five gene polymorphisms (ATP-binding cassette transporter A1, PPAR-alpha, LPL, PON1, TNF-alpha) were analyzed.
Main Results:
- PPAR-alpha-V and LPL-H alleles correlated with lower HDL-c and higher cholesterol/triglyceride ratios.
- The PPAR-alpha-V allele was linked to elevated C-reactive protein.
- Homozygotes for LPL-H and TNF-alpha-G alleles exhibited higher oxidative status.
Conclusions:
- Genetic variants PPAR-alpha-L162V, LPL-HindIII, and TNF-alpha-G-308A are associated with non-classical cardiovascular risk factors.
- These genetic factors impact lipid profiles, inflammation, and oxidative status, contributing to atherothrombosis risk.
Background:
In addition to the well established cardiovascular risk factors, evidence suggests a possible role of genetic and non-classical risk factors in the development and progression of atherothrombosis. We aimed to determine the relationship of classical and non-classical cardiovascular risk factors with candidate gene polymorphisms potentially involved in cardiovascular risk in the general Mediterranean population.
Design:
Cross-sectional study.
Methods:
We have determined the prevalence of classical (lipid profile, blood pressure, glycaemia, diabetes, smoking, body mass index, menopause and family history of coronary heart disease) and non-classical cardiovascular risk factors (infectious processes, homocysteinaemia, oxidative status, C-reactive protein, lipoprotein (a) and fibrinogen) in a population-based study. We analysed the relationship of these risk factors with the following five gene polymorphisms potentially involved in cardiovascular risk: ATP-binding cassette transporter A1-R219K, Peroxisome proliferator-activated receptor (PPAR)-alpha-L162V, Lipoprotein lipase (LPL)-HindIII, Paraoxonase (PON)1-Q192R, and Tumour necrosis factor (TNF)-alpha-G-308A.
Results:
We found PPAR-alpha-V and LPL-H alleles to be associated with decreased high-density lipoprotein-cholesterol (HDL-c) concentration and with increased total cholesterol : HDL-c and triglyceride : HDL-c ratios. Regarding the non-classical risk factors, C-reactive protein concentration was higher for the PPAR-alpha-V allele. A higher oxidative status was shown in homozygotes for LPL-H and TNF-alpha-G alleles, although the latter also had lower homocysteinaemia.
Conclusions:
Three of the genetic variants analysed, PPAR-alpha-L162V, LPL-HindIII, and TNF-alpha-G-308A, were associated with non-classical risk factors, specifically lipid profile, inflammation, and oxidative status.
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