Effects of ABCA1 gene polymorphisms on risk factors, susceptibility and severity of coronary artery disease

Area of Science:

• Genetics and Cardiovascular Disease Research
• Molecular Biology and Disease Mechanisms

Background:

• The genetic factors influencing coronary artery disease (CAD) severity are not fully understood.
• The role of specific ATP binding cassette protein A1 (ABCA1) gene polymorphisms (rs1800976, rs4149313, rs2230806) in CAD remains unclear.

Purpose of the Study:

• To investigate the association between ABCA1 gene polymorphisms (rs1800976, rs4149313, rs2230806) and the severity of coronary artery disease (CAD).
• To explore potential biomarkers, such as hs-CRP and CysC, involved in this relationship.

Main Methods:

• Genotyping of ABCA1 polymorphisms (rs1800976, rs4149313, rs2230806) using PCR-RFLP in 442 CAD patients and 217 controls.
• Assessment of CAD severity using Gensini score, number of stenotic vessels, and extent of stenosis.
• Measurement of biochemical markers including hs-CRP, CysC, total cholesterol, LDL-C, and uric acid.

Main Results:

• The C allele of rs1800976, G allele of rs4149313, and A allele of rs2230806 were identified as risk alleles for CAD.
• The rs1800976 polymorphism (C allele) was significantly associated with increased CAD severity markers and elevated hs-CRP and CysC levels.
• While rs4149313 and rs2230806 genotypes correlated with lipid profiles and uric acid, they did not show association with CAD severity.

Conclusions:

• The rs1800976 polymorphism in the ABCA1 gene is a significant risk factor for both the occurrence and severity of coronary artery disease.
• Elevated levels of hs-CRP and CysC may mediate the association between the rs1800976 polymorphism and CAD severity.