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Updated: Jun 12, 2026

A Method to Study the C924T Polymorphism of the Thromboxane A2 Receptor Gene
Published on: April 1, 2019
Association between AT C573T polymorphism and cardiovascular risk factors in myocardial infarction
Maria M Morales-Suarez-Varela1, Concepción Riera-Fortuny, Maria-Luisa Mansego
1Unit of Public Health and Environmental Care, Department of Preventive Medicine and Public Health, University of Valencia, Valencia, Spain. maria.m.morales@uv.es
Insights
The C573T polymorphism in the angiotensin II AT-1 receptor gene is linked to myocardial infarction risk. The CC genotype specifically increases the risk of heart disease, independent of other factors.
Area of Science:
- Genetics
- Cardiology
- Molecular Biology
Background:
- Polymorphisms in the angiotensin II AT-1 receptor (AT1) gene are implicated in cardiovascular disease pathogenesis.
- Previous research suggests associations between AT1 gene variants and myocardial infarction (MI).
Purpose of the Study:
- To investigate the association between two AT1 gene polymorphisms (AT1_1166 and AT1_573) and the risk of ischemic heart disease.
- To analyze the relationship between these genetic variations and cardiovascular risk factors.
Main Methods:
- Genotyping of AT1 gene polymorphisms (C573T and A1166C) using polymerase chain reaction and DNA restriction analysis.
- Comparison of genetic polymorphisms in 174 MI survivors and 182 matched controls.
- Multivariate analysis adjusting for gender, age, and other risk factors.
Main Results:
- The A1166C polymorphism showed no significant difference between MI patients and controls.
- Significant differences in C573T genotypes (CC and TT) were observed between cases and controls.
- The CC genotype of the C573T polymorphism was identified as a significant risk factor for myocardial infarction, even after adjusting for covariates.
Conclusions:
- A significant relationship exists between the C573T polymorphism and myocardial infarction pathogenesis.
- The CC genotype of the C573T polymorphism is a confirmed risk factor for MI.
- Further research is warranted to elucidate the multifactorial nature of this association.
Background:
Polymorphisms in the AT1 gene have been associated with various parameters related to the pathogenesis of cardiovascular diseases and to myocardial infarction. This study analyzed the relationship between two polymorphisms of the angiotensin II AT-1 receptor gene (AT1_1166 and AT1_573) and the risk of ischemic heart disease by studying their association with several cardiovascular risk factors.
Methods:
The sample population comprised 356 subjects: 174 patients who had survived myocardial infarction (61.01 ± 8.15 years), and 182 age- and gender-matched controls (mean age of 60.25 ± 9.43). The polymorphisms of the angiotensin II AT1-receptor gene (C573T and A1166C) were studied by polymerase chain reaction and DNA restriction analysis. We compared the patients' genetic polymorphism with their risk of ischemic heart disease.
Results:
The A1166C polymorphism did not show any significant differences between the groups. However, with respect to C573T, genotypes tended to differ significantly between cases and controls in the CC and TT types, remaining significant when the CC and CT+TT were grouped. Through analysis of the fit of various multivariate models, we found that the CC genotype is a risk factor for myocardial infarction. This risk remains significant after being adjusted for gender, age, homeostasis model assessment, and anthropometric variables.
Conclusions:
There is a relationship between the C573T polymorphism and the pathogenesis of myocardial infarction that seems to be due to its relationship with some risk factors. However, given the multifactorial nature of this pathology, further studies are needed to confirm the evidence that we report herein.
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