Abstract
Objective
Coronary artery disease (CAD) is a complex disorder influenced by genetic and environmental factors. This case-control study investigated the association between Sirtuin SIRT3 gene polymorphisms, serum malondialdehyde (MDA) levels, and CAD susceptibility.
Methods
Blood samples were collected from 70 CAD cases and 30 controls at the Cardiac Center, Azadi Teaching Hospital, Duhok, Iraq. Genomic DNA was extracted, and PCR-based allele genotyping determined SIRT3 rs11246029 T/C polymorphisms. Serum MDA levels were measured using ELISA. Statistical analysis included t-tests, Mann-Whitney tests, and Spearman correlations. Odds ratios (OR) with 95% confidence intervals (CI) assessed genotypes/alleles and CAD associations. The accuracy of serum MDA in predicting the severity of CAD was evaluated using receiver operating characteristic (ROC) curve analysis.
Results
There were no significant variations in serum MDA levels between controls and CAD patients in the study. The diagnostic accuracy of serum MDA for CAD severity prediction was modest (Area Under Curve (AUC) = 0.56). Correlations revealed associations between MDA and total bilirubin (negative) and Troponin (positive). CRP correlated positively with LDH, glucose, cholesterol, LDL, CKmB, and Troponin. CKmB and Troponin are positively associated with clinical characteristics. Genotype analysis identified a significantly higher CAD risk with the CC genotype compared to controls.
Conclusion
These findings shed light on the potential role of SIRT3 gene polymorphisms and serum MDA levels in CAD susceptibility. Further research is needed to understand underlying mechanisms and therapeutic implications based on these markers.
Trial registration
15092021-9-12. Registered 15 September 2021.
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Data Availability
Data will be made available on request.
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Acknowledgements
The authors express their gratitude to the Cardiac Center/Azadi Teaching Hospital team for their continuous support during the sample collection process. Special thanks are extended to Dr Ashur Y. Oraha, a cardiovascular surgeon, who played a crucial role in patient selection. Additionally, the authors would like to acknowledge the assistance provided by Mr. Govand in conducting the genetic study.
Funding
This research received no specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
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Lina N. Adam was responsible for collecting the patients’ data, conducting the genetic analysis, interpreting the results, and writing the manuscript. Omar A.M. AL Habib and Mudhir S. Shekha supervised the project and conceived the original idea. All authors contributed to the revision of the manuscript and reviewed and approved the final version.
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The Research Ethics Committee of the Duhok Directorate General of Health in Duhok, Iraq, accepted the study protocol “Trial registration: 15092021-9-12. Registered 15 September 2021”.
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Adam, L.N., Al-Habib, O.A.M. & Shekha, M.S. Exploring the role of Sirtuin 3 gene polymorphisms and oxidative stress markers in the susceptibility to coronary artery disease. Mol Biol Rep 50, 9221–9228 (2023). https://doi.org/10.1007/s11033-023-08825-3
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DOI: https://doi.org/10.1007/s11033-023-08825-3