Abstract
Cardiovascular diseases are the most prevalent disease worldwide and pose a considerable threat to human health. Cytotoxic T lymphocyte-associated protein 4 (CTLA-4) plays a crucial role in the maintenance of immune diseases; however, its role in the progression of cardiovascular disorders is still unknown. The present study aimed to evaluate the relationship between CTLA-4 and myocardial infarction (MI). The Kyoto encyclopedia of genes and genomes database and the pathway studio database has revealed the role of CTLA4 as an inhibitory receptor on activated T cells. The relative expression of the CTLA-4 gene was assessed on the peripheral blood cells in 80 MI patients and 80 healthy individuals using quantitative real-time polymerase chain reaction (qRT-PCR) and also receiver operating characteristic (ROC) analysis was performed to evaluate the sensitivity and specificity of CTLA-4. We noticed the decreased expression of CTLA-4 levels in patients, compared to the control group (2.73±1.55 vs. 5.36±1.34). The study revealed the sensitivity of 0.89, specificity of 0.83, the accuracy of 0.9, and the area under the ROC curve (AUC) of 0.901 (95% CI: 0.727-0.776) for CTLA-4. The results highlighted the critical role of CTLA-4 as an inhibitory receptor in the maintenance of cardiovascular risks.
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