Pentraxin 3 genotyping in relation to serum levels of pentraxin 3 in patients with acute ST-segment elevation myocardial infarction

Objective The aim of the study was to investigate the association of serum Pentraxin 3 and genotyping with the risk of developing AMI and its severity. Patients and methods Fifty patients admitted to the coronary care unit presented with STEMI (acute ST segment myocardial infarction) at the Cardiology Department, Menoufia University Hospital in the period from October 2014 to April 2015 and another 20 subjects age- and gender-matched were taken as the control group. All patients and control groups were subjected to the following: Full history taking, complete clinical examination. ECG and echocardiography and Laboratory investigation including: estimation of lipid profile, urea and creatinine, CKMB, troponin I, serum pentraxin 3 and Genotyping of pentraxin 3 A/G SNP (rs2305619). Results The patients with myocardial infarction had significantly higher levels of pentraxin 3 than the controls. The cut-off values for PTX3 and troponin I were 4.35 ng/ml and 0.34 μg/l respectively. Pentraxin 3 showed the highest diagnostic accuracy of coronary artery disease (96%), with sensitivity (96%) and specificity (95%). The highest serum pentraxin 3 levels were in the AA mutant homozygous type. Conclusion PTX3 is one of the earliest biomarkers for detecting acute coronary syndrome. rs2305619 AA genotyping of the pentraxin 3 gene might be a candidate risk factor for development of coronary artery disease, presumably by increased pentraxin 3 levels.