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Assessment of lipoprotein-associated phospholipase a2 in coronary artery disease patients of north India

Brijesh Rathore*, Sumit Thakur, Kalpana Jaggi, Ritu Karoli, Abhishek Mathur, Farzana Mahdi


Lipoprotein associated phospholipase A2 (Lp-PLA2) is an inflammatory biomarker which play an important role in the pathophysiology of coronary artery disease (CAD). Lp-PLA2 is produced by inflammatory cells like monocytes, macrophage etc. it hydrolyses platelet activating factor and oxidatively fragmented phospholipids. It is an emerging risk factor for CAD, because of its high vascular specificity and direct relation with plaque instability and rupture. Several reports reveal that plasma Lp-PLA2 is a good biomarker of vascular inflammation, atherosclerotic vulnerability and future cardiovascular events. The correlation between Lp-PLA2 and CAD remains poorly investigated in north Indian population. This study is aimed to investigate the Lp-PLA2 levels as a predictor of CAD. Study was conducted with One hundred fifty CAD patients and One hundred fifty normal healthy subjects.  Serum Lp-PLA2 level estimation reveal that CAD patients bears significantly elevated circulatory Lp-PLA2 levels in comparison to normal healthy population. The increase in Lp-PLA2 levels was found irrespective of sex i.e., male and female. We also observed a non-significant change in Lp-PLA2 levels among CAD male and female patients. The study suggests that Lp-PLA2 may be proatherogenic and contribute to atherogenicity and incidence of cardiovascular disease. The stimulated activity of this enzyme may predict CAD patients without known CAD, independent of heart disease risk factors. We can conclude that there is a positive correlation between Lp-PLA2 and risk of CAD events and hence Lp-PLA2 can be considered as a risk associated inflammatory marker for CAD, in north India population.


Lp-PLA2; Coronary artery disease; risk factor; Biomarker; north India.

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