Vascular Inflammation and Angiographic Severity of Coronary Artery Disease in Young Asian Indians

Abstract

Background: By 2015, India will have the largest coronary artery disease (CAD) burden in the world. Indians manifest CAD at a younger age. Inflammation plays a key role in CAD progression. Inflammatory marker high sensitivity C-reactive protein (hsCRP) predicts CAD risk either by correlation with CAD extent (disease marker) or as an indicator of inflammatory event that leads to plaque rupture (a process marker). Aim: To assess the role of vascular inflammation and correlate with coronary atherosclerosis in an economically and relevant section of population of young Indians. Methods: Serum hs-CRP (measured by immune-turbidimetry technique) level was measured in young adults (18–45 years) with angiographic proven CAD (60 patients), and compared with those >45 years age (24 patients), and in controls with no CAD (14 patients).Later, the levels of hs-CRP were compared with the angiographic stenosis and extent score in young CAD patients. Results: Mean hsCRP was elevated in Young CAD patients more than in those of Old CAD patients and Controls, and this trend was found to be significant by ANOVA (P = 0.028).The hs-CRP levels were found to be in direct proportion to both stenosis and extent score of coronary artery disease (P <0.01) in young adults. Conclusion: Serum hs-CRP levels and inflammation have a positive correlation with the disease burden in the young CAD patient. Premature CAD in Young Asian Indians could be partly explained by increased vascular inflammation. Further studies and interventions to identify & reduce risk factors in an economically and socially relevant section of population of a fast developing country like India is urgently needed. Key words: Angiographic stenosis, Angiographic extent, hs-CRP, Young coronary artery disease.