COMPARATIVE STUDY
JOURNAL ARTICLE
MULTICENTER STUDY

P-selectin and subclinical and clinical atherosclerosis: the Multi-Ethnic Study of Atherosclerosis (MESA)

Suzette J Bielinski, Cecilia Berardi, Paul A Decker, Phillip S Kirsch, Nicholas B Larson, James S Pankow, Michele Sale, Mariza de Andrade, Hugues Sicotte, Weihong Tang, Naomi Q Hanson, Christina L Wassel, Joseph F Polak, Michael Y Tsai
Atherosclerosis 2015, 240 (1): 3-9
25744700

OBJECTIVE: P-selectin is a cellular adhesion molecule that has been shown to be crucial in development of coronary heart disease (CHD). We sought to determine the role of P-selectin on the risk of atherosclerosis in a large multi-ethnic population.

METHODS: Data from the Multi-Ethnic Study of Atherosclerosis (MESA), including 1628 African, 702 Chinese, 2393 non-Hispanic white, and 1302 Hispanic Americans, were used to investigate the association of plasma P-selectin with CHD risk factors, coronary artery calcium (CAC), intima-media thickness, and CHD. Regression models were used to investigate the association between P-selectin and risk factors, Tobit model for CAC, and Cox regression for CHD events.

RESULTS: Mean levels of P-selectin differed by ethnicity and were higher in men (P<0.001). For all ethnic groups, P-selectin was positively associated with measures of adiposity, blood pressure, current smoking, LDL, and triglycerides and inversely with HDL. A significant ethnic interaction was observed for the association of P-selectin and prevalent diabetes; however, P-selectin was positively associated with HbA1c in all groups. Higher P-selectin levels were associated with greater prevalence of CAC. Over 10.1 years of follow-up, there were 335 incident CHD events. There was a positive linear association between P-selectin levels and rate of incident CHD after adjustment for traditional risk factors. However, association was only significant in non-Hispanic white Americans (HR: 1.81, 95% CI 1.07 to 3.07, P=0.027).

CONCLUSION: We observed ethnic heterogeneity in the association of P-selectin and risk of CHD.

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