PECAM1 and metabolic syndrome: As shown in Figure 1, the expression of CD31 (6.03±0.27 vs. 3.84±0.09, P< 0.05) and CD41a (7.32±0.37 vs. 3.74±0.08, P< 0.05) in plasma microparticles of MetS patients were significantly higher than the control (Figure 1A), which suggested that EMPs and PMPs increased in MetS blood circulation.