Background: Endothelial microparticles (EMPs) are 4.0 was used to determine whether EMPs were generated via activation or apoptosis/necrosis. Data
were compared between groups using the Mann-Whitney U test.
Results: EMP levels were similar in stroke mimic patients when compared with AIS; there was no difference between groups (PECAM-1, p = 0.393; E-selectin, p = 0.579). The PECAM-1/E-selectin ratio was also
similar for AIS and stroke mimics, and all were >4.0.
Conclusions: EMP levels were similar in patients with AIS and stroke mimic patients. The PECAM-1/
E-selectin ratio demonstrated that EMPs were generated via activation and not apoptosis/necrosis. This
suggests that EMP