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1 From the Departments of Emergency Medicine and Internal Medicine, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
To characterize the role of circulating intercellular adhesion molecule-1 (ICAM-1) and E-selectin in patients with acute coronary syndrome, serum levels of ICAM-1 and E-selectin were measured by enzyme-linked immunosorbent assay (ELISA). Group 1 comprised 17 patients with acute myocardial infarction; group 2 included 17 patients with unstable angina; and group 3 included 19 control subjects. These 53 patients all had prolonged chest pain within 24 h and all underwent coronary angiography. Group 1 and 2 patients had significant coronary artery disease, while group 3 had normal coronary arteries. Blood samples were collected at the emergency department before antiplatelet agents were given. Serum levels of ICAM-1 were higher in group 1 and 2 (383±27 and 337±11 ng/mL, respectively) as compared with group 3 (282±18 ng/mL) (group 1 vs 3, p<0.01; group 2 vs 3, p<0.05). The serum levels of ICAM-1 were not significantly different between group 1 and 2. Serum levels of E-selectin in group 1, 2, and 3 were 58±8, 51±4, and 58±5 ng/mL, respectively. The serum levels of E-selectin showed no significant difference among the three groups. In conclusion, serum levels of ICAM-1 were elevated in patients with acute coronary syndrome within 24 h, while the E-selectin levels did not change significantly. This finding suggests that adhesion molecule may play an important role in the postrolling process of leukocyte-endothelial cell interaction in acute coronary syndrome.
Key Words: acute coronary syndrome • adhesion molecule • enzyme-linked immunosorbent assay
Submitted on October 3, 1995
Accepted on January 24, 1996
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