Differential expression of the cell adhesion molecules ICAM-1, VCAM-1, and E-selectin in normal and posttransplantation myocardium: Cell adhesion molecule expression in human cardiac allografts

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Abstract

Background: Cell adhesion molecules (CAMs) have been implicated in cardiac allograft rejection. However, previous studies have used qualitative analysis of immunohistochemical data and did not exclude patients with infection or malignancy. Methods and Results: We analyzed 40 endomyocardial biopsy specimens from 25 cardiac transplant patients and 8 specimens from patients undergoing cardiac surgery. Patients with evidence of infection or malignancy were excluded. Specimens were stained with monoclonal antibodies against ICAM-1, E-selectin, VCAM-1, and PECAM-1 (which labels all vessels). ICAM-1 expression was assessed by counting ICAM-1-positive vessels and dividing by the total number of vessels (measured by PECAM staining). Specimens were scored as positive or negative for VCAM-1 and E-selectin. We also determined whether serum-soluble ICAM-1 levels (sICAM) correlated with rejection by evaluating 145 serum specimens from 48 cardiac transplant patients and 8 specimens from patients undergoing diagnostic cardiac catheterization. ICAM- 1 was present on 50% to 60% of vessels in normal and nonrejecting specimens. Specimens with histologically significant rejection (focal moderate, moderate, or severe) had an increased percentage of ICAM-1-positive vessels: focal moderate, 77%; moderate/severe, 92% (P

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Tanio, J. W., Basu, C. B., Albelda, S. M., & Eisen, H. J. (1994). Differential expression of the cell adhesion molecules ICAM-1, VCAM-1, and E-selectin in normal and posttransplantation myocardium: Cell adhesion molecule expression in human cardiac allografts. Circulation, 89(4), 1760–1768. https://doi.org/10.1161/01.CIR.89.4.1760

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