PMID- 10217652 OWN - NLM STAT- MEDLINE DCOM- 19990517 LR - 20190623 IS - 1524-4539 (Electronic) IS - 0009-7322 (Linking) VI - 99 IP - 16 DP - 1999 Apr 27 TI - Expression of cell adhesion molecules in dilated cardiomyopathy: evidence for endothelial activation in inflammatory cardiomyopathy. PG - 2124-31 AB - BACKGROUND: Dilated cardiomyopathy (DCM) is pathogenically linked to inflammatory cardiomyopathy (InfCM), which is characterized by intramyocardial infiltration. The transendothelial migration of immunocompetent cells is mediated by cell adhesion molecules (CAMs). METHODS AND RESULTS: We investigated the expression pattern of CAMs (immunoglobulin superfamily, 32 selectins, and beta1- and beta2-integrins) in endomyocardial biopsies from DCM patients (n=152; left ventricular ejection fraction <40%) using immunohistochemistry. Whereas few specimens obtained at autopsy (controls; n=14) presented enhanced expression regarding single endothelial CAMs (human leukocyte antigen [HLA] class I, 7%; HLA-DR, 14%; CD29, 14%), none demonstrated concurrent abundance of >3 CAMs (inflammatory endothelial activation), nor did any control tissue prove positive for InfCM (>7.0 CD3+ lymphocytes per 1 mm2). In comparison, 64% (n=97) of the DCM biopsies were evaluated positive for InfCM and 67% (n=101) for inflammatory endothelial activation, respectively. Whereas expression of HLA class I, HLA-DR, intercellular cell adhesion molecule-1, and CD29 was distributed homogeneously within a patient's serial sections, immunoreactivity of vascular cell adhesion molecule-1, lymphocyte function antigen-3, and the selectins was accentuated on single vascular endothelia. Sixty-six percent of the DCM biopsies presented CD29 abundance also within the extracellular matrix and the sarcolemma. CD62P and CD62E were present in 16% and 40% of the DCM patients, respectively. Endothelial CAM representatives correlated with one another (P<0.05), except for CD62P with HLA. Endothelial CAM expression correlated with intramyocardial infiltrates phenotyped by the corresponding counterreceptors. CONCLUSIONS: Inflammatory endothelial activation is present in 67% of DCM patients. Because CAM expression correlates with the immunohistological diagnosis of InfCM and counterreceptor-bearing intramyocardial infiltrates, evaluation of endothelial CAMs might be of diagnostic significance in InfCM. FAU - Noutsias, M AU - Noutsias M AD - Department of Cardiology, University Hospital Benjamin Franklin, Free University of Berlin, Berlin, Germany. noutsias@zedat,fu-berlin.de FAU - Seeberg, B AU - Seeberg B FAU - Schultheiss, H P AU - Schultheiss HP FAU - Kuhl, U AU - Kuhl U LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Circulation JT - Circulation JID - 0147763 RN - 0 (Antigens, CD) RN - 0 (CD18 Antigens) RN - 0 (Cell Adhesion Molecules) RN - 0 (HLA-DR Antigens) RN - 0 (Histocompatibility Antigens Class I) RN - 0 (Integrin beta1) RN - 0 (Selectins) RN - 0 (Vascular Cell Adhesion Molecule-1) RN - 126547-89-5 (Intercellular Adhesion Molecule-1) SB - IM MH - Antigens, CD/analysis MH - CD18 Antigens/analysis/biosynthesis MH - Cardiomyopathy, Dilated/*immunology/pathology MH - Cell Adhesion Molecules/analysis/*biosynthesis MH - Endothelium, Vascular/*immunology MH - Female MH - HLA-DR Antigens/analysis MH - Histocompatibility Antigens Class I/analysis MH - Humans MH - Inflammation MH - Integrin beta1/analysis/biosynthesis MH - Intercellular Adhesion Molecule-1/analysis/biosynthesis MH - Lymphocytes/immunology MH - Male MH - Middle Aged MH - Myocardium/*immunology/pathology MH - Selectins/analysis/biosynthesis MH - Vascular Cell Adhesion Molecule-1/analysis/biosynthesis EDAT- 1999/04/27 00:00 MHDA- 1999/04/27 00:01 CRDT- 1999/04/27 00:00 PHST- 1999/04/27 00:00 [pubmed] PHST- 1999/04/27 00:01 [medline] PHST- 1999/04/27 00:00 [entrez] AID - 10.1161/01.cir.99.16.2124 [doi] PST - ppublish SO - Circulation. 1999 Apr 27;99(16):2124-31. doi: 10.1161/01.cir.99.16.2124.