MHC class II and ICAM-1 expression and lymphocyte subsets in transbronchial biopsies from lung transplant recipients

• Published in: Transplantation Vol. 57; no. 12; p. 1762
• Main Authors: Milne, D S, Gascoigne, A D, Wilkes, J, Sviland, L, Ashcroft, T, Malcolm, A J, Corris, P A
• Format: Journal Article
• Language: English
• Published: United States 27-06-1994
• Subjects: Antigens, CD - analysis; Biopsy, Needle; Bronchiolitis Obliterans - immunology; Bronchiolitis Obliterans - pathology; Bronchoalveolar Lavage Fluid; CD4 Antigens - analysis; CD8 Antigens - analysis; Cell Adhesion Molecules - analysis; Cell Adhesion Molecules - biosynthesis; Follow-Up Studies; Graft Rejection - immunology; Graft Rejection - pathology; HLA-D Antigens - analysis; HLA-D Antigens - biosynthesis; HLA-DP Antigens - analysis; HLA-DQ Antigens - analysis; HLA-DR Antigens - analysis; Humans; Intercellular Adhesion Molecule-1; Lung Transplantation - immunology; Lung Transplantation - pathology; Lymphocyte Subsets - immunology; Lymphocyte Subsets - pathology; T-Lymphocyte Subsets - immunology; T-Lymphocyte Subsets - pathology; Time Factors; Treatment Outcome
• ISSN: 0041-1337
• DOI: 10.1097/00007890-199457120-00014

The expression of MHC class II antigens and ICAM-1 and the composition of lymphocyte infiltrates have been studied in frozen sections of transbronchial biopsies from lung transplant recipients. First, biopsies obtained from patients who showed acute rejection, OB, and normal features were compared. Second, we compared first-year biopsies from patients developing OB and patients with a good clinical outcome. HLA-DR was widely expressed on epithelia and vascular endothelium. Increased vascular HLA-DP expression was found in OB biopsies. In OB patients there was a significantly increased frequency of bronchial HLA-DP and vascular HLA-DQ expression. Expression of ICAM-1 by bronchial and bronchiolar basal cells, a phenomenon not reported previously in humans, was seen in a small number of biopsies. CD8 predominant lymphocytic infiltrates were present in all groups and were increased in OB biopsies and OB patients. Increased numbers of CD4-positive cells were found in rejection and OB when compared with normal biopsies. These findings support an immunological basis for the development of OB.