Document Detail


Expression of class II major histocompatibility complex antigens (HLA-DR) and lymphocyte subset immunotyping in chronic pulmonary transplant rejection.
MedLine Citation:
PMID:  7748071     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: Currently, the bronchiolitis obliterans syndrome (BOS) of chronic airway rejection represents the most significant obstacle to the long-term function of isolated pulmonary allografts in humans. Between 20% and 30% of recipients are affected by this condition. To define the possible pathogenetic role of altered expression of class II major histocompatibility complex antigens (ie, HLA-DR) in BOS, the authors studied well-characterized examples of this process immunohistologically. DESIGN: Eleven BOS specimens were compared with seven controls, represented by allografts with no pathologic abnormalities taken from patients with normal posttransplant respiratory function, as well as 14 biopsies showing acute rejection. In addition, immunophenotypic subtyping of lymphocytes in all specimens was undertaken. RESULTS: Control tissues exhibited variable but weak expression of HLA-DR in bronchiolar epithelium and alveolar pneumocytes. In comparison, immunostaining for class II major histocompatibility complex antigens in BOS showed no statistically significant differences, whereas the 14 examples of acute rejection manifested intense HLA-DR expression in epithelia and endothelial cells. The numbers of intrabronchiolar and peribronchiolar lymphocytes were clearly higher in both acute rejection and BOS than in controls, but these cells differed in lineage in the two rejection states. Acute rejection showed an obvious preponderance of CD43-positive T lymphocytes, whereas lymphoid cells in BOS were a relatively equal mixture of CD20-positive B cells and CD43-positive T cells. Moreover, incipient peribronchiolar B-cell follicles were observed in BOS. Natural killer (CD57-positive) lymphocytes were rare in all specimens. CONCLUSIONS: These data suggest that alterations in HLA-DR expression probably do not play a central role in the genesis of BOS, as they do in acute rejection. In contrast, the results of lymphocyte immunophenotyping and correlative histologic findings in BOS suggest that both T cells and B lymphocytes may be involved in the mechanism of chronic airway rejection.
Authors:
S Hasegawa; D M Ockner; J H Ritter; G A Patterson; E P Trulock; J D Cooper; M R Wick
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Archives of pathology & laboratory medicine     Volume:  119     ISSN:  0003-9985     ISO Abbreviation:  Arch. Pathol. Lab. Med.     Publication Date:  1995 May 
Date Detail:
Created Date:  1995-06-15     Completed Date:  1995-06-15     Revised Date:  2010-03-24    
Medline Journal Info:
Nlm Unique ID:  7607091     Medline TA:  Arch Pathol Lab Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  432-9     Citation Subset:  AIM; IM    
Affiliation:
Division of Cardiothoracic Surgery, Washington University Medical Center, St Louis, Mo, USA.
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MeSH Terms
Descriptor/Qualifier:
Adult
B-Lymphocytes / immunology
Biopsy
Bronchi / pathology
Bronchiolitis Obliterans / immunology*,  pathology
Epithelium / pathology
Female
Graft Rejection / immunology*
HLA-DR Antigens / analysis*
Humans
Immunophenotyping*
Lung / pathology
Lung Transplantation*
Lymphocyte Subsets / immunology*
Male
Middle Aged
Syndrome
T-Lymphocytes / immunology
Chemical
Reg. No./Substance:
0/HLA-DR Antigens

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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