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Document 0923
DOCN M9650923
TI Occurrence of T lymphocytes in perivascular regions of the lung after
intratracheal infection of swine with Pasteurella multocida.
DT 9505
AU Berndt A; Muller G; Federal Institute for Health Protection of Consumers
and; Veterinary Medicine, Jena Branch, Germany.
SO Vet Immunol Immunopathol. 1995 Nov;49(1-2):143-59. Unique Identifier :
AIDSLINE MED/96158383
AB The defence mechanisms of the lung acting against airborne antigens
(bacteria) are not yet fully understood. Therefore, we investigated
cell-derived immunological processes in porcine pulmonary tissue. The
incidence and distribution of leukocyte subpopulations in lungs, lung
lymph nodes and tonsils from eight animals intratracheally infected with
Pasteurella multocida (P.m.) type A wild strain and from four
non-infected control animals were established by immunohistochemistry,
using a panel of monoclonal antibodies (mAbs) against specific porcine
leukocyte antigens: MHC Class II (MHC II), SWC1, SWC3a, CD2a, CD4a,
CD8b. In the test animals, a broad layer of SWC1+ cells and SWC3a+ cells
emerged in the subsinusoidal region of lung lymph nodes and in the
bronchoalveolar spaces of the lung as early as 4 and 24 h after
infection, and in the subsinusoidal regions of the lung lymph nodes only
very few cells could be stained with the mAb against the MHC II antigen.
We could not detect any MHC Class II+ cells in the bronchoalveolar
spaces at this time of the investigation. In the course of the
disappearance of the SWC1+ cells and SWC3+ cells, CD2a+, CD4a+ and, in
lower numbers, CD8b+ T lymphocytes seemed to concentrate in the
perivascular and, partially, the peribronchial regions of the lung 72 h
after infection. By means of the double immunostaining method, we could
demonstrate an accumulation of CD4a+ cells and CD8b+ cells after
infection which lacked the SWC1 antigen, indicating that these cells
were activated T lymphocytes. The same cell types (SWC1-/CD4a+ and
SWC1-/CD8b+ cells) as well as CD8b-/CD4a+ cells could be observed in the
interstitium of the lung 72 h after infection.
DE Animal Antibodies, Monoclonal CD4-Positive
T-Lymphocytes/IMMUNOLOGY/PATHOLOGY CD8-Positive
T-Lymphocytes/IMMUNOLOGY/PATHOLOGY Immunohistochemistry Lung/BLOOD
SUPPLY/*IMMUNOLOGY/PATHOLOGY Lymph Nodes/IMMUNOLOGY/PATHOLOGY
*Pasteurella multocida Pasteurella
Infections/IMMUNOLOGY/PATHOLOGY/*VETERINARY Swine Swine
Diseases/ETIOLOGY/*IMMUNOLOGY/PATHOLOGY T-Lymphocyte
Subsets/*IMMUNOLOGY/PATHOLOGY Trachea JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).