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1996-03-09
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Document 0271
DOCN M9650271
TI Varied effects of thoracic irradiation on peripheral lymphocyte subsets
in lung cancer patients.
DT 9605
AU Nakayama Y; Makino S; Fukuda Y; Min KY; Ikemoto T; Shimizu A; Ohsawa N;
First Department of Internal Medicine, Osaka Medical College,;
Takatsuki.
SO Intern Med. 1995 Oct;34(10):959-65. Unique Identifier : AIDSLINE
MED/96157626
AB To investigate the influence of thoracic irradiation on immunological
competence in patients with lung cancer, we examined the changes in
peripheral blood lymphocyte subsets in 15 patients before and after
radiation therapy by two-color flow cytometry techniques. After
radiation therapy, the percentage and the absolute number of CD4+CD45RA+
cells (naive T cells) and CD56+ and/or CD16+ cells (NK cells) decreased.
The percentage of CD4+human leukocyte antigen-DR(HLA-DR)+ cells
(activated CD4T cells) and CD8+HLA-DR+ cells (activated CD8T cells)
increased, although the absolute number did not change significantly.
Naive T cells may be more selectively damaged than memory T cells by
thoracic irradiation, through their recirculation behavior. The
reduction of natural killer (NK) cells is disadvantageous for anti-tumor
immunity. The percentage of HLA-DR positive T lymphocytes was
significantly increased, and thus the possibility of HLA-DR enhancement
by irradiation cannot be excluded. Therefore, thoracic irradiation has
numerous varied effects on the immunological system of lung cancer
patients.
DE Adult Aged Antineoplastic Agents, Combined/PHARMACOLOGY/THERAPEUTIC
USE Combined Modality Therapy CD4-Positive T-Lymphocytes/RADIATION
EFFECTS CD8-Positive T-Lymphocytes/RADIATION EFFECTS Female Flow
Cytometry/METHODS Human HLA-DR Antigens/IMMUNOLOGY Killer Cells,
Natural/IMMUNOLOGY/RADIATION EFFECTS Lung Neoplasms/DRUG
THERAPY/IMMUNOLOGY/PATHOLOGY/*RADIOTHERAPY Lymphocyte Count/DRUG
EFFECTS/RADIATION EFFECTS Lymphocyte Subsets/DRUG
EFFECTS/IMMUNOLOGY/*RADIATION EFFECTS Male Middle Age Neoplasm
Staging T-Lymphocytes/IMMUNOLOGY/RADIATION EFFECTS JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).