Evidence of aberration of T-cell subsets in aged individuals.

Abstract:

:In the present study, T-cell subsets from aged individuals were examined by using anti-BAT (brain-associated thymocyte antigen) serum. Anti-BAT serum was raised against the human fetal brain at 28 weeks of gestation. After absorption wit AB erythrocytes, B-cell lines, and leukaemic cells, anti-BAT serum was T cell-specific but unreactive to normal B cells. The ability of anit-BAT serum-treated lymphocytes from aged individuals to respond to concanavalin A, phytohaemagglutinin, and pokeweed mitogen (PWM) was unaltered even at a high concentration. In PWM-stimulated Ig synthesis, T lymphocytes lacking the anti-BAT serum-reactive T-cell subset enhanced the PWM-stimulated Ig synthesis of autologous B lymphocytes from young individuals. The Con A-induced suppressor function of lymphocytes from aged individuals was not significantly abolished by treatment with anti-BAT serum and complement. In the autologous mixed lymphocyte reaction, the decrease in response was minimal when responder cells from aged individuals was treated with anti-BAT serum even at a high concentration. It is concluded that the T-cell subset with suppressor function is defective in aged individuals.

journal_name

Scand J Immunol

authors

Abe T,Morimoto C,Toguchi T,Kiyotaki M,Homma M

doi

10.1111/j.1365-3083.1981.tb00121.x

subject

Has Abstract

pub_date

1981-01-01 00:00:00

pages

151-7

issue

2

eissn

0300-9475

issn

1365-3083

journal_volume

13

pub_type

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