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Psychosomatic Medicine, Vol 54, Issue 6 673-679, Copyright © 1992 by American Psychosomatic Society
ORIGINAL ARTICLES |
EA Bachen, SB Manuck, AL Marsland, S Cohen, SB Malkoff, MF Muldoon and BS Rabin
Department of Psychology, University of Pittsburgh, PA 15260.
To evaluate effects of acute mental stress on aspects of cellular immunity, lymphocyte populations and phytohemagglutinin (PHA)-stimulated T-cell mitogenesis were measured in 33 healthy young men, both before and immediately following subjects' performance of a frustrating, 21-minute laboratory task (Stroop test). Relative to baseline evaluations, post-task measurements showed a significant reduction in mitogenesis and alterations in various circulating lymphocyte populations; the latter included a diminished T-helper/T-suppressor cell ratio and an elevation in the number of natural killer cells. Eleven subjects assigned to a control (unstressed) condition exhibited no changes in lymphocyte populations, but did show an increase in T-cell proliferation, compared with pretask measurements.
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