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| Research article summary (published 30 Oct 2002): |
Stability of individual differences in cellular immune responses to two different laboratory tasks.
Full Abstract
To explore the stability of immune reactivity across laboratory tasks, we correlated enumerative and functional lymphocyte responses to a speech task and a mental arithmetic task, delivered on the same occasion of testing in 31 healthy undergraduates. Both tasks were associated with an increase in peripheral CD8+ and CD56+ cell populations, and a decrease in proliferative response to phytohemagglutinin (PHA) and ratio of CD4:CD8 cells. Intertask correlations were significant for the magnitude of change in proliferative responses at two different concentrations of PHA, r = 0.76, p < .0001 and r = 0.46, p < .05, and in numbers of circulating CD56+ cells, r = 0.46, p < .005. Concomitant heart rate and systolic blood pressure responses also correlated significantly over the two experimental tasks (heart rate:
r = 0.52 and systolic blood pressure:
r = 0.58. ps < .0005). These data provide initial evidence that interindividual variability of some cellular immune responses is moderately reproducible across different stimulus conditions, providing further evidence that it may denote a stable individual difference.
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Author information
Author/s: Marsland, Anna L (AL); Henderson, Brent N (BN); Chambers, William H (WH); Baum, Andrew (A);
Affiliation: Department of Psychology, University of Pittsburgh, Pennsylvania 15260, USA. marsland@pitt.edu
Journal and publication information
Publication Type: Comparative Study; Journal Article
Journal: Psychophysiology (Psychophysiology), published in United States. (Language: eng)
Reference: 2002-Nov; vol 39 (issue 6) : pp 865-8
Dates: Created 2002/12/03; Completed 2003/02/10; Revised 2006/11/15;
PMID: 12462514, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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