Effect of heat acclimation on heat shock protein 72 and interleukin-10 in humans

Yamada, Paulette M., Amorim, Fabiano T., Moseley, Pope L., Robergs, Robert A., & Schneider, Suzanne M. (2007) Effect of heat acclimation on heat shock protein 72 and interleukin-10 in humans. Journal of Applied Physiology, 103(4), pp. 1196-1204.

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Heat acclimation (HA) results in whole body adaptations that increase heat tolerance, and in addition, HA may also result in protective cellular adaptations. We hypothesized that, after HA, basal intracellular heat shock protein (HSP) 72 and extracellular IL-10 levels would increase, while extracellular HSP72 levels decrease. Ten male and two female subjects completed a 10-day exercise/HA protocol (100-min exercise bout at 56% of maximum O2 uptake in a 42.5°C DB, 27.9% RH environment); subjects exhibited classic adaptations that accompany HA. Peripheral blood mononuclear cells (PBMCs) were isolated before and after each acclimation session on days 1, 6, and 10; plasma and serum were collected before and after exercise on the 1st and 10th day of HA. SDS-PAGE was used to determine PBMC HSP72 levels during HA, and ELISA was used to measure plasma IL-10 and serum HSP72 concentrations. The increase in PBMC HSP72 from pre- to postexercise on the 1st day of HA was not significant (mean ± SD, 1.0 ± 0 vs. 1.6 ± 0.6 density units). Preexercise HSP72 levels on day 1 were significantly lower compared with the pre- and postexercise samples on days 6 and 10 (mean ± SD, day 6: 2.1 ± 1.0 and 2.2 ± 1.0, day 10: 2.0 ± 1.3 and 2.2 ± 1.0 density units, respectively, P < 0.05). There were no differences in plasma IL-10 and serum HSP72 postexercise or after 10 days of HA. The sustained elevation of HSP72 from days 6 to 10 may be evidence of a cellular adaptation to HA that contributes to improved heat tolerance and reduced heat illness risk.

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ID Code: 96820
Item Type: Journal Article
Refereed: Yes
Keywords: heat shock protein 72; interleukin 10, adult; article; blood salvage; enzyme linked immunosorbent assay; exercise; female; heat acclimatization; heat injury; heat tolerance; human; human cell; human experiment; male; normal human; oxygen consumption; peripheral blood mononuclear cell; polyacry, Adaptation, Physiological; Adult; Exercise Test; Female; Heat; HSP72 Heat-Shock Proteins; Humans; Interleukin-10; Leukocytes, Mononuclear; Male; Oxygen Consumption
DOI: 10.1152/japplphysiol.00242.2007
ISSN: 8750-7587
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Schools > School of Exercise & Nutrition Sciences
Deposited On: 08 Aug 2016 03:38
Last Modified: 16 Aug 2016 03:30

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