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Title: Differences in serum IL-6 response after 1°C rise in core body temperature in individuals with spinal cord injury and cervical spinal cord injury during local heat stress
Authors: Hashizaki, Takamasa
Nishimura, Yukihide
Teramura, Kenzo
Umemoto, Yasunori
Shibasaki, Manabu
Leicht, Christof A.
Kouda, Ken
Tajima, Fumihiro
Keywords: Spinal cord injury
Heat stress
Sympathetic nerve
Myokine
Issue Date: 2018
Publisher: Taylor & Francis © The Authors
Citation: HASHIZAKI, T. ... et al, 2018. Differences in serum IL-6 response after 1°C rise in core body temperature in individuals with spinal cord injury and cervical spinal cord injury during local heat stress. International Journal of Hyperthermia, 35 (1), pp.541-547.
Abstract: Objectives: Passive rise in core body temperature achieved by head-out hot water immersion (HHWI) results in acute increases in serum interleukin (IL)-6 but no change in plasma adrenaline in patients with cervical spinal cord injury (CSCI). The purpose of the present study was to determine the mechanism of heat stress-induced increase in serum IL-6. Setting: A cross-sectional study. Methods: The study subjects were 9 with CSCI, 10 with thoracic and lumbar spinal cord injury (TLSCI) and 8 able-bodied (AB) subjects. Time since injury was 16.4±4.1 years in TLSCI and 16.1±3.4 years in CSCI. Subjects were subjected to lower-body heat stress (LBH) by wearing a hot water-perfused suit until 1°C increase in core temperature. The levels of serum IL-6, plasma adrenaline, tumor necrosis factor (TNF)-α, C-reactive protein (CRP), and counts of blood cells were measured at normothermia and after LBH. Results: Serum IL-6 concentrations increased significantly immediately after LBH in all the three groups. ΔIL-6% was lower in CSCI subjects compared with AB subjects. Plasma adrenaline concentrations significantly increased after LBH in AB and TLSCI subjects, but did not change throughout the study in CSCI subjects. Cardiac output and heart rate increased at the end of LBH in all three groups. Conclusion: Under a similar increase in core temperature, ΔIL-6% was lower in the CSCI group compared with the AB group. These findings suggest that the observed rise in IL-6 during hyperthermia is mediated, at least in part, by plasma adrenaline.
Description: This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Version: Published
DOI: 10.1080/02656736.2018.1511838
URI: https://dspace.lboro.ac.uk/2134/34890
Publisher Link: https://doi.org/10.1080/02656736.2018.1511838
ISSN: 0265-6736
Appears in Collections:Published Articles (Sport, Exercise and Health Sciences)

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