International Journal of Medical Sciences

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19 October 2017

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Int J Med Sci 2015; 12(9):737-741. doi:10.7150/ijms.12517

Short Research Communication

Heatstroke Effect on Brain Heme Oxygenase-1 in Rats

Ya-Ting Wen1, Tsung-Ta Liu2, Yuh-Feng Lin3, Chun-Chi Chen4, Woon-Man Kung5,6, Chi-Chang Huang7, Tien-Jen Lin1,8, Yuan-Hung Wang3,9,✉, Li Wei1,10✉

1. Department of Neurosurgery, Taipei Medical University-Wan Fang Hospital, Taipei 11696, Taiwan
2. Department of Biology and Anatomy, National Defense Medical Center, Taipei 114, Taiwan
3. Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
4. Division of Nephrology, Tri-Service General Hospital, National Defense Medical Center, Taipei 114, Taiwan
5. Department of Neurosurgery, Lo-Hsu Foundation, Lotung Poh-Ai Hospital, Luodong, Yilan 265, Taiwan
6. Department of Exercise and Health Promotion, College of Education, Chinese Culture University, Taipei 11114, Taiwan
7. Graduate Institute of Sports Science, National Taiwan Sport University, Taoyuan 33301, Taiwan
8. Graduate Institute of Injury Prevention and Control, College of Public Health and Nutrition, Taipei Medical University, Taipei 11031, Taiwan
9. Division of General Surgery, Department of Urology, Shuang Ho Hospital, Taipei Medical University, New Taipei City 23561, Taiwan
10. The PhD Program of Translational Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan

Abstract

Exposure to high environmental temperature leading to increased core body temperature above 40°C and central nervous system abnormalities such as convulsions, delirium, or coma is defined as heat stroke. Studies in humans and animals indicate that the heat shock responses of the host contribute to multiple organ injury and death during heat stroke. Heme oxygenase-1 (HO-1)—a stress-responsive enzyme that catabolizes heme into iron, carbon monoxide, and biliverdin—has an important role in the neuroprotective mechanism against ischemic stroke. Here, we investigated the role of endogenous HO-1 in heat-induced brain damage in rats. RT-PCR results revealed that levels of HO-1 mRNA peaked at 0 h after heat exposure and immunoblot analysis revealed that the maximal protein expression occurred at 1 h post-heat exposure. Subsequently, we detected the HO-1 expression in the cortical brain cells and revealed the neuronal cell morphology. In conclusion, HO-1 is a potent protective molecule against heat-induced brain damage. Manipulation of HO-1 may provide a potential therapeutic approach for heat-related diseases.

Keywords: heat stroke, heme oxygenase-1, cortical brain

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How to cite this article:
Wen YT, Liu TT, Lin YF, Chen CC, Kung WM, Huang CC, Lin TJ, Wang YH, Wei L. Heatstroke Effect on Brain Heme Oxygenase-1 in Rats. Int J Med Sci 2015; 12(9):737-741. doi:10.7150/ijms.12517. Available from http://www.medsci.org/v12p0737.htm