Inhalation of 2% Hydrogen Improves Survival Rate and Attenuates Shedding of Vascular Endothelial Glycocalyx in Rats with Heat Stroke
| Autor: | Takasumi Katoh, Sang Kien Truong, Yoshiki Nakajima, Soichiro Mimuro, Tsunehisa Sato, Kensuke Kobayashi |
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| Rok vydání: | 2021 |
| Předmět: |
Male
medicine.medical_specialty Heat Stroke Glycocalyx Critical Care and Intensive Care Medicine medicine.disease_cause Superoxide dismutase chemistry.chemical_compound Internal medicine Administration Inhalation medicine Animals Potency Rats Wistar Stroke Survival rate Inhalation biology Chemistry Endothelial Cells Deuterium medicine.disease Malondialdehyde Rats Disease Models Animal Endocrinology Emergency Medicine biology.protein Tumor necrosis factor alpha Oxidative stress |
| Zdroj: | Shock. 56:593-600 |
| ISSN: | 1540-0514 1073-2322 |
| DOI: | 10.1097/shk.0000000000001797 |
| Popis: | Heat stroke is characterized by excessive oxidative stress and inflammatory responses, both of which are implicated in vascular endothelial glycocalyx shedding and heat-stroke mortality. Although molecular hydrogen has antioxidation and anti-inflammatory potency, its effect on the vascular endothelial glycocalyx in heat stroke has not been examined. Therefore, the aim of this study was to investigate the influence of hydrogen inhalation on the survival and thickness of the vascular endothelial glycocalyx of rats subjected to heat stroke. Altogether, 98 Wistar rats were assigned to the experiments. A heat-controlled chamber set at 40°C temperature and 60% humidity was used to induce heat stroke. After preparation, the anesthetized rats that underwent the heating process were subjected to an hour of stabilization in which 0%, 2%, or 4% hydrogen gas was inhaled and maintained until the experiment ended. In addition to survival rate assessments, blood samples and left ventricles were collected to evaluate the thickness of the vascular endothelial glycocalyx and relevant biomarkers. The results showed that 2% hydrogen gas significantly improved survival in the heat-stroked rats and partially preserved the thickness of the endothelial glycocalyx. In addition, serum levels of endotoxin, syndecan-1, malondialdehyde, and tumor necrosis factor-α decreased, whereas superoxide dismutase levels increased, indicating that inhalation of 2% hydrogen attenuated the damage to the vascular endothelial glycocalyx through its antioxidative and anti-inflammatory effects. |
| Databáze: | OpenAIRE |
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