Related Experiment Videos
Dantrolene and recovery from heat stroke
1IDF Medical Corps, Institute of Military Physiology, Jerusalem, Israel.
Aviation, Space, and Environmental Medicine
|October 16, 1999
Summary
Dantrolene shows potential for heat stroke treatment. It effectively delays heat stroke in sedentary rats and aids cooling in exercising rats, suggesting a dual role in heat management.
Area of Science:
- Physiology
- Pharmacology
- Environmental Medicine
Background:
- Dantrolene's efficacy in heat stroke treatment is debated due to limited evidence.
- Establishing a reliable animal model is crucial for studying heat stroke interventions.
Purpose of the Study:
- To develop an animal model for evaluating dantrolene in heat stroke.
- To assess dantrolene's prophylactic and therapeutic effects on heat stroke in rats.
Main Methods:
- Male albino rats were divided into control and dantrolene-treated groups.
- Dantrolene was administered intravenously before heat stress or upon heat stroke onset.
- Physiological parameters including colonic temperature and exercise endurance were monitored.
Main Results:
- Prophylactic dantrolene delayed heat stroke onset by 70% in sedentary rats.
- Dantrolene reduced exercise endurance but attenuated core temperature rise in exercising rats.
- Post-heat stroke dantrolene administration appeared to accelerate cooling in exercising rats.
Conclusions:
- Dantrolene demonstrates prophylactic efficacy in sedentary heat stroke models.
- Dantrolene may offer therapeutic benefits in managing heat stroke, particularly in exercising individuals.
- The proposed mechanism involves dantrolene's impact on muscle contraction and vascular relaxation, reducing heat production.