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Drug interactions on body temperature maintenance in the mouse
Research Communications in Chemical Pathology and Pharmacology
|April 1, 1977
Summary
Exposure to cold temperatures causes hypothermia and death in mice. Drugs like d-amphetamine worsen hypothermia, while caffeine offers slight protection. Combining caffeine and d-amphetamine is synergistic, accelerating hypothermia and death.
Area of Science:
- Environmental toxicology
- Pharmacology
Background:
- Environmental temperature exposure can induce hypothermia.
- Hypothermia can lead to significant physiological stress and mortality in animal models.
Purpose of the Study:
- To investigate the effects of environmental temperature on body temperature regulation in mice.
- To determine the impact of d-amphetamine and caffeine, alone and in combination, on hypothermia induced by cold exposure.
Main Methods:
- Mice were exposed to a cold environmental temperature.
- Intraperitoneal injections of water, d-amphetamine, caffeine, or a combination of caffeine and d-amphetamine were administered.
- Body temperature and survival rates were monitored.
Main Results:
- Cold exposure led to hypothermia and death in mice within 5-6 hours.
- D-amphetamine exacerbated the hypothermic effect and reduced survival time.
- Caffeine demonstrated a modest antagonistic effect on hypothermia.
- The combination of caffeine and d-amphetamine exhibited a synergistic effect, causing rapid hypothermia and death in less than 3 hours.
Conclusions:
- Environmental temperature significantly impacts thermoregulation and survival in mice.
- D-amphetamine intensifies cold-induced hypothermia, while caffeine provides partial protection.
- Synergistic interaction between caffeine and d-amphetamine accelerates hypothermia, highlighting complex drug-environment interactions.