H2S induces a suspended animation-like state in mice

Area of Science:

• Physiology
• Biochemistry
• Zoology

Background:

• Mammals typically maintain a stable core body temperature (CBT) regardless of external conditions.
• Hibernation, torpor, and estivation are natural states where mammals lose homeothermic control, lowering CBT to environmental levels.
• These states involve significant reductions in metabolic rate.

Purpose of the Study:

• To investigate if hydrogen sulfide can induce a suspended animation-like state in a nonhibernating mammal.
• To assess the reversibility and safety of this induced state.

Main Methods:

• Administering hydrogen sulfide to the house mouse (Mus musculus).
• Observing physiological responses, including metabolic rate and CBT.
• Monitoring for any adverse effects and assessing the state's reversibility.

Main Results:

• Hydrogen sulfide successfully induced a suspended animation-like state in house mice.
• The induced state was readily reversible.
• No apparent harm was observed in the treated animals.

Conclusions:

• Hydrogen sulfide can create a reversible, suspended animation-like state in a nonhibernating species.
• This discovery suggests potential therapeutic applications for inducing controlled hypothermia in medicine.