Diabetes Drug Eases Allergic Shock in Mice
Graded Preliminary — an animal study with small groups, backed by cell work and human records; mouse results do not transfer directly to people, and the human data cannot show cause.
Animal study. Findings may not carry over to people, which is why the grade is capped at Preliminary.
- Design
- Animal study
- Participants
- 16
- Duration
- —
- Funding
- Japan Society for the Promotion of Science; Japan Agency for Medical Research…
In mice, acarbose worked through gut bacteria and their succinate to blunt a severe allergic reaction.
An old diabetes drug may do more than slow blood sugar. Acarbose stops starch and sugar from being broken down in the small intestine. More of it reaches the colon, where gut bacteria feed on it. In mice, that shifted the gut bacteria and softened a severe allergic reaction.
The mice had been made allergic to egg protein. After the triggering injection, their body temperature dropped sharply, a sign of allergic shock. In mice given acarbose, the drop was much smaller. Mast cells, the immune cells that release their messengers during allergy, did so less often. When antibiotics wiped out the gut bacteria, the protection disappeared. One bacterium, Parabacteroides distasonis, grew more common and produced more succinate, a simple acid. Giving succinate in the drinking water also blunted the reaction.
All of this comes from mice. In human medical records, allergic shock was less common among people treated with this class of drug. But those records held no information on diet or gut bacteria, so they cannot show cause and effect.
Conflict of Interest Disclosure: The authors declare no competing interests.
Disclaimer: Research summaries are provided for informational purposes only and do not constitute medical advice. Always consult a qualified healthcare professional before making changes to your health routine.