Single Rapamycin Dose Reverses Autism-Like Symptoms in Mice Within 2 Hours
Updated
Updated · ScienceDaily · Jul 28
Single Rapamycin Dose Reverses Autism-Like Symptoms in Mice Within 2 Hours
3 articles · Updated · ScienceDaily · Jul 28
Summary
A single rapamycin dose normalized brain activity and eased repetitive behavior, sensory hypersensitivity and seizure vulnerability in adult mice within about two hours, UCLA researchers reported.
The mice had developed lasting autism-like changes after mild maternal inflammation during pregnancy, including brain overgrowth, mTOR overactivity and disrupted communication across brain networks.
Gene analyses pointed to a rapid functional reset rather than structural repair, with the strongest effects in excitatory neurons and abnormal expression tied to autism, epilepsy and ion channels reversing after treatment.
The benefit was temporary, and daily dosing lost effectiveness after several weeks as tolerance emerged; researchers also warned rapamycin can be toxic and is not a practical human treatment.
The study instead suggests some autism-related brain circuits remain modifiable in adulthood, highlighting mTOR signaling, network organization and excitation-inhibition balance as safer therapeutic targets.
If adult brain circuits can be rapidly rewired, could future medications temporarily pause severe autism traits without altering permanent brain structure?
How does a mother's gut microbiome secretly conspire with mild prenatal infections to permanently alter a developing fetus's brain networks?