Carotid body dysfunction contributes to respiratory instability in Rett syndrome.

Carotid body dysfunction causes respiratory instability in Rett syndrome, with significant stabilization observed when peripheral chemoreceptor activity is modulated.

• Why it matters: Disordered breathing in Rett syndrome severely affects patients' quality of life and can be life-threatening, yet its underlying mechanisms remain poorly understood, hindering effective treatments.
• What they did: Researchers used MeCP2-deficient mice to investigate peripheral chemoreceptor contributions, employing oxygen therapy, gene knockdown, and transcriptome analysis, focusing on carotid body function and dopaminergic signaling.
• The result: Findings reveal that targeting peripheral chemoreceptors, especially through dopamine receptor pathways, stabilizes breathing, highlighting new therapeutic avenues for managing disordered breathing in Rett syndrome.