Why the study?
Opioid-induced respiratory depression suppresses breathing and destabilizes ventilation, but whether retrotrapezoid nucleus neurons can be modulated to restore breathing after fentanyl administration was unknown.
Does stimulation of RTN Phox2b+/Nmb+ neurons improve breathing during fentanyl-induced respiratory depression?
Does stimulation of RTN Phox2b+/Nmb+ neurons improve breathing during fentanyl-induced respiratory depression?
Stimulating RTN Phox2b+/Nmb+ neurons can restore respiratory function during fentanyl-induced respiratory depression, identifying a potential therapeutic target for opioid overdose.
Opioid-induced respiratory depression (OIRD) suppresses breathing and destabilizes ventilation. Using optogenetic and chemogenetic tools, we demonstrated that stimulating retrotrapezoid nucleus (RTN) Phox2b + / Nmb + neurons enhances breathing, even after fentanyl administration, whereas their inhibition exacerbates hypoventilation. These findings reveal that RTN neurons retain their ability to drive ventilation during OIRD, highlighting their potential as a therapeutic target to restore respiratory function in opioid overdose cases.
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Moreira et al. (2025) studied this question.
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