NMDA receptor antagonism requires serotonin and noradrenaline to induce antidepressant-like effects in a treatment-resistant depression rat model - PubMed
4 hours ago
- #NMDA receptor
- #monoamines
- #antidepressant
- NMDA receptor antagonists like MK-801 show rapid antidepressant-like effects in animal models.
- MK-801's antidepressant effects were studied in male and female Wistar Kyoto rats, with a focus on serotonergic and noradrenergic mechanisms.
- MK-801 had a more pronounced antidepressant-like effect in male rats compared to females.
- Combining MK-801 with sertraline or desipramine produced synergistic antidepressant effects.
- Serotonin depletion did not cancel MK-801's effect but shifted behavioral responses from swimming to climbing.
- Noradrenaline depletion partially attenuated MK-801's effect, blocking active behaviors.
- Combined depletion of serotonin and noradrenaline abolished MK-801's antidepressant-like effects.
- The study suggests that both serotonin and noradrenaline are necessary for MK-801's antidepressant actions.