Psilocybin rapidly, but not immediately, reverses reward learning deficits in a durable manner in an inflammatory rat model of depressive symptoms
Abstract
The serotonergic psychedelic, psilocybin, shows potential for rapid and sustained antidepressant effects but the underlying mechanisms remain unknown. Using a chronic interferon-alpha–induced rat model of depression, we show acute psilocybin (0.3 mg/kg) reverses impaired reward-induced biases within 24hrs, with effects enduring for at least 7 days. This suggests psilocybin can restore blunted reward processing, an effect which could significantly contribute to its sustained antidepressant effects.
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