medRxiv PreprintsInternational8 November 2026
Rapid antidepressant effects of psilocybin without increased SV2A binding: baseline binding predicts response
This is an official announcement record
Firsthand records what medRxiv Preprints announced and links to the original. The wording below is theirs, not ours.
We report a pre-registered [11C]UCB-J PET sub-study of a recently published randomized trial in which a single psilocybin dose produced rapid and sustained antidepressant effects in major depressive disorder (MDD). Synaptic loss has been implicated in MDD, and psychedelics induce synaptic remodeling in preclinical models within 24 hours, raising the possibility that psilocybin's antidepressant effects involve increased synaptic density. We used the PET radioligand [11C]UCB-J targeting synaptic vesicle glycoprotein 2A (SV2A) to test this in thirty-five participants with moderate-to-severe recur
Read the official announcement
Opens www.medrxiv.org
More from medRxiv Preprints
- Silent Drift and Site-level Variance in Clinical AI: Real-world performance and subgroup analysis for post-market monitoring of an FDA-cleared artificial intelligence (AI) triage tool for high-risk use case of pulmonary embolism12 November 2026
- Determinants of mpox vaccine acceptance among peri-urban residents in Sekondi-Takoradi, Western Region of Ghana: A community-based cross-sectional study12 November 2026
- Mapping disordered eating symptoms in the ABCD Study through the Eating Disorder Symptom Index12 November 2026
- Influenza Vaccination and Disease Severity Among Older Adults Hospitalized with Influenza in France: A Nationwide Cohort Study, 2016-202412 November 2026
- Associations of drinking water per- and polyfluoroalkyl substances with cause-specific mortality in men with prostate cancer12 November 2026
This content is for informational purposes only and is not medical advice. It is not intended to diagnose, treat, cure, or prevent any disease. Consult a healthcare professional before starting any supplement, treatment, or program: especially if you are pregnant, nursing, taking medication, or managing a health condition.