Laboratory of Cancer Biology and Natural Drug Discovery, Faculty of Biology, Technion-Israel Institute of Technology, 3200003, Haifa, Israel. dmeiri@technion.ac.il.
2 papers in the library · 7 citations · publishing 2025
Psilocybin-producing fungi contain many less-studied metabolites beyond psilocybin, but most research treats them as a single group. By optimizing extraction and analysis methods, the metabolomes of 42 distinct fungal strains across 9 species were examined, revealing broad diversity within and between species. Optimal extraction of fruiting bodies used a 1:20 tissue-to-solvent ratio with 25:75 water:methanol at pH 9 for 1.5 hours, enabling quantification of 8 tryptophan-derived indolamines by HPLC-DAD and identification of putative hydroxypsilocybin by HPLC-MS/MS. A method mimicking in vivo dephosphorylation for in vitro setups was also developed. The work provides a standardized approach for studying these fungi and highlights their pharmaceutical potential.
In a non-clinical sample of 36 adults attending a 4-day ayahuasca retreat, positive affect and mindfulness skills improved while negative affect decreased in the days following the retreat compared to before. Acute experiences such as feelings of transcendence, emotional breakthrough, and challenging experiences predicted greater positive affect afterward, but none of these acute experiences were linked to improvements in negative affect or mindfulness. No participants showed clinically significant adverse responses, and only 5.5% showed some degree of potentially clinically significant deterioration in affect. The findings suggest ayahuasca may improve mood and mindfulness, with certain acute experiences contributing specifically to increased positive affect.