Ayahuasca drinking using a two-bottle choice procedure in male mice.

Ayahuasca has been proposed as a treatment for substance use disorders. However, because of its hallucinogenic properties, studies investigating its abuse potential are needed. The aim of the present study was to investigate voluntary ayahuasca drinking in male mice using a two-bottle choice procedure.

Effects of chronic treatment with new strains of Lactobacillus plantarum on cognitive, anxiety- and depressive-like behaviors in male mice.

Psychobiotics correspond to a class of probiotics, mainly of the genus Lactobacillus and Bifidobacterium, capable of producing neuroactive substances, such as γ-aminobutyric acid (GABA) and serotonin, which exert effects on the brain-gut axis. Evidence suggests that psychobiotics can have a beneficial effect on mood, anxiety and cognition. The present study evaluated the effects of chronic administration of two new strains of Lactobacillus plantarum, L.