Brain Sciences
June 27, 2021
Giovanni Martinotti, Stefania Chiappini, Mauro Pettorruso et al.
114 citations
Ketamine and esketamine, N-methyl-D-aspartate receptor antagonists, show promise for treating obsessive-compulsive disorder (OCD), eating disorders, and substance use disorders, which share features like obsessive thoughts and compulsive behaviors. A review of literature up to April 2021, following PRISMA guidelines, found that while small studies indicate remarkable results for treatment-resistant depression, PTSD, and OCD, solid evidence for benefits in OCD spectrum and addiction is still lacking. The use is supported by glutamatergic neurotransmission dysregulation. Preliminary data are optimistic, but further studies are needed to clarify unknowns and long-term effectiveness.
Journal of Psychiatric Research
June 19, 2025
Valerio Ricci, Ilenia di Muzio, Mancusi Gianluca et al.
2 citations
Synthetic cannabinoid users experiencing first-episode psychosis show more severe positive psychotic symptoms, persistent aberrant salience, and limited recovery of alexithymia over six months compared to natural cannabis users and non-users. Dissociative symptoms are more prominent in both user groups, with synthetic cannabinoid users showing minimal improvement. Negative symptoms are higher in non-users but decrease across all groups. Alexithymia correlates with specific aberrant salience subscales, particularly Feelings of Increased Significance and Sense Sharpening. These findings indicate synthetic cannabinoids are associated with more severe and persistent psychotic symptoms and emotional dysregulation than natural cannabis.
Frontiers in Psychiatry
January 8, 2024
V. Ricci, Ilenia di Muzio, F. Ceci et al.
Patients with first-episode psychosis who use synthetic cannabinoids (SPICE) experience more severe and persistent positive symptoms and less improvement in aberrant salience—the tendency to assign excessive meaning to neutral stimuli—compared with natural cannabis users and non-users. Non-users show better recovery in global functioning. Aberrant salience scores decline over six months in all groups, but SPICE-users start higher and improve less. Negative symptoms are most prominent among non-users. These findings may help clinicians tailor diagnosis and treatment for substance-induced versus non-substance-related psychosis.