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Samuel Cândido Freres

2 papers in the library · publishing 2025-2026

Papers

Psicodélicos no tratamento de transtornos psiquiátricos: Evidências clínicas e desafios éticos

Journal of Medical and Biosciences Research. May 30, 2026 Mickail Ivo Souza, Samuel Cândido Freres, Bruna Aparecida Alves Villafranca et al.

Psychedelics such as psilocybin, MDMA, and ayahuasca show promising results for treatment-resistant depression, anxiety, post-traumatic stress disorder, and substance dependence, especially when combined with supervised psychotherapy. They appear to work through neurobiological mechanisms involving neuroplasticity, brain connectivity, and emotional processing. However, significant challenges remain regarding safety, regulation, patients' psychological vulnerability, and the need for rigorous clinical protocols. The review concludes that psychedelics represent an innovative and potentially transformative perspective in contemporary psychiatry, though more robust studies are needed to consolidate their efficacy, safety, and clinical applicability.

Psicodélicos e plasticidade cerebral no tratamento do transtorno de estresse pós-traumático

Brazilian Journal of Implantology and Health Sciences August 14, 2025 A. Silva, Érika Barros Teixeira da Cruz, Samuel Cândido Freres et al.

Psychedelics such as MDMA and psilocybin may help treat post-traumatic stress disorder (PTSD) by promoting neuroplasticity and facilitating the reconsolidation of traumatic memories. MDMA reduces amygdala response and increases feelings of safety during psychotherapy, allowing patients to reprocess traumatic memories. Psilocybin can loosen rigid thought patterns, supporting emotional reframing. These substances modulate serotonin 5-HT2A receptors, enhancing neural connectivity and reorganization of memory and emotion circuits. Safety requires strict protocols, careful screening, and professional supervision due to risks like acute anxiety and cardiovascular instability. When used in controlled, therapy-integrated settings, psychedelics represent a promising avenue for PTSD treatment, though clinical adoption depends on regulation, training, and further long-term efficacy studies.