Acute pretrauma ethanol exacerbates PTSD-like phenotype in rats and is reversed by early intranasal ketamine
Scientific Reports June 14, 2026 Bar Eilat Yogev, Gal Levi, Noa Efroni et al.
Alcohol consumption before trauma is a prevalent but understudied risk factor for posttraumatic stress disorder (PTSD). This study investigated whether acute ethanol exposure prior to trauma modulates PTSD-like symptom development in rats, identified hippocampal mechanisms involved, and tested an early post-trauma intervention. Adult male Sprague-Dawley rats received ethanol (1.6 g/kg, 40% v/v,...