Pavlovian fear conditioning is widely used as a pre-clinical model to investigate methods for prevention and treatment of anxiety and stress-related disorders. In this model, fear memory consolidation is thought to require synaptic remodeling, which is induced by signaling cascades involving matrix metalloproteinase 9 (MMP-9). Here we investigated the effect of the tetracycline antibiotic minocycline, an inhibitor of MMP-9, on fear memory retention.

Background:
Ketamine has been used in anesthesia, pain management, and major depressive disorder. It has recently been studied in patients with post-traumatic stress disorder (PTSD).
 

Objective:
To determine the impact of ketamine on PTSD symptomatology and depression scores.
 

This narrative state-of-the-art review paper describes the progress in the understanding and treatment of Posttraumatic Stress Disorder (PTSD). Over the last four decades, the scientific landscape has matured, with many interdisciplinary contributions to understanding its diagnosis, etiology, and epidemiology. Advances in genetics, neurobiology, stress pathophysiology, and brain imaging have made it apparent that chronic PTSD is a systemic disorder with high allostatic load.

In bereavement, some individuals develop complicated grief reactions (CGR), including symptoms of prolonged grief disorder (PGD), posttraumatic stress disorder (PTSD), and depression. Symptoms of PGD often co-occur with other complicated grief reactions, e.g., PTSD and depression, pointing to the need for a transdiagnostic understanding of CGR to inform treatment. In this paper, a transdiagnostic cognitive-behavioral therapy for CGR called “CBTgrief” is explained, including its theoretical framework and treatment content.