Skip to Main content Skip to Navigation
Journal articles

PAI-1 protein is a key molecular effector in the transition from normal to PTSD-like fear memory

Abstract : Moderate stress increases memory and facilitates adaptation. In contrast, intense stress can induce pathological memories as observed in post-traumatic stress disorders (PTSD). A shift in the balance between the expression of tPA and PAI-1 proteins is responsible for this transition. In conditions of moderate stress, glucocorticoid hormones increase the expression of the tPA protein in the hippocampal brain region which by triggering the Erk1/2MAPK signaling cascade strengthens memory. When stress is particularly intense, very high levels of glucocorticoid hormones then increase the production of PAI-1 protein, which by blocking the activity of tPA induces PTSD-like memories. PAI-1 levels after trauma could be a predictive biomarker of the subsequent appearance of PTSD and pharmacological inhibition of PAI-1 activity a new therapeutic approach to this debilitating condition.
Document type :
Journal articles
Complete list of metadatas

https://hal-cnrs.archives-ouvertes.fr/hal-03132810
Contributor : Jean-Michel Revest <>
Submitted on : Friday, February 5, 2021 - 1:58:03 PM
Last modification on : Friday, February 5, 2021 - 1:58:04 PM

Links full text

Identifiers

Collections

Citation

C. Bouarab, V. Roullot-Lacarrière, M. Vallee, A. Le Roux, C. Guette, et al.. PAI-1 protein is a key molecular effector in the transition from normal to PTSD-like fear memory. Molecular Psychiatry, Nature Publishing Group, 2021, ⟨10.1038/s41380-021-01024-1⟩. ⟨hal-03132810⟩

Share

Metrics

Record views

5