AUTHOR=Goubert Emmanuelle , Altvater Marc , Rovira Marie-Noelle , Khalilov Ilgam , Mazzarino Morgane , Sebastiani Anne , Schaefer Michael K. E. , Rivera Claudio , Pellegrino Christophe TITLE=Bumetanide Prevents Brain Trauma-Induced Depressive-Like Behavior JOURNAL=Frontiers in Molecular Neuroscience VOLUME=12 YEAR=2019 URL=https://www.frontiersin.org/journals/molecular-neuroscience/articles/10.3389/fnmol.2019.00012 DOI=10.3389/fnmol.2019.00012 ISSN=1662-5099 ABSTRACT=

Brain trauma triggers a cascade of deleterious events leading to enhanced incidence of drug resistant epilepsies, depression, and cognitive dysfunctions. The underlying mechanisms leading to these alterations are poorly understood and treatment that attenuates those sequels are not available. Using controlled-cortical impact as an experimental model of brain trauma in adult mice, we found a strong suppressive effect of the sodium-potassium-chloride importer (NKCC1) specific antagonist bumetanide on the appearance of depressive-like behavior. We demonstrate that this alteration in behavior is associated with an impairment of post-traumatic secondary neurogenesis within the dentate gyrus of the hippocampus. The mechanism mediating the effect of bumetanide involves early transient changes in the expression of chloride regulatory proteins and qualitative changes in GABA(A) mediated transmission from hyperpolarizing to depolarizing after brain trauma. This work opens new perspectives in the early treatment of human post-traumatic induced depression. Our results strongly suggest that bumetanide might constitute an efficient prophylactic treatment to reduce neurological and psychiatric consequences of brain trauma.