title: Emerging neurotrophic role of GABAB receptors in neuronal circuit development.
abstract: The proper development of highly organized structures in the central nervous system is a complex process during which key events - neurogenesis, migration, growth, differentiation, and synaptogenesis - have to take place in an appropriate manner to create functional neuronal networks. It is now well established that GABA, the main inhibitory neurotransmitter in the adult mammalian brain, plays more than a classical inhibitory role and can function as an important developmental signal early in life. GABA binds to chloride-permeable ionotropic GABAA receptors and to G-protein-coupled GABAB receptors (GABAB-Rs). Although most of the trophic actions of GABA have been attributed to the activation of GABAA receptors, recent advances show that GABAB-Rs also regulate fundamental steps of network development. This review summarizes some of the recent progress about the neurotrophic role of GABAB-Rs to neuronal development.
authors.affiliation: Institut National de la Santé et de la Recherche Médicale U-901 Marseille, France ; Aix-Marseille Université, UMR S901 Marseille, France ; Institut de Neurobiologie de la Méditerranée Marseille, France.
authors.forename: Jean-Luc
authors.initials: JL
authors.lastname: Gaiarsa
authors.forename: Christophe
authors.initials: C
authors.lastname: Porcher
keywords: GABA; GABAB receptors; cortical development; migration; synaptogenesis