[article] 
inJournal of Autism and Developmental Disorders > 37-5 (May 2007) . - p.911-920

Titre :	[3H]-Flunitrazepam-labeled Benzodiazepine Binding Sites in the Hippocampal Formation in Autism: A Multiple Concentration Autoradiographic Study
Type de document :	Texte imprimé et/ou numérique
Auteurs :	Jeffrey T. GUPTILL, Auteur ; Anne B. BOOKER, Auteur ; Terrell T. GIBBS, Auteur ; Thomas L. KEMPER, Auteur ; Gene J. BLATT, Auteur ; Margaret L. BAUMAN, Auteur
Année de publication :	2007
Article en page(s) :	p.911-920
Langues :	Anglais (eng)
Mots-clés :	Developmental-disorder Autoradiography Hippocampus GABAergic-receptors Hippocampal-circuitry
Index. décimale :	PER Périodiques
Résumé :	Increasing evidence indicates that the GABAergic system in cerebellar and limbic structures is affected in autism. We extended our previous study that found reduced [3H]flunitrazepam-labeled benzodiazepine sites in the autistic hippocampus to determine whether this reduction was due to a decrease in binding site number (B max) or altered affinity (K d) to bind to the ligand. Quantitation of hippocampal lamina demonstrated a 20% reduction in B max indicating a trend toward a decreased number of benzodiazepine binding sites in the autistic group but normal K d values. A reduction in the number of hippocampal benzodiazepine binding sites suggests alterations in the modulation of GABAA receptors in the presence of GABA in the autistic brain, possibly resulting in altered inhibitory functioning of hippocampal circuitry.
En ligne :	http://dx.doi.org/10.1007/s10803-006-0226-7
Permalink :	https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=140

[article] [3H]-Flunitrazepam-labeled Benzodiazepine Binding Sites in the Hippocampal Formation in Autism: A Multiple Concentration Autoradiographic Study [Texte imprimé et/ou numérique] / Jeffrey T. GUPTILL, Auteur ; Anne B. BOOKER, Auteur ; Terrell T. GIBBS, Auteur ; Thomas L. KEMPER, Auteur ; Gene J. BLATT, Auteur ; Margaret L. BAUMAN, Auteur . - 2007 . - p.911-920.
Langues : Anglais (eng)
in Journal of Autism and Developmental Disorders > 37-5 (May 2007) . - p.911-920

Mots-clés :	Developmental-disorder Autoradiography Hippocampus GABAergic-receptors Hippocampal-circuitry
Index. décimale :	PER Périodiques
Résumé :	Increasing evidence indicates that the GABAergic system in cerebellar and limbic structures is affected in autism. We extended our previous study that found reduced [3H]flunitrazepam-labeled benzodiazepine sites in the autistic hippocampus to determine whether this reduction was due to a decrease in binding site number (B max) or altered affinity (K d) to bind to the ligand. Quantitation of hippocampal lamina demonstrated a 20% reduction in B max indicating a trend toward a decreased number of benzodiazepine binding sites in the autistic group but normal K d values. A reduction in the number of hippocampal benzodiazepine binding sites suggests alterations in the modulation of GABAA receptors in the presence of GABA in the autistic brain, possibly resulting in altered inhibitory functioning of hippocampal circuitry.
En ligne :	http://dx.doi.org/10.1007/s10803-006-0226-7
Permalink :	https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=140