Traduction: G.M.
Psychiatry Res. 2016 Sep 20;256:44-49. doi: 10.1016/j.pscychresns.2016.09.007.
Altered neurotransmitter metabolism in adolescents with high-functioning autism
Drenthen GS1, Barendse EM2, Aldenkamp AP3, van Veenendaal TM4, Puts NA5, Edden RA5, Zinger S6, Thoonen G7, Hendriks MP8, Kessels RP9, Jansen JF10.
Author information
- 1Department of Electrical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands; School for Mental Health and Neuroscience, Maastricht University Medical Center, Maastricht, The Netherlands; Department of Radiology, Maastricht University Medical Center, Maastricht, The Netherlands.
- 2Department of Neurology, Maastricht University Medical Center, Maastricht, The Netherlands; Department of Behavioral Sciences, Epilepsy Center Kempenhaeghe, Heeze, The Netherlands; Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, The Netherlands.
- 3Department of Electrical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands; Department of Neurology, Maastricht University Medical Center, Maastricht, The Netherlands; School for Mental Health and Neuroscience, Maastricht University Medical Center, Maastricht, The Netherlands; Department of Behavioral Sciences, Epilepsy Center Kempenhaeghe, Heeze, The Netherlands.
- 4School for Mental Health and Neuroscience, Maastricht University Medical Center, Maastricht, The Netherlands; Department of Radiology, Maastricht University Medical Center, Maastricht, The Netherlands; Department of Behavioral Sciences, Epilepsy Center Kempenhaeghe, Heeze, The Netherlands.
- 5Russell H. Morgan Department of Radiology and Radiological Science, The Johns Hopkins University School of Medicine, Baltimore, MD, USA; F.M. Kirby Center for Functional Brain Imaging, Kennedy Krieger Institute, Baltimore, MD, USA.
- 6Department of Electrical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands; Department of Behavioral Sciences, Epilepsy Center Kempenhaeghe, Heeze, The Netherlands.
- 7Special Education School de Berkenschutse, Sterkselseweg 65, 5591 VE Heeze, The Netherlands.
- 8Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, The Netherlands; Department of Behavioral Sciences, Epilepsy Center Kempenhaeghe, Heeze, The Netherlands.
- 9Donders Institute for Brain, Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, The Netherlands; Department of Medical Psychology, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands.
- 10School for Mental Health and Neuroscience, Maastricht University Medical Center, Maastricht, The Netherlands; Department of Radiology, Maastricht University Medical Center, Maastricht, The Netherlands. Electronic address: Jacobus.jansen@mumc.nl
Abstract
Des
études antérieures ont suggéré que les altérations des
neurotransmetteurs excitateurs/inhibiteurs pourraient jouer un rôle
crucial dans les troubles du spectre de l'autisme(TSA). La spectroscopie
à résonance magnétique des protons (1H-MRS) peut fournir des
informations précieuses sur le métabolisme du cerveau et
les concentrations de neurotransmetteurs anormaux . Cependant,
peu d'études d'1H-MRS ont été publiées sur le déséquilibre des deux
neurotransmetteurs les plus abondants dans le TSA: le glutamate (Glu) et l'acide gamma-aminobutyrique (GABA). De
plus, à notre connaissance, aucun de ces études publiées n'est réalisée
avec une population d'étude composé uniquement d'adolescents autistes avec un" haut niveau de fonctionnement" (HFA) . La sélection
des seules personnes HFA élimine les facteurs pouvant être liés
à une déficience intellectuelle au lieu de TSA. Cette étude vise à évaluer les concentrations de neurotransmetteurs Glu et GABA dans l'HFA. Les concentrations
occipitales de Glu et de GABA, plus les macromolécules (GABA +) ont été
obtenues en utilisant l'1H-MRS par rapport à la créatine (Cr) chez des
adolescents avec HFA (n = 15 et n = 13 respectivement) et chez groupe
témoin sans HFA (n = 17). La
régression linéaire multiple a révélé des concentrations significativement plus élevées Glu
/ Cr et plus faibles de GABA +/GLU
dans le groupe HFA par rapport aux témoins.
Ces résultats impliquent que les niveaux asymétriques de neurotransmetteurs d'excitation et d'inhibition sont associés avec l'HFA chez les adolescents.
Previous studies have suggested that alterations in excitatory/inhibitory neurotransmitters might play a crucial role in autism spectrum disorder (ASD). Proton magnetic resonance spectroscopy (1H-MRS) can provide valuable information about abnormal brain metabolism and neurotransmitter concentrations. However, few 1H-MRS studies have been published on the imbalance of the two most abundant neurotransmitters in ASD: glutamate (Glu) and gamma-aminobutyric acid (GABA). Moreover, to our knowledge none of these published studies is performed with a study population consisting purely of high-functioning autism (HFA) adolescents. Selecting only individuals with HFA eliminates factors possibly related to intellectual impairment instead of ASD. This study aims to assess Glu and GABA neurotransmitter concentrations in HFA. Occipital concentrations of Glu and GABA plus macromolecules (GABA+) were obtained using 1H-MRS relative to creatine (Cr) in adolescents with HFA (n=15 and n=13 respectively) and a healthy control group (n=17). Multiple linear regression revealed significantly higher Glu/Cr and lower GABA+/Glu concentrations in the HFA group compared to the controls. These results imply that imbalanced neurotransmitter levels of excitation and inhibition are associated with HFA in adolescents.
Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.
dans le groupe HFA par rapport aux témoins.
Ces résultats impliquent que les niveaux asymétriques de neurotransmetteurs d'excitation et d'inhibition sont associés avec l'HFA chez les adolescents.
Previous studies have suggested that alterations in excitatory/inhibitory neurotransmitters might play a crucial role in autism spectrum disorder (ASD). Proton magnetic resonance spectroscopy (1H-MRS) can provide valuable information about abnormal brain metabolism and neurotransmitter concentrations. However, few 1H-MRS studies have been published on the imbalance of the two most abundant neurotransmitters in ASD: glutamate (Glu) and gamma-aminobutyric acid (GABA). Moreover, to our knowledge none of these published studies is performed with a study population consisting purely of high-functioning autism (HFA) adolescents. Selecting only individuals with HFA eliminates factors possibly related to intellectual impairment instead of ASD. This study aims to assess Glu and GABA neurotransmitter concentrations in HFA. Occipital concentrations of Glu and GABA plus macromolecules (GABA+) were obtained using 1H-MRS relative to creatine (Cr) in adolescents with HFA (n=15 and n=13 respectively) and a healthy control group (n=17). Multiple linear regression revealed significantly higher Glu/Cr and lower GABA+/Glu concentrations in the HFA group compared to the controls. These results imply that imbalanced neurotransmitter levels of excitation and inhibition are associated with HFA in adolescents.
Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.
- PMID: 27685800
- DOI: 10.1016/j.pscychresns.2016.09.007
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