Anatomy and aging of the amygdala and hippocampus in autism spectrum disorder: an in vivo magnetic resonance imaging study of Asperger syndrome / Clodagh M. MURPHY in Autism Research, 5-1 (February 2012)  

Public ISBD [article]  inAutism Research > 5-1 (February 2012) . - p.3-12 Titre : Anatomy and aging of the amygdala and hippocampus in autism spectrum disorder: an in vivo magnetic resonance imaging study of Asperger syndrome Type de document : Texte imprimé et/ou numérique Auteurs : Clodagh M. MURPHY, Auteur ; Quinton DEELEY, Auteur ; Eileen DALY, Auteur ; Christine ECKER, Auteur ; F. M. O'BRIEN, Auteur ; B. HALLAHAN, Auteur ; Eva LOTH, Auteur ; F. TOAL, Auteur ; S. REED, Auteur ; S. HALES, Auteur ; D. M. ROBERTSON, Auteur ; Michael C. CRAIG, Auteur ; D. MULLINS, Auteur ; Gareth J. BARKER, Auteur ; T. LAVENDER, Auteur ; P. JOHNSTON, Auteur ; Kieran C. MURPHY, Auteur ; Declan G. MURPHY, Auteur Année de publication : 2012 Article en page(s) : p.3-12 Langues : Anglais (eng) Mots-clés : Asperger syndrome  autism  amygdala  hippocampus  age Index. décimale : PER Périodiques Résumé : It has been proposed that people with autism spectrum disorder (ASD) have abnormal morphometry and development of the amygdala and hippocampus (AH). However, previous reports are inconsistent, perhaps because they included people of different ASD diagnoses, ages, and health. We compared, using magnetic resonance imaging, the in vivo anatomy of the AH in 32 healthy individuals with Asperger syndrome (12–47 years) and 32 healthy controls who did not differ significantly in age or IQ. We measured bulk (gray + white matter) volume of the AH using manual tracing (MEASURE). We first compared the volume of AH between individuals with Asperger syndrome and controls and then investigated age-related differences. We compared differences in anatomy before, and after, correcting for whole brain size. There was no significant between group differences in whole brain volume. However, individuals with Asperger syndrome had a significantly larger raw bulk volume of total (P<0.01), right (P<0.01), and left amygdala (P<0.05); and when corrected for overall brain size, total (P<0.05), and right amygdala (P<0.01). There was a significant group difference in aging of left amygdala; controls, but not individuals with Asperger syndrome, had a significant age-related increase in volume (r = 0.486, P<0.01, and r = 0.007, P = 0.97, z = 1.995). There were no significant group differences in volume or age-related effects in hippocampus. Individuals with Asperger syndrome have significant differences from controls in bulk volume and aging of the amygdala. En ligne : http://dx.doi.org/10.1002/aur.227 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=153 [article] Anatomy and aging of the amygdala and hippocampus in autism spectrum disorder: an in vivo magnetic resonance imaging study of Asperger syndrome [Texte imprimé et/ou numérique] / Clodagh M. MURPHY, Auteur ; Quinton DEELEY, Auteur ; Eileen DALY, Auteur ; Christine ECKER, Auteur ; F. M. O'BRIEN, Auteur ; B. HALLAHAN, Auteur ; Eva LOTH, Auteur ; F. TOAL, Auteur ; S. REED, Auteur ; S. HALES, Auteur ; D. M. ROBERTSON, Auteur ; Michael C. CRAIG, Auteur ; D. MULLINS, Auteur ; Gareth J. BARKER, Auteur ; T. LAVENDER, Auteur ; P. JOHNSTON, Auteur ; Kieran C. MURPHY, Auteur ; Declan G. MURPHY, Auteur . - 2012 . - p.3-12. Langues : Anglais (eng) in Autism Research > 5-1 (February 2012) . - p.3-12 Mots-clés : Asperger syndrome  autism  amygdala  hippocampus  age Index. décimale : PER Périodiques Résumé : It has been proposed that people with autism spectrum disorder (ASD) have abnormal morphometry and development of the amygdala and hippocampus (AH). However, previous reports are inconsistent, perhaps because they included people of different ASD diagnoses, ages, and health. We compared, using magnetic resonance imaging, the in vivo anatomy of the AH in 32 healthy individuals with Asperger syndrome (12–47 years) and 32 healthy controls who did not differ significantly in age or IQ. We measured bulk (gray + white matter) volume of the AH using manual tracing (MEASURE). We first compared the volume of AH between individuals with Asperger syndrome and controls and then investigated age-related differences. We compared differences in anatomy before, and after, correcting for whole brain size. There was no significant between group differences in whole brain volume. However, individuals with Asperger syndrome had a significantly larger raw bulk volume of total (P<0.01), right (P<0.01), and left amygdala (P<0.05); and when corrected for overall brain size, total (P<0.05), and right amygdala (P<0.01). There was a significant group difference in aging of left amygdala; controls, but not individuals with Asperger syndrome, had a significant age-related increase in volume (r = 0.486, P<0.01, and r = 0.007, P = 0.97, z = 1.995). There were no significant group differences in volume or age-related effects in hippocampus. Individuals with Asperger syndrome have significant differences from controls in bulk volume and aging of the amygdala. En ligne : http://dx.doi.org/10.1002/aur.227 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=153

Erratum : White matter integrity in Asperger syndrome: A preliminary diffusion tensor magnetic resonance imaging study in adults / Oswald J.N. BLOEMEN in Autism Research, 4-2 (April 2011)  

Public ISBD [article]  inAutism Research > 4-2 (April 2011) . - p.160 Titre : Erratum : White matter integrity in Asperger syndrome: A preliminary diffusion tensor magnetic resonance imaging study in adults Type de document : Texte imprimé et/ou numérique Auteurs : Oswald J.N. BLOEMEN, Auteur ; Quinton DEELEY, Auteur ; Fred SUNDRAM, Auteur ; Eileen DALY, Auteur ; Gareth J. BARKER, Auteur ; Derek K. JONES, Auteur ; Therese A.M.J. VAN AMELSVOORT, Auteur ; Nicole SCHMITZ, Auteur ; Dene ROBERTSON, Auteur ; Kieran C. MURPHY, Auteur ; Declan G. MURPHY, Auteur Année de publication : 2011 Article en page(s) : p.160 Langues : Anglais (eng) Index. décimale : PER Périodiques En ligne : http://dx.doi.org/10.1002/aur.189 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=121 [article] Erratum : White matter integrity in Asperger syndrome: A preliminary diffusion tensor magnetic resonance imaging study in adults [Texte imprimé et/ou numérique] / Oswald J.N. BLOEMEN, Auteur ; Quinton DEELEY, Auteur ; Fred SUNDRAM, Auteur ; Eileen DALY, Auteur ; Gareth J. BARKER, Auteur ; Derek K. JONES, Auteur ; Therese A.M.J. VAN AMELSVOORT, Auteur ; Nicole SCHMITZ, Auteur ; Dene ROBERTSON, Auteur ; Kieran C. MURPHY, Auteur ; Declan G. MURPHY, Auteur . - 2011 . - p.160. Langues : Anglais (eng) in Autism Research > 4-2 (April 2011) . - p.160 Index. décimale : PER Périodiques En ligne : http://dx.doi.org/10.1002/aur.189 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=121

White matter integrity in Asperger syndrome: a preliminary diffusion tensor magnetic resonance imaging study in adults / Oswald J.N. BLOEMEN in Autism Research, 3-5 (October 2010)  

Public ISBD [article]  inAutism Research > 3-5 (October 2010) . - p.203-213 Titre : White matter integrity in Asperger syndrome: a preliminary diffusion tensor magnetic resonance imaging study in adults Type de document : Texte imprimé et/ou numérique Auteurs : Oswald J.N. BLOEMEN, Auteur ; Quinton DEELEY, Auteur ; Fred SUNDRAM, Auteur ; Eileen DALY, Auteur ; Gareth J. BARKER, Auteur ; Derek K. JONES, Auteur ; Therese A.M.J. VAN AMELSVOORT, Auteur ; Nicole SCHMITZ, Auteur ; Dene ROBERTSON, Auteur ; Kieran C. MURPHY, Auteur ; Declan G. MURPHY, Auteur Année de publication : 2010 Article en page(s) : p.203-213 Langues : Anglais (eng) Mots-clés : autism  Asperger syndrome  white matter  DTI  connectivity Index. décimale : PER Périodiques Résumé : Background: Autistic Spectrum Disorder (ASD), including Asperger syndrome and autism, is a highly genetic neurodevelopmental disorder. There is a consensus that ASD has a biological basis, and it has been proposed that it is a “connectivity” disorder. Diffusion Tensor Magnetic Resonance Imaging (DT-MRI) allows measurement of the microstructural integrity of white matter (a proxy measure of “connectivity”). However, nobody has investigated the microstructural integrity of whole brain white matter in people with Asperger syndrome. Methods: We measured the fractional anisotropy (FA), mean diffusivity (MD) and radial diffusivity (RD) of white matter, using DT-MRI, in 13 adults with Asperger syndrome and 13 controls. The groups did not differ significantly in overall intelligence and age. FA, MD and RD were assessed using whole brain voxel-based techniques. Results: Adults with Asperger syndrome had a significantly lower FA than controls in 13 clusters. These were largely bilateral and included white matter in the internal capsule, frontal, temporal, parietal and occipital lobes, cingulum and corpus callosum. Conclusions: Adults with Asperger syndrome have widespread significant differences from controls in white matter microstructural integrity. En ligne : http://dx.doi.org/10.1002/aur.146 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=115 [article] White matter integrity in Asperger syndrome: a preliminary diffusion tensor magnetic resonance imaging study in adults [Texte imprimé et/ou numérique] / Oswald J.N. BLOEMEN, Auteur ; Quinton DEELEY, Auteur ; Fred SUNDRAM, Auteur ; Eileen DALY, Auteur ; Gareth J. BARKER, Auteur ; Derek K. JONES, Auteur ; Therese A.M.J. VAN AMELSVOORT, Auteur ; Nicole SCHMITZ, Auteur ; Dene ROBERTSON, Auteur ; Kieran C. MURPHY, Auteur ; Declan G. MURPHY, Auteur . - 2010 . - p.203-213. Langues : Anglais (eng) in Autism Research > 3-5 (October 2010) . - p.203-213 Mots-clés : autism  Asperger syndrome  white matter  DTI  connectivity Index. décimale : PER Périodiques Résumé : Background: Autistic Spectrum Disorder (ASD), including Asperger syndrome and autism, is a highly genetic neurodevelopmental disorder. There is a consensus that ASD has a biological basis, and it has been proposed that it is a “connectivity” disorder. Diffusion Tensor Magnetic Resonance Imaging (DT-MRI) allows measurement of the microstructural integrity of white matter (a proxy measure of “connectivity”). However, nobody has investigated the microstructural integrity of whole brain white matter in people with Asperger syndrome. Methods: We measured the fractional anisotropy (FA), mean diffusivity (MD) and radial diffusivity (RD) of white matter, using DT-MRI, in 13 adults with Asperger syndrome and 13 controls. The groups did not differ significantly in overall intelligence and age. FA, MD and RD were assessed using whole brain voxel-based techniques. Results: Adults with Asperger syndrome had a significantly lower FA than controls in 13 clusters. These were largely bilateral and included white matter in the internal capsule, frontal, temporal, parietal and occipital lobes, cingulum and corpus callosum. Conclusions: Adults with Asperger syndrome have widespread significant differences from controls in white matter microstructural integrity. En ligne : http://dx.doi.org/10.1002/aur.146 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=115

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