Brain glutathione and GABA+ levels in autistic children / Yulu SONG in Autism Research, 17-3 (March 2024)  

Public ISBD [article]  inAutism Research > 17-3 (March 2024) . - p.512-528 Titre : Brain glutathione and GABA+ levels in autistic children Type de document : Texte imprimé et/ou numérique Auteurs : Yulu SONG, Auteur ; Kathleen E. HUPFELD, Auteur ; Christopher W. DAVIES-JENKINS, Auteur ; Helge J. ZÖLLNER, Auteur ; Saipavitra MURALI-MANOHAR, Auteur ; Abdul Nashirudeen MUMUNI, Auteur ; Deana CROCETTI, Auteur ; Vivek YEDAVALLI, Auteur ; Georg OELTZSCHNER, Auteur ; Natalie ALESSI, Auteur ; Mitchell A. BATSCHELETT, Auteur ; Nicolaas A. J. PUTS, Auteur ; Stewart H. MOSTOFSKY, Auteur ; Richard A. E. EDDEN, Auteur Article en page(s) : p.512-528 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : Abstract Autism spectrum disorder (ASD) is a neurodevelopmental condition characterized by social communication challenges and repetitive behaviors. Altered neurometabolite levels, including glutathione (GSH) and gamma-aminobutyric acid (GABA), have been proposed as potential contributors to the biology underlying ASD. This study investigated whether cerebral GSH or GABA levels differ between a cohort of children aged 8-12?years with ASD (n = 52) and typically developing children (TDC, n = 49). A comprehensive analysis of GSH and GABA levels in multiple brain regions, including the primary motor cortex (SM1), thalamus (Thal), medial prefrontal cortex (mPFC), and supplementary motor area (SMA), was conducted using single-voxel HERMES MR spectroscopy at 3T. The results revealed no significant differences in cerebral GSH or GABA levels between the ASD and TDC groups across all examined regions. These findings suggest that the concentrations of GSH (an important antioxidant and neuromodulator) and GABA (a major inhibitory neurotransmitter) do not exhibit marked alterations in children with ASD compared to TDC. A statistically significant positive correlation was observed between GABA levels in the SM1 and Thal regions with ADHD inattention scores. No significant correlation was found between metabolite levels and hyper/impulsive scores of ADHD, measures of core ASD symptoms (ADOS-2, SRS-P) or adaptive behavior (ABAS-2). While both GSH and GABA have been implicated in various neurological disorders, the current study provides valuable insights into the specific context of ASD and highlights the need for further research to explore other neurochemical alterations that may contribute to the pathophysiology of this complex disorder. En ligne : https://doi.org/10.1002/aur.3097 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=525 [article] Brain glutathione and GABA+ levels in autistic children [Texte imprimé et/ou numérique] / Yulu SONG, Auteur ; Kathleen E. HUPFELD, Auteur ; Christopher W. DAVIES-JENKINS, Auteur ; Helge J. ZÖLLNER, Auteur ; Saipavitra MURALI-MANOHAR, Auteur ; Abdul Nashirudeen MUMUNI, Auteur ; Deana CROCETTI, Auteur ; Vivek YEDAVALLI, Auteur ; Georg OELTZSCHNER, Auteur ; Natalie ALESSI, Auteur ; Mitchell A. BATSCHELETT, Auteur ; Nicolaas A. J. PUTS, Auteur ; Stewart H. MOSTOFSKY, Auteur ; Richard A. E. EDDEN, Auteur . - p.512-528. Langues : Anglais (eng) in Autism Research > 17-3 (March 2024) . - p.512-528 Index. décimale : PER Périodiques Résumé : Abstract Autism spectrum disorder (ASD) is a neurodevelopmental condition characterized by social communication challenges and repetitive behaviors. Altered neurometabolite levels, including glutathione (GSH) and gamma-aminobutyric acid (GABA), have been proposed as potential contributors to the biology underlying ASD. This study investigated whether cerebral GSH or GABA levels differ between a cohort of children aged 8-12?years with ASD (n = 52) and typically developing children (TDC, n = 49). A comprehensive analysis of GSH and GABA levels in multiple brain regions, including the primary motor cortex (SM1), thalamus (Thal), medial prefrontal cortex (mPFC), and supplementary motor area (SMA), was conducted using single-voxel HERMES MR spectroscopy at 3T. The results revealed no significant differences in cerebral GSH or GABA levels between the ASD and TDC groups across all examined regions. These findings suggest that the concentrations of GSH (an important antioxidant and neuromodulator) and GABA (a major inhibitory neurotransmitter) do not exhibit marked alterations in children with ASD compared to TDC. A statistically significant positive correlation was observed between GABA levels in the SM1 and Thal regions with ADHD inattention scores. No significant correlation was found between metabolite levels and hyper/impulsive scores of ADHD, measures of core ASD symptoms (ADOS-2, SRS-P) or adaptive behavior (ABAS-2). While both GSH and GABA have been implicated in various neurological disorders, the current study provides valuable insights into the specific context of ASD and highlights the need for further research to explore other neurochemical alterations that may contribute to the pathophysiology of this complex disorder. En ligne : https://doi.org/10.1002/aur.3097 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=525

Could Sensory Differences Be a Sex-Indifferent Biomarker of Autism? Early Investigation Comparing Tactile Sensitivity Between Autistic Males and Females / Ericka L. WODKA ; Richard A. E. EDDEN ; Stewart H. MOSTOFSKY ; Nicolaas A. J. PUTS ; Jason L. HE in Journal of Autism and Developmental Disorders, 54-1 (January 2024)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 54-1 (January 2024) . - p.239-255 Titre : Could Sensory Differences Be a Sex-Indifferent Biomarker of Autism? Early Investigation Comparing Tactile Sensitivity Between Autistic Males and Females Type de document : Texte imprimé et/ou numérique Auteurs : Ericka L. WODKA, Auteur ; Richard A. E. EDDEN, Auteur ; Stewart H. MOSTOFSKY, Auteur ; Nicolaas A. J. PUTS, Auteur ; Jason L. HE, Auteur Article en page(s) : p.239-255 Index. décimale : PER Périodiques Résumé : Sensory differences are highly prevalent in autistic individuals. However, few studies have compared their presentation between autistic males and autistic females. We used psychophysics to assess and compare tactile perceptual sensitivity between autistic and non-autistic boys and girls aged between 8 and 12 years of age. While there were sex-differences of amplitude discrimination, frequency discrimination and order judgement thresholds, these sex-differences were not autism-specific. Mean RTs and detection thresholds were elevated in autism but were comparable between the sexes. Tactile sensitivity measures that are elevated in autism but are otherwise comparable between autistic males and autistic females suggest the possibility that certain sensory features could be used as sex-indifferent markers of autism. Further investigation with larger and more representative samples should be conducted before any stronger conclusions are made. En ligne : https://doi.org/10.1007/s10803-022-05787-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=520 [article] Could Sensory Differences Be a Sex-Indifferent Biomarker of Autism? Early Investigation Comparing Tactile Sensitivity Between Autistic Males and Females [Texte imprimé et/ou numérique] / Ericka L. WODKA, Auteur ; Richard A. E. EDDEN, Auteur ; Stewart H. MOSTOFSKY, Auteur ; Nicolaas A. J. PUTS, Auteur ; Jason L. HE, Auteur . - p.239-255. in Journal of Autism and Developmental Disorders > 54-1 (January 2024) . - p.239-255 Index. décimale : PER Périodiques Résumé : Sensory differences are highly prevalent in autistic individuals. However, few studies have compared their presentation between autistic males and autistic females. We used psychophysics to assess and compare tactile perceptual sensitivity between autistic and non-autistic boys and girls aged between 8 and 12 years of age. While there were sex-differences of amplitude discrimination, frequency discrimination and order judgement thresholds, these sex-differences were not autism-specific. Mean RTs and detection thresholds were elevated in autism but were comparable between the sexes. Tactile sensitivity measures that are elevated in autism but are otherwise comparable between autistic males and autistic females suggest the possibility that certain sensory features could be used as sex-indifferent markers of autism. Further investigation with larger and more representative samples should be conducted before any stronger conclusions are made. En ligne : https://doi.org/10.1007/s10803-022-05787-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=520

Perceptual alterations in the relationship between sensory reactivity, intolerance of uncertainty, and anxiety in autistic children with and without ADHD / Helen J. Powell ; Jason L. HE ; Nermin Khalil ; Ericka L. WODKA ; Alyssa DeRonda ; Richard A. E. EDDEN ; Roma A. VASA ; Stewart H. MOSTOFSKY ; Nicolaas A. PUTS in Development and Psychopathology, 37-1 (February 2025)  

Public ISBD [article]  inDevelopment and Psychopathology > 37-1 (February 2025) . - p.16-28 Titre : Perceptual alterations in the relationship between sensory reactivity, intolerance of uncertainty, and anxiety in autistic children with and without ADHD : Development and Psychopathology Type de document : Texte imprimé et/ou numérique Auteurs : Helen J. Powell, Auteur ; Jason L. HE, Auteur ; Nermin Khalil, Auteur ; Ericka L. WODKA, Auteur ; Alyssa DeRonda, Auteur ; Richard A. E. EDDEN, Auteur ; Roma A. VASA, Auteur ; Stewart H. MOSTOFSKY, Auteur ; Nicolaas A. PUTS, Auteur Article en page(s) : p.16-28 Langues : Anglais (eng) Mots-clés : anxiety  autism  intolerance of uncertainty  perception  sensory Index. décimale : PER Périodiques Résumé : Sensory differences and anxiety disorders are highly prevalent in autistic individuals with and without ADHD. Studies have shown that sensory differences and anxiety are associated and that intolerance of uncertainty (IU) plays an important role in this relationship. However, it is unclear as to how different levels of the sensory processing pathway (i.e., perceptual, affective, or behavioral) contribute. Here, we used psychophysics to assess how alterations in tactile perception contribute to questionnaire measures of sensory reactivity, IU, and anxiety. Thirty-eight autistic children (aged 8-12 years; 27 with co-occurring ADHD) were included. Consistent with previous findings, mediation analyses showed that child-reported IU fully mediated an association between parent-reported sensory reactivity and parent-reported anxiety and that anxiety partially mediated an association between sensory reactivity and IU. Of the vibrotactile thresholds, only simultaneous frequency discrimination (SFD) thresholds correlated with sensory reactivity. Interestingly, we found that sensory reactivity fully mediated an association between SFD threshold and anxiety, and between SFD threshold and IU. Taken together, those findings suggest a mechanistic pathway whereby tactile perceptual alterations contribute to sensory reactivity at the affective level, leading in turn to increased IU and anxiety. This stepwise association can inform potential interventions for IU and anxiety in autism. En ligne : https://dx.doi.org/10.1017/S0954579423001360 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=546 [article] Perceptual alterations in the relationship between sensory reactivity, intolerance of uncertainty, and anxiety in autistic children with and without ADHD : Development and Psychopathology [Texte imprimé et/ou numérique] / Helen J. Powell, Auteur ; Jason L. HE, Auteur ; Nermin Khalil, Auteur ; Ericka L. WODKA, Auteur ; Alyssa DeRonda, Auteur ; Richard A. E. EDDEN, Auteur ; Roma A. VASA, Auteur ; Stewart H. MOSTOFSKY, Auteur ; Nicolaas A. PUTS, Auteur . - p.16-28. Langues : Anglais (eng) in Development and Psychopathology > 37-1 (February 2025) . - p.16-28 Mots-clés : anxiety  autism  intolerance of uncertainty  perception  sensory Index. décimale : PER Périodiques Résumé : Sensory differences and anxiety disorders are highly prevalent in autistic individuals with and without ADHD. Studies have shown that sensory differences and anxiety are associated and that intolerance of uncertainty (IU) plays an important role in this relationship. However, it is unclear as to how different levels of the sensory processing pathway (i.e., perceptual, affective, or behavioral) contribute. Here, we used psychophysics to assess how alterations in tactile perception contribute to questionnaire measures of sensory reactivity, IU, and anxiety. Thirty-eight autistic children (aged 8-12 years; 27 with co-occurring ADHD) were included. Consistent with previous findings, mediation analyses showed that child-reported IU fully mediated an association between parent-reported sensory reactivity and parent-reported anxiety and that anxiety partially mediated an association between sensory reactivity and IU. Of the vibrotactile thresholds, only simultaneous frequency discrimination (SFD) thresholds correlated with sensory reactivity. Interestingly, we found that sensory reactivity fully mediated an association between SFD threshold and anxiety, and between SFD threshold and IU. Taken together, those findings suggest a mechanistic pathway whereby tactile perceptual alterations contribute to sensory reactivity at the affective level, leading in turn to increased IU and anxiety. This stepwise association can inform potential interventions for IU and anxiety in autism. En ligne : https://dx.doi.org/10.1017/S0954579423001360 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=546

Reduced GABA and altered somatosensory function in children with autism spectrum disorder / Nicolaas A. J. PUTS in Autism Research, 10-4 (April 2017)  

Public ISBD [article]  inAutism Research > 10-4 (April 2017) . - p.608-619 Titre : Reduced GABA and altered somatosensory function in children with autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Nicolaas A. J. PUTS, Auteur ; Ericka L. WODKA, Auteur ; Ashley D. HARRIS, Auteur ; Deana CROCETTI, Auteur ; Mark TOMMERDAHL, Auteur ; Stewart H. MOSTOFSKY, Auteur ; Richard A. E. EDDEN, Auteur Article en page(s) : p.608-619 Langues : Anglais (eng) Mots-clés : autism  somatosensory  GABA  magnetic resonance spectroscopy  tactile  MRS  touch Index. décimale : PER Périodiques Résumé : Background: Abnormal responses to tactile stimuli are a common feature of autism spectrum disorder (ASD). Several lines of evidence suggest that GABAergic function, which has a crucial role in tactile processing, is altered in ASD. In this study, we determine whether in vivo GABA levels are altered in children with ASD, and whether alterations in GABA levels are associated with abnormal tactile function in these children. Methods: GABA-edited magnetic resonance spectroscopy was acquired in 37 children with Autism and 35 typically developing children (TDC) from voxels over primary sensorimotor and occipital cortices. Children performed tactile tasks previously shown to be altered in ASD, linked to inhibitory mechanisms. Detection threshold was measured with- and without the presence of a slowly increasing sub-threshold stimulus. Amplitude discrimination was measured with- and without the presence of an adapting stimulus, and frequency discrimination was measured. Results: Sensorimotor GABA levels were significantly reduced in children with autism compared to healthy controls. Occipital GABA levels were normal. Sensorimotor GABA levels correlated with dynamic detection threshold as well as with the effect of sub-threshold stimulation. Sensorimotor GABA levels also correlated with amplitude discrimination after adaptation (an effect absent in autism) and frequency discrimination in controls, but not in children with autism. Conclusions: GABA levels correlate with behavioral measures of inhibition. Children with autism have reduced GABA, associated with abnormalities in tactile performance. We show here that altered in vivo GABA levels might predict abnormal tactile information processing in ASD and that the GABA system may be a future target for therapies. En ligne : http://dx.doi.org/10.1002/aur.1691 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=307 [article] Reduced GABA and altered somatosensory function in children with autism spectrum disorder [Texte imprimé et/ou numérique] / Nicolaas A. J. PUTS, Auteur ; Ericka L. WODKA, Auteur ; Ashley D. HARRIS, Auteur ; Deana CROCETTI, Auteur ; Mark TOMMERDAHL, Auteur ; Stewart H. MOSTOFSKY, Auteur ; Richard A. E. EDDEN, Auteur . - p.608-619. Langues : Anglais (eng) in Autism Research > 10-4 (April 2017) . - p.608-619 Mots-clés : autism  somatosensory  GABA  magnetic resonance spectroscopy  tactile  MRS  touch Index. décimale : PER Périodiques Résumé : Background: Abnormal responses to tactile stimuli are a common feature of autism spectrum disorder (ASD). Several lines of evidence suggest that GABAergic function, which has a crucial role in tactile processing, is altered in ASD. In this study, we determine whether in vivo GABA levels are altered in children with ASD, and whether alterations in GABA levels are associated with abnormal tactile function in these children. Methods: GABA-edited magnetic resonance spectroscopy was acquired in 37 children with Autism and 35 typically developing children (TDC) from voxels over primary sensorimotor and occipital cortices. Children performed tactile tasks previously shown to be altered in ASD, linked to inhibitory mechanisms. Detection threshold was measured with- and without the presence of a slowly increasing sub-threshold stimulus. Amplitude discrimination was measured with- and without the presence of an adapting stimulus, and frequency discrimination was measured. Results: Sensorimotor GABA levels were significantly reduced in children with autism compared to healthy controls. Occipital GABA levels were normal. Sensorimotor GABA levels correlated with dynamic detection threshold as well as with the effect of sub-threshold stimulation. Sensorimotor GABA levels also correlated with amplitude discrimination after adaptation (an effect absent in autism) and frequency discrimination in controls, but not in children with autism. Conclusions: GABA levels correlate with behavioral measures of inhibition. Children with autism have reduced GABA, associated with abnormalities in tactile performance. We show here that altered in vivo GABA levels might predict abnormal tactile information processing in ASD and that the GABA system may be a future target for therapies. En ligne : http://dx.doi.org/10.1002/aur.1691 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=307

The Role of Attention in Somatosensory Processing: A Multi-trait, Multi-method Analysis / Ericka L. WODKA in Journal of Autism and Developmental Disorders, 46-10 (October 2016)  

Public ISBD [article]  inJournal of Autism and Developmental Disorders > 46-10 (October 2016) . - p.3232-3241 Titre : The Role of Attention in Somatosensory Processing: A Multi-trait, Multi-method Analysis Type de document : Texte imprimé et/ou numérique Auteurs : Ericka L. WODKA, Auteur ; Nicolaas A. J. PUTS, Auteur ; E. Mark MAHONE, Auteur ; Richard A. E. EDDEN, Auteur ; Mark TOMMERDAHL, Auteur ; Stewart H. MOSTOFSKY, Auteur Article en page(s) : p.3232-3241 Langues : Anglais (eng) Mots-clés : Autism  Sensory processing  Attention  Vibrotactile  Somatosensory Index. décimale : PER Périodiques Résumé : Sensory processing abnormalities in autism have largely been described by parent report. This study used a multi-method (parent-report and measurement), multi-trait (tactile sensitivity and attention) design to evaluate somatosensory processing in ASD. Results showed multiple significant within-method (e.g., parent report of different traits)/cross-trait (e.g., attention and tactile sensitivity) correlations, suggesting that parent-reported tactile sensory dysfunction and performance-based tactile sensitivity describe different behavioral phenomena. Additionally, both parent-reported tactile functioning and performance-based tactile sensitivity measures were significantly associated with measures of attention. Findings suggest that sensory (tactile) processing abnormalities in ASD are multifaceted, and may partially reflect a more global deficit in behavioral regulation (including attention). Challenges of relying solely on parent-report to describe sensory difficulties faced by children/families with ASD are also highlighted. En ligne : http://dx.doi.org/10.1007/s10803-016-2866-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=293 [article] The Role of Attention in Somatosensory Processing: A Multi-trait, Multi-method Analysis [Texte imprimé et/ou numérique] / Ericka L. WODKA, Auteur ; Nicolaas A. J. PUTS, Auteur ; E. Mark MAHONE, Auteur ; Richard A. E. EDDEN, Auteur ; Mark TOMMERDAHL, Auteur ; Stewart H. MOSTOFSKY, Auteur . - p.3232-3241. Langues : Anglais (eng) in Journal of Autism and Developmental Disorders > 46-10 (October 2016) . - p.3232-3241 Mots-clés : Autism  Sensory processing  Attention  Vibrotactile  Somatosensory Index. décimale : PER Périodiques Résumé : Sensory processing abnormalities in autism have largely been described by parent report. This study used a multi-method (parent-report and measurement), multi-trait (tactile sensitivity and attention) design to evaluate somatosensory processing in ASD. Results showed multiple significant within-method (e.g., parent report of different traits)/cross-trait (e.g., attention and tactile sensitivity) correlations, suggesting that parent-reported tactile sensory dysfunction and performance-based tactile sensitivity describe different behavioral phenomena. Additionally, both parent-reported tactile functioning and performance-based tactile sensitivity measures were significantly associated with measures of attention. Findings suggest that sensory (tactile) processing abnormalities in ASD are multifaceted, and may partially reflect a more global deficit in behavioral regulation (including attention). Challenges of relying solely on parent-report to describe sensory difficulties faced by children/families with ASD are also highlighted. En ligne : http://dx.doi.org/10.1007/s10803-016-2866-6 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=293

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