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Auteur Blythe A. CORBETT |
Documents disponibles écrits par cet auteur (29)
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Salivary testosterone in male and female youth with and without autism spectrum disorder: considerations of development, sex, and diagnosis / Rachael A. MUSCATELLO in Molecular Autism, 13 (2022)
[article]
Titre : Salivary testosterone in male and female youth with and without autism spectrum disorder: considerations of development, sex, and diagnosis Type de document : Texte imprimé et/ou numérique Auteurs : Rachael A. MUSCATELLO, Auteur ; Emma RAFATJOO, Auteur ; Karan K. MIRPURI, Auteur ; Ahra KIM, Auteur ; Simon VANDEKAR, Auteur ; Blythe A. CORBETT, Auteur Article en page(s) : 37 p. Langues : Anglais (eng) Mots-clés : Autism Spectrum Disorder/diagnosis Autistic Disorder Female Humans Longitudinal Studies Male Sexual Development Testosterone Adolescence Androgen Autism Pubertal development Index. décimale : PER Périodiques Résumé : BACKGROUND: Puberty is characterized by significant physical, hormonal, and psychological changes, which may be especially challenging for individuals with autism spectrum disorder (ASD). Although the etiology of ASD remains uncertain, studies suggest imbalances in hormones, such as testosterone, may modulate the autism phenotype. While differences in fetal and postnatal testosterone have been reported, there is limited literature regarding testosterone variations during adolescence in ASD. We investigated morning salivary testosterone levels in youth with ASD and typical development (TD) to explore hypothesized differences, expecting elevated hormonal levels in ASD compared to TD. METHODS: Youth with ASD (n=140) and TD (n=104), ages 10 to 13Â years, were enrolled as part of a longitudinal study on pubertal development. Pubertal stage was determined by gold standard physical examination, and salivary testosterone was collected in the morning immediately upon waking and 30 min after waking and averaged across 3 days. Diagnostic (ASD/TD) and sex (male/female) differences, as well as interactions with age and puberty, were examined using robust linear mixed effect models. RESULTS: Youth with ASD showed significantly elevated testosterone concentrations compared to same-age TD peers. After the inclusion of natural cubic splines to account for nonlinearity in age, a significant age-by-sex interaction emerged with distinct developmental slopes for males and females. At younger ages, females had higher testosterone, until about 11.5Â years of age, when levels began to plateau, while male testosterone concentrations continued to rapidly increase and surpass females. As expected, more advanced pubertal development was associated with elevated testosterone. In contrast, no significant effect of parent-reported social communication symptoms was observed. LIMITATIONS: Limitations include an unequal sex distribution, non-representative sample (e.g., cognition and race/ethnicity), and inability to examine afternoon/evening testosterone due to detection limits. CONCLUSIONS: Testosterone may play a unique role in the presentation of ASD, especially during periods of dynamic hormonal changes including puberty. Inherent developmental (age, puberty) and sex-based (male, female) factors play a more prominent role in changes in testosterone levels during adolescence. Even so, future research is warranted to determine the differential expression and impact of exposure to excess testosterone during the pubertal transition for youth with ASD. En ligne : http://dx.doi.org/10.1186/s13229-022-00515-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=491
in Molecular Autism > 13 (2022) . - 37 p.[article] Salivary testosterone in male and female youth with and without autism spectrum disorder: considerations of development, sex, and diagnosis [Texte imprimé et/ou numérique] / Rachael A. MUSCATELLO, Auteur ; Emma RAFATJOO, Auteur ; Karan K. MIRPURI, Auteur ; Ahra KIM, Auteur ; Simon VANDEKAR, Auteur ; Blythe A. CORBETT, Auteur . - 37 p.
Langues : Anglais (eng)
in Molecular Autism > 13 (2022) . - 37 p.
Mots-clés : Autism Spectrum Disorder/diagnosis Autistic Disorder Female Humans Longitudinal Studies Male Sexual Development Testosterone Adolescence Androgen Autism Pubertal development Index. décimale : PER Périodiques Résumé : BACKGROUND: Puberty is characterized by significant physical, hormonal, and psychological changes, which may be especially challenging for individuals with autism spectrum disorder (ASD). Although the etiology of ASD remains uncertain, studies suggest imbalances in hormones, such as testosterone, may modulate the autism phenotype. While differences in fetal and postnatal testosterone have been reported, there is limited literature regarding testosterone variations during adolescence in ASD. We investigated morning salivary testosterone levels in youth with ASD and typical development (TD) to explore hypothesized differences, expecting elevated hormonal levels in ASD compared to TD. METHODS: Youth with ASD (n=140) and TD (n=104), ages 10 to 13Â years, were enrolled as part of a longitudinal study on pubertal development. Pubertal stage was determined by gold standard physical examination, and salivary testosterone was collected in the morning immediately upon waking and 30 min after waking and averaged across 3 days. Diagnostic (ASD/TD) and sex (male/female) differences, as well as interactions with age and puberty, were examined using robust linear mixed effect models. RESULTS: Youth with ASD showed significantly elevated testosterone concentrations compared to same-age TD peers. After the inclusion of natural cubic splines to account for nonlinearity in age, a significant age-by-sex interaction emerged with distinct developmental slopes for males and females. At younger ages, females had higher testosterone, until about 11.5Â years of age, when levels began to plateau, while male testosterone concentrations continued to rapidly increase and surpass females. As expected, more advanced pubertal development was associated with elevated testosterone. In contrast, no significant effect of parent-reported social communication symptoms was observed. LIMITATIONS: Limitations include an unequal sex distribution, non-representative sample (e.g., cognition and race/ethnicity), and inability to examine afternoon/evening testosterone due to detection limits. CONCLUSIONS: Testosterone may play a unique role in the presentation of ASD, especially during periods of dynamic hormonal changes including puberty. Inherent developmental (age, puberty) and sex-based (male, female) factors play a more prominent role in changes in testosterone levels during adolescence. Even so, future research is warranted to determine the differential expression and impact of exposure to excess testosterone during the pubertal transition for youth with ASD. En ligne : http://dx.doi.org/10.1186/s13229-022-00515-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=491 Sex differences in automatic emotion regulation in adolescents with autism spectrum disorder / Alexandra P. KEY in Autism Research, 15-4 (April 2022)
[article]
Titre : Sex differences in automatic emotion regulation in adolescents with autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Alexandra P. KEY, Auteur ; Dorita JONES, Auteur ; Blythe A. CORBETT, Auteur Article en page(s) : p.712-728 Langues : Anglais (eng) Mots-clés : Adolescent Autism Spectrum Disorder Child Emotional Regulation Emotions/physiology Evoked Potentials/physiology Facial Expression Female Humans Male Sex Characteristics autism emotion face inhibition sex target detection Index. décimale : PER Périodiques Résumé : Autism may be underdiagnosed in females because their social difficulties are often less noticeable. This study explored sex differences in automatic facial emotion processing in 45 adolescents with autism spectrum disorder (22 female, 23 male), age 10-16?years, performing active target detection task and Go/NoGo tasks where faces with positive and negative emotional expressions served as irrelevant distractors. The combined sample demonstrated more accurate performance on the target detection (response initiation) than the Go/NoGo task (response inhibition), replicating findings previously reported in typical participants. Females exhibited greater difficulty than males with response initiation in the target detection task, especially in the context of angry faces, while males found withholding a response in the Go/NoGo block with happy faces more challenging. Electrophysiological data revealed no sex differences or emotion discrimination effects during the early perceptual processing of faces indexed by the occipitotemporal N170. Autistic males demonstrated increased frontal N2 and parietal P3 amplitudes compared to females, suggesting greater neural resource allocation to automatic emotion regulation processes. The associations between standardized behavioral measures (autism severity, theory of mind skills) and brain responses also varied by sex: more adaptive social functioning was related to the speed of perceptual processing (N170 latency) in females and the extent of deliberate attention allocation (P3 amplitudes) in males. Together, these findings suggest that males and females with autism may rely on different strategies for social functioning and highlight the importance of considering sex differences in autism. LAY SUMMARY: Females with autism may exhibit less noticeable social difficulties than males. This study demonstrates that autistic females are more successful than males at inhibiting behavioral responses in emotional contexts, while males are more likely to initiate a response. At the neural level, social functioning in females is related to the speed of automatic perceptual processing of facial cues, and in males, to the extent of active attention allocation to the stimuli. These findings highlight the importance of considering sex differences in autism diagnosis and treatment selection. En ligne : https://dx.doi.org/10.1002/aur.2678 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=473
in Autism Research > 15-4 (April 2022) . - p.712-728[article] Sex differences in automatic emotion regulation in adolescents with autism spectrum disorder [Texte imprimé et/ou numérique] / Alexandra P. KEY, Auteur ; Dorita JONES, Auteur ; Blythe A. CORBETT, Auteur . - p.712-728.
Langues : Anglais (eng)
in Autism Research > 15-4 (April 2022) . - p.712-728
Mots-clés : Adolescent Autism Spectrum Disorder Child Emotional Regulation Emotions/physiology Evoked Potentials/physiology Facial Expression Female Humans Male Sex Characteristics autism emotion face inhibition sex target detection Index. décimale : PER Périodiques Résumé : Autism may be underdiagnosed in females because their social difficulties are often less noticeable. This study explored sex differences in automatic facial emotion processing in 45 adolescents with autism spectrum disorder (22 female, 23 male), age 10-16?years, performing active target detection task and Go/NoGo tasks where faces with positive and negative emotional expressions served as irrelevant distractors. The combined sample demonstrated more accurate performance on the target detection (response initiation) than the Go/NoGo task (response inhibition), replicating findings previously reported in typical participants. Females exhibited greater difficulty than males with response initiation in the target detection task, especially in the context of angry faces, while males found withholding a response in the Go/NoGo block with happy faces more challenging. Electrophysiological data revealed no sex differences or emotion discrimination effects during the early perceptual processing of faces indexed by the occipitotemporal N170. Autistic males demonstrated increased frontal N2 and parietal P3 amplitudes compared to females, suggesting greater neural resource allocation to automatic emotion regulation processes. The associations between standardized behavioral measures (autism severity, theory of mind skills) and brain responses also varied by sex: more adaptive social functioning was related to the speed of perceptual processing (N170 latency) in females and the extent of deliberate attention allocation (P3 amplitudes) in males. Together, these findings suggest that males and females with autism may rely on different strategies for social functioning and highlight the importance of considering sex differences in autism. LAY SUMMARY: Females with autism may exhibit less noticeable social difficulties than males. This study demonstrates that autistic females are more successful than males at inhibiting behavioral responses in emotional contexts, while males are more likely to initiate a response. At the neural level, social functioning in females is related to the speed of automatic perceptual processing of facial cues, and in males, to the extent of active attention allocation to the stimuli. These findings highlight the importance of considering sex differences in autism diagnosis and treatment selection. En ligne : https://dx.doi.org/10.1002/aur.2678 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=473 Social context in stress and autism: comparing physiological profiles across two social paradigms in youth with and without autism spectrum disorder / Rachael A. MUSCATELLO in Research in Autism Spectrum Disorders, 112 (April 2024)
[article]
Titre : Social context in stress and autism: comparing physiological profiles across two social paradigms in youth with and without autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Rachael A. MUSCATELLO, Auteur ; Trey MCGONIGLE, Auteur ; Simon VANDEKAR, Auteur ; Blythe A. CORBETT, Auteur Article en page(s) : p.102354 Langues : Anglais (eng) Mots-clés : Autism Heart rate Cortisol Social Stress Interaction Index. décimale : PER Périodiques Résumé : Background The social world is often stressful for individuals with autism spectrum disorder (ASD). Research shows youth with ASD demonstrate physiological hyperreactivity to some social stressors (e.g., interaction) but not others (e.g., evaluation); therefore, this study examined diagnosis (ASD or typical development (TD)), social context, perceived anxiety, and physiological responsivity across multiple stress systems; namely, the hypothalamic pituitary adrenal (HPA) axis and autonomic nervous system (ANS). Method This study examined 244 ten-to-thirteen-year-olds with ASD (N = 140) or TD (N = 104). Physiological responses, measured by salivary cortisol, heart rate (HR), and respiratory sinus arrhythmia (RSA), were assessed before and after a social evaluative threat paradigm (Trier Social Stress Test; TSST) and social interaction (Trier Social Stress Test- Friendly; TSST-F). Mediation models examined the relationships between anxiety, diagnosis, and physiology. Results Significant three-way interactions were observed for cortisol (p = 0.007) and HR (p = 0.002), suggesting diagnostic groups respond differently across context and time points. There was no significant interaction for RSA (p = 0.149), although ASD youth had significantly lower RSA overall (p = 0.038). State and trait anxiety did not mediate the relationship between diagnosis and physiology (all p > 0.05). Conclusions Findings emphasize the critical role of context and a multisystem approach in examination of physiological social stress in youth with ASD. Results provide a foundation to elucidate unique response patterns across physiological systems to more precisely identify those with heightened physiological arousal across social contexts. It is proposed that future identification of subtypes may ultimately inform approaches for enhancing social engagement. En ligne : https://doi.org/10.1016/j.rasd.2024.102354 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=524
in Research in Autism Spectrum Disorders > 112 (April 2024) . - p.102354[article] Social context in stress and autism: comparing physiological profiles across two social paradigms in youth with and without autism spectrum disorder [Texte imprimé et/ou numérique] / Rachael A. MUSCATELLO, Auteur ; Trey MCGONIGLE, Auteur ; Simon VANDEKAR, Auteur ; Blythe A. CORBETT, Auteur . - p.102354.
Langues : Anglais (eng)
in Research in Autism Spectrum Disorders > 112 (April 2024) . - p.102354
Mots-clés : Autism Heart rate Cortisol Social Stress Interaction Index. décimale : PER Périodiques Résumé : Background The social world is often stressful for individuals with autism spectrum disorder (ASD). Research shows youth with ASD demonstrate physiological hyperreactivity to some social stressors (e.g., interaction) but not others (e.g., evaluation); therefore, this study examined diagnosis (ASD or typical development (TD)), social context, perceived anxiety, and physiological responsivity across multiple stress systems; namely, the hypothalamic pituitary adrenal (HPA) axis and autonomic nervous system (ANS). Method This study examined 244 ten-to-thirteen-year-olds with ASD (N = 140) or TD (N = 104). Physiological responses, measured by salivary cortisol, heart rate (HR), and respiratory sinus arrhythmia (RSA), were assessed before and after a social evaluative threat paradigm (Trier Social Stress Test; TSST) and social interaction (Trier Social Stress Test- Friendly; TSST-F). Mediation models examined the relationships between anxiety, diagnosis, and physiology. Results Significant three-way interactions were observed for cortisol (p = 0.007) and HR (p = 0.002), suggesting diagnostic groups respond differently across context and time points. There was no significant interaction for RSA (p = 0.149), although ASD youth had significantly lower RSA overall (p = 0.038). State and trait anxiety did not mediate the relationship between diagnosis and physiology (all p > 0.05). Conclusions Findings emphasize the critical role of context and a multisystem approach in examination of physiological social stress in youth with ASD. Results provide a foundation to elucidate unique response patterns across physiological systems to more precisely identify those with heightened physiological arousal across social contexts. It is proposed that future identification of subtypes may ultimately inform approaches for enhancing social engagement. En ligne : https://doi.org/10.1016/j.rasd.2024.102354 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=524 Verbal ability, social stress, and anxiety in children with Autistic Disorder / Kimberly E. LANNI in Autism, 16-2 (March 2012)
[article]
Titre : Verbal ability, social stress, and anxiety in children with Autistic Disorder Type de document : Texte imprimé et/ou numérique Auteurs : Kimberly E. LANNI, Auteur ; Clayton W. SCHUPP, Auteur ; David SIMON, Auteur ; Blythe A. CORBETT, Auteur Année de publication : 2012 Article en page(s) : p.123-138 Langues : Anglais (eng) Mots-clés : Autism cortisol stress anxiety Trier social stress test verbal ability Index. décimale : PER Périodiques Résumé : The aims of this study were to evaluate the physiological stress and anxiety responses in children with autism following completion of a standardized, social-evaluative stressor (Trier Social Stress Test-Child version), document the relationship between verbal ability, stress, and anxiety, and determine the association between stress and anxiety in children with autism and typical development. Results demonstrated the Trier Social Stress Test-Child version to be a benign stressor for children with autism. Lower verbal ability in children with autism did not predict salivary cortisol or anxiety responses. There was a lack of association between stress andanxiety for both groups, highlighting the importance of considering these terms as separate constructs. Clinical implications and the limited utility of the Trier Social Stress Test–Child version in evaluating psychosocial stress in autism are discussed. En ligne : http://dx.doi.org/10.1177/1362361311425916 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=155
in Autism > 16-2 (March 2012) . - p.123-138[article] Verbal ability, social stress, and anxiety in children with Autistic Disorder [Texte imprimé et/ou numérique] / Kimberly E. LANNI, Auteur ; Clayton W. SCHUPP, Auteur ; David SIMON, Auteur ; Blythe A. CORBETT, Auteur . - 2012 . - p.123-138.
Langues : Anglais (eng)
in Autism > 16-2 (March 2012) . - p.123-138
Mots-clés : Autism cortisol stress anxiety Trier social stress test verbal ability Index. décimale : PER Périodiques Résumé : The aims of this study were to evaluate the physiological stress and anxiety responses in children with autism following completion of a standardized, social-evaluative stressor (Trier Social Stress Test-Child version), document the relationship between verbal ability, stress, and anxiety, and determine the association between stress and anxiety in children with autism and typical development. Results demonstrated the Trier Social Stress Test-Child version to be a benign stressor for children with autism. Lower verbal ability in children with autism did not predict salivary cortisol or anxiety responses. There was a lack of association between stress andanxiety for both groups, highlighting the importance of considering these terms as separate constructs. Clinical implications and the limited utility of the Trier Social Stress Test–Child version in evaluating psychosocial stress in autism are discussed. En ligne : http://dx.doi.org/10.1177/1362361311425916 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=155