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Associations between social cognition, skills, and function and subclinical negative and positive symptoms in 22q11.2 deletion syndrome / A. VANGKILDE in Journal of Neurodevelopmental Disorders, 8-1 (December 2016)
[article]
Titre : Associations between social cognition, skills, and function and subclinical negative and positive symptoms in 22q11.2 deletion syndrome Type de document : Texte imprimé et/ou numérique Auteurs : A. VANGKILDE, Auteur ; Jens Richardt MØLLEGAARD JEPSEN, Auteur ; H. SCHMOCK, Auteur ; C. OLESEN, Auteur ; S. ARNARSDOTTIR, Auteur ; W. F. BAARE, Auteur ; K. J. PLESSEN, Auteur ; M. DIDRIKSEN, Auteur ; H. R. SIEBNER, Auteur ; T. WERGE, Auteur ; L. OLSEN, Auteur Article en page(s) : p.42 Langues : Anglais (eng) Mots-clés : 22q11 deletion syndrome Emotional recognition task Negative symptoms Positive symptoms Schizophrenia Social cognition Social function Social skills Theory of mind Index. décimale : PER Périodiques Résumé : BACKGROUND: Identification of the early signs of schizophrenia would be a major achievement for the early intervention and prevention strategies in psychiatry. Social impairments are defining features of schizophrenia. Impairments of individual layers of social competencies are frequently described in individuals with 22q11.2 deletion syndrome (22q11.2DS), who have high risk of schizophrenia. It is unclear whether and to what extent social impairments associate with subclinical negative and positive symptoms in 22q11.2DS, and which layer of social impairments are more correlated with schizophrenia-related symptoms. The aims of this study were to conduct a comprehensive investigation of social impairments at three different levels (function, skill, and cognition) and their interrelationship and to determine to what degree the social impairments correlate to subclinical levels of negative and positive symptoms, respectively, in a young cohort of 22q11.2DS not diagnosed with schizophrenia. METHODS: The level of social impairment was addressed using questionnaires and objective measures of social functioning (The Adaptive Behavior Assessment System), skills (Social Responsiveness Scale), and cognition (The Awareness of Social Inference Test and CANTAB Emotional Recognition Task), and the presence of subclinical symptoms of schizophrenia were evaluated using the Structured Interview for Prodromal Syndromes in a cross-sectional case-control study of 29 cases and 29 controls, aged 12 to 25 years. Association between social impairment and negative and positive symptoms levels was examined in cases only. RESULTS: Subjects with 22q11.2DS were highly impaired in social function, social skills, and social cognition (p = 6.2 x 10(-9)) relative to control peers and presented with more negative (p = 5.8 x 10(-11)) and positive (p = 7.5 x 10(-4)) symptoms. In particular, social functional and skill levels were highly associated with notably subclinical negative symptoms levels. CONCLUSIONS: This study shows strong correlations between levels of social impairments and subclinical negative and positive symptoms. However, longitudinal studies are required to show if social impairments represent early disease manifestations. If parental or self-reporting suggests severe social impairment, it should advocate for clinical awareness not only to social deficits per se but also of potential subclinical psychosis symptoms. En ligne : http://dx.doi.org/10.1186/s11689-016-9175-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=349
in Journal of Neurodevelopmental Disorders > 8-1 (December 2016) . - p.42[article] Associations between social cognition, skills, and function and subclinical negative and positive symptoms in 22q11.2 deletion syndrome [Texte imprimé et/ou numérique] / A. VANGKILDE, Auteur ; Jens Richardt MØLLEGAARD JEPSEN, Auteur ; H. SCHMOCK, Auteur ; C. OLESEN, Auteur ; S. ARNARSDOTTIR, Auteur ; W. F. BAARE, Auteur ; K. J. PLESSEN, Auteur ; M. DIDRIKSEN, Auteur ; H. R. SIEBNER, Auteur ; T. WERGE, Auteur ; L. OLSEN, Auteur . - p.42.
Langues : Anglais (eng)
in Journal of Neurodevelopmental Disorders > 8-1 (December 2016) . - p.42
Mots-clés : 22q11 deletion syndrome Emotional recognition task Negative symptoms Positive symptoms Schizophrenia Social cognition Social function Social skills Theory of mind Index. décimale : PER Périodiques Résumé : BACKGROUND: Identification of the early signs of schizophrenia would be a major achievement for the early intervention and prevention strategies in psychiatry. Social impairments are defining features of schizophrenia. Impairments of individual layers of social competencies are frequently described in individuals with 22q11.2 deletion syndrome (22q11.2DS), who have high risk of schizophrenia. It is unclear whether and to what extent social impairments associate with subclinical negative and positive symptoms in 22q11.2DS, and which layer of social impairments are more correlated with schizophrenia-related symptoms. The aims of this study were to conduct a comprehensive investigation of social impairments at three different levels (function, skill, and cognition) and their interrelationship and to determine to what degree the social impairments correlate to subclinical levels of negative and positive symptoms, respectively, in a young cohort of 22q11.2DS not diagnosed with schizophrenia. METHODS: The level of social impairment was addressed using questionnaires and objective measures of social functioning (The Adaptive Behavior Assessment System), skills (Social Responsiveness Scale), and cognition (The Awareness of Social Inference Test and CANTAB Emotional Recognition Task), and the presence of subclinical symptoms of schizophrenia were evaluated using the Structured Interview for Prodromal Syndromes in a cross-sectional case-control study of 29 cases and 29 controls, aged 12 to 25 years. Association between social impairment and negative and positive symptoms levels was examined in cases only. RESULTS: Subjects with 22q11.2DS were highly impaired in social function, social skills, and social cognition (p = 6.2 x 10(-9)) relative to control peers and presented with more negative (p = 5.8 x 10(-11)) and positive (p = 7.5 x 10(-4)) symptoms. In particular, social functional and skill levels were highly associated with notably subclinical negative symptoms levels. CONCLUSIONS: This study shows strong correlations between levels of social impairments and subclinical negative and positive symptoms. However, longitudinal studies are required to show if social impairments represent early disease manifestations. If parental or self-reporting suggests severe social impairment, it should advocate for clinical awareness not only to social deficits per se but also of potential subclinical psychosis symptoms. En ligne : http://dx.doi.org/10.1186/s11689-016-9175-4 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=349 Neural correlates of reward processing in adults with 22q11 deletion syndrome / E. D. A. VAN DUIN in Journal of Neurodevelopmental Disorders, 8-1 (December 2016)
[article]
Titre : Neural correlates of reward processing in adults with 22q11 deletion syndrome Type de document : Texte imprimé et/ou numérique Auteurs : E. D. A. VAN DUIN, Auteur ; L. GOOSSENS, Auteur ; D. HERNAUS, Auteur ; F. DA SILVA ALVES, Auteur ; N. SCHMITZ, Auteur ; K. SCHRUERS, Auteur ; T. VAN AMELSVOORT, Auteur Article en page(s) : p.25 Langues : Anglais (eng) Mots-clés : 22q11 deletion syndrome Comt Psychosis Reward Index. décimale : PER Périodiques Résumé : BACKGROUND: 22q11.2 deletion syndrome (22q11DS) is caused by a microdeletion on chromosome 22q11.2 and associated with an increased risk to develop psychosis. The gene coding for catechol-O-methyl-transferase (COMT) is located at the deleted region, resulting in disrupted dopaminergic neurotransmission in 22q11DS, which may contribute to the increased vulnerability for psychosis. A dysfunctional motivational reward system is considered one of the salient features in psychosis and thought to be related to abnormal dopaminergic neurotransmission. The functional anatomy of the brain reward circuitry has not yet been investigated in 22q11DS. METHODS: This study aims to investigate neural activity during anticipation of reward and loss in adult patients with 22q11DS. We measured blood-oxygen-level dependent (BOLD) activity in 16 patients with 22q11DS and 12 healthy controls during a monetary incentive delay task using a 3T Philips Intera MRI system. Data were analysed using SPM8. RESULTS: During anticipation of reward, the 22q11DS group alone displayed significant activation in bilateral middle frontal and temporal brain regions. Compared to healthy controls, significantly less activation in bilateral cingulate gyrus extending to premotor, primary motor and somatosensory areas was found. During anticipation of loss, the 22q11DS group displayed activity in the left middle frontal gyrus and anterior cingulate cortex, and relative to controls, they showed reduced brain activation in bilateral (pre)cuneus and left posterior cingulate. Within the 22q11DS group, COMT Val hemizygotes displayed more activation compared to Met hemizygotes in right posterior cingulate and bilateral parietal regions during anticipation of reward. During anticipation of loss, COMT Met hemizygotes compared to Val hemizygotes showed more activation in bilateral insula, striatum and left anterior cingulate. CONCLUSIONS: This is the first study to investigate reward processing in 22q11DS. Our preliminary results suggest that people with 22q11DS engage a fronto-temporal neural network. Compared to healthy controls, people with 22q11DS primarily displayed reduced activity in medial frontal regions during reward anticipation. COMT hemizygosity affects responsivity of the reward system in this condition. Alterations in reward processing partly underlain by the dopamine system may play a role in susceptibility for psychosis in 22q11DS. En ligne : http://dx.doi.org/10.1186/s11689-016-9158-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=349
in Journal of Neurodevelopmental Disorders > 8-1 (December 2016) . - p.25[article] Neural correlates of reward processing in adults with 22q11 deletion syndrome [Texte imprimé et/ou numérique] / E. D. A. VAN DUIN, Auteur ; L. GOOSSENS, Auteur ; D. HERNAUS, Auteur ; F. DA SILVA ALVES, Auteur ; N. SCHMITZ, Auteur ; K. SCHRUERS, Auteur ; T. VAN AMELSVOORT, Auteur . - p.25.
Langues : Anglais (eng)
in Journal of Neurodevelopmental Disorders > 8-1 (December 2016) . - p.25
Mots-clés : 22q11 deletion syndrome Comt Psychosis Reward Index. décimale : PER Périodiques Résumé : BACKGROUND: 22q11.2 deletion syndrome (22q11DS) is caused by a microdeletion on chromosome 22q11.2 and associated with an increased risk to develop psychosis. The gene coding for catechol-O-methyl-transferase (COMT) is located at the deleted region, resulting in disrupted dopaminergic neurotransmission in 22q11DS, which may contribute to the increased vulnerability for psychosis. A dysfunctional motivational reward system is considered one of the salient features in psychosis and thought to be related to abnormal dopaminergic neurotransmission. The functional anatomy of the brain reward circuitry has not yet been investigated in 22q11DS. METHODS: This study aims to investigate neural activity during anticipation of reward and loss in adult patients with 22q11DS. We measured blood-oxygen-level dependent (BOLD) activity in 16 patients with 22q11DS and 12 healthy controls during a monetary incentive delay task using a 3T Philips Intera MRI system. Data were analysed using SPM8. RESULTS: During anticipation of reward, the 22q11DS group alone displayed significant activation in bilateral middle frontal and temporal brain regions. Compared to healthy controls, significantly less activation in bilateral cingulate gyrus extending to premotor, primary motor and somatosensory areas was found. During anticipation of loss, the 22q11DS group displayed activity in the left middle frontal gyrus and anterior cingulate cortex, and relative to controls, they showed reduced brain activation in bilateral (pre)cuneus and left posterior cingulate. Within the 22q11DS group, COMT Val hemizygotes displayed more activation compared to Met hemizygotes in right posterior cingulate and bilateral parietal regions during anticipation of reward. During anticipation of loss, COMT Met hemizygotes compared to Val hemizygotes showed more activation in bilateral insula, striatum and left anterior cingulate. CONCLUSIONS: This is the first study to investigate reward processing in 22q11DS. Our preliminary results suggest that people with 22q11DS engage a fronto-temporal neural network. Compared to healthy controls, people with 22q11DS primarily displayed reduced activity in medial frontal regions during reward anticipation. COMT hemizygosity affects responsivity of the reward system in this condition. Alterations in reward processing partly underlain by the dopamine system may play a role in susceptibility for psychosis in 22q11DS. En ligne : http://dx.doi.org/10.1186/s11689-016-9158-5 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=349