Perinatal testosterone exposure and autistic-like traits in the general population: a longitudinal pregnancy-cohort study / Andrew J. O. WHITEHOUSE in Journal of Neurodevelopmental Disorders, 4-1 (December 2012)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 4-1 (December 2012) . - p.25 Titre : Perinatal testosterone exposure and autistic-like traits in the general population: a longitudinal pregnancy-cohort study Type de document : Texte imprimé et/ou numérique Auteurs : Andrew J. O. WHITEHOUSE, Auteur ; E. MATTES, Auteur ; M. T. MAYBERY, Auteur ; Cheryl DISSANAYAKE, Auteur ; M. SAWYER, Auteur ; R. M. JONES, Auteur ; C. E. PENNELL, Auteur ; J. A. KEELAN, Auteur ; M. HICKEY, Auteur Article en page(s) : p.25 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : UNLABELLED: BACKGROUND: Increased prenatal testosterone exposure has been hypothesized as a mechanism underlying autism spectrum disorders (ASD). However, no studies have prospectively measured prenatal testosterone exposure and ASD. The current study sought to determine whether testosterone concentrations in umbilical cord blood are associated with a clinical diagnosis of ASD in a small number of children and with autistic-like traits in the general population. METHODS: Umbilical cord blood was collected from 707 children. Samples were analyzed for total (TT) and bioavailable (BioT) testosterone concentrations. Parent report indicated that five individuals had a clinical diagnosis of ASD. Those participants without a diagnosis were approached in early adulthood to complete the Autism-Spectrum Quotient (AQ), a self-report measure of autistic-like traits, with 184 males (M = 20.10 years; SD= 0.65 years) and 190 females (M = 19.92 years; SD=0.68 years) providing data. RESULTS: The BioT and TT concentrations of the five children diagnosed with ASD were within one standard-deviation of the sex-specific means. Spearman's rank-order coefficients revealed no significant correlations between TT levels and scores on any AQ scale among males (rho range: -.01 to .06) or females (rho value range: -.07 to .01). There was also no significant association between BioT or TT concentrations and AQ scores among males (rho value range: -.07 to .08) or females (rho value range: -.06 to .12). Males were more likely than females to have 'high' scores (upper decile) on the AQ scale relating pattern and detail processing. However, the likelihood of a high score on this scale was unrelated to BioT and TT concentrations in both males and females. CONCLUSIONS: These findings indicate that testosterone concentrations from umbilical cord blood are unrelated to autistic-like traits in the general population. However, the findings do not exclude an association between testosterone exposure in early intrauterine life and ASD. En ligne : http://dx.doi.org/10.1186/1866-1955-4-25 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=344 [article] Perinatal testosterone exposure and autistic-like traits in the general population: a longitudinal pregnancy-cohort study [Texte imprimé et/ou numérique] / Andrew J. O. WHITEHOUSE, Auteur ; E. MATTES, Auteur ; M. T. MAYBERY, Auteur ; Cheryl DISSANAYAKE, Auteur ; M. SAWYER, Auteur ; R. M. JONES, Auteur ; C. E. PENNELL, Auteur ; J. A. KEELAN, Auteur ; M. HICKEY, Auteur . - p.25. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 4-1 (December 2012) . - p.25 Index. décimale : PER Périodiques Résumé : UNLABELLED: BACKGROUND: Increased prenatal testosterone exposure has been hypothesized as a mechanism underlying autism spectrum disorders (ASD). However, no studies have prospectively measured prenatal testosterone exposure and ASD. The current study sought to determine whether testosterone concentrations in umbilical cord blood are associated with a clinical diagnosis of ASD in a small number of children and with autistic-like traits in the general population. METHODS: Umbilical cord blood was collected from 707 children. Samples were analyzed for total (TT) and bioavailable (BioT) testosterone concentrations. Parent report indicated that five individuals had a clinical diagnosis of ASD. Those participants without a diagnosis were approached in early adulthood to complete the Autism-Spectrum Quotient (AQ), a self-report measure of autistic-like traits, with 184 males (M = 20.10 years; SD= 0.65 years) and 190 females (M = 19.92 years; SD=0.68 years) providing data. RESULTS: The BioT and TT concentrations of the five children diagnosed with ASD were within one standard-deviation of the sex-specific means. Spearman's rank-order coefficients revealed no significant correlations between TT levels and scores on any AQ scale among males (rho range: -.01 to .06) or females (rho value range: -.07 to .01). There was also no significant association between BioT or TT concentrations and AQ scores among males (rho value range: -.07 to .08) or females (rho value range: -.06 to .12). Males were more likely than females to have 'high' scores (upper decile) on the AQ scale relating pattern and detail processing. However, the likelihood of a high score on this scale was unrelated to BioT and TT concentrations in both males and females. CONCLUSIONS: These findings indicate that testosterone concentrations from umbilical cord blood are unrelated to autistic-like traits in the general population. However, the findings do not exclude an association between testosterone exposure in early intrauterine life and ASD. En ligne : http://dx.doi.org/10.1186/1866-1955-4-25 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=344

A prospective study of fetal head growth, autistic traits and autism spectrum disorder / Laura M. E. BLANKEN in Autism Research, 11-4 (April 2018)  

Public ISBD [article]  inAutism Research > 11-4 (April 2018) . - p.602-612 Titre : A prospective study of fetal head growth, autistic traits and autism spectrum disorder Type de document : Texte imprimé et/ou numérique Auteurs : Laura M. E. BLANKEN, Auteur ; A. DASS, Auteur ; Gail A. ALVARES, Auteur ; J. VAN DER ENDE, Auteur ; Nikita K. SCHOEMAKER, Auteur ; H. EL MARROUN, Auteur ; M. HICKEY, Auteur ; C. PENNELL, Auteur ; S. WHITE, Auteur ; M. T. MAYBERY, Auteur ; Cheryl DISSANAYAKE, Auteur ; Vincent W.V. JADDOE, Auteur ; F. C. VERHULST, Auteur ; H. TIEMEIER, Auteur ; W. MCINTOSH, Auteur ; T. WHITE, Auteur ; Andrew J. O. WHITEHOUSE, Auteur Article en page(s) : p.602-612 Langues : Anglais (eng) Mots-clés : brain growth  head circumference  pregnancy  prenatal  ultrasound Index. décimale : PER Périodiques Résumé : Altered trajectories of brain growth are often reported in Autism Spectrum Disorder (ASD), particularly during the first year of life. However, less is known about prenatal head growth trajectories, and no study has examined the relation with postnatal autistic symptom severity. The current study prospectively examined the association between fetal head growth and the spectrum of autistic symptom severity in two large population-based cohorts, including a sample of individuals with clinically diagnosed ASD. This study included 3,820 children from two longitudinal prenatal cohorts in The Netherlands and Australia, comprising 60 individuals with a confirmed diagnosis of ASD. Latent growth curve models were used to examine the relationship between fetal head circumference measured at three different time points and autistic traits measured in postnatal life using either the Social Responsiveness Scale or the Autism-Spectrum Quotient. While lower initial prenatal HC was weakly associated with increasing autistic traits in the Dutch cohort, this relationship was not observed in the Australian cohort, nor when the two cohorts were analysed together. No differences in prenatal head growth were found between individuals with ASD and controls. This large population-based study identified no consistent association across two cohorts between prenatal head growth and postnatal autistic traits. Our mixed findings suggest that further research in this area is needed. Autism Res 2018, 11: 602-612. (c) 2018 The Authors Autism Research published by International Society for Autism Research and Wiley Periodicals, Inc. LAY SUMMARY: It is not known whether different patterns of postnatal brain growth in Autism Spectrum Disorder (ASD) also occurs prenatally. We examined fetal head growth and autistic symptoms in two large groups from The Netherlands and Australia. Lower initial prenatal head circumference was associated with autistic traits in the Dutch, but not the Australian, group. No differences in head growth were found in individuals with ASD and controls when the data was combined. Our mixed findings suggest that more research in this area is needed. En ligne : http://dx.doi.org/10.1002/aur.1921 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=358 [article] A prospective study of fetal head growth, autistic traits and autism spectrum disorder [Texte imprimé et/ou numérique] / Laura M. E. BLANKEN, Auteur ; A. DASS, Auteur ; Gail A. ALVARES, Auteur ; J. VAN DER ENDE, Auteur ; Nikita K. SCHOEMAKER, Auteur ; H. EL MARROUN, Auteur ; M. HICKEY, Auteur ; C. PENNELL, Auteur ; S. WHITE, Auteur ; M. T. MAYBERY, Auteur ; Cheryl DISSANAYAKE, Auteur ; Vincent W.V. JADDOE, Auteur ; F. C. VERHULST, Auteur ; H. TIEMEIER, Auteur ; W. MCINTOSH, Auteur ; T. WHITE, Auteur ; Andrew J. O. WHITEHOUSE, Auteur . - p.602-612. Langues : Anglais (eng) in Autism Research > 11-4 (April 2018) . - p.602-612 Mots-clés : brain growth  head circumference  pregnancy  prenatal  ultrasound Index. décimale : PER Périodiques Résumé : Altered trajectories of brain growth are often reported in Autism Spectrum Disorder (ASD), particularly during the first year of life. However, less is known about prenatal head growth trajectories, and no study has examined the relation with postnatal autistic symptom severity. The current study prospectively examined the association between fetal head growth and the spectrum of autistic symptom severity in two large population-based cohorts, including a sample of individuals with clinically diagnosed ASD. This study included 3,820 children from two longitudinal prenatal cohorts in The Netherlands and Australia, comprising 60 individuals with a confirmed diagnosis of ASD. Latent growth curve models were used to examine the relationship between fetal head circumference measured at three different time points and autistic traits measured in postnatal life using either the Social Responsiveness Scale or the Autism-Spectrum Quotient. While lower initial prenatal HC was weakly associated with increasing autistic traits in the Dutch cohort, this relationship was not observed in the Australian cohort, nor when the two cohorts were analysed together. No differences in prenatal head growth were found between individuals with ASD and controls. This large population-based study identified no consistent association across two cohorts between prenatal head growth and postnatal autistic traits. Our mixed findings suggest that further research in this area is needed. Autism Res 2018, 11: 602-612. (c) 2018 The Authors Autism Research published by International Society for Autism Research and Wiley Periodicals, Inc. LAY SUMMARY: It is not known whether different patterns of postnatal brain growth in Autism Spectrum Disorder (ASD) also occurs prenatally. We examined fetal head growth and autistic symptoms in two large groups from The Netherlands and Australia. Lower initial prenatal head circumference was associated with autistic traits in the Dutch, but not the Australian, group. No differences in head growth were found in individuals with ASD and controls when the data was combined. Our mixed findings suggest that more research in this area is needed. En ligne : http://dx.doi.org/10.1002/aur.1921 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=358

The perinatal androgen to estrogen ratio and autistic-like traits in the general population: a longitudinal pregnancy cohort study / E. S. JAMNADASS in Journal of Neurodevelopmental Disorders, 7-1 (December 2015)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 7-1 (December 2015) . - p.17 Titre : The perinatal androgen to estrogen ratio and autistic-like traits in the general population: a longitudinal pregnancy cohort study Type de document : Texte imprimé et/ou numérique Auteurs : E. S. JAMNADASS, Auteur ; J. A. KEELAN, Auteur ; L. P. HOLLIER, Auteur ; M. HICKEY, Auteur ; M. T. MAYBERY, Auteur ; Andrew J. O. WHITEHOUSE, Auteur Article en page(s) : p.17 Langues : Anglais (eng) Mots-clés : Androgens  Autism-Spectrum Quotient  Autistic-like traits  Cord blood  Estrogens  Perinatal  Sex steroids Index. décimale : PER Périodiques Résumé : BACKGROUND: Prenatal androgen exposure has been hypothesized to be linked to autism spectrum disorder (ASD). While previous studies have found a link between testosterone levels in amniotic fluid and autistic-like traits, a similar relationship has not been found for testosterone in umbilical cord blood. However, it may be the net biological activity of multiple androgens and estrogens that influences postnatal effects of prenatal sex steroids. Accordingly, composite levels of androgens (A) and estrogens (E) were investigated, along with their ratio, in relation to autistic-like traits in young adulthood. METHODS: Sex steroid data in umbilical cord blood were available from 860 individuals at delivery. Samples were analyzed for androgens (testosterone, androstenedione, and dehydroepiandrosterone) and estrogens (estrone, estradiol, estriol, and estetrol). Levels of bioavailable testosterone, estradiol, and estrone were measured and used to calculate A and E composites and the A to E ratio. Participants were approached in early adulthood to complete the autism-spectrum quotient (AQ) as a self-report measure of autistic-like traits, with 183 males (M = 20.10 years, SD = 0.65 years) and 189 females (M =19.92 years, SD = 0.68 years) providing data. RESULTS: Males exhibited significantly higher androgen composites and A to E composite ratios than females. Males also scored significantly higher on the details/patterns subscale of the AQ. Subsequent categorical and continuous analyses, which accounted for covariates, revealed no substantial relationships between the A/E composites or the A to E ratio and the AQ total or subscale scores. CONCLUSIONS: The current study found no link between the A/E composites or the A to E ratio in cord blood and autistic-like traits in the population as measured by the AQ. These outcomes do not exclude the possibility that these sex steroid variables may predict other neurodevelopmental traits in early development. En ligne : http://dx.doi.org/10.1186/s11689-015-9114-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=347 [article] The perinatal androgen to estrogen ratio and autistic-like traits in the general population: a longitudinal pregnancy cohort study [Texte imprimé et/ou numérique] / E. S. JAMNADASS, Auteur ; J. A. KEELAN, Auteur ; L. P. HOLLIER, Auteur ; M. HICKEY, Auteur ; M. T. MAYBERY, Auteur ; Andrew J. O. WHITEHOUSE, Auteur . - p.17. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 7-1 (December 2015) . - p.17 Mots-clés : Androgens  Autism-Spectrum Quotient  Autistic-like traits  Cord blood  Estrogens  Perinatal  Sex steroids Index. décimale : PER Périodiques Résumé : BACKGROUND: Prenatal androgen exposure has been hypothesized to be linked to autism spectrum disorder (ASD). While previous studies have found a link between testosterone levels in amniotic fluid and autistic-like traits, a similar relationship has not been found for testosterone in umbilical cord blood. However, it may be the net biological activity of multiple androgens and estrogens that influences postnatal effects of prenatal sex steroids. Accordingly, composite levels of androgens (A) and estrogens (E) were investigated, along with their ratio, in relation to autistic-like traits in young adulthood. METHODS: Sex steroid data in umbilical cord blood were available from 860 individuals at delivery. Samples were analyzed for androgens (testosterone, androstenedione, and dehydroepiandrosterone) and estrogens (estrone, estradiol, estriol, and estetrol). Levels of bioavailable testosterone, estradiol, and estrone were measured and used to calculate A and E composites and the A to E ratio. Participants were approached in early adulthood to complete the autism-spectrum quotient (AQ) as a self-report measure of autistic-like traits, with 183 males (M = 20.10 years, SD = 0.65 years) and 189 females (M =19.92 years, SD = 0.68 years) providing data. RESULTS: Males exhibited significantly higher androgen composites and A to E composite ratios than females. Males also scored significantly higher on the details/patterns subscale of the AQ. Subsequent categorical and continuous analyses, which accounted for covariates, revealed no substantial relationships between the A/E composites or the A to E ratio and the AQ total or subscale scores. CONCLUSIONS: The current study found no link between the A/E composites or the A to E ratio in cord blood and autistic-like traits in the population as measured by the AQ. These outcomes do not exclude the possibility that these sex steroid variables may predict other neurodevelopmental traits in early development. En ligne : http://dx.doi.org/10.1186/s11689-015-9114-9 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=347

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