Maternal immune response and air pollution exposure during pregnancy: insights from the Early Markers for Autism (EMA) study / Heather E. VOLK in Journal of Neurodevelopmental Disorders, 12 (2020)  

Public ISBD [article]  inJournal of Neurodevelopmental Disorders > 12 (2020) Titre : Maternal immune response and air pollution exposure during pregnancy: insights from the Early Markers for Autism (EMA) study Type de document : texte imprimé Auteurs : Heather E. VOLK, Auteur ; Bo PARK, Auteur ; Calliope HOLLINGUE, Auteur ; Karen L. JONES, Auteur ; Paul ASHWOOD, Auteur ; Gayle C. WINDHAM, Auteur ; Fred LURMAN, Auteur ; Stacey E. ALEXEEFF, Auteur ; Martin KHARRAZI, Auteur ; Michelle PEARL, Auteur ; Judy VAN DE WATER, Auteur ; Lisa A. CROEN, Auteur Langues : Anglais (eng) Mots-clés : Air Pollution/adverse effects  Autistic Disorder  Biomarkers  Case-Control Studies  Child  Female  Humans  Immunity  Male  Pregnancy/immunology  Prenatal Exposure Delayed Effects  United States  Air pollution  Autism spectrum disorder  Immune response  Intellectual disability  Prenatal exposure  declare. Index. décimale : PER Périodiques Résumé : BACKGROUND: Perinatal exposure to air pollution and immune system dysregulation are two factors consistently associated with autism spectrum disorders (ASD) and other neurodevelopmental outcomes. However, little is known about how air pollution may influence maternal immune function during pregnancy. OBJECTIVES: To assess the relationship between mid-gestational circulating levels of maternal cytokines/chemokines and previous month air pollution exposure across neurodevelopmental groups, and to assess whether cytokines/chemokines mediate the relationship between air pollution exposures and risk of ASD and/or intellectual disability (ID) in the Early Markers for Autism (EMA) study. METHODS: EMA is a population-based, nested case-control study which linked archived maternal serum samples collected during weeks 15-19 of gestation for routine prenatal screening, birth records, and Department of Developmental Services (DDS) records. Children receiving DDS services for ASD without intellectual disability (ASD without ID; n = 199), ASD with ID (ASD with ID; n = 180), ID without ASD (ID; n = 164), and children from the general population (GP; n = 414) with no DDS services were included in this analysis. Serum samples were quantified for 22 cytokines/chemokines using Luminex multiplex analysis technology. Air pollution exposure for the month prior to maternal serum collection was assigned based on the Environmental Protection Agency's Air Quality System data using the maternal residential address reported during the prenatal screening visit. RESULTS: Previous month air pollution exposure and mid-gestational maternal cytokine and chemokine levels were significantly correlated, though weak in magnitude (ranging from - 0.16 to 0.13). Ten pairs of mid-pregnancy immune markers and previous month air pollutants were significantly associated within one of the child neurodevelopmental groups, adjusted for covariates (p < 0.001). Mid-pregnancy air pollution was not associated with any neurodevelopmental outcome. IL-6 remained associated with ASD with ID even after adjusting for air pollution exposure. CONCLUSION: This study suggests that maternal immune activation is associated with risk for neurodevelopmental disorders. Furthermore, that prenatal air pollution exposure is associated with small, but perhaps biologically relevant, effects on maternal immune system function during pregnancy. Additional studies are needed to better evaluate how prenatal exposure to air pollution affects the trajectory of maternal immune activation during pregnancy, if windows of heightened susceptibility can be identified, and how these factors influence neurodevelopment of the offspring. En ligne : https://dx.doi.org/10.1186/s11689-020-09343-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=573 [article] Maternal immune response and air pollution exposure during pregnancy: insights from the Early Markers for Autism (EMA) study [texte imprimé] / Heather E. VOLK, Auteur ; Bo PARK, Auteur ; Calliope HOLLINGUE, Auteur ; Karen L. JONES, Auteur ; Paul ASHWOOD, Auteur ; Gayle C. WINDHAM, Auteur ; Fred LURMAN, Auteur ; Stacey E. ALEXEEFF, Auteur ; Martin KHARRAZI, Auteur ; Michelle PEARL, Auteur ; Judy VAN DE WATER, Auteur ; Lisa A. CROEN, Auteur. Langues : Anglais (eng) in Journal of Neurodevelopmental Disorders > 12 (2020) Mots-clés : Air Pollution/adverse effects  Autistic Disorder  Biomarkers  Case-Control Studies  Child  Female  Humans  Immunity  Male  Pregnancy/immunology  Prenatal Exposure Delayed Effects  United States  Air pollution  Autism spectrum disorder  Immune response  Intellectual disability  Prenatal exposure  declare. Index. décimale : PER Périodiques Résumé : BACKGROUND: Perinatal exposure to air pollution and immune system dysregulation are two factors consistently associated with autism spectrum disorders (ASD) and other neurodevelopmental outcomes. However, little is known about how air pollution may influence maternal immune function during pregnancy. OBJECTIVES: To assess the relationship between mid-gestational circulating levels of maternal cytokines/chemokines and previous month air pollution exposure across neurodevelopmental groups, and to assess whether cytokines/chemokines mediate the relationship between air pollution exposures and risk of ASD and/or intellectual disability (ID) in the Early Markers for Autism (EMA) study. METHODS: EMA is a population-based, nested case-control study which linked archived maternal serum samples collected during weeks 15-19 of gestation for routine prenatal screening, birth records, and Department of Developmental Services (DDS) records. Children receiving DDS services for ASD without intellectual disability (ASD without ID; n = 199), ASD with ID (ASD with ID; n = 180), ID without ASD (ID; n = 164), and children from the general population (GP; n = 414) with no DDS services were included in this analysis. Serum samples were quantified for 22 cytokines/chemokines using Luminex multiplex analysis technology. Air pollution exposure for the month prior to maternal serum collection was assigned based on the Environmental Protection Agency's Air Quality System data using the maternal residential address reported during the prenatal screening visit. RESULTS: Previous month air pollution exposure and mid-gestational maternal cytokine and chemokine levels were significantly correlated, though weak in magnitude (ranging from - 0.16 to 0.13). Ten pairs of mid-pregnancy immune markers and previous month air pollutants were significantly associated within one of the child neurodevelopmental groups, adjusted for covariates (p < 0.001). Mid-pregnancy air pollution was not associated with any neurodevelopmental outcome. IL-6 remained associated with ASD with ID even after adjusting for air pollution exposure. CONCLUSION: This study suggests that maternal immune activation is associated with risk for neurodevelopmental disorders. Furthermore, that prenatal air pollution exposure is associated with small, but perhaps biologically relevant, effects on maternal immune system function during pregnancy. Additional studies are needed to better evaluate how prenatal exposure to air pollution affects the trajectory of maternal immune activation during pregnancy, if windows of heightened susceptibility can be identified, and how these factors influence neurodevelopment of the offspring. En ligne : https://dx.doi.org/10.1186/s11689-020-09343-0 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=573

Newborn vitamin D levels in relation to autism spectrum disorders and intellectual disability: A case-control study in california / Gayle C. WINDHAM in Autism Research, 12-6 (June 2019)  

Public ISBD [article]  inAutism Research > 12-6 (June 2019) . - p.989-998 Titre : Newborn vitamin D levels in relation to autism spectrum disorders and intellectual disability: A case-control study in california Type de document : texte imprimé Auteurs : Gayle C. WINDHAM, Auteur ; Michelle PEARL, Auteur ; Meredith C. ANDERSON, Auteur ; Victor POON, Auteur ; Darryl EYLES, Auteur ; Karen L. JONES, Auteur ; Kristen LYALL, Auteur ; Martin KHARRAZI, Auteur ; Lisa A. CROEN, Auteur Année de publication : 2019 Article en page(s) : p.989-998 Langues : Anglais (eng) Mots-clés : Asd  autism  hydroxy-vitamin D  intellectual disability  vitamin D Index. décimale : PER Périodiques Résumé : Vitamin D deficiency has been increasing concurrently with prevalence of autism spectrum disorders (ASD), and emerging evidence suggests vitamin D is involved in brain development. Most prior studies of ASD examined vitamin D levels in children already diagnosed, but a few examined levels during perinatal development, the more likely susceptibility period. Therefore, we examined newborn vitamin D levels in a case-control study conducted among births in 2000-2003 in southern California. Children with ASD (N = 563) or intellectual disability (ID) (N = 190) were identified from the Department of Developmental Services and compared to population controls (N = 436) identified from birth certificates. 25-hydroxyvitamin D (25(OH)D) was measured in archived newborn dried blood spots by a sensitive assay and corrected to sera equivalents. We categorized 25(OH) D levels as deficient (<50 nmol/L), insufficient (50-74 nmol/L), and sufficient (>/=75 nmol/L), and also examined continuous levels, using logistic regression. The adjusted odds ratios (AOR) and 95% confidence intervals for ASD were 0.96 (0.64-1.4) for 25(OH)D deficiency (14% of newborns) and 1.2 (0.86-1.6) for insufficiency (26% of newborns). The AORs for continuous 25(OH)D (per 25 nmol/L) were 1.0 (0.91-1.09) for ASD and 1.14 (1.0-1.30) for ID. Thus, in this relatively large study of measured newborn vitamin D levels, our results do not support the hypothesis of lower 25(OH)D being associated with higher risk of ASD (or ID), although we observed suggestion of interactions with sex and race/ethnicity. 25(OH)D levels were relatively high (median 84 nmol/L in controls), so results may differ in populations with higher prevalence of low vitamin D levels. Autism Res 2019, 12: 989-998. (c) 2019 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: We studied whether vitamin D levels measured at birth were related to whether a child later developed autism (or low IQ). Our results did not show that children with autism, or low IQ, overall had lower vitamin D levels at birth than children without autism. Vitamin D levels were fairly high, on average, in these children born in Southern California. En ligne : https://dx.doi.org/10.1002/aur.2092 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=401 [article] Newborn vitamin D levels in relation to autism spectrum disorders and intellectual disability: A case-control study in california [texte imprimé] / Gayle C. WINDHAM, Auteur ; Michelle PEARL, Auteur ; Meredith C. ANDERSON, Auteur ; Victor POON, Auteur ; Darryl EYLES, Auteur ; Karen L. JONES, Auteur ; Kristen LYALL, Auteur ; Martin KHARRAZI, Auteur ; Lisa A. CROEN, Auteur . - 2019 . - p.989-998. Langues : Anglais (eng) in Autism Research > 12-6 (June 2019) . - p.989-998 Mots-clés : Asd  autism  hydroxy-vitamin D  intellectual disability  vitamin D Index. décimale : PER Périodiques Résumé : Vitamin D deficiency has been increasing concurrently with prevalence of autism spectrum disorders (ASD), and emerging evidence suggests vitamin D is involved in brain development. Most prior studies of ASD examined vitamin D levels in children already diagnosed, but a few examined levels during perinatal development, the more likely susceptibility period. Therefore, we examined newborn vitamin D levels in a case-control study conducted among births in 2000-2003 in southern California. Children with ASD (N = 563) or intellectual disability (ID) (N = 190) were identified from the Department of Developmental Services and compared to population controls (N = 436) identified from birth certificates. 25-hydroxyvitamin D (25(OH)D) was measured in archived newborn dried blood spots by a sensitive assay and corrected to sera equivalents. We categorized 25(OH) D levels as deficient (<50 nmol/L), insufficient (50-74 nmol/L), and sufficient (>/=75 nmol/L), and also examined continuous levels, using logistic regression. The adjusted odds ratios (AOR) and 95% confidence intervals for ASD were 0.96 (0.64-1.4) for 25(OH)D deficiency (14% of newborns) and 1.2 (0.86-1.6) for insufficiency (26% of newborns). The AORs for continuous 25(OH)D (per 25 nmol/L) were 1.0 (0.91-1.09) for ASD and 1.14 (1.0-1.30) for ID. Thus, in this relatively large study of measured newborn vitamin D levels, our results do not support the hypothesis of lower 25(OH)D being associated with higher risk of ASD (or ID), although we observed suggestion of interactions with sex and race/ethnicity. 25(OH)D levels were relatively high (median 84 nmol/L in controls), so results may differ in populations with higher prevalence of low vitamin D levels. Autism Res 2019, 12: 989-998. (c) 2019 International Society for Autism Research, Wiley Periodicals, Inc. LAY SUMMARY: We studied whether vitamin D levels measured at birth were related to whether a child later developed autism (or low IQ). Our results did not show that children with autism, or low IQ, overall had lower vitamin D levels at birth than children without autism. Vitamin D levels were fairly high, on average, in these children born in Southern California. En ligne : https://dx.doi.org/10.1002/aur.2092 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=401

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