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

Maternal Vitamin D Levels During Pregnancy in Association With Autism Spectrum Disorders (ASD) or Intellectual Disability (ID) in Offspring; Exploring Non-linear Patterns and Demographic Sub-groups / Gayle C. WINDHAM in Autism Research, 13-12 (December 2020)  

Public ISBD [article]  inAutism Research > 13-12 (December 2020) . - p.2216-2229 Titre : Maternal Vitamin D Levels During Pregnancy in Association With Autism Spectrum Disorders (ASD) or Intellectual Disability (ID) in Offspring; Exploring Non-linear Patterns and Demographic Sub-groups Type de document : texte imprimé Auteurs : Gayle C. WINDHAM, Auteur ; Michelle PEARL, Auteur ; Victor POON, Auteur ; Kimberly BERGER, Auteur ; Jasmine W. SORIANO, Auteur ; Darryl EYLES, Auteur ; Kristen LYALL, Auteur ; Martin KHARRAZI, Auteur ; Lisa A. CROEN, Auteur Article en page(s) : p.2216-2229 Langues : Anglais (eng) Mots-clés : 25(oh)d  Asd  autism  hydroxy-vitamin D  intellectual disability  race/ethnic differences  sex differences  vitamin D Index. décimale : PER Périodiques Résumé : Increasing vitamin D deficiency and evidence for vitamin D's role in brain and immune function have recently led to studies of neurodevelopment; however, few are specific to autism spectrum disorder (ASD) and vitamin D in pregnancy, a likely susceptibility period. We examined this in a case-control study of 2000-2003 Southern Californian births; ASD and intellectual disability (ID) were identified through the Department of Developmental Services and controls from birth certificates (N = 534, 181, and 421, respectively, in this analysis). Total 25-Hydroxyvitamin D (25(OH)D) was measured in mid-pregnancy serum, categorized as deficient (<50 nmol/L), insufficient (50-74 nmol/L), or sufficient (≥75 nmol/L, referent category), and examined continuously (per 25 nmol/L). Crude and adjusted odds ratios (AORs) and 95% confidence intervals (95% CI) were calculated. Non-linearity was examined with cubic splines. AORs (95% CI) for ASD were 0.79 (0.49-1.3) for maternal deficiency (9.5%), 0.93 (0.68-1.3) for insufficiency (25.6%), and 0.95 (0.86, 1.05) for linear continuous 25(OH)D. Results were similarly null for ASD with or without ID, and ID only. Interactions were observed; non-Hispanic whites (NHW) (AOR = 0.82, 95% CI = 0.69-0.98) and males (AOR = 0.89, 95% CI = 0.80-0.99) had protective associations for ASD with continuous 25(OH)D. A positive association with ASD was observed in females (AOR = 1.40, 95% CI = 1.06-1.85). With splines, a non-linear inverted j-shaped pattern was seen overall (P = 0.009 for non-linearity), with the peak around 100 nmol/L; a non-linear pattern was not observed among NHW, females, nor for ID. Our findings from a large study of ASD and prenatal vitamin D levels indicate that further research is needed to investigate non-linear patterns and potentially vulnerable sub-groups. LAY SUMMARY: We studied whether mothers' vitamin D levels during pregnancy were related to their children having autism (or low IQ) later. Low vitamin D levels were not related to greater risk of autism or low IQ in children overall. With higher levels of mothers' vitamin D, risk of autism went down in boys, but went up in girls. Risk of autism also went down in children of non-Hispanic white mothers with higher vitamin D levels, but we did not find a relation in other race/ethnic groups. En ligne : http://dx.doi.org/10.1002/aur.2424 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=434 [article] Maternal Vitamin D Levels During Pregnancy in Association With Autism Spectrum Disorders (ASD) or Intellectual Disability (ID) in Offspring; Exploring Non-linear Patterns and Demographic Sub-groups [texte imprimé] / Gayle C. WINDHAM, Auteur ; Michelle PEARL, Auteur ; Victor POON, Auteur ; Kimberly BERGER, Auteur ; Jasmine W. SORIANO, Auteur ; Darryl EYLES, Auteur ; Kristen LYALL, Auteur ; Martin KHARRAZI, Auteur ; Lisa A. CROEN, Auteur . - p.2216-2229. Langues : Anglais (eng) in Autism Research > 13-12 (December 2020) . - p.2216-2229 Mots-clés : 25(oh)d  Asd  autism  hydroxy-vitamin D  intellectual disability  race/ethnic differences  sex differences  vitamin D Index. décimale : PER Périodiques Résumé : Increasing vitamin D deficiency and evidence for vitamin D's role in brain and immune function have recently led to studies of neurodevelopment; however, few are specific to autism spectrum disorder (ASD) and vitamin D in pregnancy, a likely susceptibility period. We examined this in a case-control study of 2000-2003 Southern Californian births; ASD and intellectual disability (ID) were identified through the Department of Developmental Services and controls from birth certificates (N = 534, 181, and 421, respectively, in this analysis). Total 25-Hydroxyvitamin D (25(OH)D) was measured in mid-pregnancy serum, categorized as deficient (<50 nmol/L), insufficient (50-74 nmol/L), or sufficient (≥75 nmol/L, referent category), and examined continuously (per 25 nmol/L). Crude and adjusted odds ratios (AORs) and 95% confidence intervals (95% CI) were calculated. Non-linearity was examined with cubic splines. AORs (95% CI) for ASD were 0.79 (0.49-1.3) for maternal deficiency (9.5%), 0.93 (0.68-1.3) for insufficiency (25.6%), and 0.95 (0.86, 1.05) for linear continuous 25(OH)D. Results were similarly null for ASD with or without ID, and ID only. Interactions were observed; non-Hispanic whites (NHW) (AOR = 0.82, 95% CI = 0.69-0.98) and males (AOR = 0.89, 95% CI = 0.80-0.99) had protective associations for ASD with continuous 25(OH)D. A positive association with ASD was observed in females (AOR = 1.40, 95% CI = 1.06-1.85). With splines, a non-linear inverted j-shaped pattern was seen overall (P = 0.009 for non-linearity), with the peak around 100 nmol/L; a non-linear pattern was not observed among NHW, females, nor for ID. Our findings from a large study of ASD and prenatal vitamin D levels indicate that further research is needed to investigate non-linear patterns and potentially vulnerable sub-groups. LAY SUMMARY: We studied whether mothers' vitamin D levels during pregnancy were related to their children having autism (or low IQ) later. Low vitamin D levels were not related to greater risk of autism or low IQ in children overall. With higher levels of mothers' vitamin D, risk of autism went down in boys, but went up in girls. Risk of autism also went down in children of non-Hispanic white mothers with higher vitamin D levels, but we did not find a relation in other race/ethnic groups. En ligne : http://dx.doi.org/10.1002/aur.2424 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=434

Neonatal Thyroid Stimulating Hormone and Subsequent Diagnosis of Autism Spectrum Disorders and Intellectual Disability / Jennifer L. AMES in Autism Research, 13-3 (March 2020)  

Public ISBD [article]  inAutism Research > 13-3 (March 2020) . - p.444-455 Titre : Neonatal Thyroid Stimulating Hormone and Subsequent Diagnosis of Autism Spectrum Disorders and Intellectual Disability Type de document : texte imprimé Auteurs : Jennifer L. AMES, Auteur ; Gayle C. WINDHAM, Auteur ; Kristen LYALL, Auteur ; Michelle PEARL, Auteur ; Martin KHARRAZI, Auteur ; Cathleen K. YOSHIDA, Auteur ; Judy VAN DE WATER, Auteur ; Paul ASHWOOD, Auteur ; Lisa A. CROEN, Auteur Article en page(s) : p.444-455 Langues : Anglais (eng) Mots-clés : Asd  autism  intellectual disability  neonatal  thyroid  thyroid-stimulating hormone Index. décimale : PER Périodiques Résumé : Hypothyroid conditions in early life, if left untreated, are associated with adverse neurodevelopmental outcomes, including intellectual disability (ID). However, evidence addressing the role of neonatal thyroid hormone insufficiencies in the altered neurobiology underlying autism spectrum disorders (ASD), particularly among its subphenotypes, is limited. We conducted a population-based, case-control study among a sample of children born during 2000-2003 in Southern California. We examined neonatal thyroid-stimulating hormone (TSH) measured during routine newborn screening among children later diagnosed with ASD (n = 518) or ID (n = 145) and general population (GP) controls (n = 399). TSH was further analyzed in relation to ASD subgroups of intellectual ability and onset type (early-onset ASD vs. ASD with regression) ascertained by expert review of developmental services records. Odds ratios (ORs) of the differences in TSH between groups were obtained from multivariate logistic regression. We examined neonatal TSH as continuous (ln-transformed) and as quartiles. We found no association between continuous neonatal TSH levels and ASD (adj-OR: 1.00, 95% CI: 0.79-1.26) nor ID (adj-OR = 1.01, 95% CI: 0.73-1.40). Among ASD subphenotypes, we observed a suggestive inverse trend between ASD with regression and TSH, though the association only reached statistical significance in the highest TSH quartile (adj-OR: 0.50, 95% CI: 0.26-0.98). While there was little evidence that neonatal TSH is related to overall ASD risk, more work is needed to understand the influence of thyroid hormones on ASD subphenotypes. Autism Res 2020, 13: 444-455. (c) 2019 International Society for Autism Research,Wiley Periodicals, Inc. LAY SUMMARY: Low levels of thyroid hormone at birth can negatively impact brain development. We studied whether newborn levels of thyroid stimulating hormone (TSH) were associated with autism spectrum disorder (ASD) and its subtypes in a sample of children born in California. Newborn TSH was not related to the overall risk of ASD or intellectual disability. However, the relationships of thyroid hormone levels at birth and specific subtypes of ASD, particularly ASD with developmental regression, may need more research. En ligne : http://dx.doi.org/10.1002/aur.2247 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=421 [article] Neonatal Thyroid Stimulating Hormone and Subsequent Diagnosis of Autism Spectrum Disorders and Intellectual Disability [texte imprimé] / Jennifer L. AMES, Auteur ; Gayle C. WINDHAM, Auteur ; Kristen LYALL, Auteur ; Michelle PEARL, Auteur ; Martin KHARRAZI, Auteur ; Cathleen K. YOSHIDA, Auteur ; Judy VAN DE WATER, Auteur ; Paul ASHWOOD, Auteur ; Lisa A. CROEN, Auteur . - p.444-455. Langues : Anglais (eng) in Autism Research > 13-3 (March 2020) . - p.444-455 Mots-clés : Asd  autism  intellectual disability  neonatal  thyroid  thyroid-stimulating hormone Index. décimale : PER Périodiques Résumé : Hypothyroid conditions in early life, if left untreated, are associated with adverse neurodevelopmental outcomes, including intellectual disability (ID). However, evidence addressing the role of neonatal thyroid hormone insufficiencies in the altered neurobiology underlying autism spectrum disorders (ASD), particularly among its subphenotypes, is limited. We conducted a population-based, case-control study among a sample of children born during 2000-2003 in Southern California. We examined neonatal thyroid-stimulating hormone (TSH) measured during routine newborn screening among children later diagnosed with ASD (n = 518) or ID (n = 145) and general population (GP) controls (n = 399). TSH was further analyzed in relation to ASD subgroups of intellectual ability and onset type (early-onset ASD vs. ASD with regression) ascertained by expert review of developmental services records. Odds ratios (ORs) of the differences in TSH between groups were obtained from multivariate logistic regression. We examined neonatal TSH as continuous (ln-transformed) and as quartiles. We found no association between continuous neonatal TSH levels and ASD (adj-OR: 1.00, 95% CI: 0.79-1.26) nor ID (adj-OR = 1.01, 95% CI: 0.73-1.40). Among ASD subphenotypes, we observed a suggestive inverse trend between ASD with regression and TSH, though the association only reached statistical significance in the highest TSH quartile (adj-OR: 0.50, 95% CI: 0.26-0.98). While there was little evidence that neonatal TSH is related to overall ASD risk, more work is needed to understand the influence of thyroid hormones on ASD subphenotypes. Autism Res 2020, 13: 444-455. (c) 2019 International Society for Autism Research,Wiley Periodicals, Inc. LAY SUMMARY: Low levels of thyroid hormone at birth can negatively impact brain development. We studied whether newborn levels of thyroid stimulating hormone (TSH) were associated with autism spectrum disorder (ASD) and its subtypes in a sample of children born in California. Newborn TSH was not related to the overall risk of ASD or intellectual disability. However, the relationships of thyroid hormone levels at birth and specific subtypes of ASD, particularly ASD with developmental regression, may need more research. En ligne : http://dx.doi.org/10.1002/aur.2247 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=421

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

Polyunsaturated Fatty Acids in Newborn Bloodspots: Associations With Autism Spectrum Disorder and Correlation With Maternal Serum Levels / Anna BOSTWICK in Autism Research, 13-9 (September 2020)  

Public ISBD [article]  inAutism Research > 13-9 (September 2020) . - p.1601-1613 Titre : Polyunsaturated Fatty Acids in Newborn Bloodspots: Associations With Autism Spectrum Disorder and Correlation With Maternal Serum Levels Type de document : texte imprimé Auteurs : Anna BOSTWICK, Auteur ; Nathaniel W. SNYDER, Auteur ; Gayle C. WINDHAM, Auteur ; Casey WHITMAN, Auteur ; Michelle PEARL, Auteur ; Lucy ROBINSON, Auteur ; Craig J. NEWSCHAFFER, Auteur ; Kristen LYALL, Auteur Article en page(s) : p.1601-1613 Langues : Anglais (eng) Index. décimale : PER Périodiques Résumé : We conducted a population-based case–control study to examine newborn polyunsaturated fatty acid (PUFA) levels in association with autism spectrum disorder (ASD) and assess PUFA correlation across two time points. ASD cases (n = 200) were identified through the Department of Developmental Services and matched to live-birth population controls (n = 200) on birth month, year (2010–2011), and sex. Nonesterified PUFAs were measured by isotope dilution liquid chromatography-high resolution mass spectrometry from archived newborn dried blood spots and maternal mid-pregnancy serum samples. Crude and adjusted conditional logistic regression models were used to examine the association between neonatal PUFA levels, categorized in quartiles and according to distributional extremes, and ASD. Cubic splines were utilized to examine nonlinear relationships between continuous neonatal PUFAs and ASD. The correlation between neonatal and maternal levels was examined using Pearson correlation coefficients. In adjusted analyses of neonatal PUFA levels, no clear trends emerged, though there was an elevated odds ratio of ASD for the third quartile of linoleic acid, relative to the first (adjusted odds ratio = 2.49, 95% confidence interval: 1.31, 4.70). Cubic spline analysis suggested a nonlinear association between linoleic acid and ASD, though this was not robust to sensitivity analyses. While individual PUFAs were significantly correlated with one another within a given time point, aside from docohexaseanoic acid, PUFAs were not correlated across maternal and neonatal samples. Overall, our findings do not support an association between neonatal PUFA levels and ASD. Future work should confirm and expand these findings by examining associations with phenotypic subgroups and considering PUFAs in other time points. Lay Summary In this study, we examined whether levels of fats known as polyunsaturated fatty acids, measured in newborns, were related to later child diagnosis of autism spectrum disorder (ASD). Overall, we did not find strong evidence for hypothesized reduction in risk of ASD based on newborn levels of these fats. Future studies in larger samples and considering other time points may be useful to explain whether these fats are important in brain development related to ASD. Autism Res 2020, 13: 1601–1613. © 2020 International Society for Autism Research, Wiley Periodicals, Inc. En ligne : http://dx.doi.org/10.1002/aur.2365 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=431 [article] Polyunsaturated Fatty Acids in Newborn Bloodspots: Associations With Autism Spectrum Disorder and Correlation With Maternal Serum Levels [texte imprimé] / Anna BOSTWICK, Auteur ; Nathaniel W. SNYDER, Auteur ; Gayle C. WINDHAM, Auteur ; Casey WHITMAN, Auteur ; Michelle PEARL, Auteur ; Lucy ROBINSON, Auteur ; Craig J. NEWSCHAFFER, Auteur ; Kristen LYALL, Auteur . - p.1601-1613. Langues : Anglais (eng) in Autism Research > 13-9 (September 2020) . - p.1601-1613 Index. décimale : PER Périodiques Résumé : We conducted a population-based case–control study to examine newborn polyunsaturated fatty acid (PUFA) levels in association with autism spectrum disorder (ASD) and assess PUFA correlation across two time points. ASD cases (n = 200) were identified through the Department of Developmental Services and matched to live-birth population controls (n = 200) on birth month, year (2010–2011), and sex. Nonesterified PUFAs were measured by isotope dilution liquid chromatography-high resolution mass spectrometry from archived newborn dried blood spots and maternal mid-pregnancy serum samples. Crude and adjusted conditional logistic regression models were used to examine the association between neonatal PUFA levels, categorized in quartiles and according to distributional extremes, and ASD. Cubic splines were utilized to examine nonlinear relationships between continuous neonatal PUFAs and ASD. The correlation between neonatal and maternal levels was examined using Pearson correlation coefficients. In adjusted analyses of neonatal PUFA levels, no clear trends emerged, though there was an elevated odds ratio of ASD for the third quartile of linoleic acid, relative to the first (adjusted odds ratio = 2.49, 95% confidence interval: 1.31, 4.70). Cubic spline analysis suggested a nonlinear association between linoleic acid and ASD, though this was not robust to sensitivity analyses. While individual PUFAs were significantly correlated with one another within a given time point, aside from docohexaseanoic acid, PUFAs were not correlated across maternal and neonatal samples. Overall, our findings do not support an association between neonatal PUFA levels and ASD. Future work should confirm and expand these findings by examining associations with phenotypic subgroups and considering PUFAs in other time points. Lay Summary In this study, we examined whether levels of fats known as polyunsaturated fatty acids, measured in newborns, were related to later child diagnosis of autism spectrum disorder (ASD). Overall, we did not find strong evidence for hypothesized reduction in risk of ASD based on newborn levels of these fats. Future studies in larger samples and considering other time points may be useful to explain whether these fats are important in brain development related to ASD. Autism Res 2020, 13: 1601–1613. © 2020 International Society for Autism Research, Wiley Periodicals, Inc. En ligne : http://dx.doi.org/10.1002/aur.2365 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=431

A profile and review of findings from the Early Markers for Autism study: unique contributions from a population-based case-control study in California / Kristen LYALL in Molecular Autism, 12 (2021)  

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The association of in utero tobacco smoke exposure, quantified by serum cotinine, and Autism Spectrum Disorder / Kimberly BERGER in Autism Research, 14-9 (September 2021)  

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