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https://www.readbyqxmd.com/read/28322282/maternal-immune-activation-dysregulation-of-the-fetal-brain-transcriptome-and-relevance-to-the-pathophysiology-of-autism-spectrum-disorder
#1
M V Lombardo, H M Moon, J Su, T D Palmer, E Courchesne, T Pramparo
Maternal immune activation (MIA) via infection during pregnancy is known to increase risk for autism spectrum disorder (ASD). However, it is unclear how MIA disrupts fetal brain gene expression in ways that may explain this increased risk. Here we examine how MIA dysregulates rat fetal brain gene expression (at a time point analogous to the end of the first trimester of human gestation) in ways relevant to ASD-associated pathophysiology. MIA downregulates expression of ASD-associated genes, with the largest enrichments in genes known to harbor rare highly penetrant mutations...
March 21, 2017: Molecular Psychiatry
https://www.readbyqxmd.com/read/28319657/risk-of-autism-spectrum-disorders-in-children-born-to-mothers-with-rheumatoid-arthritis-a-systematic-literature-review
#2
Sophie Wojcik, Sasha Bernatsky, Robert W Platt, Christian A Pineau, Ann E Clarke, Éric Fombonne, Anick Bérard, Évelyne Vinet
OBJECTIVE: Recent evidence suggests in utero exposure to maternal antibodies and cytokines as important risk factors for autism spectrum disorders (ASD). We aimed to systematically review the risk of ASD in children born to mothers with rheumatoid arthritis (RA) compared to children born to mothers without RA. METHODS: We conducted a systematic review of original articles using electronic databases: PubMed, EMBase, and Web of Science. RESULTS: Our literature search identified a total of 70 articles...
March 20, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/28316773/vitamin-d-treatment-during-pregnancy-prevents-autism-related-phenotypes-in-a-mouse-model-of-maternal-immune-activation
#3
Stephanie Vuillermot, Wei Luan, Urs Meyer, Darryl Eyles
BACKGROUND: Prenatal exposure to infection is a recognized environmental risk factor for neuropsychiatric disorders of developmental origins such as autism or schizophrenia. Experimental work in animals indicates that this link is mediated by maternal immune activation (MIA) involving interactions between cytokine-associated inflammatory events, oxidative stress, and other pathophysiological processes such as hypoferremia and zinc deficiency. Maternal administration of the viral mimic polyriboinosinic-polyribocytidylic acid (poly(I:C)) in mice produces several behavioral phenotypes in adult offspring of relevance to autism spectrum disorder (ASD) and other neurodevelopmental disorders...
2017: Molecular Autism
https://www.readbyqxmd.com/read/28302198/-association-between-maternal-folate-supplementation-during-pregnancy-and-the-risk-of-autism-spectrum-disorder-in-the-offspring-a-meta-analysis
#4
Xiao-Fang Yu, Mei Li, Yan Zheng
OBJECTIVE: To quantitatively and comprehensively investigate the association between maternal folate supplementation during pregnancy and the risk of autism spectrum disorder (ASD) in the offspring. METHODS: PubMed, Embase, Scopus, Cochrane Library, EBSCO, CNKI, Wanfang Data, VIP Database, and Chinese Biomedical Database were searched to collect the articles on maternal folate supplementation during pregnancy and the risk of ASD in children. Odds ratio (OR) and 95% confidence interval (CI) were used to determine the effect size...
March 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/28260505/copy-number-variations-with-isolated-fetal-ventriculomegaly
#5
P Hu, Y Wang, R Sun, L Cao, X Chen, C Liu, C Luo, D Ma, W Wang, X Fu, W Shi, S Yi, K Zhang, H Liu, Z Xu
BACKGROUND: Copy Number Variations (CNVs) are an important genetic cause of a number of neurodevelopmental disorders (NDs). However, the association between CNVs and the development and prognosis of isolated fetal ventriculomegaly (IMV) is unclear. OBJECTIVES: To investigate possible associations between CNVs and the development of fetal IMV. METHODS: This retrospective study recruited 154 subjects with ultrasound-confirmed fetal IMV and 190 subjects in a control cohort who underwent a high-risk prenatal serum screening program...
March 3, 2017: Current Molecular Medicine
https://www.readbyqxmd.com/read/28254236/recurrent-2q13-microduplication-encompassing-mall-nphp1-rgpd6-and-bub1-associated-with-autism-spectrum-disorder-intellectual-disability-and-liver-disorder
#6
Chih-Ping Chen, Shuan-Pei Lin, Chung-Lin Lee, Schu-Rern Chern, Peih-Shan Wu, Yen-Ni Chen, Shin-Wen Chen, Wayseen Wang
OBJECTIVE: We present recurrent 2q13 microduplication in a family with autism spectrum disorder (ASD), intellectual disability, and liver disorder. CASE REPORT: A 45-year-old woman and her 52-year-old husband were referred for genetic counseling because of mental and liver disorders in their two sons and their planning for prenatal diagnosis of familial disorders in the future pregnancy. She and her husband were normal and healthy, but their 21-year-old elder son had suffered from ASD, severe intellectual disability, poor motor function, liver cirrhosis, and esophageal varices, and their 19-year-old younger son had suffered from ASD, mild intellectual disability, poor balance and coordination, hepatosplenomegaly, fatty liver, and mild liver cirrhosis...
February 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28251181/maternal-immunoreactivity-to-herpes-simplex-virus-2-and-risk-of-autism-spectrum-disorder-in-male-offspring
#7
Milada Mahic, Siri Mjaaland, Hege Marie Bøvelstad, Nina Gunnes, Ezra Susser, Michaeline Bresnahan, Anne-Siri Øyen, Bruce Levin, Xiaoyu Che, Deborah Hirtz, Ted Reichborn-Kjennerud, Synnve Schjølberg, Christine Roth, Per Magnus, Camilla Stoltenberg, Pål Surén, Mady Hornig, W Ian Lipkin
Maternal infections during pregnancy are associated with risk of neurodevelopmental disorders, including autism spectrum disorders (ASDs). Proposed pathogenetic mechanisms include fetal infection, placental inflammation, and maternal cytokines or antibodies that cross the placenta. The Autism Birth Cohort comprises mothers, fathers, and offspring recruited in Norway in 1999 to 2008. Through questionnaire screening, referrals, and linkages to a national patient registry, 442 mothers of children with ASD were identified, and 464 frequency-matched controls were selected...
January 2017: MSphere
https://www.readbyqxmd.com/read/28241914/comprehensive-description-of-comorbidity-for-autism-spectrum-disorder-in-a-general-population
#8
David Cawthorpe
CONTEXT: Few published studies of autism spectrum disorder (ASD) and comorbidity are population based. OBJECTIVE: To describe the comorbidity of ASD and disorders listed in the main classes of the International Classification of Diseases, Ninth Revision (ICD-9) in a general population. DESIGN: Direct physician billing data for the city of Calgary, Alberta, Canada, for the treatment of any presenting concern in the Calgary Health Zone (n = 763,449) from 1994 to 2009 were extracted...
2017: Permanente Journal
https://www.readbyqxmd.com/read/28235828/independent-maternal-and-fetal-genetic-effects-on-mid-gestational-circulating-levels-of-environmental-pollutants
#9
Michela Traglia, Lisa A Croen, Kristen Lyall, Gayle C Windham, Marty Kharrazi, Gerald N DeLorenze, Anthony R Torres, Lauren A Weiss
Maternal exposure to environmental pollutants could affect fetal brain development and increase autism spectrum disorder (ASD) risk in conjunction with differential genetic susceptibility. Organohalogen congeners measured in maternal mid-pregnancy blood samples have recently shown significant, but negative associations with offspring ASD outcome. We report the first large scale maternal and fetal genetic study of the mid-pregnancy serum levels of a set of 21 organohalogens in a subset of 790 genotyped women and 764 children collected in California by the Early Markers for Autism (EMA) Project...
February 24, 2017: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/28217829/vitamin-d-and-autism-what-s-new
#10
REVIEW
John Jacob Cannell
An increasing amount of evidence points to the possibility that gestational and early childhood vitamin D deficiency [25(OH)D < 40 ng/ml] cause some cases of autism. Vitamin D is metabolized into a seco-steroid hormone that regulates about 3% of the 26,000 genes in the coding human genome. It is also a neurosteroid that is active in brain development, having effects on cellular proliferation, differentiation, calcium signaling, neurotrophic and neuroprotective actions; it also appears to have an effect on neurotransmission and synaptic plasticity...
February 20, 2017: Reviews in Endocrine & Metabolic Disorders
https://www.readbyqxmd.com/read/28209774/methyl-donor-supplementation-alters-cognitive-performance-and-motivation-in-female-offspring-from-high-fat-diet-fed-dams
#11
Sarah E McKee, Nicola M Grissom, Christopher T Herdt, Teresa M Reyes
During gestation, fetal nutrition is entirely dependent on maternal diet. Maternal consumption of excess fat during pregnancy has been linked to an increased risk of neurologic disorders in offspring, including attention deficit/hyperactivity disorder, autism, and schizophrenia. In a mouse model, high-fat diet (HFD)-fed offspring have cognitive and executive function deficits as well as whole-genome DNA and promoter-specific hypomethylation in multiple brain regions. Dietary methyl donor supplementation during pregnancy or adulthood has been used to alter DNA methylation and behavior...
February 16, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28168960/sex-specific-neurodevelopmental-programming-by-placental-insulin-receptors-on-stress-reactivity-and-sensorimotor-gating
#12
Stefanie L Bronson, Jennifer C Chan, Tracy L Bale
BACKGROUND: Diabetes, obesity, and overweight are prevalent pregnancy complications that predispose offspring to neurodevelopmental disorders, including autism, attention-deficit/hyperactivity disorder, and schizophrenia. Although male individuals are three to four times more likely than female individuals to develop these disorders, the mechanisms driving the sex specificity of disease vulnerability remain unclear. Because defective placental insulin receptor (InsR) signaling is a hallmark of pregnancy metabolic dysfunction, we hypothesized that it may be an important contributor and novel mechanistic link to sex-specific neurodevelopmental changes underlying disease risk...
December 30, 2016: Biological Psychiatry
https://www.readbyqxmd.com/read/28137374/maternal-immune-activation-and-autism-spectrum-disorder-from-rodents-to-nonhuman-and-human-primates
#13
REVIEW
Milo Careaga, Takeshi Murai, Melissa D Bauman
A subset of women who are exposed to infection during pregnancy have an increased risk of giving birth to a child who will later be diagnosed with a neurodevelopmental or neuropsychiatric disorder. Although epidemiology studies have primarily focused on the association between maternal infection and an increased risk of offspring schizophrenia, mounting evidence indicates that maternal infection may also increase the risk of autism spectrum disorder. A number of factors, including genetic susceptibility, the intensity and timing of the infection, and exposure to additional aversive postnatal events, may influence the extent to which maternal infection alters fetal brain development and which disease phenotype (autism spectrum disorder, schizophrenia, other neurodevelopmental disorders) is expressed...
March 1, 2017: Biological Psychiatry
https://www.readbyqxmd.com/read/28129495/the-association-between-antenatal-exposure-to-selective-serotonin-reuptake-inhibitors-and-autism-a-systematic-review-and-meta-analysis
#14
Hilary K Brown, Neesha Hussain-Shamsy, Yona Lunsky, Cindy-Lee E Dennis, Simone N Vigod
OBJECTIVE: This systematic review and meta-analysis examines the relationship between antenatal selective serotonin reuptake inhibitor (SSRI) exposure and child autism, with specific attention to maternal mental illness (MMI) as a potential confounding factor. DATA SOURCES: We searched MEDLINE, Embase, PsycINFO, and CINAHL from database inception to January 28, 2016. STUDY SELECTION: Keywords included terms for SSRIs, pregnancy, and autism...
January 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28127411/protein-restricted-diet-during-pregnancy-after-insemination-alters-behavioral-phenotypes-of-the-progeny
#15
Tamio Furuse, Kunio Miyake, Takashi Kohda, Hideki Kaneda, Takae Hirasawa, Ikuko Yamada, Tomoko Kushida, Misho Kashimura, Kimio Kobayashi, Fumitoshi Ishino, Takeo Kubota, Shigeharu Wakana
BACKGROUND: Epidemiological studies suggest that hyponutrition during the fetal period increases the risk of mental disorders such as attention deficit hyperactivity disorder and autism-spectrum disorder, which has been experimentally supported using animal models. However, previous experimental hyponutrition or protein-restricted (PR) diets affected stages other than the fetal stage, such as formation of the egg before insemination, milk composition during lactation, and maternal nursing behavior...
2017: Genes & Nutrition
https://www.readbyqxmd.com/read/28102992/environmental-factors-associated-with-autism-spectrum-disorder-a-scoping-review-for-the-years-2003-2013
#16
M Ng, J G de Montigny, M Ofner, M T Do
INTRODUCTION: The number of children diagnosed with autism spectrum disorder (ASD) has been rapidly rising in the past decade. The etiology of this disorder, however, is largely unknown, although the environmental relative to the genetic contribution is substantial. We conducted a scoping review to comprehensively assess the current state of knowledge of the environmental factors present from preconception to early life associated with ASD, and to identify research gaps. METHODS: We searched electronic databases MEDLINE, PsycINFO and ERIC for articles on potential risk factors or protective factors from the physical and social environments associated with ASD and its subclassifications published between 1 January, 2003, and 12 July, 2013...
January 2017: Health Promotion and Chronic Disease Prevention in Canada
https://www.readbyqxmd.com/read/28102228/maternal-immune-activation-causes-behavioral-impairments-and-altered-cerebellar-cytokine-and-synaptic-protein-expression
#17
Gurudutt Pendyala, Shinnyi Chou, Yoosun Jung, Pierluca Coiro, Elizabeth Spartz, Ragunathan Padmashri, Ming Li, Anna Dunaevsky
Emerging epidemiology studies indicate that maternal immune activation (MIA) resulting from inflammatory stimuli such as viral or bacterial infections during pregnancy serves as a risk factor for multiple neurodevelopmental disorders including autism spectrum disorders and schizophrenia. Although alterations in the cortex and hippocampus of MIA offspring have been described, less evidence exists on the impact on the cerebellum. Here, we report altered expression of cytokines and chemokines in the cerebellum of MIA offspring, including increase in the neuroinflammatory cytokine TNF-α and its receptor TNFR1...
January 19, 2017: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28099978/association-of-perinatal-risk-factors-with-autism-spectrum-disorder
#18
Darios Getahun, Michael J Fassett, Morgan R Peltier, Deborah A Wing, Anny H Xiang, Vicki Chiu, Steven J Jacobsen
Objective To examine the association between exposures to perinatal factors and autism spectrum disorders (ASD). Study Design A retrospective cohort study of ASD among children born in Kaiser Permanente Southern California hospitals between 1991 and 2009 (n = 594,638). Medical records were used to determine exposure to perinatal (antepartum and intrapartum) complications. ASD was diagnosed using DSM-IV criteria. Multivariable Cox regression was used to estimate hazard ratios (HRs). Result Children with ASD were more likely to be exposed to perinatal complications (HR = 1...
February 2017: American Journal of Perinatology
https://www.readbyqxmd.com/read/28034801/testing-the-correlation-between-experimentally-induced-hypothyroidism-during-pregnancy-and-autistic-like-symptoms-in-the-rat-offspring
#19
Francesca Melancia, Michela Servadio, Sara Schiavi, Patrizia Campolongo, Alexandre Giusti-Paiva, Viviana Trezza
Thyroid hormones are important for the development of the central nervous system. Since the fetal thyroid gland is not functioning until mid-gestation, transport of maternal thyroid hormones across the placenta is essential during the early phases of gestation. Maternal thyroid deficiency has been associated with a higher incidence of neurodevelopmental disorders in the newborns. The relationship between maternal hypothyroidism and the onset of autism spectrum disorders (ASD) in the offspring, however, is still debated...
March 15, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28031963/folic-acid-supplementation-what-is-new-fetal-obstetric-long-term-benefits-and-risks
#20
REVIEW
Hind N Moussa, Susan Hosseini Nasab, Ziad A Haidar, Sean C Blackwell, Baha M Sibai
The association between folic acid supplementation, prior to conception and/or during pregnancy and pregnancy outcomes, has been the subject of numerous studies. The worldwide recommendation of folic acid is at least 0.4 mg daily for all women of reproductive age, and 4-5 mg in high-risk women. In addition, evidence shows that folic acid supplementation could modulate other adverse pregnancy outcomes, specifically, in pregnancies complicated by seizure disorders, preeclampsia, anemia, fetal growth restriction and autism...
June 2016: Future Science OA
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