Neuroimmune mechanisms in autism etiology - untangling a complex problem using human cellular models DOI Creative Commons
Janay M. Vacharasin, Joseph Ward, Mikayla McCord

et al.

Oxford Open Neuroscience, Journal Year: 2024, Volume and Issue: 3

Published: Jan. 1, 2024

Autism spectrum disorder (ASD) affects 1 in 36 people and is more often diagnosed males than females. Core features of ASD are impaired social interactions, repetitive behaviors deficits verbal communication. a highly heterogeneous heritable disorder, yet its underlying genetic causes account only for up to 80% the cases. Hence, subset cases could be influenced by environmental risk factors. Maternal immune activation (MIA) response inflammation during pregnancy, which can lead increased inflammatory signals fetus. Inflammatory cross placenta blood brain barriers affecting fetal development. Epidemiological animal studies suggest that MIA contribute etiology. However, human mechanistic have been hindered lack experimental systems replicate impact Therefore, mechanisms altered pre-natal development, underlie pathogenesis largely understudied. The advent cellular models with induced pluripotent stem cell (iPSC) organoid technology closing this gap knowledge providing both access molecular manipulations culturing capability tissue would otherwise inaccessible. We present an overview multiple levels evidence from clinical, epidemiological, provide potential link between higher inflammation. More importantly, we discuss how cell-derived may constitute ideal system mechanistically interrogate effect early stages

Language: Английский

Risk factors diagnosis prognosis and treatment of autism DOI
Nader Al‐Dewik

Frontiers in bioscience, Journal Year: 2020, Volume and Issue: 25(9), P. 1682 - 1717

Published: Jan. 1, 2020

The prevalence rate of Autism Spectrum Disorder (ASD) has reached over 1% world-wide prompting governments, health providers and schools to develop programs policies address this challenging disorder. Here, we review the cause(s), as well environmental factors, genetic mutations, neural pathways that are implicated in ASD. We also discuss criteria commonly used for diagnosis ASD future clinical testing can aid Finally, provide practical steps be reduce incidence severity ASD, prognosis treatment autism.

Language: Английский

Citations

68

Redox/methylation mediated abnormal DNA methylation as regulators of ambient fine particulate matter-induced neurodevelopment related impairment in human neuronal cells DOI Creative Commons

Hongying Wei,

Fan Liang,

Ge Meng

et al.

Scientific Reports, Journal Year: 2016, Volume and Issue: 6(1)

Published: Sept. 14, 2016

Abstract Fine particulate matter (PM 2.5 ) has been implicated as a risk factor for neurodevelopmental disorders including autism in children. However, the underlying biological mechanism remains unclear. DNA methylation is suggested to be fundamental neuronal responses environmental cues. We prepared whole particle of PM ), water-soluble extracts (Pw), organic (Po) and carbon core component (Pc) characterized their chemical constitutes. found that induced significant redox imbalance, decreased levels intercellular methyl donor S-adenosylmethionine caused global hypomethylation. Furthermore, exposure triggered gene-specific promoter hypo- or hypermethylation abnormal mRNA expression candidate genes. -induced regions synapse related genes were associated with decreases protein expression. The inhibiting effects antioxidative reagents, methylation-supporting agent methyltransferase inhibitor demonstrated involvement redox/methylation patterns synaptic above generally followed sequence ≥ Pwo > Po Pw Pc. Our results novel epigenetic toxicity air pollution, eliminating components could mitigate neurotoxicity .

Language: Английский

Citations

62

Association of Maternal Autoimmune Disease With Attention-Deficit/Hyperactivity Disorder in Children DOI
Timothy C. Nielsen, Natasha Nassar, Antonia Shand

et al.

JAMA Pediatrics, Journal Year: 2021, Volume and Issue: 175(3), P. e205487 - e205487

Published: Jan. 19, 2021

Maternal autoimmune disease has been associated with increased risk of neurodevelopmental disorders in offspring, but few studies have assessed the association attention-deficit/hyperactivity disorder (ADHD).To examine between maternal and ADHD within a population-based cohort combine results subsequent systematic review meta-analysis.A study was conducted singleton children born at term gestation (37-41 weeks) New South Wales, Australia, from July 1, 2000, to December 31, 2010, followed up until end 2014; evaluated articles MEDLINE, Embase, Web Science databases identify all published before November 20, 2019. A total 12 610 exposed were propensity score matched (1:4) 50 440 unexposed children, for 63 050. child considered if they had (1) an authorization or filled prescription stimulant treatment (2) hospital diagnosis ADHD. Children linked first event 3 years age excluded. Data analyzed January 13 April 2020.One more diagnoses admission records 2012. Thirty-five conditions together individually.The main outcome identified data records. Multivariable Cox regression used assess adjusted sex. Pooled hazard ratios (HRs) calculated using random-effects meta-analysis inverse-variance weights each exposure reported by 2 studies.In analysis, 831 718 singleton, infants mothers (mean [SD] age, 29.8 [5.6] years) assessed. Of 767 (1.5%) who diagnosis, control infants, 050 infants. In this cohort, any offspring (HR, 1.30; 95% CI 1.15-1.46), as type 1 diabetes 2.23; CI, 1.66-3.00), psoriasis 1.66; 1.02-2.70), rheumatic fever carditis 1.75; 1.06-2.89). Five (including present study) included meta-analysis. Any (2 studies: HR, 1.20; 1.03-1.38), (4 1.53; 1.27-1.85), hyperthyroidism (3 1.15; 1.06-1.26), 1.31; 1.10-1.56) ADHD.In study, diseases among children. These findings suggest possible shared genetic vulnerability potential role immune activation expression Future measuring activity, modifiers, medication use are required better understand mechanisms underlying association.

Language: Английский

Citations

51

Regulation of microglia population dynamics throughout development, health, and disease DOI
Brady P. Hammond,

Rupali Manek,

Bradley J. Kerr

et al.

Glia, Journal Year: 2021, Volume and Issue: 69(12), P. 2771 - 2797

Published: June 11, 2021

The dynamic expansions and contractions of the microglia population in central nervous system (CNS) to achieve homeostasis are likely vital for their function. Microglia respond injury or disease but also help guide neurodevelopment, modulate neural circuitry throughout life, direct regeneration. Throughout these processes, density changes, as does volume area that each surveys. Given responsible sensing subtle alterations environment, a change could affect capacity mobilize rapidly. In this review, we attempt synthesize current literature on ligands conditions promote microglial proliferation across development, adulthood, neurodegenerative conditions. display an impressive proliferative during development diseases is almost completely absent at homeostasis. However, appropriate function state critically dependent fluctuations primarily induced by proliferation. Proliferation natural response insult often serves neuroprotective functions. contrast, inappropriate proliferation, whether too much little, precipitates undesirable consequences health. Thus, tightly regulated ensure immune cells can execute diverse

Language: Английский

Citations

44

Neuroimmune mechanisms in autism etiology - untangling a complex problem using human cellular models DOI Creative Commons
Janay M. Vacharasin, Joseph Ward, Mikayla McCord

et al.

Oxford Open Neuroscience, Journal Year: 2024, Volume and Issue: 3

Published: Jan. 1, 2024

Autism spectrum disorder (ASD) affects 1 in 36 people and is more often diagnosed males than females. Core features of ASD are impaired social interactions, repetitive behaviors deficits verbal communication. a highly heterogeneous heritable disorder, yet its underlying genetic causes account only for up to 80% the cases. Hence, subset cases could be influenced by environmental risk factors. Maternal immune activation (MIA) response inflammation during pregnancy, which can lead increased inflammatory signals fetus. Inflammatory cross placenta blood brain barriers affecting fetal development. Epidemiological animal studies suggest that MIA contribute etiology. However, human mechanistic have been hindered lack experimental systems replicate impact Therefore, mechanisms altered pre-natal development, underlie pathogenesis largely understudied. The advent cellular models with induced pluripotent stem cell (iPSC) organoid technology closing this gap knowledge providing both access molecular manipulations culturing capability tissue would otherwise inaccessible. We present an overview multiple levels evidence from clinical, epidemiological, provide potential link between higher inflammation. More importantly, we discuss how cell-derived may constitute ideal system mechanistically interrogate effect early stages

Language: Английский

Citations

7