Autism is increasing-but why? Birth defect prevention trials were based on the teleological assumption that folic acid could prevent neural tube defects without consideration of long-term effects, some of which could be beneficial, some of which might be harmful. We therefore ask-Is it impossible to look again at these cohorts?
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http://dx.doi.org/10.1007/s10545-009-1093-0 | DOI Listing |
CNS Spectr
December 2024
Department of Psychiatry, University of Toronto, Toronto, ON, Canada.
Background: Recent guidance from UK health authorities strongly cautions against the use of valproic acid (VPA) in persons under 55 because of reevaluated risk of teratogenicity.
Objective: To summarize the extant literature documenting VPA-associated anatomical, behavioral, and cognitive teratogenicity.
Method: Pubmed, Medline, Cochrane Library, PsychInfo, Embase, Scopus, Web of Science, and Google Scholar were searched in accordance with PRISMA guidelines.
Int J Dev Neurosci
February 2025
Yong Loo Lin School of Medicine, National University of Singapore, Singapore.
The folate cycle has been implicated in the pathophysiology of autism due to its role in the glutathione oxidative stress pathway, amino acid and DNA methylation reactions, and neurotransmitter synthesis pathway. Previous research on folinic acid supplementation in autistic children has suggested potential benefits. The primary aim of this pilot study was to determine the safety, feasibility and efficacy of oral folinic acid in improving communication and behaviour in autistic children.
View Article and Find Full Text PDFCells
November 2024
Psychology, Santa Barbara City College, Santa Barbara, CA 93109, USA.
Autism spectrum disorder (ASD) is a neurodevelopmental disability that presents significant challenges in communication and behavior. ASD prevalence exceeds 2% among eight-year-old children and is at similar levels globally. We propose that critical periods during fetal development and early postnatal years establish the conditions for either neurotypical development or the emergence of autism through mechanisms that influence immune function or delay neuronal development.
View Article and Find Full Text PDFMethylenetetrahydrofolate reductase mutations refer to genetic variations in the methylenetetrahydrofolate reductase enzyme, which plays an important role in folate metabolism. Folate is essential for neural development and signalling. Children with autism spectrum disorder have atypical neural signals compared with control.
View Article and Find Full Text PDFJ Assist Reprod Genet
December 2024
Laboratoire Clément, Avenue d'Eylau, 75016, Paris, France.
Purpose: In our practice, testing hypo-fertile patients for circulating homocysteine (Hcy) and the two principal MTHFR SNPs (677C > T and 1298A > C) has been routine for the past 7 years. Couples carrying a genetic background known to be associated with the disease were proposed treatment regimens consisting of 5-methyl tetrahydrofolate (5-MTHF) together with nutritional support of the one-carbon cycle (1-CC). Some patients preferred to continue with folic acid (FA) as prescribed by their referring gynecologist/obstetrician: this gave us the opportunity to compare outcomes between the two groups of patients.
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