Gut microbiota mediated regulation of vitamin B homeostasis in autism spectrum disorders

Area of Science:

• Neuroscience
• Microbiology
• Genetics

Background:

• Autism spectrum disorder (ASD) affects approximately 1% of children globally, with rising prevalence.
• The gut microbiota, immune system, and brain-gut axis significantly influence ASD symptom severity.
• Gut dysbiosis, characterized by altered microbial composition and reduced diversity, is prevalent in ASD, often accompanied by inflammation and increased intestinal permeability.

Purpose of the Study:

• To review the impact of gut microbiota on DNA methylation and B vitamin synthesis in ASD.
• To examine etiological factors contributing to dysbiosis in ASD.
• To identify potential therapeutic avenues for ASD management.

Main Methods:

• Literature review of studies investigating gut microbiota in ASD.
• Analysis of research on B vitamin synthesis and DNA methylation in relation to gut health.
• Examination of etiological factors and their link to dysbiosis.

Main Results:

• Children with ASD often exhibit gut dysbiosis, affecting B vitamin production (e.g., cobalamin, folate) crucial for DNA epigenetic modifications.
• A significant percentage (50%) of individuals with ASD experience vitamin B deficiencies.
• Dysbiosis can be exacerbated by feeding difficulties common in ASD, further impacting gut health and nutrient synthesis.

Conclusions:

• Gut microbiota dysbiosis plays a role in ASD pathogenesis through altered DNA methylation and B vitamin synthesis.
• Investigating probiotics, postbiotics, and vitamin B supplementation presents a promising avenue for future ASD therapeutic strategies.
• Further research is warranted to elucidate the complex interplay between gut microbiota and ASD development and to validate targeted interventions.