Observational studyInternational dental journal2026
Salivary MicroRNA Reflects Neurodevelopment and Oral Health Traits in Children With Autism.
Observational study in International dental journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
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Authors and funding
5 authors.
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Abstract
INTRODUCTION AND
aimsAutism spectrum disorder (ASD) is a multifactorial neurodevelopmental condition associated with poor oral health in children. ASD lacks sensitive, non-invasive diagnostic tools, and the relationship between neurodevelopment and oral health remains unclear. This observational study aimed to identify salivary microRNAs (miRNAs) differentially expressed between children with ASD and healthy controls and to determine whether these profiles are associated with dental caries and periodontal status.
methodsUnstimulated saliva was collected from 26 children with ASD and 20 healthy controls and subjected to small RNA sequencing. Differentially expressed miRNAs were identified and functionally annotated. Oral health was assessed using dmft/DMFT and periodontal indices, and associations between miRNA expression patterns and clinical parameters were evaluated.
resultsA total of 125 salivary miRNAs were differentially expressed between ASD and control groups (FDR < 0.05). Principal component analysis showed clear group separation, with PC1 accounting for 46.5% of total variance. Several dysregulated miRNAs were linked to neurodevelopmental and immune regulatory pathways and overlapped with neurological and inflammatory conditions. After miRDB/SFARI filtering, 40 ASD-relevant miRNAs were prioritized, including 21 upregulated and 19 downregulated candidates; representative examples were hsa-miR-145-5p (log2FC 2.11, adjusted P = 1.74E-08) and hsa-miR-200a-5p (log2FC -0.58, adjusted P = 6.11E-06). Children with ASD had higher dmft/DMFT scores and poorer periodontal/behavioural outcomes, with dmft/DMFT differing significantly between groups (P = .02). In exploratory pooled-cohort regression analysis, miR-151a-3p and behaviour remained significant predictors of dmft/DMFT (adjusted R
conclusionsChildren with ASD exhibit a distinct salivary miRNA profile with increased caries burden and gingival inflammation, indicating shared molecular influences on neurodevelopment and oral disease susceptibility. CLINICAL RELEVANCE: Salivary miRNAs offer a non-invasive biomarker platform to support earlier ASD identification, individualized preventive dental strategies, and interdisciplinary management of this high-risk paediatric population.
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