This study systematically reviews the progress of acupuncture in treating autism spectrum disorder (ASD), covering its historical origins, technological innovations, proposed hypotheses, mechanistic explorations, clinical validation, and pathways for translational research.Tracing back to classical Chinese medical records from the Sui dynasty that described symptoms resembling severe ASD, such as mental obstruction and delayed speech, the study focuses on how acupuncture activates peripheral-to-central neural pathways, promoting the release of pro-social neurotransmitters to improve brain development in individuals with ASD within the framework of modern neuroscience.Building upon preclinical findings, our team developed a transcutaneous electrical acupoint stimulation (TEAS) protocol as a standardized, noninvasive adaptation of traditional acupuncture.The protocol targets four key acupoints with optimized stimulation parameters, including Hegu (LI4), Neiguan (PC6), Zusanli (ST36), and Sanyinjiao (SP6).Multicenter clinical trials demonstrate that integrating TEAS to standardized behavioral therapy significantly enhances therapeutic efficacy, particularly among children with aloof/passive social phenotypes.Consistent changes in peripheral plasma levels of oxytocin (OXT) and arginine vasopressin (AVP), alongside multi-modal brain imaging (structural MRI, resting-state fMRI, and DTI) support the hypothesis that TEAS acts via the OXT pathway to promote sensory integration, enhance social motivation, and reduce anxiety.Clinical assessments and parental follow-up data confirmed the consistent and reproducible benefits.Finally, we further outline a translational roadmap integrating phenotype-based assessment, individualized stimulation parameter optimization, multimodal biomarker systems, and home-based implementation.Large-scale, multicenter, stratified, and multi-omic studies are further warranted to validate generalizability and further elucidate the causal molecular-to-network mechanisms underlying TEAS-mediated neurobehavioral improvement.
Key words
transcutaneous electrical acupoint stimulation /
autism spectrum disorder /
social subtyping /
functional magnetic resonance imaging /
diffusion tensor imaging
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