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Related Experiment Videos

[Neuroendocrinologic studies on autism].

R Aihara, T Hashimoto

    No to Hattatsu = Brain and Development
    |March 1, 1989
    PubMed
    Summary
    This summary is machine-generated.

    Autism may involve abnormal pituitary hormone secretion, particularly TSH (thyroid-stimulating hormone). Many autistic children exhibit disrupted 24-hour hormone rhythms, suggesting endocrine dysfunction in autism spectrum disorder.

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    Area of Science:

    • Neuroendocrinology
    • Developmental Neuroscience
    • Pediatric Endocrinology

    Background:

    • Autism's etiology remains unclear, with emerging theories linking it to neurotransmitter imbalances like serotonin and dopamine.
    • Hormone secretion is closely interconnected with monoamine function, suggesting a potential role for endocrine dysregulation in autism.

    Observation:

    • This study investigated pituitary hormone secretion (GH, PRL, TSH, cortisol, LH, FSH) in children with autism compared to controls with attention deficit disorder (ADD) and mental retardation (MR).
    • Hormone levels were assessed via provocation tests (insulin, TRH, LH-RH) and 24-hour secretion rhythms were analyzed.
    • Autistic children showed significantly lower TSH (thyroid-stimulating hormone) peak responses to TRH compared to MR, with some exhibiting borderline responses.

    Findings:

    Related Experiment Videos

    • Autistic children demonstrated significantly lower TSH peak values and delta TSH following TRH stimulation compared to children with mental retardation.
    • Eleven out of 14 autistic children investigated displayed abnormal 24-hour secretion rhythms for hormones like GH, PRL, cortisol, LH, and FSH.
    • Peak GH and delta GH responses to insulin were significantly higher in ADD compared to MR, but this was not directly compared to autism in the provided text.

    Implications:

    • The findings suggest potential pituitary-glandular dysfunction and disrupted circadian hormone regulation in autism spectrum disorder.
    • Abnormalities in TSH secretion and 24-hour hormone rhythms may represent a biological marker or contributing factor in autism.
    • Further research into neuroendocrine pathways could offer novel therapeutic targets for managing autism symptoms.