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Related Experiment Videos

Urinary bladder innervation in children.

C M Kullendorff, M Elmér, P Alm

    Journal of Pediatric Surgery
    |March 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    This study investigated the nerve supply and muscle responses in children's bladders, finding acetylcholine as a key neurotransmitter and a novel beta-receptor. Terodiline effectively inhibited bladder muscle activity.

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    Area of Science:

    • Urology
    • Neuropharmacology
    • Pediatric Surgery

    Background:

    • Understanding the bladder's neuromuscular control is crucial for treating conditions like vesicoureteric reflux.
    • Previous research has identified various neurotransmitters in adult bladders, but pediatric data is less comprehensive.

    Purpose of the Study:

    • To characterize the neurochemical and pharmacological properties of the detrusor muscle and distal ureter in children.
    • To investigate the effects of specific drugs on bladder muscle activity in pediatric samples.

    Main Methods:

    • Histochemical and immunohistochemical analysis of muscle strips from pediatric bladder and ureter.
    • Electrical nerve stimulation in an organ bath to assess muscle contractility.
    • Pharmacological testing with agents like imipramine and terodiline.

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    Main Results:

    • Rich cholinergic innervation identified, with acetylcholine as the primary excitatory neurotransmitter.
    • Sparse adrenergic innervation, with no contractile alpha-adrenoceptors but beta-receptor-mediated relaxation (possibly a novel type).
    • Vasoactive intestinal peptide (VIP) nerves present, suggesting a modulatory role; imipramine showed no anticholinergic effect, while terodiline inhibited all muscle activity.

    Conclusions:

    • Pediatric bladder muscle is primarily controlled by cholinergic nerves.
    • A novel beta-receptor may be involved in bladder relaxation.
    • Terodiline demonstrates potential as an effective treatment for diurnal enuresis due to its potent muscle inhibitory effects.