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Colonic dysfunction in multiple sclerosis.

M E Glick, H Meshkinpour, S Haldeman

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    Multiple sclerosis patients with severe constipation show abnormal colonic function. Studies reveal central nervous system lesions impacting visceral nerves, leading to altered colonic motor and myoelectrical activity.

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    Area of Science:

    • Neuroscience
    • Gastroenterology
    • Urology

    Background:

    • Multiple sclerosis (MS) is a central nervous system (CNS) disease.
    • MS frequently causes urinary symptoms and severe constipation.
    • The pathophysiology of these visceral symptoms in MS is not fully understood.

    Purpose of the Study:

    • To investigate the pathophysiology of urinary and severe constipation symptoms in advanced multiple sclerosis.
    • To correlate colonic function with central and peripheral nervous system studies.
    • To identify features of visceral neuropathy in MS patients.

    Main Methods:

    • Studied colonic motor and myoelectrical activity in 7 MS patients and 10 controls.
    • Performed colonic volume-pressure relationships (colonometrograms).
    • Correlated data with cystometry and somatosensory nervous system electrophysiology.

    Main Results:

    • MS patients showed electrophysiologic evidence of CNS lesions.
    • Abnormal cystometrograms indicated visceral CNS dysfunction in MS patients.
    • MS patients had a more rapid colonic pressure rise (p<0.01) and absent postprandial colonic activity (p<0.01) compared to controls.

    Conclusions:

    • Abnormal colonometrograms and absent postprandial colonic responses may indicate visceral neuropathy in advanced MS.
    • These findings suggest a link between CNS lesions and gastrointestinal dysfunction in MS.
    • Further research is warranted to explore therapeutic strategies for visceral symptoms in MS.