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Related Experiment Videos

Serotonin metabolism is pellagra.

T C Raghuram, K Krishnaswamy

    Archives of Neurology
    |October 1, 1975
    PubMed
    Summary
    This summary is machine-generated.

    Pellagra patients show reduced serotonin (5-HT) levels in platelets and lower urinary 5-hydroxyindoleacetic acid (5-HIAA), indicating decreased brain serotonin activity.

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    Area of Science:

    • Neuroscience
    • Biochemistry
    • Clinical Medicine

    Background:

    • Altered mental status is a frequent symptom in pellagra.
    • Serotonin (5-hydroxytryptamine, 5-HT) is a key neurohormone influencing mental state.

    Purpose of the Study:

    • To investigate the relationship between mental status in pellagra and serotonin levels.
    • To quantify serotonin and its metabolite levels in pellagra patients.

    Main Methods:

    • Measured platelet serotonin (5-HT) concentration.
    • Determined urinary and cerebrospinal fluid (CSF) levels of 5-hydroxyindoleacetic acid (5-HIAA).
    • Compared levels in pellagrins versus normal subjects.

    Main Results:

    • Pellagrins exhibited significantly reduced platelet 5-HT concentrations.

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  • Urinary 5-HIAA excretion was lower than normal in pellagrins.
  • Cerebrospinal fluid (CSF) 5-HIAA levels were also decreased in pellagra patients.

    • Conclusions:

    • Findings suggest a systemic decrease in serotonin (5-HT) metabolism in pellagra.
    • Reduced 5-HIAA in CSF indicates diminished serotonin functional activity in the brain.
    • This neurochemical alteration likely contributes to the altered mental status observed in pellagra.