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Related Experiment Videos

Renal pathology associated with lithium therapy.

R G Walker, J P Dowling, D Alcorn

    Pathology
    |October 1, 1983
    PubMed
    Summary

    Lithium therapy for severe affective disorders can cause a distinct kidney lesion in the tubules and collecting ducts, characterized by glycogen accumulation. This finding was observed in patients currently on lithium but not in those who stopped treatment.

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    Area of Science:

    • Nephrology
    • Psychiatry
    • Cell Biology

    Background:

    • Lithium is a common treatment for severe affective disorders.
    • Long-term lithium use has been associated with renal abnormalities.
    • The specific renal pathology induced by lithium requires further characterization.

    Purpose of the Study:

    • To investigate the renal histopathological changes associated with lithium therapy.
    • To identify specific lesions in patients on maintenance lithium.
    • To determine the temporal relationship between lithium treatment and observed renal changes.

    Main Methods:

    • Renal biopsies from patients on maintenance lithium therapy (n=50) and previously on lithium (n=5) were examined.
    • Light and ultrastructural techniques were used to analyze cellular and tissue morphology.

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  • Prospective studies monitored renal changes after commencing lithium treatment.
  • Main Results:

    • A distinctive lesion was identified in the distal convoluted tubules and collecting ducts of patients currently on lithium.
    • This lesion featured cytoplasmic vacuolation, swelling, and accumulation of PAS-positive material, confirmed as particulate glycogen.
    • The 'lithium-associated' lesion was absent in patients who had discontinued lithium therapy.
    • Glycogen accumulation was observed within days of starting lithium treatment.

    Conclusions:

    • Maintenance lithium therapy induces a specific renal lesion characterized by glycogen accumulation in the distal tubules and collecting ducts.
    • This lesion is directly associated with active lithium treatment.
    • The clinical significance and relationship of this lesion to interstitial fibrosis warrant further investigation.