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Carbonic anhydrase in the monkey kidney.

G Lönnerholm

    Histochemistry
    |January 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

    Carbonic anhydrase is widely distributed in the monkey kidney, particularly in proximal tubules and intercalated cells. Primate kidneys show capillary enzyme activity, unlike rat kidneys, suggesting functional differences.

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    Area of Science:

    • Nephrology
    • Histochemistry
    • Enzymology

    Background:

    • Carbonic anhydrase (CA) is crucial for kidney function, involved in acid-base balance and ion transport.
    • Understanding CA distribution aids in comprehending renal physiology and disease.

    Purpose of the Study:

    • To map the precise distribution of carbonic anhydrase in the cynomolgus monkey kidney.
    • To compare carbonic anhydrase localization in primate kidneys with other species like rats and humans.

    Main Methods:

    • Histochemical staining using Hansson's method.
    • Microscopic examination of kidney tissue sections.

    Main Results:

    • High CA activity observed in proximal convoluted tubules (brush border, basolateral membranes, cytoplasm).

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  • Ascending thin limb of Henle's loop and glomeruli showed no activity.
  • Intercalated cells in distal tubules and collecting ducts exhibited significant cytoplasmic CA activity.
  • Cortical capillaries displayed notable CA activity, unlike in rat kidneys.

    • Conclusions:

    • Monkey kidney CA distribution is similar to humans but differs from rats due to capillary enzyme activity.
    • The functional significance of capillary CA in primate kidneys requires further investigation.