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Cytological changes in chloride cells following altered ionic media

W L Doyle

    The Journal of Experimental Zoology
    |March 1, 1977
    PubMed
    Summary

    Exposure to unnatural ions and transport inhibitors altered gill chloride cells in rock-eel and guppy. The tubular reticulum

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    Area of Science:

    • * Comparative physiology and cell biology.
    • * Environmental toxicology and ion transport mechanisms.

    Background:

    • * Fish gills possess specialized chloride cells crucial for osmoregulation in diverse aquatic environments.
    • * Understanding the cellular response to environmental stressors is vital for aquatic ecosystem health.

    Purpose of the Study:

    • * To investigate the effects of specific ions and transport inhibitors on fish gill chloride cells.
    • * To elucidate the role of the tubular reticulum in ion segregation within chloride cells.

    Main Methods:

    • * Exposure of rock-eel (Pholis) and guppy (Lebistes) to low concentrations of thiocyanate, potassium, and ouabain.
    • * Cytological examination of gill tissues to identify alterations in chloride cells and intracellular membranes.
    • * Microscopic analysis to observe the structure of the tubular reticulum under experimental conditions.

    Main Results:

    • * Unnatural ions and transport inhibitors induced cytological changes in gill chloride cells.
    • * Some tested substances caused generalized damage to intracellular membranes.
    • * Highly ordered geometric arrays of the tubular reticulum were observed under specific experimental conditions.

    Conclusions:

    • * The tubular reticulum appears to play a significant role in the ionic segregation process within chloride cells.
    • * The normal structure of the tubular reticulum is contingent upon the intracellular ionic environment.
    • * These findings provide insights into cellular mechanisms of ion transport and adaptation in fish.

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