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Related Experiment Videos

Ultrastructure of normal rabbit mesentery.

L Gotloib, G E Digenis, S Rabinovich

    Nephron
    |January 1, 1983
    PubMed
    Summary

    Ultrastructure of the peritoneal dialysis membrane was studied in rabbits using electron microscopy. Findings suggest vesicular transport in mesothelial cells is crucial for molecule transportation across the membrane.

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    Area of Science:

    • Cell biology
    • Anatomy
    • Physiology

    Background:

    • The mesentery functions as the peritoneal dialysis membrane.
    • Understanding its ultrastructure is key to optimizing dialysis.

    Purpose of the Study:

    • To examine the ultrastructure of the mesenteric peritoneal dialysis membrane in rabbits.
    • To investigate the role of vesicular transport in molecule movement.

    Main Methods:

    • In vivo fixation of the mesentery in rabbits.
    • Electron microscopy (EM) examination.
    • Use of an electron-dense tracer (iron dextran) and dialysate infusion.

    Main Results:

    • Mesothelial cells feature tight junctions and numerous vesicles.
    • Mesenteric microvessels include continuous capillaries and postcapillary venules.
    • Capillary lymphatics and lacunae appear more extensive than blood vessels.
    • Tracer detected in mesothelial cell vesicles, indicating vesicular transport.

    Conclusions:

    • Vesicular transport is likely significant for transporting molecules of certain sizes across the mesentery.
    • The mesentery's ultrastructure supports its role as an active peritoneal dialysis membrane.

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