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  • Title: The role of podocytes in proteinuria.
    Author: Asanuma K, Yanagida-Asanuma E, Takagi M, Kodama F, Tomino Y.
    Journal: Nephrology (Carlton); 2007 Dec; 12 Suppl 3():S15-20. PubMed ID: 17995522.
    Abstract:
    Glomerular visceral epithelial cells, also known as podocytes, are highly specialized epithelial cells that cover the outer layer of the glomerular basement membrane. Podocytes consist of cell bodies, major processes and foot processes (FP) of neighbouring cells, with the filtration slits bridged by the slit membrane between them. The function of podocytes is largely based on their specialized cell architecture and functions such as stabilization of glomerular capillaries and participation in the barrier function of the glomerular filter. Therefore, they form the final barrier to protein loss, which explains why podocyte injury is typically associated with marked proteinuria. Under pathological conditions, podocytes exhibit various changes. Among these changes, FP effacement represents the most characteristic change in cell shape of podocytes. FP effacement is dependent on disruption of the actin cytoskeletal network in the podocytes, The mechanisms of organization and re-organization of actin in the FP of podocytes are discussed in this review.
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