The podocyte's response to stress

• Verfasst von: Kriz, Wilhelm [VerfasserIn]
• Titel: The podocyte's response to stress
• Titelzusatz: the enigma of foot process effacement
• Verf.angabe: Wilhelm Kriz, Isao Shirato, Michio Nagata, Michel LeHir, and Kevin V. Lemley
• Jahr: 2013
• Umfang: 15 S.
• Fussnoten: First published: December 12, 2012 ; Gesehen am 28.06.2018
• Titel Quelle: Enthalten in: American journal of physiology. Renal physiology
• Ort Quelle: Bethesda, Md. : Soc., 1977
• Jahr Quelle: 2013
• Band/Heft Quelle: 304(2013), 4, Seite F333-F347
• ISSN Quelle: 1522-1466
• DOI: doi:10.1152/ajprenal.00478.2012
• Datenträger: Online-Ressource
• Sprache: eng
• Bibliogr. Hinweis: Erscheint auch als : Druck-Ausgabe: The podocyte's response to stress. - 2013
• K10plus-PPN: 1576945502

Abstract

Progressive loss of podocytes is the most frequent cause accounting for end-stage renal failure. Podocytes are complex, terminally differentiated cells incapable of replicating. Thus lost podocytes cannot be replaced by proliferation of neighboring undamaged cells. Moreover, podocytes occupy a unique position as epithelial cells, adhering to the glomerular basement membrane (GBM) only by their processes, whereas their cell bodies float within the filtrate in Bowman's space. This exposes podocytes to the danger of being lost by detachment as viable cells from the GBM. Indeed, podocytes are continually excreted as viable cells in the urine, and the rate of excretion dramatically increases in glomerular diseases. Given this situation, it is likely that evolution has developed particular mechanisms whereby podocytes resist cell detachment. Podocytes respond to stress and injury by undergoing tremendous changes in shape. Foot process effacement is the most prominent and, yet in some ways, the most enigmatic of those changes. This review summarizes the various structural responses of podocytes to injury, focusing on foot process effacement and detachment. We raise the hypothesis that foot process effacement represents a protective response of podocytes to escape detachment from the GBM.