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2010-06-14 - Article/Dans un journal avec peer-review - Anglais - 10 page(s)

Vansthertem David, Gossiaux Annabel, Decleves Anne-Emilie , Caron N, Nonclerq Denis, Legrand Alexandre , Toubeau Gerard, "Expression of nestin, vimentin, and NCAM by renal interstitial cells after ischemic tubular injury" in Journal of Biomedicine and Biotechnology

  • Edition : Hindawi Publishing Corporation (Egypt)
  • Codes CREF : Histologie (DI3212), Sciences biomédicales (DI3200), Néphrologie - urologie (DI3325), Physiologie pathologique (DI3250)
  • Unités de recherche UMONS : Biochimie métabolique et moléculaire (M122)
  • Instituts UMONS : Institut des Sciences et Technologies de la Santé (Santé)
  • Centres UMONS : Centre de Recherche UMONS-Ambroise Paré (UMHAP)

Abstract(s) :

(Anglais) This work explores the distribution of various markers expressed by interstitial cells in rat kidneys after ischemic injury (35 minutes) during regeneration of S3 tubules of outer stripe of outer medulla (OSOM). Groups of experimental animals (n = 4) were sacrificed every two hours during the first 24 hours post-ischemia as well as 2, 3, 7, 14 days post-ischemia. The occurrence of lineage markers was analyzed on kidney sections by immunohistochemistry and morphometry during the process of tubular regeneration. In postischemic kidneys, interstitial cell proliferation, assessed by 5-bromo-2'-deoxyuridine (BrdU) and Proliferating Cell Nuclear Antigen (PCNA) labeling, was prominent in outer medulla and reach a maximum between 24 and 72 hours after reperfusion. This population was characterized by the coexpression of vimentin and nestin. The density of -Neural Cell Adhesion Molecule (NCAM) positive interstitial cells increased transiently (18-72 hours) in the vicinity of altered tubules. We have also localized a small population of alpha-Smooth Muscle Actin (SMA)-positive cells confined to chronically altered areas and characterized by a small proliferative index. In conclusion, we observed in the postischemic kidney a marked proliferation of interstitial cells that underwent transient phenotypical modifications. These interstitial cells could be implicated in processes leading to renal fibrosis.

Identifiants :
  • DOI : 10.1155/2010/193259