Journal Article

Vascular endothelial growth factor expression and glomerular endothelial cell loss in the remnant kidney model

Darren J. Kelly, Claire Hepper, Leonard L. Wu, Alison J. Cox and Richard E. Gilbert

in Nephrology Dialysis Transplantation

Published on behalf of European Renal Association - European Dialysis and Transplant Assoc

Volume 18, issue 7, pages 1286-1292
Published in print July 2003 | ISSN: 0931-0509
Published online July 2003 | e-ISSN: 1460-2385 | DOI: http://dx.doi.org/10.1093/ndt/gfg176
Vascular endothelial growth factor expression and glomerular endothelial cell loss in the remnant kidney model

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Background. Vascular endothelial growth factor (VEGF) is constitutively expressed in the glomerulus where it may have a role in the maintenance of capillary endothelial cell integrity. The present study sought to examine changes in VEGF expression in a model of progressive renal disease and to assess the effects of angiotensin converting enzyme (ACE) inhibition.

Methods. Subtotal nephrectomized (STNx) rats were randomly assigned to receive vehicle (n=10) or the ACE inhibitor perindopril (8 mg/l drinking water) for 12 weeks duration (n=10). Sham‐operated rats were used as controls (n=10). Glomerular capillary endothelial cell density was evaluated by immunostaining for the pan‐endothelial cell marker RECA‐1 and VEGF expression was assessed by quantitative in situ hybridization.

Results. In STNx rats glomerular capillary endothelial cell density was reduced to 19% that of sham rats (P<0.01) with a concomitant reduction in glomerular VEGF expression, also to 19% of sham rats (P<0.01). Perindopril treatment was associated with normalization of both capillary endothelial cell density and glomerular VEGF mRNA.

Conclusions. Reduction in glomerular VEGF expression is a feature of the renal pathology that follows subtotal nephrectomy. In the context of the known functions of this growth factor, these findings suggest that diminution in VEGF may contribute to the demonstrated loss of glomerular endothelium that develops in this model of progressive renal disease.

Keywords: angiotensin converting enzyme; endothelium; glomerulosclerosis; renin–angiotensin system; vascular endothelial growth factor

Journal Article.  3730 words.  Illustrated.

Subjects: Nephrology

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