Reduction of anionic sites in the glomerular basement membrane by heparanase does not lead to proteinuria.

Elevated Urine Heparanase Levels Are Associated with Proteinuria and Decreased Renal Allograft Function

Heparanase is an endo-β-glucuronidase that cleaves heparan sulfate side chains, leading to structural modifications that loosen the extracellular matrix barrier and associated with tumor metastasis, inflammation and angiogenesis. In addition, the highly sulfated heparan sulfate proteoglycans are important constituents of the glomerular basement membrane and its permselective properties. Recent ...

Heparanase in glomerular diseases.

Heparanase is an endo-beta(1-4)-D-glucuronidase that degrades heparan sulfate (HS) polysaccharide side chains. The role of heparanase in metastasis, angiogenesis, and inflammation has been established. Recent data suggest a role for heparanase in several proteinuric diseases and an increased glomerular heparanase expression is associated with loss of HS in the glomerular basement membrane (GBM)...

Recombinant interleukin-2 alone did not induce proteinuria with changes in anionic sites of the glomerular basement membrane in rats.

Induction of glomerular heparanase expression in rats with adriamycin nephropathy is regulated by reactive oxygen species and the renin-angiotensin system.

Heparan sulfate (HS) in the glomerular basement membrane (GBM) is important for regulation of the charge-dependent permeability. Heparanase has been implicated in HS degradation in several proteinuric diseases. This study analyzed the role of heparanase in HS degradation in Adriamycin nephropathy (AN), a model of chronic proteinuria-induced renal damage. Expression of heparanase, HS, and the co...

Regulation of Glomerular Endothelial Cell Proteoglycans by Glucose

The presence of heparan sulfate proteoglycan (HSPG) in anionic sites in the lamina rara interna of glomerular basement membrane suggests that the proteoglycan may be deposited by the glomerular endothelial cells (GEndo). We have previously demonstrated that bovine GEndo in vitro synthesize perlecan, a species of glomerular basement membrane HSPG. In this study we examined whether high glucose m...