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  • Title: Partial ischemia and proteinuria during isolated kidney perfusion is accompanied by the release of vascular [35S]heparan sulfate.
    Author: Vassiliou P, Tay M, Comper WD.
    Journal: Biochem Int; 1989 Dec; 19(6):1241-51. PubMed ID: 2534569.
    Abstract:
    The isolated kidney perfused with modified Krebs-Henseleit buffer with amino acids yields heavy proteinuria associated with reduced ATP levels characteristic of partial ischemia. These conditions are associated with a similar perfusion time dependent release of degraded vascular [35S]heparan sulfate proteoglycan into the perfusate solution which included a 60% loss of [35S]macromolecular material from the glomerulus after 2h of perfusion. Small amounts of [35S]macromolecular material were found in the urine and lymph. These results demonstrate that partial ischemia promotes a specific response in the overall renal vasculature, probably involving oxygen reactive metabolites, that results in the preferential release of heparan sulphate from the basement membrane and endothelial cells on the luminal side of the capillary wall.
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