PMID- 17473221 OWN - NLM STAT- MEDLINE DCOM- 20070921 LR - 20161122 IS - 1939-327X (Electronic) IS - 0012-1797 (Linking) VI - 56 IP - 9 DP - 2007 Sep TI - The vascular ectonucleotidase ENTPD1 is a novel renoprotective factor in diabetic nephropathy. PG - 2371-9 AB - Ectonucleoside triphosphate diphosphohydrolase 1 (ENTPD1) (also known as CD39) is the dominant vascular ectonucleotidase. By hydrolyzing ATP and ADP to AMP, ENTPD1 regulates ligand availability to a large family of P2 (purinergic) receptors. Modulation of extracellular nucleotide metabolism is an important factor in several acute and subacute models of vascular injury. We hypothesized that aberrant nucleotide signaling would promote chronic glomerular injury in diabetic nephropathy. Inducing diabetes in ENTPD1-null mice with streptozotocin resulted in increased proteinuria and more severe glomerular sclerosis compared with matched diabetic wild-type mice. Diabetic ENTPD1-null mice also had more glomerular fibrin deposition and glomerular plasminogen activator inhibitor-1 (PAI-1) staining than wild-type controls. In addition, ENTPD1-null mice showed increased glomerular inflammation, in association with higher levels of monocyte chemoattractant protein-1 (MCP-1) expression. Mesangial cell PAI-1 and MCP-1 mRNA expression were upregulated by ATP and UTP but not ADP or adenosine in vitro. The stable nucleotide analog ATPgammaS stimulated sustained expression of PAI-1 and MCP-1 in vitro, whereas the stable adenosine analog NECA [5'-(N-ethylcarboxamido)adenosine] downregulated expression of both genes. Extracellular nucleotide-stimulated upregulation of MCP-1 is, at least in part, protein kinase C dependent. We conclude that ENTPD1 is a vascular protective factor in diabetic nephropathy that modulates glomerular inflammation and thromboregulation. FAU - Friedman, David J AU - Friedman DJ AD - Renal Division, Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts 02215, USA. dfriedma@caregroup.harvard.edu FAU - Rennke, Helmut G AU - Rennke HG FAU - Csizmadia, Eva AU - Csizmadia E FAU - Enjyoji, Keiichi AU - Enjyoji K FAU - Robson, Simon C AU - Robson SC LA - eng GR - R01 HL063972-03/HL/NHLBI NIH HHS/United States GR - HL57307/HL/NHLBI NIH HHS/United States GR - R01 HL063972-06/HL/NHLBI NIH HHS/United States GR - HL076540/HL/NHLBI NIH HHS/United States GR - R01 HL063972-07/HL/NHLBI NIH HHS/United States GR - R01 HL063972-05/HL/NHLBI NIH HHS/United States GR - R01 HL063972-08/HL/NHLBI NIH HHS/United States GR - R01 HL063972/HL/NHLBI NIH HHS/United States GR - HL63972/HL/NHLBI NIH HHS/United States GR - R01 HL063972-04/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20070501 PL - United States TA - Diabetes JT - Diabetes JID - 0372763 RN - 0 (Antigens, CD) RN - 0 (Serum Albumin) RN - 5W494URQ81 (Streptozocin) RN - AYI8EX34EU (Creatinine) RN - EC 3.6.1.5 (Apyrase) RN - EC 3.6.1.5 (CD39 antigen) SB - IM MH - Animals MH - Antigens, CD/*genetics/metabolism MH - Apyrase/deficiency/*genetics MH - Creatinine/blood MH - Diabetes Mellitus, Experimental/*complications/pathology MH - Diabetic Angiopathies/*prevention & control MH - Diabetic Nephropathies/pathology/*prevention & control MH - Glomerular Mesangium/pathology MH - Humans MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Polymerase Chain Reaction MH - Serum Albumin/metabolism MH - Streptozocin EDAT- 2007/05/03 09:00 MHDA- 2007/09/22 09:00 CRDT- 2007/05/03 09:00 PHST- 2007/05/03 09:00 [pubmed] PHST- 2007/09/22 09:00 [medline] PHST- 2007/05/03 09:00 [entrez] AID - db06-1593 [pii] AID - 10.2337/db06-1593 [doi] PST - ppublish SO - Diabetes. 2007 Sep;56(9):2371-9. doi: 10.2337/db06-1593. Epub 2007 May 1.