Proteinuria-Lowering Effect of Heparin Therapy in Diabetic Nephropathy without Affecting the Renin-Angiotensin-Aldosterone System
Angiotensin-converting enzyme inhibitors and angiotensin II (AngII) type 1 receptor blockers lower proteinuria and preserve renal function in diabetic nephropathy (DN). The antiproteinuric effects are greater than their blood pressure reduction, involving the sieving properties of the glomerular fil...
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| Veröffentlicht in: | Clinical journal of the American Society of Nephrology 2007-01, Vol.2 (1), p.58-67 |
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| creator | Benck, Urs Haeckel, Sarah Clorius, John H van der Woude, Fokko J |
| description | Angiotensin-converting enzyme inhibitors and angiotensin II (AngII) type 1 receptor blockers lower proteinuria and preserve renal function in diabetic nephropathy (DN). The antiproteinuric effects are greater than their blood pressure reduction, involving the sieving properties of the glomerular filter. In DN, glomerular staining for heparan sulfate proteoglycans is decreased. AngII inhibits heparan sulfate synthesis. Also, heparins modulate AngII signaling in glomerular cells, inhibiting aldosterone synthesis and lowering proteinuria in DN. Is the antiproteinuric effect of heparins due to its interference with the renin-angiotensin-aldosterone system? Ten volunteers each with DN and glomerulonephritis and control subjects were examined before and after low-dosage enoxaparin. Renal hemodynamics were determined with (99m)Tc-DTPA and (131)I-hippurate clearance. Glomerular filtration rate (GFR), effective renal plasma flow, mean arterial pressure, and heart rate were measured at baseline and during AngII infusion before and after enoxaparin while on normal salt and salt restriction. Enoxaparin did not lower aldosterone levels. GFR remained stable in all groups. AngII caused a significant decrease in effective renal plasma flow, whereas mean arterial pressure and heart rate increased significantly. Enoxaparin did not influence the AngII-induced changes of renal hemodynamics during normal salt intake or salt restriction. All groups showed identical responses to AngII before and after enoxaparin. In patients with diabetes, enoxaparin caused a significant decrease in proteinuria. It is concluded that the antiproteinuric effect of heparins in DN cannot be explained via interaction with the renin-angiotensin-aldosterone system. The absence of hemodynamic changes combined with reduced proteinuria point to intrinsic alterations in the glomerular filter. The effects were seen only in DN, not in glomerulonephritis. |
| doi_str_mv | 10.2215/CJN.02400706 |
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The antiproteinuric effects are greater than their blood pressure reduction, involving the sieving properties of the glomerular filter. In DN, glomerular staining for heparan sulfate proteoglycans is decreased. AngII inhibits heparan sulfate synthesis. Also, heparins modulate AngII signaling in glomerular cells, inhibiting aldosterone synthesis and lowering proteinuria in DN. Is the antiproteinuric effect of heparins due to its interference with the renin-angiotensin-aldosterone system? Ten volunteers each with DN and glomerulonephritis and control subjects were examined before and after low-dosage enoxaparin. Renal hemodynamics were determined with (99m)Tc-DTPA and (131)I-hippurate clearance. Glomerular filtration rate (GFR), effective renal plasma flow, mean arterial pressure, and heart rate were measured at baseline and during AngII infusion before and after enoxaparin while on normal salt and salt restriction. Enoxaparin did not lower aldosterone levels. GFR remained stable in all groups. AngII caused a significant decrease in effective renal plasma flow, whereas mean arterial pressure and heart rate increased significantly. Enoxaparin did not influence the AngII-induced changes of renal hemodynamics during normal salt intake or salt restriction. All groups showed identical responses to AngII before and after enoxaparin. In patients with diabetes, enoxaparin caused a significant decrease in proteinuria. It is concluded that the antiproteinuric effect of heparins in DN cannot be explained via interaction with the renin-angiotensin-aldosterone system. The absence of hemodynamic changes combined with reduced proteinuria point to intrinsic alterations in the glomerular filter. The effects were seen only in DN, not in glomerulonephritis.</description><identifier>ISSN: 1555-9041</identifier><identifier>EISSN: 1555-905X</identifier><identifier>DOI: 10.2215/CJN.02400706</identifier><identifier>PMID: 17699388</identifier><language>eng</language><publisher>United States: American Society of Nephrology</publisher><subject>Adult ; Aged ; Aldosterone - blood ; Blood Pressure - drug effects ; Diabetic Nephropathies - complications ; Diabetic Nephropathies - diagnostic imaging ; Diabetic Nephropathies - drug therapy ; Enoxaparin - administration & dosage ; Female ; Fibrinolytic Agents - administration & dosage ; Glomerular Filtration Rate - drug effects ; Hippurates - pharmacokinetics ; Humans ; Iodine Radioisotopes ; Male ; Middle Aged ; Models, Biological ; Prospective Studies ; Proteinuria - diagnostic imaging ; Proteinuria - drug therapy ; Proteinuria - etiology ; Radionuclide Imaging ; Renal Circulation - drug effects ; Renin-Angiotensin System - physiology ; Technetium Tc 99m Pentetate ; Treatment Outcome</subject><ispartof>Clinical journal of the American Society of Nephrology, 2007-01, Vol.2 (1), p.58-67</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c423t-621d2d83ae8aeaf46de1c500dfed50db464180edf8b0b681141623840d6c23183</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,781,785,27926,27927</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/17699388$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Benck, Urs</creatorcontrib><creatorcontrib>Haeckel, Sarah</creatorcontrib><creatorcontrib>Clorius, John H</creatorcontrib><creatorcontrib>van der Woude, Fokko J</creatorcontrib><title>Proteinuria-Lowering Effect of Heparin Therapy in Diabetic Nephropathy without Affecting the Renin-Angiotensin-Aldosterone System</title><title>Clinical journal of the American Society of Nephrology</title><addtitle>Clin J Am Soc Nephrol</addtitle><description>Angiotensin-converting enzyme inhibitors and angiotensin II (AngII) type 1 receptor blockers lower proteinuria and preserve renal function in diabetic nephropathy (DN). The antiproteinuric effects are greater than their blood pressure reduction, involving the sieving properties of the glomerular filter. In DN, glomerular staining for heparan sulfate proteoglycans is decreased. AngII inhibits heparan sulfate synthesis. Also, heparins modulate AngII signaling in glomerular cells, inhibiting aldosterone synthesis and lowering proteinuria in DN. Is the antiproteinuric effect of heparins due to its interference with the renin-angiotensin-aldosterone system? Ten volunteers each with DN and glomerulonephritis and control subjects were examined before and after low-dosage enoxaparin. Renal hemodynamics were determined with (99m)Tc-DTPA and (131)I-hippurate clearance. Glomerular filtration rate (GFR), effective renal plasma flow, mean arterial pressure, and heart rate were measured at baseline and during AngII infusion before and after enoxaparin while on normal salt and salt restriction. Enoxaparin did not lower aldosterone levels. GFR remained stable in all groups. AngII caused a significant decrease in effective renal plasma flow, whereas mean arterial pressure and heart rate increased significantly. Enoxaparin did not influence the AngII-induced changes of renal hemodynamics during normal salt intake or salt restriction. All groups showed identical responses to AngII before and after enoxaparin. In patients with diabetes, enoxaparin caused a significant decrease in proteinuria. It is concluded that the antiproteinuric effect of heparins in DN cannot be explained via interaction with the renin-angiotensin-aldosterone system. The absence of hemodynamic changes combined with reduced proteinuria point to intrinsic alterations in the glomerular filter. The effects were seen only in DN, not in glomerulonephritis.</description><subject>Adult</subject><subject>Aged</subject><subject>Aldosterone - blood</subject><subject>Blood Pressure - drug effects</subject><subject>Diabetic Nephropathies - complications</subject><subject>Diabetic Nephropathies - diagnostic imaging</subject><subject>Diabetic Nephropathies - drug therapy</subject><subject>Enoxaparin - administration & dosage</subject><subject>Female</subject><subject>Fibrinolytic Agents - administration & dosage</subject><subject>Glomerular Filtration Rate - drug effects</subject><subject>Hippurates - pharmacokinetics</subject><subject>Humans</subject><subject>Iodine Radioisotopes</subject><subject>Male</subject><subject>Middle Aged</subject><subject>Models, Biological</subject><subject>Prospective Studies</subject><subject>Proteinuria - diagnostic imaging</subject><subject>Proteinuria - drug therapy</subject><subject>Proteinuria - etiology</subject><subject>Radionuclide Imaging</subject><subject>Renal Circulation - drug effects</subject><subject>Renin-Angiotensin System - physiology</subject><subject>Technetium Tc 99m Pentetate</subject><subject>Treatment Outcome</subject><issn>1555-9041</issn><issn>1555-905X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpFkE1v1DAQhiMEoqVw44x8gRNp_V3vcbUUSrUqCIrEzXLiycZVYqe2o9Ue-ed42S09zavRM-9IT1W9JficUiIuVje355hyjC-xfFadEiFEvcDi9_P_mZOT6lVK9xhzzqh4WZ2QS7lYMKVOqz_fY8jg_BydqddhC9H5DbrqOmgzCh26hsmUFbrrIZpph0r85EwD2bXoFqY-hsnkfoe2Lvdhzmj573LfkXtAP8A7Xy_9xpUnPu3zYEPKEIMH9HNX0vi6etGZIcGb4zyrfn2-ultd1-tvX76uluu65ZTlWlJiqVXMgDJgOi4tkFZgbDuwAtuGS04UBtupBjdSEcKJpExxbGVLGVHsrPpw6J1ieJghZT261MIwGA9hTrrcSMnoooAfD2AbQ0oROj1FN5q40wTrvXJdlOtH5QV_d-ydmxHsE3x0XID3B6B3m37rIug0mmEoONXtvUmeaqKFYn8BZVuLjw</recordid><startdate>20070101</startdate><enddate>20070101</enddate><creator>Benck, Urs</creator><creator>Haeckel, Sarah</creator><creator>Clorius, John H</creator><creator>van der Woude, Fokko J</creator><general>American Society of Nephrology</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20070101</creationdate><title>Proteinuria-Lowering Effect of Heparin Therapy in Diabetic Nephropathy without Affecting the Renin-Angiotensin-Aldosterone System</title><author>Benck, Urs ; Haeckel, Sarah ; Clorius, John H ; van der Woude, Fokko J</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c423t-621d2d83ae8aeaf46de1c500dfed50db464180edf8b0b681141623840d6c23183</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Adult</topic><topic>Aged</topic><topic>Aldosterone - blood</topic><topic>Blood Pressure - drug effects</topic><topic>Diabetic Nephropathies - complications</topic><topic>Diabetic Nephropathies - diagnostic imaging</topic><topic>Diabetic Nephropathies - drug therapy</topic><topic>Enoxaparin - administration & dosage</topic><topic>Female</topic><topic>Fibrinolytic Agents - administration & dosage</topic><topic>Glomerular Filtration Rate - drug effects</topic><topic>Hippurates - pharmacokinetics</topic><topic>Humans</topic><topic>Iodine Radioisotopes</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Models, Biological</topic><topic>Prospective Studies</topic><topic>Proteinuria - diagnostic imaging</topic><topic>Proteinuria - drug therapy</topic><topic>Proteinuria - etiology</topic><topic>Radionuclide Imaging</topic><topic>Renal Circulation - drug effects</topic><topic>Renin-Angiotensin System - physiology</topic><topic>Technetium Tc 99m Pentetate</topic><topic>Treatment Outcome</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Benck, Urs</creatorcontrib><creatorcontrib>Haeckel, Sarah</creatorcontrib><creatorcontrib>Clorius, John H</creatorcontrib><creatorcontrib>van der Woude, Fokko J</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Clinical journal of the American Society of Nephrology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Benck, Urs</au><au>Haeckel, Sarah</au><au>Clorius, John H</au><au>van der Woude, Fokko J</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Proteinuria-Lowering Effect of Heparin Therapy in Diabetic Nephropathy without Affecting the Renin-Angiotensin-Aldosterone System</atitle><jtitle>Clinical journal of the American Society of Nephrology</jtitle><addtitle>Clin J Am Soc Nephrol</addtitle><date>2007-01-01</date><risdate>2007</risdate><volume>2</volume><issue>1</issue><spage>58</spage><epage>67</epage><pages>58-67</pages><issn>1555-9041</issn><eissn>1555-905X</eissn><abstract>Angiotensin-converting enzyme inhibitors and angiotensin II (AngII) type 1 receptor blockers lower proteinuria and preserve renal function in diabetic nephropathy (DN). The antiproteinuric effects are greater than their blood pressure reduction, involving the sieving properties of the glomerular filter. In DN, glomerular staining for heparan sulfate proteoglycans is decreased. AngII inhibits heparan sulfate synthesis. Also, heparins modulate AngII signaling in glomerular cells, inhibiting aldosterone synthesis and lowering proteinuria in DN. Is the antiproteinuric effect of heparins due to its interference with the renin-angiotensin-aldosterone system? Ten volunteers each with DN and glomerulonephritis and control subjects were examined before and after low-dosage enoxaparin. Renal hemodynamics were determined with (99m)Tc-DTPA and (131)I-hippurate clearance. Glomerular filtration rate (GFR), effective renal plasma flow, mean arterial pressure, and heart rate were measured at baseline and during AngII infusion before and after enoxaparin while on normal salt and salt restriction. Enoxaparin did not lower aldosterone levels. GFR remained stable in all groups. AngII caused a significant decrease in effective renal plasma flow, whereas mean arterial pressure and heart rate increased significantly. Enoxaparin did not influence the AngII-induced changes of renal hemodynamics during normal salt intake or salt restriction. All groups showed identical responses to AngII before and after enoxaparin. In patients with diabetes, enoxaparin caused a significant decrease in proteinuria. It is concluded that the antiproteinuric effect of heparins in DN cannot be explained via interaction with the renin-angiotensin-aldosterone system. The absence of hemodynamic changes combined with reduced proteinuria point to intrinsic alterations in the glomerular filter. The effects were seen only in DN, not in glomerulonephritis.</abstract><cop>United States</cop><pub>American Society of Nephrology</pub><pmid>17699388</pmid><doi>10.2215/CJN.02400706</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Adult Aged Aldosterone - blood Blood Pressure - drug effects Diabetic Nephropathies - complications Diabetic Nephropathies - diagnostic imaging Diabetic Nephropathies - drug therapy Enoxaparin - administration & dosage Female Fibrinolytic Agents - administration & dosage Glomerular Filtration Rate - drug effects Hippurates - pharmacokinetics Humans Iodine Radioisotopes Male Middle Aged Models, Biological Prospective Studies Proteinuria - diagnostic imaging Proteinuria - drug therapy Proteinuria - etiology Radionuclide Imaging Renal Circulation - drug effects Renin-Angiotensin System - physiology Technetium Tc 99m Pentetate Treatment Outcome |
| title | Proteinuria-Lowering Effect of Heparin Therapy in Diabetic Nephropathy without Affecting the Renin-Angiotensin-Aldosterone System |
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