Prevention of Renal Damage by Angiotensin II Blockade, Accompanied by Increased Renal Hepatocyte Growth Factor in Experimental Hypertensive Rats

Hepatocyte growth factor (HGF) is a unique growth factor that has many protective functions against renal damage. Our previous study demonstrated that HGF stimulated the growth of endothelial and epithelial cells without the replication of mesangial cells. Moreover, angiotensin (Ang) II significantl...

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Veröffentlicht in:Hypertension (Dallas, Tex. 1979) Tex. 1979), 1999-08, Vol.34 (2), p.279-284
Hauptverfasser: Matsumoto, Keiko, Morishita, Ryuichi, Moriguchi, Atsushi, Tomita, Naruya, Yo, Yoshikage, Nishii, Tadahiko, Matsumoto, Kunio, Nakamura, Toshikazu, Higaki, Jitsuo, Ogihara, Toshio
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container_issue 2
container_start_page 279
container_title Hypertension (Dallas, Tex. 1979)
container_volume 34
creator Matsumoto, Keiko
Morishita, Ryuichi
Moriguchi, Atsushi
Tomita, Naruya
Yo, Yoshikage
Nishii, Tadahiko
Matsumoto, Kunio
Nakamura, Toshikazu
Higaki, Jitsuo
Ogihara, Toshio
description Hepatocyte growth factor (HGF) is a unique growth factor that has many protective functions against renal damage. Our previous study demonstrated that HGF stimulated the growth of endothelial and epithelial cells without the replication of mesangial cells. Moreover, angiotensin (Ang) II significantly decreased local HGF production in mesangial cells. Therefore, we examined the effects of Ang II blockade on renal HGF expression and renal damage in experimental hypertensive rats. An angiotensin-converting enzyme inhibitor (cilazapril; 10 mg [middle dot] kg [middle dot] d), an Ang II type 1 receptor antagonist (E-4177; 30 mg [middle dot] kg [middle dot] d), hydralazine (8 mg [middle dot] kg [middle dot] d), and vehicle were administered to 16-week-old stroke-prone spontaneously hypertensive rats (SHR-SP) for 3 weeks. Renal damage was evaluated with a computer analysis system, and renal HGF mRNA was measured by Northern blot analysis. Blood pressure of SHR-SP was significantly decreased by all drug treatments compared with vehicle. Moreover, cilazapril, E-4177, and hydralazine significantly decreased the thickening and necrosis of blood vessels compared with vehicle. Similarly, degeneration and necrosis of glomeruli were also markedly improved by cilazapril and E-4177 (P
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Our previous study demonstrated that HGF stimulated the growth of endothelial and epithelial cells without the replication of mesangial cells. Moreover, angiotensin (Ang) II significantly decreased local HGF production in mesangial cells. Therefore, we examined the effects of Ang II blockade on renal HGF expression and renal damage in experimental hypertensive rats. An angiotensin-converting enzyme inhibitor (cilazapril; 10 mg [middle dot] kg [middle dot] d), an Ang II type 1 receptor antagonist (E-4177; 30 mg [middle dot] kg [middle dot] d), hydralazine (8 mg [middle dot] kg [middle dot] d), and vehicle were administered to 16-week-old stroke-prone spontaneously hypertensive rats (SHR-SP) for 3 weeks. Renal damage was evaluated with a computer analysis system, and renal HGF mRNA was measured by Northern blot analysis. Blood pressure of SHR-SP was significantly decreased by all drug treatments compared with vehicle. Moreover, cilazapril, E-4177, and hydralazine significantly decreased the thickening and necrosis of blood vessels compared with vehicle. Similarly, degeneration and necrosis of glomeruli were also markedly improved by cilazapril and E-4177 (P&lt;0.01). We next examined the effects of Ang II blockade on renal HGF expression in SHR-SP. Renal HGF mRNA was markedly decreased in SHR-SP compared with Wistar-Kyoto rats, although Ang II blockade by cilazapril and E-4177 but not hydralazine significantly increased renal HGF mRNA in SHR-SP. Ang II blockade significantly increased renal HGF (a protective growth factor for tubular epithelial cells); thus, we examined tubular histological appearance. Degeneration and necrosis of tubules were significantly improved by cilazapril and E-4177 treatment (P&lt;0.01). In addition, cell infiltration into the glomeruli and hemorrhage were also significantly reduced in SHR-SP treated with cilazapril or E-4177. The present data demonstrated the prevention of renal damage by Ang II blockade in SHR-SP, which was accompanied by a significant increase in renal HGF mRNA. Given the strong mitogenic activity and antiapoptotic actions of HGF on endothelial and epithelial cells, we believe that increased local HGF production by the blockade of Ang II may improve renal function in hypertension. 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Our previous study demonstrated that HGF stimulated the growth of endothelial and epithelial cells without the replication of mesangial cells. Moreover, angiotensin (Ang) II significantly decreased local HGF production in mesangial cells. Therefore, we examined the effects of Ang II blockade on renal HGF expression and renal damage in experimental hypertensive rats. An angiotensin-converting enzyme inhibitor (cilazapril; 10 mg [middle dot] kg [middle dot] d), an Ang II type 1 receptor antagonist (E-4177; 30 mg [middle dot] kg [middle dot] d), hydralazine (8 mg [middle dot] kg [middle dot] d), and vehicle were administered to 16-week-old stroke-prone spontaneously hypertensive rats (SHR-SP) for 3 weeks. Renal damage was evaluated with a computer analysis system, and renal HGF mRNA was measured by Northern blot analysis. Blood pressure of SHR-SP was significantly decreased by all drug treatments compared with vehicle. Moreover, cilazapril, E-4177, and hydralazine significantly decreased the thickening and necrosis of blood vessels compared with vehicle. Similarly, degeneration and necrosis of glomeruli were also markedly improved by cilazapril and E-4177 (P&lt;0.01). We next examined the effects of Ang II blockade on renal HGF expression in SHR-SP. Renal HGF mRNA was markedly decreased in SHR-SP compared with Wistar-Kyoto rats, although Ang II blockade by cilazapril and E-4177 but not hydralazine significantly increased renal HGF mRNA in SHR-SP. Ang II blockade significantly increased renal HGF (a protective growth factor for tubular epithelial cells); thus, we examined tubular histological appearance. Degeneration and necrosis of tubules were significantly improved by cilazapril and E-4177 treatment (P&lt;0.01). In addition, cell infiltration into the glomeruli and hemorrhage were also significantly reduced in SHR-SP treated with cilazapril or E-4177. The present data demonstrated the prevention of renal damage by Ang II blockade in SHR-SP, which was accompanied by a significant increase in renal HGF mRNA. Given the strong mitogenic activity and antiapoptotic actions of HGF on endothelial and epithelial cells, we believe that increased local HGF production by the blockade of Ang II may improve renal function in hypertension. 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Drug treatments</subject><subject>Pyridines - pharmacology</subject><subject>Pyridines - therapeutic use</subject><subject>Rats</subject><subject>Rats, Inbred SHR</subject><subject>Rats, Inbred WKY</subject><subject>RNA, Messenger - analysis</subject><subject>Time Factors</subject><issn>0194-911X</issn><issn>1524-4563</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1999</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpdkV-L1DAUxYMo7rj67JsEEZ9sN__bPI7r7s7AgsuioE8hzdzudLfT1KTdsd_Cj2zGDiiGhHDgd8_lcBB6TUlOqaJnhObbqc-5yFnOCv0ELahkIhNS8adoQagWmab02wl6EeM9IVQIUTxHJ5QIKdJdoF83AR6hGxrfYV_jW-hsiz_Znb0DXE142d01foAuNh1er_HH1rsHu4EPeOmc3_W2a2Bz4NadC2BjErPDCno7eDcNgK-C3w9bfGnd4ANOPhc_ewjNLi09gFMSfxY8Ar61Q3yJntW2jfDq-J-ir5cXX85X2fXnq_X58jpzUjCWyZqJkjihlGTaaVFZJzfWAue8qoHUUMhSpeiS18rR0iquCPA0yl1d0VLyU_R-9u2D_zFCHMyuiQ7a1nbgx2iU1qUoiyKBb_8D7_0YUshoGJGsUJQf3M5myAUfY4Da9CmiDZOhxByaMoSa1fcbw4VhJjWVJt4cbcdqB5t_-LmaBLw7AjY629bBdq6JfzktU70qYWLG9r4dIMSHdtxDMFuw7bA1JB3BVJlRrTUpk8rSY4z_BrXTq7k</recordid><startdate>199908</startdate><enddate>199908</enddate><creator>Matsumoto, Keiko</creator><creator>Morishita, Ryuichi</creator><creator>Moriguchi, Atsushi</creator><creator>Tomita, Naruya</creator><creator>Yo, Yoshikage</creator><creator>Nishii, Tadahiko</creator><creator>Matsumoto, Kunio</creator><creator>Nakamura, Toshikazu</creator><creator>Higaki, Jitsuo</creator><creator>Ogihara, Toshio</creator><general>American Heart Association, Inc</general><general>Lippincott</general><scope>IQODW</scope><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>K9.</scope><scope>7X8</scope></search><sort><creationdate>199908</creationdate><title>Prevention of Renal Damage by Angiotensin II Blockade, Accompanied by Increased Renal Hepatocyte Growth Factor in Experimental Hypertensive Rats</title><author>Matsumoto, Keiko ; Morishita, Ryuichi ; Moriguchi, Atsushi ; Tomita, Naruya ; Yo, Yoshikage ; Nishii, Tadahiko ; Matsumoto, Kunio ; Nakamura, Toshikazu ; Higaki, Jitsuo ; Ogihara, Toshio</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c5422-5f2480c466529c94bac5daae333bfe0fe758691153f6c18a6360e35423cfb1853</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1999</creationdate><topic>Angiotensin II - antagonists &amp; inhibitors</topic><topic>Angiotensin Receptor Antagonists</topic><topic>Angiotensin-Converting Enzyme Inhibitors - pharmacology</topic><topic>Angiotensin-Converting Enzyme Inhibitors - therapeutic use</topic><topic>Animals</topic><topic>Antihypertensive agents</topic><topic>Antihypertensive Agents - pharmacology</topic><topic>Antihypertensive Agents - therapeutic use</topic><topic>Biological and medical sciences</topic><topic>Blood Pressure - drug effects</topic><topic>Blotting, Northern</topic><topic>Cardiovascular system</topic><topic>Cilazapril - pharmacology</topic><topic>Cilazapril - therapeutic use</topic><topic>Data Interpretation, Statistical</topic><topic>Hepatocyte Growth Factor - biosynthesis</topic><topic>Hepatocyte Growth Factor - genetics</topic><topic>Hydralazine - pharmacology</topic><topic>Hydralazine - therapeutic use</topic><topic>Hypertension, Renal - pathology</topic><topic>Hypertension, Renal - prevention &amp; control</topic><topic>Imidazoles - pharmacology</topic><topic>Imidazoles - therapeutic use</topic><topic>Kidney - drug effects</topic><topic>Kidney - metabolism</topic><topic>Kidney - pathology</topic><topic>Kidney Tubules - drug effects</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Pharmacology. 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Our previous study demonstrated that HGF stimulated the growth of endothelial and epithelial cells without the replication of mesangial cells. Moreover, angiotensin (Ang) II significantly decreased local HGF production in mesangial cells. Therefore, we examined the effects of Ang II blockade on renal HGF expression and renal damage in experimental hypertensive rats. An angiotensin-converting enzyme inhibitor (cilazapril; 10 mg [middle dot] kg [middle dot] d), an Ang II type 1 receptor antagonist (E-4177; 30 mg [middle dot] kg [middle dot] d), hydralazine (8 mg [middle dot] kg [middle dot] d), and vehicle were administered to 16-week-old stroke-prone spontaneously hypertensive rats (SHR-SP) for 3 weeks. Renal damage was evaluated with a computer analysis system, and renal HGF mRNA was measured by Northern blot analysis. Blood pressure of SHR-SP was significantly decreased by all drug treatments compared with vehicle. Moreover, cilazapril, E-4177, and hydralazine significantly decreased the thickening and necrosis of blood vessels compared with vehicle. Similarly, degeneration and necrosis of glomeruli were also markedly improved by cilazapril and E-4177 (P&lt;0.01). We next examined the effects of Ang II blockade on renal HGF expression in SHR-SP. Renal HGF mRNA was markedly decreased in SHR-SP compared with Wistar-Kyoto rats, although Ang II blockade by cilazapril and E-4177 but not hydralazine significantly increased renal HGF mRNA in SHR-SP. Ang II blockade significantly increased renal HGF (a protective growth factor for tubular epithelial cells); thus, we examined tubular histological appearance. Degeneration and necrosis of tubules were significantly improved by cilazapril and E-4177 treatment (P&lt;0.01). In addition, cell infiltration into the glomeruli and hemorrhage were also significantly reduced in SHR-SP treated with cilazapril or E-4177. The present data demonstrated the prevention of renal damage by Ang II blockade in SHR-SP, which was accompanied by a significant increase in renal HGF mRNA. Given the strong mitogenic activity and antiapoptotic actions of HGF on endothelial and epithelial cells, we believe that increased local HGF production by the blockade of Ang II may improve renal function in hypertension. (Hypertension. 1999;34:279-284.)</abstract><cop>Philadelphia, PA</cop><cop>Hagerstown, MD</cop><pub>American Heart Association, Inc</pub><pmid>10454454</pmid><doi>10.1161/01.hyp.34.2.279</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record>
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subjects Angiotensin II - antagonists & inhibitors
Angiotensin Receptor Antagonists
Angiotensin-Converting Enzyme Inhibitors - pharmacology
Angiotensin-Converting Enzyme Inhibitors - therapeutic use
Animals
Antihypertensive agents
Antihypertensive Agents - pharmacology
Antihypertensive Agents - therapeutic use
Biological and medical sciences
Blood Pressure - drug effects
Blotting, Northern
Cardiovascular system
Cilazapril - pharmacology
Cilazapril - therapeutic use
Data Interpretation, Statistical
Hepatocyte Growth Factor - biosynthesis
Hepatocyte Growth Factor - genetics
Hydralazine - pharmacology
Hydralazine - therapeutic use
Hypertension, Renal - pathology
Hypertension, Renal - prevention & control
Imidazoles - pharmacology
Imidazoles - therapeutic use
Kidney - drug effects
Kidney - metabolism
Kidney - pathology
Kidney Tubules - drug effects
Male
Medical sciences
Pharmacology. Drug treatments
Pyridines - pharmacology
Pyridines - therapeutic use
Rats
Rats, Inbred SHR
Rats, Inbred WKY
RNA, Messenger - analysis
Time Factors
title Prevention of Renal Damage by Angiotensin II Blockade, Accompanied by Increased Renal Hepatocyte Growth Factor in Experimental Hypertensive Rats
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