Angiotensin 1–7 Reduces Mortality and Rupture of Intracranial Aneurysms in Mice

Angiotensin II (Ang II) stimulates vascular inflammation, oxidative stress, and formation and rupture of intracranial aneurysms in mice. Because Ang 1–7 acts on Mas receptors and generally counteracts deleterious effects of Ang II, we tested the hypothesis that Ang 1–7 attenuates formation and ruptu...

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Veröffentlicht in:Hypertension (Dallas, Tex. 1979) Tex. 1979), 2014-08, Vol.64 (2), p.362-368
Hauptverfasser: Peña Silva, Ricardo A, Kung, David K, Mitchell, Ian J, Alenina, Natalia, Bader, Michael, Santos, Robson A.S, Faraci, Frank M, Heistad, Donald D, Hasan, David M
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container_title Hypertension (Dallas, Tex. 1979)
container_volume 64
creator Peña Silva, Ricardo A
Kung, David K
Mitchell, Ian J
Alenina, Natalia
Bader, Michael
Santos, Robson A.S
Faraci, Frank M
Heistad, Donald D
Hasan, David M
description Angiotensin II (Ang II) stimulates vascular inflammation, oxidative stress, and formation and rupture of intracranial aneurysms in mice. Because Ang 1–7 acts on Mas receptors and generally counteracts deleterious effects of Ang II, we tested the hypothesis that Ang 1–7 attenuates formation and rupture of intracranial aneurysms. Intracranial aneurysms were induced in wild-type and Mas receptor–deficient mice using a combination of Ang II–induced hypertension and intracranial injection of elastase in the basal cistern. Mice received elastase+Ang II alone or a combination of elastase+Ang II+Ang 1–7. Aneurysm formation, prevalence of subarachnoid hemorrhage, mortality, and expression of molecules involved in vascular injury were assessed. Systolic blood pressure was similar in mice receiving elastase+Ang II (mean±SE, 148±5 mm Hg) or elastase+Ang II+Ang 1–7 (144±5 mm Hg). Aneurysm formation was also similar in mice receiving elastase+Ang II (89%) or elastase+Ang II+Ang 1–7 (84%). However, mice that received elastase+Ang II+Ang 1–7 had reduced mortality (from 64% to 36%; P
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Because Ang 1–7 acts on Mas receptors and generally counteracts deleterious effects of Ang II, we tested the hypothesis that Ang 1–7 attenuates formation and rupture of intracranial aneurysms. Intracranial aneurysms were induced in wild-type and Mas receptor–deficient mice using a combination of Ang II–induced hypertension and intracranial injection of elastase in the basal cistern. Mice received elastase+Ang II alone or a combination of elastase+Ang II+Ang 1–7. Aneurysm formation, prevalence of subarachnoid hemorrhage, mortality, and expression of molecules involved in vascular injury were assessed. Systolic blood pressure was similar in mice receiving elastase+Ang II (mean±SE, 148±5 mm Hg) or elastase+Ang II+Ang 1–7 (144±5 mm Hg). Aneurysm formation was also similar in mice receiving elastase+Ang II (89%) or elastase+Ang II+Ang 1–7 (84%). However, mice that received elastase+Ang II+Ang 1–7 had reduced mortality (from 64% to 36%; P&lt;0.05) and prevalence of subarachnoid hemorrhage (from 75% to 48%; P&lt;0.05). In cerebral arteries, expression of the inflammatory markers, Nox2 and catalase increased similarly in elastase+Ang II or elastase+Ang II+Ang 1–7 groups. Ang 1–7 increased the expression of cyclooxygenase-2 and decreased the expression of matrix metalloproteinase-9 induced by elastase+Ang II (P&lt;0.05). In Mas receptor–deficient mice, systolic blood pressure, mortality, and prevalence of subarachnoid hemorrhage were similar (P&gt;0.05) in groups treated with elastase+Ang II or elastase+Ang II+Ang 1–7. The expression of Mas receptor was detected by immunohistochemistry in samples of human intracranial arteries and aneurysms. In conclusion, without attenuating Ang II–induced hypertension, Ang 1–7 decreased mortality and rupture of intracranial aneurysms in mice through a Mas receptor–dependent pathway.</description><identifier>ISSN: 0194-911X</identifier><identifier>EISSN: 1524-4563</identifier><identifier>DOI: 10.1161/HYPERTENSIONAHA.114.03415</identifier><identifier>PMID: 24799613</identifier><identifier>CODEN: HPRTDN</identifier><language>eng</language><publisher>Hagerstown, MD: American Heart Association, Inc</publisher><subject>Aneurysm, Ruptured - drug therapy ; Aneurysm, Ruptured - mortality ; Aneurysm, Ruptured - prevention &amp; control ; Angiotensin I - pharmacology ; Angiotensin I - therapeutic use ; Animals ; Arterial hypertension. Arterial hypotension ; Biological and medical sciences ; Blood and lymphatic vessels ; Blood Pressure - drug effects ; Cardiology. Vascular system ; Humans ; Intracranial Aneurysm - drug therapy ; Intracranial Aneurysm - mortality ; Medical sciences ; Mice ; Mice, Knockout ; Neurology ; Oxidative Stress - drug effects ; Peptide Fragments - pharmacology ; Peptide Fragments - therapeutic use ; Proto-Oncogene Proteins - genetics ; Proto-Oncogene Proteins - metabolism ; Receptors, G-Protein-Coupled - genetics ; Receptors, G-Protein-Coupled - metabolism ; Vascular diseases and vascular malformations of the nervous system</subject><ispartof>Hypertension (Dallas, Tex. 1979), 2014-08, Vol.64 (2), p.362-368</ispartof><rights>2014 American Heart Association, Inc</rights><rights>2015 INIST-CNRS</rights><rights>2014 American Heart Association, Inc.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c6435-f6a753ddb86d21a8f6e5795fc57047285dd8b74e0c0c0026eb8fe39f40f3bd353</citedby><cites>FETCH-LOGICAL-c6435-f6a753ddb86d21a8f6e5795fc57047285dd8b74e0c0c0026eb8fe39f40f3bd353</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,881,3674,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=28610653$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/24799613$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Peña Silva, Ricardo A</creatorcontrib><creatorcontrib>Kung, David K</creatorcontrib><creatorcontrib>Mitchell, Ian J</creatorcontrib><creatorcontrib>Alenina, Natalia</creatorcontrib><creatorcontrib>Bader, Michael</creatorcontrib><creatorcontrib>Santos, Robson A.S</creatorcontrib><creatorcontrib>Faraci, Frank M</creatorcontrib><creatorcontrib>Heistad, Donald D</creatorcontrib><creatorcontrib>Hasan, David M</creatorcontrib><title>Angiotensin 1–7 Reduces Mortality and Rupture of Intracranial Aneurysms in Mice</title><title>Hypertension (Dallas, Tex. 1979)</title><addtitle>Hypertension</addtitle><description>Angiotensin II (Ang II) stimulates vascular inflammation, oxidative stress, and formation and rupture of intracranial aneurysms in mice. Because Ang 1–7 acts on Mas receptors and generally counteracts deleterious effects of Ang II, we tested the hypothesis that Ang 1–7 attenuates formation and rupture of intracranial aneurysms. Intracranial aneurysms were induced in wild-type and Mas receptor–deficient mice using a combination of Ang II–induced hypertension and intracranial injection of elastase in the basal cistern. Mice received elastase+Ang II alone or a combination of elastase+Ang II+Ang 1–7. Aneurysm formation, prevalence of subarachnoid hemorrhage, mortality, and expression of molecules involved in vascular injury were assessed. Systolic blood pressure was similar in mice receiving elastase+Ang II (mean±SE, 148±5 mm Hg) or elastase+Ang II+Ang 1–7 (144±5 mm Hg). Aneurysm formation was also similar in mice receiving elastase+Ang II (89%) or elastase+Ang II+Ang 1–7 (84%). However, mice that received elastase+Ang II+Ang 1–7 had reduced mortality (from 64% to 36%; P&lt;0.05) and prevalence of subarachnoid hemorrhage (from 75% to 48%; P&lt;0.05). In cerebral arteries, expression of the inflammatory markers, Nox2 and catalase increased similarly in elastase+Ang II or elastase+Ang II+Ang 1–7 groups. Ang 1–7 increased the expression of cyclooxygenase-2 and decreased the expression of matrix metalloproteinase-9 induced by elastase+Ang II (P&lt;0.05). In Mas receptor–deficient mice, systolic blood pressure, mortality, and prevalence of subarachnoid hemorrhage were similar (P&gt;0.05) in groups treated with elastase+Ang II or elastase+Ang II+Ang 1–7. The expression of Mas receptor was detected by immunohistochemistry in samples of human intracranial arteries and aneurysms. In conclusion, without attenuating Ang II–induced hypertension, Ang 1–7 decreased mortality and rupture of intracranial aneurysms in mice through a Mas receptor–dependent pathway.</description><subject>Aneurysm, Ruptured - drug therapy</subject><subject>Aneurysm, Ruptured - mortality</subject><subject>Aneurysm, Ruptured - prevention &amp; control</subject><subject>Angiotensin I - pharmacology</subject><subject>Angiotensin I - therapeutic use</subject><subject>Animals</subject><subject>Arterial hypertension. Arterial hypotension</subject><subject>Biological and medical sciences</subject><subject>Blood and lymphatic vessels</subject><subject>Blood Pressure - drug effects</subject><subject>Cardiology. Vascular system</subject><subject>Humans</subject><subject>Intracranial Aneurysm - drug therapy</subject><subject>Intracranial Aneurysm - mortality</subject><subject>Medical sciences</subject><subject>Mice</subject><subject>Mice, Knockout</subject><subject>Neurology</subject><subject>Oxidative Stress - drug effects</subject><subject>Peptide Fragments - pharmacology</subject><subject>Peptide Fragments - therapeutic use</subject><subject>Proto-Oncogene Proteins - genetics</subject><subject>Proto-Oncogene Proteins - metabolism</subject><subject>Receptors, G-Protein-Coupled - genetics</subject><subject>Receptors, G-Protein-Coupled - metabolism</subject><subject>Vascular diseases and vascular malformations of the nervous system</subject><issn>0194-911X</issn><issn>1524-4563</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkctu1DAUhi0EotPCK6CwQOomxY4vSRYgRdXAjNQLDEWCleU4xx2DxxnspNXseAfekCfBwwzlskJeWDrnO__5dX6EnhJ8Qoggz2cf30wXV9OLd_PLi2bWpCI7wZQRfg9NCC9Yzrig99EEk5rlNSEfDtBhjJ8wJoyx8iE6KFhZ14LQCXrb-GvbD-Cj9Rn5_vVbmS2gGzXE7LwPg3J22GTKd9liXA9jgKw32dwPQemgvFUuazyMYRNXMUsC51bDI_TAKBfh8f4_Qu9fTa9OZ_nZ5ev5aXOWa8Eoz41QJadd11aiK4iqjABe1txoXmJWFhXvuqotGWCdHi4EtJUBWhuGDW07yukRernTXY_tCjoNW1dOroNdqbCRvbLy7463S3nd30iGa8GKIgkc7wVC_2WEOMiVjRqcUx76MUrC07Foxcl2V71DdehjDGDu1hAst5HIfyJJRSZ_RpJmn_zp827yVwYJeLYHVNTKmXRYbeNvrhIEC77lXuy4294NEOJnN95CkEtQblj-h5EfR5SsGg</recordid><startdate>201408</startdate><enddate>201408</enddate><creator>Peña Silva, Ricardo A</creator><creator>Kung, David K</creator><creator>Mitchell, Ian J</creator><creator>Alenina, Natalia</creator><creator>Bader, Michael</creator><creator>Santos, Robson A.S</creator><creator>Faraci, Frank M</creator><creator>Heistad, Donald D</creator><creator>Hasan, David M</creator><general>American Heart Association, Inc</general><general>Lippincott Williams &amp; Wilkins</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>7X8</scope><scope>5PM</scope></search><sort><creationdate>201408</creationdate><title>Angiotensin 1–7 Reduces Mortality and Rupture of Intracranial Aneurysms in Mice</title><author>Peña Silva, Ricardo A ; Kung, David K ; Mitchell, Ian J ; Alenina, Natalia ; Bader, Michael ; Santos, Robson A.S ; Faraci, Frank M ; Heistad, Donald D ; Hasan, David M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c6435-f6a753ddb86d21a8f6e5795fc57047285dd8b74e0c0c0026eb8fe39f40f3bd353</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Aneurysm, Ruptured - drug therapy</topic><topic>Aneurysm, Ruptured - mortality</topic><topic>Aneurysm, Ruptured - prevention &amp; control</topic><topic>Angiotensin I - pharmacology</topic><topic>Angiotensin I - therapeutic use</topic><topic>Animals</topic><topic>Arterial hypertension. 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Vascular system</topic><topic>Humans</topic><topic>Intracranial Aneurysm - drug therapy</topic><topic>Intracranial Aneurysm - mortality</topic><topic>Medical sciences</topic><topic>Mice</topic><topic>Mice, Knockout</topic><topic>Neurology</topic><topic>Oxidative Stress - drug effects</topic><topic>Peptide Fragments - pharmacology</topic><topic>Peptide Fragments - therapeutic use</topic><topic>Proto-Oncogene Proteins - genetics</topic><topic>Proto-Oncogene Proteins - metabolism</topic><topic>Receptors, G-Protein-Coupled - genetics</topic><topic>Receptors, G-Protein-Coupled - metabolism</topic><topic>Vascular diseases and vascular malformations of the nervous system</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Peña Silva, Ricardo A</creatorcontrib><creatorcontrib>Kung, David K</creatorcontrib><creatorcontrib>Mitchell, Ian J</creatorcontrib><creatorcontrib>Alenina, Natalia</creatorcontrib><creatorcontrib>Bader, Michael</creatorcontrib><creatorcontrib>Santos, Robson A.S</creatorcontrib><creatorcontrib>Faraci, Frank M</creatorcontrib><creatorcontrib>Heistad, Donald D</creatorcontrib><creatorcontrib>Hasan, David M</creatorcontrib><collection>Pascal-Francis</collection><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><collection>PubMed Central (Full Participant titles)</collection><jtitle>Hypertension (Dallas, Tex. 1979)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Peña Silva, Ricardo A</au><au>Kung, David K</au><au>Mitchell, Ian J</au><au>Alenina, Natalia</au><au>Bader, Michael</au><au>Santos, Robson A.S</au><au>Faraci, Frank M</au><au>Heistad, Donald D</au><au>Hasan, David M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Angiotensin 1–7 Reduces Mortality and Rupture of Intracranial Aneurysms in Mice</atitle><jtitle>Hypertension (Dallas, Tex. 1979)</jtitle><addtitle>Hypertension</addtitle><date>2014-08</date><risdate>2014</risdate><volume>64</volume><issue>2</issue><spage>362</spage><epage>368</epage><pages>362-368</pages><issn>0194-911X</issn><eissn>1524-4563</eissn><coden>HPRTDN</coden><abstract>Angiotensin II (Ang II) stimulates vascular inflammation, oxidative stress, and formation and rupture of intracranial aneurysms in mice. Because Ang 1–7 acts on Mas receptors and generally counteracts deleterious effects of Ang II, we tested the hypothesis that Ang 1–7 attenuates formation and rupture of intracranial aneurysms. Intracranial aneurysms were induced in wild-type and Mas receptor–deficient mice using a combination of Ang II–induced hypertension and intracranial injection of elastase in the basal cistern. Mice received elastase+Ang II alone or a combination of elastase+Ang II+Ang 1–7. Aneurysm formation, prevalence of subarachnoid hemorrhage, mortality, and expression of molecules involved in vascular injury were assessed. Systolic blood pressure was similar in mice receiving elastase+Ang II (mean±SE, 148±5 mm Hg) or elastase+Ang II+Ang 1–7 (144±5 mm Hg). Aneurysm formation was also similar in mice receiving elastase+Ang II (89%) or elastase+Ang II+Ang 1–7 (84%). However, mice that received elastase+Ang II+Ang 1–7 had reduced mortality (from 64% to 36%; P&lt;0.05) and prevalence of subarachnoid hemorrhage (from 75% to 48%; P&lt;0.05). In cerebral arteries, expression of the inflammatory markers, Nox2 and catalase increased similarly in elastase+Ang II or elastase+Ang II+Ang 1–7 groups. Ang 1–7 increased the expression of cyclooxygenase-2 and decreased the expression of matrix metalloproteinase-9 induced by elastase+Ang II (P&lt;0.05). In Mas receptor–deficient mice, systolic blood pressure, mortality, and prevalence of subarachnoid hemorrhage were similar (P&gt;0.05) in groups treated with elastase+Ang II or elastase+Ang II+Ang 1–7. The expression of Mas receptor was detected by immunohistochemistry in samples of human intracranial arteries and aneurysms. In conclusion, without attenuating Ang II–induced hypertension, Ang 1–7 decreased mortality and rupture of intracranial aneurysms in mice through a Mas receptor–dependent pathway.</abstract><cop>Hagerstown, MD</cop><pub>American Heart Association, Inc</pub><pmid>24799613</pmid><doi>10.1161/HYPERTENSIONAHA.114.03415</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record>
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subjects Aneurysm, Ruptured - drug therapy
Aneurysm, Ruptured - mortality
Aneurysm, Ruptured - prevention & control
Angiotensin I - pharmacology
Angiotensin I - therapeutic use
Animals
Arterial hypertension. Arterial hypotension
Biological and medical sciences
Blood and lymphatic vessels
Blood Pressure - drug effects
Cardiology. Vascular system
Humans
Intracranial Aneurysm - drug therapy
Intracranial Aneurysm - mortality
Medical sciences
Mice
Mice, Knockout
Neurology
Oxidative Stress - drug effects
Peptide Fragments - pharmacology
Peptide Fragments - therapeutic use
Proto-Oncogene Proteins - genetics
Proto-Oncogene Proteins - metabolism
Receptors, G-Protein-Coupled - genetics
Receptors, G-Protein-Coupled - metabolism
Vascular diseases and vascular malformations of the nervous system
title Angiotensin 1–7 Reduces Mortality and Rupture of Intracranial Aneurysms in Mice
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