Progression from compensated hypertrophy to failure in the pressure-overloaded human heart: Structural deterioration and compensatory mechanisms

The progression of compensated hypertrophy to heart failure (HF) is still debated. We investigated patients with isolated valvular aortic stenosis and differing degrees of left ventricular (LV) systolic dysfunction to test the hypothesis that structural remodeling, as well as cell death, contributes...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Circulation (New York, N.Y.) N.Y.), 2003-02, Vol.107 (7), p.984-991
Hauptverfasser: HEIN, Stefan, ARNON, Eyal, KOSTIN, Sawa, SCHÖNBURG, Markus, ELSÄSSER, Albrecht, POLYAKOVA, Victoria, BAUER, Erwin P, KLÖVEKORN, Wolf-Peter, SCHAPER, Jutta
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 991
container_issue 7
container_start_page 984
container_title Circulation (New York, N.Y.)
container_volume 107
creator HEIN, Stefan
ARNON, Eyal
KOSTIN, Sawa
SCHÖNBURG, Markus
ELSÄSSER, Albrecht
POLYAKOVA, Victoria
BAUER, Erwin P
KLÖVEKORN, Wolf-Peter
SCHAPER, Jutta
description The progression of compensated hypertrophy to heart failure (HF) is still debated. We investigated patients with isolated valvular aortic stenosis and differing degrees of left ventricular (LV) systolic dysfunction to test the hypothesis that structural remodeling, as well as cell death, contributes to the transition to HF. Structural alterations were studied in LV myectomies from 3 groups of patients (group 1: ejection fraction [EF] >50%, n=12; group 2: EF 30% to 50%, n=12; group 3: EF
doi_str_mv 10.1161/01.CIR.0000051865.66123.B7
format Article
fullrecord <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_73050372</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>73050372</sourcerecordid><originalsourceid>FETCH-LOGICAL-c413t-83a658b9254537a4f482cf8b31e81e0b68fa69bcb050b155d06c2082257bc2203</originalsourceid><addsrcrecordid>eNpdkduK1TAUhoMoznb0FSQM6F1rDk3aPXfOxsPAgOLhOqTpqu3QJnUlHdhv4SObOhs2mJuwWN-fleQj5IqzknPN3zFeHm6_lWxbijdalVpzIcub-gnZcSWqolJy_5Tscn9f1FKIC_Iixvtcalmr5-SCC51bnO_In68YfiHEOAZPewwzdWFewEeboKPDcQFMGJbhSFOgvR2nFYGOnqYB6LLlcl2EB8Ap2G5LrLP1dACL6Zp-T7i6tKKdaAcJcAxo0zbI-u48J-CRzuAG68c4x5fkWW-nCK9O-yX5-fHDj8Pn4u7Lp9vD-7vCVVymopFWq6bdC5XfWtuqrxrh-qaVHBoOrNVNb_W-dS1TrOVKdUw7wRohVN06IZi8JG8fz10w_F4hJjOP0cE0WQ9hjaaWOSlrkcGr_8D7sKLPdzMi_6NuuOAZun6EHIYYEXqz4DhbPBrOzCbNMG6yNHOWZv5JMzd1Dr8-TVjbGbpz9GQpA29OgI3OTj1a78Z45irNdNYs_wKm1KL7</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>212668121</pqid></control><display><type>article</type><title>Progression from compensated hypertrophy to failure in the pressure-overloaded human heart: Structural deterioration and compensatory mechanisms</title><source>MEDLINE</source><source>American Heart Association Journals</source><source>EZB-FREE-00999 freely available EZB journals</source><source>Journals@Ovid Complete</source><creator>HEIN, Stefan ; ARNON, Eyal ; KOSTIN, Sawa ; SCHÖNBURG, Markus ; ELSÄSSER, Albrecht ; POLYAKOVA, Victoria ; BAUER, Erwin P ; KLÖVEKORN, Wolf-Peter ; SCHAPER, Jutta</creator><creatorcontrib>HEIN, Stefan ; ARNON, Eyal ; KOSTIN, Sawa ; SCHÖNBURG, Markus ; ELSÄSSER, Albrecht ; POLYAKOVA, Victoria ; BAUER, Erwin P ; KLÖVEKORN, Wolf-Peter ; SCHAPER, Jutta</creatorcontrib><description>The progression of compensated hypertrophy to heart failure (HF) is still debated. We investigated patients with isolated valvular aortic stenosis and differing degrees of left ventricular (LV) systolic dysfunction to test the hypothesis that structural remodeling, as well as cell death, contributes to the transition to HF. Structural alterations were studied in LV myectomies from 3 groups of patients (group 1: ejection fraction [EF] &gt;50%, n=12; group 2: EF 30% to 50%, n=12; group 3: EF &lt;30%, n=10) undergoing aortic valve replacement. Control patients were patients with mitral valve stenosis but normal LV (n=6). Myocyte hypertrophy was accompanied by increased nuclear DNA and Sc-35 (splicing factor) content. ACE and TGF-beta1 were upregulated correlating with fibrosis, which increased 2.3-, 2.2-, and 3.2-fold over control in the 3 groups. Myocyte degeneration increased 10, 22, and 32 times over control. A significant correlation exists between EF and myocyte degeneration or fibrosis. Ubiquitin-related autophagic cell death was 0.5 per thousand in control and group 1, 1.05 in group 2, and 6.05 per thousand in group 3. Death by oncosis was 0 per thousand in control, 3 per thousand in group 1, and increased to 5 per thousand (groups 2 and 3). Apoptosis was not detectable in control and group 3, but it was present at 0.02 per thousand in group 1 and 0.01 per thousand in group 2. Cardiomyocyte mitosis was never observed. These structure-function correlations confirm the hypothesis that transition to HF occurs by fibrosis and myocyte degeneration partially compensated by hypertrophy involving DNA synthesis and transcription. Cell loss, mainly by autophagy and oncosis, contributes significantly to the progression of LV systolic dysfunction.</description><identifier>ISSN: 0009-7322</identifier><identifier>EISSN: 1524-4539</identifier><identifier>DOI: 10.1161/01.CIR.0000051865.66123.B7</identifier><identifier>PMID: 12600911</identifier><identifier>CODEN: CIRCAZ</identifier><language>eng</language><publisher>Hagerstown, MD: Lippincott Williams &amp; Wilkins</publisher><subject>Aged ; Aortic Valve Stenosis - complications ; Aortic Valve Stenosis - pathology ; Aortic Valve Stenosis - physiopathology ; Biological and medical sciences ; Capillaries - anatomy &amp; histology ; Capillaries - chemistry ; Cardiology. Vascular system ; Cardiomegaly - complications ; Cardiomegaly - pathology ; Cardiomegaly - physiopathology ; Cell Death ; Cell Nucleus - genetics ; Disease Progression ; DNA - analysis ; Female ; Fibrosis ; Heart ; Heart Failure - etiology ; Heart failure, cardiogenic pulmonary edema, cardiac enlargement ; Hemodynamics ; Humans ; Inflammation - etiology ; Male ; Medical sciences ; Models, Cardiovascular ; Myocytes, Cardiac - pathology ; Myocytes, Cardiac - ultrastructure ; Nuclear Proteins - analysis ; Peptidyl-Dipeptidase A - analysis ; Ribonucleoproteins ; Serine-Arginine Splicing Factors ; Transforming Growth Factor beta - analysis ; Transforming Growth Factor beta1 ; Ventricular Dysfunction, Left - complications ; Ventricular Dysfunction, Left - pathology ; Ventricular Dysfunction, Left - physiopathology ; Ventricular Pressure</subject><ispartof>Circulation (New York, N.Y.), 2003-02, Vol.107 (7), p.984-991</ispartof><rights>2003 INIST-CNRS</rights><rights>Copyright American Heart Association, Inc. Feb 25 2003</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c413t-83a658b9254537a4f482cf8b31e81e0b68fa69bcb050b155d06c2082257bc2203</citedby><cites>FETCH-LOGICAL-c413t-83a658b9254537a4f482cf8b31e81e0b68fa69bcb050b155d06c2082257bc2203</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,3674,27901,27902</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&amp;idt=14606732$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/12600911$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>HEIN, Stefan</creatorcontrib><creatorcontrib>ARNON, Eyal</creatorcontrib><creatorcontrib>KOSTIN, Sawa</creatorcontrib><creatorcontrib>SCHÖNBURG, Markus</creatorcontrib><creatorcontrib>ELSÄSSER, Albrecht</creatorcontrib><creatorcontrib>POLYAKOVA, Victoria</creatorcontrib><creatorcontrib>BAUER, Erwin P</creatorcontrib><creatorcontrib>KLÖVEKORN, Wolf-Peter</creatorcontrib><creatorcontrib>SCHAPER, Jutta</creatorcontrib><title>Progression from compensated hypertrophy to failure in the pressure-overloaded human heart: Structural deterioration and compensatory mechanisms</title><title>Circulation (New York, N.Y.)</title><addtitle>Circulation</addtitle><description>The progression of compensated hypertrophy to heart failure (HF) is still debated. We investigated patients with isolated valvular aortic stenosis and differing degrees of left ventricular (LV) systolic dysfunction to test the hypothesis that structural remodeling, as well as cell death, contributes to the transition to HF. Structural alterations were studied in LV myectomies from 3 groups of patients (group 1: ejection fraction [EF] &gt;50%, n=12; group 2: EF 30% to 50%, n=12; group 3: EF &lt;30%, n=10) undergoing aortic valve replacement. Control patients were patients with mitral valve stenosis but normal LV (n=6). Myocyte hypertrophy was accompanied by increased nuclear DNA and Sc-35 (splicing factor) content. ACE and TGF-beta1 were upregulated correlating with fibrosis, which increased 2.3-, 2.2-, and 3.2-fold over control in the 3 groups. Myocyte degeneration increased 10, 22, and 32 times over control. A significant correlation exists between EF and myocyte degeneration or fibrosis. Ubiquitin-related autophagic cell death was 0.5 per thousand in control and group 1, 1.05 in group 2, and 6.05 per thousand in group 3. Death by oncosis was 0 per thousand in control, 3 per thousand in group 1, and increased to 5 per thousand (groups 2 and 3). Apoptosis was not detectable in control and group 3, but it was present at 0.02 per thousand in group 1 and 0.01 per thousand in group 2. Cardiomyocyte mitosis was never observed. These structure-function correlations confirm the hypothesis that transition to HF occurs by fibrosis and myocyte degeneration partially compensated by hypertrophy involving DNA synthesis and transcription. Cell loss, mainly by autophagy and oncosis, contributes significantly to the progression of LV systolic dysfunction.</description><subject>Aged</subject><subject>Aortic Valve Stenosis - complications</subject><subject>Aortic Valve Stenosis - pathology</subject><subject>Aortic Valve Stenosis - physiopathology</subject><subject>Biological and medical sciences</subject><subject>Capillaries - anatomy &amp; histology</subject><subject>Capillaries - chemistry</subject><subject>Cardiology. Vascular system</subject><subject>Cardiomegaly - complications</subject><subject>Cardiomegaly - pathology</subject><subject>Cardiomegaly - physiopathology</subject><subject>Cell Death</subject><subject>Cell Nucleus - genetics</subject><subject>Disease Progression</subject><subject>DNA - analysis</subject><subject>Female</subject><subject>Fibrosis</subject><subject>Heart</subject><subject>Heart Failure - etiology</subject><subject>Heart failure, cardiogenic pulmonary edema, cardiac enlargement</subject><subject>Hemodynamics</subject><subject>Humans</subject><subject>Inflammation - etiology</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Models, Cardiovascular</subject><subject>Myocytes, Cardiac - pathology</subject><subject>Myocytes, Cardiac - ultrastructure</subject><subject>Nuclear Proteins - analysis</subject><subject>Peptidyl-Dipeptidase A - analysis</subject><subject>Ribonucleoproteins</subject><subject>Serine-Arginine Splicing Factors</subject><subject>Transforming Growth Factor beta - analysis</subject><subject>Transforming Growth Factor beta1</subject><subject>Ventricular Dysfunction, Left - complications</subject><subject>Ventricular Dysfunction, Left - pathology</subject><subject>Ventricular Dysfunction, Left - physiopathology</subject><subject>Ventricular Pressure</subject><issn>0009-7322</issn><issn>1524-4539</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpdkduK1TAUhoMoznb0FSQM6F1rDk3aPXfOxsPAgOLhOqTpqu3QJnUlHdhv4SObOhs2mJuwWN-fleQj5IqzknPN3zFeHm6_lWxbijdalVpzIcub-gnZcSWqolJy_5Tscn9f1FKIC_Iixvtcalmr5-SCC51bnO_In68YfiHEOAZPewwzdWFewEeboKPDcQFMGJbhSFOgvR2nFYGOnqYB6LLlcl2EB8Ap2G5LrLP1dACL6Zp-T7i6tKKdaAcJcAxo0zbI-u48J-CRzuAG68c4x5fkWW-nCK9O-yX5-fHDj8Pn4u7Lp9vD-7vCVVymopFWq6bdC5XfWtuqrxrh-qaVHBoOrNVNb_W-dS1TrOVKdUw7wRohVN06IZi8JG8fz10w_F4hJjOP0cE0WQ9hjaaWOSlrkcGr_8D7sKLPdzMi_6NuuOAZun6EHIYYEXqz4DhbPBrOzCbNMG6yNHOWZv5JMzd1Dr8-TVjbGbpz9GQpA29OgI3OTj1a78Z45irNdNYs_wKm1KL7</recordid><startdate>20030225</startdate><enddate>20030225</enddate><creator>HEIN, Stefan</creator><creator>ARNON, Eyal</creator><creator>KOSTIN, Sawa</creator><creator>SCHÖNBURG, Markus</creator><creator>ELSÄSSER, Albrecht</creator><creator>POLYAKOVA, Victoria</creator><creator>BAUER, Erwin P</creator><creator>KLÖVEKORN, Wolf-Peter</creator><creator>SCHAPER, Jutta</creator><general>Lippincott Williams &amp; Wilkins</general><general>American Heart Association, Inc</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>NAPCQ</scope><scope>U9A</scope><scope>7X8</scope></search><sort><creationdate>20030225</creationdate><title>Progression from compensated hypertrophy to failure in the pressure-overloaded human heart: Structural deterioration and compensatory mechanisms</title><author>HEIN, Stefan ; ARNON, Eyal ; KOSTIN, Sawa ; SCHÖNBURG, Markus ; ELSÄSSER, Albrecht ; POLYAKOVA, Victoria ; BAUER, Erwin P ; KLÖVEKORN, Wolf-Peter ; SCHAPER, Jutta</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c413t-83a658b9254537a4f482cf8b31e81e0b68fa69bcb050b155d06c2082257bc2203</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Aged</topic><topic>Aortic Valve Stenosis - complications</topic><topic>Aortic Valve Stenosis - pathology</topic><topic>Aortic Valve Stenosis - physiopathology</topic><topic>Biological and medical sciences</topic><topic>Capillaries - anatomy &amp; histology</topic><topic>Capillaries - chemistry</topic><topic>Cardiology. Vascular system</topic><topic>Cardiomegaly - complications</topic><topic>Cardiomegaly - pathology</topic><topic>Cardiomegaly - physiopathology</topic><topic>Cell Death</topic><topic>Cell Nucleus - genetics</topic><topic>Disease Progression</topic><topic>DNA - analysis</topic><topic>Female</topic><topic>Fibrosis</topic><topic>Heart</topic><topic>Heart Failure - etiology</topic><topic>Heart failure, cardiogenic pulmonary edema, cardiac enlargement</topic><topic>Hemodynamics</topic><topic>Humans</topic><topic>Inflammation - etiology</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Models, Cardiovascular</topic><topic>Myocytes, Cardiac - pathology</topic><topic>Myocytes, Cardiac - ultrastructure</topic><topic>Nuclear Proteins - analysis</topic><topic>Peptidyl-Dipeptidase A - analysis</topic><topic>Ribonucleoproteins</topic><topic>Serine-Arginine Splicing Factors</topic><topic>Transforming Growth Factor beta - analysis</topic><topic>Transforming Growth Factor beta1</topic><topic>Ventricular Dysfunction, Left - complications</topic><topic>Ventricular Dysfunction, Left - pathology</topic><topic>Ventricular Dysfunction, Left - physiopathology</topic><topic>Ventricular Pressure</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>HEIN, Stefan</creatorcontrib><creatorcontrib>ARNON, Eyal</creatorcontrib><creatorcontrib>KOSTIN, Sawa</creatorcontrib><creatorcontrib>SCHÖNBURG, Markus</creatorcontrib><creatorcontrib>ELSÄSSER, Albrecht</creatorcontrib><creatorcontrib>POLYAKOVA, Victoria</creatorcontrib><creatorcontrib>BAUER, Erwin P</creatorcontrib><creatorcontrib>KLÖVEKORN, Wolf-Peter</creatorcontrib><creatorcontrib>SCHAPER, Jutta</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>ProQuest Health &amp; Medical Complete (Alumni)</collection><collection>Nursing &amp; Allied Health Premium</collection><collection>MEDLINE - Academic</collection><jtitle>Circulation (New York, N.Y.)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>HEIN, Stefan</au><au>ARNON, Eyal</au><au>KOSTIN, Sawa</au><au>SCHÖNBURG, Markus</au><au>ELSÄSSER, Albrecht</au><au>POLYAKOVA, Victoria</au><au>BAUER, Erwin P</au><au>KLÖVEKORN, Wolf-Peter</au><au>SCHAPER, Jutta</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Progression from compensated hypertrophy to failure in the pressure-overloaded human heart: Structural deterioration and compensatory mechanisms</atitle><jtitle>Circulation (New York, N.Y.)</jtitle><addtitle>Circulation</addtitle><date>2003-02-25</date><risdate>2003</risdate><volume>107</volume><issue>7</issue><spage>984</spage><epage>991</epage><pages>984-991</pages><issn>0009-7322</issn><eissn>1524-4539</eissn><coden>CIRCAZ</coden><abstract>The progression of compensated hypertrophy to heart failure (HF) is still debated. We investigated patients with isolated valvular aortic stenosis and differing degrees of left ventricular (LV) systolic dysfunction to test the hypothesis that structural remodeling, as well as cell death, contributes to the transition to HF. Structural alterations were studied in LV myectomies from 3 groups of patients (group 1: ejection fraction [EF] &gt;50%, n=12; group 2: EF 30% to 50%, n=12; group 3: EF &lt;30%, n=10) undergoing aortic valve replacement. Control patients were patients with mitral valve stenosis but normal LV (n=6). Myocyte hypertrophy was accompanied by increased nuclear DNA and Sc-35 (splicing factor) content. ACE and TGF-beta1 were upregulated correlating with fibrosis, which increased 2.3-, 2.2-, and 3.2-fold over control in the 3 groups. Myocyte degeneration increased 10, 22, and 32 times over control. A significant correlation exists between EF and myocyte degeneration or fibrosis. Ubiquitin-related autophagic cell death was 0.5 per thousand in control and group 1, 1.05 in group 2, and 6.05 per thousand in group 3. Death by oncosis was 0 per thousand in control, 3 per thousand in group 1, and increased to 5 per thousand (groups 2 and 3). Apoptosis was not detectable in control and group 3, but it was present at 0.02 per thousand in group 1 and 0.01 per thousand in group 2. Cardiomyocyte mitosis was never observed. These structure-function correlations confirm the hypothesis that transition to HF occurs by fibrosis and myocyte degeneration partially compensated by hypertrophy involving DNA synthesis and transcription. Cell loss, mainly by autophagy and oncosis, contributes significantly to the progression of LV systolic dysfunction.</abstract><cop>Hagerstown, MD</cop><pub>Lippincott Williams &amp; Wilkins</pub><pmid>12600911</pmid><doi>10.1161/01.CIR.0000051865.66123.B7</doi><tpages>8</tpages></addata></record>
fulltext fulltext
identifier ISSN: 0009-7322
ispartof Circulation (New York, N.Y.), 2003-02, Vol.107 (7), p.984-991
issn 0009-7322
1524-4539
language eng
recordid cdi_proquest_miscellaneous_73050372
source MEDLINE; American Heart Association Journals; EZB-FREE-00999 freely available EZB journals; Journals@Ovid Complete
subjects Aged
Aortic Valve Stenosis - complications
Aortic Valve Stenosis - pathology
Aortic Valve Stenosis - physiopathology
Biological and medical sciences
Capillaries - anatomy & histology
Capillaries - chemistry
Cardiology. Vascular system
Cardiomegaly - complications
Cardiomegaly - pathology
Cardiomegaly - physiopathology
Cell Death
Cell Nucleus - genetics
Disease Progression
DNA - analysis
Female
Fibrosis
Heart
Heart Failure - etiology
Heart failure, cardiogenic pulmonary edema, cardiac enlargement
Hemodynamics
Humans
Inflammation - etiology
Male
Medical sciences
Models, Cardiovascular
Myocytes, Cardiac - pathology
Myocytes, Cardiac - ultrastructure
Nuclear Proteins - analysis
Peptidyl-Dipeptidase A - analysis
Ribonucleoproteins
Serine-Arginine Splicing Factors
Transforming Growth Factor beta - analysis
Transforming Growth Factor beta1
Ventricular Dysfunction, Left - complications
Ventricular Dysfunction, Left - pathology
Ventricular Dysfunction, Left - physiopathology
Ventricular Pressure
title Progression from compensated hypertrophy to failure in the pressure-overloaded human heart: Structural deterioration and compensatory mechanisms
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-08T02%3A03%3A20IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Progression%20from%20compensated%20hypertrophy%20to%20failure%20in%20the%20pressure-overloaded%20human%20heart:%20Structural%20deterioration%20and%20compensatory%20mechanisms&rft.jtitle=Circulation%20(New%20York,%20N.Y.)&rft.au=HEIN,%20Stefan&rft.date=2003-02-25&rft.volume=107&rft.issue=7&rft.spage=984&rft.epage=991&rft.pages=984-991&rft.issn=0009-7322&rft.eissn=1524-4539&rft.coden=CIRCAZ&rft_id=info:doi/10.1161/01.CIR.0000051865.66123.B7&rft_dat=%3Cproquest_cross%3E73050372%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=212668121&rft_id=info:pmid/12600911&rfr_iscdi=true