1 resultado para Thermal Performance Regulation
em Repositório da Universidade Federal do Espírito Santo (UFES), Brazil
Filtro por publicador
- Academic Research Repository at Institute of Developing Economies (4)
- AMS Tesi di Dottorato - Alm@DL - Università di Bologna (14)
- AMS Tesi di Laurea - Alm@DL - Università di Bologna (4)
- Aquatic Commons (1)
- ArchiMeD - Elektronische Publikationen der Universität Mainz - Alemanha (2)
- Archimer: Archive de l'Institut francais de recherche pour l'exploitation de la mer (2)
- Archive of European Integration (1)
- Archivo Digital para la Docencia y la Investigación - Repositorio Institucional de la Universidad del País Vasco (1)
- Aston University Research Archive (48)
- Biblioteca de Teses e Dissertações da USP (4)
- Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (13)
- Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI/USP) (237)
- BORIS: Bern Open Repository and Information System - Berna - Suiça (16)
- Brock University, Canada (5)
- CaltechTHESIS (1)
- CentAUR: Central Archive University of Reading - UK (37)
- Cochin University of Science & Technology (CUSAT), India (2)
- Coffee Science - Universidade Federal de Lavras (3)
- Comissão Econômica para a América Latina e o Caribe (CEPAL) (2)
- Consorci de Serveis Universitaris de Catalunya (CSUC), Spain (10)
- Cor-Ciencia - Acuerdo de Bibliotecas Universitarias de Córdoba (ABUC), Argentina (1)
- CORA - Cork Open Research Archive - University College Cork - Ireland (1)
- Dalarna University College Electronic Archive (18)
- Digital Commons - Michigan Tech (11)
- Digital Commons @ DU | University of Denver Research (1)
- Digital Commons at Florida International University (9)
- Digital Repository at Iowa State University (1)
- DigitalCommons@The Texas Medical Center (2)
- DigitalCommons@University of Nebraska - Lincoln (2)
- Doria (National Library of Finland DSpace Services) - National Library of Finland, Finland (20)
- DRUM (Digital Repository at the University of Maryland) (7)
- Duke University (2)
- FUNDAJ - Fundação Joaquim Nabuco (1)
- Galway Mayo Institute of Technology, Ireland (2)
- Glasgow Theses Service (3)
- Illinois Digital Environment for Access to Learning and Scholarship Repository (1)
- Institutional Repository of Leibniz University Hannover (1)
- INSTITUTO DE PESQUISAS ENERGÉTICAS E NUCLEARES (IPEN) - Repositório Digital da Produção Técnico Científica - BibliotecaTerezine Arantes Ferra (2)
- Instituto Politécnico de Viseu (1)
- Instituto Politécnico do Porto, Portugal (15)
- Iowa Publications Online (IPO) - State Library, State of Iowa (Iowa), United States (22)
- Laboratório Nacional de Energia e Geologia - Portugal (1)
- Lume - Repositório Digital da Universidade Federal do Rio Grande do Sul (1)
- National Center for Biotechnology Information - NCBI (3)
- Publishing Network for Geoscientific & Environmental Data (8)
- QSpace: Queen's University - Canada (3)
- QUB Research Portal - Research Directory and Institutional Repository for Queen's University Belfast (6)
- RCAAP - Repositório Científico de Acesso Aberto de Portugal (1)
- RDBU - Repositório Digital da Biblioteca da Unisinos (1)
- Repositório Científico da Universidade de Évora - Portugal (1)
- Repositório Científico do Instituto Politécnico de Lisboa - Portugal (4)
- Repositório da Produção Científica e Intelectual da Unicamp (40)
- Repositório da Universidade Federal do Espírito Santo (UFES), Brazil (1)
- Repositório digital da Fundação Getúlio Vargas - FGV (3)
- Repositório Digital da UNIVERSIDADE DA MADEIRA - Portugal (1)
- Repositório Institucional da Universidade Federal do Rio Grande do Norte (10)
- Repositório Institucional UNESP - Universidade Estadual Paulista "Julio de Mesquita Filho" (59)
- Research Open Access Repository of the University of East London. (1)
- RUN (Repositório da Universidade Nova de Lisboa) - FCT (Faculdade de Cienecias e Technologia), Universidade Nova de Lisboa (UNL), Portugal (6)
- SAPIENTIA - Universidade do Algarve - Portugal (1)
- Scielo Saúde Pública - SP (12)
- The Scholarly Commons | School of Hotel Administration; Cornell University Research (1)
- Universidad de Alicante (7)
- Universidad del Rosario, Colombia (2)
- Universidad Politécnica de Madrid (45)
- Universidade de Lisboa - Repositório Aberto (1)
- Universidade do Minho (18)
- Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP) (2)
- Universidade Federal do Pará (3)
- Universidade Federal do Rio Grande do Norte (UFRN) (40)
- Université de Lausanne, Switzerland (21)
- Université de Montréal, Canada (3)
- Université Laval Mémoires et thèses électroniques (1)
- University of Canberra Research Repository - Australia (1)
- University of Connecticut - USA (1)
- University of Michigan (5)
- University of Queensland eSpace - Australia (55)
- University of Washington (1)
Resumo:
Myocardial infarction leads to compensatory ventricular remodeling. Disturbances in myocardial contractility depend on the active transport of Ca2+ and Na+, which are regulated by Na+-K+ ATPase. Inappropriate regulation of Na+-K+ ATPase activity leads to excessive loss of K+ and gain of Na+ by the cell. We determined the participation of Na+-K+ ATPase in ventricular performance early and late after myocardial infarction. Wistar rats (8-10 per group) underwent left coronary artery ligation (infarcted, Inf) or sham-operation (Sham). Ventricular performance was measured at 3 and 30 days after surgery using the Langendorff technique. Left ventricular systolic pressure was obtained under different ventricular diastolic pressures and increased extracellular Ca2+ concentrations (Ca2+e) and after low and high ouabain concentrations. The baseline coronary perfusion pressure increased 3 days after myocardial infarction and normalized by 30 days (Sham 3 = 88 ± 6; Inf 3 = 130 ± 9; Inf 30 = 92 ± 7 mmHg; P < 0.05). The inotropic response to Ca2+e and ouabain was reduced at 3 and 30 days after myocardial infarction (Ca2+ = 1.25 mM; Sham 3 = 70 ± 3; Inf 3 = 45 ± 2; Inf 30 = 29 ± 3 mmHg; P < 0.05), while the Frank-Starling mechanism was preserved. At 3 and 30 days after myocardial infarction, ventricular Na+-K+ ATPase activity and contractility were reduced. This Na+-K+ ATPase hypoactivity may modify the Na+, K+ and Ca2+ transport across the sarcolemma resulting in ventricular dysfunction.