The autocrine/paracrine loop after myocardial stretch: mineralocorticoid receptor activation

Autores
Ennis, Irene Lucía; Aiello, Ernesto Alejandro; Cingolani, Horacio Eugenio; Pérez, Néstor Gustavo
Año de publicación
2013
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The stretch of cardiac muscle increases developed force in two phases. The first phase, which occurs rapidly, constitutes the well-known Frank-Starling mechanism and it is generally attributed to enhanced myofilament responsiveness to Ca2+. The second phase or slow force response (SFR) occurs gradually and is due to an increase in the calcium transient amplitude as a result of a stretch-triggered autocrine/paracrine mechanism. We previously showed that Ca2+ entry through reverse Na+ /Ca2+ exchange underlies the SFR, as the final step of an autocrine/paracrine cascade involving release of angiotensin II/endothelin, and a Na+ /H+ exchanger (NHE-1) activation-mediated rise in Na+ . In the present review we mainly focus on our three latest contributions to the understanding of this signalling pathway triggered by myocardial stretch: 1) The finding that an increased production of reactive oxygen species (ROS) from mitochondrial origin is critical in the activation of the NHE-1 and therefore in the genesis of the SFR; 2) the demonstration of a key role played by the transactivation of the epidermal growth factor receptor; and 3) the involvement of mineralocorticoid receptors (MR) activation in the stretch-triggered cascade leading to the SFR. Among these novel contributions, the critical role played by the MR is perhaps the most important one. This finding may conceivably provide a mechanistic explanation to the recently discovered strikingly beneficial effects of MR antagonism in humans with cardiac hypertrophy and failure.
Centro de Investigaciones Cardiovasculares
Materia
Ciencias Médicas
Myocardial stretch
Slow force response
Anrep effect
Mineralocorticoid receptor
Reactive oxygen species
Na+ /H+ exchanger activation
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/106483

id SEDICI_c42f4fe35a2dc1f2b52a9bffcec679a6
oai_identifier_str oai:sedici.unlp.edu.ar:10915/106483
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling The autocrine/paracrine loop after myocardial stretch: mineralocorticoid receptor activationEnnis, Irene LucíaAiello, Ernesto AlejandroCingolani, Horacio EugenioPérez, Néstor GustavoCiencias MédicasMyocardial stretchSlow force responseAnrep effectMineralocorticoid receptorReactive oxygen speciesNa+ /H+ exchanger activationThe stretch of cardiac muscle increases developed force in two phases. The first phase, which occurs rapidly, constitutes the well-known Frank-Starling mechanism and it is generally attributed to enhanced myofilament responsiveness to Ca2+. The second phase or slow force response (SFR) occurs gradually and is due to an increase in the calcium transient amplitude as a result of a stretch-triggered autocrine/paracrine mechanism. We previously showed that Ca2+ entry through reverse Na+ /Ca2+ exchange underlies the SFR, as the final step of an autocrine/paracrine cascade involving release of angiotensin II/endothelin, and a Na+ /H+ exchanger (NHE-1) activation-mediated rise in Na+ . In the present review we mainly focus on our three latest contributions to the understanding of this signalling pathway triggered by myocardial stretch: 1) The finding that an increased production of reactive oxygen species (ROS) from mitochondrial origin is critical in the activation of the NHE-1 and therefore in the genesis of the SFR; 2) the demonstration of a key role played by the transactivation of the epidermal growth factor receptor; and 3) the involvement of mineralocorticoid receptors (MR) activation in the stretch-triggered cascade leading to the SFR. Among these novel contributions, the critical role played by the MR is perhaps the most important one. This finding may conceivably provide a mechanistic explanation to the recently discovered strikingly beneficial effects of MR antagonism in humans with cardiac hypertrophy and failure.Centro de Investigaciones Cardiovasculares2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf230-240http://sedici.unlp.edu.ar/handle/10915/106483spainfo:eu-repo/semantics/altIdentifier/url/http://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC3780348&blobtype=pdfinfo:eu-repo/semantics/altIdentifier/issn/1875-6557info:eu-repo/semantics/altIdentifier/pmid/23909633info:eu-repo/semantics/altIdentifier/doi/10.2174/1573403x113099990034info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:23:52Zoai:sedici.unlp.edu.ar:10915/106483Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:23:53.022SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv The autocrine/paracrine loop after myocardial stretch: mineralocorticoid receptor activation
title The autocrine/paracrine loop after myocardial stretch: mineralocorticoid receptor activation
spellingShingle The autocrine/paracrine loop after myocardial stretch: mineralocorticoid receptor activation
Ennis, Irene Lucía
Ciencias Médicas
Myocardial stretch
Slow force response
Anrep effect
Mineralocorticoid receptor
Reactive oxygen species
Na+ /H+ exchanger activation
title_short The autocrine/paracrine loop after myocardial stretch: mineralocorticoid receptor activation
title_full The autocrine/paracrine loop after myocardial stretch: mineralocorticoid receptor activation
title_fullStr The autocrine/paracrine loop after myocardial stretch: mineralocorticoid receptor activation
title_full_unstemmed The autocrine/paracrine loop after myocardial stretch: mineralocorticoid receptor activation
title_sort The autocrine/paracrine loop after myocardial stretch: mineralocorticoid receptor activation
dc.creator.none.fl_str_mv Ennis, Irene Lucía
Aiello, Ernesto Alejandro
Cingolani, Horacio Eugenio
Pérez, Néstor Gustavo
author Ennis, Irene Lucía
author_facet Ennis, Irene Lucía
Aiello, Ernesto Alejandro
Cingolani, Horacio Eugenio
Pérez, Néstor Gustavo
author_role author
author2 Aiello, Ernesto Alejandro
Cingolani, Horacio Eugenio
Pérez, Néstor Gustavo
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Médicas
Myocardial stretch
Slow force response
Anrep effect
Mineralocorticoid receptor
Reactive oxygen species
Na+ /H+ exchanger activation
topic Ciencias Médicas
Myocardial stretch
Slow force response
Anrep effect
Mineralocorticoid receptor
Reactive oxygen species
Na+ /H+ exchanger activation
dc.description.none.fl_txt_mv The stretch of cardiac muscle increases developed force in two phases. The first phase, which occurs rapidly, constitutes the well-known Frank-Starling mechanism and it is generally attributed to enhanced myofilament responsiveness to Ca2+. The second phase or slow force response (SFR) occurs gradually and is due to an increase in the calcium transient amplitude as a result of a stretch-triggered autocrine/paracrine mechanism. We previously showed that Ca2+ entry through reverse Na+ /Ca2+ exchange underlies the SFR, as the final step of an autocrine/paracrine cascade involving release of angiotensin II/endothelin, and a Na+ /H+ exchanger (NHE-1) activation-mediated rise in Na+ . In the present review we mainly focus on our three latest contributions to the understanding of this signalling pathway triggered by myocardial stretch: 1) The finding that an increased production of reactive oxygen species (ROS) from mitochondrial origin is critical in the activation of the NHE-1 and therefore in the genesis of the SFR; 2) the demonstration of a key role played by the transactivation of the epidermal growth factor receptor; and 3) the involvement of mineralocorticoid receptors (MR) activation in the stretch-triggered cascade leading to the SFR. Among these novel contributions, the critical role played by the MR is perhaps the most important one. This finding may conceivably provide a mechanistic explanation to the recently discovered strikingly beneficial effects of MR antagonism in humans with cardiac hypertrophy and failure.
Centro de Investigaciones Cardiovasculares
description The stretch of cardiac muscle increases developed force in two phases. The first phase, which occurs rapidly, constitutes the well-known Frank-Starling mechanism and it is generally attributed to enhanced myofilament responsiveness to Ca2+. The second phase or slow force response (SFR) occurs gradually and is due to an increase in the calcium transient amplitude as a result of a stretch-triggered autocrine/paracrine mechanism. We previously showed that Ca2+ entry through reverse Na+ /Ca2+ exchange underlies the SFR, as the final step of an autocrine/paracrine cascade involving release of angiotensin II/endothelin, and a Na+ /H+ exchanger (NHE-1) activation-mediated rise in Na+ . In the present review we mainly focus on our three latest contributions to the understanding of this signalling pathway triggered by myocardial stretch: 1) The finding that an increased production of reactive oxygen species (ROS) from mitochondrial origin is critical in the activation of the NHE-1 and therefore in the genesis of the SFR; 2) the demonstration of a key role played by the transactivation of the epidermal growth factor receptor; and 3) the involvement of mineralocorticoid receptors (MR) activation in the stretch-triggered cascade leading to the SFR. Among these novel contributions, the critical role played by the MR is perhaps the most important one. This finding may conceivably provide a mechanistic explanation to the recently discovered strikingly beneficial effects of MR antagonism in humans with cardiac hypertrophy and failure.
publishDate 2013
dc.date.none.fl_str_mv 2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://sedici.unlp.edu.ar/handle/10915/106483
url http://sedici.unlp.edu.ar/handle/10915/106483
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC3780348&blobtype=pdf
info:eu-repo/semantics/altIdentifier/issn/1875-6557
info:eu-repo/semantics/altIdentifier/pmid/23909633
info:eu-repo/semantics/altIdentifier/doi/10.2174/1573403x113099990034
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
230-240
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1844616115621199872
score 13.070432