Cardioprotective Solutions Exposure For 1 Hour in Hypoxia and Low Temperatures Affects Vascular Reactivity Differently
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Cardiovascular Surgery (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-76382021000200201 |
Resumo: | Abstract Introduction: Heart preservation benefits cardiac performance after operations decreasing morbidity but the contribution of the vascular reactivity has been neglected. Objective: We evaluated whether cardioprotective solutions, Krebs-Henseleit (KH), Bretschneider-HTK (BHTK), St. Thomas No. 1 (STH-1), and Celsior (CEL), affect vascular reactivity. Methods: Aortic rings from Wistar rats were used in two protocols. First, the rings were exposed to BHTK, STH-1 or CEL for 1 hour of hypoxia at 37 °C. Second, the rings were exposed to 10 °C or 20 °C for 1 hour under hypoxia. After treatment, the rings were immersed in KH at 37 °C, endothelial integrity was tested and concentration-response curves to phenylephrine were performed. Results: In the first protocol, the solutions did not damage the endothelium; CEL and BHTK reduced KCl-induced contractions but not STH-1; only CEL and BHTK reduced vascular reactivity; there was a positive correlation between Rmax and KCl concentration. At 20 °C, 1 hour under hypoxia, the solutions produced similar KCl-induced contractions without endothelial damage. CEL, BHTK and STH-1 decreased vascular reactivity. At 10 °C, STH-1 increased reactivity but CEL and BHTK decreased. After 1 hour under hypoxia in CEL or BHTK solutions, reactivity was similar at different temperatures. At 20 °C, endothelial damage after exposure to STH-1 produced more vasoconstriction than CEL and BHTK. However, at 10 °C, endothelial damage after CEL and BHTK exposure elicited more vasoconstriction while STH-1 showed a small vasoconstrictor response, suggesting endothelial damage. Conclusion: STH-1 decreased reactivity at 20 °C and increased at 10 °C. CEL promoted greater endothelial modulation at 10 °C than at 20 °C, while STH-1 promoted higher modulation at 20 °C than at 10 °C. Vascular tone was reduced by CEL and BHTK exposure, also depending on the KCl concentration. |
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Brazilian Journal of Cardiovascular Surgery (Online) |
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Cardioprotective Solutions Exposure For 1 Hour in Hypoxia and Low Temperatures Affects Vascular Reactivity DifferentlyVasoconstrictionVasoconstrictor AgentsHypoxiaEndotheliumTemperaturePhenylephrineAbstract Introduction: Heart preservation benefits cardiac performance after operations decreasing morbidity but the contribution of the vascular reactivity has been neglected. Objective: We evaluated whether cardioprotective solutions, Krebs-Henseleit (KH), Bretschneider-HTK (BHTK), St. Thomas No. 1 (STH-1), and Celsior (CEL), affect vascular reactivity. Methods: Aortic rings from Wistar rats were used in two protocols. First, the rings were exposed to BHTK, STH-1 or CEL for 1 hour of hypoxia at 37 °C. Second, the rings were exposed to 10 °C or 20 °C for 1 hour under hypoxia. After treatment, the rings were immersed in KH at 37 °C, endothelial integrity was tested and concentration-response curves to phenylephrine were performed. Results: In the first protocol, the solutions did not damage the endothelium; CEL and BHTK reduced KCl-induced contractions but not STH-1; only CEL and BHTK reduced vascular reactivity; there was a positive correlation between Rmax and KCl concentration. At 20 °C, 1 hour under hypoxia, the solutions produced similar KCl-induced contractions without endothelial damage. CEL, BHTK and STH-1 decreased vascular reactivity. At 10 °C, STH-1 increased reactivity but CEL and BHTK decreased. After 1 hour under hypoxia in CEL or BHTK solutions, reactivity was similar at different temperatures. At 20 °C, endothelial damage after exposure to STH-1 produced more vasoconstriction than CEL and BHTK. However, at 10 °C, endothelial damage after CEL and BHTK exposure elicited more vasoconstriction while STH-1 showed a small vasoconstrictor response, suggesting endothelial damage. Conclusion: STH-1 decreased reactivity at 20 °C and increased at 10 °C. CEL promoted greater endothelial modulation at 10 °C than at 20 °C, while STH-1 promoted higher modulation at 20 °C than at 10 °C. Vascular tone was reduced by CEL and BHTK exposure, also depending on the KCl concentration.Sociedade Brasileira de Cirurgia Cardiovascular2021-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-76382021000200201Brazilian Journal of Cardiovascular Surgery v.36 n.2 2021reponame:Brazilian Journal of Cardiovascular Surgery (Online)instname:Sociedade Brasileira de Cirurgia Cardiovascular (SBCCV)instacron:SBCCV10.21470/1678-9741-2020-0320info:eu-repo/semantics/openAccessBatista,Priscila Rossi deVassallo,Dalton ValentimSimões,Maylla RonacherLima,Melchior Luizeng2021-05-05T00:00:00Zoai:scielo:S0102-76382021000200201Revistahttp://www.rbccv.org.br/https://old.scielo.br/oai/scielo-oai.php||rosangela.monteiro@incor.usp.br|| domingo@braile.com.br|| brandau@braile.com.br1678-97410102-7638opendoar:2021-05-05T00:00Brazilian Journal of Cardiovascular Surgery (Online) - Sociedade Brasileira de Cirurgia Cardiovascular (SBCCV)false |
dc.title.none.fl_str_mv |
Cardioprotective Solutions Exposure For 1 Hour in Hypoxia and Low Temperatures Affects Vascular Reactivity Differently |
title |
Cardioprotective Solutions Exposure For 1 Hour in Hypoxia and Low Temperatures Affects Vascular Reactivity Differently |
spellingShingle |
Cardioprotective Solutions Exposure For 1 Hour in Hypoxia and Low Temperatures Affects Vascular Reactivity Differently Batista,Priscila Rossi de Vasoconstriction Vasoconstrictor Agents Hypoxia Endothelium Temperature Phenylephrine |
title_short |
Cardioprotective Solutions Exposure For 1 Hour in Hypoxia and Low Temperatures Affects Vascular Reactivity Differently |
title_full |
Cardioprotective Solutions Exposure For 1 Hour in Hypoxia and Low Temperatures Affects Vascular Reactivity Differently |
title_fullStr |
Cardioprotective Solutions Exposure For 1 Hour in Hypoxia and Low Temperatures Affects Vascular Reactivity Differently |
title_full_unstemmed |
Cardioprotective Solutions Exposure For 1 Hour in Hypoxia and Low Temperatures Affects Vascular Reactivity Differently |
title_sort |
Cardioprotective Solutions Exposure For 1 Hour in Hypoxia and Low Temperatures Affects Vascular Reactivity Differently |
author |
Batista,Priscila Rossi de |
author_facet |
Batista,Priscila Rossi de Vassallo,Dalton Valentim Simões,Maylla Ronacher Lima,Melchior Luiz |
author_role |
author |
author2 |
Vassallo,Dalton Valentim Simões,Maylla Ronacher Lima,Melchior Luiz |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Batista,Priscila Rossi de Vassallo,Dalton Valentim Simões,Maylla Ronacher Lima,Melchior Luiz |
dc.subject.por.fl_str_mv |
Vasoconstriction Vasoconstrictor Agents Hypoxia Endothelium Temperature Phenylephrine |
topic |
Vasoconstriction Vasoconstrictor Agents Hypoxia Endothelium Temperature Phenylephrine |
description |
Abstract Introduction: Heart preservation benefits cardiac performance after operations decreasing morbidity but the contribution of the vascular reactivity has been neglected. Objective: We evaluated whether cardioprotective solutions, Krebs-Henseleit (KH), Bretschneider-HTK (BHTK), St. Thomas No. 1 (STH-1), and Celsior (CEL), affect vascular reactivity. Methods: Aortic rings from Wistar rats were used in two protocols. First, the rings were exposed to BHTK, STH-1 or CEL for 1 hour of hypoxia at 37 °C. Second, the rings were exposed to 10 °C or 20 °C for 1 hour under hypoxia. After treatment, the rings were immersed in KH at 37 °C, endothelial integrity was tested and concentration-response curves to phenylephrine were performed. Results: In the first protocol, the solutions did not damage the endothelium; CEL and BHTK reduced KCl-induced contractions but not STH-1; only CEL and BHTK reduced vascular reactivity; there was a positive correlation between Rmax and KCl concentration. At 20 °C, 1 hour under hypoxia, the solutions produced similar KCl-induced contractions without endothelial damage. CEL, BHTK and STH-1 decreased vascular reactivity. At 10 °C, STH-1 increased reactivity but CEL and BHTK decreased. After 1 hour under hypoxia in CEL or BHTK solutions, reactivity was similar at different temperatures. At 20 °C, endothelial damage after exposure to STH-1 produced more vasoconstriction than CEL and BHTK. However, at 10 °C, endothelial damage after CEL and BHTK exposure elicited more vasoconstriction while STH-1 showed a small vasoconstrictor response, suggesting endothelial damage. Conclusion: STH-1 decreased reactivity at 20 °C and increased at 10 °C. CEL promoted greater endothelial modulation at 10 °C than at 20 °C, while STH-1 promoted higher modulation at 20 °C than at 10 °C. Vascular tone was reduced by CEL and BHTK exposure, also depending on the KCl concentration. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-04-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-76382021000200201 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-76382021000200201 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.21470/1678-9741-2020-0320 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Cirurgia Cardiovascular |
publisher.none.fl_str_mv |
Sociedade Brasileira de Cirurgia Cardiovascular |
dc.source.none.fl_str_mv |
Brazilian Journal of Cardiovascular Surgery v.36 n.2 2021 reponame:Brazilian Journal of Cardiovascular Surgery (Online) instname:Sociedade Brasileira de Cirurgia Cardiovascular (SBCCV) instacron:SBCCV |
instname_str |
Sociedade Brasileira de Cirurgia Cardiovascular (SBCCV) |
instacron_str |
SBCCV |
institution |
SBCCV |
reponame_str |
Brazilian Journal of Cardiovascular Surgery (Online) |
collection |
Brazilian Journal of Cardiovascular Surgery (Online) |
repository.name.fl_str_mv |
Brazilian Journal of Cardiovascular Surgery (Online) - Sociedade Brasileira de Cirurgia Cardiovascular (SBCCV) |
repository.mail.fl_str_mv |
||rosangela.monteiro@incor.usp.br|| domingo@braile.com.br|| brandau@braile.com.br |
_version_ |
1752126602177675264 |