Hypercapnia attenuates ventilator-induced lung injury through vagus nerve activation
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Acta Cirúrgica Brasileira (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-86502019000900210 |
Resumo: | Abstract Purpose: To investigate the role of vagus nerve activation in the protective effects of hypercapnia in ventilator-induced lung injury (VILI) rats. Methods: Male Sprague-Dawley rats were randomized to either high-tidal volume or low-tidal volume ventilation (control) and monitored for 4h. The high-tidal volume group was further divided into either a vagotomy or sham-operated group and each surgery group was further divided into two subgroups: normocapnia and hypercapnia. Injuries were assessed hourly through hemodynamics, respiratory mechanics and gas exchange. Protein concentration, cell count and cytokines (TNF-α and IL-8) in bronchoalveolar lavage fluid (BALF), lung wet-to-dry weight and pathological changes were examined. Vagus nerve activity was recorded for 1h. Results: Compared to the control group, injurious ventilation resulted in a decrease in PaO2/FiO2 and greater lung static compliance, MPO activity, enhanced BALF cytokines, protein concentration, cell count, and histology injury score. Conversely, hypercapnia significantly improved VILI by decreasing the above injury parameters. However, vagotomy abolished the protective effect of hypercapnia on VILI. In addition, hypercapnia enhanced efferent vagus nerve activity compared to normocapnia. Conclusion: These results indicate that the vagus nerve plays an important role in mediating the anti-inflammatory effect of hypercapnia on VILI. |
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Hypercapnia attenuates ventilator-induced lung injury through vagus nerve activationHypercapniaVentilator-Induced Lung InjuryVagus NerveRatsAbstract Purpose: To investigate the role of vagus nerve activation in the protective effects of hypercapnia in ventilator-induced lung injury (VILI) rats. Methods: Male Sprague-Dawley rats were randomized to either high-tidal volume or low-tidal volume ventilation (control) and monitored for 4h. The high-tidal volume group was further divided into either a vagotomy or sham-operated group and each surgery group was further divided into two subgroups: normocapnia and hypercapnia. Injuries were assessed hourly through hemodynamics, respiratory mechanics and gas exchange. Protein concentration, cell count and cytokines (TNF-α and IL-8) in bronchoalveolar lavage fluid (BALF), lung wet-to-dry weight and pathological changes were examined. Vagus nerve activity was recorded for 1h. Results: Compared to the control group, injurious ventilation resulted in a decrease in PaO2/FiO2 and greater lung static compliance, MPO activity, enhanced BALF cytokines, protein concentration, cell count, and histology injury score. Conversely, hypercapnia significantly improved VILI by decreasing the above injury parameters. However, vagotomy abolished the protective effect of hypercapnia on VILI. In addition, hypercapnia enhanced efferent vagus nerve activity compared to normocapnia. Conclusion: These results indicate that the vagus nerve plays an important role in mediating the anti-inflammatory effect of hypercapnia on VILI.Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia2019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-86502019000900210Acta Cirúrgica Brasileira v.34 n.9 2019reponame:Acta Cirúrgica Brasileira (Online)instname:Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia (SBDPC)instacron:SBDPC10.1590/s0102-865020190090000002info:eu-repo/semantics/openAccessXia,WenfangLi,GuangPan,ZhouZhou,Qingshaneng2019-11-22T00:00:00Zoai:scielo:S0102-86502019000900210Revistahttps://www.bvs-vet.org.br/vetindex/periodicos/acta-cirurgica-brasileira/https://old.scielo.br/oai/scielo-oai.php||sgolden@terra.com.br0102-86501678-2674opendoar:2019-11-22T00:00Acta Cirúrgica Brasileira (Online) - Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia (SBDPC)false |
dc.title.none.fl_str_mv |
Hypercapnia attenuates ventilator-induced lung injury through vagus nerve activation |
title |
Hypercapnia attenuates ventilator-induced lung injury through vagus nerve activation |
spellingShingle |
Hypercapnia attenuates ventilator-induced lung injury through vagus nerve activation Xia,Wenfang Hypercapnia Ventilator-Induced Lung Injury Vagus Nerve Rats |
title_short |
Hypercapnia attenuates ventilator-induced lung injury through vagus nerve activation |
title_full |
Hypercapnia attenuates ventilator-induced lung injury through vagus nerve activation |
title_fullStr |
Hypercapnia attenuates ventilator-induced lung injury through vagus nerve activation |
title_full_unstemmed |
Hypercapnia attenuates ventilator-induced lung injury through vagus nerve activation |
title_sort |
Hypercapnia attenuates ventilator-induced lung injury through vagus nerve activation |
author |
Xia,Wenfang |
author_facet |
Xia,Wenfang Li,Guang Pan,Zhou Zhou,Qingshan |
author_role |
author |
author2 |
Li,Guang Pan,Zhou Zhou,Qingshan |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Xia,Wenfang Li,Guang Pan,Zhou Zhou,Qingshan |
dc.subject.por.fl_str_mv |
Hypercapnia Ventilator-Induced Lung Injury Vagus Nerve Rats |
topic |
Hypercapnia Ventilator-Induced Lung Injury Vagus Nerve Rats |
description |
Abstract Purpose: To investigate the role of vagus nerve activation in the protective effects of hypercapnia in ventilator-induced lung injury (VILI) rats. Methods: Male Sprague-Dawley rats were randomized to either high-tidal volume or low-tidal volume ventilation (control) and monitored for 4h. The high-tidal volume group was further divided into either a vagotomy or sham-operated group and each surgery group was further divided into two subgroups: normocapnia and hypercapnia. Injuries were assessed hourly through hemodynamics, respiratory mechanics and gas exchange. Protein concentration, cell count and cytokines (TNF-α and IL-8) in bronchoalveolar lavage fluid (BALF), lung wet-to-dry weight and pathological changes were examined. Vagus nerve activity was recorded for 1h. Results: Compared to the control group, injurious ventilation resulted in a decrease in PaO2/FiO2 and greater lung static compliance, MPO activity, enhanced BALF cytokines, protein concentration, cell count, and histology injury score. Conversely, hypercapnia significantly improved VILI by decreasing the above injury parameters. However, vagotomy abolished the protective effect of hypercapnia on VILI. In addition, hypercapnia enhanced efferent vagus nerve activity compared to normocapnia. Conclusion: These results indicate that the vagus nerve plays an important role in mediating the anti-inflammatory effect of hypercapnia on VILI. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 |
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=S0102-86502019000900210 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-86502019000900210 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/s0102-865020190090000002 |
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 para o Desenvolvimento da Pesquisa em Cirurgia |
publisher.none.fl_str_mv |
Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia |
dc.source.none.fl_str_mv |
Acta Cirúrgica Brasileira v.34 n.9 2019 reponame:Acta Cirúrgica Brasileira (Online) instname:Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia (SBDPC) instacron:SBDPC |
instname_str |
Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia (SBDPC) |
instacron_str |
SBDPC |
institution |
SBDPC |
reponame_str |
Acta Cirúrgica Brasileira (Online) |
collection |
Acta Cirúrgica Brasileira (Online) |
repository.name.fl_str_mv |
Acta Cirúrgica Brasileira (Online) - Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia (SBDPC) |
repository.mail.fl_str_mv |
||sgolden@terra.com.br |
_version_ |
1752126445430243328 |