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http://hdl.handle.net/1843/56319| Tipo: | Artigo de Periódico |
| Título: | Dengue virus infection induces inflammation and oxidative stress on the heart |
| Autor(es): | Lucas Miranda Kangussu Milene Alvarenga Rachid Renan Pedra de Souza Carlos Renato Tirapelli Robson Augusto Souza dos Santos Jader dos Santos Cruz Mauro Martins Teixeira Danielle da Glória de Souza Daniella Bonaventura Vivian Vasconcelos Costa Vania Claudia Olivon Celso Martins Queiroz Junior Antônio Nei Santana Gondim Marcos Barrouin Melo Daniela Reis Natália Nóbrega Natália Araújo |
| Resumo: | Objective Dengue fever is one of the most important arboviral diseases in the world, and its severe forms are characterised by a broad spectrum of systemic and cardiovascular hallmarks. However, much remains to be elucidated regarding the pathogenesis triggered by Dengue virus (DENV) in the heart. Herein, we evaluated the cardiac outcomes unleashed by DENV infection and the possible mechanisms associated with these effects. Methods A model of an adapted DENV- 3 strain was used to infect male BALB/c mice to assess haemodynamic measurements and the functional, electrophysiological, inflammatory and oxidative parameters in the heart. Results DENV- 3 infection resulted in increased systemic inflammation and vascular permeability with consequent reduction of systolic blood pressure and increase in heart rate. These changes were accompanied by a decrease in the cardiac output and stroke volume, with a reduction trend in the left ventricular end- systolic and end- diastolic diameters and volumes. Also, there was a reduction trend in the calcium current density in the ventricular cardiomyocytes of DENV- 3 infected mice. Indeed, DENV- 3 infection led to leucocyte infiltration and production of inflammatory mediators in the heart, causing pericarditis and myocarditis. Moreover, increased reactive oxygen species generation and lipoperoxidation were also verified in the cardiac tissue of DENV- 3 infected mice. Conclusions DENV- 3 infection induced a marked cardiac dysfunction, which may be associated with inflammation, oxidative stress and electrophysiological changes in the heart. These findings provide new cardiac insights into the mechanisms involved in the pathogenesis triggered by DENV, contributing to the research of new therapeutic targets for clinical practice. |
| Assunto: | Dengue Doenças cardiacas |
| Idioma: | por |
| País: | Brasil |
| Editor: | Universidade Federal de Minas Gerais |
| Sigla da Instituição: | UFMG |
| Departamento: | ICB - DEPARTAMENTO DE FARMACOLOGIA ICB - DEPARTAMENTO DE FISIOLOGIA E BIOFÍSICA ICB - DEPARTAMENTO DE MICROBIOLOGIA ICB - DEPARTAMENTO DE MORFOLOGIA |
| Tipo de Acesso: | Acesso Restrito |
| Identificador DOI: | http://dx.doi.org/10.1136/heartjnl-2020-318912 |
| URI: | http://hdl.handle.net/1843/56319 |
| Data do documento: | 2021 |
| metadata.dc.url.externa: | https://heart.bmj.com/content/108/5/388 |
| metadata.dc.relation.ispartof: | Heart |
| Aparece nas coleções: | Artigo de Periódico |
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