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Doctoral Thesis
DOI
https://doi.org/10.11606/T.42.2013.tde-11062014-143338
Document
Author
Full name
Isabelli de Oliveira Martins
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2013
Supervisor
Committee
Lima, Wothan Tavares de (President)
Martins, Joilson de Oliveira
Munhoz, Carolina Demarchi
Prado, Carla Máximo
Rossoni, Luciana Venturini
Title in Portuguese
Influência dos hormônios sexuais femininos no remodelamento e na reatividade das vias aéreas em modelo murino de inflamação pulmonar alérgica crônica.
Keywords in Portuguese
Asma (experimentação)
Camundongos
Estrógenos
Hormônios sexuais femininos
Metaloproteinases
Abstract in Portuguese
A asma traz remodelamento das vias aéreas por deposição de colágeno, hiperplasia mucoide, hipertrofia celular lisa e hipertrofia epitelial além de afetar a reatividade das vias aéreas. Camundongos C57Bl/6 ovariectomizadas (OVx) foram sensibilizadas e desafiadas com OVA por inalação 3 vezes por semana durante 3 ou 7 semanas. Passadas 120h pós desafio avaliou-se: reatividade traqueal, histologia, MMPs 2 e 9 e mecânica pulmonar. O grupo OVx alérgico teve a reatividade traqueal à MCh e a quantificação de muco, colágeno e músculo liso reduzida em comparação ao grupo controle (sham OVx). O tratamento com estrógeno aumentou MMP2 e o tratamento com progesterona aumentou MMP9. A mecânica ventilatória não diferiu entre os grupos. Nossos dados sugerem que o remodelamento brônquico pode ser modulado por HSFs.
Title in English
Influence of female sex hormones on airway remodeling and responsiveness in a murine model of lung inflammation.
Keywords in English
Asthma (experimentation)
Estrogens
Female sex hormones
Metalloproteinases
Mice
Abstract in English
Asthma is characterized by remodeling and increased airway responsiveness. Remodeling is recognized by sub-epithelial fibrosis, bronchial glands hypertrophy and goblet cell hyperplasia. We investigated role of HSF in airway remodeling and in tracheal responsiveness in a model of chronic lung inflammation. Mice were ovariectomized (OVx), sensitized and OVA challenged. Elapsed 120h of the last challenge, histological assessment and contractile response of trachea to methacholine (MCh) was performed. Total lung resistance (R) and elastance (E) were measured under mechanical ventilation. Control group consisted of Sham OVx allergic mice. Airway remodeling were significantly lower of OVx mice compared with Sham OVx allergic counterparts. OVx allergic mice showed lower tracheal responsiveness than Sham OVx. R and E were the same between groups.
 
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Publishing Date
2014-06-17
 
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