A plant proteinase inhibitor from Enterolobium contortisiliquum attenuates airway hyperresponsiveness, inflammation and remodeling in a mouse model of asthma

Adriana Palmeira Dias Rodrigues; Anelize Sartori Santos Bortolozzo; Fernanda Magalhães Arantes Costa; Beatriz Mangueira Saraiva Romanholo; Flávia Castro Ribas de Souza; Thayse Regina Brüggemann; Fernanda Paula Roncon Santana; Marlon Vilela de Brito; Camila Ramalho Bonturi; Natalia Neto dos Santos Nunes; Carla Máximo Prado; Edna Aparecida Leick; Maria Luiza Vilela Oliva; Milton Arruda Martins; Renato Fraga Righetti; Iolanda de Fátima Lopes Calvo Tibério

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A plant proteinase inhibitor from Enterolobium contortisiliquum attenuates airway hyperresponsiveness, inflammation and remodeling in a mouse model of asthma

Rodrigues, Adriana Palmeira Dias ^[1] ; Bortolozzo, Anelize Sartori Santos ^[1] ; Arantes-Costa, Fernanda Magalhães ^[1] ; Saraiva-Romanholo, Beatriz Mangueira ^[1] ; Souza, Flávia Castro Ribas de ^[1] ; Brüggemann, Thayse Regina ^[1] ; Santana, Fernanda Paula Roncon ^[1] ; Brito, Marlon Vilela de ^[2] ; Bonturi, Camila Ramalho ^[2] ; Nunes, Natalia Neto dos Santos ^[2] ; Prado, Carla Máximo ^[2] ; Leick, Edna Aparecida ^[1] ; Oliva, Maria Luiza Vilela ^[2] ; Martins, Milton de Arruda ^[1] ; Righetti, Renato Fraga ^[1] ; Tibério, Iolanda de Fátima Lopes Calvo ^[1]
1. [1] Universidade de São Paulo
  
  Universidade de São Paulo
  
  Brasil
2. [2] Universidade Federal de São Paulo
  
  Universidade Federal de São Paulo
  
  Brasil
Localización: Histology and histopathology: cellular and molecular biology, ISSN-e 1699-5848, ISSN 0213-3911, Vol. 34, Nº. 5, 2019, págs. 537-552
Idioma: inglés
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Resumen
- Introduction. Proteinase inhibitors have been associated with anti-inflammatory and antioxidant activities and may represent a potential therapeutic treatment for asthma. Purpose. The aim of the present study was to evaluate the effects of Enterolobium contortisiliquum trypsin inhibitor (EcTI) on pulmonary mechanical function, eosinophilic recruitment, inflammatory cytokines, remodeling and oxidative stress in an experimental model of chronic allergic pulmonary inflammation. Methods. BALB/c mice were divided into 4 groups: C (saline i.p and inhalations with saline), OVA (ovalbumin i.p and inhalations with ovalbumin); C+EC (saline i.p, inhalations with s aline and treatment with EcTI); OVA+EC (ovalbumin i.p, inhalations with ovalbumin and treatment with EcTI). On day 29, we performed the following tests: resistance (Rrs) and elastance (Ers) of the respiratory system; (b) quantify eosinophils, 8-ISO-PGF2α, collagen and elastic fiber volume fractions; (c) IFN-γ, IL-4, IL-5, IL-13, MMP-9, TIMP-1, TGF-β, iNOS and p65-NFκB-positive cells in the airway and alveolar walls. Results. In OVA+EC group, there was an attenuation of the Rrs and Ers, reduction of eosinophils, IL-4, IL-5, IL-13, IFN-γ, iNOS and p65-NF κB-positive cells compared to OVA group.
  
  The 8-ISO-PGF2α, elastic and collagen fibers volume fractions as well as the positive cells for MMP-9, TIMP1 and TGF-β positive cells were decreased in OVA+EC compared to the OVA group. Conclusion. EcTI attenuates bronchial hyperresponsiveness, inflammation, remodeling and oxidative stress activation in this experimental mouse model of asthma.