BEATRIZ MANGUEIRA SARAIVA RAMANHOLO
Projetos de Pesquisa
Unidades Organizacionais
Instituto Central, Hospital das Clínicas, Faculdade de Medicina
LIM/20 - Laboratório de Terapêutica Experimental, Hospital das Clínicas, Faculdade de Medicina
LIM/20 - Laboratório de Terapêutica Experimental, Hospital das Clínicas, Faculdade de Medicina
35 resultados
Resultados de Busca
Agora exibindo 1 - 10 de 35
- Comparison of the Effects of Aerobic Conditioning Before and After Pulmonary Allergic Inflammation(2015) SILVA, Ronaldo Aparecido da; ALMEIDA, Francine Maria; OLIVO, Clarice Rosa; SARAIVA-ROMANHOLO, Beatriz Mangueira; PERINI, Adenir; MARTINS, Milton Arruda; CARVALHO, Celso Ricardo FernandesThe aim of this study is to compare the effects of aerobic conditioning (AC) before (ACBS) and after (ACAS) allergic sensitization. BALB/c mice were divided into two main groups: ACBS and ACAS. Each groups was divided into subgroups: control (nonsensitized/nontrained), AC (nonsensitized/trained), ovalbumin (OVA) (sensitized/nontrained), AC + OVA (trained/sensitized), and OVA + AC (sensitized/trained). Sensitization was induced using OVA and AC performed in treadmill (moderate intensity). We examined IgE and IgG(1) levels, eosinophil counting, expression of Th1 (interleukin (IL)-2, IFN-alpha) and Th2 cytokines (IL-4, IL-5, IL-13), IL-10, vascular endothelial growth factor (VEGF), and airway remodeling. IgE and IgG(1) were decreased only when exercise was performed before sensitization (ACBS); however, there was a decrease of eosinophils, Th2 cytokines, VEGF, and airway remodeling and increase in IL-10 in either ACBS or ACAS groups. Our results demonstrate that aerobic conditioning reduces Th2 response before and after sensitization by increasing IL-10 while the production of anaphylactic antibodies is reduced only when exercise is performed before sensitization.
- Low dose of chlorine exposure exacerbates nasal and pulmonary allergic inflammation in mice (vol 8, 12636, 2018)(2018) GENARO, Isabella Santos de; ALMEIDA, Francine Maria de; HIZUME-KUNZLER, Deborah Camargo; MORIYA, Henrique Takachi; SILVA, Ronaldo Aparecido; CRUZ, Joao Carlos Goncalves; LOPES, Renan Boeira; RIGHETTI, Renato Fraga; VIEIRA, Rodolfo de Paula; SAIKI, Mitiko; MARTINS, Milton Arruda; TIBERIO, Iolanda de Fatima Lopes Calvo; ARANTES-COSTA, Fernanda Magalhaes; SARAIVA-ROMANHOLO, Beatriz Mangueira
conferenceObject Bordetella Pertussis Whole-Cell Vaccine Inhibits Specific IgE, Inflammation and Airway Remodeling in a Murine Model of Asthma(2015) AUN, Marcelo Vivolo; ARANTES-COSTA, Fernanda; SARAIVA-ROMANHOLO, Beatriz Mangueira; ALMEIDA, Francine Maria; REGINA-BRUEGGERMANN, Thayse; MARTINS, Milton Arruda; KALIL, Jorge; GIAVINA-BIANCHI, PedroconferenceObject A compare between two models of cigare tie smoke co-exposition in ovalbumin-sensitized mice(2014) BRUGGEMANN, Thayse Regina; FERNANDES, Paula; OLIVEIRA, Jessica Marques Saez; SARAIVA-ROMANHOLO, Beatriz Mangueira; MARTINS, Milton Arruda; ARANTES-COSTA, Fernanda Magalhaes- Low dose of chlorine exposure exacerbates nasal and pulmonary allergic inflammation in mice(2018) GENARO, Isabella Santos de; ALMEIDA, Francine Maria de; HIZUME-KUNZLER, Deborah Camargo; MORIYA, Henrique Takachi; SILVA, Ronaldo Aparecido; CRUZ, Joao Carlos Goncalves; LOPES, Renan Boeira; RIGHETTI, Renato Fraga; VIEIRA, Rodolfo de Paula; SAIKI, Mitiko; MARTINS, Milton Arruda; TIBERIO, Iolanda de Fatima Lopes Calvo; ARANTES-COSTA, Fernanda Magalhaes; SARAIVA-ROMANHOLO, Beatriz MangueiraWork-exacerbated asthma (WEA) is defined as preexisting asthma that worsens with exposure to irritants [e.g., chlorine (Cl-2) derivatives] in the workplace. The maximum allowable concentration in the workplace of Cl-2 exposure is 3 mg/m(3) (described in OSHA). We investigated in an experimental asthma model in mice the effects of a single exposure to a sodium hypochlorite dose with this allowed chlorine concentration and a tenfold higher dose. Acute chlorine exposure at 3.3 mg/m(3) in the OVA-sensitized group increased eosinophils in the peribronquial infiltrate, cytokine production, nasal mucus production and the number of iNOS positive cells in the distal lung compared to only sensitized mice. The exposure to a higher dose of 33.3 mg/m(3) in the OVA-sensitized group resulted in an increase in respiratory system elastance, in the total and differential numbers of inflammatory cells in bronchoalveolar lavage fluid, IL-4, IL-5, and IL-17 in the lungs, eosinophils in peribronquial infiltrate and mucus content in nasal compared to non-exposed and sensitized animals. In this asthma model, chorine exposures at an allowable dose, contributed to the potentiation of Th2 responses. The functional alterations were associated with increased iNOS and ROCK-2 activation in the distal lung.
- Occupational asthma and allergic asthma: differences in the physical activity level, clinical control, and airway inflammation(2023) SILVA, Ronaldo Aparecido Da; FREITAS, Lucas Rodrigues Silva; ALMEIDA, Francine Maria De; GALVAO, Clovis Eduardo Santos; NOGUEIRA, Soraia Felix; BEZERRA, Suellen Karoline Moreira; CARVALHO, Celso Ricardo Fernades De; ARAUJO, Kaique Alves De; CRUZ, Fabiola Matos Da; AGONDI, Rosana Camara; MARTINS, Milton Arruda; TIBERIO, Iolanda De Fatima Lopes Calvo; SARAIVA-ROMANHOLO, Beatriz Mangueira
- Investigating the Effects of a New Peptide, Derived from the Enterolobium contortisiliquum Proteinase Inhibitor (EcTI), on Inflammation, Remodeling, and Oxidative Stress in an Experimental Mouse Model of Asthma-Chronic Obstructive Pulmonary Disease Overlap (ACO)(2023) BARBOSA, Jessica Anastacia Silva; SILVA, Luana Laura Sales da; JOAO, Juliana Morelli Lopes Goncalves; CAMPOS, Elaine Cristina de; FUKUZAKI, Silvia; CAMARGO, Leandro do Nascimento; SANTOS, Tabata Maruyama dos; SANTOS, Henrique Tibucheski dos; BEZERRA, Suellen Karoline Moreira; SARAIVA-ROMANHOLO, Beatriz Mangueira; LOPES, Fernanda Degobbi Tenorio Quirino dos Santos; BONTURI, Camila Ramalho; OLIVA, Maria Luiza Vilela; LEICK, Edna Aparecida; RIGHETTI, Renato Fraga; TIBERIO, Iolanda de Fatima Lopes CalvoThe synthesized peptide derived from Enterolobium contortisiliquum (pep3-EcTI) has been associated with potent anti-inflammatory and antioxidant effects, and it may be a potential new treatment for asthma-COPD overlap-ACO). Purpose: To investigate the primary sequence effects of pep3-EcTI in an experimental ACO. BALB/c mice were divided into eight groups: SAL (saline), OVA (ovalbumin), ELA (elastase), ACO (ovalbumin + elastase), ACO-pep3-EcTI (treated with inhibitor), ACO-DX (treated with dexamethasone), ACO-DX-pep3-EcTI (treated with dexamethasone and inhibitor), and SAL-pep3-EcTI (saline group treated with inhibitor). We evaluated the hyperresponsiveness to methacholine, exhaled nitric oxide, bronchoalveolar lavage fluid (BALF), mean linear intercept (Lm), inflammatory markers, tumor necrosis factor (TNF-alpha), interferon (IFN)), matrix metalloproteinases (MMPs), growth factor (TGF-beta), collagen fibers, the oxidative stress marker inducible nitric oxide synthase (iNOS), transcription factors, and the signaling pathway NF-kappa B in the airways (AW) and alveolar septa (AS). Statistical analysis was conducted using one-way ANOVA and t-tests, significant when p < 0.05. ACO caused alterations in the airways and alveolar septa. Compared with SAL, ACO-pep3-EcTI reversed the changes in the percentage of resistance of the respiratory system (%Rrs), the elastance of the respiratory system (%Ers), tissue resistance (%Gtis), tissue elastance (%Htis), airway resistance (%Raw), Lm, exhaled nitric oxide (ENO), lymphocytes, IL-4, IL-5, IL-6, IL-10, IL-13, IL-17, TNF-alpha, INF-gamma, MMP-12, transforming growth factor (TGF)-beta, collagen fibers, and iNOS. ACO-DX reversed the changes in %Rrs, %Ers, %Gtis, %Htis, %Raw, total cells, eosinophils, neutrophils, lymphocytes, macrophages, IL-1 beta, IL-6, IL-10, IL-13, IL-17, TNF-alpha, INF-gamma, MMP-12, TGF-beta, collagen fibers, and iNOS. ACO-DX-pep3-EcTI reversed the changes, as was also observed for the pep3-EcTI and the ACO-DX-pep3-EcTI. Significance: The pep3-EcTI was revealed to be a promising strategy for the treatment of ACO, asthma, and COPD.
- Effects of Anti-IL-17 on Inflammation, Remodeling, and Oxidative Stress in an Experimental Model of Asthma Exacerbated by LPS(2018) CAMARGO, Leandro do Nascimento; RIGHETTI, Renato Fraga; ARISTOTELES, Luciana Ritha de Cassia Rolim Barbosa; SANTOS, Tabata Maruyama dos; SOUZA, Flavia Castro Ribas de; FUKUZAKI, Silvia; CRUZ, Maysa Mariana; ALONSO-VALE, Maria Isabel Cardoso; SARAIVA-ROMANHOLO, Beatriz Mangueira; PRADO, Carla Maximo; MARTINS, Milton de Arruda; LEICK, Aparecida; TIBERIO, Iolanda de Fatima Lopes CalvoInflammation plays a central role in the development of asthma, which is considered an allergic disease with a classic Th2 inflammatory profile. However, cytokine IL-17 has been examined to better understand the pathophysiology of this disease. Severe asthmatic patients experience frequent exacerbations, leading to infection, and subsequently show altered levels of inflammation that are unlikely to be due to the Th2 immune response alone. This study estimates the effects of anti-IL-17 therapy in the pulmonary parenchyma in a murine asthma model exacerbated by LPS. BALB/c mice were sensitized with intraperitoneal ovalbumin and repeatedly exposed to inhalation with ovalbumin, followed by treatment with or without anti-IL-17. Twenty-four hours prior to the end of the 29-day experimental protocol, the two groups received LPS (0.1 mg/ml intratracheal OVA-LPS and OVA-LPS IL-17). We subsequently evaluated bronchoalveolar lavage fluid, performed a lung tissue morphometric analysis, and measured IL-6 gene expression. OVA-LPS-treated animals treated with anti-IL-17 showed decreased pulmonary inflammation, edema, oxidative stress, and extracellular matrix remodeling compared to the non-treated OVA and OVA-LPS groups (p < 0.05). The anti-IL-17 treatment also decreased the numbers of dendritic cells, FOXP3, NF-kappa B, and Rho kinase 1-and 2-positive cells compared to the non-treated OVA and OVA-LPS groups (p < 0.05). In conclusion, these data suggest that inhibition of IL-17 is a promising therapeutic avenue, even in exacerbated asthmatic patients, and significantly contributes to the control of Th1/Th2/Th17 inflammation, chemokine expression, extracellular matrix remodeling, and oxidative stress in a murine experimental asthma model exacerbated by LPS.
- Inflammatory and functional responses after (bio)diesel exhaust exposure in allergic sensitized mice. A comparison between diesel and biodiesel(2019) TIMMERMAN, Tirza; BRITO, Jose Mara de; ALMEIDA, Natalia Madureira de; ALMEIDA, Francine Maria de; ARANTES-COSTA, Fernanda Magalhaes; GUIMARAES, Eliane Tigre; LICHTENFELS, Ana Julia Faria Coimbra; RIVERO, Dolores Helena Rodriguez Ferreira; OLIVEIRA, Regiani Carvalho de; LACERDA, Joao Paulo Amorim de; MORAES, Jamille Moreira; PIMENTAL, Danilo Augusto; SARAIVA-ROMANHOLO, Beatriz Mangueira; SALDIVA, Paulo Hilario Nascimento; VIEIRA, Rodolfo de Paula; MAUAD, ThaisMany cities fail to meet air quality standards, which results in increased risk for pulmonary disorders, including asthma. Human and experimental studies have shown that diesel exhaust (DE) particles are associated with worsening of allergic asthma. Biodiesel (BD), a cleaner fuel from renewable sources, was introduced in the eighties. Because of the reduction in particulate matter (PM) emissions, BD was expected to cause fewer adverse pulmonary effects. However, only limited data on the effect of BD emissions in asthma are available. Objective: Determine whether BD exhaust exposure in allergic sensitized mice leads to different effects on inflammatory and functional responses compared to DE exposure. Methods: Balb/C mice were orotracheally sensitized with House Dust Mite (HDM) or a saline solution with 3 weekly instillations. From day 9 until day 17 after sensitization, they were exposed daily to filtered air (FA), DE and BD exhaust (concentration: 600 mu g/m(3) PM2.5). Lung function, bronchoalveolar lavage fluid (BALF) cell counts, cytokine levels (IL-2, IL-4, IL-5, IL-17, TNF-alpha, TSLP) in the BALF, peribronchiolar eosinophils and parenchymal macrophages were measured. Results: HDM-sensitized animals presented increased lung elastance (p = 0.046), IgG1 serum levels (p = 0.029), peribronchiolar eosinophils (p = 0.028), BALF levels of total cells (p = 0.020), eosinophils (p = 0.028), IL-5 levels (p = 0.002) and TSLP levels (p = 0.046) in BALF. DE exposure alone increased lung elastance (p = 0.000) and BALF IL-4 levels (p = 0.045), whereas BD exposure alone increased BALF TSLP levels (p = 0.004). BD exposure did not influence any parameters after HDM challenge, while DE exposed animals presented increased BALF levels of total cells (p = 0.019), lymphocytes (p = 0.000), neutrophils (p = 0.040), macrophages (p = 0.034), BALF IL-4 levels (p = 0.028), and macrophagic inflammation in the lung tissue (p = 0.037), as well as decreased IgG1 (p = 0.046) and lgG2 (p = 0.043) levels when compared to the HDM group. Conclusion: The results indicate more adverse pulmonary effects of DE compared to BD exposure in allergic sensitized animals.
- Effects of a Peptide Derived from the Primary Sequence of a Kallikrein Inhibitor Isolated from Bauhinia bauhinioides (pep-BbKI) in an Asthma-COPD Overlap (ACO) Model(2023) SILVA, Luana Laura Sales da; BARBOSA, Jessica Anastacia Silva; JOAO, Juliana Morelli Lopes Goncalves; FUKUZAKI, Silvia; CAMARGO, Leandro do Nascimento; SANTOS, Tabata Maruyama dos; CAMPOS, Elaine Cristina de; COSTA, Arthur Silva; SARAIVA-ROMANHOLO, Beatriz Mangueira; BEZERRA, Suellen Karoline Moreira; LOPES, Fernanda Tenorio Quirino dos Santos; BONTURI, Camila Ramalho; OLIVA, Maria Luiza Vilela; LEICK, Edna Aparecida; RIGHETTI, Renato Fraga; TIBERIO, Iolanda de Fatima Lopes Calvo(1) There are several patients with asthma-COPD overlap (ACO). A peptide derived from the primary sequence of a kallikrein inhibitor isolated from Bauhinia bauhinioides (pep-BbKI) has potent anti-inflammatory and antioxidant effects. Purpose: To investigate the effects of pep-BbKI treatment in an ACO model and compare them with those of corticosteroids. (2) BALB/c mice were divided into groups: SAL (saline), OVA (ovalbumin), ELA (elastase), ACO (ovalbumin + elastase), ACO-pep-BbKI (treated with inhibitor), ACO-DX (dexamethasone treatment), ACO-DX-pep-BbKI (both treatments), and SAL-pep-BbKI (saline group treated with inhibitor). We evaluated: hyperresponsiveness to methacholine, bronchoalveolar lavage fluid (BALF), exhaled nitric oxide (eNO), IL-1 & beta;, IL-4, IL-5, IL-6, IL-10, IL-13, IL-17, IFN-& gamma;, TNF-& alpha;, MMP-9, MMP-12, TGF-& beta;, collagen fibers, iNOS, eNO, linear mean intercept (Lm), and NF-& kappa;B in airways (AW) and alveolar septa (AS). (3) ACO-pep-BbKI reversed ACO alterations and was similar to SAL in all mechanical parameters, Lm, neutrophils, IL-5, IL-10, IL-17, IFN-& gamma;, TNF-& alpha;, MMP-12 (AW), collagen fibers, iNOS (AW), and eNO (p > 0.05). ACO-DX reversed ACO alterations and was similar to SAL in all mechanical parameters, Lm, total cells and differentials, IL-1 & beta;(AS), IL-5 (AS), IL-6 (AS), IL-10 (AS), IL-13 (AS), IFN-& gamma;, MMP-12 (AS), TGF-& beta; (AS), collagen fibers (AW), iNOS, and eNO (p > 0.05). SAL was similar to SAL-pep-BbKI for all comparisons (p > 0.05). (4) Pep-BbKI was similar to dexamethasone in reducing the majority of alterations of this ACO model.