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Rossi RC, Annoni R, Ferreira DS, da Silva LFF, Mauad T. Correction to: Structural alterations and markers of endothelial activation in pulmonary and bronchial arteries in fatal asthma. Allergy Asthma Clin Immunol 2020; 16:91. [PMID: 33101425 PMCID: PMC7579919 DOI: 10.1186/s13223-020-00490-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Affiliation(s)
- Renata Calciolari Rossi
- Department of Pathology, Universidade de São Paulo-School of Medicine, Avenida Dr. Arnaldo, 455, São Paulo, SP CEP 01246-903 Brazil.,Department of Pathology, Universidade Do Oeste Paulista, Presidente Prudente, São Paulo Brazil
| | - Raquel Annoni
- Department of Pathology, Universidade de São Paulo-School of Medicine, Avenida Dr. Arnaldo, 455, São Paulo, SP CEP 01246-903 Brazil.,Department of Physiotherapy, Universidade Federal Do Triângulo Mineiro, Uberaba, Minas Gerais Brazil
| | - Diogenes Seraphim Ferreira
- Department of Pathology, Universidade de São Paulo-School of Medicine, Avenida Dr. Arnaldo, 455, São Paulo, SP CEP 01246-903 Brazil.,Allergy and Immunology, Hospital das Clínicas, Federal University of Paraná, Curitiba, Brazil
| | - Luiz Fernando Ferraz da Silva
- Department of Pathology, Universidade de São Paulo-School of Medicine, Avenida Dr. Arnaldo, 455, São Paulo, SP CEP 01246-903 Brazil
| | - Thais Mauad
- Department of Pathology, Universidade de São Paulo-School of Medicine, Avenida Dr. Arnaldo, 455, São Paulo, SP CEP 01246-903 Brazil
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Marcon A, Marchetti P, Antó JM, Cazzoletti L, Cerveri I, Corsico A, Ferreira DS, Garcia-Aymerich J, Gislason D, Heinrich J, Jõgi R, Johannessen A, Leynaert B, Malinovschi A, Pin I, Probst-Hensch N, Weyler J, Janson C, Jarvis D, Accordini S. Atopy Modifies the Association Between Inhaled Corticosteroid Use and Lung Function Decline in Patients with Asthma. J Allergy Clin Immunol Pract 2019; 8:980-988.e10. [PMID: 31704441 DOI: 10.1016/j.jaip.2019.10.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 10/15/2019] [Accepted: 10/15/2019] [Indexed: 01/05/2023]
Abstract
BACKGROUND Inhaled corticosteroids (ICSs) are the mainstay of asthma treatment, but response to medication is variable. Patients with allergic inflammation generally show a better short-term response to ICSs; however, studies on predictors of long-term response are few. OBJECTIVE To assess whether allergic sensitization can modify the association between ICS use and lung function decline over 20 years in adult asthma. METHODS We used data from the 3 clinical examinations of the European Community Respiratory Health Survey. We measured ICS use (no use, and use for <1.3, 1.3-8, and >8 years) and FEV1 decline among subjects with asthma over the 2 periods between consecutive examinations. We conducted a cohort study combining data of the 2 periods (906 observations from 745 subjects) to assess whether the association between ICS use and FEV1 decline was modified by allergic sensitization (IgE > 0.35 kU/L for any of house-dust mite, timothy grass, cat, or Cladosporium). RESULTS FEV1 decline was similar for non-ICS users, as well as ICS users for less than 1.3 years, with and without allergic sensitization. However, among subjects on ICSs for a longer period, sensitization was associated with an attenuated decline (Pinteraction = .006): in the group treated for more than 8 years, FEV1 decline was on average 27 mL/y (95% CIBonferroni-adjusted, 11-42) lower for subjects with sensitization compared with nonsensitized subjects. CONCLUSIONS Our study suggests that biomarkers of atopy can predict a more favorable long-term response to ICSs. Randomized controlled studies are needed to confirm these findings.
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Affiliation(s)
- Alessandro Marcon
- Unit of Epidemiology and Medical Statistics, Department of Diagnostics and Public Health, University of Verona, Verona, Italy.
| | - Pierpaolo Marchetti
- Unit of Epidemiology and Medical Statistics, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Josep M Antó
- Institute for Global Health (ISGlobal), Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | - Lucia Cazzoletti
- Unit of Epidemiology and Medical Statistics, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Isa Cerveri
- Division of Respiratory Diseases, IRCCS Policlinico San Matteo Foundation, Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy
| | - Angelo Corsico
- Division of Respiratory Diseases, IRCCS Policlinico San Matteo Foundation, Department of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy
| | - Diogenes Seraphim Ferreira
- School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia; Alergia e Imunologia, Complexo Hospital de Clinicas, Universidade Federal do Parana, Curitiba, Brazil
| | - Judith Garcia-Aymerich
- Institute for Global Health (ISGlobal), Barcelona, Spain; Universitat Pompeu Fabra (UPF), Barcelona, Spain; CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | - David Gislason
- Department of Allergy, Respiratory Medicine and Sleep, Landspitali University Hospital, Reykjavik, Iceland
| | - Joachim Heinrich
- Institute and Outpatient Clinic for Occupational, Social and Environmental Medicine, University Hospital of Ludwig, Maximilians University, Munich, Germany; Comprehensive Pneumology Centre Munich, German Centre for Lung Research, Munich, Germany
| | - Rain Jõgi
- Department of Pneumology, University of Tartu, Tartu, Estonia
| | - Ane Johannessen
- Centre for International Health, Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
| | - Bénédicte Leynaert
- Inserm-U1168, VIMA (Aging and Chronic Diseases. Epidemiological and Public Health Approaches), Villejuif, France; UMR-S 1168, UVSQ, Univ Versailles St-Quentin-en-Yvelines, St-Quentin-en-Yvelines, France
| | - Andrei Malinovschi
- Department of Medical Sciences: Clinical Physiology, Uppsala University, Uppsala, Sweden
| | - Isabelle Pin
- Pediatrics, Centre Hospitalier Universitaire Grenoble Alpes, Grenoble, France; INSERM, Institut for Advanced Biosciences, Grenoble, France; Université Grenoble Alpes, Grenoble, France
| | - Nicole Probst-Hensch
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel, Switzerland; University of Basel, Basel, Switzerland
| | - Joost Weyler
- Epidemiology and Social Medicine, StatUA Statistics Center, University of Antwerp, Antwerp, Belgium
| | - Christer Janson
- Department of Medical Sciences: Respiratory, Allergy and Sleep research, Uppsala University, Uppsala, Sweden
| | - Deborah Jarvis
- National Heart and Lung Institute, Imperial College London, London, United Kingdom; MRC-PHE Centre for Environment and Health, Imperial College London, London, United Kingdom
| | - Simone Accordini
- Unit of Epidemiology and Medical Statistics, Department of Diagnostics and Public Health, University of Verona, Verona, Italy
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Cannelli O, Bacellar C, Ingle RA, Bohinc R, Kinschel D, Bauer B, Ferreira DS, Grolimund D, Mancini GF, Chergui M. Toward time-resolved laser T-jump/X-ray probe spectroscopy in aqueous solutions. Struct Dyn 2019; 6:064303. [PMID: 31832487 PMCID: PMC6906120 DOI: 10.1063/1.5129626] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 11/13/2019] [Indexed: 06/10/2023]
Abstract
Most chemical and biochemical reactions in nature and in industrial processes are driven by thermal effects that bring the reactants above the energy barrier for reaction. In aqueous solutions, this process can also be triggered by the laser driven temperature jump (T-jump) method, in which the water vibrational (stretch, bend, or combination) modes are excited by a short laser pulse, leading to a temperature increase in the irradiated volume within a few picoseconds. The combination of the laser T-jump with X-ray spectroscopic probes would add element-specificity as well as sensitivity to the structure, the oxidation state, and the spin state of the intermediates of reactions. Here, we present preliminary results of a near infrared pump/X-ray absorption spectroscopy probe to study the ligand exchange of an octahedral aqueous Cobalt complex, which is known to pass through intermediate steps yielding tetrahedral chlorinated as final species. The structural changes of the chemical reaction are monitored with great sensitivity, even in the presence of a mild local increase in temperature. This work opens perspectives for the study of non-light-driven reactions using time-resolved X-ray spectroscopic methods.
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Affiliation(s)
- O Cannelli
- Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - C Bacellar
- Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - R A Ingle
- Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - R Bohinc
- Laboratory of Femtochemistry-MicroXAS, Paul Scherrer Institut, 5232 PSI Villigen, Switzerland
| | - D Kinschel
- Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - B Bauer
- Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - D S Ferreira
- Laboratory of Femtochemistry-MicroXAS, Paul Scherrer Institut, 5232 PSI Villigen, Switzerland
| | - D Grolimund
- Laboratory of Femtochemistry-MicroXAS, Paul Scherrer Institut, 5232 PSI Villigen, Switzerland
| | - G F Mancini
- Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
| | - M Chergui
- Laboratory of Ultrafast Spectroscopy, Lausanne Center for Ultrafast Science (LACUS), École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
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Janson C, Accordini S, Cazzoletti L, Cerveri I, Chanoine S, Corsico A, Ferreira DS, Garcia-Aymerich J, Gislason D, Nielsen R, Johannessen A, Jogi R, Malinovschi A, Martinez-Moratalla Rovira J, Marcon A, Pin I, Quint J, Siroux V, Almar E, Bellisario V, Franklin KA, Gullón JA, Holm M, Heinrich J, Nowak D, Sánchez-Ramos JL, Weyler JJ, Jarvis D. Pharmacological treatment of asthma in a cohort of adults during a 20-year period: results from the European Community Respiratory Health Survey I, II and III. ERJ Open Res 2019; 5:00073-2018. [PMID: 30723731 PMCID: PMC6355980 DOI: 10.1183/23120541.00073-2018] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 11/28/2018] [Indexed: 11/17/2022] Open
Abstract
Asthma often remains uncontrolled, despite the fact that the pharmacological treatment has undergone large changes. We studied changes in the treatment of asthma over a 20-year period and identified factors associated with the regular use of inhaled corticosteroid (ICS) treatment. Changes in the use of medication were determined in 4617 randomly selected subjects, while changes in adults with persistent asthma were analysed in 369 participants. The study compares data from three surveys in 24 centres in 11 countries. The use of ICSs increased from 1.7% to 5.9% in the general population and the regular use of ICSs increased from 19% to 34% among persistent asthmatic subjects. The proportion of asthmatic subjects reporting asthma attacks in the last 12 months decreased, while the proportion that had seen a doctor in the last 12 months remained unchanged (42%). Subjects with asthma who had experienced attacks or had seen a doctor were more likely to use ICSs on a regular basis. Although ICS use has increased, only one-third of subjects with persistent asthma take ICSs on a regular basis. Less than half had seen a doctor during the last year. This indicates that underuse of ICSs and lack of regular healthcare contacts remains a problem in the management of asthma. Despite increased ICS use, only 34% of subjects with persistent asthma take ICSs on a regular basis; <50% have seen a doctor in the last year. Underuse of ICSs and lack of regular healthcare contacts remains a problem in asthma.http://ow.ly/GUZ630mZkVN
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Affiliation(s)
- Christer Janson
- Respiratory, Allergy and Sleep Research, Dept of Medical Sciences, Uppsala University, Uppsala, Sweden.,Population Health and Occupational Disease, National Heart and Lung Institute, Imperial College London, London, UK
| | - Simone Accordini
- Unit of Epidemiology and Medical Statistics, Dept of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Lucia Cazzoletti
- Unit of Epidemiology and Medical Statistics, Dept of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Isa Cerveri
- Division of Respiratory Diseases, IRCCS, Policlinico San Matteo Foundation, Dept of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy
| | - Sebastien Chanoine
- Team of Environmental Epidemiology Applied to Reproduction and Respiratory Health, Institute for Advanced Biosciences, Inserm, Université Grenoble Alpes, Grenoble, France.,Pôle Pharmacie, CHU Grenoble Alpes, Grenoble, France
| | - Angelo Corsico
- Division of Respiratory Diseases, IRCCS, Policlinico San Matteo Foundation, Dept of Internal Medicine and Therapeutics, University of Pavia, Pavia, Italy
| | - Diogenes Seraphim Ferreira
- School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia.,Alergia e Imunologia, Complexo Hospital de Clinicas, Universidade Federal do Parana, Curitiba, Brazil
| | - Judith Garcia-Aymerich
- ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | - David Gislason
- Dept of Respiratory Medicine and Sleep, Landspitali, Reykjavik, Iceland
| | - Rune Nielsen
- Dept of Thoracic Medicine, Haukeland University Hospital, Bergen, Norway.,Dept of Clinical Science, University of Bergen, Bergen, Norway
| | - Ane Johannessen
- Centre for International Health, Dept of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
| | - Rain Jogi
- Lung Clinic, Tartu University Hospital, Tartu, Estonia
| | - Andrei Malinovschi
- Clinical Physiology, Dept of Medical Sciences, Uppsala University, Uppsala, Sweden
| | - Jesús Martinez-Moratalla Rovira
- Servicio de Neumología, Complejo Hospitalario Universitario, Albacete, Spain.,Facultad de Medicina Albacete, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Alessandro Marcon
- Unit of Epidemiology and Medical Statistics, Dept of Diagnostics and Public Health, University of Verona, Verona, Italy
| | - Isabelle Pin
- Team of Environmental Epidemiology Applied to Reproduction and Respiratory Health, Institute for Advanced Biosciences, Inserm, Université Grenoble Alpes, Grenoble, France.,Dept of Paediatrics, CHU Grenoble Alpes, Grenoble, France
| | - Jennifer Quint
- Population Health and Occupational Disease, National Heart and Lung Institute, Imperial College London, London, UK
| | - Valerie Siroux
- Team of Environmental Epidemiology Applied to Reproduction and Respiratory Health, Institute for Advanced Biosciences, Inserm, Université Grenoble Alpes, Grenoble, France
| | - Enrique Almar
- Facultad de Medicina Albacete, University of Castilla-La Mancha, Ciudad Real, Spain.,Service of the Health Delegation of Albacete, Albacete, Spain
| | - Valeria Bellisario
- Dept of Public Health and Paediatrics, University of Turin, Turin, Italy
| | - Karl A Franklin
- Dept of Surgical and Perioperative Sciences, Surgery, Umeå University, Umeå, Sweden
| | - José A Gullón
- Dept of Pneumology, Universitary Hospital San Agustín, Avilés, Spain
| | - Mathias Holm
- Dept of Occupational and Environmental Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Joachim Heinrich
- Institute and Clinic for Occupational, Social and Environmental Medicine, University Hospital, LMU Munich, Comprehensive Pneumology Center (CPC) Munich, Member German Center for Lung Research (DZL), Munich, Germany.,Institute of Epidemiology, Helmholtz Zentrum München - German Research Centre for Environmental Health, Neuherberg, Germany.,Allergy and Lung Health Unit, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Australia
| | - Dennis Nowak
- Institute and Clinic for Occupational, Social and Environmental Medicine, University Hospital, LMU Munich, Comprehensive Pneumology Center (CPC) Munich, Member German Center for Lung Research (DZL), Munich, Germany.,Comprehensive Pneumology Center (CPC) Munich, Member German Center for Lung Research (DZL), Munich, Germany
| | | | - Joost J Weyler
- StatUA Statistics Center, University of Antwerp, Antwerp, Belgium
| | - Deborah Jarvis
- Population Health and Occupational Disease, National Heart and Lung Institute, Imperial College London, London, UK
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Cagnoni EF, Ferreira DS, Ferraz da Silva LF, Nicoletti Carvalho Petry AL, Gomes dos Santos AB, Rodrigues Medeiros MC, Dolhnikoff M, Rabe KF, Mauad T. Bronchopulmonary lymph nodes and large airway cell trafficking in patients with fatal asthma. J Allergy Clin Immunol 2014; 135:1352-7.e1-9. [PMID: 25262462 DOI: 10.1016/j.jaci.2014.08.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 08/21/2014] [Accepted: 08/26/2014] [Indexed: 01/30/2023]
Abstract
BACKGROUND Immune responses in asthmatic patients involve coordinated cellular responses in the airways and lymph nodes (LNs). However, no studies have described the composition of different cell populations in the bronchopulmonary LNs of asthmatic patients. OBJECTIVE We sought to investigate the expression of dendritic cells (DCs) and costimulatory molecules, B cells, T cells, TH2-related cytokines, eosinophils, and vascular cell adhesion molecule in the bronchopulmonary LNs and large airways of asthmatic patients. METHODS Using histochemistry, immunohistochemistry, and image analysis, we investigated the expression of Factor XIIIa(+), CD1a(+), CD83(+), and CD207(+) DCs; CD4(+) and CD8(+) T cells; CD20(+) B cells; CD23(+) (FcεRII) cells; IL-4; IL-5; eosinophils, and vascular cell adhesion molecule 1 in the large airways and bronchopulmonary LNs of 11 nonsmokers who died from an asthma exacerbation (fatal asthma [FA]) in comparison with 8 nonasthmatic control subjects. In selected cases of FA, we analyzed the coexpression of HLA-DR, CD40, and CD80 in lung and LN eosinophils. RESULTS The LNs of asthmatic patients exhibited increased density of eosinophils. No other cells were expressed differently in the LNs of patients with FA. The large airways of patients with FA had increased expression of eosinophils in all layers and increased expression of Factor XIIIa(+) cells, CD4(+) and CD8(+) T cells, CD20(+) B cells, and CD23(+) cells in the outer layer. There was colocalization of HLA-DR, CD40, and CD80 in the eosinophils at both sites. CONCLUSIONS FA is associated with the increased presence of eosinophils in the LNs and large airways, which express HLA-DR and costimulatory molecules. The expression of Factor XIIIa(+) monocyte-derived DCs, CD4(+) and CD8(+) T cells, CD20(+) B cells, and CD23(+) cells was increased in the large airways without a corresponding increase in the expression of these cells in the bronchopulmonary LNs. These findings support the concept that eosinophils might act as antigen-presenting cells in patients with FA.
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Affiliation(s)
| | | | | | | | | | | | - Marisa Dolhnikoff
- Department of Pathology, São Paulo University Medical School, São Paulo, Brazil
| | - Klaus F Rabe
- LungenClinic Grosshansdorf, Grosshansdorf, Germany
| | - Thais Mauad
- Department of Pathology, São Paulo University Medical School, São Paulo, Brazil
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Graudenz GS, Ferreira DS. [Use of the ISAAC questionnaire in children under six years: asthma or transient wheezing?]. CAD SAUDE PUBLICA 2013; 28:1609-11. [PMID: 22892980 DOI: 10.1590/s0102-311x2012000800019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Ferreira DS. Exploring Immunology - Concepts and Evidence Gordon MacPherson & Jon Austyn Wiley-Blackwell 2012 http://eu.wiley.com/WileyCDA/Wiley Title/productCd-3527324127.html Price 39,90€, paper back, 372 pages Published April 2012. Eur J Immunol 2012. [DOI: 10.1002/eji.201270098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ferreira DS, Annoni R, Silva LFF, Buttignol M, Santos ABG, Medeiros MCR, Andrade LNS, Yick CY, Sterk PJ, Sampaio JLM, Dolhnikoff M, Wenzel SE, Mauad T. Toll-like receptors 2, 3 and 4 and thymic stromal lymphopoietin expression in fatal asthma. Clin Exp Allergy 2012; 42:1459-71. [PMID: 22994343 PMCID: PMC3459227 DOI: 10.1111/j.1365-2222.2012.04047.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND Airway inflammation in asthma involves innate immune responses. Toll-like receptors (TLRs) and thymic stromal lymphopoietin (TSLP) are thought to be involved in airway inflammation, but their expression in asthmatics' both large and small airways has not been investigated. OBJECTIVE To analyse the expression of TLR2, TLR3, TLR4 and TSLP in large and small airways of asthmatics and compare their expression in smoking and non-smoking asthmatics; to investigate whether TLR expression is associated with eosinophilic or neutrophilic airway inflammation and with Mycoplasma pneumoniae and Chlamydophila pneumoniae infection. METHODS Using immunohistochemistry and image analysis, we investigated TLR2, TLR3, TLR4 and TSLP expression in large and small airways of 24 victims of fatal asthma, FA, (13 non-smokers, 11 smokers) and nine deceased control subjects (DCtrl). TLRs were also measured in 18 mild asthmatics (MA) and 12 healthy controls (HCtrl). M. pneumoniae and C. pneumoniae in autopsy lung tissue were analysed using real-time polymerase chain reaction. Airway eosinophils and neutrophils were measured in all subjects. RESULTS Fatal asthma patients had higher TLR2 in the epithelial and outer layers of large and small airways compared with DCtrls. Smoking asthmatics had lower TLR2 levels in the inner and outer layers of the small airways than non-smoking asthmatics. TSLP was increased in the epithelial and outer layers of the large airways of FA. FA patients had greater TLR3 expression in the outer layer of large airways and greater TLR4 expression in the outer layer of small airways. Eosinophilic airway inflammation was associated with TLR expression in the epithelium of FA. No bacterial DNA was detected in FA or DCtrls. MA and HCtrls had only a small difference in TLR3 expression. CONCLUSIONS AND CLINICAL RELEVANCE Increased expression of TLR 2, 3 and 4 and TSLP in fatal asthma may contribute to the acute inflammation surrounding asthma deaths.
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Affiliation(s)
- D S Ferreira
- Department of Pathology, São Paulo University Medical School, São Paulo, Brazil.
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Ferreira DS, Coutinho PG, Castanheira ES, Correia JH, Minas G. Fluorescence and diffuse reflectance spectroscopy for early cancer detection using a new strategy towards the development of a miniaturized system. Annu Int Conf IEEE Eng Med Biol Soc 2011; 2010:1210-3. [PMID: 21096117 DOI: 10.1109/iembs.2010.5626448] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This paper describes the design of a miniature, cost-effective spectroscopy system for assessing tissue biochemical and morphological information using a few wavelengths. This instrument will integrate thin-film optical filters and silicon photodiodes, avoiding the use of a spectrograph and optical fibers. The components in the set-up design are described. The feasibility of using only 16 wavelengths to accurately extract tissue properties is confirmed on physical tissue models. Also, the suitable spectral performance of several optical filters for the selection of these wavelengths is demonstrated. The reduced size of this device will make possible its implementation in an endoscopic capsule.
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Affiliation(s)
- D S Ferreira
- Industrial Electronics Department, University of Minho, Campus de Azurém, Guimarães, 4800-058, Portugal.
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den Otter I, Silva LFF, Carvalho ALN, Pires-Neto RC, Annoni R, Ferreira DS, Bajema I, van Schadewijk A, Rabe KF, Dolhnikoff M, Sterk PJ, Hiemstra PS, Mauad T. High-affinity immunoglobulin E receptor expression is increased in large and small airways in fatal asthma. Clin Exp Allergy 2011; 40:1473-81. [PMID: 20937062 DOI: 10.1111/j.1365-2222.2010.03576.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND IgE and its high-affinity receptor FcɛRI play an important role in allergy and asthma. The distribution of FcɛRI expression in the airways and within the airway wall, however, is largely unknown. OBJECTIVE In this study, we aimed to map the distribution of FcɛRI in different layers of large airways (LA) and small airways (SA) in lung tissue from non-smoking and smoking patients who died of asthma [fatal asthma (FA)] and non-smoking controls (CTR). METHODS Postmortem lung tissue from 24 cases of non-smoking FA, 13 smoking FA patients and from 19 subjects who died of non-pulmonary causes (CTR) was immunohistochemically stained for FcɛRI and AA1 (mast cell tryptase marker). The expression of these markers was analysed in inner, muscle, and outer layers of both LA and SA by image analysis. RESULTS FcɛRI expression was higher in non-smoking and smoking FA compared with CTR in the inner and outer layer of SA. In the outer layer of LA, FcɛRI expression was higher in non-smoking FA compared with CTR. AA1 was higher in non-smoking FA compared with smoking FA and CTR in the outer layer of the SA, which was correlated with FcɛRI in this layer. CONCLUSION Our results show that the expression of FcɛRI is higher in both LA and SA in FA compared with CTR. These differences are predominantly found in the outer layer where they can be attributed in part to the increased mast cell numbers. These results indicate an increased capacity to mount IgE-mediated reactions in FA, both in LA and SA.
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Affiliation(s)
- I den Otter
- Department of Pulmonology, Leiden University Medical Center, Leiden, The Netherlands.
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Nogueira CC, Ferreira S, Oliveira A, Neves S, Ferreira DS, Almeida J, Moura e Sá J. Bronchoscopic hemostatic tamponade with oxidized regenerated cellulose for major hemoptysis control: two case reports. Rev Port Pneumol 2010; 16:917-924. [PMID: 21067699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Abstract
Hemoptysis is a common and alarming clinical problem. Acute massive hemoptysis is a life threatening condition. Different therapeutic strategies such as surgery, endovascular treatment and/or bronchoscopy have been applied. We report two cases of patients with severe hemoptysis who were treated by bronchoscopy guided topical hemostatic tamponade therapy with oxidized regenerated cellulose.
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Affiliation(s)
- C C Nogueira
- Serviço de Pneumologia, Centro Hospitalar de Vila Nova De Gaia, Vila Nova de Gaia, Portugal.
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Shiang C, Mauad T, Senhorini A, de Araújo BB, Ferreira DS, da Silva LFF, Dolhnikoff M, Tsokos M, Rabe KF, Pabst R. Pulmonary periarterial inflammation in fatal asthma. Clin Exp Allergy 2009; 39:1499-507. [PMID: 19486035 DOI: 10.1111/j.1365-2222.2009.03281.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND To date, little information has been available about pulmonary artery pathology in asthma. The pulmonary artery supplies the distal parts of the lungs and likely represents a site of immunological reaction in allergic inflammation. The objective of this study was to describe the inflammatory cell phenotype of pulmonary artery adventitial inflammation in lung tissue from patients who died of asthma. METHODS We quantified the different inflammatory cell types in the periarterial region of small pulmonary arteries in lung tissue from 22 patients who died of asthma [fatal asthma (FA)] and 10 control subjects. Using immunohistochemistry and image analysis, we quantified the cell density for T lymphocytes (CD3, CD4, CD8), B lymphocytes (CD20), eosinophils, mast cells (chymase and tryptase), and neutrophils in the adventitial layer of pulmonary arteries with a diameter smaller than 500 microm. RESULTS Our data (median/interquartile range) demonstrated increased cell density of mast cells [FA=271.8 (148.7) cells/mm2; controls=177.0 (130.3) cells/mm2, P=0.026], eosinophils [FA=23.1 (58.6) cells/mm2; controls=0.0 (2.3) cells/mm2, P=0.012], and neutrophils [FA=50.4 (85.5) cells/mm2; controls=2.9 (30.5) cells/mm2, P=0.009] in the periarterial space in FA. No significant differences were found for B and T lymphocytes or CD4+ or CD8+ subsets. Chymase/tryptase positive (MCCT) mast cells predominated over tryptase (MCT) mast cells in the perivascular arterial space in both asthma patients and controls [MCCT/(MCCT+MCT)=0.91 (0-1) in FA and 0.75 (0-1) in controls, P=0.86]. CONCLUSIONS Our results show that the adventitial layer of the pulmonary artery participates in the inflammatory process in FA, demonstrating increased infiltration of mast cells, eosinophils, and neutrophils, but not of T and B lymphocytes.
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Affiliation(s)
- C Shiang
- Department of Pathology, School of Medicine, São Paulo University, São Paulo, SP, Brazil
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Araujo BB, Dolhnikoff M, Silva LFF, Elliot J, Lindeman JHN, Ferreira DS, Mulder A, Gomes HAP, Fernezlian SM, James A, Mauad T. Extracellular matrix components and regulators in the airway smooth muscle in asthma. Eur Respir J 2008; 32:61-9. [PMID: 18321931 DOI: 10.1183/09031936.00147807] [Citation(s) in RCA: 144] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
There is an intimate relationship between the extracellular matrix (ECM) and smooth muscle cells within the airways. Few studies have comprehensively assessed the composition of different ECM components and its regulators within the airway smooth muscle (ASM) in asthma. With the aid of image analysis, the fractional areas of total collagen and elastic fibres were quantified within the ASM of 35 subjects with fatal asthma (FA) and compared with 10 nonfatal asthma (NFA) patients and 22 nonasthmatic control cases. Expression of collagen I and III, fibronectin, versican, matrix metalloproteinase (MMP)-1, -2, -9 and -12 and tissue inhibitor of metalloproteinase-1 and -2 was quantified within the ASM in 22 FA and 10 control cases. In the large airways of FA cases, the fractional area of elastic fibres within the ASM was increased compared with NFA and controls. Similarly, fibronectin, MMP-9 and MMP-12 were increased within the ASM in large airways of FA cases compared with controls. Elastic fibres were increased in small airways in FA only in comparison with NFA cases. There is altered extracellular matrix composition and a degradative environment within the airway smooth muscle in fatal asthma patients, which may have important consequences for the mechanical and synthetic functions of airway smooth muscle.
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Affiliation(s)
- B B Araujo
- Dept of Pathology, São Paulo University Medical School, Avenida Dr Arnaldo, 455, 01246-903, São Paulo SP, Brazil
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Spessoto MA, Ferreira DS, Crotti AEM, Silva MLA, Cunha WR. Evaluation of the analgesic activity of extracts of Miconia rubiginosa (Melastomataceae). Phytomedicine 2003; 10:606-609. [PMID: 13678251 DOI: 10.1078/094471103322331629] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The analgesic effects of the hexane, methylene chloride and ethanol extracts of Miconia rubiginosa were evaluated in mice and rats using the acetic acid-induced writhing and hot plate tests. The extracts (100, 200 and 300 mg/kg body wt.) and indomethacin (5 mg/kg body wt.) produced a significant (p < 0.05 and p < 0.01) inhibition of acetic acid-induced abdominal writhing. These same extracts (200 mg/kg body wt.) showed a significant (p < 0.05) antinociceptive effect, lower than that produced by morphine (4 mg/kg body wt.). The fractionation of the methylene chloride extract yielded ursolic and oleanoic acids as the major compounds. Using only gas chromatography, it was possible to identify the following triterpenes in the hexane extract: alpha-amyrin, beta-amyrin, lupeol and beta-sitosterol.
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Affiliation(s)
- M A Spessoto
- Núcleo de Pesquisa em Ciências Exatas e Tecnológicas da Universidade de Franca, Pq. Universitário, Franca-SP, Brazil
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