Bronchoconstriction
Mostrando 1-12 de 207 artigos, teses e dissertações.
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1. Exercise-induced Bronchoconstriction and its Relevance in Public Health
International Journal of Cardiovascular Sciences. Publicado em: 2022
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2. Exercise-Induced Bronchoconstriction: A Frequent, but Neglected Cause of Chest Pain
International Journal of Cardiovascular Sciences. Publicado em: 2022
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3. Eficácia do formoterol na reversão imediata do broncoespasmo / Efficacy of inhaled formoterol in reversing bronchoconstriction
Objetivo: Avaliar efetividade e rapidez de ação do formoterol liberado através de inalador para pó seco na reversão de broncoespasmo induzido pela metacolina. Métodos: Avaliaram-se prospectivamente 84 pacientes com queda do volume expiratório forçado no primeiro segundo 20% após inalação de metacolina. Todos estavam sob investigação de sintomas
Publicado em: 2010
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4. Os efeitos de um programa de exercícios respiratórios para idosos asmáticos / The effects of a respiratory exercise program tailored for elderly people with asthma
INTRODUCTION: People can develop asthma at any given age, and asthma prevalence in older adults is no different than that observed in younger people. Asthma in older adults is frequently underdiagnosed, and this is reflected in the fact that approximately 60% of people who die from asthma have surpassed the age of 65. Equally important is the fact that reduc
Publicado em: 2009
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5. Protective effect of bronchial challenge with hypertonic saline on nocturnal asthma
Inhalation of hypertonic saline (HS) causes bronchoconstriction in asthmatic subjects. Repeated inhalation of HS leads to substantially reduced bronchoconstriction, known as the refractory period. Refractoriness due to different stimuli has also been described (cross-refractoriness). Nocturnal asthma is defined as an increase in symptoms, need for medication
Brazilian Journal of Medical and Biological Research. Publicado em: 2008-03
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6. Broncoespasmo induzido pelo exercício em corredores de longa distância / Exercise-induced bronchospasm in long-distance runners
A alta prevalência de broncoespasmo induzido pelo exercício (BIE) tem sido observada em atletas que praticam modalidades de longa duração. Até o presente momento, nenhum estudo foi realizado no Brasil. Por essa razão, o objetivo deste estudo foi verificar a prevalência de BIE em corredores de longa distância. Para isto, 22 atletas do gênero masculin
Publicado em: 2008
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7. Effect of the cysteinyl-leukotrienes on the production of eosinophils in culture of bone marrow: direct actions, mediation of the actions of the indometacina and the aspirin, and regulation of the reply to the PGE2. / Efeitos dos cisteinil-leucotrienos sobre a produção de eosinófilos em cultura de medula óssea: ações diretas, mediação das ações da indometacina e da aspirina, e regulação da resposta à PGE2.
Cysteinyl-Leukotrienes (CysLT) are important mediators of asthma, which induce bronchoconstriction, mucus secretion and a variety of regulatory effects on the infiltrating leukocyte populations, especially eosinophils. Increased CysLT production resulting from the shunting of arachidonic acid towards the 5-lipoxygenase (5-LO) pathway in the absence of active
Publicado em: 2007
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8. Mechanisms underlying gas exchange alterations in an experimental model of pulmonary embolism
The aim of the present study was to determine the ventilation/perfusion ratio that contributes to hypoxemia in pulmonary embolism by analyzing blood gases and volumetric capnography in a model of experimental acute pulmonary embolism. Pulmonary embolization with autologous blood clots was induced in seven pigs weighing 24.00 ± 0.6 kg, anesthetized and mecha
Brazilian Journal of Medical and Biological Research. Publicado em: 2006-09
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9. Protective effects of phosphodiesterase inhibitors on lung function and remodeling in a murine model of chronic asthma
The aim of the present study was to compare the efficacy of a novel phosphodiesterase 4 and 5 inhibitor, LASSBio596, with that of dexamethasone in a murine model of chronic asthma. Lung mechanics (airway resistance, viscoelastic pressure, and static elastance), histology, and airway and lung parenchyma remodeling (quantitative analysis of collagen and elasti
Brazilian Journal of Medical and Biological Research. Publicado em: 2006-02
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10. Mecanismos que interferem no intercambio gasoso no tromboembolismo pulmonar experimental / Mechanisms underlying gas exchange alterations in an experimental model of pulmonary embolism
The literature broadly approaches the mechanisms responsible for the genesis of the hypoxemia in pulmonary embolism (PE). The aim of this study is to analyze the ventilation/perfusion ratio, which contributed to the hypoxemia in PE by analyzing blood gases and volumetric capnography in a model of experimental acute PE. Pulmonary embolization with autologous
Publicado em: 2006
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11. Participação dos canais de cálcio na hiperreatividade induzida por ovalbumina em traquéias isoladas de ratos / Role of the calcium channels on ovalbumin-induced rat airway hyperresponsiveness
In order to verify the interference of the antigenic challenge on traqueal contractility in vitro, male rats (250 -350 g) were ovalbumine (OVA)-sensitized and, 13 to 14 days later, they were challenged through the sensitizing antigen inhalation (OVA, 1 mg/ml, followed by 5 mg/ml). Animals were sacrificed immediately (SD0) or 24 hours (SD24) after the antigen
Publicado em: 2004
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12. Effects of histamine on lung permeability in normal and asthmatic subjects.
The permeability of respiratory mucosa, as measured by clearance of diethylenetriamine penta-acetate (DTPA) labelled with technetium 99m, was similar in seven normal and nine asthmatic subjects. Histamine induced bronchoconstriction was associated with a 50% increase in permeability in both groups of subjects. In normal subjects inhaled salbutamol, given as