Search results for " methacholine"

showing 5 items of 5 documents

Endurance training damages small airway epithelium in mice.

2007

RATIONALE: In athletes, airway inflammatory cells were found to be increased in induced sputum or bronchial biopsies. Most data were obtained after exposure to cold and dry air at rest or during exercise. Whether training affects epithelial and inflammatory cells in small airways is unknown. OBJECTIVES: To test whether endurance training under standard environmental conditions causes epithelial damage and inflammation in the small airways of mice. METHODS AND MEASUREMENTS: Formalin-fixed, paraffin-embedded lung sections were obtained in sedentary (n = 14) and endurance-trained (n = 16) Swiss mice at baseline and after 15, 30, and 45 days of training. The following variables were assessed (m…

Pulmonary and Respiratory MedicineMalePathologymedicine.medical_specialtyInflammationApoptosisCritical Care and Intensive Care MedicineSettore BIO/09 - FisiologiaEpitheliumEpithelial DamageLeukocyte CountMiceEndurance trainingIntensive carePhysical Conditioning AnimalProliferating Cell Nuclear AntigenmedicineLeukocytesAnimalsBronchitisCell ProliferationBasement membraneLungAerobic exercise bronchial responsivenes methacholine deep inspiration leukotrienesbusiness.industryNF-kappa Brespiratory systemImmunohistochemistryEpitheliumrespiratory tract diseasesDisease Models Animalmedicine.anatomical_structureRespiratory epitheliummedicine.symptombusinessAmerican journal of respiratory and critical care medicine
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The loss of the beneficial effect of deep inspiration (DI) in COPD is associated with severity of disease

2007

lung inflation methacholine bronchial obstructionSettore MED/10 - Malattie Dell'Apparato Respiratorio
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Bronchial hyperresponsiveness in children with atopic rhinitis: a 7-year follow-up

2004

Background:  A high prevalence of bronchial hyperresponsiveness (BHR) was found in atopic subjects with rhinitis. Those subjects may be at higher risk for developing bronchial asthma. We evaluated, in a 7-year follow-up, BHR and atopy in a homogeneous population of nonasthmatic children with allergic rhinitis (AR), and their role in asthma development. Methods:  Twenty-eight children (6–15 years) with AR were studied. At enrollment (T0), skin tests, total serum IgE assay, peak expiratory flow (PEF) monitoring and methacholine (Mch) bronchial challenge were performed. BHR was computed as the Mch dose causing a 20% forced expiratory volume (FEV)1 fall (PD20FEV1) and as dose–response slope (DR…

MaleAllergymedicine.medical_specialtyAdolescentAtopic RhinitisImmunologyPopulationLongitudinal StudieFollow-Up StudieAtopychildrennonspecific bronchial hyperresponsivenessInternal medicinemedicineHypersensitivityHumansImmunology and AllergyLongitudinal StudiesHumans; Disease Progression; Asthma; Child; Rhinitis; Longitudinal Studies; Hypersensitivity; Pulmonary Ventilation; Bronchial Hyperreactivity; Follow-Up Studies; Adolescent; Female; MaleeducationChildRhinitiRhinitisAsthmaeducation.field_of_studyallergic rhinitis; asthma; children; methacholine test; nonspecific bronchial hyperresponsivenessallergic rhinitisbusiness.industryRespiratory diseasemethacholine testrespiratory systemasthmamedicine.diseaserespiratory tract diseasesBronchial hyperresponsivenessImmunologyDisease ProgressionMethacholineFemaleBronchial HyperreactivitybusinessPulmonary VentilationFollow-Up Studiesmedicine.drugHuman
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Airway Distensibility by HRCT in COPD Patients

2006

lung inflation bronchial obstruction methacholineSettore MED/10 - Malattie Dell'Apparato Respiratorio
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The airway response to deep inspirations decreases with COPD severity and is associated with airway distensibility assessed by computed tomography.

2008

In patients with mild chronic obstructive pulmonary disease (COPD), the effect of deep inspirations (DIs) to reverse methacholine-induced bronchoconstriction is largely attenuated. In this study, we tested the hypothesis that the effectiveness of DI is reduced with increasing disease severity and that this is associated with a reduction in the ability of DI to distend the airways. Fifteen subjects [Global Initiative for Chronic Obstructive Lung Disease (GOLD) stage I–II: n = 7; GOLD stage III–IV: n = 8] underwent methacholine bronchoprovocation in the absence of DI, followed by DI. The effectiveness of DI was assessed by their ability to improve inspiratory vital capacity and forced expira…

SpirometryHigh-resolution computed tomographyPhysiologyRespiratory SystemVital CapacityHyperinflationSettore MED/10 - Malattie Dell'Apparato RespiratorioSeverity of Illness IndexBronchial Provocation TestsBronchoconstrictor AgentsAirway-parenchyma interdependencePulmonary Disease Chronic ObstructiveBronchoprovocationPhysiology (medical)Forced Expiratory VolumeSeverity of illnessAdministration InhalationmedicineHumansHigh-resolution computed tomographyMethacholine ChlorideAgedAged 80 and overCOPDMethacholinemedicine.diagnostic_testbusiness.industryAirway-parenchyma interdependence; Bronchoprovocation; High-resolution computed tomography; Hyperinflation; Methacholine; Administration Inhalation; Aged; Aged 80 and over; Bronchial Hyperreactivity; Bronchial Provocation Tests; Bronchoconstrictor Agents; Elasticity; Forced Expiratory Volume; Humans; Methacholine Chloride; Middle Aged; Pulmonary Disease Chronic Obstructive; Respiratory System; Severity of Illness Index; Spirometry; Vital Capacity; Inhalation; Tomography Spiral Computed; Physiology; Physiology (medical)Respiratory diseaseArticlesrespiratory systemMiddle Agedmedicine.diseaseElasticityrespiratory tract diseasesBronchial Provocation TestInhalationSpirometryAnesthesiaBronchoconstrictor AgentBronchoconstrictionMethacholinemedicine.symptomBronchial HyperreactivityAirwaybusinessTomography Spiral ComputedHumanmedicine.drugJournal of applied physiology (Bethesda, Md. : 1985)
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