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Bronchial hyperresponsiveness consists in excessive response to bronchial stimuli.Bronchial challenge test is used to confirm/exclude asthma (metacholine or histamine).Protection are used to avoid passive exposure of the technicians performing the test, despite the absence of evidence that they could develop a bronchoconstriction even if they suffer from BHR.The purpose of the study is to determine if patients with a high level of bronchial hyperreactivity and exposed passively to histamine during a bronchial challenge, are developing a bronchoconstriction, when placed in the same conditions that the technicians performing these tests.
Bronchial hyperresponsiveness (BHR) consists in excessive response to bronchial stimuli.Bronchial challenge test is used to confirm/exclude asthma.BHR is also present in other diseases such as allergic rhinitis, Chronic Obstructive pulmonary disease,heart failure..
Thes test is performed with metacholine or histamine with spirometric documented response to incremental doses.Protection are used to avoid passive exposure of the technicians performing the test, despite the absence of evidence that they could develop a bronchoconstriction if they suffer from BHR.
The purpose of the study is to determine if patients, newly diagnosed with a high level of bronchial hyperreactivity and exposed passively to histamine during a bronchial challenge, are reacting to histamine when placed in the same conditions that the technicians performing these tests.
Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Prevention
histamine-benzylic alcohol (magistral preparation)
service de pneumologie, CHU St Pierre
Centre Hospitalier Universitaire Saint Pierre
Published on BioPortfolio: 2015-03-18T03:23:23-0400
The asthmatic airway is identified and studied using inhaled agents such as histamine and methacholine. The use of antihistamines prior to the test will inhibit the test result if histami...
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The diverse effects of histamine are mediated by discrete histamine receptors. The principal repository of histamine in the body is the mast cell. However, the effects of histamine on mast cells, espe...
Data from 11 articles and a total of 693 samples were used for a meta-analysis. Pooled mean histamine, 77.86 mg kg, was lower than the FDA limit (200 mg kg). Pooled mean histamine prevalence was 9.19%...
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Drugs that bind to but do not activate histamine receptors, thereby blocking the actions of histamine or histamine agonists. Classical antihistaminics block the histamine H1 receptors only.
Histamine H1 antagonist used in allergic rhinitis; ASTHMA; and URTICARIA. It is a component of COUGH and COLD medicines. It may cause drowsiness.
A cycloheptathiophene blocker of histamine H1 receptors and release of inflammatory mediators. It has been proposed for the treatment of asthma, rhinitis, skin allergies, and anaphylaxis.
A histamine analog and H1 receptor agonist that serves as a vasodilator. It is used in MENIERE DISEASE and in vascular headaches but may exacerbate bronchial asthma and peptic ulcers.
A class of histamine receptors discriminated by their pharmacology and mode of action. Histamine H3 receptors were first recognized as inhibitory autoreceptors on histamine-containing nerve terminals and have since been shown to regulate the release of several neurotransmitters in the central and peripheral nervous systems. (From Biochem Soc Trans 1992 Feb;20(1):122-5)
Pulmonary relating to or associated with the lungs eg Asthma, chronic bronchitis, emphysema, COPD, Cystic Fibrosis, Influenza, Lung Cancer, Pneumonia, Pulmonary Arterial Hypertension, Sleep Disorders etc Follow and track Lung Cancer News ...
The term allergy is used to describe a response, within the body, to a substance, which is not necessarily harmful in itself, but results in an immune response and a reaction that causes symptoms and disease in a predisposed person, which in turn can cau...
COPD (chronic obstructive pulmonary disease)
COPD (chronic obstructive pulmonary disease) is used for a number of conditions including chronic bronchitis and emphysema, which all lead to the airways in the lungs becoming damaged and thus narrower, making inhalation and exhalation harder...