beta-agonist


Also found in: Dictionary.

beta-agonist

(bā′tə-ăg′ə-nĭst, bē′-)
n.
An agent, such as albuterol, that stimulates beta-receptors in the autonomic nervous system.

Beta-agonist

Beta2-agonist; beta-adrenergic agonist; a bronchodilator medication—inhaled or oral—that relaxes the muscles surrounding the airways to relieve asthma symptoms.

beta-agonist

in full beta (β)-adrenoceptor (-adrenergic) agonist a sympathomimetic drug that stimulates β-adrenoceptors. Subgroup β2agonists are used in asthma, usually by inhalation, to dilate the airways by relaxing smooth muscle, acting as a 'reliever' of symptoms of wheeze, cough or breathlessness. In sport, some are allowed under doping regulations (salbutamol and terbutaline) while those with significant anabolic effects (clenbuterol) are prohibited. See also adrenaline, adrenoceptor, sympathetic nervous system;Drugs and the law.
References in periodicals archive ?
ABSTRACT: In 2010, Salpeter, et al, conducted a literature review that included 36,588 participants and found that long-acting beta-agonists increased catastrophic events 2-fold.
Spirometric parameters were similar before and 3 weeks after stopping long-acting beta-agonist (LABA) therapy in an observational study of 58 patients who had stable asthma and were being treated with an inhaled corticosteroid (ICS) and a LABA.
com)-- Bioo Scientific's MaxSignal[R] Ractopamine ELISA Test Kit has been approved by the United States Department of Agriculture, Agricultural Marketing Service, Science and Technology Program, Laboratory Approval Service, to be used for the verification testing requirements for screening of meat in the Quality System Verification Program (QSVP), Never Fed Beta-Agonists Marketing Program.
Several studies have demonstrated that for mild to moderate asthma exacerbations, administering a beta-agonist via an MDI with a spacer is as effective as using a nebulizer.
Townsend concluded that, "These data show that ginger constituents 6-gingerol, 8-gingerol and 6-shogaol act synergistically with the beta-agonist in relaxing airway smooth muscle, indicating that these compounds may provide additional relief of asthma symptoms when used in combination with beta-agonists.
At the conclusion of their study, the researchers found that tissues treated with the combination of purified ginger components and isoproterenol exhibited significantly greater relaxation than those treated only with isoproterenol; of the three ginger components, 6-shogaol appeared most effective in increasing the relaxing effects of the beta-agonist.
Conflicts over the Role of Beta-Agonists in Production
Fluticasone propionate/salmeterol (Advair) is a combination product of the corticosteroid fluticasone with the long-acting beta-agonist bronchodilator salmeterol.
In a study conducted by Reiss and colleagues (1998), 681 healthy, non-smoking participants who were 15 years of age or older with at least I year of specified daytime asthma symptoms and short acting beta-agonist use were randomly assigned to receive either montelukast or a placebo.
While all of the patients used beta-agonist inhalers - drugs that widen a person's airways and make it easier to breathe - when needed, the 103 patients who received zafirlukast were less likely to use their inhalers.
asthma patients inhale similar beta-agonist drugs, such as salbutamol or terbutaline, notes asthma researcher A.

Full browser ?