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Beta-adrenergic agonist. Beta adrenergic agonists or beta agonists are medications that relax muscles of the airways, causing widening of the airways and resulting in easier breathing. [ 1] They are a class of sympathomimetic agents, each acting upon the beta adrenoceptors. [ 2] In general, pure beta-adrenergic agonists have the opposite ...
1. -adrenergic agonist. β1-Adrenergic receptor agonists, also known as beta-1 agonists, are a class of drugs that bind selectively to the β 1 -adrenergic receptor. As a result, they act more selectively upon the heart. β-Adrenoceptors typically bind to norepinephrine release by sympathetic adrenergic nerves and to circulating epinephrine.
2. -adrenergic agonist. Beta2-adrenergic agonists, also known as adrenergic β2 receptor agonists, are a class of drugs that act on the β 2 adrenergic receptor. Like other β adrenergic agonists, they cause smooth muscle relaxation. β 2 adrenergic agonists' effects on smooth muscle cause dilation of bronchial passages, vasodilation in muscle ...
The beta-1 adrenergic receptor (β 1 adrenoceptor), also known as ADRB1, can refer to either the protein-encoding gene (gene ADRB1) or one of the four adrenergic receptors. [ 5] It is a G-protein coupled receptor associated with the Gs heterotrimeric G-protein that is expressed predominantly in cardiac tissue.
Chemically, isoprenaline is a synthetic catecholamine and is the N - isopropyl analogue of norepinephrine (noradrenaline) and epinephrine (adrenaline). [ 11][ 3][ 12][ 13] Isoprenaline was one of the first synthetic sympathomimetic amines and was the first selective β-adrenergic receptor agonist. [ 7][ 14] The medication was discovered in 1940 ...
Adrenergic agonist. An adrenergic agonist is a drug that stimulates a response from the adrenergic receptors. The five main categories of adrenergic receptors are: α 1, α 2, β 1, β 2, and β 3, although there are more subtypes, and agonists vary in specificity between these receptors, and may be classified respectively.
Salbutamol. Salbutamol, also known as albuterol and sold under the brand name Ventolin among others, [ 1] is a medication that opens up the medium and large airways in the lungs. [ 8] It is a short-acting β 2 adrenergic receptor agonist that causes relaxation of airway smooth muscle. [ 8] It is used to treat asthma, including asthma attacks ...
Fenoterol branded as Berotec. Fenoterol is a short-acting β 2 agonist that also stimulates β 1 receptors. Fenoterol has more cardiovascular toxicity than isoprenaline or salbutamol. [ 6][ 7] Fenoterol was widely used in New Zealand in the late 1970s and the 1980s until it was removed from the New Zealand drug tariff in 1989 because its ...