Orciprenalin

9.7mg/L

6.92e+00 g/L

Breast Feeding; Lactation; Milk, Human; Anti-Asthmatic Agents; Bronchodilator Agents; Beta Adrenergic Agonists

Pharmaceuticals

144.64 Ų [M+H-H2O]+ [CCS Type: TW; Method: calibrated with polyalanine and drug standards]

149.9 Ų [M+H]+ [CCS Type: TW; Method: calibrated with polyalanine and drug standards]

150.12 Ų [M+H]+

Benchmark Dataset for the Liver Toxicity Knowledge Base (LTKB)

metaproterenol

Medihaler-Iso

Adrenergics

Not Applicable

no-DILI-concern

R - Respiratory system

R - Respiratory system

QR - Respiratory system

QR - Respiratory system

Orciprenaline (also known as metaproterenol), a synthetic amine, is structurally and pharmacologically similar to isoproterenol. Orciprenaline is used exclusively as a bronchodilator. The pharmacological effects of beta adrenergic agonist drugs, such as orciprenaline, are at least in part attributable to stimulation through beta adrenergic receptors of intracellular adenyl cyclase, the enzyme which catalyzes the conversion of adenosine triphosphate (ATP) to cyclic- 3',5'- adenosine monophosphate (c-AMP). Increased cAMP levels lead to relaxation of bronchial smooth muscles and inhibition of the release of inalammatory mediators from mast cells that are involved in promoting immediate hypersensitivity .

Orciprenaline stimulates the β2-adrenergic receptor expressed in the lungs, uterus, and vasculature supplying skeletal muscles by acting as a moderately selective agonist. It exerts minimal or no effect on alpha-adrenergic receptors. Intracellularly, the actions of orciprenaline are mediated by cAMP, the production of which is augmented by beta stimulation. The drug is believed to work by activating adenylate cyclase, the enzyme responsible for producing the cellular mediator cAMP.

53QOG569E0

METAPROTERENOL

Mechanisms of Action [MoA] - Adrenergic beta2-Agonists

Established Pharmacologic Class [EPC] - beta2-Adrenergic Agonist

Metaproterenol is a beta2-Adrenergic Agonist. The mechanism of action of metaproterenol is as an Adrenergic beta2-Agonist.

Agents that cause an increase in the expansion of a bronchus or bronchial tubes.

Drugs that mimic the effects of stimulating postganglionic adrenergic sympathetic nerves. Included here are drugs that directly stimulate adrenergic receptors and drugs that act indirectly by provoking the release of adrenergic transmitters.

Drugs that prevent preterm labor and immature birth by suppressing uterine contractions (TOCOLYSIS). Agents used to delay premature uterine activity include magnesium sulfate, beta-mimetics, oxytocin antagonists, calcium channel inhibitors, and adrenergic beta-receptor agonists. The use of intravenous alcohol as a tocolytic is now obsolete.

Compounds bind to and activate ADRENERGIC BETA-2 RECEPTORS.