Related Experiment Video

Updated: May 5, 2026

Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma
14:39

Bronchial Thermoplasty: A Novel Therapeutic Approach to Severe Asthma

Published on: November 5, 2010

34.4K

The bronchodilator effect and pharmacokinetics of theobromine in young patients with asthma

F E Simons, A B Becker, K J Simons

    The Journal of Allergy and Clinical Immunology
    |November 1, 1985
    PubMed

    More Related Videos

    Dry Powder and Nebulized Aerosol Inhalation of Pharmaceuticals Delivered to Mice Using a Nose-only Exposure System07:28

    Dry Powder and Nebulized Aerosol Inhalation of Pharmaceuticals Delivered to Mice Using a Nose-only Exposure System

    Published on: April 6, 2017

    42.1K
    Methodology for Sputum Induction and Laboratory Processing13:28

    Methodology for Sputum Induction and Laboratory Processing

    Published on: December 17, 2017

    29.5K

    Related Concept Videos

    Adrenergic Agonists: Mixed-Action Agents01:28

    Adrenergic Agonists: Mixed-Action Agents

    Mixed-action adrenergic agonists, like ephedrine and pseudoephedrine, directly and indirectly affect adrenergic receptors. These agents stimulate adrenoceptors and indirectly release stored neurotransmitters, amplifying the adrenergic response.
    Ephedrine and pseudoephedrine lack a catecholamine group, making them less susceptible to degradation by metabolic enzymes. They have increased oral bioavailability and lipophilicity, resulting in a longer duration of action. Their response is reduced by...
    1.7K
    Adrenergic Antagonists: Pharmacological Actions of β-Receptor Blockers01:27

    Adrenergic Antagonists: Pharmacological Actions of β-Receptor Blockers

    β-receptor blockers significantly impact the cardiovascular system by counteracting catecholamine-induced sympathetic responses. These medications decrease heart rate, contractility, and cardiac output, potentially leading to cardiac depression, life-threatening bradycardia, and death. Therapeutically, β-blockers function as mild antihypertensives and are utilized in treating angina pectoris and cardiac arrhythmias. However, nonselective β-blockers inhibit β2-receptors in...
    1.8K
    Antiasthma Drugs: β2-Adrenoceptor Agonists01:25

    Antiasthma Drugs: β2-Adrenoceptor Agonists

    Bronchodilators are critical in managing asthma, a chronic respiratory condition characterized by airway constriction due to inflammation and hyper-reactivity. Specifically, bronchodilators ease this constriction by relaxing the bronchial muscles, facilitating easier breathing.
    One class of bronchodilators includes β2-adrenoceptor agonists. These agents target the β2-adrenoceptors located on bronchial smooth muscle cells. By stimulating these receptors, β2-agonists induce...
    2.1K
    Antiasthma Drugs: Methylxanthines01:24

    Antiasthma Drugs: Methylxanthines

    Theophylline, a member of the methylxanthine class of bronchodilators, has long been used in asthma management. While its exact mechanism of action is not fully understood, it is believed to have multiple effects on various cellular processes.
    Theophylline is thought to inhibit phosphodiesterase enzymes, increasing intracellular levels of cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP). This rise in cAMP and cGMP concentrations stimulates cardiac function,...
    2.0K
    Asthma-IV: Diagnostic and Management01:30

    Asthma-IV: Diagnostic and Management

    The diagnosis and management of asthma are comprehensive, encompassing clinical assessments, lung function tests, and pharmacological interventions. Here's an overview:
    Clinical Assessment for Asthma:
    This is the first step in diagnosing and managing asthma. It includes:
    3.3K
    Pharmacokinetics in Pediatric Patients: Drug Metabolism01:24

    Pharmacokinetics in Pediatric Patients: Drug Metabolism

    In pediatric care, understanding the nuances of hepatic drug metabolism is crucial, as it significantly differs from that of adults. This divergence is primarily due to the developmental stage of drug-metabolizing enzymes, which affects how medications are processed in the body. In neonates, for instance, the activity of Phase I enzymes—critical for the initial breakdown of drugs—is markedly reduced, functioning at just 20–40% of the levels seen in adults. This reduction poses...
    410