上腺素自动注射器药理动力学/药理动力学研究以及对临床实践的潜在后果
Margitta Worm1, Adam T Fox2, Magnus Wickman3
1Allergology and Immunology, Department of Dermatology, Venereology and Allergology, Charité - Universitätsmedizin, Berlin, Germany.
Clinical and translational allergy
|December 26, 2023
概括
上腺素自动注射器 (AAI) 的设计各不相同,这会影响它们的上腺素输送速度. 本综述分析了四个主要的AAI,以确保所有患者,包括超重患者,都能得到有效的过敏反应治疗.
科学领域:
- 药理学和过敏管理
- 生物医学工程和设备设计
背景情况:
- 过敏反应是一种危及生命的过敏反应,需要立即用肌内上腺素治疗.
- 上腺素自注射器 (AAI) 对于基于社区的过敏反应管理至关重要.
- AAI设计的变化 (针的长度,剂量,输送机制) 可能会影响疗效,特别是在超重个体中.
研究的目的:
- 为了分析四个欧洲AAI的药理动力学/药理动力学 (PK/PD) 概况:Anapen,Emerade,EpiPen和Jext.
- 根据设备特征,剂量和患者因素来划分上腺素的输送和生理效应.
- 为了比较不同AAI的功能性质和人体工程学,以获得最佳的过敏反应治疗.
主要方法:
- 在四个主要的AAI中对PK/PD概况进行比较分析.
- 对设备特征的评估:针的尺寸,输送机制和上腺素剂量.
- 考虑生理因素:皮肤到肌肉的深度和心血管反应.
主要成果:
- 在分析的AAI中,功能性质和上腺素输送动力学存在显著差异.
- 设备的设计和针的特性影响到达到治疗性上腺素度.
- 人体工程学因素和交付机制会影响不同患者群体的易用性和有效性.
结论:
- 了解AAI变异对于为个体患者选择最有效的设备至关重要.
- 进一步的研究应该专注于优化AAI设计,以确保一致和快速的上腺素输送.
- 需要标准化测试协议来比较不同患者人口统计和临床场景的AAI性能.
相关概念视频
01:30Adrenergic Agonists: Therapeutic Uses
781
Adrenergic agonists have diverse therapeutic uses across various medical conditions and emergencies.
Emergency and Intensive Care Unit (ICU) applications: Pressor agents increase blood pressure, heart rate, and contractility in shock and organ failure situations. Dopamine can induce vasodilation and stimulate adrenoceptors. Endogenous catecholamines are effective in treating cardiogenic shock. α2-agonists like clonidine can reverse anesthesia-induced hypertension.
Allergies and...
Emergency and Intensive Care Unit (ICU) applications: Pressor agents increase blood pressure, heart rate, and contractility in shock and organ failure situations. Dopamine can induce vasodilation and stimulate adrenoceptors. Endogenous catecholamines are effective in treating cardiogenic shock. α2-agonists like clonidine can reverse anesthesia-induced hypertension.
Allergies and...
781
01:26Adrenergic Receptors: β Subtype
1.7K
β-adrenoceptors have varied sensitivities towards adrenaline, noradrenaline, and isoprenaline. The order of agonist potency is as follows:
Isoprenaline > Adrenaline > Noradrenaline
Neurotransmitter binding to these receptors causes activation of adenylyl cyclase resulting in increased concentrations of cAMP and modulation of calcium ion channels within the cell. They are further classified into β1, β2, and β3 subtypes.
β1-adrenoceptors: β1-adrenoceptors...
Isoprenaline > Adrenaline > Noradrenaline
Neurotransmitter binding to these receptors causes activation of adenylyl cyclase resulting in increased concentrations of cAMP and modulation of calcium ion channels within the cell. They are further classified into β1, β2, and β3 subtypes.
β1-adrenoceptors: β1-adrenoceptors...
1.7K
01:30Adrenergic Agonists: Direct-Acting Agents
1.5K
Drugs that mimic the action of endogenous catecholamines like noradrenaline and adrenaline are called adrenergic agonists or sympathomimetics. Based on their mechanism of action, sympathomimetics can be classified as direct-, indirect-, or mixed-acting sympathomimetics. Direct-acting adrenergic agonists activate adrenoceptors without affecting presynaptic neurons, making them independent of neuronal catecholamine-depleting agents like reserpine and guanethidine.
These agents can be classified...
These agents can be classified...
1.5K
01:28Adrenergic Agonists: Mixed-Action Agents
722
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...
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...
722
01:18Adrenergic Agonists: Therapeutic Classification
804
Adrenergic agonists can be classified based on their therapeutic uses and mechanisms of action. They serve various purposes in clinical applications.
Vasopressor or pressor agents: They increase blood pressure and function as cardiac stimulants. Examples include endogenous catecholamines (norepinephrine and dopamine) and synthetic agents (phenylephrine).
Bronchodilators: β2-agonists can relax bronchial muscles and widen airways. They are commonly used for treating obstructive pulmonary...
Vasopressor or pressor agents: They increase blood pressure and function as cardiac stimulants. Examples include endogenous catecholamines (norepinephrine and dopamine) and synthetic agents (phenylephrine).
Bronchodilators: β2-agonists can relax bronchial muscles and widen airways. They are commonly used for treating obstructive pulmonary...
804
01:31Adrenergic Receptors: ɑ Subtype
1.5K
Adrenoceptors are classified into α and ꞵ classes based on their potencies to catecholamine agonists. α-adrenoceptors show the following order of catecholamine potency:
Adrenaline ≥ Noradrenaline >> Isoprenaline
α-adrenoceptors are further divided into α1 and α2-adrenoceptors.
α1-Adrenoceptors: These receptors are located postsynaptically on the effector organs and cause constriction of smooth muscle mediated by activation of phospholipase...
Adrenaline ≥ Noradrenaline >> Isoprenaline
α-adrenoceptors are further divided into α1 and α2-adrenoceptors.
α1-Adrenoceptors: These receptors are located postsynaptically on the effector organs and cause constriction of smooth muscle mediated by activation of phospholipase...
1.5K