教科胺在动脉瘤下arachnoid 出血中的作用:一个叙事审查
Samantha Nalliah1, Tariq Janjua2, Luis Rafael Moscote-Salazar3
1School of Medicine, University of Galway, Galway, Ireland.
Acute and critical care
|December 11, 2025
概括
在动脉瘤下arachnoid出血 (aSAH) 后增加的catecholamines (上腺素,北上腺素,多巴胺) 恶化了结果. 高水平与同情活动增加相关,导致二次脑损伤和更高的死亡率.
科学领域:
- 神经科学是一个神经科学.
- 心脏病学 心脏病学
- 关键护理医学 关键护理医学
背景情况:
- 动脉瘤下关节出血 (aSAH) 是一种严重的神经紧急情况,死亡率高.
- 催化素释放,一种应激反应,是aSAH病理生物学中的一个重要因素.
- 了解catecholamine的作用对于改善aSAH患者的治疗结果至关重要.
研究的目的:
- 审查catecholamines在动脉瘤下arachnoid出血 (aSAH) 后的结果的影响.
- 综合当前关于catecholamine激增和aSAH预后之间的关系的知识.
主要方法:
- 采用了一个叙事审查方法.
- 在主要数据库 (PubMed,Scopus,Cochrane,Medline,Embase,CINAHL) 进行了有针对性的文献搜索,截至2024年7月.
- 这些关键词包括"下关节出血"",aSAH"",catecholamines"",epinephrine"",norepinephrine"",dopamine"以及与结果相关的术语.
主要成果:
- 在aSAH后始终观察到较高的甲醇胺水平,这与交感神经系统活动的增加有关.
- 甲基荷胺激增有助于二次大脑损伤机制:血管,血脑屏障破坏,大脑胀和神经元损伤.
- 较高的catecholamine度与较差的神经结果和较高的死亡率有关.
结论:
- 甲基荷胺激增是aSAH中二次损伤和不良结果的关键决定因素.
- 阐明甲基胺介导损伤机制可以指导针对性神经保护疗法的开发.
- 旨在减轻甲基胺效应的干预措施可以改善aSAH患者的生存率和功能恢复.
相关概念视频
Adrenergic Agonists: Therapeutic Uses
1.6K
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...
1.6K
Adrenergic Neurons: Neurotransmission
5.1K
Postganglionic sympathetic fibers (except those supplying the sweat glands) releasing noradrenaline or norepinephrine are called noradrenergic or adrenergic neurons. Noradrenaline, dopamine, adrenaline, or epinephrine are collectively called "catecholamines" as they contain a catechol moiety and an amine side chain. The five stages of neurotransmitter release involve their synthesis, storage, release, reuptake and metabolism.
Synthesis: Catecholamine synthesis requires tyrosine, which...
Synthesis: Catecholamine synthesis requires tyrosine, which...
5.1K
Antianginal Drugs: Nitrates and β-Blockers
1.3K
In cardiovascular health, antianginal drugs combat angina pectoris — a condition marked by chest pain owing to diminished blood flow to the heart.
Organic nitrates, such as nitroglycerin, play a pivotal role. Once metabolized, they liberate nitric oxide, a molecular marvel. Nitric oxide triggers guanylyl cyclase and augments cGMP production. This biochemical cascade orchestrates the relaxation of vascular smooth muscles, ushering in vasodilation and enhancing coronary blood flow....
Organic nitrates, such as nitroglycerin, play a pivotal role. Once metabolized, they liberate nitric oxide, a molecular marvel. Nitric oxide triggers guanylyl cyclase and augments cGMP production. This biochemical cascade orchestrates the relaxation of vascular smooth muscles, ushering in vasodilation and enhancing coronary blood flow....
1.3K
Drugs Affecting Neurotransmitter Release or Uptake
1.5K
Certain drugs can affect how neurotransmitters called catecholamines, are released or taken back up in the adrenergic neuron. They can have different effects on the body's sympathetic transmission. Reserpine, a natural compound found in the Rauwolfia shrub, blocks a transporter called vesicular monoamine transporter (VMAT), which leads to a buildup of catecholamines in the cell and reduces sympathetic transmission. Another drug called guanethidine works in multiple ways, including blocking...
1.5K
Adrenergic Agonists: Indirect-Acting Agents
2.5K
Indirect-acting adrenergic agonists potentiate the effects of endogenous catecholamines through different mechanisms without directly binding to adrenoceptors.
One mechanism involves depleting stored catecholamines by displacing them from synaptic vesicles. These agents, known as "displacers," are transported into vesicles at the expense of noradrenaline. Examples include amphetamine and tyramine, which lack a catechol moiety, resulting in prolonged action, improved oral...
One mechanism involves depleting stored catecholamines by displacing them from synaptic vesicles. These agents, known as "displacers," are transported into vesicles at the expense of noradrenaline. Examples include amphetamine and tyramine, which lack a catechol moiety, resulting in prolonged action, improved oral...
2.5K
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System
879
The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...
879


