在更高的植物中,阿诺洛尔的酶选择性吸收和转移
Natalia S Podio1, Chengliang Sun2, Stacia Dudley2
1ICYTAC, CONICET and ISIDSA, Secretaría de Ciencia y Tecnología, Universidad Nacional de Córdoba, Ciudad Universitaria, Córdoba X5000HUA, Argentina; Department of Environmental Science, University of California Riverside, CA 92521, United States.
The Science of the total environment
|September 1, 2023
概括
这项研究研究了β阻断剂阿提诺洛尔的不同形式 (反体) 如何在植物中被吸收和移动. 结果显示,植物可以优先吸收特定的阿诺洛尔反体,影响作物的制药命运.
科学领域:
- 环境化学环境化学
- 植物科学 植物科学
- 药理学 药理学是指药理学的学科.
背景情况:
- 表面水中的药物通过农作物灌对人类的暴露带来风险.
- 关于植物吸收和影响,药品的性常常被忽视.
- 了解对抗选择性吸收对于评估农业中药物风险至关重要.
研究的目的:
- 为了评估植物中阿诺洛尔 (atenolol) 体的选择性吸收,生物度和转位.
- 为了研究植物对性药物暴露的反应,在反体水平上.
- 突出对陆地生态系统中新出现的污染物进行对抗体特异性分析的重要性.
主要方法:
- 培养Arabidopsis thaliana细胞和Lactuca sativa植物的水培养.
- 暴露于不同度的R/S-(±) -atenolol (1 mg/L,1 或 10 μg/L).
- 量化阿提诺洛尔反体和计算反体分数 (EF) 和转位因子 (TF).
主要成果:
- 阿拉比多普西斯塔利亚纳的细胞对R-(+) -阿提诺醇的摄取有适度的偏好 (EF = 0.532 ± 0.002).
- 乳草植物表现出对抗选择性吸收和转位,在10μg/L (EF = 0.42 ± 0.01) 时,S-(-) -atenolol的优先积累.
- 转位因子 (TF) 也表明了根和叶之间对抗选择性分布.
结论:
- 植物表现出奇拉制药阿特诺洛尔的对抗选择性吸收和转移.
- 药品在植物中的特异性行为对环境风险评估具有重要意义.
- 未来的研究应该考虑在陆地生态系统中制药命运和生态毒性的反体方面.
相关概念视频
Antihypertensive Drugs: Types of β-Blockers
733
β receptors are classified into three subclasses: β1, β2, and β3. β1 receptors are primarily located in the heart and kidneys. When they get activated, they increase heart rate, contractility, and renin release. This process enhances blood pressure and aids in stress management. In contrast, β2 receptors are situated mainly in the lungs, blood vessels, and skeletal muscles. Upon activation, they trigger smooth muscle relaxation, causing bronchodilation and...
733
Short-distance Transport of Resources
16.1K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
16.1K
Adrenergic Antagonists: Chemistry and Classification of β-Receptor Blockers
661
β-adrenergic antagonists, or β-blockers, modulate the sympathetic nervous system by targeting β-adrenoceptors and inhibiting catecholamine-mediated sympathetic responses. β-blockers differ in their adrenoceptor subtype affinity, lipophilicity, and α-blocking capabilities. The history of β-blocker development began with the prototype, dichloroisoprenaline, which exhibited partial agonist activity. As a result, propranolol was developed as a pure antagonist but...
661
Antihypertensive Drugs: Angiotensin II Receptor Blockers
778
In the renin-angiotensin-aldosterone system, a hormone called angiotensin II plays a crucial role. It binds to the AT1 receptors in vascular smooth muscles coupled with Gq proteins. The activation of these receptors activates an enzyme called phospholipase C, which releases two molecules: inositol trisphosphate and diacylglycerol. These molecules cause a chain reaction that leads to the phosphorylation of myosin light chains and promotes interaction between actin and myosin, leading to smooth...
778
Cell Signaling in Plants
5.7K
Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
5.7K
Adrenergic Antagonists: ɑ and β-Receptor Blockers
511
Third-generation β-blockers, such as labetalol and carvedilol, represent a significant advancement in managing cardiovascular conditions. Unlike conventional β-blockers, which can induce peripheral vasoconstriction, third-generation drugs block α1 adrenoceptors. This promotes vasodilation through several mechanisms, such as increased nitric oxide production, inhibition of calcium ion entry, opening of potassium ion channels, and antioxidant action. Labetalol, for instance, is...
511


