锡南酸:一种低毒性的天然二酸连接体,用于的分解
Yawen Liu1,2,3, Bin Zhao2, Pan He4
1School of Life Sciences and Engineering, Southwest University of Science and Technology, Mianyang 629000, China.
Inorganic chemistry
|April 10, 2024
概括
酸 (CD) 作为腐蚀剂具有前景,有效地从细胞和器官中去除,毒性低于当前的治疗方法. 这种天然化合物可能有助于减轻引起的损伤.
科学领域:
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
- 放射化学 放射化学是指辐射化学.
背景情况:
- 内部污染会导致严重的和骨损伤.
- 迫切需要有效的,低毒性的活性化物腐蚀剂.
- 甲基二胺酸 (DTPA) 是FDA批准的,但可能有毒的药物.
研究的目的:
- 调查天然芳香性碳素酸的肉酸 (CD) 作为潜在的腐化联结体.
- 评估CD在从细胞和动物模型中去除的有效性和安全性.
- 为了比较CD与DTPA的性能.
主要方法:
- 使用NRK-52E细胞进行体外研究,以评估去除和细胞毒性.
- 在小鼠体内研究以确定从脏和大腿骨中去除.
- 血清功能评估以评估乌拉尼尔诱导的损伤.
- 单晶X射线衍射分析乌拉尼尔-CD复合物的结构.
- 热力学分析和密度函数理论 (DFT) 计算,以了解结合亲和力.
主要成果:
- 与DTPA相比,CD的细胞毒性显著降低.
- CD有效地从NRK-52E细胞中去除了约44.5%的乌拉尼尔.
- 迅速给药的CD从小鼠脏中去除了48.2%的乌拉尼尔,从大腿骨中去除了27.3%.
- CD显示了改善乌拉尼尔诱导的损伤的潜力.
- DFT计算表明CD与DTPA相比,对anyl结合的亲和力是CD的7倍.
结论:
- 锡南酸是由于其有效性和低毒性而成为腐蚀的有希望的候选物.
- 与DTPA相比,CD显示出更高的乌拉尼尔结合亲和力和去除能力.
- 需要进一步研究CD作为内部污染的治疗剂.
相关概念视频
01:22EDTA: Chemistry and Properties
1.9K
Polydentate ligands are most widely used in complexometric titrations because they form more stable complexes with the metal ions than mono- or bidentate ligands due to the chelate effect. Examples of polydentate ligands are ethylenediaminetetraacetic acid (EDTA), crown ethers, and cryptands. The most important feature of optimal polydentate ligands is the ability to form 1:1 complexes in a single-step process. Amino carboxylic acid derivatives are frequently used as complexing agents. EDTA is...
1.9K
00:43Complexometric Titration: Ligands
948
Different monodentate and polydentate ligands are used as complexing agents in complexometric titration reactions. The formation of complexes by mono- and bidentate ligands involves two or more intermediate steps, limiting their use as complexing agents. In comparison, polydentate ligands can form complexes with metal ions in a single-step process, facilitating sharper end points. This means polydentate ligands, such as amino carboxylic acid derivatives, are most commonly employed in...
948
02:51Metal-Ligand Bonds
20.7K
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
20.7K
01:19Complexation Equilibria: The Chelate Effect
513
In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
513
01:09Complexation Equilibria: Factors Influencing Stability of Complexes
369
In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
369
00:56Extraction: Advanced Methods
446
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
446