Mangafodipir trisodium [vandf] | 140678-14-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 英文名称: Mangafodipir trisodium [vandf]
• 英文别名: trisodium;2-[2-[carboxylatomethyl-[[3-hydroxy-2-methyl-5-(phosphonatooxymethyl)pyridin-4-yl]methyl]amino]ethyl-[[3-hydroxy-2-methyl-5-(phosphonatooxymethyl)pyridin-4-yl]methyl]amino]acetate;hydron;manganese(2+)
• CAS: 140678-14-4
• 化学式: C22H27MnN4Na3O14P2
• 分子量: 757.3
• InChiKey: BENFPBJLMUIGGD-UHFFFAOYSA-I

物化性质

• 密度：
  1.537; d20 1.01 g/ml
• 溶解度：
  甲醇（微溶、加热、超声处理）、水（微溶、加热）

计算性质

• 辛醇/水分配系数(LogP)：
  -14.92
• 重原子数：
  46
• 可旋转键数：
  13
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.45
• 拓扑面积：
  304
• 氢给体数：
  3
• 氢受体数：
  18

ADMET

代谢

有机磷化合物的代谢主要通过氧化、通过酯酶的水解以及与谷胱甘肽反应进行。去甲基化和葡萄糖苷酸化也可能发生。有机磷农药的氧化可能导致产生中等毒性的产物。一般来说，磷硫代酸盐本身并不直接有毒，但需要经过氧化代谢转化为近端毒素。谷胱甘肽转移酶反应产生的产物在大多数情况下毒性较低。对氧磷酶（PON1）是有机磷化合物代谢中的关键酶。PON1可以通过水解使一些有机磷化合物失活。PON1水解多种有机磷杀虫剂以及神经毒剂（如梭曼、沙林和VX）的活性代谢物。PON1的多态性导致这种酯酶的酶水平和催化效率不同，这反过来表明不同个体可能更容易受到有机磷暴露的毒性影响。

Metabolism of organophosphates occurs principally by oxidation, by hydrolysis via esterases and by reaction with glutathione. Demethylation and glucuronidation may also occur. Oxidation of organophosphorus pesticides may result in moderately toxic products. In general, phosphorothioates are not directly toxic but require oxidative metabolism to the proximal toxin. The glutathione transferase reactions produce products that are, in most cases, of low toxicity. Paraoxonase (PON1) is a key enzyme in the metabolism of organophosphates. PON1 can inactivate some organophosphates through hydrolysis. PON1 hydrolyzes the active metabolites in several organophosphates insecticides as well as, nerve agents such as soman, sarin, and VX. The presence of PON1 polymorphisms causes there to be different enzyme levels and catalytic efficiency of this esterase, which in turn suggests that different individuals may be more susceptible to the toxic effect of organophosphate exposure.

来源:Toxin and Toxin Target Database (T3DB)

毒理性

• 毒性总结

锰是一种细胞毒素，可以损害运输系统、酶活性和受体功能。它主要针对中枢神经系统，尤其是基底神经节中的苍白球。人们认为，锰离子Mn(II)增强了各种胞内儿茶酚胺的自动氧化或转换，导致自由基、活性氧种和其他细胞毒素代谢产物的产生增加，同时耗尽细胞的抗氧化防御机制，导致氧化损伤和选择性破坏多巴胺能神经元。除了多巴胺，还认为锰会干扰其他神经递质，如GABA和谷氨酸。为了产生氧化损伤，锰必须首先克服抗氧化酶超氧化物歧化酶。Mn(II)的神经毒性还与其在生理条件下替代Ca(II)的能力有关。它可以通过钙单向转运体进入线粒体并抑制线粒体氧化磷酸化。它还可能抑制Ca(II)的外排，导致线粒体膜完整性的丧失。Mn(II)已被证明能显著抑制线粒体顺乌头酸酶活性，改变氨基酸代谢和细胞铁稳态。

Manganese is a cellular toxicant that can impair transport systems, enzyme activities, and receptor functions. It primarily targets the central nervous system, particularily the globus pallidus of the basal ganglia. It is believed that the manganese ion, Mn(II), enhances the autoxidation or turnover of various intracellular catecholamines, leading to increased production of free radicals, reactive oxygen species, and other cytotoxic metabolites, along with a depletion of cellular antioxidant defense mechanisms, leading to oxidative damage and selective destruction of dopaminergic neurons. In addition to dopamine, manganese is thought to perturbations other neurotransmitters, such as GABA and glutamate. In order to produce oxidative damage, manganese must first overwhelm the antioxidant enzyme manganese superoxide dismutase. The neurotoxicity of Mn(II) has also been linked to its ability to substitute for Ca(II) under physiological conditions. It can enter mitochondria via the calcium uniporter and inhibit mitochondrial oxidative phosphorylation. It may also inhibit the efflux of Ca(II), which can result in a loss of mitochondrial membrane integrity. Mn(II) has been shown to inhibit mitochondrial aconitase activity to a significant level, altering amino acid metabolism and cellular iron homeostasis. (L228)

来源:Toxin and Toxin Target Database (T3DB)

毒理性

• 致癌物分类

对人类不具有致癌性（未被国际癌症研究机构IARC列名）。

No indication of carcinogenicity to humans (not listed by IARC).

来源:Toxin and Toxin Target Database (T3DB)

毒理性

• 健康影响

锰主要影响神经系统，可能导致行为改变和其他神经系统效应，包括动作可能变得缓慢和笨拙。这种症状组合在足够严重时被称为“锰中毒”。

Manganese mainly affects the nervous system and may cause behavioral changes and other nervous system effects, which include movements that may become slow and clumsy. This combination of symptoms when sufficiently severe is referred to as “manganism”. (L228)

来源:Toxin and Toxin Target Database (T3DB)

毒理性

• 暴露途径

口服（L228）；吸入（L228）

Oral (L228) ; inhalation (L228)

来源:Toxin and Toxin Target Database (T3DB)

毒理性

• 症状

锰主要影响神经系统，可能导致行为改变和其他神经系统效应，包括动作可能变得缓慢和笨拙。这种症状组合在足够严重时被称为“锰中毒”。

Manganese mainly affects the nervous system and may cause behavioral changes and other nervous system effects, which include movements that may become slow and clumsy. This combination of symptoms when sufficiently severe is referred to as “manganism”. (L228)

来源:Toxin and Toxin Target Database (T3DB)

制备方法与用途

生物活性：Mangafodipir trisodium 是一种通过静脉注射增强肝脏磁共振成像（MRI）对比度的造影剂。