重金属离子对磷脂理化性质的作用机理

L. Shishkina, P. Beletskaya, A. Dubobik, A. Mashukova, V. Shvydkiy
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引用次数: 0

摘要

研究了二价铜离子和铁离子在金属离子浓度范围内对它们与磷脂形成络合物的能力和脂质过氧化过程强度的影响,以及对天然脂质在水介质中的自聚集和所形成颗粒的ξ电位的影响。通过高斯法对卵磷脂、金属离子及其混合物水溶液的紫外光谱进行数学分析,发现铜离子和铁离子与磷脂形成络合物,并对氧化产物的含量产生影响。此外,影响程度取决于离子浓度、离子性质和脂质氧化性。卵磷脂颗粒的ξ电位值与水介质中的离子浓度没有线性关系,而且它们对卵磷脂聚集体形成的大小的作用能力存在本质区别。根据所获得的数据,我们可以得出结论:天然水的质量取决于重金属离子的浓度及其对水中生物体固有的脂质过氧化调节系统参数的作用能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
MECHANISM OF ACTION OF THE HEAVY METAL IONS ON THE PHYSICOCHEMICAL PROPERTIES OF PHOSPHOLIPIDS
Effect of the divalent copper and iron ions on their ability to form complexes with phospholipids and the lipid peroxidation processes intensity, to affect the self-aggregation of the natural lipids in the water medium and ξ-potential of formed particles are studied in the wild range of the metal ion concentrations. Mathematical analysis of UV-spectra of the water solutions of lecithin, metal ions and their mixtures by Gauss method is revealed that copper and iron ions form complexes with phospholipids and act on content of the oxidation products. Besides, the scale of effect depends on the ion concentration, its nature and the lipid oxidizability. The absence of the linear dependence of the ξ-potential value for the lecithin particles on the ion concentration in the water medium and the essential differences of their ability to act on size of formed by lecithin aggregates are obtained. The obtained data allow us to conclude that quality of the natural water is due to both concentrations of the heavy metal ions and their ability to act on the lipid peroxidation regulatory system parameters of the inherent in water bio-objects.
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