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通过对人体的化学分析,发现20多种无素是人体的重要元素,它们是以化合物的形式存在于体内。如:水、蛋白质、脂肪、无机盐、核酸、中间产物和糖类等。研究发现,这些化合物不是固定不变的,它们随着生命的活动发生变化,即要新陈代谢。而 Na~+、K~+、Ca~(++)、Mg~(++)、Mn~(++)离子在人体代谢中,起着极为重要的作用。如:Na~+、K~+是细胞膜上运输物质不可少的,膜上的钠泵是细胞膜与外界交换物质一种工具。酶的活性对细胞周期的影响,主要是通过调节细胞内 Na~+实现的。Na~+是 DNA 不稳定因子,能破坏双螺旋间氢键,促勤遗传信息开放。分裂期细胞内 Na~+浓度高,致使遣遗传信息开放,刺激蛋白质合成,能促进细胞生长。肌细胞内过高的 Na~+交换膜外 Ca~(++),细胞内高 Ca~(++)刺激血管持久性收缩,从而升高血压。ca~(++)对人体甚为重要。在血液、骨骼和肌肉内都含有钙。缺少它会引起多种疾病。Mg~(++)与 Ca~(++)不同,
Through the chemical analysis of the human body, found that more than 20 kinds of non-elemental elements of the human body, they are in the form of compounds exist in the body. Such as: water, protein, fat, inorganic salts, nucleic acids, intermediates and carbohydrates. The study found that these compounds are not fixed, they change with the activities of life, that is, to be metabolized. However, Na ~ +, K ~ +, Ca ~ (++), Mg ~ (++) and Mn ~ (++) ions play a very important role in human metabolism. Such as: Na ~ +, K ~ + is essential for the transport of substances on the cell membrane, membrane sodium pump is a tool for the exchange of material between the cell membrane and the outside world. Enzyme activity on the cell cycle, mainly through the regulation of intracellular Na ~ +. Na ~ + is a DNA instability factor that can destroy double helix hydrogen bonds and promote the opening of genetic information. High concentration of intracellular Na ~ + during cell division leads to the opening up of genetic information, stimulating protein synthesis and promoting cell growth. High intracellular Na ~ + exchange membrane Ca ~ (++), intracellular high Ca ~ (++) stimulates the persistent contraction of blood vessels, thereby increasing blood pressure. ca ~ (++) is very important to the human body. Contains calcium in the blood, bones and muscles. Lack of it can cause a variety of diseases. Mg ~ (++) is different from Ca ~ (++)