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铁是机体细胞完成生理代谢必需的微量元素。除最重要的转运储存氧等功能外,诸如细胞分裂、电子传递、氧化和还原反应等都需铁的参与,因而细胞必需储铁以进行各种生理活动。正常成人体内含铁约4克:其中近70%在血红蛋白中,因而机体铁代谢在很大程度上与血红蛋白的合成与分解有关;有约10%的铁存在肌红蛋白内;有小量与血浆和细胞外液中的运铁蛋白相结合;还有很小量在含铁的酶和蛋白中。除上述铁外,机体组织中的铁统称为储存铁,用于合成血红
Iron is the body’s cells to complete the necessary physiological metabolism of trace elements. In addition to the most important transport oxygen storage and other functions, such as cell division, electron transfer, oxidation and reduction reactions need iron to participate, so cells must store iron for a variety of physiological activities. Normal adult body contains about 4 grams of iron: nearly 70% of which is in hemoglobin, and thus the body’s iron metabolism is largely related to hemoglobin synthesis and decomposition; about 10% of the iron is present in myoglobin; a small amount of Plasma binds to transferrin in the extracellular fluid; there is also a small amount of iron-containing enzymes and proteins. In addition to the above iron, the body of iron in the organization known as the storage of iron for the synthesis of blood red