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在微生物、植物或动物(包括人)的体内,发现有六十多种元素,这些元素,由于在组织中含量甚微,1克潮湿组织中只含有几微微克(Pg)或几微克(μg),故称之为“微量元素”。世界卫生组织指出,目前已知有14种微量元素为人类所必需,即铁、锌、铜、钼、钴、铬、锰、镍、硅、碘、氟、硒、锡、钒。近年来,对于微量元素生物作用的认识,有了很大的提高。。自1973年Barn及Moynahan发现一个2岁肠病性肢端皮炎的患儿血清中锌离子减少,内服硫酸锌治疗,症状完全消失,因而引起皮肤科医师对锌的重视。现就有关锌的一些生物作用及皮肤科的应用进行综述。
Sixty elements are found in the body of microorganisms, plants or animals, including humans, and these elements, due to their low levels in tissues, contain only a few pg or a few micrograms (μg) in 1 gram of moist tissue ), So called “trace elements ”. According to the World Health Organization, 14 kinds of trace elements are known to be necessary for mankind, namely iron, zinc, copper, molybdenum, cobalt, chromium, manganese, nickel, silicon, iodine, fluorine, selenium, tin and vanadium. In recent years, the understanding of the role of trace elements in biology has greatly improved. . Since 1973, Barn and Moynahan found that a 2-year-old children with enterocolitis acuitis serum zinc reduction, oral administration of zinc sulfate, the symptoms disappeared, which led dermatologists attention to zinc. Now on the biological effects of some zinc and dermatological applications are reviewed.