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过去,许多文章和资料中都将砷与癌或毒药相联系,国际癌症中心特别工作组也将砷和某些砷化物列为对人类具有致癌性的物质.但许多文件同样亦承认,砷的致癌实验与流行病学调查的结论是不一致的.近年来的研究表明,砷并非总是致癌的,在正常情况下,砷对肿瘤具有良性作用,不仅不会致癌,而且还是高等动物所必需的微量营养素,本文就这两方面介绍近年来的研究概况.砷与癌(一)砷抗癌的实验和流行病学证据弗罗斯特(Frost)报道,在从1786年以来应用
In the past, arsenic was linked to cancer or poison in many articles and materials. The International Cancer Center Task Force also listed arsenic and certain arsenides as substances that are carcinogenic to humans. However, many documents also acknowledge that arsenic The conclusions of carcinogenic and epidemiological investigations are inconsistent. Recent studies have shown that arsenic is not always carcinogenic. Under normal circumstances, arsenic has a benign effect on tumors, not only not carcinogenic, but also necessary for higher animals. Micronutrients, this article describes the recent research on these two aspects. Arsenic and cancer (a) Experimental and epidemiological evidence of arsenic against cancer Frost (Frost) has been applied since 1786