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作者感兴趣地注意到Ｃｈａｌｋｌｅｙ等关于冶炼工人维生素Ｄ代谢产物测量的文章，其中指出同时暴露于镉（Ｃｄ）和铅（Ｐｂ）可使１，２５－二羟维生素Ｄ浓度上升。本文作者也曾报道铅工人血铅浓度和血清１，２５－二羟维生素Ｄ之间的明显关联，但研究对象并未职业性暴露于镉
The authors note with interest the article by Chalkley et al. On the measurement of vitamin D metabolites by smelters indicating that 1,25-dihydroxyvitamin D concentrations increase with simultaneous exposure to cadmium (Cd) and lead (Pb). The authors also reported a significant association between lead concentrations in lead workers and serum 1,25-dihydroxyvitamin D, but the subjects were not exposed to cadmium