人类维生素D缺乏症具有肾小管功能损害,可使磷酸盐、各种氨基酸和重碳酸盐的再吸收减低。婴儿维生素D缺乏症的症状可分为三期。在第Ⅰ期血清钙减低而磷正常;此期没有高磷酸盐尿症或高氨基酸尿症,骨骼改变也不明显。在第Ⅱ、Ⅲ期出现低磷血症 Vitamin D deficiency in humans has impaired renal tubular function and reduces the reabsorption of phosphate, various amino acids and bicarbonate. The symptoms of vitamin D deficiency in infants can be divided into three phases. In the first phase of serum calcium decreased and normal phosphorus; this period no high phosphateuria or high amino aciduria, bone changes are not obvious. Hypophosphatemia occurs in stages II and III