Beardmore J M, Lewis-Jones D I, Richards R C
Pediatr Res. 1983 Oct;17(10):825-8. doi: 10.1203/00006450-198310000-00012.
The concentration of urogastrone (URO) and lactose was measured in breast secretions from four women. URO levels were high in precolostrum and fell markedly around the time of parturition to relatively constant low levels in mature milk. When milk samples were fractionated on a Biogel P10 column, the major peak of immunoreactivity occurred at the point at which pure URO eluted. There was good correspondence between the fall in URO levels at birth and the increase in lactose levels, suggesting that the decrease in URO was a dilution effect as the osmotic influence of lactose increased.
对四名女性的乳腺分泌物中的尿抑胃素（URO）和乳糖浓度进行了测量。初乳前URO水平较高，在分娩时显著下降，至成熟乳中维持在相对恒定的低水平。当乳汁样本在Biogel P10柱上进行分级分离时，免疫反应性的主要峰出现在纯URO洗脱的位置。出生时URO水平的下降与乳糖水平的升高之间存在良好的对应关系，这表明随着乳糖渗透影响的增加，URO的减少是一种稀释效应。
