Abstract
In plasma from 35 women with pregnancy-induced hypertension (PIH) and 35 normal pregnant women both at 39 weeks of gestation, plasma prolactin levels were measured at 8.30 a.m. (PRL1) and 9.30 a.m. (PRL2) under basal conditions. At delivery umbilical cord blood samples were taken for measurement of fetal prolactin (PRLF). PRL1 and PRL2 were higher in women with PIH, but no significant relations were found between PRL1/PRL2 and blood pressure. PRLF did not differ when infants of mothers with PIH and infants of normal pregnant women were compared, but PRLF had a significant direct independent relation with PRL2. The latter relation may be due to the increase in placental oestrogens during pregnancy, which stimulate both the maternal and fetal hypophyses and their prolactin secretion. PRLF did not show any relation with neonatal morbidity, but PRL1 showed a significant direct relation with the Apgar score at 5 min.
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