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  • Title: Serum prolactin level changes in the maternal and fetal circulation between the 28th-40th weeks of pregnancy.
    Author: Hercz P, Siklós P, Ungár L.
    Journal: Acta Physiol Hung; 1987; 69(2):155-9. PubMed ID: 3618247.
    Abstract:
    Serum prolactin concentration was determined in blood samples taken from the maternal cubital vein, the umbilical vein and artery between the 28th-40th weeks of pregnancy from 108 parturients, of whom 74 gave birth prematurely and 34 gave birth at term. Results indicated that during this period the prolactin level rose in the umbilical vein and artery but not in the maternal vein. Correlative analysis showed a significant positive correlation between gestational age and the serum prolactin concentration of umbilical arterial and venous blood, but no correlation was found in the case of maternal blood. During the 28th-32nd weeks the prolactin level of maternal blood was found to be higher than that of umbilical blood while during the 33rd-36th weeks and at the 40th week the prolactin level was higher in the umbilical vein and artery. No correlation was found between the prolactin concentration of maternal and umbilical blood. On the basis of these results the authors conclude that fetal prolactin concentration changes occur independently of the maternal organism and increases during the 28th-40th weeks of pregnancy.
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