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PubMed · 7061894

[Decrease or increase in maternal blood prolactin concentrations during labor (author's transl)].

T Yaginuma
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Abstract

Serum cortisol levels were previously shown to increase during labor and delivery in term-pregnants. In the present study, the same sera were investigated for the prolactin levels. The mean levels of 169.1 +/- 15.6 (SE) ng/ml prior to the onset of labor fell significantly to 98.8 +/- 15.6 and 116.8 +/- 15.6ng/ml immediately before and after delivery, respectively . However, the prolactin levels were found to have rather risen in 2 and 6 cases immediately before and after delivery, respectively. Increases in serm cortisol levels during labor in these cases were much greater than in other cases. This indicates that labor-stress, if powerful, can stimulate prolactin release in term-pregnants, as other kinds of stress in non-pregnants and animals. The present results may interpreted as follows: Unknown factors are inhibiting the prolactin release naturally stimulated with labor-stress, and the increased stimulation of labor-stress can release prolactin specially as immediately after delivery.

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FemaleHumansHydrocortisoneLabor, ObstetricPregnancyProlactinStress, PhysiologicalEnglish AbstractJournal Article

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T Yaginuma. 1982. [Decrease or increase in maternal blood prolactin concentrations during labor (author's transl)].. https://pubmed.ncbi.nlm.nih.gov/7061894/

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