Objective: We hypothesized that regimens of labor induction do not alter the biphasic secretion of maternal prolactin (PRL) seen during spontaneous labor.
Methods: Serial blood samples drawn from 12 women before, during, and after induced labor were assayed for PRL and hCG and compared with cervical dilatation and uterine contraction frequency (UCF). Induction methods were cervical ripening with dinoprostone gel (Prepidil) followed by oxytocin infusion (n = 1), amniotomy followed by oxytocin (n = 4), oxytocin followed by amniotomy (n = 3), amniotomy only (n = 2), and oxytocin only (n = 2).
Results: Regardless of the induction method, PRL decreased with advancing cervical dilatation during the first stage of labor and reached a nadir at full dilatation. Prolactin levels then increased rapidly during the second stage, correlating significantly with the increase in UCF, and peaked at 1 hour postpartum before decreasing. Levels of hCG increased during labor and peaked just before or at delivery before rapidly decreasing.
Conclusions: The biphasic secretion of maternal PRL is a fundamental characteristic of active term labor and occurs regardless of the method used to induce labor.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Elevated levels of exogenous prolactin promote inflammation at the maternal-fetal interface via the JAK2/STAT5B signaling axis.
Front Immunol
January 2025
Department of Microbiology, Biochemistry, and Immunology, Morehouse School of Medicine, Atlanta, GA, United States.
The placenta is a unique organ with various immunological and endocrinological roles that modulate maternal and fetal physiology to promote maternal-fetal tolerance, pregnancy maintenance, and parturition at term. During pregnancy, the hormone prolactin (PRL) is constitutively secreted by the placenta and is necessary for implantation, progesterone support, fetal development, and overall immune modulation. While PRL is essential for pregnancy, studies suggest that elevated levels of serum PRL (hyperprolactinemia) are associated with adverse pregnancy outcomes, including miscarriage, preterm birth, and preeclampsia.
View Article and Find Full Text PDFProlactin in sleep and EEG regulation: new mechanisms and sleep-related brain targets complement classical data.
Neurosci Biobehav Rev
January 2025
Laboratory of Molecular and Systems Neurobiology, Department of Physiology and Neurobiology, Eötvös Loránd University.
The role of prolactin in sleep regulation has been the subject of extensive research over the past 50 years, resulting in the identification of multiple, disparate functions for the hormone. Prolactin demonstrated a characteristic circadian release pattern with elevation during dark and diminution during light. High prolactin levels were linked to non-rapid eye movement sleep and electroencephalogram delta activity in humans.
View Article and Find Full Text PDFInvestigating the effect of quail egg supplementation enriched with marine macroalgae on hematological indices, lipid profile parameters, and blood glucose level of Sprague Dawley rats during lactation and offspring growth.
Open Vet J
November 2024
Department of Animal Nutrition and Feed Science, Faculty of Animal Science, Universitas Gadjah Mada, Yogyakarta, Indonesia.
Background: The lactation period is a crucial period where the nutritional status and the mother's environment influence milk production, impacting organ differentiation, function, and structure in the baby's body.
Aim: The study aimed to determine the impact of providing lactating rats with quail egg supplements enriched with marine macroalgae on their physiological condition (blood cells, lipids, blood glucose, antioxidant activity, and prolactin hormone levels) and the growth of their offspring.
Methods: The study involved 25 lactating Sprague Dawley white rats aged 3 months old and weighing approximately 200 g divided into five treatment groups thus; T0 as the control, T1 with quail eggs enriched with commercial feed, T2 with quail eggs enriched with 3% of marine macroalgae, T3 with quail eggs enriched with 4% of marine macroalgae, and T4 with quail eggs enriched with 5% of marine macroalgae, which received one quail egg for 21 days.
Productive, Reproductive, Behavioural, Gene Expression, Histological, and Economic Criteria of Feeding Fenugreek and Berseem Seeds as Alternative Protein Sources in New Zealand White Does Rabbits (Oryctolagus Cuniculus).
J Anim Physiol Anim Nutr (Berl)
December 2024
Veterinary Economics and Farm Management, Department of Animal Wealth Development, Faculty of Veterinary Medicine, Damanhour University, Damanhour, Egypt.
Feed cost represents about 70% of the total production costs of rabbit farms. There is little research on the usage of Berseem and Fenugreek seeds as substitutes for soybeans in rabbit diets. The current investigation was conducted to assess the influence of dietary inclusion of Fenugreek and/or Berseem seeds at varying levels as a substitute for soybean meal on reproductive performance, milk production, maternal behaviour, economic efficiency, mammary gland and ovarian histology, and relative expression of reproductive genes of New Zealand White rabbit does.
View Article and Find Full Text PDFAntenatal Steroids Enhance Long-Term Neonatal Lung Outcomes and are Associated with Placental Alterations in Experimental Chorioamnionitis.
Am J Physiol Lung Cell Mol Physiol
December 2024
Department of Pediatrics, Boston Medical Center, Boston University Chobanian and Avedisian School of Medicine, Boston, MA.
Intrauterine inflammation from chorioamnionitis (CA) is associated with placental dysfunction and increased risk of bronchopulmonary dysplasia (BPD), the chronic lung disease of prematurity. Antenatal steroid (ANS) treatment improves early respiratory outcomes for premature infants. However, it remains unclear whether ANS improve long-term respiratory outcomes, and whether these effects are mediated through improvement of placental dysfunction and/or direct impact on the fetal lung.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!