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Changes of Placental Kiss-1 mRNA Expression and Maternal/Cord Kisspeptin Levels at Preterm Delivery

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Abstract

Kisspeptin, a placental polypeptide secreted throughout pregnancy, is suggested to play a role at parturition. Here we evaluated whether its placental mRNA expression and maternal/fetal plasma levels change at term and preterm delivery, and its effect on oxytocin secretion from placental explants.

Samples were collected from 40 women with singleton pregnancies who underwent elective cesarean section at term (TNL), term vaginal delivery (TD), and preterm vaginal delivery (PTD). Plasma Kisspeptin and oxytocin levels were assessed by ELISA; placental mRNA expression by Real-time quantitative RT-PCR analysis.

Placental expression was significantly (P < 0.0001) higher in PTD than TNL and TD and significantly (P < 0.001) higher in TD than TNL. Maternal/fetal plasma concentrations did not differ among the groups, and maternal were significantly higher than fetal levels (P < 0.05). In placental explants increasing doses of kisspeptin did not modify oxytocin secretion.

In conclusion, labor is associated with increased placental KiSS-1 expression without changes in maternal/fetal circulation.

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Authors and Affiliations

  1. Chair of Obstetrics and Gynecology, Department of Pediatrics, Obstetrics and Reproductive Medicine, University of Siena, “S. Maria alle Scotte”, viale Bracci, 53100, Siena, Italy

    Michela Torricelli MD, Letizia Galleri PhD, Chiara Voltolini MD, Giulia Biliotti MD, Pasquale Florio MD PhD, Maria De Bonis MD & Felice Petraglia MD

Authors
  1. Michela Torricelli MD
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  2. Letizia Galleri PhD
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  3. Chiara Voltolini MD
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  4. Giulia Biliotti MD
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  5. Pasquale Florio MD PhD
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  6. Maria De Bonis MD
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  7. Felice Petraglia MD
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Correspondence to Felice Petraglia MD.

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Torricelli, M., Galleri, L., Voltolini, C. et al. Changes of Placental Kiss-1 mRNA Expression and Maternal/Cord Kisspeptin Levels at Preterm Delivery. Reprod. Sci. 15, 779–784 (2008). https://doi.org/10.1177/1933719108322442

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  • DOI: https://doi.org/10.1177/1933719108322442

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