Modulation of Free Corticotrophin-Releasing Hormone, Adrenal and Placental Steroid Hormone Levels Induced by Mifepristone during Pregnancy

Mifepristone is a progesterone receptor antagonist widely used in obstetrics. The aim of the study was to focus on free corticotrophin-releasing hormone (CRH) and also describe modulation of adrenal and placental steroid hormone concentrations induced by mifepristone. Methods: Twenty-six women were...

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Veröffentlicht in:Fetal diagnosis and therapy 2012-01, Vol.32 (4), p.267-270
Hauptverfasser: Ceccaldi, Pierre-François, Saada, Julien, Nicolas, Mireille, Ducarme, Guillaume, Blot, Philippe, Guibourdenche, Jean, Luton, Dominique
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container_end_page 270
container_issue 4
container_start_page 267
container_title Fetal diagnosis and therapy
container_volume 32
creator Ceccaldi, Pierre-François
Saada, Julien
Nicolas, Mireille
Ducarme, Guillaume
Blot, Philippe
Guibourdenche, Jean
Luton, Dominique
description Mifepristone is a progesterone receptor antagonist widely used in obstetrics. The aim of the study was to focus on free corticotrophin-releasing hormone (CRH) and also describe modulation of adrenal and placental steroid hormone concentrations induced by mifepristone. Methods: Twenty-six women were enrolled in the study. They received mifepristone for termination of pregnancy. Maternal blood samples were retrieved before administration of mifepristone (600 mg) and 48 h after, just before induction of labor. Bound and free CRH levels were determined in maternal blood concomitantly with cortisol, estriol, progesterone and SDHEA levels. Also paired fetal cord blood samples were collected. Results: Maternal plasmatic CRH level did not change after mifepristone absorption but free CRH increased significantly (0.500 ± 0.326 vs. 0.388 ± 0.303 ng/ml, p = 0.040). A significant decrease of progesterone was observed (83.6 ± 49.3 vs. 95.6 ± 54.9 ng/ml, p = 0.001) with a lower progesterone/estriol ratio (26.9 ± 15.7 vs. 40.7 ± 31.1, p = 0.004). There was a strong association between maternal and fetal free CRH (r 2 = 0.675, p = 0.001), cortisol (r 2 = 0.570, p = 0.019), and positive but modest correlation for progesterone (r 2 = 0.341, p = 0.046) and estriol (r 2 = 0.379, p = 0.025) levels. Conclusion: Mifepristone has an effect on free CRH level and changes the estriol-progesterone balance.
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The aim of the study was to focus on free corticotrophin-releasing hormone (CRH) and also describe modulation of adrenal and placental steroid hormone concentrations induced by mifepristone. Methods: Twenty-six women were enrolled in the study. They received mifepristone for termination of pregnancy. Maternal blood samples were retrieved before administration of mifepristone (600 mg) and 48 h after, just before induction of labor. Bound and free CRH levels were determined in maternal blood concomitantly with cortisol, estriol, progesterone and SDHEA levels. Also paired fetal cord blood samples were collected. Results: Maternal plasmatic CRH level did not change after mifepristone absorption but free CRH increased significantly (0.500 ± 0.326 vs. 0.388 ± 0.303 ng/ml, p = 0.040). A significant decrease of progesterone was observed (83.6 ± 49.3 vs. 95.6 ± 54.9 ng/ml, p = 0.001) with a lower progesterone/estriol ratio (26.9 ± 15.7 vs. 40.7 ± 31.1, p = 0.004). 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Antiinflammatory agents</topic><topic>Corticotropin-Releasing Hormone - blood</topic><topic>Corticotropin-Releasing Hormone - metabolism</topic><topic>Corticotropin-Releasing Hormone - secretion</topic><topic>Dehydroepiandrosterone Sulfate - blood</topic><topic>Delivery. Postpartum. Lactation</topic><topic>Estriol - blood</topic><topic>Estriol - secretion</topic><topic>Female</topic><topic>Fetal Blood - metabolism</topic><topic>General aspects</topic><topic>Gynecology. Andrology. Obstetrics</topic><topic>Humans</topic><topic>Hydrocortisone - blood</topic><topic>Hydrocortisone - secretion</topic><topic>Medical sciences</topic><topic>Mifepristone - pharmacology</topic><topic>Original Paper</topic><topic>Paraventricular Hypothalamic Nucleus - drug effects</topic><topic>Paraventricular Hypothalamic Nucleus - secretion</topic><topic>Pharmacology. 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The aim of the study was to focus on free corticotrophin-releasing hormone (CRH) and also describe modulation of adrenal and placental steroid hormone concentrations induced by mifepristone. Methods: Twenty-six women were enrolled in the study. They received mifepristone for termination of pregnancy. Maternal blood samples were retrieved before administration of mifepristone (600 mg) and 48 h after, just before induction of labor. Bound and free CRH levels were determined in maternal blood concomitantly with cortisol, estriol, progesterone and SDHEA levels. Also paired fetal cord blood samples were collected. Results: Maternal plasmatic CRH level did not change after mifepristone absorption but free CRH increased significantly (0.500 ± 0.326 vs. 0.388 ± 0.303 ng/ml, p = 0.040). A significant decrease of progesterone was observed (83.6 ± 49.3 vs. 95.6 ± 54.9 ng/ml, p = 0.001) with a lower progesterone/estriol ratio (26.9 ± 15.7 vs. 40.7 ± 31.1, p = 0.004). There was a strong association between maternal and fetal free CRH (r 2 = 0.675, p = 0.001), cortisol (r 2 = 0.570, p = 0.019), and positive but modest correlation for progesterone (r 2 = 0.341, p = 0.046) and estriol (r 2 = 0.379, p = 0.025) levels. Conclusion: Mifepristone has an effect on free CRH level and changes the estriol-progesterone balance.</abstract><cop>Basel, Switzerland</cop><pub>Karger</pub><pmid>22759411</pmid><doi>10.1159/000338927</doi><tpages>4</tpages></addata></record>
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subjects Abortifacient Agents, Steroidal - pharmacology
Abortion, Therapeutic
Adrenal Cortex - drug effects
Adrenal Cortex - secretion
Adult
Algorithms
Biological and medical sciences
Bones, joints and connective tissue. Antiinflammatory agents
Corticotropin-Releasing Hormone - blood
Corticotropin-Releasing Hormone - metabolism
Corticotropin-Releasing Hormone - secretion
Dehydroepiandrosterone Sulfate - blood
Delivery. Postpartum. Lactation
Estriol - blood
Estriol - secretion
Female
Fetal Blood - metabolism
General aspects
Gynecology. Andrology. Obstetrics
Humans
Hydrocortisone - blood
Hydrocortisone - secretion
Medical sciences
Mifepristone - pharmacology
Original Paper
Paraventricular Hypothalamic Nucleus - drug effects
Paraventricular Hypothalamic Nucleus - secretion
Pharmacology. Drug treatments
Placenta - drug effects
Placenta - secretion
Pregnancy
Pregnancy Trimester, Third
Progesterone - blood
Progesterone - secretion
Receptors, Progesterone - antagonists & inhibitors
title Modulation of Free Corticotrophin-Releasing Hormone, Adrenal and Placental Steroid Hormone Levels Induced by Mifepristone during Pregnancy
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