Changes in placental progesterone receptors in term and preterm labour
| Autor: | Yefei Pang, Mariann Rand-Weaver, Elena Zachariades, Dionisis Mparmpakas, Emmanouil Karteris, Peter Thomas |
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| Rok vydání: | 2012 |
| Předmět: |
Agonist
medicine.medical_specialty medicine.drug_class Placenta medicine.medical_treatment Interleukin-1beta Gestational Age Biology Cell Line Proinflammatory cytokine Uterine Contraction Obstetric Labor Premature Pregnancy Internal medicine medicine Humans Receptor PGRMC1 reproductive and urinary physiology Fetus Labor Obstetric Membrane Proteins Obstetrics and Gynecology Membrane progesterone receptor Endocrinology medicine.anatomical_structure Cytokine Reproductive Medicine Cytokines Female Receptors Progesterone Developmental Biology |
| Zdroj: | Placenta. 33:367-372 |
| ISSN: | 0143-4004 |
| DOI: | 10.1016/j.placenta.2012.01.002 |
| Popis: | Currently, preterm labour is associated with increased fetal mortality and morbidity and is often associated with elevated levels of inflammatory cytokines. However, the exact mechanisms that lead to this pathology are not fully elucidated. In the present study evidence was obtained using a specific membrane progesterone receptor (mPR) agonist, Org OD 02-0, that the progestin antagonism of apoptotic effects of a cytokine, IL-1β, on human placental BeWo cells is mediated through mPRs. Therefore the aim of this study was to determine whether the gene expression of mPRs and all other known progesterone receptors changes in human placentas at term and during labour. Quantitative PCR (qPCR) in clinical samples revealed a 2.8 fold decrease of mPRβ in labouring comparing to non-labouring tissues and 4.6 fold higher levels of mPRγ in preterm mPRγ compared to term placentas. The ratio of mPRα to PR-B was increased in term compared to preterm samples, whereas it was decreased in labour compared to non-labour placentas. There was also a high correlation between mPRα and PGRMC1 expression irrespective of pathologies. Collectively, our data indicates that changes in the ratios of progesterone receptors rather than individual fluctuations might affect progesterone signalling at the placental level. |
| Databáze: | OpenAIRE |
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