Abstract
Purpose
The objective of this study was to analyze the expression of the glucocorticoid receptor (GR) subtypes GRα and GRβ in placentas affected by intrauterine growth restriction (IUGR).
Methods
We analyzed the sex-specific placental expression of GRα and GRβ in 23 IUGR and 40 control placentas using immunohistochemistry and immunofluorescence. The GR gene, also known as nuclear receptor subfamily 3 group C member 1 (NR3C1), mRNA production in trophoblast-like cell line BeWo after stimulation with prednisolone was analyzed using quantitative polymerase chain reaction (qPCR) and on the protein level using western blot analysis.
Results
GR subtypes showed a sex-specific upregulation in placentas from IUGR compared to control placentas. An increased expression of GRα was detectable in female placental tissue, whereas GRβ was increased in males.
Conclusion
Our data support previous findings suggesting that the glucocorticoid metabolism plays a role in the pathophysiology of IUGR. Furthermore, the data suggest that the underlying molecular mechanisms differ between male and female cases.
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Funding
This study was supported by the “Friedrich Baur Stiftung” for S.H. and by the Department of Obstetrics and Gynecology of the LMU Munich.
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UA: data analysis. PA: protocol/project development. PH: data analysis, manuscript writing/editing. SH: data collection or management. SH: protocol/project development, manuscript writing/editing. UJ: protocol/project development, manuscript writing/editing. CK: data collection or management. SM: data analysis. DM: other (contributed reagents/materials/analysis tools). JM: data collection or management, data analysis, manuscript writing/editing. VO: data analysis. MES: data analysis.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors.
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Hutter, S., Hepp, P., Hofmann, S. et al. Glucocorticoid receptors α and β are modulated sex specifically in human placentas of intrauterine growth restriction (IUGR). Arch Gynecol Obstet 300, 323–335 (2019). https://doi.org/10.1007/s00404-019-05189-7
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DOI: https://doi.org/10.1007/s00404-019-05189-7