Bookcover of Effects of dexamethasone on glucocorticoid receptors in ovine placenta
Booktitle:

Effects of dexamethasone on glucocorticoid receptors in ovine placenta

Südwestdeutscher Verlag für Hochschulschriften (2016-04-08 )

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ISBN-13:

978-3-8381-5229-5

ISBN-10:
3838152298
EAN:
9783838152295
Book language:
English
Blurb/Shorttext:
this study for the first time demonstrated the presence of three different GRα-BNC-subtypes in sheep placenta. The number of GRα BNCs was regulated by early DEX treatment and this effect was long lasting and sex-, subtype-, placentome-subtype- and level-dependent. Early in pregnancy, DEX may reduce the function of BNCs via increased proportion of “inactive” BNC compared to controls. Apoptosis may play an important role in the conversion among the three BNC-subtypes. This is supported by co-localisation studies with caspase-3, oPL and GRα. Late in pregnancy, early DEX treatment resulted in an increased mean percentage of “active” BNC and decreased the mean percentage of “inactive/intermediate” BNC compared to controls, suggesting that early DEX treatment possibly reduces the sensitivity of GRα in BNCs to the natural rise of fetal cortisol levels near term. While in female fetuses a constant placental GC sensitivity is maintained, possibly in terms of a preferential survival strategy for ensuring reproductive capacity and species conservation, it seems that in male fetuses, due to increased GC exposure, the placenta becomes at least temporarily GC-resistant.
Publishing house:
Südwestdeutscher Verlag für Hochschulschriften
Website:
https://www.svh-verlag.de
By (author) :
Hongkai Shang
Number of pages:
108
Published at:
2016-04-08
Stock:
Available
Category:
Medicine
Price:
59.90 €
Keywords:
dexamethasone, glucocorticoid receptors, ovine, placenta

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