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Estrogen Modulates Glycerol Permeability in Sertoli Cells through Downregulation of Aquaporin-9

Title
Estrogen Modulates Glycerol Permeability in Sertoli Cells through Downregulation of Aquaporin-9
Type
Article in International Scientific Journal
Year
2018
Authors
Bernardino, RL
(Author)
Other
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Carrageta, DE
(Author)
Other
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Silva, AM
(Author)
Other
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Calamita, G
(Author)
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Alves, MG
(Author)
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Soveral, G
(Author)
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Journal
Title: CellsImported from Authenticus Search for Journal Publications
Vol. 7
ISSN: 2073-4409
Publisher: MDPI
Other information
Authenticus ID: P-00P-V5Z
Abstract (EN): High 17 beta-Estradiol (E2) levels are known to cause alterations of spermatogenesis and environments throughout the male reproductive tract. Sertoli cells (SCs) ensure an adequate environment inside the seminiferous tubule. Glycerol stands as essential for the maintenance of blood-testis barrier created by SCs, however, the role of E2 in this process is not known. Herein, we hypothesized that the effect of E2 on glycerol permeability in mouse SCs (mSCs) could be mediated by aquaglyceroporins. The expression of aquaglyceroporins was assessed by RT-PCR and qRT-PCR. Glycerol permeability was evaluated by stopped-flow light scattering. We were able to identify the expression of AQP3 and AQP9 in mSCs where AQP9 is more abundant than AQP3. Our results show that high E2 levels decrease AQP9 mRNA abundance with no influence on AQP3 in mSCs. Interestingly, high E2 levels decreased mSCs' permeability to glycerol, while downregulating AQP9 expression, thus suggesting a novel mechanism by which E2 modulates fluid secretion in the testis. In conclusion, E2 is an important regulator of mSCs physiology and secretion through changes in AQP9 expression and function. Thus, alterations in glycerol permeability induced by E2 may be the cause for male infertility in cases associated with the presence of high E2 levels.
Language: English
Type (Professor's evaluation): Scientific
No. of pages: 12
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