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Uterine and placental specific localization of AQP2 and AQP8 is related with changes of serum progesterone levels in pregnant queens

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Abstract

Aquaporins play vital roles in reproductive physiology. This study evaluates the expression and localization dynamics of AQP1, AQP2, AQP3 and AQP8 in the endometrium and placental transference zone during pregnancy in queens by means of immunohistochemistry and Western blot. Animals were distributed into six groups: non-pregnant queens with low levels of serum progesterone (P4), non-pregnant animals with high P4 levels, and queens at 30, 40, 50 and 60 days of pregnancy. All AQPs were present in glandular and luminal epithelia and myometrium. AQP1 was also present in the endometrial endothelia. AQP2, AQP3 and AQP8 were found in trophoblast. In endometrial samples with P4 above 2 ng/mL, AQP2 and AQP8 were distributed across plasma membrane and cytoplasm, whereas progesterone levels under 1 ng/mL kept both AQPs confined to the plasma membrane. Western blot showed no significant changes in AQPs expression among the stages. In conclusion, our results indicate that the distribution of AQP2 and AQP8 in the queen reproductive tract is related to P4 levels.

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APA

Ferré-Dolcet, L., Yeste, M., Vendrell, M., Rigau, T., Rodríguez-Gil, J. E., & del Alamo, M. M. R. (2020). Uterine and placental specific localization of AQP2 and AQP8 is related with changes of serum progesterone levels in pregnant queens. Theriogenology, 142, 149–157. https://doi.org/10.1016/j.theriogenology.2019.09.049

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