TY  - JOUR
A1  - Fritzsche, Britta
A1  - Schuchardt, Jan-Philipp
A1  - Schmidt, Anja
A1  - Nau, Heinz
A1  - Schweigert, Florian J.
A1  - Ruehl, Ralph
T1  - CYP26A1-specific antagonist influence on embryonic implantation, gene expression and endogenous retinoid concentration in rats
N2  - Retinoids are essential in vertebrate reproduction and embryonic development. All-trans-retinoic acid (ATRA) is tightly regulated during these processes. CYP26A1 is mainly responsible for its degradation. To study the role of CYP26A1 during implantation, we applied R115866, a CYP26A1-specific antagonist, to rats during early gestation days (GD). On GD 6.5 and 12 samples were collected and the number of embryos was evaluated. ATRA concentration increased in uterus and serum, mRNA expression of CYP26A1 and CRABP2 increased in the liver, but not in the uterus. Uterine COX1 and 17 beta HSD mRNA expression was decreased. The number of embryos on GD 12 was not altered in this setting. It can be concluded that uterine expression of the analyzed retinoid-response genes during early gestation is not altered by this R115866 treatment and instead indirectly via ATRA. From our experiment we cannot confirm that ATRA obtains a major influencing role in the regulation of embryonic implantation.
Y1  - 2010
UR  - http://www.sciencedirect.com/science/journal/08906238
U6  - https://doi.org/10.1016/j.reprotox.2010.05.005
SN  - 0890-6238
ER  -