Abstract
Endometrial remodeling is important for successful embryo development and implantation in pigs. Therefore, this study investigated change of proteins regulating endometrial remodeling on follicular and luteal phase in porcine endometrial tissues. The endometrial tissue samples were collected from porcine uterus during follicular and luteal phase, vascular endothelial growth factor (VEGF), myoglobin and cysteine-rich protein 2 (CRP2) proteins were expressed by immnofluorescence, immunoblotting, and determined by 2-DE and MALDI-TOF/MS. We found that VEGF, myoglobin and CRP2 were strongly localized in endometrial tissues during luteal phase, but not follicular phase. The protein levels of VEGF, myoglobin and CRP2 in endometrial tissues were higher than luteal phase (P<0.05). These results may provide understanding of intrauterine environment during estrous cycle in pigs, and will be used in animal reproduction for developing specific biomarkers in the future.
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