receptor (PTGER2) activation on growth factor expression and cell proliferation in bovine endometrial explants.

receptors (PTGER2) is present in endometrium and its increased expression accompanies with endometrial growth in above processes. However, the association between PTGER2 and endometrial growth remains unclear. Endometrial growth factors and cell proliferation is the foundation for endometrial growth. Therefore, in this study, the response of growth factors and cell proliferation essential for endometrial growth to PTGER2 activation were investigated in bovine endometrium. The results indicated that mRNA and protein expression of connective tissue growth factor (CTGF), fibroblast growth factor-2 (FGF-2), interleukin-8 (IL-8), transforming growth factor-β1 (TGF-β1), matrix metalloproteinase-2 (MMP-2), and vascular endothelial growth factor A (VEGFA) were up-regulated after PTGER2 activation by corresponding agonist butaprost (P < 0.05), and proliferation of endometrial epithelia and fibroblasts were induced in response to increased levels of proliferating cell nuclear antigen (PCNA), cytokeratin-18 (CK-18) and fibroblast-specific protein 1 (FSP-1) expression in bovine endometrial explants in vitro (P < 0.05).

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