Journal
AMERICAN JOURNAL OF REPRODUCTIVE IMMUNOLOGY
Volume 52, Issue 1, Pages 53-59Publisher
BLACKWELL MUNKSGAARD
DOI: 10.1111/j.1600-0897.2004.00182.x
Keywords
mouse; perlecan; pregnancy; proteoglycans; syndecan; uterus
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PROBLEM: During early pregnancy in mice, there is recruitment of specific immune cells, remodeling of the endometrium, cell differentiation and synthesis of new molecules. METHOD OF STUDY: Immunohistochemistry was used to determine the distribution of perlecan and syndecan-4 in the uteri before and after embryo implantation. RESULTS: During pre-implantation, perlecan was identified in basement membranes and extracellular spaces of the endometrial stroma. In contrast, expression of syndecan-4 was quite weak. In the peri-implantation period, perlecan remained in the basement membranes, and it was no longer observed in the stroma and it was identified in the embryonic cells. On day 4 of pregnancy, syndecan-4 increased in the fibroblasts of the subepithelial stroma. After implantation, syndecan-4 was pronounced in pre-decidual and mature decidual cells. CONCLUSIONS: The coordinate balance between the pre- and post-implantation periods suggests a role of these two molecules in the adaptive modification of the uterine microenvironment to receive and implant the embryo.
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