Expression of syndecans, cell-cell interaction regulating heparan sulfate proteoglycans, within the human endometrium and their regulation throughout the menstrual cycle.
Fertil Steril 2006;
87:657-63. [PMID:
17123519 DOI:
10.1016/j.fertnstert.2006.07.1526]
[Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2006] [Revised: 07/19/2006] [Accepted: 07/19/2006] [Indexed: 11/24/2022]
Abstract
OBJECTIVE
To evaluate the expression of syndecan-1, -2, -3, and -4 in different phases of eutopic endometrium of normal cycling women.
DESIGN
Prospective observational study.
SETTING
University-based research center for reproductive medicine.
PATIENT(S)
Twenty-nine healthy ovulatory volunteers.
INTERVENTION(S)
mRNA and protein expression of syndecan-1 to -4 in human endometrium.
MAIN OUTCOME MEASURE(S)
Real-time polymerase chain reaction of syndecan members and further characterization of mRNA expression of syndecan-1 and -4 with multiprobe RNase protection assays of epithelial and stromal cells after purification with antibody-coated magnetic beads. For confirmation of results, protein expression and localization using immunohistochemistry for syndecan-1 and -4 was performed.
RESULT(S)
All syndecans were expressed within human endometrium. Syndecan-1 and -4 proved to be significantly upregulated in whole endometrium during the secretory phase (2.73-fold and 2.85-fold, respectively). Using multiprobe RNase protection assays, a significant upregulation of mRNA was noted in epithelial cells during the secretory phase for both syndecan-1 and -4 (7.46-fold and 2.52-fold, respectively) and confirmed by immunohistochemistry.
CONCLUSION(S)
Cycle-dependent expression of syndecan-1 and -4 suggests that these adhesion proteins are involved in the regulation of the cycling endometrium.
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