Aberrant expressions of endometrial Id3 and CTLA-4 are associated with unexplained repeated implantation failure and recurrent miscarriage.

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Aberrant expressions of endometrial Id3 and CTLA-4 are associated with unexplained repeated implantation failure and recurrent miscarriage.

Am J Reprod Immunol. 2017 Feb 21;:

Authors: Ding JL, Diao LH, Yin TL, Huang CY, Yin B, Chen C, Zhang Y, Li J, Cheng YX, Zeng Y, Yang J

Abstract
Inhibitor of DNA-binding protein 3 (Id3) is required for tumor angiogenesis and regulatory T-cell generation. However, the involvement of Id3 in unexplained repeated implantation failure (RIF) and recurrent miscarriage (RM) remains poorly understood. Immunohistochemistry was used to identify Id3, CD34, CTLA-4, and FOXP3 in the endometrium taken from the women with RIF (n=16), RM (n=16) and matched controls (n=8). The images were acquired and analyzed by the Vectra(®) automated quantitative pathology imaging system. Percentage of Id3(+) cells was significantly higher in the endometrium of women with RIF and RM compared with controls. The numbers of Id3(+) and CD34(+) vessels in the endometrium were positively correlated in control but not in RIF or RM. Percentages of CTLA-4(+) cells, but not FOXP3(+) cells, were significantly increased in the endometrium of RIF and RM women than those in controls. We found aberrant expressions of endometrial Id3 and CTLA-4 in peri-implantation endometrium of women with RIF and RM, suggesting the negative roles of these angiogenesis and immune tolerance markers involving in regulating endometrium receptivity.

PMID: 28224680 [PubMed - as supplied by publisher]

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