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Int. J. Environ. Res. Public Health 2015, 12(9), 10352-10361; doi:10.3390/ijerph120910352

Thyroid Autoimmunity is Associated with Decreased Cytotoxicity T Cells in Women with Repeated Implantation Failure

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Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen 518045, China
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Shenzhen Key Laboratory of Reproductive Immunology for Peri-implantation, Shenzhen 518045, China
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Shenzhen Zhongshan Institute for Reproductive Medicine and Genetics, Shenzhen 518045, China
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Author to whom correspondence should be addressed.
Academic Editor: Paul B. Tchounwou
Received: 18 July 2015 / Revised: 12 August 2015 / Accepted: 13 August 2015 / Published: 25 August 2015
View Full-Text   |   Download PDF [787 KB, uploaded 25 August 2015]   |  

Abstract

Thyroid autoimmunity (TAI), which is defined as the presence of autoantibodies against thyroid peroxidase (TPO) and/or thyroglobulin (TG), is related to repeated implantation failure (RIF). It is reported that TAI was involved in reproductive failure not only through leading thyroid function abnormality, but it can also be accompanied with immune imbalance. Therefore, this study was designed to investigate the association of thyroid function, immune status and TAI in women with RIF. Blood samples were drawn from 72 women with RIF to evaluate the prevalence of TAI, the thyroid function, the absolute numbers and percentages of lymphocytes. The prevalence of thyroid function abnormality in RIF women with TAI was not significantly different from that in RIF women without TAI (c2 = 0.484, p > 0.05). The absolute number and percentage of T cells, T helper (Th) cells, B cells and natural killer (NK) cells were not significantly different in RIF women with TAI compared to those without TAI (all p > 0.05). The percentage of T cytotoxicity (Tc) cells was significantly decreased in RIF women with TAI compared to those without TAI (p < 0.05). Meanwhile, Th/Tc ratio was significantly increased (p < 0.05). These results indicated that the decreased Tc percentage and increased Th/Tc ratio may be another influential factor of adverse pregnancy outcomes in RIF women with TAI. View Full-Text
Keywords: infertility; repeated implantation failure; thyroid autoimmunity; lymphocytes infertility; repeated implantation failure; thyroid autoimmunity; lymphocytes
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Huang, C.; Liang, P.; Diao, L.; Liu, C.; Chen, X.; Li, G.; Chen, C.; Zeng, Y. Thyroid Autoimmunity is Associated with Decreased Cytotoxicity T Cells in Women with Repeated Implantation Failure. Int. J. Environ. Res. Public Health 2015, 12, 10352-10361.

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