Volume 78, Issue 6 e12766
ORIGINAL ARTICLE

Successful treatment with intrauterine delivery of dexamethasone for repeated implantation failure

Tao Zhang

Tao Zhang

Shenzhen Key Laboratory of Reproductive Immunology for Peri-implantation, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China

Shenzhen Zhongshan Institute for Reproductive Medicine and Genetics, Shenzhen, China

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Chunyu Huang

Chunyu Huang

Shenzhen Key Laboratory of Reproductive Immunology for Peri-implantation, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China

Shenzhen Zhongshan Institute for Reproductive Medicine and Genetics, Shenzhen, China

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Yan Du

Yan Du

Office of Clinical Epidemiology, Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China

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Ruochun Lian

Ruochun Lian

Shenzhen Key Laboratory of Reproductive Immunology for Peri-implantation, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China

Shenzhen Zhongshan Institute for Reproductive Medicine and Genetics, Shenzhen, China

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Meilan Mo

Meilan Mo

Shenzhen Key Laboratory of Reproductive Immunology for Peri-implantation, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China

Shenzhen Zhongshan Institute for Reproductive Medicine and Genetics, Shenzhen, China

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Yong Zeng

Corresponding Author

Yong Zeng

Shenzhen Key Laboratory of Reproductive Immunology for Peri-implantation, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, China

Shenzhen Zhongshan Institute for Reproductive Medicine and Genetics, Shenzhen, China

Correspondence

Yong Zeng, Shenzhen Key Laboratory of Reproductive Immunology for Peri-implantation, Fertility Center, Shenzhen Zhongshan Urology Hospital, Shenzhen, Guangdong, China.

Email: [email protected]

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Gil Mor

Gil Mor

Division of Reproductive Sciences, Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, New Haven, CT, USA

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First published: 16 September 2017
Citations: 26

Abstract

Problem

Effective therapy for endometrial receptivity of patients with repeated embryo implantation failure (RIF) is far undeveloped. Whether intrauterine perfusion of dexamethasone (DXM), local administration of drugs with less systematic side-effects, benefit for embryo implantation by suppressing uterine NK (uNK) cells to improve endometrial receptivity remains unknown.

Method of study

Women with RIF were analyzed for the correlation between the percentage of uNK cells during implantation window and following clinical pregnancy rate to determine the appropriate range of uNK for embryo implantation. Women with RIF and extremely increased uNK cells were treated with transvaginal intrauterine perfusion of DXM. Quantification of uNK cells before and after this treatment was analyzed by immunohistochemistry staining for understanding potential underlying mechanism. Pregnancy outcome was evaluated for the efficiency and safety of this novel therapy.

Results

The clinical pregnancy rate was decreased if the percentage of uNK cells was higher than the 75th percentile (18.06%), which was considered as the cutoff value for increased uNK cells. All eight patients with increased uNK cells responded to DXM-induced decrease on uNK cells number, and seven got clinical pregnancy. Three delivered with a healthy baby at term without any pregnancy complication and three achieved an ongoing pregnancy, but one suffered from early miscarriage.

Conclusion

We report for the first time the beneficial effect of intrauterine perfusion of DXM for patients with RIF characterized by high number of uNK cells. The potential mechanism is downregulation of the proportion of uNK cells, which may improve endometrial receptivity and enhance embryo implantation.

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