The influence of reproductively significant autoantibodies determined in the follicular fluid on the quality of the obtained oocytes and embryos, as well as on the implantation rate in assisted reproductive technology cycles

Abstract

BACKGROUND: According to reports, the efficiency of in vitro fertilization and intra cytoplasmic sperm injection protocols is decreased in patients positive for various autoantibodies, as opposed to autoantibody negative patients. However, there are contradictory data indicating no autoantibody effect on the outcome of infertility treatment using assisted reproductive technology.

AIM: The aim of this study was to evaluate the embryological outcome and clinical efficiency of infertility treatment in in vitro fertilization and intra cytoplasmic sperm injection protocols in women in the presence of reproductively significant autoantibodies.

MATERIALS AND METHODS: This prospective study enrolled 90 infertile patients undergoing assisted reproductive technology treatment. The follicular fluid obtained on the day of oocyte retrieval was evaluated for a wide autoantibody panel using commercial ELISA kits. The main group (n = 52) included women with autoantibody levels determined in the follicular fluid of more than three standard deviations from the mean values determined among all patients. The comparison group consisted of 38 women with autoantibody levels of less than three standard deviations from all subjects. The intergroup comparative analysis included clinical and anamnestic data, hormonal parameters, ovarian reserve, embryological data, and in vitro fertilization and intra cytoplasmic sperm injection efficiency.

RESULTS: Reliably lower ovarian reserve parameters (anti-Mullerian hormone levels 1.9 (1.4; 4.0) vs. 3.3 (2.2; 6.5) ng/ml; p = 0.005; number of antral follicles 8.5 (6.0; 12.0) vs. 11.0 (9.0; 17.0); p = 0.003) have been noted in the main group relatively to the comparison group. The autoantibodies to thyroid peroxidase and cardiolipin content in the follicular fluid has been shown to be negatively associated with the number of two-pronuclear zygotes, the presence of autoantibodies to aromatase correlating negatively with the fertilization rate. Furthermore, the follicular fluid levels of autoantibodies to thyroid peroxidase (≥105 IU/ml) and cardiolipin (≥5.1 IU/ml) are reliably associated with a higher frequency of a suboptimal response to previous controlled ovarian stimulation, a lower incidence of high quality embryos on days 3 and 4 of in vitro cultivation, a decreased number of top-quality blastocysts, and the clinical efficiency of in vitro fertilization and intra cytoplasmic sperm injection programs.

CONCLUSIONS: The presence of reproductively significant autoantibodies is an independent risk factor for reducing the total efficiency of assisted reproductive technology treatment.

Keywords

autoantibodies / autoantibodies to thyroid peroxidase / autoantibodies to cardiolipin / autoantibodies to aromatase / in vitro fertilization and intra cytoplasmic sperm injection / embryos / clinical pregnancy

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