alexa Interleukin (IL)-1 Beta and IL-6 Levels in Human Embryo Culture Supernatants and their Role in Implantation Following IVF: A Prospective, Non-randomized Study
ISSN 2476-1966

Journal of Immunobiology
Open Access

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Research Article

Interleukin (IL)-1 Beta and IL-6 Levels in Human Embryo Culture Supernatants and their Role in Implantation Following IVF: A Prospective, Non-randomized Study

Maria Biba1*, Theodora Keramitsoglou2, Dimitris Goukos3, Marigoula Varla-Leftherioti2, Konstantinos Pantos1, George Koumantakis4, Antonis Makrigiannakis5 and Ioannis E. Messinis6

1IVF Center, Genesis Athens Clinic, Athens, Greece

2Immunology-Histocompatibility Department, “Helena Venizelou” Maternity Hospital, Athens, Greece

3First Department of Propaedeutic Internal Medicine, School of Medical Sciences, Laikon General Hospital, Ethnikon and Kapodistriakon University, Athens, Greece

4Department of Obstetrics and Gynecology Aretaieion Hospital Athens, Greece

5Department of Obstetrics and Gynecology, Medical School, University of Crete, Heraklion, Greece

6Department of Obstetrics and Gynaecology, Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece

*Corresponding Author:
Maria Biba
1IVF Center, Genesis Athens Clinic
Athens, Greece
E-mail: [email protected], [email protected]

Received date: January 04, 2016; Accepted date: January 27, 2016; Published date: February 17, 2016

Citation: Biba M, Keramitsoglou T, Goukos D, Varla-Leftherioti M, Pantos K et al. (2016) Interleukin (IL)-1 Beta and IL-6 Levels in Human Embryo Culture Supernatants and their Role in Implantation Following IVF: A Prospective, Non-randomized Study. J Immuno Biol 1:105. doi: 10.4172/jib.1000105

Copyright: © 2016 Biba M, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Objective: Interleukin-1 beta (IL-1β) and Interleukin-6 (IL-6) are pro-inflammatory cytokines involved in the mother-embryo interaction during blastocyst adhesion and invasion into the endometrium. IL-1β is also considered as a first signal delivered from blastocyst to the endometrium to influence uterus receptivity. The aim of the present prospective, non-randomized study was to explore whether the measurement of IL-1β and IL-6 secretion by blastocysts could serve as a non-invasive method to predict blastocyst implantation competence following in vitro fertilization (IVF). Methods: IL-1β and IL-6 were measured in the supernatant culture media of 683 blastocysts transferred into 245 women following IVF cycles, and their levels were correlated with implantation and pregnancy rates per transfer. Measurements were performed using a Luminex 200 and commercially available interleukin kits. Statistical analyses were performed using GraphPad Prism 5 software, and a probability of p<0.05 was used to indicate a significant difference. Results: IL-1β was detected in 26.5% of the blastocyst supernatants (179/683), with a mean value 0.099 pg/ml, and IL-6 was detected in 20.35% of blastocysts (139/683), with a mean value of 0.046 pg/ml. Cytokine levels showed no correlation with blastocyst quality or developmental stage. The mean values of IL-1β and IL-6 in the implanted blastocysts were 0.073 and 0.036 pg/ml, respectively. In the non-implanted blastocysts, the corresponding values were 0.0141 and 0.060 pg/ml. The pregnancy and implantation rates in women with detectable IL-1β levels (pregnancy rate (PR): 56.3%; implantation rate (IR): 21.8%) and non-detectable IL-1β levels (PR: 60.23%; IR: 28.37%) and in women with detectable IL-6 levels (PR: 58%; IR: 25%) and non-detectable IL-6 levels (PR: 59.5%; IR: 26.83%) were not significantly different. Conclusion: Blastocysts secrete IL-1β, and to a lesser extent, IL-6. No significant differences in implantation or pregnancy outcomes were identified between patients with detectable and undetectable IL-1β and IL-6 levels. Therefore, the non-invasive measurement of IL-1β and IL-6 secreted by blastocysts prior to transfer should not be considered a useful biomarker of blastocyst development and implantation competence.

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