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Piqueras P, Gallardo M, Hebles M, Jiménez JM, Migueles B, Montero L, Sánchez-Martín F, Sánchez-Martín P. Live birth after replacement of an embryo obtained from a spontaneously in vitro matured metaphase-I oocyte. Syst Biol Reprod Med 2017; 63:209-211. [PMID: 28306344 DOI: 10.1080/19396368.2017.1285371] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
This case report describes a live birth after the fresh replacement of an embryo obtained from a spontaneously in vitro matured oocyte. The patient was subjected to controlled ovarian stimulation for IVF treatment, obtaining two oocytes. One was found to be immature at the time of denudation, at metaphase-I. This immature oocyte was kept in culture overnight in standard conditions along with the second oocyte - which was mature but failed to fertilize - spontaneously achieving metaphase-II, and was subjected to ICSI. The resulting embryo was replaced on the second day of development, producing a pregnancy that resulted in a healthy live birth. Post-denudation in vitro maturation could be considered as a tool to improve reproductive outcomes in selected patients, such as poor responders.
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Machtinger R, Duvdevani NR, Lebovitz O, Dor J, Hourvitz A, Orvieto R. Outcome of gestational surrogacy according to IVF protocol. J Assist Reprod Genet 2017; 34:445-449. [PMID: 28181050 DOI: 10.1007/s10815-017-0877-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 01/18/2017] [Indexed: 01/30/2023] Open
Abstract
PURPOSE Surrogacy remains the only option for having a biologic child for a unique population of women with severe medical conditions. However, no study has looked at surrogacy outcome as a result of the type of ovarian stimulation of the intended mother [controlled ovarian stimulation (COH), modified natural cycle (MNC), and in vitro maturation (IVM)] for oocyte retrieval. METHODS This is a retrospective study, including all intended mothers and gestational carriers in a tertiary, university affiliated, medical center, from 1998 to 2016. RESULTS Fifty-two women underwent 252 oocyte retrieval cycles. The pregnancy outcome of 212 embryo transfer cycles (64 gestational carriers) was reviewed according to the origin of the embryo. The number of retrieved oocytes was significantly higher following COH (n = 132) compared with IVM (n = 58) and MNC cycles (n = 62) (p = 0.013 and p < 0.0001, respectively). Pregnancy rates for embryos transferred according to each protocol were similar. All pregnancies that ended in live births when oocytes from IVM cycles were used derived from transfers of retrieved mature and mixed mature and immature oocytes. Pregnancies that involved embryos derived solely from immature oocytes that further matured in vitro and were transferred to gestational carriers were unsuccessful. CONCLUSIONS MNC protocol is a good option to achieve pregnancy for intended mothers using gestational surrogacy who have contraindications to COH. The yield of IVM cycles in which immature oocytes are retrieved is inconclusive.
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Affiliation(s)
- Ronit Machtinger
- In Vitro Fertilization Unit, Department of Obstetrics and Gynecology, Chaim Sheba Medical Center, Tel Hashomer, Israel. .,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Nir-Ram Duvdevani
- In Vitro Fertilization Unit, Department of Obstetrics and Gynecology, Chaim Sheba Medical Center, Tel Hashomer, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Oshrit Lebovitz
- In Vitro Fertilization Unit, Department of Obstetrics and Gynecology, Chaim Sheba Medical Center, Tel Hashomer, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Jehoshua Dor
- In Vitro Fertilization Unit, Department of Obstetrics and Gynecology, Chaim Sheba Medical Center, Tel Hashomer, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ariel Hourvitz
- In Vitro Fertilization Unit, Department of Obstetrics and Gynecology, Chaim Sheba Medical Center, Tel Hashomer, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Raoul Orvieto
- In Vitro Fertilization Unit, Department of Obstetrics and Gynecology, Chaim Sheba Medical Center, Tel Hashomer, Israel.,Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
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Creux H, Monnier P, Son WY, Tulandi T, Buckett W. Immature oocyte retrieval and in vitro oocyte maturation at different phases of the menstrual cycle in women with cancer who require urgent gonadotoxic treatment. Fertil Steril 2017; 107:198-204. [DOI: 10.1016/j.fertnstert.2016.09.041] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 09/07/2016] [Accepted: 09/22/2016] [Indexed: 11/16/2022]
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De Vos M, Smitz J, Thompson JG, Gilchrist RB. The definition of IVM is clear—variations need defining. Hum Reprod 2016; 31:2411-2415. [DOI: 10.1093/humrep/dew208] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 07/04/2016] [Accepted: 07/08/2016] [Indexed: 12/25/2022] Open
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