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Fluks M, Collier R, Walewska A, Bruce AW, Ajduk A. How great thou ART: biomechanical properties of oocytes and embryos as indicators of quality in assisted reproductive technologies. Front Cell Dev Biol 2024; 12:1342905. [PMID: 38425501 PMCID: PMC10902081 DOI: 10.3389/fcell.2024.1342905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Accepted: 02/01/2024] [Indexed: 03/02/2024] Open
Abstract
Assisted Reproductive Technologies (ART) have revolutionized infertility treatment and animal breeding, but their success largely depends on selecting high-quality oocytes for fertilization and embryos for transfer. During preimplantation development, embryos undergo complex morphogenetic processes, such as compaction and cavitation, driven by cellular forces dependent on cytoskeletal dynamics and cell-cell interactions. These processes are pivotal in dictating an embryo's capacity to implant and progress to full-term development. Hence, a comprehensive grasp of the biomechanical attributes characterizing healthy oocytes and embryos is essential for selecting those with higher developmental potential. Various noninvasive techniques have emerged as valuable tools for assessing biomechanical properties without disturbing the oocyte or embryo physiological state, including morphokinetics, analysis of cytoplasmic movement velocity, or quantification of cortical tension and elasticity using microaspiration. By shedding light on the cytoskeletal processes involved in chromosome segregation, cytokinesis, cellular trafficking, and cell adhesion, underlying oogenesis, and embryonic development, this review explores the significance of embryo biomechanics in ART and its potential implications for improving clinical IVF outcomes, offering valuable insights and research directions to enhance oocyte and embryo selection procedures.
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Affiliation(s)
- Monika Fluks
- Department of Embryology, Institute of Developmental Biology and Biomedical Sciences, Faculty of Biology, University of Warsaw, Warsaw, Poland
- Department of Molecular Biology and Genetics, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
| | - Rebecca Collier
- Department of Molecular Biology and Genetics, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
| | - Agnieszka Walewska
- Department of Embryology, Institute of Developmental Biology and Biomedical Sciences, Faculty of Biology, University of Warsaw, Warsaw, Poland
| | - Alexander W. Bruce
- Department of Molecular Biology and Genetics, Faculty of Science, University of South Bohemia in České Budějovice, České Budějovice, Czechia
| | - Anna Ajduk
- Department of Embryology, Institute of Developmental Biology and Biomedical Sciences, Faculty of Biology, University of Warsaw, Warsaw, Poland
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Khunmanee S, Yoo J, Lee JR, Lee J, Park H. Thiol-yne click crosslink hyaluronic acid/chitosan hydrogel for three-dimensional in vitro follicle development. Mater Today Bio 2023; 23:100867. [PMID: 38179228 PMCID: PMC10765241 DOI: 10.1016/j.mtbio.2023.100867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 11/09/2023] [Accepted: 11/14/2023] [Indexed: 01/06/2024] Open
Abstract
There is a great deal of potential for in vitro follicle growth to provide an alternative approach to fertility preservation. This strategy reduces the possibility of cancer cells re-exposure after transplantation, and it does not require hormone stimulation. Adopting a three-dimensional (3D) culture method helps preserve the architecture of the follicle and promotes the maturity of oocytes. In order to maintain follicle morphology, enhance the quality of mature oocytes, and facilitate meiotic spindle assembly, the current work aimed to develop the 3D in vitro preantral mouse follicle culture method. Thiolated chitosan-co-thiolated hyaluronic (CSHS) hydrogel was designed to evaluate the effects of biomaterials on ovarian follicle development. Isolated follicles from mouse ovaries were randomly divided into alginate (Alg) as a 3D control, thiolated hyaluronic acid (HASH), and CSHS groups. Single follicle was encapsulated in each hydrogel, and performed for 10 days and subsequently ovulated to retrieve mature oocytes on day 11. CSHS hydrogel promoted follicle survival and oocyte viability with maintained spherical morphology of follicle. Matured oocytes with normal appearance of meiotic spindle and chromosome alignment were higher in the CSHS group compared with those in the Alg and HASH groups. Furthermore, CSHS increased expression level of folliculogenesis genes (TGFβ-1, GDF-9) and endocrine-related genes (LHCGR, and FSHR). With various experimental setups and clinical applications, this platform could be applied as an alternative method to in vitro follicle culture with different experimental designs and clinical applications in the long-term period.
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Affiliation(s)
- Sureerat Khunmanee
- Department of Integrative Engineering, Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, 06974, Republic of Korea
| | - Jungyoung Yoo
- Department of Biomedical Laboratory Science, Eulji University, Gyeonggi-do, 13135, Republic of Korea
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea
| | - Jung Ryeol Lee
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, 13620, Republic of Korea
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, 03080, Republic of Korea
| | - Jaewang Lee
- Department of Biomedical Laboratory Science, Eulji University, Gyeonggi-do, 13135, Republic of Korea
| | - Hansoo Park
- Department of Integrative Engineering, Chung-Ang University, 221 Heukseok-Dong, Dongjak-Gu, Seoul, 06974, Republic of Korea
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3
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The Effect of In Vitro Maturation (IVM) Protocol Changes on Measures of Oocyte/Embryo Competence. REPRODUCTIVE MEDICINE 2023. [DOI: 10.3390/reprodmed4010008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023] Open
Abstract
Purpose: In vitro maturation (IVM) continues its evolution as new ideas are introduced with the objective of making the IVM procedure easier and more effective. This study combines ideas believed likely to improve the IVM outcome or make the IVM oocyte identification process easier. Methods: A cohort of 45 women underwent an IVM cycle in which letrozole was used with the theoretical objective of improving the competence of small antral follicles, the oocyte aspiration technique was modified to minimize the time between oocyte aspiration and oocyte identification, and blastocysts were transferred during a subsequent cycle with controlled endometrial development. Results: Measures of oocyte competence used for these prospectively followed cycles were as follows: the maturation rate was 90.5%, the fertilization rate was 92.4%, the cleavage rate was 94.6%, the usable blastulation rate per zygote was 50.2%, and the implantation rate was 34.2%. Per transfer, the biochemical pregnancy rate was 63.2%, the clinical pregnancy rate was 55.3% and the ongoing/delivered pregnancy rate at the end of the first trimester was 47.4%. The miscarriage rate for clinical pregnancies in the first trimester was 14.3% and the ongoing twinning rate was 11.1%.
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Luchetti CG, Lorenzo MS, Elia EM, Teplitz GM, Cruzans PR, Carou MC, Lombardo DM. Effects of the addition of insulin-transferrin-selenium (ITS) and/or metformin to the in vitro maturation of porcine oocytes on cytoplasmic maturation and embryo development. Reprod Fertil Dev 2023; 35:363-374. [PMID: 36780707 DOI: 10.1071/rd22254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 01/21/2023] [Indexed: 02/15/2023] Open
Abstract
CONTEXT One of the main problems of porcine in vitro maturation (IVM) is incomplete cytoplasmatic maturation. Nuclear and cytoplasmic maturation will determine the future success of fertilisation and embryo development. Insulin-transferrin-selenium (ITS) has insulin-like and antioxidant effects, and metformin (M) is an insulin-sensitiser and antioxidant drug. AIMS To assess the effects of adding ITS and/or M in porcine IVM media on cytoplasmic maturation and early embryo development. METHODS Cumulus -oocyte complexes (COC) were IVM with M (10-4 M), ITS (0.1% v/v), M+ITS or no adding (Control). KEY RESULTS ITS increased glucose consumption compared to Control and M (P <0.01), and M+ITS did not differ from ITS or Control. Redox balance: M, ITS and M+ITS increased glutathione (P <0.01) and decreased lipid peroxidation (P <0.005). The viability of cumulus cells by flow cytometry increased with M (P <0.005) and decreased with ITS (P <0.001); M+ITS did not differ from Control. After IVF, M increased penetration and decreased male pronucleus (P <0.05). Embryo development: cleavage increased with M (P <0.05), and blastocysts increased with ITS and M+ITS (P <0.05). The number of blastocyst cells increased with ITS (P <0.05). CONCLUSIONS Adding ITS and M+ITS to porcine IVM media benefits embryo development to blastocysts, but ITS alone has better effects than M+ITS. IMPLICATIONS ITS is an excellent tool to improve IVM and embryo development after IVF in pigs.
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Affiliation(s)
- Carolina Griselda Luchetti
- Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal, Cátedra de Histología y Embriología, Chorroarín 280, Buenos Aires C1427CWO, Argentina; and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, Buenos Aires C1425FQD, Argentina
| | - María Soledad Lorenzo
- Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal, Cátedra de Histología y Embriología, Chorroarín 280, Buenos Aires C1427CWO, Argentina; and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, Buenos Aires C1425FQD, Argentina
| | - Evelin Mariel Elia
- Universidad de Buenos Aires (UBA), Facultad de Ciencias Exactas y Naturales (FCEN), Intendente Güiraldes 2160, Ciudad Universitaria, Buenos Aires C1428EGA, Argentina; and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)-UBA- Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE), Buenos Aires, Argentina; and UBA, FCEN, Departamento de Biodiversidad y Biología Experimental, Buenos Aires, Argentina
| | - Gabriela Maia Teplitz
- Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal, Cátedra de Histología y Embriología, Chorroarín 280, Buenos Aires C1427CWO, Argentina; and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, Buenos Aires C1425FQD, Argentina
| | - Paula Romina Cruzans
- Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal, Cátedra de Histología y Embriología, Chorroarín 280, Buenos Aires C1427CWO, Argentina; and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, Buenos Aires C1425FQD, Argentina
| | - María Clara Carou
- Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal, Cátedra de Histología y Embriología, Chorroarín 280, Buenos Aires C1427CWO, Argentina
| | - Daniel Marcelo Lombardo
- Universidad de Buenos Aires, Facultad de Ciencias Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal, Cátedra de Histología y Embriología, Chorroarín 280, Buenos Aires C1427CWO, Argentina; and Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Godoy Cruz 2290, Buenos Aires C1425FQD, Argentina
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Liu Q, Chen X, Qiao J. Advances in studying human gametogenesis and embryonic development in China. Biol Reprod 2022; 107:12-26. [PMID: 35788258 DOI: 10.1093/biolre/ioac134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 05/21/2022] [Accepted: 06/20/2022] [Indexed: 11/12/2022] Open
Abstract
Reproductive medicine in China has developed rapidly since 1988 due to the support from the government and scientific exploration. However, the success rate of assisted reproduction technology (ART) is around 30-40% and many unknown "black boxes" in gametogenesis and embryo development are still present. With the development of single-cell and low-input sequencing technologies, the network of transcriptome and epigenetic regulation (DNA methylation, chromatin accessibility, and histone modifications) during the development of human primordial germ cells (PGCs), gametes and embryos has been investigated in depth. Furthermore, pre-implantation genetic testing (PGT) has also rapidly developed. In this review, we summarize and analyze China's outstanding progress in these fields.
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Affiliation(s)
- Qiang Liu
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China.,National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China.,Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
| | - Xi Chen
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China.,National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China.,Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China
| | - Jie Qiao
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China.,National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China.,Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing, China.,Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, China.,Beijing Advanced Innovation Center for Genomics, Beijing, China.,Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.,Research Units of Comprehensive Diagnosis and Treatment of Oocyte Maturation Arrest, Chinese Academy of Medical Sciences, Beijing, China
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Mohsenzadeh M, Khalili MA, Anbari F, Vatanparast M. High efficiency of homemade culture medium supplemented with GDF9-β in human oocytes for rescue in vitro maturation. Clin Exp Reprod Med 2022; 49:149-158. [PMID: 35698778 PMCID: PMC9184876 DOI: 10.5653/cerm.2021.05050] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 03/07/2022] [Indexed: 11/30/2022] Open
Abstract
Objective Optimizing culture media for the incubation of immature oocytes is a vital strategy to increase the oocyte maturation rate during in vitro maturation (IVM) programs. This study evaluated the IVM and fertilization rates of human germinal vesicle (GV) and metaphase I (MI) oocytes using two different maturation media (commercial and homemade) with or without growth differentiation factor 9-β (GDF9-β). supplementation. Methods Immature oocytes from intracytoplasmic sperm injection (ICSI) cycles were collected and assigned to one of two IVM culture media (commercial or homemade; cleavage-stage base). After maturation, MII oocytes were examined under an inverted microscope for the presence of the polar body, zona pellucida (ZP) birefringence, and meiotic spindle (MS) visualization after maturation in four conditions (commercial or homemade medium, with or without GDF9-β. ICSI was done for matured oocytes, and fertilization was confirmed by the visualization of two distinct pronuclei and two polar bodies. Results No significant differences were found between the two culture media in terms of the time and rate of oocyte maturation or the rate of fertilization (p>0.05). Growth factor supplementation increased the 24-hour maturation rate for both GV and MI oocytes only in homemade medium. The maturation rate after 24 hours was higher for MI oocytes (p<0.05). Similar results were observed for MS visualization and ZP structure in both types of media (p>0.05). Conclusion Higher rates of oocyte maturation and fertilization were observed after application of homemade medium supplemented with GDF9-β. Therefore, this combination may be recommended as an alternative for clinical IVM programs.
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Affiliation(s)
- Mehdi Mohsenzadeh
- Gerash Al-Zahra Fertility Center, Gerash University of Medical Sciences, Gerash, Iran
| | - Mohammad Ali Khalili
- Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Fatemeh Anbari
- Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mahboubeh Vatanparast
- Molecular Medicine Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
- Corresponding author: Mahboubeh Vatanparast Molecular Medicine Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Pistachio Boulevard, Rafsanjan, Iran Tel: +98-343-3131-5000 Fax: +98-34-3131-5003 E-mail:
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Nikoloff N. The key role of cumulus cells in oocytes in vitro maturation protocols. Fertil Steril 2021; 116:1663. [PMID: 34742559 DOI: 10.1016/j.fertnstert.2021.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Noelia Nikoloff
- IGEVET - Instituto de Genética Veterinaria "Ing. Fernando N. Dulout" (UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
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8
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Hale BJ, Li Y, Adur MK, Keating AF, Baumgard LH, Ross JW. Characterization of the effects of heat stress on autophagy induction in the pig oocyte. Reprod Biol Endocrinol 2021; 19:107. [PMID: 34243771 PMCID: PMC8268447 DOI: 10.1186/s12958-021-00791-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 06/23/2021] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Heat stress (HS) occurs when body heat accumulation exceeds heat dissipation and is associated with swine seasonal infertility. HS contributes to compromised oocyte integrity and reduced embryo development. Autophagy is a potential mechanism for the oocyte to mitigate the detrimental effects of HS by recycling damaged cellular components. METHODS To characterize the effect of HS on autophagy in oocyte maturation, we utilized an in vitro maturation (IVM) system where oocytes underwent thermal neutral (TN) conditions throughout the entire maturation period (TN/TN), HS conditions during the first half of IVM (HS/TN), or HS conditions during the second half of IVM (TN/HS). RESULTS To determine the effect of HS on autophagy induction within the oocyte, we compared the relative abundance and localization of autophagy-related proteins. Heat stress treatment affected the abundance of two well described markers of autophagy induction: autophagy related gene 12 (ATG12) in complex with ATG5 and the cleaved form of microtubule-associated protein 1 light chain 3 beta (LC3B-II). The HS/TN IVM treatment increased the abundance of the ATG12-ATG5 complex and exacerbated the loss of LC3B-II in oocytes. The B-cell lymphoma 2 like 1 protein (BCL2L1) can inhibit autophagy or apoptosis through its interaction with either beclin1 (BECN1) or BCL2 associated X, apoptosis regulator (BAX), respectively. We detected colocalization of BCL2L1 with BAX but not BCL2L1 with BECN1, suggesting that apoptosis is inhibited under the HS/TN treatment but not autophagy. Interestingly, low doses of the autophagy inducer, rapamycin, increased oocyte maturation. CONCLUSIONS Our results here suggest that HS increases autophagy induction in the oocyte during IVM, and that artificial induction of autophagy increases the maturation rate of oocytes during IVM. These data support autophagy as a potential mechanism activated in the oocyte during HS to recycle damaged cellular components and maintain developmental competence.
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Affiliation(s)
- Benjamin J Hale
- Department of Animal Science, Iowa State University, 2356 Kildee Hall, Ames, IA, 50011, USA
| | - Yunsheng Li
- Department of Animal Science, Iowa State University, 2356 Kildee Hall, Ames, IA, 50011, USA
| | - Malavika K Adur
- Department of Animal Science, Iowa State University, 2356 Kildee Hall, Ames, IA, 50011, USA
| | - Aileen F Keating
- Department of Animal Science, Iowa State University, 2356 Kildee Hall, Ames, IA, 50011, USA
| | - Lance H Baumgard
- Department of Animal Science, Iowa State University, 2356 Kildee Hall, Ames, IA, 50011, USA
| | - Jason W Ross
- Department of Animal Science, Iowa State University, 2356 Kildee Hall, Ames, IA, 50011, USA.
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Talebi T, Mohsen-Pour N, Hesami M, Maleki M, Kalayinia S. The association between in vitro fertilization and intracytoplasmic sperm injection treatment and the risk of congenital heart defects. J Matern Fetal Neonatal Med 2021; 35:7471-7485. [PMID: 34233556 DOI: 10.1080/14767058.2021.1949705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE Assisted reproductive technology (ART), an effective treatment modality for infertility, is associated with a higher prevalence of congenital anomalies such as congenital heart defects (CHDs). The present study aimed to evaluate data linking CHDs in infants to pregnancies resulting from in vitro fertilization (IVF) and/or intracytoplasmic sperm injection (ICSI). METHODS In this study, we conducted a systematic literature search on CHDs in infants following IVF/ICSI in Google Scholar, Embase, Scopus, MEDLINE, and PubMed databases from inception to February 2020. The search strategy used combinations of search keywords that included assisted reproductive technology/ART, in vitro fertilization/IVF, intracytoplasmic sperm injection/ICSI, birth defect, congenital malformation, and congenital heart defects. RESULTS Fifty-six studies fulfilled the inclusion criteria and were selected in the current systematic review, which assessed the association between ART and the risk of CHDs. CONCLUSION Children conceived by IVF/ICSI manifested an increased risk of CHDs compared with spontaneously conceived children. Further studies are needed to assess the long-term cardiovascular safety of these techniques, which is important for the counseling of patients before the use of ART.
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Affiliation(s)
- Taravat Talebi
- Department of Genetics and Molecular Medicine, School of Medicine, Zanjan University of Medical Sciences (ZUMS), Zanjan, Iran
| | - Neda Mohsen-Pour
- Department of Genetics and Molecular Medicine, School of Medicine, Zanjan University of Medical Sciences (ZUMS), Zanjan, Iran
| | - Mahshid Hesami
- Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Majid Maleki
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Samira Kalayinia
- Cardiogenetic Research Center, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran
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Moghimi Khorasgani A, Moradi R, Jafarpour F, Ghazvinizadehgan F, Ostadhosseini S, Heydarnezhad A, Fouladi-Nashta AA, Nasr-Esfahani MH. Alpha-Lipoic Acid Can Overcome The Reduced Developmental Competency Induced by Alcohol Toxicity during Ovine Oocyte Maturation. CELL JOURNAL 2021; 23:164-173. [PMID: 34096217 PMCID: PMC8196229 DOI: 10.22074/cellj.2021.7071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2019] [Accepted: 12/08/2019] [Indexed: 11/24/2022]
Abstract
Objective Alpha-lipoic acid (ALA) as a strong antioxidant has a protective effect. This study was designed to assess
whether supplementation of maturation medium with ALA during in vitro maturation (IVM) can attenuate the toxic effect
of ethanol.
Materials and Methods In this experimental study, to assess the antioxidant capacity of ALA challenged by 1% ethanol
during in vitro maturation, immature ovine oocytes were exposed to 1% alcohol in the presence or absence of 25 µM
ALA during oocyte maturation. The cumulus expansion index, intracellular reactive oxygen species (ROS), and thiol
content levels were assessed in matured oocytes of various treatment groups. Consequently, the blastocyst formation
rate of matured oocytes in various treatment groups were assessed. In addition, total cell number (TCN), cell allocation,
DNA fragmentation, and relative gene expression of interested genes were assessed in resultant blastocysts.
Results The results revealed that alcohol significantly reduced cumulus cells (CCs) expansion index and blastocyst
yield and rate of apoptosis in resultant embryos. Addition of 25 µM ALA to 1% ethanol during oocyte maturation
decreased ROS level and elevated Thiolcontent. Furthermore, supplementation of maturation medium with ALA
attenuated the effect of 1% ethanol and significantly increased the blastocyst formation and hatching rate as compared
to control and ethanol groups. In addition, the quality of blastocysts produced in ALA+ethanol was improved based
on the low number of TUNEL positive cells, the increased expression level of mRNA for pluripotency, and anti-oxidant
markers, and decreased expression of apoptotic genes.
Conclusion The current findings demonstrate that ALA can diminish the effect of ethanol, possibly by decreasing the
ROS level and increasing Thiolcontent during oocyte maturation. Using the ALA supplement may have implications in
protecting oocytes from alcohol toxicity in affected patients.
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Affiliation(s)
- Ali Moghimi Khorasgani
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.,Department of Agricultural Biotechnology, College of Agriculture, Isfahan University of Technology, Isfahan, Iran
| | - Reza Moradi
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Farnoosh Jafarpour
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran. Emails:
| | - Faezeh Ghazvinizadehgan
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Somayyeh Ostadhosseini
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Alireza Heydarnezhad
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Ali Akbar Fouladi-Nashta
- Reproduction Genes and Development Group, Department of Veterinary Basic Sciences, The Royal Veterinary College, HawksheadLane Hatfield, Herts AL97TA, UK
| | - Mohammad Hossein Nasr-Esfahani
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.
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Abstract
The results of in vitro maturation (IVM) investigations suggest the potential for wider clinical application. This document discusses the efficacy of IVM as reported in the published literature to date. This document replaces the document of the same name, last published in 2013.
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12
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Hale BJ, Li Y, Adur MK, Ross JW. Inhibition of germinal vesicle breakdown using IBMX increases microRNA-21 in the porcine oocyte. Reprod Biol Endocrinol 2020; 18:39. [PMID: 32393269 PMCID: PMC7212575 DOI: 10.1186/s12958-020-00603-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 04/27/2020] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Germinal vesicle breakdown (GVBD) occurs during oocyte meiotic maturation, a period when transcriptional processes are virtually inactive. Thus, the maturing oocyte is reliant on processes such as post-transcriptional gene regulation (PTGR) to regulate the mRNA and protein repertoire. MicroRNA (miRNA) are a class of functional small RNA that target mRNA to affect their abundance and translational efficiency. Of particular importance is miRNA-21 (MIR21) due to its role in regulating programmed cell death 4 (PDCD4). The objective of this study was to characterize the abundance and regulation of MIR21 in relation to GVBD. METHODS Oocytes were collected from aspirated porcine tertiary follicles. Relative abundance of mature MIR21 was quantified at 0, 8, 16, 24, 32, and 42 h of in vitro (IVM) with or without treatment with 3-isobutyl-1-methylxanthine (IBMX). RESULTS IBMX increased abundance of MIR21 at 24 h approximately 30-fold compared to control oocytes (P < 0.05), and the induced increase in MIR21 abundance at 24 h was concomitant with premature depletion of PDCD4 protein abundance. To characterize the effect of artificially increasing MIR21 on oocyte competence without inhibiting GVBD, a MIR21 mimic, scrambled microRNA negative control, or nuclease free water was micro-injected into denuded oocytes at 21 h of IVM. The maturation rate of oocytes injected with synthetic MIR21 (63.0 ± 7.5%) was higher than oocytes injected with negative controls (P < 0.05). CONCLUSIONS Inhibition of nuclear meiotic maturation via IBMX significantly increased MIR21 and decreased its target, PDCD4. Injection of a MIR21 mimic increased oocyte maturation rate. Our results indicate MIR21 is active and important during meiotic maturation of the oocyte.
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Affiliation(s)
- Benjamin J Hale
- Department of Animal Science, 2356 Kildee Hall, Iowa State University, Ames, IA, 50011, USA
| | - Yunsheng Li
- Department of Animal Science, 2356 Kildee Hall, Iowa State University, Ames, IA, 50011, USA
| | - Malavika K Adur
- Department of Animal Science, 2356 Kildee Hall, Iowa State University, Ames, IA, 50011, USA
| | - Jason W Ross
- Department of Animal Science, 2356 Kildee Hall, Iowa State University, Ames, IA, 50011, USA.
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13
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Wang H, Cai H, Wang X, Zhang M, Liu B, Chen Z, Yang T, Fang J, Zhang Y, Liu W, Han J, Guo Q, Zhang H, Wang H, Xia G, Wang C. HDAC3 maintains oocyte meiosis arrest by repressing amphiregulin expression before the LH surge. Nat Commun 2019; 10:5719. [PMID: 31844300 PMCID: PMC6915726 DOI: 10.1038/s41467-019-13671-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Accepted: 11/18/2019] [Indexed: 11/21/2022] Open
Abstract
It is known that granulosa cells (GCs) mediate gonadotropin-induced oocyte meiosis resumption by releasing EGF-like factors in mammals, however, the detailed molecular mechanisms remain unclear. Here, we demonstrate that luteinizing hormone (LH) surge-induced histone deacetylase 3 (HDAC3) downregulation in GCs is essential for oocyte maturation. Before the LH surge, HDAC3 is highly expressed in GCs. Transcription factors, such as FOXO1, mediate recruitment of HDAC3 to the amphiregulin (Areg) promoter, which suppresses AREG expression. With the LH surge, decreased HDAC3 in GCs enables histone H3K14 acetylation and binding of the SP1 transcription factor to the Areg promoter to initiate AREG transcription and oocyte maturation. Conditional knockout of Hdac3 in granulosa cells in vivo or inhibition of HDAC3 activity in vitro promotes the maturation of oocytes independent of LH. Taking together, HDAC3 in GCs within ovarian follicles acts as a negative regulator of EGF-like growth factor expression before the LH surge. Before ovulation, a surge of luteinizing hormone (LH) triggers the resumption of meiosis in oocytes, which is mediated by EGF-like growth factors. Here, the authors show that HDAC3 inhibits mouse oocyte maturation by negatively regulating the expression of EGF-like factor before the LH surge.
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Affiliation(s)
- Huarong Wang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, 100193, Beijing, China.,Medical College of Xiamen University, 361005, Xiamen, China
| | - Han Cai
- Medical College of Xiamen University, 361005, Xiamen, China
| | - Xiao Wang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, 100193, Beijing, China.,Beijing Advanced Innovation Center for Genomics, Biomedical Pioneering Innovation Center, College of Life Sciences, Peking University, 100871, Beijing, China
| | - Meiling Zhang
- Shanghai Key Laboratory for Assistant Reproduction and Reproductive Genetics, Center for Reproductive Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, 200127, Shanghai, China
| | - Bingying Liu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, 100193, Beijing, China
| | - Ziqi Chen
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, 100193, Beijing, China
| | - Tingting Yang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, 100193, Beijing, China
| | - Junshun Fang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, 100193, Beijing, China.,Reproductive Medical Center, Drum Tower Hospital Affiliated to Nanjing University Medical College, Zhongshan Road 321, 210008, Nanjing, China
| | - Yanhao Zhang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, 100193, Beijing, China
| | - Wei Liu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, 100193, Beijing, China
| | - Jun Han
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, 100193, Beijing, China
| | - Qirui Guo
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, 100193, Beijing, China
| | - Hua Zhang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, 100193, Beijing, China
| | - Haibin Wang
- Medical College of Xiamen University, 361005, Xiamen, China
| | - Guoliang Xia
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, 100193, Beijing, China.,Key Laboratory of Ministry of Education for Conservation and Utilization of Special Biological Resources in the Western China, College of Life Science, Ningxia University, 750021, Yinchuan, Ningxia, China
| | - Chao Wang
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, 100193, Beijing, China.
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14
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Sarkar P, Ying L, Plosker S, Mayer J, Ying Y, Imudia AN. Duration of ovarian stimulation is predictive of in-vitro fertilization outcomes. ACTA ACUST UNITED AC 2019; 71:419-426. [PMID: 31741366 DOI: 10.23736/s0026-4784.19.04455-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND The aim of this study is to evaluate the effect of ovarian stimulation duration on oocyte/embryo development and pregnancy outcome in an in-vitro fertilization cycle (IVF). METHODS Retrospective cohort study performed at University of South Florida reproductive center between January 2011 and December 2016. A total of 690 sub-fertile women who underwent autologous IVF cycle were included for analysis. The outcomes were compared between patients undergoing ovarian stimulation for ≤8 days and >8 days. Data was further categorized into accelerated stimulation group (≤8 days), normal duration stimulation group (9-12 days), and delayed stimulation group (≥13 days). Primary outcome was live birth rate. Secondary outcomes include oocyte development and embryo characteristics. RESULTS A total of 69 (10%) and 621 (90%) patients underwent ovarian stimulation for ≤8 and >8 days, respectively. Ovarian stimulation for >8 days had 2.1 times higher odds of live birth (35.7% vs. 20.8%, 95% CI: 1.02-4.44, P=0.04), and 1.9-fold-higher odds of clinical pregnancy (42.6% vs. 27.1%, 95% CI: 1.03-3.87, P=0.05). Number of matured oocytes (P=0.002), normally fertilized embryos (P=0.008), 6-8 cell stage embryos (P=0.003) and blastocysts (P=0.014) were higher in cycles with stimulation >8 days. Further analysis showed that live birth rate was highest in the group of patients with normal duration stimulation group (37.3%) compared to patients with delayed stimulation (25%) and accelerated stimulation (20.8%). CONCLUSIONS In an IVF cycle, optimal ovarian response and pregnancy outcome is associated with stimulation duration of at least 9 days. Both accelerated and delayed follicular recruitment are indicators for suboptimal response.
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Affiliation(s)
- Papri Sarkar
- Division of Reproductive Endocrinology and Infertility, University of South Florida, Tampa, FL, USA
| | - Luke Ying
- Division of Reproductive Endocrinology and Infertility, University of South Florida, Tampa, FL, USA
| | - Shayne Plosker
- Division of Reproductive Endocrinology and Infertility, University of South Florida, Tampa, FL, USA
| | - James Mayer
- Division of Reproductive Endocrinology and Infertility, University of South Florida, Tampa, FL, USA
| | - Ying Ying
- Division of Reproductive Endocrinology and Infertility, University of South Florida, Tampa, FL, USA
| | - Anthony N Imudia
- Division of Reproductive Endocrinology and Infertility, University of South Florida, Tampa, FL, USA -
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15
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Mihanfar A, Sadigh AR, Fattahi A, Latifi Z, Hasanzadeh-Moghadam M, Samadi M, Farzadi L, Hamdi K, Ghasemzadeh A, Nejabati HR, Nouri M. Endothelins and their receptors in embryo implantation. J Cell Biochem 2019; 120:14274-14284. [PMID: 31106465 DOI: 10.1002/jcb.28983] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 03/31/2019] [Accepted: 04/08/2019] [Indexed: 12/12/2022]
Abstract
As a critical stage of pregnancy, the implantation of blastocysts into the endometrium is a progressive, excessively regulated local tissue remodeling step involving a complex sequence of genetic and cellular interplay executed within an optimal time frame. For better understanding the causes of infertility and, more importantly, for developing powerful strategies for successful implantations and combating infertility, an increasing number of recent studies have been focused on the identification and study of newly described substances in the reproductive tree. The endothelins (ET), a 21-aminoacidic family of genes, have been reported to be responsible for the contraction of vascular and nonvascular smooth muscles, including the smooth muscles of the uterus. Therefore, this review aims to comprehensively discuss the physiological role of endothelins and signaling through their receptors, as well as their probable involvement in the implantation process.
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Affiliation(s)
- Aynaz Mihanfar
- Department of Biochemistry, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, Iran
| | - Aydin Raei Sadigh
- Department of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir Fattahi
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zeinab Latifi
- Department of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Mahrokh Samadi
- Nephrology and Kidney Transplant Research Center, Urmia University of Medical Sciences, Urmia, Iran
| | - Laya Farzadi
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Kobra Hamdi
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Aliyeh Ghasemzadeh
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Hamid Reza Nejabati
- Department of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.,Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran.,Stem Cell Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Nouri
- Department of Reproductive Biology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz, Iran.,Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
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16
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Microfluidic Devices for Gamete Processing and Analysis, Fertilization and Embryo Culture and Characterization. Bioanalysis 2019. [DOI: 10.1007/978-981-13-6229-3_7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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17
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Escrich L, Galiana Y, Grau N, Insua F, Soler N, Pellicer A, Escribá MJ. Do immature and mature sibling oocytes recovered from stimulated cycles have the same reproductive potential? Reprod Biomed Online 2018; 37:667-676. [PMID: 30539737 DOI: 10.1016/j.rbmo.2018.08.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 08/24/2018] [Accepted: 08/24/2018] [Indexed: 12/25/2022]
Abstract
RESEARCH QUESTION How can laboratory and clinical outcomes of spontaneously, early maturing germinal-vesicle oocytes and sibling in-vivo-matured (metaphase II [MII]) oocytes be quantified and compared? DESIGN A prospective, non-randomized intra-cohort study of oocytes from women aged 38 years or younger, with six or fewer MII oocytes and four or more germinal vesicles retrieved. No indication was identified for genetic tests or oocyte or embryo cryopreservation. The study was carried out at IVIRMA-Valencia. Early maturing germinal vesicles were selected for reproductive purposes. In vitro- and in-vivo MII oocytes were fertilized. After time-lapse culture, hatching blastocysts from germinal vesicles were biopsied for aneuploidy screening and vitrified. Laboratory and clinical outcomes were compared according to oocyte origin. RESULTS Almost 70% of germinal vesicles had matured early and spontaneously, and had comparable in vitro-outcomes and morphokinetics to sibling in vivo-matured oocytes. Fifty per cent of biopsied blastocysts were euploid. Germinal-vesicle rescue increased the number of MII oocytes per cycle to 3.9, finally adding one extra-blastocyst per cycle. A live birth confirmed the feasibility of this approach. Further data, however, are needed to quantify its real contribution to standard intracytoplasmic sperm injection cycles. Nevertheless, 40% of patients obtained either an immediate advantage (reduction of cancellation rate) or long-term benefit (availability of extra blastocysts of attempts). CONCLUSIONS Germinal-vesicle rescue can be considered as a complementary approach when folliculometry (expected) and number of MII (observed) are unequal.
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Affiliation(s)
- L Escrich
- IVF Laboratory, IVIRMA-Valencia, Valencia 46015, Spain
| | - Y Galiana
- IVF Laboratory, IVIRMA-Valencia, Valencia 46015, Spain; IVF Laboratory, IVF Spain, Alicante 03540, Spain
| | - N Grau
- IVF Laboratory, IVIRMA-Valencia, Valencia 46015, Spain
| | - F Insua
- IVF Laboratory, IVIRMA-Valencia, Valencia 46015, Spain
| | - N Soler
- IVF Laboratory, IVIRMA-Valencia, Valencia 46015, Spain
| | - A Pellicer
- Reproductive Medicine Research Group, Instituto de Investigación Sanitaria La Fe, La Fe University Hospital, Valencia 46026, Spain; IVIRMA- Roma, Roma 00197, Italy
| | - M J Escribá
- IVF Laboratory, IVIRMA-Valencia, Valencia 46015, Spain; IVI Foundation, INCLIVA, Valencia 46026, Spain.
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18
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Fesahat F, Kalantar SM, Sheikhha MH, Saeedi H, Montazeri F, Firouzabadi RD, Khalili MA. Developmental and cytogenetic assessments of preimplantation embryos derived from in-vivo or in-vitro matured human oocytes. Eur J Med Genet 2018; 61:235-241. [DOI: 10.1016/j.ejmg.2017.12.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Revised: 10/25/2017] [Accepted: 12/06/2017] [Indexed: 12/28/2022]
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19
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Current perspectives on in vitro maturation and its effects on oocyte genetic and epigenetic profiles. SCIENCE CHINA-LIFE SCIENCES 2018; 61:633-643. [PMID: 29569023 DOI: 10.1007/s11427-017-9280-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 12/26/2017] [Indexed: 12/14/2022]
Abstract
In vitro maturation (IVM), the maturation in culture of immature oocytes, has been used in clinic for more than 20 years. Although IVM has the specific advantages of low cost and minor side effects over controlled ovarian stimulation, the prevalence of IVM is less than 1% of routine in vitro fertilization and embryo transfer techniques in many reproductive centers. In this review, we searched the MEDLINE database for all full texts and/or abstract articles published in English with content related to oocyte IVM mainly between 2000 and 2016. Many different aspects of the IVM method may influence oocyte potential, including priming, gonadotrophin, growth factors, and culture times. The culture conditions of IVM result in alterations in the oocyte or cumulus cell transcriptome that are not observed under in vivo culture conditions. Additionally, epigenetic modifications, such as DNA methylation or acetylation, are also different between in vitro and in vivo cultured oocytes. In sum, current IVM technique is still not popular and requires more systematic and intensive research to improve its effects and applications. This review will help point our problems, supply evidence or clues for future improving IVM technique, thus assist patients for fertility treatment or preservation as an additional option.
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20
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Khan I, Chowdhury M, Song SH, Mesalam A, Zhang S, Khan Khalil AA, Jung EH, Kim JB, Jafri L, Mirza B, Kong IK. Lupeol supplementation improves the developmental competence of bovine embryos in vitro. Theriogenology 2018; 107:203-210. [DOI: 10.1016/j.theriogenology.2017.11.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 11/11/2017] [Accepted: 11/12/2017] [Indexed: 01/11/2023]
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21
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Protective effect of antioxidants on the pre-maturation aging of mouse oocytes. Sci Rep 2017; 7:1434. [PMID: 28469172 PMCID: PMC5431116 DOI: 10.1038/s41598-017-01609-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 03/30/2017] [Indexed: 12/30/2022] Open
Abstract
Pre-maturation aging of immature oocytes may adversely affect the fate of an oocyte. Oxidative stress is one of the most detrimental factors affecting oocyte developmental competence and maturation during aging. In this study, experiments were designed to examine whether supplementation of antioxidants in a culture medium could protect immature mouse oocytes from damages caused by oxidative stress. Mouse oocytes at germinal vesicle stage were prevented from meiosis resumption and cultured in a medium with or without antioxidants for 12–36 h to allow oocytes to undergo aging. After aging, oocytes were cultured for maturation. Nuclear maturation, mitochondria activity, spindle morphology and DNA integrity were examined after maturation. It was found that antioxidants had protective effects on the oocytes in terms of nuclear maturation, functional mitochondria, spindle morphology and DNA integrity. As aging time was prolonged from 12 to 36 h, the protective effect of antioxidants became more obvious. However, as compared with oocytes without aging, it was found that aging significantly inhibited nuclear maturation, impaired mitochondria function, and damaged the spindle and DNA. These results indicate that pre-maturation aging is detrimental to oocytes’ competence to undergo maturation and other cellular activities, and antioxidants can protect oocytes from damages caused by aging.
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Abstract
Current freezing technology, especially the vitrification method, has markedly improved oocyte survival rate after warming, and the pregnancy rate is comparable to that achieved with fresh oocytes. However, most groups report using oocytes matured in vivo for vitrification. Although immature oocytes can be vitrified successfully, clinical outcomes do not reach that of vitrification of matured oocytes. The current literature suggests that oocytes should be vitrified at mature metaphase II (M-II) stage following IVM rather than at the immature germinal vesicle (GV) stage, because the potential for oocyte maturation is reduced when vitrification is performed on immature oocytes at the GV stage.
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Affiliation(s)
- Ri-Cheng Chian
- Department of Obstetrics and Gynecology, McGill University, 687 Pine Avenue West, H3A 1A1, Montreal, Canada.
| | - Yixin Xu
- Department of Obstetrics and Gynecology, McGill University, 687 Pine Avenue West, H3A 1A1, Montreal, Canada
| | - Dana Keilty
- Department of Obstetrics and Gynecology, McGill University, 687 Pine Avenue West, H3A 1A1, Montreal, Canada
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23
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Robertson DM, Gilchrist RB, Ledger WL, Baerwald A. Random start or emergency IVF/in vitro maturation: a new rapid approach to fertility preservation. ACTA ACUST UNITED AC 2016; 12:339-49. [PMID: 27248769 DOI: 10.2217/whe-2015-0001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
There is a need to develop rapid protocols for ovarian stimulation for women who wish to preserve their fertility following diagnosis of cancer. Conventional gonadotropin stimulation protocols are lengthy and are delayed until the start of the next menstrual period, potentially compromising cancer treatments. The development of random start IVF/in vitro maturation has made significant strides for enabling couples undergoing cancer therapy to achieve a family. However, several unanswered questions still remain. What do we know about the endocrinology of stimulating ovarian follicular activity outside the established protocols of stimulation during the follicular phase? This article explores what is known about antral follicle development during the menstrual cycle, novel ovarian stimulation proposals for optimizing assisted reproductive therapies in women, and direction.
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Affiliation(s)
- David Mark Robertson
- School of Women's & Children's Health, Discipline of Obstetrics & Gynaecology, University of New South Wales, Sydney, Australia.,Hudson Institute of Medical Research, Clayton, Victoria, Australia
| | - Robert B Gilchrist
- School of Women's & Children's Health, Discipline of Obstetrics & Gynaecology, University of New South Wales, Sydney, Australia
| | - William Leigh Ledger
- School of Women's & Children's Health, Discipline of Obstetrics & Gynaecology, University of New South Wales, Sydney, Australia
| | - Angela Baerwald
- Department of Obstetrics, Gynecology & Reproductive Sciences, College of Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
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Effects of cilostamide and/or forskolin on the meiotic resumption and development competence of growing ovine oocytes selected by brilliant cresyl blue staining. Theriogenology 2016; 85:1483-90. [DOI: 10.1016/j.theriogenology.2016.01.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 01/07/2016] [Accepted: 01/09/2016] [Indexed: 11/23/2022]
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25
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Lee HJ, Barad DH, Kushnir VA, Shohat-Tal A, Lazzaroni-Tealdi E, Wu YG, Gleicher N. Rescue in vitro maturation (IVM) of immature oocytes in stimulated cycles in women with low functional ovarian reserve (LFOR). Endocrine 2016; 52:165-71. [PMID: 26419849 DOI: 10.1007/s12020-015-0744-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 09/16/2015] [Indexed: 11/26/2022]
Abstract
Rescue in vitro maturation (IVM) is currently not a routine procedure in association with in vitro fertilization (IVF). We compared in a prospectively cohort study of 10 patients with normal functional ovarian reserve (NFOR) and of 25 with low functional ovarian reserve (LFOR), defined by abnormally high FSH and/or abnormally low AMH levels), IVM dynamics of immature oocytes. Following controlled ovarian hyperstimulation in IVF cycles, only immature oocytes underwent rescue IVM (for up to 48 h). Oocyte maturation dynamics, fertilization rates, embryo development, and pregnancy rates were then compared between NFOR and LFOR patients. Though proportion of MI and GV oocytes reaching MII stages within 48 h and rate of maturation of MI oocytes did not differ, in women with LFOR significantly more GV oocytes reached MII stage within 24 h (30.4 vs. 66.9 %; P = 0.013), while fertilization rates and embryo generation numbers were similar between both groups. Rescue IVM, thus, produced 1.5 additional embryos for transfer in women with LFOR and 1.6 in patients with NFOR, a highly significant difference in relative improvement in available embryo numbers for LFOR (+60.0 %) and NFOR women (+16.5 %). Rescue IVM, thus, not only demonstrates different time dynamics between women with LFOR and NFOR but also disproportionate efficacy in improving available embryo numbers for transfer in favor of LFOR patients. 1/7 patients, who reached embryo transfer with only embryos produced via rescue IVF conceived and delivered, proving that rescue IVF in women with LFOR also improves pregnancy and delivery chances. Because of the small number of embryos LFOR patients produce, every additional embryo is of considerable potential clinical significance for them, suggesting that rescue IVM in women with LFOR should become routine practice.
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Affiliation(s)
- Ho-Joon Lee
- The Center for Human Reproduction, 21 East 69th Street, New York, NY, 10021, USA
| | - David H Barad
- The Center for Human Reproduction, 21 East 69th Street, New York, NY, 10021, USA
- The Foundation for Reproductive Medicine, New York, NY, USA
- Department of Obstetrics and Gynecology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Vitaly A Kushnir
- The Center for Human Reproduction, 21 East 69th Street, New York, NY, 10021, USA
- Department of Obstetrics and Gynecology, Wake Forest University, Winston-Salem, NC, USA
| | - Aya Shohat-Tal
- The Center for Human Reproduction, 21 East 69th Street, New York, NY, 10021, USA
| | | | - Yan-Guang Wu
- The Center for Human Reproduction, 21 East 69th Street, New York, NY, 10021, USA
| | - Norbert Gleicher
- The Center for Human Reproduction, 21 East 69th Street, New York, NY, 10021, USA.
- The Foundation for Reproductive Medicine, New York, NY, USA.
- Stem Cell and Molecular Embryology Laboratory, The Rockefeller University, New York, NY, USA.
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26
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Yang L, Wei Q, Li W, Xi Q, Zhao X, Ma B. NPR2 is involved in FSH-mediated mouse oocyte meiotic resumption. J Ovarian Res 2016; 9:6. [PMID: 26880031 PMCID: PMC4754804 DOI: 10.1186/s13048-016-0218-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 02/09/2016] [Indexed: 11/22/2022] Open
Abstract
Background Previous studies have reported that follicle-stimulating hormone (FSH) is often added to culture media to induce oocyte meiotic resumption and maturation and to improve subsequent embryonic development during in vitro maturation (IVM). However, the underlying mechanisms remain unclear. Methods Cumulus-oocyte complexes (COCs) were collected from ovaries 46–48 h after the female mice were intraperitoneally injected with 8 IU equine chorionic gonadotropin (eCG) and then the COCs were cultured in different medium. qRT-PCR analysis was used to assess mRNA expression of EGF-like factors and natriuretic peptide receptor 2 (NPR2). Western Blot analysis was used to assess phosphorylation of mitogen-activated protein kinase 3/1 (MAPK3/1). The oocytes were morphologically assessed for meiotic resumption. Results FSH stimulated the expression of EGF-like factors, the activation of MAPK3/1, a decrease in NPR2 mRNA and oocyte meiotic resumption. Moreover, the FSH-induced decrease in NPR2 and oocyte meiotic resumption occurred via the MAPK3/1 singling pathway, which was activated by the epidermal growth factor receptor (EGFR) pathway. Conclusions NPR2 is involved in FSH-mediated oocyte meiotic resumption, and this process is associated with the EGFR and MAPK3/1 signaling pathways.
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Affiliation(s)
- Lei Yang
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China. .,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
| | - Qiang Wei
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China. .,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
| | - Wei Li
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China. .,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
| | - Qihui Xi
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China. .,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
| | - Xiaoe Zhao
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China. .,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
| | - Baohua Ma
- Key Laboratory of Animal Biotechnology of the Ministry of Agriculture, Northwest A&F University, Yangling, Shaanxi, 712100, China. .,College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, 712100, People's Republic of China.
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Feng R, Sang Q, Kuang Y, Sun X, Yan Z, Zhang S, Shi J, Tian G, Luchniak A, Fukuda Y, Li B, Yu M, Chen J, Xu Y, Guo L, Qu R, Wang X, Sun Z, Liu M, Shi H, Wang H, Feng Y, Shao R, Chai R, Li Q, Xing Q, Zhang R, Nogales E, Jin L, He L, Gupta ML, Cowan NJ, Wang L. Mutations in TUBB8 and Human Oocyte Meiotic Arrest. N Engl J Med 2016; 374:223-32. [PMID: 26789871 PMCID: PMC4767273 DOI: 10.1056/nejmoa1510791] [Citation(s) in RCA: 187] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Background Human reproduction depends on the fusion of a mature oocyte with a sperm cell to form a fertilized egg. The genetic events that lead to the arrest of human oocyte maturation are unknown. Methods We sequenced the exomes of five members of a four-generation family, three of whom had infertility due to oocyte meiosis I arrest. We performed Sanger sequencing of a candidate gene, TUBB8, in DNA samples from these members, additional family members, and members of 23 other affected families. The expression of TUBB8 and all other β-tubulin isotypes was assessed in human oocytes, early embryos, sperm cells, and several somatic tissues by means of a quantitative reverse-transcriptase-polymerase-chain-reaction assay. We evaluated the effect of the TUBB8 mutations on the assembly of the heterodimer consisting of one α-tubulin polypeptide and one β-tubulin polypeptide (α/β-tubulin heterodimer) in vitro, on microtubule architecture in HeLa cells, on microtubule dynamics in yeast cells, and on spindle assembly in mouse and human oocytes. Results We identified seven mutations in the primate-specific gene TUBB8 that were responsible for oocyte meiosis I arrest in 7 of the 24 families. TUBB8 expression is unique to oocytes and the early embryo, in which this gene accounts for almost all the expressed β-tubulin. The mutations affect chaperone-dependent folding and assembly of the α/β-tubulin heterodimer, disrupt microtubule behavior on expression in cultured cells, alter microtubule dynamics in vivo, and cause catastrophic spindle-assembly defects and maturation arrest on expression in mouse and human oocytes. Conclusions TUBB8 mutations have dominant-negative effects that disrupt microtubule behavior and oocyte meiotic spindle assembly and maturation, causing female infertility. (Funded by the National Basic Research Program of China and others.).
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Affiliation(s)
- Ruizhi Feng
- State Key Laboratory of Genetic Engineering, MOE Key Laboratory of Contemporary Anthropology, and Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Fudan University, Shanghai 200438, China; Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Qing Sang
- State Key Laboratory of Genetic Engineering, MOE Key Laboratory of Contemporary Anthropology, and Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Fudan University, Shanghai 200438, China; Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Yanping Kuang
- Reproductive Medicine Center, Shanghai Ninth hospital, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Xiaoxi Sun
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - Zheng Yan
- Reproductive Medicine Center, Shanghai Ninth hospital, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Shaozhen Zhang
- Reproductive Medicine Center, Shanghai Ninth hospital, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Juanzi Shi
- Reproductive Medicine Center, Shannxi Maternal and Child Care Service Center, Shannxi 710069, China
| | - Guoling Tian
- Department of Biochemistry and Molecular Pharmacology, New York University Medical Center, NY 10016, USA
| | - Anna Luchniak
- Department of Molecular Genetics and Cell Biology, University of Chicago, Chicago, IL 60637, USA
| | - Yusuke Fukuda
- Department of Molecular Genetics and Cell Biology, University of Chicago, Chicago, IL 60637, USA
| | - Bin Li
- Reproductive Medicine Center, Shanghai Ninth hospital, Shanghai Jiao Tong University, Shanghai 200011, China
| | - Min Yu
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - Junling Chen
- Shanghai Ji Ai Genetics and IVF Institute, Obstetrics and Gynecology Hospital, Fudan University, Shanghai 200011, China
| | - Yao Xu
- State Key Laboratory of Genetic Engineering, MOE Key Laboratory of Contemporary Anthropology, and Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Fudan University, Shanghai 200438, China; Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Luo Guo
- Department of Otolaryngology, Eye & ENT hospital, Fudan University, Shanghai 200031, China
| | - Ronggui Qu
- State Key Laboratory of Genetic Engineering, MOE Key Laboratory of Contemporary Anthropology, and Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Fudan University, Shanghai 200438, China; Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Xueqian Wang
- State Key Laboratory of Genetic Engineering, MOE Key Laboratory of Contemporary Anthropology, and Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Fudan University, Shanghai 200438, China; Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Zhaogui Sun
- Shanghai Institute of Planned Parenthood Research, Shanghai 200032, China
| | - Miao Liu
- Shanghai Institute of Planned Parenthood Research, Shanghai 200032, China
| | - Huijuan Shi
- Shanghai Institute of Planned Parenthood Research, Shanghai 200032, China
| | - Hongyan Wang
- State Key Laboratory of Genetic Engineering, MOE Key Laboratory of Contemporary Anthropology, and Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Fudan University, Shanghai 200438, China; Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Yi Feng
- Department of Integrative Medicine and Neurobiology, State Key Laboratory of Medical Neurobiology, Shanghai Medical College, Fudan University, Shanghai 200032, China
| | - Ruijin Shao
- Department of Physiology/Endocrinology, Institute of Neuroscience and Physiology, University of Gothenburg, Gothenburg 40530, Sweden
| | - Renjie Chai
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing 210096, China
| | - Qiaoli Li
- State Key Laboratory of Genetic Engineering, MOE Key Laboratory of Contemporary Anthropology, and Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Fudan University, Shanghai 200438, China; Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Qinghe Xing
- State Key Laboratory of Genetic Engineering, MOE Key Laboratory of Contemporary Anthropology, and Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Fudan University, Shanghai 200438, China; Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Rui Zhang
- Life Sciences Division, Lawrence Berkeley National Laboratory, UC Berkeley, Berkeley 94720, USA
| | - Eva Nogales
- Life Sciences Division, Lawrence Berkeley National Laboratory, UC Berkeley, Berkeley 94720, USA
- Molecular and Cell Biology Department, UC Berkeley, Berkeley, USA; Howard Hughes Medical Institute, UC Berkeley, Berkeley 94720, USA
| | - Li Jin
- State Key Laboratory of Genetic Engineering, MOE Key Laboratory of Contemporary Anthropology, and Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Fudan University, Shanghai 200438, China; Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
| | - Lin He
- State Key Laboratory of Genetic Engineering, MOE Key Laboratory of Contemporary Anthropology, and Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Fudan University, Shanghai 200438, China; Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
- Bio-X Center, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders, Ministry of Education, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Mohan L. Gupta
- Department of Molecular Genetics and Cell Biology, University of Chicago, Chicago, IL 60637, USA
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA 50011, USA
| | - Nicholas J. Cowan
- Department of Biochemistry and Molecular Pharmacology, New York University Medical Center, NY 10016, USA
- Corresponding authors: (L.W.) or (N.J.C.)
| | - Lei Wang
- State Key Laboratory of Genetic Engineering, MOE Key Laboratory of Contemporary Anthropology, and Collaborative Innovation Center of Genetics and Development, School of Life Sciences, Fudan University, Shanghai 200438, China; Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China
- Corresponding authors: (L.W.) or (N.J.C.)
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Hourvitz A, Yerushalmi G, Maman E, Raanani H, Elizur S, Brengauz M, Orvieto R, Dor J, Meirow D. Combination of ovarian tissue harvesting and immature oocyte collection for fertility preservation increases preservation yield. Reprod Biomed Online 2015; 31:497-505. [DOI: 10.1016/j.rbmo.2015.06.025] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 06/29/2015] [Accepted: 06/30/2015] [Indexed: 12/23/2022]
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Effect of C-Type Natriuretic Peptide on Maturation and Developmental Competence of Goat Oocytes Matured In Vitro. PLoS One 2015; 10:e0132318. [PMID: 26151446 PMCID: PMC4511268 DOI: 10.1371/journal.pone.0132318] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 06/12/2015] [Indexed: 01/23/2023] Open
Abstract
The developmental competence of oocytes during in vitro maturation (IVM) is compromised due to asynchronous nuclear and cytoplasmic maturation. To improve IVM efficiency, a pre-maturation culture or two-step maturation strategy has been established, involving meiosis arrest induced by pharmacological agents to provide oocytes with sufficient time to synchronize the maturation of the nucleus and cytoplasm. C-type natriuretic peptide (CNP), which has been demonstrated to function as an oocyte maturation inhibitor (OMI) in many species, provides a new alternative to improve the developmental capacity of oocytes matured in vitro. However, the effect of CNP on meiosis arrest and the maturation of goat oocytes remains unclear. In the present study, CNP was shown to function as an OMI in goat oocytes. CNP could temporarily maintain the meiotic arrest of goat oocytes cultured in vitro for 4 hours. This transient effect was partly due to the reduction of natriuretic peptide receptor 2 (Npr2). Estradiol could delay the decrease in Npr2 expression and prolong the duration of meiosis arrest up to 6 hours. Based on the above results, a two-step method was established for goat oocyte maturation, in which the oocyte maturation rate was significantly increased. After parthenogenetic activation, the cleavage rate, blastocyst rate and total cell number of blastocysts were significantly improved. Our results suggested that CNP can be used to delay meiotic resumption and enhance the developmental competence of goat oocytes matured in vitro.
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Sanchez F, Romero S, De Vos M, Verheyen G, Smitz J. Human cumulus-enclosed germinal vesicle oocytes from early antral follicles reveal heterogeneous cellular and molecular features associated with in vitro maturation capacity. Hum Reprod 2015; 30:1396-409. [DOI: 10.1093/humrep/dev083] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Accepted: 03/25/2015] [Indexed: 11/13/2022] Open
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Farghaly T, Khalifa E, Mostafa S, Hussein M, Bedaiwy M, Ahmady A. The effect of temporary meiotic attenuation on the in vitro maturation outcome of bovine oocytes. In Vitro Cell Dev Biol Anim 2015; 51:662-71. [DOI: 10.1007/s11626-015-9878-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 02/09/2015] [Indexed: 10/23/2022]
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Padhee M, Zhang S, Lie S, Wang KC, Botting KJ, McMillen IC, MacLaughlin SM, Morrison JL. The periconceptional environment and cardiovascular disease: does in vitro embryo culture and transfer influence cardiovascular development and health? Nutrients 2015; 7:1378-425. [PMID: 25699984 PMCID: PMC4377860 DOI: 10.3390/nu7031378] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 01/22/2015] [Accepted: 01/30/2015] [Indexed: 02/07/2023] Open
Abstract
Assisted Reproductive Technologies (ARTs) have revolutionised reproductive medicine; however, reports assessing the effects of ARTs have raised concerns about the immediate and long-term health outcomes of the children conceived through ARTs. ARTs include manipulations during the periconceptional period, which coincides with an environmentally sensitive period of gamete/embryo development and as such may alter cardiovascular development and health of the offspring in postnatal life. In order to identify the association between ARTs and cardiovascular health outcomes, it is important to understand the events that occur during the periconceptional period and how they are affected by procedures involved in ARTs. This review will highlight the emerging evidence implicating adverse cardiovascular outcomes before and after birth in offspring conceived through ARTs in both human and animal studies. In addition, it will identify the potential underlying causes and molecular mechanisms responsible for the congenital and adult cardiovascular dysfunctions in offspring whom were conceived through ARTs.
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Affiliation(s)
- Monalisa Padhee
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, SA 5001, Australia.
| | - Song Zhang
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, SA 5001, Australia.
| | - Shervi Lie
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, SA 5001, Australia.
| | - Kimberley C Wang
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, SA 5001, Australia.
| | - Kimberley J Botting
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, SA 5001, Australia.
| | - I Caroline McMillen
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, SA 5001, Australia.
| | - Severence M MacLaughlin
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, SA 5001, Australia.
| | - Janna L Morrison
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, SA 5001, Australia.
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Spits C, Guzman L, Mertzanidou A, Jacobs K, Ortega-Hrepich C, Gilchrist RB, Thompson JG, De Vos M, Smitz J, Sermon K. Chromosome constitution of human embryos generated after in vitro maturation including 3-isobutyl-1-methylxanthine in the oocyte collection medium. Hum Reprod 2014; 30:653-63. [PMID: 25475586 DOI: 10.1093/humrep/deu329] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
STUDY QUESTION Do cleavage-stage embryos obtained from oocytes matured in vitro after pre-incubation with a phosphodiesterase inhibitor (IBMX) carry more chromosomal abnormalities than those generated from oocytes matured in vivo? SUMMARY ANSWER The rate and type of chromosomal abnormalities in normally developing cleavage-stage embryos generated with an in vitro maturation (IVM) system including pre-incubation with IBMX are not different from those observed in supernumerary embryos obtained from oocytes matured in vivo. WHAT IS KNOWN ALREADY Very limited information is available about the chromosomal constitution of IVM embryos. Previous studies were carried out using FISH on single biopsied blastomeres or arrested whole embryos and only provided fragmentary information on chromosomal abnormalities in IVM embryos. There is no systematic study of chromosomal abnormalities in all blastomeres of human Day 3 embryos with good morphology. STUDY DESIGN, SIZE, DURATION Between July 2012 and December 2012, 16 young (age <35 years old) egg donors underwent 18 IVM cycles for the generation of research embryos. Eighteen embryos developed to Day 3 and were analysed using array comparative genomic hybridization (aCGH). PARTICIPANTS/MATERIALS, SETTING, METHODS Immature oocytes were retrieved from 2 to 10 mm follicles after mild ovarian stimulation with gonadotrophins but without hCG ovulation trigger. At collection, oocytes were pre-incubated with 3-isobutyl-1-methylxanthine (IBMX), a phosphodiesterase inhibitor and matured in vitro. After IVM culture, mature oocytes were microinjected with sperm from a single donor. Embryos were cultured to Day 3 after ICSI and all blastomeres of 18 good-morphology embryos were collected individually for aCGH. MAIN RESULTS AND THE ROLE OF CHANCE Oocyte maturation rate in vitro was 50.2% (120/239). The mean fertilization rate was 68.3% (82/120) and 30.5% (25/82) of fertilized oocytes developed into a morphologically good quality embryo on Day 3 after ICSI. Of these, 18 embryos that developed well up to Day 3 were analysed using aCGH. Eighty of the 123 blastomeres analysed showed at least one chromosomal abnormality. Three out of eighteen embryos had completely normal cells. A single embryo carried a meiotic abnormality, 11 embryos were mosaic and three were chaotic. Although the aneuploidy data of this study are too limited to allow statistical analysis, these data are comparable to our own published data on the chromosome constitution of whole day 3 and day 4 embryos after conventional ART. LIMITATIONS, REASONS FOR CAUTION Array CGH technology determines relative quantification of chromosomal domains but does not allow for the visualization of chromosomal rearrangements, assessment of ploidy or detection of uniparental isodisomy. Conclusions drawn on segmental abnormalities should be treated with caution. Although the limited number of embryos analysed here precludes firm conclusions, they provide valuable data on possible causes of the reduced potential of IVM embryos. WIDER IMPLICATIONS OF THE FINDINGS This is the first study to describe the complete chromosome complement of all single blastomeres of good-morphology day 3 embryos obtained with IVM (including the presence of IBMX in a pre-incubation medium). The results demonstrate that a high proportion of good-morphology embryos are aneuploid and that there is no obvious increase in aneuploidies as a result of IVM which seems to suggest that the reduced efficiency of IVM technology compared with standard IVF may be accounted for by factors other than aneuploidy, such as cytoplasmic defects or reduced endometrial receptivity. STUDY FUNDING/COMPETING INTERESTS This study was funded by the TBM (Applied Biomedical Research with Societal Finality) programme of the IWT (Agency for Innovation through Science and Technology - Flanders, 110680) and by a Methusalem grant of the Vrije Universiteit Brussel. C.S. is a post-doctoral fellow of the Fund for Scientific Research Flanders (FWO - Vlaanderen). K.J. is a PhD student funded by the FWO. The University of Adelaide owns a patent family associated with IVM technologies that is licensed to Cook Medical. R.B.G. and J.G.T. are inventors. The remaining authors have no conflict of interest to declare.
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Affiliation(s)
- C Spits
- Research Group Reproduction and Genetics, Vrije Universiteit Brussel, 1090 Brussels, Belgium Centre for Reproductive Medicine, UZ Brussel, 1090 Brussels, Belgium
| | - L Guzman
- Research Group Follicle Biology, Vrije Universiteit Brussel, 1090 Brussels, Belgium
| | - A Mertzanidou
- Research Group Reproduction and Genetics, Vrije Universiteit Brussel, 1090 Brussels, Belgium Centre for Reproductive Medicine, UZ Brussel, 1090 Brussels, Belgium
| | - K Jacobs
- Research Group Reproduction and Genetics, Vrije Universiteit Brussel, 1090 Brussels, Belgium Centre for Reproductive Medicine, UZ Brussel, 1090 Brussels, Belgium
| | - C Ortega-Hrepich
- Research Group Reproduction and Genetics, Vrije Universiteit Brussel, 1090 Brussels, Belgium Centre for Reproductive Medicine, UZ Brussel, 1090 Brussels, Belgium
| | - R B Gilchrist
- Discipline of Obstetrics & Gynaecology, School of Women's & Children's Health, University of New South Wales, Sydney, Australia
| | - J G Thompson
- Robinson Research Institute, School of Paediatrics and Reproductive Health, ARC Centre of Excellence for Nanoscale BioPhotonics, The University of Adelaide, Adelaide, Australia
| | - M De Vos
- Research Group Reproduction and Genetics, Vrije Universiteit Brussel, 1090 Brussels, Belgium Centre for Reproductive Medicine, UZ Brussel, 1090 Brussels, Belgium Research Group Follicle Biology, Vrije Universiteit Brussel, 1090 Brussels, Belgium
| | - J Smitz
- Research Group Follicle Biology, Vrije Universiteit Brussel, 1090 Brussels, Belgium
| | - K Sermon
- Research Group Reproduction and Genetics, Vrije Universiteit Brussel, 1090 Brussels, Belgium Centre for Reproductive Medicine, UZ Brussel, 1090 Brussels, Belgium
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Chen H, Lv JQ, Ge HS, Wu XM, Xi HT, Chi HH, Zhu CF, Huang JY. Live birth following vitrification of in vitro matured oocytes derived from sibling smaller follicles at follicle selection phase in the context of in vitro fertilization. Gynecol Endocrinol 2014; 30:624-6. [PMID: 24734870 DOI: 10.3109/09513590.2014.912266] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In ovarian stimulation, a 31-year-old woman with polycystic ovary syndrome was at the risk of developing ovarian hyperstimulation syndrome, follicle aspiration was performed, and eight immature oocytes were collected from follicle fluids. After 28 h in vitro culture, six of them reached MII and were vitrified. The patient failed to conceive in her fresh in vitro fertilization cycle and next two replacement cycles. In the third replacement cycle, a successful pregnancy was obtained by vitrified-thawed oocytes. This case demonstrates that follicular aspiration during follicle selection phase has protective effects against developing ovarian hyperstimulation syndrome, and rescued immature oocytes are viable and could produce promising embryos for live birth.
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Affiliation(s)
- Hua Chen
- Reproductive Medicine Center, The Second Affiliated Hospital of WenZhou Medical University , WenZhou , China
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Hiura H, Okae H, Chiba H, Miyauchi N, Sato F, Sato A, Arima T. Imprinting methylation errors in ART. Reprod Med Biol 2014; 13:193-202. [PMID: 25298744 PMCID: PMC4182590 DOI: 10.1007/s12522-014-0183-3] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 05/19/2014] [Indexed: 02/04/2023] Open
Abstract
There has been an increase in incidence reports of rare imprinting disorders associated with assisted reproductive technology (ART). ART, including in vitro fertilization and intracytoplasmic sperm injections, is an important treatment for infertile people of reproductive age and increasingly produces children. The identification of epigenetic changes at imprinted loci in ART infants has led to the suggestion that ART techniques themselves may predispose embryos to acquire imprinting errors and diseases. In this review, we note that the particular steps of ART may be prone to induction of imprinting methylation errors during gametogenesis, fertilization and early embryonic development. In addition, we explain imprint-associated diseases and their causes. Moreover, from a Japanese nationwide epidemiological study of imprint-associated diseases, we determine their associations with ART. Epigenetic studies will be required to understand the pathogenesis, ART-related risk factor(s) and what precautions can be taken to prevent the occurrence of input methylation errors. We hope that the constitution of children born after each ART procedure will reveal the safest and most ethical approach to use, which will be invaluable for the future development of standard ART.
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Affiliation(s)
- Hitoshi Hiura
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai, 980-8575 Japan
| | - Hiroaki Okae
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai, 980-8575 Japan
| | - Hatsune Chiba
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai, 980-8575 Japan
| | - Naoko Miyauchi
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai, 980-8575 Japan
| | - Fumi Sato
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai, 980-8575 Japan
| | - Akiko Sato
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai, 980-8575 Japan
| | - Takahiro Arima
- Department of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai, 980-8575 Japan
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Álvarez-Guerrero A, Medrano A, Moreno-Mendoza N. Characterization of gametes in two phyllostomid bat species: Artibeus jamaicensis and Sturnira lilium. Anim Reprod Sci 2014; 145:170-81. [DOI: 10.1016/j.anireprosci.2014.01.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 01/27/2014] [Accepted: 01/31/2014] [Indexed: 11/30/2022]
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Ikeda S, Yamada M. Midkine and cytoplasmic maturation of mammalian oocytes in the context of ovarian follicle physiology. Br J Pharmacol 2014; 171:827-36. [PMID: 23889362 PMCID: PMC3925021 DOI: 10.1111/bph.12311] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2013] [Revised: 07/12/2013] [Accepted: 07/21/2013] [Indexed: 12/14/2022] Open
Abstract
UNLABELLED Midkine (MK) was originally characterized as a member of a distinct family of neurotrophic factors functioning in the CNS. However, it was later discovered that MK is abundantly expressed in ovarian follicles. Since then, the physiological roles of this molecule in the ovary have been steadily investigated. During the in vitro maturation (IVM) of oocytes MK was shown to promote the cytoplasmic maturation of oocytes, as indicated by post-fertilization development. This effect of MK could be mediated via its pro-survival (anti-apoptotic) effects on the cumulus-granulosa cells that surround oocytes. The oocyte competence-promoting effects of MK are discussed in the context of the recently discovered involvement of MK in the full maturation of ovarian follicles. MK was at the frontline of a new paradigm for neurotrophic factors as oocytetrophic factors. MK may promote the developmental competence of oocytes via common signalling molecules with the other neurotrophic factor(s). Alternatively or concomitantly, MK may also interact with various transmembrane molecules on cumulus-granulosa cells, which are important for ovarian follicle growth, dominance and differentiation, and act as a unique pro-survival factor in ovarian follicles, such that MK promotes oocyte competence. MK, along with other ovarian neurotrophic factors, may contribute to the optimization of the IVM system. LINKED ARTICLES This article is part of a themed section on Midkine. To view the other articles in this section visit http://dx.doi.org/10.1111/bph.2014.171.issue-4.
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Affiliation(s)
| | - Masayasu Yamada
- Laboratory of Reproductive Biology Graduate School of Agriculture, Kyoto UniversityKyoto, Japan
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39
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A new treatment to avoid severe ovarian hyperstimulation utilizing insights from in vitro maturation therapy. J Assist Reprod Genet 2013; 31:195-8. [PMID: 24293115 DOI: 10.1007/s10815-013-0143-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Accepted: 11/14/2013] [Indexed: 10/26/2022] Open
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Behaviour of cytoplasmic organelles and cytoskeleton during oocyte maturation. Reprod Biomed Online 2013; 28:284-99. [PMID: 24444815 DOI: 10.1016/j.rbmo.2013.10.016] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 10/16/2013] [Accepted: 10/17/2013] [Indexed: 11/21/2022]
Abstract
Assisted reproduction technology (ART) has become an attractive option for infertility treatment and holds tremendous promise. However, at present, there is still room for improvement in its success rates. Oocyte maturation is a process by which the oocyte becomes competent for fertilization and subsequent embryo development. To better understand the mechanism underlying oocyte maturation and for the future improvement of assisted reproduction technology, this review focuses on the complex processes of cytoplasmic organelles and the dynamic alterations of the cytoskeleton that occur during oocyte maturation. Ovarian stimulation and in-vitro maturation are the major techniques used in assisted reproduction technology and their influence on the organelles of oocytes is also discussed. Since the first birth by assisted reproduction treatment was achieved in 1978, numerous techniques involved in assisted reproduction have been developed and have become attractive options for infertility treatment. However, the unsatisfactory success rate remains as a main challenge. Oocyte maturation is a process by which the oocyte becomes competent for fertilization and subsequent embryo development. Oocyte maturation includes both nuclear and cytoplasmic maturation. Nuclear maturation primarily involves chromosomal segregation, which has been well studied, whereas cytoplasmic maturation involves a series of complicated processes, and there are still many parts of this process that remain controversial. Ovarian stimulation and in-vitro maturation (IVM) are the major techniques of assisted reproduction. The effect of ovarian stimulation or IVM on the behaviour of cell organelles of the oocyte has been postulated as the reason for the reduced developmental potential of in-vitro-produced embryos. To further understanding of the mechanism of oocyte maturation and future improvement of assisted reproduction treatment, the complex events of cytoplasmic organelles and the cytoskeleton that occur during oocyte maturation and the influence of ovarian stimulation and IVM on these organelles are described in this review.
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Pongsuthirak P, Vutyavanich T. Developmental competence of human embryos derived from in vitro maturation of immature oocytes retrieved during cesarean section. J Obstet Gynaecol Res 2013; 40:459-64. [PMID: 24118307 DOI: 10.1111/jog.12186] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 05/13/2013] [Indexed: 11/26/2022]
Abstract
AIM To investigate the developmental competence of human embryos that originated from in vitro matured oocytes retrieved during cesarean section. METHODS Immature oocytes were collected from 95 pregnant women, who underwent cesarean section at Buddhachinaraj Hospital Medical School and consented to participate in the study. Retrieved oocytes were cultured in blastocyst medium supplemented with 75 IU/L of human menopausal gonadotropin. Oocyte maturation was assessed at 30 and 48 h after culture. In vitro matured oocytes were inseminated by intracytoplasmic sperm injection and cultured up to 144 h. The fertilization, cleavage and blastocyst formation rates were observed. RESULTS Maturation rate of oocytes after 30 h of culture was 67.9% compared with 13.1% at 48 h (P < 0.0001). Insemination of oocytes in both groups resulted in similar fertilization, cleavage and blastocyst formation rates. CONCLUSION A large proportion of oocytes retrieved at the time of cesarean section exhibited the capacity to undergo maturation in vitro. They can be fertilized and developed into good-quality blastocyst stage.
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Ortega-Hrepich C, Stoop D, Guzmán L, Van Landuyt L, Tournaye H, Smitz J, De Vos M. A “freeze-all” embryo strategy after in vitro maturation: a novel approach in women with polycystic ovary syndrome? Fertil Steril 2013; 100:1002-7. [DOI: 10.1016/j.fertnstert.2013.06.018] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Revised: 05/25/2013] [Accepted: 06/11/2013] [Indexed: 11/28/2022]
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Effect of phosphodiesterase type 3 inhibitor on nuclear maturation and in vitro development of ovine oocytes. Theriogenology 2013; 80:302-12. [DOI: 10.1016/j.theriogenology.2013.04.012] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2013] [Revised: 04/15/2013] [Accepted: 04/15/2013] [Indexed: 11/18/2022]
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Levi M, Ghetler Y, Shulman A, Shalgi R. Morphological and molecular markers are correlated with maturation-competence of human oocytes. Hum Reprod 2013; 28:2482-9. [PMID: 23787211 DOI: 10.1093/humrep/det261] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
STUDY QUESTION Does the position of the germinal vesicle (GV) in human oocytes correlate with molecular and morphological parameters as well as with maturation-competence? SUMMARY ANSWER The position of GV in human oocytes correlates with density of microtubule (MT) filaments, concentration of Fyn, nucleolus localization and the ability of the oocytes to complete maturation following GV breakdown (GVBD). WHAT IS KNOWN ALREADY Our knowledge is confined to oocytes of young mice where maturation-competence is correlated with a central GV and regulated by MTs and the presence of a chromatin ring. Fyn kinase is localized at the spindle and cortex of mouse oocytes and plays a role in both maturation and MT stabilization. STUDY DESIGN, SIZE, DURATION Spatial localization of the GV and nucleolus (central or peripheral), the presence of a chromatin ring, the localization of Fyn, MT density and oocyte maturation were assessed in 153 human oocytes, 335 oocytes from young mice (2-month-old) and 146 oocytes from old mice (12-month-old). PARTICIPANTS/MATERIALS, SETTING, METHODS GV human oocytes were donated by consenting female patients (n = 57), 21-45-year-old undergoing IVF/ICSI. As a control, GV mouse oocytes were collected from female mice after injection of pregnant mares' serum gonadotrophin. Human and mouse GV oocytes allocated for immunocytochemistry were fixed on day of retrieval, stained with specific antibodies and imaged using a confocal laser-scanning microscope. Human and mouse oocytes allocated for maturation were incubated for 48 and 24 h, respectively. GVBD and extrusion of the first polar body (PBI) were assessed using differential interference contrast optics. MAIN RESULTS AND THE ROLE OF CHANCE GV location was peripheral and independent of age in 69.9% of the human oocytes, but GV location did vary with age in mice oocytes; it was central in 89.9% of the oocytes retrieved from young-mice and peripheral in 52.1% of the oocytes retrieved from old mice (P < 0.05). A central GV, whether in human or mouse oocytes, was highly correlated with a central nucleolus, absence of Fyn at the GV and a dense MT network (P < 0.05), whereas a peripheral GV correlated with peripheral nucleolus, presence of Fyn at the GV and a flimsy MT network. After 48 h in culture, no degeneration was observed in human central-GV oocytes, however, 12/95 (12.6%) of the peripheral-GV oocytes degenerated (P < 0.05). No correlation was observed between GV position and presence of a chromatin ring. The percentage of human oocytes that extruded the PBI after completing GVBD was significantly higher (73.7%) in central than in peripheral-GV oocytes (45.8%; P < 0.05). In mice oocytes, central location of the GV correlated with maturation competence in young (P < 0.05) but not old mice. LIMITATIONS, REASONS FOR CAUTION The fact that the human GV oocytes used in this study were exposed to gonadotrophic stimulation but failed to mature in vivo might be a sign of their low quality and this should be considered when drawing conclusions from the data. Furthermore, our observation that only peripheral-GV human oocytes were degraded may indicate that they are of a lower quality than central-GV human oocytes. WIDER IMPLICATIONS OF THE FINDINGS We suggest that the central location of GV within the oocytes, which is associated with an absence of Fyn at the GV and the presence of thick filamentous MTs in the ooplasm, may serve as a predictor of successful maturation and provide new insights for the use of IVM.
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Affiliation(s)
- M Levi
- Department of Cell and Developmental Biology, Tel Aviv University, Tel-Aviv, Israel.
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Estrogen-suppressed in vitro maturation: a novel approach to in vitro maturation. Fertil Steril 2013; 99:1886-90. [DOI: 10.1016/j.fertnstert.2013.01.148] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Revised: 01/29/2013] [Accepted: 01/30/2013] [Indexed: 11/19/2022]
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A comparison of the Cook single lumen immature ovum IVM needle to the Steiner-Tan pseudo double lumen flushing needle for oocyte retrieval for IVM. J Assist Reprod Genet 2013; 30:855-60. [PMID: 23644950 DOI: 10.1007/s10815-013-0006-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2013] [Accepted: 04/22/2013] [Indexed: 10/26/2022] Open
Abstract
PURPOSE This study compared the impact of using the Steiner-Tan pseudo double lumen needle for antral follicle oocyte retrieval to using a conventional non-flushing needle. The Steiner-Tan needle has a much smaller dead space than the needles commonly used for IVM oocyte retrievals. METHODS This was a retrospective cohort study. The patient population was determined by the time period in which a patient underwent IVM in a single physician's IVF practice. The following data was abstracted from clinical and embryology records: oocytes retrieved, oocytes matured, early maturing oocytes, oocytes fertilized, embryo quality measures, retrieval time, needle punctures, clot formation, and clinical pregnancy rate. RESULTS The Steiner-Tan needle did not increase the number of oocytes retrieved. It also did not increase the time required for retrieval. However, flushing of antral follicles significantly decreased clot formation in fluid aspirates. Use of the Steiner-Tan needle also significantly decreased the number of vaginal needle punctures during each case. There was a trend toward improved embryo quality, but statistical power was inadequate to show a difference. CONCLUSIONS The primary benefit of the Steiner-Tan needle was on the embryological aspects of IVM. Decreased blood and blood clots in the aspirates made an IVM retrieval more like conventional IVF for the embryologist. The patient also experienced less tissue trauma without increasing anesthesia or surgical time. There was no improvement in the number of oocytes retrieved, but based on the results, we hypothesized that oocytes were more commonly retrieved from slightly large follicles than when using a routine needle.
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Polar body fragmentation in IVM oocytes is associated with impaired fertilization and embryo development. J Assist Reprod Genet 2013; 30:679-82. [PMID: 23532359 DOI: 10.1007/s10815-013-9982-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Accepted: 03/12/2013] [Indexed: 10/27/2022] Open
Abstract
PURPOSE The significance of finding a fragmented first polar body in an oocyte prepared for ICSI is controversial with most recent publications suggesting that it is not prognostic for oocyte fertilization or embryo development. Our purpose was to look at this question in the context of oocytes not stimulated for conventional IVF. METHODS Oocytes obtained for IVM and obtained from follicles at most 12 mm in diameter were evaluated for their polar body morphology soon after they entered metaphase II when they were denuded in preparation for ICSI. Records were evaluated retrospectively for the fertilization rate and the embryo growth rate (cell number) on each day of development for embryos with normal appearing polar bodies or fragmented polar bodies, but no other cytoplasmic dysmorphisms. RESULTS Oocytes with fragmented polar bodies were significantly less likely to fertilize than oocytes with normal appearing polar bodies (p < 0.0001). Embryos which developed from oocytes with fragmented polar bodies had significantly impaired growth compared to embryos that developed from oocytes with normal appearing polar bodies (p = 0.0328). CONCLUSIONS Fragmented polar bodies likely reflect cytoplasmic incompetence.
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Reddy J, Oktay K. Ovarian stimulation and fertility preservation with the use of aromatase inhibitors in women with breast cancer. Fertil Steril 2012; 98:1363-9. [DOI: 10.1016/j.fertnstert.2012.09.022] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Revised: 09/12/2012] [Accepted: 09/13/2012] [Indexed: 11/25/2022]
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Salama M, Winkler K, Murach KF, Seeber B, Ziehr SC, Wildt L. Female fertility loss and preservation: threats and opportunities. Ann Oncol 2012; 24:598-608. [PMID: 23129121 DOI: 10.1093/annonc/mds514] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Ovarian aging and cytotoxic treatments are the most common causes for fertility loss in women. With increasing numbers of young female survivors following cytotoxic cancer treatments, the issue of fertility preservation has assumed greater importance. METHODS We review the literature on the causes of female fertility loss as well as the recent advances in fertility preservation options and strategies that might be of interest to oncologists. Currently, several methods and techniques exist for fertility preservation of female patients with cancer including embryo freezing, ovarian protection techniques, oocyte cryopreservation, ovarian tissue cryopreservation followed by autotransplantation, and recently in vitro culture of ovarian tissue, follicles, and oocytes. Each method or technique has advantages and disadvantages related to current success rate, required delay in cancer treatment, sperm requirement, and risk of reintroducing cancer cells. RESULTS To date, embryo freezing is the only established method successfully and widely used for fertility preservation of female patients with cancer. The other methods are promising but still considered experimental. CONCLUSION Patient awareness, physician knowledge, early counseling, costs management, international registry, interdisciplinary networks, and research development are necessary to improve the current care in the field of female fertility preservation.
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Affiliation(s)
- M Salama
- Department of Gynecological Endocrinology and Reproductive Medicine, Innsbruck Medical University, A-6020 Innsbruck, Austria
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