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Mizobe Y, Kuwatsuru Y, Kuroki Y, Fukumoto Y, Tokudome M, Moewaki H, Iwakawa T, Takeuchi K. Effects of first and second division modes on euploidy acquisition in human embryo. Syst Biol Reprod Med 2024; 70:52-58. [PMID: 38426509 DOI: 10.1080/19396368.2024.2311643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 01/16/2024] [Indexed: 03/02/2024]
Abstract
The aim of this study was to non-invasively investigate euploid embryos using methods other than pre-implantation genetic testing for aneuploidy. The study focused on direct cleavage (DC) observed during early embryo development. We also investigated the relationship between the mode of early embryo division and embryo ploidy. Embryos were divided into the normal cleavage (NC) and DC groups, and the DC group was further subdivided into the DC-First (DC-F) and DC-Second (DC-S) groups, depending on whether DC was observed at the first or second cleavage, respectively. The acquisition rates of euploid embryos and embryos appropriate for transfer were compared between the groups. Our results revealed that the timing of the first division did not differ between blastocyst grades or in embryos with varying degrees of ploidy. Further, the timing of the first cleavage did not affect the acquisition rate of embryos appropriate for transfer and euploid embryo formation rate did not significantly differ between the DC and NC groups. We also noted that for embryos appropriate for transfer, euploidy acquisition rate did not differ significantly between the DC and NC groups. Further, the euploidy acquisition rate of embryos did not differ between the DC-F and DC-S groups. However, the acquisition rate of embryos appropriate for transfer, including those with low mosaicism, was significantly higher in the DC-S group than in the DC-F group. These findings indicated that the number of good-quality blastocysts formed was significantly higher in the NC group than in the DC group and the acquisition rate of embryos appropriate for transfer, including those with low mosaicism, was significantly higher in the DC-S group than in the DC-F group.
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Affiliation(s)
- Yamato Mizobe
- Takeuchi Ladies Clinic/Center for Reproductive Medicine, Kagoshima, Japan
| | - Yukari Kuwatsuru
- Takeuchi Ladies Clinic/Center for Reproductive Medicine, Kagoshima, Japan
| | - Yuko Kuroki
- Takeuchi Ladies Clinic/Center for Reproductive Medicine, Kagoshima, Japan
| | - Yumiko Fukumoto
- Takeuchi Ladies Clinic/Center for Reproductive Medicine, Kagoshima, Japan
| | - Mari Tokudome
- Takeuchi Ladies Clinic/Center for Reproductive Medicine, Kagoshima, Japan
| | - Harue Moewaki
- Takeuchi Ladies Clinic/Center for Reproductive Medicine, Kagoshima, Japan
| | - Tokiko Iwakawa
- Takeuchi Ladies Clinic/Center for Reproductive Medicine, Kagoshima, Japan
| | - Kazuhiro Takeuchi
- Takeuchi Ladies Clinic/Center for Reproductive Medicine, Kagoshima, Japan
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2
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Zou H, Wang R, Morbeck DE. Diagnostic or prognostic? Decoding the role of embryo selection on in vitro fertilization treatment outcomes. Fertil Steril 2024; 121:730-736. [PMID: 38185198 DOI: 10.1016/j.fertnstert.2024.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 12/22/2023] [Accepted: 01/03/2024] [Indexed: 01/09/2024]
Abstract
In this review, we take a fresh look at embryo assessment and selection methods from the perspective of diagnosis and prognosis. On the basis of a systematic search in the literature, we examined the evidence on the prognostic value of different embryo assessment methods, including morphological assessment, blastocyst culture, time-lapse imaging, artificial intelligence, and preimplantation genetic testing for aneuploidy.
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Affiliation(s)
- Haowen Zou
- Department of Obstetrics and Gynaecology, Monash University, Melbourne, Victoria, Australia
| | - Rui Wang
- Department of Obstetrics and Gynaecology, Monash University, Melbourne, Victoria, Australia
| | - Dean E Morbeck
- Department of Obstetrics and Gynaecology, Monash University, Melbourne, Victoria, Australia; Principle, Morbeck Consulting Ltd, Auckland, New Zealand.
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Hillyear LM, Zak LJ, Beckitt T, Griffin DK, Harvey SC, Harvey KE. Morphokinetic Profiling Suggests That Rapid First Cleavage Division Accurately Predicts the Chances of Blastulation in Pig In Vitro Produced Embryos. Animals (Basel) 2024; 14:783. [PMID: 38473168 DOI: 10.3390/ani14050783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 02/27/2024] [Accepted: 02/28/2024] [Indexed: 03/14/2024] Open
Abstract
The study of pig preimplantation embryo development has several potential uses: from agriculture to the production of medically relevant genetically modified organisms and from rare breed conservation to acting as a physiologically relevant model for progressing human and other (e.g., endangered) species' in vitro fertilisation technology. Despite this, barriers to the widespread adoption of pig embryo in vitro production include lipid-laden cells that are hard to visualise, slow adoption of contemporary technologies such as the use of time-lapse incubators or artificial intelligence, poor blastulation and high polyspermy rates. Here, we employ a commercially available time-lapse incubator to provide a comprehensive overview of the morphokinetics of pig preimplantation development for the first time. We tested the hypotheses that (a) there are differences in developmental timings between blastulating and non-blastulating embryos and (b) embryo developmental morphokinetic features can be used to predict the likelihood of blastulation. The abattoir-derived oocytes fertilised by commercial extended semen produced presumptive zygotes were split into two groups: cavitating/blastulating 144 h post gamete co-incubation and those that were not. The blastulating group reached the 2-cell and morula stages significantly earlier, and the time taken to reach the 2-cell stage was identified to be a predictive marker for blastocyst formation. Reverse cleavage was also associated with poor blastulation. These data demonstrate the potential of morphokinetic analysis in automating and upscaling pig in vitro production through effective embryo selection.
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Affiliation(s)
- Lucy M Hillyear
- School of Psychology and Life Sciences, Canterbury Christ Church University, Canterbury CT1 1QU, UK
| | - Louisa J Zak
- Topigs Norsvin Research Center, Meerendonkweg 25, 5216 TZ Den Bosch, The Netherlands
| | | | - Darren K Griffin
- School of Biosciences, University of Kent, Canterbury CT2 7NJ, UK
| | - Simon C Harvey
- Faculty of Engineering and Science, University of Greenwich, Medway ME4 4TB, UK
| | - Katie E Harvey
- School of Life, Health and Chemical Sciences, The Open University, Milton Keynes MK7 6AA, UK
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Garcia-Belda A, Cairó O, Martínez-Moro Á, Cuadros M, Pons MC, de Mendoza MVH, Delgado A, Rives N, Carrasco B, Cabello Y, Figueroa MJ, Cascales-Romero L, González-Soto B, Cuevas-Saiz I. Considerations for future modification of The Association for the Study of Reproductive Biology embryo grading system incorporating time-lapse observations. Reprod Biomed Online 2024; 48:103570. [PMID: 37952277 DOI: 10.1016/j.rbmo.2023.103570] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 09/13/2023] [Accepted: 09/19/2023] [Indexed: 11/14/2023]
Abstract
The Association for the Study of Reproductive Biology (ASEBIR) Interest Group in Embryology (in Spanish 'Grupo de Interés de Embriología') reviewed key morphokinetic parameters to assess the contribution of time-lapse technology (TLT) to the ASEBIR grading system. Embryo grading based on morphological characteristics is the most widely used method in human assisted reproduction laboratories. The introduction and implementation of TLT has provided a large amount of information that can be used as a complementary tool for morphological embryo evaluation and selection. As part of IVF treatments, embryologists grade embryos to decide which embryos to transfer or freeze. At the present, the embryo grading system developed by ASEBIR does not consider dynamic events observed through TLT. Laboratories that are using TLT consider those parameters as complementary data for embryo selection. The aim of this review was to evaluate review time-specific morphological changes during embryo development that are not included in the ASEBIR scoring system, and to consider them as candidates to add to the scoring system.
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Affiliation(s)
| | | | - Álvaro Martínez-Moro
- IVF Spain Madrid, Madrid, Spain.; Animal Reproduction Department, INIA-CSIC, Madrid, Spain
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Yang T, Yuan X, Xue Q, Sun L, Xu T, Chen Y, Shi D, Li X. Comparison of symmetrical and asymmetrical cleavage 2-cell embryos of porcine by Smart-seq2. Theriogenology 2023; 210:221-226. [PMID: 37540954 DOI: 10.1016/j.theriogenology.2023.07.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 07/22/2023] [Accepted: 07/22/2023] [Indexed: 08/06/2023]
Abstract
Early cleavage (EC) influences the development of the pre-implantation and post-implantation embryo. Symmetric cleavage (Sym) and asymmetric cleavage (Asy) have been observed in EC, but its molecular mechanism remains unclear. This study was designed to pick out the key candidate genes and signaling pathway between Sym and Asy embryos by applying Smart-seq2 technique. In in-vitro fertilization (IVF) 2-cell embryos, Sym embryos and Asy embryos accounted for 62.55% and 37.45%, respectively. The 2-cell rate, blastocyst rate and total blastocyst cells of Sym group were significantly higher than those of Asy group (31.38% vs 18.79%, 47.55% vs 29.5%, 71.33 vs 33.67, P < 0.05). The 2-cell rate, blastocyst rate and total blastocyst cell number in parthenogenetic activation (PA) embryos in Sym group were significantly higher than those in Asy group (40.61% vs 23.64%, 63.15% vs 30.11%, 50.75 vs 40.5, P < 0.05). A total of 216 differentially expressed genes (DEGs) incorporating 147 genes up-regulated and 69 genes down-regulated genes were screened under the p-value <0.05 and |log2 (fold change)| ≥ 1 when compared with Sym group. Further Gene Ontology (GO) analysis showed that these DEGs were related to the regulation of metabolic process, cell cycle, chromosome segregation, centromeric region and microtubule cytoskeleton. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis revealed that the DEGs were mainly enriched to oocyte meiosis, cell cycle, p53 and Hippo signaling pathways. We concluded that asymmetric cleavage is a consequence of altered gene expression. Atg4c, Sesn2, Stk11ip, Slc25a6, Cep19 and Cep55 associated with mitochondrial function and cytoskeletal structure were probably the key candidate genesto determine the zygote cleavage pattern.
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Affiliation(s)
- Ting Yang
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Xi Yuan
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Qingsong Xue
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Le Sun
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Tairan Xu
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Yuan Chen
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Deshun Shi
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China
| | - Xiangping Li
- Guangxi Key Laboratory of Animal Breeding and Disease Control, Guangxi University, Nanning, 530005, China.
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Zhu F, Lu X, Jiang Y, Wang D, Pan L, Jia C, Zhang L, Xie Y, Zhao M, Liu H, Wang M, Wang T, Liu H, Li J. Proteomics reveals the underlying mechanism by which the first uneven division affects embryonic development in pig. Theriogenology 2023; 210:42-52. [PMID: 37473595 DOI: 10.1016/j.theriogenology.2023.07.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 07/13/2023] [Accepted: 07/14/2023] [Indexed: 07/22/2023]
Abstract
One of the most typical abnormal cleavage patterns during early embryonic development is uneven division, but the first uneven division of pig zygote is common. Uneven division results in different daughter cell sizes and an uneven distribution of organelles such as lipid droplet, mitochondria, but the developmental capacity of daughter cells and proteomic changes of daughter cells are still unclear. Therefore, the developmental ability and proteomic quantification were investigated on blastomeres from even division (ED) or uneven division (UD) embryos at 2-cell stage in the present study. Firstly, the developmental ability was affected by the blastomeric size, when compared with medium blastomeres (MBs), the large blastomeres (LBs) with the higher cleavage rate but the small blastomeres (SBs) with the lower rate was observed. Subsequently, proteomic analysis was performed on blastomeres of LBs, MBs and SBs, a total of 109 DEPs were detected, which were involved in protein metabolism and processing, energy metabolism and ribosome. In particular, DEPs in LBs vs. SBs were focused on RNA binding and actin cytoskeletal tissue. Two protein-dense networks associated with RNA binding and cytoskeleton were revealed by further protein-protein interaction (PPI) analysis of DEPs in LBs vs. SBs, that DDX1 related to RNA binding and ACTB related to cytoskeleton were confirmed in UD embryos. Therefore, a briefly information of DEPs in blastomeres of 2-cell stage pig embryos was described in the present study, and it further confirmed that the formation of uneven division of the first cell cycle of pig embryos might be controlled by the cytoskeleton; the developmental capacity of daughter cells might be affected by the energy metabolism, RNA binding and ribosome, and further account for the developmental potential of the whole embryo.
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Affiliation(s)
- Fuquan Zhu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China
| | - Xinyue Lu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China
| | - Yuan Jiang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China
| | - Dayu Wang
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China
| | - Linqing Pan
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China
| | - Chao Jia
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China
| | - Lin Zhang
- Jiangsu Yangyu Ecological Agriculture Co., Ltd, Taixing, 225400, China
| | - Yan Xie
- Taixing Animal Husbandry and Veterinary Center, Taixing, 225400, China
| | - Mingyue Zhao
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China
| | - Huijun Liu
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Zhejiang Institute of Microbiology, Hangzhou, 310012, China
| | - Meixia Wang
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Zhejiang Institute of Microbiology, Hangzhou, 310012, China
| | - Tingzhang Wang
- Key Laboratory of Microbial Technology and Bioinformatics of Zhejiang Province, Zhejiang Institute of Microbiology, Hangzhou, 310012, China
| | - Honglin Liu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China
| | - Juan Li
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210018, China.
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Alhelou Y, Hamdan M, Razali N, Adenan N, Ali J. Novel image analyser-assisted morphometric methodology offer unique opportunity for selection of embryos with potential for implantation. BMC Pregnancy Childbirth 2023; 23:698. [PMID: 37770819 PMCID: PMC10538025 DOI: 10.1186/s12884-023-06025-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 09/23/2023] [Indexed: 09/30/2023] Open
Abstract
BACKGROUND Previous studies looked into the connections between pregnancy and the Zona Pellucida (ZP) thickness and Zona Pellucida Thickness Variation (ZPTV), as well as the embryo's radius, circumference, perimeter and global symmetry. However, no research has linked embryo implantation and pregnancy to the percentage of ZP thinning, the reduction in ooplasm volume, and the increase in perivitelline space (PVS) volume. Our objective is to correlate the percentage of ZP thinning, the percentage of ooplasm volume shrinkage and the percentage of PVS increase to the implantation. These data will be used for embryo selection as well as it can be put into a software that will assist embryo selection. MATERIALS AND METHODS Retrospective study included 281 patients, all of them had 2 embryos transferred, 149 patients got pregnant with two gestation sacs and 132 patients did not get pregnant. All of the transferred embryos had the ZP thickness measured several times from time of ICSI till Embryo Transfer (ET), the ooplasm volume was calculated from time of ICSI till two Pronuclei (2PN) fading and the PVS was calculated from the ICSI time till the 2PN fading. RESULTS The first characteristic is the change in the average ZP thickness that decreased by 32.7% + 5.3% at 70 h for the implanted embryos (Group 1) versus 23.6% + 4.8% for non-implanted embryos (Group 2) p = 0.000. The second characteristic is the average reduction in the volume of the ooplasm which is 20.5% + 4.3% in Group 1 versus 15.1% + 5.2% in Group 2, p = 0.000. The third characteristic is the increase in the volume of the PVS which was 38.1% + 7.6% in Group 1 versus 31.6% + 9.7% in Group 2 p = 0.000. CONCLUSION The implanted embryos showed higher percent of ZP thinning, higher percent of ooplasm reduction and higher percent of PVS increase.
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Affiliation(s)
- Y Alhelou
- FAKIH IVF, Sh Haza Bin Zayed st, Abu Dhabi, United Arab Emirates.
- Department of Obstetrics and Gynaecology, Universiti Malaya, Kuala Lumpur, Malaysia.
| | - M Hamdan
- Department of Obstetrics and Gynaecology, Universiti Malaya, Kuala Lumpur, Malaysia
| | - N Razali
- Department of Obstetrics and Gynaecology, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Nam Adenan
- Department of Obstetrics and Gynaecology, Universiti Malaya, Kuala Lumpur, Malaysia
| | - J Ali
- Department of Obstetrics and Gynaecology, Universiti Malaya, Kuala Lumpur, Malaysia
- IVF Department, Maternity and Children Hospital, Dammam, Saudi Arabia
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Yaacobi-Artzi S, Kalo D, Roth Z. Effect of the aflatoxins B1 and M1 on bovine oocyte developmental competence and embryo morphokinetics. Reprod Toxicol 2023; 120:108437. [PMID: 37422138 DOI: 10.1016/j.reprotox.2023.108437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 06/21/2023] [Accepted: 07/04/2023] [Indexed: 07/10/2023]
Abstract
Aflatoxins are considered as reproductive toxins for mammalian species. Here, we studied the effect of aflatoxin B1 (AFB1) and its metabolite aflatoxin M1 (AFM1) on the development and morphokinetics of bovine embryos. Cumulus oocyte complexes (COCs) were matured with AFB1 (0.032, 0.32, 3.2, 32 µM) or AFM1 (0.015, 0.15, 1.5, 15, 60 nM), then fertilized and the putative zygotes were cultured in an incubator equipped with a time-lapse system. Exposing COCs to 32 µM AFB1 or 60 nM AFM1 reduced the cleavage rate, whereas exposing them to 3.2 or 32 µM AFB1 further reduced the blastocyst formation. A delay was recorded for the first and second cleavages in a dose-dependent manner for both AFB1- and AFM1-treated oocytes. A delay was recorded in the third cleavage in the AFM1-treated group. To explore potential mechanisms, subgroups of COCs were examined for nuclear and cytoplasmic maturation (n = 225; DAPI and FITC-PNA, respectively), and mitochondrial function was examined in a stage-dependent manner. COCs were examined for their oxygen consumption rates (n = 875; Seahorse XFp analyzer) at the end of maturation, MII-stage oocytes were examined for their mitochondrial membrane potential (n = 407; JC1), and putative zygotes were examined using a fluorescent time-lapse system (n = 279; IncuCyte). Exposing COCs to AFB1 (3.2 or 32 µM) impaired oocyte nuclear and cytoplasmic maturation and increased mitochondrial membrane potential in the putative zygotes. These alterations were associated with changes in the expression of mt-ND2 (32 µM AFB1) and STAT3 (all AFM1 concentrations) genes in the blastocyst stage, suggesting a carryover effect from the oocyte to the developing embryos.
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Affiliation(s)
- Shira Yaacobi-Artzi
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, the Hebrew University, Rehovot 7610000, Israel
| | - Dorit Kalo
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, the Hebrew University, Rehovot 7610000, Israel
| | - Zvi Roth
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, the Hebrew University, Rehovot 7610000, Israel.
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Liu D, Li L, Sun N, Zhang X, Yin P, Zhang W, Hu P, Yan H, Zhang Q. Effects of body mass index on IVF outcomes in different age groups. BMC Womens Health 2023; 23:416. [PMID: 37553621 PMCID: PMC10410781 DOI: 10.1186/s12905-023-02540-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 07/12/2023] [Indexed: 08/10/2023] Open
Abstract
BACKGROUND Herein, we aimed to analyse the effects of body mass index (BMI) on the treatment outcomes of in vitro fertilisation (IVF) in a cohort of women undergoing their first IVF cycle. METHODS A total of 2311 cycles from 986 women undergoing their first IVF/intracytoplasmic sperm injection cycle with fresh/frozen embryo transfer between January 2018 and December 2021 at the Center of Reproductive Medicine, Shuguang Hospital affiliated to Shanghai University of Traditional Chinese Medicine, were considered in this retrospective cohort study. First, the included patients were classified into four groups based on their BMI: underweight (BMI < 18.5 kg/m2, 78 patients), normal weight (18.5 ≤ BMI < 24 kg/m2, 721patients), overweight (24 ≤ BMI < 28 kg/m2, 147 patients), and obese (BMI ≥ 28 kg/m2, 40 patients). The IVF outcomes included the Gn medication days; Gn dosage; number of retrieved oocytes, mature oocytes, fertilized oocytes, cleavages, and available embryos and high-quality embryos; implantation rate; clinical pregnancy rate and live birth rate. Next, all the obtained data were segregated into three different subgroups according to the patient age: < 30 years, 30-38 years and > 38 years; the IVF pregnancy outcomes were compared among the groups. RESULTS Compared with the other three groups, the underweight group had a higher number of fertilized oocytes, cleavage and available embryos and a smaller Gn medication days and required a lower Gn dosage. There was no difference in the number of retrieved oocytes and mature oocytes among the groups. Moreover, compared with the women aged 30-38 years in the overweight group, those in the normal weight group had a significantly higher implantation rate, clinical pregnancy rate and live birth rate (p = 0.013 OR 1.75, p = 0.033 OR 1.735, p = 0.020 OR 1.252 respectively). The clinical pregnancy rate was also significantly higher in those aged 30-38 years in the normal weight group than in the obese group (p = 0.036 OR 4.236). CONCLUSIONS Although the BMI can greatly affect the pregnancy outcomes of women aged 30-38 years, it has almost no effects on the outcomes of younger or older women.
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Affiliation(s)
- Dan Liu
- Department of Reproductive Medicine, Shuguang Hospital, affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Li Li
- Department of Reproductive Medicine, Shuguang Hospital, affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ningyu Sun
- Department of Reproductive Medicine, Shuguang Hospital, affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xiaole Zhang
- Department of Gynecology, Shuguang Hospital, affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ping Yin
- Department of Reproductive Medicine, Shuguang Hospital, affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Wuwen Zhang
- Department of Reproductive Medicine, Shuguang Hospital, affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Panwei Hu
- Department of Gynecology, Shuguang Hospital, affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Hua Yan
- Department of Reproductive Medicine, Shuguang Hospital, affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.
| | - Qinhua Zhang
- Department of Reproductive Medicine, Shuguang Hospital, affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.
- Department of Gynecology, Shuguang Hospital, affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, China.
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10
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Herbert SL, Staib C, Wallner T, Löb S, Curtaz C, Schwab M, Wöckel A, Häusler S. Morphokinetic analysis of early human embryonic development and its relationship to endometriosis resection: a retrospective time-lapse study using the KIDScore™ D3 and D5 implantation data algorithm. Arch Gynecol Obstet 2023; 308:587-597. [PMID: 37179499 PMCID: PMC10293388 DOI: 10.1007/s00404-023-07008-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 03/13/2023] [Indexed: 05/15/2023]
Abstract
RESEARCH QUESTION Does complete resection of endometriosis improve embryo quality as assessed by morphokinetic parameters using time-lapse microscopy? DESIGN For this retrospective study we analysed 237 fertilised, cultured and transferred embryos from 128 fresh IVF and/ or ICSI transfer cycles. Endometriosis was confirmed or excluded by laparoscopy. Patients were stimulated with recombinant FSH using GnRH agonist and antagonist protocols. After fertilisation, a time-lapse incubation system was used for observation. Embryo quality was assessed using the KIDScore™ D3 and D5 implantation data algorithm. RESULTS The analysis showed a median KIDScore™ D5 of 2.6 (on a scale of 1 to 9.9) for embryos from patients with endometriosis without complete resection. The control group without endometriosis achieved a score of 6.8 (p = 0.003). The median score for embryos from endometriosis patients with complete resection was 7.2, which was a significant increase compared to embryos from patients without complete resection (p = 0.002). We observed an effect size of r = 0.4 for complete resection versus no resection of endometriosis using the KIDScore™ D5. There were no differences in KIDScore™ D3 between the three patient groups. Pregnancy and miscarriage rates showed the same clinical trends. In three of our four case series of patients who underwent IVF/ ICSI cycles before and after complete resection, we found a marked improvement in embryo quality after complete resection. CONCLUSIONS Complete resection of endometriosis could significantly improve the otherwise poor embryo quality of patients undergoing IVF-procedures. The data, therefore, strongly support recommending surgery to patients with endometriosis prior to assisted reproduction.
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Affiliation(s)
- Saskia-Laureen Herbert
- Department of Obstetrics and Gynaecology, University Medical Centre Würzburg, Josef-Schneider-Straße 4, 97080, Würzburg, Germany.
| | - Claudia Staib
- Department of Obstetrics and Gynaecology, University Medical Centre Würzburg, Josef-Schneider-Straße 4, 97080, Würzburg, Germany
| | - Theresa Wallner
- Department of Obstetrics and Gynaecology, University Medical Centre Würzburg, Josef-Schneider-Straße 4, 97080, Würzburg, Germany
| | - Sanja Löb
- Department of Obstetrics and Gynaecology, University Medical Centre Würzburg, Josef-Schneider-Straße 4, 97080, Würzburg, Germany
| | - Carolin Curtaz
- Department of Obstetrics and Gynaecology, University Medical Centre Würzburg, Josef-Schneider-Straße 4, 97080, Würzburg, Germany
| | - Michael Schwab
- Department of Obstetrics and Gynaecology, University Medical Centre Würzburg, Josef-Schneider-Straße 4, 97080, Würzburg, Germany
| | - Achim Wöckel
- Department of Obstetrics and Gynaecology, University Medical Centre Würzburg, Josef-Schneider-Straße 4, 97080, Würzburg, Germany
| | - Sebastian Häusler
- Department of Obstetrics and Gynaecology, University Medical Centre Würzburg, Josef-Schneider-Straße 4, 97080, Würzburg, Germany
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11
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Ouyang Y, Peng Y, Zhang S, Gong F, Li X. A simple scoring system for the prediction of early pregnancy loss developed by following 13,977 infertile patients after in vitro fertilization. Eur J Med Res 2023; 28:237. [PMID: 37452358 PMCID: PMC10347825 DOI: 10.1186/s40001-023-01218-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 07/09/2023] [Indexed: 07/18/2023] Open
Abstract
A retrospective study was conducted to investigate a convenient simple scoring system for the prediction of early pregnancy loss (EPL) based on simple demographics. A total of 13,977 women undergoing transvaginal ultrasound scans on Days 27-29 after in vitro fertilization-embryo transfer (IVF-ET) from June 2016 and December 2017 were included. The first trimester pregnancy outcome was recorded at 12 weeks of gestation. The areas under the curve of this scoring system were 0.884 (95% confidence interval (CI) 0.870-0.899) and 0.890 (95% CI 0.878-0.903) in the training set and test set, respectively. The score totals ranged from -8 to 14 points. A score of 5 points, which offered the highest predictive accuracy (94.01%) and corresponded to a 30% miscarriage risk, was chosen as the cutoff value, with a sensitivity of 62.84%, specificity of 98.79%, positive predictive value (PPV) of 88.87% and negative predictive value (NPV) of 94.54% for the prediction of EPL in the training set. In the test set, a score of 5 points had a sensitivity of 64.69%, specificity of 98.78%, PPV of 89.87% and NPV of 93.62%, and 93.91% of the cases were correctly predicted. Therefore, the simple scoring system using conventionally collected data can be conveniently used to predict EPL after ET. However, considering the limitations, its predictive value needs to be further verified in future clinical practice.
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Affiliation(s)
- Yan Ouyang
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
- Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha, China
| | - Yangqin Peng
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
- Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha, China
| | - Senmao Zhang
- Department of Epidemiology and Health Statistics, Xiangya School of Public Health, Central South University, Changsha, China
| | - Fei Gong
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China
- Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha, China
| | - Xihong Li
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, China.
- Clinical Research Center For Reproduction and Genetics in Hunan Province, Changsha, China.
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12
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Li D, Parmegiani L, Yang D, Vajta G, Li R. Expert consensus on the morphological evaluation of human cleavage-stage embryos and blastocysts. Chin Med J (Engl) 2023; 136:1009-1011. [PMID: 37185360 PMCID: PMC10228470 DOI: 10.1097/cm9.0000000000002609] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Indexed: 05/17/2023] Open
Affiliation(s)
- Da Li
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Key Laboratory of Reproductive and Genetic Medicine (China Medical University), National Health Commission, Shenyang, Liaoning 110004, China
| | | | - Dalei Yang
- Center of Reproductive Medicine, Shengjing Hospital of China Medical University, Key Laboratory of Reproductive and Genetic Medicine (China Medical University), National Health Commission, Shenyang, Liaoning 110004, China
| | | | - Rong Li
- Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, National Clinical Research Center for Obstetrics and Gynecology (Peking University Third Hospital), Key Laboratory of Assisted Reproduction (Peking University), Ministry of Education, Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing 100084, China
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13
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Angel-Velez D, De Coster T, Azari-Dolatabad N, Fernández-Montoro A, Benedetti C, Pavani K, Van Soom A, Bogado Pascottini O, Smits K. Embryo morphokinetics derived from fresh and vitrified bovine oocytes predict blastocyst development and nuclear abnormalities. Sci Rep 2023; 13:4765. [PMID: 36959320 PMCID: PMC10036495 DOI: 10.1038/s41598-023-31268-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 03/08/2023] [Indexed: 03/25/2023] Open
Abstract
Embryo development is a dynamic process and critical stages may go unnoticed with the use of traditional morphologic assessments, especially the timing of embryonic divisions and aberrant zygotic cleavage patterns. Bovine embryo development is impaired after oocyte vitrification, but little is known about the underlying morphokinetic behavior. Here, bovine zygotes from fresh (n = 708) and vitrified oocytes (n = 182) were monitored by time-lapse imaging and the timing and nature of early blastomere divisions were modeled to find associations with blastocyst development at day 8. The predictive potential of morphokinetic parameters was analyzed by logistic regression and receiver operating characteristic curve analysis to determine optimal cut-off values. Lag-phase was highly correlated with embryo development. Remarkably, 100% of zygotes that reached the blastocyst stage showed a lag-phase. Fast first cleavage increased the chance of blastocyst development to 30% with a cut-off of 32 h and 22 min. Aberrant zygotic cleavage events, including multipolar division, unequal blastomere sizes, and membrane ruffling resulted in decreased blastocyst development. Multipolar division leads to uneven blastomeres, which was associated with anuclear and multinuclear blastomeres, indicating genome segregation errors. Moreover, we described for the first time morphokinetics of embryos derived from vitrified bovine oocytes. Vitrification severely affected blastocyst development, although lower cryoprotectant concentration in equilibration solutions seems to be less detrimental for embryo yield. Impaired development was linked to slow cleavages, lower lag-phase incidence, and increased early embryonic arrest. Typically, less than 15% of the embryos produced from vitrified oocytes reached more than eight cells. Interestingly, the rate of abnormal first cleavage events was not affected by oocyte vitrification. In conclusion, time to first cleavage, the presence of a lag-phase, and the absence of aberrant zygotic cleavage were the best predictors of bovine blastocyst development for both fresh and vitrified oocytes.
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Affiliation(s)
- Daniel Angel-Velez
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium.
- Research Group in Animal Sciences - INCA-CES, Universidad CES, Medellin, Colombia.
| | - Tine De Coster
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Nima Azari-Dolatabad
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Andrea Fernández-Montoro
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Camilla Benedetti
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Krishna Pavani
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
- Department for Reproductive Medicine, Ghent University Hospital, Corneel Heymanslaan 10, 9000, Gent, Belgium
| | - Ann Van Soom
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Osvaldo Bogado Pascottini
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
| | - Katrien Smits
- Department of Internal Medicine, Reproduction, and Population Medicine, Ghent University, Merelbeke, Belgium
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14
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Abstract
Organ development and homeostasis involve dynamic interactions between individual cells that collectively regulate tissue architecture and function. To ensure the highest tissue fidelity, equally fit cell populations are continuously renewed by stochastic replacement events, while cells perceived as less fit are actively removed by their fitter counterparts. This renewal is mediated by surveillance mechanisms that are collectively known as cell competition. Recent studies have revealed that cell competition has roles in most, if not all, developing and adult tissues. They have also established that cell competition functions both as a tumour-suppressive mechanism and as a tumour-promoting mechanism, thereby critically influencing cancer initiation and development. This Review discusses the latest insights into the mechanisms of cell competition and its different roles during embryonic development, homeostasis and cancer.
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15
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Ye Y, Homer HA. Two‐step nuclear centring by competing microtubule‐ and actin‐based mechanisms in 2‐cell mouse embryos. EMBO Rep 2022; 23:e55251. [DOI: 10.15252/embr.202255251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 09/01/2022] [Accepted: 09/12/2022] [Indexed: 11/07/2022] Open
Affiliation(s)
- Yunan Ye
- The Christopher Chen Oocyte Biology Research Laboratory, Centre for Clinical Research The University of Queensland Herston QLD Australia
| | - Hayden A Homer
- The Christopher Chen Oocyte Biology Research Laboratory, Centre for Clinical Research The University of Queensland Herston QLD Australia
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16
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Yaacobi-Artzi S, Kalo D, Roth Z. Seasonal variation in the morphokinetics of in-vitro-derived bovine embryos is associated with the blastocyst developmental competence and gene expression. Front Reprod Health 2022; 4:1030949. [PMID: 36406891 PMCID: PMC9670144 DOI: 10.3389/frph.2022.1030949] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 10/05/2022] [Indexed: 11/06/2022] Open
Abstract
Summer heat stress is a major cause of reduced development of preimplantation embryos. Nevertheless, seasonal effects on embryo morphokinetics have been less studied. We used a non-invasive time-lapse system that allows continuous monitoring of embryos to study the seasonal impact on embryo morphokinetics. The experiments were performed during the cold and the hot seasons. Cumulus-oocyte complexes were aspirated from ovaries, in-vitro-matured, and fertilized. Putative zygotes were cultured in an incubator equipped with a time-lapse system. The cleavage and blastocyst formation rates were lower in the hot vs. the cold season (p < 0.01). The kinetics of the embryos differed between seasons, reflected by a delay in the second cleavage in the hot vs. the cold season (p < 0.03). The distribution of the embryos into different morphological grades (good, fair, and poor) throughout the first three cleavages differed between seasons, with a higher proportion of good-grade embryos in the hot season (p < 0.03). Cleaved embryos were categorized as either normal or abnormal, based on their first cleavage pattern. Normal cleavage was defined as when the first cleavage resulted in two equal blastomeres and further classified as either synchronous or asynchronous, according to their subsequent cleavages. Abnormal cleavage was defined as when the embryo directly cleaved into more than two blastomeres, it cleaved unequally into two unevenly sized blastomeres, or when the fusion of already divided blastomeres occurred. The proportion of abnormally cleaved embryos was higher in the hot season vs. the cold one (p < 0.01), reflected by a higher proportion of unequally cleaved embryos (p < 0.02). In the cold season, abnormally cleaved embryos had a lower potential to develop into blastocysts relative to their normally cleaved counterparts (p < 0.001). Blastocysts that developed in the cold and the hot seasons differed in the expression of genes that related to the cell cycle (STAT1; p < 0.01), stress (HSF1; p < 0.03), and embryo development (ZP3; p < 0.05). A higher expression level was recorded for the STAT1 and UHRF1 genes in blastocysts that developed from unequally vs. the synchronously cleaved embryos (p < 0.04). We provide the first evidence for a seasonal effect on embryo morphokinetics, which might explain the reduced embryo development during the hot season.
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17
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Xu M, Wu W, Zhao M, Chung JPW, Li TC, Chan DYL. Common dysmorphic oocytes and embryos in assisted reproductive technology laboratory in association with gene alternations. Int J Biochem Cell Biol 2022; 152:106298. [PMID: 36122887 DOI: 10.1016/j.biocel.2022.106298] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 09/13/2022] [Accepted: 09/14/2022] [Indexed: 11/29/2022]
Abstract
Amorphic or defected oocytes and embryos are commonly observed in assisted reproductive technology (ART) laboratories. It is believed that a proper gene expression at each stage of embryo development contributes to the possibility of a decent-quality embryo leading to successful implantation. Many studies reported that several defects in embryo morphology are associated with gene expressions during in vitro fertilization (IVF) treatment. There is lacking literature review on summarizing common morphological defects about gene alternations. In this review, we summarized the current literature. We selected 64 genes that have been reported to be involved in embryo morphological abnormalities in animals and humans, 30 of which were identified in humans and might be the causes of embryonic changes. Five papers focusing on associations of multiple gene expressions and embryo abnormalities using RNA transcriptomes were also included during the search. We have also reviewed our time-lapse image database with over 3000 oocytes/embryos to show morphological defects possibly related to gene alternations reported previously in the literature. This holistic review can better understand the associations between gene alternations and morphological changes. It is also beneficial to select important biomarkers with strong evidence in IVF practice and reveal their potential application in embryo selection. Also, identifying genes may help patients with genetic disorders avoid unnecessary treatments by providing preimplantation genetic testing for monogenic/single gene defects (PGT-M), reduce embryo replacements by less potential, and help scientists develop new methods for oocyte/embryo research in the near future.
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Affiliation(s)
- Murong Xu
- Assisted Reproductive Technology Unit, Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China; School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Waner Wu
- Assisted Reproductive Technology Unit, Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Mingpeng Zhao
- Assisted Reproductive Technology Unit, Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China; Department of Reproductive Medicine, Department of Obstetrics and Gynaecology, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jacqueline Pui Wah Chung
- Assisted Reproductive Technology Unit, Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - Tin Chiu Li
- Assisted Reproductive Technology Unit, Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China
| | - David Yiu Leung Chan
- Assisted Reproductive Technology Unit, Department of Obstetrics and Gynaecology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, China.
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18
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Yaacobi-Artzi S, Kalo D, Roth Z. Association between the morphokinetics of in-vitro-derived bovine embryos and the transcriptomic profile of the derived blastocysts. PLoS One 2022; 17:e0276642. [PMID: 36288350 PMCID: PMC9604948 DOI: 10.1371/journal.pone.0276642] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 10/10/2022] [Indexed: 11/18/2022] Open
Abstract
The time-lapse system is a non-invasive method that enables a continuous evaluation through embryo development. Here, we examined the association between the morphokinetics of the developing embryo and the transcriptomic profile of the formed blastocysts. Bovine oocytes were matured and fertilized in vitro; then, the putative zygotes were cultured in an incubator equipped with a time-lapse system. Based on the first-cleavage pattern, embryos were categorized as normal or abnormal (68.5±2.2 and 31.6±2.3%, respectively; P<0.001). A cleaved embryo was defined as normal when it first cleaved into two equal blastomeres; it was classified as synchronous or asynchronous according to its subsequent cleavages. An abnormal pattern was defined as direct, unequal, or reverse cleavage. Direct cleavage was classified as division from one cell directly into three or more blastomeres; unequal cleavage was classified as division that resulted in asymmetrically sized blastomeres; and reverse cleavage of the first division was classified as reduced number of blastomeres from two to one. Of the normally cleaving embryos, 60.2±3.1% underwent synchronous cleavage into 4, 8, and 16 blastomeres, and 39.7±3.1% cleaved asynchronously (P<0.001). The blastocyte formation rate was lower for the synchronously vs. the asynchronously cleaved embryos (P<0.03). The abnormally cleaved embryos showed low competence to develop to blastocysts, relative to the normally cleaved embryos (P<0.001). Microarray analysis revealed 895 and 643 differentially expressed genes in blastocysts that developed from synchronously and asynchronously cleaved embryos, respectively, relative to those that developed from directly cleaved embryos. The genes were related to the cell cycle, cell differentiation, metabolism, and apoptosis. About 180 differentially expressed genes were found between the synchronously vs. the asynchronously cleaved embryos, related to metabolism and the apoptosis mechanism. We provide the first evidence indicating that an embryo's morphokinetics is associated with the transcriptome profile of the derived blastocyst, which might be practically relevant for the embryo transfer program.
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Affiliation(s)
- Shira Yaacobi-Artzi
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot, Israel
| | - Dorit Kalo
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot, Israel
| | - Zvi Roth
- Department of Animal Sciences, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University, Rehovot, Israel,* E-mail:
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19
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Sayed S, Reigstad MM, Petersen BM, Schwennicke A, Hausken JW, Storeng R. Nucleation status of Day 2 pre-implantation embryos, acquired by time-lapse imaging during IVF, is associated with live birth. PLoS One 2022; 17:e0274502. [PMID: 36137104 PMCID: PMC9498959 DOI: 10.1371/journal.pone.0274502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 08/26/2022] [Indexed: 11/19/2022] Open
Abstract
The primary purpose of this time-lapse data analysis was to identify the association between the nucleation status of a Day 2 preimplantation embryo and live births following in vitro fertilization (IVF). The retrospective data analysis was based on 2769 transferred embryos from 1966 treatment cycles and utilised only Known Implantation Data (KID) for live births. Nucleation errors (NE) such as micronucleation, binucleation, multinucleation and minor error groups, were annotated in the time-lapse images which were taken every 15 minutes for a minimum of 44 hours post insemination. Further, factors that may impact NE and the relationship of early morphological attributes and morphokinetic variables with NE occurrence were explored. The frequency of NE among the transferred embryos was 23.8%. The reversibility of NE evidenced by their presence at the two-cell stage, but absence at the four-cell stage was 89.6%. Embryos exhibiting nucleation errors at the two-cell stage had significantly lower live birth rates compared to embryos with no nucleation errors, constituting a significant predictor. A Generalized Additive Mixed Model was used to control for confounders and for controlling clustering effects from dual embryo transfers. Increased incidences of NE were observed with increasing age, with delayed occurrence of cell divisions and in oocytes inseminated with surgically retrieved spermatozoa. NE assessment and their impact on live birth provides valuable markers for early preimplantation embryo selection. In addition, the high incidence of reversibility of NE and their possible impact on live birth suggest that incorporating two-cell nuclear status annotations in embryo selection, alongside morphology and morphokinetics, is of value.
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20
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Li M, Xue X, Shi J, Todorov P. Ultralow Oxygen Tension (2%) Is Beneficial for Blastocyst Formation of In Vitro Human Low-Quality Embryo Culture. BioMed Research International 2022; 2022:1-7. [PMID: 35692587 PMCID: PMC9177330 DOI: 10.1155/2022/9603185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 05/19/2022] [Indexed: 11/17/2022]
Abstract
Objectives To investigate whether a reduction in the O2 tension from 5 to 2% during extended culture from day 3 onwards was beneficial to human blastocyst development in vitro. Methods We firstly identified 139 patients who had no low-quality embryos on day 3, and all the embryos were prolonged to culture on day 5 or 6. We mainly analyzed 188 patients receiving IVF/ICSI-ET for the first time, and no high-quality embryos were obtained on day 3 from January 2018 to December 2019. After transferred with one or two low-quality embryos, extended culture was performed under low O2 (5%) or ultralow O2 (2%) tension for surplus embryos. 296 embryos from 106 patients were continued to culture under 5% O2 tension, and 214 embryos from 82 patients were continued to culture under 2% O2 tension. Main outcomes compared were blastulation and high-quality blastulation rates. Results We observed no significant differences in the blastulation and high-quality blastulation rates for high-quality cleavage-stage embryos between 2% and 5% O2 groups (p > 0.05). For low-quality cleavage-stage embryos, we observed that the 2% O2 group showed a significantly higher blastulation (39.72 versus 31.08%; p = 0.043) rate than that in the 5% O2 group. The high-quality blastocyst formation rate (10.75 versus 8.45%; p = 0.380) was comparable between the 2% and 5% O2 groups. The blastulation rate reached 44.86% by culturing blastocysts an additional day under 2% O2 tension which was significantly higher than that (32.09%) under 5% O2 tension (p < 0.05). Conclusion A reduction in O2 tension from 5 to 2% after day 3 might be beneficial to the patients with no high-quality embryos. Extended culture to day 7 under 2% O2 tension increased the number of available blastocysts per IVF/ICSI cycle and was worth recommending especially for patients with few blastocysts.
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21
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Olcay IO, Akcay B, Bahceci M, Arici A, Boynukalin K, Yakicier C, Ozpinar A, Basar M. Noninvasive amino acid turnover predicts human embryo aneuploidy. Gynecol Endocrinol 2022; 38:461-466. [PMID: 35481385 DOI: 10.1080/09513590.2022.2068520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
Assisted reproduction technology has two significant problems: low success rates and multiple pregnancies. Because of these problems, the priority in IVF clinics is to develop a potential diagnostic test that can be used to select the embryos with the ultimate developmental competence. Aneuploidy screening as embryo selection criteria will ensure that the transferred embryos are euploid and high implantation rate. We hypothesize that aneuploidy in human preimplantation embryos could be discriminated by their amino acid metabolism profile in the spent culture media. Preimplantation genetic testing for aneuploidy results and spent embryo culture medium amino acid content were analyzed for 58 couples. The next-generation sequencing technique was used and coupled with TE biopsy. Forty euploid and 71 aneuploid blastocysts were evaluated. Embryos were cultured individually until day 5 or 6 of embryo development. Spent culture medium was collected after finishing the culture. There was no statistical difference between D3 and D5 embryo morphology between euploid and aneuploid embryos (p > .05). Eight amino acids, including SER, GLY, HIS, ARG, THR, ALA, PRO, and TYR, were detected in the culture medium from the blank control group, euploid group, and aneuploid group. Only TYR amino acid concentration was found significantly higher in the aneuploid group compared to the euploid group (p < .003). Tyrosine amino acid levels equal to and above 76.38 µmol/L could be considered aneuploid. Aneuploid embryos demonstrate altered amino acid turnover in vitro relative to euploid counterparts. A noninvasive method of amino acid profiling will be of value as a tool for routine preimplantation embryo selection among all patient groups.
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Affiliation(s)
- I Orcun Olcay
- Bahceci Umut Assisted Reproduction Center, IVF Laboratory, Istanbul, Turkey
- Acibadem Mehmet Ali Aydinlar University, School of Medicine, Dept. Medical Biochemistry, Istanbul, Turkey
| | - Berkay Akcay
- Bahceci Umut Assisted Reproduction Center, IVF Laboratory, Istanbul, Turkey
| | | | - Aydin Arici
- Department of Obstetrics & Gynecology, Yale University School of Medicine, New Haven, CT, USA
| | | | - Cengiz Yakicier
- Acibadem Mehmet Ali Aydinlar University, School of Medicine, Dept. Medical Biochemistry, Istanbul, Turkey
| | - Aysel Ozpinar
- Acibadem Mehmet Ali Aydinlar University, School of Medicine, Dept. Medical Biochemistry, Istanbul, Turkey
| | - Murat Basar
- Bahceci Umut Assisted Reproduction Center, IVF Laboratory, Istanbul, Turkey
- Medical Faculty, Department of Histology & Embryology, Biruni University, Istanbul, Turkey
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22
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Demirdağ E, Güler İ, Cevher Akdulum MF, Şahin E, Tufan AD, Erdem A, Erdem M. Comparison of natural and artificial cycles in frozenthawed embryo transfer: A retrospective analysis of 1696 cycles. Turk J Obstet Gynecol 2022; 19:28-34. [PMID: 35343217 PMCID: PMC8966319 DOI: 10.4274/tjod.galenos.2021.17981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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23
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Li YW, Liang XW, Fang JH, Chen ZY. Application of ultrasound markers measured at different time points of COH cycle in the prediction of ovarian response for individualised ovulation induction. J OBSTET GYNAECOL 2021; 42:1467-1473. [PMID: 34927543 DOI: 10.1080/01443615.2021.2004101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
The purpose of this study was to evaluate the predictive value of ultrasound markers measured at different time points of the controlled ovarian hyperstimulation (COH) cycle on ovarian response and outcome indicators in the IVF-ET cycle. According to the oestrogen level and the number of retrieved oocytes, patients who planned for COH treatment were separated into low-response group, normal and high-response group. The ovarian stromal artery flow parameters on the day of pituitary down-regulation, day 1, day 7, day 10, and the day of hCG injection were collected prospectively. We also have collected the data of cumulus oophorus count on the day of hCG injection by transvaginal sonography. Compared with the low-response group, on the first day of the COH cycle PI, RI, and S/D were lower in the high-response group than they were in the low-response group (p < .05). PSV and EDV were significantly higher in the high-response group than they were in the low-response group (p < .01), and the PSV on the first day of the COH cycle have statistical significance in predicting the number of high-quality embryos. The number of cumulus oophorus on the day of hCG injection has statistical significance in predicting the number of oocytes retrieved and fertilised oocytes. We conclude that the ovarian stromal artery flow parameters on the first day of the COH cycle and cumulus oophorus count on hCG injection day can serve as efficient indicators for an early assessment of ovarian response and individualised ovulation induction.IMPACT STATEMENTWhat is already known on this subject? AMH, AFC, and the age of the patient are well-known effective parameters for the evaluation of ovarian response, but these are insufficient and full of individual differences. Some researchers have investigated the value of colour Doppler ultrasound and cumulus oophorus in assessing ovarian response, but no definitive conclusion has been reached.What do the results of this study add? The hemodynamic parameters of ovarian stromal artery on the first day of the COH cycle and the number of cumulus oophorus on the day of hCG injection detected by Transvaginal Colour Doppler Sonography (TV-CDS) could be used to predict the ovarian response.What are the implications of these findings for clinical practice and/or further research? Ovarian stromal artery flow parameters and cumulus oophorus detected by TV-CDS can potentially be offered as a complementary parameter for ovarian reserve.
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Affiliation(s)
- Yue-Wei Li
- Department of Ultrasound Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Xiao-Wen Liang
- Department of Ultrasound Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jing-Hui Fang
- Department of Ultrasound Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Zhi-Yi Chen
- Department of Ultrasound Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.,Medical Imaging Centre, First Affiliated hospital of University of South China, Hengyang, Hunan, China.,Institute of Medical Imaging, University of South China, Hengyang, Hunan, China
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Huang Y, Li Z, Lin E, He P, Ru G. Oxidative damage-induced hyperactive ribosome biogenesis participates in tumorigenesis of offspring by cross-interacting with the Wnt and TGF-β1 pathways in IVF embryos. Exp Mol Med 2021; 53:1792-1806. [PMID: 34848840 PMCID: PMC8640061 DOI: 10.1038/s12276-021-00700-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 07/12/2021] [Accepted: 08/02/2021] [Indexed: 02/05/2023] Open
Abstract
In vitro fertilization (IVF) increases the risk of tumorigenesis in offspring. The increased oxidative damage during IVF may be involved in tumor formation. However, the molecular mechanisms underlying this phenomenon remain largely unclear. Using a well-established model of oxidatively damaged IVF mouse embryos, we applied the iTRAQ method to identify proteins differentially expressed between control and oxidatively damaged zygotes and explored the possible tumorigenic mechanisms, especially with regard to the effects of oxidative damage on ribosome biogenesis closely related to tumorigenesis. The iTRAQ results revealed that ribosomal proteins were upregulated by oxidative stress through the Nucleolin/β-Catenin/n-Myc pathway, which stimulated ribosomes to synthesize an abundance of repair proteins to correct the damaged DNA/chromosomes in IVF-derived embryos. However, the increased percentages of γH2AX-positive cells and apoptotic cells in the blastocyst suggested that DNA repair was insufficient, resulting in aberrant ribosome biogenesis. Overexpression of ribosomal proteins, particularly Rpl15, which gradually increased from the 1-cell to 8-cell stages, indicated persistent hyperactivation of ribosome biogenesis, which promoted tumorigenesis in offspring derived from oxidatively damaged IVF embryos by selectively enhancing the translation of β-Catenin and TGF-β1. The antioxidant epigallocatechin-3-gallate (EGCG) was added to the in vitro culture medium to protect embryos from oxidative damage, and the expression of ribosome-/tumor-related proteins returned to normal after EGCG treatment. This study suggests that regulation of ribosome biogenesis by EGCG may be a means of preventing tumor formation in human IVF-derived offspring, providing a scientific basis for optimizing in vitro culture conditions and improving human-assisted reproductive technology.
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Affiliation(s)
- Yue Huang
- Department of Reproductive Center, The First Affiliated Hospital of Shantou University Medical College, Shantou University, 515000, Shantou, Guangdong, China
| | - Zhiling Li
- Department of Reproductive Center, The First Affiliated Hospital of Shantou University Medical College, Shantou University, 515000, Shantou, Guangdong, China.
| | - En Lin
- Department of Reproductive Center, The First Affiliated Hospital of Shantou University Medical College, Shantou University, 515000, Shantou, Guangdong, China
- Institute of Molecular Physiology, Shenzhen Bay Laboratory, 518000, Shenzhen, Guangdong, China
| | - Pei He
- Department of Reproductive Center, The First Affiliated Hospital of Shantou University Medical College, Shantou University, 515000, Shantou, Guangdong, China
| | - Gaizhen Ru
- Department of Reproductive Center, The First Affiliated Hospital of Shantou University Medical College, Shantou University, 515000, Shantou, Guangdong, China
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Men NT, Dang-Nguyen TQ, Somfai T, Nguyen HT, Noguchi J, Kaneko H, Kikuchi K. Effect of nucleocytoplasmic ratio on the in vitro porcine embryo development after in vitro fertilization or parthenogenetic activation. ZYGOTE 2021;:1-7. [PMID: 34612188 DOI: 10.1017/S0967199421000381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
This study was conducted to examine whether the nuclear to cytoplasmic (N/C) ratio had any influence on the timing of embryo compaction and blastocoel formation, as well as formation rate and quality of blastocyst. First, we produced embryos with increased N/C ratio by removal of approximately one-third of the cytoplasm and with decreased N/C ratio by doubling the oocyte cytoplasm with an enucleated oocyte. The initiation of compaction and cavitation in reduced cytoplasm group was significantly earlier (P < 0.05) compared with the control and doubled cytoplasm groups. The rate of blastocysts in the reduced cytoplasm and doubled cytoplasm groups was significantly lower (P < 0.05) compared with the control group. Blastocyst quality in terms of total cell number in the reduced cytoplasm group was significantly lower (P < 0.05) compared with the doubled cytoplasm group, but not different from the control group. Next, we produced embryos with various N/C ratios by oocyte fusion combined with cytochalasin D treatment. The onset of compaction and cavitation in the 2N/2C group (decreased N/C ratio) was significantly delayed (P < 0.05) or had the tendency to be delayed (P = 0.064), respectively, compared with the control group (2N/1C). A significantly higher rate of blastocyst was observed in the 4N/2C group compared with the 1N/1C group (P < 0.05) but not different from the remaining groups. These results demonstrated that an increase in N/C ratio caused an earlier occurrence of morula compaction and blastocyst formation in both in vitro fertilization (IVF) and parthenogenetically activated pig embryos.
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Demirdag E, Guler I, Cevher Akdulum MF, Sahin E, Erdem O, Erdem A, Erdem M. Subsequent IVF outcomes following antibiotic therapy for chronic endometritis in patients with recurrent implantation failure. J Obstet Gynaecol Res 2021; 47:4350-4356. [PMID: 34549486 DOI: 10.1111/jog.15037] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 05/01/2021] [Accepted: 09/12/2021] [Indexed: 11/27/2022]
Abstract
AIM The aim is to identify the chronic endometritis (CE) incidence in recurrent implantation failure (RIF) patients undergoing in vitro fertilization (IVF) treatment and compare the IVF outcomes of RIF patients with CE following antibiotic therapy with RIF patients without CE. Another purpose is to compare the IVF outcomes of described RIF patients with patients undergoing the first cycle of IVF. METHODS In this retrospective cohort study, CE was diagnosed with CD-138 immunohistochemical staining. Among RIF patients, two groups were formed as group 1, including patients diagnosed with CE and treated by antibiotics (n = 129), and group 2, including patients without CE (n = 103). Patients with the first IVF cycle having similar infertility etiologies with RIF patients were reviewed as group 3 (n = 932). RESULTS CE was diagnosed in 55.6% of RIF patients. The number of oocytes retrieved was not different between groups. Implantation rates (IR) were similar after antibiotic treatment in RIF patients with or without CE. However, Group 3 had a higher IR (41.1%) than group 1 and 2 (23.1% and 30.1%, respectively) (p < 0.001). Clinical pregnancy (CPR) and live birth rates (LBR) were comparable between RIF groups. However, CPR and LBR were significantly higher in group 3 (48.6% and 40.5%) than group 1 (36.4% and 27.9%), and group 2 (37.9% and 30.1%) (p = 0.007 and p = 0.005, respectively). CONCLUSION Unidentified endometrial factors except CE may also affect the implantation process, although CE is a frequent finding in patients with RIF. Reproductive outcomes may not be improved only with antibiotics in RIF patients with CE.
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Affiliation(s)
- Erhan Demirdag
- Department of Obstetrics and Gynecology, Gazi University Faculty of Medicine, Emniyet Mahallesi, Gazeteci Yazar Muammer Yaşar Bostancı Sokak, Yenimahalle/Ankara, Turkey
| | - Ismail Guler
- Department of Obstetrics and Gynecology, Gazi University Faculty of Medicine, Emniyet Mahallesi, Gazeteci Yazar Muammer Yaşar Bostancı Sokak, Yenimahalle/Ankara, Turkey
| | - Munire Funda Cevher Akdulum
- Department of Obstetrics and Gynecology, Gazi University Faculty of Medicine, Emniyet Mahallesi, Gazeteci Yazar Muammer Yaşar Bostancı Sokak, Yenimahalle/Ankara, Turkey
| | - Esin Sahin
- Department of Obstetrics and Gynecology, Gazi University Faculty of Medicine, Emniyet Mahallesi, Gazeteci Yazar Muammer Yaşar Bostancı Sokak, Yenimahalle/Ankara, Turkey
| | - Ozlem Erdem
- Department of Medical Pathology, Gazi University Faculty of Medicine, Emniyet Mahallesi, Gazeteci Yazar Muammer Yaşar Bostancı Sokak, Yenimahalle/Ankara, Turkey
| | - Ahmet Erdem
- Department of Obstetrics and Gynecology, Gazi University Faculty of Medicine, Emniyet Mahallesi, Gazeteci Yazar Muammer Yaşar Bostancı Sokak, Yenimahalle/Ankara, Turkey
| | - Mehmet Erdem
- Department of Obstetrics and Gynecology, Gazi University Faculty of Medicine, Emniyet Mahallesi, Gazeteci Yazar Muammer Yaşar Bostancı Sokak, Yenimahalle/Ankara, Turkey
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Sipahi M, Mümüşoğlu S, Coşkun Akçay N, Sever A, Yeğenoğlu H, Bozdağ G, Karakoç Sökmensüer L. The impact of using culture media containing granulocyte-macrophage colony-stimulating factor on live birth rates in patients with a history of embryonic developmental arrest in previous in vitro fertilization cycles. J Turk Ger Gynecol Assoc 2021; 22:181-186. [PMID: 33631877 PMCID: PMC8420754 DOI: 10.4274/jtgga.galenos.2021.2020.0168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
Objective: To investigate the effect of using culture media containing granulocyte-macrophage colony-stimulating factor (GM-CSF) on embryological data and reproductive outcomes in patients with early embryonic developmental arrest. Material and Methods: Retrospective case-control study. A total of 39 patients, whose embryos were incubated with culture media containing GM-CSF due to embryonic developmental arrest in two previous in vitro fertilization (IVF) cycles in-between January 2016 and November 2017 at Hacettepe University IVF Center, were enrolled. Control group was generated among patients with first IVF attempts due to tubal factor in the same time period. All embryos in the control group were incubated with single step culture medium (without GM-CSF). For the control group selection, matching was done 1:2 ratio considering female age, body mass index, number of M-II oocyte retrieved, and number of embryo transferred (n=80). Results: Demographic features and embryological data were comparable between two groups. Number of fertilized oocytes (2-pronuclear) was 3.7±2.0 in GM-CSF group and 3.9±2.5 in the control (p=0.576). Overall, number of embryos transferred (1.3±0.5 vs 1.3±0.5, respectively) and blastocyst transfer rate (67.6% vs 59.2%, respectively; p=0.401) were similar. For the reproductive outcomes, implantation rate (32.3% vs 33.1%, respectively; p=0.937), clinical pregnancy rate (33.3% vs 32.5%, respectively; p=0.770), and live birth rate (25.2% vs 26.2%, respectively; p=0.943) were similar. Conclusion: Using GM-CSF-containing culture media in patients with two previous failed IVF attempts due to embryonic developmental arrest might rectify embryological data and reproductive outcomes. To make solid conclusion further randomized controlled trials are warranted.
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Affiliation(s)
- Mehmet Sipahi
- Department of Obstetrics and Gynecology, Giresun University Faculty of Medicine, Giresun, Turkey
| | - Sezcan Mümüşoğlu
- Department of Obstetrics and Gynecology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Neslihan Coşkun Akçay
- Department of Obstetrics and Gynecology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Ayten Sever
- Department of Obstetrics and Gynecology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Hande Yeğenoğlu
- Department of Obstetrics and Gynecology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Gürkan Bozdağ
- Department of Obstetrics and Gynecology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Lale Karakoç Sökmensüer
- Department of Histology and Embryology, Hacettepe University Faculty of Medicine, Ankara, Turkey
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Xu W, Zhang L, Zhang L, Jin Z, Wu L, Li S, Shu J. Laser-assisted hatching in lower grade cleavage stage embryos improves blastocyst formation: results from a retrospective study. J Ovarian Res 2021; 14:94. [PMID: 34261510 PMCID: PMC8281458 DOI: 10.1186/s13048-021-00844-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 07/02/2021] [Indexed: 11/17/2022] Open
Abstract
Background Laser-assisted hatching (LAH) has been widely applied to facilitate blastocyst hatching in IVF-ET treatment, however, the effect of LAH on subsequent development and clinical outcomes of the lower grade cleavage stage embryos (LGCE) remains unknown. Our study aimed at evaluating the effect of LAH on blastocyst formation and the clinical pregnancy outcomes of LGCE embryos after transfer. Methods A total of 608 cycles of IVF/ICSI treatment from November 2017 to September 2019 were included in our study as follows: 296 in the LAH group and 312 in the N-LAH group. The total blastocyst rate, usable blastocyst rate, good-grade blastocyst rate and clinical pregnancy rate were statistically compared between the two groups. Results The total blastocyst rate (50.7% vs 40.2%, P < 0.001), usable blastocyst rate (31.0% vs 18.6%, P < 0.001) were significantly higher in the LAH group than those in the N-LAH group. After analysis of generalized estimating equations, LAH was positively correlated with the blastocyst rate (B = 0.201, OR 95% CI = 1.074–1.393, P = 0.002), usable blastocyst rate (B = 0.478, OR 95% CI = 1.331–1.955, P < 0.001). However, the clinical pregnancy rate after blastocyst transfer did not differ between LAH group and N-LAH group (49.4% vs 40.0%, P > 0.05, respectively). Conclusions A higher proportion of total blastocysts and usable blastocysts can be obtained by LAH in LGCE, which may be beneficial to the outcome of the IVF/ICSI-ET cycle.
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Affiliation(s)
- Weihai Xu
- Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital, Hangzhou Medical College, 310000, Hangzhou, P.R. China
| | - Ling Zhang
- Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital, Hangzhou Medical College, 310000, Hangzhou, P.R. China
| | - Lin Zhang
- Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital, Hangzhou Medical College, 310000, Hangzhou, P.R. China
| | - Zhen Jin
- Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital, Hangzhou Medical College, 310000, Hangzhou, P.R. China
| | - Limei Wu
- Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital, Hangzhou Medical College, 310000, Hangzhou, P.R. China
| | - Shishi Li
- Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital, Hangzhou Medical College, 310000, Hangzhou, P.R. China.
| | - Jing Shu
- Department of Reproductive Endocrinology, Zhejiang Provincial People's Hospital, Hangzhou Medical College, 310000, Hangzhou, P.R. China.
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Firmin J, Maître JL. Morphogenesis of the human preimplantation embryo: bringing mechanics to the clinics. Semin Cell Dev Biol 2021; 120:22-31. [PMID: 34253437 DOI: 10.1016/j.semcdb.2021.07.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 06/15/2021] [Accepted: 07/01/2021] [Indexed: 12/19/2022]
Abstract
During preimplantation development, the human embryo forms the blastocyst, the structure enabling uterine implantation. The blastocyst consists of an epithelial envelope, the trophectoderm, encompassing a fluid-filled lumen, the blastocoel, and a cluster of pluripotent stem cells, the inner cell mass. This specific architecture is crucial for the implantation and further development of the human embryo. Furthermore, the morphology of the human embryo is a prime determinant for clinicians to assess the implantation potential of in vitro fertilized human embryos, which constitutes a key aspect of assisted reproduction technology. Therefore, it is crucial to understand how the human embryo builds the blastocyst. As any material, the human embryo changes shape under the action of forces. Here, we review recent advances in our understanding of the mechanical forces shaping the blastocyst. We discuss the cellular processes responsible for generating morphogenetic forces that were studied mostly in the mouse and review the literature on human embryos to see which of them may be conserved. Based on the specific morphological defects commonly observed in clinics during human preimplantation development, we discuss how mechanical forces and their underlying cellular processes may be affected. Together, we propose that bringing tissue mechanics to the clinics will advance our understanding of human preimplantation development, as well as our ability to help infertile couples to have babies.
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Affiliation(s)
- Julie Firmin
- Institut Curie, PSL Research University, Sorbonne Université, CNRS UMR3215, INSERM, U934 Paris, France
| | - Jean-Léon Maître
- Institut Curie, PSL Research University, Sorbonne Université, CNRS UMR3215, INSERM, U934 Paris, France.
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Song J, Duan C, Cai W, Xu J. Predictive value of the number of frozen blastocysts in live birth rates of the transferred fresh embryos. J Ovarian Res 2021; 14:83. [PMID: 34174916 PMCID: PMC8236141 DOI: 10.1186/s13048-021-00838-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 06/15/2021] [Indexed: 11/19/2022] Open
Abstract
Background Blastocyst development by extended culture in vitro allows the embryos to ‘select’ themselves, thus successful growth to the blastocyst stage is a reflection of the developmental competence of cleavage stage embryos in a cohort. The study aims to determine whether the number of frozen blastocysts is associated with live birth rates of the transferred fresh embryos. Method The retrospective study included 8676 cycles of first fresh embryo transfer from January 2016 to June 2019 at a fertility center of a university hospital. The patients with ≥ 10 oocytes retrieved were divided into three groups according to the number of frozen blastocysts: 0 (group 1), 1–2 (group 2), and ≥ 3 (group 3). The primary outcome measure was the live birth. The secondary outcome measures included clinical pregnancy rates and implantation rates. Logistic regression analysis was also performed. Results Live birth rates in patients with ≥ 3 and 1–2 frozen blastocysts were 47.6% and 46.1%, respectively, which were significantly higher than that in patients without blastocyst (36.0%). The clinical pregnancy rate in group 3 was 65.1%, which was also significantly higher than the other two groups (47.0% and 59.2%). The implantation rates were 35.5%, 47.6%, and 56.0% in the three groups, respectively (P < 0.001). Compared with groups of frozen blastocysts, 0 frozen blastocyst yielded a lower rate of live birth (the adjusted odds ratio: 0.526, 95% CI: 0.469, 0.612). Conclusion In patients with optimal ovarian response that retrieved ≥ 10 oocytes, fresh embryos transfer followed by having blastocysts frozen is a strong indicator of pregnancy achievement, but the number of frozen blastocysts (if not = 0) has limited value in predicting live birth rates.
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Affiliation(s)
- Jianyuan Song
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, No.1 Shang Cheng Avenue, Yiwu, 322000, Zhejiang, China
| | - Cuicui Duan
- Women's Hospital School Of Medicine, Zhejiang University, No.1 Xue Shi Road, Hangzhou, 310006, Zhejiang, China
| | - Wangyu Cai
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, No.1 Shang Cheng Avenue, Yiwu, 322000, Zhejiang, China
| | - Jian Xu
- The Fourth Affiliated Hospital, Zhejiang University School of Medicine, No.1 Shang Cheng Avenue, Yiwu, 322000, Zhejiang, China.
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Salilew-Wondim D, Tesfaye D, Rings F, Held-Hoelker E, Miskel D, Sirard MA, Tholen E, Schellander K, Hoelker M. The global gene expression outline of the bovine blastocyst: reflector of environmental conditions and predictor of developmental capacity. BMC Genomics 2021; 22:408. [PMID: 34082721 PMCID: PMC8176733 DOI: 10.1186/s12864-021-07693-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 04/14/2021] [Indexed: 12/22/2022] Open
Abstract
Background Morphological evaluation of embryos has been used to screen embryos for transfer. However, the repeatability and accuracy of this method remains low. Thus, evaluation of an embryo’s gene expression signature with respect to its developmental capacity could provide new opportunities for embryo selection. Since the gene expression outline of an embryo is considered as an aggregate of its intrinsic characteristics and culture conditions, we have compared transcriptome profiles of in vivo and in vitro derived blastocysts in relation to pregnancy outcome to unravel the discrete effects of developmental competence and environmental conditions on bovine embryo gene expression outlines. To understand whether the gene expression patterns could be associated with blastocyst developmental competency, the global transcriptome profile of in vivo (CVO) and in vitro (CVT) derived competent blastocysts that resulted in pregnancy was investigated relative to that of in vivo (NVO) and in vitro (NVT) derived blastocysts which did not establish initial pregnancy, respectively while to unravel the effects of culture condition on the transcriptome profile of embryos, the transcriptional activity of the CVO group was compared to the CVT group and the NVO group was compared to the NVT ones. Results A total of 700 differentially expressed genes (DEGs) were identified between CVO and NVO blastocysts. These gene transcripts represent constitutive regions, indel variants, 3′-UTR sequence variants and novel transcript regions. The majority (82%) of these DEGs, including gene clusters like ATP synthases, eukaryotic translation initiation factors, ribosomal proteins, mitochondrial ribosomal proteins, NADH dehydrogenase and cytochrome c oxidase subunits were enriched in the CVO group. These DEGs were involved in pathways associated with glycolysis/glycogenesis, citrate acid cycle, pyruvate metabolism and oxidative phosphorylation. Similarly, a total of 218 genes were differentially expressed between CVT and NVT groups. Of these, 89%, including TPT1, PDIA6, HSP90AA1 and CALM, were downregulated in the CVT group and those DEGs were overrepresented in pathways related to protein processing, endoplasmic reticulum, spliceasome, ubiquitone mediated proteolysis and steroid biosynthesis. On the other hand, although both the CVT and CVO blastocyst groups resulted in pregnancy, a total of 937 genes were differential expressed between the two groups. Compared to CVO embryos, the CVT ones exhibited downregulation of gene clusters including ribosomal proteins, mitochondrial ribosomal protein, eukaryotic translation initiation factors, ATP synthases, NADH dehydrogenase and cytochrome c oxidases. Nonetheless, downregulation of these genes could be associated with pre and postnatal abnormalities observed after transfer of in vitro embryos. Conclusion The present study provides a detailed inventory of differentially expressed gene signatures and pathways specifically reflective of the developmental environment and future developmental capacities of bovine embryos suggesting that transcriptome activity observed in blastocysts could be indicative of further pregnancy success but also adaptation to culture environment. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-07693-0.
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Affiliation(s)
- Dessie Salilew-Wondim
- Institute of Animal Sciences, Animal Breeding, University of Bonn, Endenicher Allee 15, 53115, Bonn, Germany
| | - Dawit Tesfaye
- Animal Reproduction and Biotechnology Laboratory, Department of Biomedical Sciences, Colorado State University, 3105 Rampart Rd, CO, 80521, Fort Collins, USA
| | - Franca Rings
- Institute of Animal Sciences, Animal Breeding, University of Bonn, Endenicher Allee 15, 53115, Bonn, Germany
| | - Eva Held-Hoelker
- Institute of Animal Sciences, Animal Breeding, University of Bonn, Endenicher Allee 15, 53115, Bonn, Germany
| | - Dennis Miskel
- Institute of Animal Sciences, Animal Breeding, University of Bonn, Endenicher Allee 15, 53115, Bonn, Germany
| | - Marc-Andre Sirard
- Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle, Faculté des sciences de l'agriculture et de l'alimentation, INAF, Pavillon des services, Université Laval (Québec), G1V 0A6, Quebec City, Canada
| | - Ernst Tholen
- Institute of Animal Sciences, Animal Breeding, University of Bonn, Endenicher Allee 15, 53115, Bonn, Germany
| | - Karl Schellander
- Institute of Animal Sciences, Animal Breeding, University of Bonn, Endenicher Allee 15, 53115, Bonn, Germany
| | - Michael Hoelker
- Institute of Animal Sciences, Animal Breeding, University of Bonn, Endenicher Allee 15, 53115, Bonn, Germany. .,Department of Animal Science, Biotechnology & Reproduction in farm animals, University of Goettingen, Burckhardtweg 2, 37077, Goettingen, Germany.
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Mashayekhi M, Barabi F, Arabipoor A, Zolfaghari Z. Live birth rates in different subgroups of poor ovarian responders according to Bologna and POSEIDON group classification criteria. J Gynecol Obstet Hum Reprod 2021; 50:102169. [PMID: 34044136 DOI: 10.1016/j.jogoh.2021.102169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 04/18/2021] [Accepted: 05/19/2021] [Indexed: 11/20/2022]
Abstract
PURPOSE The present study was designed to compare the live birth rates (LBRs) according to Bologna criteria or Patient-Oriented Strategies Encompassing IndividualizeD Oocyte Number (POSEIDON) group classifications to determine the important predictive factors for LBR in patients with POR. BASIC PROCEDURES In this cross-sectional study, the database of Royan Institute (Tehran, Iran) from December 2015 to December 2017 was evaluated and the fertilization/intracytoplasmic sperm injection (IVF/ICSI) cycles outcomes for all the patients with at least one POR after standard controlled ovarian stimulation were collected. The patients divided into five subgroups according to Bologna criteria and four groups on the basis of POSEIDON group classification. MAIN FINDING 812 patients with POR diagnosis were assessed which 517 (63.6%) of them were underwent embryo transfer (ET) during the last treatment cycle. According to Bologna criteria, 41 patients were not included in any subgroup and the patients in Bologna group II had highest LBR (19.8%). In terms of POSEIDON classification, all of the patients were classified into subgroups and the women in POSEIDON group III had the highest LBR (27%). According to multivariable regression analysis, the significant independent predictive factors for LBR were the number and morphology (good and excellent) of the embryos transferred, and POSEIDON group III classification. PRINCIPAL CONCLUSION The results indicated that the POSEIDON group classification could be more comprehensive and practical than Bologna criteria for categorizing POR patients and predicting their outcome. Moreover, the number and morphology of transferred embryos were the most important prognostic factors for live births in these patients.
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Zhang Q, Ji H, Shi J, Wang L, Ding L, Jiang Y, Huang X, Qiu P, Li P. Digital PCR Detection of mtDNA/gDNA Ratio in Embryo Culture Medium for Prediction of Embryo Development Potential. Pharmgenomics Pers Med 2021; 14:521-531. [PMID: 33958889 PMCID: PMC8096441 DOI: 10.2147/pgpm.s304747] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 04/06/2021] [Indexed: 12/01/2022] Open
Abstract
PURPOSE The ratio of mitochondrial DNA to genomic DNA (mtDNA/gDNA) in embryo culture medium as a predictor of embryonic development is a new method of noninvasive embryo screening. However, current tests based on this concept have proven inconsistent. The aim of this study was to define the predictive value of the ratio of mtDNA/gDNA for embryonic developmental potential. MATERIALS AND METHODS We used digital PCR to measure mtDNA/gDNA ratios in day 3 culture media of 223 embryos from 56 patients. We compared the relationship between the predictive value of mtDNA/gDNA ratio and each of embryo fragmentation, embryo morphological grade, and blastocyst formation. RESULTS mtDNA/gDNA ratio decreased significantly with a decrease in embryo rating: 22.54 (44.66); 31.25 (36.97) and 46.33 (57.11); Grades A vs C, P = 0.006; B vs C, P = 0.015. mtDNA/gDNA ratio increased overall with an increase in embryo fragment content but did not differ significantly between high-, -medium, and poor-quality embryos. Interestingly, this trend differed from that of the unformed blastocysts. mtDNA/gDNA ratio of cleavage stage embryos forming blastocysts was lower (P=0.005). Trends of mtDNA/gDNA ratio differed according to inner cell mass (ICM) and trophectoderm (TE) levels, but not significantly. mtDNA/gDNA ratio in day 3 culture medium was not significantly improved over morphological scores. CONCLUSION We hereby show the correlation of mtDNA/gDNA ratio in the culture medium of developing embryos. The correlation between the mtDNA/gDNA ratio and early embryonic development was controversial. Furthermore, an increase in mtDNA/gDNA ratio might indicate reduced development potential, but the difference remains insufficient for application as a clinical predictor.
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Affiliation(s)
- Qing Zhang
- Department of Reproductive Medicine, Women and Children’s Hospital Affiliated to Xiamen University, Xiamen, Fujian, People’s Republic of China
- Xiamen Key Laboratory of Reproduction and Genetics, Xiamen, Fujian, People’s Republic of China
| | - Hong Ji
- Department of Reproductive Medicine, Women and Children’s Hospital Affiliated to Xiamen University, Xiamen, Fujian, People’s Republic of China
- Xiamen Key Laboratory of Reproduction and Genetics, Xiamen, Fujian, People’s Republic of China
| | - Jian Shi
- Department of Reproductive Medicine, Women and Children’s Hospital Affiliated to Xiamen University, Xiamen, Fujian, People’s Republic of China
- Xiamen Key Laboratory of Reproduction and Genetics, Xiamen, Fujian, People’s Republic of China
| | - Longmei Wang
- Department of Reproductive Medicine, Women and Children’s Hospital Affiliated to Xiamen University, Xiamen, Fujian, People’s Republic of China
- Xiamen Key Laboratory of Reproduction and Genetics, Xiamen, Fujian, People’s Republic of China
| | - Lu Ding
- Department of Reproductive Medicine, Women and Children’s Hospital Affiliated to Xiamen University, Xiamen, Fujian, People’s Republic of China
- Xiamen Key Laboratory of Reproduction and Genetics, Xiamen, Fujian, People’s Republic of China
| | - Yufei Jiang
- Department of Reproductive Medicine, Women and Children’s Hospital Affiliated to Xiamen University, Xiamen, Fujian, People’s Republic of China
- Xiamen Key Laboratory of Reproduction and Genetics, Xiamen, Fujian, People’s Republic of China
| | - Xianjing Huang
- Department of Reproductive Medicine, Women and Children’s Hospital Affiliated to Xiamen University, Xiamen, Fujian, People’s Republic of China
- Xiamen Key Laboratory of Reproduction and Genetics, Xiamen, Fujian, People’s Republic of China
| | - Pingping Qiu
- Department of Reproductive Medicine, Women and Children’s Hospital Affiliated to Xiamen University, Xiamen, Fujian, People’s Republic of China
- Xiamen Key Laboratory of Reproduction and Genetics, Xiamen, Fujian, People’s Republic of China
| | - Ping Li
- Department of Reproductive Medicine, Women and Children’s Hospital Affiliated to Xiamen University, Xiamen, Fujian, People’s Republic of China
- Xiamen Key Laboratory of Reproduction and Genetics, Xiamen, Fujian, People’s Republic of China
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Guven S, Alanya Tosun S, Guvendag Guven ES. Mean blastomere diameter may predict clinical pregnancy in long agonist protocol intracytoplasmic sperm injection cycles with single embryo transfer. Middle East Fertil Soc J 2021. [DOI: 10.1186/s43043-021-00054-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The main purpose of this study was to investigate the effect of mean blastomere diameter (MBD) on pregnancy rates in in vitro fertilization (IVF) cases undergoing the long agonist cycle protocol. A total of 84 cases were evaluated within the scope of this observational prospective study. All cases were normoresponders, under 35 years old, with the long agonist protocol applied and single embryo (grade I or II) transfer performed. On the third day after ICSI, each embryo selected for transfer was subjected to measurement of the mean blastomere diameter (MBD) at ×25 magnification.
Results
The mean female age was 30.14 ± 3.32 years, and the total clinical pregnancy rate was 33.3%. In the group that got pregnant, MBD was found to be statistically significantly higher than in the nonpregnant group. In terms of predicting clinical pregnancy, when the MBD value of 49.73 μm was accepted as the best cutoff value, the sensitivity was calculated as 75% and specificity as 53.6%. Clinical pregnancy rate was 18.9% in cases below this value, whereas clinical pregnancy rate was 44.7% in cases with this value and above. In other words, when the MBD value rose above 49.73 μm from a value below 49.73 μm, the clinical pregnancy rate increased by an average of 2.3 times.
Conclusions
With MBD measurement, it is possible to select the embryo with the best implantation capability in microinjection cycles with the long luteal agonist protocol.
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Jankele R, Jelier R, Gönczy P. Physically asymmetric division of the C. elegans zygote ensures invariably successful embryogenesis. eLife 2021; 10:e61714. [PMID: 33620314 PMCID: PMC7972452 DOI: 10.7554/elife.61714] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 02/22/2021] [Indexed: 12/17/2022] Open
Abstract
Asymmetric divisions that yield daughter cells of different sizes are frequent during early embryogenesis, but the importance of such a physical difference for successful development remains poorly understood. Here, we investigated this question using the first division of Caenorhabditis elegans embryos, which yields a large AB cell and a small P1 cell. We equalized AB and P1 sizes using acute genetic inactivation or optogenetic manipulation of the spindle positioning protein LIN-5. We uncovered that only some embryos tolerated equalization, and that there was a size asymmetry threshold for viability. Cell lineage analysis of equalized embryos revealed an array of defects, including faster cell cycle progression in P1 descendants, as well as defects in cell positioning, division orientation, and cell fate. Moreover, equalized embryos were more susceptible to external compression. Overall, we conclude that unequal first cleavage is essential for invariably successful embryonic development of C. elegans.
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Affiliation(s)
- Radek Jankele
- Swiss Institute for Experimental Cancer Research (ISREC), School of Life Sciences, Swiss Federal Institute of Technology Lausanne (EPFL)LausanneSwitzerland
| | - Rob Jelier
- Centre of Microbial and Plant Genetics, Katholieke Universiteit LeuvenLeuvenBelgium
| | - Pierre Gönczy
- Swiss Institute for Experimental Cancer Research (ISREC), School of Life Sciences, Swiss Federal Institute of Technology Lausanne (EPFL)LausanneSwitzerland
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Fryc K, Nowak A, Kij B, Kochan J, Bartlewski PM, Murawski M. Timing of cleavage divisions determined with time-lapse imaging is linked to blastocyst formation rates and quality of in vitro-produced ovine embryos. Theriogenology 2020; 159:147-152. [PMID: 33157452 DOI: 10.1016/j.theriogenology.2020.10.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 10/21/2020] [Accepted: 10/24/2020] [Indexed: 10/23/2022]
Abstract
Time-lapse (TL) imaging provides a practical and safe tool to constantly monitor the development of in vitro-derived embryos. TL may help develop novel methods of predicting the timing of embryo cleavage that will lead to optimizing blastocyst cryopreservation or transfer. The primary objective of the present study was to employ TL imaging to examine associations among the division kinetics of ovine embryos, their quality and rates of development to the blastocyst stage. Oocytes were collected by ovary scarification from 78 Longwool ewes slaughtered in the breeding season (November-March). Cumulus oocyte complexes (COCs) were matured for 24 h in TCM 199 media containing 0.1 IU/mL LH/FSH and 10% FBS. In-vitro fertilization was carried out by co-incubation of semen and COCs for 19 h. Presumptive zygotes were placed in microwells, in droplets of Cult medium (Gynemed, Lensahn, Germany). Digital images of developing embryos were captured every 10 min by Primo Vision TL system (EVO+; Vitrolife, Göteburg, Sweden). The following time intervals were recorded: from IVF to the attainment of two-cell (t2), three-cells (t3) or four-cell (t4) stage, to morula detection (tM), blastulation (tSB) and blastocyst formation (tB). Lastly, the duration of the second cell cycle (cc2; t3-t2) and complete synchronous cell division (s2; t4-t3) were calculated, and the incidence of developmental anomalies noted. Out of 147 embryos selected for TL observations, 55 (37.4%) developed to the blastocyst stage (normally developing embryos, NE) and 92 (62.6%) failed to reach the blastocyst stage (arrested embryos, AE; P < 0.05). Mean t2, tM, s2 and cc2 were all less (P ≤ 0.02) in NE compared with AE. Approximately 61.9% of embryos exhibited developmental anomalies (35.5% in the NE group and 78.2% in the AE group; P < 0.05) and AE exceeded (P < 0.05) NE in the proportion of FRG (blastomeric fragmentation), IRR (blastomeres of irregular size after cleavage), DC (direct cleavage) and MA (multi-morphological aberrations). Of all NE, 63.6% were classified as good quality and 36.4% as poor quality blastocysts (P < 0.05). Good quality ovine blastocysts attained t2, t3, t4, tSB and tB stages earlier (P ≤ 0.03) than poor quality blastocysts and none of the poor quality blastocysts was seen to hatch. To recapitulate, the present results indicate that the kinetics of early ovine embryo development are significant predictors of their potential to develop to the blastocyst stage and the markers of blastocyst quality. Time-lapse imaging may serve as a useful technique for predicting the outcome and enhancing efficacy of in vitro embryo production in sheep.
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Affiliation(s)
- Karolina Fryc
- Department of Animal Nutrition and Biotechnology, and Fisheries, University of Agriculture in Kraków, 24/28 Mickiewicza Ave., 30-059, Cracow, Poland.
| | - Agnieszka Nowak
- Department of Animal Reproduction, Anatomy and Genomics, University of Agriculture in Kraków, 24/28 Mickiewicza Ave., 30-059, Cracow, Poland
| | - Barbara Kij
- Department of Animal Reproduction, Anatomy and Genomics, University of Agriculture in Kraków, 24/28 Mickiewicza Ave., 30-059, Cracow, Poland
| | - Joanna Kochan
- Department of Animal Reproduction, Anatomy and Genomics, University of Agriculture in Kraków, 24/28 Mickiewicza Ave., 30-059, Cracow, Poland
| | - Pawel M Bartlewski
- Department of Biomedical Sciences, Ontario Veterinary College, University of Guelph, 50 Stone Rd., Guelph, ON N1G 2W1, Canada
| | - Maciej Murawski
- Department of Animal Nutrition and Biotechnology, and Fisheries, University of Agriculture in Kraków, 24/28 Mickiewicza Ave., 30-059, Cracow, Poland
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Carnevale EM, Metcalf ES. Morphology, developmental stages and quality parameters of in vitro-produced equine embryos. Reprod Fertil Dev 2020; 31:1758-1770. [PMID: 31718765 DOI: 10.1071/rd19257] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 10/18/2019] [Indexed: 01/07/2023] Open
Abstract
Intracytoplasmic sperm injection (ICSI) is used to produce equine embryos invitro. The speed of embryo development invitro is roughly equivalent to what has been described for embryos produced invivo. Morphological evaluations of ICSI-produced embryos are complicated by the presence of debris and the dark nature of equine embryo cytoplasm. Morulas and early blastocysts produced invitro appear similar to those produced invivo. However, with expansion of the blastocyst, distinct differences are observed compared with uterine embryos. In culture, embryos do not undergo full expansion and thinning of the zona pellucida (ZP) or capsule formation. Cells of the inner cell mass (ICM) are dispersed, in contrast with the differentiated trophoblast and ICM observed in embryos collected from uteri. As blastocysts expand invitro, embryo cells often escape the ZP as organised or disorganised extrusions of cells, probably through the hole incurred during ICSI. Quality assessment of invitro-produced early stage equine embryos is in its infancy, because limited information is available regarding the relationship between morphology and developmental competence. Early embryo development invivo is reviewed in this paper, with comparisons made to embryo development invitro and clinical assessments from a laboratory performing commercial ICSI for >15 years.
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Affiliation(s)
- Elaine M Carnevale
- Department of Biomedical Sciences, Colorado State University, 1693 Campus Delivery, Fort Collins, CO 80523, USA; and Corresponding author.
| | - Elizabeth S Metcalf
- Departments of Obstetrics and Gynecology, and Andrology, Oregon Health Science and University, 3181 SW Sam Jackson Park Road, Portland, OR 97239-3098, USA
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Kuno T, Tachibana M, Fujimine-Sato A, Fue M, Higashi K, Takahashi A, Kurosawa H, Nishio K, Shiga N, Watanabe Z, Yaegashi N. A Preclinical Evaluation towards the Clinical Application of Oxygen Consumption Measurement by CERMs by a Mouse Chimera Model. Int J Mol Sci 2019; 20:ijms20225650. [PMID: 31726651 PMCID: PMC6888687 DOI: 10.3390/ijms20225650] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/01/2019] [Accepted: 11/06/2019] [Indexed: 11/16/2022] Open
Abstract
We have developed an automated device for the measurement of oxygen consumption rate (OCR) called Chip-sensing Embryo Respiratory Measurement system (CERMs). To verify the safety and the significance of the OCR measurement by CERMs, we conducted comprehensive tests using a mouse model prior to clinical trials in a human in vitro fertilization (IVF) program. Embryo transfer revealed that the OCR measured by CERMs did not compromise the full-term development of mice or their future fertility, and was positively correlated with adenosine triphosphate (ATP) production and the mitochondrial membrane potential (ΔΨm), thereby indirectly reflecting mitochondrial oxidative phosphorylation (OXPHOS) activity. We demonstrated that the OCR is independent of embryo morphology (the size) and number of mitochondria (mitochondrial DNA copy number). The OCR correlated with the total cell numbers, whereas the inner cell mass (ICM) cell numbers and the fetal developmental rate were not. Thus, the OCR may serve as an indicator of the numbers of trophectoderm (TE) cells, rather than number or quality of ICM cells. However, implantation ability was neither correlated with the OCR, nor the embryo size in this model. This can probably be attributed to the limitation that chimeric embryos contain non-physiological high TE cells counts that are beneficial for implantation. CERMs can be safely employed in clinical IVF owing to it being a safe, highly effective, non-invasive, accurate, and quantitative tool for OCR measurement. Utilization of CERMs for clinical testing of human embryos would provide further insights into the nature of oxidative metabolism and embryonic viability.
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Affiliation(s)
- Takashi Kuno
- Department of Obstetrics and Gynecology, Tohoku University Hospital, Sendai 980-8574, Japan; (T.K.); (A.F.-S.); (M.F.); (K.H.); (A.T.); (N.S.); (Z.W.); (N.Y.)
| | - Masahito Tachibana
- Department of Obstetrics and Gynecology, Tohoku University Hospital, Sendai 980-8574, Japan; (T.K.); (A.F.-S.); (M.F.); (K.H.); (A.T.); (N.S.); (Z.W.); (N.Y.)
- Correspondence: ; Tel.: +81-22-717-7251; Fax: +81-22-717-7258
| | - Ayako Fujimine-Sato
- Department of Obstetrics and Gynecology, Tohoku University Hospital, Sendai 980-8574, Japan; (T.K.); (A.F.-S.); (M.F.); (K.H.); (A.T.); (N.S.); (Z.W.); (N.Y.)
| | - Misaki Fue
- Department of Obstetrics and Gynecology, Tohoku University Hospital, Sendai 980-8574, Japan; (T.K.); (A.F.-S.); (M.F.); (K.H.); (A.T.); (N.S.); (Z.W.); (N.Y.)
| | - Keiko Higashi
- Department of Obstetrics and Gynecology, Tohoku University Hospital, Sendai 980-8574, Japan; (T.K.); (A.F.-S.); (M.F.); (K.H.); (A.T.); (N.S.); (Z.W.); (N.Y.)
| | - Aiko Takahashi
- Department of Obstetrics and Gynecology, Tohoku University Hospital, Sendai 980-8574, Japan; (T.K.); (A.F.-S.); (M.F.); (K.H.); (A.T.); (N.S.); (Z.W.); (N.Y.)
| | - Hiroki Kurosawa
- Department of Obstetrics and Gynecology, Tohoku Medical and pharmaceutical university, Wakabayashi hospital, Sendai 984-8560, Japan;
| | - Keisuke Nishio
- Institute for Animal Experimentation, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan;
| | - Naomi Shiga
- Department of Obstetrics and Gynecology, Tohoku University Hospital, Sendai 980-8574, Japan; (T.K.); (A.F.-S.); (M.F.); (K.H.); (A.T.); (N.S.); (Z.W.); (N.Y.)
| | - Zen Watanabe
- Department of Obstetrics and Gynecology, Tohoku University Hospital, Sendai 980-8574, Japan; (T.K.); (A.F.-S.); (M.F.); (K.H.); (A.T.); (N.S.); (Z.W.); (N.Y.)
| | - Nobuo Yaegashi
- Department of Obstetrics and Gynecology, Tohoku University Hospital, Sendai 980-8574, Japan; (T.K.); (A.F.-S.); (M.F.); (K.H.); (A.T.); (N.S.); (Z.W.); (N.Y.)
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Abstract
While luteinizing hormone (LH) activity is believed to play a role in follicle maturation, human chorionic gonadotropin (hCG) might play an important role in implantation process. We aimed to investigate whether addition of human menopausal gonadotropin (hMG) in recombinant-follicle-stimulating hormone (r-FSH) started GnRH antagonist controlled ovarian hyperstimulation (COH) cycles might enhance implantation rate and improve in vitro fertilization (IVF) success. A total of 246 patients undergoing GnRH antagonist IVF cycles were analyzed. One hundred and twenty-three cycles (%50) were treated with only r-FSH and 123 cycles were treated with r-FSH plus hp-hMG combination. Total gonadotropin doses, total number of oocytes retrieved, metaphase 2 (MII) oocytes, top quality embryos, fertilization and implantation rates, clinical pregnancy rates (CPRs) and ovarian hyperstimulation syndrome (OHSS) rates were compared between the groups. Both groups were comparable in terms of demographic details and baseline characteristics. Peak estradiol and progesterone levels in hCG trigger day, number of retrieved oocytes and top quality embryo counts, fertilization rates were similar between the groups. In r-FSH + hp-hMG group, significantly higher implantation rates (35.3% vs 24.3%, p=.017), CPRs (51.2% vs 35.8%, p=.015) and lower OHSS rates (1.6% vs 7.4%, p = .03) were observed respectively compared to r-FSH only treated patients. In conclusion, addition of hp-hMG on the day of antagonist initiation might increase CPRs. A better endometrial receptivity associated with higher implantation rates might be achieved due to hCG component in hp-hMG.
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Affiliation(s)
- Ozgur Kan
- Department of Obstetrics and Gynecology, Faculty of Medicine, Hitit University, Corum, Turkey
| | - Coskun Simsir
- Department of Obstetrics and Gynecology, Liv Hospital, Ankara, Turkey
| | - Cem Somer Atabekoglu
- Department of Obstetrics and Gynecology, Faculty of Medicine, Ankara University, Ankara, Turkey
| | - Murat Sonmezer
- Department of Obstetrics and Gynecology, Faculty of Medicine, Ankara University, Ankara, Turkey
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Abstract
Previous studies have suggested that aneuploidy rates are co-related with cell asymmetry at the cleavage stage. A retrospective study was carried out to determine the significance of blastomere symmetry at the 4-cell stage on blastocyst grade and ploidy status. 732 Day 5/6 blastocysts from 191 patients undergoing Pre-implantation Genetic Testing for Aneuploidy were analysed with time-lapse imaging (Embryoscope, Vitrolife) during 2017. Blastomere symmetry was measured at the first image of 4-cells on Day 2 by tabulating the mean diameter of 2 lines drawn perpendicularly on each blastomere. Symmetry was defined as the blastomere diameter difference of [Formula: see text] 25%. Trophectoderm (TE) biopsy was performed on Day 5/6 followed by chromosomal evaluation using Next Generation Sequencing (VeriSeq Protocol, Illumina). Blastocyst grade was classified as either “Good” (inner cell mass (ICM) and TE, AA respectively), “Fair/Good” (AB, BA), “Fair” (BB) and “Poor” (early blastocyst grade 2 or TE grading of C). The significance of blastomere symmetry on blastocyst grade and ploidy status was measured using chi-square tests. There was no significance difference in resulting blastocyst quality for symmetrical and asymmetrical embryos (Table 1: p [Formula: see text] 0.10). Furthermore, there was no significance difference in the euploid rate (42.5% vs. 45.3%) or mosaic rate (22.1% vs. 16.2%) between symmetrical and asymmetrical embryos (p [Formula: see text] 0.24). In conclusion, the presence of asymmetrical blastomeres at the 4-cell stage do not impact the good quality blastocyst formation rate and euploidy rate for embryos that progress into blastocysts. However, this study excludes embryos that do not develop to the blastocyst stage and those with erratic division patterns, direct cleavage and reverse cleavage on Day 2, both of which have potential to influence ploidy result. Asymmetrical 4-cell embryos have the potential for high quality euploid blastocyst progression and can be considered for day 2 embryo transfer in the absence of symmetrical 4-cell embryos.
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Affiliation(s)
- Diana Chieh Xing Tain
- Sunfert International Fertility Centre, Unit 2-2, Level 2, Nexus, Bangsar South, 7, Jalan Kerinchi, 59200 Kuala Lumpur, Malaysia
| | - Michelle Sheng Rong Lim
- Sunfert International Fertility Centre, Unit 2-2, Level 2, Nexus, Bangsar South, 7, Jalan Kerinchi, 59200 Kuala Lumpur, Malaysia
| | - Bee Lian Ng
- Sunfert International Fertility Centre, Unit 2-2, Level 2, Nexus, Bangsar South, 7, Jalan Kerinchi, 59200 Kuala Lumpur, Malaysia
| | - Elizabeth Hammond
- Fertility Associates, Level 3, Ascot Central, 7 Ellerslie Racecourse Drive, Private Bag 28910, Remuera, Auckland 1051, New Zealand
| | - Pak Seng Wong
- Sunfert International Fertility Centre, Unit 2-2, Level 2, Nexus, Bangsar South, 7, Jalan Kerinchi, 59200 Kuala Lumpur, Malaysia
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Blank C, Duijf IT, Slappendel E, Mischi M, Houterman S, Maas JWM, de Sutter P, Schoot BC. External validation of a prediction model to select the best day-three embryo for transfer in in vitro fertilization or intracytoplasmatic sperm injection procedures. Fertil Steril 2018; 110:917-24. [PMID: 30316438 DOI: 10.1016/j.fertnstert.2018.06.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 05/12/2018] [Accepted: 06/04/2018] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate the multivariate embryo selection model by van Loendersloot et al. (2014) (VL) in a different geographical context. DESIGN This is a retrospective external validation study of a 5-year cohort of women undergoing in vitro fertilization or intracytoplasmatic sperm injection. SETTING Two outpatient fertility clinics. PATIENT(S) A total of 1,197 women who underwent 1,610 fresh in vitro fertilization or intracytoplasmatic sperm injection cycles with single embryo transfer were included. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) The area under the receiver operating characteristics curve for diagnostic efficacy was used to assess the discriminative value of the model. Calibration for testing the validity of the VL model was performed using the Hosmer-Lemeshow goodness-of-fit test and a calibration plot. RESULT(S) Three hundred thirty-three patients (21%) achieved a viable pregnancy of at least 11 weeks. The area under the receiver operating characteristics curve using the VL model was 0.68. No significant difference between the predicted implantation rate and the observed implantation rates was showed using the Hosmer-Lemeshow (X2= 6.70). The calibration plot showed an intercept of the regression line of 0.34 and the estimated slope was 0.72. CONCLUSION The investigated VL model was able to distinguish between higher and lower implantation potential of embryos in our clinical setting.
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Ashrafi M, Arabipoor A, Yahyaei A, Zolfaghari Z, Ghaffari F. Does the "delayed start" protocol with gonadotropin-releasing hormone antagonist improve the pregnancy outcome in Bologna poor responders? a randomized clinical trial. Reprod Biol Endocrinol 2018; 16:124. [PMID: 30593268 PMCID: PMC6311084 DOI: 10.1186/s12958-018-0442-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 12/10/2018] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND Recently, a novel approach with delaying the start of controlled ovarian stimulation along with gonadotropin-releasing hormone (GnRH) antagonist pretreatment for 7 days after estrogen priming for further suppression of endogenous follicle stimulating hormone (FSH) during the early follicular phase, resulting in more FSH-responsive follicles and thus improving synchronous follicular development was introduced. Two clinical trials have examined this strategy and reported controversial results. This study aimed to compare the effect of delayed-start GnRH antagonist protocol and standard GnRH antagonist in patients with poor ovarian response (POR) undergoing in vitro fertilization (IVF)/ intracytoplasmic sperm injection (ICSI). METHODS This randomized clinical trial was conducted at infertility department of Royan Institute from January 2017 to June 2018. Poor ovarian response was defined according to the Bologna criteria. The eligible women were randomly allocated into an experimental and control groups. In experimental group, patients received delayed-start GnRH antagonist protocol with estrogen priming followed by early follicular-phase GnRH antagonist treatment for 7 days before ovarian stimulation with gonadotropin and in control group, patients treated with estrogen priming antagonist protocol. IVF/ICSI outcomes were compared between groups. RESULTS Among all the 250 patients examined 156 women were eligible for study and finally 120 patients were allocated to intervention (n = 60) and control (n = 60) groups. Demographic characteristics and hormonal profiles of the patients did not differ between groups. The statistical analysis showed that there were significant differences between groups regarding the total dose of used gonadotropins (P < 0.001), stimulation duration (P < 0.001), number of retrieved oocytes (P = 0.01) and top quality embryo (P < 0.001) and also cancellation (P = 0.002) and fertilization rates (P = 0.002). CONCLUSION On the basis of present results the delayed-start protocol in poor responders can improve the fertilization rate and quality of embryos and reduce the cycle cancellation but have no significant effect on clinical pregnancy rate; however, larger randomized clinical trials are required to compare it with other protocols. TRIAL REGISTRATION NCT, NCT03134690. Registered 1 May 2017 - Retrospectively registered, http://www.clinicaltrial.gov / NCT03134690.
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Affiliation(s)
- Mahnaz Ashrafi
- grid.417689.5Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for reproductive biomedicine, ACECR, P.O Box: 19395-4644, No 12, East Hafez Avenue, Banihashem Street, Resalat highway, Tehran, Iran
| | - Arezoo Arabipoor
- grid.417689.5Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for reproductive biomedicine, ACECR, P.O Box: 19395-4644, No 12, East Hafez Avenue, Banihashem Street, Resalat highway, Tehran, Iran
| | - Azar Yahyaei
- grid.417689.5Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for reproductive biomedicine, ACECR, P.O Box: 19395-4644, No 12, East Hafez Avenue, Banihashem Street, Resalat highway, Tehran, Iran
| | - Zahra Zolfaghari
- grid.417689.5Department of Epidemiology and Reproductive Health, Reproductive Epidemiology Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Firouzah Ghaffari
- grid.417689.5Department of Endocrinology and Female Infertility, Reproductive Biomedicine Research Center, Royan Institute for reproductive biomedicine, ACECR, P.O Box: 19395-4644, No 12, East Hafez Avenue, Banihashem Street, Resalat highway, Tehran, Iran
- 0000 0004 4911 7066grid.411746.1Obstetrics and Gynecology Department, Faculty of Medicine, Iran University of Medical Science, Tehran, Iran
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Huang B, Ren X, Zhu L, Wu L, Tan H, Guo N, Wei Y, Hu J, Liu Q, Chen W, Liu J, Li D, Liao S, Jin L. Is differences in embryo morphokinetic development significantly associated with human embryo sex?†. Biol Reprod 2018; 100:618-623. [PMID: 30371742 DOI: 10.1093/biolre/ioy229] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 09/21/2018] [Accepted: 10/25/2018] [Indexed: 11/12/2022] Open
Affiliation(s)
- Bo Huang
- Reproductive Medical Center, Tongji Hospital, Tongji College of Medicine, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Xinling Ren
- Reproductive Medical Center, Tongji Hospital, Tongji College of Medicine, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Lixia Zhu
- Reproductive Medical Center, Tongji Hospital, Tongji College of Medicine, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Li Wu
- Reproductive Medical Center, Tongji Hospital, Tongji College of Medicine, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Huiping Tan
- Reproductive Medical Center, Tongji Hospital, Tongji College of Medicine, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Na Guo
- Reproductive Medical Center, Tongji Hospital, Tongji College of Medicine, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Yulan Wei
- Reproductive Medical Center, Tongji Hospital, Tongji College of Medicine, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Juan Hu
- Reproductive Medical Center, Tongji Hospital, Tongji College of Medicine, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Qun Liu
- Reproductive Medical Center, Tongji Hospital, Tongji College of Medicine, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Wen Chen
- Reproductive Medical Center, Tongji Hospital, Tongji College of Medicine, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Jing Liu
- Reproductive Medical Center, Tongji Hospital, Tongji College of Medicine, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Dan Li
- Reproductive Medical Center, Tongji Hospital, Tongji College of Medicine, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Shujie Liao
- Reproductive Medical Center, Tongji Hospital, Tongji College of Medicine, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Lei Jin
- Reproductive Medical Center, Tongji Hospital, Tongji College of Medicine, Huazhong University of Science and Technology, Wuhan, People's Republic of China
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Rad RM, Saeedi P, Au J, Havelock J. A hybrid approach for multiple blastomeres identification in early human embryo images. Comput Biol Med 2018; 101:100-111. [DOI: 10.1016/j.compbiomed.2018.08.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 08/01/2018] [Accepted: 08/01/2018] [Indexed: 10/28/2022]
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Seikkula J, Oksjoki S, Hurme S, Mankonen H, Polo-Kantola P, Jokimaa V. Pregnancy and perinatal outcomes after transfer of binucleated or multinucleated frozen–thawed embryos: a case–control study. Reprod Biomed Online 2018. [DOI: 10.1016/j.rbmo.2018.02.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Hur YS, Ryu EK, Hyun CS, Yang SH, Yoon SH, Lim KS, Lee WD, Lim JH. Retrospective study of single vitrified-warmed blastocyst transfer cycles according to the presence of morphokinetic variables. Clin Exp Reprod Med 2018; 45:52-55. [PMID: 29662827 PMCID: PMC5897249 DOI: 10.5653/cerm.2018.45.1.52] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 11/29/2017] [Accepted: 01/15/2018] [Indexed: 11/29/2022] Open
Abstract
This study retrospectively assessed whether time-lapse data relating to developmental timing and morphology were associated with clinical outcomes, with the eventual goal of using morphokinetic variables to select embryos prospectively for cryopreservation. In this study, we examined the clinical outcomes of single vitrified-warmed blastocyst transfer cycles that were cultured in a time-lapse incubation system. The morphokinetic variables included uneven pronuclei, an uneven blastomere, multinucleation, and direct, rapid, and irregular division. A total of 164 single vitrified-warmed blastocyst transfer cycles were analyzed (102 cycles of regularly developed blastocysts and 62 cycles of blastocysts with morphokinetic variables). No significant differences in the age of females or the standard blastocyst morphology were found between these two groups. The regularly developed blastocysts showed significantly higher implantation and clinical pregnancy rates than the blastocysts exhibiting morphokinetic variables (30.4% vs. 9.7% and 37.3% vs. 14.5%, respectively; p<0.01). The blastocysts that exhibited morphokinetic variables showed different mean development times compared with the regularly developed blastocysts. Although morphokinetic variables are known to have fatal impacts on embryonic development, a considerable number of embryos developed to the blastocyst stage. Morphokinetic variables had negative effects on the implantation and clinical pregnancy rates in vitrified-warmed blastocyst transfer cycles. These findings suggest that blastocysts cultured in a time-lapse incubation system should be considered for selective cryopreservation according to morphokinetic variables.
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Fu J, Qu RG, Zhang YJ, Gu RH, Li X, Sun YJ, Wang L, Sang Q, Sun XX. Screening of miRNAs in human follicular fluid reveals an inverse relationship between microRNA-663b expression and blastocyst formation. Reprod Biomed Online 2018; 37:25-32. [PMID: 29703434 DOI: 10.1016/j.rbmo.2018.03.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2017] [Revised: 03/24/2018] [Accepted: 03/27/2018] [Indexed: 11/21/2022]
Abstract
RESEARCH QUESTION Are miRNAs found in follicular fluid related to blastocyst formation from the corresponding oocytes? DESIGN In this study, 91 individual follicular fluid samples from single follicles containing mature oocytes from 91 women were collected and classified into group 1 (n = 38) with viable blastocysts, and group 2 (n = 53) with no blastocyst. TaqMan human miRNA cards and quantitative reverse transcription polymerase chain reaction were used to identify differently expressed follicular fluid miRNAs between the two groups. RESULTS We found MIR-663B to be significantly differentially expressed in follicular fluid of oocytes that yielded viable blastocysts versus those that did not develop into blastocysts (14.16 ± 7.00 versus 23.68 ± 17.02; P = 0.019), as well as for those which develop into blastocysts with good morphology versus those with poor morphology (11.69 ± 3.49 versus 20.16 ± 9.33; P = 0.003). CONCLUSIONS MIR-663B expression levels in human follicular fluid samples were significantly negatively related to viable blastocyst formation and may become an objective evaluation criterion for embryo development potential after IVF.
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Mascarenhas M, Fox SJ, Thompson K, Balen AH. Cumulative live birth rates and perinatal outcomes with the use of time-lapse imaging incubators for embryo culture: a retrospective cohort study of 1882 ART cycles. BJOG 2018; 126:280-286. [PMID: 29443441 DOI: 10.1111/1471-0528.15161] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/04/2018] [Indexed: 01/28/2023]
Abstract
OBJECTIVE Comparison of live birth rates and the perinatal outcomes after fresh and frozen embryo transfer between time-lapse imaging (TLI) and standard culture (SC) incubators. DESIGN Retrospective cohort study. SETTING A single tertiary level IVF unit. POPULATION Women undergoing IVF between January 2014 and October 2015. METHODS Comparison was done between 1064 IVF cycles using TLI (TLI cycles) and 818 IVF cycles using SC (SC cycles). MAIN OUTCOME MEASURES Cumulative live birth rate per oocyte retrieval and perinatal outcomes including birthweight, gestational age, preterm birth (PTB) (<37 weeks), early preterm birth (PTB; <32 weeks), low birthweight (LBW; <2500 g), very LBW (<1500 g) and macrosomia (>4500 g). RESULTS The fresh embryo transfer live birth rate was noted to be higher for TLI cycles [TLI 36.8 versus SC 33.9%, adjusted odds ratio (aOR) 1.28, 95% CI 1.05-1.57], but the frozen embryo transfer live birth rates were not significantly different. The mean birthweight was higher in the TLI group after both fresh [adjusted mean difference (aMD) 174.78 g, 95% CI 64.80-284.77] and frozen embryo transfers (aMD 175.91 g, 95% CI 16.98-334.84). After a fresh embryo transfer, there was a lower risk of early PTB and very LBW in the TLI group. Among frozen embryo transfers, there was a lower risk of early PTB and LBW in the TLI group. CONCLUSIONS TLI incubators are associated with improved perinatal outcomes and higher mean birthweight after fresh and frozen embryo transfer. TWEETABLE ABSTRACT Time-lapse imaging incubators in IVF improve perinatal outcomes after both fresh and frozen embryo transfers.
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Affiliation(s)
- M Mascarenhas
- Leeds Fertility, Leeds Teaching Hospital NHS Trust, Leeds, UK
| | - S J Fox
- Leeds Fertility, Leeds Teaching Hospital NHS Trust, Leeds, UK
| | - K Thompson
- Leeds Fertility, Leeds Teaching Hospital NHS Trust, Leeds, UK
| | - A H Balen
- Leeds Fertility, Leeds Teaching Hospital NHS Trust, Leeds, UK
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Pribenszky C, Nilselid A, Montag M. Response: time-lapse systems for ART. Reprod Biomed Online 2018; 36:290-2. [DOI: 10.1016/j.rbmo.2017.12.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 11/15/2017] [Accepted: 12/15/2017] [Indexed: 11/23/2022]
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Naredi N, Singh S, Lele P, Nagraj N. Severe ovarian hyperstimulation syndrome: Can we eliminate it through a multipronged approach? Med J Armed Forces India 2018; 74:44-50. [PMID: 29386731 PMCID: PMC5771764 DOI: 10.1016/j.mjafi.2017.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 04/24/2017] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Prevention of severe Ovarian Hyperstimulation Syndrome (OHSS), a potentially fatal complication of controlled ovarian hyperstimulation has been the aim of all fertility experts. Various pharmacologic and non-pharmacologic interventions have been instituted but the results have been conflicting. These preventive strategies were administered in isolation or as a combination of few aiming to eliminate this iatrogenic sequel. This study aimed to eliminate severe OHSS by multipronged approach incorporating almost all preventive modalities available in patients at high risk for this dreadful complication. METHODS It was a prospective observational study wherein 112 high risk patients planned for IVF were studied. The multipronged approach was in the form administering calcium gluconate infusion, cabergoline, albumin infusion, GnRH antagonist in luteal phase in addition to elective cryopreservation of embryos. The primary outcome measure was incidence of severe OHSS in the study group and the rate of hospitalisation. The secondary outcome measure was the number of days required for complete recovery and resolution of signs and symptoms. RESULTS Out of the 112 high risk patients only one patient (1/112; 0.9%) developed severe OHSS with an overall incidence of 0.095% of severe OHSS in all the cycles. There was no biochemical or haematological derangement in any of the high risk patients. CONCLUSION Although this is the first study evaluating the multipronged approach in preventing the dreaded complication of severe OHSS, it does add to the knowledge that targeting the various pathophysiological pathways at different time frames will bring about prevention of OHSS but further randomised studies may reveal superiority of one intervention over the other.
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Affiliation(s)
- Nikita Naredi
- Classified Specialist (Obst & Gynae) & IVF Specialist, Assisted Reproductive Technology Centre, Command Hospital (Southern Command), Pune 411040, India
| | - S.K. Singh
- Classified Specialist (Obst & Gynae), Command Hospital (Southern Command), Pune 411040, India
| | - Prasad Lele
- Senior Advisor (Obst & Gynae) & IVF Specialist, Command Hospital (Eastern Command), Kolkata, India
| | - N. Nagraj
- Classified Specialist (Obst & Gynae) & IVF Specialist, Assisted Reproductive Technology Centre, Army Hospital (R&R), New Delhi 110 010, India
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