1
|
Li L, Zhou X, Liu W, Chen Z, Xiao X, Deng G. Supplementation with NAD+ and its precursors: A rescue of female reproductive diseases. Biochem Biophys Rep 2024; 38:101715. [PMID: 38698835 PMCID: PMC11063225 DOI: 10.1016/j.bbrep.2024.101715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 04/14/2024] [Accepted: 04/17/2024] [Indexed: 05/05/2024] Open
Abstract
Nicotinamide adenine dinucleotide (NAD+) is an essential coenzyme involved in many pathophysiological processes. Supplementation with NAD+ and its precursors has been demonstrated as an emerging therapeutic strategy for the diseases. NAD+ also plays an important role in the reproductive system. Here, we summarize the function of NAD+ in various reproductive diseases and review the application of NAD+ and its precursors in the preservation of reproductive capacity and the prevention of embryonic malformations. It is shown that NAD+ shows good promise as a therapeutic approach for saving reproductive capacity.
Collapse
Affiliation(s)
- Lan Li
- School of Integrated Chinese and Western Medicine, Hunan University of Chinese Medicine, Changsha, Hunan Province, China
| | - Xin Zhou
- The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan Province, China
| | - Wene Liu
- The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan Province, China
| | - Zhen Chen
- The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan Province, China
| | - Xiaoqin Xiao
- School of Integrated Chinese and Western Medicine, Hunan University of Chinese Medicine, Changsha, Hunan Province, China
- The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan Province, China
| | - Guiming Deng
- The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan Province, China
| |
Collapse
|
2
|
Boylan CF, Sambo KM, Neal-Perry G, Brayboy LM. Ex ovo omnia-why don't we know more about egg quality via imaging? Biol Reprod 2024; 110:1201-1212. [PMID: 38767842 PMCID: PMC11180616 DOI: 10.1093/biolre/ioae080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 05/14/2024] [Accepted: 05/17/2024] [Indexed: 05/22/2024] Open
Abstract
Determining egg quality is the foremost challenge in assisted reproductive technology (ART). Although extensive advances have been made in multiple areas of ART over the last 40 years, oocyte quality assessment tools have not much evolved beyond standard morphological observation. The oocyte not only delivers half of the nuclear genetic material and all of the mitochondrial DNA to an embryo but also provides complete developmental support during embryonic growth. Oocyte mitochondrial numbers far exceed those of any somatic cell, yet little work has been done to evaluate the mitochondrial bioenergetics of an oocyte. Current standard oocyte assessment in in vitro fertilization (IVF) centers include the observation of oocytes and their surrounding cell complex (cumulus cells) via stereomicroscope or inverted microscope, which is largely primitive. Additional oocyte assessments include polar body grading and polarized light meiotic spindle imaging. However, the evidence regarding the aforementioned methods of oocyte quality assessment and IVF outcomes is contradictory and non-reproducible. High-resolution microscopy techniques have also been implemented in animal and human models with promising outcomes. The current era of oocyte imaging continues to evolve with discoveries in artificial intelligence models of oocyte morphology selection albeit at a slow rate. In this review, the past, current, and future oocyte imaging techniques will be examined with the goal of drawing attention to the gap which limits our ability to assess oocytes in real time. The implications of improved oocyte imaging techniques on patients undergoing IVF will be discussed as well as the need to develop point of care oocyte assessment testing in IVF labs.
Collapse
Affiliation(s)
- Caitlin F Boylan
- University of North Carolina, Chapel Hill, NC, USA
- Eastern Virginia Medical School, Norfolk, VA, USA
| | - Keshia M Sambo
- Institute for Biochemistry and Biology, University of Potsdam, Potsdam, Germany
| | | | - Lynae M Brayboy
- Department of Neuropediatrics Charité-Universitätsmedizin Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
- Klinik für Pädiatrie m. S. Neurologie, Charité Campus Virchow Klinikum, Berlin, Germany
- Department of Reproductive Biology, Bedford Research Foundation, Bedford, MA, USA
| |
Collapse
|
3
|
Venturas M, Racowsky C, Needleman DJ. Metabolic imaging of human cumulus cells reveals associations with pregnancy and live birth. Hum Reprod 2024; 39:1176-1185. [PMID: 38719791 PMCID: PMC11145010 DOI: 10.1093/humrep/deae087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 04/04/2024] [Indexed: 06/04/2024] Open
Abstract
STUDY QUESTION Can fluorescence lifetime imaging microscopy (FLIM) detect associations between the metabolic state of cumulus cell (CC) samples and the clinical outcome of the corresponding embryos? SUMMARY ANSWER FLIM can detect significant variations in the metabolism of CC associated with the corresponding embryos that resulted in a clinical pregnancy versus those that did not. WHAT IS KNOWN ALREADY CC and oocyte metabolic cooperativity are known to be necessary for the acquisition of developmental competence. However, reliable CC biomarkers that reflect oocyte viability and embryo developmental competency have yet to be established. Quantitative measures of CC metabolism could be used to aid in the evaluation of oocyte and embryo quality in ART. STUDY DESIGN, SIZE, DURATION A prospective observational study was carried out. In total, 223 patients undergoing IVF with either conventional insemination or ICSI at a tertiary care center from February 2018 to May 2020 were included, with no exclusion criteria applied. PARTICIPANTS/MATERIALS, SETTING, METHODS This cohort had a mean maternal age of 36.5 ± 4.4 years and an average oocyte yield of 16.9 (range 1-50). One to four CC clusters from each patient were collected after oocyte retrieval and vitrified. CC metabolic state was assessed using FLIM to measure the autofluorescence of the molecules NAD(P)H and FAD+, which are essential for multiple metabolic pathways. CC clusters were tracked with their corresponding oocytes and associated embryos. Patient age, Day 3 and Day 5/6 embryo morphological grades, and clinical outcomes of embryos with traceable fate were recorded. Nine FLIM quantitative parameters were obtained for each CC cluster. We investigated associations between the FLIM parameters and patient maternal age, embryo morphological rank, ploidy, and clinical outcome, where false discovery rate P-values of <0.05 were considered statistically significant. MAIN RESULTS AND THE ROLE OF CHANCE A total of 851 CC clusters from 851 cumulus-oocyte complexes from 223 patients were collected. Of these CC clusters, 623 were imaged using FLIM. None of the measured CC FLIM parameters were correlated with Day 3 morphological rank or ploidy of the corresponding embryos, but FAD+ FLIM parameters were significantly associated with morphological rank of blastocysts. There were significant differences for FAD+ FLIM parameters (FAD+ fraction engaged and short lifetime) from CC clusters linked with embryos resulting in a clinical pregnancy compared with those that did not, as well as for CC clusters associated with embryos that resulted in a live birth compared those that did not. LIMITATIONS, REASONS FOR CAUTION Our data are based on a relatively low number of traceable embryos from an older patient population. Additionally, we only assessed CCs from 1 to 4 oocytes from each patient. Future work in a younger patient population with a larger number of traceable embryos, as well as measuring the metabolic state of CCs from all oocytes from each patient, would provide a better understanding of the potential utility of this technology for oocyte/embryo selection. WIDER IMPLICATIONS OF THE FINDINGS Metabolic imaging via FLIM is able to detect CC metabolic associations with maternal age and detects variations in the metabolism of CCs associated with oocytes leading to embryos that result in a clinical pregnancy and a live birth versus those that do not. Our findings suggest that FLIM of CCs may be used as a new approach to aid in the assessment of oocyte and embryo developmental competence in clinical ART. STUDY FUNDING/COMPETING INTEREST(S) National Institutes of Health grant NIH R01HD092550-03 (to C.R., and D.J.N.). Becker and Hickl GmbH and Boston Electronics sponsored research with the loaning of equipment for FLIM. D.J.N. and C.R. are inventors on patent US20170039415A1. TRIAL REGISTRATION NUMBER N/A.
Collapse
Affiliation(s)
- M Venturas
- Department of Molecular and Cellular Biology and School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
- Boston IVF-TheEugin Group, Waltham, MA, USA
| | - C Racowsky
- Department of Obstetrics and Gynecology, Brigham & Women’s Hospital and Harvard Medical School, Boston, MA, USA
- Department of Obstetrics and Gynecology and Reproductive Medicine, Hospital Foch, Suresnes, France
| | - D J Needleman
- Department of Molecular and Cellular Biology and School of Engineering and Applied Sciences, Harvard University, Cambridge, MA, USA
- Center for Computational Biology, Flatiron Institute, New York, USA
| |
Collapse
|
4
|
Park JK, Jeon Y, Bang S, Kim JW, Kwak IP, Lee WS. Time-lapse imaging of morula compaction for selecting high-quality blastocysts: a retrospective cohort study. Arch Gynecol Obstet 2024; 309:2897-2906. [PMID: 38649499 DOI: 10.1007/s00404-024-07461-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 03/04/2024] [Indexed: 04/25/2024]
Abstract
PURPOSE Before blastocyst development, embryos undergo morphological and metabolic changes crucial for their subsequent growth. This study aimed to investigate the relationship between morula compaction and blastocyst formation and the subsequent chromosomal status of the embryos. METHODS This retrospective cohort study evaluated embryo development (n = 371) using time-lapse imaging; 94 blastocysts underwent preimplantation genetic testing for aneuploidy (PGT-A). RESULTS The embryos were classified as fully (Group 1, n = 194) or partially (Group 2, n = 177) compacted. Group 1 had significantly higher proportions of good- and average-quality blastocysts than Group 2 (21.6% vs. 3.4%, p = 0.001; 47.9% vs. 26.6%, p = 0.001, respectively). The time from the morula stage to the beginning and completion of compaction and blastocyst formation was significantly shorter in Group 1 than in Group 2 (78.6 vs. 82.4 h, p = 0.001; 87.0 vs. 92.2 h, p = 0.001; 100.2 vs. 103.7 h, p = 0.017, respectively). Group 1 embryos had larger surface areas than Group 2 embryos at various time points following blastocyst formation. Group 1 blastocysts had significantly higher average expansion rates than Group 2 blastocysts (653.6 vs. 499.2 μm2/h, p = 0.001). PGT-A revealed a higher proportion of euploid embryos in Group 1 than in Group 2 (47.2% vs. 36.6%, p = 0.303). CONCLUSION Time-lapse microscopy uncovered a positive relationship between compaction and blastocyst quality and its association with embryo ploidy. Hence, compaction evaluation should be prioritized before blastocyst selection for transfer or cryopreservation.
Collapse
Affiliation(s)
- Jae Kyun Park
- Department of Obstetrics and Gynecology, Fertility Center of CHA Gangnam Medical Center, CHA University School of Medicine, 566 Nonhyeon-ro, Gangnam-gu, Seoul, 06135, Korea
| | - Yunmi Jeon
- Department of Obstetrics and Gynecology, Fertility Center of CHA Gangnam Medical Center, CHA University School of Medicine, 566 Nonhyeon-ro, Gangnam-gu, Seoul, 06135, Korea
| | - Soyoung Bang
- Department of Obstetrics and Gynecology, Fertility Center of CHA Gangnam Medical Center, CHA University School of Medicine, 566 Nonhyeon-ro, Gangnam-gu, Seoul, 06135, Korea
| | - Ji Won Kim
- Department of Obstetrics and Gynecology, Fertility Center of CHA Gangnam Medical Center, CHA University School of Medicine, 566 Nonhyeon-ro, Gangnam-gu, Seoul, 06135, Korea.
| | - In Pyung Kwak
- Department of Obstetrics and Gynecology, Fertility Center of CHA Gangnam Medical Center, CHA University School of Medicine, 566 Nonhyeon-ro, Gangnam-gu, Seoul, 06135, Korea
| | - Woo Sik Lee
- Department of Obstetrics and Gynecology, Fertility Center of CHA Gangnam Medical Center, CHA University School of Medicine, 566 Nonhyeon-ro, Gangnam-gu, Seoul, 06135, Korea.
| |
Collapse
|
5
|
Gordon CE, Combelles CM, Lanes A, Patel J, Racowsky C. Cumulus cell co-culture in media drops does not improve rescue in vitro maturation of vitrified-warmed immature oocytes. F&S SCIENCE 2023; 4:185-192. [PMID: 37201752 DOI: 10.1016/j.xfss.2023.05.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 05/10/2023] [Accepted: 05/10/2023] [Indexed: 05/20/2023]
Abstract
OBJECTIVE To assess whether co-culture with vitrified-warmed cumulus cells (CCs) in media drops improves rescue in vitro maturation (IVM) of previously vitrified immature oocytes. Previous studies have shown improved rescue IVM of fresh immature oocytes when cocultured with CCs in a three-dimensional matrix. However, the scheduling and workload of embryologists would benefit from a simpler IVM approach, particularly in the setting of time-sensitive oncofertility oocyte cryopreservation (OC) cases. Although the yield of developmentally competent mature metaphase II (MII) oocytes is increased when rescue IVM is performed before cryopreservation, it is unknown whether maturation of previously vitrified immature oocytes is improved after coculture with CCs in a simple system not involving a three-dimensional matrix. DESIGN Randomized controlled trial. SETTING Academic hospital. PATIENTS A total of 320 (160 germinal vesicles [GVs] and 160 metaphase I [MI]) immature oocytes and autologous CC clumps were vitrified from patients who were undergoing planned OC or intracytoplasmic sperm injection from July 2020 until September 2021. INTERVENTIONS On warming, the oocytes were randomized to culture in IVM media with CCs (+CC) or without CCs (-CC). Germinal vesicles and MI oocytes were cultured in 25 μL (SAGE IVM medium) for 32 hours and 20-22 hours, respectively. MAIN OUTCOME MEASURES Oocytes with a polar body (MII) were randomized to confocal microscopy for analysis of spindle integrity and chromosomal alignment to assess nuclear maturity or to parthenogenetic activation to assess cytoplasmic maturity. Wilcoxon rank sum tests for continuous variables and the chi square or Fisher's exact test for categorical variables assessed statistical significance. Relative risks (RRs) and 95% confidence intervals (CIs) were calculated. RESULTS Patient demographic characteristics were similar for both the GV and MI groups after randomization to +CC vs. -CC. No statistically significant differences were observed between +CC vs. -CC groups regarding the percentage of MII from either GV (42.5% [34/80] vs. 52.5% [42/80]; RR 0.81; 95% CI: 0.57-1.15]) or MI (76.3% [61/80]; vs. 72.5% [58/80]; RR 1.05; 95% CI: 0.88-1.26]) oocytes. An increased percentage of GV-matured MIIs underwent parthenogenetic activation in the +CC group (92.3% [12/13] vs. 70.8% [17/24]), but the difference was not statistically significant (RR 1.30; 95% CI: 0.97-1.75), whereas the activation rate was identical for MI-matured oocytes (74.3% [26/35] vs. 75.0% [18/24], CC+ vs. CC-; RR 0.99; 95% CI: 0.74-1.32). No significant differences were observed between +CC vs. -CC groups for cleavage of parthenotes from GV-matured oocytes (91.7% [11/12] vs. 82.4% [14/17]) or blastulation (0 for both) or for MI-matured oocytes (cleavage: 80.8% [21/26] vs. 94.4% [17/18]; blastulation: 0 [0/26] vs. 16.7% [3/18]). Further, no significant differences were observed between +CC vs. -CC for GV-matured oocytes regarding incidence of bipolar spindles (38.9% [7/18] vs. 33.3% [5/15]) or aligned chromosomes (22.2% [4/18] vs. 0.0 [0/15]); or for MI-matured oocytes (bipolar spindle: 38.9% [7/18] vs. 42.9% [2/28]); aligned chromosomes (35.3% [6/17] vs. 24.1% [7/29]). CONCLUSIONS Cumulus cell co-culture in this simple two-dimensional system does not improve rescue IVM of vitrified, warmed immature oocytes, at least by the markers assessed here. Further work is required to assess the efficacy of this system given its potential to provide flexibility in a busy, in vitro fertilization clinic.
Collapse
Affiliation(s)
- Catherine E Gordon
- Brigham and Women's Hospital Center for Infertility and Reproductive Surgery, Harvard Medical School, Boston, Massachusetts.
| | | | - Andrea Lanes
- Brigham and Women's Hospital Center for Infertility and Reproductive Surgery, Harvard Medical School, Boston, Massachusetts
| | - Jay Patel
- Brigham and Women's Hospital Center for Infertility and Reproductive Surgery, Harvard Medical School, Boston, Massachusetts
| | - Catherine Racowsky
- Brigham and Women's Hospital Center for Infertility and Reproductive Surgery, Harvard Medical School, Boston, Massachusetts; Department of Obstetrics, Gynecology and Reproductive Medicine, Hôpital Foch, Suresnes, France
| |
Collapse
|
6
|
All that glitters is not gold: a stereological study of human donor oocytes. ZYGOTE 2023; 31:253-265. [PMID: 36938666 DOI: 10.1017/s0967199423000114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Abstract
Here we report a quantitative analysis of human metaphase II (MII) oocytes from a 22-year-old oocyte donor, retrieved after ovarian-controlled hyperstimulation. Five surplus donor oocytes were processed for transmission electron microscopy (TEM), and a stereological analysis was used to quantify the distribution of organelles, using the point-counting technique with an adequate stereological grid. Comparisons between means of the relative volumes (Vv) occupied by organelles in the three oocyte regions, cortex (C), subcortex (SC) and inner cytoplasm (IC), followed the Kruskal-Wallis test and Mann-Whitney U-test with Bonferroni correction. Life cell imaging and TEM analysis confirmed donor oocyte nuclear maturity. Results showed that the most abundant organelles were smooth endoplasmic reticulum (SER) elements (26.8%) and mitochondria (5.49%). Significant differences between oocyte regions were found for lysosomes (P = 0.003), cortical vesicles (P = 0.002) and large SER vesicles (P = 0.009). These results were quantitatively compared with previous results using prophase I (GV) and metaphase I (MI) immature oocytes. In donor MII oocytes there was a normal presence of cortical vesicles, SER tubules, SER small, medium and large vesicles, lysosomes and mitochondria. However, donor MII oocytes displayed signs of cytoplasmic immaturity, namely the presence of dictyosomes, present in GV oocytes and rare in MI oocytes, of SER very large vesicles, characteristic of GV oocytes, and the rarity of SER tubular aggregates. Results therefore indicate that the criterion of nuclear maturity used for donor oocyte selection does not always correspond to cytoplasmic maturity, which can partially explain implantation failures with the use of donor oocytes.
Collapse
|
7
|
Zhang Q, Ren J, Wang F, Pan M, Cui L, Li M, Qu F. Mitochondrial and glucose metabolic dysfunctions in granulosa cells induce impaired oocytes of polycystic ovary syndrome through Sirtuin 3. Free Radic Biol Med 2022; 187:1-16. [PMID: 35594990 DOI: 10.1016/j.freeradbiomed.2022.05.010] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/29/2022] [Accepted: 05/14/2022] [Indexed: 12/23/2022]
Abstract
Mitochondrial function and glucose metabolism play important roles in bidirectional signaling between granulosa cells (GCs) and oocytes. However, the factors associated with mitochondrial function and glucose metabolism of GCs in polycystic ovary syndrome (PCOS) are poorly understood, and their potential downstream effects on oocyte quality are still unknown. The aim of this study was to investigate whether there are alterations in mitochondrial-related functions and glucose metabolism in ovarian GCs of women with PCOS and the role of Sirtuin 3 (SIRT3) in this process. Here, we demonstrated that women with PCOS undergoing in vitro fertilization and embryo transfer had significantly lower rates of metaphase II oocytes, two-pronuclear fertilization, cleavage, and day 3 good-quality embryos. Germinal vesicle- and metaphase I-stage oocytes from women with PCOS exhibited increased mitochondrial reactive oxygen species (ROS), decreased mitochondrial membrane potential, and downregulation of glucose-6-phosphate dehydrogenase. GCs from women with PCOS presented significant alterations in mitochondrial morphology, amount, and localization, decreased membrane potential, reduced adenosine triphosphate (ATP) synthesis, increased mitochondrial ROS and oxidative stress, and insufficient oxidative phosphorylation (OXPHOS) together with decreased glycolysis. SIRT3 expression was significantly decreased in GCs of PCOS patients, and knockdown of SIRT3 in KGN cells could mimic the alterations in mitochondrial functions and glucose metabolism in PCOS GCs. SIRT3 knockdown changed the acetylation status of NDUFS1, which might induce altered mitochondrial OXPHOS, the generation of mitochondrial ROS, and eventually defects in the cellular insulin signaling pathway. These findings suggest that SIRT3 deficiency in GCs of PCOS patients may contribute to mitochondrial dysfunction, elevated oxidative stress, and defects in glucose metabolism, which potentially induce impaired oocytes in PCOS.
Collapse
Affiliation(s)
- Qing Zhang
- Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, 310006, China
| | - Jun Ren
- Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, 310006, China
| | - Fangfang Wang
- Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, 310006, China
| | - Manman Pan
- Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, 310006, China
| | - Long Cui
- Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, 310006, China
| | - Mingqian Li
- Tongde Hospital of Zhejiang Province, Hangzhou, Zhejiang, 310012, China
| | - Fan Qu
- Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, 310006, China.
| |
Collapse
|
8
|
Anagnostopoulou C, Rosas IM, Singh N, Gugnani N, Chockalingham A, Singh K, Desai D, Darbandi M, Manoharan M, Darbandi S, Leonardi Diaz SI, Gupta S, Henkel R, Sallam HN, Boitrelle F, Wirka KA, Agarwal A. Oocyte quality and embryo selection strategies: a review for the embryologists, by the embryologists. Panminerva Med 2022; 64:171-184. [PMID: 35179016 DOI: 10.23736/s0031-0808.22.04680-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
With the advance of assisted reproduction techniques, and the trend towards blastocyst culture and single embryo transfer, gamete and embryo assessment have gained greater importance in ART treatment. Embryo quality depends mainly on gamete quality and culture conditions. Oocyte maturity identification is necessary in order to plan fertilization timing. Mature oocytes at the metaphase II stage show a higher fertilization rate compared to immature oocytes. Morphology assessment is a critical yet challenging task that may serve as a good prognostic tool for future development and implantation potential if done effectively. Various grading systems have been suggested to assess embryos at pronuclear, cleavage, and blastocyst stages. By identifying the embryo with the highest implantation potential, it is possible to reduce the number of embryos transferred without compromising the chances of a successful pregnancy. Apart from the conventional morphology assessment, there are several invasive or non-invasive methods for embryo selection such as preimplantation genetic testing, morphokinetics, proteomics, metabolomics, oxygen consumption, and measurement of oxidative stress in culture medium. Morphokinetics is a method based on time-lapse technology and continuous monitoring of embryos. In this review, we aim to describe and compare the most effective and widely used methods for gamete and embryo assessment as well as embryo selection.
Collapse
Affiliation(s)
| | - Israel M Rosas
- Citmer Reproductive Medicine, IVF LAB, Mexico City, Mexico
| | | | - Nivita Gugnani
- Milann-The Fertility Centre, Delhi, India.,All India Institute of Medical Sciences, Delhi, India
| | | | - Keerti Singh
- Faculty of Medical Sciences, The University of the West Indies, Cave Hill Campus, Barbados
| | - Dimple Desai
- DPU IVF & ENDOSCOPY CENTER, Dr. D. Y. Patil Hospital & Research Centre, Pune, India
| | - Mahsa Darbandi
- Fetal Health Research Center, Hope Generation Foundation, Tehran, Iran.,Gene Therapy and Regenerative Medicine Research Center, Hope Generation Foundation, Tehran, Iran
| | | | - Sara Darbandi
- Fetal Health Research Center, Hope Generation Foundation, Tehran, Iran.,Gene Therapy and Regenerative Medicine Research Center, Hope Generation Foundation, Tehran, Iran
| | | | - Sajal Gupta
- American Center for Reproductive Medicine, Cleveland, OH, USA
| | - Ralf Henkel
- American Center for Reproductive Medicine, Cleveland, OH, USA.,Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK.,Department of Medical Bioscience, University of the Western Cape, Bellville, South Africa.,Logix X Pharma, Theale, Berkshire, UK
| | - Hassan N Sallam
- Department of Obstetrics and Gynaecology, Alexandria University Faculty of Medicine, Alexandria, Egypt
| | - Florence Boitrelle
- Reproductive Biology, Fertility Preservation, Andrology, CECOS, Poissy Hospital, Poissy, France.,Department of Biology, Reproduction, Epigenetics, Environment and Development, ParisSaclay University, UVSQ, INRAE, BREED, Jouyen-Josas, France
| | - Kelly A Wirka
- Fertility & Endocrinology, Medical Affairs, EMD Serono, USA
| | - Ashok Agarwal
- American Center for Reproductive Medicine, Cleveland, OH, USA -
| |
Collapse
|
9
|
Mohammadi Yeganeh S, Nazarian H, Habibi B, Novin M, Salehpour S, Novin M. Expression analysis of genes and MicroRNAs involved in recurrent implantation failure: New noninvasive biomarkers of implantation. BIOMEDICAL AND BIOTECHNOLOGY RESEARCH JOURNAL (BBRJ) 2022. [DOI: 10.4103/bbrj.bbrj_246_21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
10
|
Nikoloff N. The key role of cumulus cells in oocytes in vitro maturation protocols. Fertil Steril 2021; 116:1663. [PMID: 34742559 DOI: 10.1016/j.fertnstert.2021.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 10/07/2021] [Indexed: 11/29/2022]
Affiliation(s)
- Noelia Nikoloff
- IGEVET - Instituto de Genética Veterinaria "Ing. Fernando N. Dulout" (UNLP-CONICET LA PLATA), Facultad de Ciencias Veterinarias, Universidad Nacional de La Plata, La Plata, Buenos Aires, Argentina
| |
Collapse
|