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Ultrastructural Evaluation of the Human Oocyte at the Germinal Vesicle Stage during the Application of Assisted Reproductive Technologies. Cells 2022; 11:cells11101636. [PMID: 35626673 PMCID: PMC9139706 DOI: 10.3390/cells11101636] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/06/2022] [Accepted: 05/12/2022] [Indexed: 12/04/2022] Open
Abstract
After its discovery in 1825 by the physiologist J.E. Purkinje, the human germinal vesicle (GV) attracted the interest of scientists. Discarded after laparotomy or laparoscopic ovum pick up from the pool of retrieved mature oocytes, the leftover GV was mainly used for research purposes. After the discovery of Assisted Reproductive Technologies (ARTs) such as in vitro maturation (IVM), in vitro fertilization and embryo transfer (IVF-ET) and intracytoplasmic sperm injection (ICSI), its developing potential was explored, and recognized as an important source of germ cells, especially in the case of scarce availability of mature oocytes for pathological/clinical conditions or in the case of previous recurrent implantation failure. We here review the ultrastructural data available on GV-stage human oocytes and their application to ARTs.
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Qiu X, Wei Y, Liu C, Ding C, Zhao S. Hyperandrogen enhances apoptosis of human ovarian granulosa cells via up-regulation and demethylation of PDCD4. Gynecol Endocrinol 2020; 36:333-337. [PMID: 31423917 DOI: 10.1080/09513590.2019.1653844] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
Apoptosis of granulosa cells (GCs) induced by hyperandrogen plays a key role in the pathogenesis of polycystic ovary syndrome (PCOS). However, the mechanism of androgen-induced apoptosis of GCs has not been clarified to date. Recent studies have reported that PDCD4 expression is higher in PCOS patients and might be a key factor in PCOS progression. In this study, we aimed to investigate the role of PDCD4 in regulating apoptosis of human GCs and whether hyperandrogen regulate PDCD4 expression through DNA methylation. Overexpression of PDCD4 in human ovarian granulosa cell line KGN cells promoted cells apoptosis. Meanwhile, expression of caspase-3 and caspase-9 were significantly elevated. High concentration of testosterone treatment resulted in up-regulation of PDCD4 and a significant increase of apoptosis in KGN cells. In addition, knockdown of PDCD4 in KGN cells treated with high concentration of testosterone abolished the hyperandrogen-induced apoptosis. Furthermore, high concentration of testosterone down-regulated DNMT1, DNMT3A and DNMT3B expression and the methylation level in the promoter region of PDCD4 was decreased. In conclusion, PDCD4 can promote apoptosis of human ovarian GCs. The mechanism of hyperandrogen-induced apoptosis may be mediated by PDCD4. Furthermore, the up-regulation of PDCD4 induced by hyperandrogen may through demethylation of its promoter regions.
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Affiliation(s)
- Xuemei Qiu
- Department of Reproductive Center, Zaozhuang Maternal and Child Health Care Hospital, Zaozhuang, China
| | - Youhua Wei
- Medical Heredity and Prenatal Screening Department, Zaozhuang Maternal and Child Health Care Hospital, Zaozhuang, China
| | - Chengwen Liu
- Department of Obstetrics and Gynecology, Zaozhuang Maternal and Child Health Hospital, Zaozhuang, China
| | - Chen Ding
- Department of Reproductive Center, Zaozhuang Maternal and Child Health Care Hospital, Zaozhuang, China
| | - Shuqin Zhao
- Department of Reproductive Center, Zaozhuang Maternal and Child Health Care Hospital, Zaozhuang, China
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Wang XH, Wang HJ, Deng XH, Wang YL, Sun HL, Zhang XH, Li XX. Predictive value of ultrasound-related scoring system on embryo development in early pregnancy after IVF/ICSI: An observation of embryonic quality. Taiwan J Obstet Gynecol 2020; 58:501-504. [PMID: 31307741 DOI: 10.1016/j.tjog.2019.05.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/15/2019] [Indexed: 10/26/2022] Open
Abstract
OBJECTIVE This study aims to evaluate the value of the ultrasound-related scoring system on pregnant patients receiving assisted reproductive technology (IVF/ICSI) and early pregnancy outcome. MATERIALS AND METHODS This prospective study included 208 pregnant women receiving assisted reproductive technology (IVF/ICSI). The following ultrasound parameters were measured: gestational sac size, the proportion of the embryo and gestational sac (embryo/gestational sac), yolk sac size, and fetal cardiac activity. The above data were assigned according to the ongoing pregnancy rate (up to 14 weeks), and the score increased parallel to the pregnancy rate. All patients were grouped according to their scores. RESULTS Patients with a score of 4-5 had a low ongoing pregnancy rate of 14.29%, while patients with a score of 6-7 had an ongoing pregnancy rate of 55.56%. Surprisingly, patients with a score of 8-9 had an ongoing pregnancy rate of 97.22%. In addition, it was found that the ongoing pregnancy rate was 100% (36/36) in patients with a score of 9. Conversely, there was no ongoing pregnancy in patients with a score of 4. CONCLUSION First, this scoring system is strongly associated with an ongoing pregnancy of over 14 weeks. Second, some reassurance can be given to patients with favorable ultrasound parameters, regardless of maternal age or previous pregnancy loss. Third, it would be meaningless to continue the pregnancy in patients with a score of 4, according to the scoring system. Fourth, patients without cardiac activity and embryos at days 33-35 after embryo transfer should discontinue the pregnancy, while patients with embryos should proceed with the pregnancy.
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Affiliation(s)
- Xin-Hua Wang
- Department of Reproductive Medical Center, Qilu Hospital, Shandong University, 107 Wenhua Xi Road, Jinan, 250012, PR China; Department of Reproductive Medicine, Binzhou Medical University Hospital, 661 Huanghe 2 Road, Binzhou, 256603, China
| | - Hui-Jun Wang
- Department of Reproductive Medicine, Binzhou Medical University Hospital, 661 Huanghe 2 Road, Binzhou, 256603, China
| | - Xiao-Hui Deng
- Department of Reproductive Medical Center, Qilu Hospital, Shandong University, 107 Wenhua Xi Road, Jinan, 250012, PR China.
| | - Yan-Lin Wang
- Department of Reproductive Medicine, Binzhou Medical University Hospital, 661 Huanghe 2 Road, Binzhou, 256603, China
| | - Hong-Liang Sun
- Department of Reproductive Medicine, Binzhou Medical University Hospital, 661 Huanghe 2 Road, Binzhou, 256603, China
| | - Xiang-Hui Zhang
- Department of Reproductive Medicine, Binzhou Medical University Hospital, 661 Huanghe 2 Road, Binzhou, 256603, China
| | - Xiao-Xia Li
- Community Health Service Center of Pengli Subdistrict, 681 Bohai 9 Road, Binzhou, 256600, China
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Holubcová Z, Kyjovská D, Martonová M, Páralová D, Klenková T, Otevřel P, Štěpánová R, Kloudová S, Hampl A. Egg maturity assessment prior to ICSI prevents premature fertilization of late-maturing oocytes. J Assist Reprod Genet 2019; 36:445-452. [PMID: 30635815 PMCID: PMC6439061 DOI: 10.1007/s10815-018-1393-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 12/18/2018] [Indexed: 01/26/2023] Open
Abstract
PROPOSE The presence of metaphase II (MII) spindle together with the polar body (PB) indicates completion of oocyte maturation. This study was designed to explore if spindle imaging can be used to optimize timing of intracytoplasmic sperm injection (ICSI). METHODS The study involved 916 oocytes from 234 conventionally stimulated ICSI cycles with an unexpectedly poor ovarian response. All PB-displaying oocytes were subjected to polarized light microscopy (PLM) prior to ICSI. When MII spindle was absent in the majority of oocytes, ICSI was postponed and performed after additional spindle imaging. Fertilization, embryo development, and clinical outcome were evaluated with respect to the observed spindle pattern. RESULTS The visible spindle was absent in 32.64% of PB-displaying oocytes. The late-maturing oocytes extruding PB in vitro were less likely to exhibit a spindle signal than in vivo matured MII oocytes (38.86% vs. 89.84%). When fertilization was postponed, 59.39% of initially spindle-negative oocytes developed detectable MII spindle. Spindled eggs had significantly higher developmental potential, and the presence of the spindle has been identified as an independent measure for predicting the formation of the blastocyst. Embryos derived from spindle-positive oocytes also showed a higher chance to implant and develop to term. Notably, 11 children were conceived by finely timed fertilization of late-maturing oocytes which are normally discarded. CONCLUSIONS The study confirms the prognostic value of spindle imaging and demonstrates that immature oocytes can be clinically utilized and give rise to live births when the timing of ICSI is adjusted to their developmental stage.
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Affiliation(s)
- Zuzana Holubcová
- Reprofit International, Clinic of Reproductive Medicine, Hlinky 122, 603 00, Brno, Czech Republic. .,Faculty of Medicine, Department of Histology and Embryology, Masaryk University, Kamenice 3, 625 00, Brno, Czech Republic.
| | - Drahomíra Kyjovská
- Reprofit International, Clinic of Reproductive Medicine, Hlinky 122, 603 00, Brno, Czech Republic
| | - Martina Martonová
- Reprofit International, Clinic of Reproductive Medicine, Hlinky 122, 603 00, Brno, Czech Republic
| | - Darja Páralová
- Reprofit International, Clinic of Reproductive Medicine, Hlinky 122, 603 00, Brno, Czech Republic
| | - Tereza Klenková
- Reprofit International, Clinic of Reproductive Medicine, Hlinky 122, 603 00, Brno, Czech Republic
| | - Pavel Otevřel
- Reprofit International, Clinic of Reproductive Medicine, Hlinky 122, 603 00, Brno, Czech Republic
| | - Radka Štěpánová
- Faculty of Medicine, Department of Pharmacology, Masaryk University, Kamenice 5, 625 00, Brno, Czech Republic
| | - Soňa Kloudová
- Reprofit International, Clinic of Reproductive Medicine, Hlinky 122, 603 00, Brno, Czech Republic
| | - Aleš Hampl
- Faculty of Medicine, Department of Histology and Embryology, Masaryk University, Kamenice 3, 625 00, Brno, Czech Republic
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Siristatidis CS, Maheshwari A, Vaidakis D, Bhattacharya S. In vitro maturation in subfertile women with polycystic ovarian syndrome undergoing assisted reproduction. Cochrane Database Syst Rev 2018; 11:CD006606. [PMID: 30480769 PMCID: PMC6517219 DOI: 10.1002/14651858.cd006606.pub4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND Polycystic ovarian syndrome (PCOS) occurs in 4% to 7% of all women of reproductive age and 50% of women presenting with subfertility. Subfertility affects 15% to 20% of couples trying to conceive. A significant proportion of these women ultimately need assisted reproductive technology (ART). In vitro fertilisation (IVF) is one of the assisted reproduction techniques employed to raise the chances of achieving a pregnancy. For the standard IVF technique, stimulating follicle development and growth before oocyte retrieval is essential, for which a large number of different methods combining gonadotrophins with a gonadotrophin-releasing hormone (GnRH) agonist or antagonist are used. In women with PCOS, the supra-physiological doses of gonadotrophins used for controlled ovarian hyperstimulation (COH) often result in an exaggerated ovarian response, characterised by the development of a large cohort of follicles of uneven quality, retrieval of immature oocytes, and increased risk of ovarian hyperstimulation syndrome (OHSS). A potentially effective intervention for women with PCOS-related subfertility involves earlier retrieval of immature oocytes at the germinal-vesicle stage followed by in vitro maturation (IVM). So far, the only data available have derived from observational studies and non-randomised clinical trials. OBJECTIVES To assess the effectiveness and safety of IVM followed by IVF or ICSI versus conventional IVF or ICSI among women with PCOS undergoing assisted reproduction. SEARCH METHODS This is the second update of this review. We performed the search on 17 April 2018.The search was designed with the help of the Cochrane Gynaecology and Fertility Group Information Specialist, for all published and unpublished randomised controlled trials (RCTs).We searched the the Cochrane Gynaecology and Fertility Group Specialised Register of controlled trials, CENTRAL via the Cochrane Central Register of Studies Online, MEDLINE, Embase, CINAHL, and the trial registers for ongoing and registered trials and the Open Grey database for grey literature from Europe. We made further searches in the National Institute for Health and Care Excellence (NICE) fertility assessment and treatment guidelines. We handsearched reference lists of relevant systematic reviews and RCTs, together with PubMed and Google for any recent trials that have not yet been indexed in the major databases. SELECTION CRITERIA All RCTs on the intention to perform IVM before IVF or ICSI compared with conventional IVF or ICSI for subfertile women with PCOS, irrespective of language and country of origin. DATA COLLECTION AND ANALYSIS Two review authors independently selected studies, assessed risk of bias, extracted data from studies, and attempted to contact the authors of studies for which data were missing. Our primary outcomes were live birth per woman randomised and miscarriage. We performed statistical analysis using Review Manager 5. We assessed evidence quality using GRADE methods. MAIN RESULTS We found two RCTs suitable for inclusion in the review and six ongoing trials that have not yet reported results. Both included studies were published as abstracts in international conferences.Both studies were at unclear or high risk of bias for most of the seven domains assessed. Common problems were unclear reporting of study methods and lack of blinding. The main limitations in the overall quality of the evidence were high risk of bias and serious imprecision.There were no data on the primary outcomes of this review, namely live birth per woman randomised and miscarriage.Both studies reported clinical pregnancy rate: there was evidence of an effect between IVM and IVF, favouring the former (odds ratio 3.10, 95% confidence interval 1.06 to 9.00; 71 participants; 2 studies; I2 = 0%; very low-quality evidence). The incidence of OHSS was zero in both studies in both groups.There were no data for the other outcomes specified in this review. AUTHORS' CONCLUSIONS Though promising data on the in vitro maturation (IVM) technique have been published, unfortunately there is still no evidence from properly conducted randomised controlled trials upon which to base any practice recommendations regarding IVM before in vitro fertilisation (IVF) or intracytoplasmic sperm injection for women with polycystic ovarian syndrome. Regarding our secondary outcomes, very low-quality evidence showed that clinical pregnancy was higher with IVM when compared to IVF, whereas the incidence of ovarian hyperstimulation syndrome was zero in both studies in both groups. We are awaiting the results of six ongoing trials and eagerly anticipate further evidence from good-quality trials in the field.
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Affiliation(s)
- Charalampos S Siristatidis
- Medical School, National and Kapodistrian University of AthensAssisted Reproduction Unit, 3rd Department of Obstetrics and GynaecologyAttikon University HospitalRimini 1AthensChaidariGreece12462
| | - Abha Maheshwari
- University of AberdeenDivision of Applied Health SciencesAberdeenUKAB25 2ZL
| | - Dennis Vaidakis
- University of Athens3rd Department of Obstetrics and Gynecology'Attikon' Hospital, ChaidariAthensGreece
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Tabibnejad N, Aflatoonian A, Motamedzadeh L, Soleimani M, Sadeghian-Nodoushan F, Talebi AR. Assessing ICSI outcome by combining non-invasive indicators: Early time-lapse morphokinetics and apoptosis in associated cumulus cells among women with the polycystic ovarian syndrome. Mol Reprod Dev 2018; 85:865-874. [PMID: 29995338 DOI: 10.1002/mrd.23044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 07/07/2018] [Indexed: 01/07/2023]
Abstract
Cumulus cells features and embryo developmental events can be considered as noninvasive indicators for embryo selection and clinical outcomes. A combination of time-lapse morphokinetic parameters and cumulus cell apoptosis in women with polycystic ovarian syndrome (PCOS) was evaluated for predicting pregnancy outcome. We assessed a total of 547 embryos from 100 intracytoplasmic sperm injection (ICSI) cycles. Time-lapse records were interpreted in time to pronuclear fading (tPNf), time to 2 to 8 cells (t2-t8), direct cleavage, reverse cleavage, and also for the presence of multinucleation. Percentages of apoptosis were identified in 100 associated cumulus cell samples using the TDT-mediated dUTP-biotin nick end-labeling assay. The significant decrease of apoptotic cumulus cells was detected in patients with chemical and clinical pregnancies as well as live birth among patients PCOS and in the tubal infertility group (p > 0.05). Furthermore, significantly higher implantation rate and also significantly lower cases of early pregnancy loss were observed in the group of oocytes with less apoptotic cumulus cells. Multivariate logistic regression analysis showed that tPNf together with cumulus cell apoptosis were independent prognostic factors of chemical pregnancy, clinical pregnancy rate, and live birth. Time-lapse embryo parameters may not reflect the cumulus cell apoptosis rate. However, the rate of apoptotic cumulus cells is significantly associated with ICSI outcome using Day 3 embryo transfer.
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Affiliation(s)
- Nasim Tabibnejad
- Reproductive Biology Department, Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Abbas Aflatoonian
- Obstetrics and Gynecology Department, Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Leila Motamedzadeh
- Reproductive Biology Department, Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mehrdad Soleimani
- Reproductive Biology Department, Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Fatemeh Sadeghian-Nodoushan
- Advanced Medical Sciences and Technologies Department, Medical Nanotechnology & Tissue Engineering Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Ali Reza Talebi
- Andrology Department, Research and Clinical Center for Infertility, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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Kasapi E, Asimakopoulos B, Chatzimeletiou K, Petousis S, Panagiotidis Y, Prapas N, Nikolettos N. Vitrification of Human Germinal Vesicle Oocytes: before or after In Vitro Maturation? INTERNATIONAL JOURNAL OF FERTILITY & STERILITY 2017; 11:85-92. [PMID: 28670425 PMCID: PMC5347455 DOI: 10.22074/ijfs.2017.4717] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 10/01/2016] [Indexed: 12/05/2022]
Abstract
BACKGROUND The use of immature oocytes derived from stimulated cycles could be of great importance, particularly for urgent fertility preservation cases. The current study aimed to determine whether in vitro maturation (IVM) was more successful before or after vitrification of these oocytes. MATERIALS AND METHODS This prospective study was performed in a private in vitro fertilization (IVF) center. We collected 318 germinal vesicle (GV) oocytes from 104 stimulated oocyte donation cycles. Oocytes were divided into two groups according to whether vitrification was applied at the GV stage (group 1) or in vitro matured to the metaphase II (MII) stage and then vitrified (group 2). In the control group (group 3), oocytes were in vitro matured without vitrification. In all three groups, we assessed survival rate after warming, maturation rate, and MII-spindle/chromosome configurations. The chi-square test was used to compare rates between the three groups. Statistical significance was defined at P<0.05 and we used Bonferroni criterion to assess statistical significance regarding the various pairs of groups. The Statistical Package for the Social Sciences version 17.0 was used to perform statistical analysis. RESULTS There was no significant difference in the survival rate after vitrification and warming of GV (93.5%) and MII oocytes (90.8%). A significantly higher maturation rate occurred when IVM was performed before vitrification (82.9%) compared to after vitrification (51%). There was no significant difference in the incidence of normal spindle/ chromosome configurations among warmed oocytes matured in vitro before (50.0%) or after (41.2%) vitrification. However, a higher incidence of normal spindle/chromosome configurations existed in the in vitro matured oocytes which were not subjected to vitrification (fresh oocytes, 77.9%). CONCLUSION In stimulated cycles, vitrification of in vitro matured MII oocytes rather than GV oocytes seems to be more efficient. This approach needs to be verified in nonstimulated fertility preservation cases.
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Affiliation(s)
- Evangelia Kasapi
- Iakentro Fertility Centre, IVF Laboratory, Thessaloniki, Greece
- Democritus University of Thrace, Laboratory of Physiology, Faculty of Medicine, School of Health Sciences,
Alexandroupolis, Greece
| | - Byron Asimakopoulos
- Democritus University of Thrace, Laboratory of Physiology, Faculty of Medicine, School of Health Sciences,
Alexandroupolis, Greece
| | - Katerina Chatzimeletiou
- Aristotle University of Thessaloniki, Medical School, 1st
Department of Obstetrics and Gynaecology,
Papageorgiou General Hospital, Thessaloniki, Greece
| | | | | | - Nikos Prapas
- Iakentro Fertility Centre, IVF Laboratory, Thessaloniki, Greece
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Shirasawa H, Terada Y. In vitro maturation of human immature oocytes for fertility preservation and research material. Reprod Med Biol 2017; 16:258-267. [PMID: 29259476 PMCID: PMC5715881 DOI: 10.1002/rmb2.12042] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 05/22/2017] [Indexed: 01/10/2023] Open
Abstract
Aim In recent years, the importance of fertility preservation (FP) has increased. In vitro maturation (IVM), an important technique in FP, has started to be used in the clinic, but controversies persist regarding this technique. Here, a survey of IVM for FP is provided. Methods Based on a literature review, the applications of FP, methods of FP, IVM of oocytes that had been collected in vivo and ex vivo, maturation of oocytes after IVM for FP, cryopreservation of oocytes for FP, explanation of the procedures to patients, and recent research on FP using IVM were investigated. Results Although IVM for FP remains controversial, the application of FP is expected to expand. Depending on the age and disease status of the patient, various methods of oocyte collection and ovarian stimulation, as well as various needle types and aspiration pressures, have been reported. The maturation rate of IVM in FP ranges widely and requires optimization in the future. In regard to cryopreservation for matured oocytes, the vitrification method is currently recommended. Conclusion Regarding FP for patients with cancer, the treatment of cancer is prioritized; thus, the time and use of medicines are often constrained. As several key points regarding IVM remain unclear, well‐designed and specific counseling for patients is necessary.
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Affiliation(s)
- Hiromitsu Shirasawa
- Department of Obstetrics and Gynecology Akita University Graduate School of Medicine Akita Japan
| | - Yukihiro Terada
- Department of Obstetrics and Gynecology Akita University Graduate School of Medicine Akita Japan
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The correlation of cumulus mucification patterns with oocyte maturation rate in vitro in FSH + LH-primed IVM cycles: a prospective study. Arch Gynecol Obstet 2015; 293:681-6. [PMID: 26525695 DOI: 10.1007/s00404-015-3935-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 10/21/2015] [Indexed: 10/22/2022]
Abstract
PURPOSE This prospective study was conducted to compare the oocyte maturation rate in vitro among four types of cumulus cell (CC) morphology, in dual gonadotropin-primed in vitro maturation (IVM) oocyte cycles. METHODS Two-hundred and thirty cumulus-oocyte complexes (COCs) were retrieved from FSH + hCG-primed in vitro maturation cycles of 20 patients diagnosed with polycystic ovarian syndrome. The COCs that contained immature oocytes were classified into four groups according to their cumulus mucification patterns (dispersed, clumped, compacted or sparse) and their oocyte maturation rates were compared. Chi square test and Fisher's exact test were used as appropriate. RESULTS Oocytes enclosed by dispersed and clumped CCs exhibited higher maturation rates than those with compacted and sparse patterns (P < 0.001). CONCLUSION In dual gonadotropin-primed IVM cycles, oocyte maturation rates are highest in those showing dispersed and clumped CC patterns.
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10
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Altmäe S. New insights into the complex disease of PCOS: findings from early trophoblast invasion and placentation. Reprod Biomed Online 2014; 29:271-2. [PMID: 25189520 DOI: 10.1016/j.rbmo.2014.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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11
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Zhou HX, Ma YZ, Liu YL, Chen Y, Zhou CJ, Wu SN, Shen JP, Liang CG. Assessment of mouse germinal vesicle stage oocyte quality by evaluating the cumulus layer, zona pellucida, and perivitelline space. PLoS One 2014; 9:e105812. [PMID: 25144310 PMCID: PMC4140848 DOI: 10.1371/journal.pone.0105812] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2014] [Accepted: 07/23/2014] [Indexed: 12/14/2022] Open
Abstract
To improve the outcome of assisted reproductive technology (ART) for patients with ovulation problems, it is necessary to retrieve and select germinal vesicle (GV) stage oocytes with high developmental potential. Oocytes with high developmental potential are characterized by their ability to undergo proper maturation, fertilization, and embryo development. In this study, we analyzed morphological traits of GV stage mouse oocytes, including cumulus cell layer thickness, zona pellucida thickness, and perivitelline space width. Then, we assessed the corresponding developmental potential of each of these oocytes and found that it varies across the range measured for each morphological trait. Furthermore, by manipulating these morphological traits invitro, we were able to determine the influence of morphological variation on oocyte developmental potential. Manually altering the thickness of the cumulus layer showed strong effects on the fertilization and embryo development potentials of oocytes, whereas manipulation of zona pellucida thickness effected the oocyte maturation potential. Our results provide a systematic detailed method for selecting GV stage oocytes based on a morphological assessment approach that would benefit for several downstream ART applications.
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Affiliation(s)
- Hong-Xia Zhou
- The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, Inner Mongolia University, Hohhot, Inner Mongolia, People’s Republic of China
| | - Yu-Zhen Ma
- Inner Mongolia People’s Hospital, Hohhot, Inner Mongolia, People’s Republic of China
| | - Ying-Lei Liu
- The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, Inner Mongolia University, Hohhot, Inner Mongolia, People’s Republic of China
| | - Ying Chen
- The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, Inner Mongolia University, Hohhot, Inner Mongolia, People’s Republic of China
| | - Cheng-Jie Zhou
- The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, Inner Mongolia University, Hohhot, Inner Mongolia, People’s Republic of China
| | - Sha-Na Wu
- The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, Inner Mongolia University, Hohhot, Inner Mongolia, People’s Republic of China
| | - Jiang-Peng Shen
- The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, Inner Mongolia University, Hohhot, Inner Mongolia, People’s Republic of China
| | - Cheng-Guang Liang
- The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, Inner Mongolia University, Hohhot, Inner Mongolia, People’s Republic of China
- * E-mail:
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Field SL, Dasgupta T, Cummings M, Orsi NM. Cytokines in ovarian folliculogenesis, oocyte maturation and luteinisation. Mol Reprod Dev 2013; 81:284-314. [DOI: 10.1002/mrd.22285] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 11/18/2013] [Indexed: 01/22/2023]
Affiliation(s)
- Sarah L Field
- Women's Health Research Group; Leeds Institute of Cancer; Anatomy and Pathology; Wellcome Trust Brenner Building; St James's University Hospital; Leeds UK
| | - Tathagata Dasgupta
- Department of Systems Biology; Harvard Medical School; 200 Longwood Avenue Boston Massachusetts
| | - Michele Cummings
- Women's Health Research Group; Leeds Institute of Cancer; Anatomy and Pathology; Wellcome Trust Brenner Building; St James's University Hospital; Leeds UK
| | - Nicolas M. Orsi
- Women's Health Research Group; Leeds Institute of Cancer; Anatomy and Pathology; Wellcome Trust Brenner Building; St James's University Hospital; Leeds UK
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Zhao KK, Cui YG, Jiang YQ, Wang J, Li M, Zhang Y, Ma X, Diao FY, Liu JY. Effect of HSP10 on apoptosis induced by testosterone in cultured mouse ovarian granulosa cells. Eur J Obstet Gynecol Reprod Biol 2013; 171:301-6. [DOI: 10.1016/j.ejogrb.2013.09.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2013] [Revised: 07/12/2013] [Accepted: 09/22/2013] [Indexed: 02/04/2023]
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Warzych E, Cieslak A, Madeja ZE, Pawlak P, Wolc A, Lechniak D. Multifactorial analysis of the follicular environment is predictive of oocyte morphology in cattle. J Reprod Dev 2013; 60:1-8. [PMID: 24256920 PMCID: PMC3963297 DOI: 10.1262/jrd.2013-086] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Numerous attempts have been recently made in the search for a reliable, fast and
noninvasive assay for selection of oocytes suitable for in vitro embryo
production. Potential markers have been described in the follicle such as follicular fluid
(FF) or cumulus cells (CCs). However, the reported findings are contradictory, which may
reflect the complexity of metabolism of the ovarian follicle. In the present experiment, a
data set from individual follicles of known diameter was obtained: cumulus-oocyte complex
(COC) morphology, fatty acid composition and glucose concentration in FF as well as
apoptotic index in CCs. The obtained data was statistically analyzed either separately
(univariate analysis) or simultaneously (multivariate analysis) to examine its predictive
value in morphology assessment of bovine COCs. Although the univariate analysis yielded a
complex relation system of the selected parameters, no clear outcome could be established.
In multivariate analysis, the concentration of the four fatty acids (C16:0, C16:1,
C18:1cis9, C22:5n3) and Δ9-desaturase (16) as well as elongase activities were
selected as covariates. This allowed prediction of the morphology of a COC with an
accuracy of 72%, which is the most interesting finding of the experiment. The present
study indicates that the multifactorial model comprising of selected parameters related to
the follicle appeared more effective in predicting the morphology of a bovine COC, which
may improve the effectiveness of in vitro production systems.
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Affiliation(s)
- Ewelina Warzych
- Department of Genetics and Animal Breeding, Poznan University of Life Sciences, 60-637 Poznan, Poland
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Siristatidis CS, Vrachnis N, Creatsa M, Maheshwari A, Bhattacharya S. In vitro maturation in subfertile women with polycystic ovarian syndrome undergoing assisted reproduction. Cochrane Database Syst Rev 2013:CD006606. [PMID: 24101529 DOI: 10.1002/14651858.cd006606.pub3] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND Polycystic ovarian syndrome (PCOS) occurs in 4% to 7% of all women of reproductive age and 50% of women presenting with subfertility. Subfertility affects 15% to 20% of couples trying to conceive. A significant proportion of these women ultimately need assisted reproductive technology (ART). In vitro fertilisation (IVF) is one of the assisted reproduction techniques employed to raise the chances of achieving a pregnancy. For the standard IVF technique, stimulating follicle development and growth before oocyte retrieval is essential, for which a large number of different methods combining gonadotrophins with a gonadotrophin-releasing hormone (GnRH) agonist or antagonist are used. In women with PCOS, the supra-physiological doses of gonadotrophins used for controlled ovarian hyperstimulation (COH) often result in an exaggerated ovarian response, characterised by the development of a large cohort of follicles of uneven quality, retrieval of immature oocytes, and increased risk of ovarian hyperstimulation syndrome. A potentially effective intervention for women with PCOS-related subfertility involves earlier retrieval of immature oocytes at the germinal-vesicle stage followed by in vitro maturation (IVM). So far, the only data available have derived from observational studies and non-randomised clinical trials. OBJECTIVES To compare outcomes associated with in vitro maturation (IVM) followed by vitro fertilisation (IVF) or intracytoplasmic sperm injection (ICSI) versus conventional IVF or ICSI, among women with polycystic ovarian syndrome (PCOS) undergoing assisted reproductive technologies (ART). SEARCH METHODS We searched the Menstrual Disorders and Subfertility Group (MDSG) Specialised Register of controlled trials to May 2013 for any relevant trials identified from the title, abstract, or keyword sections. This was followed by a search of the electronic database MEDLINE, EMBASE, LILACS and CINAHL, without language restriction. We also performed a manual search of the references of all retrieved articles; sought unpublished papers and abstracts submitted to international conferences, searched the clinicaltrials.gov and WHO portal registries for submitted protocols of clinical trials, and contacted experts. In addition, we examined the National Institute of Clinical Excellence (NICE) fertility assessment and treatment guidelines and handsearched reference lists of relevant articles (from 1970 to May 2013). SELECTION CRITERIA All randomised trials (RCTs) on the intention to perform IVM before IVF or ICSI compared with conventional IVF or ICSI for subfertile women with PCOS. DATA COLLECTION AND ANALYSIS Three review authors (CS, MK and NV) independently assessed eligibility and quality of trials. Primary outcome measure was live birth rate per randomised woman. MAIN RESULTS There were no RCTs suitable for inclusion in the review, although there are currently three ongoing trials that have not yet reported results. AUTHORS' CONCLUSIONS Though promising data on the IVM technique have been published, unfortunately there is still no evidence from RCTs upon which to base any practice recommendations regarding IVM before IVF or ICSI for women with PCOS. Meanwhile, the results of the above-mentioned ongoing trials are awaited and, of course, further evidence from good quality trials in the field is eagerly anticipated.
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Affiliation(s)
- Charalampos S Siristatidis
- Assisted Reproduction Unit, 3rd Department of Obstetrics and Gynaecology, University of Athens, Attikon University Hospital,, Rimini 1, Athens, Chaidari, Greece, 12462
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16
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Warzych E, Pers-Kamczyc E, Krzywak A, Dudzińska S, Lechniak D. Apoptotic index within cumulus cells is a questionable marker of meiotic competence of bovine oocytes matured in vitro. Reprod Biol 2013; 13:82-7. [DOI: 10.1016/j.repbio.2013.01.180] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2012] [Accepted: 10/17/2012] [Indexed: 11/29/2022]
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17
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Palomba S, Russo T, Falbo A, Di Cello A, Amendola G, Mazza R, Tolino A, Zullo F, Tucci L, La Sala GB. Decidual endovascular trophoblast invasion in women with polycystic ovary syndrome: an experimental case-control study. J Clin Endocrinol Metab 2012; 97:2441-9. [PMID: 22508703 DOI: 10.1210/jc.2012-1100] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
CONTEXT Previous experimental and clinical data suggest impaired decidual trophoblast invasion in patients with polycystic ovarian syndrome (PCOS). OBJECTIVE The objective of the study was to test the hypothesis that decidual endovascular trophoblast invasion in pregnant patients with PCOS is impaired and to clarify the potential mechanisms involved. DESIGN This was an experimental case-control study. SETTING The study was conducted at the academic Departments of Obstetrics and Gynecology and the Unit of Pathology (Italy). PATIENTS Forty-five pregnant subjects screened from a wide population of women waiting for legal pregnancy termination were included in the final analysis. Specifically, 15 pregnant patients with PCOS were enrolled as cases and another 30 age- and body mass index (BMI)-matched healthy pregnant women without any feature of PCOS were enrolled as the controls. INTERVENTION Interventions included the collection of trophoblastic and decidual tissue at the 12th week of gestation. MAIN OUTCOME MEASURES Clinical, ultrasonographic, and biochemical data as well as the histological analysis of decidual endovascular trophoblast invasion. RESULTS The rate of implantation site vessels with endovascular trophoblast invasion (ratio between total number of implantation site vessels and total number of vessels with endovascular trophoblast invasion) and the extent of endovascular trophoblast invasion (proportion between immunoreactive areas to cytokeratin 7 and to CD34) were significantly lower in patients with PCOS compared with healthy non-PCOS controls. Endovascular trophoblast invasion data were significantly and indirectly related to the markers of insulin resistance and testosterone concentrations in PCOS patients. CONCLUSIONS Pregnant patients with PCOS patients have impaired decidual trophoblast invasion. Further studies are needed to evaluate the exact mechanisms through which insulin resistance and hyperandrogenemia exert this effect.
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Affiliation(s)
- Stefano Palomba
- Obstetrics and Gynecology Unit, Department of Obstetrics, Gynecology and Pediatrics, Azienda Ospedaliera Arcispedale Santa Maria Nuova, Istituto di Ricovero e Cura a Carattere Scientifico, University of Modena and Reggio Emilia, Viale Risorgimento, 42123 Reggio Emilia, Italy.
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Li M, Li Y, Ma SY, Feng HL, Yang HJ, Wu KL, Zhong WX, Che L, Chen ZJ. Evaluation of the developmental potential of metaphase I oocytes from stimulated intracytoplasmic sperm injection cycles. Reprod Fertil Dev 2011; 23:433-7. [DOI: 10.1071/rd10228] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2010] [Accepted: 10/13/2010] [Indexed: 11/23/2022] Open
Abstract
The objective of the present study was to evaluate the developmental potential and clinical application value of metaphase I (MI) oocytes obtained from stimulated intracytoplasmic sperm injection (ICSI) cycles. ICSI was performed on MI oocytes immediately after denudation (Group A), or on in vitro-matured (IVM) oocytes following culture; oocytes in culture were further divided into two groups, being cultured for either 3–5 h (Group B) or 24–28 h (Group C). Metaphase II oocytes from the same cycle(s) isolated for ICSI served as the control group (Group D). The rates of normal fertilisation, cleavage and high-quality embryos were compared among the four groups. High-quality embryos were transferred whenever possible, and pregnancy rates were evaluated. Results showed that normal fertilisation rates for Groups B, C and D were significantly higher than that of Group A (68.6%, 57.8%, 74.5% and 30.1%, respectively; P < 0.01). The rate of high-quality embryos in Group B was comparable with Group D; the rate for Group C was significantly lower than that of the other groups (P < 0.05). Two clinical pregnancies were achieved after transfer of embryos from IVM oocytes. In vitro maturation of MI oocytes for a short period of time may increase the number of available embryos; however, overnight in vitro culture of MI oocytes did not improve results.
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Peluffo MC, Barrett SL, Stouffer RL, Hennebold JD, Zelinski MB. Cumulus-oocyte complexes from small antral follicles during the early follicular phase of menstrual cycles in rhesus monkeys yield oocytes that reinitiate meiosis and fertilize in vitro. Biol Reprod 2010; 83:525-32. [PMID: 20519694 DOI: 10.1095/biolreprod.110.084418] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
The stage at which follicle-enclosed cumulus-oocyte complexes achieve developmental competence in primates is unknown. Therefore, studies were designed to characterize the ability of oocytes in small antral follicles present during the menstrual cycle to spontaneously resume meiosis, fertilize, and support early embryo development. Ovaries were removed from adult rhesus monkeys (n = 12) during the early follicular phase (Days 3-4) of spontaneous cycles. Small antral follicles were divided into five groups according to their diameter; group I: <0.5 mm; group II: 0.5-0.99 mm; group III: 1.0-1.49 mm; group IV: 1.5-1.99 mm; and group V: 2.0-2.5 mm. The cumulus-oocyte complex from healthy small antral follicles (devoid of dark oocytes or granulosa cells) were extracted (n = 199) and cultured for 48 h under different conditions: in TALP (tyrode, albumin, lactate, pyruvate) medium alone, SAGE medium alone, or plus gonadotropins. At 48 h, oocyte meiotic status and diameter were measured after treatment of cumulus-oocyte complexes with hyaluronidase. Cumulus-oocyte complexes derived from follicles of 0.5- to 2-mm diameter contain oocytes that typically reinitiate meiosis in the absence or presence of gonadotropins and fertilize via in vitro fertilization or intracytoplasmic sperm injection. Moreover, the inseminated oocytes can reach the morula stage but arrest. Thus, the ability of these oocytes to complete maturation, as monitored from subsequent embryonic development after fertilization, is suboptimal. Further studies on primate IVM of oocytes from SAFs are warranted in order for them to be considered as an additional, novel source of gametes for fertility preservation in cancer patients.
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Affiliation(s)
- Marina C Peluffo
- Division of Reproductive Sciences, Oregon National Primate Research Center, Beaverton, Oregon, USA
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Siristatidis CS, Maheshwari A, Bhattacharya S. In vitro maturation in sub fertile women with polycystic ovarian syndrome undergoing assisted reproduction. Cochrane Database Syst Rev 2009:CD006606. [PMID: 19160291 DOI: 10.1002/14651858.cd006606.pub2] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Polycystic ovarian syndrome (PCOS) occurs in 4% to 7% of all women of reproductive age and 20% of women presenting with sub-fertility. A significant proportion of these women will ultimately need assisted reproductive techniques (ART). In women with PCOS, the supra-physiological doses of gonadotrophins used for controlled ovarian hyperstimulation (COH) often result in an exaggerated ovarian response characterised by the development of a large cohort of follicles of uneven quality, retrieval of immature oocytes, and increased risk of ovarian hyperstimulation syndrome. A potentially useful intervention for women with PCOS-related infertility involves earlier retrieval of immature oocytes followed by in vitro maturation (IVM). OBJECTIVES To compare live birth rates per woman following in vitro maturation (IVM) with conventional in vitro fertilisation (IVF) or intracytoplasmic sperm injection (ICSI) for women with PCOS undergoing ART. SEARCH STRATEGY We searched the Menstrual Disorders and Subfertility Group Specialised Register of controlled trials for any relevant trials from the title, abstract, or keyword sections. Following a search of electronic databases (MEDLINE in all languages) using Ovid software we also performed a manual search of the references of all retrieved articles, sought unpublished papers and abstracts submitted to international conferences, and contacted experts. In addition, we searched the National Institute of Clinical Excellence fertility assessment and treatment guidelines (NICE 2004) and handsearched reference lists of relevant systematic reviews and randomised trials. SELECTION CRITERIA All randomised trials on the intention to perform IVM before IVF or ICSI and conventional IVF or ICSI for sub-fertile women with PCOS. DATA COLLECTION AND ANALYSIS We identified no studies that met the inclusion criteria. MAIN RESULTS There were no trials suitable for inclusion in the review. AUTHORS' CONCLUSIONS There are no randomised controlled trials upon which to base any practice recommendations regarding IVM before IVF or ICSI for women with PCOS. There is an urgent need for randomised trials in this field.
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Affiliation(s)
- Charalambos S Siristatidis
- Department of Obstetrics & Gynaecology, University of Aberdeen, Assisted Reproduction Unit, Aberdeen Maternity Hospital, Forest Hill, Aberdeen, UK, AB25 2ZD.
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