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Jiao A, Sun J, Sun Z, Zhao Y, Han T, Zhang H, Gao Q. Effects of limonin on oxidative stress and early apoptosis in oocytes during in vitro maturation. Theriogenology 2024; 218:8-15. [PMID: 38290232 DOI: 10.1016/j.theriogenology.2024.01.025] [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: 10/28/2023] [Revised: 01/23/2024] [Accepted: 01/24/2024] [Indexed: 02/01/2024]
Abstract
To investigate the effects of limonin (Lim) on oxidative stress and early apoptosis in bovine oocytes during in vitro maturation (IVM), different concentrations of Lim (0, 10, 20, 50 μmol/L) were added to bovine IVM medium. Oocyte maturation rates and development 24 h after in vitro fertilization (IVF) were examined to determine the optimal Lim concentration. The optimal Lim concentration was added to the IVM medium, and 0 μmol/L Lim was used as the control. Immunofluorescence staining was used to detect the abnormal rate of spindle assembly, reactive oxygen species (ROS), glutathione (GSH), mitochondrial membrane potential (MMP) levels, mitochondrial distribution, and the fluorescence intensity of cathepsin B (CB)-active LC3 protein. RT‒qPCR was used to detect the mRNA expression levels of antioxidant-, apoptosis- and autophagy-related genes in oocytes. The total number of blastocysts and the proportion of apoptotic cells among blastocysts were detected. The results showed that the PBI ejection rate, cleavage rate and blastocyst rate of bovine oocytes in the 20 μmol/L Lim group were significantly higher than those in the control group (P < 0.05). Compared with those in the control group, ROS levels, abnormal mitochondrial distribution, the proportion of abnormal spindle assembly, CB activity and LC3 protein fluorescence intensity of oocytes in the 20 μmol/L Lim group were significantly decreased (P < 0.05), and GSH and MMP levels were significantly increased (P < 0.05). The expression of antioxidant genes (Prdx3, Prdx6, Sirt1) and antiapoptotic genes (Bcl-xl, Survivin) were significantly upregulated (P < 0.05), and the expression levels of proapoptotic genes (Caspase-4, BAX) and autophagy-related genes (LC3) were significantly downregulated (P < 0.05). The total number of cells among in vitro fertilized embryos was significantly increased (P < 0.05), and the apoptosis rate of blastocysts was significantly decreased (P < 0.05). Here, we show that Lim exerts positive effects on bovine oocyte IVM by regulating REDOX homeostasis, reducing spindle damage and enhancing mitochondrial function during IVM, thereby inhibiting oocyte apoptosis and autophagy.
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Affiliation(s)
- Anhui Jiao
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China; College of Agriculture, Yanbian University, Yanji, 133002, China; Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, Yanji, 133002, China
| | - Jingyu Sun
- Tianjin Limu Biotechnology Co., LTD., Tianjin, 300456, China
| | - Zhaoyang Sun
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China; College of Agriculture, Yanbian University, Yanji, 133002, China; Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, Yanji, 133002, China
| | - Yuhan Zhao
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China; College of Agriculture, Yanbian University, Yanji, 133002, China; Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, Yanji, 133002, China
| | - Tiancang Han
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China; College of Agriculture, Yanbian University, Yanji, 133002, China; Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, Yanji, 133002, China
| | - Hongbo Zhang
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China; College of Agriculture, Yanbian University, Yanji, 133002, China; Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, Yanji, 133002, China
| | - Qingshan Gao
- Engineering Research Center of North-East Cold Region Beef Cattle Science & Technology Innovation, Ministry of Education, Yanbian University, Yanji, 133002, China; College of Agriculture, Yanbian University, Yanji, 133002, China; Jilin Engineering Research Center of Yanbian Yellow Cattle Resources Reservation, Yanji, 133002, China.
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Lim ES, Lee SE, Park MJ, Han DH, Lee HB, Ryu B, Kim EY, Park SP. Piperine improves the quality of porcine oocytes by reducing oxidative stress. Free Radic Biol Med 2024; 213:1-10. [PMID: 38159890 DOI: 10.1016/j.freeradbiomed.2023.12.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 12/08/2023] [Accepted: 12/27/2023] [Indexed: 01/03/2024]
Abstract
Oxidative stress caused by light and high temperature arises during in vitro maturation (IVM), resulting in low-quality embryos compared with those obtained in vivo. To overcome this problem, we investigated the influence of piperine (PIP) treatment during maturation of porcine oocytes on subsequent embryo development in vitro. Porcine oocytes were cultured in IVM medium supplemented with 0, 50, 100, 200, or 400 μM PIP. After parthenogenetic activation, the blastocyst (BL) formation was significantly higher and the apoptosis rate was significantly lower using 200 μM PIP-treated oocytes (200 PIP). In the 200 PIP group, the level of reactive oxygen species at the metaphase II stage was decreased, accompanied by an increased level of glutathione and increased expression of antioxidant processes (Nrf2, CAT, HO-1, SOD1, and SOD2). Consistently, chromosome misalignment and aberrant spindle organization were alleviated and phosphorylated p44/42 mitogen-activated protein kinase activity was increased in the 200 PIP group. Expression of development-related (CDX2, NANOG, POU5F1, and SOX2), anti-apoptotic (BCL2L1 and BIRC5), and pro-apoptotic (BAK, FAS, and CASP3) processes was altered in the 200 PIP group. Ultimately, embryo development was improved in the 200 PIP group following somatic cell nuclear transfer. These findings suggest that PIP improves the quality of porcine oocytes by reducing oxidative stress, which inevitably arises via IVM. In-depth mechanistic studies of porcine oocytes will improve the efficiencies of assisted reproductive technologies.
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Affiliation(s)
- Eun-Seo Lim
- Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, 102 Jejudaehak-ro, Jeju, Jeju Special Self-Governing Province, 63243, South Korea; Stem Cell Research Center, Jeju National University, 102 Jejudaehak-ro, Jeju, Jeju Special Self-Governing Province, 63243, South Korea
| | - Seung-Eun Lee
- Department of Bio Medical Informatics, College of Applied Life Sciences, Jeju National University, 102 Jejudaehak-ro, Jeju, Jeju Special Self-Governing Province, 63243, South Korea; Cronex Co., 110 Hwangtalli-gil, Gangnae-myeon, Heungdeok-gu, Cheongju-si, Chungcheongbuk-do, 28174, South Korea
| | - Min-Jee Park
- Stem Cell Research Center, Jeju National University, 102 Jejudaehak-ro, Jeju, Jeju Special Self-Governing Province, 63243, South Korea
| | - Dong-Hun Han
- Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, 102 Jejudaehak-ro, Jeju, Jeju Special Self-Governing Province, 63243, South Korea; Stem Cell Research Center, Jeju National University, 102 Jejudaehak-ro, Jeju, Jeju Special Self-Governing Province, 63243, South Korea
| | - Han-Bi Lee
- Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, 102 Jejudaehak-ro, Jeju, Jeju Special Self-Governing Province, 63243, South Korea; Stem Cell Research Center, Jeju National University, 102 Jejudaehak-ro, Jeju, Jeju Special Self-Governing Province, 63243, South Korea
| | - Bokyeong Ryu
- Stem Cell Research Center, Jeju National University, 102 Jejudaehak-ro, Jeju, Jeju Special Self-Governing Province, 63243, South Korea; Department of Bio Medical Informatics, College of Applied Life Sciences, Jeju National University, 102 Jejudaehak-ro, Jeju, Jeju Special Self-Governing Province, 63243, South Korea
| | - Eun-Young Kim
- Faculty of Biotechnology, College of Applied Life Sciences, Jeju National University, 102 Jejudaehak-ro, Jeju, Jeju Special Self-Governing Province, 63243, South Korea; Stem Cell Research Center, Jeju National University, 102 Jejudaehak-ro, Jeju, Jeju Special Self-Governing Province, 63243, South Korea; Mirae Cell Bio, 1502 isbiz-tower 147, Seongsui-ro, Seongdong-gu, Seoul, 04795, South Korea
| | - Se-Pill Park
- Stem Cell Research Center, Jeju National University, 102 Jejudaehak-ro, Jeju, Jeju Special Self-Governing Province, 63243, South Korea; Department of Bio Medical Informatics, College of Applied Life Sciences, Jeju National University, 102 Jejudaehak-ro, Jeju, Jeju Special Self-Governing Province, 63243, South Korea; Mirae Cell Bio, 1502 isbiz-tower 147, Seongsui-ro, Seongdong-gu, Seoul, 04795, South Korea.
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3
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Lin N, van Zomeren K, van Veen T, Mzyk A, Zhang Y, Zhou X, Plosch T, Tietge UJF, Cantineau A, Hoek A, Schirhagl R. Quantum Sensing of Free Radicals in Primary Human Granulosa Cells with Nanoscale Resolution. ACS CENTRAL SCIENCE 2023; 9:1784-1798. [PMID: 37780363 PMCID: PMC10540281 DOI: 10.1021/acscentsci.3c00747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Indexed: 10/03/2023]
Abstract
Cumulus granulosa cells (cGCs) and mural granulosa cells (mGCs), although derived from the same precursors, are anatomically and functionally heterogeneous. They are critical for female fertility by supporting oocyte competence and follicular development. There are various techniques used to investigate the role of free radicals in mGCs and cCGs. Yet, temporospatial resolution remains a challenge. We used a quantum sensing approach to study free radical generation at nanoscale in cGCs and mGCs isolated from women undergoing oocyte retrieval during in vitro fertilization (IVF). Cells were incubated with bare fluorescent nanodiamonds (FNDs) or mitochondria targeted FNDs to detect free radicals in the cytoplasm and mitochondria. After inducing oxidative stress with menadione, we continued to detect free radical generation for 30 min. We observed an increase in free radical generation in cGCs and mGCs from 10 min on. Although cytoplasmic and mitochondrial free radical levels are indistinguishable in the physiological state in both cGCs and mGCs, the free radical changes measured in mitochondria were significantly larger in both cell types, suggesting mitochondria are sites of free radical generation. Furthermore, we observed later occurrence and a smaller percentage of cytoplasmic free radical change in cGCs, indicating that cGCs may be more resistant to oxidative stress.
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Affiliation(s)
- Nuan Lin
- Department
of Obstetrics and Gynecology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
- Department
of Obstetrics and Gynecology, The First
Affiliated Hospital of Shantou University Medical College, 515041 Shantou, China
| | - Koen van Zomeren
- Department
of Obstetrics and Gynecology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Teelkien van Veen
- Department
of Obstetrics and Gynecology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Aldona Mzyk
- Department
of Biomedical Engineering, Groningen University,
University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AW Groningen, The Netherlands
- Institute
of Metallurgy and Materials Science, Polish
Academy of Sciences, Reymonta 25, 30-059 Krakow, Poland
| | - Yue Zhang
- Department
of Biomedical Engineering, Groningen University,
University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AW Groningen, The Netherlands
| | - Xiaoling Zhou
- Center
for Reproductive Medicine, Shantou University
Medical College, Shantou 515041, China
| | - Torsten Plosch
- Department
of Obstetrics and Gynecology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Uwe J. F. Tietge
- Division
of Clinical Chemistry, Department of Laboratory Medicine, Karolinska Institute, SE-141 52 Stockholm, Sweden
- Clinical
Chemistry, Karolinska University Laboratory, Karolinska University Hospital, Stockholm, SE-141 86 Stockholm, Sweden
| | - Astrid Cantineau
- Department
of Obstetrics and Gynecology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Annemieke Hoek
- Department
of Obstetrics and Gynecology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands
| | - Romana Schirhagl
- Department
of Biomedical Engineering, Groningen University,
University Medical Center Groningen, Antonius Deusinglaan 1, 9713 AW Groningen, The Netherlands
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Wang J, Wang XQ, Liu RP, Li YH, Yao XR, Kim NH, Xu YN. Melatonin Supplementation during In Vitro Maturation of Porcine Oocytes Alleviates Oxidative Stress and Endoplasmic Reticulum Stress Induced by Imidacloprid Exposure. Animals (Basel) 2023; 13:2596. [PMID: 37627386 PMCID: PMC10451172 DOI: 10.3390/ani13162596] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 08/04/2023] [Accepted: 08/04/2023] [Indexed: 08/27/2023] Open
Abstract
Imidacloprid (IMI) is an endogenous neonicotinoid insecticide widely used in agriculture and has attracted researchers' attention because of its risks to the environment and human health. Melatonin (MT) is an antioxidant hormone produced by the pineal gland of the brain. Studies have shown that it has a variety of physiological functions and plays a crucial role in the development of animal germ cells and embryos. The potential protective effects of MT against oocyte damage caused by neonicotinoid pesticide toxicity remain unclear. In this study, we report the toxicity of IMI against, and its effects on the quality of, porcine oocytes and the protective effect of MT on IMI-exposed oocytes. The results show that IMI exposure adversely affected oocyte maturation, while MT supplementation ameliorated its toxic effects. Specifically, IMI exposure increased oxidative stress (OS), endoplasmic reticulum stress (ERS), and apoptosis, which may affect polar body expulsion rates and blastocyst formation. Also, IMI exposure reduced oocyte cleavage rates and the number of cells in blastocysts. However, all of these toxic effects can be restored after a melatonin supplementation treatment. In conclusion, these results suggest that melatonin has a protective effect on IMI-induced defects during porcine oocyte maturation.
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Affiliation(s)
- Jing Wang
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China (Y.-H.L.)
- College of Agriculture, Yanbian University, Yanji 133002, China
| | - Xin-Qin Wang
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China (Y.-H.L.)
| | - Rong-Ping Liu
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China (Y.-H.L.)
| | - Ying-Hua Li
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China (Y.-H.L.)
| | - Xue-Rui Yao
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China (Y.-H.L.)
| | - Nam-Hyung Kim
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China (Y.-H.L.)
| | - Yong-Nan Xu
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China (Y.-H.L.)
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5
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Picton HM. Therapeutic Potential of In Vitro-Derived Oocytes for the Restoration and Treatment of Female Fertility. Annu Rev Anim Biosci 2022; 10:281-301. [PMID: 34843385 DOI: 10.1146/annurev-animal-020420-030319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Considerable progress has been made with the development of culture systems for the in vitro growth and maturation (IVGM) of oocytes from the earliest-staged primordial follicles and from the more advanced secondary follicles in rodents, ruminants, nonhuman primates, and humans. Successful oocyte production in vitro depends on the development of a dynamic culture strategy that replicates the follicular microenvironment required for oocyte activation and to support oocyte growth and maturation in vivo while enabling the coordinated and timely acquisition of oocyte developmental competence. Significant heterogeneity exists between the culture protocols used for different stages of follicle development and for different species. To date, the fertile potential of IVGM oocytes derived from primordial follicles has been realized only in mice. Although many technical challenges remain, significant advances have been made, and there is an increasing consensus that complete IVGM will require a dynamic, multiphase culture approach. The production of healthy offspring from in vitro-produced oocytes in a secondary large animal species is a vital next step before IVGM can be tested for therapeutic use in humans.
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Affiliation(s)
- Helen M Picton
- Reproduction and Early Development Research Group, Discovery and Translational Science Department, Leeds Institute of Cardiovascular and Metabolic Medicine, School of Medicine, University of Leeds, Leeds, United Kingdom;
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Moghadam ARE, Moghadam MT, Hemadi M, Saki G. Oocyte quality and aging. JBRA Assist Reprod 2022; 26:105-122. [PMID: 34338482 PMCID: PMC8769179 DOI: 10.5935/1518-0557.20210026] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 04/15/2021] [Indexed: 11/20/2022] Open
Abstract
It is well known that female reproduction ability decreases during the forth decade of life due to age-related changes in oocyte quality and quantity; although the number of women trying to conceive has today increased remarkably between the ages of 36 to 44. The causes of reproductive aging and physiological aspects of this phenomenon are still elusive. With increase in the women's age, during Assisted Reproductive Technologies (ART) we have perceived a significant decline in the number and quality of retrieved oocytes, as well as in ovarian follicle reserves. This is because of increased aneuploidy due to factors such as spindle apparatus disruption; oxidative stress and mitochondrial damage. The aim of this review paper is to study data on the potential role of the aging process impacting oocyte quality and female reproductive ability. We present the current evidence that show the decreased oocyte quality with age, related to reductions in female reproductive outcome. The aging process is complicated and it is caused by many factors that control cellular and organism life span. Although the factors responsible for reduced oocyte quality remain unknown, the present review focuses on the potential role of ovarian follicle environment, oocyte structure and its organelles. To find a way to optimize oocyte quality and ameliorate clinical outcomes for women with aging-related causes of infertility.
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Affiliation(s)
- Ali Reza Eftekhari Moghadam
- Cellular & Molecular Research Center, Medical Basic Sciences Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
- Department of Anatomical Science, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mahin Taheri Moghadam
- Department of Anatomical Science, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Masoud Hemadi
- Department of Anatomical Science, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Ghasem Saki
- Department of Anatomical Science, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Guo Y, Chen P, Li T, Jia L, Zhou Y, Huang J, Liang X, Zhou C, Fang C. Single-cell transcriptome and cell-specific network analysis reveal the reparative effect of neurotrophin-4 in preantral follicles grown in vitro. Reprod Biol Endocrinol 2021; 19:133. [PMID: 34481496 PMCID: PMC8417972 DOI: 10.1186/s12958-021-00818-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 08/24/2021] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND In-vitro-grow (IVG) of preantral follicles is essential for female fertility preservation, while practical approach for improvement is far from being explored. Studies have indicated that neurotrophin-4 (NT-4) is preferentially expressed in human preantral follicles and may be crucial to preantral follicle growth. METHODS We observed the location and expression of Tropomyosin-related kinase B (TRKB) in human and mouse ovaries with immunofluorescence and Western blot, and the relation between oocyte maturation and NT-4 level in follicular fluid (FF). Mice model was applied to investigate the effect of NT-4 on preantral follicle IVG. Single-cell RNA sequencing of oocyte combined with cell-specific network analysis was conducted to uncover the underlying mechanism of effect. RESULTS We reported the dynamic location of TRKB in human and mouse ovaries, and a positive relationship between human oocyte maturation and NT-4 level in FF. Improving effect of NT-4 was observed on mice preantral follicle IVG, including follicle development and oocyte maturation. Transcriptome analysis showed that the reparative effect of NT-4 on oocyte maturation might be mediated by regulation of PI3K-Akt signaling and subsequent organization of F-actin. Suppression of advanced stimulated complement system in granulosa cells might contribute to the improvement. Cell-specific network analysis revealed NT-4 may recover the inflammation damage induced by abnormal lipid metabolism in IVG. CONCLUSIONS Our data suggest that NT-4 is involved in ovarian physiology and may improve the efficiency of preantral follicle IVG for fertility preservation.
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Affiliation(s)
- Yingchun Guo
- grid.488525.6Reproductive Medicine Research Center, Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510275 Guangdong China
| | - Peigen Chen
- grid.488525.6Reproductive Medicine Research Center, Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510275 Guangdong China
| | - Tingting Li
- grid.488525.6Reproductive Medicine Research Center, Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510275 Guangdong China
| | - Lei Jia
- grid.488525.6Reproductive Medicine Research Center, Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510275 Guangdong China
| | - Yi Zhou
- grid.488525.6Reproductive Medicine Research Center, Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510275 Guangdong China
| | - Jiana Huang
- grid.488525.6Reproductive Medicine Research Center, Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510275 Guangdong China
| | - Xiaoyan Liang
- grid.488525.6Reproductive Medicine Research Center, Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510275 Guangdong China
| | - Chuanchuan Zhou
- grid.488525.6Reproductive Medicine Research Center, Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510275 Guangdong China
| | - Cong Fang
- grid.488525.6Reproductive Medicine Research Center, Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, 510275 Guangdong China
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8
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Castrec J, Fabioux C, Le Goïc N, Boulais M, Soudant P, Hégaret H. The toxic dinoflagellate Alexandrium minutum affects oyster gamete health and fertilization potential. MARINE ENVIRONMENTAL RESEARCH 2021; 169:105401. [PMID: 34217094 DOI: 10.1016/j.marenvres.2021.105401] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 06/16/2021] [Accepted: 06/18/2021] [Indexed: 06/13/2023]
Abstract
Dinoflagellates from the globally distributed genus Alexandrium are known to produce both paralytic shellfish toxins (PST) and uncharacterized bioactive extracellular compounds (BEC) with allelopathic, ichthyotoxic, hemolytic and cytotoxic activities. In France, blooms of Alexandrium minutum appear generally during the spawning period of most bivalves. These blooms could therefore alter gametes and/or larval development of bivalves, causing severe issues for ecologically and economically important species, such as the Pacific oyster Crassostrea (=Magallana) gigas. The aim of this work was to test the effects of three strains of A. minutum producing either only PST, only BEC, or both PST and BEC upon oyster gametes, and potential consequences on fertilization success. Oocytes and spermatozoa were exposed in vitro for 2 h to a range of environmentally realistic A. minutum concentrations (10-2.5 × 104 cells mL-1). Following exposure, gamete viability and reactive oxygen species (ROS) production were assessed by flow cytometry, spermatozoa motility and fertilization capacities of both spermatozoa and oocytes were analysed by microscopy. Viability and fertilization capacity of spermatozoa and oocytes were drastically reduced following exposure to 2.5 × 104 cells mL-1 of A. minutum. The BEC-producing strain was the most potent strain decreasing spermatozoa motility, increasing ROS production of oocytes, and decreasing fertilization, from the concentration of 2.5 × 103 cells mL-1. This study highlights the significant cellular toxicity of the BEC produced by A. minutum on oyster gametes. Physical contact between gametes and motile thecate A. minutum cells may also contribute to alter oyster gamete integrity. These results suggest that oyster gametes exposure to A. minutum blooms could affect oyster fertility and reproduction success.
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Affiliation(s)
- Justine Castrec
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280 Plouzane, France.
| | | | - Nelly Le Goïc
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280 Plouzane, France
| | - Myrina Boulais
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280 Plouzane, France
| | | | - Hélène Hégaret
- Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280 Plouzane, France
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9
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Magata F, Ideta A, Matsuda F, Urakawa M, Oono Y. Glutathione ethyl ester improved the age-induced decline in the developmental competence of bovine oocytes. Theriogenology 2021; 167:37-43. [PMID: 33744770 DOI: 10.1016/j.theriogenology.2021.03.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 03/02/2021] [Accepted: 03/06/2021] [Indexed: 01/27/2023]
Abstract
The aberrant redox regulation and anti-oxidative defense is one of the main causes of age-induced decline in oocytes quality and embryo development in mammals. The present study aimed to elucidate the effect of glutathione ethyl ester (GSH-OEt), a cell-permeable glutathione (GSH) donor, on the developmental competence of oocytes in cows with advanced reproductive age. Oocytes were collected from cows aged 30-50 months or >120 months, which were defined as young or aged, respectively, and subjected to in vitro maturation (IVM) in the presence of 5 mM of GSH-OEt. In aged cows, the GSH level in follicular fluid was lower, and the intracellular levels of reactive oxygen species (ROS) in post-IVM oocytes was higher than those in young cows. GSH-OEt supplementation during IVM reduced the ROS contents of oocyte in aged cows but not in young cows. GSH-OEt treatment promoted the meiotic progression and increased the proportion of oocytes with mature cytoplasm containing evenly dispersed cortical granules in aged cows. After in vitro fertilization, the normal fertilization and development to the blastocyst stage were enhanced by GSH-OEt in aged cows to levels comparable to those in young cows. Further, oocyte maturation in the presence of GSH-OEt increased the proportion of diploid blastocyst in aged cows. In contrast, GSH-OEt failed to enhance the oocyte maturation, fertilization, and embryo development in young cows. Taken together, the exogenous supplementation of GSH-OEt during IVM modulated the age-related oxidative damage of bovine oocytes and improved the developmental competence of oocytes in aged cows. Oocytes presented a distinct response to GSH-OEt treatment depending on the donor age. GSH-OEt supplementation during IVM could be of practical value through the efficiency improvement of chromosomally normal embryo production in aged cows.
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Affiliation(s)
- F Magata
- Research and Development Group, Zen-noh Embryo Transfer Center, Kamishihoro, Hokkaido, Japan; Department of Veterinary Medical Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan.
| | - A Ideta
- Research and Development Group, Zen-noh Embryo Transfer Center, Kamishihoro, Hokkaido, Japan
| | - F Matsuda
- Department of Veterinary Medical Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - M Urakawa
- Research and Development Group, Zen-noh Embryo Transfer Center, Kamishihoro, Hokkaido, Japan
| | - Y Oono
- Research and Development Group, Zen-noh Embryo Transfer Center, Kamishihoro, Hokkaido, Japan
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10
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Peinado I, Moya I, Sáez-Espinosa P, Barrera M, García-Valverde L, Francés R, Torres P, Gómez-Torres MJ. Impact of Maturation and Vitrification Time of Human GV Oocytes on the Metaphase Plate Configuration. Int J Mol Sci 2021; 22:ijms22031125. [PMID: 33498768 PMCID: PMC7865957 DOI: 10.3390/ijms22031125] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 01/20/2021] [Accepted: 01/21/2021] [Indexed: 12/28/2022] Open
Abstract
The combination of in vitro maturation (IVM) techniques and oocyte vitrification (OV) could increase the number of useful oocytes in different types of patients. IVM and subsequent OV is the most widely used clinical strategy. Would the results improve if we reverse the order of the techniques? Here, we evaluated survival, in vitro maturation, time to extrude the first polar body (PB), and the metaphase plate configuration of human prophase I (GV) oocytes before or after their vitrification. Specific, 195 GV oocytes from 104 patients subjected to controlled ovarian stimulation cycles were included. We stablished three experimental groups: GV oocytes vitrified and IVM (Group GV-Vit), GV oocytes IVM and vitrified at MII stage (Group MII-Vit), and GV oocytes IVM (Group not-Vit). All of them were in vitro matured for a maximum of 48 h and fixed to study the metaphase plate by confocal microscopy. According to our results, the vitrification of immature oocytes and their subsequent maturation presented similar survival, maturation, and metaphase plate conformation rates, but a significantly higher percentage of normal spindle than the standard strategy. Additionally, the extension of IVM time to 48 h did not seem to negatively affect the oocyte metaphase plate configuration.
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Affiliation(s)
- Irene Peinado
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
| | - Isabel Moya
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
| | | | - Macarena Barrera
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
- Biotechnology Department, Alicante University, 03690 Alicante, Spain;
| | - Laura García-Valverde
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
- Biotechnology Department, Alicante University, 03690 Alicante, Spain;
| | - Raquel Francés
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
- Energy and Memory, Brain Plasticity Unit, CNRS, ESPCI Paris, PSL Research University, 75005 Paris, France
| | - Patricia Torres
- Assisted Human Reproduction Unit, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.P.); (I.M.); (M.B.); (L.G.-V.); (R.F.); (P.T.)
| | - María José Gómez-Torres
- Biotechnology Department, Alicante University, 03690 Alicante, Spain;
- Cátedra Human Fertility, Universidad de Alicante, 03690 Alicante, Spain
- Correspondence:
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11
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Yahfoufi ZA, Bai D, Khan SN, Chatzicharalampous C, Kohan-Ghadr HR, Morris RT, Abu-Soud HM. Glyphosate Induces Metaphase II Oocyte Deterioration and Embryo Damage by Zinc Depletion and Overproduction of Reactive Oxygen Species. Toxicology 2020; 439:152466. [PMID: 32315717 DOI: 10.1016/j.tox.2020.152466] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 04/08/2020] [Accepted: 04/14/2020] [Indexed: 12/18/2022]
Abstract
Glyphosate is the most popular herbicide used in modern agriculture, and its use has been increasing substantially since its introduction. Accordingly, glyphosate exposure from food and water, the environment, and accidental and occupational venues has also increased. Recent studies have demonstrated a relationship between glyphosate exposure and a number of disorders such as cancer, immune and metabolic disorders, endocrine disruption, imbalance of intestinal flora, cardiovascular disease, and infertility; these results have given glyphosate a considerable amount of media and scientific attention. Notably, glyphosate is a powerful metal chelator, which could help explain some of its effects. Recently, our findings on 2,3-dimercapto-1-propanesulfonic acid, another metal chelator, showed deterioration of oocyte quality. Here, to generalize, we investigated the effects of glyphosate (0 - 300 μM) on metaphase II mouse oocyte quality and embryo damage to obtain insight on its mechanisms of cellular action and the tolerance of oocytes and embryos towards this chemical. Our work shows for the first time that glyphosate exposure impairs metaphase II mouse oocyte quality via two mechanisms: 1) disruption of the microtubule organizing center and chromosomes such as anomalous pericentrin formation, spindle fiber destruction and disappearance, and defective chromosomal alignment and 2) substantial depletion of intracellular zinc bioavailability and enhancement of reactive oxygen species accumulation. Similar effects were found in embryos. These results may help clarify the effects of glyphosate exposure on female fertility and provide counseling and preventative steps for excessive glyphosate intake and resulting oxidative stress and reduced zinc bioavailability.
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Affiliation(s)
- Zeina A Yahfoufi
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, Michigan 48201, United States; Department of Physiology, Wayne State University School of Medicine, Detroit, MI,48201, United States
| | - David Bai
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, Michigan 48201, United States
| | - Sana N Khan
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, Michigan 48201, United States
| | - Charalampos Chatzicharalampous
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, Michigan 48201, United States
| | - Hamid-Reza Kohan-Ghadr
- Michigan State University, Department of Obstetrics, Gynecology and Reproductive Biology, College of Human Medicine, Grand Rapids, Michigan 45903, United States
| | - Robert T Morris
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, Michigan 48201, United States; Karmaros Cancer Institute, Detroit, MI, 48201, United States
| | - Husam M Abu-Soud
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, Michigan 48201, United States; Department of Physiology, Wayne State University School of Medicine, Detroit, MI,48201, United States; Department of Microbiology, Immunology and Biochemistry, Wayne State University School of Medicine, Detroit, MI, 48201, United States.
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12
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Impact of Melatonin Supplementation in Women with Unexplained Infertility Undergoing Fertility Treatment. Antioxidants (Basel) 2019; 8:antiox8090338. [PMID: 31450726 PMCID: PMC6769719 DOI: 10.3390/antiox8090338] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 08/09/2019] [Accepted: 08/21/2019] [Indexed: 01/25/2023] Open
Abstract
Unexplained infertility occurs when common causes for a couple’s inability to conceive have been excluded. Although origins of idiopathic infertility are still unclear, factors, such as an altered oxidative balance, are believed to be involved. Melatonin is an outstanding antioxidant reportedly present in the follicular fluid (FF), which has been suggested as a useful tool in the management of human fertility. Herein, we observed that intrafollicular concentrations of melatonin were blunted in women with unexplained infertility (UI), which was associated with a marked oxidative imbalance in UI patients’ FF. Based on these findings, this randomized pilot study was aimed at assessing whether exogenous melatonin ameliorated oxidative stress and improved in vitro fertilization (IVF) success rates in UI. Thus, 3 mg/day or 6 mg/day of melatonin were given to UI patients for a period spanning from the first appointment to control ovarian stimulation until the day of follicular puncture. Our results indicate that melatonin supplementation, irrespective of the two doses tested, ameliorated intrafollicular oxidative balance and oocyte quality in UI patients, and that this translated into a slight increase in the rate of pregnancies/live births. Therefore, although the indoleamine has shown therapeutic potential in this clinical setting, larger clinical trials in populations with different backgrounds are encouraged to corroborate the usefulness of melatonin.
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13
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Do Bioreactor Designs with More Efficient Oxygen Supply to Ovarian Cortical Tissue Fragments Enhance Follicle Viability and Growth In Vitro? Processes (Basel) 2019. [DOI: 10.3390/pr7070450] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Background: Autotransplantation of cryopreserved ovarian tissue is currently the main option to preserve fertility for cancer patients. To avoid cancer cell reintroduction at transplantation, a multi-step culture system has been proposed to obtain fully competent oocytes for in vitro fertilization. Current in vitro systems are limited by the low number and health of secondary follicles produced during the first step culture of ovarian tissue fragments. To overcome such limitations, bioreactor designs have been proposed to enhance oxygen supply to the tissue, with inconsistent results. This retrospective study investigates, on theoretical grounds, whether the lack of a rational design of the proposed bioreactors prevented the full exploitation of follicle growth potential. Methods: Models describing oxygen transport in bioreactors and tissue were developed and used to predict oxygen availability inside ovarian tissue in the pertinent literature. Results: The proposed theoretical analysis suggests that a successful outcome is associated with enhanced oxygen availability in the cultured tissue in the considered bioreactor designs. This suggests that a rational approach to bioreactor design for ovarian tissue culture in vitro may help exploit tissue potential to support follicle growth.
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14
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Zhang Y, Guo J, Nie XW, Li ZY, Wang YM, Liang S, Li S. Rosmarinic acid treatment during porcine oocyte maturation attenuates oxidative stress and improves subsequent embryo development in vitro. PeerJ 2019; 7:e6930. [PMID: 31249731 PMCID: PMC6587974 DOI: 10.7717/peerj.6930] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 04/09/2019] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND In vitro maturation (IVM) of oocytes has been widely used in the field of assisted reproductive technology. However, oocytes can be injured by oxidative stress during the process of IVM. METHODS The present study was designed to evaluate the influences of rosmarinic acid (RA) on the IVM of porcine oocytes and the subsequent development of early-stage embryos as well as its underlying mechanisms. Various concentrations of RA (5 µM, 10 µM, and 25 µM) were treated with porcine oocyte maturation medium during the period of IVM. RESULTS AND DISCUSSION The results showed that 5 µM RA treatment during the period of porcine oocyte IVM improves blastocyst quality and hatching ability after parthenogenetic activation. Furthermore, the presence of RA during the period of IVM dramatically improved the total number of cells after somatic cell nuclear transfer compared to the number of cells in the control group. Notably, RA treatment during the period of porcine oocyte IVM decreased intracellular reactive oxygen species generation not only in oocytes but also in cumulus cells. Further analysis showed that the intracellular free thiols levels in the oocytes were enhanced by treatment with RA during the period of porcine oocyte IVM compared to the free thiols levels in the control groups. These results indicate that RA improves the developmental competence of porcine oocytes during the IVM period by attenuating oxidative stress.
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Affiliation(s)
- Yan Zhang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- Department of Animal Science, Chungbuk National University, Cheongju, South Korea
| | - Jing Guo
- Chongqing Reproductive and Genetics Institute, Chongqing, China
- Chongqing Key Laboratory of Human Embryo Engineering, Chongqing, China
| | - Xiao Wei Nie
- Department of Reproductive Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Zi Yue Li
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Yu Meng Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Shuang Liang
- Department of Animal Science, College of Animal Sciences, Jilin University, Changchun, China
| | - Suo Li
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
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15
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Da Broi MG, Giorgi VSI, Wang F, Keefe DL, Albertini D, Navarro PA. Influence of follicular fluid and cumulus cells on oocyte quality: clinical implications. J Assist Reprod Genet 2018; 35:735-751. [PMID: 29497954 PMCID: PMC5984887 DOI: 10.1007/s10815-018-1143-3] [Citation(s) in RCA: 157] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Accepted: 02/19/2018] [Indexed: 01/03/2023] Open
Abstract
An equilibrium needs to be established by the cellular and acellular components of the ovarian follicle if developmental competence is to be acquired by the oocyte. Both cumulus cells (CCs) and follicular fluid (FF) are critical determinants for oocyte quality. Understanding how CCs and FF influence oocyte quality in the presence of deleterious systemic or pelvic conditions may impact clinical decisions in the course of managing infertility. Given that the functional integrities of FF and CCs are susceptible to concurrent pathological conditions, it is important to understand how pathophysiological factors influence natural fertility and the outcomes of pregnancy arising from the use of assisted reproduction technologies (ARTs). Accordingly, this review discusses the roles of CCs and FF in ensuring oocyte competence and present new insights on pathological conditions that may interfere with oocyte quality by altering the intrafollicular environment.
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Affiliation(s)
- M. G. Da Broi
- Division of Human Reproduction, Department of Gynecology and Obstetrics, Ribeirão Preto School of Medicine, University of São Paulo, Avenida Bandeirantes, 3900, Ribeirao Preto, SP CEP: 14049-900 Brazil
| | - V. S. I. Giorgi
- Division of Human Reproduction, Department of Gynecology and Obstetrics, Ribeirão Preto School of Medicine, University of São Paulo, Avenida Bandeirantes, 3900, Ribeirao Preto, SP CEP: 14049-900 Brazil
| | - F. Wang
- Department of Obstetrics and Gynecology, Laboratory of Reproductive Medicine, NYU School of Medicine, 180 Varick Street, New York, NY 10014 USA
| | - D. L. Keefe
- Department of Obstetrics and Gynecology, Laboratory of Reproductive Medicine, NYU School of Medicine, 180 Varick Street, New York, NY 10014 USA
- Department of Obstetrics and Gynecology, New York University, Langone Medical Center, New York, NY 10016 USA
| | - D. Albertini
- The Center for Human Reproduction, New York, NY USA
| | - P. A. Navarro
- Division of Human Reproduction, Department of Gynecology and Obstetrics, Ribeirão Preto School of Medicine, University of São Paulo, Avenida Bandeirantes, 3900, Ribeirao Preto, SP CEP: 14049-900 Brazil
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16
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Kim EJ, Lee J, Youm HW, Kim SK, Lee JR, Suh CS, Kim SH. Comparison of Follicle Isolation Methods for Mouse Ovarian Follicle Culture In Vitro. Reprod Sci 2017; 25:1270-1278. [DOI: 10.1177/1933719117737851] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Eun Jung Kim
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Korea
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Jaewang Lee
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Korea
- Jaewang Lee is now with Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Hye Won Youm
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Seul Ki Kim
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Korea
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Jung Ryeol Lee
- Department of Obstetrics and Gynecology, Seoul National University Bundang Hospital, Seongnam, Korea
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Chang Suk Suh
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Korea
| | - Seok Hyun Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
- Department of Obstetrics and Gynecology, Seoul National University Hospital, Seoul, Korea
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17
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Zhang Y, Wang H, Liu W, Yang Y, Wang X, Zhang Z, Guo Q, Wang C, Xia G. Natriuretic peptides improve the developmental competence of in vitro cultured porcine oocytes. Reprod Biol Endocrinol 2017; 15:41. [PMID: 28558842 PMCID: PMC5450137 DOI: 10.1186/s12958-017-0258-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 05/15/2017] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Natriuretic peptides (NPs), brain and C type NPs (BNP and CNP), were involved in the maintenance of porcine oocyte meiotic arrest. The present study investigated the effects of NPs on developmental competence of immature porcine oocytes with follicles of different sizes. METHODS Follicular fluid NP levels were examined by radioimmunoassay. The developmental competence of porcine oocytes was evaluated by cleavage and blastocyst developmental rates after in vitro fertilization (IVF) or parthenogenetic activation (PA) of cumulus oocyte complexes (COCs), which were recovered from follicle with different sizes. NP levels were examined and classified according to the cleavage potential after IVF with COCs released from these follicles. RESULTS The BNP and CNP concentrations were increased with follicular size in follicular fluid and sustained at the set ranges of 3.0 - 6.0 mm follicles compared to 6.1 - 8.0 mm follicles. The oocytes developed from 3.0 to 6.0 mm follicles demonstrated increased embryo cleavage and blastocyst ratios after IVF, with an increased follicle size (P < 0.05). Moreover, BNP and CNP significantly promoted the blastocyst developmental rates of 3.0 - 6.0 mm follicles, but could not improve the developmental competence of oocytes from 6.1 to 8.0 mm follicles due to low NP levels. The COCs from 3.0 to 4.0 mm follicles were pre-incubated in 100 ng/ml of BNP and CNP media for 20 h before regular in vitro maturation, which demonstrated 2 to 3 folds higher developmental competencies in both PA and IVF groups compared to respective controls (P < 0.01). CONCLUSIONS The effects of BNP and CNP supplementation in the pre-maturation culture media (PMC) on porcine developmental competence from COCs in follicles of different sizes were different and improved the developmental competence of porcine oocytes from small antral follicle in vitro.
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Affiliation(s)
- Yanhao Zhang
- 0000 0004 0530 8290grid.22935.3fState Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193 People’s Republic of China
| | - Huarong Wang
- 0000 0004 0530 8290grid.22935.3fState Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193 People’s Republic of China
| | - Wei Liu
- 0000 0004 0530 8290grid.22935.3fState Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193 People’s Republic of China
| | - Ye Yang
- 0000 0004 0530 8290grid.22935.3fState Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193 People’s Republic of China
| | - Xiao Wang
- 0000 0004 0530 8290grid.22935.3fState Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193 People’s Republic of China
| | - Zhiyuan Zhang
- 0000 0004 0530 8290grid.22935.3fState Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193 People’s Republic of China
| | - Qirui Guo
- 0000 0004 0530 8290grid.22935.3fState Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193 People’s Republic of China
| | - Chao Wang
- 0000 0004 0530 8290grid.22935.3fState Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193 People’s Republic of China
| | - Guoliang Xia
- 0000 0004 0530 8290grid.22935.3fState Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193 People’s Republic of China
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18
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Mahfoudh AM, Moon JH, Henderson S, Garcia-Cerrudo E, Son WY, Dahan MH. Relationship between pre-ICSI meiotic spindle angle, ovarian reserve, gonadotropin stimulation, and pregnancy outcomes. J Assist Reprod Genet 2017; 34:609-615. [PMID: 28247100 DOI: 10.1007/s10815-017-0890-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Accepted: 01/31/2017] [Indexed: 11/30/2022] Open
Abstract
PURPOSE The goals of this study are to analyze the clinical pregnancy rate as a function of the pre-intracytoplasmic sperm injection (ICSI) oocyte spindle angle and determine factors which can be associated with different spindle angles, if clinically relevant. METHODS Fifty-eight patients, who underwent their first ICSI cycle from January to December 2013, were included. Eight hundred thirty oocytes were collected, and 648 were metaphase II (MII) on retrieval day. Spindles were characterized in terms of visibility and position in relation to the first polar body (PB). Oocytes were separated into four groups based on angle: (group 1, n = 297) 0°-29°; (group 2 n = 212) 30°-89°; (group 3, n = 72) ≥90°; and those with no visible spindle (group 4, n = 67). RESULTS The rate of blastocyst development was associated with the spindle angle (p = 0.002). The rate of good quality blastocysts were as follows: group 1 (42%), group 2 (30%), group 3 (35%), and group 4 (19%) (p = 0.02). Pregnancy and live birth rates were also affected (p = 0.007 and p = 0.046, respectively). Antral follicle count (AFC) (p = 0.001), total FSH stimulating dose (p = 0.0001), and peak serum estradiol level (p = 0.0001) were associated with spindle angle grouping. Miscarriage rates trended different (p = 0.07). On the other hand, day 3 follicle-stimulating hormone (FSH) levels and female and male age were not associated with spindle angle grouping. CONCLUSIONS Embryos resulting from oocytes with pre-ICSI spindle angles between 0° and 29° were associated with better blastocyst, pregnancy, live birth, and miscarriage rates when compared to oocytes that had no visible spindle. Low ovarian reserve and excessive stimulation were also associated with lack of spindle and therefore lower pregnancy outcomes.
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Affiliation(s)
- Alina M Mahfoudh
- MUHC Reproductive Centre, 888 Demaisonneuve East suite 200, Montreal, Quebec, H2L 4S8, Canada.
| | - Jeong H Moon
- Fertility and Reproductive Health, Stanford Children Health, 1195 w Fremont Avenue, Sunnyvale, CA, 94087, USA
| | - Sara Henderson
- MUHC Reproductive Centre, 888 Demaisonneuve East suite 200, Montreal, Quebec, H2L 4S8, Canada
| | - Elena Garcia-Cerrudo
- MUHC Reproductive Centre, 888 Demaisonneuve East suite 200, Montreal, Quebec, H2L 4S8, Canada
| | - Weon-Young Son
- MUHC Reproductive Centre, 888 Demaisonneuve East suite 200, Montreal, Quebec, H2L 4S8, Canada
| | - Michael H Dahan
- MUHC Reproductive Centre, 888 Demaisonneuve East suite 200, Montreal, Quebec, H2L 4S8, Canada
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19
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Jianini BTGM, Giorgi VSI, Da Broi MG, de Paz CCP, Rosa e Silva JC, Ferriani RA, Navarro PA. Peritoneal Fluid From Infertile Women With Minimal/Mild Endometriosis Compromises the Meiotic Spindle of Metaphase II Bovine Oocytes: A Pilot Study. Reprod Sci 2017; 24:1304-1311. [DOI: 10.1177/1933719116687658] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Bruna Talita Gazeto Melo Jianini
- Human Reproduction Division, Department of Gynecology and Obstetrics, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Vanessa Silvestre Innocenti Giorgi
- Human Reproduction Division, Department of Gynecology and Obstetrics, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Michele Gomes Da Broi
- Human Reproduction Division, Department of Gynecology and Obstetrics, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Cláudia Cristina Paro de Paz
- Department of Genetics, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Júlio César Rosa e Silva
- Human Reproduction Division, Department of Gynecology and Obstetrics, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Rui Alberto Ferriani
- Human Reproduction Division, Department of Gynecology and Obstetrics, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- National Institute of Hormones and Woman’s Health, CNPq, Porto Alegre, Rio Grande do Sul, Brazil
| | - Paula Andrea Navarro
- Human Reproduction Division, Department of Gynecology and Obstetrics, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
- National Institute of Hormones and Woman’s Health, CNPq, Porto Alegre, Rio Grande do Sul, Brazil
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20
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Chen J, Liu J. Erroneous Silencing of the Mitotic Checkpoint by Aberrant Spindle Pole-Kinetochore Coordination. Biophys J 2016; 109:2418-35. [PMID: 26636952 DOI: 10.1016/j.bpj.2015.10.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 10/02/2015] [Accepted: 10/21/2015] [Indexed: 12/21/2022] Open
Abstract
To segregate chromosomes during cell division, microtubules that form the bipolar spindle attach to and pull on paired chromosome kinetochores. The spindle assembly checkpoint (SAC) is activated at unattached and misattached kinetochores to prevent further mitotic progression. The SAC is silenced after all the kinetochores establish proper and stable attachment to the spindle. Robust timing of SAC silencing after the last kinetochore-spindle attachment herein dictates the fidelity of chromosome segregation. Chromosome missegregation is rare in typical somatic cell mitosis, but frequent in cancer cell mitosis and in meiosis I of mammalian oocytes. In the latter cases, SAC is normally activated in response to disruptions of kinetochore-spindle attachments, suggesting that frequent chromosome missegregation ensues from faulty SAC silencing. In-depth understanding of how SAC silencing malfunctions in these cases is yet missing, but is believed to hold promise for treatment of cancer and prevention of human miscarriage and birth defects. We previously established a spatiotemporal model that, to the best of our knowledge, explained the robustness of SAC silencing in normal mitosis for the first time. In this article, we take advantage of the whole-cell perspective of the spatiotemporal model to identify possible causes of chromosome missegregation out of the distinct features of spindle assembly exhibited by cancer cells and mammalian oocytes. The model results explain why multipolar spindle could inhibit SAC silencing and spindle pole clustering could promote it-albeit accompanied by more kinetochore attachment errors. The model also eliminates geometric factors as the cause for nonrobust SAC silencing in oocyte meiosis, and instead, suggests atypical kinetochore-spindle attachment in meiosis as a potential culprit. Overall, the model shows that abnormal spindle-pole formation and its aberrant coordination with atypical kinetochore-spindle attachments could compromise the robustness of SAC silencing. Our model highlights systems-level coupling between kinetochore-spindle attachment and spindle-pole formation in SAC silencing.
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Affiliation(s)
- Jing Chen
- National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland
| | - Jian Liu
- National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland.
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Khan SN, Shaeib F, Thakur M, Jeelani R, Awonuga AO, Goud PT, Abu-Soud HM. Peroxynitrite deteriorates oocyte quality through disassembly of microtubule organizing centers. Free Radic Biol Med 2016; 91:275-80. [PMID: 26746586 DOI: 10.1016/j.freeradbiomed.2015.12.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 12/23/2015] [Accepted: 12/29/2015] [Indexed: 11/24/2022]
Abstract
Previous theoretical studies have suggested that utilization of 3-D imaging to acquire morphologic parameters of meiotic spindles may be useful in infertility related procedures as an assessment of oocyte quality. However, our results show that treatment of oocytes with increasing concentrations of peroxynitrite (ONOO(-)) caused a dramatic alteration in spindle shape in which morphologic parameters are not measurable or are uninformative in terms of oocyte quality. Metaphase II mouse oocytes (n=520) were treated with increasing concentrations of ONOO(-), after which all oocytes were fixed and subjected to indirect immunofluorescence. Oocyte quality was assessed by alterations in the microtubule-organizing center (MTOC), pericentrin location, microtubule morphology, and chromosomal alignment. In untreated oocytes, pericentrin is primarily assembled utilizing the acentrosomal MTOC, which appears as a condensation at both spindle poles. The spindle has a symmetrical pointed barrel shape, assembled around the chromosomal plate at the spindle equator. Oocytes treated with low concentrations of ONOO(-) (<2.5 μM) showed shortening of the spindle apparatus, while pericentrin scatters from a tight condensation to a dispersed cluster around each spindle pole. At higher ONOO(-) concentrations (>2.5μM) the central attachments between microtubules are strained and bend or unevenly break, and the MTOC proteins are further dispersed or undetectable. Peroxynitrite mediated MTOC damage, which deranges the chromosomal scaffold at the time of assembly and separation, caused the deterioration in oocyte quality. These results provide a link between reactive oxygen species and poor reproductive outcomes and elucidate the underlying etiology, which could be used as a superior biomarker for oocyte quality compared to existing assessment tools.
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Affiliation(s)
- Sana N Khan
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI, USA
| | - Faten Shaeib
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI, USA
| | - Mili Thakur
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI, USA
| | - Roohi Jeelani
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI, USA
| | - Awoniyi O Awonuga
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI, USA
| | - Pravin T Goud
- Department of Obstetrics and gynecology, Division of Reproductive Endocrinology and Infertility, University of California Davis, Sacramento, CA, USA; California IVF Fertility Center, Davis and Sacramento, USA
| | - Husam M Abu-Soud
- Department of Obstetrics and Gynecology, The C.S. Mott Center for Human Growth and Development, Wayne State University School of Medicine, Detroit, MI, USA; Department of Biochemistry and Molecular Biology, Wayne State University School of Medicine, Detroit, MI 48202, USA.
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Oxidative stress and oocyte quality: ethiopathogenic mechanisms of minimal/mild endometriosis-related infertility. Cell Tissue Res 2015; 364:1-7. [DOI: 10.1007/s00441-015-2339-9] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Accepted: 11/23/2015] [Indexed: 11/29/2022]
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Pazoki H, Eimani H, Farokhi F, Shahverdi A, Salman Yazdi R, Tahaei LS. Comparing the growth and the development of mouse pre-antral follicle in medium with PL (Platelet Layset) and with FBS. MIDDLE EAST FERTILITY SOCIETY JOURNAL 2015. [DOI: 10.1016/j.mefs.2015.01.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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Lunardi FO, de Aguiar FLN, Duarte ABG, Araújo VR, de Lima LF, Ribeiro de Sá NA, Vieira Correia HH, Domingues SFS, Campello CC, Smitz J, de Figueiredo JR, Ribeiro Rodrigues AP. Ovine secondary follicles vitrified out the ovarian tissue grow and develop in vitro better than those vitrified into the ovarian fragments. Theriogenology 2015; 85:1203-10. [PMID: 26852069 DOI: 10.1016/j.theriogenology.2015.10.043] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Revised: 10/08/2015] [Accepted: 10/30/2015] [Indexed: 11/25/2022]
Abstract
Cryopreservation of preantral follicles is a promising technique to preserve female fertility. The aim of this study was to evaluate the effect of vitrification on the development of secondary follicles included in ovarian tissue or isolated after microdissection. An important end point included is the capacity of grown oocytes to resume meiosis. Sheep ovarian cortexes were cut into fragments and split into three different groups: (1) fresh (control): secondary follicles isolated without any previous vitrification; (2) follicle-vitrification (follicle-vit): secondary follicles vitrified in isolated form; and (3) tissue-vitrification (tissue-vit): secondary follicles vitrified within fragments of ovarian tissue (in situ former) and subsequently subjected to isolation. From the three groups, isolated secondary follicles were submitted to IVC for 18 days. After IVC, cumulus-oocyte complexes (COCs) were harvested from follicles. As an additional control group, in vivo grown, in vivo-grown COCs were collected from antral ovarian follicles. All, recovered COCs were matured and the chromatin configuration was evaluated. Data were analyzed by ANOVA, and the means were compared by Student-Newman-Keuls test, and by chi-square. Differences were considered to be significant when P < 0.05. Isolated preantral follicles from all treatments had normal morphology, antrum formation, and low follicle degeneration after IVC. The growth rate between control and follicle-vit did not differ (P > 0.05), and was higher (P < 0.05) than for tissue-vit. The percentage of follicles that decreased diameter during IVC was significantly higher in tissue-vit than the in follicle-vit. Recovery rate of oocytes from normal follicles was higher in follicle-vit than in tissue-vit. Furthermore, oocyte viability was lower in tissue-vit than other treatments, and follicle-vit did not differ from control and in vivo grown. The percentage of oocytes meiosis resuming was not different between treatments except for in vivo grown. After vitrification, only follicle-vit showed metaphase I oocyte. We conclude that secondary follicles vitrified after isolation displayed a better follicular growth rate, oocyte viability, percentage of oocytes reaching the metaphase I stage, and fewer follicles with decreased diameter after IVC.
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Affiliation(s)
- Franciele Osmarini Lunardi
- Laboratory of Manipulation of Oocytes and Ovarian Pre-antral Follicles (LAMOFOPA), Faculty of Veterinary Medicine, Ceará State University, Fortaleza, CE, Brazil.
| | - Francisco Leo Nascimento de Aguiar
- Laboratory of Manipulation of Oocytes and Ovarian Pre-antral Follicles (LAMOFOPA), Faculty of Veterinary Medicine, Ceará State University, Fortaleza, CE, Brazil
| | - Ana Beatriz Graça Duarte
- Laboratory of Manipulation of Oocytes and Ovarian Pre-antral Follicles (LAMOFOPA), Faculty of Veterinary Medicine, Ceará State University, Fortaleza, CE, Brazil
| | - Valdevane Rocha Araújo
- Laboratory of Manipulation of Oocytes and Ovarian Pre-antral Follicles (LAMOFOPA), Faculty of Veterinary Medicine, Ceará State University, Fortaleza, CE, Brazil
| | - Laritza Ferreira de Lima
- Laboratory of Manipulation of Oocytes and Ovarian Pre-antral Follicles (LAMOFOPA), Faculty of Veterinary Medicine, Ceará State University, Fortaleza, CE, Brazil
| | - Naiza Arcângela Ribeiro de Sá
- Laboratory of Manipulation of Oocytes and Ovarian Pre-antral Follicles (LAMOFOPA), Faculty of Veterinary Medicine, Ceará State University, Fortaleza, CE, Brazil
| | - Hudson Henrique Vieira Correia
- Laboratory of Manipulation of Oocytes and Ovarian Pre-antral Follicles (LAMOFOPA), Faculty of Veterinary Medicine, Ceará State University, Fortaleza, CE, Brazil
| | | | - Cláudio Cabral Campello
- Laboratory of Manipulation of Oocytes and Ovarian Pre-antral Follicles (LAMOFOPA), Faculty of Veterinary Medicine, Ceará State University, Fortaleza, CE, Brazil
| | - Johan Smitz
- Follicle Biology Laboratory, Center for Reproductive Medicine, UZ Brussel, Brussels, Belgium
| | - José Ricardo de Figueiredo
- Laboratory of Manipulation of Oocytes and Ovarian Pre-antral Follicles (LAMOFOPA), Faculty of Veterinary Medicine, Ceará State University, Fortaleza, CE, Brazil
| | - Ana Paula Ribeiro Rodrigues
- Laboratory of Manipulation of Oocytes and Ovarian Pre-antral Follicles (LAMOFOPA), Faculty of Veterinary Medicine, Ceará State University, Fortaleza, CE, Brazil
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DNA damage-induced metaphase I arrest is mediated by the spindle assembly checkpoint and maternal age. Nat Commun 2015; 6:8706. [PMID: 26522734 PMCID: PMC4667640 DOI: 10.1038/ncomms9706] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 09/22/2015] [Indexed: 12/21/2022] Open
Abstract
In mammalian oocytes DNA damage can cause chromosomal abnormalities that potentially lead to infertility and developmental disorders. However, there is little known about the response of oocytes to DNA damage. Here we find that oocytes with DNA damage arrest at metaphase of the first meiosis (MI). The MI arrest is induced by the spindle assembly checkpoint (SAC) because inhibiting the SAC overrides the DNA damage-induced MI arrest. Furthermore, this MI checkpoint is compromised in oocytes from aged mice. These data lead us to propose that the SAC is a major gatekeeper preventing the progression of oocytes harbouring DNA damage. The SAC therefore acts to integrate protection against both aneuploidy and DNA damage by preventing production of abnormal mature oocytes and subsequent embryos. Finally, we suggest escaping this DNA damage checkpoint in maternal ageing may be one of the causes of increased chromosome anomalies in oocytes and embryos from older mothers.
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Giorgi VSI, Da Broi MG, Paz CCP, Ferriani RA, Navarro PA. N-Acetyl-Cysteine and l-Carnitine Prevent Meiotic Oocyte Damage Induced by Follicular Fluid From Infertile Women With Mild Endometriosis. Reprod Sci 2015; 23:342-51. [PMID: 26342050 DOI: 10.1177/1933719115602772] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This study evaluated the potential protective effect of the antioxidants, l-carnitine (LC) and N-acetyl-cysteine (NAC), in preventing meiotic oocyte damage induced by follicular fluid (FF) from infertile women with mild endometriosis (ME). We performed an experimental study. The FF samples were obtained from 22 infertile women undergoing stimulated cycles for intracytoplasmic sperm injection (11 with ME and 11 without endometriosis). Immature bovine oocytes were submitted to in vitro maturation (IVM) divided into 9 groups: no-FF (No-FF); with FF from control (CFF) or ME (EFF) groups; and with LC (C + LC and E + LC), NAC (C + NAC and E + NAC), or both antioxidants (C + 2Ao and E + 2Ao). After IVM, oocytes were immunostained for visualization of microtubules and chromatin by confocal microscopy. The percentage of meiotically normal metaphase II (MII) oocytes was significantly lower in the EFF group (51.35%) compared to No-FF (86.36%) and CFF (83.52%) groups. The E + NAC (62.22%), E + LC (80.61%), and E + 2Ao (61.40%) groups showed higher percentage of normal MII than EFF group. The E + LC group showed higher percentage of normal MII than E + NAC and E + 2Ao groups and a similar percentage to No-FF and CFF groups. Therefore, FF from infertile women with ME causes meiotic abnormalities in bovine oocytes, and, for the first time, we demonstrated that the use of NAC and LC prevents these damages. Our findings elucidate part of the pathogenic mechanisms involved in infertility associated with ME and open perspectives for further studies investigating whether the use of LC could improve the natural fertility and/or the results of in vitro fertilization of women with ME.
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Affiliation(s)
- Vanessa S I Giorgi
- Human Reproduction Division, Department of Gynecology and Obstetrics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Michele G Da Broi
- Department of Genetics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Claudia C P Paz
- National Institute of Hormones and Women's Health, CNPq, Brazil
| | - Rui A Ferriani
- Human Reproduction Division, Department of Gynecology and Obstetrics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil National Institute of Hormones and Women's Health, CNPq, Brazil
| | - Paula A Navarro
- Human Reproduction Division, Department of Gynecology and Obstetrics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil National Institute of Hormones and Women's Health, CNPq, Brazil
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Effect of Acrylamide on Oocyte Nuclear Maturation and Cumulus Cells Apoptosis in Mouse In Vitro. PLoS One 2015; 10:e0135818. [PMID: 26275143 PMCID: PMC4537141 DOI: 10.1371/journal.pone.0135818] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 07/27/2015] [Indexed: 11/19/2022] Open
Abstract
Acrylamide (ACR) is a chemical compound with severe neurotoxicity, genotoxicity, carcinogenicity and reproductive toxicity. Recent studies showed that ACR impairs the function of reproductive organs, e.g., epididymis and testes. In vitro maturation of mouse oocyte is a sensitive assay to identify potential chemical hazard to female fertility. The aim of this study was to evaluate the adverse effects of ACR on the nuclear maturation and cumulus cells apoptosis of mouse oocytes in vitro. Cumulus–oocyte complexes were incubated in a maturation medium containing 0, 5, 10 and 20 μM of ACR. Chromosome alignment and spindle morphology of oocytes was determined by immunofluorescence and confocal microscopy. Our results showed that oocytes exposed to different doses of ACR in vitro were associated with a significant decrease of oocyte maturation, significant increase of chromosome misalignment rate, occurrence of abnormal spindle configurations, and the inhibition of oocyte parthenogenetic activation. Furthermore, apoptosis of cumulus cells was determined by TUNEL and CASPASE-3 assay. Results showed that apoptosis in cumulus cells was enhanced and the expression of CASPASE-3 was increased after cumulus–oocyte complexes were exposed to ACR. Therefore, ACR may affect the nuclear maturation of oocytes via the apoptosis of cumulus cells in vitro.
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Connolly JM, Kane MT, Quinlan LR, Dockery P, Hynes AC. Hypoxia limits mouse follicle growth in vitro. Reprod Fertil Dev 2015; 28:RD14471. [PMID: 25863967 DOI: 10.1071/rd14471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Accepted: 03/05/2015] [Indexed: 11/23/2022] Open
Abstract
Ovarian follicle culture is useful for elucidation of factors involved in the regulation of follicular function. We examined the effects of gas phase oxygen concentration, an oil overlay, serum type and medium supplementation with FSH, insulin-transferrin-selenium (ITS) and l-ascorbic acid on cultured preantral mouse follicle growth in a spherical, non-attached follicle culture system. Follicle growth in 5% oxygen was significantly (P < 0.01) inferior to growth in 20% oxygen in terms of follicle diameter. This was likely due to hypoxia, as evidenced by significantly (P < 0.05) increased follicle secretion of vascular endothelial growth factor (VEGF), a marker of cell hypoxia. Follicular growth was not (P > 0.05) affected by an oil overlay, ITS supplementation or serum type. Culture in medium with 5% mouse serum, 1 IU mL-1 FSH, 25 μg mL-1 l-ascorbic acid and 20% oxygen without an oil overlay supported the growth of follicles to a maximum diameter of 380 μm in 6 days. Compared with mature preovulatory mouse follicles in vivo that often have diameters >500 μm within the same time frame, in vitro-grown follicles clearly exhibit limited growth. Thus, adequate oxygenation is an essential factor in the process of optimising follicle growth.
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Zhu L, Han CS, Cao ZL, Wang ZB, Han RG, Wang B, Sun QY. Confocal Microscopic Analysis of the Spindle and Chromosome Configurations of in vitro-Matured Oocytes from Different Types of Polycystic Ovary Syndrome Patients. Gynecol Obstet Invest 2015; 80:179-86. [DOI: 10.1159/000376578] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 01/26/2015] [Indexed: 11/19/2022]
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Ganji R, Nabiuni M, Faraji R. Development of mouse preantral follicle after in vitro culture in a medium containing melatonin. CELL JOURNAL 2015; 16:546-53. [PMID: 25685745 PMCID: PMC4297493 DOI: 10.22074/cellj.2015.499] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2013] [Accepted: 12/01/2013] [Indexed: 12/15/2022]
Abstract
Objective Improvements in cancer treatment have allowed more young women to survive. However, many cancer patients suffer from ovarian failure. Cryopreservation is one
of the solutions for fertility restoration in these patients. The cryopreservation of isolated
follicles is a more attractive approach in the long term. Many endocrine and paracrine
factors can stimulate the granulosa cells of preantral follicles to proliferate. Melatonin acts
as direct free radical scavenger and indirect antioxidant. In this study, we investigated the
direct effects of melatonin on follicle development and oocyte maturation by exposing in
vitro cultured mouse vitrified-warmed ovarian follicles to melatonin.
Materials and Methods In an experimental study, preantral follicles with diameter of
150-180 µm were isolated from prepubertal mouse ovaries. Follicles were vitrified and
thawed using cryolock method. They were then cultured individually for 7 days in droplets
supplemented with 0, 10 and 100 pM melatonin, while ovulation was induced using epidermal growth factor (EGF) and human chorionic gonadotropin (hCG). The survival rate of
follicles and nuclear maturation of ovulated oocytes were determined.
Results At the end of culture, significant increases in follicle survival (p<0.001) and in diameter (p<0.05) were noticed in 10 pM melatonin group compared to control group. In the 100
pM group, survival rate was not affected by melatonin. It was revealed that after induction of
ovulation, total number of metaphase II oocytes in treatment groups were not influenced by
melatonin (p>0.05).
Conclusion Culture of mouse vitrified-warmed preantral follicles in a medium supplemented with 10 pM melatonin increased the number of surviving follicles.
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Affiliation(s)
- Roya Ganji
- Department of Cell and Molecular Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Mohammad Nabiuni
- Department of Cell and Molecular Biology, Faculty of Biological Sciences, Kharazmi University, Tehran, Iran
| | - Roya Faraji
- Reproductive Health Research Center, Guilan University of Medical Sciences, Guilan, Iran
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Dankert D, Demond H, Trapphoff T, Heiligentag M, Rademacher K, Eichenlaub-Ritter U, Horsthemke B, Grümmer R. Pre- and postovulatory aging of murine oocytes affect the transcript level and poly(A) tail length of maternal effect genes. PLoS One 2014; 9:e108907. [PMID: 25271735 PMCID: PMC4182777 DOI: 10.1371/journal.pone.0108907] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Accepted: 08/27/2014] [Indexed: 12/21/2022] Open
Abstract
Maternal effect genes code for oocyte proteins that are important for early embryogenesis. Transcription in oocytes does not take place from the onset of meiotic progression until zygotic genome activation. During this period, protein levels are regulated posttranscriptionally, for example by poly(A) tail length. Posttranscriptional regulation may be impaired in preovulatory and postovulatory aged oocytes, caused by delayed ovulation or delayed fertilization, respectively, and may lead to developmental defects. We investigated transcript levels and poly(A) tail length of ten maternal effect genes in in vivo- and in vitro- (follicle culture) grown oocytes after pre- and postovulatory aging. Quantitative RT-PCR was performed using random hexamer-primed cDNA to determine total transcript levels and oligo(dT)16-primed cDNA to analyze poly(A) tail length. Transcript levels of in vivo preovulatory-aged oocytes remained stable except for decreases in Brg1 and Tet3. Most genes investigated showed a tendency towards increased poly(A) content. Polyadenylation of in vitro preovulatory-aged oocytes was also increased, along with transcript level declines of Trim28, Nlrp2, Nlrp14 and Zar1. In contrast to preovulatory aging, postovulatory aging of in vivo- and in vitro-grown oocytes led to a shortening of poly(A) tails. Postovulatory aging of in vivo-grown oocytes resulted in deadenylation of Nlrp5 after 12 h, and deadenylation of 4 further genes (Tet3, Trim28, Dnmt1, Oct4) after 24 h. Similarly, transcripts of in vitro-grown oocytes were deadenylated after 12 h of postovulatory aging (Tet3, Trim28, Zfp57, Dnmt1, Nlrp5, Zar1). This impact of aging on poly(A) tail length may affect the timed translation of maternal effect gene transcripts and thereby contribute to developmental defects.
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Affiliation(s)
- Debora Dankert
- Institute of Anatomy, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Hannah Demond
- Institute of Human Genetics, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Tom Trapphoff
- Institute of Gene Technology/Microbiology, University of Bielefeld, Bielefeld, Germany
| | - Martyna Heiligentag
- Institute of Gene Technology/Microbiology, University of Bielefeld, Bielefeld, Germany
| | - Katrin Rademacher
- Institute of Human Genetics, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | | | - Bernhard Horsthemke
- Institute of Human Genetics, University Hospital Essen, University Duisburg-Essen, Essen, Germany
| | - Ruth Grümmer
- Institute of Anatomy, University Hospital Essen, University Duisburg-Essen, Essen, Germany
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Brito IR, Lima IMT, Xu M, Shea LD, Woodruff TK, Figueiredo JR. Three-dimensional systems for in vitro follicular culture: overview of alginate-based matrices. Reprod Fertil Dev 2014; 26:915-30. [PMID: 23866836 PMCID: PMC11287383 DOI: 10.1071/rd12401] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 06/12/2013] [Indexed: 08/01/2024] Open
Abstract
The in vitro culture of ovarian follicles has provided critical insight into the biology of the follicle and its enclosed oocyte and the physical interaction and communication between the theca and granulosa cells and the oocyte that is necessary to produce meiotically competent oocytes. Various two-dimensional (2D) and three-dimensional (3D) culture systems have been developed to evaluate the effect of growth factors, hormones, extracellular matrix components and culture conditions on follicle development and oocyte growth and maturation. Among these culture systems, 3D systems make it possible to maintain follicle structure and support communication between the various cell compartments within the follicle. In this review article, we will discuss the three main approaches to ovarian follicle culture: 2D attachment systems, 3D floating systems and 3D encapsulated systems. We will specifically emphasise the development of and advances in alginate-based encapsulated systems for in vitro follicle culture.
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Affiliation(s)
- Ivina R. Brito
- Faculty of Veterinary, Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), PPGCV, State University of Ceará, Fortaleza, CE 60740-930, Brazil
| | | | - Min Xu
- Division of Reproductive Biology and Clinical Research, Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago IL, 60611, USA
| | - Lonnie D. Shea
- Division of Reproductive Biology and Clinical Research, Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago IL, 60611, USA
| | - Teresa K. Woodruff
- Division of Reproductive Biology and Clinical Research, Department of Obstetrics and Gynecology, Feinberg School of Medicine, Northwestern University, Chicago IL, 60611, USA
| | - José R. Figueiredo
- Faculty of Veterinary, Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), PPGCV, State University of Ceará, Fortaleza, CE 60740-930, Brazil
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Li M, Zhao HC, Li R, Yu Y, Qiao J. Chromosomal aberrations in in-vitro matured oocytes influence implantation and ongoing pregnancy rates in a mouse model undergoing intracytoplasmic sperm injection. PLoS One 2014; 9:e103347. [PMID: 25058692 PMCID: PMC4110001 DOI: 10.1371/journal.pone.0103347] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 06/25/2014] [Indexed: 11/19/2022] Open
Abstract
Implantation failure and early pregnancy loss have been reported to be closely related to the quality of mammalian oocytes; however, the pregnant outcome of embryos from in-vitro matured (IVM) oocytes remains unknown. In this study we examined spindle assembly and chromosome segregation during differentiation, and the duration of IVM of mouse oocytes. The resulting implantation and pregnancy outcomes were analyzed to clarify the relationship between the spindle and chromosomes of IVM oocytes and implantation and early pregnancy. Cumulus-enclosed germinal vesicle oocytes were collected and randomly cultured in IVM medium with different IVM durations. One part of IVM oocytes were analyzed the spindle and chromosome morphology by immunofluorescence method, and the other part of them were fertilized by intracytoplasmic sperm injection. The resulting embryos were transferred into pseudo-pregnant female mice, and the post-implantation and full term development was observed. The chromosome aberrations and incorrect spindle assembly seems not affect the early development and blastocyst cell number derived from IVM oocytes, however the development potential of the resulting embryos after implantation were significant decreased with the ratio increasing of chromosome aberrations and incorrect spindle assembly. Accordingly, the full-term development was also decreased. In conclusion, the present study showed the spindle assembly of in vitro-matured oocytes was one of the most important factors that affected the implantation and ongoing pregnancy rates of IVM oocytes, and the improvement by an appropriate duration of maturation in vitro will enhance the post-implantation development potential of the resulting embryos, and decrease implantation failure and early pregnancy loss.
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Affiliation(s)
- Min Li
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
| | - Hong-Cui Zhao
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
| | - Rong Li
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- * E-mail: (YY); (RL)
| | - Yang Yu
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
- * E-mail: (YY); (RL)
| | - Jie Qiao
- Center of Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China
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Monitoring preantral follicle survival and growth in bovine ovarian biopsies by repeated use of neutral red and cultured in vitro under low and high oxygen tension. Theriogenology 2014; 82:387-95. [PMID: 24877724 DOI: 10.1016/j.theriogenology.2014.04.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 04/14/2014] [Accepted: 04/16/2014] [Indexed: 11/22/2022]
Abstract
The development and optimization of preantral follicle culture methods are crucial in fertility preservation strategies. As preantral follicle dynamics are usually assessed by various invasive techniques, the need for alternative noninvasive evaluation tools exists. Recently, neutral red (NR) was put forward to visualize preantral follicles in situ within ovarian cortical fragments. However, intense light exposure of NR-stained tissues can lead to cell death because of increased reactive oxygen species production, which is also associated with elevated oxygen tension. Therefore, we hypothesize that after repeated NR staining, follicle viability and dynamics can be altered by changes in oxygen tension. In the present study, we aim (1) to determine whether NR can be used to repeatedly assess follicular growth, activation, and viability and (2) to assess the effect of a low (5% O2) or high (20% O2) oxygen tension on the viability, growth, and stage transition of preantral follicles cultured in vitro by means of repeated NR staining. Cortical slices (n = 132; six replicates) from bovine ovaries were incubated for 3 hours at 37 °C in a Leibovitz medium with 50 μg/mL NR. NR-stained follicles were evaluated in situ for follicle diameter and morphology. Next, cortical fragments were individually cultured in McCoy's 5A medium for 6 days at 37 °C, 5% CO2, and 5% or 20% O2. On Days 4 and 6, the fragments were restained by adding NR to the McCoy's medium and follicles were reassessed. In both low and high oxygen tension treatment groups, approximately 70% of the initial follicles survived a 6-day in vitro culture, but no significant difference in follicle survival on Day 4 or 6 could be observed compared with Day 0 (P > 0.05). A significant decrease in the number of primordial and increase in primary and secondary follicles was observed within 4 days of culture (P < 0.001). In addition, a significant increase of the mean follicle diameter in NR-stained follicles was observed (P < 0.001), resulting in an average growth of 11.82 ± 0.81 μm (5% O2) and 11.78 ± 1.06 μm (20% O2) on Day 4 and 20.94 ± 1.24 μm (5% O2) and 19.12 ± 1.36 μm (20% O2) on Day 6 compared with Day 0. No significant differences in follicle growth rate or stage transition could be observed between 5% and 20% O2 (P > 0.05). In conclusion, after repeated NR staining, we could not find a difference between low and high oxygen tension in terms of follicle viability, stage transition, or growth. Therefore, under our culture conditions follicle dynamics are not determined by the oxygen tension in combination with quality assessment protocols using repeated NR staining.
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Dib LA, Broi MGD, Navarro PA. Comparative Analysis of the Spindle of Fresh In Vivo-Matured Human Oocytes Through Polarized Light and Confocal Microscopy. Reprod Sci 2014; 21:984-992. [DOI: 10.1177/1933719113519174] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Luciana Azôr Dib
- Department of Obstetrics and Gynecology, Ribeirão Preto Medical School, São Paulo University, Ribeirão Preto, Sao Paulo, Brazil
- National Institute of Hormones and Women’s Health, Ribeirão Preto, São Paulo, Brazil
| | - Michele Gomes Da Broi
- Department of Obstetrics and Gynecology, Ribeirão Preto Medical School, São Paulo University, Ribeirão Preto, Sao Paulo, Brazil
- National Institute of Hormones and Women’s Health, Ribeirão Preto, São Paulo, Brazil
| | - Paula Andrea Navarro
- Department of Obstetrics and Gynecology, Ribeirão Preto Medical School, São Paulo University, Ribeirão Preto, Sao Paulo, Brazil
- National Institute of Hormones and Women’s Health, Ribeirão Preto, São Paulo, Brazil
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Picinato MC, Martins WP, Giorgenon RC, Santos CKB, Ferriani RA, Navarro PAAS, de Sá Rosa-e-Silva ACJ. The impact of examining the meiotic spindle by polarization microscopy on assisted reproduction outcomes. Fertil Steril 2013; 101:379-84. [PMID: 24220701 DOI: 10.1016/j.fertnstert.2013.10.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2013] [Revised: 09/20/2013] [Accepted: 10/07/2013] [Indexed: 12/19/2022]
Abstract
OBJECTIVE To examine the effect of submitting oocytes to polarization microscopy (PM) before intracytoplasmic sperm injection (ICSI). DESIGN Retrospective observational study. SETTING University hospital in Brazil. PATIENT(S) Couples undergoing ICSI. INTERVENTION(S) PM before ICSI (PM group) compared with no PM before ICSI (No-PM group) MAIN OUTCOMES MEASURE(S) Fertilization and cleavage rates, formation of top-quality embryos (TQEs), and implantation, clinical pregnancy, miscarriage, and live-birth rates. RESULT(S) The PM group consisted of 1,000 consecutive oocytes from 201 couples submitted to PM during the year of 2008. The No-PM group consisted of 1,400 oocytes from 249 couples: 700 consecutive oocytes were retrieved before we started using PM and 700 consecutive oocytes were retrieved after we stopped using PM. In the PM group, we observed an increased fertilization rate (79.7% vs. 72.5%, PM group vs. No-PM group, respectively) but reduced cleavage rate (86.2% vs. 92.5%) and TQE formation (33.1% vs. 49.9%). Implantation (18.7% vs. 20.6%), clinical pregnancy (31.8% vs. 33.3%), miscarriage (21.9% vs. 15.7%), and live-birth (24.9% vs. 28.1%) rates were not significantly different between groups. CONCLUSION(S) Use of PM was associated with increased fertilization rate but reduced cleavage rate and TQE formation; no significant difference was observed for implantation, clinical pregnancy, or live-birth rates.
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Affiliation(s)
- Maria C Picinato
- Department of Gynecology and Obstetrics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Wellington P Martins
- Department of Gynecology and Obstetrics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil; National Institute of Science and Technology, National Counsel of Technological and Scientific Development, Hormones and Women's Health, Ribeirão Preto, São Paulo, Brazil; School of Ultrasonography and Medical Recycling of Ribeirão Preto, Ribeirão Preto, São Paulo, Brazil
| | - Roberta C Giorgenon
- Department of Gynecology and Obstetrics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Camila K B Santos
- Department of Gynecology and Obstetrics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Rui A Ferriani
- Department of Gynecology and Obstetrics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil; National Institute of Science and Technology, National Counsel of Technological and Scientific Development, Hormones and Women's Health, Ribeirão Preto, São Paulo, Brazil
| | - Paula A A S Navarro
- Department of Gynecology and Obstetrics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil; National Institute of Science and Technology, National Counsel of Technological and Scientific Development, Hormones and Women's Health, Ribeirão Preto, São Paulo, Brazil
| | - Ana C J de Sá Rosa-e-Silva
- Department of Gynecology and Obstetrics, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil; National Institute of Science and Technology, National Counsel of Technological and Scientific Development, Hormones and Women's Health, Ribeirão Preto, São Paulo, Brazil.
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Da Broi MG, Malvezzi H, Paz CCP, Ferriani RA, Navarro PAAS. Follicular fluid from infertile women with mild endometriosis may compromise the meiotic spindles of bovine metaphase II oocytes. Hum Reprod 2013; 29:315-23. [PMID: 24166595 DOI: 10.1093/humrep/det378] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
STUDY QUESTION What is the potential impact of follicular fluid (FF) from infertile women with mild endometriosis (ME) on oocyte quality, especially on nuclear maturation and the meiotic spindle? SUMMARY ANSWER FF from infertile women with ME may compromise nuclear maturation and the meiotic spindles of in vitro matured bovine oocytes. WHAT IS KNOWN ALREADY Controversial studies have suggested that impaired oocyte quality may be involved in the pathogenesis of endometriosis-related infertility. Moreover, some studies have demonstrated alterations in the composition of FF from infertile women with endometriosis. However, to date no study has evaluated the effect of FF from infertile women with ME on the genesis of meiotic oocyte anomalies. STUDY DESIGN, SIZE, DURATION We performed an experimental study. Samples of FF were obtained from February 2009 to February 2011 from 22 infertile women, 11 with ME and 11 with tubal or male factors of infertility (control group), who underwent ovarian stimulation for ICSI at our university IVF Unit. From March 2011 to February 2012 we performed in vitro maturation (IVM) experiments using immature bovine oocytes as described below. PARTICIPANTS/MATERIALS, SETTING, METHODS FF free of blood and containing a mature oocyte was obtained from 22 infertile women during oocyte retrieval for ICSI. Immature bovine oocytes underwent IVM in the absence of FF (No-FF) and in the presence of four concentrations (1, 5, 10 and 15%) of FF from infertile women without endometriosis (C-FF) and with ME (ME-FF). Eleven replicates were performed, each one using FF from a control patient and a patient with ME. Each FF sample was used in only one experiment. After 22-24 h of IVM, oocytes were denuded, fixed and immunostained for morphological visualization of microtubules and chromatin by confocal microscopy. MAIN RESULTS AND THE ROLE OF CHANCE A total of 1324 cumulus-oocyte complexes were matured in vitro. Of these, 1128 were fixed and 1048 were analyzed by confocal microscopy. The percentage of meiotically normal oocytes was significantly higher for oocytes that underwent IVM in the absence of FF (No-FF; 76.5%) and in the presence of 1% (80.9%), 5% (76.6%), 10% (75%) and 15% (76.2%) C-FF than in oocytes that underwent IVM in the presence of 1% (44.4%), 5% (36.7%), 10% (45.5%) and 15% (51.2%) ME-FF (P < 0.01). No differences were observed among FF concentrations within each group. When the four concentrations from each group were pooled, the number of oocytes in metaphase I stage was significantly higher in the ME-FF (50 oocytes) than in the C-FF (29 oocytes) group and the percentage of meiotic abnormalities was significantly higher when oocytes were matured with ME-FF (55.8%) than with C-FF (23.1%), P < 0.01. LIMITATIONS, REASONS FOR CAUTION Owing to the strict selection criteria for FF donors, this study had a small sample size (11 cases and 11 controls), and thus further investigations using a large cohort of patients are needed to confirm these results. In addition, data obtained from studies using animal models may not necessarily be extrapolated to humans and studies evaluating in vivo matured oocytes from infertile women with ME are important to confirm our results. WIDER IMPLICATIONS OF THE FINDINGS Our results open new insights into the pathogenic mechanisms of infertility related to mild endometriosis, suggesting that FF from infertile women with mild endometriosis may be involved in the worsening of oocyte quality of these women. STUDY FUNDING/COMPETING INTEREST(S) This study was supported by the National Council for Scientific and Technological Development (CNPq), Brazil. The authors declare no conflicts of interest.
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Affiliation(s)
- M G Da Broi
- Human Reproduction Division, Department of Gynecology and Obstetrics, Ribeirão Preto School of Medicine, University of São Paulo, Ribeirão Preto, SP, Brazil
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Velthut A, Zilmer M, Zilmer K, Kaart T, Karro H, Salumets A. Elevated blood plasma antioxidant status is favourable for achieving IVF/ICSI pregnancy. Reprod Biomed Online 2013; 26:345-52. [PMID: 23415995 DOI: 10.1016/j.rbmo.2012.12.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Revised: 11/22/2012] [Accepted: 12/19/2012] [Indexed: 11/17/2022]
Abstract
The aim of the study was to determine the roles of intrafollicular and systemic oxidative stress and antioxidant response in ovarian stimulation and intracytoplasmic sperm injection (ICSI) outcomes. For this purpose, 102 ICSI patients undergoing controlled ovarian stimulation were enrolled and samples were collected on the day of follicle puncture. Total peroxide (TPX) concentrations and total antioxidant response (TAR) were measured in follicular fluid and blood plasma, and an oxidative stress index (OSI) was calculated based on these two parameters. Urinary concentrations of 8-iso-prostaglandin F2a (F2IsoP) were measured. Elevated intrafollicular oxidative stress was positively correlated with ovarian stimulation outcome: less FSH per retrieved oocyte was used, more oocytes were collected and higher serum oestradiol concentrations were measured in patients with higher follicular OSI. However, high urinary F2IsoP related to lower embryo quality and F2IsoP was also elevated in smoking patients. Patients with endometriosis had lower follicular antioxidant status. Most importantly, higher systemic blood TAR was significantly favourable for achieving clinical pregnancy (P=0.03). In conclusion, the findings suggest clear associations between oxidative stress, antioxidant status and several aspects of ovarian stimulation and IVF/ICSI outcome, including pregnancy rate. Several oxygen-dependent biochemical reactions produce reactive oxygen species as by-products that may eventually lead to oxidative stress, which is detrimental to cells and tissues. Total antioxidant status, on the other hand, comprises several agents that balance the excess of these reactive oxygen species and reduce potential damage to the body. The aim of the current work was to study this balance in 102 patients participating in an ICSI programme and to examine the degree to which total peroxide content and antioxidant status influence infertility and pregnancy outcome. During the study, several tests were performed to characterize oxidative stress levels in ovarian follicular fluid, blood plasma and urine. We found a significantly higher oxidative stress environment in the ovary when compared with blood plasma. This suggests a prominent role of oxidative stress in the ovaries of these patients. The elevated oxidative stress levels were correlated to a higher number of oocytes that could be obtained via the procedure and to a lower amount of FSH needed to mature the oocytes, suggesting that oxidative stress, to some degree, is favourable for hormone stimulation outcome. A high level of lipid peroxidation products in the urine, another marker of oxidative stress, was observed in smokers and this marker was elevated in patients with embryos that had lower developmental potential. A higher overall antioxidant status in blood plasma was advantageous for achieving pregnancy.
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Affiliation(s)
- Agne Velthut
- Centre for Biology of Integrated Systems, Tallinn University of Technology, Tallinn, Estonia.
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Spanel-Borowski K, Nowicki M, Borlak J, Trapphoff T, Eichenlaub-Ritter U. Endoplasmic Reticulum-Derived Multilamellar Bodies in Oocytes of Mouse Follicle Cultures under Oxidized Low-Density Lipoprotein Treatment. Cells Tissues Organs 2013; 197:77-88. [DOI: 10.1159/000340039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2012] [Indexed: 11/19/2022] Open
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Demant M, Trapphoff T, Fröhlich T, Arnold GJ, Eichenlaub-Ritter U. Vitrification at the pre-antral stage transiently alters inner mitochondrial membrane potential but proteome of in vitro grown and matured mouse oocytes appears unaffected. Hum Reprod 2012; 27:1096-111. [PMID: 22258663 DOI: 10.1093/humrep/der453] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
BACKGROUND Vitrification is a fast and effective method to cryopreserve ovarian tissue, but it might influence mitochondrial activity and affect gene expression to cause persistent alterations in the proteome of oocytes that grow and mature following cryopreservation. METHODS In part one of the study, the inner mitochondrial membrane potential (Ψ(mit)) of JC-1 stained oocytes from control and CryoTop vitrified pre-antral follicles was analyzed by confocal microscopy at Day 0, or after culture of follicles for 1 or 12 days. In part two, proteins of in vivo grown germinal vesicle (GV) oocytes were subjected to proteome analysis by SDS polyacrylamide gel electrophoresis, tryptic in-gel digestion of gel slices, and one-dimensional-nano-liquid chromatography of peptides on a multi-dimensional-nano-liquid chromatography system followed by mass spectrometry (LC-MS/MS) and Uniprot Gene Ontology (GO) analysis. In part three, samples containing the protein amount of 40 GV and metaphase II (MII) oocytes, respectively, from control and vitrified pre-antral follicles cultured for 12 or 13 days were subjected to 2D DIGE saturation labeling and separated by isoelectric focusing and SDS gel electrophoresis (2D DIGE), followed by DeCyder(Tm) analysis of spot patterns in three independent biological replicates. Statistical and hierarchical cluster analysis was employed to compare control and vitrified groups. RESULTS (i) Mitochondrial inner membrane potential differs significantly between control and vitrified GV oocytes at Day 0 and Day 1, but is similar at Day 12 of culture. (ii) LC-MS/MS analysis of SDS gel fractionated protein lysates of 988 mouse GV oocytes revealed identification of 1123 different proteins with a false discovery rate of <1%. GO analysis assigned 811 proteins to the 'biological process' subset. Thirty-five percent of the proteins corresponded to metabolic processes, about 15% to mitochondrion and transport, each, and close to 8% to oxidation-reduction processes. (iii) From the 2D-saturation DIGE analysis 1891 matched spots for GV-stage and 1718 for MII oocyte proteins were detected and the related protein abundances in vitrified and control oocytes were quantified. None of the spots was significantly altered in intensity, and hierarchical cluster analysis as well as histograms of p and q values suggest that vitrification at the pre-antral stage does not significantly alter the proteome of GV or MII oocytes compared with controls. CONCLUSIONS Vitrification appears to be associated with a significant transient increase in Ψ(mit) in oocyte mitochondria, which disappears when oocyte/cumulus cell apposition is restored upon development to the antral stage. The nano-LC-MS/MS analysis of low numbers of oocytes is useful to obtain information on relevant biological signaling pathways based on protein identifications. For quantitative comparisons, saturation 2D DIGE analysis is superior to LC-MS/MS due to its high sensitivity in cases where the biological material is very limited. Genetic background, age of the female, and/or stimulation protocol appear to influence the proteome pattern. However, the quantitative 2D DIGE approach provides evidence that vitrification does not affect the oocyte proteome after recovery from transient loss of cell-cell interactions, in vitro growth and in vitro maturation under tested conditions. Therefore, transient changes in mitochondrial activity by vitrification do not appear causal to persistent alterations in the mitochondrial or overall oocyte proteome.
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Affiliation(s)
- Myriam Demant
- Laboratory for Functional Genome Analysis, Gene Center, Ludwig-Maximilians-Universität, München 81377, Germany
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Abstract
Male factor accounts for almost 50% cases of infertility. The exact mechanism of sperm dysfunction is not known in many cases. Extensive research in the last decade has led to the identification of free radicals (reactive oxygen species) as mediators of sperm dysfunction in both specific diagnoses and idiopathic cases of male infertility. Elevated levels of reactive oxygen species are seen in up to 30-80% of men with male infertility. The role of free radicals has been studied extensively in the process of human reproduction. We know now that a certain level of free radicals is necessary for normal sperm function, whereas an excessive level of free radicals can cause detrimental effect on sperm function and subsequent fertilisation and offspring health. Oxidative stress develops when there is an imbalance between generation of free radicals and scavenging capacity of anti-oxidants in reproductive tract. Oxidative stress has been shown to affect both standard semen parameters and fertilising capacity. In addition, high levels of free radicals have been associated with lack of or poor fertility outcome after natural conception or assisted reproduction. Diagnostic techniques to quantify free radicals in infertile patients can assist physicians treating patients with infertility to plan for proper treatment strategies. In vivo anti-oxidants can be used against oxidative stress in male reproductive tract. Supplementation of in vitro anti-oxidants can help prevent the oxidative stress during sperm preparation techniques in assisted reproduction.
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Affiliation(s)
- Ashok Agarwal
- Centre for Advanced Research in Human, Reproduction, Infertility, and Sexual Function, Glickman Urological Institute, The Cleveland Clinic Foundation, 9500 Euclid Avenue, Desk A19.1, Cleveland, OH 44195, USA.
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Roig I, Brieno-Enriquez MA, Caldes MG. Meiosis in a bottle: new approaches to overcome Mammalian meiocyte study limitations. Genes (Basel) 2011; 2:152-68. [PMID: 24710142 PMCID: PMC3924833 DOI: 10.3390/genes2010152] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Revised: 01/13/2011] [Accepted: 01/19/2011] [Indexed: 11/25/2022] Open
Abstract
The study of meiosis is limited because of the intrinsic nature of gametogenesis in mammals. One way to overcome these limitations would be the use of culture systems that would allow meiotic progression in vitro. There have been some attempts to culture mammalian meiocytes in recent years. In this review we will summarize all the efforts to-date in order to culture mammalian sperm and oocyte precursor cells.
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Affiliation(s)
- Ignasi Roig
- Cytology and Histology Unit, Cell Biology, Physiology and Immunology Department, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain.
| | - Miguel Angel Brieno-Enriquez
- Cell Biology and Medical Genetics Unit, Cell Biology, Physiology and Immunology Department, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain.
| | - Montserrat Garcia Caldes
- Cell Biology and Medical Genetics Unit, Cell Biology, Physiology and Immunology Department, Universitat Autònoma de Barcelona, 08193 Cerdanyola del Vallès, Barcelona, Spain.
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Trapphoff T, El Hajj N, Zechner U, Haaf T, Eichenlaub-Ritter U. DNA integrity, growth pattern, spindle formation, chromosomal constitution and imprinting patterns of mouse oocytes from vitrified pre-antral follicles. Hum Reprod 2010; 25:3025-42. [DOI: 10.1093/humrep/deq278] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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Eichenlaub-Ritter U, Wieczorek M, Lüke S, Seidel T. Age related changes in mitochondrial function and new approaches to study redox regulation in mammalian oocytes in response to age or maturation conditions. Mitochondrion 2010; 11:783-96. [PMID: 20817047 DOI: 10.1016/j.mito.2010.08.011] [Citation(s) in RCA: 145] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2010] [Accepted: 08/26/2010] [Indexed: 12/26/2022]
Abstract
Mammalian oocytes are long-lived cells in the human body. They initiate meiosis already in the embryonic ovary, arrest meiotically for long periods in dictyate stage, and resume meiosis only after extensive growth and a surge of luteinizing hormone which mediates signaling events that overcome meiotic arrest. Few mitochondria are initially present in the primordial germ cells while there are mitogenesis and structural and functional differentiation and stage-specific formation of functionally diverse domains of mitochondria during oogenesis. Mitochondria are most prominent cell organelles in oocytes and their activities appear essential for normal spindle formation and chromosome segregation, and they are one of the most important maternal contributions to early embryogenesis. Dysfunctional mitochondria are discussed as major factor in predisposition to chromosomal nondisjunction during first and second meiotic division and mitotic errors in embryos, and in reduced quality and developmental potential of aged oocytes and embryos. Several lines of evidence suggest that damage by oxidative stress/reactive oxygen species in dependence of age, altered antioxidative defence and/or altered environment and bi-directional signaling between oocyte and the somatic cells in the follicle contribute to reduced quality of oocytes and blocked or aberrant development of embryos after fertilization. The review provides an overview of mitogenesis during oogenesis and some recent data on oxidative defence systems in mammalian oocytes, and on age-related changes as well as novel approaches to study redox regulation in mitochondria and ooplasm. The latter may provide new insights into age-, environment- and cryopreservation-induced stress and mitochondrial dysfunction in oocytes and embryos.
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Affiliation(s)
- U Eichenlaub-Ritter
- University of Bielefeld, Faculty of Biology, Gene Technology/Microbiology, Bielefeld, Germany.
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Vieira RC, Barcelos ID, Ferreira EM, Martins WP, Ferriani RA, Navarro PA. Spindle and chromosome configurations of in vitro-matured oocytes from polycystic ovary syndrome and ovulatory infertile women: a pilot study. J Assist Reprod Genet 2010; 28:15-21. [PMID: 20821044 DOI: 10.1007/s10815-010-9475-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2010] [Accepted: 08/23/2010] [Indexed: 11/28/2022] Open
Abstract
PURPOSE To evaluate the meiotic spindle and chromosomal distribution of in vitro-matured oocytes from infertile nonobese women with PCOS and male or tubal causes of infertility (controls), and to compare in vitro maturation (IVM) rates between groups. METHODS Seventy four patients (26 with PCOS and 48 controls) undergoing stimulated cycles of oocyte retrieval for ICSI were selected prospectively. Thirteen PCOS patients and 27 controls had immature oocytes retrieved submitted to IVM. After IVM, oocytes showing extrusion of the first polar body were fixed and processed for evaluation of the meiotic spindle and chromosome distribution by immunofluorescence microscopy. RESULTS There were no differences between PCOS and control groups with respect to IVM rates (50.0% and 42.9%, respectively) nor the percentage of meiotic abnormalities in metaphase II oocytes (35.3% and 25%, respectively). CONCLUSIONS In vitro-matured oocytes obtained from stimulated cycles of nonobese PCOS did not have an increased ratio of meiotic abnormalities.
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Affiliation(s)
- Rodolpho C Vieira
- Departamento de Ginecologia e Obstetrícia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, São Paulo, Brazil
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Follikulogenese und In-vitro-Maturation aus humanem Ovargewebe. GYNAKOLOGISCHE ENDOKRINOLOGIE 2010. [DOI: 10.1007/s10304-010-0363-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Zhang X, Miao Y, Zhao JG, Spate L, Bennett MW, Murphy CN, Schatten H, Prather RS. Porcine oocytes denuded before maturation can develop to the blastocyst stage if provided a cumulous cell-derived coculture system1. J Anim Sci 2010; 88:2604-10. [DOI: 10.2527/jas.2009-2714] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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Heise MK, Koepsel R, McGee EA, Russell AJ. Dynamic oxygen enhances oocyte maturation in long-term follicle culture. Tissue Eng Part C Methods 2009; 15:323-32. [PMID: 19552585 PMCID: PMC2865977 DOI: 10.1089/ten.tec.2007.0418] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2007] [Accepted: 11/12/2008] [Indexed: 11/12/2022] Open
Abstract
Traditionally, follicles have been grown in standard incubators with atmospheric oxygen concentration. However, preantral follicles exist in the avascular cortex of the ovary. This study examines the effectiveness of an oxygen delivery protocol that more closely mimics the in vivo environment of the ovary on oocyte viability, maturation, parthenogenetic activation, and fertilization from in vitro cultured rat preantral follicles. Of 54 oocytes cultured in the dynamic oxygen environment, 35 were viable while only 22 of 50 oocytes cultured within an ambient oxygen concentration remained viable (p < 0.05). Germinal vesicle breakdown was observed in 56% of oocytes from the dynamic oxygen group compared to 30% of oocytes from the ambient oxygen group (p < 0.05). Parthenogenetic activation was observed in a significant number of oocytes from the dynamic oxygen group, while none of the oocytes from the ambient oxygen group activated (p < 0.05). However, the proportions of oocytes from the dynamic oxygen group that remained viable underwent germinal vesicle breakdown, and activated were still significantly less than those from the in vivo control group (p < 0.05). Fertilization of the oocytes from the dynamic oxygen group was confirmed through a successful trial of intracytoplasmic sperm injection.
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Affiliation(s)
- Matthew K. Heise
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Richard Koepsel
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Elizabeth A. McGee
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Virginia Commonwealth University, Richmond, Virginia
| | - Alan J. Russell
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
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Combelles CMH, Gupta S, Agarwal A. Could oxidative stress influence the in-vitro maturation of oocytes? Reprod Biomed Online 2009; 18:864-80. [PMID: 19490793 DOI: 10.1016/s1472-6483(10)60038-7] [Citation(s) in RCA: 193] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
In the efforts aimed at improving the quality of in-vitro-matured human oocytes, the dynamic balance and roles of pro-/antioxidants merit further consideration. In-vitro maturation (IVM) is emerging as a popular technology at the forefront of fertility treatment and preservation. However, standard in-vitro culture conditions exert oxidative stress or an imbalance between oxidants and antioxidants. Reactive oxygen species (ROS) are oxygen-derived molecules formed as intermediary products of cellular metabolism. By acting as powerful oxidants, ROS can oxidatively modify any molecule, resulting in structural and functional alterations. ROS are neutralized by an elaborate defence system consisting of enzymatic and nonenzymatic antioxidants. This review captures the inherent and external factors that may modulate the oxidative stress status of oocytes. It discusses the suspected impacts of oxidative stress on the gamut of events associated with IVM, including prematuration arrest, meiotic progression, chromosomal segregation, cytoskeletal architecture and gene expression. In-vivo and in-vitro strategies that may overcome the potential influences of oxidative stress on oocyte IVM are presented. Future studies profiling the oxidative stress status of the oocyte may permit not only the formulation of a superior IVM medium that maintains an adequate pro-/antioxidant balance, but also the identification of predictors of oocyte quality.
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