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Martinez CA, Rizos D, Rodriguez-Martinez H, Funahashi H. Oocyte-cumulus cells crosstalk: New comparative insights. Theriogenology 2023; 205:87-93. [PMID: 37105091 DOI: 10.1016/j.theriogenology.2023.04.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 04/08/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023]
Abstract
Mammalian follicles are constituted of a complex structure composed of several layers of granulosa cells surrounding the oocyte and of theca cells that reside beneath its basement membrane. During folliculogenesis, granulosa cells separate into two anatomically and functionally distinct sub-types; the mural cells lining the follicle wall and the oocyte-surrounding cumulus cells, i.e. those in intimate metabolic contact with the oocyte. The cumulus cells connecting with the oocyte have trans-zonal cytoplasmic projections which, penetrating the zona pellucida, form the cumulus-oocyte complex. The connections through gap junctions allow the transfer of small molecules between oocyte and cumulus cells, such as ions, metabolites, and amino acids necessary for oocyte growth, as well as small regulatory molecules that control oocyte development. The bi-directional communication between the oocyte and cumulus cells is crucial for the development and functions of both cell types. Our current knowledge of the relationship between the oocyte and its surrounding cumulus cells continues to change as we gain a greater understanding of factors regulating oocyte development and folliculogenesis. This review will mainly focus on the reciprocal interaction between oocytes and cumulus cells during the latter stages of follicle development i.e. through antral development to periovulatory events including oocyte maturation, expansion, and degradation of the cumulus matrix.
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Affiliation(s)
- Cristina A Martinez
- Department of Animal Science, Okayama University, Okayama, Japan; Department of Animal Reproduction, INIA-CSIC, Madrid, Spain; Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden.
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Báez F, Gómez B, de Brun V, Rodríguez-Osorio N, Viñoles C. Effect of Ethanol on Parthenogenetic Activation and α-Tocopherol Supplementation during In Vitro Maturation on Developmental Competence of Summer-Collected Bovine Oocytes. Curr Issues Mol Biol 2021; 43:2253-2265. [PMID: 34940132 PMCID: PMC8929142 DOI: 10.3390/cimb43030158] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/13/2021] [Accepted: 12/13/2021] [Indexed: 12/27/2022] Open
Abstract
The use of α-tocopherol during in vitro maturation (IVM) is an alternative to minimize the adverse effects of heat stress on oocyte competence. However, α-tocopherol is diluted in ethanol, which can induce oocyte parthenogenetic activation (PA). This study aimed to evaluate the role of ethanol concentration on PA and the effect of α-tocopherol supplementation during IVM on the developmental competence and the expression of key genes in blastocysts derived from summer-collected oocytes. All in vitro embryo production was conducted at 5% O2, 5% CO2 at 38.5 °C. Experiment 1: oocytes were cultured with or without 0.05% ethanol. As positive PA control matured oocytes were subjected to 3% or 7% ethanol for 7 min. Oocytes from all groups were placed in fertilization medium (22 h) and culture medium (9 days). Ethanol at 0.05% during IVM did not induce oocyte PA, however, 3% and 7% ethanol were effective parthenogenetic inductors. Experiment 2: oocytes were cultured in maturation medium supplemented with 0, 50, 100 and 200 μM α-tocopherol, diluted in 0.05% ethanol. After in vitro fertilization and embryo culture, we assessed blastocyst apoptotic index and the transcription of a panel of genes. The results showed that supplementation with 100 μM α-tocopherol reduced apoptotic index and increased the expression of SOD2. In conclusion, 100 μM α-tocopherol, diluted in 0.05% ethanol, can be used during IVM to embryonic quality.
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Affiliation(s)
- Francisco Báez
- Instituto Superior de la Carne, Centro Universitario Regional Noreste, Universidad de la República, Ruta 5, km 386, Tacuarembó 45000, Uruguay;
- Correspondence:
| | - Belén Gómez
- Instituto Superior de la Carne, Centro Universitario Regional Noreste, Universidad de la República, Ruta 5, km 386, Tacuarembó 45000, Uruguay;
| | - Victoria de Brun
- Laboratorio de Endocrinología y Metabolismo Animal, Universidad de la República, Laspalces 1620, Montevideo 45000, Uruguay;
| | - Nélida Rodríguez-Osorio
- Unidad de Genómica y Bioinformática, Departamento de Ciencias Biológicas, Centro Universitario Regional Litoral Norte, Universidad de la República, Rivera 1350, Salto 50000, Uruguay;
| | - Carolina Viñoles
- Centro de Salud Reproductiva de Rumiantes en Sistemas Agroforestales, Centro Universitario Regional Noreste, Universidad de la República, Ruta 26, km 408, Cerro Largo 37000, Uruguay;
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Enhancing in vitro oocyte maturation competence and embryo development in farm animals: roles of vitamin-based antioxidants – a review. ANNALS OF ANIMAL SCIENCE 2021. [DOI: 10.2478/aoas-2021-0054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Oocyte/embryo in vitro culture is one of the most important assisted reproductive technologies used as a tool for maintaining genetic resources biodiversity and the inheritance of valuable genetic resources through generations. The success of such processes affects the final goal of the in vitro culture, getting viable and healthy offspring. In common in vitro oocyte maturation and/or embryo development techniques, the development of oocytes/embryos is carried out at 5% carbon dioxide and roughly 20% atmosphere-borne oxygen ratios in cell culture incubators due to their reduced cost in comparison with low atmospheric oxygen-tension incubators. These conditions are usually accompanying by the emergence of reactive oxygen species (ROS), which can extremely damage cell membrane integrity and other vital cellular organelles, as well as genetic material. The present review mainly focuses on the antioxidant roles of different vitamins on in vitro oocyte maturation competence and embryo development in farm animals. Because, the conditions of in vitro embryo production (IVEP) are usually accompanying by the emergence of reactive oxygen species (ROS), which can extremely damage cell membrane integrity and other vital cellular organelles as well as genetic material. The use of antioxidant agents may prevent the extreme augmentation of ROS generation and enhance in vitro matured oocyte competence and embryo development. Therefore, this review aimed to provide an updated outline of the impact of antioxidant vitamin (Vit) supplementations during in vitro maturation (IVM) and in vitro fertilization (IVF) on oocyte maturation and consequent embryo development, in various domestic animal species. Thus, the enrichment of the culture media with antioxidant agents may prevent and neutralize the extreme augmentation of ROS generation and enhance the in vitro embryo production (IVEP) outcomes.
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Fang F, Wang X, Li Z, Ni K, Xiong C. Epigenetic regulation of mRNA N6-methyladenosine modifications in mammalian gametogenesis. Mol Hum Reprod 2021; 27:6212059. [PMID: 33823008 DOI: 10.1093/molehr/gaab025] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 03/12/2021] [Indexed: 12/20/2022] Open
Abstract
N6-methyladenosine (m6A) is the most prevalent epigenetic modification of mRNAs and broadly influences various biological processes by regulating post-transcriptional gene expression in eukaryotes. The reversible m6A modification is catalyzed by methyltransferases, METTL3 and METTL14 (writers), removed by the demethylases FTO and ALKBH5 (erasers) and recognized by m6A-binding proteins, namely the YTH domain-containing family of proteins (readers). Both m6A modification and the related enzymes are involved in the regulation of normal gametogenesis and embryonic development in many species. Recent studies showed that loss of m6A compromises gamete maturation, sex hormone synthesis, fertility and early embryonic development. In this review, we have summarized the most recent findings on the role of mRNA m6A modification in mammalian gametogenesis to emphasize the epigenetic regulation of mRNA in the reproductive system.
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Affiliation(s)
- Fang Fang
- Department of Obstetrics and Gynecology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Xiao Wang
- Department of Obstetrics and Gynecology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Zili Li
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ke Ni
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan 430060, China
| | - Chengliang Xiong
- Institute of Reproductive Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.,Center of Reproductive Medicine, Wuhan Tongji Reproductive Medicine Hospital, Wuhan 430013, China
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El-Sanea AM, Abdoon ASS, Kandil OM, El-Toukhy NE, El-Maaty AMA, Ahmed HH. Effect of oxygen tension and antioxidants on the developmental competence of buffalo oocytes cultured in vitro. Vet World 2021; 14:78-84. [PMID: 33642789 PMCID: PMC7896883 DOI: 10.14202/vetworld.2021.78-84] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 11/24/2020] [Indexed: 11/24/2022] Open
Abstract
Aim: Oxidative stress (OS) is one of the major disruptors of oocyte developmental competence, which appears due to the imbalance between the production and neutralization of reactive oxygen species (ROS). Materials and Methods: In Experiment 1, buffalo oocytes were in vitro matured, fertilized, and cultured at 38.5°C under 5% CO2 + 20% O2 in standard CO2 incubator (OS) or under 5% O2 + 5% CO2 + 90% N2 (Multi-gas incubator, low O2). In Experiment 2, buffalo cumulus oocytes complexes (COCs) were matured in Basic maturation medium (BMM) composed of TCM199+ 10% FCS+ 10 µg/ml FSH+ 50 µg/ml gentamicin (control group) or in BMM supplemented with 50 μM ascorbic acid (ascorbic acid group) or 3.0 mM glutathione (glutathione group) or 10-5 M melatonin (melatonin group) and cultured at 38.5°C under 20% O2 for 24 h. Matured buffalo oocytes in control, ascorbic acid, or melatonin groups were fertilized and zygotes were cultured for 8 days under the same conditions. Results: In both experiments, maturation, cleavage, and blastocyst rates were recorded. Results showed that culture of buffalo oocytes under low O2 (5% O2) significantly increased maturation, cleavage, and blastocyst rates (p<0.05). Meanwhile, under 20% O2, addition of 10-5 M melatonin or 50 μM ascorbic acid to in vitro maturation (IVM) medium significantly improved cumulus cell expansion, nuclear maturation rates of buffalo oocytes (p<0.05), and increased cleavage and blastocyst rates (p<0.05). Conclusion: About 5% O2 is the optimum condition for in vitro production of buffalo embryos, and addition of 10-5 M melatonin to IVM medium for oocytes cultured under 20% O2 could alleviate the adverse effect of high oxygen tension and increased embryo yield.
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Affiliation(s)
- Amro M El-Sanea
- Department of Animal Reproduction and Artificial Insemination, Veterinary Research Division, National Research Centre, Tahrir St., Dokki 12622, Cairo, Egypt
| | - Ahmed Sabry S Abdoon
- Department of Animal Reproduction and Artificial Insemination, Veterinary Research Division, National Research Centre, Tahrir St., Dokki 12622, Cairo, Egypt
| | - Omaima M Kandil
- Department of Animal Reproduction and Artificial Insemination, Veterinary Research Division, National Research Centre, Tahrir St., Dokki 12622, Cairo, Egypt
| | - Nahed E El-Toukhy
- Department of Animal Physiology, Faculty of Veterinary Medicine, Cairo University, Giza Square 12211, Cairo, Egypt
| | - Amal M Abo El-Maaty
- Department of Animal Reproduction and Artificial Insemination, Veterinary Research Division, National Research Centre, Tahrir St., Dokki 12622, Cairo, Egypt
| | - Hodallah H Ahmed
- Department of Animal Physiology, Faculty of Veterinary Medicine, Cairo University, Giza Square 12211, Cairo, Egypt
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Zhang X, Zhou C, Li W, Li J, Wu W, Tao J, Liu H. Vitamin C Protects Porcine Oocytes From Microcystin-LR Toxicity During Maturation. Front Cell Dev Biol 2020; 8:582715. [PMID: 33134299 PMCID: PMC7578366 DOI: 10.3389/fcell.2020.582715] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 09/18/2020] [Indexed: 12/19/2022] Open
Abstract
Microcystin-leucine arginine (MC-LR) is the most toxic cyanotoxin found in water bodies. Microcystins are produced as secondary products of cyanobacteria metabolism. They have a stable structure, and can bioaccumulate in living organisms. Humans and livestock who drink fresh water containing MC-LR can be poisoned. However, few studies have reported the effects of MC-LR exposure on livestock or human reproduction. In this study, we used porcine oocytes as a model to explore the effects of MC-LR on oocyte maturation, and studied the impact of vitamin C (VC) administration on MC-LR-induced meiosis defects. Exposure to MC-LR significantly restricted cumulus cell expansion and decreased first polar body extrusion. Further studies showed that MC-LR exposure led to meiosis arrest by disturbing cytoskeleton dynamics with MC-LR exposed oocytes displaying aberrant spindle organization, low levels of acetylate α-tubulin, and disturbed actin polymerization. Additionally, MC-LR exposure impaired cytoplasmic maturation by inducing mitochondria dysfunction. Moreover, MC-LR also produced abnormal epigenetic modifications, and induced high levels of oxidative stress, caused DNA damage and early apoptosis. The administration of VC provided partial protection from all of the defects observed in oocytes exposed to MC-LR. These results demonstrate that MC-LR has a toxic effect on oocyte meiosis through mitochondrial dysfunction-induced ROS, DNA damage and early apoptosis. Supplementation of VC is able to protect against MC-LR-induced oocyte damage and represents a potential therapeutic strategy to improve the quality of MC-LR-exposed oocytes.
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Affiliation(s)
- Xue Zhang
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Changyin Zhou
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Weijian Li
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Juan Li
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Wangjun Wu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Jingli Tao
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
| | - Honglin Liu
- Department of Animal Genetics, Breeding and Reproduction, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, China
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7
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In vitro Production of Porcine Embryos: Current Status and Possibilities – A Review. ANNALS OF ANIMAL SCIENCE 2020. [DOI: 10.2478/aoas-2020-0030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Abstract
This paper presents the current possibilities, state of knowledge and prospects of in vitro production (IVP) of pig embryos, which consists of in vitro oocyte maturation, in vitro fertilization and in vitro embryo culture. In pigs, oocyte maturation is one of the most important stages in the embryo IVP process. It determines the oocyte’s fertilization ability as well as its embryonic development. Through many research studies of the proper selection of oocytes and appropriate maturation medium composition (especially the addition of various supplements), the in vitro maturation of pig oocytes has been significantly improved. Recent studies have demonstrated that modifications of the diluents and in vitro fertilization media can reduce polyspermy. Furthermore, several adjustments of the porcine culture media with the addition of some supplements have enhanced the embryo quality and developmental competence. These updates show the progress of IVP in pigs that has been achieved; however, many problems remain unsolved.
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von Mengden L, Klamt F, Smitz J. Redox Biology of Human Cumulus Cells: Basic Concepts, Impact on Oocyte Quality, and Potential Clinical Use. Antioxid Redox Signal 2020; 32:522-535. [PMID: 31861967 PMCID: PMC7038817 DOI: 10.1089/ars.2019.7984] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 12/19/2019] [Indexed: 12/15/2022]
Abstract
Significance: Four decades have passed since the first successful human embryo conceived from a fertilization in vitro. Despite all advances, success rates in assisted reproduction techniques still remain unsatisfactory and it is well established that oxidative stress can be one of the major factors causing failure in in vitro fertilization (IVF) techniques. Recent Advances: In the past years, researchers have been shown details of the supportive role CCs play along oocyte maturation, development, and fertilization processes. Regarding redox metabolism, it is now evident that the synergism between gamete and somatic CCs is fundamental to further support a healthy embryo, since the oocyte lacks several defense mechanisms that are provided by the CCs. Critical Issues: There are many sources of reactive oxygen species (ROS) in the female reproductive tract in vivo that can be exacerbated (or aggravated) by pathological features. While an imbalance between ROS and antioxidants can result in oxidative damage, physiological levels of ROS are essential for oocyte maturation, ovulation, and early embryonic growth where they act as signaling molecules. At the event of an assisted reproduction procedure, the cumulus/oophorus complex is exposed to additional sources of oxidative stress in vitro. The cumulus cells (CCs) play essential roles in protecting the oocytes from oxidative damage. Future Directions: More studies are needed to elucidate redox biology in human CCs and oocyte. Also, randomized controlled trials will identify possible benefits of in vivo or in vitro administration of antioxidants for patients seeking IVF procedure.
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Affiliation(s)
- Lucia von Mengden
- Laboratory of Cellular Biochemistry, Department of Biochemistry, ICBS/Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
- National Institutes of Science and Technology—Translational Medicine (INCT-TM), Porto Alegre, Brazil
- Postgraduate Program: Biochemistry, Biochemistry Department, ICBS, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Fabio Klamt
- Laboratory of Cellular Biochemistry, Department of Biochemistry, ICBS/Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
- National Institutes of Science and Technology—Translational Medicine (INCT-TM), Porto Alegre, Brazil
- Postgraduate Program: Biochemistry, Biochemistry Department, ICBS, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Johan Smitz
- Follicle Biology Unit, Faculty of Medicine & Pharmacy, Vrije Universiteit Brussel, Brussels, Belgium
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Ascorbic acid induces global epigenetic reprogramming to promote meiotic maturation and developmental competence of porcine oocytes. Sci Rep 2018; 8:6132. [PMID: 29666467 PMCID: PMC5904140 DOI: 10.1038/s41598-018-24395-y] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 04/03/2018] [Indexed: 01/01/2023] Open
Abstract
L-ascorbic acid (Vitamin C) can enhance the meiotic maturation and developmental competence of porcine oocytes, but the underlying molecular mechanism remains obscure. Here we show the role of ascorbic acid in regulating epigenetic status of both nucleic acids and chromatin to promote oocyte maturation and development in pigs. Supplementation of 250 μM L-ascorbic acid 2-phosphate sesquimagnesium salt hydrate (AA2P) during in vitro maturation significantly enhanced the nuclear maturation (as indicated by higher rate of first polar body extrusion and increased Bmp15 mRNA level), reduced level of reactive oxygen species, and promoted developmental potency (higher cleavage and blastocyst rates of parthenotes, and decreased Bax and Caspase3 mRNA levels in blastocysts) of pig oocytes. AA2P treatment caused methylation erasure in mature oocytes on nucleic acids (5-methylcytosine (5 mC) and N 6 -methyladenosine (m6A)) and histones (Histone H3 trimethylations at lysines 27, H3K27me3), but establishment of histone H3 trimethylations at lysines 4 (H3K4me3) and 36 (H3K36me3). During the global methylation reprogramming process, levels of TET2 (mRNA and protein) and Dnmt3b (mRNA) were significantly elevated, but simultaneously DNMT3A (mRNA and protein), and also Hif-1α, Hif-2α, Tet3, Mettl14, Kdm5b and Eed (mRNA) were significantly inhibited. Our findings support that ascorbic acid can reprogram the methylation status of not only DNA and histone, but also RNA, to improve pig oocyte maturation and developmental competence.
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Arias-Álvarez M, García-García RM, López-Tello J, Rebollar PG, Gutiérrez-Adán A, Lorenzo PL. α-Tocopherol modifies the expression of genes related to oxidative stress and apoptosis during in vitro maturation and enhances the developmental competence of rabbit oocytes. Reprod Fertil Dev 2018; 30:1728-1738. [DOI: 10.1071/rd17525] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 05/30/2018] [Indexed: 01/09/2023] Open
Abstract
The developmental competence of in vitro maturation (IVM) oocytes can be enhanced by antioxidant agents. The present study investigated, for the first time in the rabbit model, the effect of adding α-tocopherol (0, 100, 200 and 400 µM) during IVM on putative transcripts involved in antioxidant defence (superoxide dismutase 2, mitochondrial (SOD2), glutathione peroxidase 1 (GPX1), catalase (CAT)), cell cycle regulation and apoptosis cascade (apoptosis tumour protein 53 (TP53), caspase 3, apoptosis-related cysteine protease (CASP3)), cell cycle progression (cellular cycle V-Akt murine thymoma viral oncogene homologue 1 (AKT1)), cumulus expansion (gap junction protein, alpha 1, 43 kDa (GJA1) and prostaglandin-endoperoxide synthase 2 (prostaglandin G/H synthase and cyclo-oxygenase) (PTGS2)) and metabolism (glucose-6-phosphate dehydrogenase (G6PD)). Meiotic progression, mitochondrial reallocation, cumulus cell apoptosis and the developmental competence of oocytes after IVF were also assessed. Expression of SOD2, CAT, TP53, CASP3 and GJA1 was downregulated in cumulus–oocyte complexes (COCs) after IVM with 100 μM α-tocopherol compared with the group without the antioxidant. The apoptotic rate and the percentage of a non-migrated mitochondrial pattern were lower in COCs cultured with 100 μM α-tocopherol, consistent with better-quality oocytes. In fact, early embryo development was improved when 100 μM α-tocopherol was included in the IVM medium, but remained low compared with in vivo-matured oocytes. In conclusion, the addition of 100 μM α-tocopherol to the maturation medium is a suitable approach to manage oxidative stress and apoptosis, as well as for increasing the in vitro developmental competence of rabbit oocytes.
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Effect of insulin-transferrin-selenium (ITS) and l-ascorbic acid (AA) during in vitro maturation on in vitro bovine embryo development. ZYGOTE 2016; 24:890-899. [PMID: 27748220 DOI: 10.1017/s0967199416000228] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The aim of this study was to evaluate the effect of adding a combination of insulin, transferrin and selenium (ITS) and l-ascorbic acid (AA) during in vitro maturation (IVM) and in vitro culture (IVC) on in vitro embryo production. To verify the effect of the supplements, cleavage and blastocyst rates, embryo size and total cell number were performed. Embryonic development data, embryo size categorization and kinetics of maturation were analyzed by chi-squared test, while the total cell number was analyzed by a Kruskal-Wallis test (P < 0.05). When ITS was present during IVM, IVC or the entire culture, all treatments had a cleavage and blastocyst rates and embryo quality, similar to those of the control group (P < 0.05). Supplementation of IVM medium with ITS and AA for 12 h or 24 h showed that the last 12 h increased embryo production (51.6%; n = 220) on D7 compared with the control (39.5%; n = 213). However, no improvement was observed in blastocyst rate when less competent oocytes, obtained from 1-3 mm follicles, were exposed to ITS + AA for the last 12 h of IVM, with a blastocyst rate of 14.9% (n = 47) compared with 61.0% (n = 141) in the control group. The results suggest that the addition of ITS alone did not affect embryo production; however, when combined with AA in the last 12 h of maturation, there was improvement in the quantity and quality of embryos produced. Furthermore, the use of ITS and AA during IVM did not improve the competence of oocytes obtained from small follicles.
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Kim KJ, Chun JL, Lee KB, Lee JH, Park KS, Han KW, Lee BM, Kim EY, Kim JM, Kim MK. Effect of acteoside on the re-localization and abnormal morphology of mitochondria in porcine oocytes during in vitro maturation. J Assist Reprod Genet 2016; 33:939-48. [PMID: 27189054 DOI: 10.1007/s10815-016-0729-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 05/03/2016] [Indexed: 11/28/2022] Open
Abstract
PURPOSE The aim of this study is to investigate the effect of acteoside, an antioxidant, on in vitro maturation (IVM) of oocytes to improve early parthenogenetic embryonic developmental competence. METHODS Porcine immature oocytes (total 770) were cultured in IVM medium with acteoside at various concentrations, 0 (control), 10, 30, and 50 μM. Each group was assessed for maturation and subsequent development rates, reactive oxygen species (ROS) level (15 oocytes per group and four independent experiments performed), ultrastructure observation (15 oocytes per group), mitochondrial activity (30 oocytes per groups and three independent experiments performed), and expression patterns of apoptosis-related genes (100 expended parthenogenetic embryos per group and three independent experiment performed). Main outcome measures were the rates of IVM, blastocyst formation, ROS, mitochondria, and expression of apoptosis-related genes in oocytes treated with acteoside. RESULT(S) Addition of acteoside during IVM did not change the maturation efficiency of oocytes but improved the rate of blastocyst formation with significantly decreased ROS level. Moreover, in acteoside-treated oocytes, cytoplasmic maturation was improved with morphologically uniform distribution of mitochondria and lipid droplets in cytoplasm. Acteoside supplementation also increased the mRNA expression levels of antiapoptotic genes and reduced those of pro-apoptotic genes. CONCLUSION(S) Acteoside supplementation in IVM medium improves the oocyte quality and subsequent development of pre-implantation embryos that would eventually contribute to produce embryos with high embryonic development competence.
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Affiliation(s)
- Keun Jung Kim
- Department of Animal Science and Biotechnology, College of Agriculture and Life Science, Chungnam National University, Daejeon, 305-764, Republic of Korea
| | - Ju Lan Chun
- Department of Animal Science and Biotechnology, College of Agriculture and Life Science, Chungnam National University, Daejeon, 305-764, Republic of Korea
| | - Kyung-Bon Lee
- Department of Biology Education, College of Education, Chonnam National University, Gwangju, 500-757, Republic of Korea
| | - Ji Hye Lee
- Department of Animal Science and Biotechnology, College of Agriculture and Life Science, Chungnam National University, Daejeon, 305-764, Republic of Korea
| | - Kang-Sun Park
- Department of Animal Science and Biotechnology, College of Agriculture and Life Science, Chungnam National University, Daejeon, 305-764, Republic of Korea
| | - Kil Woo Han
- Department of Animal Science and Biotechnology, College of Agriculture and Life Science, Chungnam National University, Daejeon, 305-764, Republic of Korea
| | - Bo Myeong Lee
- Department of Animal Science and Biotechnology, College of Agriculture and Life Science, Chungnam National University, Daejeon, 305-764, Republic of Korea
| | - Eun Young Kim
- Department of Animal Science and Biotechnology, College of Agriculture and Life Science, Chungnam National University, Daejeon, 305-764, Republic of Korea
| | - Jin Man Kim
- Department of Pathology, School of Medicine, Chungnam National University, Daejeon, 301-747, Republic of Korea
| | - Min Kyu Kim
- Department of Animal Science and Biotechnology, College of Agriculture and Life Science, Chungnam National University, Daejeon, 305-764, Republic of Korea.
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13
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De Bie J, Langbeen A, Verlaet AAJ, Florizoone F, Immig I, Hermans N, Fransen E, Bols PEJ, Leroy JLMR. The effect of a negative energy balance status on β-carotene availability in serum and follicular fluid of nonlactating dairy cows. J Dairy Sci 2016; 99:5808-5819. [PMID: 27157583 DOI: 10.3168/jds.2016-10870] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 03/10/2016] [Indexed: 11/19/2022]
Abstract
Maternal metabolic pressure due to a cow's negative energy balance (NEB) has a negative effect on oocyte quality as a result of increased oxidative stress. In this study, we hypothesized that a NEB status may negatively affect the availability of β-carotene (bC, an antioxidant) in the micro-environment of the oocyte or follicular fluid (FF) and that daily bC supplementation can increase bC availability. We aimed to (1) determine the effect of a nutritionally induced NEB on bC concentrations in serum and FF as well as on the presence of bC metabolites, oxidative stress levels, and follicular growth in a nonlactating dairy cow model, and (2) investigate how this effect could be altered by dietary bC supplementation. Six multiparous nonlactating Holstein Friesian cows were subjected to 4 consecutive dietary treatments, 28 d each: (1) 1.2 × maintenance (M) or positive energy balance (PEB) without bC supplement (PEB-bC), (2) 1.2 × M with daily supplement of 2,000mg of bC comparable to the level of bC intake at grazing (PEB+bC), (3) 0.6 × M with 2,000mg of bC (NEB+bC), and (4) 0.6 × M (NEB-bC). At the end of each treatment, estrous cycles were synchronized and blood and FF of the largest follicle were sampled and analyzed for bC, retinol, α-tocopherol, free fatty acids, estradiol, and progesterone. Serum cholesterol, triglycerides, urea, insulin growth factor 1, growth hormone, total antioxidant status (TAS), and red blood cell glutathione (GSH) concentrations were determined as well. All cows lost body weight during both energy restriction periods and showed increased serum free fatty acid concentrations, illustrating a NEB. A dietary induced NEB reduced FF bC, but not plasma bC or plasma and FF retinol concentrations. However, bC and retinol concentrations drastically increased in both fluid compartments after bC supplementation. Follicular diameter was increased in supplemented PEB cows. Energy restriction reduced the TAS and red blood cell GSH, whereas daily bC supplementation could restore GSH concentrations, but not the TAS, to levels present in healthy PEB cows. In conclusion, daily bC supplementation can substantially improve bC and retinol availability in the oocyte's micro-environment, irrespective of the energy balance, which may affect follicular development and oocyte quality in the presence of maternal metabolic stress. This knowledge can be of importance to optimize nutritional strategies in the dairy industry to feed for optimal oocyte quality and fertility.
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Affiliation(s)
- J De Bie
- Gamete Research Centre, Laboratory for Veterinary Physiology and Biochemistry, Department of Veterinary Sciences, University of Antwerp, B-2610 Wilrijk, Belgium.
| | - A Langbeen
- Gamete Research Centre, Laboratory for Veterinary Physiology and Biochemistry, Department of Veterinary Sciences, University of Antwerp, B-2610 Wilrijk, Belgium
| | - A A J Verlaet
- Laboratory of Nutrition and Functional Food Science, Department of Pharmaceutical Sciences, University of Antwerp, B-2610 Wilrijk, Belgium
| | - F Florizoone
- DSM Nutritional Products, CH-4303 Kaiseraugst, Switzerland
| | - I Immig
- DSM Nutritional Products, CH-4303 Kaiseraugst, Switzerland
| | - N Hermans
- Laboratory of Nutrition and Functional Food Science, Department of Pharmaceutical Sciences, University of Antwerp, B-2610 Wilrijk, Belgium
| | - E Fransen
- StatUa Center for Statistics, University of Antwerp, B-2610 Wilrijk, Belgium
| | - P E J Bols
- Gamete Research Centre, Laboratory for Veterinary Physiology and Biochemistry, Department of Veterinary Sciences, University of Antwerp, B-2610 Wilrijk, Belgium
| | - J L M R Leroy
- Gamete Research Centre, Laboratory for Veterinary Physiology and Biochemistry, Department of Veterinary Sciences, University of Antwerp, B-2610 Wilrijk, Belgium
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14
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Enhanced in vitro developmental competence of sheep embryos following sericin supplementation of the in vitro maturation and in vitro culture media. Small Rumin Res 2016. [DOI: 10.1016/j.smallrumres.2016.01.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Alviggi C, Cariati F, Conforti A, De Rosa P, Vallone R, Strina I, Pivonello R, De Placido G. The effect of FT500 Plus(®) on ovarian stimulation in PCOS women. Reprod Toxicol 2015; 59:40-4. [PMID: 26545973 DOI: 10.1016/j.reprotox.2015.10.014] [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: 06/16/2015] [Revised: 10/11/2015] [Accepted: 10/26/2015] [Indexed: 10/22/2022]
Abstract
Both oxidative stress and polycystic ovary syndrome have been involved in several aspects of female reproduction. In this retrospective observational study, the outcome of controlled ovarian stimulation and follicular microenvironment of twenty-five women affected by PCOS (Group A) have been explored, evaluating the effects of myo-inositol in association with antioxidant activities (FT500 Plus(®)). Twenty-five untreated-PCOS women (Group B) with similar characteristics served as control group. Although there was no difference in ovarian volume at time zero, this parameter was significantly smaller at the 5-month follow-up in the Group A (11.1±0.9 versus 13.5±1; P=0.0001). Group A showed a significant increase in the number of MII oocytes (6.3±2.5 versus 4.5±2; P=0.03) and glutathione peroxidase activity in follicular fluid (15.4±6.2 versus 11±2.2; P=0.04). FT500 Plus(®) may be considered in PCOS patient for improving oocyte quality.
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Affiliation(s)
- Carlo Alviggi
- Department of Neuroscience, Reproductive Medicine, Odontostomatology-University of Naples "Federico II", via Sergio Pansini 5, 80131 Naples, Italy.
| | - Federica Cariati
- CEINGE Biotecnologie Avanzate, via G. Salvatore 486, 80145 Naples, Italy; Department of Clinical Medicine and Surgery, Endocrinology Section, University "Federico II", via Pansini 5, 80131 Naples, Italy.
| | - Alessandro Conforti
- Department of Neuroscience, Reproductive Medicine, Odontostomatology-University of Naples "Federico II", via Sergio Pansini 5, 80131 Naples, Italy.
| | - Pasquale De Rosa
- Department of Neuroscience, Reproductive Medicine, Odontostomatology-University of Naples "Federico II", via Sergio Pansini 5, 80131 Naples, Italy.
| | - Roberta Vallone
- Department of Neuroscience, Reproductive Medicine, Odontostomatology-University of Naples "Federico II", via Sergio Pansini 5, 80131 Naples, Italy.
| | - Ida Strina
- Department of Neuroscience, Reproductive Medicine, Odontostomatology-University of Naples "Federico II", via Sergio Pansini 5, 80131 Naples, Italy.
| | - Rosario Pivonello
- Department of Clinical Medicine and Surgery, Endocrinology Section, University "Federico II", via Pansini 5, 80131 Naples, Italy.
| | - Giuseppe De Placido
- Department of Neuroscience, Reproductive Medicine, Odontostomatology-University of Naples "Federico II", via Sergio Pansini 5, 80131 Naples, Italy.
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16
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Ishikawa S, Machida R, Hiraga K, Hiradate Y, Suda Y, Tanemura K. Hanging drop monoculture for selection of optimal antioxidants during in vitro maturation of porcine oocytes. Reprod Domest Anim 2014; 49:e26-30. [PMID: 24629146 DOI: 10.1111/rda.12289] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Accepted: 01/16/2014] [Indexed: 02/05/2023]
Abstract
We analysed the effect of three antioxidants that have different functional mechanisms on the in vitro maturation (IVM) of porcine oocytes. Single oocyte monoculture using the hanging drop (HD) system has some advantages such as improving analysis efficiency brought by the smaller number of samples than the number of oocytes cultured in one drop. Direct effects of ligands on single oocytes could also be detected without considering the effects of paracrine factors from other oocytes. After 22 h of pre-culture, denuded oocytes were cultured for 22 h with 0.01 and 0.1 μg/ml of L-carnitine (LC), lactoferrin (LF) or sulforaphane (SF) in the presence/non-presence of oxidant stress induced by H2O2 supplementation to evaluate the reducing effects against oxidative stress on nuclear maturation. As a result, compared with LC and SF, LF showed effective reduction in oxidative stress at a lower concentration (0.01 μg/ml), suggesting that LF is a more effective antioxidant in porcine oocyte IVM. Additionally, LF also increased maturation rate even in culture without H2O2. Our results clearly suggest that the HD monoculture system is useful for screening the substances that affect porcine oocyte culture.
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Affiliation(s)
- S Ishikawa
- Laboratory of Animal Reproduction and Development, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan
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17
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Tagler D, Makanji Y, Tu T, Bernabé BP, Lee R, Zhu J, Kniazeva E, Hornick JE, Woodruff TK, Shea LD. Promoting extracellular matrix remodeling via ascorbic acid enhances the survival of primary ovarian follicles encapsulated in alginate hydrogels. Biotechnol Bioeng 2014; 111:1417-29. [PMID: 24375265 DOI: 10.1002/bit.25181] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 12/18/2013] [Accepted: 12/23/2013] [Indexed: 01/12/2023]
Abstract
The in vitro growth of ovarian follicles is an emerging technology for fertility preservation. Various strategies support the culture of secondary and multilayer follicles from various species including mice, non-human primate, and human; however, the culture of early stage (primary and primordial) follicles, which are more abundant in the ovary and survive cryopreservation, has been limited. Hydrogel-encapsulating follicle culture systems that employed feeder cells, such as mouse embryonic fibroblasts (MEFs), stimulated the growth of primary follicles (70-80 µm); yet, survival was low and smaller follicles (<70 µm) rapidly lost structure and degenerated. These morphologic changes were associated with a breakdown of the follicular basement membrane; hence, this study investigated ascorbic acid based on its role in extracellular matrix (ECM) deposition/remodeling for other applications. The selection of ascorbic acid was further supported by a microarray analysis that suggested a decrease in mRNA levels of enzymes within the ascorbate pathway between primordial, primary, and secondary follicles. The supplementation of ascorbic acid (50 µg/mL) significantly enhanced the survival of primary follicles (<80 µm) cultured in alginate hydrogels, which coincided with improved structural integrity. Follicles developed antral cavities and increased to diameters exceeding 250 µm. Consistent with improved structural integrity, the gene/protein expression of ECM and cell adhesion molecules was significantly changed. This research supports the notion that modifying the culture environment (medium components) can substantially enhance the survival and growth of early stage follicles.
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Affiliation(s)
- David Tagler
- Department of Chemical and Biological Engineering, McCormick School of Engineering, Northwestern University, Technological Institute E-136, 2145 Sheridan Road, Evanston, Illinois, 60208; Institute for BioNanotechnology in Medicine (IBNAM), Northwestern University, 303 E. Superior Street, Suite 11-131, Chicago, Illinois, 60611
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18
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Kere M, Siriboon C, Lo NW, Nguyen NT, Ju JC. Ascorbic acid improves the developmental competence of porcine oocytes after parthenogenetic activation and somatic cell nuclear transplantation. J Reprod Dev 2012; 59:78-84. [PMID: 23154385 PMCID: PMC3943238 DOI: 10.1262/jrd.2012-114] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
In this study, a dose-response assessment was performed to understand the relation
between supplementation of media with L-ascorbic acid or vitamin C and porcine oocyte
maturation and the in vitro development of parthenotes (PA) and handmade
cloned (HMC) embryos. Various concentrations (0, 25, 50 and 100 µg/ml) of vitamin C
supplemented in in vitro maturation (IVM) and culture (IVC) media were
tested. None of these vitamin C additions affected nuclear maturation of oocytes, yet
supplementation at 50 µg/ml led to significantly increased intracellular glutathione (GSH)
levels and reduced reactive oxygen species (ROS). When cultured in IVM- and/or
IVC-supplemented media, the group supplemented with 50 µg/ml of vitamin C showed improved
cleavage rates, blastocyst rates and total cell numbers per blastocyst (P<0.05)
compared with other groups (control, 25 µg/ml and 100 µg/ml). In contrast, supplementation
with 50 µg/ml vitamin C decreased (P<0.05) the apoptosis index as compared with the
groups supplemented with 100 µg/ml. In addition, even with a lower blastocyst rate to
start with (37.6 vs. 50.3%, P<0.05), supplementation of HMC embryos
with vitamin C ameliorated their blastocyst quality to the extent of PA embryos as
indicated by their total cell numbers (61.2 vs. 59.1). Taken together, an
optimized concentration of vitamin C supplementation in the medium not only improves
blastocyst rates and total cell numbers but also reduces apoptotic indices, whereas
overdosages compromise various aspects of the development of parthenotes and cloned
porcine embryos.
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Affiliation(s)
- Michel Kere
- Department of Animal Science, National Chung Hsing University, Taichung 402, Taiwan, ROC
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19
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Salavati M, Ghafari F, Zhang T, Fouladi-Nashta AA. Effects of oxygen concentration on in vitro maturation of canine oocytes in a chemically defined serum-free medium. Reproduction 2012; 144:547-56. [DOI: 10.1530/rep-12-0176] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Canine oocytes require an extended period of culture (72 h) in vitro for nuclear maturation to the metaphase II stage, which also results in high degeneration. Canine cumulus oocyte complexes were isolated by slicing from ovaries collected after ovariohysterectomy and cultured in serum-free synthetic oviductal fluid incubated at low (5%) or high (20%) oxygen levels. Changes in oocyte nuclear maturation rates, H2O2 levels within the oocytes and mRNAs of reactive oxygen species inhibitory genes superoxide dismutase 1 and 2 (SOD1 and 2), glutathione reductase (GSR), glutathione peroxidase (GPX1), and catalase (CAT) were quantified. Higher meiotic resumption from germinal vesicle breakdown up to MII was observed in low O2 (41.8±13.1%) compared to high O2 (15.8±8.2%) (P=0.014) after 52 h of culture (n=112). Extension of the culture period up to 84 h at low O2 (n=457 oocytes) produced the highest meiotic resumption at 72 h (64.1±6.0%; P=0.008), compared with 52 h. Oocytes (n=110) cultured in high O2 contained higher levels of peroxidase measured using the 2′,7′-dichlorodihydrofluorescein diacetate fluorescence assay after 72 h of culture compared with low O2 (P=0.004). High O2-cultured oocytes also showed higher amounts of SOD1, SOD2, GSR, GPX1, and CAT mRNA. Vitamin E in high oxygen level was able to decrease degeneration (P=0.008) but had no improving effect on percentage of oocytes in MII. These results for the first time showed that low oxygen gas composition improves nuclear maturation rates and alleviates the oxidative stress for canine oocytes during in vitro maturation.
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20
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Stricker SA. Inhibition of germinal vesicle breakdown by antioxidants and the roles of signaling pathways related to nitric oxide and cGMP during meiotic resumption in oocytes of a marine worm. Reproduction 2011; 143:261-70. [PMID: 22187672 DOI: 10.1530/rep-11-0358] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
In mammalian oocytes, cAMP elevations prevent the resumption of meiotic maturation and thereby block nuclear disassembly (germinal vesicle breakdown (GVBD)), whereas nitric oxide (NO) and its downstream mediator cGMP can either inhibit or induce GVBD. Alternatively, some invertebrate oocytes use cAMP to stimulate, rather than inhibit, GVBD, and in such cases, the effects of NO/cGMP signaling on GVBD remain unknown. Moreover, potential interactions between NO/cGMP and AMP-activated kinase (AMPK) have not been assessed during GVBD. Thus, this study analyzed intraoocytic signaling pathways related to NO/cGMP in a marine nemertean worm that uses cAMP to induce GVBD. For such tests, follicle-free nemertean oocytes were stimulated to mature by seawater (SW) and cAMP elevators. Based on immunoblots and NO assays of maturing oocytes, SW triggered AMPK deactivation, NO synthase (NOS) phosphorylation, and an NO elevation. Accordingly, SW-induced GVBD was blocked by treatments involving the AMPK agonist AICAR, antioxidants, the NO scavenger carboxy-PTIO, NOS inhibitors, and cGMP antagonists that target the NO-stimulated enzyme, soluble guanylate cyclase (sGC). Conversely, SW solutions combining NO/cGMP antagonists with a cAMP elevator restored GVBD. Similarly, AICAR plus a cAMP-elevating drug reestablished GVBD while deactivating AMPK and phosphorylating NOS. Furthermore, sGC stimulators and 8-Br-cGMP triggered GVBD. Such novel results indicate that NO/cGMP signaling can upregulate SW-induced GVBD and that cAMP-elevating drugs restore GVBD by overriding the inhibition of various NO/cGMP downregulators, including AMPK. Moreover, considering the opposite effects of intraoocytic cAMP in nemerteans vs mammals, these data coincide with previous reports that NO/cGMP signaling blocks GVBD in rats.
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Affiliation(s)
- Stephen A Stricker
- Department of Biology, University of New Mexico, Albuquerque, New Mexico 87131, USA.
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21
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Casey SJ, Taupier R, Whitaker BD. Effects of anti-lipid peroxidases on frozen-thawed boar spermatozoa. In Vitro Cell Dev Biol Anim 2011; 47:350-4. [DOI: 10.1007/s11626-011-9403-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2010] [Accepted: 03/14/2011] [Indexed: 12/14/2022]
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22
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Antioxidants rescue stressed embryos at a rate comparable with co-culturing of embryos with human umbilical cord mesenchymal cells. J Assist Reprod Genet 2011; 28:343-9. [PMID: 21207131 DOI: 10.1007/s10815-010-9529-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Accepted: 12/20/2010] [Indexed: 12/18/2022] Open
Abstract
PURPOSE During laboratory manipulations, oocytes and embryos are inevitably exposed to suboptimal conditions that interfere with the normal development of embryos. MATERIALS AND METHODS In this study, we examined the effects of antioxidants, feeder cells and a conditioned medium on embryo development and cleavage rate following exposure of the embryos to suboptimal conditions. We exposed mouse two-cell embryos to visible light and divided them into four groups: control (E-ctr), co-culture (Co-c), conditioned medium (Cndm) and antioxidant-plus medium (Aopm). We used human umbilical cord matrix-derived mesenchymal cells for co-culture. A group of embryos was not exposed to visible light and served as the non-exposed control (NE-ctr) group. RESULTS The developmental rate was higher in NE-ctr embryos than in the E-ctr group. Exposed embryos in the various groups showed a comparable developmental rate at different stages. Blastomere number significantly increased (P < 0.05) in the Co-c and Aopm groups compared with the E-ctr and Cndm groups. No significant difference was observed between the Co-c and Aopm groups. CONCLUSIONS Our data indicate that in suboptimal conditions, antioxidants could improve the embryo cleavage rate in the same way as feeder cells. Antioxidants probably improve embryo quality through their ability to scavenge reactive oxygen species.
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VIET LINH N, KIKUCHI K, NAKAI M, NOGUCHI J, KANEKO H, DANG-NGUYEN TQ, MAEDOMARI N, NGUYEN BX, NAGAI T, MANABE N. Improvement of Porcine Oocytes with Low Developmental Ability after Fusion of Cytoplasmic Fragments Prepared by Serial Centrifugation. J Reprod Dev 2011; 57:620-6. [DOI: 10.1262/jrd.11-053h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Nguyen VIET LINH
- Animal Resource Science Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Ibaraki 319-0206, Japan
- Division of Animal Sciences, National Institute of Agrobiological Sciences, Ibaraki 305-8602, Japan
- Institute of Biotechnology, Vietnamese Academy of Science and Technology, Hanoi, Vietnam
| | - Kazuhiro KIKUCHI
- Division of Animal Sciences, National Institute of Agrobiological Sciences, Ibaraki 305-8602, Japan
| | - Michiko NAKAI
- Division of Animal Sciences, National Institute of Agrobiological Sciences, Ibaraki 305-8602, Japan
| | - Junko NOGUCHI
- Division of Animal Sciences, National Institute of Agrobiological Sciences, Ibaraki 305-8602, Japan
| | - Hiroyuki KANEKO
- Division of Animal Sciences, National Institute of Agrobiological Sciences, Ibaraki 305-8602, Japan
| | - Thanh Quang DANG-NGUYEN
- Institute of Biotechnology, Vietnamese Academy of Science and Technology, Hanoi, Vietnam
- Graduate School of Life and Environmental Science, University of Tsukuba, Ibaraki 305-8572, Japan
- National Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization, Ibaraki 305-0901, Japan
| | - Naoki MAEDOMARI
- Graduate School of Veterinary Medicine, Azabu University, Kanagawa 252-5201, Japan
| | - Bui Xuan NGUYEN
- Institute of Biotechnology, Vietnamese Academy of Science and Technology, Hanoi, Vietnam
| | - Takashi NAGAI
- National Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization, Ibaraki 305-0901, Japan
| | - Noboru MANABE
- Animal Resource Science Center, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Ibaraki 319-0206, Japan
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Córdova B, Morató R, Izquierdo D, Paramio T, Mogas T. Effect of the addition of insulin-transferrin-selenium and/or L-ascorbic acid to the in vitro maturation of prepubertal bovine oocytes on cytoplasmic maturation and embryo development. Theriogenology 2010; 74:1341-8. [DOI: 10.1016/j.theriogenology.2010.06.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2010] [Revised: 05/14/2010] [Accepted: 06/02/2010] [Indexed: 11/28/2022]
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