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Silva BR, Barrozo LG, Nascimento DR, Costa FC, Azevedo VAN, Paulino LRFM, Lopes EPF, Batista ALPS, Aguiar FLN, Peixoto CA, Donato MAM, Rodrigues APR, Silva JRV. Effects of cyclic adenosine monophosphate modulating agents during oocyte pre-maturation and the role of melatonin on in vitro maturation of bovine cumulus-oocyte complexes. Anim Reprod Sci 2023; 257:107327. [PMID: 37696223 DOI: 10.1016/j.anireprosci.2023.107327] [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: 05/30/2023] [Revised: 08/16/2023] [Accepted: 09/01/2023] [Indexed: 09/13/2023]
Abstract
This study investigated the effects of cyclic adenosine monophosphate modulating during cumulus-oocyte complexes (COCs) pre-maturation and the role of melatonin on in vitro maturation (IVM) of bovine COCs. In experiment one, COCs were pre-matured for 8 h in control medium or with 3-isobutyl-1-methylxanthine (IBMX) and forskolin, IBMX and C-type natriuretic peptide, c-type natriuretic peptide and forskolin or IBMX, forskolin and c-type natriuretic peptide. Then, meiotic progression was evaluated. In experiment two, COCs were pre-matured, followed by IVM in control medium alone or with 10-6, 10-7 or 10-8 M melatonin. After IVM, chromatin configuration, transzonal projections (TZPs), reactive oxygen species, mitochondrial distribution, ultrastructure and mRNA expression for antioxidant enzymes were evaluated. In experiment 1, COCs pre-matured with both C-type natriuretic peptide and forskolin or C-type natriuretic peptide, forskolin and IBMX had lower meiotic resumption rate when compared to control. Considering that IBMX had not an additional effect to potentiate inhibition of meiotic resumption, a combination of C-type natriuretic peptide and forskolin was chosen. In experiment 2, COCs matured with 10-8 M melatonin had greater rates of meiotic resumption when compared to the other treatments (P < 0.05). The COCs matured with 10-7 or 10-8 M melatonin had greater mitochondrial activity (P < 0.05), while those matured with 10-6 or 10-8 M of melatonin had greater levels of TZPs. Ultrastructure of oocyte and cumulus cells after IVM with melatonin was relatively well preserved. COCs matured with 10-8 M melatonin increased mRNA expression for superoxide dismutase (SOD) and catalase (CAT) (P < 0.05), when compared to non-cultured and pre-matured COCs, respectively. In conclusion, bovine COC pre-maturation with C-type natriuretic peptide and forskolin, followed by IVM with 10-8 M melatonin improves meiotic resumption rates, TZPs, mitochondrial distribution and mRNA expression for SOD and CAT.
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Affiliation(s)
- Bianca R Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, Sobral 62041-040, Ceará, Brazil
| | - Laryssa G Barrozo
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, Sobral 62041-040, Ceará, Brazil
| | - Danisvânia R Nascimento
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, Sobral 62041-040, Ceará, Brazil
| | - Francisco C Costa
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, Sobral 62041-040, Ceará, Brazil
| | - Venância A N Azevedo
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, Sobral 62041-040, Ceará, Brazil
| | - Laís R F M Paulino
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, Sobral 62041-040, Ceará, Brazil
| | - Everton P F Lopes
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, Ceará, Brazil
| | - Ana L P S Batista
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, Sobral 62041-040, Ceará, Brazil
| | - Francisco L N Aguiar
- Department of Veterinary Medicine, Sousa Campus, Federal Institute of Education, Science and Technology of Paraíba, Sousa, Paraíba, Brazil
| | - Christina A Peixoto
- Laboratory of Ultrastructure, CPqAM/FIOCRUZ, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Mariana A M Donato
- Laboratory of Ultrastructure, CPqAM/FIOCRUZ, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Ana P R Rodrigues
- Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, Ceará, Brazil
| | - José R V Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Maurocélio Rocha Ponte 100, Sobral 62041-040, Ceará, Brazil.
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Salimov D, Lisovskaya T, Otsuki J, Gzgzyan A, Bogolyubova I, Bogolyubov D. Chromatin Morphology in Human Germinal Vesicle Oocytes and Their Competence to Mature in Stimulated Cycles. Cells 2023; 12:1976. [PMID: 37566055 PMCID: PMC10416848 DOI: 10.3390/cells12151976] [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: 06/23/2023] [Revised: 07/17/2023] [Accepted: 07/18/2023] [Indexed: 08/12/2023] Open
Abstract
The search for simple morphological predictors of oocyte quality is an important task for assisted reproduction technologies (ARTs). One such predictor may be the morphology of the oocyte nucleus, called the germinal vesicle (GV), including the level of chromatin aggregation around the atypical nucleolus (ANu)-a peculiar nuclear organelle, formerly referred to as the nucleolus-like body. A prospective cohort study allowed distinguishing three classes of GV oocytes among 135 oocytes retrieved from 64 patients: with a non-surrounded ANu and rare chromatin blocks in the nucleoplasm (Class A), with a complete peri-ANu heterochromatic rim assembling all chromatin (Class C), and intermediate variants (Class B). Comparison of the chromatin state and the ability of oocytes to complete meiosis allowed us to conclude that Class B and C oocytes are more capable of resuming meiosis in vitro and completing the first meiotic division, while Class A oocytes can resume maturation but often stop their development either at metaphase I (MI arrest) or before the onset of GV breakdown (GVBD arrest). In addition, oocytes with a low chromatin condensation demonstrated a high level of aneuploidy during the resumption of meiosis. Considering that the degree of chromatin condensation/compaction can be determined in vivo under a light microscope, this characteristic of the GV can be considered a promising criterion for selecting the best-quality GV oocytes in IVM rescue programs.
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Affiliation(s)
- Daniil Salimov
- Clinical Institute of Reproductive Medicine, Yekaterinburg 620014, Russia;
| | - Tatiana Lisovskaya
- Clinical Institute of Reproductive Medicine, Yekaterinburg 620014, Russia;
| | - Junko Otsuki
- Assisted Reproductive Technology Center, Graduate School of Environmental, Life, Natural Science and Technology, Okayama University, Okayama 700-8530, Japan;
| | - Alexandre Gzgzyan
- Research Institute of Obstetrics, Gynecology and Reproductology Named after D. O. Ott, St. Petersburg 199034, Russia;
| | - Irina Bogolyubova
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg 194064, Russia;
- Department of Histology and Embryology Named after Prof. A.G. Knorre, St. Petersburg State Pediatric Medical University, St. Petersburg 194100, Russia
| | - Dmitry Bogolyubov
- Institute of Cytology, Russian Academy of Sciences, St. Petersburg 194064, Russia;
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Wen X, Han Z, Liu SJ, Hao X, Zhang XJ, Wang XY, Zhou CJ, Ma YZ, Liang CG. Phycocyanin Improves Reproductive Ability in Obese Female Mice by Restoring Ovary and Oocyte Quality. Front Cell Dev Biol 2020; 8:595373. [PMID: 33282873 PMCID: PMC7691388 DOI: 10.3389/fcell.2020.595373] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 10/06/2020] [Indexed: 12/15/2022] Open
Abstract
Reproductive dysfunction associated with obesity is increasing among women of childbearing age. Emerging evidence indicates that maternal obesity impairs embryo development and offspring health, and these defects are linked to oxidative stress in the ovary and in oocytes. Phycocyanin (PC) is a biliprotein from Spirulina platensis that possesses antioxidant, anti-inflammatory, and radical-scavenging properties. Our previous studies have shown that PC can reduce reactive oxygen species (ROS) accumulation in oocytes in D-gal-induced aging mice. Here, at the Institute of Cancer Research (ICR) mice fed a high-fat diet (HFD) to model obesity were used to test the effect of PC on reversing the fertility decline caused by obesity. We observed a significant increase in litter size and offspring survival rates after PC administration to obese mice. Further, we found that PC not only ameliorated the level of ovarian antioxidant enzymes, but also reduced the occurrence of follicular atresia in obese female mice. In addition, the abnormal morphology of the spindle-chromosome complex (SCC), and the abnormal mitochondrial distribution pattern in oocytes both recovered. The obesity-related accumulation of ROS, increased number of early apoptotic cells, and the abnormal expression of H3K9me3 in oocytes were all partially reversed after PC administration. In summary, this is the first demonstration that PC can improve fertility by partially increasing ovarian and oocyte quality in obese female mice and provides a new strategy for clinically treating obesity-related infertility in females.
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Affiliation(s)
- Xin Wen
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Zhe Han
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Shu-Jun Liu
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Xin Hao
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Xiao-Jie Zhang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Xing-Yue Wang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Cheng-Jie Zhou
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
| | - Yu-Zhen Ma
- Inner Mongolia People's Hospital, Hohhot, China
| | - Cheng-Guang Liang
- State Key Laboratory of Reproductive Regulation and Breeding of Grassland Livestock, School of Life Sciences, Inner Mongolia University, Hohhot, China
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Abdelnour SA, Yang CY, Swelum AA, Abd El-Hack ME, Khafaga AF, Abdo M, Shang JH, Lu YQ. Molecular, functional, and cellular alterations of oocytes and cumulus cells induced by heat stress and shock in animals. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:38472-38490. [PMID: 32767010 DOI: 10.1007/s11356-020-10302-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 07/28/2020] [Indexed: 06/11/2023]
Abstract
Global warming is considered as the main environmental stress affecting ecosystems as well as physiological and biochemical characteristics, and survivability of living organisms. High temperature induces various stresses and causes reduction of fertility through reducing the oocyte developmental competence and alteration in surrounding cells' functions. This causes major economic loss to livestock creating a selective pressure on animals to the advantage of better adapted genotypes and to the detriment of others. In this review, a search in Science Direct, Google Scholar, PubMed, Web of Science, Scopus, and SID databases until 2020 was conducted. Keywords which include heat stress, shock, high temperature, oocyte, cumulus, and animals were investigated. Studies have exhibited that heat stress can disturb the development and function of oocyte and cumulus cells (CCs) concerning reproductive efficiency. Heat stress has deleterious consequences on oocyte maturation and development via reduced number of polar body extrusion, adenosine monophosphate, and guanosine monophosphate synthesis. Heat stress caused the alteration of cytoplasmic and nuclear features as well as trans-zonal projections and gap junctions. In addition, heat stress is accompanied with reduced mitochondrial activity (copy mDNA number, distribution, and membrane potential) in cumulus-oocyte complexes. This review targets the description of results in the most recent studies that aimed to call attention to the influences of heat stress on molecular, functional, and cellular changes in oocytes and CCs in animals to design evidence on the acting mechanisms as the core of this problem from a comparative review.
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Affiliation(s)
- Sameh A Abdelnour
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Animal Science and Technology, Guangxi University, Nanning, 530004, Guangxi, China
- Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning, 530001, People's Republic of China
- Animal Production Department, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt
| | - Chun-Yan Yang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Animal Science and Technology, Guangxi University, Nanning, 530004, Guangxi, China
- Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning, 530001, People's Republic of China
| | - Ayman A Swelum
- Department of Animal Production, College of Food and Agricultural Sciences, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia
- Department of Theriogenology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt
| | - Mohamed E Abd El-Hack
- Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig, 44511, Egypt
| | - Asmaa F Khafaga
- Department of Pathology, Faculty of Veterinary Medicine, Alexandria University, Edfina, 22758, Egypt
| | - Mohamed Abdo
- Department of Anatomy and Embryology, Faculty of Veterinary Medicine, University of Sadat City, Sadat City, 32897, Egypt
| | - Jiang-Hua Shang
- Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning, 530001, People's Republic of China.
| | - Yang-Qing Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Animal Science and Technology, Guangxi University, Nanning, 530004, Guangxi, China.
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Sodium nitrite negatively affects reproductive ability and offspring survival in female mice. Toxicology 2019; 427:152284. [PMID: 31476334 DOI: 10.1016/j.tox.2019.152284] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 08/26/2019] [Accepted: 08/29/2019] [Indexed: 12/12/2022]
Abstract
Sodium nitrite (NaNO2) is an industrial chemical that is frequently used as a food additive to prevent botulism and enhance glossiness, such as curing meat. In addition, in some regions, water source NaNO2 concentrations exceed standard regulatory levels. Whether the excessive intake of NaNO2 has toxic effects on female fertility and fetal development remain unknown. In this study, we administered ICR mice control saline, low-dose NaNO2 (60 mg/kg/day), or high-dose NaNO2 (120 mg/kg/day) by intragastric gavage for 21 days. We then assessed oocyte morphology, spindle-chromosome dynamics, mitochondrial distribution, ATP content, apoptotic cell numbers, DNA damage levels, histone modifications, reactive oxygen species (ROS) levels, and offspring survival. Results showed that NaNO2 treatment decreased oocyte number, impaired polar body extrusion, and increased zona pellucida thickness in oocytes. Furthermore, NaNO2 disrupted MII spindle integrity, caused abnormal mitochondrial distribution, decreased ATP content, and increased levels of ROS and H3K4me2. Moreover, the number of oocytes in early stages of apoptosis and with levels of DNA damage increased in NaNO2-treated mice along with decreased offspring numbers and survival rates. We demonstrated the negative effects of NaNO2 on female reproductive abilities in mice.
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Krisher RL. Maternal age affects oocyte developmental potential at both ends of the age spectrum. Reprod Fertil Dev 2019; 31:1-9. [PMID: 32188537 DOI: 10.1071/rd18340] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Maternal age has a significant effect on oocyte developmental competence. Overall, evidence suggests that oocytes from both prepubertal females and reproductively aged females are inherently less competent. Reduced oocyte quality in both age groups is problematic for human medicine and agriculture. Some of the cellular mechanisms implicated in poor oocyte quality associated with maternal age are mitochondrial function and location, reduction of oxygen radicals, balance of metabolic pathways, regulation of maternal mRNAs and appropriate communication between the oocyte and cumulus cells. However, additional knowledge must be gained about the deficiencies present in prepubertal and reproductively aged oocytes that result in poor developmental potential before significant improvement can be achieved. This review discusses the evidence currently available regarding oocyte quality at both ends of the maternal age spectrum, what we know, or hypothesise, about the mechanisms involved and current thoughts regarding potential treatment for improvement.
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Affiliation(s)
- Rebecca L Krisher
- Colorado Center for Reproductive Medicine, 10290 RidgeGate Circle, Lone Tree, CO 80124, USA. Email
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Yin C, Liu J, He B, Jia L, Gong Y, Guo H, Zhao R. Heat stress induces distinct responses in porcine cumulus cells and oocytes associated with disrupted gap junction and trans-zonal projection colocalization. J Cell Physiol 2018; 234:4787-4798. [PMID: 30341896 DOI: 10.1002/jcp.27277] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 07/26/2018] [Indexed: 01/02/2023]
Abstract
Cumulus cells (CCs), the granulosa cells surrounding the oocytes, play critical roles in oocytes maturation through intercellular communication by extending trans-zonal projections (TZPs) to contact oocytes via gap junctions (GJs). The adverse effect of heat stress (HS) on oocyte maturation has been well documented, whereas the HS responses of CCs and the oocytes in association with GJ/TZP colocalization remain unclear. In this study, porcine cumulus-oocyte complexes (COCs) were subjected to HS at 41.5°C for 24 hr during in vitro maturation. Cumulus expansion was impaired and oocyte quality was reduced with lower survival rate, polar body extrusion rate, and early embryo developmental potentials. CCs and oocytes isolated from COCs demonstrated distinct responses to HS. The messenger RNA abundance of heat shock protein-related genes and mitochondrial DNA-encoded genes, together with ATP content, were significantly increased in CCs, yet decreased in oocytes, despite activation of caspase 3 detected in both CCs and oocytes. Similar changes were observed when denuded oocytes and isolated CCs subjected to HS separately, except mitochondria reactive oxygen species (mROS). In heat-stressed COCs, mROS was significantly increased only in oocytes. However, when isolated CCs and denuded oocytes were heat-stressed separately, mROS was significantly increased only in CCs. Moreover, F-actin, a TZP marker, and its colocalization with a GJ protein connexin-45, were significantly reduced in heat-exposed COCs. These results indicate that HS induces distinct responses in porcine CCs and oocytes in association with disrupted GJ and TZP colocalization.
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Affiliation(s)
- Chao Yin
- MOE Joint International Research Laboratory of Animal Health & Food Safety, College of Veterinary Science, Nanjing Agricultural University, Nanjing, China.,Key Laboratory of Animal Physiology and Biochemistry, Ministry of Agriculture, College of Veterinary Science, Nanjing Agricultural University, Nanjing, China
| | - Jie Liu
- MOE Joint International Research Laboratory of Animal Health & Food Safety, College of Veterinary Science, Nanjing Agricultural University, Nanjing, China.,Key Laboratory of Animal Physiology and Biochemistry, Ministry of Agriculture, College of Veterinary Science, Nanjing Agricultural University, Nanjing, China
| | - Bin He
- MOE Joint International Research Laboratory of Animal Health & Food Safety, College of Veterinary Science, Nanjing Agricultural University, Nanjing, China.,Key Laboratory of Animal Physiology and Biochemistry, Ministry of Agriculture, College of Veterinary Science, Nanjing Agricultural University, Nanjing, China
| | - Longfei Jia
- MOE Joint International Research Laboratory of Animal Health & Food Safety, College of Veterinary Science, Nanjing Agricultural University, Nanjing, China.,Key Laboratory of Animal Physiology and Biochemistry, Ministry of Agriculture, College of Veterinary Science, Nanjing Agricultural University, Nanjing, China
| | - Yabin Gong
- MOE Joint International Research Laboratory of Animal Health & Food Safety, College of Veterinary Science, Nanjing Agricultural University, Nanjing, China.,Key Laboratory of Animal Physiology and Biochemistry, Ministry of Agriculture, College of Veterinary Science, Nanjing Agricultural University, Nanjing, China
| | - Huiduo Guo
- MOE Joint International Research Laboratory of Animal Health & Food Safety, College of Veterinary Science, Nanjing Agricultural University, Nanjing, China.,Key Laboratory of Animal Physiology and Biochemistry, Ministry of Agriculture, College of Veterinary Science, Nanjing Agricultural University, Nanjing, China
| | - Ruqian Zhao
- MOE Joint International Research Laboratory of Animal Health & Food Safety, College of Veterinary Science, Nanjing Agricultural University, Nanjing, China.,Key Laboratory of Animal Physiology and Biochemistry, Ministry of Agriculture, College of Veterinary Science, Nanjing Agricultural University, Nanjing, China
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8
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Melatonin Improves the Quality of Inferior Bovine Oocytes and Promoted Their Subsequent IVF Embryo Development: Mechanisms and Results. Molecules 2017; 22:molecules22122059. [PMID: 29186876 PMCID: PMC6149663 DOI: 10.3390/molecules22122059] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 11/17/2017] [Accepted: 11/21/2017] [Indexed: 02/02/2023] Open
Abstract
The inferior oocytes (IOs), which are not suitable for embryo development, occupy roughly one-third or more of the collected immature bovine oocytes. The IOs are usually discarded from the in vitro bovine embryo production process. Improving the quality of the inferior oocytes (IOs) and make them available in in vitro embryo production would have important biological, as well as commercial, value. This study was designed to investigate whether melatonin could improve the quality of IOs and make them usable in the in vitro maturation (IVM) and subsequent (in vitro fertilization) IVF embryo development. The results indicated that: the maturation rate of IOs and their subsequent IVF embryo developments were impaired compared to cumulus-oocyte complexes and melatonin treatment significantly improved the quality of IOs, as well as their IVF and embryo developments. The potential mechanisms are that: (1) melatonin reduced reactive oxygen species (ROS) and enhanced glutathione (GSH) levels in the IOs, thereby protecting them from oxidative stress; (2) melatonin improved mitochondrial normal distribution and function to increase ATP level in IOs; and (3) melatonin upregulated the expression of ATPase 6, BMP-15, GDF-9, SOD-1, Gpx-4, and Bcl-2, which are critical genes for oocyte maturation and embryo development and downregulated apoptotic gene expression of caspase-3.
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Li YJ, Han Z, Ge L, Zhou CJ, Zhao YF, Wang DH, Ren J, Niu XX, Liang CG. C-phycocyanin protects against low fertility by inhibiting reactive oxygen species in aging mice. Oncotarget 2017; 7:17393-409. [PMID: 27008700 PMCID: PMC4951220 DOI: 10.18632/oncotarget.8165] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 03/04/2016] [Indexed: 11/25/2022] Open
Abstract
Women over 35 have higher rates of infertility, largely due to deterioration of oocyte quality characterized by fragmentation, abnormal meiotic spindle-chromosome complexes, and oxidative stress. C-phycocyanin (PC) is a biliprotein enriched in Spirulina platensis that is known to possess antioxidant, anti-inflammatory, and radical-scavenging properties. D-galactose-induced aging acceleration in mice has been extensively used to study aging mechanisms and for pharmaceutical screening. In this study, adult female B6D2F/1 mice injected with D-galactose were used as a model to test the age-reversing effects of PC on degenerated reproductive ability. Our results show that PC can prevent oocyte fragmentation and aneuploidy by maintaining cytoskeletal integrity. Moreover, PC can reverse the expression of antioxidant genes, increase superoxide dismutase (SOD) activity and decrease methane dicarboxylic aldehyde (MDA) content, and normalize mitochondria distribution. PC exerts its benefit by inhibiting reactive oxygen species (ROS) production, which decreases apoptosis. Finally, we observe a significant increase in litter size after PC administration to D-galactose-induced aging mice. Our study demonstrates for the first time that D-galactose-induced impaired female reproductive capability can be partially rescued by the antioxidant effects of PC.
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Affiliation(s)
- Yan-Jiao Li
- The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia, People's Republic of China
| | - Zhe Han
- The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia, People's Republic of China
| | - Lei Ge
- The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia, People's Republic of China
| | - Cheng-Jie Zhou
- The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia, People's Republic of China
| | - Yue-Fang Zhao
- The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia, People's Republic of China
| | - Dong-Hui Wang
- The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia, People's Republic of China
| | - Jing Ren
- The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia, People's Republic of China
| | - Xin-Xin Niu
- The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia, People's Republic of China
| | - Cheng-Guang Liang
- The Key Laboratory of National Education Ministry for Mammalian Reproductive Biology and Biotechnology, The Research Center for Laboratory Animal Science, College of Life Science, Inner Mongolia University, Hohhot, Inner Mongolia, People's Republic of China
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10
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He C, Wang J, Zhang Z, Yang M, Li Y, Tian X, Ma T, Tao J, Zhu K, Song Y, Ji P, Liu G. Mitochondria Synthesize Melatonin to Ameliorate Its Function and Improve Mice Oocyte's Quality under in Vitro Conditions. Int J Mol Sci 2016; 17:ijms17060939. [PMID: 27314334 PMCID: PMC4926472 DOI: 10.3390/ijms17060939] [Citation(s) in RCA: 146] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 05/30/2016] [Accepted: 06/02/2016] [Indexed: 12/17/2022] Open
Abstract
The physiology of oocyte in vitro maturation remains elusive. Generally, the oocytes have a very low maturation rate under in vitro conditions. In the current study, we found that melatonin promotes the maturation of oocytes in which mitochondria play a pivotal role. It was identified that; (1) mitochondria are the major sites for melatonin synthesis in oocytes and they synthesize large amounts of melatonin during their maturation; (2) melatonin improves mitochondrial function by increased mtDNA copy, mitochondrial membrane potential (ΔΨm) and mitochondrial distribution and ATP production in oocytes; (3) the meiotic spindle assembly is enhanced; (4) melatonin reduces ROS production and inhibits 8-oxodG formation, thereby protecting potential DNA mutation from oxidative damage. As a result, melatonin improves the quality of oocytes, significantly accelerates the developmental ability of IVF embryo. The results provide novel knowledge on the physiology of oocyte’s maturation, especially under in vitro conditions.
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Affiliation(s)
- Changjiu He
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Jing Wang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Zhenzhen Zhang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Minghui Yang
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Yu Li
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Xiuzhi Tian
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Teng Ma
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Jingli Tao
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Kuanfeng Zhu
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Yukun Song
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Pengyun Ji
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Guoshi Liu
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics and Breeding of the Ministry of Agriculture, Beijing Key Laboratory for Animal Genetic Improvement, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
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11
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Takahashi Y, Hashimoto S, Yamochi T, Goto H, Yamanaka M, Amo A, Matsumoto H, Inoue M, Ito K, Nakaoka Y, Suzuki N, Morimoto Y. Dynamic changes in mitochondrial distribution in human oocytes during meiotic maturation. J Assist Reprod Genet 2016; 33:929-38. [PMID: 27117688 DOI: 10.1007/s10815-016-0716-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 04/11/2016] [Indexed: 11/28/2022] Open
Abstract
PURPOSE The change of mitochondrial distribution in human oocytes during meiotic maturation was assessed using 223 human oocytes donated from patients undergoing fertility treatment between June 2013 and February 2016. METHODS Live cell images of fluorescence-labelled mitochondria in human oocytes were analysed to investigate dynamic changes in mitochondrial distribution during meiotic maturation using a confocal microscope combined with an incubator in the presence or absence of colchicine and cytochalasin B, inhibitors for tubulin and actin filament, respectively. Subcellular distribution of mitochondria in human oocytes was also assessed at various stages using a transmission electron microscope (TEM). RESULTS Live cell imaging analysis revealed that the mitochondria-occupied cytoplasmic area decreased from 83 to 77 % of the total cytoplasmic area around 6 h before germinal vesicle breakdown (GVBD) and that mitochondria accumulated preferentially close to the perinuclear region. Then, the mitochondria-distributed area rapidly increased to 85 % of total cytoplasm at the time of GVBD. On the other hand, there was no significant change in mitochondrial distribution before and after polar body extrusion. Such changes in mitochondrial localization were affected differently by colchicine and cytochalasin B. Most of mitochondria in the cytoplasm formed cluster-like aggregates before GVBD while they distributed homogeneously after GVBD. CONCLUSIONS Most mitochondria localized predominantly in the non-cortical region of the cytoplasm of GV stage-oocytes, while the mitochondria-occupied area decreased transiently before GVBD and increased rapidly to occupy the entire area of the cytoplasm at GVBD by some cytoskeleton-dependent mechanism.
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Affiliation(s)
- Yuki Takahashi
- IVF Namba Clinic, 1-17-28 Minamihorie, Nishi-ku, Osaka, 550-0015, Japan
| | - Shu Hashimoto
- IVF Namba Clinic, 1-17-28 Minamihorie, Nishi-ku, Osaka, 550-0015, Japan.
| | - Takayuki Yamochi
- IVF Namba Clinic, 1-17-28 Minamihorie, Nishi-ku, Osaka, 550-0015, Japan
| | - Hiroya Goto
- IVF Namba Clinic, 1-17-28 Minamihorie, Nishi-ku, Osaka, 550-0015, Japan
| | - Masaya Yamanaka
- IVF Namba Clinic, 1-17-28 Minamihorie, Nishi-ku, Osaka, 550-0015, Japan
| | - Ami Amo
- IVF Namba Clinic, 1-17-28 Minamihorie, Nishi-ku, Osaka, 550-0015, Japan
| | - Hiroshi Matsumoto
- IVF Namba Clinic, 1-17-28 Minamihorie, Nishi-ku, Osaka, 550-0015, Japan
| | - Masayasu Inoue
- IVF Namba Clinic, 1-17-28 Minamihorie, Nishi-ku, Osaka, 550-0015, Japan
| | - Keijiro Ito
- IVF Namba Clinic, 1-17-28 Minamihorie, Nishi-ku, Osaka, 550-0015, Japan
| | - Yoshiharu Nakaoka
- IVF Namba Clinic, 1-17-28 Minamihorie, Nishi-ku, Osaka, 550-0015, Japan
| | - Nao Suzuki
- Department of Obstetrics and Gynecology, St. Marianna University School of Medicine, Kanagawa, Japan
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