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Meli VS, Donahue RP, Link JM, Hu JC, Athanasiou KA, Liu WF. Isolation and characterization of porcine macrophages and their inflammatory and fusion responses in different stiffness environments. Biomater Sci 2021; 9:7851-7861. [PMID: 34514479 DOI: 10.1039/d1bm00746g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Evaluating the host immune response to biomaterials is an essential step in the development of medical devices and tissue engineering strategies. To aid in this process, in vitro studies, whereby immune cells such as macrophages are cultured on biomaterials, can often expedite high throughput testing of many materials prior to implantation. While most studies to date utilize murine or human cells, the use of porcine macrophages has been less well described, despite the prevalent use of porcine models in medical device and tissue engineering development. In this study, we describe the isolation and characterization of porcine bone marrow- and peripheral blood-derived macrophages, and their interactions with biomaterials. We confirmed the expression of the macrophage surface markers CD68 and F4/80 and characterized the porcine macrophage response to the inflammatory stimulus, bacterial lipopolysaccharide. Finally, we investigated the inflammatory and fusion response of porcine macrophages cultured on different stiffness hydrogels, and we found that stiffer hydrogels enhanced inflammatory activation by more than two-fold and promoted fusion to form foreign body giant cells. Together, this study establishes the use of porcine macrophages in biomaterial testing and reveals a stiffness-dependent effect on biomaterial-induced giant cell formation.
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Affiliation(s)
- Vijaykumar S Meli
- Department of Biomedical Engineering, University of California Irvine, 2412 Engineering Hall, Irvine, CA 92697, USA. .,The Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California Irvine, 2412 Engineering Hall, Irvine, CA 92697, USA
| | - Ryan P Donahue
- Department of Biomedical Engineering, University of California Irvine, 2412 Engineering Hall, Irvine, CA 92697, USA.
| | - Jarrett M Link
- Department of Biomedical Engineering, University of California Irvine, 2412 Engineering Hall, Irvine, CA 92697, USA.
| | - Jerry C Hu
- Department of Biomedical Engineering, University of California Irvine, 2412 Engineering Hall, Irvine, CA 92697, USA.
| | - Kyriacos A Athanasiou
- Department of Biomedical Engineering, University of California Irvine, 2412 Engineering Hall, Irvine, CA 92697, USA.
| | - Wendy F Liu
- Department of Biomedical Engineering, University of California Irvine, 2412 Engineering Hall, Irvine, CA 92697, USA. .,The Edwards Lifesciences Center for Advanced Cardiovascular Technology, University of California Irvine, 2412 Engineering Hall, Irvine, CA 92697, USA.,Department of Chemical and Biomolecular Engineering, University of California Irvine, 2412 Engineering Hall, Irvine, CA 92697, USA.,Department of Molecular Biology and Biochemistry, University of California Irvine, 2412 Engineering Hall, Irvine, CA 92697, USA
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Abstract
This chapter highlights the importance of reproductive technologies that are applied to porcine breeds. Nowadays the porcine industry, part of a high technological and specialized sector, offers high-quality protein food. The development of the swine industry is founded in the development of breeding/genetics, nutrition, animal husbandry, and animal health. The implementation of reproductive technologies in swine has conducted to levels of productivity never reached before. In addition, the pig is becoming an important species for biomedicine. The generation of pig models for human disease, xenotransplantation, or production of therapeutic proteins for human medicine has in fact generated a growing field of interest.
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3
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The influence of zero-valent iron nanoparticles on oocytes and surrounding follicular cells in mice. APPLIED NANOSCIENCE 2019. [DOI: 10.1007/s13204-019-00978-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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4
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Botigelli RC, Razza EM, Pioltine EM, Nogueira MFG. New approaches regarding the in vitro maturation of oocytes: manipulating cyclic nucleotides and their partners in crime. JBRA Assist Reprod 2017; 21:35-44. [PMID: 28333031 PMCID: PMC5365199 DOI: 10.5935/1518-0557.20170010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Several discoveries have been described recently (5-10 years) about the biology of ovarian follicles (oocyte, cumulus cells and granulosa cells), including new aspects of cellular communication, the control of oocyte maturation and the acquisition of oocyte competence for fertilization and further embryo development. These advances are nourishing assisted reproduction techniques (ART) with new possibilities, in which novel culture systems are being developed and tested to improve embryo yield and quality. This mini-review aims to describe how the recent knowledge on the physiological aspects of mammalian oocyte is reflecting as original or revisited approaches into the context of embryo production. These new insights include recent findings on the mechanisms that control oocyte maturation, especially modulating intraoocyte levels of cyclic nucleotides during in vitro maturation using endogenous or exogenous agents. In this mini-review we also discuss the positive and negative effects of these manipulations on the outcoming embryo.
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Affiliation(s)
- Ramon Cesar Botigelli
- Department of Pharmacology, Institute of Bioscience, University of São Paulo State, Botucatu, São Paulo, Brazil
| | - Eduardo Montanari Razza
- Department of Pharmacology, Institute of Bioscience, University of São Paulo State, Botucatu, São Paulo, Brazil
| | - Elisa Mariano Pioltine
- Department of Pharmacology, Institute of Bioscience, University of São Paulo State, Botucatu, São Paulo, Brazil
| | - Marcelo Fábio Gouveia Nogueira
- Department of Pharmacology, Institute of Bioscience, University of São Paulo State, Botucatu, São Paulo, Brazil.,Department of Biological Sciences, Faculty of Sciences and Letters, University of São Paulo State, Assis, São Paulo, Brazil
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Prasad S, Chaube SK. S-nitroso-N-acetyl penicillamine inhibits spontaneous exit from metaphase-II arrest in rat eggs cultured in vitro. Biomed Pharmacother 2016; 84:680-686. [PMID: 27701050 DOI: 10.1016/j.biopha.2016.09.059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 09/14/2016] [Accepted: 09/15/2016] [Indexed: 10/20/2022] Open
Abstract
BACKGROUND Present study was designed to investigate the in vitro effects of nitric oxide (NO) donor such as S-nitroso-N-acetyl penicillamine (SNAP) on spontaneous exit from metaphase-II arrest (SEM-II) in rat eggs cultured in vitro. METHODS Ovulated eggs were denuded and then exposed to various concentrations (0.0, 0.01, 0.1 and 1.0mM) of SNAP for 3h under in vitro culture conditions. The percentage of SEM-II, specific and total phosphorylated cyclin-dependent kinase-1 (Cdk1), cyclin B1 and anaphase promoting complex/cyclosome (APC/C) levels as well as Cdk1 activity were analyzed. RESULTS The SEM-II was associated with a decrease of Thr-161 phosphorylated Cdk1 as well as cyclin B1 levels and increase of Thr-14/Tyr-15 phosphorylated Cdk1, APC/C levels and Cdk1 activity in aged eggs cultured in vitro. On the other hand, SNAP treatment prevented a decrease of Thr-161 phosphorylated Cdk1 as well as cyclin B1 levels and increase of Thr-14/Tyr-15 phosphorylated Cdk1, Cdk1 activity that finally prevented SEM-II in a concentration-dependent manner. However, APC/C level was not affected by SNAP during the course of treatment in vitro. CONCLUSIONS Present data suggest that SNAP prevented SEM-II possibly by increasing high level of NO and thereby maturation promoting factor (MPF) stabilization in rat eggs cultured in vitro. Hence, SNAP could be used to prevent SEM-II that reduces reproductive outcome in several mammalian species.
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Affiliation(s)
- Shilpa Prasad
- Cell Physiology Laboratory, Biochemistry Unit, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, U.P., India
| | - Shail K Chaube
- Cell Physiology Laboratory, Biochemistry Unit, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi, 221005, U.P., India.
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6
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Gasotransmitters in Gametogenesis and Early Development: Holy Trinity for Assisted Reproductive Technology-A Review. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:1730750. [PMID: 27579148 PMCID: PMC4992752 DOI: 10.1155/2016/1730750] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 07/03/2016] [Indexed: 11/23/2022]
Abstract
Creation of both gametes, sperm and oocyte, and their fusion during fertilization are essential step for beginning of life. Although molecular mechanisms regulating gametogenesis, fertilization, and early embryonic development are still subjected to intensive study, a lot of phenomena remain unclear. Based on our best knowledge and own results, we consider gasotransmitters to be essential for various signalisation in oocytes and embryos. In accordance with nitric oxide (NO) and hydrogen sulfide (H2S) physiological necessity, their involvement during oocyte maturation and regulative role in fertilization followed by embryonic development have been described. During these processes, NO- and H2S-derived posttranslational modifications represent the main mode of their regulative effect. While NO represent the most understood gasotransmitter and H2S is still intensively studied gasotransmitter, appreciation of carbon monoxide (CO) role in reproduction is still missing. Overall understanding of gasotransmitters including their interaction is promising for reproductive medicine and assisted reproductive technologies (ART), because these approaches contend with failure of in vitro assisted reproduction.
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Hocher B, Haumann H, Rahnenführer J, Reichetzeder C, Kalk P, Pfab T, Tsuprykov O, Winter S, Hofmann U, Li J, Püschel GP, Lang F, Schuppan D, Schwab M, Schaeffeler E. Maternal eNOS deficiency determines a fatty liver phenotype of the offspring in a sex dependent manner. Epigenetics 2016; 11:539-52. [PMID: 27175980 PMCID: PMC4939931 DOI: 10.1080/15592294.2016.1184800] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Maternal environmental factors can impact on the phenotype of the offspring via the induction of epigenetic adaptive mechanisms. The advanced fetal programming hypothesis proposes that maternal genetic variants may influence the offspring's phenotype indirectly via epigenetic modification, despite the absence of a primary genetic defect. To test this hypothesis, heterozygous female eNOS knockout mice and wild type mice were bred with male wild type mice. We then assessed the impact of maternal eNOS deficiency on the liver phenotype of wild type offspring. Birth weight of male wild type offspring born to female heterozygous eNOS knockout mice was reduced compared to offspring of wild type mice. Moreover, the offspring displayed a sex specific liver phenotype, with an increased liver weight, due to steatosis. This was accompanied by sex specific differences in expression and DNA methylation of distinct genes. Liver global DNA methylation was significantly enhanced in both male and female offspring. Also, hepatic parameters of carbohydrate metabolism were reduced in male and female offspring. In addition, male mice displayed reductions in various amino acids in the liver. Maternal genetic alterations, such as partial deletion of the eNOS gene, can affect liver metabolism of wild type offspring without transmission of the intrinsic defect. This occurs in a sex specific way, with more detrimental effects in females. This finding demonstrates that a maternal genetic defect can epigenetically alter the phenotype of the offspring, without inheritance of the defect itself. Importantly, these acquired epigenetic phenotypic changes can persist into adulthood.
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Affiliation(s)
- Berthold Hocher
- a Department of Basic Medicine , Medical College of Hunan Normal University , Changsha , China.,b Institute of Nutritional Science, University of Potsdam , Nuthetal , Germany.,c IFLb, Laboratoriumsmedizin Berlin GmbH , Berlin , Germany
| | - Hannah Haumann
- d Department of Internal Medicine IV/Nephrology (UKBF) , Charité Campus Benjamin Franklin , Berlin , Germany.,e Center for Cardiovascular Research, Charité Campus Mitte , Berlin , Germany
| | - Jan Rahnenführer
- b Institute of Nutritional Science, University of Potsdam , Nuthetal , Germany
| | | | - Philipp Kalk
- d Department of Internal Medicine IV/Nephrology (UKBF) , Charité Campus Benjamin Franklin , Berlin , Germany.,e Center for Cardiovascular Research, Charité Campus Mitte , Berlin , Germany
| | - Thiemo Pfab
- d Department of Internal Medicine IV/Nephrology (UKBF) , Charité Campus Benjamin Franklin , Berlin , Germany.,f Diaverum Deutschland , Potsdam , Germany
| | - Oleg Tsuprykov
- b Institute of Nutritional Science, University of Potsdam , Nuthetal , Germany.,e Center for Cardiovascular Research, Charité Campus Mitte , Berlin , Germany
| | - Stefan Winter
- g Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology , Stuttgart , Germany.,h University of Tübingen , Tübingen , Germany
| | - Ute Hofmann
- g Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology , Stuttgart , Germany.,h University of Tübingen , Tübingen , Germany
| | - Jian Li
- a Department of Basic Medicine , Medical College of Hunan Normal University , Changsha , China
| | - Gerhard P Püschel
- b Institute of Nutritional Science, University of Potsdam , Nuthetal , Germany
| | - Florian Lang
- i Institute of Physiology, University of Tübingen , Tübingen , Germany
| | - Detlef Schuppan
- j Institute of Translational Immunology, University Medical Center of the Johannes Gutenberg University Mainz , Mainz , Germany.,k Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School , Boston , MA , USA
| | - Matthias Schwab
- g Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology , Stuttgart , Germany.,l Department of Clinical Pharmacology , University Hospital Tübingen , Tübingen , Germany.,m Department of Pharmacy and Biochemistry , University Tübingen , Tübingen , Germany
| | - Elke Schaeffeler
- g Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology , Stuttgart , Germany.,h University of Tübingen , Tübingen , Germany
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Gelaude A, Marin M, Cailliau K, Jeseta M, Lescuyer‐Rousseau A, Vandame P, Nevoral J, Sedmikova M, Martoriati A, Bodart J. Nitric Oxide Donor
s
‐Nitroso‐
n
‐Acetyl Penicillamine (SNAP) Alters Meiotic Spindle Morphogenesis in
Xenopus
Oocytes. J Cell Biochem 2015; 116:2445-54. [DOI: 10.1002/jcb.25211] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 04/22/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Armance Gelaude
- Université Lillel, Sciences et TechnologiesRégulation des Signaux de Division Team, UMR 8576 CNRS, FR3688 CNRSVilleneuve dAscqFrance
| | - Matthieu Marin
- Université Lillel, Sciences et TechnologiesRégulation des Signaux de Division Team, UMR 8576 CNRS, FR3688 CNRSVilleneuve dAscqFrance
| | - Katia Cailliau
- Université Lillel, Sciences et TechnologiesRégulation des Signaux de Division Team, UMR 8576 CNRS, FR3688 CNRSVilleneuve dAscqFrance
| | - Michal Jeseta
- Veterinary Research InstituteBrno ‐ Genetics and ReproductionBrnoCzech Republic
| | - Arlette Lescuyer‐Rousseau
- Université Lillel, Sciences et TechnologiesRégulation des Signaux de Division Team, UMR 8576 CNRS, FR3688 CNRSVilleneuve dAscqFrance
| | - Pauline Vandame
- Université Lillel, Sciences et TechnologiesRégulation des Signaux de Division Team, UMR 8576 CNRS, FR3688 CNRSVilleneuve dAscqFrance
| | - Jan Nevoral
- Czech University of Life Sciences in PragueFaculty of AgrobiologyFood and Natural Resources, Department of Veterinary SciencesPragueCzech Republic
| | - Marketa Sedmikova
- Czech University of Life Sciences in PragueFaculty of AgrobiologyFood and Natural Resources, Department of Veterinary SciencesPragueCzech Republic
| | - Alain Martoriati
- Université Lillel, Sciences et TechnologiesRégulation des Signaux de Division Team, UMR 8576 CNRS, FR3688 CNRSVilleneuve dAscqFrance
| | - Jean‐François Bodart
- Université Lillel, Sciences et TechnologiesRégulation des Signaux de Division Team, UMR 8576 CNRS, FR3688 CNRSVilleneuve dAscqFrance
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Romero-Aguirregomezcorta J, Santa ÁP, García-Vázquez FA, Coy P, Matás C. Nitric oxide synthase (NOS) inhibition during porcine in vitro maturation modifies oocyte protein S-nitrosylation and in vitro fertilization. PLoS One 2014; 9:e115044. [PMID: 25542028 PMCID: PMC4277276 DOI: 10.1371/journal.pone.0115044] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Accepted: 11/18/2014] [Indexed: 02/07/2023] Open
Abstract
Nitric oxide (NO) is a molecule involved in many reproductive processes. Its importance during oocyte in vitro maturation (IVM) has been demonstrated in various species although sometimes with contradictory results. The objective of this study was to determine the effect of NO during IVM of cumulus oocyte complexes and its subsequent impact on gamete interaction in porcine species. For this purpose, IVM media were supplemented with three NOS inhibitors: NG-nitro-L-arginine methyl ester (L-NAME), NG-monomethyl-L-arginine (L-NMMA) and aminoguanidine (AG). A NO donor, S-nitrosoglutathione (GSNO), was also used. The effects on the cumulus cell expansion, meiotic resumption, zona pellucida digestion time (ZPdt) and, finally, on in vitro fertilization (IVF) parameters were evaluated. The oocyte S-nitrosoproteins were also studied by in situ nitrosylation. The results showed that after 42 h of IVM, AG, L-NAME and L-NMMA had an inhibitory effect on cumulus cell expansion. Meiotic resumption was suppressed only when AG was added, with 78.7% of the oocytes arrested at the germinal vesicle state (P<0.05). Supplementation of the IVM medium with NOS inhibitors or NO donor did not enhance the efficiency of IVF, but revealed the importance of NO in maturation and subsequent fertilization. Furthermore, protein S-nitrosylation is reported for the first time as a pathway through which NO exerts its effect on porcine IVM; therefore, it would be important to determine which proteins are nitrosylated in the oocyte and their functions, in order to throw light on the mechanism of action of NO in oocyte maturation and subsequent fertilization.
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Affiliation(s)
- Jon Romero-Aguirregomezcorta
- Department of Physiology, Veterinary Faculty, University of Murcia, International Excellence Campus for Higher Education and Research (Campus Mare Nostrum), Murcia, Spain
- Institute for Biomedical Research of Murcia (IMIB), Murcia, Spain
| | - Ángela Patricia Santa
- Department of Physiology, Veterinary Faculty, University of Murcia, International Excellence Campus for Higher Education and Research (Campus Mare Nostrum), Murcia, Spain
| | - Francisco Alberto García-Vázquez
- Department of Physiology, Veterinary Faculty, University of Murcia, International Excellence Campus for Higher Education and Research (Campus Mare Nostrum), Murcia, Spain
- Institute for Biomedical Research of Murcia (IMIB), Murcia, Spain
| | - Pilar Coy
- Department of Physiology, Veterinary Faculty, University of Murcia, International Excellence Campus for Higher Education and Research (Campus Mare Nostrum), Murcia, Spain
- Institute for Biomedical Research of Murcia (IMIB), Murcia, Spain
| | - Carmen Matás
- Department of Physiology, Veterinary Faculty, University of Murcia, International Excellence Campus for Higher Education and Research (Campus Mare Nostrum), Murcia, Spain
- Institute for Biomedical Research of Murcia (IMIB), Murcia, Spain
- * E-mail:
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10
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Santana PDPB, Silva TVG, da Costa NN, da Silva BB, Carter TF, Cordeiro MDS, da Silva BJM, Santos SDSD, Herculano AM, Adona PR, Ohashi OM, Miranda MDS. Supplementation of bovine embryo culture medium with L-arginine improves embryo quality via nitric oxide production. Mol Reprod Dev 2014; 81:918-27. [PMID: 25236163 DOI: 10.1002/mrd.22387] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2014] [Accepted: 08/01/2014] [Indexed: 12/30/2022]
Abstract
Nitric oxide (NO) is a cell-signaling molecule that regulates a variety of molecular pathways. We investigated the role of NO during preimplantation embryonic development by blocking its production with an inhibitor or supplementing in vitro bovine embryo cultures with its natural precursor, L-arginine, over different periods. Endpoints evaluated included blastocyst rates, development kinetics, and embryo quality. Supplementation with the NO synthase inhibitor N-Nitro-L-arginine-methyl ester (L-NAME) from Days 1 to 8 of culture decreased blastocyst (P < 0.05) and hatching (P < 0.05) rates. When added from Days 1 to 8, 50 mM L-arginine decreased blastocyst rates (P < 0.001); in contrast, when added from Days 5 to 8, 1 mM L-arginine improved embryo hatching rates (P < 0.05) and quality (P < 0.05) as well as increased POU5F1 gene expression (P < 0.05) as compared to the untreated control. Moreover, NO levels in the medium during this culture period positively correlated with the increased embryo hatching rates and quality (P < 0.05). These data suggest exerts its positive effects during the transition from morula to blastocyst stage, and that supplementing the embryo culture medium with L-arginine favors preimplantation development of bovine embryos.
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11
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Pandey AN, Chaube SK. Reduction of nitric oxide level leads to spontaneous resumption of meiosis in diplotene-arrested rat oocytes cultured in vitro. Exp Biol Med (Maywood) 2014; 240:15-25. [PMID: 25092827 DOI: 10.1177/1535370214545024] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The present study was aimed to investigate whether a decrease of nitric oxide (NO) level is beneficial for sponateous resumptiom of meiosis in diplotene-arrested oocytes cultured in vitro. For this purpose, diplotene-arrested oocytes were collected from ovary of immature female rats after a single subcutaneous injection of 20 IU pregnant mare's serum gonadotropins (PMSG) for 48 h. In vitro effects of S-nitroso-l-acetyl penicillamine (SNAP; an NO donor) and aminoguanidine (AG; an inducible NOS [iNOS] inhibitor), intracellular NO, cyclic guanosine monophosphate (cGMP), Cdc25B, Thr-14/Tyr-15 and Thr-161 phosphorylated cyclin-dependent kinase-1 (CDK1), and cyclin B1 levels were analyzed. The SNAP inhibited spontaneous meiotic resumption form diplotene arrest in a concentration-dependent manner, while AG-induced meiotic resumption form diplotene in 0.1 mmol/L 3-isobutyl-1-methylxanthine (IBMX)-treated oocytes in a concentration-dependent manner. The intracellular NO as well as cGMP levels were decreased significantly during spontaneous meiotic resumption from diplotene arrest. The reduction of Cdc25B expression level was associated with the accumulation of Thr-14/Tyr-15 phosphorylated CDK1 level. However, Thr-161 phosphorylated CDK1 as well as cyclin B1 levels were reduced significantly during meiotic resumption from diplotene arrest. Taken together, these data suggest that the inhibition of iNOS expression leads to a decrease of NO and cGMP levels thereby decreasing Cdc25B level. The reduced CDC25 B level leads to accumulation of Thr-14/Tyr-15 phosphorylated CDK1 level. As a result, Thr-161 phosphorylated CDK1 as well as cyclin B1 levels are decreased leading to maturation-promoting factor (MPF) inactivation. The inactive MPF finally induced meiotic resumption from diplotene stage in rat oocytes cultured in vitro.
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Affiliation(s)
- Ashutosh N Pandey
- Cell Physiology Laboratory, Department of Zoology, Banaras Hindu University, Varanasi 221005, India
| | - Shail K Chaube
- Cell Physiology Laboratory, Department of Zoology, Banaras Hindu University, Varanasi 221005, India
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Chung MK, Lao TT, Ting YH, Wong TW, Leung TY. Seasonality of fetal trisomy 21--have ambient air pollutants played a role? J Matern Fetal Neonatal Med 2014; 28:552-7. [PMID: 24827600 DOI: 10.3109/14767058.2014.924104] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE To examine the seasonality of fetal trisomy 21 and its relationship with ambient air pollutants. METHODS The averaged incidence by month-of-conception of the 113 cases (2002-2009) in our registry was correlated with month of conception and monthly ambient levels of nitrogen oxides (NOx, NO and NO2), sulfur dioxide, carbon monoxide, and ozone as reported by the Hong Kong Environmental Protection Department at the month of, and four-week after, conception. RESULTS The incidence was highest in February (3.45/1000 births) and lowest in October (1.28/1000 births), and showed a significant difference (p = 0.003) and positive correlation (p = 0.003) from winter to autumn. It was also correlated with NO (p = 0.017) and inversely with ozone (p = 0.014) at conception. CONCLUSIONS Seasonal variation in incidence of fetal trisomy 21 was correlated with ambient levels of nitric oxides and ozone. The role of environmental pollutants on fetal aneuploidy warrants further investigation.
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Affiliation(s)
- Man-Kin Chung
- Department of Obstetrics & Gynaecology, The Chinese University of Hong Kong , Prince of Wales Hospital , Hong Kong and
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13
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Hemmings KE, Maruthini D, Vyjayanthi S, Hogg JE, Balen AH, Campbell BK, Leese HJ, Picton HM. Amino acid turnover by human oocytes is influenced by gamete developmental competence, patient characteristics and gonadotrophin treatment. Hum Reprod 2013; 28:1031-44. [PMID: 23335609 PMCID: PMC3600837 DOI: 10.1093/humrep/des458] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
STUDY QUESTION Can amino acid profiling differentiate between human oocytes with differing competence to mature to metaphase II (MII) in vitro? SUMMARY ANSWER Oocytes which remained arrested at the germinal vesicle (GV) stage after 24 h of in vitro maturation (IVM) displayed differences in the depletion/appearance of amino acids compared with oocytes which progressed to MII and patient age, infertile diagnosis and ovarian stimulation regime significantly affected oocyte amino acid turnover during IVM. WHAT IS KNOWN ALREADY Amino acid profiling has been proposed as a technique which can distinguish between human pronucleate zygotes and cleavage stage embryos with the potential to develop to the blastocyst stage and implant to produce a pregnancy and those that arrest. Most recently, the amino acid turnover by individual bovine oocytes has been shown to be predictive of oocyte developmental competence as indicated by the gamete's capacity to undergo fertilization and early cleavage divisions in vitro. STUDY DESIGN, SIZE, DURATION The study was conducted between March 2005 and March 2010. A total of 216 oocytes which were at the GV or metaphase I (MI) stages at the time of ICSI were donated by 67 patients. PARTICIPANTS/MATERIALS, SETTINGS, METHODS The research was conducted in university research laboratories affiliated to a hospital-based infertility clinic. Oocytes were cultured for 24 h and the depletion/appearance of amino acids was measured during the final 6 h of IVM. Amino acid turnover was analysed in relation to oocyte meiotic progression, patient age, disease aetiology and controlled ovarian stimulation regime. MAIN RESULTS AND THE ROLE OF CHANCE The depletion/appearance of key amino acids was linked to the maturation potential of human oocytes in vitro. Oocytes which arrested at the GV stage (n = 9) depleted significantly more valine and isoleucine than those which progressed to MI (n = 32) or MII (n = 107) (P < 0.05). Glutamate, glutamine, arginine and valine depletion or appearance differed in MII versus degenerating oocytes (n = 20) (P < 0.05). Glutamine, arginine, methionine, phenylalanine, total depletion and total turnover all differed in oocytes from patients aged < 35 years versus patients ≥35 years (P < 0.05). MII oocytes obtained following ovarian stimulation with recombinant FSH depleted more isoleucine (P < 0.05) and more alanine and lysine (P < 0.05) appeared than oocytes from hMG-stimulated cycles. MII oocytes from patients with a polycystic ovary (PCO) morphology (n = 33) depleted more serine (P < 0.05) than oocytes from women with normal ovaries (n = 61). LIMITATIONS, REASONS FOR CAUTION Immature oocytes collected at the time of ICSI were used as the model for human oocyte maturation. These oocytes have therefore failed to respond to the ovulatory hCG trigger in vivo (they are meiotically incompetent), and have limited capacity to support embryo development in vitro. The lack of cumulus cells and stress of the conditions in vitro may have influenced turnover of amino acids, and owing to the small sample sizes further studies are required to confirm these findings. WIDER IMPLICATIONS OF THE FINDINGS The findings provide support for the hypothesis that oocyte metabolism reflects oocyte quality. Longitudinal studies are required to link these functional metabolic indices of human oocyte quality with embryo developmental competence. Oocyte amino acid profiling may be a useful tool to quantify the impact of new assisted reproduction technologies (ART) on oocyte quality. STUDY FUNDING/COMPETING INTERESTS This project was funded by the UK Biology and Biotechnology Research Council (BB/C007395/1) and the Medical Research Council (G 0800250). K.E.H was in receipt of a British Fertility Society/Merck Serono studentship. H.J.L. is a shareholder in Novocellus Ltd, a company which seeks to devise a non-invasive biochemical test of embryo health.
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Affiliation(s)
- K E Hemmings
- Division of Reproduction and Early Development, University of Leeds, Leeds LS2 9JT, UK.
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Jeseta M, Marin M, Tichovska H, Melicharova P, Cailliau-Maggio K, Martoriati A, Lescuyer-Rousseau A, Beaujois R, Petr J, Sedmikova M, Bodart JF. Nitric oxide-donor SNAP induces Xenopus eggs activation. PLoS One 2012; 7:e41509. [PMID: 22911804 PMCID: PMC3402422 DOI: 10.1371/journal.pone.0041509] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Accepted: 06/22/2012] [Indexed: 12/11/2022] Open
Abstract
Nitric oxide (NO) is identified as a signaling molecule involved in many cellular or physiological functions including meiotic maturation and parthenogenetic activation of mammalian oocytes. We observed that nitric oxide donor SNAP was potent to induce parthenogenetic activation in Xenopus eggs. NO-scavenger CPTIO impaired the effects of SNAP, providing evidence for the effects of the latter to be specific upon NO release. In Xenopus eggs, SNAP treatment induced pigment rearrangement, pronucleus formation and exocytosis of cortical granules. At a biochemical level, SNAP exposure lead to MAPK and Rsk inactivation within 30 minutes whereas MPF remained active, in contrast to calcium ionophore control where MPF activity dropped rapidly. MAPK inactivation could be correlated to pronuclear envelope reformation observed. In SNAP-treated eggs, a strong increase in intracellular calcium level was observed. NO effects were impaired in calcium-free or calcium limited medium, suggesting that that parthenogenetic activation of Xenopus oocytes with a NO donor was mainly calcium-dependent.
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Affiliation(s)
- Michal Jeseta
- Veterinary Research Institute, Department of Genetics and Reproduction, Brno, Czech Republic.
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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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