Cumulus Cell
Mostrando 1-12 de 23 artigos, teses e dissertações.
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1. Intrafollicular barriers and cellular interactions during ovarian follicle development
Abstract Follicles are composed of different interdependent cell types including oocytes, cumulus, granulosa, and theca cells. Follicular cells and oocytes exchange signaling molecules from the beginning of the development of the primordial follicles until the moment of ovulation. The follicular structure transforms during folliculogenesis; barriers form bet
Anim. Reprod.. Publicado em: 28/11/2019
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2. Effects of green tea polyphenols, insulin-like growth factor I and glucose on developmental competence of bovine oocytes
The present study examined the effects of green tea polyphenols (GTP), insulin-like growth factor-I (IGF-I) and glucose on oocyte in vitro maturation, subsequent embryo development and blastocyst quality in bovine. Cumulus-oocyte complexes (COC) were aspirated from the ovaries and cultured in synthetic oviduct fluid supplemented with MEM amino acids (SOFaa)
R. Bras. Zootec.. Publicado em: 2012-12
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3. Transferência nuclear de células somáticas (TNCS) em ruminantes: aspectos moleculares e produção de embriões. / Somatic cell nuclear transfer (SCNT) in ruminants: the molecular and embryo production.
O sucesso da produção de animais clones por Transferência Nuclear de Células Somáticas (TNCS) envolve múltiplas etapas e cada uma destas pode influenciar a eficiência final da técnica. Assim, para investigar fatores relacionados à TNCS em ruminantes, esse trabalho teve como objetivos: (i) avaliar o efeito de um protocolo alternativo de estimulação
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/12/2010
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4. Effects of the conditioned medium of mesenchymal stem cells on mouse oocyte activation and development
Mesenchymal stem cells (MSCs) have been reported to secrete a variety of cytokines and growth factors acting as trophic suppliers, but little is known regarding the effects of conditioned medium (CM) of MSCs isolated from femurs and tibias of mouse on the artificial activation of mouse oocytes and on the developmental competence of the parthenotes. In the cu
Brazilian Journal of Medical and Biological Research. Publicado em: 2009-06
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5. Expressão de genes candidatos para a aquisição da competência ovocitária em bovinos
The success of the various assisted reproductive techniques depends on oocyte competence. However, the factors involved on its acquisition and the molecular attributes of competent oocyte are generally unknown. In an attempt to assess genes related with oocyte competence we quantify transcripts for candidate genes in oocytes (H1Foo, H2A, H3A, GHR, GDF9, BMP1
Publicado em: 2009
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6. Interação cumulus e oócito no processo de morte celular programada durante a produção de embriões bovinos in vitro / Cumulus-oocyte interaction in programmed cellular death during bovine embryo in vitro production
About 40% of fertilized bovine oocytes do not complete development during the preimplantation period. It is known that the in vitro embryo production system is influenced by several factors, among them, the morphological quality of cumulus-oocyte complexes (COCs). The present work aimed to study the cumulus-oocyte interaction on the process of programmed cel
Publicado em: 2005
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7. Fibroblast Growth Factors and Epidermal Growth Factor Cooperate with Oocyte-Derived Members of the TGFbeta Superfamily to Regulate Spry2 mRNA Levels in Mouse Cumulus Cells1
Mouse oocytes produce members of the transforming growth factor beta (TGFbeta) superfamily, including bone morphogenetic protein 15 (BMP15) and growth differentiation factor 9 (GDF9), as well as fibroblast growth factors (FGFs). These growth factors cooperate to regulate cumulus cell function. To identify potential mechanisms involved in these interactions,
Society for the Study of Reproduction.
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8. RhoA/Rho Kinase Signaling in the Cumulus Mediates Extracellular Matrix Assembly
Cumulus cells surround the oocyte and regulate the production and assembly of the extracellular matrix (ECM) around the cumulus-oocyte complex for its timely interaction with sperm in the oviduct. We recently found that C-C chemokines such as CCL2, CCL7, and CCL9 are produced and stimulate integrin-mediated ECM assembly in the postovulatory cumulus to protec
The Endocrine Society.
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9. Abnormal gene expression in cloned mice derived from embryonic stem cell and cumulus cell nuclei
To assess the extent of abnormal gene expression in clones, we assessed global gene expression by microarray analysis on RNA from the placentas and livers of neonatal cloned mice derived by nuclear transfer (NT) from both cultured embryonic stem cells and freshly isolated cumulus cells. Direct comparison of gene expression profiles of more than 10,000 genes
The National Academy of Sciences.
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10. Role for cumulus cell-produced EGF-like ligands during primate oocyte maturation in vitro
The developmental competence of in vitro-matured (IVM) rhesus macaque cumulus oocyte complexes (COCs) is deficient compared with in vivo-matured (IVM) oocytes. To improve oocyte quality and subsequent embryo development following IVM, culture conditions must be optimized. A series of experiments was undertaken to determine the role of epidermal growth factor
American Physiological Society.
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11. Interleukin-6: An Autocrine Regulator of the Mouse Cumulus Cell-Oocyte Complex Expansion Process
Ovulation has long been regarded as a process resembling an inflammatory response. Recent studies indicate that genes associated with innate immune responses were also expressed during the ovulation process. Because the innate immune genes are induced in cumulus cell oocyte complexes (COCs) later than the inflammation-associated genes, we hypothesize that CO
The Endocrine Society.
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12. Hamster oocyte membrane potential and ion permeability vary with preantral cumulus cell attachment and developmental stage
BioMed Central.