Ovarian Development
Mostrando 1-12 de 261 artigos, teses e dissertações.
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1. Growth and Differentiation Factor-9 Supplementation Affects Viability and Morphology of Preantral Follicles in Equine Ovarian Fragments During Short-term in vitro Culture
Abstract This study aimed to evaluate different concentrations of growth and differentiation factor-9 (GDF-9) on the development and maintenance of equine preantral follicle morphology during short-term in vitro culture. Ovaries (n=5) from five mares were collected from a local slaughterhouse and transported to the laboratory, where nine fragments (5x5x1mm)
Braz. arch. biol. technol.. Publicado em: 20/12/2019
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2. Identification of differentially expressed microRNAs in middle-size ovarian follicles of Meishan and Duroc sows
ABSTRACT This study aimed to investigate the roles of miRNA in the development of ovarian follicles in sows with high ovulation rate. The miRNA expression profiles in middle-size ovarian follicles between Meishan and Duroc sows were characterized by Affymetrix miRNA GeneChip. Seven differentially expressed miRNA were identified. KEGG pathways analyzed the pr
R. Bras. Zootec.. Publicado em: 28/11/2019
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3. 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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4. Folliculogenesis and acquisition of oocyte competence in cows
Abstract IVF success depends on hundreds of factors and details but the oocyte quality remains the most important and problematic issue. All antral follicles contain oocytes and all of them have that have reached their full size, can be aspirated, can mature and can be fertilized in vitro. But only a few will make it to embryo unless harvested at a very spec
Anim. Reprod.. Publicado em: 28/11/2019
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5. Evaluation of stemness marker expression in bovine ovarian granulosa cells
Abstract The objective of this study was to assess the stemness marker expressions (Oct4, Nanog, and Sox2) of granulosa cells (GCs) collected from bovine ovarian follicles and in vitro expansion. The single bovine ovarian follicles were isolated and categorized into 4 groups according to their diameter including group A (<2 mm), group B (2-3 mm), group C (3-
Anim. Reprod.. Publicado em: 25/11/2019
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6. Powdered coconut water (ACP 406®) as an alternative base culture medium for in vitro culture of goat preantral follicles enclosed in ovarian tissue
Abstract This study evaluated a powdered coconut water solution (ACP 406®) as a base culture medium on the in vitro survival and development of in situ goat preantral follicles. The ovarian fragments were either immediately fixed in Carnoy solution (non-cultured control) or individually cultured for 2 or 6 days. The following culture media (all containing 1
Anim. Reprod.. Publicado em: 25/11/2019
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7. Immunohistochemical localization of progesterone receptors alpha (PRA) in ovary of the pseudopregnant rabbit
Abstract Progesterone plays an important role in the reproductive function and follicular development in mammals. The aim of the present study was to examine the localization of progesterone receptor alpha (PRA) in ovary of pseudopregnant rabbit by immunohistochemical methods. Samples were collected from 14 h. to 18 days of pseudopregnancy. At the first stag
Anim. Reprod.. Publicado em: 25/11/2019
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8. Effect of Bone Morphogenetic Protein 6 (BMP6) on Chicken Granulose Cells Proliferation and Progesterone Synthesis
ABSTRACT There is increasing evidence that bone morphogenetic protein 6 (BMP6) plays critical roles in regulating various stages of ovarian follicle development in mammals. However, the mechanisms of regulation of BMP6 in the chicken ovary remain unclear. In this study, mRNA and protein expression level of BMP6 in chicken ovarian follicles at different devel
Braz. J. Poult. Sci.. Publicado em: 19/08/2019
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9. Growth hormone on ovarian morphology of lambaris (Astyanax bimaculatus) after induced spawning
RESUMO: O Lambari Astyanax bimaculatus é um peixe ovíparo de desova múltipla que é reprodutivamente ativo durante todo o ano, o que o torna promissor para cultivo e pesquisa. Este trabalho avalia histologicamente os ovários de lambaris submetidos à desova artificial, induzida pelo extrato hipofisário (grupo controle) e o efeito do hormônio de cresci
Cienc. Rural. Publicado em: 29/07/2019
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10. Ovarian development and spawning of Macrobrachium amazonicum (Crustacea, Decapoda)
RESUMO Das espécies nativas de camarões da América do Sul, Macrobrachium amazonicum (Heller, 1862) é a mais importante para fins de aquicultura, possuindo elevado valor comercial. Devido à sua importância, este estudo objetivou avaliar a plasticidade fenotípica de fêmeas da espécie em relação ao desenvolvimento gonadal, e determinar o tipo de deso
Iheringia, Sér. Zool.. Publicado em: 15/07/2019
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11. Quality control and characterization of the testicles and ovaries of irradiated Anastrepha obliqua from Brazil
ABSTRACT: With the aim of making the application of the Sterile Insect Technique (SIT) feasible in the management of the West Indian fruit fly in Brazil, Anastrepha obliqua (Macquart) (Diptera: Tephritidae), a number of quality parameters required by the SIT were investigated in this study. The aim was to verify the influence of a range of doses of gamma rad
Sci. agric. (Piracicaba, Braz.). Publicado em: 01/07/2019
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12. Reviewing the characteristics of BRCA and PALB2-related cancers in the precision medicine era
Abstract Germline mutations in BRCA1 and BRCA2 (BRCA) genes confer high risk of developing cancer, especially breast and ovarian tumors. Since the cloning of these tumor suppressor genes over two decades ago, a significant amount of research has been done. Most recently, monoallelic loss-of-function mutations in PALB2 have also been shown to increase the ris
Genet. Mol. Biol.. Publicado em: 29/04/2019