Placentome
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Relationship between fetal biometric assessment by ultrasonography and neonatal lamb vitality, birth weight and growth
Abstract Ultrasonographic examination of pregnant ewes can enable the identification of perinatal abnormalities and establish prenatal assistance responsible for minimizing morbidity and perinatal mortality. Therefore, we aimed to evaluate the feasibility of a fetal biometric analysis by ultrasonography to predict neonatal vitality and lamb growth during the
Anim. Reprod.. Publicado em: 25/11/2019
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2. Avaliação de componentes estruturais do placentomo da vaca Nelore
This study was conducted to better understand the morphologic characteristics of the placentome of the Nelore cow throughout gestation. The experiment was conducted in labs of the Veterinary School of the Federal University of Minas Gerais and in the Cytology, Histology and Embryology lab of the Federal University of Uberlandia, using uteri of 52 Nelore cows
Publicado em: 2009
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3. Influência da idade gestacional sobre as taxas de proliferação e apoptose placentária em bovinos / Influence of gestational stage on cell proliferation and apoptosis in bovine placenta
A placenta dos mamíferos é um órgão transitório formado pela justaposição das membranas fetais e tecidos maternos, sendo responsável pelas trocas fisiológicas entre o feto e a mãe e pela síntese de hormônios fundamentais para o sucesso da gestação. O crescimento placentário e a nutrição fetal requerem altas taxas de crescimento e diferencia�
Publicado em: 2009
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4. Histological and BMP and Wnt gene expression evaluation in the bovine endometrium during embryo implantation / Avaliação histologica e da expressão genica de BMP e Wnt no endometrio durante a implantação embrionaria em bovinos
A implantação embrionária implica em alterações profundas do ambiente uterino, cujos eventos devem obedecer uma sincronia temporal e espacial com o estágio do desenvolvimento embrionário. Qualquer desequilíbrio nesta sincronia resulta em interrupção da gestação e o desconhecimento dos mecanismos que atuam nas interações materno-fetais inviabili
Publicado em: 2009
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5. Expression of mRNA of the VEGF, Flt-1 and KDR in placentome, interplacentomal areas and gestational corpus luteum in different phases of pregnancy in cloned and non-cloned bovines / Expressão do mRNA do VEGF, FIt-1 e KDR no placentoma, região interplacentomal e corpo lúteo em diferentes fases gestacionais em bovinos clonados e não clonados
The VEGF is a specific endothelial mitogenic factor that promotes feto-maternal cell differentiation in placenta through binding to its receptors (Flt-1 and KDR). Their expression is controlled by autocrine and paracrine mechanisms that are associated to placenta development. The bovine placenta was used in this study as a model due to easiness of evaluation
Publicado em: 2006
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6. Apoptose em placenta proveniente de bovinos clonados / Apoptosis in bovine cloned placenta
The study of placenta from somatic cell nuclear transfer pregnancy originated a new model of study after the commercial production of bovine nuclear transfer clones, this technique requires caesarean section, that allows collection of fetal membranes. Alterations as differences in the placentomes total number, size, villous trees, umbilical cord and new born
Publicado em: 2006
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7. Studies on the distribution of binucleate cells in the placenta of the sheep with a monoclonal antibody SBU-3.
The distribution of cells recognised by the monoclonal antibody SBU-3 raised against trophoblast microvilli during development of the sheep placenta was investigated using the indirect immunoperoxidase technique. At 21 days of gestation, the placental antigen recognised by the monoclonal antibody SBU-3 was observed in the binucleate cells in the trophoblast
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8. Pregnancy status and fetal prion genetics determine PrPSc accumulation in placentomes of scrapie-infected sheep
Ovine scrapie is a fatal neurodegenerative disorder that may be transmitted through exposure to infected uterine and placental tissues. Susceptibility to scrapie is primarily controlled by polymorphisms in the prion protein (PrP) gene. Scrapie in the U.S. Suffolk breed and in many breeds in Europe occurs in sheep homozygous for glutamine (171QQ), but rarely
The National Academy of Sciences.
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9. Calcium-dependent, cyclic nucleotide-independent steroidogenesis in the bovine placenta.
Dispersed bovine placental cells (fetal cotyledon and maternal caruncle) were shown to synthesize progesterone. To determine if their steroidogenic activity could be modulated by a cyclic nucleotide-mediated process, we added luteinizing hormone, 8-bromoadenosine 3',5'-monophosphate, 8-bromoguanosine 3',5'-monophosphate, adenosine, or cholera toxin to disper