Placental Vascularization
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. Reduced placental volume and flow in severe growth restricted fetuses
OBJECTIVES: To evaluate placental volume and vascular indices in pregnancies with severe fetal growth restriction and determine their correlations to normal reference ranges and Doppler velocimetry results of uterine and umbilical arteries. METHODS: Twenty-seven fetuses with estimated weights below the 3rd percentile for gestational age were evaluated. Pla
Clinics. Publicado em: 2016-06
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2. Is Doppler ultrasound useful for evaluating gestational trophoblastic disease?
Doppler ultrasound is a non-invasive method for evaluating vascularization and is widely used in clinical practice. Gestational trophoblastic neoplasia includes a group of highly vascularized malignancies derived from placental cells. This review summarizes data found in the literature regarding the applications of Doppler ultrasound in managing patients wit
Clinics. Publicado em: 2015-12
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3. Ovulação e desenvolvimento uterino, placentário e fetal em marrãs gestantes tratadas com tiroxina
The aim of this study was to evaluate the effect of administration of thyroxine on ovulation and fetal and placental, uterine development in gilts at 70 days of gestation. 20 gilts, middle-sisters, and daughters of F1 females with a male, ¾ Landrace X ¼ Large White were used. At 150 days of age, i.e., before first heat, the animals were randomly divided in
Publicado em: 2009
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4. Measurements of placental volume and vascular indices by three-dimensional ultrasound power Doppler in normal pregnancies / Mensuração do volume e quantificação dos índices vasculares placentários pela ultra-sonografia tridimensional com power Doppler em gestações normais
Objectives: The purpose of this study was to construct normograms of placental volume and placental vascular indices in normal gestations according to gestational age and fetal weight by three dimensional ultrasound power Doppler. Methods: A study was performed with 280 normal pregnant women presenting 12 to 38 weeks of pregnancy, during the period between M
Publicado em: 2008
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5. Efeitos da estimulação nervosa elétrica transcutânea na vascularização placentária de ratas com restrição induzida ao fluxo uterino.
Introdução: Frente aos altos índices de morbimortalidade fetal relacionados a gestações complicadas por insuficiência placentária e restrição do crescimento intra-uterino e baseado em trabalhos que citam a Estimulação Nervosa Elétrica Transcutânea (TENS) como forma de tratamento da insuficiência placentária, o objetivo desse estudo foi avaliar
Publicado em: 2008
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6. Immunolocalization of VEGF, bFGF and their receptors in the bovine placenta and influence of these growth factors on progesterone production from placental cells in culture / Imunolocalização do VEGF, bFGF e seus receptores na placenta bovina e influência destes fatores sobre a produção de progesterona pelas células placentárias em cultura
Placental establishment and function are dependent on intense vascularization. Placental vasculogenesis and angiogenesis are modulated by several factors, including VEGF (vascular endothelial growth factor) and bFGF (basic fibroblast growth factor). Although the role of VEGF and bFGF during vascularization is already well established, some studies have indic
Publicado em: 2005
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7. A subplacenta da paca (Agouti paca, Linnaeus 1766) / The subplacenta of the paca (Agouti paca, Linnaeus 1766)
The rodents of suborder hystricomorph, in which is classified the Agouti paca, present hemochorial type placentation and develops an unique structure known as subplacenta. In spite of many report of its presence in several species, the possible functions of this structure related to placenta and pregnancy remains speculative, mainly due to the diversity of f
Publicado em: 2005
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8. Development placental in bovines obtained by natural gestation and by in vitro fertilization / Desenvolvimento placentário em bovinos obtidos por gestações naturais e por fecundação in vitro
The main goal of this study was to describe morphology and the early gestational development of 15 to 70 day-old bovine embryos obtained by natural mating and 35 day-old bovine embryos obtained by in vitro fertilization (IFV) technique. One hundred and forty-one concepts originated by natural mating and seven by IVF technique were used. All concepts were dis
Publicado em: 2005
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9. Estudo morfologico, morfometrico e estereologico da placenta e tecidos fetais, na transmissão transplacentaria de Trypanosoma Cruzi em camundongos
Morphologic alterations of placentas and foetus of Mus musculus infected with RAL strain of Trypanosoma cruzi were investigated by histopathological, morphometrical and stereological methods. On the 7th day of pregnancy, ten female swiss mice, weighing approximately 30-35gr were i.p. inoculated with 2x105 blood trypomastigotes of RAL strain. The animals were
Publicado em: 2000
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10. Essential role for p38α mitogen-activated protein kinase in placental angiogenesis
The p38 family of mitogen-activated protein kinases (MAPKs) mediates signaling in response to environmental stresses and inflammatory cytokines, but the requirements for the p38 MAPK pathway in normal mammalian development have not been elucidated. Here, we show that targeted disruption of the p38α MAPK gene results in homozygous embryonic lethality because
The National Academy of Sciences.
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11. Placental Failure in Mice Lacking the Mammalian Homolog of Glial Cells Missing, GCMa
The GCM family of transcription factors consists of Drosophila melanogaster GCM, an important regulator of gliogenesis in the fly, and its two mammalian homologs, GCMa and GCMb. To clarify the function of these mammalian homologs, we deleted GCMa in mice. Genetic ablation of murine GCMa (mGCMa) is embryonic lethal, with mice dying between 9.5 and 10 days pos
American Society for Microbiology.
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12. Provirus integration into a gene encoding a ubiquitin-conjugating enzyme results in a placental defect and embryonic lethality.
Ubiquitin-conjugating enzymes (E2 or Ubc) constitute a family of conserved proteins that play a key role in ubiquitin-dependent degradation of proteins in eukaryotes. We describe here a transgenic mouse strain where retrovirus integration into an Ubc gene, designated UbcM4, results in a recessive-lethal mutation. UbcM4 is the mouse homologue of the previousl