Hemochorial
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Placentação em roedores da família Cricetidae - Sigmodontinae / Placentation in rodents of family Cricetidae Sigmodontinae
Placenta is found only in mammals and it is result of the success of blastocyst implantation in the uterus, representing a functional organ to maternal-fetal exchanges and it is also an important endocrine organ. The Family Cricetidae and Subfamily Sigmodontinae include the rats and mice from South America. Due to the similarity of both the placenta morpholo
Publicado em: 2009
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2. Avaliação da espressão de glicoproteinas potencialmente especificas na membrana plasmatica de celulas Natural Killer uterinas de camundogos / Evaluation of expression of potentially specific glycoproteins in plasmatic membrane of mouse uterine Natural Killer
The phenomenon of pregnancy in mammalians with hemochorial type placenta ions where the allogeneic fetus presenting the half of gene from paternal origins growth in tight contact with maternal tissues, without triggering the rejections responses of maternal immune system is still a non-solved question of immunology of reproduction. The cross-talk at maternal
Publicado em: 2006
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3. 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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4. Placentation in rock cavies, Kerodon rupestris (Wied, 1820) / Placentação em mocós, Kerodon rupestris Wied, 1820
Placentation studies of fourteen rock cavy females in different gestation phases were conducted. Females were pre-anesthetized associating ketamine chloridrate (15mg/kg) and midazolan (1mg/kg). Soon afterwards, they were anesthetized by isoflurane inhalation in association with oxygen at 100% saturation. After anesthesia, the surgery allowed to exhibit fetal
Publicado em: 2004
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5. Estudo Macro e Microscópico da Placenta de Termo de Capivara (Hydrochaeris hydrochaeris - Carleton, M. D. 1984) / Macroscopic and microscopic study of mature capybara placenta (Hydrochaeris hydrochaeris - CARLETON, M. D. 1984)
South and Central America are the natural habitat of the capybara, in the areas that go from Panama to Argentina, including the Andes region. These animals are herbivorous, diurnal, semi-aquatic, gregarious and docile; they live in large groups and are potentially important for the production of high quality meat, skin and oils, largely utilized in popular m
Publicado em: 2001
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6. Comparative aspects of trophoblast development and placentation
Based on the number of tissues separating maternal from fetal blood, placentas are classified as epitheliochorial, endotheliochorial or hemochorial. We review the occurrence of these placental types in the various orders of eutherian mammals within the framework of the four superorders identified by the techniques of molecular phylogenetics. The superorder A
BioMed Central.
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7. Fatal placental hemorrhage in pregnant CD-1 mice following one oral dose of T-2 toxin.
Forty-eight hours after oral administration of a single dose (3.0 mg/kg BW) of T-2 toxin to mice on days 7, 8, 10, 11 and 12 of pregnancy, 17% maternal mortality following vaginal hemorrhage was encountered. Necropsy examination of the dead females revealed that massive hemorrhages originating from the placental regions had occurred into the reproductive tra
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8. Trophoblast Stem Cells: Models for Investigating Trophectoderm Differentiation and Placental Development
The placenta is an ephemeral organ containing diverse populations of trophoblasts that are all derived from the embryonic trophectoderm but have morphological, functional, and molecular diversity within and across species. In hemochorial placentation, these cells play especially important roles, interfacing with and modifying the cells of the maternal decidu
The Endocrine Society.
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9. Human Cytomegalovirus Infection of Placental Cytotrophoblasts In Vitro and In Utero: Implications for Transmission and Pathogenesis
Human cytomegalovirus (CMV) is the leading cause of prenatal viral infection. Affected infants may suffer intrauterine growth retardation and serious neurologic impairment. Analysis of spontaneously aborted conceptuses shows that CMV infects the placenta before the embryo or fetus. In the human hemochorial placenta, maternal blood directly contacts syncytiot
American Society for Microbiology.
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10. The steady state concentration gradients of an electron-dense marker (ferritin in the three-layered hemochorial placenta of the rabbit.
Ferritin was injected into the fetal or the maternal circulation of 27-29-day-pregnant rabbits. After the occurrence of a quasi-steady state, the placentas were prepared for electron microscopy. Ferritin particles were counted in the electron micrographs in the fetal capillaries, in the maternal blood spaces, and in the two interstitial compartments of the t
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11. Listeriosis in the Pregnant Guinea Pig: a Model of Vertical Transmission
Feto-placental infections represent a major cause of pregnancy complications, and yet the underlying molecular and cellular mechanisms of vertical transmission are poorly understood. Listeria monocytogenes, a facultative intracellular pathogen, is one of a group of pathogens that are known to cause feto-placental infections in humans and other mammals. The p
American Society for Microbiology.
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12. Recombinant human uteroglobin suppresses cellular invasiveness via a novel class of high-affinity cell surface binding site.
The mechanism(s) that regulates invasion of trophoblasts through the uterine epithelium during embryo implantation and nidation in hemochorial placental mammals is poorly understood. While limited trophoblast invasion is essential for the establishment of normal pregnancy, dysregulation of this process may contribute to the pathogenesis of choriocarcinoma, a