Chorionic Villi
Mostrando 1-12 de 44 artigos, teses e dissertações.
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1. Imunodetecção de Toxoplasma gondii em tecido placentário de cabras naturalmente infectadas
RESUMO A imuno-histoquímica (IHQ) é considerada uma ferramenta rápida e precisa para a identificação de protozoários, como Toxoplasma gondii, em tecidos fetais e placentários. Neste estudo foi avaliada a imunodetecção de Toxoplasma gondii em tecido placentário de cabras naturalmente infectadas. Foram coletadas e analisadas 80 amostras de placentas
Arq. Bras. Med. Vet. Zootec.. Publicado em: 2019-02
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2. Placental hydroxymethylation vsmethylation at the imprinting control region 2 on chromosome 11p15.5
In addition to methylated cytosines (5-mCs), hydroxymethylcytosines (5-hmCs) are present in CpG dinucleotide-enriched regions and some transcription regulator binding sites. Unlike methylation, hydroxymethylation does not result in silencing of gene expression, and the most commonly used methods to study methylation, such as techniques based on restriction e
Braz J Med Biol Res. Publicado em: 22/10/2013
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3. Análise dos resultados dos procedimentos invasivos para estudo do cariótipo fetal / Fetal maternal results following invasive procedures for fetal kariotype
Objective: The purpose of this study is to characterize the indications of pregnant women who seek the Fetal Medicine Service of Hospital das Clínicas of São Paulo University to perform invasive diagnostic procedures and evaluate the results of fetal karyotypes and their pregnancies from February 2005 to December 2009. Methods: Retrospective observational
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/11/2012
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4. Efeitos do ciclamato de sódio e do aspartame na placenta de uma ratas: estudo morfométrico
To evaluate the effects on the placenta of the administration to rats during embryogenesis, of sodium cyclamate or aspartame. Method: Administration of respectively, 14 mg/kg of aspartame via an orogastric sound to a group of rats during their tenth to fourteenth day of pregnancy, of 60 mg/Kg of sodium cyclamate intraperitonially to another group, and of equ
Publicado em: 2008
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5. Abortamento humano : detecção molecular de AAV e de HPV em decídua e vilosidade coriônica
Pregnancy failure is a common event often of unknown cause. Some viruses are suggested as cause of abortion and, among them, adeno-associated virus (AAV), that has never been implicated as a cause of disease. AAV (AAV1-11 types), belonging to Parvoviridae family, requires helper virus function for replication, as from human papillomavirus (HPV), that belongs
Publicado em: 2007
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6. Stereological aspects of chorionic villi of the placental of cloned bovines / Aspectos estereológicos dos vilos coriônicos da placenta de bovinos clonados
A clonagem de animais é uma técnica em desenvolvimento e ainda requer refinamento, uma vez que as perdas embrionárias são significativas. Mesmo com animais chegando à termo, algumas deficiências verificadas ao nascimento provocam a morte destes antes do primeiro mês de vida. As alterações placentárias durante a embriogênese estão relacionadas, à
Publicado em: 2006
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7. Chorionic villi sampling: cytogenetic and clinical findings in 500 pregnancies.
The cytogenetic findings were analysed in a series of 500 pregnancies in which chorionic villi sampling was performed. In all cases a direct method was used, karyotyping being successful in 481 cases (96.2%). The main indication for sampling was maternal age over 36 (412 cases; 82.4%). Abnormal laboratory findings resulted in 24 terminations of pregnancy (4.
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8. Anaphase lag as the most likely mechanism for monosomy X in direct cytotrophoblasts but not in mesenchymal core cells from the same villi.
A 36 year old white female was referred for chorionic villus sampling for advanced maternal age. Direct (cytotrophoblast) preparations of chorionic villi were 45,X, but cultured mesenchymal core cells from the same villi were 46,XX. Study of embryonic and extraembryonic tissues showed the aneuploidy to be limited to cytotrophoblasts from specific placental s
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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. Cyclophosphamide increases the frequency of sister chromatid exchange in direct preparations of human chorionic villi in the absence of supplementary enzymatic activation systems.
A study was performed to evaluate the effect on the frequency of sister chromatid exchange in first trimester chorionic villi of two chemical compounds, mitomycin C and cyclophosphamide. Mitomycin C is generally known to induce an increase in sister chromatid exchange both in vivo and in vitro standard conditions. Cyclophosphamide is a compound requiring add
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11. Early prenatal investigation of a pregnancy at risk of adenosine deaminase deficiency using chorionic villi.
A pregnancy at risk for adenosine deaminase deficiency and severe combined immunodeficiency disease was investigated using samples of chorionic villi obtained during the eighth week of pregnancy. Adenosine deaminase levels suggested that the fetus was a probable carrier and that a diagnosis of severe combined immunodeficiency disease could be excluded. Enzym
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12. Complete reactivation of X chromosomes from human chorionic villi with a switch to early DNA replication.
Mammalian sex-dosage compensation is mediated by maintaining activity of only one X chromosome. The asynchronous DNA synthesis characterizing the silent human X chromosome is thought to be reversible only during ontogeny of oocytes. We have previously shown that the glucose-6-phosphate dehydrogenase (G6PD) locus (G6PD) on the allocyclic X chromosome in chori