نتایج جستجو برای: chorionic villous sampling

تعداد نتایج: 221506  

Journal: :Molecular human reproduction 2007
Shira Natanson-Yaron Eyal Y Anteby Caryn Greenfield Debra Goldman-Wohl Yaron Hamani Drorit Hochner-Celnikier Simcha Yagel

Branching morphogenesis (BM) of the chorionic villous tree is a crucial component of early placental formation. Fibroblast growth factors (FGFs), their receptor tyrosine kinase (RTK) and negative regulators like Sprouty (Spry) proteins are pivotal factors in the development of diverse branching organ systems. The aim of this study was to examine the effect of FGF10 and Sprouty 2 on BM of the ch...

2015
Kyu Rae Kim Chang Ohk Sung Tae Jeong Kwon JungBok Lee Stanley J. Robboy

The pathogenetic mechanism underlying the hydropic change in complete hydatidiform moles (CHMs) is poorly understood. A growing body of data suggests that pericytes play a role in vascular maturation. Since maturation of villous stromal vessels in CHMs is markedly impaired at early stages, we postulated that a defect in pericytes around stromal vessels in chorionic villi might cause vascular im...

Journal: :The Journal of Experimental Medicine 1992
J A Lata R S Tuan K J Shepley M M Mulligan L G Jackson J B Smith

Maternal immune recognition of pregnancy occurs despite the nonexpression of classical major histocompatibility complex (MHC) antigenic determinants by chorionic villous trophoblast, which comprise the major surface area where maternal blood contacts fetal-derived cells. cDNA-mRNA in situ hybridization was used to probe expression of transcripts corresponding to nonpolymorphic MHC determinants ...

Journal: :Journal of the Medical Association of Thailand = Chotmaihet thangphaet 2006
Wirawit Piyamongkol

Single gene mutations may lead to an inherited disorder with Mendelian inheritance patterns, of which over 8,000 disorders have been catalogued. The strategy of population screening, offering genetic counseling, prenatal diagnosis and termination of affected pregnancy has been successfully applied worldwide to reduce the number of new patients. Common fetal sampling techniques in utero include ...

Journal: :The Journal of Experimental Medicine 1965
H. A. Thiede J. W. Choate H. H. Gardner H. Santay

The chorionic villi of term placentas were examined for A and B blood group substance using the IF technique with heterologous and homologous antisera. No specific fluorescence was found in either the villous trophoblast or vessels of the chorionic villi. The implications of these findings in relation to the question of trophoblastic antigenicity are discussed.

Journal: :Hypertension 2008
Lauren Anton David C Merrill Liomar A A Neves Kathryn Stovall Patricia E Gallagher Debra I Diz Cheryl Moorefield Courtney Gruver Carlos M Ferrario K Bridget Brosnihan

The chorionic villi in the placenta are responsible for the regulation of fetal oxygen and nutrient transport. Although the peripheral renin-angiotensin system is activated during normal pregnancy, the regulation of the local chorionic villi renin-angiotensin system remains unknown. Therefore, placental chorionic villous tissue was collected from nulliparous third-trimester normotensive or pree...

2018
Giovanni Monni Cristina Peddes Ambra Iuculano Rosa Maria Ibba

The incidence of β-thalassemia in Sardinia is high and β-39 is the most common mutation. The prevention campaign started in 1977 and was performed in a single center (Microcitemico Hospital, Cagliari, Sardinia, Italy). It was based on educational programs, population screening by hematological and molecular identification of the carriers. Prenatal and pre-implantation diagnosis was offered to c...

Journal: :Italian journal of anatomy and embryology = Archivio italiano di anatomia ed embriologia 2007
Gen Niimi Kiyoshi Hasegawa Nobuteru Usuda Masanori Shinzato Jaime Pereda Yoichi Nagamura

Light and electron microscopic examination of first-trimester and term human placental tissues were performed to identify erythrocytes containing hemoglobin in the villous trophoblast cell layer. Erythrocytes were not identified in chorionic villous epithelium at week 7 of gestation. These cells first appeared in the villous cytotrophoblast at week 8, and continued to be present in the villous ...

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