Results 31 to 40 of about 3,723 (184)

Epithelial-mesenchymal transition and bi- and multi-nucleated trophoblast cell formation in ovine conceptuses during the peri-implantation period

The Journal of Reproduction and Development, 2022
Epithelial-mesenchymal transition (EMT), which is common in cancer metastasis, is also observed during developmental processes such as embryo implantation into the maternal endometrium in humans and rodents.
Ayami YAMADA, Kaito OHTSUKI, Natsumi SHIGA, Jonathan A. GREEN, Yuta MATSUNO, Kazuhiko IMAKAWA   +5 more
doaj   +1 more source

Lineage Differentiation Markers as a Proxy for Embryo Viability in Farm Ungulates

Frontiers in Veterinary Science, 2021
Embryonic losses constitute a major burden for reproductive efficiency of farm animals. Pregnancy losses in ungulate species, which include cattle, pigs, sheep and goats, majorly occur during the second week of gestation, when the embryo experiences a ...
Alba Pérez-Gómez, Leopoldo González-Brusi, Pablo Bermejo-Álvarez, Priscila Ramos-Ibeas   +3 more
doaj   +1 more source

Embryonic Folding

MedEdPORTAL, 2007
Introduction Embryology is a challenging subject to learn because it involves three-dimensional structures within the embryo that are constantly changing as development proceeds. This animated module depicts embryonic folding, in which the flat embryonic
Donald Lowrie, Adam Schirmer, Karen Marsh   +2 more
doaj   +1 more source

Isolation of Oct4-expressing extraembryonic endoderm precursor cell lines. [PDF]

PLoS ONE, 2009
BACKGROUND:The extraembryonic endoderm (ExEn) defines the yolk sac, a set of membranes that provide essential support for mammalian embryos. Recent findings suggest that the committed ExEn precursor is present already in the embryonic Inner Cell Mass ...
Bisrat G Debeb, Vasiliy Galat, Jessica Epple-Farmer, Steve Iannaccone, Wendy A Woodward, Michael Bader, Philip Iannaccone, Bert Binas   +7 more
doaj   +1 more source

Male Embryos Produced in vitro Deviate From Their in vivo Counterparts in Placental Gene Expression on Day 32 of Pregnancy

Frontiers in Animal Science, 2022
This study compared the gene expression of extraembryonic membranes (EEM) from in vitro produced (IVP) and in vivo (AI) derived pregnancies. A piece of conceptus (day 18) or chorioallantois (day 32) was used for DNA and RNA isolation and sex ...
Jéssica N. Drum, Jéssica N. Drum, Guilherme Madureira, Camila O. Rosa, Marcelo M. Seneda, Milo C. Wiltbank, Roberto Sartori, M. Sofia Ortega   +7 more
doaj   +1 more source

Epiblast-specific Snai1 deletion results in embryonic lethality due to multiple vascular defects

BMC Research Notes, 2009
Background Members of the Snail gene family, which encode zinc finger proteins that function as transcriptional repressors, play essential roles during embryonic development in vertebrates.
Gridley Thomas, Starling Christa, Lomelí Hilda   +2 more
doaj   +1 more source

Microarray Analysis of Gene Expression in the Uterine Endometrium during the Implantation Period in Pigs [PDF]

Asian-Australasian Journal of Animal Sciences, 2012
During embryo implantation in pigs, the uterine endometrium undergoes dramatic morphological and functional changes accompanied with dynamic gene expression.
Mingoo Kim, Heewon Seo, Yohan Choi, Jangsoo Shim, Heebal Kim, Chang-Kyu Lee, Hakhyun Ka   +6 more
doaj   +1 more source

Yolk syncytial layer formation is a failure of cytokinesis mediated by Rock1 function in the early zebrafish embryo

Biology Open, 2012
Summary The yolk syncytial layer (YSL) performs multiple critical roles during zebrafish development. However, little is known about the cellular and molecular mechanisms that underlie the formation of this important extraembryonic structure.
Lee-Thean Chu, Steven H. Fong, Igor Kondrychyn, Siau Lin Loh, Zhanrui Ye, Vladimir Korzh   +5 more
doaj   +1 more source

Valores séricos de imunoglobulinas e dos componentes do complemento em gestantes com ruptura prematura de membranas Immunoglobulin serum values and complement components in pregnant women with premature rupture of the membranes

Revista Brasileira de Ginecologia e Obstetrícia, 2007
OBJETIVO: a ruptura prematura de membranas (RPM) tem sido motivo para muitas indagações, dentre as quais os mecanismos imunes envolvidos. Diante da escassez de estudos relacionados ao tema, este trabalho teve como objetivo avaliar os valores séricos de ...
Valquíria Roveran, José Júlio de Azevedo Tedesco, Wilma de Carvalho Neves Forte, Lúcia Mitsuko Yamano, Lílian Paiva Rodrigues, Mônica Lopez Vazquez, Tsutomu Aoki   +6 more
doaj   +1 more source

Development of the Human Placenta and Fetal Heart: Synergic or Independent?

Frontiers in Physiology, 2018
The placenta is the largest fetal organ, and toward the end of pregnancy the umbilical circulation receives at least 40% of the biventricular cardiac output.
Graham J. Burton, Eric Jauniaux
doaj   +1 more source