Trophoblast - Wikipedia
网页The trophoblast (from Greek trephein: to feed; and blastos: germinator) is the outer layer of cells of the blastocyst. Trophoblasts are present four days after fertilization in humans. [ 1 ] They provide nutrients to the embryo and develop into a large part of the placenta .
27.3A: Trophoblast Development - Medicine LibreTexts
网页2023年1月17日 · Trophoblast Function. Trophoblasts play an important role in embryo implantation and interaction with the endometrium of the maternal uterus following decidualization. The trophoblast is composed of two layers: an inner cytotrophoblast and an outer syncytiotrophoblast.
Early human trophoblast development: from morphology to …
网页2022年6月5日 · This review article focuses on what is known about very early processes in human reproduction and emphasizes on morphological and functional aspects of early trophoblast differentiation and subpopulations. Keywords: Blastocyst, Trophectoderm, Extravillous trophoblast, Villous trophoblast, Syncytialization. Go to:
Trophoblast - an overview | ScienceDirect Topics
网页Trophoblast (derived from the Greek word “tropho,” meaning to feed) is the epithelial cell in the placenta, a transient organ which plays a pivotal role in fetal growth and development during pregnancy [1]. Trophoblast are derived from trophectoderm (TE), the cells on the outer part of the blastocyst-stage embryo.
Trophoblast - Embryology
网页These cells have an important contribution to extra-embryonic tissues (fetal placenta and membranes) and processes of early development (adplantation, implantation and endocrine support of pregnancy). Human Blastocyst (day 5), trophoblast cells form the peripheral flattened epithelial layer of cells directly under the zona pellucida. [1] Mouse ...
Trophoblast | embryology | Britannica
网页In organisms that reproduce sexually, the union of an ovum with a sperm results in a zygote, or fertilized egg, which undergoes a series of divisions called cleavages as it passes down the fallopian tube. After several cleavages have taken place, the cells form a hollow ball called a blastula.
What Is Trophoblast? A Combination of Criteria Define Human …
网页2016年2月2日 · In vivo, trophoblast cells can be identified by their anatomical location and the expression of particular markers. In vitro, there is a lack of consensus about the best criteria to use to define trophoblast. A distinctive feature of trophoblast is its profile of human leukocyte antigen (HLA) class I expression.
Trophoblast Differentiation: Mechanisms and Implications for …
网页2023年8月12日 · Trophoblast differentiation is influenced by epigenetic modifications . Trophoblast cells are globally hypomethylated compared to the inner cell mass, and DNA methylation of the transcription factor Elf5 controls the …
Trophoblast - an overview | ScienceDirect Topics
网页The trophoblasts are the cells on the outside of the blastocyst that give rise to the placenta and involve attachment of the embryo to the wall of the uterus. In order to understand GTD, a brief review of normal trophoblasts is in order. There are three types of trophoblasts: cytotrophoblasts, syncytiotrophoblasts, and intermediate trophoblasts ...
Single-cell RNA-seq reveals the diversity of trophoblast ... - Nature
网页2018年7月24日 · New subtypes of cells of the known cytotrophoblast cells (CTBs), extravillous trophoblast cells (EVTs), Hofbauer cells, and mesenchymal stromal cells were identified and cell-type-specific gene...