Embryonic Structures Commons^™

Prevalence, Persistence And Microscopic Aspects Of The Vomeronasal Organ In Normal Versus Embryos With Chromosomal Abnormalities, Carmen Constantina Martinescu, Marius Alexandru Moga, Codrut Ioan Ciurea, Lorena Dima, Liana Ples, Andreea Neculau

Journal of Mind and Medical Sciences

Background. The objective of this study was to describe the histological and immunohistochemical aspects of vomeronasal organ in two groups of (normal and pathological) embryos and fetuses, with chromosomal morphological abnormalities. Methods. The research was based on a retrospective, descriptive analysis, carried out over a period of 5 years. The study included 46 biopsy fragments taken from aborted embryos and fetuses aged between 9 and 23 weeks. We compared the microscopic structure of the vomeronasal organ using different histologic and immunohistochemical staining procedures. Results. Our results showed that in both groups of embryos and fetuses there are three major stages …

The Effect Of Sub 5% Oxygen Tension On In Vitro Human Embryo Development, Bradley James Link

EVMS School of Health Professions Theses & Dissertations

Objective: To determine the impact of < 5% O₂ tension on the in vitro development of human pre-implantation embryos. It was hypothesized that the optimal O₂ tension would differ from the commonly utilized 5%, as shown by beneficial effects after the implementation of a more physiological O₂ tension such as 2% for either the partial or full duration of in vitro culture.

Aim: To conduct a randomized controlled study to determine the effect of O₂ tension during in vitro human embryo culture on the production of reactive oxygen species (ROS), apoptosis, gene expression and embryo development.

Background: The …

The Effects Of Mapk Signaling On The Development Of Cerebellar Granule Cells, Kerry Morgan

Honors Scholar Theses

The granule cells are the most abundant neuronal type in the human brain. Rapid proliferation of granule cell progenitors results in dramatic expansion and folding of the cerebellar cortex during postnatal development. Mis-regulation of this proliferation process causes medulloblastoma, the most prevalent childhood brain tumor. In the developing cerebellum, granule cells are derived from Atoh1-expressing cells, which arise from the upper rhombic lip (the interface between the roof plate and neuroepithelium). In addition to granule cells, the Atoh1 lineage also gives rise to different types of neurons including cerebellar nuclei neurons. In the current study, I have investigated the …