TRANSUTERINE MIGRATION AND EMBRYO SURVIVAL IN SHEEP

Transuterine embryonal migration in sheep, anteroposterior orientation of pig and sheep fetuses and presentation of piglets at birth.

Little information is available on transuterine embryonal migration in monotocous animals and anteroposterior orientation of fetuses in the uterus. This study was designed to determine the frequency of transuterine embryonal migration in sheep and anteroposterior orientation of sheep fetuses, pig fetuses and piglets at birth. The migration frequency of preimplantation sheep embryos was 4.0%. Th...

Embryo Transfer in Sheep and Goats

Changes in Implantation and Survival Rates and Embryo Quality After Progesteron

Purpose: Determining the effect of progesterone on the embryo quality (total cell number and diameter of blastocyst), survival and implantation rates of mouse blastocyst with or without ovarian stimulation. Materials and Methods: Female 6-10 weeks old NMRI mice were divided into four groups as follows: (a) Non-stimulated pregnant mice as control (b) Non-stimulated pregnant mice with daily inje...

Survival, proliferation, and migration of human meningioma stem-like cells in a nanopeptide scaffold

Objective(s): In order to grow cells in a three-dimensional (3D) microenvironment, self-assembling peptides, such as PuraMatrix, have emerged with potential to mimic the extracellular matrix. The aim of the present study was to investigate the influence of the self-assembling peptide on the morphology, survival, proliferation rate, migration potential, and differentiation of human meningioma st...

Embryo transfer and related technologies in sheep reproduction.

This paper reviews the status of embryo transfer and the major technologies applied to preimplantation of embryos in sheep. Embryo production from superovulated ewes is hindered by an unpredictable response to hormonal treatment. Progress in this area should be expected by an appropriated control of follicular development with gonadotropin-releasing hormone (GnRH) agonist or antagonist prior to...