Cryopreservation and sexing of embryos are integrated into commercial embryo transfer technologies. To improve the effectiveness of vitrification of in vitro produced buffalo embryos, two experiments were conducted. The first evaluated the effect of exposure time (2 and 3 min) and developmental stage (morula and blastocysts) on the viability and development of vitrified buffalo embryos. Morphol...

background: embryo morphology has been proposed as an alternative marker of chromosomal status. the objective of this retrospective cohort study was to investigate the association between the chromosomal status on day 3 of embryo development and blastocyst morphology.embryo morphology has been proposed as an alternative marker of chromosomal status. the objective of this retrospective cohort st...

background: melatonin, a reactive oxygen species (ros) scavenger and an antioxidant, has been shown that can inhibit apoptosis. administration of melatonin may improve embryo development in assisted reproductive technology (art). objective: the aim of this study was to evaluate the role of melatonin in inhibition of spontaneous and induced apoptosis by tumor necrosis factor alph (tnf-α) and act...

Background: In somatic cell nuclear transfer (SCNT) method of cloning, transferred nucleus should be dedifferentiated from differentiated state to embryonic state. Molecular analysis showed that the reprogramming in the transferred nucleus was incomplete and cloned embryos have epigenetic abnormalities such as high DNA methylations levels. Since methylation in pre-implantation embryos has a cri...

Bilateral pairs of blastomeres derived from the founder cell AB, the anterior blastomere of the 2-cell stage, in the Caenorhabditis elegans embryo are initially equivalent in their developmental potential. Recently, we showed that an induction at the 12-cell stage by a blastomere called MS is necessary to establish the differences between left and right pairs of blastomeres in the anterior part...

Luman/CREB3 is a transcription factor that is a member of the cAMP-response-element-binding protein family of basic region-leucine zipper transcription factors. This protein interacts with host cell factor 1, which also associates with the herpes simplex virus protein VP16 to induce the transcription of herpes simplex virus. Currently, the physiological function of Luman/CREB3 in reproductive p...

We evaluated wet and dry ventricular and embryo weights, hemodynamic parameters of ventricular function, and myocardial myocyte organelle composition in the developing chick embryo. Phasic and dP/dt ventricular pressure were measured with a servo null pressure system, and phasic, mean, and dV/dt dorsal aortic velocities were measured with a 20-MHz pulsed-Doppler meter. Ventricular and embryo we...

The role of the mitochondrial genome in early development and differentiation was studied in mouse embryos cultured in vitro from the two to four cell stage to the blastocyst (about 100 cells). During this period the mitochondria undergo morphological differentiation: progressive enlargement followed by an increase in matrix density, in number of cristae, and in number of mitochondrial ribosome...