In this study, we aimed at delineating the possible effect of estradiol (E2) levels on day β-hCG administration ovary by analysingthe Embryo Score (ES) early 2, 44hrs post insemination. Oocyte donor ovarian stimulation protocols were thus used in order to avoid any counteractions E2 with endometrium. All oocytes microinjected and all embryo transfers fresh.E2 E2/oocyte correlated positively ES ...

The sewage contains toxic chemical compounds that secondary treatment plants do not eliminate, and chlorine is usually added for disinfection before discharge. Chlorine reacts with forming other compounds. objective of this study was to evaluate the toxicity treated from a plant using Danio rerio embryos. Three types were tested, one disinfected gas (dCl2), another sodium hypochlorite (dClO), d...

background: multiple factors have been suggested for prediction of pregnancy in intracytoplasmic sperm injection (icsi) cycles such as the number of injected oocytes, fertilization rate, embryo morphology and quality of transferred embryos. predictive value of these factors is important in icsi outcome. objectives: to evaluate the role of embryo morphology for prediction of pregnancy in icsi cy...

Toads of the Family Bufonidae possess neurotoxins (bufadienolides) which are generally considered to be synthesized de novo. Thus, invasive toad species pose a threat native predators via toxic effects. However, influence diet on toxicity is poorly understood. We evaluated effect embryos Bufo japonicus formosus in Japan, using tadpoles (Rana pirica) as bioassay. Specifically, we compared spawne...

background: hla-g is a major histocompatibility complex (mhc), class ib molecule that is selectively expressed at the fetal–maternal interface. it is thought to play a role in protecting the fetus from the maternal immune response. interestingly, the preimplantation embryo development (ped) gene product qa-2 is also a mouse mhc class ib protein that affects cleavage and division of preimplantat...

background: studies have indicated that morphine may induce its delay effect on embryos development by corticosterone release. in the present study the effect of simultaneous oral morphine consumption and stress on spinal cord development in wistar rat embryos was investigated. methods: wistar rats (250-300 g) were used in this study. after pregnancy, the animals were divided into control, morp...

Background: Chromosome abnormalities are associated with poor morphology and development in human preimplantation embryos, all together lead to poor outcomes. This study aimed to explore altered expression of DNA damage pathways in “poor morphological and development embryos with sever aneuploidies”. Materials and Methods: Surplus day-4 embryos of PGD cases were pooled in two groups: Poor progn...

background: previous studies have shown that morphine consumption during pregnancy may cause delay or defect of embryo development or abnormal nervous system function in the human and animal models. in the present study, the highest density of morphine accumulation in the central nervous system of rat embryos was evaluated using c14‑morphine. methods: female wistar rats (w 170‑200 g) used and w...