The human sperm motility assay was used as a measure of quality control in the IVF laboratory. The effects of albumin supplementation and incubation time on the sensitivity of the human sperm motility assay were investigated. The assay was also compared with mouse embryo development. The human sperm motility assay and mouse embryo development assays were performed on 25 items commonly used in I...

OBJECTIVE The main objective of this study was to assess the prevalence of overweight and obesity among patients undergoing assisted reproductive technology (ART) in Latin America and its consequences on treatment outcomes. METHODS We used the Latin American Registry of ART to obtain women's age and body mass index (BMI), cancellation rate, number of oocytes retrieved and embryos transferred,...

The spawning sites, embryonic development, and initial larval stages were described for the Chilean kelpfish, Myxodes viridis. Six different egg clutches found attached by an elastic filament to fronds of subtidal kelp, Lessonia trabeculata, at shallow depths (0-7 m). All cared one large (>15 cm TL) male, color varied depending on developmental stage. Embryonic development until hatching was...

Embryonic X-ray amorphous semi-formed MFI-type zeolite units mixed with the Cu–Zn–Al catalyst have been used for direct synthesis of dimethyl ether (DME) from syngas. The hybrid embryonic (EZ) particle size 5 nm has demonstrated superior performance in terms activity, selectivity, and stability compared to crystalline ZSM-5 counterpart aluminosilicate material. FTIR pyridine adsorption uncovere...

background & objectives : different energy substrates and nutrients can greatly influence oocyte nuclear and cytoplasmic maturation. effect of glucose on in-vitro oocyte maturation and subsequent early embryonic development is controversial. the objective of the present study was to verify the effect of various concentrations of glucose on cumulus-oocyte complexes maturation, fertilization and ...

The microsomal flavoprotein NADPH-cytochrome P450 oxidoreductase (CYPOR) is believed to function as the primary, if not sole, electron donor for the microsomal cytochrome P450 mixed-function oxidase system. Development of the mammalian embryo is dependent upon temporally and spatially regulated expression of signaling factors, many of which are synthesized and/or degraded via the cytochromes P4...

In humans, it is widely demonstrated that maternal obesity negatively affects fertility, pregnancy outcomes and offspring’s health. Less is known about the effects of paternal obesity on fertility and offspring’s development. Recent observations in animal models show that dietinduced obese males have impaired sperm quality, delayed preimplantation growth of the fertilized oocyte, and reduced im...

Previous analysis of the Cerberus like 2 knockout (Cerl2-/-) mouse revealed a significant mortality during the first day after birth, mostly due to cardiac defects apparently associated with randomization of the left-right axis. We have however, identified Cerl2-associated cardiac defects, particularly a large increase in the left ventricular myocardial wall in neonates that cannot be explained...