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salinity changes. Euryhaline teleosts developed sophisticated mechanisms for transporting water and ions, and most of these traits were conserved in advanced vertebrates, including mammals ( Evans et al . 2005 , McCormick & Bradshaw 2006 , Takei et al

, Stoica et al. 2003 ). We previously demonstrated that RNA and protein synthesis inhibitors block E 2 -induced oviductal embryo transport acceleration in pregnant rats, but failed to do so in cyclic rats ( Ríos et al. 1997 , Orihuela et al

Introduction Endometrial epithelial cells play an important role in the regulation of fluid and electrolyte volume and composition within the uterine cavity, providing an optimal intrauterine environment for implantation and embryo development. The

latter indicates that the transport of thyroid hormones in and eventually out of the brain, via the choroid plexus, is indeed of significant importance. The staining of D2 protein in the choroid plexus was further examined in this study by

Introduction Cortisol of maternal origin is present in the oocytes and embryos of several fish species (reviewed by Leatherland et al . (2010) ), and maternal plasma cortisol levels during the period of oocyte vitellogenesis determine oocyte

Spagnuolo S Leoni S 2002 Short-term effects of thyroid hormones and 3,5-diiodothyronine on membrane transport systems in chick embryo hepatocytes . Endocrinology 143 1660 – 1668 . ( https://doi.org/10.1210/endo.143.5.8767 ) 10.1210/endo.143

induced knockdown of glut12 in zebrafish. Our results indicate that glucose uptake mediated by glut12 is essential for cardiac development because glut12 -deficient embryos exhibited normal development but showed heart failure. Moreover, knockdown of

loss of PAPP-A resulted in complete loss of IGFBP-4 proteolytic activity, with no alterations in embryonic IgfII or Igfbp4 gene expression. The impact of the mutation occurred early in embryo development, prior to organogenesis, affecting skeletal

Introduction Embryo implantation is one of the earliest and critical events of the mammalian reproduction. It occurs in the maternal uterus and allows the mother to nourish and protect the embryo during its subsequent development, determining

environmental exposures from the quality of maternal and paternal nutrition to assisted reproductive technology (ART) ( Fig. 1 ). The stages of gamete maturation, fertilisation and early embryo development are collectively known as the periconceptional period