[Influence of intrafollicular factors at ovarian level during oocyte/embryo development]. / Influencia de los factores intrafoliculares a nivel ovárico durante el desarrollo óvulo/embrionario.

There is series of factors associated to fertilization and embryo development events. Each factor has a role in the inter-relationship between various molecular events related to oocyte/embryo quality. Dynamic features associated to endocrine-paracrine environment are determinant to the role of each factor in ovaric follicullar development. Growth factors, vascular-endothelial growth factor, nitric oxide, leptin and others correlate in ovular maturity process. That is why growth factors, vascular-endothelial growth factor, nitric oxide, leptin and others can be expressed as embryo viability and implantation biomarkers.