Embryo Developmental Capacity After Egg Banking in an Ovum Donation Program

2014-08-27 03:19:18 | BioPortfolio


For an efficient "egg banking" system, an equally efficient cryopreservation strategy that ensures the viability of the oocytes is required. Very recently, improved and new methods are yielding satisfactory results. In particular, vitrification is providing excellent results for both survival and clinical outcomes. However, to evaluate the over all out come there are other parameters to be considered. In this sense, capacity development of embryos generated after oocyte vitrification is a major factor when assessing the viability of vitrified oocytes. Accordingly, the evaluation of the capacity of vitrified oocytes to reach the blastocyst stage will be highly valuable to fully assess the effectiveness of the "egg banking" and its contribution to ovum donation programs.

The aim of this study is to evaluate the developmental capacity of vitrified oocytes by their ability to reach the blastocyst stage. The study includes oocyte donation cycles conducted with vitrified versus fresh oocytes.

Study Design

Allocation: Randomized, Control: Active Control, Endpoint Classification: Bio-equivalence Study, Intervention Model: Parallel Assignment, Masking: Open Label




IVF, Oocyte Vitrification


IVI Valencia




Instituto Valenciano de Infertilidad, Spain

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:19:18-0400

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Medical and Biotech [MESH] Definitions

Inability to reproduce after a specified period of unprotected intercourse. Reproductive sterility is permanent infertility.

Minute cells produced during development of an OOCYTE as it undergoes MEIOSIS. A polar body contains one of the nuclei derived from the first or second meiotic CELL DIVISION. Polar bodies have practically no CYTOPLASM. They are eventually discarded by the oocyte. (from King & Stansfield, A Dictionary of Genetics, 4th ed)

The inability of the male to effect FERTILIZATION of an OVUM after a specified period of unprotected intercourse. Male sterility is permanent infertility.

The transformation of a liquid to a glassy solid i.e., without the formation of crystals during the cooling process.

An OOCYTE-containing structure in the cortex of the OVARY. The oocyte is enclosed by a layer of GRANULOSA CELLS providing a nourishing microenvironment (FOLLICULAR FLUID). The number and size of follicles vary depending on the age and reproductive state of the female. The growing follicles are divided into five stages: primary, secondary, tertiary, Graafian, and atretic. Follicular growth and steroidogenesis depend on the presence of GONADOTROPINS.

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