Title
Cryosurvival of rabbit embryos obtained after superovulation with corifollitropin alfa with or without LH
Date Issued
01 May 2018
Access level
open access
Resource Type
journal article
Author(s)
Universitat Politècnica de València, Valencia
Publisher(s)
Elsevier B.V.
Abstract
The efficiency of an embryo bank depends on provision of optimal conditions for recovery, cryopreservation and transfer to a breed or strain. In this sense, increasing the number of embryos available using superovulation should improve the cryobank efficiency. However, vagueness of response to conventional protocols to control or increase ovarian response and the quality of oocytes and embryos and their cryotolerance remain a challenge. The aim of our study was to evaluate the effect of corifollitropin alpha (CTP) and a recombinant human FSH (rhFSH), alone or supplemented with rhLH, on embryo cryosurvival by in vitro development and OCT4 and NANOG mRNA abundance at blastocyst stage and offspring rate. In vitro development of vitrified embryos was not significantly affected by superstimulation with or without rhLH supplementation, resulting in similar development rates to those of the control groups (fresh and vitrified embryos from non-superstimulated donor does). Blastocysts developed from vitrified embryos showed higher levels of OCT4 transcript abundance than fresh control, while NANOG transcript abundance was only higher in the blastocysts developed from vitrified embryos after superstimulation treatment in comparison with control groups. The implantation and offspring rates at birth were negatively affected by supplementation with rhLH. Both rhFSH or CTP vitrified embryo groups showed an implantation rate similar to those of the control groups, but an offspring rate lower than control. In conclusion, embryos produced using corifollitropin alpha did not compromise the cryosurvival of vitrified embryos in the rabbit. In addition, this study points out the negative effect of rhLH supplementation in terms of offspring rate on embryo vitrification.
Start page
321
End page
327
Volume
192
Language
English
OCDE Knowledge area
Zoología, Ornitología, Entomología, ciencias biológicas del comportamiento
Subjects
Scopus EID
2-s2.0-85045204849
PubMed ID
Source
Animal Reproduction Science
ISSN of the container
03784320
Sponsor(s)
This research was supported by the projects: Spanish Research project AGL2014-53405-C2-1-P Comisión Interministerial de Ciencia y Tecnología (CICYT) and Generalitat Valenciana research programme (Prometeo II 2014/036) . English text version revised by N. Macowan English Language Service.
Sources of information:
Directorio de Producción Científica
Scopus