Effects of the donor factors and freezing protocols on the bovine embryonic lipid profile - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Biology of Reproduction Year : 2021

Effects of the donor factors and freezing protocols on the bovine embryonic lipid profile

Sarah Janati Idrissi
Daniel Le Bourhis
  • Function : Author
Antoine Lefevre
  • Function : Author
  • PersonId : 1033905
Laurene Le Berre
  • Function : Author
Olivier Desnoës
  • Function : Author
Thierry Joly
  • Function : Author
  • PersonId : 1079214
S. Buff
Laurent Schibler
Pascal Salvetti

Abstract

Embryo lipid profile is affected by in vitro culture conditions, that lead to an increase in lipids. Efforts have been made to optimize embryo lipid composition as it is associated with their quality. The objective of this study was to evaluate whether the diet supplementation of donor cows (n-3 or n-6 PUFA), or the slow freezing protocols (ethylene glycol sucrose EG-S vs. glycerol trehalose GLY-TRE), or the physiological stage of the donor (nulliparous heifers vs. primiparous lactating cows) may impact the bovine embryo lipid profile. Lipid extracts of 97 embryos were individually analysed by liquid chromatography-high resolution mass spectrometry, highlighting 246 lipids including 85% being overabundant in cow embryos compared to heifer embryos. Among 105 differential lipids, 72 were overabundant after EG-S protocol, including a single glycerophosphate PA(32:1) representing 27.3% of the significantly modulated lipids, suggesting that it is degraded when GLY-TRE is used. No lipids were different according to the n-3 or n-6 supplementation of the donor cows. In conclusion, the embryonic lipid profile was mainly affected by the physiological stage of the donors and the slow freezing protocols. The overabundance of lipids in lactating cow embryos and the resulting lower quality of these embryos is consistent with the lower pregnancy rate observed in cows compared to heifers. Unlike GLY-TRE protocol, EG-S freezing allowed to preserve glycerophospholipids potentially improving the slow freezing of in vitro-produced embryos. Further studies are required to modulate embryo quality and freezability by modulating the lipidome and integrating all stages of embryonic production.

Dates and versions

hal-03413303 , version 1 (03-11-2021)

Identifiers

Cite

Sarah Janati Idrissi, Daniel Le Bourhis, Antoine Lefevre, Patrick Emond, Laurene Le Berre, et al.. Effects of the donor factors and freezing protocols on the bovine embryonic lipid profile. Biology of Reproduction, 2021, 106 (3), pp.597-612. ⟨10.1093/biolre/ioab198⟩. ⟨hal-03413303⟩
101 View
0 Download

Altmetric

Share

Gmail Facebook X LinkedIn More