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Article Dans Une Revue Theriogenology Année : 2022

Effect of DHA on the quality of In vitro produced bovine embryos

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Victoria Slezec-Frick
  • Fonction : Auteur
Daniel Le Bourhis
  • Fonction : Auteur
Laurene Le Berre
  • Fonction : Auteur
Thierry Joly
  • Fonction : Auteur
  • PersonId : 1079214
Laurent Schibler
Pascal Salvetti

Résumé

Docosahexaenoic acid (DHA) is an n-3 polyunsaturated fatty acid (PUFA) that improves fertility by increasing membrane fluidity. Moreover, embryos produced by donor females supplied with n-3 PUFA did not show any difference in terms of the lipid profile after 7 days of culture. The present study aimed to investigate the effects of DHA (20 and 100 mM) coupled with carnosine (5 mg/mL), an antioxidant, during oocyte maturation and embryo development on the developmental and cryosurvival rates and the number of pluripotent cells. Free fatty acid receptor-4 (FFAR4), which is able to bind DHA, was visualised by immunostaining. The addition of DHA in the in vitro development (IVD) medium decreased the percentage of pluripotent SOX2 positive cells compared with the control (8.4% vs. 10.9%) without affecting the number of cells (196.7 vs. 191.6 cells) or the developmental (20.9% vs. 23.9% blastocysts rate on D7) and cryosurvival rates (86.3% vs 86.2%). Such a decrease in pluripotent cells, relevant to the differentiation of the first lineage within the inner cell mass, represents an improvement in the embryo quality. On the contrary, embryos without any pluripotent SOX2-positive cells would not be able to achieve gestation. Future studies should follow up these results by carrying out embryo transfers to assess the beneficial effects of DHA supplementation.
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Dates et versions

hal-03676421 , version 1 (31-05-2022)

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Citer

Sarah Janati Idrissi, Victoria Slezec-Frick, Daniel Le Bourhis, Laurene Le Berre, Thierry Joly, et al.. Effect of DHA on the quality of In vitro produced bovine embryos. Theriogenology, 2022, 187, pp.102-111. ⟨10.1016/j.theriogenology.2022.04.026⟩. ⟨hal-03676421⟩
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