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Fatty acid composition of porcine cumulus oocyte complexes (COC) during maturation: effect of the lipid modulators trans-10, cis-12 conjugated linoleic acid (t10,c12 CLA) and forskolin

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Abstract

The effect of maturation and of two lipid modulators supplementation along in vitro maturation (IVM) on fatty acid (FA) and dimethylacetal (DMA) composition of porcine cumulus oocyte complexes (COC) were studied. Abattoir-derived immature COC were analyzed for FA and DMA or submitted to IVM as follows: control group; t10,c12 CLA group, t10,c12 CLA supplementation for 44 h; Forskolin group, forskolin supplementation during the initial 2 h; t10,c12 CLA + forskolin group, t10,c12 CLA for 44 h and forskolin for just 2h. Each experimental group had five replicates. FA analysis of oocytes, cumulus cells (CC), follicular fluid, and culture media were performed by gas–liquid chromatography. Oocytes and their CC had different FA composition. Oocytes were richer in saturated FA (SFA) preferentially maintaining their FA profile during maturation. Mature CC had the highest polyunsaturated FA (PUFA) content. Five individual and total SFA, and monounsaturated FA (MUFA), notably oleic acid (c9-18:1), percentages were lower (P ≤ 0.023) in mature than in immature CC. t10,c12 CLA was accumulated by COC from t10,c12 CLA and t10,c12 CLA + forskolin groups, mostly in CC where MUFA and an eicosatrienoic isomer decreased (P ≤ 0.043). Nevertheless, PUFA or FA and DMA total content were not affected. Arachidonic acid was reduced in t10,c12 CLA + forskolin CC and hexadecanal-DMA-16:0 in t10,c12 CLA CC. Forskolin alone increased (P ≤ 0.043) c9-18:1 in oocytes. In conclusion, maturation process clearly changed porcine COC FA and DMA profiles, mostly of CC, also more susceptible to modifications induced by t10,c12 CLA. This possibility of manipulating COC lipid composition during IVM could be used to improve oocyte quality/cryopreservation efficiency.

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Acknowledgment

The “Fundação para a Ciência e Tecnologia” is greatly acknowledged for funding a grant for E.G. Prates (SFRH/BD/42359/2007).

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Authors and Affiliations

  1. Unidade de Biotecnologia e Recursos Genéticos - Reprodução Animal, Instituto Nacional de Investigação Agrária e Veterinária, Vale de Santarém, Portugal

    E. G. Prates, C. C. Marques, M. C. Baptista, A. E. M. Horta & R. M. Pereira

  2. CIISA, Faculdade de Medicina Veterinária, Universidade Técnica de Lisboa, Lisboa, Portugal

    S. P. Alves & R. J. B. Bessa

  3. Instituto de Ciências Agrárias e Ambientais Mediterrânicas (ICAAM), Universidade de Évora, Évora, Portugal

    E. G. Prates

  4. Escola Universitária Vasco da Gama, Mosteiro de S. Jorge de Milréu, Coimbra, Portugal

    R. M. Pereira

  5. Unidade de Biotecnologia e Recursos Genéticos - Reprodução Animal, Instituto Nacional de Investigação Agrária e Veterinária, INIAV, Quinta da Fonte Boa, 2005-048, Vale de Santarém, Portugal

    R. M. Pereira

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  1. E. G. Prates
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  2. S. P. Alves
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  3. C. C. Marques
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  4. M. C. Baptista
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  5. A. E. M. Horta
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  6. R. J. B. Bessa
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  7. R. M. Pereira
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Correspondence to R. M. Pereira.

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Editor: T. Okamoto

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Prates, E.G., Alves, S.P., Marques, C.C. et al. Fatty acid composition of porcine cumulus oocyte complexes (COC) during maturation: effect of the lipid modulators trans-10, cis-12 conjugated linoleic acid (t10,c12 CLA) and forskolin. In Vitro Cell.Dev.Biol.-Animal 49, 335–345 (2013). https://doi.org/10.1007/s11626-013-9624-2

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