Now showing items 1-4 of 4

    • Cyclic AMP affects oocyte maturation and embryo development in prepubertal and adult cattle 

      Bernal Ulloa, Sandra Milena; Heinzmann, Júlia; Herrmann, Doris; Hadeler, Klaus Gerd; Aldag, Patrick; Winkler, Sylke; Pache, Dorit; Baulain, Ulrich (2016)
      High cAMP levels during in vitro maturation (IVM) have been related to improved blastocyst yields. Here, we employed the cAMP/cGMP modulators, forskolin, IBMX, and cilostamide, during IVM to unravel the role of high cAMP ...
    • Effects of different oocyte retrieval and in vitro maturation systems on bovine embryo development and quality 

      Bernal Ulloa, Sandra Milena; Heinzmann, Julia; Herrmann, Doris; Timmermann, Bernd; Baulain, Ulrich; Großfeld, Rudolf; Diederich, Mike (2013-04)
      Cyclic adenosine monophosphate (cAMP) modulators have been used to avoid spontaneous oocyte maturation and concomitantly improve oocyte developmental competence. The current work evaluated the effects of the addition of ...
    • Generalidades de la producción de embriones bovinos in vitro 

      Gonella Diaza, Ángela María; Atuesta Bustos, Jorge Eduardo; Bernal Ulloa, Sandra Milena; Chacón Jaramillo, Liliana (2013)
      In vitro embryo production (IEP) is a reproducti- ve biotechnology that impacts livestock systems favoring breeding and which have also been uti- lized as research models for embryo development in other species. For the ...
    • Oocyte pre-IVM with caffeine improves bovine embryo survival after vitrification 

      Bernal Ulloa, Sandra Milena; Lucas Hahn, Andrea; Herrmann, Doris; Hadeler, Klaus; Aldag, Patrick (2016)
      Cryopreservation of in vitro produced bovine embryos is associated with significantly reduced survival rates, mainly due to insufficient quality of the embryos. Caffeine supplementation during IVM has been used to delay ...