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In vitro fertilization (IVF) in mammals: epigenetic and developmental alterations: scientific and bioethical implications for IVF in humans
Ventura-Juncá, Patricio; Irarrázaval, Isabel; Rolle, Augusto J; Gutiérrez, Juan I; Moreno, Ricardo D; Santos, Manuel J.
Afiliación
  • Ventura-Juncá, Patricio; Pontificia Universidad Católica de Chile. Faculty of Medicine. Department of Pediatrics. Santiago. CL
  • Irarrázaval, Isabel; Pontificia Universidad Católica de Chile. Faculty of Medicine. Department of Pediatrics. Santiago. CL
  • Rolle, Augusto J; Pontificia Universidad Católica de Chile. Faculty of Medicine. Department of Pediatrics. Santiago. CL
  • Gutiérrez, Juan I; Pontificia Universidad Católica de Chile. Faculty of Medicine. Department of Pediatrics. Santiago. CL
  • Moreno, Ricardo D; Pontificia Universidad Católica de Chile. Faculty of Biological Sciences. Department of Physiology. Santiago. CL
  • Santos, Manuel J; Pontificia Universidad Católica de Chile. Faculty of Medicine. Department of Pediatrics. Santiago. CL
Biol. Res ; 48: 1-13, 2015. ilus
Article en En | LILACS | ID: biblio-950832
Biblioteca responsable: CL1.1
ABSTRACT
The advent of in vitro fertilization (IVF) in animals and humans implies an extraordinary change in the environment where the beginning of a new organism takes place. In mammals fertilization occurs in the maternal oviduct, where there are unique conditions for guaranteeing the encounter of the gametes and the first stages of development of the embryo and thus its future. During this period a major epigenetic reprogramming takes place that is crucial for the normal fate of the embryo. This epigenetic reprogramming is very vulnerable to changes in environmental conditions such as the ones implied in IVF, including in vitro culture, nutrition, light, temperature, oxygen tension, embryo-maternal signaling, and the general absence of protection against foreign elements that could affect the stability of this process. The objective of this review is to update the impact of the various conditions inherent in the use of IVF on the epigenetic profile and outcomes of mammalian embryos, including superovulation, IVF technique, embryo culture and manipulation and absence of embryo-maternal signaling. It also covers the possible transgenerational inheritance of the epigenetic alterations associated with assisted reproductive technologies (ART), including its phenotypic consequences as is in the case of the large offspring syndrome (LOS). Finally, the important scientific and bioethical implications of the results found in animals are discussed in terms of the ART in humans.
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Texto completo: 1 Colección: 01-internacional Base de datos: LILACS Asunto principal: Fertilización In Vitro / Biología Evolutiva / Epigenómica / Mamíferos Tipo de estudio: Diagnostic_studies / Etiology_studies / Risk_factors_studies Aspecto: Ethics Límite: Animals / Humans Idioma: En Revista: Biol. Res Asunto de la revista: BIOLOGIA Año: 2015 Tipo del documento: Article País de afiliación: Chile Pais de publicación: Chile
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: LILACS Asunto principal: Fertilización In Vitro / Biología Evolutiva / Epigenómica / Mamíferos Tipo de estudio: Diagnostic_studies / Etiology_studies / Risk_factors_studies Aspecto: Ethics Límite: Animals / Humans Idioma: En Revista: Biol. Res Asunto de la revista: BIOLOGIA Año: 2015 Tipo del documento: Article País de afiliación: Chile Pais de publicación: Chile