Listar INVESTIGACIÓN por autor "Felmer, Ricardo"
Mostrando ítems 1-6 de 6
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Cryopreservation induces mitochondrial permeability transition in a bovine sperm model
Treulen, Favian [Univ Mayor, Sch Med Technol, Fac Sci, Temuco, Chile]; Aguila, Luis [Univ Mayor, Sch Med Technol, Fac Sci, Temuco, Chile]; Aguila, Luis; Uribe, Pamela; Felmer, Ricardo (ACADEMIC PRESS INC ELSEVIER SCIENCE, 2018)When the mitochondria of somatic cells are exposed to pathological calcium overload, these trigger mitochondrial permeability transition (MPT) leading to mitochondrial dysfunction and cell death. Cryopreservation procedures ... -
Cryopreservation of stallion semen: Effect of adding antioxidants to the freezing medium on sperm physiology
Treulen, Favian [Univ Mayor, Fac Ciencias, Escuela Tecnol Med, Temuco, Chile]; JoséContreras, Maria; Elena Arias, Maria; Silva, Mauricio; Fuentes, Fernanda; Cabrera, Paulina; Felmer, Ricardo (WILEY, 2020)Cryopreservation of stallion semen has not reached the level of efficiency and positive results described in other species. This is mainly due to the greater sensitivity of stallion sperm to the freezing process, showing ... -
Effect of human tubal fluid medium and hyperactivation inducers on stallion sperm capacitation and hyperactivation
Treulen, Favian [Univ Mayor, Fac Sci, Sch Med Technol, Temuco, Chile]; Arroyo-Salvo, Camila; Sanhueza, Francisco; Fuentes, Fernanda; Arias, María Elena; Cabrera, Paulina; Silva, Mauricio; Felmer, Ricardo (WILEY, 2019)Contents Conventional in vitro fertilization has not yet been implemented in the equine species. One of the main reasons has been the inability to develop a culture medium and incubation conditions supporting high levels ... -
Effect of MnTBAP on in vitro capacitation of frozen-thawed stallion sperm
Treulen, Favian [Univ Mayor, Fac Sci, Sch Med Technol, Chile]; Aguila, Luis; Elena Arias, María; Jofre, Ignacio; Felmer, Ricardo (Elsevier, 2020-10)In vitro manipulation of spermatozoa leads to deleterious changes of structure and function that occur mainly due to oxidative stress, therefore, prevention or treatment is a strategy to improve the functions of processed ... -
Impact of post-thaw supplementation of semen extender with antioxidants on the quality and function variables of stallion spermatozoa
Treulen, Favian [Univ Mayor, Fac Sci, Sch Med Technol, Temuco, Chile]; Aguila, Luis; Elena Arias, Maria; Jofre, Ignacio; Felmer, Ricardo (ELSEVIER SCIENCE BV, 2019)During cryopreservation procedures, the spermatozoa are exposed to physical and chemical stressors that generate an increase in the intracellular concentration of reactive oxygen species (ROS). If ROS concentrations are ... -
Oocyte Selection for In Vitro Embryo Production in Bovine Species: Noninvasive Approaches for New Challenges of Oocyte Competence
Aguila, Luis; Treulen, Favian [Univ Mayor, Fac Sci, Sch Med Technol, Chile]; Therrien, Jacinthe; Felmer, Ricardo; Valdivia, Martha; Smith, Lawrence C. (MDPI Multidisciplinary Digital Publishing Institute, 2020-12)The efficiency of producing embryos using in vitro technologies in cattle species remains lower when compared to mice, indicating that the proportion of female gametes that fail to develop after in vitro manipulation is ...