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Article

Autor: Ulloa Rodriguez, Patricio Contreras, Pablo Dumorne, Kelly Figueroa Villalobos, Elías Risopatron, Jennie Valdebenito Isler, Iván Farias, Jorge G.

In this study, the morphology and ultrastructure of Eleginops maclovinus spermatozoa were characterized through scanning and electron microscopy. Findings revealed that E. maclovinus spermatozoa can be differentiated into three major parts: a spherical head without acrosome (typical for externall...

Enlace original: http://repositoriodigital.uct.cl/handle/10925/3411

Repositorio Digital Universidad Católica de Temuco
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Ulloa Rodriguez, Patricio ,  Contreras, Pablo ,  Dumorne, Kelly ,  Figueroa Villalobos, Elías ,  Risopatron, Jennie ,  Valdebenito Isler, Iván ,  Farias, Jorge G. ,  [Sperm morphology and ultrastructure of Patagonian blenny (Eleginops maclovinus)] ,  Sperm morphology and ultrastructure of Patagonian blenny (Eleginops maclovinus)
Article

Autor: Lee Estevez, Manuel Herrera, Lisandra Diaz, Rommy Beltran, Jorge Figueroa Villalobos, Elías Dumorne, Kelly Ulloa Rodriguez, Patricio Short, Stefania Risopatron, Jennie Valdebenito Isler, Iván Farias, Jorge

Sperm motility in fish with external fertilization is critical for reproductive efficiency in aquaculture, especially in salmonids. Gamete preservation techniques, such as cryopreservation, however, reduce sperm motility and fertilizing capacity. Very few studies have addressed cryodamage from en...

Enlace original: http://repositoriodigital.uct.cl/handle/10925/3489

Repositorio Digital Universidad Católica de Temuco
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Lee Estevez, Manuel ,  Herrera, Lisandra ,  Diaz, Rommy ,  Beltran, Jorge ,  Figueroa Villalobos, Elías ,  Dumorne, Kelly ,  Ulloa Rodriguez, Patricio ,  Short, Stefania ,  Risopatron, Jennie ,  Valdebenito Isler, Iván ,  Farias, Jorge ,  [Effects of cryopreservation on cAMP-dependent protein kinase and AMP-activated protein kinase in Atlantic salmon (Salmo salar) spermatozoa: Relation with post-thaw motility] ,  Effects of cryopreservation on cAMP-dependent protein kinase and AMP-activated protein kinase in Atlantic salmon (Salmo salar) spermatozoa: Relation with post-thaw motility
Article

Autor: Bravo, Williams Dumorne, Kelly Beltran Lissabet, Jorge Jara Seguel, Pedro Romero, Jaime Farias, Jorge G. Risopatron, Jennie Valdebenito Isler, Iván Figueroa Villalobos, Elías

The aim of this study was to evaluate effects of selection using the Percoll density gradient method on motility, mitochondrial membrane potential (Delta Psi Mit) and fertility in a subpopulation of testicular spermatozoa obtained from Atlantic salmon (Salmo salar). Samples were divided into thre...

Enlace original: http://repositoriodigital.uct.cl/handle/10925/3490

Repositorio Digital Universidad Católica de Temuco
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Bravo, Williams ,  Dumorne, Kelly ,  Beltran Lissabet, Jorge ,  Jara Seguel, Pedro ,  Romero, Jaime ,  Farias, Jorge G. ,  Risopatron, Jennie ,  Valdebenito Isler, Iván ,  Figueroa Villalobos, Elías ,  [Effects of selection by the Percoll density gradient method on motility, mitochondrial membrane potential and fertility in a subpopulation of Atlantic salmon (Salmo salar) testicular spermatozoa] ,  Effects of selection by the Percoll density gradient method on motility, mitochondrial membrane potential and fertility in a subpopulation of Atlantic salmon (Salmo salar) testicular spermatozoa
Review

Autor: Magnotti, Caio Cerqueira, Vinicius Lee Estevez, Manuel Farias, Jorge G. Valdebenito Isler, Iván Figueroa Villalobos, Elías

Semen conservation methods have been extensively studied for fish species over the last 60years. Cryopreservation techniques can be divided into two types: one with slow cooling rates like traditional freezing and the other with ultrarapid rates as used in vitrification. These protocols increase ...

Enlace original: http://repositoriodigital.uct.cl/handle/10925/3491

Repositorio Digital Universidad Católica de Temuco
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Magnotti, Caio ,  Cerqueira, Vinicius ,  Lee Estevez, Manuel ,  Farias, Jorge G. ,  Valdebenito Isler, Iván ,  Figueroa Villalobos, Elías ,  [Cryopreservation and vitrification of fish semen: a review with special emphasis on marine species] ,  Cryopreservation and vitrification of fish semen: a review with special emphasis on marine species
Abstract

Autor: Figueroa Villalobos, Elías Lee Estevez, M. Risopatron, J. Valdebenito Isler, Iván Pinheiro de Souza, R. Farias, J. G.
Enlace original: http://repositoriodigital.uct.cl/handle/10925/3492

Repositorio Digital Universidad Católica de Temuco
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Figueroa Villalobos, Elías ,  Lee Estevez, M. ,  Risopatron, J. ,  Valdebenito Isler, Iván ,  Pinheiro de Souza, R. ,  Farias, J. G. ,  [EFFECTS OF CRYOPRESERVATION ON OXIDATIVE STRESS AND ANTIOXIDANT ENZYME ACTIVITY IN SPERMATOZOA OF ATLANTIC SALMON (Salmo salar)] ,  EFFECTS OF CRYOPRESERVATION ON OXIDATIVE STRESS AND ANTIOXIDANT ENZYME ACTIVITY IN SPERMATOZOA OF ATLANTIC SALMON (Salmo salar)
Article

Autor: Beltran Lissabet, Jorge Felix Herrera Belen, Lisandra Lee Estevez, Manuel Risopatron, Jennie Valdebenito Isler, Iván Figueroa Villalobos, Elías Farias, Jorge G.

Among all the Ca2+ channels, CatSper channels have been one of the most studied in sperm of different species due to their demonstrated role in the fertilization process. In fish sperm, the calcium channel plays a key role in sperm activation. However, the functionality of the CatSper channels ha...

Enlace original: http://repositoriodigital.uct.cl/handle/10925/3535

Repositorio Digital Universidad Católica de Temuco
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Beltran Lissabet, Jorge Felix ,  Herrera Belen, Lisandra ,  Lee Estevez, Manuel ,  Risopatron, Jennie ,  Valdebenito Isler, Iván ,  Figueroa Villalobos, Elías ,  Farias, Jorge G. ,  [The CatSper channel is present and plays a key role in sperm motility of the Atlantic salmon (Salmo salar)] ,  The CatSper channel is present and plays a key role in sperm motility of the Atlantic salmon (Salmo salar)
Review

Autor: Figueroa Villalobos, Elías Valdebenito Isler, Iván Zepeda, Andrea B. Figueroa, Carolina A. Dumorne, Kelly Castillo, Rodrigo L. Farias, Jorge G.

The development of sperm cryopreservation has enabled transcendental changes to occur in the reproductive biotechnology of both mammals and fish; it has become a basic tool for animal improvement. Nevertheless, these protocols cause damage to cell structure and physiology, altering sperm function...

Enlace original: http://repositoriodigital.uct.cl/handle/10925/3716

Repositorio Digital Universidad Católica de Temuco
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Figueroa Villalobos, Elías ,  Valdebenito Isler, Iván ,  Zepeda, Andrea B. ,  Figueroa, Carolina A. ,  Dumorne, Kelly ,  Castillo, Rodrigo L. ,  Farias, Jorge G. ,  [Effects of cryopreservation on mitochondria of fish spermatozoa] ,  Effects of cryopreservation on mitochondria of fish spermatozoa
Article

Autor: Magnotti, C. Figueroa Villalobos, Elías Farias, J. G. Merino, O. Valdebenito Isler, Iván Oliveira, R. P. S. Cerqueira, V.

In this article we describe basic aspects of the sperm biology of lebranche mullet (Mugil liza) in the wild and in captivity, in particular assessing the effects of salinity (0, 10, 20, 30, 35, 40, 50 and 60 g L-1) and pH (6, 7, 8, 9 and 10) on sperm motility. Our results indicate that the highes...

Enlace original: http://repositoriodigital.uct.cl/handle/10925/3840

Repositorio Digital Universidad Católica de Temuco
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Magnotti, C. ,  Figueroa Villalobos, Elías ,  Farias, J. G. ,  Merino, O. ,  Valdebenito Isler, Iván ,  Oliveira, R. P. S. ,  Cerqueira, V. ,  [Sperm characteristics of wild and captive lebranche mullet Mugil liza (Valenciennes, 1836), subjected to sperm activation in different pH and salinity conditions] ,  Sperm characteristics of wild and captive lebranche mullet Mugil liza (Valenciennes, 1836), subjected to sperm activation in different pH and salinity conditions
Article

Autor: Figueroa Villalobos, Elías Farias, J. G. Lee Estevez, M. Valdebenito Isler, Iván Risopatron, J. Magnotti, C. Romero, J. Watanabe, I Oliveira, R. P. S.

The use of alpha-tocopherol and ascorbic acid in freezing medium prevents lipoperoxidation and damage by ROS (reactive oxygen species); however, the effects of these antioxidants in salmonid spermatozoa have not been studied. In this work the protective effects of antioxidants on the enzymatic ac...

Enlace original: http://repositoriodigital.uct.cl/handle/10925/3926

Repositorio Digital Universidad Católica de Temuco
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Figueroa Villalobos, Elías ,  Farias, J. G. ,  Lee Estevez, M. ,  Valdebenito Isler, Iván ,  Risopatron, J. ,  Magnotti, C. ,  Romero, J. ,  Watanabe, I ,  Oliveira, R. P. S. ,  [Sperm cryopreservation with supplementation of alpha-tocopherol and ascorbic acid in freezing media increase sperm function and fertility rate in Atlantic salmon (Salmo salar)] ,  Sperm cryopreservation with supplementation of alpha-tocopherol and ascorbic acid in freezing media increase sperm function and fertility rate in Atlantic salmon (Salmo salar)
Article

Autor: Calaf, Gloria M. Zepeda, Andrea B. Castillo, Rodrigo L. Figueroa, Carolina A. Arias, Consuelo Figueroa Villalobos, Elías Farias, Jorge G.

Despite continuous advances in the knowledge of breast cancer pathophysiology, this type of neoplasia remains a leading cause of cancer-related death in women worldwide. Carcinogenesis takes a progressive course from somatic mutations, alteration of the DNA repair mechanisms, inhibition of growth...

Enlace original: http://repositoriodigital.uct.cl/handle/10925/3924

Repositorio Digital Universidad Católica de Temuco
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Calaf, Gloria M. ,  Zepeda, Andrea B. ,  Castillo, Rodrigo L. ,  Figueroa, Carolina A. ,  Arias, Consuelo ,  Figueroa Villalobos, Elías ,  Farias, Jorge G. ,  [Molecular aspects of breast cancer resistance to drugs (Review)] ,  Molecular aspects of breast cancer resistance to drugs (Review)

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