Browsing by Author "Reyes Solovera, Mónica de los"
Now showing items 1-20 of 39
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A scanning electron microscopy study of frozen thawed dog sperm during In vitro gamete interaction (Wiley, 2009)The aim of this work was to study the effects of cryopreservation on the binding and penetration of dog spermatozoa to the zona pellucida (ZP) by scanning electron microscopy (SEM). The sperm-rich fraction of six ejaculates ...
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(SOC BIOLGIA CHILE, 2011)We evaluated the effect of time and temperature on acrosin release from the acrosomal cap and the activity of this enzyme during in vitro capacitation in fresh and frozen/thawed dog sperm. Sperm-rich fractions of six ...
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(Elsevier Inc., 2017)The aim of this study was to determine the mRNA LHR and LHR protein expression pattern in the canine ovarian follicles at different stage of development throughout the estrous cycle. Dog ovaries were obtained from 1-6y ...
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(Universidad de Chile, 2018)La hembra canina presenta características reproductivas particulares comparado con las otras especies de mamíferos domésticos, donde destaca el arresto meiótico prolongado del ovocito reanudando la meiosis posterior a ...
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(Universidad de Chile, 2019)El factor de crecimiento diferencial 9 (GDF-9) y la proteína morfogénica ósea 15 (BMP-15) regulan en diferentes especies procesos esenciales para la maduración del ovocito, tales como la expansión del cúmulo. Este estudio ...
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(Universidad de Chile, 2015)El ciclo estral de la hembra canina presenta algunas características únicas al ser comparadas con otras especies de mamíferos domésticos. Sin embargo, poco se conoce de las características del desarrollo folicular en ...
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Análisis del receptor de la hormona luteinizante (LHR) durante el desarrollo folicular de la perra (Universidad de Chile, 2017)La hembra canina presenta un ciclo estral con ciertas características únicas si se compara con el de otras especies mamíferas. A lo largo del ciclo estral en la perra, se describe la secreción de hormona luteinizante (LH), ...
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(2002)Seminal and histological reproductive characteristics in three Brucella canis seropositive dogs are described. Seminal volume and sperm morphology were altered and no sperm was seen in one dog. This agrees with histological ...
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(Universidad de Chile, 2015)El potencial de autorenovación y diferenciación multilinaje ha generado expectativas respecto del uso de células madres mesenquimales (CMM) para ingeniería tisular y medicina regenerativa. En este sentido es relevante ...
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(Universidad Nacional Mayor de San Marcos, 2005)Preservation methods of spermatozoa using refrigeration have been developed for canine sperm; however, the rate of fertilization is still low, possibly due to cell damage for unknown reasons. The objective of this study ...
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(Universidad de Chile, 2015)Introducción: Uno de los factores que influye en la capacidad reproductiva y que posee un impacto a nivel testicular, es el desbalance entre las especies reactivas del oxígeno (ROS) y los mecanismos antioxidantes. Se ha ...
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(ELSEVIER SCIENCE INC, 2005-07-01)he IVM of canine oocytes is characterized by low rates of metaphase H. The objective of this study was to evaluate the effects of hCG on mciotic development of canine oocytes for culture periods up to 96 h. Oocytes were ...
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(CSIRO PUBLISHING, 2011)The present study evaluated the hypothesis that the effects of hypoxia on sheep pregnancies at high altitude (HA) are mediated by oxidative stress and that antioxidant vitamins may prevent these effects. Both HA native and ...
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(Universidad de Chile, 1999)Este trabajo estudió la maduración in vitro de ovocitos bovinos en relación a sus características morfológicas, previamente establecidas en un patrón no invasivo de clasificación. Se aspiraron folículos de 2 - 6 mm de ...
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(Universidad de Chile, 2017)Las células madre mesenquimáticas (MSC) pueden ser candidatas adecuadas para la derivación de gametos in vitro debido a su abundancia y a su alto potencial de diferenciación. La diferenciación de las células germinales ...
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(Universidad de Chile, 2016)Las células madre mesenquimales (Mesenchymal Stem Cells, MSC) son células con capacidad de auto renovación y potencial de diferenciación hacia linajes celulares mesodérmicos incluyendo el linaje miogénico. Éste último, no ...
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Evaluation of cortical granules and viability of canine oocytes during long-term in vitro maturation (BRITISH VETERINARY ASSOC, 2007-02-10)
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(BRITISH VETERINARY ASSOC, 2002-10-19)Fertility parameters of boar spermatozoa were evaluated in vitro, after freeze-thawing the semen in three different extenders containing permeable and non-permeable cryoprotectants: A (111.0mM Tris, 31.4mM citric acid, ...
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(2013)The aim of this study was to characterize in canine oocytes and cumulus cells the dynamic expression of growth differentiation factor 9 (GDF-9) in relation to meiotic development and cumulus expansion throughout invitro ...
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(CANADIAN VET MED ASSOC, 2010-07)Fetal weight and the placenta of sheep at high altitude (HA) are affected by hypoxia. Placental changes (an increase in placental size and vascularization) are greater in ewes from populations that have lived for several ...
