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Mostrando ítems 1-14 de 14
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A dose-dependent response to MEK inhibition determines hypoblast fate in bovine embryos
Canizo, Jésica Romina; Ynsaurralde Rivolta, Amanda Eugenia; Vazquez Echegaray, Camila; Suvá, Mariana; Alberio, Virgilia; Aller Atucha, Juan Florencio; Guberman, Alejandra; Salamone, Daniel Felipe; Alberio, Ricardo; Alberio, Ramiro (BioMed Central, 2019-07-04)Background: The segregation of the hypoblast and the emergence of the pluripotent epiblast mark the final stages of blastocyst formation in mammalian embryos. In bovine embryos the formation of the hypoblast has been ... -
Birth of live llama (Lama glama) derived from embryo transfer storage at 5 °C for 24 h
Aller Atucha, Juan Florencio; Abalos, Marcos; Acuña, Francisco Antonio; Virgili, Rosana; Requena, Francisco; Cancino, Andrea Karina (2015-11)The objective of the present work was to evaluate the efficacy of maintaining llama embryos metabolically inhibited but viable at 5 °C during 24 h. Adult females (n = 20) were used as embryo donors and were superstimulated ... -
Bovine campylobacteriosis in bulls: insights in the conventional and molecular diagnosis
García, Juan Agustín; Farace, Pablo Daniel; Gioffre, Andrea; Morsella, Claudia Graciela; Mendez, Maria Alejandra; Acuña, Joaquín; Aller Atucha, Juan Florencio; Signorini Porchiett, Marcelo Lisandro; Paolicchi, Fernando (Springer Nature, 2023-03)Campylobacter fetus is a gram-negative motile bacterium, with two subspecies relevant to cattle health: C. fetus subsp. venerealis (Cfv) and C. fetus subsp. fetus (Cff). Both subspecies are associated with reproductive ... -
Bovine campylobacteriosis in heifer: pathogenesis study and insights in the conventional and molecular diagnosis in an experimental bovine model and field cases
Garcia, Juan Agustin; Farace, Pablo Daniel; Gioffre, Andrea; Romeo, Florencia; Verna, Andrea Elizabeth; Mendez, Maria Alejandra; Morsella, Claudia Graciela; Aller Atucha, Juan Florencio; Signorini Porchiett, Marcelo Lisandro; Paolicchi, Fernando (Springer Nature, 2024-02)Campylobacter fetus spp. is a bacterium associated to reproductive losses in cattle worldwide. It is a venereal infectious disease known as bovine campilobacteriosis, with high impact mainly in countries with extensive ... -
Calidad morfológica de ovocitos obtenidos in vivo en diferentes ondas foliculares de vacas tratadas con FSH
Aller Atucha, Juan Florencio; Callejas, Santiago; Alberio, Ricardo (Ediciones Taurus, 2020-08)Los objetivos del presente trabajo fueron determinar 1) el efecto de un tratamiento con FSH y 2) el período del ciclo estral (metaestro= primera onda folicular o diestro= segunda onda folicular) durante el crecimiento de ... -
Effect of Campylobacter fetus on in vitro fertilization and embryonic development of preimplantation bovine embryos
Cagnoli, Claudia Inés; Chiapparrone, María Laura; Cacciato, Claudio Santiago; Rodríguez, Marcelo Gastón; Catena, María del Carmen; Aller Atucha, Juan Florencio (Elsevier, 2024-01)Campylobacter fetus is an important veterinary pathogen that causes campylobacteriosis. This disease causes decreased productivity of cattle by inducing reproductive losses. Although several virulence factors have been ... -
Effect of Seminal Plasma on Post‐Thaw Quality and Functionality of Corriedale Ram Sperm Obtained by Electroejaculation and Artificial Vagina
Ledesma, Alba; Manes, Jorgelina; Rios, Glenda Laura; Aller Atucha, Juan Florencio; Cesari, Andreina; Alberio, Ricardo; Hozbor, Federico Andres (Wiley, 2015-06)We have already shown that seminal collection method affects seminal plasma composition and sperm quality in Corriedale rams. In this study, we evaluated the effect of seminal plasma collected by electroejaculation or ... -
Effects of Campylobacter fetus on bull sperm quality
Cagnioli, Claudia Inés; Chiapparrone, María Laura; Rodríguez, Marcelo Gastón; Aller Atucha, Juan Florencio; Catena María del Carmen; Cacciato, Claudio Santiago (Elsevier, 2020-09)Campylobacter fetus is a gram-negative, motile, spiral or S-shaped bacterium, which induces campylobacteriosis. This disease causes decrease productivity of cattle. Although considerable research has been done on the role ... -
Embryo yield in llamas synchronized with two different intravaginal progesterone-releasing devices and superovulated with eCG
Aller Atucha, Juan Florencio; Abalos, Marcos; Acuña, Francisco Antonio; Virgili, Rosana; Requena, Francisco; Cancino, Andrea Karina (2015)The objectives of this study were to compare the effects of two intravaginal devices (ID) containing the same dose (0.5 g) of progesterone (P4) on subsequent ovarian response, embryo production and circulating P4 concentration ... -
Exogenous human OKSM factors maintain pluripotency gene expression of bovine and porcine iPS-like cells obtained with STEMCCA delivery system
Canizo, Jésica Romina; Vazquez Echegaray, Camila; Klisch, Doris; Aller Atucha, Juan Florencio; Paz, Dante; Alberio, Ricardo; Alberio, Ramiro; Guberman, Alejandra (BioMedCentral, 2018-07-27)OBJECTIVES: The use of induced pluripotent stem (iPS) cells as an alternative to embryonic stem cells to produce transgenic animals requires the development of a biotechnological platform for their generation. In this ... -
La IATF en bovinos para carne ¿puede alterar la relación del sexo de las crías?
Aller Atucha, Juan Florencio; Rosatti, Gustavo; Brunello, Gabriela Esther; Manes, Jorgelina (Ediciones Taurus, 2021-04)Varios factores incluyendo los tratamientos para sincronización del estro afectan la relación del sexo de las crías en bovinos. Además, limitada información está disponible con respecto al sexo de las crías en relación al ... -
Isolation of Campylobacter fetus subsp. venerealis from seminal vesicle of a naturally challenged bull
García, Juan Agustín; Gioffre, Andrea; Acuña, Juaquín; Mendez, Maria Alejandra; Morsella, Claudia Graciela; Aller Atucha, Juan Florencio; Paolicchi, Fernando (Springer Verlag, 2021-09-03)Campylobacter fetus is a well-recognized pathogen that affects reproductive rate in cattle. In the present study, two Angus bulls were kept (39 days) separately with a group of heifers experimentally infected withCampylobacter ... -
Llama (Lama glama) semen collection via thermo-electric artificial vagina: effect of seasonality and collection interval on ejaculate characteristics
Ferre, Luis Bernardo; Malik, Genoveva; Aller Atucha, Juan Florencio; Alberio, Ricardo; Fresno, Cristóbal; Kjelland, Michael (Elsevier, 2015-09-09)Adult male Llamas (Lama glama) (n = 6) were collected using a receptive female and a thermo-electric artificial vagina assembled with a polyethylene collection bag with the following objectives: (a) to develop a reliable ... -
Plasma steroid profiles and ovarian response in llamas treated with eCG for superovulation combined with exogenous progesterone during early luteal phase
Aller Atucha, Juan Florencio; Abalos, Marcos; Acuña, Francisco; Cancino, Andrea Karina (Elsevier, 2019-09)The objective of this study was to evaluate the effects of plasma progesterone (P4) concentrations during eCG-ovarian follicular superstimulatory treatment performed in early luteal phase and estradiol concentrations during ...