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Mostrando ítems 41-57 de 57
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Intramammary inoculation of Panax ginseng plays an immunoprotective role in Staphylococcus aureus infection in a murine model
Silvestrini, Paula; Beccaria, Camila; Pereyra, Elizabet Amanda Lorena; Renna, María Sol; Ortega, Hugo Hector; Calvinho, Luis Fernando; Dallard, Bibiana Elisabet; Baravalle, Celina (2017-12)The immunoprotective effect of Panax ginseng (Pg) extract was investigated in a mouse mastitis model. Lactating female mice were intramammarily inoculated with Pg or placebo, and then were challenged with S. aureus, while ... -
Involvement of matrix metalloproteinases and their inhibitors in Staphylococcus aureus chronically infected bovine mammary glands during active involution
Beccaria, Camila; Velázquez, Natalia S.; Chervaz, Victoria; Pirola, Silvana I.; Baravalle, Celina; Renna, María Sol; Calvinho, Luis Fernando; Dallard, Bibiana Elisabet (Elsevier, 2021-04)The aim of this study was to characterize the protein expression of matrix metalloproteinase-2 (MMP-2) and ‐− 9 and their inhibitors (TIMP-1 and -2) in mammary tissue of dairy cows with naturally occurring chronic S. aureus ... -
Liposomal and CpG-ODN formulation elicits strong humoral immune responses to recombinant Staphylococcus aureus antigens in heifer calves
Reidel, Ivana Gabriela; Camussone, Cecilia; Suarez Archilla, Guillermo Alejandro; Calvinho, Luis Fernando; Veaute, Carolina Melania Isabel (Elsevier, 2019-05-01)Bovine mastitis caused by Staphylococcus aureus is a serious problem in dairy production and effective immunoprophylaxis is an unmet goal so far. The objective of this work was to assess the humoral immune response of ... -
Panax ginseng extract reduces Staphylococcus aureus internalization into bovine mammary epithelial cells but does not affect macrophages phagocytic activity
Beccaria, Camila; Silvestrini, Paula; Renna, María Sol; Ortega, Hugo Hector; Calvinho, Luis Fernando; Dallard, Bibiana Elisabet; Baravalle, Celina (2018-09)Panax ginseng extract (PGe) has been shown to possess immunomodulatory effects in healthy dairy cows at drying off and to trigger an adequate immune response to protect from an experimental intramammary infection (IMI) ... -
Preparation and characterization of a Staphylococcus aureus capsular polysaccharide-protein conjugate prepared by a low cost technique: a proof-of-concept study
Pujato, Nazarena; Díaz, Germán; Barbagelata, Maria Sol; Vicco, Miguel Hernán; Calvinho, Luis Fernando; Marcipar, Ivan Sergio (2015-01)Staphylococcus aureus is a worldwide distributed pathogen that produces several diseases in many species and is the major cause of mastitis in dairy cows. S. aureus capsular polysaccharide 5 (CP5) has been widely proposed ... -
Prevalencia de bacterias patógenas de mastitis bovina en leche de tanque de frío y evaluación de medios de cultivos para el recuento y la identificación de Staphylococcus aureus
Neder, Veronica Elizabeth; Signorini, Marcelo; Cuatrin, Alejandra; Gianre, Vilma Rita; Calvinho, Luis Fernando (2014)El objetivo del presente estudio fue estimar la prevalencia de bacterias patógenas de mastitis en muestras de leche de tanque en tambos ubicados en la cuenca lechera central Argentina. Además, se evaluó el desempeño de ... -
Proliferation-apoptosis balance in Staphylococcus aureus chronically infected bovine mammary glands during involution
Andreotti, Carolina Soledad; Pereyra, Elizabet Amanda Lorena; Sacco, Sofía Clara; Baravalle, Celina; Renna, Maria Sol; Ortega, Hugo Hector; Calvinho, Luis Fernando; Dallard, Bibiana Elisabet (2017-05)The objective of this study was to determine whether Staphylococcus aureus chronic intramammary infection (IMI) influences expression of proteins related to regulation of proliferation and apoptosis processes and ... -
Relaciones entre el recuento de células somáticas, test de mastitis California, conductividad eléctrica y el diagnóstico de mastitis subclínicas en cabras lecheras
Suarez, Victor Humberto; Martinez, Gabriela Marcela; Gianre, Vilma Rita; Rachoski, A.; Calvinho, Luis Fernando; Chávez, M.; Salatin, Antonio Omar; Orozco, S.; Sánchez, V.; Bertoni, Emiliano Agustín (Gerencia de Comunicación e Imagen Institucional, DNA SICC, INTA, 2014-08)En el tambo caprino, las mastitis son un problema sanitario mayor que afecta tanto la productividad como la inocuidad y calidad de los productos. Debido a que el diagnóstico de las mastitis subclínicas plantea problemas ... -
Risk factors of S. aureus intramammary infection in pre partum dairy heifers under grazing conditions and molecular characterization of isolates from heifers and cows
Camussone, Cecilia; Molineri, Ana Ines; Signorini, Marcelo; Neder, Veronica Elizabeth; Vitulich, Carlos Alberto; Calvinho, Luis Fernando (Cambridge University Press, 2020-02)The aims of the research reported here were to identify potential risk factors associated with the presence of Staphylococcus aureus intramammary infection (IMI) in pre partum dairy heifers on 17 dairy farms from three ... -
Short communication: Relationship between the level of bovine leukemia virus antibody and provirus in blood and milk of cows from a naturally infected herd
Jaworski, Juan Pablo; Porta, Natalia Gabriela; Gutierrez, Gerónimo; Politzki, Romina Paula; Alvarez, Irene; Galarza, Roxana Ivon; Abdala, Alejandro Ariel; Calvinho, Luis Fernando; Trono, Karina Gabriela (2016)We explored the relationship between the level of bovine leukemia virus antibodies and provirus load during natural infection. For that purpose, a set of 50 blood and milk paired samples were analyzed for the presence of ... -
Single nucleotide polymorphisms in candidate genes and their relation with somatic cell scores in Argentinean dairy cattle
Nani, Juan Pablo; Raschia, Maria Agustina; Carignano, Hugo; Poli, Mario Andres; Calvinho, Luis Fernando; Amadio, Ariel (2015-11)The prevention and control of bovine mastitis by enhancing natural defenses in animals is important to improve the quality of dairy products. Mastitis resistance is a complex trait which depends on genetic components, as ... -
Staphylococcus aureus chronic intramammary infection modifies protein expression of transforming growth factor beta (TGF-β) subfamily components during active involution
Andreotti, Carolina Soledad; Pereyra, Elizabet Amanda Lorena; Baravalle, Celina; Renna, Maria Sol; Ortega, Hugo Hector; Calvinho, Luis Fernando; Dallard, Bibiana Elisabet (2014-02)The objectives of this study were to determine whether Staphylococcus aureus chronic intramammary infection (IMI) influences protein expression of TGF-β subfamily components and collagen I and to examine the histomorphometric ... -
Survey of potential factors involved in the low frequency of CP5 and CP8 expression in Staphylococcus aureus isolates from mastitis of dairy cattle from Argentina, Chile, and Uruguay
Ambroggio, Maria Belen; Perrig, Melina Soledad; Camussone, Cecilia; Pujato, Nazarena; Bertón, Alicia; Gianneechini, Edgardo; Alvarez, Silvia; Marcipar, Ivan Sergio; Calvinho, Luis Fernando; Barbagelata, Maria Sol (2018-08)Staphylococcus aureus produces capsular polysaccharides (CPs) both in vivo and under defined culture conditions being serotypes 5 and 8 the most prevalent. S. aureus isolates that fail to produce CP5 or CP8 are defined as ... -
Susceptibilidad a antibióticos de Staphylococcus aureus aislados de mastitis bovina en lecherías de la cuenca central de Argentina
Neder, Veronica Elizabeth; Araujo, L.; Gianre, Vilma Rita; Calvinho, Luis Fernando (2016-09)La mastitis bovina causa cuantiosas pérdidas económicas al productor lechero y la industria láctea a nivel mundial. Staphylococcus aureus es uno de los principales patógenos mayores causantes de infecciones intramamarias, ... -
The association between mastitis and reproductive performance in seasonally-calved dairy cows managed on a pasture-based system = Asociación entre la mastitis y el desempeño reproductivo en rodeos lecheros Holstein de base pastoril y servicios estacionados
Gómez-Cifuentes, C.I.; Molineri, Ana Ines; Signorini, Marcelo; Scandolo Lucini, Daniel Edgardo; Calvinho, Luis Fernando (2014)The objective of this study was to assess association between clinical, subclinical mastitis, body condition score and the reproductive performance of cows under seasonally calving conditions in a pasture-based management ... -
Vigilancia de la resistencia antimicrobiana en animales: profundizar las iniciativas y ampliar las capacidades = Antimicrobial resistance surveillance in animals: to deepen initiatives and expand current capacities
Calvinho, Luis Fernando (Elsevier, 2021-06)La resistencia antimicrobiana (RAM) comenzó a ser detectada poco después de que el uso de antimicrobianos (AM) se difundiera para el tratamiento de infecciones en seres humanos y animales. Sin embargo, durante los últimos ... -
Which are important targets in development of S. aureus mastitis vaccine?
Scali, F.; Camussone, Cecilia; Calvinho, Luis Fernando; Cipolla, M.; Zecconi, A. (2015-06)Staphylococcus aureus represents one of the leading causes of mastitis in dairy cows worldwide. S. aureus IMI have variable outcomes due to virulence of the strain involved, immune defenses of the host, and by antibiotic ...