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Clade 8 and clade 6 strains of Escherichia coli O157:H7 from cattle in Argentina have Hypervirulent-Like phenotypes
Amigo, Natalia; Mercado, Elsa Cristina; Bentancor, Adriana Beatriz; Singh, Pallavi; Vilte, Daniel Alejandro; Gerhardt, Elizabeth; Zotta, Elsa; Ibarra, Cristina Adriana; Manning, Shannon D.; Larzabal, Mariano; Cataldi, Angel Adrian (PLOS, 2015-06-01)The hemolytic uremic syndrome (HUS) whose main causative agent is enterohemorrhagic Escherichia coli (EHEC) O157:H7 is a disease that mainly affects children under 5 years of age. Argentina is the country with the highest ... -
Estudio y evaluación de la dinámica de resistencia a cefalosporinas y fluoroquinolonas en Salmonella spp. y Escherichia coli en animales de producción
Dominguez, Johana Elizabeth (Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, 2016)El alarmante incremento de la resistencia bacteriana a los antimicrobianos (ATM) es sin duda, uno de los mayores problemas actuales de la salud pública. Estos compuestos constituyen una de las principales herramientas para ... -
Evaluación de proteínas de una isla de patogenicidad y de envolturas bacterianas de Escherichia coli 0157:H7 como vacunas para reducir su incidencia en bovinos
Vilte, Daniel Alejandro (Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, 2015-11)Escherichia coli enterohemorrágico (EHEC) es un patógeno que puede causar diarrea, colitis hemorrágica, y síndrome urémico hemolítico (SUH), una enfermedad sistémica grave que afecta principalmente a los niños. En Argentina ... -
Immune response in calves vaccinated with type three secretion system antigens and shiga toxin 2B subunit of Escherichia coli O157:H7
Martorelli, Luisina; Garbaccio, Sergio Gabriel; Vilte, Daniel Alejandro; Albanese, Adriana Andrea; Mejías, María Pilar; Palermo, Marina Sandra; Mercado, Elsa Cristina; Ibarra, Cristina E.; Cataldi, Angel Adrian (2017-01-03)Ruminants are the primary reservoir of Shiga-toxin producing Escherichia coli (STEC) O157:H7 and the main source of infection for humans. The aim of this study was to assess the immunogenic properties of a candidate vaccine ... -
Immunization of pregnant cows with Shiga toxin-2 induces high levels of specific colostral antibodies and lactoferrin able to neutralize E. coli O157:H7 pathogenicity
Albanese, Adriana Andrea; Sacerdoti, Flavia; Seyahian, E. Abril; Amaral, María Marta; Fiorentino, Gabriela; Fernández Brando, Romina; Vilte, Daniel Alejandro; Mercado, Elsa Cristina; Palermo, Marina Sandra; Cataldi, Angel Adrian; Zotta, Elsa; Ibarra, Cristina Adriana (2018-03)E. coli O157:H7 is a foodborne pathogen responsible for bloody diarrhea, hemorrhagic colitis and hemolytic uremic syndrome (HUS). The objective of the present work was to evaluate the ability of colostral IgG obtained from ... -
The intranasal vaccination of pregnant dams with Intimin and EspBconfers protection in neonatal mice from Escherichia coli (EHEC)O157:H7 infection
Rabinovitz, Bettina Carol; Larzabal, Mariano; Vilte, Daniel Alejandro; Cataldi, Angel Adrian; Mercado, Elsa Cristina (2016-05)Enterohemorrhagic Escherichia coli (EHEC) O157:H7 is responsible for intestinal disease and hemolytic uremic syndrome (HUS), a serious systemic complication which particularly affects children. In this study, we evaluated ... -
Molecular characterization and antimicrobial resistance profiles of Salmonella Heidelberg isolates from poultry
Dominguez, Johanna Elizabeth; Viñas, María Rosa; Herrera, Mariana; Moroni, Mirian; Gutkind, Gabriel Omar; Mercado, Elsa Cristina; Di Conza, José Alejandro; Chacana, Pablo (Wiley, 2021-02)In the last 10 years, Salmonella Heidelberg has been extensively isolated from poultry in several countries. In this context, molecular characterization is essential to understand whether the strains have entered the farms ... -
Necrotic Enteritis in Young Calves
Morris, Winston Eduardo; Venzano, Agustin Jose; Elizondo, Ana Maria; Vilte, Daniel Alejandro; Mercado, Elsa Cristina; Fernandez Miyakawa, Mariano Enrique (Sage Publishing, 2011-03)Non–enterotoxin (CPE)–producing Clostridium perfringens type A has been associated with enteritis in calves. Recent evidence has suggested that a novel toxin, named beta2 (CPB2), is implicated in the pathogenesis of this ... -
Physiopathological effects of Escherichia coli O157:H7 inoculation in weaned calves fed with colostrum containing antibodies to EspB and Intimin
Rabinovitz, Bettina Carol; Vilte, Daniel Alejandro; Larzabal, Mariano; Abdala, Alejandro Ariel; Galarza, Roxana Ivon; Zotta, Elsa; Ibarra, Cristina E.; Mercado, Elsa Cristina; Cataldi, Angel Adrian (Elsevier, 2014-06-24)Escherichia coli O157:H7 is responsible for severe intestinal disease and hemolytic uremic syndrome (HUS), a serious systemic complication which particularly affects children. Cattle are the primary reservoir for E. coli ... -
Shiga toxin-producing Escherichia coli (STEC) O22:H8 isolated from cattle reduces E. coli O157:H7 adherence in vitro and in vivo
Martorelli, Luisina; Albanese, Adriana Andrea; Vilte, Daniel Alejandro; Cantet, Rodolfo Juan Carlos; Bentancor, Adriana Beatriz; Zolezzi, Gisela; Chinen, Isabel; Ibarra, Cristina E.; Rivas, Marta; Mercado, Elsa Cristina; Cataldi, Angel Adrian (2017-09)Problem addressed: Shiga toxin-producing Escherichia coli (STEC) are a group of bacteria responsible for foodassociated diseases. Clinical features include a wide range of symptoms such as diarrhea, hemorrhagic colitis and ...