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Genomic analysis of shiga toxin-containing Escherichia coli O157:H7 isolated from Argentinean cattle
Amadio, Ariel; Bono, James L.; Irazoqui, Jose Matias; Larzabal, Mariano; Marques Da Silva, Wanderson; Eberhardt, María Florencia; Riviere, Nahuel Agustin; Gally, David; Manning, Shannon D.; Cataldi, Angel Adrian (Plos, 2021-10)Cattle are the main reservoir of Enterohemorrhagic Escherichia coli (EHEC), with O157:H7 the distinctive serotype. EHEC is the main causative agent of a severe systemic disease, Hemolytic Uremic Syndrome (HUS). Argentina ... -
Genotyping Mycobacterium bovis from cattle in the Central Pampas of Argentina: tempoal and regional trends
Shimizu, Ernesto; Macias, Analía; Paolicchi, Fernando; Magnano, Gabriel; Zapata, Laura; Fernandez, Analía; Canal, Ana María; Garbaccio, Sergio Gabriel; Cataldi, Angel Adrian; Caimi, Karina Cynthia; Zumarraga, Martin Jose (Fundacao Oswaldo Cruz, Brasil, 2014-04)Mycobacterium bovis is the causative agent of bovine tuberculosis (TB), a disease that affects approximately 5% of Argentinean cattle. Among the molecular methods for genotyping, the most convenient are spoligotyping and ... -
La genómica de las micobacterias
Viale, Mariana; Zumarraga, Martin Jose; Araujo, Flabio Ribeiro de; Zarraga, Ana Maria; Cataldi, Angel Adrian; Romano, Maria Isabel; Bigi, Fabiana (Office International des Epizooties, 2016)Las especies Mycobacterium bovis y Mycobacterium avium subsp. paratuberculosis son los agentes causales de la tuberculosis y la paratuberculosis en animales, respectivamente. Además, ambas micobacterias, pero fundamentalmente ... -
Identification and evaluation of new Mycobacterium bovis antigens in the in vitro interferon gamma release assay for bovine tuberculosis diagnosis
Eirin, Maria Emilia; Macías, Analía; Magnano, Gabriel; Morsella, Claudia Graciela; Mendez, Laura Luján; Blanco, Federico Carlos; Bianco, María Veronica; Severina, Walter; Alito, Alicia Elsa; Pando, Maria de los Angeles; Singh, Mahavir G.; Spallek, Ralph; Paolicchi, Fernando; Bigi, Fabiana; Cataldi, Angel Adrian (Elsevier, 2015-12)Bovine tuberculosis (bTB) is a common zoonotic disease, caused by Mycobacterium bovis (M. bovis), responsible for significant economic losses worldwide. Its diagnosis is based on the detection of cell mediated immunity ... -
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 ... -
Immunohistochemical detection of pro-inflammatory and anti-inflammatory cytokines in granulomas in cattle with natural Mycobacterium bovis infection
Canal, Ana María; Pezzone, Natalia; Cataldi, Angel Adrian; Zumarraga, Martin Jose; Larzabal, Mariano; Garbaccio, Sergio Gabriel; Fernández, Analía; Dominguez, Lucas; Aranaz, Alicia; Rodriguez-Bertos, Antonio (2017)Cellular immune response was evaluated in lymph nodes and lung with different granulomatous lesions from cattle naturally infected with Mycobacterium bovis. For this purpose, we assessed pro-inflammatory and anti-inflamm ... -
In vitro anti-tuberculosis activity of azole drugs against Mycobacterium tuberculosis clinical isolates
Imperiale, Belen Rocio; Cataldi, Angel Adrian; Morcillo, Nora (2017-12)Background: Latent tuberculosis has been associated with the persistence of dormant Mycobacterium tuberculosis in the organism of infected individuals, who are reservoirs of the bacilli and the source for spreading the ... -
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 ... -
Mycobacterium bovis Dmce2 double deletion mutant protects cattle against challenge with virulent M. bovis
Blanco, Federico Carlos; Bianco, María Veronica; Garbaccio, Sergio Gabriel; Meikle, Virginia; Gravisaco, María José; Montenegro, Valeria Noely; Alfonseca, Edgar; Singh, Mahavir G.; Barandiaran, Soledad; Canal, Ana María; Vagnoni, Lucas Emilio; Buddle, Bryce Malcom; Bigi, Fabiana; Cataldi, Angel Adrian (Elsevier, 2013-05)A Mycobacterium bovis strain deleted in mce2A and mce2B genes (M. bovis Δmce2) was tested as an experimental vaccine in cattle challenged with a virulent M. bovis strain. Three-and-a-half-month old calves (n = 5 to 6 per ... -
Mycobacterium bovis ESAT-6, CFP-10 and EspC antigens show high conservation among field isolates
Encinas, Micaela; Marfil, Maria Jimena; Garbaccio, Sergio Gabriel; Barandiaran, Soledad; Huertas, Pablo Sebastian; Morsella, Claudia Graciela; Macias, Analía; Magnano, Gabriel; Zapata, L.; Bigi, Fabiana; Cataldi, Angel Adrian; Paolicchi, Fernando; Zumarraga, Martin Jose; Eirin, Maria Emilia (Elsevier, 2018-07)ESAT-6, CFP-10 and EspC are virulence factors that have been extensively assayed for bovine and human tuberculosis diagnosis due their potent T-cell inducing activities. While polymorphisms of ESAT-6 and CFP-10 were analyzed, ... -
Novel Effector Protein EspY3 of Type III Secretion System from Enterohemorrhagic Escherichia coli Is Localized in Actin Pedestals
Larzabal, Mariano; Marques Da Silva, Wanderson; Riviere, Nahuel Agustín; Cataldi, Angel Adrian (MDPI AG, 2018)Enterohemorrhagic Escherichia coli (EHEC) and enteropathogenic Escherichia coli (EPEC) are attaching and effacing (A/E) pathogens, which translocate effector proteins to intestinal enterocytes through a type III secretion ... -
Overexpressed proteins in hypervirulent clade 8 and clade 6 strains of Escherichia coli O157:H7 compared to E. coli O157:H7 EDL933 clade 3 strain
Amigo, Natalia; Qi, Zhang; Amadio, Ariel; Qunjie, Zhang; Marques da Silva, Wanderson; Baiyuan, Cui; Zhongjian, Chen; Larzabal, Mariano; Cataldi, Angel Adrian; Jinlong, Bei (2016)Escherichia coli O157:H7 is responsible for severe diarrhea and hemolytic uremic syndrome (HUS), and predominantly affects children under 5 years. The major virulence traits are Shiga toxins, necessary to develop HUS and ... -
Patterns and processes of mycobacterium bovis evolution revealed by phylogenomic analyses
Patané, José S.L.; Martins Jr, Joaquim; Castelão, Ana Beatriz C.; Nishibe, Christiane; Montera, Luciana; Bigi, Fabiana; Zumarraga, Martin Jose; Cataldi, Angel Adrian; Fonseca Junior, Antônio; Roxo, Eliana; Osório, Ana Luiza Alves Rosa; Jorge, Klaudia dos Santos Goncalves; Thacker, Tyler C.; Almeida, Nalvo Franco; Araujo, Flabio Ribeiro de; Setubal, Joâo C. (Oxford University Press, 2017-03)Mycobacterium bovis is an important animal pathogen worldwide that parasitizes wild and domesticated vertebrate livestock as well as humans. A comparison of the five M. bovis complete genomes from the United Kingdom, South ... -
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 ... -
Polymorphisms of 20 regulatory proteins between Mycobacterium tuberculosis and Mycobacterium bovis
Bigi, María Mercedes; Blanco, Federico Carlos; Araujo, Flabio Ribeiro de; Thacker, Tyler C.; Zumarraga, Martin Jose; Cataldi, Angel Adrian; Soria, Marcelo Abel; Bigi, Fabiana (2016)Mycobacterium tuberculosis and Mycobacterium bovis are responsible for tuberculosis in humans and animals, respectively. Both species are closely related and belong to the Mycobacterium tuberculosis complex (MTC). M. ... -
Preparation of a working seed lot of BCG and quality control by PCR genotyping
Trovero, A.; Argüelles, Claudia; Cataldi, Angel Adrian (Asociación Argentina de Microbiología, 2010-04)The bacillus Calmette-Guérin (BCG) was obtained in 1920 after successive passages leading to the attenuation of a Mycobacterium bovis strain. For the following 40 years, BCG had been replicated, resulting in substrains ... -
Preservation of protective capacity of hyperimmune anti-Stx2 bovine colostrum against enterohemorrhagic Escherichia coli O157:H7 pathogenicity after pasteurization and spray-drying processes
Garimano, Nicolás; Diaz Vergara, Ladislao Iván; Kim, A. D.; Badin, Emiliano Emanuel; Sodero, Sonia; Bernal, Alan Mauro; Gonzalez, Diego; Amaral, María Marta; Lespinard, Alejandro R.; Porporatto, Carina; Montenegro, Mariana A.; Palermo, Marina Sandra; Larzabal, Mariano; Cataldi, Angel Adrian; Ibarra, Cristina Adriana; Sacerdoti, Flavia (Elsevier, 2021-05)Enterohemorrhagic Escherichia coli (EHEC) O157:H7 is a major etiologic agent that causes bloody diarrhea, hemorrhagic colitis, and hemolytic uremic syndrome (HUS). Shiga toxin (Stx) is the main virulence factor of EHEC ... -
Purification and characterization of a GH43 β-xylosidase from Enterobacter sp. identified and cloned from forest soil bacteria
Campos, Eleonora; Negro Alvarez, María José; Sabaris Di Lorenzo, Gonzalo Julián; Gonzalez, Sergio Alberto; Rorig, Marcela Laura; Talia, Paola Mónica; Grasso, Daniel Horacio; Sáez, Felicia; Manzanares Secades, Paloma; Ballesteros Perdices, Mercedes; Cataldi, Angel Adrian (Elsevier, 2014-03)The use of lignocellulosic biomass for second generation biofuels requires optimization of enzymatic breakdown of plant cell walls. In this work, cellulolytic bacteria were isolated from a native and two cultivated forest ... -
Replication and transmission features of two experimental vaccine candidates against bovine tuberculosis subcutaneously administrated in a murine model
Ferrara Muñiz, Ximena; Garcia, Elizabeth Andrea; Blanco, Federico Carlos; Bigi, Fabiana; Zumarraga, Martin Jose; Cataldi, Angel Adrian; Eirin, Maria Emilia (Elsevier, 2022-05)Cattle vaccination is an attractive approach in compliance with control and eradication programs against Bovine Tuberculosis (bTB). Today, there is no anti bTB vaccine licensed. Two vaccine candidates, MbΔmce2 and MbΔmce2-phoP ...