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Mostrando ítems 21-40 de 47
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Equine rotavirus in Argentinean foals : an overview
Parreño, Viviana; Miño, Samuel; Garaicoechea, Lorena Laura; Barrandeguy, Maria Edith (2016)The aim of the present work is to summarized our knowledge and discuss the future prospects regarding this important disease of foals. -
Establishment of a gnotobiotic pig model of Clostridioides difficile infection and disease
Nyblade, Charlotte; Parreño, Gladys Viviana; Zhou, Peng; Hensley, Casey; Oakes, Vanessa; Mahsoub, Hassan M.; Kiley, Kelsey; Frazier, Maggie; Frazier, Annie; Zhang, Yongrong; Feng, Hanping; Yuan, Lijuan (BioMed Central, 2022-06)Clostridioides difficile (C. difficile) is a gram-positive, spore-forming, anaerobic bacterium known to be the most common cause of hospital-acquired and antibiotic-associated diarrhea. C. difficile infection rates are on ... -
Feasibility of polyclonal avian immunoglobulins (IgY) as prophylaxis against human norovirus infection
Artman, Chad; Idegwu, Nnebuefe; Brumfield, Kyle D.; Lai, Ken; Hauta, Shirley; Falzarano, Darryl; Parreño, Gladys Viviana; Yuan, Lijuan; Geyer, James D.; Goepp, Julius G. (MDPI, 2022-11)Background: Human norovirus (HuNoV) is the leading viral cause of diarrhea, with GII.4 as the predominant genotype of HuNoV outbreaks globally. However, new genogroup variants emerge periodically, complicating the development ... -
First report of group A rotavirus and bovine coronavirus associated with neonatal calf diarrhea in the northwest of Argentina
Bertoni, Emiliano Agustín; Aduriz Guerrero, Matías; Bok, Marina; Vega, Celina Guadalupe; Saif, Linda J.; Aguirre, Daniel Hector; Cimino, Rubén Oscar; Miño, Samuel; Parreño, Gladys Viviana (Springer, 2020-06)Group A rotavirus (RVA) and bovine coronavirus (BCoV) are the two main viral enteropathogens associated with neonatal calf diarrhea. The aim of the present survey was to investigate the epidemiology and the role of RVA and ... -
GII.4 human norovirus and G8P[1] bovine-like rotavirus in oysters (Crassostrea gigas) from Argentina
Mozgovoj, Marina Valeria; Miño, Samuel; Barbieri, Elena Susana; Tort López, Fernando; Montero, M. Victoria; Frydman, Camila Ayelén; Cap, Mariana; Barón, Pedro José; Colina, R.; Matthijnssens, Jelle; Parreño, Viviana Gladys (Elsevier, 2022-01-14)Bivalve mollusks have been widely recognized as an important source of foodborne virus. The aim of this work was to determine the presence of norovirus (NoV) and rotavirus (RVA) in Pacific cupped oyster (Crassostrea gigas) ... -
Human rotavirus replicates in salivary glands and primes immune responses in facial and intestinal lymphoid tissues of gnotobiotic pigs
Nyblade, Charlotte; Zhou, Peng; Frazier, Maggie; Frazier, Annie; Hensley, Casey; Fantasia-Davis, Ariana; Shahrudin, Shabihah; Hoffer, Miranda; Agbemabiese, Chantal Ama; LaRue, Lauren; Barro, Mario; Patton, John T.; Parreño, Gladys Viviana; Yuan, Lijuan (MDPI, 2023-08)Human rotavirus (HRV) is a leading cause of viral gastroenteritis in children across the globe. The virus has long been established as a pathogen of the gastrointestinal tract, targeting small intestine epithelial cells ... -
Influence of individual or group housing of newborn calves on rotavirus and coronavirus infection during the first 2 months of life
Bertoni, Emiliano Agustín; Bok, Marina; Vega, Celina Guadalupe; Martinez, Gabriela Marcela; Cimino, Rubén Oscar; Parreño, Gladys (Springer, 2021-01-03)Bovine rotavirus A (RVA) and bovine coronavirus (CoV) are the two main viral enteropathogens associated with neonatal calf diarrhea. The aim of the present work was to study the impact of group and individual housing systems ... -
Métodos matemáticos y modelos estadísticos aplicados a la estimación de la curva de dosis-respuesta en un estudio de exposición oral de cerdos gnotobióticos a Norovirus humano
Parreño, Gladys Viviana (Facultad de Agronomía, Universidad de Buenos Aires, 2021)Los modelos animales son utilizados en estudios pre-clínicos para reproducir las infecciones por patógenos humanos. En el proceso de estandarización de estos modelos resulta indispensable conocer cómo se producen la infección ... -
Molecular and antigenic characterization of bovine Coronavirus circulating in Argentinean cattle during 1994–2010
Bok, Marina; Miño, Samuel; Rodriguez, Daniela; Badaracco, Alejandra; Nuñes, I.; Souza, Sibele P.; Bilbao, G.; Louge Uriarte, Enrique Leopoldo; Galarza, Roxana Ivon; Vega, Celina Guadalupe; Odeon, Anselmo Carlos; Saif, LInda J.; Parreño, Gladys Viviana (Elsevier, 2015-12)Bovine coronavirus (BCoV) is an important viral pathogen associated with neonatal calf diarrhea. Our aim was to investigate the incidence of BCoV in diarrhea outbreaks in beef and dairy herds from Argentina during 1994–2010. ... -
Molecular characterization of equine rotavirus group A detected in Argentinean foals during 2009–2014
Miño, Samuel; Aduriz Guerrero, Matías; Barrandeguy, Maria Edith; Parreño, Viviana (2017-12)Equine rotavirus group A (RVA) has been detected in several countries worldwide since its first detection in 1975. Currently, equine RVA is considered the major cause of dehydrating diarrhea in foals younger than 3 months, ... -
Molecular characterization of group A rotavirus strains detected in alpacas (Vicugna pacos) from Peru
Badaracco, Alejandra; Cordero, Aida; Vega, Celina Guadalupe; Bok, Marina; Zeller, Mark; Heylen, Elisabeth; Fernández, Gonzalo; Díez-Baños, Pablo; Morrondo, Patrocinio; Guevara, Héctor; Matthijnssens, Jelle; Parreño, Gladys Viviana (Microbiology Society, 2021-04)The alpaca is a very important social and economic resource for the production of fibre and meat for Andean communities. Peru is the main producer of alpacas. Group A rotavirus (RVA) has been sporadically detected in ... -
Molecular detection of bovine Noroviruses in Argentinean dairy calves : circulation of a tentative new genotype
Ferragut, Fátima; Vega, Celina Guadalupe; Mauroy, Axel; Conceição-Neto, Nádia; Zeller, Mark; Heylen, Elisabeth; Louge Uriarte, Enrique Leopoldo; Bilbao, Gladys; Bok, Marina; Matthijnssens, Jelle; Thiry, Etienne; Badaracco, Alejandra; Parreño, Gladys Viviana (2016)Bovine noroviruses are enteric pathogens detected in fecal samples of both diarrheic and non-diarrheic calves from several countries worldwide. However, epidemiological information regarding bovine noroviruses is still ... -
Molecular engineering improves antigen quality and enables integrated manufacturing of a trivalent subunit vaccine candidate for rotavirus
Dalvie, Neil C.; Brady, Joseph R.; Crowell, Laura E.; Tracey, Mary Kate; Biedermann, Andrew M.; Kaur, Kawaljit; Hickey, John M.; Kristensen II, D. Lee; Bonnyman, Alexandra D.; Rodriguez-Aponte, Sergio A.; Whittaker, Charles A.; Bok, Marina; Vega, Celina Guadalupe; Mukhopadhyay, Tarit K.; Joshi, Sangeeta B.; Volkin, David B.; Parreño, Gladys; Love, Kerry R.; Love, J. Christopher (BMC, 2021-05)Background: Vaccines comprising recombinant subunit proteins are well-suited to low-cost and high-volume production for global use. The design of manufacturing processes to produce subunit vaccines depends, however, on the ... -
Novel viruses determined using fecal virome analysis in the feces of foals with diarrea
Vega, Celina Guadalupe; Conceição-Neto, Nádia; Miño, Samuel; Zeller, Mark; Heylen, Elisabeth; Parreño, Viviana; Barrandeguy, Maria Edith; Matthijnssens, Jelle (2016)This study aims to expand the knowledge of viral species present in feces of foals suffering diarrhea using Next Generation Sequencing. This will be useful to further explore the role of new infectious agents in this illness ... -
Occurrence of Cryptosporidium and other enteropathogens and their association with diarrhea in dairy calves of Buenos Aires province, Argentina
Garro, Carlos Javier; Morici, Gabriel Edgardo; Tomazic, Mariela Luján; Vilte, Daniel Alejandro; Encinas, Micaela; Vega, Celina Guadalupe; Bok, Marina; Parreño, Viviana; Schnittger, Leonhard (Elsevier, 2021-04)Cryptosporidiosis of neonatal dairy calves causes diarrhea, resulting in important economic losses. In Argentina, prevalence values of Cryptosporidium spp. and other enteropathogens such as group A rotavirus (RVA), bovine ... -
Phylogenetic and structural analyses of equine rotaviruses : three possible geographically related lineages
Miño, Samuel; Parreño, Viviana; Barrandeguy, Maria Edith (2016)The structural analyses revealed that the aa substitutions in VP7 are in the antigenic sites and in the VP7:VP6 interaction region. In accordance, most of the aa changes in VP6 are in the top of the protein involving ... -
Presencia de enfermedades en la cría bovina del dpto. Guachipas, Salta
Suarez, Victor Humberto; Bertoni, Emiliano Agustín; Dodero, Ana Mariela; Martinez Almudevar, Fabián Carlos; Salatin, Antonio Omar; Viñabal, Alberto; Saldaño, Rafael Bernardino; Olmos, Leandro Hipolito; Pereyra, Walter Rodrigo; Brihuega, Bibiana Felicitas; Cortez, Hector Sergio; Parreño, Gladys Viviana (Gerencia de Comunicación e Imagen Institucional, DNA SICC, INTA, 2018-12)Una encuesta transversal ad hoc se llevó a cabo en veintitrés establecimientos dedicados a la cría bovina (ECB) del depto. de Guachipas, Salta, con el objetivo de describir la presencia de enfermedades y prácticas de manejo ... -
Prevalence and viability of group A rotavirus in dairy farm water sources
Castells, M.L.; Schild, Carlos Omar; Caffarena, Rubén Dario; Bok, Marina; Giannitti, Federico; Armendano, Joaquín Ignacio; Riet‐Correa, Franklin; Victoria, M.; Parreño, Viviana; Colina, Rodney (2018-03)Aim: To analyse group A rotavirus (RVA) environmental contamination in waters used for calves' consumption and to assess viral viability in dairy farm water sources. Methods and Results: We analysed 202 samples of water ... -
Prevención y tratamiento de Rotavirus A mediante nanoanticuerpos VHH anti-VP6
Maffey, Lucia (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, 2017-06)La diarrea asociada a Rotavirus A (RVA) representa una de las principales causas de mortalidad infantil a nivel mundial. Si bien la vacunación masiva contra RVA ha logrado disminuir significativamente las muertes causadas ... -
Probiotic as adjuvant significantly improves protection of the Lanzhou trivalent rotavirus vaccine against heterologous challenge in a gnotobiotic pig model of human rotavirus infection and disease
Parreño, Gladys Viviana; Bai, Muqun; Liu, Fangning; Jing, Jiqiang; Olney, Erika; Li, Guohua; Wen, Ke; Yang, Xingdong; Castellucc, Tammy Bui; Kocher, Jacob F.; Zhou, Xu; Yuan, Lijuan (MDPI, 2022-09)This preclinical study in the gnotobiotic (Gn) pig model of human rotavirus (HRV) infection and disease evaluates the effect of probiotic Lactobacillus rhamnosus GG (LGG) as a mucosal adjuvant on the immunogenicity and ...