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A new passive immune strategy based on IgY antibodies as a key element to control neonatal calf diarrhea in dairy farms
Vega, Celina Guadalupe; Bok, Marina; Ebinger, Maren; Rocha, Lucía Alejandra; Rivolta, Alejandra Antonella; González Thomas, Valeria; Muntadas, Pilar; D’Aloia, Ricardo; Pinto, Verónica; Parreño, Viviana; Wigdorovitz, Andres (BMC, 2020-07)Background: Neonatal diarrhea remains one of the main causes of morbi-mortality in dairy calves under artificial rearing. It is often caused by infectious agents of viral, bacterial, or parasitic origin. Cows vaccination ... -
A single nanobody neutralizes multiple epochally evolving human noroviruses by modulating capsid plasticity
Salmen, Wilhelm; Hu, Liya; Bok, Marina; Chaimongkol, Natthawan; Ettayebi, Khalil; Sosnovtsev, Stanislav V.; Soni, Kaundal; Ayyar, B. Vijayalakshmi; Shanker, Sreejesh; Neill, Frederick H.; Sankaran, Banumathi; Atmar, Robert L.; Estes, Mary K.; Green, Kim Y.; Parreño, Gladys Viviana; Prasad, B. V. Venkataram (Nature Publishing Group, 2023-10)Acute gastroenteritis caused by human noroviruses (HuNoVs) is a significant global health and economic burden and is without licensed vaccines or antiviral drugs. The GII.4 HuNoV causes most epidemics worldwide. This virus ... -
Assessment of Influential Factors for Scours Associated with Cryptosporidium sp., Rotavirus and Coronavirus in Calves from Argentinean Dairy Farms
Bertoni, Emiliano Agustín; Barragán, Adrián A.; Bok, Marina; Vega, Celina Guadalupe; Martinez, Gabriela Marcela; Gil, José F.; Cimino, Rubén Oscar; Parreño, Gladys (MDPI, 2021-09)Scours is the most common disease in dairy calves, and it is a multifactorial syndrome complex. Cryptosporidium sp. (C. sp.), rotavirus group A (RVA), and bovine coronavirus (BCoV) are the three main pathogens associated ... -
Development of an IgY-Based treatment to control bovine Coronavirus diarrhea in dairy calves
Bok, Marina; Vega, Celina Guadalupe; Castells, Matias; Colina, Rodney; Wigdorovitz, Andres; Parreño, Gladys Viviana (MDPI, 2023-03)Bovine Coronavirus (BCoV) is a major pathogen associated with neonatal calf diarrhea. Standard practice dictates that to prevent BCoV diarrhea, dams should be immunized in the last stage of pregnancy to increase BCoV-specific ... -
Development of nanobody-displayed whole-cell biosensors for the colorimetric detection of SARS-CoV‑2
He, Yawen; Xu, Zhiyuan; Kasputis, Tom; Zhao, Xue; Ibañez, Itati; Pavan, Florencia; Bok, Marina; Malito, Juan Pablo; Parreño, Gladys Viviana; Yuan, Lijuan; Wright, R. Clay; Chen, Juhong (American Chemical Society, 2023-08)The accurate and effective detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is essential to preventing the spread of infectious diseases and ensuring human health. Herein, a nanobody-displayed ... -
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 ... -
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 ... -
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 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 ... -
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 ... -
Passive immunity to control Bovine coronavirus diarrhea in a dairy herd in Argentina = Inmunidad pasiva en el control de la diarrea por coronavirus bovino en un rodeo lechero de Argentina
Bok, Marina; Alassia, Martín; Frank, Flavia; Vega, Celina Guadalupe; Wigdorovitz, Andres; Parreño, Viviana (2018)Bovine coronavirus (BCoV) is a viral enteric pathogen associated with calf diarrhea worldwide being, in Argentina, mostly detected in dairy husbandry systems. The aim of the present work was to study if maternal IgG1 ... -
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 ... -
SARS-CoV-2 specific nanobodies neutralize different variants of concern and reduce virus load in the brain of h-ACE2 transgenic mice
Pavan, Florencia; Bok, Marina; Betanzos San Juan, Rafael; Malito, Juan Pablo; Marcoppido, Gisela Ariana; Franco, Diego Rafael; Militelo, Daniela Ayelen; Schammas, Juan Manuel; Bari, Sara Elizabeth; Stone, William B.; López, Krisangel; Porier, Danielle LaBrie; Muller, John Anthony; Auguste, Albert J.; Yuan, Lijuan; Wigdorovitz, Andres; Parreño, Gladys Viviana; Ibañez, Lorena Itat (MDPI, 2024-02)Since the beginning of the COVID-19 pandemic, there has been a significant need to develop antivirals and vaccines to combat the disease. In this work, we developed llama-derived nanobodies (Nbs) directed against the ...