10 results on '"García-Baltazar A"'
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2. Seroepidemiological analyses of rabies virus in two procyonid species from La Venta urban park, in Tabasco, Mexico
- Author
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Rendón-Franco, Emilio, García-Baltazar, Anahí, Muñoz-García, Claudia I., Villanueva-García, Claudia, Gama-Campillo, Lilia María, Suzán, Gerardo, Aguilar-Setién, Álvaro, and Aréchiga-Ceballos, Nidia
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- 2023
- Full Text
- View/download PDF
3. Preconception diet and its relationship with hemoglobin in rural and urban women of San Francisco Cozoaltepec and Puerto Escondido, Oaxaca
- Author
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Flores-García, Merary, primary, Cruz-Santiago, Héctor, additional, García-Baltazar, Juan Antonio, additional, Torres-Olivera, Moisés Alberto, additional, Ramírez-Figueroa, Alma Delia, additional, Ávila-Serrano, Narciso Ysac, additional, and Rincon Soto, Idana Beroska, additional
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- 2023
- Full Text
- View/download PDF
4. Libro Memorias I Encuentro Internacional de Estudiantes Investigadores y Emprendedores: en la Globalidad Multidisciplinaria de la Ciencia, Tecnología e Innovación
- Author
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Paúl Villagómez, Fernando Tenório, Deisy Milena Sorzano Rodriguez, Efraín Naranjo, Maria Del Socorro Encinas Grijalva, Idana Beroska Rincon Soto, Nelson Andrés Figueroa Mendoza, Benjamín Castillo Osorio, Freddy Anaya Yances, Francisco Bárcenas Merlano, Juan Carlos Erazo Álvarez, Cecilia Ivonne Narváez Zurita, Jenny Patricia Ortiz Quevedo, Ruth Johanna Nuñez Uribe, Gabriel Roman Melendez, Leonardo Díaz Pertuz, Velia Graciela Vera Calmet, Mirtha Mercedes Fernández Mantilla, Sandra Izquierdo Marín, César Carbache Mora, Joanna Carolina Ramírez Velásquez, Ana Cristina Naula Flores, Mercy Noemi Guadalupe Junco, Alex David Campoverde Salazar, Heriberto Rodriguez Frausto, Fabiola Lydie Rochin Berumen, Carlos Vázquez Cid de León, Merary Flores García, Juan Antonio García Baltazar, Moisés Alberto Torres Olivera, Diana Patricia Eljach Hernández, Ricardo Carlos Carrillo Córdova, Armin Trujillo Mata, Miguel Ernesto González Castañeda, Antonio Reina Sevilla, Igor Martin Ramos Herrera, Juan De Dios Robles Pastrana, Claudia Leticia Solís Palafox, Ana María Miranda Zavala, Isaac Cruz Estrada, Sandra Sofía Izquierdo-Marín, Carmela María Álvarez Sánchez, Haydee Mercedes Aguilar Armas, Silvia Verónica Estrada Gaibor, Norha Elena Loaiza Rojas, Jehan Karina Shek Montaño, Mayela Del Rayo Lechuga Nevárez, Helmer Muñoz Hernández, and Rincón Soto, Idana Beroska
- Abstract
Desde este enfoque vital surge como iniciativa, el I Encuentro internacional de docentes-estudiantes, investigadores y emprendedores, cuyo objetivo académico insta a presentar el binomio de cooperación académica del docente y su labor investigativa con los estudiantes, permitiendo el espacio para difundir sus productos científicos , en líneas y ejes con enfoque actual en la multidisciplinariedad del saber, y los avances en innovación, ciencia y tecnología y su trascendencia en el emprendedurismo de cada país. En ese sentido, la disertación de magistrales y reconocidos conferencistas internacionales, de Colombia, Argentina, Chile, México, Venezuela, permitieron rescatar la importancia y las reflexiones actuales sobre temas vinculados a la metodología, paradigmas y epistemología investigativa, así como la formación en valores como cultura, además de rescatar la importancia de la educación y su rol en la sociedad del siglo XXI, las nuevas tendencias sobre procesos de aprendizaje desde la psicología, aportes significativos desde el abordaje holístico y la investigación en prospectiva, y los avances en producción científica en países de América Latina, permitió dilucidar problemas, metodologías y propuestas para profundizar desde la academia. De igual manera, agradeciendo la participación de expertos como revisores de las investigaciones, los temas presentados cumplen con la evaluación de pares, los temas se presentaron de diferentes países de América Latina, y diversas instituciones universitarias, dando a conocer en formalidad virtual, la valiosa contribución que desde la educación se promueve para intervenir como actores sociales, políticos, Económicos en la dinámica del contexto local, nacional e internacional. En suma, todos los aportes contribuyen a reflexionar sobre la importancia de la educación, la labor docente, el aporte y la participación activa del estudiante en procesos investigativos que a su vez se extienden a su difusión, a través de eventos, publicaciones científicas. La cultura de educar emprendedores, como actividad exógena de la universidad, es un espacio académico que articula los procesos de vinculación con las organizaciones del medio socio–productivo, posibilitando la red de una plataforma básica de conocimientos y conceptos, de procesos y metodologías de gestión y administración, que permitan dotar a los estudiantes de las competencias esenciales para involucrarse en una sociedad cada vez más competitiva, más interconectada ya su vez más compleja. nacionales e internacionales. En suma, todos los aportes contribuyen a reflexionar sobre la importancia de la educación, la labor docente, el aporte y la participación activa del estudiante en procesos investigativos que a su vez se extienden a su difusión, a través de eventos, publicaciones científicas. La cultura de educar emprendedores, como actividad exógena de la universidad, es un espacio académico que articula los procesos de vinculación con las organizaciones del medio socio–productivo, posibilitando la red de una plataforma básica de conocimientos y conceptos, de procesos y metodologías de gestión y administración, que permitan dotar a los estudiantes de las competencias esenciales para involucrarse en una sociedad cada vez más competitiva, más interconectada ya su vez más compleja. nacionales e internacionales. En suma, todos los aportes contribuyen a reflexionar sobre la importancia de la educación, la labor docente, el aporte y la participación activa del estudiante en procesos investigativos que a su vez se extienden a su difusión, a través de eventos, publicaciones científicas. La cultura de educar emprendedores, como actividad exógena de la universidad, es un espacio académico que articula los procesos de vinculación con las organizaciones del medio socio–productivo, posibilitando la red de una plataforma básica de conocimientos y conceptos, de procesos y metodologías de gestión y administración, que permitan dotar a los estudiantes de las competencias esenciales para involucrarse en una sociedad cada vez más competitiva, más interconectada ya su vez más compleja. todos los aportes contribuyeron a reflexionar sobre la importancia de la educación, la labor docente, el aporte y la participación activa del estudiante en procesos investigativos que a su vez se extienden a su difusión, a través de eventos, publicaciones científicas. La cultura de educar emprendedores, como actividad exógena de la universidad, es un espacio académico que articula los procesos de vinculación con las organizaciones del medio socio–productivo, posibilitando la red de una plataforma básica de conocimientos y conceptos, de procesos y metodologías de gestión y administración, que permitan dotar a los estudiantes de las competencias esenciales para involucrarse en una sociedad cada vez más competitiva, más interconectada ya su vez más compleja. todos los aportes contribuyeron a reflexionar sobre la importancia de la educación, la labor docente, el aporte y la participación activa del estudiante en procesos investigativos que a su vez se extienden a su difusión, a través de eventos, publicaciones científicas. La cultura de educar emprendedores, como actividad exógena de la universidad, es un espacio académico que articula los procesos de vinculación con las organizaciones del medio socio–productivo, posibilitando la red de una plataforma básica de conocimientos y conceptos, de procesos y metodologías de gestión y administración, que permitan dotar a los estudiantes de las competencias esenciales para involucrarse en una sociedad cada vez más competitiva, más interconectada ya su vez más compleja. el aporte y la participación activa del estudiante en procesos investigativos que a su vez se extienden a su difusión, a través de eventos, publicaciones científicas. La cultura de educar emprendedores, como actividad exógena de la universidad, es un espacio académico que articula los procesos de vinculación con las organizaciones del medio socio–productivo, posibilitando la red de una plataforma básica de conocimientos y conceptos, de procesos y metodologías de gestión y administración, que permitan dotar a los estudiantes de las competencias esenciales para involucrarse en una sociedad cada vez más competitiva, más interconectada ya su vez más compleja. el aporte y la participación activa del estudiante en procesos investigativos que a su vez se extienden a su difusión, a través de eventos, publicaciones científicas. La cultura de educar emprendedores, como actividad exógena de la universidad, es un espacio académico que articula los procesos de vinculación con las organizaciones del medio socio–productivo, posibilitando la red de una plataforma básica de conocimientos y conceptos, de procesos y metodologías de gestión y administración, que permitan dotar a los estudiantes de las competencias esenciales para involucrarse en una sociedad cada vez más competitiva, más interconectada ya su vez más compleja.
- Published
- 2022
- Full Text
- View/download PDF
5. Experimental infection of Artibeus lituratus bats and no detection of Zika virus in neotropical bats from French Guiana, Peru, and Costa Rica suggests a limited role of bats in Zika transmission.
- Author
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Aguilar-Setién, Alvaro, Salas-Rojas, Mónica, Gálvez-Romero, Guillermo, Almazán-Marín, Cenia, Moreira-Soto, Andrés, Alfonso-Toledo, Jorge, Obregón-Morales, Cirani, García-Flores, Martha, García-Baltazar, Anahí, Serra-Cobo, Jordi, López-Roig, Marc, Reyes-Puma, Nora, Piche-Ovares, Marta, Romero-Vega, Mario, Barrantes Murillo, Daniel Felipe, Soto-Garita, Claudio, Alfaro-Alarcón, Alejandro, Corrales-Aguilar, Eugenia, López-Díaz, Osvaldo, and Pontier, Dominique
- Subjects
ZIKA virus ,MALE reproductive organs ,BATS ,ZIKA virus infections ,RABIES virus ,PYRAMIDAL neurons - Abstract
Bats are important natural reservoir hosts of a diverse range of viruses that can be transmitted to humans and have been suggested to play an important role in the Zika virus (ZIKV) transmission cycle. However, the exact role of these animals as reservoirs for flaviviruses is still controversial. To further expand our understanding of the role of bats in the ZIKV transmission cycle in Latin America, we carried out an experimental infection in wild-caught Artibeus lituratus bats and sampled several free-living neotropical bats across three countries of the region. Experimental ZIKV infection was performed in wild-caught adult bats (4 females and 5 males). The most relevant findings were hemorrhages in the bladder, stomach and patagium. Significant histological findings included inflammatory infiltrate consisting of a predominance of neutrophils and lymphocytes, in addition to degeneration in the reproductive tract of males and females. This suggests that bat reproduction might be at some level affected by ZIKV. Leukopenia was also observed in some inoculated animals. Hemorrhages, genital alterations, and leukopenia are suggested to be caused by ZIKV; however, since these were wild-caught bats, we cannot exclude other agents. Detection of ZIKV by qPCR was observed at low concentrations in only two urine samples in two inoculated animals. All other animals and tissues tested were negative. Finally, no virus-neutralizing antibodies were found in any animal. To determine ZIKV infection in nature, the blood of a total of 2056 bats was sampled for ZIKV detection by qPCR. Most of the sampled individuals belonged to the genus Pteronotus sp. (23%), followed by the species Carollia sp. (17%), Anoura sp. (14%), and Molossus sp. (13.7%). No sample of any tested species was positive for ZIKV by qPCR. These results together suggest that bats are not efficient amplifiers or reservoirs of ZIKV and may not have an important role in ZIKV transmission dynamics. Author summary: In previous works in 2008–2009, we found the presence of antibodies against flaviviruses, and viral RNA was detected in Neotropical chiropterans in Mexico, which led us to support the hypothesis that these animals could be reservoirs of flaviviruses. As controversial opinions have been exposed and based on a previous (2019) experimental ZIKV infection experiment conducted at Colorado State University using adult Artibeus males from a captive colony, in this work, we also experimentally infected adult Artibeus males complementarily adding females and using wild-caught animals instead of laboratory bats. We also monitored a diverse range of natural bat populations in Latin America for the presence of viral RNA against ZIKV in blood. A plaque reduction seroneutralization test was used for the detection of antibodies against ZIKV. Similar to the previous work, we found histopathological alterations in male testicles but also in the ovaries and oviducts of females, as well as gliosis and multifocal necrosis in pyramidal neurons and Purkinge cells of inoculated animals. Only two urine samples from inoculated animals showed viral RNA. Additionally, leukopenia and lymphoid follicular splenic hyperplasia were evidenced. In contrast to what was reported, no neutralizing antibodies against ZIKV were detected in any sample. Viral RNA within the blood was not present in any of the 2056 bat samples collected in French Guiana, Peru and Costa Rica and proceeding from 34 bat genera. These results together suggest that bats are not efficient amplifiers or reservoirs of ZIKV and might not have an important role in ZIKV transmission dynamics. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
6. Experimental infection of Artibeus lituratus bats and no detection of Zika virus in neotropical bats from French Guyana, Peru, and Costa Rica, suggest a limited role of bats in Zika transmission
- Author
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Alvaro Aguilar-Setién, Mónica Salas Rojas, Guillermo Gálvez Romero, Cenia Almazán Marín, Andrés Moreira Soto, Jorge Alfonso-Toledo, Cirani Obregón Moralesn, Martha García Flores, Anahí García Baltazar, Jordi Serra-Cobo, Marc López-Roig, Nora Reyes Puma, Marta Piche-Ovares, Mario Romero-Vega, Daniel Felipe Barrantes Murillo, Claudio Soto-Garita, Alejandro Alfaro Alarcón, Eugenia Corrales-Aguilar, Osvaldo López-Díaz, and Felix Drexler
- Abstract
Bats are important natural reservoir hosts of a diverse range of viruses that can be transmitted to humans and have been suggested that could play an important role in the Zika virus (ZIKV) transmission cycle. However, the exact role of these animals as reservoirs for Flaviviruses is still controversial. To further expand our understanding of the role of bats in the ZIKV transmission cycle in Latin America, we carried an experimental infection in wild-caught Artibeus bats and sampled several free-living neotropical bats over three countries of the region. Experimental ZIKV infection was made in free-ranging adult bats (4 females and 5 males). The most relevant gross findings were hemorrhages in the bladder, stomach and patagium. Significant histological findings included inflammatory infiltrate consisting of a predominance of neutrophils and lymphocytes, in addition to degeneration in the reproductive tract of males and females. This suggests that bat reproduction might be at some level affected by ZIKV. Leukopenia was also observed in some inoculated animals. Hemorrhages, genital alterations, and leukopenia are suggestive to be caused by ZIKV, however, since these are wild-caught bats, we can not exclude other agents. Excretion of ZIKV by qPCR was detected (low titles) in only two urine samples in two inoculated animals. All other animals and tissues tested negative. Finally, no virus-neutralizing Abs were found in any animal. To determine ZIKV infection in nature, a total of 2056 bats were blood sampled for ZIKV detection by qPCR. Most of the sampled individuals belonged to the genus Pteronotus sp. (23%), followed by the species Carollia sp. (17%); Anoura sp. (14%), and Molossus sp. (13.7 %). No sample of any tested species resulted positive to ZIKV by qPCR.These results together suggest that bats are not efficient amplifiers or reservoirs of ZIKV and may not have an important role in ZIKV transmission dynamics.Author summaryIn previous works made in 2008-2009, we have found the presence of antibodies against Flaviviruses and viral RNA has been detected in Neotropical chiropterans of Mexico, which led us to support the hypothesis that these animals could be reservoirs of Flaviviruses. As controversial opinions have been exposed, and based on a previous (2019) experimental ZIKV infection made in Colorado State University using adult Artibeus males from a captive colony, in this work we also experimentally infected adult Artibeus males complementarily adding females and using free-living animals instead of laboratory bats. We also monitored a diverse range of natural bat populations in Latin America for the presence of viral RNA against ZIKV in blood. A plaque reduction seroneutralization test was used for the detection of antibodies against ZIKV. Similar to the previous work, we found histopathological alteration in male testicles but also in ovaries and oviducts of females, as well as gliosis and multifocal necrosis in pyramidal neurons and Purkinge cells of inoculated animals. Only two urine samples from inoculated animals showed viral RNA. Additionally, leukopenia and lymphoid follicular splenic hyperplasia were evidenced. Differing to what was reported, no neutralizing antibodies against ZIKV were detected in any sample. Viral RNA within the blood was not present in any of the 2056 bat samples collected in French Guyana, Peru and Costa Rica and proceeding from 33 bat genera. These results together suggest that bats are not efficient amplifiers or reservoirs of ZIKV and might not have an important role on ZIKV transmission dynamics.
- Published
- 2022
- Full Text
- View/download PDF
7. Descriptive and Time-Series Analysis of Rabies in Different Animal Species in Mexico
- Author
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Ortega-Sánchez, Reyna, primary, Bárcenas-Reyes, Isabel, additional, Cantó-Alarcón, Germinal Jorge, additional, Luna-Cozar, Jesús, additional, E, Rojas-Anaya, additional, Contreras-Magallanes, Yesenia G., additional, González-Ruiz, Sara, additional, Cortez-García, Baltazar, additional, and Milián-Suazo, Feliciano, additional
- Published
- 2022
- Full Text
- View/download PDF
8. Dieta preconcepcional y su relación con la hemoglobina en mujeres de la zona rural y urbana de San Francisco Cozoaltepec y Puerto Escondido, Oaxaca.
- Author
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Flores-García, Merary, Santiago-Cruz, Héctor, Antonio García-Baltazar, Juan, Alberto Torres-Olivera, Moisés, Delia Ramírez-Figueroa, Alma, Ysac Ávila-Serrano, Narciso, and Rincon Soto, Idana Beroska
- Abstract
Copyright of Salud, Ciencia y Tecnología is the property of Fundacion Salud, Ciencia y Tecnologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
- Full Text
- View/download PDF
9. Natural co‐infection of divergent hepatitis B and C virus homologues in carnivores.
- Author
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Jo, Wendy K., Alfonso‐Toledo, Jorge A., Salas‐Rojas, Monica, Almazan‐Marin, Cenia, Galvez‐Romero, Guillermo, García‐Baltazar, Anahí, Obregón‐Morales, Cirani, Rendón‐Franco, Emilio, Kühne, Arne, Carvalho‐Urbieta, Victor, Rasche, Andrea, Brünink, Sebastian, Glebe, Dieter, Aguilar‐Setién, Álvaro, and Drexler, Jan Felix
- Subjects
HEPATITIS B virus ,MIXED infections ,HEPATITIS viruses ,AMINO acid sequence ,CARNIVOROUS animals - Abstract
In humans, co‐infection of hepatitis B and C viruses (HBV, HCV) is common and aggravates disease outcome. Infection‐mediated disease aggravation is poorly understood, partly due to lack of suitable animal models. Carnivores are understudied for hepatitis virus homologues. We investigated Mexican carnivores (ringtails, Bassariscus astutus) for HBV and HCV homologues. Three out of eight animals were infected with a divergent HBV termed ringtail HBV (RtHBV) at high viral loads of 5 × 109 –1.4 × 1010 copies/ml serum. Two of the RtHBV‐infected animals were co‐infected with a divergent hepacivirus termed ringtail hepacivirus (RtHV) at 4 × 106–7.5 × 107 copies/ml in strain‐specific qRT‐PCR assays. Immunofluorescence assays relying on HBV core and RtHV NS3/4a proteins indicated that none of the animals had detectable hepadnavirus core‐specific antibodies, whereas one RtHV‐infected animal had concomitant RtHV‐specific antibodies at 1:800 end‐point titre. RtHBV and RtHV complete genomes showed typical HBV and HCV structure and length. All RtHBV genomes were identical, whereas RtHV genomes showed four amino acid substitutions located predominantly in the E1/E2‐encoding genomic regions. Both RtHBV (>28% genomic nucleotide sequence distance) and RtHV (>30% partial NS3/NS5B amino acid sequence distance) formed new species within their virus families. Evolutionary analyses showed that RtHBV grouped with HBV homologues from different laurasiatherian hosts (carnivores, bats, and ungulates), whereas RtHV grouped predominantly with rodent‐borne viruses. Ancestral state reconstructions showed that RtHV, but not RtHBV, likely emerged via a non‐recent host switch involving rodent‐borne hepacivirus ancestors. Conserved hepatitis virus infection patterns in naturally infected ringtails indicate that carnivores may be promising animal models to understand HBV/HCV co‐infection. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
10. Suggested Actions to Prevent the Introduction and Establishment of the Asian Longhorned Tick Haemaphysalis longicornis in Mexico.
- Author
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Almazán, Consuelo, Umemiya-Shirafuji, Rika, Rosario-Cruz, Rodrigo, García, Baltazar Cortés, and Mosqueda, Juan
- Subjects
- *
TICK control , *ANIMAL migration , *PUBLIC officers , *GOVERNMENT agencies , *VETERINARIANS , *ANIMAL health - Abstract
The longhorned tick Haemaphysalis longicornis is a highly invasive tick that is native to Asia. Since its detection in New Jersey in 2017, this tick has spread to 18 states in the Northeast, the Midwest, and the Southeast regions of the United States. In Mexico, H. longicornis has been detected only once in an imported horse at the inspection point in Piedras Negras, Coahuila. However, the risk of introduction and establishment of this tick species is high due to importation of live animals, the frequent legal transportation of numerous pets by tourists, the migration of wildlife across the extensive northern border that is more than 3,000 km long, and the inherent difficulty in detecting immatures stages on animals. The aim of this work is to provide Spanish-language information on the distribution of H. longicornis in North America, as well as the ecological and biological aspects of this tick. This work includes morphological images of H. longicornis aimed at facilitating its accurate identification. This effort provides useful information for veterinarians, government agency officials, and other professionals involved in animal health and tick control to aid in the effective prevention of the introduction and establishment of H. longicornis in Mexico. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
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