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15 results on '"Salas, Rosalba"'

1. Aptitud clínica en residentes de medicina familiar; una aproximación hacia su evaluación. Diseño multicéntrico

Author

Leyva González, Félix Arturo, primary, Gómez Arteaga, Gress Marissell, primary, Gómez Clavelina, Francisco Javier F., primary, Degollado Bardales, Lilia, primary, Aguirre García, María Del Carmen, primary, Vega Mendoza, Santa, primary, Guerrero Hernández, Rosa Elvia, primary, Aladro, Alicia Ceja, primary, Martínez Ángeles, Jesús, primary, Beltrán Lagunes, Luis, primary, González Domínguez, Ricardo, primary, Hernández Hernández, Miguel Angel, primary, González Salinas, Consuelo, primary, Leyva Salas, Rosalba Isabel, primary, Gómez Arteaga, Martha Angélica, primary, Cruz Avelar, Agles, primary, Contreras Angulo, David Alejandro, primary, and Angulo Bernal, Nancy Beatriz, primary

Published
2023
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4. Venezuelan haemorrhagic fever

Author

Salas, Rosalba, De Manzione, Nuris, Tesh, Robert B., Rico-Hesse, Rebecca, Shope, Robert E., Betancourt, Adelfa, Godoy, Oswaldo, Bruzual, Rafael, Pacheco, Maria E., Ramos, Bricio, Taibo, Maria E., Tamayo, Jorge Garcia, Jaimes, Edgar, Vasquez, Clovis, Araoz, Francisco, and Querales, Jesus

Subjects
Arenavirus diseases -- Demographic aspects, Arenaviruses, Hemorrhagic fever -- Venezuela
Published
1991

5. Family cluster of Mayaro fever, Venezuela

Author

Torres, Jaime R., Russell, Kevin L., Vasquez, Clovis, Barrera, Roberto, Tesh, Robert B., Salas, Rosalba, and Watts, Douglas M.

Subjects
Arthritis -- Development and progression
Abstract

A cluster of protracted migratory polyarthritis involving four adult family members occurred in January 2000 after a brief overnight outing in a rural area of Venezuela. Laboratory testing demonstrated Mayare [...]

Published
2004

13. Lectura crítica de informes de investigación clínica en estudiantes de pregrado.

Author

Carranza-Lira, Sebastián, Arce-Herrera, Rosa María, Leyva-Salas, Rosalba Isabel, and Leyva-González, Félix Arturo

Subjects
READING comprehension, CLINICAL trials, MEDICAL students, MEDICAL equipment, CLINICAL indications, MEDICAL statistics, RESIDENTS (Medicine)
Abstract

Copyright of Revista Medica del IMSS is the property of Direccion de Prestaciones Medicas - IMSS 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
2009

14. Dengue Virus Structural Differences That Correlate with Pathogenesis

Author

Leitmeyer, Katrin C., Vaughn, David W., Watts, Douglas M., Salas, Rosalba, Villalobos, Iris, Chacon, de, Ramos, Celso, and Rico-Hesse, Rebeca

Abstract

ABSTRACTThe understanding of dengue virus pathogenesis has been hampered by the lack of in vitro and in vivo models of disease. The study of viral factors involved in the production of severe dengue, dengue hemorrhagic fever (DHF), versus the more common dengue fever (DF), have been limited to indirect clinical and epidemiologic associations. In an effort to identify viral determinants of DHF, we have developed a method for comparing dengue type 2 genomes (reverse transcriptase PCR in six fragments) directly from patient plasma. Samples for comparison were selected from two previously described dengue type 2 genotypes which had been shown to be the cause of DF or DHF. When full genome sequences of 11 dengue viruses were analyzed, several structural differences were seen consistently between those associated with DF only and those with the potential to cause DHF: a total of six encoded amino acid charge differences were seen in the prM, E, NS4b, and NS5 genes, while sequence differences observed within the 5' nontranslated region (NTR) and 3' NTR were predicted to change RNA secondary structures. We hypothesize that the primary determinants of DHF reside in (i) amino acid 390 of the E protein, which purportedly alters virion binding to host cells; (ii) in the downstream loop (nucleotides 68 to 80) of the 5' NTR, which may be involved in translation initiation; and (iii) in the upstream 300 nucleotides of the 3' NTR, which may regulate viral replication via the formation of replicative intermediates. The significance of four amino acid differences in the nonstructural proteins NS4b and NS5, a presumed transport protein and the viral RNA polymerase, respectively, remains unknown. This new approach to the study of dengue virus genome differences should better reflect the true composition of viral RNA populations in the natural host and permit their association with pathogenesis.

Published
1999
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15. [Critical reading of clinical investigation reports in pregraduate students].

Author

Carranza-Lira S, Arce-Herrera RM, Leyva-Salas RI, and Leyva-González FA

Subjects
Adult, Female, Humans, Male, Young Adult, Biomedical Research, Judgment, Reading, Students, Medical
Abstract

Objective: To evaluate the development of critical reading (CR) of clinical research texts (CRT) in medical students., Methods: In 65 students an instrument for the evaluation of CR of CRT was applied. Four groups from three universities were studied: an academic excellence group (n = 21), B1 (n = 19) and B2 (n = 12), C (n = 13). The instrument had eight CRT with 150 items; 50 items to any of the following indicators: interpretation, judgment and proposition. The items were balanced in 50 % false and 50 % true. It was analyzed the global management degrade and by indicator., Statistical Analysis: Kruskal-Wallis and Mann-Whitney U test was used., Results: Age 22 (median) 20-28 (range) years, gender 56.9 % women, without differences between the three universities. The global score was 50.5 (8 to 112). Group A had statistically significant higher results in global score and by indicator (p < 0.001) in relation with the other universities. According to the interpretation, judgment and proposition indicators, group A had the higher score., Conclusions: The results are similar to those observed in medical residents, because the development degrade for CR reading was low.

Published
2009

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