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1.
Rev. salud pública ; 23(1): e206, ene.-feb. 2021. tab, graf
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1357412

ABSTRACT

RESUMEN Objetivo Diseñar y aplicar objetos virtuales de aprendizaje con énfasis en el estudiante y evaluar los resultados de un curso renovado en el aprendizaje de los métodos y técnicas apropiadas para el análisis de políticas públicas en salud. Metodología El proyecto se concibió como un estudio observacional, comparativo y analítico para establecer la eficacia de las innovaciones pedagógicas. De marzo a julio de 2018 se llevó a cabo el proceso de rediseño pedagógico de cada una de las unidades del curso virtual de Análisis de Políticas Públicas en Salud. El curso renovado se realizó de agosto a diciembre de 2018. Resultados Se introdujeron modificaciones en la estructura y la visualización del curso. Se llevó a cabo una innovación pedagógica por medio de las TIC, que incluyó videos de presentación del curso y de sus unidades, videos de presentación de los docentes, guías en HTML y PDF interactivos, cuestionarios en línea, presentaciones en Prezi, infografías, videoconferencias y evaluaciones en línea. Los indicadores usados muestran un mejoramiento de los logros y competencias en el curso renovado con respecto a los cursos anteriores. Discusión Los resultados del proyecto sugieren que las transformaciones pedagógicas basadas en el uso intensivo de las TIC pueden tener resultados favorables. Esto es significativo para el análisis sobre las transformaciones relevantes del "modelo pedagógico".


ABSTRACT Objective Design and use virtual learning object with particular emphasis on students and evaluate the results of an updated workshop to learn methods and skills to analyze public policies on health. Methodology The project was made like an observational, comparative, and analytical study to stablish the effectiveness of pedagogical innovations. From March to July 2018 the process of pedagogical redesign of every part of the workshop "Análisis de Políticas Públicas en Salud". The renovate course took place from August to December 2018. Results Modifications were made to the course's structure and visualization. A pedagogical innovation was made using ICT (course presentation videos, HTML guides, Interactive PDF, computer graphics, videoconferences, and online examinations). The indicators show an improvement of the achievements and competencies in the renewed course with respect to the previous courses. Discussion The results of the project suggest that the pedagogical changes based on the interactive use of ICT could have favorable outcomes. This is meaningful for the analysis of the relevant changes of the "pedagogical model".

2.
Mol Microbiol ; 110(4): 596-615, 2018 11.
Article in English | MEDLINE | ID: mdl-30192418

ABSTRACT

ExoS/ChvI two-component signaling in the nitrogen-fixing α-proteobacterium Sinorhizobium meliloti is required for symbiosis and regulates exopolysaccharide production, motility, cell envelope integrity and nutrient utilization in free-living bacteria. However, identification of many ExoS/ChvI direct transcriptional target genes has remained elusive. Here, we performed chromatin immunoprecipitation followed by microarray analysis (chIP-chip) to globally identify DNA regions bound by ChvI protein in S. meliloti. We then performed qRT-PCR with chvI mutant strains to test ChvI-dependent expression of genes downstream of the ChvI-bound DNA regions. We identified 64 direct target genes of ChvI, including exoY, rem and chvI itself. We also identified ChvI direct target candidates, like exoR, that are likely controlled by additional regulators. Analysis of upstream sequences from the 64 ChvI direct target genes identified a 15 bp-long consensus sequence. Using electrophoretic mobility shift assays and transcriptional fusions with exoY, SMb21440, SMc00084, SMc01580, chvI, and ropB1, we demonstrated this consensus sequence is important for ChvI binding to DNA and transcription of ChvI direct target genes. Thus, we have comprehensively identified ChvI regulon genes and a 'ChvI box' bound by ChvI. Many ChvI direct target genes may influence the cell envelope, consistent with the critical role of ExoS/ChvI in growth and microbe-host interactions.


Subject(s)
Bacterial Proteins/metabolism , Gene Expression Regulation, Bacterial/genetics , Sinorhizobium meliloti/genetics , Sinorhizobium meliloti/metabolism , Transcription Factors/metabolism , Bacterial Proteins/genetics , Binding Sites/genetics , DNA-Binding Proteins/genetics , Genome, Bacterial/genetics , Glucosyltransferases/genetics , Protein Binding/genetics , Signal Transduction , Symbiosis/genetics , Transcription Factors/genetics , Transcription, Genetic/genetics
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