Despite recent advances in diagnosis, tuberculosis (TB) remains one of the ten leading causes of death worldwide. Here, we engineered Mycobacterium tuberculosis (Mtb) proteins (ESAT6, CFP10, and MTB7.7) to self-assemble into core-shell nanobeads for enhanced TB diagnosis.Respective purified Mtb antigen-coated polyester beads were characterized and their functionality in TB diagnosis was tested in whole blood cytokine release assays. Sensitivity and specificity were studied in 11 pulmonary TB patients (PTB) and 26 healthy individuals composed of 14 Tuberculin Skin Test negative (TSTn) and 12 TST positive (TSTp). The production of 6 cytokines was determined (IFNγ, IP10, IL2, TNFα, CCL3, and CCL11). To differentiate PTB from healthy individuals (TSTp + TSTn), the best individual cytokines were IL2 and CCL11 (>80% sensitivity and specificity) and the best combination was IP10 + IL2 (>90% sensitivity and specificity). We describe an innovative approach using full-length antigens attached to biopolyester nanobeads enabling sensitive and specific detection of human TB.
La bibliometría se ha utilizado para la evaluación de las diferentes áreas del conocimiento, con el objetivo de definir políticas de evaluación a los investigadores, así como definir líneas de investigación. Las ciencias aplicadas generalmente han sido las más estudiadas, no obstante, se conoce que el caso de las ciencias sociales tiene un comportamiento diferente. Por ello esta investigación describe el comportamiento bibliométrico de la temática Ciencias de la Información en América Latina y el Caribe; teniendo en cuenta las dimensiones de la producción científica, el impacto, la colaboración y la evaluación bibliométrica a nivel individual. Se utilizó para el análisis bibliométrico de los artículos científicos elaborados en la base de datos Scopus; en el periodo 2008-2012 en relación con la materia de Ciencias de la Información. Para el procesamiento y visualización de los datos, se utilizaron los programas Ucinet y Bibexcel, respectivamente. Se determinó que los investigadores de América Latina tienen el hábito de publicar sus resultados de investigación en revistas regionales. Aunque la colaboración nacional es predominante, Europa es el continente que estableció una cooperación más estrecha con América Latina. Brasil se destacó en las dimensiones de la producción, el impacto y la colaboración. La mayor influencia en la comunidad científica se obtuvo con las revistas de alto factor de impacto. Se concluye que se debe fortalecer la cultura de la publicación por parte de los investigadores de la región en revistas internacionales.AbstractBibliometrics was used to evaluate the different areas of knowledge, with the aim of defining policies for evaluation researchers and define lines of research. The applied sciences have generally been the most studied, however it is known that the case of the social sciences have a different behavior. That is why this research describes the behavior of the subject bibliometric Information Sciences in Latin America and the Caribbean; taking into account the dimensions of scientific production, impact, collaboration and bibliometric assessment at the individual level. Bibliometric analysis from scientific papers processed in the Scopus database; in the period 2008 to 2012 related to the subject area of Information Sciences were used as techniques. For processing and displaying was used the Bibexcel and the Ucinet programs. It was determined that Latin American researchers have the habit of publishing their research results in regional magazines. Although national collaboration is predominantly, Europe is the continent which established closer cooperation with Latin America. Brazil stood out in the dimensions of production, impact and collaboration. The greatest influence on the scientific community was obtained with the journals of high impact factor. It is concluded that should strengthen the culture of publication by researchers from the region in international journals.
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