Efecto de los aceites esenciales de dos especies de Lippia sobre el crecimiento de hongos fitopatógenos

Chemical characterization of the essential oils of two Lippia species by GC-MS and NMR spectroscopy revealed that limonene(84.3%) and β-caryophyllene (6.1%) were the most abundant components in Lippia turbinata while (6S,7S,10S)-trans-davanone (99.1%)predominated in Lippia integrifolia. Antifungal activity of the essential oils was determined by headspace volatile exposure assay againstthe fungal phytopathogenic Sclerotinia sclerotiorum, Sclerotium rolfsii and Rhizoctonia solani. The essential oil of L. turbinata showedpotent antifungal activity against the panel of fungi tested while that the oil of L. integrifolia significantly inhibited the mycelial growth of S.rolfsii and R. solani.La caracterización química de los aceites esenciales de dos especies de Lippia por cromatografía gaseosa-espectrometría de masas (CG-EM) y espectroscopia de RMN reveló que limoneno (84,3%) y β-cariofileno (6,1%) fueron los componentes más abundantes de Lippia turbinata mientras que (6S,7S,10S)-trans-davanona (99,1%) predominó en Lippia integrifolia. La actividad antifúngica de los aceites esenciales se determinó por el ensayo de exposición a los vapores frente a los hongos fitopatógenos Sclerotinia sclerotiorum, Sclerotium rolfsii y Rhizoctonia solani. El aceite esencial de L. turbinata mostró una potente actividad antifúngica frente al panel de hongos ensayados, mientras que el aceite de L. integrifolia inhibió significativamente el crecimiento micelial de S. rolfsii y R. solani.Fil: Leal, Laura Evelyn. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentina. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Escuela de Agronomía. Laboratorio de Investigaciones Botánicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta; ArgentinaFil: Alarcon, Alejandro. Universidad Nacional de Salta. Facultad de Ciencias Naturales; ArgentinaFil: Ortega Baes, Francisco Pablo. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Escuela de Agronomía. Laboratorio de Investigaciones Botánicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta; ArgentinaFil: Cayo, Fanny. Universidad Nacional de Salta. Facultad de Ciencias Naturales; ArgentinaFil: Alarcón, Rosana. Universidad Nacional de Salta. Facultad de Ciencias Naturales; Argentin

KNOWLEDGE AND PRACTICES OF RIVERINE MOTHERS ABOUT VACCINATION

Objective: to analyze the knowledge of riverine mothers about vaccination and its influence on the practice of taking their children for vaccination.Method: qualitative/descriptive study, conducted at the Combú Family Health Unit, Belém-Pará, Brazil, with 30 riverine mothers who had children of vaccination age. Data were produced by individual interviews, whose corpus was analyzed with the software Interface de R pour les Analyses Multidimensionnelles de Textes et de Questionnaires 0.7, alpha 2, using Descending Hierarchical Classification.Results: the software generated six classes, composing two categories: “Knowledge and practices of riverine mothers about vaccination” and “Importance of health education and the role of health professionals in sharing information about vaccination”.Conclusion: discussing the knowledge of riverside mothers about vaccination and its influence on decision-making allowed a critical reflection on the practices in the daily life of this population, providing health professionals with the opportunity to rethink strategies, especially in educational actions

CONOCIMIENTOS Y PRÁCTICAS DE LAS MADRES RIBEREÑAS EN MATERIA DE VACUNACIÓN

Objetivo: analizar los conocimientos de las madres ribereñas sobre la vacunación y su influencia en la práctica de llevar a sus hijos a vacunar.Método: estudio cualitativo/descriptivo realizado en la Unidad de Salud de la Familia de Combú, Belém-Pará, Brasil, con 30 madres ribereñas que tenían hijos en edad de vacunación. Los datos fueron producidos por entrevistas individuales, cuyo corpus fue analizado con el software Interface de R pour les Analyses Multidimensionnelles de Textes et de Questionnaires 0.7, alpha 2, utilizando la Clasificación Jerárquica Descendente.Resultados: el software generó seis clases, que componían dos categorías: “Conocimientos y prácticas de las madres ribereñas sobre la vacunación” e “Importancia de la educación sanitaria y papel de los profesionales de la salud en el intercambio de información sobre la vacunación”.Conclusión: discutir el conocimiento de las madres ribereñas sobre la vacunación y su influencia en la toma de decisiones nos permitió reflexionar críticamente sobre las prácticas en el día a día de esta población, dando a los profesionales de la salud la oportunidad de repensar estrategias, especialmente en las acciones educativas

SABERES E PRÁTICAS DE MÃES RIBEIRINHAS SOBRE VACINAÇÃO

Objetivo: analisar os saberes de mães ribeirinhas sobre vacinação e sua influência na prática de levar seus filhos para vacinar.Método: estudo qualitativo/descritivo, realizado na Unidade de Saúde da Família Combú, Belém-Pará, Brasil, com 30 mães ribeirinhas que tinham filhos em idade vacinal. Os dados foram produzidos por entrevistas individuais, cujo corpus foi analisado com o software Interface de R pour les Analyses Multidimensionnelles de Textes et de Questionnaires 0.7, alpha 2, utilizando a Classificação Hierárquica Descendente.Resultados: o software gerou seis classes, compondo duas categorias: “Saberes e práticas de mães ribeirinhas sobre vacinação” e “Importância da educação em saúde e o papel dos profissionais de saúde no compartilhamento de informações sobre vacinação”.Conclusão: discutir os saberes de mães ribeirinhas sobre vacinação e sua influência na tomada de decisão permitiu refletir criticamente sobre as práticas no cotidiano dessa população, oportunizando aos profissionais de saúde repensar estratégias, principalmente nas ações educativas.

Robust estimation of bacterial cell count from optical density

Optical density (OD) is widely used to estimate the density of cells in liquid culture, but cannot be compared between instruments without a standardized calibration protocol and is challenging to relate to actual cell count. We address this with an interlaboratory study comparing three simple, low-cost, and highly accessible OD calibration protocols across 244 laboratories, applied to eight strains of constitutive GFP-expressing E. coli. Based on our results, we recommend calibrating OD to estimated cell count using serial dilution of silica microspheres, which produces highly precise calibration (95.5% of residuals <1.2-fold), is easily assessed for quality control, also assesses instrument effective linear range, and can be combined with fluorescence calibration to obtain units of Molecules of Equivalent Fluorescein (MEFL) per cell, allowing direct comparison and data fusion with flow cytometry measurements: in our study, fluorescence per cell measurements showed only a 1.07-fold mean difference between plate reader and flow cytometry data

Finishing the euchromatic sequence of the human genome

The sequence of the human genome encodes the genetic instructions for human physiology, as well as rich information about human evolution. In 2001, the International Human Genome Sequencing Consortium reported a draft sequence of the euchromatic portion of the human genome. Since then, the international collaboration has worked to convert this draft into a genome sequence with high accuracy and nearly complete coverage. Here, we report the result of this finishing process. The current genome sequence (Build 35) contains 2.85 billion nucleotides interrupted by only 341 gaps. It covers ∼99% of the euchromatic genome and is accurate to an error rate of ∼1 event per 100,000 bases. Many of the remaining euchromatic gaps are associated with segmental duplications and will require focused work with new methods. The near-complete sequence, the first for a vertebrate, greatly improves the precision of biological analyses of the human genome including studies of gene number, birth and death. Notably, the human enome seems to encode only 20,000-25,000 protein-coding genes. The genome sequence reported here should serve as a firm foundation for biomedical research in the decades ahead

Anales del III Congreso Internacional de Vivienda y Ciudad "Debate en torno a la nueva agenda urbana"

Acta de congresoEl III Congreso Internacional de Vivienda y Ciudad “Debates en torno a la NUEVa Agenda Urbana”, ha sido una apuesta de alto compromiso por acercar los debates centrales y urgentes que tensionan el pleno ejercicio del derecho a la ciudad. Para ello las instituciones organizadoras (INVIHAB –Instituto de Investigación de Vivienda y Hábitat y MGyDH-Maestría en Gestión y Desarrollo Habitacional-1), hemos convidado un espacio que se concretó con potencia en un debate transdisciplinario. Convocó a intelectuales de prestigio internacional, investigadores, académicos y gestores estatales, y en una metodología de innovación articuló las voces académicas con las de las organizaciones sociales y/o barriales en el Foro de las Organizaciones Sociales que tuvo su espacio propio para dar voz a quienes están trabajando en los desafíos para garantizar los derechos a la vivienda y los bienes urbanos en nuestras ciudades del Siglo XXI

Educomunicação, Transformação Social e Desenvolvimento Sustentável

Esta publicação apresenta os principais trabalhos dos GTs do II Congresso Internacional de Comunicação e Educação nos temas Transformação social, com os artigos que abordam principalmente Educomunicação e/ou Mídia-Educação, no contexto de políticas de diversidade, inclusão e equidade; e, em Desenvolvimento Sustentável os artigos que abordam os avanços da relação comunicação/educação no contexto da educação ambiental e desenvolvimento sustentável

Multiancestry analysis of the HLA locus in Alzheimer’s and Parkinson’s diseases uncovers a shared adaptive immune response mediated by HLA-DRB1*04 subtypes

Across multiancestry groups, we analyzed Human Leukocyte Antigen (HLA) associations in over 176,000 individuals with Parkinson’s disease (PD) and Alzheimer’s disease (AD) versus controls. We demonstrate that the two diseases share the same protective association at the HLA locus. HLA-specific fine-mapping showed that hierarchical protective effects of HLA-DRB1*04 subtypes best accounted for the association, strongest with HLA-DRB1*04:04 and HLA-DRB1*04:07, and intermediary with HLA-DRB1*04:01 and HLA-DRB1*04:03. The same signal was associated with decreased neurofibrillary tangles in postmortem brains and was associated with reduced tau levels in cerebrospinal fluid and to a lower extent with increased Aβ42. Protective HLA-DRB1*04 subtypes strongly bound the aggregation-prone tau PHF6 sequence, however only when acetylated at a lysine (K311), a common posttranslational modification central to tau aggregation. An HLA-DRB1*04-mediated adaptive immune response decreases PD and AD risks, potentially by acting against tau, offering the possibility of therapeutic avenues