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ANÁLISIS DE LA EXPRESIÓN Y LA REGULACIÓN EPIGENÉTICA DE MOLÉCULAS INFLAMATORIAS, EN PACIENTES CON OBESIDAD Y DIABETES TIPO 2 TRATADOS MEDIANTE CIRUGÍA BARIÁTRICA.
Get PDFFil: Cerrone, Gloria. Instituto Instituto Universitario de Ciencias de la Salud. Fundación Barceló; Argentina.Fil: Frechtel, Gustavo. Instituto Universitario de Ciencias de la Salud. Fundación Barceló; Argentina.El presente proyecto de investigación propone el estudio de los aspectos moleculares que intervienen en la etiopatogenia de enfermedades metabólicas con alto impacto en Salud Pública como la Obesidad y la DM2. La inflamación subclínica sistémica, a partir de monocitos circulantes activados en sangre periférica y macrófagos depositados en diferentes tejidos, cuya activación se ejerce por LPS y AGL sobre el receptor TLR4, es uno de los principales mecanismos que determina el desarrollo de DM2 y obesidad. La activación de los receptores de tipo Toll 4 (TLR4), presentes en monocitos circulantes inician la respuesta inflamatoria y determinarían el aumento de la expresión de IL-1β. Dicha interleuquina es la citoquina inflamatoria que ha demostrado mayor acción en el deterioro de los mecanismos fisiopatológicos más frecuentes como son la resistencia a la insulina y la disfunción de la célula ß, en la progresión a DM2. Además, la disminución de la inflamación de bajo grado dependería de modificaciones epigenéticas y del tamaño del telómero, inducidas por la intervención quirúrgica de individuos DM2 y obesos. Se evaluaron los niveles de ARNm de leucocitos mononucleares y serológicos de Interleuquina 1-beta (IL-1β), y el genotipo rs16944 (-511C/T) en el promotor del gen IL-1β, en relación con la normalización hiperglucémica en pacientes con diabetes tipo 2 (DM2). Estudiamos 30 individuos recientemente diagnosticados de DM2 con hiperglucemia en el tiempo basal y después de 6 y 12 meses del tratamiento de normalización. En el tiempo basal, la presencia del alelo polimórfico T del rs16944 se asoció con una expresión de ARNm de IL-1β más baja (p = 0,006); y un mayor nivel de glucosa fue correlacionado positivamente con los niveles de proteína IL-1β (p = 0.015). Después del tratamiento, los individuos mostraron una disminución significativa en el nivel de glucosa (p = 0.003), pero no expresaron cambios significativos en los niveles séricos de IL-1β. Sorprendentemente, observamos que las mayores disminuciones en el nivel de glucosa se asociaron con un aumento de los niveles séricos de IL-1β (p = 0.040). Este es el primer estudio de seguimiento que evalúa la expresión de ARNm de IL-1β y los niveles séricos en individuos con DM2 hiperglucémica y luego del tratamiento de normalización glucémica. Los resultados actuales contribuyen al conocimiento de la relación entre la inflamación y el metabolismo de la glucosa en la DM2. Por otra parte, se observó el impacto del estado de inflamación sobre la longitud de los telómeros. EL mayor aumento del tamaño de los telómeros se asoció a mayores descensos de los valores de PCR-us. El tratamiento quirúrgico de la obesidad mórbida ya sea a través de la manga gástrica o del BGYR, no solo redundaría en beneficios a nivel del estado metabólico, sino que también revierte el acortamiento telomérico al menos a corto plazo
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Polycystic ovary syndrome in Latin American populations: What is known and what remains unresolved
No full textPolycystic ovary syndrome (PCOS) is one of the main endocrine and reproductive disorders affecting women in their reproductive age. The syndrome is considered a multifactorial pathology. Therefore, genetic susceptibility and environmental factors contribute to PCOS development and phenotypic manifestation. Ethnicity and socioeconomic factors influence the development of PCOS and could affect the possibility of its diagnosis. Latin America is a unique case of study because of the heterogeneity within the region, complex socioeconomic status, and the mixed ancestry found in these populations. Up-to-date, most studies have focused on developed countries´ populations, and there is a lack of evidence regarding Latin-American countries. We propose to review the state of the art of PCOS knowledge regarding Latin American populations, including the metabolic and reproductive aspects of the syndrome and the different influencing factors, and suggest future directions to deepen the study of PCOS.Fil: Abruzzese, Giselle Adriana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Estudios Farmacológicos y Botánicos. Universidad de Buenos Aires. Facultad de Medicina. Centro de Estudios Farmacológicos y Botánicos; ArgentinaFil: Velazquez, Mariela Edith. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Estudios Farmacológicos y Botánicos. Universidad de Buenos Aires. Facultad de Medicina. Centro de Estudios Farmacológicos y Botánicos; ArgentinaFil: Cerrone, Gloria Edith. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Inmunología, Genética y Metabolismo. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Inmunología, Genética y Metabolismo; ArgentinaFil: Motta, Alicia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Centro de Estudios Farmacológicos y Botánicos. Universidad de Buenos Aires. Facultad de Medicina. Centro de Estudios Farmacológicos y Botánicos; Argentin
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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