Práctica de valores y su relación con la convivencia escolar en los estudiantes del nivel secundario de la Institución Educativa “Hermógenes Arenas Yáñez”, Tacna - 2015

El presente trabajo de investigación titulado Práctica de Valores y su relación con la Convivencia Escolar en los estudiantes del nivel secundario de la I. E. “Hermógenes Arenas Yáñez”, Tacna - 2015, siendo una investigación de tipo no experimental, con un diseño correlacional, habiéndose trabajado con una muestra de 162 estudiantes del nivel secundario de la I. E. “Hermógenes Arenas Yáñez”.se trabajó con dos instrumentos de elaboración propia y tiene un alto grado de confiabilidad, para el instrumento de práctica de valores cuenta con 0,902 y para el instrumento de convivencia escolar tiene 0,934, como también se llegó a las siguientes conclusiones: a) De los 162 estudiantes encuestados el 8.6 % responden que siempre, 56.8 % responden que frecuentemente, el 32.1 % responden que algunas veces y el 2.5 % responden que nunca y b) De los 162 estudiantes encuestados, responden que siempre es el 8.0 %, 34.6 % responden que frecuentemente, 54.3 % responden que algunas veces y el 3.1. % responden que nunca y c) Para un nivel de confianza del 95%, existe una relación significativa entre Práctica de Valores con la Variable Convivencia Escolar en los estudiantes del Nivel Secundario de la Institución Educativa “Hermógenes Arenas Yáñez”, Tacna – 2015

Connect the dots: sketching out microbiome interactions through networking approaches

Microbiome networking analysis has emerged as a powerful tool for studying the complex interactions among microorganisms in various ecological niches, including the human body and several environments. This analysis has been used extensively in both human and environmental studies, revealing key taxa and functional units peculiar to the ecosystem considered. In particular, it has been mainly used to investigate the effects of environmental stressors, such as pollution, climate change or therapies, on host-associated microbial communities and ecosystem function. In this review, we discuss the latest advances in microbiome networking analysis, including methods for constructing and analyzing microbiome networks, and provide a case study on how to use these tools. These analyses typically involve constructing a network that represents interactions among microbial taxa or functional units, such as genes or metabolic pathways. Such networks can be based on a variety of data sources, including 16S rRNA sequencing, metagenomic sequencing, and metabolomics data. Once constructed, these networks can be analyzed to identify key nodes or modules important for the stability and function of the microbiome. By providing insights into essential ecological features of microbial communities, microbiome networking analysis has the potential to transform our understanding of the microbial world and its impact on human health and the environment

Exploring clade differentiation of the Faecalibacterium prausnitzii complex

Faecalibacterium prausnitzii is one of the most prevalent and abundant polyphyletic health18 promoting components of the human gut microbiome with a propensity for dysbiotic decreases. To better understand its biology in the human gut, we specifically explored the divergence pressures acting on F. prausnitzii clades on a global scale. Five F. prausnitzii clades were de novo identified from 55 publicly available genomes and 92 high-quality metagenome assembled genomes. Divergence rate indices were constructed and validated to compare the divergence rates among the different clades and between each of the diverging genes. For each clade we identified specific patterns of diverging functionalities, probably reflecting different ecological propensities, in term of inter-host dispersion capacity or exploitation of different substrates in the gut environment. Finally, we speculate that these differences may explain, at least in part, the observed differences in the overall divergence rates of F. prausnitzii clades in human populations

Testicular expression of the TGF-B1 system and the control of Leydig cell proliferation

Transforming growth factor beta 1 (TGF-beta1) is a key regulator that modulates male reproductive function. Testicular TGF-beta1 modulates the steroidogenesis of Leydig cells, the organization of peritubular myoid cells, testis development and spermatogenesis. Several studies have indicated that TGF-beta1 is involved in the tight balance between proliferative and apoptotic re- sponses in the Leydig cells. In the present review, we summarize the direct effects of this cytokine in Ley- dig cells under normal and pathological conditions. We analyze the effect of TGF-beta1 in Leydig cells de- pending on the type of receptors involved in the sig- naling pathway of TGF-beta1. Our group has been ana- lyzing the canonical and non canonical intracellular signaling pathways of TGF-beta1 that are involved in the expression of proliferative and apoptotic markers in Leydig cells. On the basis of our studies and from those of other authors we conclude that the balance between the expression of TGF-beta1 receptors and co receptors is of relevance in Leydig cell physiology and pathophisiology.Fil: Gonzalez, Candela Rocio. Universidad Maimonides. Area de Invest.biomedicas y Biotecnologicas; ArgentinaFil: Calandra, Ricardo Saul. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); ArgentinaFil: Gonzalez Calvar, Silvia Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental (i); Argentina. Universidad de Buenos Aires. Facultad de Medicina; Argentin

Microbiota-gut-brain axis and ketogenic diet: how close are we to tackling epilepsy?

The microbiota-gut-brain axis refers to the intricate bidirectional communication between commensal microorganisms residing in the digestive tract and the central nervous system, along neuroendocrine, metabolic, immune, and inflammatory pathways. This axis has been suggested to play a role in several neurological disorders, such as Parkinson’s disease, Alzheimer’s disease, multiple sclerosis, and epilepsy, paving the way for microbiomebased intervention strategies for the mitigation and treatment of symptoms. Epilepsy is a multifaceted neurological condition affecting more than 50 million individuals worldwide, 30% of whom do not respond to conventional pharmacological therapies. Among the first-hand microbiota modulation strategies, nutritional interventions represent an easily applicable option in both clinical and home settings. In this narrative review, we summarize the mechanisms underlying the microbiota-gut-brain axis involvement in epilepsy, discuss the impact of antiepileptic drugs on the gut microbiome, and then the impact of a particular dietary pattern, the ketogenic diet, on the microbiota-gut-brain axis in epileptic patients. The investigation of the microbiota response to nonpharmacological therapies is an ever-expanding field with the potential to allow the design of increasingly accessible and successful intervention strategies

La formació permanent del professorat d'educació infantil: elements de reflexió

Las características específicas del colectivo de profesionales de la etapa de Educación infantil proyectan una dinámica muy activa que genera nuevas metodologías, estrategias y recursos para una intervención educativa de calidad, en una etapa de vital importancia para el correcto desarrollo infantil. Estas características han de tenerse en cuenta en la formación de formadores del profesorado de esta etapa educativa, para favorecer su desarrollo profesional. Son necesarios proyectos de formación alternativos que conecten los «ámbitos de educación» a partir de propuestas integradas: escuela, familia, instituciones locales y asociaciones. Conjuntamente han de elaborar modelos desinteresados y democráticos, capaces de canalizar la interacción y la reciprocidad entre la cultura de la escuela y la cultura externa a ella. _____________________________________________________________________________________________________________________________________________________________________________ Les caractéristiques spécifiques des professionnels de l’école maternelle sont responsables d’une dynamique très active qui est elle-même à l’origine de méthodologies, de stratégies ainsi que de ressources nouvelles pour une intervention éducative de qualité, au cours d’une étape qui est d’une importance vitale pour un bon développement de l’enfant. Ces caractéristiques doivent être prises en compte dans la formation des formateurs des enseignants de cette étape éducative, afin de mieux participer à leur évolution professionnelle. Des projets de formation alternatifs sont nécessaires pour mettre en rapport les différents «domaines de l’éducation» à partir de propositions intégrées: école, famille, institutions locales et associations. Parallèlement, il est nécessaire d’élaborer des modèles, à la fois désintéressés et démocratiques, qui soient capables de canaliser l’interaction ainsi que la réciprocité entre la culture de l’école et la culture extérieure.Las características específicas del colectivo de profesionales de la etapa de Educación infantil proyectan una dinámica muy activa que genera nuevas metodologías, estrategias y recursos para una intervención educativa de calidad, en una etapa de vital importancia para el correcto desarrollo infantil. Estas características han de tenerse en cuenta en la formación de formadores del profesorado de esta etapa educativa, para favorecer su desarrollo profesional. Son necesarios proyectos de formación alternativos que conecten los «ámbitos de educación» a partir de propuestas integradas: escuela, familia, instituciones locales y asociaciones. Conjuntamente han de elaborar modelos desinteresados y democráticos, capaces de canalizar la interacción y la reciprocidad entre la cultura de la escuela y la cultura externa a ella.The specific qualities observed in child education professionals on the whole are typified by a very active dynamic that generates new methodologies, strategies, and resources for a quality educational operation, at a stage that is vitally important for correct child development. These qualities have to be borne in mind when training the trainers of the teaching staff for this educational stage, in order to enhance their professional development. What are needed are projects of alternative education that connect up the “fields of education” in terms of the following: school, family, local institutions and associations. Together they have to evolve disinterested and democratic models, capable of channelling the interaction and reciprocity between the culture of school and the culture outside it

Inmunolocalización del sistema TGFB1 en fibrosis de la glándula submandibular bajo periodontitis experimental en ratas

La saliva es la primera barrera para la entrada de bacterias y virus en el cuerpo. Las glándulas submandibulares (GSM) contribuyen al mantenimiento de la salud oral y a la regulación de las respuestas inmunoinflamatorias. Estudios previos sugieren que el factor de crecimiento transformante beta 1 (TGFB1) puede contribuir a la fibrosis de las glándulas salivales, pero la expresión y localización del sistema TGFB1 en las GSM no ha sido dilucidada. El objetivo del presente trabajo fue analizar por inmunohistoquímica en las GSM de ratas la expresión de TGFB1 y sus receptores específicos ALK5 (profibrótico) y ALK1 (proproliferativo) y el coreceptor endoglina (EDG) en un modelo de periodontitis bilateral experimental (PE) (hilo de algodón alrededor del cuello de los primeros molares inferiores) durante 1 y 6 semanas. Las GSM fueron fijadas y embebidas en parafina para realizar cortes seriados los cuales se tiñeron con hematoxilinaeosina para analizar la histología o se procesaron para realizar la técnica de inmunohistoquímica mediante detección con diaminobenzidine. La histología de las GSM de animales con PE reveló cambios estructurales tiempo dependientes, con una marcada reducción de la altura de los conductos, destrucción celular, pérdida de gránulos secretores, congestión periductal y exceso de tejido conectivo que rodea los conductos, indicando un proceso de fibrosis respecto de las GSM de animales control. TGFB1, ALK5 y ALK1 y el coreceptor EDG fueron principalmente inmunolocalizados en las células que forman los ductos y en las áreas de fibrosis en los grupos con PE. La expresión del receptor profibrótico ALK5 se incrementó en las áreas de fibrosis en GSM de animales con PE. En GSM de ratas con PE, la localización de los receptores específicos de TGFB1 en las células de los conductos y áreas de fibrosis, junto con la expresión de TGFB1 en las áreas circundantes, podría indicar acciones paracrinas y autocrinas ejercidas por TGFB1 a través de sus receptores específicos. Los resultados de este estudio sugieren que TGFB1 podría inducir un proceso de fibrosis promoviendo la proliferación celular a través de los receptores ALK1 y EDG, y favoreciendo procesos relacionados con la fibrosis a través de su receptor ALK5, lo que conduciría a una actividad secretora anormal de la GSM durante la enfermedad periodontal.Saliva is the first barrier to entry of bacteria and viruses into the body. The submandibular glands (SMG) contribute to the maintenance of oral health and regulation of immune/ inflam matory responses. Previous studies suggest that transforming growth factor beta 1 (TGFB1) may contribute to salivary gland fibrosis but the expression of the TGFB1 system in the SMG has not been elucidated. Thus, the aim of this study was to analyze in rat SMG the immunolocalization of TGFB1 and its specific receptors ALK5 (profibrotic) and ALK1 (proproliferative) and the coreceptor endoglin (EDG) in a bilateral experimental periodontitis (EP) model (cotton thread ligature around the neck of the first lower molars) for 1 and 6 weeks. Fixed SMG were embedded in paraffin and serially cut for routine hematoxylin–eosin staining for histological analysis or immunohistochemical techniques by diaminobenzidine detection. SMG histology from animals with EP showed timedependent structural changes involving marked reduction in the height of the contoured ducts, cell destruction, loss of secretory granules, periductal congestion and excess connective tissue surrounding these ducts indicative of a fibrotic process, compared to control SMG. TGFB1, ALK5 and ALK1 receptors and the coreceptor EDG were mainly immunolocalized in ductal cells and in the fibrotic areas in EP groups. The expression of the profibrotic ALK5 receptor was increased in areas of fibrosis in SMG of animals with EP. In SMG of rats with EP, the localization of the TGFB1 specific receptors in the ducts and cells from fibrotic areas, due to the expression of TGFB1 in the surrounding areas, might indicate paracrine and autocrine actions exerted by TGFB1 via its specific receptors. The results of this study suggest that TGFB1 promotes fibrosis, inducing cell proliferation via ALK1 and EDG receptors and stimulates fibrosis relatedprocesses via ALK5 receptor, which could lead to abnormal secretor activity of the SMG during periodontal disease.Fil: Gonzalez, Candela Rocio. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico. Departamento de Estudios Biomédicos y Biotecnológicos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Amer, Mariano. Universidad de Buenos Aires. Facultad de Odontología; ArgentinaFil: Vitullo, Alfredo Daniel. Universidad Maimónides. Área de Investigaciones Biomédicas y Biotecnológicas. Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y de Diagnóstico. Departamento de Estudios Biomédicos y Biotecnológicos; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Gonzalez Calvar, Silvia I.. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Biología y Medicina Experimental. Fundación de Instituto de Biología y Medicina Experimental. Instituto de Biología y Medicina Experimental; ArgentinaFil: Vacas, María I.. Hospital Italiano. Instituto Universitario - Escuela de Medicina; Argentin

Open access monographs published by university presses in Spain

The open access model for publishing monographs by the members of the Spanish Universities Publishers Association (UNE) is analyzed. The study focused on production data from 2015-2017, as well as the positioning and arguments of the editors in relation to the open access movement, publication, related policies, and financing modalities. Data was collected by a questionnaire (with a response rate of 58% of the publishers associated with UNE) and includes in-depth interviews with seven of them. The results show that 75% of UNE members publish titles in open access, most consider open access a good way to increase the dissemination of monographs, and that there are no differences in content quality with non-open access works. Publishers do not see that publishing in open access is compatible with the commercial exploitation of printed copies. Publishers consider the most effective financing channels to be institutional payment (i.e., the university), followed by publisher’s self-financing, and payment by the author

Tissue-scale microbiota of the Mediterranean mussel (Mytilus galloprovincialis) and its relationship with the environment

Abstract In this study, we characterize the structural variation of the microbiota of Mytilus galloprovincialis at the tissue scale, also exploring the connection with the microbial ecosystem of the surrounding water. Mussels were sampled within a farm located in the North-Western Adriatic Sea and microbiota composition was analyzed in gills, hemolymph, digestive glands, stomach and foot by Next Generation Sequencing marker gene approach. Mussels showed a distinctive microbiota structure, with specific declinations at the tissue level. Indeed, each tissue is characterized by a distinct pattern of dominant families, reflecting a peculiar adaptation to the respective tissue niche. For instance, the microbiota of the digestive gland is characterized by Ruminococcaceae and Lachnospiraceae, being shaped to ferment complex polysaccharides of dietary origin into short-chain fatty acids, well matching the general asset of the animal gut microbiota. Conversely, the gill and hemolymph ecosystems are dominated by marine microorganisms with aerobic oxidative metabolism, consistent with the role played by these tissues as an interface with the external environment. Our findings highlight the putative importance of mussel microbiota for different aspects of host physiology, with ultimate repercussions on mussel health and productivity