First Archaeal rDNA sequences from coastal waters of Argentina: unexpected PCR characterization by using eukaryotic primers

Muchos miembros de Archaea, un grupo de microroganismos descritos hace aproximadamente 30 años, colonizan ambientes extremos. Sin embargo, las investigaciones más recientes han demostrado que las arqueas también son abundantes componentes del plankton marino, siendo algunos grupos de Archaea componentes fundamentales de los ecosistemas marinos debido a su rol clave en los ciclos biogeoquímicos. Aunque la ubiquidad de las arqueas ha sido bien documentada, hasta el momento no hay registros de la presencia de representantes de este grupo en el mar Argentino. En un estudio de biodiversidad orientado a determinar secuencias de picoplancton utilizando cebadores universales para eucariotas, se encontraron secuencias de ADNr de Archaea en muestras recolectadas durante la primavera en una estación fija de monitorización (EPEA) en el mar Argentino. A partir de ADN ambiental y mediante el uso de la metodología de PCR, se obtuvieron dos fragmentos de aproximadamente 1700 y 1460 pb, que fueron separados y visualizados después de electroforesis en geles de agarosa y, luego, purificados, clonados y secuenciados. El análisis de BLAST mostró que las secuencias de tamaño superior correspondían a organismos eucariotas y las secuencias de menor tamaño pertenecían a Archaea. El análisis filogenético mostró que las secuencias de Archaea se agrupan con Euryarchaeota marina grupo II, caracterizado como un linaje metanógeno. Éste es el primer reporte de la presencia de secuencias de Euryarchaeota grupo II en aguas del mar Argentino. El hecho de que las secuencias de Archaea hayan sido amplificadas con cebadores no específicos para este grupo podría sugerir una inesperada abundancia de estos organismos durante los inicios de primavera en el mar Argentino.Many members of Archaea, a group of prokaryotes recognized three decades ago, colonize extreme environments; however, new research has shown that Archaeans are also abundant components of plankton in the open sea, where they play a key role in the biogeochemical cycles. Although the widespread distribution of Archaea in the marine environment is well documented there are no reports on the detection of Archaea in the Southwest Atlantic Ocean. During the search for picophytoplankton sequences using eukaryotic universal primers, we retrieved archaeal rDNA sequences from surface samples collected during the spring at a fixed monitoring station (EPEA) in the Argentine Sea. From environmental DNA and using PCR methodology, two DNA fragments of about 1700 and 1450 bp were visualized after electrophoresis in agarose gels, and separately purified, cloned, and sequenced. BLAST analysis showed that sequences of the highest size corresponded to eukaryotic organisms and, unexpectedly, those of about 1460 bp corresponded to archaeal organisms. Phylogenetic analysis showed that archaeal sequences belong to Euryarchaeota of marine group II, characterized as a methanogenic lineage. This is the first report on the presence of group II Euryarchaeota sequences in environmental water samples of the Argentine Sea. The fact that Archaea sequences were amplified with primers non-specific for this group may suggest an unexpected abundance of these organisms in the early spring in the Argentine Sea.Fil: Covacevich, Fernanda. Fundación para Investigaciones Biológicas Aplicadas. Centro de Estudios de Biodiversidad y Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Silva, R. I.. Instituto Nacional de Investigaciones y Desarrollo Pesquero; ArgentinaFil: Cumino, Andrea Carina. Fundación para Investigaciones Biológicas Aplicadas. Centro de Estudios de Biodiversidad y Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Caló, Gonzalo Federico. Fundación para Investigaciones Biológicas Aplicadas. Centro de Estudios de Biodiversidad y Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Negri, R. M.. Instituto Nacional de Investigaciones y Desarrollo Pesquero; ArgentinaFil: Salerno, Graciela Lidia. Fundación para Investigaciones Biológicas Aplicadas. Centro de Estudios de Biodiversidad y Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Transform Autism Education - Final Report

The Transform Autism Education (TAE) project focused on the domain of ‘good autism practice’ in the education of pupils with autism in the UK, Greece and Italy with the overall objectives to:• Research good autism practice in education.• Create professional development programmes in Greece and Italy.• Enhance the knowledge and practice of school staff.• Facilitate the inclusion of autistic children in primary schools in those countries.Funded by the European Commission through Erasmus Plus Key Action 2, Strategic Partnerships scheme, and led by Principal Investigator Dr. Karen Guldberg, the project involved a range of Greek, Italian and UK partners. It employed the Autism Education Trust (AET) collaborative training schemes in the UK as a founding model. While the requirements of each country were distinct, and so necessitated careful adaptations of the materials to their specific needs, what united all aspects of the project was a desire to improve the educational inclusion of autistic children, as well as their general experiences in school and their outcomes

Transform Autism Education - Final Report

The Transform Autism Education (TAE) project focused on the domain of ‘good autism practice’ in the education of pupils with autism in the UK, Greece and Italy with the overall objectives to: • Research good autism practice in education. • Create professional development programmes in Greece and Italy. • Enhance the knowledge and practice of school staff. • Facilitate the inclusion of autistic children in primary schools in those countries. Funded by the European Commission through Erasmus Plus Key Action 2, Strategic Partnerships scheme, and led by Principal Investigator Dr. Karen Guldberg, the project involved a range of Greek, Italian and UK partners. It employed the Autism Education Trust (AET) collaborative training schemes in the UK as a founding model. While the requirements of each country were distinct, and so necessitated careful adaptations of the materials to their specific needs, what united all aspects of the project was a desire to improve the educational inclusion of autistic children, as well as their general experiences in school and their outcomes

Guidelines for the use and interpretation of assays for monitoring autophagy (4th edition)1.

In 2008, we published the first set of guidelines for standardizing research in autophagy. Since then, this topic has received increasing attention, and many scientists have entered the field. Our knowledge base and relevant new technologies have also been expanding. Thus, it is important to formulate on a regular basis updated guidelines for monitoring autophagy in different organisms. Despite numerous reviews, there continues to be confusion regarding acceptable methods to evaluate autophagy, especially in multicellular eukaryotes. Here, we present a set of guidelines for investigators to select and interpret methods to examine autophagy and related processes, and for reviewers to provide realistic and reasonable critiques of reports that are focused on these processes. These guidelines are not meant to be a dogmatic set of rules, because the appropriateness of any assay largely depends on the question being asked and the system being used. Moreover, no individual assay is perfect for every situation, calling for the use of multiple techniques to properly monitor autophagy in each experimental setting. Finally, several core components of the autophagy machinery have been implicated in distinct autophagic processes (canonical and noncanonical autophagy), implying that genetic approaches to block autophagy should rely on targeting two or more autophagy-related genes that ideally participate in distinct steps of the pathway. Along similar lines, because multiple proteins involved in autophagy also regulate other cellular pathways including apoptosis, not all of them can be used as a specific marker for bona fide autophagic responses. Here, we critically discuss current methods of assessing autophagy and the information they can, or cannot, provide. Our ultimate goal is to encourage intellectual and technical innovation in the field

Transform Autism Education - Final Report

The Transform Autism Education (TAE) project focused on the domain of ‘good autism practice’ in the education of pupils with autism in the UK, Greece and Italy with the overall objectives to:• Research good autism practice in education.• Create professional development programmes in Greece and Italy.• Enhance the knowledge and practice of school staff.• Facilitate the inclusion of autistic children in primary schools in those countries.Funded by the European Commission through Erasmus Plus Key Action 2, Strategic Partnerships scheme, and led by Principal Investigator Dr. Karen Guldberg, the project involved a range of Greek, Italian and UK partners. It employed the Autism Education Trust (AET) collaborative training schemes in the UK as a founding model. While the requirements of each country were distinct, and so necessitated careful adaptations of the materials to their specific needs, what united all aspects of the project was a desire to improve the educational inclusion of autistic children, as well as their general experiences in school and their outcomes

Chemoprophylactic activity of metformin during <i>E</i>. <i>granulosus</i> cyst development.

<p>(A) Box plot showing the comparative distribution of the weight (g) of cysts recovered from untreated (C) and Met-treated (Met, 50 mg/kg/d) mice. A significant cyst weight reduction (**<i>p</i> < 0.01) was achieved in treated animals. (B) Representative SEM (a, b, e, f) and TEM (c, d, g, h) images of hydatid cysts recovered from untreated control mice (a-d) compared with Met-treated mice (e-h). ll, laminated layer; mt, microtriches; dc, distal cytoplasm; gl, germinal layer; nu, nucleus; ly, lysosomes; gly, glycogen storage; a, autophagosomes; al, autophagolysosome; cc, calcareous corpuscles. Bars indicate: 50 μm in (a, e), 10 μm in (b, f) and 1 μm in (c, d, g, h). (C) Number of cysts obtained from untreated and Met-treated mice as indicated in (A).</p