Mg II chromospheric emission line bisectors of HD39801 and its relation with the activity cycle

Betelgeuse is a cool star of spectral type M and luminosity class I. In the present work, the activity cycle of Betelgeuse was obtained from the integrated emission flux of the Mg II H and K lines, using more than 250 spectra taken from the International Ultraviolet Explorer (IUE) online database. Of which it was found, based on a Lomb Scargle periodogram, a cycle of 16 years, along with 2 sub-cycles with a period of the order of 0.60 and 0.65 years, which may be due to turbulence or possible stellar flares. In addition, an analysis of line asymmetry was made by means of the chromospheric emission line bisectors, due to the strong self-absorption observed in this lines, the blue and red wings were analyzed independently. In order to measure such asymmetry, a “line shift” was calculated, from which several cycles of variability were obtained from a Lomb Scargle periodogram, spanning from few months to 4 years. In the sense, the most significant cycle is about 0.44 and 0.33 years in the blue and red wing respectively. It is worth noting, that the rotation period of the star doesn’t play an important role in the variability of the Mg II lines. This technique provides us with a new way to study activity cycles of evolved stars

Presentación de las actividades que lleva a cabo el grupo ORIÓN de investigación del área de óptica de la Universidad de Extremadura

Per ser conseqüents amb la nostra línia de treball d'innovació en l’ensenyament de la física i amb la línia editorial d'aquesta revista, aquest article sobre els treballs d'innovació i investigació educativa del nostre grup Orión d’investigació, es presenta en forma de mapa conceptual. La millor manera de llegir-lo és, si es té instal·lat el CmapTools a l'ordinador, visitar el lloc Cmap Universitat d'Extremadura (Espanya) i entrar a la carpeta Investigaciones del Grupo Orión. Encara que d'una forma una mica més limitada (no es podran obrir els Post-its aclaridors que hi apareixen), també pot llegir-se anant a l'adreça web: <http://grupoorion.unex.es:8001> i entrant a la carpeta indicada. Per qualsevol d'aquests dos procediments s'arriba al mapa conceptual que apareix més endavant i que resumeix les activitats del nostre grup. En aquest mapa apareixen multitud de vincles que porten als resultats dels diferents treballs duts a terme.Para resultar consecuentes con nuestra línea de trabajo de Innovación en la Enseñanza de la Física y con la línea editorial de esta revista, este artículo sobre los trabajos de Innovación e Investigación Educativa de nuestro Grupo Orión de Investigación, se presenta en forma de Mapa Conceptual. La mejor forma de leerlo es, si se tiene instalado CmapTools en el ordenador, visitar el Sitio Cmap “Universidad de Extremadura (España)” y entrar en la carpeta “Investigaciones del Grupo Orión”. Aunque de una forma algo más limitada (no se podrán abrir los post-it aclaratorios que aparecen), también puede leerse yendo a la dirección Web: http://grupoorion.unex.es:8001 y entrando en la carpeta antes indicada. Por cualquiera de estos 2 procedimientos se llega al mapa conceptual que aparece más adelante y que resume las actividades de nuestro grupo. En dicho mapa aparecen multitud de vínculos que llevan a los resultados de los diferentes trabajos llevados a cabo

Short-term exposure to carbamazepine causes oxidative stress on common carp (Cyprinus carpio)

Artículo científico en revista indizadaThe aim of this research was to determine the bioconcentration factor and if subacute exposure to carbama- zepine (2 mg L−1) modifies the oxidative state of liver, gills and brain of Cyprinus carpio. This was measured through the following biomarkers: hydroperoxide and protein carbonyl content, lipid peroxidation degree, as well as superoxide dismutase, catalase and glutathione peroxidase activity. Carbamazepine concentration in carp’s tissue was also determined by liquid chromatography with a diode arrangement detector. An increase in lipid peroxidation degree, hydroperoxide and protein carbonyl content, and a decrease in the activity of the antioxidant enzymes (P < 0.05) with respect to control was observed. Also, there is an increase in the con- centration of carbamazepina present in the organs with respect to the water in the system, which denotes bioconcentration of the drug. In conclusion, carbamazepine is bioconcentrated and produces oxidative stress on the common carp (C. carpio).Secretaría de Investigación y Posgrado del Instituto Politécnico Nacional (SIP-IPN 20170919)

Targeting PDE10A GAF Domain with Small Molecules: A Way for Allosteric Modulation with Anti-Inflammatory Effects

Phosphodiesterase (PDE) enzymes regulate the levels of cyclic nucleotides, cAMP, and/or cGMP, being attractive therapeutic targets. In order to modulate PDE activity in a selective way, we focused our efforts on the search of allosteric modulators. Based on the crystal structure of the PDE10A GAF-B domain, a virtual screening study allowed the discovery of new hits that were also tested experimentally, showing inhibitory activities in the micromolar range. Moreover, these new PDE10A inhibitors were able to decrease the nitrite production in LPS-stimulated cells, thus demonstrating their potential as anti-inflammatory agentsFinancial support from MINECO and FEDER founds (UE program) (project SAF2012-33600) is acknowledged. A.M.G. acknowledges pre-doctoral grants to the CSIC (JAEPre program)S

Mixed-method research protocol: Development and evaluation of a nursing intervention in patients discharged from the intensive care unit

Alta de la UCI; Diseño de un método mixto; Intervención de enfermeríaAlta de la UCI; Disseny d'un mètode mixt; Intervenció d'infermeriaICU discharge; Mixed-method design; Nursing interventionAim (a) To understand patients’ lived experience at intensive care unit (ICU) discharge and (b) to evaluate the impact of a nursing empowerment intervention (NEI) on patients’ anxiety and depression levels at ICU discharge. Design A mixed-methods approach will be applied. Methods In the qualitative phase, the hermeneutic phenomenological method will be used. Participants will be patients from three university hospitals who will be selected by purposive sampling. Data will be gathered through in-depth interviews and analysed using content analysis. The qualitative data obtained will be employed to develop the nursing intervention. Subsequently, a multicenter, parallel-group, experimental pre-test/post-test design with a control group will be used to measure the effectiveness of the nursing empowerment intervention in the quantitative phase by means of the Hospital Anxiety and Depression Scale (HADS). Simple random probabilistic sampling will include 172 patients in this phase

La programación en grupos de trabajo

De todos es conocida la importancia que tiene el desarrollar aplicaciones dentro de un grupo de trabajo, y lo difícil que puede resultar. Aquí trataremos sobre tres tipos de organización seguida en las prácticas de Ingenieria del Software II en diferentes años, para permitir que el alumno tome conciencia de esta problemática y sepa afrontar con éxito el futuro. Para cada una de ellas expondremos los aspectos positivos y negativos así como las herramientas utilizadas para su realización

Endotoxin increase after fat overload is related to postprandial hypertriglyceridemia in morbidly obese patients.

The low-grade inflammation observed in obesity has been associated with a high-fat diet, though this relation is not fully understood. Bacterial endotoxin, produced by gut microbiota, may be the linking factor. However, this has not been confirmed in obese patients. To study the relationship between a high-fat diet and bacterial endotoxin, we analyzed postprandial endotoxemia in morbidly obese patients after a fat overload. The endotoxin levels were determined in serum and the chylomicron fraction at baseline and 3 h after a fat overload in 40 morbidly obese patients and their levels related with the degree of insulin resistance and postprandial hypertriglyceridemia. The morbidly obese patients with the highest postprandial hypertriglyceridemia showed a significant increase in lipopolysaccharide (LPS) levels in serum and the chylomicron fraction after the fat overload. Postprandial chylomicron LPS levels correlated positively with the difference between postprandial triglycerides and baseline triglycerides. There were no significant correlations between C-reactive protein (CRP) and LPS levels. The main variables contributing to serum LPS levels after fat overload were baseline and postprandial triglyceride levels but not glucose or insulin resistance. Additionally, superoxide dismutase activity decreased significantly after the fat overload. Postprandial LPS increase after a fat overload is related to postprandial hypertriglyceridemia but not to degree of insulin resistance in morbidly obese patients

Immunohistochemical field parcellation of the human hippocampus along its antero-posterior axis

The primate hippocampus includes the dentate gyrus, cornu ammonis (CA), and subiculum. CA is subdivided into four felds (CA1-CA3, plus CA3h/hilus of the dentate gyrus) with specifc pyramidal cell morphology and connections. Work in non-human mammals has shown that hippocampal connectivity is precisely patterned both in the laminar and longitudinal axes. One of the main handicaps in the study of neuropathological semiology in the human hippocampus is the lack of clear laminar and longitudinal borders. The aim of this study was to explore a histochemical segmentation of the adult human hippocampus, integrating feld (medio-lateral), laminar, and anteroposterior longitudinal patterning. We provide criteria for head-body-tail feld and subfeld parcellation of the human hippocampus based on immunodetection of Rabphilin3a (Rph3a), Purkinje-cell protein 4 (PCP4), Chromogranin A and Regulation of G protein signaling-14 (RGS-14). Notably, Rph3a and PCP4 allow to identify the border between CA3 and CA2, while Chromogranin A and RGS-14 give specifc staining of CA2. We also provide novel histological data about the composition of human-specifc regions of the anterior and posterior hippocampus. The data are given with stereotaxic coordinates along the longitudinal axis. This study provides novel insights for a detailed region-specifc parcellation of the human hippocampus useful for human brain imaging and neuropathologyOpen Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. EG-A, IP-S and CC were the recipients of grants from the Chair in Neuroscience UAM-Fundación Tatiana Pérez de Guzmán el Bueno (Spain), and from thePlan Propio de Investigaciónof the University of La Laguna. LMP was the recipient of grant PID2021-124829NB-I00 from the Ministry of Science and Innovation of Spai

Fasciola hepatica induces eosinophil apoptosis in the migratory and biliary stages of infection in sheep

The aim of the present work was to evaluate the number of apoptotic eosinophils in the livers of sheep experimentally infected with Fasciola hepatica during the migratory and biliary stages of infection. Four groups (n = 5) of sheep were used; groups 1–3 were orally infected with 200 metacercariae (mc) and sacrificed at 8 and 28 days post-infection (dpi), and 17 weeks post-infection (wpi), respectively. Group 4 was used as an uninfected control. Apoptosis was detected using immunohistochemistry with a polyclonal antibody against anti-active caspase-3, and transmission electron microscopy (TEM). Eosinophils were identified using the Hansel stain in serial sections for caspase-3, and by ultrastructural features using TEM. At 8 and 28 dpi, numerous caspase-3+ eosinophils were mainly found at the periphery of acute hepatic necrotic foci. The percentage of caspase -3+ apoptotic eosinophils in the periphery of necrotic foci was high (46.1–53.9) at 8 and 28 dpi, respectively, and decreased in granulomas found at 28 dpi (6%). Transmission electron microscopy confirmed the presence of apoptotic eosinophils in hepatic lesions at 8 and 28 dpi. At 17 wpi, apoptotic eosinophils were detected in the infiltrate surrounding some enlarged bile ducts containing adult flukes. This is the first report of apoptosis induced by F. hepatica in sheep and the first study reporting apoptosis in eosinophils in hepatic inflammatory infiltrates in vivo. The high number of apoptotic eosinophils in acute necrotic tracts during the migratory and biliary stages of infection suggests that eosinophil apoptosis may play a role in F. hepatica survival during different stages of infection.This work was supported by EU grants (FPVII-265862-PARAVAC, H2020-635408-PARAGONE) and the Spanish Ministry of Science grant AGL2009-08726. TEM studies were carried out by the Central Services for Research of the University of Córdoba (SCAI)Veterinari