Search

Interspecific brood or nest parasitism is a relatively common breeding behavior in birds. Through this reproductive tactic, brood-parasites avoid the costs associated with raising and maintaining chicks by laying their eggs in the nests of the host species in which they are specialized. The common cuckoo (Cuculus canorus) follows this brood parasite strategy. Female cuckoos lay their eggs in the nests of other bird species, mimicking egg shape, size, and color of the host species. In this paper we report the first documented case of parasitism of tawny pipit nests by the common cuckoo in Spanish steppe habitats, where no record of parasitism on this species has been reported to date.

As a diachronic corpus-based investigation into onomasiological variation, this study has two main objectives. First, the paper analyses the evolution of the concept of sweet-smelling as a whole – that is, as instantiated by the three near-synonymous adjectives, fragrant, perfumed and scented, with a focus on language-external pressures for distributional changes. There seems to exist variation over time in the nouns that the concept typically collocates with, going from nouns referring to entities with a natural, pleasant smell to entities with an artificial agreeable aroma. It is here argued that this change is motivated by the social and technological transformations experienced by American society after the First and Second Industrial Revolutions, a claim that finds preliminary empirical support in the distribution from 1820 to 2009 of a series of lexical indicators from the semantic domains of cleaning, cosmetics and textile & clothing. Second, the distribution over time of the three adjectives is examined. The data point to a reorganisation concerning the internal semantic structure of the synonym set, with scented gaining ground at the expense of fragrant and perfumed in several contexts of use. Furthermore, the adjectives exhibit highly idiosyncratic collocational preferences, which go a long way towards explaining the alternation between them.

The COVID-19 pandemic forced changes to undergraduate medical education with its impact still not fully understood. This is the first US study to assess the pandemic's perceived impact on medical education after return to in-person clerkships.We conducted a survey of third-year medical students completing their medicine clerkship during the 2020-2021 and 2021-2022 academic years (AY). Survey questions assessed students' attitudes on perceived risk of COVID-19 infection, impact on clinical encounters, and students' specialty interests.Of 312 students enrolled, 283 (90.71%) completed the survey. Concern for COVID-19 infection was highest in the second rotation (3.98 [95% CI 3.64, 4.31]) of the 2020-2021 AY and the third rotation of the 2021-2022 AY (3.41 [95% CI 3.06, 3.76]), corresponding to the surges of COVID-19 cases and subsequent variants. Conversely, as incidence increased, students reported a greater perceived impact on histories, physicals, and time spent with patients with no differences in patient rapport or specialty interests.Although concern for infection was initially high, it decreased after the introduction of the COVID-19 vaccine despite increasing incidence nationally and then peaked again during the Omicron surge. The degree of concern did not exceed initial levels, despite unprecedentedly high disease prevalence. Higher infection rates correlated with greater perceived impact on clinical experiences. Our study underscores the importance of vaccination, highlights learners' concerns and resilience throughout the pandemic, and should be considered in balancing student exposure with maintaining clinical opportunities.The online version contains supplementary material available at 10.1007/s40670-022-01589-8.

Trophic niche partitioning is a mechanism that facilitates the coexistence of ecologically similar species by sharing their resource use. However, detailed information of the trophic niche in insectivorous birds is usually limited by the lack of accurate identification of consumed food resources. The use of DNA metabarcoding has proved useful for molecular identification of the taxa present in bird faecal samples. Here, we used this molecular technique to study the diets of six steppe passerine species distributed in two Special Protection Areas in central Spain, and to characterize the dietary niche overlap and the prey composition differences between bird species. In total, we distinguished 112 diet items, covering 39 arthropod families of 13 orders. Although significant dietary differences existed in prey species composition, our results indicated a 74% overlap in steppe bird dietary niche, mostly due to high consumption of abundant arthropod prey such as beetles, grasshoppers and spiders in the breeding season by all bird species. The lowest overlap was found for the dietary niches of the Greater Short-toed Lark Calandrella brachydactyla and Dupont's Lark Chersophilus duponti, a scarce and threatened species, which appeared to be the species with the most distinct dietary niche within the community. Our results make a significant contribution to the knowledge of shrub-steppe bird diets and their trophic interactions, indicating that some extent of interspecific resource partitioning occurs in the study area, notably between Dupont's Lark and the Greater Short-toed Lark. Our study demonstrates the value of DNA metabarcoding in the assessment of passerine diets and provides useful ecological results for the design of biodiversity conservation programmes in the increasingly scarce and threatened steppe habitats, This study was supported by the European Commission LIFE Ricot ı (LIFE15-NAT-ES-000802) and LIFE Connect Ricot ı (LIFE20-NAT-ES-000133) projects, and the BBVA Foundation Dron Ricot ı project. This is a contribution to the Excellence Network Remedinal 3CM (S2013/MAE2719). Lu ıs P. da Silva and Vanessa A. Mata were funded by Fundac ~ao para a Ci^encia e Tecnologia (FCT) through the research contract CEECIND/02064/ 2017 and 2020.02547.CEECIND, respectively

Spatial co-occurrence patterns are determined by environmental factors, such as food availability or habitat characteristics and by biotic associations. When resources are limited, competition which implies a dominant hierarchy can shape species assemblage. Here, we study space and time co-occurrence of steppe passerines during the breeding season in a natural steppe habitat, its modulation by environmental filtering, potential biotic interactions and random processes. We applied the joint species distribution model of hierarchical modelling of species community (HMSC) to data on species presence–absence and environmental, temporal and spatial covariates acquired from seven plots in a natural steppe in central Spain during two consecutive years. Our results reveal the patterns of bird species co-occurrence and suggest that this assemblage might be competitively structured. The assemblage appears to be configured around one dominant species, the Eurasian skylark, which establishes principally negative associations with many of the coexistent species. Our results contribute to the understanding of how competition and dominance processes, together with ecological constraints and other biotic associations, shape bird assemblages, Academy of Finland - 309581. European Commission - LIFE Connect Ricotí project LIFE20-NAT/ES/000133, LIFE Ricotí project LIFE15-NAT-ES-000802. European Commission - Horizon 2020 Framework Programme, H2020 Excellent Science, H2020 European Research Council, 856506. Jane ja Aatos Erkon Säätiö - Research Council of Norway through its Centres. Remedinal REMEDINAL-3 from CAM

El presente estudio tuvo como objetivo analizar la influencia de las distintas variables de juego en el resultado final de los partidos de hockey sobre patines. Se analizó la influencia de la localización del partido, marcar el primer gol del encuentro, ir ganando al finalizar la primera parte e ir ganando al finalizar la primera parte por más de un gol. Se analizaron un total de 480 partidos de la primera división española (OK Liga) disputados durante las temporadas 2017-2018 y 2018-2019. El análisis de regresión logística mostró que la variable que obtuvo una asociación más fuerte con la victoria fue ganar en la media parte por más de un gol (OR 4.47). Además, las variables ganar en la media parte (OR 3.35), marcar primero (OR 2.05) y localización del partido (OR 1.83) también fueron factores que mostraron una asociación positiva con el resultado final del partido. Los factores identificados pueden ayudar a los entrenadores y jugadores de hockey sobre patines a adaptar mejor sus estrategias y objetivos de entrenamiento antes de cada competición, estableciendo un mejor conocimiento y comprensión del juego

Reduction of three different metal precursors using low-temperature, low-pressure argon plasma technology.

Plasma-initiated free radical polymerization was used to engineer carbon nanoparticles (CNPs) with tailored chemical and physical properties. Following surface modification, CNPs were loaded with a highly effective anti-infection agent called metal-free Russian propolis ethanol extract (MFRPEE), thus, creating nano-based drug delivery systems (NBDDSs). The loading of MFRPEE onto grafted CNPs occurred naturally through both electrostatic interactions and hydrogen bonding. When constructed under optimal experimental conditions, the NBDDSs were stable under physiologic conditions, and demonstrated enhanced anti-biofilm activity when compared with free MFRPEE. Mechanistic studies revealed that the enhanced anti-infectious activity of the NBDDSs was attributed to the modified surface chemistry of grafted CNPs. More specifically, the overall positive surface charge on grafted CNPs, which stems from quaternary ammonium polymer brushes covalently bound to the CNPs, provides NBDDSs with the ability to specifically target negatively charged components of biofilms. When studying the release profile of MFRPEE from the modified CNPs, acidic components produced by a biofilm triggered the release of MFRPEE bound to the NBDDS. Once in its free form, the anti-infectious properties of MFRPEE became activated and damaged the extracellular polymeric matrix (EPM) of the biofilm. Once the architecture of the biofilm became compromised, the EPM was no longer capable of protecting the bacteria encapsulated within the biofilm from the anti-infectious agent. Consequently, exposure of bacteria to MFRPEE led to bacterial cell death and biofilm inactivation. The results obtained from this study begin to examine the potential application of NBDDSs for the treatment of healthcare-associated infections (HCAIs).

The frequency and intensity of extreme weather events represent a threat for biological diversity and are expected to increase in many regions over the following decades due to climate change. Our current knowledge about the impact of extreme weather events on the population dynamics of bird species is very limited. Here, we evaluated the impact of an extreme winter snowstorm on the abundance of 14 populations of the threatened Dupont’s Lark Chersophilus duponti, a resident bird whose European population is restricted to Spain. We found a drastic and significant population decline in the next reproductive season following the extreme weather event. During the control period (2017–2020) the species suffered an overall annual decline of 19.4% (±5.0, SE). However, the overall annual decline after the storm was 67.6% (±9.4, period 2019–2021), with a mean decline of 66.5% (±15.9) for seven populations monitored both the year before and the year after the snowstorm (period 2020–2021). The snow covered the ground for over 10 days in central and eastern Spain, which together with a subsequent extreme cold wave could have reduced the species ability to find food resources and properly thermoregulate, forcing the species to move to unknown areas. Indeed a few days after the storm, several individuals were reported in areas typically avoided. Such displacements may increase the mortality risk for dispersing individuals, besides the direct effects of the extreme cold event, such as thermal challenges to energy balance or a reduced immune function. We discuss the potential role that extreme weather events may have on the population dynamics and conservation of the species. This study was partially funded by the LIFE Ricoti programme (LIFE15-NAT-ES-000802), supported by the European Commission, Levantina y Asociado de Minerales, S.A., with the project “Estudios de investigación aplicado a la conservación de las poblaciones de alondra ricotí (Chersophilus duponti) en el entorno del municipio de Vallanca”, and by the Dirección General de Política Forestal y Espacios Naturales de la Junta de Comunidades de Castilla La Mancha with the project “SSCC/046/2017 Censo de Alondra ricotí en la provincia de Guadalajara. Año 2017”, Censuses in Catalonia were carried out with the support of the Generalitat of Catalonia. CPG acknowledges the support from the Ministerio de Educación y Formación Profesional through the Beatriz Galindo Fellowship (Beatriz Galindo – Convocatoria 2020).

Summary Activation of NOTCH signaling in human hematopoietic stem/progenitor cells (HSPCs) by treatment with an engineered Delta-like ligand (DELTA1ext-IgG [DXI]) has enabled ex vivo expansion of short-term HSPCs, but the effect on long-term repopulating hematopoietic stem cells (LTR-HSCs) remains uncertain. Here, we demonstrate that ex vivo culture of human adult HSPCs with DXI under low oxygen tension limits ER stress in LTR-HSCs and lineage-committed progenitors compared with normoxic cultures. A distinct HSC gene signature was upregulated in cells cultured with DXI in hypoxia and, after 21 days of culture, the frequency of LTR-HSCs increased 4.9-fold relative to uncultured cells and 4.2-fold compared with the normoxia + DXI group. NOTCH and hypoxia pathways intersected to maintain undifferentiated phenotypes in cultured HSPCs. Our work underscores the importance of mitigating ER stress perturbations to preserve functional LTR-HSCs in extended cultures and offers a clinically feasible platform for the expansion of human HSPCs., Graphical abstract, Highlights • Superior NOTCH-mediated expansion of human HSPCs in hypoxic cultures • Culture under hypoxia mitigates ER stress in human HSPCs • Hypoxia potentiates NOTCH intracellular signaling in cultured human HSPCs, Larochelle and colleagues concurrently activate NOTCH and hypoxic pathways in ex vivo cultures of human adult HSPCs to enable a clinically relevant expansion of cells with long-term repopulating potential after transplantation. They characterize the molecular intersection between the two signaling pathways and demonstrate the important role of low oxygen tension in mitigating ER stress during NOTCH-mediated expansion of human HSPCs.

SummaryThe medial prefrontal cortex (mPFC) controls emotional behaviors and cognition via connections with limbic excitatory afferents that engage various intra-mPFC inhibitory motifs The mPFC dynorphin (Dyn) / kappa-opioid receptor (KOR) system regulates affect and cognition and is implicated in neuropsychiatric disorders. However, it’s unclear how neuropeptides in the mPFC, including the Dyn / KOR system, control excitatory and inhibitory circuit motifs integral in information processing. Here, we provide a circuit-based framework wherein selective KOR expression in mPFC afferents or within mPFC feedforward and feedback inhibitory circuits gates how distinct limbic afferent inputs control mPFC neurons. Dyn/KOR signaling directly decreases the ability of KOR-expressing afferent inputs to drive mPFC cell activity. Dyn/KOR signaling also suppresses afferent-driven recruitment of inhibitory sub-networks via several mechanisms, disinhibiting KOR-negative excitatory afferent control of mPFC ensembles. Thus, the Dyn/KOR system toggles which afferent input controls mPFC circuits, providing mechanistic insights into the role of neuropeptides in shaping mPFC function.HighlightPathway-specific KOR expression confers selective filtering of mPFC afferents by dynorphinEndogenous dynorphin release gates KOR-expressing inputs to both dynorphin-expressing and lacking mPFC neuronsDynorphin / KOR modulation reveals parallel channels within amygdalo-cortical and cortical-cortical circuitsDynorphin disinhibits mPFC pyramidal neurons via KOR-mediated suppression of distinct inhibitory circuit motifs that preferentially impact SST-mediated feedforward inhibitionDynorphin / KOR signaling biases afferent control of mPFC principal cells away from KOR-positive and towards KOR-negative afferent inputs

Las devoluciones en caliente en Melilla, una ciudad española ubicada en la frontera terrestre entre Europa y Marruecos, en el norte de África, vulneran la normativa europea de protección de derechos humanos al no contemplar la identificación del migrante que salta la valla que separa ambos territorios, lo que impide reclamar esa decisión administrativa. De esta forma se le priva del derecho a la tutela judicial efectiva, consagrado en la Constitución Española. Tampoco se le permite solicitar asilo o acceder a servicios de intérprete o asistencia letrada junto a la alambrada, y se le devuelve por la vía de hecho a un país (Marruecos) donde ser migrante irregular es un delito. Se obvia así el principio de no devolución a un lugar que no es seguro y, en la mayoría de los casos, la prohibición de las expulsiones colectivas. Este artículo estudia el marco legal de las devoluciones en caliente, en vísperas de la sentencia del Tribunal Europeo de Derechos Humanos de febrero de 2020, que exoneró a España de responsabilidad al poner la seguridad de un Estado por encima de los derechos humanos.

Wind farm implementation is a rapidly growing source of landscape transformation that may alter ecological processes such as predator–prey interactions. We tested the hypothesis that wind farms increase the activity of nest predators and, ultimately, increment ground-nest predation rates. We placed 18 plots in Iberian shrub-steppes (11 at control and seven at wind farm sites), each one comprised nine artificial ground-nests (three quail eggs/nest). Artificial nests were placed during two events: at the beginning (April) and at the end (June) of the breeding season in 2016 (n = 324 artificial nests). We estimated the relative abundance of avian and large mammalian predators in the surroundings of each plot and recorded nest fate after 12 days exposure. We also measured variables at landscape and microhabitat scale that potentially affect predator abundance and nest predation. Wind farm sites contained higher cover of gravel roads and more large mammalian predators. Moreover, the abundance of large mammalian predators increased with surrounding cover of both trees and gravel-roads. Avian predator abundance and nest predation rates did not differ between control and wind farm sites, though nest predation did increase with the surrounding cover of crops and gravel roads. Lastly, nest predation was higher at the end of the breeding season and decreased with moss and lichen cover. Our results support previous evidence on the increase of mammalian predator abundance as the surface area of gravel-roads increases, pointing towards a potential mechanism for wind farms leading to rise ground-nest predation. Future wind energy projects should minimize the development of gravel-roads for wind turbine access or maintenance. This study was supported by Tragsatec—GrupoTragsa (project entitled “Effects of wind farms on Dupont’s lark nest predation”), the European Commission (Life-Ricotí project LIFE15-NAT-ES-000802) and the BBVA Foundation (BBVA-Dron Ricotí project). This paper contributes to project REMEDINAL-3 from CAM.

Introduction Medical students often have limited exposure to providing care to physically and cognitively disabled patients. To address this gap, Involvement with Disability Education and Advancement (IDEA) was started in 2015 at Rutgers New Jersey Medical School (NJMS). The organization provides NJMS students the opportunity to visit a school dedicated to disabled students and lead educational sessions on health topics. Materials and methods We conducted a survey study in 2018 to compare comfort levels between IDEA members and non-members in eliciting information from and providing medical attention to nonverbal, cognitively impaired, and physically disabled patients. The survey-based study utilized yes/no questions, and a Likert scale questionnaire to determine IDEA member and non-member comfort levels in working with various disabilities. Statistical analysis was performed using SAS Enterprise Guide 7.1; p value Results and discussion A total of 56 responses (19 members, 37 non-members) were analyzed. Regardless of IDEA membership, medical students of all years perceived themselves to have more comfort caring for physically disabled than cognitively impaired or nonverbal patients. IDEA members also recorded higher comfort levels with eliciting information from cognitively impaired patients and lower comfort levels with providing medical attention to physically disabled patients. Implications IDEA members may have increased comfort interacting with cognitively impaired individuals due to their regular experience and lower levels of comfort providing medical attention to physically disabled patients due to awareness of complex problems specific to the population. The current results warrant continued data collection and further evaluation.

A 13-year-old male was diagnosed with a glenoid fracture following direct shoulder trauma, for which surgical treatment was considered. After referral to a center for pediatric orthopedic care, physical examination, contralateral shoulder X-ray, and detailed computed tomography examination ruled out the presence of fracture; these findings were later confirmed by magnetic resonance imaging. Normal ossification patterns in the adolescent shoulder may simulate a fracture in traumatic settings. To accurately diagnose and manage pediatric shoulder pathology, orthopedic surgeons must be aware of the normal anatomy of the growing shoulder, its secondary ossification centers, and growth plates.

Una de las dimensiones más importantes de la seguridad hídrica de la población es el abastecimiento de agua potable. Este concepto plantea en cierta medida la esperanza de que la sociedad alcance metas ideales o logre un estado deseado en ese aspecto. La seguridad hídrica se define como la capacidad de una población para salvaguardar el acceso a cantidades adecuadas de agua de calidad aceptable, que permita sustentar tanto la salud humana como la del ecosistema, basándose en las cuencas hidrográficas, así como garantizar la protección de la vida y la propiedad contra riesgos relacionados con el agua inundaciones, derrumbes, subsidencia de suelos y sequías. En este trabajo se presenta la seguridad hídrica y gobernanza en el abastecimiento de agua, como un déficit y desarrollo de la capacidad institucional para enfrentar los desafíos sanitarios. Es estudio de caso se presenta en la provincia de Santa Fe (Argentina).

Natural killer (NK) cells are cytotoxic cells that mediate anti-tumor and anti-viral immunity. The response of NK cells to different cytokines and stimuli may involve cell survival, proliferation, and changes in their cytotoxic function. These responses will be supported by changes in cellular metabolism. Therefore, changes in NK metabolic parameters could somehow predict changes in NK cell function and cytotoxicity. In this chapter, we describe a protocol to measure NK cell metabolism in primary human NK cells by using an extracellular flux analyzer. This machine measures pH and oxygen changes in the medium and allows the study of NK cell glycolysis and mitochondrial respiration in real time with a small number of cells.

The NLRP3 inflammasome, a key component of the innate immune system that mediates caspase-1 activation, which in turn induces cleavage of the pyroptosis executioner gasdermin D and the proinflammatory cytokines IL-1β and IL-18, requires two signals to be activated. First, inflammasome priming is achieved after activation of Toll-like receptors, which leads to NF-κB signaling and transcriptional activation of the genes for NLRP3 and IL-1β. Next, the inflammasome complex is activated by a second signal that induces extrusion of mitochondrial DNA to the cytosol of the cell, which leads to its oligomerization by a not fully understood mechanism. Here we describe a simple method that employs quantitative polymerase chain reaction (qPCR) using SYBR green to measure the presence of mitochondrial DNA (mtDNA) in the cytosol, which can be used to measure cytosolic mtDNA levels after inflammasome activation.

In human-wildlife conflicts, it is crucial to develop accurate protocols for the reliable verification of the causative species and its relationship with potential damage claims. One of such conflicts is that occurring between apiarists and bee-eaters. In this work, we aim to assess the utility of passive acoustic monitoring (PAM) as an efficient methodology to measure European bee-eater (Merops apiaster) predation pressure at beehives and its impact on honeybees foraging activity. Using Autonomous Recording Units (ARUs) in apiaries, coupled to automated recognition methods for bee-eater calls identification, we found a positive relationship between Vocal Activity Rate (VAR) index and number of bee-eaters hunting attempts on honeybees. We also found that VAR varied over time, showing a lower predation pressure during midday hours and higher during the post-breeding migratory period. Honeybees flying activity was negatively associated with VAR and this relationship was conditioned by the hour of the day. Our study offers a new application of PAM and acoustic derived indices for the evaluation of potential damages caused by wildlife. We focused on the interaction between honeybees and the European bee-eater, but we expect PAM might be useful also to remotely monitor impacts to human activities produced by other vocally active species. European bee-eater monitoring was funded by the Department of Territory and Sustainability of the Generalitat de Catalunya. ARUs conception and design were partially supported by Programa de Investigación y Conservación del Zoo de Barcelona within the project ‘Nuevas tecnologías para viejos trabajos. Uso de grabadores automáticos para la detección y censo de especies raras y amenazadas. El caso de la alondra ricotí en Lleida y otras poblaciones pequeñas’. CPG acknowledges the support from Ministerio de Educación y Formación Profesional through the Beatriz Galindo Fellowship (Beatriz Galindo – Convocatoria 2020).

[EN] Stress in birds has been widely studied through the measurement of heterophil-to-lymphocyte ratio (H/L ratio). In this study we aimed to assess for the first time the potential variation of stress, measured as H/L ratio, associated to geography (between-country variation) and seasonality (between seasons and within the breeding season), as well as the leukocyte profiles, in the threatened Dupont’s Lark (Chersophilus duponti), using samples from Spain and Morocco. Furthermore, we tested whether variation in H/L ratio was associated with variables such as population density, presence of blood parasites and individual body condition. We found that H/L ratio did not vary between countries, but individuals captured during the breeding season showed higher values of H/L compared to non-breeding ones. Neither male density, nor date within the breeding season had an effect on the H/L ratio. In Spain, individuals with higher body condition showed lower H/L ratio regardless of whether they were malaria-infected. In Morocco, malaria-infected individuals showed higher values of H/L ratio than the non-infected birds. Moreover, we found that our average values of H/L ratio in Morocco were within the ranges of other passerines, but not in Spain. Individuals with higher H/L ratios may be more stressed or present higher capability to face stressful situations. Although H/L ratio is a useful and relatively easy way to obtain measure of stress, the impact that the environment might have on stress and the way it is explained by H/L ratio must be addressed carefully. This study provides new insight for this species’ biology and provides useful reference information to test the status and survival of other populations. [DE] Stress bei Vögeln ist durch die Messung des Verhältnisses von Heterophilen zu T-Lymphozyten (H/L-Verhältnis) umfassend untersucht worden. In dieser Studie wollten wir zum ersten Mal die potentiellen Veränderungen des Stresses in Verbindung mit der Geografie (Unterschiede zwischen einzelnen Ländern) und der Saisonalität (zwischen den Jahreszeiten und innerhalb der Brutsaison), gemessen als H/L-Verhältnis, sowie die Leukozytenprofile bei der bedrohten Dupontlerche (Chersophilus duponti) anhand von Proben aus Spanien und Marokko bewerten. Darüber hinaus haben wir untersucht, ob das H/L-Verhältnis mit Variablen wie der Populationsdichte, dem Vorhandensein von Blutparasiten und der individuellen physischen Verfassung zusammenhängt. Wir stellten fest, dass das H/L-Verhältnis zwischen den einzelnen Ländern nicht variierte, aber die während der Brutzeit gefangenen Tiere höhere H/L-Werte aufwiesen als nicht brütende Tiere. Weder die Dichte an Männchen, noch der Zeitpunkt innerhalb der Brutsaison hatten einen Einfluss auf das H/L-Verhältnis. In Spanien wiesen Tiere mit einer besseren physischen Verfassung ein niedrigeres H/L-Verhältnis auf, unabhängig davon, ob sie mit Malaria infiziert waren. In Marokko zeigten malariainfizierte Vögel höhere Werte des H/L-Verhältnisses als nicht infizierte. Außerdem stellten wir fest, dass unsere Durchschnittswerte für das H/L-Verhältnis in Marokko innerhalb der Werte für andere Sperlingsvögel lagen, nicht aber in Spanien. Tiere mit einem höheren H/L-Verhältnis sind möglicherweise gestresster oder besser in der Lage, mit Stresssituationen umzugehen. Obwohl das H/L-Verhältnis ein nützliches und relativ einfach zu beschaffendes Maß für Stress ist, muss der eventuelle Einfluss der Umwelt auf Stress und die Möglichkeiten, diesen durch das H/L-Verhältnis zu erklären, sorgfältig untersucht werden. Diese Untersuchung bietet neue Einblicke in die Biologie dieser Art und liefert nützliche Referenzinformationen für die Bestimmung des aktuellen Status und für das Überleben anderer Populationen. Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. This study was partially funded by the authors, the Spanish Ministry of Environment (MMA; J.J. Areces and B. Heredia), the Spanish Agency for International Cooperation (AECI), and the LIFE Ricoti (LIFE15-NAT-ES-000802), supported by the European Comisison. D.B.R. was supported by FPI-UAM fellowship from the Universidad Autónoma de Madrid (UAM), and the collaboration of the Instituto de Investigación en Recursos Cinegéticos (IREC-CSIC-UCLM). We wish to thank the Servicio de Vida Silvestre of Conselleria D’infraestructures, Territori i Medi Ambient (Generalitat Valenciana) and the Moroccan government for ringing permits and supporting our work. We thank V. Garza, A. Ramírez, R. del pozo, E. Juarez, E.L. García de la Morena, F. Suárez, M. Radi, M. Znari and M. Alouí, and the Colectivo Ornitológico Cigüeña Negra for their help during fieldtrips and arrangements. We also thank two anonymous referees whose helpful comments contributed to improve the paper. This work was approved by the Local Ethical Committee for Animal Experiments of the Autónoma University of Madrid (CEI80-1468-A229).

La estimación de la postura del rostro humano es la tarea de estimar la orientación de las cabezas a partir de imágenes o video, Esta disciplina ha sufrido en los últimos años un avance considerable debido principalmente a numerosas investigaciones en el campo del Deep Learning. Las aplicaciones de la estimación del rostro humano son múltiples y van desde la realidad virtual y aumentada, asistencia del conductor, interacciones sociales como la mirada mutua, generación de mapas de atención para la venta minorista o la publicidad, etc. En este trabajo he querido recoger desde los aspectos teóricos en los que se basan los desarrollos sobre esta área hasta aspectos más prácticos como pueden ser el diseño y entrenamiento de una red neuronal convolucional. Primeramente, he recogido el marco teórico donde se mueven todos los avances del campo de la estimación de rostros, así realizare una breve descripción del Deep Learning y donde se enclava dentro de las técnicas de Inteligencia artificial y hare una breve descripción de la historia del Deep Learning y sus hitos más notables. Dentro del marco teórico me ha parecido fundamental el describir una serie de conceptos básicos del Deep Learning que me parece necesarios para entender todos los conceptos que se desarrollaran a lo largo del trabajo. Los últimos avances del campo de la detección del rostro humano se basan fundamentalmente en el área de las redes convolucionales, por lo que dentro del marco teórico describiré brevemente cómo funciona una red neuronal convolucional y los elementos que componen una arquitectura básica. Dentro del marco teórico, pero ya como un aspecto más practico describiré los pasos del ciclo de vida del diseño de una red convolucional con el framework Pytorch, en este apartado también revisare una de las técnicas más utilizadas hoy en día para los desarrollos de nuevos modelos como es la transferencia de conocimiento (“Transfer Learning”), veremos en que consiste y las ventajas que aporta al desarrollo de nuevos modelos usando otros ya existente y entrenados. Por último, me centrare en el diseño de un modelo para la estimación de la pose del rostro humano, definiré los requerimientos que debe tener el modelo y realizare un diseño para tal fin usando las últimas técnicas usadas en desarrollos similares. Posteriormente el modelo será entrenado con los datos de referencia de la pose del rostro y se evaluará su rendimiento frente a otros modelos ya existentes.---ABSTRACT---Human face pose estimation is the task of estimating the orientation of heads from images or video. This discipline has undergone considerable progress in recent years mainly due to numerous investigations in the field of Deep Learning. The applications of human face estimation are multiple and range from virtual and augmented reality, driver assistance, social interactions such as mutual gaze, generation of attention maps for retail or advertising, etc. .... In this work I have tried to collect from theoretical aspects on which the developments in this area are based to more practical aspects such as the design and training of a convolutional neural network. First of all, I have collected the theoretical framework where all the advances in the field of face estimation are based, I will give a brief description of Deep Learning and where it fits into the Artificial Intelligence techniques and I will make a brief description of the history of Deep Learning and its most notable milestones. Within the theoretical framework, it has seemed fundamental to me to describe a series of basic concepts of Deep Learning that I think are necessary to understand all the concepts that will be developed throughout the work. The latest advances in the field of human face detection are mainly based on the area of convolutional networks, so within the theoretical framework I will briefly describe how a convolutional neural network works and the elements that make up a basic architecture. Within the theoretical framework, but as a more practical aspect, I will describe the steps of the design life cycle of a convolutional network with the Pytorch framework. In this section I will also review one of the most used techniques nowadays for the development of new models, the transfer of knowledge ("transfer learning"), we will see what it consists of and the advantages it brings to the development of new models using other existing and trained models. Finally, I will focus on the design of a model for the estimation of the pose of the human face, I will define the requirements that the model must have and I will make a design for this purpose using the latest techniques used in similar developments. Subsequently, the model will be trained with the reference data of the face pose and its performance will be evaluated against other existing models.

Over the last decades, several studies have analyzed the collocational preferences of particular sets of near synonyms from a synchronic viewpoint, while their diachronic development has generally been disregarded. The aim of this paper is to partially fill this gap by examining the collocational behavior of the adjectives fragrant, perfumed, and scented, which denote the concept sweet smelling, over the time span 1810–2009. To this purpose, instances of the three near-synonyms and their L5–R5 collocates were extracted from the Corpus of Historical American English (COHA) and then submitted to statistical modeling. Results indicate that, at the beginning of the time span analyzed, the collocational preferences of scented and perfumed are very similar but, over time, scented becomes semantically closer to fragrant, while at the same time taking over some of its functions.

Interleukin 15 (IL-15) is an essential cytokine for the survival and proliferation of natural killer (NK) cells. IL-15 activates signaling by the β and common γ (γ(c)) chain heterodimer of the IL-2 receptor through trans-presentation by cells expressing IL-15 bound to the α chain of the IL-15 receptor (IL-15Rα). We show here that membrane-associated IL-15Rα–IL-15 complexes are transferred from presenting cells to NK cells through trans-endocytosis and contribute to the phosphorylation of ribosomal protein S6 and NK cell proliferation. NK cell interaction with soluble or surface-bound IL-15Rα–IL-15 complex resulted in Stat5 phosphorylation and NK cell survival at a concentration or density of the complex much lower than required to stimulate S6 phosphorylation. Despite this efficient response, Stat5 phosphorylation was reduced after inhibition of metalloprotease-induced IL-15Rα–IL-15 shedding from trans-presenting cells, whereas S6 phosphorylation was unaffected. Conversely, inhibition of trans-endocytosis by silencing of the small GTPase TC21 or expression of a dominant-negative TC21 reduced S6 phosphorylation but not Stat5 phosphorylation. Thus, trans-endocytosis of membrane-associated IL-15Rα–IL-15 provides a mode of regulating NK cells that is not afforded to IL-2 and is distinct from activation by soluble IL-15. These results may explain the strict IL-15 dependence of NK cells and illustrate how the cellular compartment in which receptor–ligand interaction occurs can influence functional outcome.

GCN5L1 regulates mitochondrial protein acetylation, cellular bioenergetics, reactive oxygen species (ROS) generation, and organelle positioning in a number of diverse cell types. However, the functional role of GCN5L1 in the heart is currently unknown. As many of the factors regulated by GCN5L1 play a major role in ischemia-reperfusion (I/R) injury, we sought to determine if GCN5L1 is an important nexus in the response to cardiac ischemic stress. Deletion of GCN5L1 in cardiomyocytes resulted in impaired myocardial post-ischemic function and increased infarct development in isolated work-performing hearts. GCN5L1 knockout hearts displayed hallmarks of ROS damage, and scavenging of ROS restored cardiac function and reduced infarct volume in vivo. GCN5L1 knockdown in cardiac-derived AC16 cells was associated with reduced activation of the pro-survival MAP kinase ERK1/2, which was also reversed by ROS scavenging, leading to restored cell viability. We therefore conclude that GCN5L1 activity provides an important protection against I/R induced, ROS-mediated damage in the ischemic heart.

The mitochondria play an important role in the activation of the innate immune system. This organelle modulates the metabolic reprogramming of the immune cell into proinflammatory or anti-inflammatory subtypes, which typically utilize very different metabolic pathways to fulfill their functions. It also acts as a signaling platform to activate immune routes in both immune and nonimmune cells, as it can generate agonists for inflammatory pathways, including toll-like receptors, inflammasomes, or the cyclic GMP–AMP synthase–stimulator of interferon genes pathway, which lead to the generation of proinflammatory cytokines and antiviral molecules such as type-I interferons. These novel functions of the mitochondria are important in the fight against pathogens, but also contribute to human disease when dysregulated. This review describes recent findings in this field and highlights the role of mitochondrial nucleic acids in the regulation of innate immune signaling pathways, This work was supported by the Ministry of Science and Innovation (MICINN) of Spain (grants RYC2018-026050-I and PID2019-105665RAI00 to JT) and by an institutional grant from the Fundación Ramon Areces to the Centro de Biología Molecular Severo Ochoa. CM is the recipient of a Contrato Predoctoral para la Formación de Doctores from MICINN (PRE2020-094403, associated with grant PID2019-105665RA-I00 to JT), and AO is supported by a researcher contract from Comunidad de Madrid (grant PEJ-2020-AI/BMD-17941 to JT)

Constitutive activity of the immune surveillance system detects and kills cancerous cells, although many cancers have developed strategies to avoid detection and to resist their destruction. Cancer immunotherapy entails the manipulation of components of the endogenous immune system as targeted approaches to control and destroy cancer cells. Since one of the major limitations for the antitumor activity of immune cells is the immunosuppressive tumor microenvironment (TME), boosting the immune system to overcome the inhibition provided by the TME is a critical component of oncotherapeutics. In this article, we discuss the main effects of the TME on the metabolism and function of immune cells, and review emerging strategies to potentiate immune cell metabolism to promote antitumor effects either as monotherapeutics or in combination with conventional chemotherapy to optimize cancer management., Intramural Research Programs of the National Institutes of Health, National Cancer Institute and National Heart, Lung, and Blood Institute. JT is supported by the Ministry of Science and Innovation (MICINN) of Spain (grants RYC2018-026050-I and PID2019-105665RA-I00)

In mice, time of day strongly influences lethality in response to LPS, with survival greatest at the beginning compared to the end of the light cycle. Here we show that feeding, rather than light, controls time-of-day dependent LPS sensitivity. Mortality following LPS administration is independent of cytokine production and the clock regulator BMAL1 expressed in myeloid cells. In contrast, deletion of BMAL1 in hepatocytes globally disrupts the transcriptional response to the feeding cycle in the liver and results in constitutively high LPS sensitivity. Using RNAseq and functional validation studies we identify hepatic farnesoid X receptor (FXR) signalling as a BMAL1 and feeding-dependent regulator of LPS susceptibility. These results show that hepatocyte-intrinsic BMAL1 and FXR signalling integrate nutritional cues to regulate survival in response to innate immune stimuli. Understanding hepatic molecular programmes operational in response to these cues could identify novel pathways for targeting to enhance endotoxemia resistance., NIAMS. S.S.G. was supported by the NIH-Wellcome

The New Jersey Pediatric Residency Advocacy Collaborative (NJPRAC) is a statewide collaborative with faculty leads from each of the 10 New Jersey pediatric residency programs. The 2 major goals of the collaborative were to build community partnerships between pediatric residency programs and local organizations and develop a core advocacy curriculum. In this article, we focus on how the NJPRAC built community partnerships with Family Success Centers (FSCs) across the state over the course of a 2-year period. FSCs are located within every county in the state and fall under the New Jersey Department of Children and Families, providing resources and supports for families in crisis, with a focus on child abuse prevention services. Amid this growing partnership, the coronavirus disease 2019 (COVID-19) pandemic forced the NJPRAC to swiftly pivot its partnership and develop innovative programs to support families during the COVID-19 pandemic. As FSC leadership communicated families’ concerns to the collaborative, we initiated the Virtual House Call webinar, which incorporated pediatricians, community leaders, and allied health professionals to answer COVID-19 questions. These webinars quickly expanded into weekly interprofessional series, with experts in mental health, law, nutrition, and dentistry partnering with pediatricians from various subspecialties. Key to the webinars’ success was responding in real time to audience questions, collaborating with the FSC leadership on content, and garnering the support from the local New Jersey Chapter, American Academy of Pediatrics and the national American Academy of Pediatrics. A key challenge remains to meaningfully incorporate pediatric trainees into community partnerships. The NJPRAC plans to continue the Virtual House Call series with continuous input from the FSCs and participating families.