4,908 research outputs found

    PadrÔes de variação genética em loci sob selecção na abelha ibérica: comparação da selecção balanceada e direccional

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    A PenĂ­nsula IbĂ©rica tem sido reconhecida como um "hotspot" de diversidade c endemismo para diversas espĂ©cies quer animais quer vegetais. Em parte esta grande diversidade encontrada na PenĂ­nsula IbĂ©rica deve-se ao flicto de este local ter sido utilizado como refĂșgio por diferentes espĂ©cies durante as glaciaçÎes A abelha Ă© um dos muitos casos onde este processo aconteceu. Na verdade, a PenĂ­nsula IbĂ©rica Ă© umas das regiĂ”es da Europa onde esta espĂ©cie apresenta uma maior diversidade c complexidade genĂ©tica. A abelha ibĂ©rica que estĂĄ distribuĂ­da pela PenĂ­nsula IbĂ©rica Ă© o fruto de uma hibridação natural entre a linhagem Africana c a linhagem da Europa ocidental. O estudo de zonas hĂ­bridas tem sido muito importante para compreender os processos evolutivos que levaram Ă  complexidade genĂ©tica tĂŁo caracterĂ­stica dos refĂșgios O objectivo deste trabalho Ă© fazer uma abordagem inicial para perceber como Ă© que os diferentes tipos de selecção (balanceadora e direccional) influenciam a diversidade genĂ©tica das abelhas na PenĂ­nsula IbĂ©rica e tentar perceber qual o papel da selecção na divergĂȘncia adaptativa das populaçÔes. Para tal foram calculadas algumas cstatisticas sumĂĄrias e tambĂ©m toram utilizados diversos sothvares que implementam algoritmos Bayesianos de forma a verificar que estrutura Ă© captada ao utilizar-se as regiĂ”es do genoma sob diferentes tipos de selecção (balanceadora ou direccional). No total foram detectados 22 loci sob selecção usando o Bayescan, 9 dos quais apresentavam aparentam estar sob de uma selecção balanceada c 13 sob selecção direccional. Neste trabalho Ă© representado o padrĂŁo obtido utilizado software "STRUCTURE

    Patrones de diversidad neutral y adaptativa de la abeja Ibérica

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    La penĂ­nsula ibĂ©rica es conocida como un importante foco (hotspot) de diversidad y endemismos de numerosas especies de plantas y animales representando por ello una de las regiones prioritarias por la conservaciĂłn en Europa. Varios factores geomorfolĂłgicos y ambientales contribuyen a esta riqueza, concretamente: la localizaciĂłn geogrĂĄfica en el extremo sudoeste de Europa, el aislamiento en relaciĂłn al resto de Europa por la barrera geogrĂĄfica de los Pirineos, la complejidad fisiogrĂĄfica y la diversidad climĂĄtica resultante de la heterogeneidad fisiogrĂĄfica y de las distintas influencias del AtlĂĄntico y del MediterrĂĄneo. Una conjugaciĂłn de estos factores hacen de la penĂ­nsula ibĂ©rica no solo uno cuna de diferenciaciĂłn y especiaciĂłn sino tambiĂ©n un importante refugio que albergĂł durante varios periodos glaciales del Pleistoceno muchas de las especies de plantos y animales que hoy colonizan el Norte y el Centra de Europa {Hewitt, 1999).Fundação para a CiĂȘncia e Tecnologi

    Management of allergic rhinitis symptoms in the pharmacy Pocket guide 2022

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    Allergic rhinitis (AR) management requires a coordinated effort from healthcare providers and patients. Pharmacists are key members of these integrated care pathways resolving medication-related problems, optimizing regimens, improving adherence and recommending therapies while establishing liaisons between patients and physicians.Allergic Rhinitis and its Impact on Asthma (ARIA) first published a reference document on the pharmacist's role in allergic rhinitis management in 2004. Several guidelines were developed over the past 20 years improving the care of allergic rhinitis patients through an evidence-based, integrated care approach.This ARIA/EAACI/FIP Position Paper is based on the latest ARIA in the Pharmacy guidelines and provides: (a) a structured approach to pharmacists identifying people with AR and/or allergic conjunctivitis as well as those at risk of poor disease control; (b) an evidence-based clinical decision support tool for optimising the management of allergic rhinitis in the community pharmacy; and (c) a framework of referral to the physician.This document is not intended to be a mandatory standard of care but is provided as a basis for pharmacists and their staff to develop relevant local standards of care for their patients, within their local practice environment. Pharmacy care varies between countries, and the guide should be adapted to the local situation.© 2022 The Authors. Clinical and Translational Allergy published by John Wiley & Sons Ltd on behalf of European Academy of Allergy and Clinical Immunology

    A large outbreak of Legionnaires’ Disease in an industrial town in Portugal

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    Background We describe the investigation and control of an outbreak of Legionnaires’ disease in Portugal in October, November and December 2014. Methods Confirmed cases were individuals with pneumonia, laboratory evidence of Legionella pneumophila serogroup 1 and exposure, by residence, occupational or leisure to the affected municipalities. 49 possible sources were reduced to four potential sources, all industries with wet cooling system, following risk assessment. We geo-referenced cases’ residences and the location of cooling towers defining four study areas 10 km buffer centered on each cooling tower system. We compared the number of cases with expected numbers, calculated from the outbreak's attack rates applied to 2011 census population. Using Stones’ Test, we tested observed to expected ratios for decline in risk, with distance up to 10 km four directions. Isolates of Legionella pneumophila were compared using molecular methods. Results We identified 403 cases, 377 of which were confirmed, 14 patients died. Patients became ill between 14 October and 2 December. A NE wind and thermal inversion were recorded during the estimated period of exposure. Disease risk was highest in people living south west from all of the industries identified and decreased with distance (p < 0.001). 71 clinical isolates demonstrated an identical SBT profile to an isolate from a cooling tower. Whole genome sequencing identified an unusual L. pneumophila subsp. fraseri serogroup 1 as the outbreak causative strain, and confirmed isolates’ relatedness. Conclusions Industrial wet cooling systems, bacteria with enhanced survival characteristics and a combination of climatic conditions contributed to the second largest outbreak of Legionnaires’ disease recorded internationally.info:eu-repo/semantics/publishedVersio

    Vascular Smooth Muscle Cell Stiffness and Adhesion to Collagen I Modified by Vasoactive Agonists

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    In vascular smooth muscle cells (VSMCs) integrin-mediated adhesion to extracellular matrix (ECM) proteins play important roles in sustaining vascular tone and resistance. The main goal of this study was to determine whether VSMCs adhesion to type I collagen (COL-I) was altered in parallel with the changes in the VSMCs contractile state induced by vasoconstrictors and vasodilators. VSMCs were isolated from rat cremaster skeletal muscle arterioles and maintained in primary culture without passage. Cell adhesion and cell E-modulus were assessed using atomic force microscopy (AFM) by repetitive nano-indentation of the AFM probe on the cell surface at 0.1 Hz sampling frequency and 3200 nm Z-piezo travelling distance (approach and retraction). AFM probes were tipped with a 5 ÎŒm diameter microbead functionalized with COL-I (1mg\ml). Results showed that the vasoconstrictor angiotensin II (ANG-II; 10−6 ) significantly increased (p<0.05) VSMC E-modulus and adhesion probability to COL-I by approximately 35% and 33%, respectively. In contrast, the vasodilator adenosine (ADO; 10−4 ) significantly decreased (p<0.05) VSMC E-modulus and adhesion probability by approximately −33% and −17%, respectively. Similarly, the NO donor (PANOate, 10−6 M), a potent vasodilator, also significantly decreased (p<0.05) the VSMC E-modulus and COL-I adhesion probability by −38% and −35%, respectively. These observations support the hypothesis that integrin-mediated VSMC adhesion to the ECM protein COL-I is dynamically regulated in parallel with VSMC contractile activation. These data suggest that the signal transduction pathways modulating VSMC contractile activation and relaxation, in addition to ECM adhesion, interact during regulation of contractile state

    Brazil in the Era of Fascism: The “New State” of GetĂșlio Vargas

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    The New State established in Brazil by GetĂșlio Vargas (1937–1945) is the most important case of the institutionalisation of a dictatorship of the fascism era in Latin America. During this time, an impressive spectrum of authoritarian regimes was established, some of which were very instable and poorly institutionalised, while others were more consolidated. Roger Griffin coined the concept of para-fascism for some of them, and the “New State” of GetĂșlio Vargas in Brazil is a paradigmatic case. In this essay, we analyse the processes of institutional reform in 1930s Brazil paying particular attention to how domestic political actors look at institutional models of fascism and corporatism.info:eu-repo/semantics/publishedVersio

    Observation of associated near-side and away-side long-range correlations in √sNN=5.02  TeV proton-lead collisions with the ATLAS detector

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    Two-particle correlations in relative azimuthal angle (Δϕ) and pseudorapidity (Δη) are measured in √sNN=5.02  TeV p+Pb collisions using the ATLAS detector at the LHC. The measurements are performed using approximately 1  Όb-1 of data as a function of transverse momentum (pT) and the transverse energy (ÎŁETPb) summed over 3.1<η<4.9 in the direction of the Pb beam. The correlation function, constructed from charged particles, exhibits a long-range (2<|Δη|<5) “near-side” (Δϕ∌0) correlation that grows rapidly with increasing ÎŁETPb. A long-range “away-side” (Δϕ∌π) correlation, obtained by subtracting the expected contributions from recoiling dijets and other sources estimated using events with small ÎŁETPb, is found to match the near-side correlation in magnitude, shape (in Δη and Δϕ) and ÎŁETPb dependence. The resultant Δϕ correlation is approximately symmetric about π/2, and is consistent with a dominant cos⁥2Δϕ modulation for all ÎŁETPb ranges and particle pT
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