96 research outputs found

    Turismo vivencial y su relación con la oferta turística en el Centro Poblado Comunidad Nativa kechwa - Wayku año 2018

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    El presente trabajo de investigación titulado “Turismo vivencial y su relación con la oferta turística en el Centro Poblado Comunidad Nativa Kechwa-Wayku, año 2018”, tuvo como objetivo general determinar la relación entre el turismo vivencial y la oferta turística en el Centro Poblado Comunidad Nativa Kechwa-Wayku, año 2018, apoyándose en la teoría de Ampuero, M. (2016) para la variable turismo vivencial y Covarrubias, R. (2013) para la variable oferta turística, para ello se contó con una población de 3000 pobladores y una muestra de 341 pobladores a los que se aplicó las encuestas para luego procesar los datos, se concluye que el turismo vivencial del Centro Poblado Comunidad Nativa Kechwa-Wayku, menciona que es un lugar acogedor y estos son satisfactorios para cumplir con sus expectativas del lugar, asimismo la oferta turística está regularmente de acuerdo de como se viene desarrollando, todos los años tratan de obtener datos estadísticos de cuantos turistas acuden a la comunidad. Concluyendo mediante los valores obtenidos según el coeficiente de correlación del Spearman que, si existe una relación positiva, siendo esta relación muy significativa debido a que el valor es de 0,374, es mayor a 0.05, de esta manera se acepta la Hi

    Fetal Growth Restriction

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    Fetal growth defect is classified into intrauterine growth restriction (IUGR) and small-for-gestational-age (SGA) fetus based on the estimated fetal weight percentile and Doppler hemodynamic parameters. IUGR pathophysiology and etiology are complex and diverse, highlighting placental insufficiency as a paradigm, which explains its association with other entities of great clinical importance such as preeclampsia. The poor long- and short-term perinatal and postnatal results associated with this context make it necessary to establish an early diagnosis and a therapeutic strategy, which can be challenging due to the compromise between the threat of intrauterine permanence and the prematurity problem. Consequently, a systematic and protocolized diagnostic-therapeutic management, based on scientific evidence, is necessary to determine whether obstetric intervention through a preterm delivery is advisable to improve the perinatal outcomes of these patients

    Integration of in vitro allergy test results and ratio analysis for the diagnosis and treatment of allergic patients (INTEGRA)

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    Al·lèrgia; Diagnòstic molecular; RecomanacionsAlergia; Diagnóstico molecular; RecomendacionesAllergy; Molecular diagnosis; RecommendationsThe introduction of molecular diagnosis into routine clinical practice has substantially improved the diagnosis and management of allergic patients by allowing clinicians to precisely identify the allergenic molecule responsible for immunoglobulin E (IgE)-mediated allergies. However, it can be challenging to accurately interpret the results of molecular assays, partly due to the limited evidence base. In this context, a panel of experts with extensive experience in interpreting in vitro measures of total and serum specific IgE reviewed the available scientific evidence. After this review, the panel selected a series of representative case studies to demonstrate how determination of specific and total IgE values and the relationship between them (ratio analysis) can add value to the diagnostic process by more precisely defining the patient’s sensitization profile. Finally, the experts developed a series of recommendations on the clinical application of ratio analysis to optimize and complement the classical approach to allergy diagnosis

    Sensitisation to Act 2d in patientsallergic to Alternaria alternanta: an epiphenomenom without clinical significance?

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    In the last few years, the introduction of microarrays in the diagnosis of type I allergy is allowing the clinicians to have a much more accurate picture of their allergenic profile. However, the simultaneous measurement of specific IgE to multiple molecules can show unexpected sensitisations, without knowing their clinical relevance. For instance, we have been observing a high prevalence (74%) of sensitisation to Act d 2 (the thaumatin of kiwifruit) in patients sensitised to Alt a 1 (major allergen of Alternaria alternata) with a confirmed allergy to this mould. The aim of the present study was to clarify if there was any clinical relevance in this finding

    Universitat i empresa química: un diàleg necessari entre dos mons complementaris

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    Un diàleg fluid entre les universitats i altres centres de recerca de Catalunya amb el teixit empresarial és, avui dia, una exigència social ineludible. La transferència de coneixement des dels centres de recerca públics a les nostres empreses ha de servir per millorar la seva competitivitat internacional. Entre les diferents formes de col·laboració, han pres força recentment els doctorats industrials. En aquest article es recullen les característiques bàsiques d'aquests doctorats, així com les experiències del nostre grup de treball i, en concret, el desenvolupament d'una nova síntesi industrial de l'entecavir, un potent fàrmac contra l'hepatitis B.A fluid dialogue between university (and other research centres) and the Catalan chemical companies emerges as an inescapable social demand. Knowledge transfer from public research centres should improve the international competitiveness of our chemical industry. Among the various forms of collaboration, the industrial doctorates have recently gained relevance. This article covers the basic features of these doctorates, as well as the experience of our research group in this field and specially the development of a new industrial synthesis of entecavir, a potent drug against hepatitis B

    Allergic rhinitis: continuous or on demand antihistamine therapy?

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    Allergic rhinitis is an inflammatory disease of the nasal mucosa, caused by an IgE-mediated reaction after exposure to the allergen to which the patient is sensitized. Histamine is the most important preformed mediator released in the early stage of the allergic reaction, and also contributes to the late phase of the latter, exhibiting proinflammatory effects. Minimal persistent inflammation is a physiopathological phenomenon induced by the presence of an inflammatory cell infiltrate, together with ICAM-1 expression in the epithelial cells of the mucosa exposed to the allergen to which they are sensitized, in the absence of clinical symptoms. This molecule is considered to be an allergic inflammatory marker. The priming effect first described by Connell in 1968 consists of the reduction in the allergen concentration required to elicit a nasal hyper-response when performing a daily nasal exposure test. This implies that with natural exposure to inhaled allergens, small amounts of environmental allergen will maintain the patient symptoms, and thus of course minimal persistent inflammation. Considering the above, it is questionable whether antihistamines should be administered on a continuous basis or upon demand. The antihistamines, and fundamentally the second-generation drugs, have been shown to exert an antiinflammatory effect, and this effect is greater when the drug is administered continuously than when administered upon demand. Likewise, a reduction in treatment cost and an improvement in quality of life among patients treated on a continuous basis has been documented. However, no studies have been specifically designed to clarify the indication of treatment on a continuous basis or upon demand, as occurs in the GINA. As a result, the individualization of treatment according to the concrete characteristics of each patient seems to be the best approach, at least for the time being

    Use of antihistamines in pediatrics

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    Drugs with antihistamine action are among the most commonly prescribed medicines in pediatrics. According to the International Medical Statistics (IMS), almost two million antihistamine units (in solution) for pediatric use were sold in Spain during 2006 - at a cost of nearly 6 million euros. Of this amount, 34% corresponded to first-generation (or sedating) antihistamines. The difficulties inherent to research for drug development increase considerably when the pediatric age range is involved. The use of any medication in this age group must adhere to the strictest safety criteria, and must offer the maximum guarantees of effi cacy. For this reason, detailed knowledge of the best scientific evidence available in relation to these aspects is essential for warranting drug use. The first-generation antihistamines have never been adequately studied for pediatric age groups, though they are still widely used in application to such patients. In contrast, studies in children have been made with the second-generation antihistamines, allowing us to know their safety profile, and such medicines are available at pediatric dosages that have been well documented from the pharmacological perspective. The present review affords an update to our most recent knowledge on antihistamine use in children, based on the best scientific evidence available

    Basophil Activation Test Utility as a Diagnostic Tool in LTP Allergy

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    Plant-food allergy is an increasing problem, with nonspecific lipid transfer proteins (nsLTPs) triggering mild/severe reactions. Pru p 3 is the major sensitizer in LTP food allergy (FA). However, in vivo and in vitro diagnosis is hampered by the need for differentiating between asymptomatic sensitization and allergy with clinical relevance. The basophil activation test (BAT) is an ex vivo method able to identify specific IgE related to the allergic response. Thus, we aimed to establish the value of BAT in a precise diagnosis of LTP-allergic patients. Ninety-two individuals with peach allergy sensitized to LTP, Pru p 3, were finally included, and 40.2% of them had symptoms to peanut (n = 37). In addition, 16 healthy subjects were recruited. BAT was performed with Pru p 3 and Ara h 9 (peanut LTP) at seven ten-fold concentrations, and was evaluated by flow cytometry, measuring the percentage of CD63 (%CD63+) and CD203c (%CD203chigh) cells, basophil allergen threshold sensitivity (CD-Sens), and area under the dose–response curve (AUC). Significant changes in BAT parameters (%CD63+ and %CD203chigh) were found between the controls and patients. However, comparisons for %CD63+, %CD203chigh, AUC, and CD-Sens showed similar levels among patients with different symptoms. An optimal cut-off was established from ROC curves, showing a significant positive percentage of BAT in patients compared to controls and great values of sensitivity (>87.5%) and specificity (>85%). In addition, BAT showed differences in LTP-allergic patients tolerant to peanut using its corresponding LTP, Ara h 9. BAT can be used as a potential diagnostic tool for identifying LTP allergy and for differentiating peanut tolerance, although neither reactivity nor sensitivity can distinguish the severity of the clinical symptoms.Partial funding for open access charge: Universidad de Málaga. This research was funded by grants from the “Instituto de Salud Carlos III” (ISCIII) of the Ministry of Economy and Competitiveness: PI17/01318, PI18/00288, PI21/00346, AC18/00031; RETICS ARADyAL (RD16/0006/0001, RD16/0006/0007); Sara Borrell (CD20/00085) Program; RICORS (RD21/0002/0008, RD21/0002/0058); and Next Generation EU funds. Andalusian Regional Ministry of Health (PE-0039-2018, RH-0085-2020, and PI-0099-2020), Senior Clinical Researcher Program (B-0005-2019), and Nicolas Monardes Program (RC-0004-2021). Roche Pharma S.A. “Stop Fuga de Cerebros” Program (SFC-0002-2020). Grants were co-funded by the European Regional Development Fund (ERDF). “Una manera de hacer Europa” “Andalucía se mueve con Europa”

    Total synthesis of entecavir

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    Entecavir (BMS-200475) was synthesized from 4-trimethylsilyl-3-butyn-2-one and acrolein. The key features of its preparation are: (i) a stereoselective boron-aldol reaction to afford the acyclic carbon skeleton of the methylenecylopentane moiety; (ii) its cyclization by a Cp2TiCl-catalyzed intramolecular radical addition of an epoxide to an alkyne; and (iii) the coupling with a purine derivative by a Mitsunobu reaction
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