1,989 research outputs found

    Vulnerability Factors and Pathways Leading to Underage Entry into Sex Work in two Mexican-US Border Cities

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    The current wave of interest in human trafficking and the commercial sexual exploitation of children has exposed a lack of knowledge about the vulnerabilities leading to underage entry into sex work. This knowledge is necessary for the development of effective prevention programs to identify girls who are most at-risk, especially in Latin America, a region that is believed to be a large source of persons moved across international borders for the purposes of sexual and labor exploitation. The objective of this study was to explore and increase understanding of the vulnerability factors and pathways leading to underage entry into sex work experienced by women currently engaging in sex work in two cities on the northern border of Mexico. From August 2013 to October 2014, 20 female sex workers (FSWs) with a history of entry into sex work prior to age 18 were recruited for in-depth interviews from a larger time-location sample of female sex workers (FSWs) participating in a quantitative survey in Tijuana and Ciudad Juarez. The median age of entry into sex work was 14 (range 10-17); 12/21 participants reported being forced into sex work and, of these, 7 were transported to another city where they began engaging in sex work. Family dysfunction (e.g., domestic violence between parents, parent drug use, neglect, etc.), sexual and physical abuse, and teen pregnancy were among the key themes that emerged as vulnerabilities to underage entry into sex work. Women’s narratives clearly illustrated that the vulnerabilities and pathways leading to underage entry are manifold, complex, and often intersect with each other. Our findings begin to lay the groundwork for understanding the potential vulnerabilities and pathways leading to underage entry into sex, and may have relevance to Latin America in general. This study also provides a foundation for further research to explore what may mitigate these vulnerabilities as well as creating evidence-based interventions to prevent commercial sexual exploitation of minors in the region

    Patients with obstructive sleep apnea can favor the predisposing factors of periodontitis by the presence of P. melaninogenica and C. albicans, increasing the severity of the periodontal disease

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    Q2Q2Pacientes con PeriodontitisPacientes con Apnea obstructiva del sueñoObjective: The aim of this study was to analyze the cultivable oral microbiota of patients with obstructive sleep apnea (OSA) and its association with the periodontal condition. Methods: The epidemiology profile of patients and their clinical oral characteristics were determined. The microbiota was collected from saliva, subgingival plaque, and gingival sulcus of 93 patients classified into four groups according to the periodontal and clinical diagnosis: Group 1 (n = 25), healthy patients; Group 2 (n = 17), patients with periodontitis and without OSA; Group 3 (n = 19), patients with OSA and without periodontitis; and Group 4 (n = 32), patients with periodontitis and OSA. Microbiological samples were cultured, classified, characterized macroscopically and microscopically, and identified by MALDI-TOF-MS. The distribution of complexes and categories of microorganisms and correlations were established for inter- and intra-group of patients and statistically evaluated using the Spearman r test (p-value <0.5) and a multidimensional grouping analysis. Result: There was no evidence between the severity of OSA and periodontitis (p = 0.2813). However, there is a relationship between the stage of periodontitis and OSA (p = 0.0157), with stage III periodontitis being the one with the highest presence in patients with severe OSA (prevalence of 75%; p = 0.0157), with more cases in men. The greatest distribution of the complexes and categories was found in oral samples of patients with periodontitis and OSA (Group 4 P-OSA); even Candida spp. were more prevalent in these patients. Periodontitis and OSA are associated with comorbidities and oral conditions, and the microorganisms of the orange and red complexes participate in this association. The formation of the dysbiotic biofilm was mainly related to the presence of these complexes in association with Candida spp. Conclusion: Periodontopathogenic bacteria of the orange complex, such as Prevotella melaninogenica, and the yeast Candida albicans, altered the cultivable oral microbiota of patients with periodontitis and OSA in terms of diversity, possibly increasing the severity of periodontal disease. The link between yeasts and periodontopathogenic bacteria could help explain why people with severe OSA have such a high risk of stage III periodontitis. Antimicrobial approaches for treating periodontitis in individuals with OSA could be investigated in vitro using polymicrobial biofilms, according to our findings.https://orcid.org/0000-0003-0006-7822https://orcid.org/0000-0003-2528-9632https://orcid.org/0000-0002-1387-1935https://orcid.org/0000-0003-1011-4450https://orcid.org/0000-0002-4069-4719https://orcid.org/0000-0001-5576-9341https://orcid.org/0000-0002-9884-9242https://orcid.org/0000-0003-1803-9141https://orcid.org/0000-0003-1302-5429Revista Internacional - IndexadaA1N

    Mutator/Hypermutable Fetal/Juvenile Metakaryotic Stem Cells and Human Colorectal Carcinogenesis

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    Adult age-specific colorectal cancer incidence rates increase exponentially from maturity, reach a maximum, then decline in extreme old age. Armitage and Doll (1) postulated that the exponential increase resulted from “n” mutations occurring throughout adult life in normal “cells at risk” that initiated the growth of a preneoplastic colony in which subsequent “m” mutations promoted one of the preneoplastic “cells at risk” to form a lethal neoplasia. We have reported cytologic evidence that these “cells at risk” are fetal/juvenile organogenic, then preneoplastic metakaryotic stem cells. Metakaryotic cells display stem-like behaviors of both symmetric and asymmetric nuclear divisions and peculiarities such as bell shaped nuclei and amitotic nuclear fission that distinguish them from embryonic, eukaryotic stem cells. Analyses of mutant colony sizes and numbers in adult lung epithelia supported the inferences that the metakaryotic organogenic stem cells are constitutively mutator/hypermutable and that their contributions to cancer initiation are limited to the fetal/juvenile period. We have amended the two-stage model of Armitage and Doll and incorporated these several inferences in a computer program CancerFit v.5.0. We compared the expectations of the amended model to adult (15–104 years) age-specific colon cancer rates for European-American males born 1890–99 and observed remarkable concordance. When estimates of normal colonic fetal/juvenile APC and OAT gene mutation rates (∼2–5 × 10[superscript −5] per stem cell doubling) and preneoplastic colonic gene loss rates (∼8 × 10[superscript −3]) were applied, the model was in accordance only for the values of n = 2 and m = 4 or 5.United Therapeutics Corporatio

    Neuropathic Pain in Dogs and Cats: Current Evaluation and Treatment Perspectives: Review

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    Abstract: During the past decade, the number of scientific papers on the recognition and multimodal management of pain in small animals increased exponentially. However, the variable of neuropathic pain, or adaptive disorder, has not yet been characterized completely. Its genesis is related to several diseases and injuries of the nervous system that change the neuroanatomical structures that participate in pain processing. Finding novel neurobiological mechanisms and the development of techniques for diagnosis and treatment in Human Medicine, are opening great opportunities for research and the understanding of neuropathic pain in pets

    The STRIPES Trial - Support to Rural India's Public Education System

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    Background Performance of primary school students in India lags far below government expectations, and major disparity exists between rural and urban areas. The Naandi Foundation has designed and implemented a programme using community members to deliver after-school academic support for children in over 1,100 schools in five Indian states. Assessments to date suggest that it might have a substantial effect. This trial aims to evaluate the impact of this programme in villages of rural Andhra Pradesh and will compare test scores for children in three arms: a control and two intervention arms. In both intervention arms additional after-school instruction and learning materials will be offered to all eligible children and in one arm girls will also receive an additional 'kit' with a uniform and clothes. Methods/Design The trial is a cluster-randomised controlled trial conducted in conjunction with the CHAMPION trial. In the CHAMPION trial 464 villages were randomised so that half receive health interventions aiming to reduce neonatal mortality. STRIPES will be introduced in those CHAMPION villages which have a public primary school attended by at least 15 students at the time of a baseline test in 2008. 214 villages of the 464 were found to fulfil above criteria, 107 belonging to the control and 107 to the intervention arm of the CHAMPION trial. These latter 107 villages will serve as control villages in the STRIPES trial. A further randomisation will be carried out within the 107 STRIPES intervention villages allocating half to receive an additional kit for girls on the top of the instruction and learning materials. The primary outcome of the trial is a composite maths and language test score. Discussion The study is designed to measure (i) whether the educational intervention affects the exam score of children compared to the control arm, (ii) if the exam scores of girls who receive the additional kit are different from those of girls living in the other STRIPES intervention arm. One of the goals of the STRIPES trial is to provide benefit to the controls of the CHAMPION trial. We will also conduct a cost-benefit analysis in which we calculate the programme cost for 0.1 standard deviation improvement for both intervention arms

    Measurement of the cross-section and charge asymmetry of WW bosons produced in proton-proton collisions at s=8\sqrt{s}=8 TeV with the ATLAS detector

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    This paper presents measurements of the W+μ+νW^+ \rightarrow \mu^+\nu and WμνW^- \rightarrow \mu^-\nu cross-sections and the associated charge asymmetry as a function of the absolute pseudorapidity of the decay muon. The data were collected in proton--proton collisions at a centre-of-mass energy of 8 TeV with the ATLAS experiment at the LHC and correspond to a total integrated luminosity of 20.2~\mbox{fb^{-1}}. The precision of the cross-section measurements varies between 0.8% to 1.5% as a function of the pseudorapidity, excluding the 1.9% uncertainty on the integrated luminosity. The charge asymmetry is measured with an uncertainty between 0.002 and 0.003. The results are compared with predictions based on next-to-next-to-leading-order calculations with various parton distribution functions and have the sensitivity to discriminate between them.Comment: 38 pages in total, author list starting page 22, 5 figures, 4 tables, submitted to EPJC. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-13

    Search for chargino-neutralino production with mass splittings near the electroweak scale in three-lepton final states in √s=13 TeV pp collisions with the ATLAS detector

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    A search for supersymmetry through the pair production of electroweakinos with mass splittings near the electroweak scale and decaying via on-shell W and Z bosons is presented for a three-lepton final state. The analyzed proton-proton collision data taken at a center-of-mass energy of √s=13  TeV were collected between 2015 and 2018 by the ATLAS experiment at the Large Hadron Collider, corresponding to an integrated luminosity of 139  fb−1. A search, emulating the recursive jigsaw reconstruction technique with easily reproducible laboratory-frame variables, is performed. The two excesses observed in the 2015–2016 data recursive jigsaw analysis in the low-mass three-lepton phase space are reproduced. Results with the full data set are in agreement with the Standard Model expectations. They are interpreted to set exclusion limits at the 95% confidence level on simplified models of chargino-neutralino pair production for masses up to 345 GeV

    On the interaction of vortices with mixing layers

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    We describe the perturbations introduced by two counter-rotating vortices - in a two-dimensional configuration - or by a vortex ring - in an axisymmetric configuration - to the mixing layer between two counterflowing gaseous fuel and air streams of the same density. The analysis is confined to the near stagnation point region, where the strain rate of the unperturbed velocity field, A0, is uniform. We restrict our attention to cases where the typical distance 2r0 between the vortices - or the characteristic vortex ring radius r0 - is large compared to both the thickness, δv, of the vorticity core and the thickness, δm∼(ν/A0)1/2, of the mixing layer. In addition, we consider that the ratio, Γ/ν, of the vortex circulation, Γ, to the kinematic viscosity, ν, is large compared to unity. Then, during the interaction time, A0,-1, the viscous and diffusion effects are confined to the thin vorticity core and the thin mixing layer, which, when seen with the scale r0, appears as a passive interface between the two counterflowing streams when they have the same density. In this case, the analysis provides a simple procedure to describe the displacement and distortion of the interface, as well as the time evolution of the strain rate imposed on the mixing layer, which are needed to calculate the inner structure of the reacting mixing layer as well as the conditions for diffusion flame extinction and edge-flame propagation along the mixing layer. Although in the reacting case variable density effects due to heat release play an important role inside the mixing layer, in this paper the analysis of the inner structure is carried out using the constant density model, which provides good qualitative understanding of the mixing layer response

    Acceso a pruebas complementarias para el diagnóstico de enfermedades infecciosas en las consultas de pediatría de atención primaria

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    Introducción En los procesos infecciosos la realización de pruebas complementarias puede aumentar la precisión diagnóstica, la adecuación de los tratamientos, así como dar a conocer la epidemiología y patrón de resistencias bacterianas de la comunidad. El Grupo de Patología Infecciosa de la Asociación Española de Pediatría de Atención Primaria (GPI-AEPap) diseñó este estudio para conocer la accesibilidad a pruebas complementarias (PC) y sus resultados que tienen los pediatras que trabajan en atención primaria en el ámbito de la salud pública. Material y métodos Estudio observacional transversal descriptivo de ámbito nacional, a través de una encuesta de cumplimentación voluntaria, distribuida on line a todos los socios de AEPap y a los suscriptores de la lista de distribución PEDIAP entre los meses de abril y mayo de 2017. Resultados Se obtienen 517 respuestas. Se analizan datos del entorno profesional, así como los referidos a la solicitud de pruebas complementarias básicas (hemograma, bioquímica, sistemático de orina), utilización de Test Rápido Detección de Antígeno para Streptococo grupo A (TRDA), sobre cultivos bacterianos, serologías, pruebas diagnósticas de tosferina y tuberculosis (Mantoux) y pruebas de imagen. Conclusiones Hay variabilidad entre CCAA y áreas asistenciales. Se detectan claras áreas de mejora en la accesibilidad a diferentes PC, tiempo de recogida y envío de muestras, demora en la recepción, en los resultados y en tiempos de espera para pruebas de imagen no urgentes. Esto interfiere en la capacidad de intervención y resolución del pediatra de atención primaria. Introduction: The performing of complementary tests in infectious processes can increase the diagnostic precision, the adequacy of treatments, as well as determining the epidemiology and pattern of bacterial resistance of the community. The Infectious Pathology Group of the Spanish Association of Primary Care Paediatrics (GPI-AEPap) has designed this study in order to determine the availability of complementary tests (CT) for paediatricians working in Primary Care of the public health system as well as their results. Material and methods: Observational cross-sectional descriptive national study was carried out using a voluntary self-report questionnaire distributed online to all AEPap members and to the subscribers of the PEDIAP distribution list between the months of April and May 2017. Results: A total of 517 responses were obtained. An analysis was made of the data from the professional environment, as well as those related to the request for basic supplementary tests (blood count, biochemistry, and routine urine analysis), the use of Rapid Antigen Detection Test for group A Streptococcus, bacterial cultures, serology, diagnostic tests for pertussis and tuberculosis (Mantoux), as well as imaging tests. Conclusions: There is variability between Autonomous Communities and healthcare areas. Areas for improvement were found in the accessibility to different CT, collection time and sending of samples, delay in receiving results, as well as waiting times for non-urgent imaging tests. These affect the intervention and resolution capacity of the primary care paediatrician

    Search for new phenomena in final states with an energetic jet and large missing transverse momentum in pp collisions at √ s = 8 TeV with the ATLAS detector

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    Results of a search for new phenomena in final states with an energetic jet and large missing transverse momentum are reported. The search uses 20.3 fb−1 of √ s = 8 TeV data collected in 2012 with the ATLAS detector at the LHC. Events are required to have at least one jet with pT > 120 GeV and no leptons. Nine signal regions are considered with increasing missing transverse momentum requirements between Emiss T > 150 GeV and Emiss T > 700 GeV. Good agreement is observed between the number of events in data and Standard Model expectations. The results are translated into exclusion limits on models with either large extra spatial dimensions, pair production of weakly interacting dark matter candidates, or production of very light gravitinos in a gauge-mediated supersymmetric model. In addition, limits on the production of an invisibly decaying Higgs-like boson leading to similar topologies in the final state are presente
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