A Validated HPLC-UV-ESI-IT-MS Method for the Quantification of Carnosol in Lepechinia mutica, a Medicinal Plant Endemic to Ecuador.

The diphenolic diterpene carnosol was isolated from several species of the family Lamiaceae, including Lepechinia mutica, a medicinal plant endemic to Ecuador. The compound has exhibited high antioxidant, anti-inflammatory, antimicrobial, neuroprotective, and antifungal properties, as well as promising cytotoxicity against prostate, breast, skin, leukemia, and human colon cancer cell lines. In this paper, we developed and validated a simple, accurate, and reliable analytical HPLC-UV-ESI-IT-MS method, carried out on a C18 column, which is potentially suitable to quantify carnosol in plant extracts. The procedure complied with the established ICH validation parameters of analytical range (linearity in the range of 0.19-5.64 µg/g dried leaves; REAVERGE = 4.9%; R2 = 0.99907), analysis repeatability (RSD = 2.8-3.6%), intermediate precision (RSD = 1.9-3.6%), accuracy (estimated as % carnosol recovery in the range of 81 to 108%), and robustness. Finally, the LOD (0.04 µg/mg) and LOQ (0.19 µg/mg) values of carnosol/dried leaves were determined. Using this validated method, the content of carnosol in L. mutica was estimated to be 0.81 ± 0.04 mg/g of dried leaves (0.081%).

Microwave-Assisted Extraction Optimization and Effect of Drying Temperature on Catechins, Procyanidins and Theobromine in Cocoa Beans.

Cocoa beans (Theobroma cacao L.) are an important source of polyphenols. Nevertheless, the content of these compounds is influenced by post-harvest processes. In this sense, the concentration of polyphenols can decrease by more than 50% during drying. In this study, the process of procyanidins extraction was optimized and the stability of catechins, procyanidins, and theobromine to different drying temperatures was evaluated. First, the effectiveness of methanol, ethanol, acetone, and water as extract solvents was determined. A Box-Behnken design and response surface methodology were used to optimize the Microwave-Assisted Extraction (MAE) process. The ratios of methanol-water, time, and temperature of extraction were selected as independent variables, whereas the concentration of procyanidins was used as a response variable. Concerning the drying, the samples were dried using five temperatures, and a sample freeze-dried was used as a control. The quantitative analyses were carried out by HPLC-DAD-ESI-IT-MS. The optimal MAE conditions were 67 °C, 56 min, and 73% methanol. Regarding the drying, the maximum contents of procyanidins were obtained at 40 °C. To our knowledge, this is the first time that the stability of dimers, trimers, and tetramers of procyanidins on drying temperature was evaluated. In conclusion, drying at 40 °C presented better results than the freeze-drying method.

Trapping of polycyclic aromatic hydrocarbons in vehicle exhaust using an in-tube extraction device for analysis by gas chromatography-barrier ionization discharge detection.

This work presents a methodology for polycyclic aromatic hydrocarbons (PAHs) trapping from vehicular emissions using an in-tube extraction device (IT-FEx). Trapping selectivity studies were conducted, evaluating the interaction profile between the aromatic compounds and the polymeric phase (composed of polydimethylsiloxane and internal to the IT-FEx devices), as in an aqueous equilibrium system (25 min of sampling), and as in gaseous dynamic phase (30 s of sampling), regarding a qualitative evaluation. The adsorption profiles were similar, with greater affinity for medium-sized PAHs (four aromatic rings) than for the smaller (one to three rings) and larger (five to six rings). The device was attached to a vehicle emission sampler to evaluate the qualitative emission of diesel-powered vehicles. Certain PAHs, such as phenanthrene, fluoranthene, benz[a]anthracene, chrysene, benzo[b]fluoranthene, and benzo[k]fluoranthene, were effectively trapped by the IT-FEx device and detected by the GC-BID analysis. Finally, it was possible to develop a process that combined the steps of sample preparation and instrumental analysis, using the IT-FEx device and applying it to the gaseous matrix in the dynamic phase; until then, little was elucidated regarding the use of this apparatus. This sampling device, combined with analysis by gas chromatography with a barrier ionization discharge detector (GC-BID), is a powerful tool for identifying many compounds from vehicular emissions and does not require solvents in sample preparation.

The role of IT capabilities, IT reconfiguration capability and innovativeness on organizational performance: evidence from the Brazilian public sector / Papel de las capacidades de TI, capacidad de reconfiguración de TI e innovación en el desempeño organizacional: evidencia del sector público brasileño / O papel das capacidades de TI, capacidade de reconfiguração de TI e inovatividade no desempenho organizacional: evidências do setor público brasileiro

Abstract The growing investments in information technology (IT) each year pushes public sector organizations to develop the ability to gather, integrate, and implement these resources to improve organizational processes. Public sector organizations have to be agile and flexible to meet society's dynamic demands. In this sense, IT management and creating an organizational environment facilitating innovation are crucial measures. These organizations must learn to cultivate IT capabilities and innovativeness to improve their performance and create public value. Thus, this study aims to identify the existing relationships between innovativeness, IT capabilities, IT reconfiguration capability, and organizational performance in the public sector. The research analyzed data from 254 Brazilian public organizations of the most diverse sizes and sectors using structural equation modeling (SEM). The results indicated that the ability to reconfigure IT must be listed among the organizations' IT capabilities. Also, the findings suggest that IT capabilities foster organizations' innovativeness, and IT capabilities and innovativeness positively impact the organizations' performance. The study contributes to knowledge of innovation and IT capabilities by testing theoretical propositions identified in the context of the private sector but insufficiently assessed in the public sector. Finally, the study points out ways for public managers to better prepare their institutions to face constantly changing environments.

Resumen En vista del creciente volumen de recursos invertidos anualmente en tecnología de la información, las organizaciones del sector público deben tener cada vez más la capacidad de reunir, integrar e implementar recursos de TI para satisfacer las necesidades de los procesos organizacionales. Además, a las organizaciones públicas se les exige cada vez más ser más ágiles y flexibles para poder atender las demandas dinámicas de las sociedades. En este sentido, las organizaciones públicas deben ser capaces de gestionar y aplicar adecuadamente los recursos informáticos de los que disponen, así como crear entornos organizativos que permitan y favorezcan el florecimiento de la innovación. Es decir, deben aprender a cultivar las capacidades de TI y la innovación, con el objetivo de cumplir mejor su misión y crear valor público. Así, el objetivo de este estudio es identificar las relaciones existentes entre la innovación, las capacidades de TI, la capacidad de reconfiguración de TI y el desempeño organizacional, en el contexto del sector público. Para ello, se analizaron datos de 254 organizaciones públicas brasileñas de los más diversos tamaños y sectores, utilizando un enfoque de ecuaciones estructurales (SEM). Los resultados indicaron que la capacidad de reconfigurar la TI debe figurar entre las capacidades de TI de las organizaciones públicas, así como que las capacidades de TI desempeñan un papel en el fomento de la innovación de las organizaciones y que ambas (capacidades de TI e innovación) tienen un impacto positivo en el desempeño de las organizaciones. Al contrastar proposiciones teóricas identificadas en el contexto del sector privado, pero insuficientemente evaluadas en el sector público, el estudio agrega un bloque en la construcción de conocimiento sobre la capacidad de innovación y las capacidades de TI, además de señalar caminos para los gestores públicos sobre cómo pueden hacer que sus instituciones estén mejor preparadas para enfrentar entornos en constante cambio.

Resumo Tendo em vista o crescente volume de recursos investidos em tecnologia da informação a cada ano, as organizações do setor público devem cada vez mais ter a capacidade de reunir, integrar e implementar recursos de TI, a fim de atender às necessidades dos processos organizacionais. Além disso, as organizações públicas são cada vez mais exigidas a serem mais ágeis e flexíveis para atender às demandas dinâmicas das sociedades. Nesse sentido, as organizações públicas devem ser capazes de administrar e aplicar adequadamente os recursos de TI de que dispõem, bem como criar ambientes organizacionais que permitam e estimulem o florescimento da inovação. Ou seja, devem aprender a cultivar as capacidades de TI e a inovação, com o objetivo de melhor cumprir sua missão e criar valor público. Assim, o objetivo deste estudo é identificar as relações existentes entre inovatividade, capacidades de TI, capacidade de reconfiguração de TI e desempenho organizacional, no contexto do setor público. Para tanto, dados de 254 organizações públicas brasileiras, dos mais diversos portes e setores, foram analisados por meio de uma abordagem de equações estruturais (SEM). Os resultados indicaram que a capacidade de reconfigurar TI deve ser listada entre as capacidades de TI das organizações públicas, bem como que as capacidades de TI desempenham um papel no fomento da inovação das organizações e que ambas (as capacidades de TI e a inovatividade) têm um impacto positivo no desempenho das organizações. Ao testar proposições teóricas identificadas no contexto do setor privado, mas insuficientemente avaliadas no setor público, o estudo acrescenta um bloqueio na construção do conhecimento sobre capacidade de inovação e capacidades de TI, além de apontar caminhos para gestores públicos sobre como eles podem tornar suas instituições mais bem preparadas para enfrentar ambientes em constante mudança.

Online intervention to prevent postnatal depression and anxiety in Chilean new mothers: Protocol for a feasibility trial.

Symptoms of postpartum depression and anxiety in new mothers are prevalent and negatively impact maternal emotional wellbeing and infant development. Barriers to accessing treatment prevent women from receiving mental health care, a situation that has worsened due to the COVID-19 pandemic. mHealth interventions hold the potential to support women during the transition to parenthood despite these barriers and to promote the use of preventive interventions. This study uses a mixed methods design to assess the feasibility and preliminary effectiveness of a psychoeducational, guided mHealth intervention to prevent postpartum mental health difficulties in women who receive care in primary health centers in Chile. The study will contribute to evidence-based research on the effectiveness of mHealth interventions for new mothers from an understudied cultural background. The findings will also enable the development of a larger randomized controlled trial to assess the effectiveness of the intervention, which, if effective, could significantly contribute to the emotional wellbeing of women and their families.

IgG from Adult Atopic Dermatitis (AD) Patients Induces Nonatopic Neonatal Thymic Gamma-Delta T Cells (γδT) to Acquire IL-22/IL-17 Secretion Profile with Skin-Homing Properties and Epigenetic Implications Mediated by miRNA.

γδT cells mature in the human thymus, and mainly produce IL-17A or IFN-γ, but can also produce IL-22 and modulate a variety of immune responses. Here, we aimed to evaluate whether IgG from AD patients (AD IgG) can functionally modulate thymic nonatopic γδT cells. Thymic tissues were obtained from 12 infants who had not had an atopic history. Thymocytes were cultured in mock condition, or in the presence of either AD IgG or therapeutic intravenous IgG (IVIg). Following these treatments, intracellular cytokine production, phenotype, and microRNA expression profiles were investigated. AD IgG could downregulate α4ß7, upregulate CLA, and induce the production of IFN-γ, IL-17, and IL-22 in γδT cells. Although both AD IgG and IVIg could directly interact with γδT cell membranes, AD IgG could reduce γδT cell apoptosis. AD IgG could upregulate nine miRNAs compared to IVIg, and six when compared to the mock condition. In parallel, some miRNAs were downregulated. Target gene prediction and functional analysis indicated that some target genes were enriched in the negative regulation of cellular transcription. This study shows that AD IgG influences the production of IL-17 and IL-22 by intrathymic nonatopic γδT cells, and demonstrates epigenetic implications mediated by miRNAs.

Using design science research to propose an IT governance model for higher education institutions.

The increasing use of, and dependence on, Information Technology (IT) to support operational teaching, research, and management activities in Higher Education Institutions (HEI)-mainly due to their multi-unit organizational structure-have evidenced the need of encouraging managers to focus more on IT Governance (ITG) effectiveness, which has been an issue for many of these institutions. In this sense, we aim to develop a specific ITG model for Higher Education Institutions, by following the methodological principles of Design Science Research (DSR). The model was developed based on a robust theoretical basis that took into account different approaches substantiated by both the alignment of good practices and ITG focus areas as well as addressing the current ITG context of the Brazilian higher education institutions. The validation of the ITG model was based on its presentation to members of the IT Steering Committee of a Brazilian HEI, who confirmed its usefulness and applicability.

Low-Cost Endoscope Camera System for Neurosurgical Cadaveric Laboratory Dissections.

OBJECTIVE: Many training institutions in low-income countries do not have the resources to purchase and maintain a clinical-grade endoscopy tower dedicated to the laboratory. This project aimed to create a low-cost endoscope camera system using online-sourced materials to allow the operators to practice endoscopic surgical techniques in a cadaver laboratory setting. METHODS: A low-cost endoscope system was created using a 34MP camera with recording capabilities and direct streaming to high-definition multimedia interface in full high resolution, with an adjustable focal length coupler and a light-emitting diode light source. The system cost was $443, as the endoscope and the monitor were already in the laboratory. RESULTS: The system was successfully employed to practice endoscopic dissections in 3 cadaveric specimens with good visualization of relevant structures. CONCLUSIONS: This article demonstrated how to produce a low-cost endoscope camera system for laboratory training in neuroendoscopy.

Epidermal Growth Factor in Aesthetics and Regenerative Medicine: Systematic Review.

INTRODUCTION: Epidermal Growth Factor (rhEGF) is a promising skin antiaging agent that successfully promotes skin wound repair, and it has been investigated in the past decade for these purposes. However, there are no updated systematic reviews, in English or English, that support the efficacy of rhEGF as a regenerative skin treatment or systematic reviews that compile the uses of rhEGF as facial aesthetic therapy and regenerative medicine. AIM: To describe the current state of facial aesthetic and regenerative medicine treatments in which rhEGF has been effectively used. MATERIALS AND METHODS: An exhaustive search was carried out in "Medline" (via "PubMed"), "Cochrane," "Bireme" through the Virtual Health Library (VHL), "Elsevier" via "Science Direct," "Springer," "SciELo," "ResearchGate," and Google Scholar. Studies related to the use of rhEGF in addressing skin disorders or skin aging are included. RESULTS: Overall, 49 articles were found, which described the use of rhEGF for skin regeneration and restructuring. Efficacy in the regeneration of skin wounds was verified through the intradermal and topical application of formulations with rhEGF. Most clinical trials in aesthetics point to an effective inversion of skin aging. However, uncontrolled or randomized trials abound, so that does not represent enough evidence to establish its efficiency. There are transient adverse effects for both cases. CONCLUSION: The rhEGF considers an effective therapeutic alternative for patients with recalcitrant skin wounds and skin aging, as it is a potent and specific mitogenic factor for the skin.

Profissionais de TI: Um estudo sobre as forças pessoais/de caráter / IT Professionals: A study of character strengths

RESUMO As forças pessoais/de caráter são as características psicológicas positivas que se refletem nos pensamentos, sentimentos e comportamentos. Esse artigo objetivou descrever as forças pessoais/de caráter mais prevalentes em 60 profissionais de Tecnologia da Informação e comparar quatro grupos distintos nos cargos de Atendimento e Suporte Técnico, Desenvolvedor de Software, Gestor e Líder Técnico em um Parque Tecnológico do Sul do Brasil. Estudo com delineamento quantitativo, descritivo, comparativo e transversal com aplicação online de um Questionário Sócio Demográfico e Laboral e da Escala das Forças de Caráter. As forças mais prevalentes são a imparcialidade, a curiosidade, a bondade, o pensamento crítico e o amor ao aprendizado. As forças com menor prevalência são a apreciação do belo, a espiritualidade, o perdão, a inteligência social e a sensatez. As implicações práticas sugerem que as características psicológicas positivas sejam fortalecidas em processos de desenvolvimento pessoal e profissional dos trabalhadores de TI no âmbito organizacional.

ABSTRACT Character strengths are the positive psychological characteristics that are reflected in thoughts, feelings and behaviors. This article aimed to describe the most prevalent character strengths in 60 Information Technology (IT) professionals and compare four distinct groups in the positions of Service and Technical Support, Software Developer, Manager and Technical Leader in a Technology Park in the Southern Brazil. Study with quantitative, descriptive, comparative and cross-sectional design with online application of a Socio-Demographic and Labor Questionnaire and the Scale of Character Strengths. The most prevalent strengths are impartiality, curiosity, kindness, critical thinking and love of learning. The least prevalent character strengths are appreciation of beauty, spirituality, forgiveness, social intelligence and wisdom. Practical implications suggest that positive psychological characteristics should be strengthened in the personal and professional development of IT workers at organizations.

Myorelaxation, respiratory depression and electrocardiographic changes caused by the administration of extract of açai (Euterpe oleracea Mart.) stone in rats.

The biological and pharmacological properties of natural polyphenols of the extract of Euterpe oleracea stone (EEOS) are associated with the central nervous system (CNS). To investigate the sedative and myorelaxant activity of EEOS in vivo, this study aimed to present the myorelaxant and sedative effects of EEOS in Wistar rats using spontaneous locomotor activity and motor electrophysiology. A total of 108 animals were used in the following experiments: a) behavioral tests (n = 27); b) electromyographic recordings of skeletal muscle (n = 27); c) respiratory muscle activity recordings (n = 27); d) cardiac muscle activity recordings (n = 27). The behavioral characteristics were measured according to the latency time of onset, the transient loss of posture reflex and maximum muscle relaxation. Electrodes were implanted in the gastrocnemius muscle and in the tenth intercostal space for electromyographic (EMG) signal capture to record muscle contraction, and in the D2 lead for electrocardiogram acquisition. After using the 300 mg/kg dose of EEOS intraperitoneally, a myorelaxant activity exhibited a lower frequency of contractility with an amplitude pattern of low and short duration at gastrocnemius muscle and intercostal muscle, which clearly describes a myorelaxant activity and changes in cardiac activity. The present report is so far the first study to demonstrate the myorelaxant activity of this extract, indicating an alternative route for açai stone valorization and its application in pharmaceutical fields.

The construction of high-magnification homemade lenses for a simple microscope: an easy "DIY" tool for biological and interdisciplinary education.

The rise of microscopy in the seventeenth century allowed scientists to discover a new world of microorganisms and achieve great physiological advances. One of the first microscopes of the epoch was Antonie van Leeuwenhoek's microscope, a deceptively simple device that contains a single ball lens housed in a metal plate allowing the observation of samples at up to ×250 magnification. Such magnification was much greater than that achieved by rudimentary compound microscopes of the era, allowing for the discovery of microscopic, single-celled life, an achievement that marked the study of biology up to the nineteenth century. Since Leeuwenhoek's design uses a single ball lens, it is possible to fabricate variations for educational activities in physics and biology university and high school classrooms. A fundamental problem, however, with home-built microscopes is that it is difficult to work with glass. We developed a simple protocol to make ball lenses of glass and gelatin with high magnification that can be done in a university/high school classroom, and we designed an optimized support for focusing and taking photographs with a smartphone. The protocol details a simple, easily accessible, low-cost, and effective tool for the observation of microscopic samples, possible to perform anywhere without the need for a laboratory or complex tools. Our protocol has been implemented in classrooms in Chile to a favorable reception.

A low-cost platform suitable for sequencing-based recovery of natural variation in understudied plants.

Genetic characterization of wild and cultivated plants provides valuable knowledge for conservation and agriculture. DNA sequencing technologies are improving, and costs are dropping. Yet analysis of many species is hindered because they grow in regions that lack infrastructure for advanced molecular biology. The authors developed and adapted low-cost methods that address these issues. Tissue was collected and stored in silica gel, avoiding the need for liquid nitrogen and freezers. The authors optimized low-cost, homemade DNA extraction to increase yields, reduce costs and produce DNA suitable for next-generation sequencing. The authors describe how to build a gel documentation system for DNA quantification. As a proof of principle, the authors used these methods to evaluate wild Berberis darwinii, native to Southern Chile.

Sisprad: software for radiological protection management in a hospital environment / Sisprad: software para gestión de protección radiológica en entorno hospitalario / Sisprad: software para gestão da proteção radiológica em ambiente hospitalar

ABSTRACT Objective: to describe the software for the management of radiological protection, SisPRad, and its construction process, as well as to analyze its implementation and use in a radiodiagnosis service. Method: a methodological and quasi-experimental research study carried out between November 2016 and October 2019. The study population consisted of the professionals who make up the Radiological Protection Committee of the service. The model chosen for software engineering was the cascade model. In the implementation phase, an evaluation and analysis of the usability of the software was carried out. Results: the software for radiological protection management presents the structure of the technology and its functionalities. The usability evaluation showed that SisPRad is a tool that will assist the multi-professional and interdisciplinary team of the hospital radiology service in the management of radiological protection. The computerization of the systems and the integration of the sectors that need shared data in the work routines enhance the management of hospital radiological protection for the multi-professional team. The technology was positively evaluated by the multi-professional team working in the hospital radiodiagnosis service. SisPRad generated registration n.. 512019002125-8 by the National Institute of Industrial Property. Conclusion: this tool was developed aiming at the safety of the professionals working in the radiodiagnosis service and of its users, in addition to enabling the constant improvement of the tool, and it can be adapted in other institutions.

RESUMEN Objetivo: describir el software para la gestión de protección radiológica, SisPRad, su proceso de construcción y analizar su implementación y uso en un servicio de radiodiagnóstico. Método: investigación metodológica y cuasiexperimental realizada entre noviembre de 2016 y octubre de 2019. La población de estudio estuvo constituida por los profesionales que integran el Comité de Protección Radiológica del servicio. Para la ingeniería de software, se eligió el modelo en cascada. En la etapa de implementación se realizó la evaluación y el análisis de usabilidad del software. Resultados: el software de gestión de protección radiológica presenta la estructura de la tecnología y sus funcionalidades. La evaluación de usabilidad mostró que SisPRad es una herramienta que ayudará al equipo multidisciplinario e interdisciplinario del servicio de radiología del hospital en la gestión de la protección radiológica. La informatización de sistemas y la integración de sectores que requieren datos en común en las rutinas de trabajo potencian la gestión de la protección radiológica hospitalaria del equipo multidisciplinario. La tecnología fue valorada positivamente por el equipo multiprofesional que cumple sus funciones en el servicio de radiodiagnóstico del hospital. SisPRad generó el registro 512019002125-8 en el Instituto Nacional de Propiedad Industrial. Conclusión: esta herramienta fue desarrollada con el objetivo de promover la seguridad de los profesionales que trabajan en el servicio de radiodiagnóstico y de sus usuarios, además de permitir la mejora constante de la herramienta, que puede ser adaptada a otras instituciones.

RESUMO Objetivo: descrever o software para gestão da proteção radiológica, SisPRad, seu processo de construção e analisar sua implantação e utilização em um serviço de radiodiagnóstico. Método: pesquisa metodológica e quase-experimental realizada entre novembro de 2016 e outubro de 2019. A população do estudo foi constituída pelos profissionais que compõem o Comitê de Proteção Radiológica do serviço. O modelo escolhido para a engenharia do software foi o modelo em cascata. Na fase de implantação foi realizada avaliação e análise da usabilidade do software. Resultados: o software de gestão para proteção radiológica apresenta a estrutura da tecnologia e suas funcionalidades. A avaliação da usabilidade evidenciou que o SisPRad é uma ferramenta que irá auxiliar a equipe multiprofissional e interdisciplinar do serviço de radiologia hospitalar na gestão da proteção radiológica. A informatização dos sistemas e a integração dos setores que necessitam de dados em comum nas rotinas de trabalho potencializam a gestão da proteção radiológica hospitalar para a equipe multiprofissional. A tecnologia foi avaliada positivamente pela equipe multiprofissional atuante no serviço de radiodiagnóstico hospitalar. O SisPRad gerou o registro 512019002125-8 pelo Instituto Nacional de Propriedade Industrial. Conclusão: essa ferramenta foi desenvolvida visando a segurança dos profissionais atuantes no serviço de radiodiagnóstico e seus usuários, além de possibilitar a melhora da ferramenta constantemente, podendo ser adaptada em outras instituições.

Perceptions on Connecting Respite Care Volunteers and Caregivers.

The most common requirement for informal caregivers is to experience a respite or temporary break from their caregiving routine. Some initiatives have been undertaken to provide respite care through volunteer providers. We report on a qualitative study carried out in Santiago, Chile, to learn about the willingness of potential volunteers to provide respite care for bedridden older persons, as well as their willingness to use information and communication technologies (ICT) to connect to caregivers in a low-income neighbourhood within their own geographic district. A trustworthy institution that mediates the volunteer-caregiver relationship is considered to be important by potential volunteers. Potential volunteers were found to be willing to use ICT to provide respite care, sharing basic information about themselves. However, they were also aware of the digital skill gap that may exist between them and the caregivers and were distrustful of unknown websites that could connect them to care recipients.

New Insights into Asthma Inflammation: Focus on iNKT, MAIT, and γδT Cells.

Asthma is a chronic immunological disease affecting all age groups, but often starting in childhood. Although it has long been ascribed to a single pathology, recent studies have highlighted its heterogeneity due to the potential involvement of various pathogenic mechanisms. Here, we present our current understanding of the role of innate-like T (ILT) cells in asthma pathogenesis. These cells constitute a specific family mainly comprising γδT, invariant natural killer (iNKT) and mucosal-associated invariant (MAIT) T cells. They all share the ability to massively secrete a wide range of cytokines in a T-cell receptor (TCR)-dependent or -independent manner. ILT cells are prevalent in mucosal tissues, including airways, where their innate and adaptive immune functions consist primarily in protecting tissue integrity. However, ILT cells may also have detrimental effects leading to asthma symptoms. The immune mechanisms through which this pathogenic effect occurs will be discussed in this overview.

Contribuições técnicas e socioculturais da prevenção quaternária para a atenção primária à saúde: caminhos e desafios / Technical and socio-cultural contributions of quaternary prevention for primary health care: paths and challenges / Contribuciones técnicas y socioculturales de prevención cuaternaria para la atención primaria de salud: caminos y desafíos

Introdução: No contexto do Sistema Único de Saúde, o conceito da prevenção quaternária adentra timidamente os níveis de atenção à saúde, no entanto, sofre expansão significativa no âmbito da atenção primária à saúde. Objetivo: Identificar por meio da sistematização de evidências científicas, as contribuições técnicas e socioculturais da prevenção quaternária no âmbito da atenção primária à saúde no Brasil. Métodos: Trata-se de uma revisão integrativa de estudos presentes nas bases de dados científicas da Scientific Electronic Library Online, Biblioteca Virtual em Saúde, biblioteca virtual da Comissão de Aperfeiçoamento de Pessoal do Nível Superior e MEDLINE via PubMed com a utilização dos descritores "prevenção quaternária" e "atenção primária à saúde", em inglês e português. Resultados: O corpus de análise foi composto por 22 artigos, sendo que a produção científica sobre o tema se deu de forma mais intensa a partir do ano de 2015 e, em sua maioria, possuíam como abordagem metodológica ensaios teóricos. Dentre as contribuições técnicas destacaram-se a introdução do ensino da prevenção quaternária de modo continuado aos graduandos e profissionais; a construção de protocolos e documentos de amparo profissional; a utilização de modelos explicativos dinâmicos na socialização do quadro clínico; a conduta profissional com os usuários e as contribuições socioculturais envolvendo mudanças na percepção profissional e comunitária sobre o fenômeno saúde-doença, assim como o incentivo a práticas de desmedicalização sociocultural em relação à dor, incapacidade, desconforto, envelhecimento, nascimento e morte. Conclusão: Apesar do reconhecimento das potencialidades da prevenção quaternária, faz-se necessário fortalecer estratégias que possibilitem o desenvolvimento de políticas públicas para fomentar e gerenciar alianças estratégicas com tomadores de decisão, profissionais de saúde e cidadãos, para fomentar a redução de diagnósticos e tratamentos excessivos, contribuindo com a qualidade do cuidado.

Introduction: In the context of the Unified Health System, the concept of quaternary prevention shyly enters the levels of health care, however, undergoes significant expansion in the scope of primary health care. Objective: To identify, through the systematization of scientific evidence, the technical and socio-cultural contributions of quaternary prevention within the scope of primary health care in Brazil. Methods: This is an integrative review of studies present in the scientific databases of the Scientific Electronic Library Online, Regional Portal of the Virtual Health Library of the Latin American and Caribbean Center on Health Sciences Information of the Pan American Health Organization, virtual library of the Higher Education Personnel Improvement Commission, and MEDLINE through PubMed using the descriptors "quaternary prevention" and "primary health care", in English and Portuguese. Results: The corpus of analysis consisted of 22 articles, and the scientific production on the topic took place more intensively from the year 2015 and, for the most part, had theoretical essays as methodological approach. Among the technical contributions, we highlight the introduction of teaching on quaternary prevention in a continuous way to undergraduates and professionals; the construction of protocols and documents of professional support; the use of dynamic explanatory models in the socialization of the clinical picture and professional conduct with users and socio-cultural contributions involve changes in the professional and community perception about the phenomenon of illness and health conception, as well as the incentive to practices of socio-cultural demedicalization in relation to pain, disability, discomfort, aging, birth, and death. Conclusion: Despite the recognition of the potential of quaternary prevention, it is necessary to strengthen strategies that enable the development of public policies to foster and manage strategic alliances with decision makers, health professionals and citizens, to promote the reduction of excessive diagnoses and treatments, contributing to the quality of care.

Introducción: En el contexto del Sistema Único de Salud, el concepto de prevención cuaternaria entra tímidamente en los niveles de atención de salud, sin embargo, experimenta una expansión significativa en el alcance de la Atención Primaria de Salud. Objetivo: Identificar, a través de la sistematización de evidencia científica, las contribuciones técnicas y socioculturales de la prevención cuaternaria en el ámbito de la Atención Primaria de Salud en Brasil. Métodos: Esta es una revisión integradora de estudios presentes en las bases de datos científicas de la Biblioteca Electrónica Científica en línea, Portal Regional de la Biblioteca Virtual en Salud del Centro Latinoamericano y del Caribe de Información en Ciencias de la Salud de la Organización Panamericana de la Salud, biblioteca virtual de la Comisión de Mejoramiento del Personal de Educación Superior y MEDLINE a través de PubMed utilizando los descriptores de prevención cuaternaria y atención primaria de salud, en inglés y portugués. Resultados: El corpus de análisis estuvo conformado por 22 artículos, siendo la producción científica sobre el tema más intensiva desde 2015 y, en su mayor parte, tuvo ensayos teóricos como abordaje metodológico. Entre los aportes técnicos, destacamos la implantación de la docencia en prevención cuaternaria de forma continua a estudiantes de pregrado y profesionales; construcción de protocolos y documentos de apoyo profesional, uso de modelos explicativos dinámicos en la socialización del cuadro clínico y conducta profesional con los usuarios y los aportes socioculturales implican cambios en la percepción profesional y comunitaria sobre el fenómeno de la enfermedad y la concepción de la salud, así como el incentivo a prácticas de desmedicalización sociocultural en relación al dolor, discapacidad, malestar, envejecimiento, nacimiento y muerte. Conclusión: A pesar del reconocimiento del potencial de la prevención cuaternaria, es necesario fortalecer estrategias que permitan el desarrollo de políticas públicas para fomentar y gestionar alianzas estratégicas con los tomadores de decisiones, profesionales de la salud y ciudadanos, para promover la reducción de diagnósticos y tratamientos excesivos, contribuyendo a la calidad de la atención.

Polyphenolic profile by FIA/ESI/IT/MSn and antioxidant capacity of the ethanolic extract from the barks of Maytenus cajalbanica (Borhidi & O. Muñiz) Borhidi & O. Muñiz.

Medium and high polarity extracts from Maytenus species are known to contain polyphenolic compounds such as proanthocyanidins. The high polarity and structural complexity of these compounds make very difficult their isolation even by modern chromatographic techniques. Maytenus cajalbanica (Borhidi & O. Muñiz) Borhidi & O. Muñiz is endemic from Cuba. So far, there are reports neither of phytochemical work nor of biological evaluation of extracts from this subspecies. The goal of this work is to determine the polyphenolic profile and the antioxidant capacity of the ethanolic extract from the barks of Maytenus cajalbanica. FIA/ESI/IT/MSn analysis allowed the identification of 5 flavan-3-ol monomers, 33 proanthocyanidins, 2 free flavonoids and their respective glycosides as major compounds of the ethanolic extract, which showed a strong radical scavenging capacity and a significant ferric reduction power. FIA/ESI/IT/MSn technique led the rapid, effective and sensitive determination of the polyphenolic profile of Maytenus cajalbanica without previous separation.

La ocurrencia de rebrotes de la COVID-19 y su relación con el número reproductivo

RESUMEN El peligro de la ocurrencia de endemia por la COVID-19 es una preocupación del gobierno y epidemiólogos cubanos, pero conocer alguna métrica que influya en su surgimiento es de gran utilidad para evitarla. El objetivo de este trabajo es demostrar mediante modelos dinámicos y teoría cualitaiva de ecuaciones diferenciales, cómo el número reproductivo básico Ro constituye una métrica que incide en la ocurrencia de estos eventos. Se empleó un modelo de tipo SIR con demografía adaptado a las condiciones de Cuba. Los resultados demostraron que se consigue dar respuesta, desde el punto de vista matemático, a las condiciones que pueden causar un rebrote de la enfermedad. Recomendamos mantener activadas las medidas epidemiológicas que se relacionan en este trabajo y que ayudan a mantener controlados los casos confirmados que aparezcan y evitar de esta manera posibles rebrotes.

ABSTRACT The danger of the occurrence of endemic COVID-19 worries the Cuban government as well as epidemiologists. Knowledge about a metric that influences its emergence is a very useful tool to prevent it. The purpose of the study was to prove through dynamic models and the qualitative theory of differential equations that the basic reproduction number R0 is a metric influencing the occurrence of these events. A SIR model was used, which was adjusted to Cuban conditions. Results showed that a mathematical response may be provided to conditions potentially causing a fresh outbreak of the disease. We recommend to maintain activated the epidemiological measures referred to in the paper, which help keep under control the confirmed cases occurring, thus preventing possible fresh outbreaks.

A extimidade do supereu e um sujeito melancolizado / The extimity of the Superego and a melancholized subject / L'extimité du surmoi et un sujet mélancolisé / La extimidad del superyó y un sujeto melancolizado

Na história da psicanálise, o conceito de supereu é objeto de inúmeros estudos por introduzir questões teóricas que exigem precisões sempre maiores. Uma delas diz respeito à articulação com alguns aspectos do conceito de Outro, em Lacan. Pretendemos contribuir ao debate, com a clínica da melancolia, seguindo à risca as orientações de Freud, inclusive em nossa leitura de Lacan, para o que nos servimos também de alguns outros autores. Chamamos a atenção para a tradução do verbo eintauchen, com o qual Freud identifica o mecanismo que relaciona o supereu com o isso. Um caso clínico ilustra de que modo o supereu imerge no isso para então, servindo-nos dos desenvolvimentos topológicos de Lacan, verificarmos de que maneira o toro do Outro pode imergir no interior do envelope das demandas, imergindo no isso, como dizia Freud, reservatório da pulsão que é, fundamentalmente, pulsão de morte.

In the history of psychoanalysis, the concept of superego is the object of countless studies for introducing theoretical questions that require increasingly greater precisions. One of them concerns the articulation with some aspects of the concept of the Other in Lacan. We intend to contribute to the debate, with the clinic of melancholy, following the guidelines of Freud, even in our reading of Lacan, to which we also make use of some contributions from other authors. We call the attention to the translation of the verb eintauchen, with which Freud identifies the mechanism that relates the superego to the it (id). A clinical case illustrates how the superego immerses in the it, and then, using the topological developments of Lacan, we try to see how the torus of the Other can immerse itself within the envelope of demands, immersing in the it, as Freud used to say, the reservoir of the drive that is fundamentally the death drive.

Dans l'histoire de la psychanalyse, le concept du surmoi fait l'objet d'innombrables études car il introduit des questions théoriques nécessitant des précisions toujours plus grandes. L'une d'elles concerne l'articulation avec certains aspects du concept de l'Autre de la théorie de Lacan. Nous essayons de contribuer au débat, à la clinique de la mélancolie, en suivant rigoureusement les directives de Freud, y compris dans notre lecture de Lacan, et également d'autres auteurs. Nous attirons l'attention sur la traduction du verbe « eintauchen ¼, par lequel Freud identifie le mécanisme reliant le surmoi et la « chose ¼. Un cas clinique illustre la manière dont le surmoi s'immerge dans la chose. En utilisant les développements topologiques de Lacan, nous vérifions comment le tore de l'Autre peut s'immerger dans l'enveloppe des demandes en s'immergeant, comme disait Freud, dans le réservoir de la pulsion qui est, fondamentalement, pulsion de mort.

En la historia del psicoanálisis, el concepto del superyó ha sido objeto de innumerables estudios, ya que introduce cuestiones teóricas que siempre requieren mayores precisiones. Una de ellas se refiere a la articulación con algunos aspectos del concepto de Otro, en Lacan. Se pretende contribuir al debate con la clínica de la melancolía, siguiendo al pie de la letra las orientaciones de Freud, incluso en nuestra lectura de Lacan, para lo cual también consultamos a otros autores. Llamamos la atención sobre la traducción del verbo eintauchen, con el que Freud identifica el mecanismo que relaciona al superyó con el ello. Un caso clínico ilustra de qué manera el superyó se sumerge en el ello para entonces, sirviéndonos de los desarrollos topológicos de Lacan, verificar de qué manera el toro del Otro puede sumergirse en el interior del sobre de las demandas, sumergiéndose en el ello, como decía Freud, reservorio de la pulsión que es fundamentalmente pulsión de muerte.

In der Geschichte der Psychoanalyse ist das Konzept des Über-Ichs bis heute Gegenstand zahlloser Studien, da es theoretische Fragen aufwirft, die zunehmend präzisere Antworten erfordern. Eine dieser Fragen betrifft den Zusammenhang mit einigen Aspekten des Konzepts des Anderen von Lacan. Dieser Artikel untersucht die Klinik der Melancholie gemäß Freuds Richtlinien, sogar in unserer Lektüre von Lacan, zu der wir auch einige Beiträge anderer Autoren zu Hilfe nehmen. Wir weisen auf die Übersetzung des Verbes eintauchen hin, mit dem Freud den Mechanismus identifiziert, der das Über-Ich mit dem Es in Beziehung setzt. Anhand eines klinischen Falles zeigen wir auf, wie das Über-Ich in das Es eintaucht und untersuchen dann - anhand der topologischen Entwicklungen von Lacan - wie der Torus des Anderen in die Hülle der Forderungen eintauchen kann, eintauchend, wie Freud sagte, in das Reservoir des Triebes, der im Grunde der Todesantrieb ist.