RESUMO

INTRODUCTION: Piloting an aircraft is a complex multitasking activity that involves managing information in a nonautomatic way and generates a high workload (psychological, cognitive, and physical) for the pilot. The excess of these demands can result in decreased performance and may impair flight safety. Heart rate variability (HRV) has been used in recent studies as a method to investigate operator's workload in complex environments. This measure can assess the stress and recovery ability of the autonomic nervous system. However, a better understanding of flight influence on the pilot's autonomic modulation is necessary. Therefore, this scoping review aims to systematically map the studies related to changes in the autonomic modulation in military pilots during flight, in order to characterize their workload at different times and flight profiles. MATERIALS AND METHODS: A literature search was conducted using MEDLINE (by PubMed), SCOPUS, and LILACS databases. Recent records (2002-2022) that analyzed HRV in military pilots during flight were included. Meanwhile, studies in which piloting activity was not performed were excluded. The study was conducted in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses guideline extension for Scoping Reviews and the Updated Methodological Guidance for the Conduct of Scoping Reviews. RESULTS: A total of 298 records were obtained, of which 19 were included in the scoping review. The studies analyzed flights performed in high- and low-performance aircrafts, helicopters, and flight simulators, using time domain, frequency domain, and nonlinear HRV indices. Real and simulated flights produced significant autonomic changes. Some flights elicited autonomic nervous system responses that persisted up to 5 h after landing. During real flight, the most sensitive indices for identifying variations in pilot workload were root mean square of successive differences between normal heartbeats, standard deviation of interbeat interval of normal sinus beat (SDNN), ratio of low-frequency to high-frequency power, and Poincaré plot standard deviation perpendicular to the line of identity (SD1), whereas the interbeat interval (RR), SDNN, SD1, and Poincaré plot standard deviation along the line of identity (SD2) were the most sensitive indices when comparing segments of simulated flight with different levels of difficulty. CONCLUSIONS: This scoping review provided insight into the influence of flight on autonomic modulation in military pilots. Some key themes were highlighted: Increased sympathetic activity during flight, sensibility of different domains of HRV to flight demands, and autonomic changes during recovery time. Future research efforts may allow us to enhance the understanding of pilot's workload limits and to elucidate the optimal postflight recovery time.

RESUMO

OBJECTIVE: To analyze the association of food insecurity (FI) with chronic noncommunicable diseases (NCDs) in the Brazilian context. METHODS: The review protocol was registered with the International Prospective Register of Systematic Reviews (PROSPERO). The searches were conducted in LILACS and PubMed databases (September/2022). Observational studies carried out in the Brazilian population published since 2003 were included, in which: (1) the association of FI with NCDs was analyzed; and (2) the Brazilian Food Insecurity Scale was used. Studies on pregnant women and those that associated FI with cancer, sexually transmitted infections, and musculoskeletal and respiratory diseases were excluded. The studies were subjected to methodological quality assessment. RESULTS: A total of 27 cross-sectional studies were included; nine used secondary data from national surveys, and the others used primary data. An association between FI and overweight and obesity in different age groups was verified in the studies. CONCLUSION: The included articles did not produce evidence on other NCDs of interest to health in Brazil such as diabetes and high blood pressure. However, they corroborate the already-known relationship between obesity and FI. Studies on the topic, with a longitudinal design, should be encouraged.

Assuntos

RESUMO

BACKGROUND: Studying individuals with varying symptoms, from mild to severe, can provide valuable insights into the spectrum of cognitive outcomes after COVID-19. We investigated the cognitive performance of adults who recovered from the novel coronavirus disease (COVID-19) without prior cognitive complaints, considering mild (not hospitalized), moderate (ward), and severe (intensive care unit) symptoms. METHODS: This cross-sectional study included 302 patients who recovered from COVID-19 (mild, n = 102; moderate, n = 102; severe, n = 98). We assessed intellectual quotient (IQ), attention, memory, processing speed, visual-constructive ability, as well as symptoms of depression, anxiety, and stress, at least eighteen months after infection. The mean length of hospitalization was Mdays=8.2 (SD = 3.9) and Mdays=14.4 (SD = 8.2) in the moderate and severe groups, respectively. RESULTS: Cognitive difficulties were present in all three groups: mild (n = 12, 11.7%), moderate (n = 40, 39.2%), and severe (n = 48, 48.9%). Using Multinomial Logistic Regression and considering the odds ratio, our results indicated that a one-point increase in sustained attention, visual memory, and working memory might decrease the odds of being categorized in the severe group by 20%, 24%, and 77%, respectively, compared to the mild group. CONCLUSIONS: Our findings provide empirical evidence regarding the long-term cognitive effects of COVID-19, particularly in individuals experiencing severe manifestations of the disease. We also highlighted the need for a comprehensive, multidimensional approach in rehabilitation programs to address the enduring cognitive impacts of COVID-19.

Assuntos

RESUMO

Objetivo:Compreender as repercussões e formas de enfrentamento da Covid-19 no dia a dia da população que vive em situação de rua. Método:Estudo qualitativo, realizado em uma capital do Nordeste Brasileiro, de maio a julho de 2021. Participaram 31 pessoas que fazem parte da população que vive em situação de rua, através de uma entrevista. O processamento dos dados ocorreu através do software IRaMuTeQ 0.7 alpha 2, originando a análises: similitude, nuvem de palavras e dendrograma. Utilizou-se a análise temática, segundo Bardin. Resultados:Do discurso da população em situação de rua com Covid-19, observou-se em relação ao cuidado à saúde: fornecimento de auxílio no período pandêmico; medo de adoecer por Covid-19 e aquisição de medidas de barreira; necessidades enfrentadas durante a pandemia eimplementação de medidas de higiene. O viver em situação de rua aumentou sua vulnerabilidade no período pandêmico, embora em nosso estudo tenha se observado que o cuidado em saúde tenha ganhado potencialidade através da disponibilidade do consultório na rua, com sua humanização da assistência e atendimento acolhedor. Conclusão:Os impactos da Covid-19 acerca das formas de enfrentamento da PSR se deram nos aspectos socioemocionais, na disponibilização de medidas de prevenção e de apoio social.

Objective:To understand the repercussions and ways of coping with Covid-19 in the daily lives of the homeless population.Method:Qualitative study, carried out in a capital of the Northeast of Brazil, from May to July 2021. Thirty-one people who are part of the homeless population participated through an interview. Data processing took place using the IRaMuTeQ 0.7 alpha 2 software, resulting in analyses: similarity, word cloud and dendrogram. Thematic analysis was used, according to Bardin. Results:From the discourse of the homeless population with Covid-19, it was observed in relation to health care: provision of aid in the pandemic period; fear of becoming ill by Covid-19 and acquisition of barrier measures; needs faced during the pandemic and implementation of hygiene measures. Living on the streets increased its vulnerability during the pandemic period, although in our study it was observed that health care gained potential through the availability of the office on the street, with its humanization of assistance and welcoming care. Conclusion:The impacts of Covid-19 on the ways of coping with HLP occurred in socio-emotional aspects, in the provision of prevention measures and social support.

Assuntos

RESUMO

ABSTRACT Objective: To analyze the association of food insecurity (FI) with chronic noncommunicable diseases (NCDs) in the Brazilian context. Methods: The review protocol was registered with the International Prospective Register of Systematic Reviews (PROSPERO). The searches were conducted in LILACS and PubMed databases (September/2022). Observational studies carried out in the Brazilian population published since 2003 were included, in which: (1) the association of FI with NCDs was analyzed; and (2) the Brazilian Food Insecurity Scale was used. Studies on pregnant women and those that associated FI with cancer, sexually transmitted infections, and musculoskeletal and respiratory diseases were excluded. The studies were subjected to methodological quality assessment. Results: A total of 27 cross-sectional studies were included; nine used secondary data from national surveys, and the others used primary data. An association between FI and overweight and obesity in different age groups was verified in the studies. Conclusion: The included articles did not produce evidence on other NCDs of interest to health in Brazil such as diabetes and high blood pressure. However, they corroborate the already-known relationship between obesity and FI. Studies on the topic, with a longitudinal design, should be encouraged.

RESUMO Objetivo: Analisar a associação da insegurança alimentar (IA) com as doenças crônicas não transmissíveis (DCNTs) no contexto brasileiro. Métodos: O protocolo da revisão foi registrado no International Prospective Register of Systematic Reviews (PROSPERO). As buscas foram realizadas na LILACS e na PubMed (setembro/2022). Foram incluídos estudos observacionais realizados com a população brasileira, publicados a partir de 2003, que: (1) analisam a associação da IA com DCNTs; e (2) utilizam a Escala Brasileira de Insegurança Alimentar (EBIA). Foram excluídos estudos com gestantes e que associam a IA com câncer, infecções sexualmente transmissíveis e doenças musculoesqueléticas e respiratórias. Os estudos foram submetidos à avaliação da qualidade metodológica. Resultados: Foram incluídos 27 estudos transversais, dentre os quais 9 utilizaram dados secundários de inquéritos nacionais e os demais utilizaram dados primários. Os estudos revelaram associação da IA com sobrepeso e obesidade em diferentes faixas etárias. Conclusão: Os artigos incluídos não produziram evidências sobre outras DCNTs de interesse para a saúde no Brasil, como a diabetes e a hipertensão arterial. No entanto, contribuem para corroborar a relação já conhecida entre obesidade e IA. Estudos sobre a temática, com desenho longitudinal, devem ser incentivados.

RESUMO

RESUMO Objetivo: Descrever e explorar, sob a perspectiva de gestores e profissionais de saúde, o cuidado ofertado ao adolescente com obesidade no âmbito da Atenção Primária à Saúde. Método: Estudo de caso, realizado em município do estado do Ceará-Brasil. A coleta de dados ocorreu em 2022, por meio de entrevistas semiestruturadas. Os dados foram examinados através da Análise de conteúdo de Bardin. Resultados: O cuidado ao adolescente com obesidade é fragmentado, cada profissional atua conforme decisão própria, pois o município não utiliza protocolos que subsidiem a prática assistencial. Foram elencadas potencialidades para o cuidado, sendo a principal a equipe multiprofissional. Quanto às dificuldades, destacou-se a procura do serviço de saúde pelo adolescente. Conclusão: Faz-se necessária uma (re)organização do modelo de atenção ao adolescente com obesidade no município. Além disso, o estudo ressalta a necessidade de maior atenção a obesidade na adolescência e provoca reflexões acerca do cuidado dispensado a este adolescente.

ABSTRACT Objective: Describe and explore, from the perspective of managers and health professionals, the care offered to adolescents with obesity in the context of Primary Health Care. Method: A case study conducted in a municipality in the state of Ceará-Brazil. Data collection took place in 2022 through semi-structured interviews. The data were examined using Bardin Content Analysis. Results: The care of obese adolescents is fragmented, and each professional acts according to their own decision, as the municipality does not use protocols that subsidize the practice of care. Potentials for care were listed, the main one being the multidisciplinary team. Regarding the difficulties, the adolescent's demand for health services was highlighted. Conclusion: It is necessary to (re) organize the care model for obese adolescents in the municipality. In addition, the study highlights the need for greater attention to adolescent obesity and causes reflections on the care provided to this adolescent.

RESUMEN Objetivo: Describir y explorar, desde la perspectiva de los gestores y profesionales sanitarios, la atención ofrecida a los adolescentes con obesidad en el ámbito de la Atención Primaria de Salud. Método: Estudio de caso, realizado en un municipio del estado de Ceará-Brasil. Los datos se recogieron en 2022 mediante entrevistas semiestructuradas. Los datos se analizaron mediante el análisis de contenido de Bardin. Resultados: La atención a los adolescentes con obesidad está fragmentada, y cada profesional actúa según su propia decisión, ya que el municipio no utiliza protocolos para subvencionar la práctica asistencial. Se enumeraron las potencialidades asistenciales, siendo la principal el equipo multiprofesional. En cuanto a las dificultades, se destaca la búsqueda del servicio sanitario por parte del adolescente. Conclusión: Es necesario (re)organizar el modelo de atención a los adolescentes con obesidad en el municipio. Además, el estudio pone de manifiesto la necesidad de prestar más atención a la obesidad en la adolescencia y suscita reflexiones sobre la atención prestada a este adolescente.

RESUMO

Estudo realizado com o objetivo de analisar o modo como Agentes Comunitários de Saúde concebem e desenvolvem práticas educativas em saúde junto aos usuários, às famílias e à comunidade. Pesquisa qualitativa de caráter descritivo e exploratório, realizada com Agentes Comunitários de Saúde de oito municípios da região ampliada do Norte de Minas Gerais. Foram realizados oito grupos focais, entre julho e dezembro de 2018. Os resultados evidenciaram que as compreensões dos Agentes Comunitários de Saúde sobre a educação em saúde orientam o desenvolvimento de práticas que, ora apostam na repetição de informações e de recomendações sobre hábitos de vida considerados saudáveis, ora se pautam na escuta e no diálogo sobre diferentes aspectos da vida dos usuários. Identificou-se, ainda, um modo itinerante de os Agentes Comunitários de Saúde operarem com a educação em saúde nos territórios em que atuam. Considerando a descaracterização gradual e contínua das atividades desenvolvidas pelo Agente Comunitário de Saúde e resistindo aos seus desdobramentos, este artigo buscou empreender um movimento de (re)convocar para discussão a educação em saúde como atribuição orgânica dos Agentes Comunitários de Saúde, a partir da qual se busca fortalecer as práticas de prevenção de doenças e de promoção da saúde junto à comunidade.

This study carried out with the objective of analyzing how Community Health Agents conceive and develop educational practices in health with users, families and the community. Descriptive and exploratory qualitative research, carried out with Community Health Agents from eight municipalities in the extended region of Northern Minas Gerais. Eight focus groups were held between July and December 2018. The results showed that the understandings of the Community Health Agents about health education guide the development of practices that sometimes rely on the repetition of information and recommendations on lifestyle habits considered right and healthy, sometimes they are based on listening and dialogue on different aspects of users' lives. It was also identified an itinerant way for the Community Health Agents to operate with health education in the territories where they work. Considering the gradual and continuous de-characterization of the activities carried out by the Community Health Agents and resisting its consequences, this article sought to undertake a movement of (re)summoning for discussion the object of health education as an organic attribution of the Community Health Agents from which it seeks to strengthen the practices of disease prevention and health promotion in the community.

RESUMO

Quantum chemical bonding descriptors based on the total and overlap density can provide valuable information about chemical interactions in different systems. However, these descriptors can be sensitive to the basis set used. To address this, different numerical treatments of electron density have been proposed to reduce the basis set dependency. In this work, we introduce overlap properties (OPs) obtained through numerical treatment of the electron density and present the topology of overlap density (TOP) for the first time. We compare the basis set dependency of numerical OP and TOP descriptors with their quantum theory of atoms in molecules (QTAIM) counterparts, considering the total electron density. Three single (C-C, C-O, and C-F) bonds in ethane, methanol, and fluoromethane and two double (C═C and C═O) bonds in ethene and formaldehyde were analyzed. Diatomic molecules Li-X with X = F, Cl, and Br were also analyzed. Eight parameters, including QTAIM descriptors and OP/TOP descriptors, are used to assess the basis dependency at the ωB97X-D level of theory using 28 basis sets from three classes: Pople, Ahlrichs, and Dunning. The study revealed that the topological overlap electron density properties exhibit comparatively lesser dependence on the basis set compared to their total electron density counterparts. Remarkably, these properties retain their chemical significance even with reduced basis set dependency. Similarly, numerical OP descriptors show less basis set dependency than their QTAIM counterparts. The excess of polarization functions increases charge concentration in the interatomic region and influences both QTAIM and OP descriptors. The basis sets Def2TZVP, 6-31++G(d,p), 6-311++G(d,p), cc-pVDZ, cc-pVTZ, and cc-pVQZ demonstrate reduced variability for the tested bond classes in this study, with particular emphasis on the triple-ζ quality Ahlrichs' basis set. We recommend against using basis sets with numerous polarization functions, such as augmented Dunning's and Ahlrichs' quadruple-ζ.

RESUMO

Resumo O raciocínio clínico nasceu 2500 anos atrás com Hipócrates, tendo evoluído ao longo dos séculos, e se tornado uma mistura de arte e ciência. Várias personalidades ao longo da história contribuíram para melhorar a acurácia diagnóstica. Contudo, o erro diagnóstico é ainda comum e causa um grande impacto nos sistemas de saúde. Para lidar com esse desafio, vários modelos de raciocínio clínico surgiram para sistematizar o processo de pensamento clínico. Este artigo descreve a história do raciocínio clínico e os métodos atuais de raciocínio diagnóstico, propõe um novo modelo de raciocínio clínico chamado Raciocínio Integrativo, e traz perspectivas sobre o futuro do raciocínio clínico.

Abstract Clinical reasoning was born 2,500 years ago with Hippocrates, having evolved over the centuries, becoming a mixture of art and science. Several personalities throughout history have contributed to improving diagnostic accuracy. Nonetheless, diagnostic error is still common and causes a severe impact on healthcare systems. To face this challenge, several clinical reasoning models have emerged to systematize the clinical thinking process. This paper describes the history of clinical reasoning and current diagnostic reasoning methods, proposes a new clinical reasoning model, called Integrative Reasoning, and brings perspectives about the future of clinical reasoning.

RESUMO

Clinical reasoning was born 2,500 years ago with Hippocrates, having evolved over the centuries, becoming a mixture of art and science. Several personalities throughout history have contributed to improving diagnostic accuracy. Nonetheless, diagnostic error is still common and causes a severe impact on healthcare systems. To face this challenge, several clinical reasoning models have emerged to systematize the clinical thinking process. This paper describes the history of clinical reasoning and current diagnostic reasoning methods, proposes a new clinical reasoning model, called Integrative Reasoning, and brings perspectives about the future of clinical reasoning.

O raciocínio clínico nasceu 2500 anos atrás com Hipócrates, tendo evoluído ao longo dos séculos, e se tornado uma mistura de arte e ciência. Várias personalidades ao longo da história contribuíram para melhorar a acurácia diagnóstica. Contudo, o erro diagnóstico é ainda comum e causa um grande impacto nos sistemas de saúde. Para lidar com esse desafio, vários modelos de raciocínio clínico surgiram para sistematizar o processo de pensamento clínico. Este artigo descreve a história do raciocínio clínico e os métodos atuais de raciocínio diagnóstico, propõe um novo modelo de raciocínio clínico chamado Raciocínio Integrativo, e traz perspectivas sobre o futuro do raciocínio clínico.

RESUMO

The need to request public health managers to ensure the right of access to medicines characterizes an administrative case and the method to do so is called the administrative route. This mixed method study aimed to analyze the perceptions of plaintiffs requesting medications by the administrative route about barriers to access medicines in the Brazilian public health sector. Data were gathered through focus groups and questionnaires. The results point to the interdependence of pharmaceutical services with the interfacing areas to ensure access. The barriers related to individuals reflect the commitment to develop citizenship, justifying the cost of the medicine to motivate the demand. Barriers to service provision include irregular availability of medicines, insufficient resources, and unsatisfactory quality of services. The difficulty in obtaining medical consultations and prescriptions originating in the public sector are barriers to the health sector. The barriers above the health sector are compliance with administrative procedures, corruption, and clientelism. The administrative route intensifies inequities in access to healthcare in Brazil.

A necessidade de recorrer ao gestor público de saúde para efetivar o direito ao acesso a medicamentos caracteriza a via administrativa. O estudo analisou as percepções dos usuários que acionaram a via administrativa sobre as barreiras para o acesso a medicamentos no setor público de saúde de uma capital brasileira. Foi realizado estudo de método misto com grupo focal, questionário com demandantes e descrição dos medicamentos demandados pela via administrativa. Os resultados apontam a interdependência da assistência farmacêutica com as áreas de interfaceamento para a garantia do acesso. As barreiras relativas aos indivíduos refletem o comprometimento do desenvolvimento da cidadania, justificando o custo do medicamento motivar a demanda. As barreiras à prestação dos serviços contemplam disponibilidade irregular dos medicamentos, insuficiência de recursos e qualidade insatisfatória dos serviços. A dificuldade para conseguir consultas médicas e a exigência da prescrição originada no setor público são barreiras ao setor saúde. As barreiras acima do setor saúde são cumprimento dos procedimentos administrativos, corrupção e clientelismo. A via administrativa intensifica as iniquidades no acesso à saúde no Brasil.

Assuntos

RESUMO

Resumo A necessidade de recorrer ao gestor público de saúde para efetivar o direito ao acesso a medicamentos caracteriza a via administrativa. O estudo analisou as percepções dos usuários que acionaram a via administrativa sobre as barreiras para o acesso a medicamentos no setor público de saúde de uma capital brasileira. Foi realizado estudo de método misto com grupo focal, questionário com demandantes e descrição dos medicamentos demandados pela via administrativa. Os resultados apontam a interdependência da assistência farmacêutica com as áreas de interfaceamento para a garantia do acesso. As barreiras relativas aos indivíduos refletem o comprometimento do desenvolvimento da cidadania, justificando o custo do medicamento motivar a demanda. As barreiras à prestação dos serviços contemplam disponibilidade irregular dos medicamentos, insuficiência de recursos e qualidade insatisfatória dos serviços. A dificuldade para conseguir consultas médicas e a exigência da prescrição originada no setor público são barreiras ao setor saúde. As barreiras acima do setor saúde são cumprimento dos procedimentos administrativos, corrupção e clientelismo. A via administrativa intensifica as iniquidades no acesso à saúde no Brasil.

Abstract The need to request public health managers to ensure the right of access to medicines characterizes an administrative case and the method to do so is called the administrative route. This mixed method study aimed to analyze the perceptions of plaintiffs requesting medications by the administrative route about barriers to access medicines in the Brazilian public health sector. Data were gathered through focus groups and questionnaires. The results point to the interdependence of pharmaceutical services with the interfacing areas to ensure access. The barriers related to individuals reflect the commitment to develop citizenship, justifying the cost of the medicine to motivate the demand. Barriers to service provision include irregular availability of medicines, insufficient resources, and unsatisfactory quality of services. The difficulty in obtaining medical consultations and prescriptions originating in the public sector are barriers to the health sector. The barriers above the health sector are compliance with administrative procedures, corruption, and clientelism. The administrative route intensifies inequities in access to healthcare in Brazil.

Assuntos

RESUMO

Recent literature emphasizes how the specific stressors of the COVID-19 outbreak affect the general population and frontline professionals, including those conducting support or backup activities in health units, which can lead to vicarious traumatization. Vicarious traumatization has been used to describe negative emotional reactions in mental health professionals who assist or treat victims of traumatic events. Thus, the aim of this article is to report the actions used in the face of the psychological demands of professionals in a hospital, who were not on the frontline of COVID-19. We collected their sociodemographic information and checked the psychological impact using the depression, anxiety, and stress scale (DASS-21), which was followed by a psychoeducational program (topics related to COVID-19 control and prevention), and individual psychological care for the most severe cases. A total of 118 professionals participated in this study; they were between 20 and 67 years old. Mild to moderate anxiety was observed in 36.5% of the medical teams, 83.3% of the administrative staff, and 65.7% of general service workers, while stress symptoms were observed in 80.2%, 83.3%, and 59.9%, respectively. Depressive symptoms (35.3%) were more frequent in general service workers. The medical teams reported the benefits of primary psychological care, while the other professionals demanded more institutional support services related to the prevention and use of personal protective equipment. This study highlights relevant psychological demands that have repercussions on the daily lives of professionals. The psychoeducational program was considered positive regarding clarification actions. However, it was not perceived as effective in reducing fear, which may result from vicarious traumatization and requires other intervention modalities.

RESUMO

Abstract Recent literature emphasizes how the specific stressors of the COVID-19 outbreak affect the general population and frontline professionals, including those conducting support or backup activities in health units, which can lead to vicarious traumatization. Vicarious traumatization has been used to describe negative emotional reactions in mental health professionals who assist or treat victims of traumatic events. Thus, the aim of this article is to report the actions used in the face of the psychological demands of professionals in a hospital, who were not on the frontline of COVID-19. We collected their sociodemographic information and checked the psychological impact using the depression, anxiety, and stress scale (DASS-21), which was followed by a psychoeducational program (topics related to COVID-19 control and prevention), and individual psychological care for the most severe cases. A total of 118 professionals participated in this study; they were between 20 and 67 years old. Mild to moderate anxiety was observed in 36.5% of the medical teams, 83.3% of the administrative staff, and 65.7% of general service workers, while stress symptoms were observed in 80.2%, 83.3%, and 59.9%, respectively. Depressive symptoms (35.3%) were more frequent in general service workers. The medical teams reported the benefits of primary psychological care, while the other professionals demanded more institutional support services related to the prevention and use of personal protective equipment. This study highlights relevant psychological demands that have repercussions on the daily lives of professionals. The psychoeducational program was considered positive regarding clarification actions. However, it was not perceived as effective in reducing fear, which may result from vicarious traumatization and requires other intervention modalities.

Assuntos

RESUMO

Abstract This is an article aimed at showing the mentoring role in a fast-changing society, particularly during and after the COVID-19 pandemic. The intense flow of information feelings and new knowledge makes it necessary for medical education to be updated to keep up with social and professional dynamics, according to health requirements and new knowledge demands. The mentoring program is a development process in which the mentor promotes the mentee professional and personal growth, by the exchange of visions and experiences. It allows an increase in the repertoire of solutions, particularly important in such an unstable context imposed by the pandemic. The mentor and mentee are challenged to move from a traditional to a virtual environment, characterized by physical distancing, development of digital medicine and distance learning.

Assuntos

RESUMO

Doxorubicin (DOX), a chemotherapy drug successfully used in the therapy of various types of cancer, is currently associated with the mucositis development, an inflammation that can cause ulcerative lesions in the mucosa of the gastrointestinal tract, abdominal pain and secondary infections. To increase the safety of the chemotherapy, we loaded DOX into nanostructured lipid carriers (NLCs). The NLC-DOX was characterized by HPLC, DLS, NTA, Zeta potential, FTIR, DSC, TEM and cryogenic-TEM. The ability of NLC-DOX to control the DOX release was evaluated through in vitro release studies. Moreover, the effect of NLC-DOX on intestinal mucosa was compared to a free DOX solution in C57BL/6 mice. The NLC-DOX showed spherical shape, high drug encapsulation efficiency (84.8 ± 4.6%), high drug loading (55.2 ± 3.4 mg/g) and low average diameter (66.0-78.8 nm). The DSC and FTIR analyses showed high interaction between the NLC components, resulting in controlled drug release. Treatment with NLC-DOX attenuated DOX-induced mucositis in mice, improving shortening on villus height and crypt depth, decreased inflammatory parameters, preserved intestinal permeability and increased expression of tight junctions (ZO-1 and Ocludin). These results indicated that encapsulation of DOX in NLCs is viable and reduces the drug toxicity to mucosal structures.

RESUMO

Curcumin (CUR) is a natural substance extracted from turmeric that has antimicrobial properties. Due to its ability to absorb light in the blue spectrum, CUR is also used as a photosensitizer (PS) in antimicrobial Photodynamic Therapy (aPDT). However, CUR is hydrophobic, unstable in solutions, and has low bioavailability, which hinders its clinical use. To circumvent these drawbacks, drug delivery systems (DDSs) have been used. In this review, we summarize the DDSs used to carry CUR and their antimicrobial effect against viruses, bacteria, and fungi, including drug-resistant strains and emergent pathogens such as SARS-CoV-2. The reviewed DDSs include colloidal (micelles, liposomes, nanoemulsions, cyclodextrins, chitosan, and other polymeric nanoparticles), metallic, and mesoporous particles, as well as graphene, quantum dots, and hybrid nanosystems such as films and hydrogels. Free (non-encapsulated) CUR and CUR loaded in DDSs have a broad-spectrum antimicrobial action when used alone or as a PS in aPDT. They also show low cytotoxicity, in vivo biocompatibility, and improved wound healing. Although there are several in vitro and some in vivo investigations describing the nanotechnological aspects and the potential antimicrobial application of CUR-loaded DDSs, clinical trials are not reported and further studies should translate this evidence to the clinical scenarios of infections.

Assuntos

RESUMO

The repair of large bone defects is lengthy and complex. Both biomaterials and phototherapy have been used to improve bone repair. We aimed to describe histologically the repair of tibial fractures treated by wiring (W), irradiated or not, with laser (λ780 nm, 70 mW, CW, spot area of 0.5 cm2, 20.4 J/cm2 (4 × 5.1 J/cm2, Twin Flex Evolution®, MM Optics, Sao Carlos, SP, Brazil) per session, 300 s, 142.8 J/cm2 per treatment) or LED (λ850 ± 10 nm, 150 mW, spot area of 0.5 cm2, 20.4 J/cm2 per session, 64 s, 142.8 J/cm2 per treatment, Fisioled®, MM Optics, Sao Carlos, Sao Paulo, Brazil) and associated or not to the use of mineral trioxide aggregate (MTA, Angelus®, Londrina, PR, Brazil). Inflammation was discrete on groups W and W + LEDPT and absent on the others. Phototherapy protocols started immediately before suturing and repeated at every other day for 15 days. Collagen deposition intense on groups W + LEDPT, W + BIO-MTA + LaserPT and W + BIO-MTA + LEDPT and discrete or moderate on the other groups. Reabsorption was discrete on groups W and W + LEDPT and absent on the other groups. Neoformation varied greatly between groups. Most groups were partial and moderately filed with new-formed bone (W, W + LaserPT, W + LEDPT, W + BIO-MTA + LEDPT). On groups W + BIO-MTA and W + BIO-MTA + LaserPT bone, neoformation was intense and complete. Our results are indicative that the association of MTA and PBMT (λ = 780 nm) improves the repair of complete tibial fracture treated with wire osteosynthesis in a rodent model more efficiently than LED (λ = 850 ± 10 nm).

Assuntos

RESUMO

Brazil is a global agricultural commodity producer and the largest consumer of pesticides. Pesticide use in Brazil comprised 549 280 tons in 2018. In the country, soybean, corn, and sugar cane are extensively produced, which are the most pesticides demanding crops. In the last years, the records of new pesticides were the highest in the historical series. They can persist in soil or water, accumulate in organisms, and contaminate workers and the general population through the air, water, or food. This review aimed to gather toxicological data obtained by animal models exposed to 4 pesticides: glyphosate, chlorpyrifos, abamectin, and 2,4-D. An additional goal was to compose an overview of how this subject has been approached, surveying which research groups are working on this field, where they are located, and relations with pesticides used in those regions. We collected the papers from the platforms PubMed, Scopus, Scielo, and Web of Science, performed in Brazil from 2014 to 2019. After two-step blind selection using the software Rayyan QCRI by different authors, 67 studies were selected to extract data. We observed that research is more concentrated in the South region, followed by the Southeast and Midwest, with 43%, 32%, and 23% of the studies, respectively. The prevalent institutions are from the states of Rio Grande do Sul, São Paulo, and Goiás. The effects on a variety of biomarkers help predict the potential risks to humans and nontarget organisms. The prevalent animal model was fish (36%). Overall, the main toxic effects evaluated were mortality, abnormalities in the blood cells, developmental abnormalities, and behavior alterations. Integr Environ Assess Manag 2021;17:507-520. © 2020 SETAC.

Assuntos