Uncertainties Surrounding Madariaga Virus, a Member of the Eastern Equine Encephalitis Virus Complex.

Background: Madariaga virus (MADV), a member of the eastern equine encephalitis virus (EEEV) complex, circulates in Latin America and exhibits distinct evolutionary and ecological features compared to the North American EEEV. While published data have shed light on MADV ecology, several key aspects remain unknown. Methods: In this study, we compiled data on virus isolation, vector competence, and animal serology collected over six decades in Latin America to identify critical knowledge gaps on MADV transmission and ecology. Results: Specific vertebrate animals serving as amplifying hosts and the mosquito species acting as enzootic and epizootic vectors have not yet been identified. Other aspects that remain unclear are the virus current geographic distribution, the role of equines as hosts in epizootic cycles, and the full impact of MADV on human health in endemic regions. Conclusions: The numerous knowledge gaps surrounding MADV, its widespread distribution in Latin America, and its potential to cause severe disease in animals and humans emphasize the urgent need for increased research efforts, heightened awareness, and intensified surveillance towards this potential emerging threat.

Complexity and Sophistication.

Many financial situations present individuals with simple alternatives to solving complex problems. The value of these alternatives depends on whether individuals are sophisticated and know when they are better off opting out of complexity. We tested complexity's effects and evaluated sophistication in a large and diverse sample. We randomly assigned both complexity to portfolio problems and the offer of a simple alternative to portfolio choice. The less-skilled earn lower returns under complexity because they often opt out when the simple alternative is dominated. To interpret the findings, we develop a novel method for estimating the structural parameters of a rational inattention model. The structural estimates are consistent with substantial sophistication. Large fractions of the money that the low-skilled lose by opting out can be justified by their higher costs of attention.

A new method based on extraction induced by emulsion breaking for determination of Co and Ni in chocolate bars by graphite furnace atomic absorption spectrometry.

This paper describes a new experimental configuration of extraction induced by emulsion breaking method to extract and determine Ni and Co in chocolate bars by graphite furnace atomic absorption spectrometry. At optimized conditions, the sample (0.08 g) was mixed with 4 mL of extractant solution (4% m/v Triton X-100 and 10% v/v HNO3) in a plastic syringe to form a solid-oil-water emulsion. Then, emulsion breaking was assisted by membrane filtration. The total extraction procedure took approximately 1 min, in opposition to 25 (centrifugation) and 50 min (heating). Extraction yields ranged from 94.8 to 114.3% for Co and from 85.9 to 108.4% for Ni. The limits of detection and quantification were, respectively, 24.73 and 82.45 µg Kg-1 for Co and 49.05 and 163.5 µg Kg-1 for Ni. Recoveries ranged from 92.1 (Ni) to 105.4% (Co).

Nursing diagnoses in patients with COVID-19 admitted to the intensive care unit: CROSS-MAPPING.

To identify and analyze the nursing diagnoses listed in the medical records of COVID-19 patients admitted to an intensive care unit using Taxonomy II of NANDA-I. Background: COVID-19 is a complex disease with heterogeneous behaviors, and the role of intensive care nurses in accurately identifying related signs and symptoms has become even more critical during the pandemic. Nurses rely on classification systems or taxonomies to standardize concepts and language in practice. Method: This quantitative study employed a descriptive and individual approach, utilizing the cross-mapping method. Data were collected from 57 medical records of critical care patients in a hospital in northeastern Brazil between July 2020 and March 2021. Three researchers analyzed the mapped diagnoses, and agreement was assessed using the Content Validation Index and Fleiss' Kappa. Results: Among the listed nursing diagnoses, 54.28% were found to be standardized, 45.71% had corresponding nursing diagnoses, and 5.71% did not have an equivalent diagnosis in the reference taxonomy used in the study. Due to the possibility of multiple nursing diagnoses in the same patient, the most frequent diagnoses were Risk of pressure injury in adults (66.66%), Risk of falls in adults (64.91%), and Risk of infection (45.61%). Among the 37 diagnoses mapped, the risk diagnoses were the most prevalent and could be prevented if identified early. Conclusions: The study highlights the importance of standardized nursing diagnoses in the ICU for COVID-19 patients and the need for accurate identification and prevention of risk diagnoses to enhance patient care and improve outcomes.

A state-of-the-science review of analytical methods for urinary dialkylphosphate metabolites in the assessment of exposure to organophosphate pesticides: From 2000 to 2022.

The general population and workers are exposed to organophosphate insecticides, one of the leading chemical classes of pesticides used in rural and urban areas. This paper aims to conduct an integrative review of the most used analytical methods for identifying and quantifying dialkylphosphate-which are metabolites of organophosphate insecticides-in the urine of exposed workers, discussing their advantages, limitations and applicability. Searches utilized the PubMed, the Scientific Electronic Library Online and the Brazilian Digital Library of Theses and Dissertations databases between 2000 and 2021. Twenty-five studies were selected. The extraction methods most used were liquid-liquid extraction (LLE) (36%) and solid-phase extraction (SPE) (36%), with the SPE being more economical in terms of time and amount of solvents needed, and presenting the best percentage of recovery of analytes, when compared with LLE. Nineteen studies (76%) used the gas chromatography method of separation, and among these, 12 records (63%) indicated mass spectrometry used as a detection technology (analyzer). Studies demonstrate that dialkylphosphates are sensitive and representative exposure biomarkers for environmental and occupational organophosphate exposure.

Urinary dialkylphosphate metabolites in the assessment of exposure to organophosphate pesticides: from 2000 to 2022.

The general population and workers are exposed to organophosphate insecticides, one of the leading chemical classes of pesticides used in rural and urban areas, in the control of arboviruses and agriculture. These pesticides cause environmental/occupational exposure and associated risks to human and environmental health. The objective of this study was to carry out an integrative review of epidemiological studies that identified and quantified dialkylphosphate metabolites in the urine of exposed populations, focusing on the vector control workers, discussing the application and the results found. Searches utilized the Pubmed, Scielo, and the Brazilian Digital Library of Theses and Dissertations (BDTD) databases between 2000 and 2021. From the 194 selected studies, 75 (39%) were with children/adolescents, 48 (24%) with rural workers, 36 (19%) with the general population, 27 (14%) with pregnant women, and 9 (4%) with vector control workers. The total dialkylphosphate concentrations found in the occupationally exposed population were higher than in the general population. Studies demonstrate that dialkylphosphates are sensitive and representative exposure biomarkers for environmental and occupational organophosphate exposure. The work revealed a lack of studies with vector control workers and a lack of studies in developing countries.

Interference of Parenteral Nutrition Components in Silicon-Mediated Protection Against Aluminum Bioaccumulation.

Aluminum and silicon are contaminants found in formulations used to prepare parenteral nutrition. Both elements are leached from glass containers, mainly during the heating cycle for sterilization. Insoluble and biologically inactive species of hydroxyaluminosilicates have been shown to form in solutions containing Al and Si. Therefore, this interaction may play an important role in protecting the body against Al toxicity. In this study, the bioavailability of Al in the presence of Si, calcium gluconate (Gluc.), and potassium phosphate (Phosf.) was investigated in rats. The rats were divided into 10 groups of 5 animals each: control, Al, Si, Al + Si, Gluc, Gluc + Al, Gluc + Al + Si, Phosf, Phosf + Al, and Phosf + Al + Si. The doses, consisting of 0.5 mg/kg/day Al and 2 mg/kg/day Si in the presence or absence of Gluc. or Phosf., were intraperitoneally administered for 3 months. Tissues were analyzed for Al and Si content. Al accumulated in the liver, kidneys, and bones, and the simultaneous administration of Si decreased Al accumulation in these tissues. The presence of Si reduced the amount of Al present by 72% in the liver, by 45% in the kidneys, and by 16% in bone. This effect was lees pronounced in the presence of parenteral nutrition compounds though. Si tissue accumulation was also observed, mainly when administered together with phosphate. These results suggest that Si may act as a protector against Al toxicity, by either reducing Al absorption or increasing its excretion, probably through hydroxyaluminosilicates formation. The presence of calcium gluconate and potassium phosphate decreases or inhibits this effect.

DISTRIBUTIONAL EFFECTS OF EDUCATION ON HEALTH.

This paper studies distributional effects of education on health. In 1972, England, Scotland, and Wales raised their minimum school-leaving age from 15 to 16 for students born after 9/1/1957. Using a regression discontinuity design and objective health measures for 129,000 individuals, we find that education reduced body size and increased blood pressure in middle age. The reduction in body size was concentrated at the upper tail of the distribution with an 8 percentage point reduction in obesity. The increase in blood pressure was concentrated at the lower tail of the distribution with no effect on stage 2 hypertension.

Multiple anthropogenic influences in the Pará River (Amazonia, Brazil): A spatial-temporal ecotoxicological monitoring in abiotic and biotic compartments.

The mineral wealth of the Amazon region is prone to intense exploration with consequent metals mobilization in ecosystems. Besides that, a number of other anthropogenic activities contribute to the imbalance of this important environment. The Pará River is an important water body in the Amazon basin and is under multiple anthropogenic influences, including disorderly urbanization, port activities and processing of minerals such as bauxite and kaolin. In this study, metals concentrations (Al, Cr, Pb, Ba, Ni, and Mn) in water, sediment and organisms (the fish Cheirocerus goeldii and the shrimp Macrobrachium amazonicum) and biochemical biomarkers (total antioxidant capacity, ACAP and lipid peroxidation, LPO) were analyzed along five points in the Para River with different distances to a center of anthropogenic activity, in three seasonal periods (rainy, transition and dry). Metals concentrations were similar among sites in each seasonal period but Aluminium (Al) presented the highest concentrations among all analyzed metals both in sediment and water considering all sampling points and all seasonal periods. In the dissolved fraction, Al had values above those established by the local environmental agency, especially during the rainy season. In the biotic compartment, both fish and shrimps showed higher concentrations of metals (Al and Ba) in the rainy season compared to the other seasons. Shrimp was more responsive to metal accumulation than fish, showing an adaptive response of biomarkers. Fish showed an increase of LPO in gills for individuals from the point of greater anthropogenic interference during the rainy season, but no differences in metal accumulation. We conclude that there is a seasonal pattern of metals concentration in different environmental compartments. Metal concentration in organisms and biomarkers responses, showed the effect of anthropogenic influences, which was not evident in results from chemical analyses alone, due to the intensive hydrodynamics in the region.

Silver nano/microparticle toxicity in the shrimp Litopenaeus vannamei (Boone, 1931).

The effects of silver nano/microparticles (AgP) on juvenile Litopenaeus vannamei shrimp were evaluated through several responses, aiming to use it as a prophylactic and therapeutic method. Shrimps (3.19 ± 0.13 g) were exposed to clear water for 3 h with increasing concentrations of nanosilver (0; 25; 100; and 400 µg/l). After 3 h of exposure, they were transferred to water without nanosilver for 30 days (recovery). The weight gain and weekly growth were not affected by AgNP. Total antioxidant capacity (ACAP) increased in the hepatopancreas (exposure period) and gills (recovery) in shrimp exposed to AgNP. In muscle, ACAP was induced in shrimp exposed to 100 µg/l AgNP (exposure). In the gills, there was an increase in TBARS in shrimp exposed to 100 µg/l AgNP (recovery). In the concentration of protein-associated sulfhydryl groups (P-SH), a decrease was observed in the hepatopancreas (recovery) in the 100 µg/l AgNP treatment. In chromaticity parameters, an increase in reddish tones was observed in shrimp exposed to 100 µg/l AgNP (recovery). An increase in granular hemocytes was verified in shrimp exposed to 25 and 400 µg/l AgNP during exposure. Tissues analyzed histologically showed normal patterns without apoptosis or necrosis processes, and after 30 d of recovery, only in one muscle sample of shrimp exposed to µg/l of AgNP was silver detected. It is concluded that a prophylactic action of short duration (3 h) mostly did not affected the welfare of shrimp L. vannamei and can be considered its use as a therapeutic strategy.

Distribution of metals in different environmental compartments and oxidative stress biomarkers in Bryconops caudomaculatus (Osteichthyes: Characiformes) from a bauxite mining area in the Eastern Amazon.

The Eastern Amazon is rich in bauxite ore. The extraction and processing of bauxite lead to the mobilization of Aluminum (Al) and other metals in environmental. We evaluated the metals (Al, Mn, Ba, and Cr) concentration in tissue, water, and sediment associated with antioxidant and oxidative damage responses in Bryconops caudomaculatus. The samplings were done in two hydrological periods (post-rain and post-dry periods) and at three points, located at two rivers: one in the surroundings of the mining area (P1) and other inside the mining area, upstream (P2), and downstream (P3). Defense antioxidant system biomarkers analyzed were total antioxidant capacity (ACAP) and glutathione-S-transferase (GST) activity. As an oxidative damage biomarker, the lipoperoxidation (LPO) was evaluated. Metals concentrations in the water and sediment were higher in the post-rain period compared to post-dry period. The water samples were acidic, with dissolved Al concentrations above the values established by local legislation at all points. In the gills, the metals accumulation was higher in fish from in the surrounding and upstream sites, and in the liver, was higher in fish from downstream site. Fish from the surrounding had increased antioxidant defenses, with higher ACAP in all tissues and higher GST in the gills. Consequently, they had lower levels of LPO. Fish from the mining area had decreased antioxidant defenses, with lower ACAP in all tissues and lower GST in the gills. Consequently, they had higher levels of LPO, indicating oxidative stress. The fish muscle was not responsive to GST and LPO at all sites. We conclude that the oxidative stress observed in the gills and liver of B. caudomaculatus from the area modified by the mining activity reflected the local anthropogenic impact status.

Nível de conhecimento ético-legal dos graduandos em Medicina: estudo transversal no ano de 2020 / Level of ethical-legal knowledge of medicine graduants: cross-sectional study in the year of 2020

Resumo: Introdução: A literatura refere como frequentes denúncias sobre má prática médica. Logo, a investigação de como é feita a formação do acadêmico de Medicina, no contexto ético-legal, pode contribuir para sua melhoria. Objetivo: Este estudo teve como objetivos avaliar e comparar o conhecimento de acadêmicos de uma faculdade de Medicina sobre aspectos ético-legais da profissão, a partir de sua formação nas disciplinas do eixo relacionado ("Ética Médica e Bioética", "Medicina Legal" e "Deontologia/Perícia Médica e Boas Práticas"). Método: Trata-se de um estudo transversal com aplicação de questionário (agosto-novembro/2020) estruturado no Código de Ética Médica e Código de Ética do Estudante de Medicina - dez questões sociodemográficas e 12 objetivas (temas: "sigilo profissional", "relações interpessoais do estudante de Medicina", "publicidade médica", "relação com pacientes e familiares", "direitos humanos", "princípios fundamentais", "atividade médica" e "telemedicina"). Avaliaram-se 116 alunos: início, meio (durante curso do eixo ético-legal) e final da graduação. Para comparação, utilizaram-se os testes de Kruskal-Wallis e de Dunn. Para associação entre variáveis categóricas, adotaram-se o qui-quadrado e o teste exato de Fisher. Resultado: Identificou-se desempenho crescente com o avançar dos períodos, com diferença estatística entre as médias de acertos do primeiro, sexto e décimo/12°: 5,1; 6,7; e 7,8, (valor-p < 0,001). Já a análise por blocos temáticos não apontou associação estatística dos acertos com avançar na graduação (valor-p > 0,05) para temas de amplo alcance e desenvolvimento das competências desde o ciclo básico, como "publicidade médica", "relação com pacientes e familiares", "telemedicina" e "relações interpessoais do estudante de Medicina" - com ênfase em limitações do acadêmico no atendimento. Já para temas que exigiam competências inerentes às disciplinas do eixo ético-legal, encontrou-se tal associação (valor-p < 0,05), sendo: "sigilo profissional", "direitos humanos", "princípios fundamentais", "atividade médica" e "relações interpessoais do estudante de medicina" - especificamente sobre uso de eletrônicos. Por fim, o maior percentual de acertos (95,7%) associa-se às "relações interpessoais do estudante de Medicina", com ênfase nas limitações do acadêmico. Já as menores taxas apresentaram-se em "sigilo profissional" (18,1%), "atividade médica" (33,6%) e "direitos humanos" (25%)". Conclusão: Existe associação entre a formação proposta pelo eixo ético-legal e aumento efetivo do nível de conhecimento no acadêmico de Medicina sobre os aspectos ético-legais da profissão.

Abstract: Introduction: Complaints about medical malpractice are frequent. Therefore, investigating how the medical student formation is made concerning the ethical and legal aspects, can contribute to its improvement. Objective: To evaluate and compare the level of knowledge of medical students from a university about ethical and legal aspects of the profession, based on their formation in the disciplines of the related axis (Medical Ethics and Bioethics; Legal Medicine and Deontology/Medical Forensics and Good Practice). Method: Cross-sectional study carried out through the application of an online questionnaire (August-November/2020) based on the Code of Medical Ethics (CME) and the Code of Ethics for Medical Student- 10 sociodemographic and 12 objective questions (Topics: "Professional Confidentiality", "Medical student's Interpersonal Relations", "Medical Publicity", "Relations with Patients and Families", "Human Rights", "Fundamental Principles", "Medical Activity" and "Telemedicine"). A total of 116 students were evaluated at the start, middle and end of the medical course. The Kruskal-Wallis and Dunn tests were used for comparisons. The Chi-Square and Fisher's exact tests were used for the association of categorical variables. Results: The performance increased throughout the course, with statistical significance between the average number of correct answers in the 1st, 6th and 10th/12th periods: 5.1; 6.7 and 7.8, (p-value <0.001). The analysis by thematic blocks, on the other hand, did not show a statistical association of correct answers with progress in the medical course (p-value >0.05) for broad-reaching topics and development of competences from the basic cycle, such as "Medical Publicity", "Relations with Patients and Families", "Telemedicine" and "Medical Student's Interpersonal Relations" - with emphasis on the student's limitations in providing care. As for topics that required competences inherent to the disciplines of the ethical-legal axis, this association was identified (p-value <0.05), as follows: "Professional Confidentiality", "Human Rights", "Fundamental Principles", "Medical Activity" and "Medical Student's Interpersonal Relations" - specifically on the use of electronics. Finally, the highest percentage of correct answers (95.7%) is associated with "Medical Student's Interpersonal Relations", with an emphasis on the student's limitations. While the lowest rates were found in "Professional Confidentiality" (18.1%), "Medical Activity" (33.6%) and "Human Rights" (25%)". Conclusion: There is an association between the medical formation proposed by the ethical-legal axis, and the effective increase of the medical student's level of knowledge concerning the ethical-legal aspects of the profession.

A Method to Explore Variations of Ventilator-Associated Event Surveillance Definitions in Large Critical Care Databases in the United States.

The Centers for Disease Control has well-established surveillance programs to monitor preventable conditions in patients supported by mechanical ventilation (MV). The aim of the study was to develop a data-driven methodology to examine variations in the first tier of the ventilator-associated event surveillance definition, described as a ventilator-associated condition (VAC). Further, an interactive tool was designed to illustrate the effect of changes to the VAC surveillance definition, by applying different ventilator settings, time-intervals, demographics, and selected clinical criteria. DESIGN: Retrospective, multicenter, cross-sectional analysis. SETTING: Three hundred forty critical care units across 209 hospitals, comprising 261,910 patients in both the electronic Intensive Care Unit Clinical Research Database and Medical Information Mart for Intensive Care III databases. PATIENTS: A total of 14,517 patients undergoing MV for 4 or more days. MEASUREMENTS AND MAIN RESULTS: We designed a statistical analysis framework, complemented by a custom interactive data visualization tool to depict how changes to the VAC surveillance definition alter its prognostic performance, comparing patients with and without VAC. This methodology and tool enable comparison of three clinical outcomes (hospital mortality, hospital length-of-stay, and ICU length-of-stay) and provide the option to stratify patients by six criteria in two categories: patient population (dataset and ICU type) and clinical features (minimum Fio2, minimum positive end-expiratory pressure, early/late VAC, and worst first-day respiratory Sequential Organ Failure Assessment score). Patient population outcomes were depicted by heatmaps with mortality odds ratios. In parallel, outcomes from ventilation setting variations and clinical features were depicted with Kaplan-Meier survival curves. CONCLUSIONS: We developed a method to examine VAC using information extracted from large electronic health record databases. Building upon this framework, we developed an interactive tool to visualize and quantify the implications of variations in the VAC surveillance definition in different populations, across time and critical care settings. Data for patients with and without VAC was used to illustrate the effect of the application of this method and visualization tool.

Metabolomic Study of Urine from Workers Exposed to Low Concentrations of Benzene by UHPLC-ESI-QToF-MS Reveals Potential Biomarkers Associated with Oxidative Stress and Genotoxicity.

Benzene is a human carcinogen whose exposure to concentrations below 1 ppm (3.19 mg·m-3) is associated with myelotoxic effects. The determination of biomarkers such as trans-trans muconic acid (AttM) and S-phenylmercapturic acid (SPMA) show exposure without reflecting the toxic effects of benzene. For this reason, in this study, the urinary metabolome of individuals exposed to low concentrations of benzene was investigated, with the aim of understanding the biological response to exposure to this xenobiotic and identifying metabolites correlated with the toxic effects induced by it. Ultra-efficient liquid chromatography coupled to a quadrupole-time-of-flight mass spectrometer (UHPLC-ESI-Q-ToF-MS) was used to identify metabolites in the urine of environmentally (n = 28) and occupationally exposed (n = 32) to benzene (mean of 22.1 µg·m-3 and 31.8 µg·m-3, respectively). Non-targeted metabolomics analysis by PLS-DA revealed nine urinary metabolites discriminating between groups and statistically correlated with oxidative damage (MDA, thiol) and genetic material (chromosomal aberrations) induced by the hydrocarbon. The analysis of metabolic pathways revealed important alterations in lipid metabolism. These results point to the involvement of alterations in lipid metabolism in the mechanisms of cytotoxic and genotoxic action of benzene. Furthermore, this study proves the potential of metabolomics to provide relevant information to understand the biological response to exposure to xenobiotics and identify early effect biomarkers.

Prevalence of signs and symptoms of temporomandibular disorder in the metropolitan region of Rio De Janeiro: A population-based cross-sectional study.

OBJECTIVE: Temporomandibular disorder (TMD) is a group of heterogeneous pathological conditions that affect the temporomandibular joint (TMJ), mastication muscles, and some associated structures. The aim of this study was to measure the prevalence of signs and symptoms of dysfunction, including knowledge of TMD in a stratum of the population. METHODS: A population extract from Rio de Janeiro subdivided by conglomerates was interviewed through an online form. RESULTS: The results showed that only 19% of the participants had no symptoms related to TMD. CONCLUSION: The results showed that the symptom prevalence is directly related to knowledge and practices about the disorder and that its presence may be under-reported.

Improved microvascular reactivity after aged garlic extract intake is not mediated by hydrogen sulfide in older adults at risk for cardiovascular disease: a randomized clinical trial.

PURPOSE: This study aimed to investigate the effects of AGE on microvascular reactivity, systolic blood pressure (SBP), and diastolic blood pressure (DBP) in older individuals at high risk for cardiovascular disease (CVD). Urinary thiosulfate was also investigated as an indirect marker of endogenous hydrogen sulfide (H2S) synthesis. The study was conducted in a randomized, double-blind, crossover, and placebo-controlled way. METHODS: Twenty-eight participants (14 male), 67 ± 6 years old with CVD risk factors, ingested 2.4 g of AGE or placebo (PLA). Near-infrared spectroscopy evaluated tissue oxygen saturation (StO2) during a vascular occlusion test (30 s baseline, 5 min occlusion, and 2 min reperfusion). The upslope of StO2 signal after cuff release was calculated to measure microvascular reactivity. Urinary thiosulfate levels were measured using a high-performance liquid chromatography system. RESULTS: The upslope of StO2 was significantly faster after AGE (1.01 ± 0.37% s-1) intake compared to PLA (0.83 ± 0.35% s-1; P < 0.001; d = 0.50). Relative changes in Δ% SBP from pre- to post-AGE intake (- 5.17 ± 5.77%) was significantly different compared to Δ% PLA (0.32 ± 5.99%; P = 0.001; d = 0.93). No significant changes in urinary thiosulfate concentrations were observed between interventions. Moreover, no significant gender effect in any parameter assessed was found. CONCLUSION: This study demonstrated that a single dose of AGE improved microvascular reactivity in older adults at risk of CVD despite such an effect was not linked with urinary thiosulfate levels. This trial was registered at clinicaltrials.gov as NCT04008693 (May 19, 2020).

Effects of resistant exercise and aerobic exercise on people with fibromyalgia syndrome: a systematic review of randomized clinical trials / Efeitos do exercício resistido e do exercício aeróbico em pessoas com síndrome de fibromialgia: uma revisão sistemática de ensaios clínicos randomizados

INTRODUCTION: Fibromyalgia syndrome (FMS) is characterized as a condition of chronic and generalized muscle pain, resulting primarily in decreased functional capacity and emotional changes of the patient. Physical exercise (PE) can promote different effects in FMS depending on the chosen method: aerobic training (AT) alone, resistance training (RT) alone or the combination of both in concurrent training (CT). OBJECTIVE: To synthesize data from clinical trials on the effects of resistance training and aerobic training in people with FMS. METHODS: Searches were performed in the Pubmed, Scielo, Virtual Health Library, Scopus and Web of Science databases. Articles published between 2009 and 2020 were analyzed. RESULTS: Eighteen randomized clinical trials were included to compose the discussion of this review. Altogether 1,136 individuals with FMS who participated in interventions with PE were analyzed; 10 studies used RT as an intervention method; 8 applied AT and 3 used CT. In 3 studies more than one method was used. Studies pointed out that there were significant improvements in biological and psychophysiological aspects at the end of the interventions. CONCLUSION: The analyzed articles suggested that PE through both RT and AT, alone or combined, is an alternative treatment for the population with FMS, being a low-cost intervention and providing significant improvements for these patients.

INTRODUÇÃO: A síndrome de fibromialgia (SFM) é caracterizada como um quadro de dor muscular crônica e generalizada, que causa principalmente diminuição da capacidade funcional e alterações no aspecto emocional do paciente. O exercício físico (EF) pode promover efeitos distintos na SFM a depender do método aplicado: treinamento aeróbico (TA) isolado, treinamento resistido (TR) isolado, ou a combinação de ambos como treinamento concorrente (TC). OBJETIVO: Sintetizar os dados de ensaios clínicos sobre os efeitos do treinamento resistido e do treinamento aeróbico em pessoas com SFM. MÉTODOS: As buscas foram realizadas nos bancos de dados PubMed, SciELo, Virtual Health Library, Scopus e Web of Science. Foram analisados artigos publicados entre 2009 e 2020. RESULTADOS: Foram incluídos 18 ensaios clínicos randomizados para compor a discussão desta revisão. Ao todo foram analisadas 1.136 pessoas com SFM que participaram das intervenções com EF; 10 estudos utilizaram TR como método de intervenção; 8 aplicaram TA e 3 empregaram o TC. Em 3 estudos foram utilizados mais de um método como estratégia. Os estudos apontaram que ao final das intervenções, houve melhoras significativas em aspectos biológicos e psicofisiológicos. CONCLUSÃO: Os artigos analisados sugeriram que o EF por meio tanto do TR quanto do TA, isolado ou combinado, é uma alternativa de tratamento para a população com SFM, por serem intervenções de baixo custo financeiro e proporcionarem melhoras significativas para esses pacientes.

Oxidative stress and metal homeostasis alterations in Danio rerio (zebrafish) under single and combined carbamazepine, acetamiprid and cadmium exposures.

Contaminants of emerging concern (CEC) are routinely detected in aquatic environments, especially pharmaceuticals, such as carbamazepine (CBZ), and neonicotinoid pesticides, like acetamiprid (ACT). CECs can interact with each other and with other legislated contaminants like Cd, resulting in unknown effects. Most studies evaluate only the effects of single contaminant exposures on aquatic biota. Therefore, the aim of the present study was to assess the effects of both single and combined CBZ, ACT and Cd exposures on zebrafish brain and liver oxidative stress parameters and metal homeostasis. The biomarkers catalase (CAT), glutathione-S-transferase (GST), total thiols (TOT), metallothionein (MT) and malondialdehyde (MDA) and the essential elements Ca, Cu, K, Na, Mg, Mn and Zn were evaluated after 96-hour static exposures. CBZ, ACT and Cd single (brain and liver) and combined (liver) treatments resulted in oxidative effects in both fish organs, also leading to metal (Ca, Mg, K, Mn, Zn and Cu) homeostasis alterations. ACT exposure resulted in the greatest adverse effects in the brain, while CBZ was the cause of major element homeostasis and oxidative stress alterations in the liver. Lower LPO levels were observed in the combined treatments compared to single treatments, suggesting interactions and contaminant effect attenuation. This study is the first to evaluate the initial effects of combined CBZ, ACT and Cd exposures in zebrafish, paving the way for further investigations concerning other biomarkers during longer exposure times.

Vitamin D: a 14-year retrospective study at a clinical laboratory in Brazil

ABSTRACT Objective: This study aimed to assess vitamin D (25OHD) levels in individuals who underwent an examination at a private laboratory (between latitudes 14° and 22° south) over 14 years, stratified by sex, age, and epidemiological profiles, and determine variations in the number of tests performed over the years. Materials and methods: All records of 25OHD tests performed at a private clinical laboratory in Brazil were analyzed. This retrospective cross-sectional study included patients stratified by sex (female or male), age range (0-17, 18-40, 41-59, and ≥ 60 years), and year of testing. The final sample size was 193,725 patients. Categorical variables are presented as absolute and relative frequencies and numerical variables as means ± standard deviation. Comparisons between groups were performed using the equality of proportions test. Results: The number of tests performed steeply increased since 2010. More tests were performed in female individuals (73.3%) and individuals aged 41-59 years (32.2%). Most samples (68.0%) demonstrated sufficient vitamin D status. Women had a higher incidence of vitamin D deficiency than men (33.1% and 26.6%, respectively; p < 0.001). Individuals aged ≥ 60 years had the highest incidence of vitamin D deficiency (68.4%), while individuals aged 0-17 years had the lowest (32.2%) (p < 0.001). Conclusion: Despite increased testing and attention given to vitamin D in recent years, our study demonstrates high levels of deficiency in a country with geographical conditions favorable to its production.

APRENDENDO A SER PROFESSOR LONGE DA ESCOLA: a residência pedagógica na educação física em tempos de COVID-19 / LEARNING TO BECOME A TEACHER AWAY FROM THE SCHOOL: pedagogical residency program in physical education in COVID-19 pandemic / APRENDER A SER MAESTRO FUERA DE LA ESCUELA: residencia pedagógica en educación física en tiempos del COVID-19

Dada a especificidade da Educação Física (EF) escolar e os desafios enfrentados durante a pandemia de COVID-19, que se traduziu no fechamento das escolas e adesão ao ensino remoto no Brasil, nos interrogamos sobre o impacto do distanciamento social na formação de professores. Este artigo teve por objetivo analisar como os estudantes de licenciatura em EF, integrantes do programa Residência Pedagógica, experenciaram a docência da disciplina nesse período. Para isso, analisamos os relatos de experiência de 15 estudantes, nos quais narram suas dificuldades advindas da exclusão digital de seus alunos, do manejo das tecnologias para o ensino, temática ausente na formação inicial, e dos processos de ressignificação da EF em tempos pandêmicos.

Given the specificity of Physical Education (PE) in the school and the challenges faced during the COVID-19 pandemic, which resulted in the closure of schools and adherence to remote teaching in Brazil, we interrogate about the impact of social and physical distancing on teacher's education. This article aimed to analyze how PE preservice teachers, members of the Pedagogical Residency program, experienced teaching the discipline in this period. For this, we analyzed the experience reported by 15 students, in which they told their difficulties arising from the digital exclusion of their students, from the management of teaching technologies, a theme absent in initial education, and from the processes of reframing PE in pandemic times.

Dada la especificidad de la Educación Física (EF) escolar y los desafíos enfrentados durante la pandemia del COVID-19, que se tradujo en el cierre de escuelas y la adhesión a la enseñanza a distancia en Brasil, nos preguntamos sobre el impacto del distanciamiento social en la formación docente. Este artículo tuvo como objetivo analizar cómo los estudiantes de pregrado de Educación Física, miembros del programa de Residencia Pedagógica, experimentaron la docencia de la disciplina en este período. Para ello, analizamos los relatos de experiencia de 15 estudiantes, en los que narran sus dificultades derivadas de la exclusión digital de sus alumnos, del manejo de las tecnologías de enseñanza, tema ausente de la educación inicial y de los procesos de resignificación de la EF en tiempos de pandemia.