Efeito da fotobiomodulação na reabilitação de pacientes com patologias traumato-ortopédicas: revisão integrativa / Efectos de la fotobiomodulación en la rehabilitación de pacientes con patologías traumatoortopédicas: revisión integrativa / Effects of photobiomodulationin the rehabilitation of patients with traumato-orthopedic pathologies: integrative review

Introdução: Fotobiomodulação corresponde à exposição de tecidos biológicos a baixos níveis de luz vermelha e infravermelha, esta terapia favorece a reabilitação de diferentes tecidos e que pode ser utilizada para a melhora da prática clínica nas diferentes atuações da fisioterapia, como por exemplo, no tratamento dos acometimentos musculoesqueléticos e inflamatórios. Objetivo: Identificar os benefícios da fotobiomodulação empregados na reabilitação de pacientes nas diferentes patologias traumato-ortopédicas. Metodologia:Trata-se de uma revisão integrativa com busca online nas plataformas de dados: Medline e PubMed. Os descritores foram: fotobiomodulação, taumato-ortopedia e reabilitação. As línguas selecionadas foram: Português, Inglês e Espanhol, entre os anos de 2018 a 2022.Resultados:A descrição dos achados nos ensaios clínicos analisados mostra que a terapia de fotobiomodulação apresenta diferentes usos na prática clínica e que seu uso produz efeito analgésico, anti-inflamatório e regenerativo nos distúrbios musculoesqueléticos. Conclusões:De acordo com a revisão dos artigos, pôde-se perceber que a terapia por fotobiomodulação confirma seus benefícios e eficácia, portando, se fazendo positiva na atuação traumato-ortopédica, gerando resultados significativos quando comparada a outros recursos (AU).

Introduction: Photobiomodulationcorresponds to the exposure of biological tissues to low levels of red and infrared light, this therapy favors the rehabilitation of different tissues and can be used to improve clinical practice in different actions of physiotherapy, such as, for example, in the treatment of musculoskeletal and inflammatory disorders. Objective: To identify the benefits of photobiomodulation used in the rehabilitation of patients with different traumato-orthopedic pathologies. Methodology:This is an integrative review with online search on data platforms: Medline and PubMed. The descriptors were: photobiomodulation, thaumato-orthopedics and rehabilitation. The selected languages were: Portuguese, English and Spanish, from 2018 to 2022. Results: The description of the discovers in the analyzed clinical trials shows that photobiomodulation therapy has different uses in clinical practice and that its use produces analgesic, anti-inflammatory and regenerative effects in musculoskeletal disorders. Conclusions:According to the review of the articles, it could be seen that photobiomodulation therapy confirms its benefits and effectiveness, therefore, becoming positive in the trauma-orthopedic performance, generating significant results when compared to other resources (AU).

Introducción: La fotobiomodulacióncorresponde a la exposición de tejidos biológicos a bajos niveles de luz roja e infrarroja, esta terapia estimula la rehabilitación de diferentes tejidos y puede ser utilizada para mejorar la práctica clínica en diferentes áreas de fisioterapia, como por ejemplo, en tratamiento de Trastornos musculoesqueléticos e inflamatorios. Objetivo: Identificar los beneficios de la fotobiomodulación utilizada en la rehabilitación de pacientes con diferentes patologías traumato-ortopédicas. Metodología: Esta es una revisión integradora con búsqueda en línea en plataformas de datos: Medline y PubMed. Los descriptores fueron: fotobiomodulación, taumato-ortopedia y rehabilitación. Los idiomas seleccionados fueron: portugués, inglés y español, entre los años 2018 a 2022. Resultados: La descripción de los hallazgos en los ensayos clínicos analizados muestra que la terapia de fotobiomodulación tiene diferentes usos en la práctica clínica y que su uso produce efectos analgésicos, antiinflamatorios y regenerador en trastornos musculoesqueléticos. Conclusiones: De acuerdo con la revisión de los artículos, se pudo apreciar que la terapia de fotobiomodulación confirma sus beneficios y efectividad, por lo tanto, tornándose positiva en el desempeño trauma-ortopédico, generando resultados significativos cuando se compara con otros recursos (AU).

Biosurfactants production by marine yeasts isolated from zoanthids and characterization of an emulsifier produced by Yarrowia lipolytica LMS 24B.

The present study investigates the potential for biosurfactant production of 19 marine yeast species obtained from zoanthids. Using the emulsification index test to screen the samples produced by the marine yeasts, we verified that five isolates exhibited an emulsification index ≥50%. Additional tests were performed on such isolates, including oil displacement, drop collapse, Parafilm M assay, and surface tension measurement. The tolerance of produced biosurfactants for environmental conditions was also analyzed, especially considering the media's temperature, pH, and salinity. Moreover, the surfactant's ability to emulsify different hydrocarbon sources and to metabolize kerosene as the sole carbon source was evaluated in vitro. Our results demonstrate that yeast biosurfactants can emulsify hydrocarbon sources under different physicochemical conditions and metabolize kerosene as a carbon source. Considering the Yarrowia lipolytica LMS 24B as the yeast model for biosurfactant production from the cell's wall biomass, emulsification indexes of 61.2% were obtained, even at a high temperature of 120 °C. Furthermore, the Fourier-transform middle infrared spectroscopy (FTIR) analysis of the biosurfactant's chemical composition revealed the presence of distinct functional groups assigned to a glycoprotein complex. Considering the status of developing new bioproducts and bioprocesses nowadays, our findings bring a new perspective to biosurfactant production by marine yeasts, especially Y. lipolytica LMS 24B. In particular, the presented results validate the relevance of marine environments as valuable sources of genetic resources, i.e., yeast strains capable of metabolizing and emulsifying petroleum derivatives.

Neonatal outcomes of pregnant women attending integrated and standard substance use treatment programs in Ontario, Canada.

BACKGROUND: Substance use in pregnancy raises concern given its potential teratogenic effects. Given the unique needs of parenting people and the potential impact for developing children, specialized substance use treatment programs are increasingly being implemented for this population. Substance use treatment is associated with more positive neonatal outcomes compared with no treatment, however treatment models vary limiting our understanding of key treatment components/modelsFew studies have explored the influence of treatment model type (i.e., integrated treatments designed for pregnant clients compared with standard treatment models) and no studies have examined the influence of treatment model on neonatal outcomes using Canadian data. METHOD: We conducted a population-based cohort study of clients who were pregnant when initiating integrated (n = 564) and standard (n = 320) substance use treatment programs in Ontario, Canada. RESULTS: Neonatal outcomes did not significantly differ by treatment type (integrated or standard), with rates of adverse neonatal outcomes higher than published rates for the general population, despite receipt of adequate levels of prenatal care. While this suggests no significant impact of treatment, it is notable that as a group, clients engaged in integrated treatment presented with more risk factors for adverse neonatal outcomes than those in standard treatment. While we controlled for these risks in our analyses, this may have obscured their influence in relation to treatment type. CONCLUSION: Findings underscore the need for more nuanced research that considers the influence of client factors in interaction with treatment type. Pregnant clients engaged in any form of substance use treatment are at higher risk of having children who experience adverse neonatal outcomes. This underscores the urgent need for further investment in services and research to support maternal and neonatal health before and during pregnancy, as well as long-term service models that support women and children beyond the perinatal and early childhood periods.

LQM10, a guanylhydrazone derivative, reduces nociceptive and inflammatory responses in mice.

In the present study, we examined the antinociceptive and anti-inflammatory activities of a guanylhydrazone derivative, (E)-(3,5-di-tert-butyl-4-hydroxybenzylidene)-2-guanylhydrazone hydrochloride (LQM10), in mice. The antinociceptive effect was determined by assessing behavioural responses in different pain models, while anti-inflammatory activity was examined in carrageenan-induced pleurisy. Intraperitoneal LQM10 administration reduced the acetic acid-induced nociceptive behaviour, a phenomenon that was unaltered by pretreatment with yohimbine, atropine, naloxone or glibenclamide. In the formalin assay, LQM10 reduced nociceptive behaviour only in the second phase, indicating an inhibitory effect on inflammatory pain. LQM10 did not alter the pain latency in the hot plate assay and did not impact the locomotor activity of mice in the rotarod assay. In the carrageenan-induced pleurisy assay, LQM10 treatment inhibited critical events involved in inflammatory responses, namely, leucocyte recruitment, plasma leakage and increased inflammatory mediators (tumour necrosis factor Like Properties of Chalchones and Flavonoid Derivatives [TNF]-α and interleukin [IL]-1ß) in the pleural exudate. Overall, these results indicate that LQM10 exhibits antinociceptive effects associated with peripheral mechanisms and anti-inflammatory activity mediated via a reduction in leucocyte migration and proinflammatory mediators, rendering this compound a promising candidate for treating pain and inflammatory process.

Disponibilidade, acesso percebido e insegurança alimentar em domicílios de escolares de dois municípios de Minas Gerais na pandemia de COVID-19 / Availability, perceived access, and food insecurity in households of schoolchildren in two cities of Minas Gerais in the COVID-19 pandemic

Introdução: O contexto pandêmico tem implicações diretas na situação de segurança alimentar e nutricional atual e futura, assim é urgente avaliar a situação da insegurança alimentar em suas diferentes dimensões. Há poucos estudos que avaliam conjuntamente segurança alimentar, disponibilidade e acesso aos alimentos. Objetivo: Descrever a disponibilidade alimentar domiciliar e o acesso percebido aos alimentos segundo a situação de insegurança alimentar em domicílios de escolares na pandemia de COVID-19. Métodos: Trata-se de um estudo transversal com amostra representativa de domicílios de escolares da educação infantil e ensino fundamental de escolas públicas de Mariana e Ouro Preto, Minas Gerais. Os dados foram coletados na fase inicial da pandemia, "junho e julho de 2020", por meio de entrevistas telefônicas com os responsáveis por comprar e/ou preparar os alimentos nos domicílios. Investigou-se condições socioeconômicas, acesso percebido aos alimentos, disponibilidade alimentar domiciliar e insegurança alimentar, esta avaliada por meio da Escala Brasileira de Insegurança Alimentar. Resultados: Dos 612 domicílios investigados, 82,0% estavam em situação de insegurança alimentar, sendo 11,3% em insegurança moderada e 5,1% em insegurança grave. Foi observada relação entre disponibilidade de frutas, hortaliças, leite, carnes e ovos com a insegurança alimentar, bem como com a percepção de dificuldade no acesso a frutas e hortaliças. Discussão: A situação de insegurança alimentar enfrentada pelos domicílios relaciona-se com menor disponibilidade de alimentos importantes para o desenvolvimento dos escolares, ademais as famílias depararam com inacessibilidade para adquirir frutas e hortaliças. (AU)

Introduction: The pandemic context impacts the current and future situation of food and nutritional security, so it is urgent to assess the situation of food insecurity in its different dimensions. There are few studies that jointly assess food security, availability, and access to food. Objective: To describe household food availability and perceived access to food according to the situation of food insecurity in households of schoolchildren during the COVID-19 pandemic. Methods: This is a cross-sectional study with a representative sample of households of schoolchildren in early childhood education and elementary school from public schools in Mariana and Ouro Preto, Minas Gerais. Data were collected in the initial phase of the pandemic, "June and July 2020", through telephone interviews with those responsible for buying and/or preparing the food in the households. Socioeconomic conditions, perceived access to food, and household food availability were investigated, and food insecurity was measured using the Brazilian Household Food Insecurity Measurement Scale. Results: Of the 612 households surveyed, 82.0% of the households presented food insecurity, of which 11.3% moderate food insecurity and 5.1% severe food insecurity. A relationship was observed between the low availability of fruits, vegetables, milk, meat, and eggs with food insecurity and the perception of difficulty in accessing fruits and vegetables. Discussion: The situation of food insecurity faced by households is related to low availability of essential foods for the development of schoolchildren, and families also encounter inaccessibility to acquire fruits and vegetables. (AU)

Advances in Computational Methods to Discover New NS2B-NS3 Inhibitors Useful Against Dengue and Zika Viruses.

The Flaviviridae virus family consists of the genera Hepacivirus, Pestivirus, and Flavivirus, with approximately 70 viral types that use arthropods as vectors. Among these diseases, dengue (DENV) and zika virus (ZIKV) serotypes stand out, responsible for thousands of deaths worldwide. Due to the significant increase in cases, the World Health Organization (WHO) declared DENV a potential threat for 2019 due to being transmitted by infected travelers. Furthermore, ZIKV also has a high rate of transmissibility, highlighted in the outbreak in 2015, generating consequences such as Guillain-Barré syndrome and microcephaly. According to clinical outcomes, those infected with DENV can be asymptomatic, and in other cases, it can be lethal. On the other hand, ZIKV has severe neurological symptoms in newborn babies and adults. More serious symptoms include microcephaly, brain calcifications, intrauterine growth restriction, and fetal death. Despite these worrying data, no drug or vaccine is approved to treat these diseases. In the drug discovery process, one of the targets explored against these diseases is the NS2B-NS3 complex, which presents the catalytic triad His51, Asp75, and Ser135, with the function of cleaving polyproteins, with specificity for basic amino acid residues, Lys- Arg, Arg-Arg, Arg-Lys or Gln-Arg. Since NS3 is highly conserved in all DENV serotypes and plays a vital role in viral replication, this complex is an excellent drug target. In recent years, computer-aided drug discovery (CADD) is increasingly essential in drug discovery campaigns, making the process faster and more cost-effective, mainly explained by discovering new drugs against DENV and ZIKV. Finally, the main advances in computational methods applied to discover new compounds against these diseases will be presented here. In fact, molecular dynamics simulations and virtual screening is the most explored approach, providing several hit and lead compounds that can be used in further optimizations. In addition, fragment-based drug design and quantum chemistry/molecular mechanics (QM/MM) provides new insights for developing anti-DENV/ZIKV drugs. We hope that this review offers further helpful information for researchers worldwide and stimulates the use of computational methods to find a promising drug for treating DENV and ZIKV.

Relevância da deambulação precoce no tempo de internação hospitalar de pacientes idosos: revisão integrativa / Relevance of early deambulation in the time of hospital admission of elderlypatients: integrative review / Relevancia de la caminata temprana en el tiempo de internamientohospitalariodel anciano: revisión integrativa

Introdução:No Brasil, a população considerada idosa representa a faixa etária que mais utiliza os serviçoshospitalares.Mesmo sendo um importante recurso, a admissão hospitalar frequente ou por um tempo prolongado, pode gerar comprometimentos funcionais a este público.A prática da reabilitação precoce contribui para minimizar e prevenir estesimpactos deletérios do imobilismo, favorecer a capacidade funcional, diminuindo o tempo de hospitalização, além de promover qualidade de vida. Objetivo:Observar a relevância da mobilização precoce em idosos, bem como os prejuízos acarretados pelo imobilismo durante internação hospitalar.Metodologia:Trata-se de uma revisão integrativa com busca online nas bases de dados PEDro, PUBMED, MEDLINE, LILACS e SciELO, os descritores foram: mobilização precoce, imobilismoeidosos, com seus respectivos em língua inglesa, foram selecionados artigos publicados entre os anos de 2016 a 2020, em língua portuguesa e estrangeira.Resultados:Foram selecionados cinco artigos para a discussão, sendo utilizado a deambulação precoce de precisão como limiar de segurança para reabilitação cardíaca; avaliou-se a influência da reabilitação precoce e terapia de reabilitação em pacientes com mais de 72 horas de ventilação mecânica prolongada; observou-se a intensificação da fisioterapia pós-operatória, com exercícios de respiração profunda e mobilização precoce; observou-se que a reabilitação domiciliar interdisciplinar geriátrica em idosos com fratura de quadril poderia melhorar a capacidade de locomoção e reduzir tempo de internação pós-operatória. Os achados discutidos entre os autores, apontam com unanimidade a aprovação da deambulação e mobilização precoce.Conclusões:A mobilização precoce mostrou-se eficaz tanto nos pacientes em atendimento hospitalar como no ambiente domiciliar, reduzindo significativamente os prejuízos ocasionados pelo imobilismo (AU).

Introduction:In Brazil, the population considered elderly represents the age group that most uses hospital services. Even though an important resource, frequent hospital admission orfor a prolonged period of time can generate functional impairments for this public. The practice of early rehabilitation helps to minimize and prevent the deleterious impacts of immobility, favoring functional capacity, decreasing the length of hospital stay and promoting quality of life. Objective:The study aims to observe the relevance of early mobilization in the elderly, as well as the damage caused by immobility during hospitalization. Methodology:This is an integrative review with an online search in the PEDro, PUBMED, MEDLINE, LILACS and SciELO databases. The descriptors were: early mobilization, immobility in the elderly and their respective in English. Articles published between the years 2016 to 2020, in Portuguese and foreign languages, were used. Results:Five articles were selected for discussion, using Precision Early Ambulation as a safety threshold for cardiac rehabilitation; the influence of early rehabilitation and rehabilitation therapyin patients with more than 72 hours of prolonged mechanical ventilation was evaluated; it was observed the intensification of postoperative physical therapy, with deep breathing exercises and early mobilization; geriatric interdisciplinary home rehabilitation in elderly patients with hip fractures was evaluated to improve mobility and reduce postoperative hospital stay. Discussions among the authors unanimously point to the approval of ambulation and early mobilization.Conclusions:Early mobilization proved to be effective both in patients in hospital care and in the home environment, significantly reducing the damage caused by immobility (AU).

Introducción:En Brasil, la población considerada anciana representa el grupo de edad que más utiliza los servicios hospitalarios. A pesar de que es un recurso importante, la hospitalización frecuente o por un período prolongado de tiempo puede generar deficiencias funcionales para este público. La práctica de la rehabilitación temprana ayuda a minimizar y prevenir los impactos deletéreos de la inmovilidad, favoreciendo la capacidad funcional, reduciendo el tiempo de hospitalización, además de promover la calidad de vida. Objetivo: El estudio tiene como objetivo observar la relevancia de la movilización temprana en ancianos, así como los daños causados por la inmovilización durante la hospitalización. Metodología: Esta es una revisión integradora con una búsqueda en línea de las bases de datos PEDro, PUBMED, MEDLINE, LILACS y SciELO, los descriptores fueron: movilización temprana, inmovilidad y ancianos en el idioma inglés, se seleccionaron artículos publicados entre los años de 2016 a 2020, en portugués y lenguas extranjeras. Resultados: Se seleccionaron cinco artículos para discusión, utilizando deambulación temprana de precisión como umbral de seguridad para la rehabilitación cardiaca; se evaluó la influencia de la rehabilitación temprana y la terapia de rehabilitaciónen pacientes con más de 72 horas de ventilación mecánica prolongada; hubo una intensificación de la fisioterapia posoperatoria, con ejercicios de respiración profunda y movilización precoz; Se evaluó la rehabilitación domiciliaria interdisciplinaria geriátrica en pacientes ancianos con fractura de caderapara mejorar la movilidad y reducir la estancia hospitalaria postoperatoria. Los hallazgos discutidos entre los autores apuntan unánimemente a la aprobación de la deambulación y la movilización precoz. Conclusiones: La movilización temprana demostró ser efectiva tanto en pacientes en atención hospitalaria como en el ámbito domiciliario, reduciendo significativamente el daño ocasionado por la inmovilización (AU).

Home food insecurity during the suspension of classes in Brazilian public schools due to the COVID-19 pandemic.

OBJECTIVES: We sought to evaluate the effect of socioeconomic conditions and variables related to the COVID-19 pandemic on the food insecurity of students during suspension of classes in public schools. METHODS: This was a telephone survey (n = 612) of adults responsible for purchasing food through representative samples of students in two Brazilian municipalities in June and July 2020. The outcome was food insecurity, assessed using the Brazilian Food Insecurity Scale. Multivariate logistic regression models were used to estimate the odds ratio (OR) and 95% confidence interval (CIs) for sociodemographic and pandemic-related factors of COVID-19. RESULTS: The total prevalence of food insecurity in households was 82%, with 65.7% mild food insecurity, 11.3% moderate, and 5.0% severe. After adjustment for confounding factors, households with the highest number of children (OR = 2.17; 95% CI, 1.10-4.27) and households that received local-government basic food baskets (OR = 1.64; 95% CI, 1.04-2.58) were significantly associated with food insecurity. Furthermore, households that did not experience a decrease in income during the pandemic were inversely associated with food insecurity (OR, 0.17; 95% CI, 0.09-0.32). CONCLUSIONS: The prevalence of food insecurity was high, and policies for the distribution of food baskets may not be sufficient to guarantee food security for the most vulnerable families with a greater number of children. Considering the possible worsening of food insecurity during the COVID-19 pandemic, the National School Feeding Program has the potential to play a strategic role in promoting food security for students.

Targeting Chikungunya Virus Entry: Alternatives for New Inhibitors in Drug Discovery.

Chikungunya virus (CHIKV) is an Alphavirus (Togaviridae) responsible for Chikungunya fever (CHIKF) that is mainly characterized by a severe polyarthralgia, in which it is transmitted by the bite of infected Aedes aegypti and Ae. albopictus mosquitoes. Nowadays, there are no licensed vaccines or approved drugs to specifically treat this viral disease. Structural viral proteins participate in key steps of its replication cycle, such as viral entry, membrane fusion, nucleocapsid assembly, and virus budding. In this context, envelope E3-E2-E1 glycoproteins complex could be targeted for designing new drug candidates. In this review, aspects of the CHIKV entry mechanism are discussed to provide insights into assisting the drug discovery process. Moreover, several naturals, naturebased and synthetic compounds, as well as repurposed drugs and virtual screening are also explored as alternatives for developing CHIKV entry inhibitors. Finally, we provided a complementary analysis of studies involving inhibitors that were not explored by in silico methods. Based on this, Phe118, Val179, and Lys181 were found to be the most frequent residues, being present in 89.6, 82.7, and 93.1% of complexes, respectively. Lastly, some chemical aspects associated with interactions of these inhibitors and mature envelope E3- E2-E1 glycoproteins' complex were discussed to provide data for scientists worldwide, supporting their search for new inhibitors against this emerging arbovirus.

Negative Emotionality and Internalizing Behaviors in Preschool Children: Moderating Role of Inhibitory Control.

Negative emotionality in childhood is typically positively associated with internalizing behaviors, whereas inhibitory control is negatively associated with internalizing behaviors. Recent work, however, has also found that inhibitory control paradoxically increases risk for internalizing behaviors in the context of some reactive temperamental styles. The purpose of the present study was to examine whether inhibitory control moderated the association between negative emotionality and prospective internalizing behaviors in typically developing preschoolers (N = 104, 51 girls, Mage = 3.46 years, SDage = 0.19). We found that negative emotionality at T1 was only positively associated with internalizing behaviors at T2 in preschoolers with relatively higher inhibitory control. Our results suggest that relatively high levels of inhibitory control may be less adaptive for children who also have relatively high levels of negative emotionality. Findings are discussed in the context of cognitive overcontrol in understanding risk for internalizing behaviors before formal school entry.

Synthesis, Antileishmanial Activity and in silico Studies of Aminoguanidine Hydrazones (AGH) and Thiosemicarbazones (TSC) Against Leishmania chagasi Amastigotes.

BACKGROUND: Leishmaniasis is a worldwide health problem, highly endemic in developing countries. Among the four main clinical forms of the disease, visceral leishmaniasis is the most severe, fatal in 95% of cases. The undesired side-effects from first-line chemotherapy and the reported drug resistance search for effective drugs that can replace or supplement those currently used in an urgent need. Aminoguanidine hydrazones (AGH's) have been explored for exhibiting a diverse spectrum of biological activities, in particular the antileishmanial activity of MGBG. The bioisosteres thiosemicarbazones (TSC's) offer a similar biological activity diversity, including antiprotozoal effects against Leishmania species and Trypanosoma cruzi. OBJECTIVES: Considering the impact of leishmaniasis worldwide, this work aimed to design, synthesize, and perform a screening upon L. chagasi amastigotes and for the cytotoxicity of the small "inhouse" library of both AGH and TSC derivatives and their structurally-related compounds. METHODS: A set of AGH's (3-7), TSC's (9, 10), and semicarbazones (11) were initially synthesized. Subsequently, different semi-constrained analogs were designed and also prepared, including thiazolidines (12), dihydrothiazines (13), imidazolines (15), pyrimidines (16, 18) azines (19, 20), and benzotriazepinones (23-25). All intermediates and target compounds were obtained with satisfactory yields and exhibited spectral data consistent with their structures. All final compounds were evaluated against L. chagasi amastigotes and J774.A1 cell line. Molecular docking was performed towards trypanothione reductase using GOLD® software. RESULTS: The AGH's 3i, 4a, and 5d, and the TSC's 9i, 9k, and 9o were selected as valuable hits. These compounds presented antileishmanial activity compared with pentamidine, showing IC50 values ranged from 0.6 to 7.27 µM, maximal effects up to 55.3%, and satisfactory SI values (ranged from 11 to 87). On the other hand, most of the resulting semi-constrained analogs were found cytotoxic or presented reduced antileishmanial activity. In general, TSC class is more promising than its isosteric AGH analogs, and the beneficial aromatic substituent effects are not similar in both series. In silico studies have suggested that these hits are capable of inhibiting the trypanothione reductase from the amastigote forms. CONCLUSION: The promising antileishmanial activity of three AGH's and three TSC's was characterized. These compounds presented antileishmanial activity compared with PTD, showing IC50 values ranged from 0.6 to 7.27 µM, and satisfactory SI values. Further pharmacological assays involving other Leishmania strains are in progress, which will help choose the best hits for in vivo experiments.

Magnitude dos episódios reacionais na hanseníase em serviço ambulatorial especializado / Magnitude of reactional episodes in leprosy in a specialized outpatient service

O objetivo do estudo é caracterizar os episódios reacionais segundo os dados sociodemográficos, clínicos e epidemiológicos de pacientes com hanseníase em um município hiperendêmico do estado do Piauí, Brasil, no período de 2013 a 2017. Para tanto, um estudo descritivo, transversal e retrospectivo utilizou-se os casos de hanseníase, notificados no Sistema de Informação de Agravos de Notificação (SINAN), juntamente com a ficha de dispensação de medicamentos do local em estudo. Foram realizadas análise univariada, por meio de estatística descritiva simples, e análise bivariada, utilizando o Qui-quadrado de Pearson para associar as va-riáveis quantitativas com a variável resposta do estudo, que é o momento da reação hansênica. A significância estatística foi fixada em p<0,05. Observou-se que a maioria dos episódios reacionais ocorreram durante o tratamento para hanseníase. Homens, pardos, pessoas com ensino fundamental completo ou incompleto, pedreiros, moradores da zona urbana, indivíduos dimorfos, multibacilares e com presença de grau 0 de incapacidade física, predominaram no aparecimento de reação. A reação que prevaleceu foi a do tipo 1, seguida pelo tipo 2, e em última, a reação mista. Diante disso, com-preende-se que as vulnerabilidades individuais, sociais e econômicas impactam diretamente no desenvolvimento de reação hansênica.(AU)

The objective of the study is to characterize the reactional episodes according to the sociodemographic, clinical and epidemiological data of patients with leprosy in a hyperendemic municipality in the state of Piauí, Brazil, from 2013 to 2017. For that, a study descriptive, cross-sectional and retrospective, leprosy cases notified in the Disease Information System were used of Notification (SINAN), together with the medication dispensing form place under study. Univariate analysis was performed using simple descriptive statistics, and bivariate analysis, using Pearson's Chi-square to associate the quantitative variables with the study response variable, which is the moment of the leprosy reaction. Statistical significance was set at p<0.05. It was observed that most reactional episodes occurred during treatment for leprosy. Men, browns, people with complete or incomplete elementary education, bricklayers, residents of the urban area, dimorphic, multibacillary individuals and with the presence of degree zero of physical disability, were the ones that predominated in the appearance of reaction. The reaction that prevailed was type 1, followed by type 2 and, finally, the mixed reaction. In view of this, it is understood that individual, social and economic vulnerabilities directly impact the development of leprosy reaction.

Inconsistent effects of gluten on obesity: is there a role for the haptoglobin isoforms?

BACKGROUND AND AIMS: There is no clear evidence about the effects of gluten intake on obesity. It is known that gluten's effects on gut permeability are mediated by zonulin, a protein identified as pre-haptoglobin 2, a physiological regulator of the intestinal barrier. We investigated the obesogenic and inflammatory effects of gluten and its association with the haptoglobin genotype. METHODS: This was a single blinded, crossover study, including 40 overweight or obesity women free of celiac disease. Participants adopted a gluten-free diet (GFD) for 8 weeks and consumed a gluten-free muffin (GF-M) or a gluten-containing muffin (GLU-M, 24 g gluten) for 4 weeks, switching muffin type during the subsequent 4 weeks. During a follow-up period of 4 weeks we evaluated the usual diet (UD). Food diaries were collected to estimate the macronutrient intake and dietary inflammatory index (DII®). Bodyweight and composition, resting energy expenditure (REE), and cytokines were assessed. Haptoglobin alleles (Hp1 and Hp2) were genotyped to characterize zonulin expression. RESULTS: Energy and macronutrient intakes were similar during both periods, except for protein intake, which was higher during GLU-M. DII scores indicated a more inflammatory profile during the GF-M and GLU-M periods compared to UD. No differences were observed in body composition or REE between interventions when the Hp genotype was not considered. Nonetheless, those carrying the Hp2-2 genotype (overexpressing zonulin) presented lower REE and higher levels of IL6 and IL1beta only during gluten intake (GLU-M and UD) compared to age- and body mass index-matched Hp1-1 carrier. These results suggest an obesogenic and inflammatory action of gluten only in those overexpressing zonulin (Hp2-2). CONCLUSION: These results highlight the importance of zonulin as the mediator of gluten obesogenic and inflammatory effects. Our data suggest that in the presence of gluten, zonulin release is associated with a reduction of REE and an increase of inflammatory markers that are not seen in zonulin low producers.

Inequalities in the spatial concentration of agricultural crops among the micro- and mesoregions of Minas Gerais, Brazil / Desigualdades na concentração espacial de culturas agrícolas entre as micro e mesorregiões de Minas Gerais, Brasil

ABSTRACT: The present research aimed to map and estimate the spatial autocorrelation of agricultural crops of coffee, corn, soybeans, sugarcane and beans in the state of Minas Gerais and analyzed in the period from 2011 to 2015. The planted area data were obtained of the Systematic Survey of Agricultural Production - IBGE. The Exploratory Spatial Data Analysis model was used to calculate spatial autocorrelation using the Global and Local Moran Index. Significant spatial self-correction was reported in all studied cultures (P-value <0.05). The regions with the highest concentration of planted area are located in the western portion of the state. The least significant planting regions were the municipalities located in the Jequitinhonha and Vale do Mucuri regions. The results pointed to a micro and mesoregional inequality in the distribution of agricultural activities in the mining territory that seems to reflect the incomplete agricultural modernization process that occurred in the state in the 70 s and 80 s.

RESUMO: O presente trabalho tem por objetivo mapear e estimar a autocorrelação espacial das culturas agrícolas de café, milho, soja, cana-de-açúcar e feijão no estado de Minas Gerais e analisadas no período de 2011 a 2015. Os dados de área plantada foram obtidos do Levantamento Sistemático da Produção Agrícola - IBGE. Empregou-se o modelo de Análise Exploratória de Dados Espacial com cálculo da autocorrelação espacial por meio do Índice de Moran Global e Local. Constatou-se autocorreção espacial significativa em todas as culturas estudadas (p-valor < 0,05). As regiões com maior concentração de área plantada estão localizadas na porção oeste do estado. As regiões de plantio menos expressivas foram dos municípios localizados na região do Jequitinhonha e Vale do Mucuri. Os resultados apontam para uma desigualdade micro e mesorregional da distribuição das atividades agrícolas no território mineiro, que parece refletir o processo de modernização agrícola incompleta que ocorreu no estado nas décadas de 70 e 80.

Evaluation of guanylhydrazone derivatives as inhibitors of Candida rugosa digestive lipase: Biological, biophysical, theoretical studies and biotechnological application.

This work aimed to evaluate the inhibition of Candida rugosa lipase by five guanylhydrazone derivatives through biological, biophysical and theoretical studies simulating physiologic conditions. The compound LQM11 (IC50 = 14.70 µM) presented the highest inhibition against the enzyme. Therefore, for a better understanding of the interaction process, spectroscopic and theoretical studies were performed. Fluorescence and UV-vis assays indicate a static quenching mechanism with non-fluorescent supramolecular complex formation and changing the native protein structure. The binding process was spontaneous (ΔG < 0) and electrostatic forces (ΔH < 0 and ΔS > 0) played a preferential role in stabilizing the complex ligand-lipase. The compounds were classified as non-competitive inhibitors using orlistat as a reference in competition studies. Based on the 1H NMR assays it was possible to propose the sites of ligand (epitope) that bind preferentially to the enzyme and the theoretical studies were consistent with the experimental results. Finally, LQM11 was efficient as a lipase inhibitor of the crude intestinal extract of larvae of Rhynchophorus palmarum, an important agricultural plague, showing potential for control of this pest. Within this context, the real potential of this biotechnological application deserves further studies.

Privatizar ou não privatizar? Uma análise longitudinal dos serviços de abastecimento de água no Brasil / To privatize or not to privatize? A longitudinal analysis of the Brazilian water supply services

RESUMO A privatização é frequentemente mencionada como uma potencial solução para os problemas dos serviços de abastecimento de água. Todavia, são raros os estudos sobre os reais impactos da privatização, sobretudo no Brasil. O objetivo deste trabalho foi comparar o desempenho dos prestadores públicos e privados no Brasil entre 2003 e 2013. A metodologia baseou-se na análise dos indicadores do Sistema Nacional de Informações sobre Saneamento, por meio de análises fatoriais e testes não paramétricos. Também testou-se a aplicação de modelos de regressão linear, embora sem sucesso. A análise visual dos boxplots sugeriram diferenças no desempenho entre prestadores público e privado em anos específicos. Essa situação foi confirmada por meio dos testes não paramétricos. Todavia, os serviços privatizados já tinham o melhor desempenho desde o início do período de análise, o que corrobora o argumento de que a privatização tende a ocorrer em municípios que já apresentam condições favoráveis de abastecimento de água. Estudos futuros são, finalmente, sugeridos.

ABSTRACT Privatization is often mentioned as a potential solution to water supply problems. However, few studies have addressed the real impacts of privatization, particularly in Brazil. The objective of this study was to compare the performance of public and private water supply services in Brazil between 2003 and 2013. The methodology was based on the analysis of the indicators of the Brazilian National Information System on Sanitation, through factor analyses and nonparametric tests. The study also conducted linear regression models, without success. The visual analysis of the boxplots suggested significant differences in the overall performance of public and private groups in specific years. This situation was confirmed in nonparametric tests. However, privatized services had the best performance since the beginning of the analysis period, a fact that corroborates the argument that privatization tends to occur in municipalities with more favorable water supply services. Future studies are, finally, suggested.

Resultado do teste reflexo vermelho em recém-nascidos / Result of red reflex test in newborns

Objetivo: avaliar o resultado do teste reflexo vermelho em recém-nascidos. Método: estudo quantitativo, exploratório, com amostra de 32 recém-nascidos atendidos na consulta de enfermagem em puericultura na Estratégia Saúde da Família. Usou-se oftalmoscópio direto e gradiente de cores para realizar e classificar o resultado do teste. Análise dos dados e apresentação mediante construção de frequências absoluta e relativa. Resultados: dos 32 recém-nascidos, 94% (30) apresentaram reflexo vermelho normal e 6% (2) suspeitos. O gradiente indicou reflexo ocular na cor vermelha (R01-R05) em 53% (17) dos recém-nascidos no olho direito e 59,3% (19) no esquerdo; vermelho-alaranjado (L01-L05), sendo 40,6% (13) no olho direito e 34,3% (11) no esquerdo. Os recém-nascidos cujo reflexo ocular foi considerado suspeito foram encaminhados para oftalmologista. Conclusão: a identificação precoce dos casos de reflexo vermelho alterado reforçou a relevância da atuação do enfermeiro na prevenção da cegueira infantil cujo impacto é significativo na qualidade de vida das crianças. (AU)

The polymorphism rs17782313 near MC4R gene is related with anthropometric changes in women submitted to bariatric surgery over 60 months.

OBJECTIVE: Evaluate whether the polymorphism rs17782313 near MC4R gene influences long-term outcomes after bariatric surgery. METHODS: The rs16782313 polymorphism was genotyped in 217 individuals undergoing bariatric surgery and analyzed in detail in 141 women. Data for comorbidities, BMI, excess weight loss (EWL), and body composition were obtained before and during 60 months after surgery. RESULTS: The risk allele was found in 65 (47%) of the 141 women. Pre-surgical body weight and BMI were higher in carriers of the rs17782313 polymorphism (CC + CT group) than in non-carriers (TT group) (p = 0.039 and 0.047, respectively). The number of women who acquired surgical success (EWL > 50%), was lower in CC + CT group compared to TT group (p = 0.015). The minimum BMI seen during the 60 months of follow-up was higher in CC + CT group compared to TT group (p = 0.028). The number of women who presented BMI < 30 kg/m2 (no longer classified as obesity) after 24 months of surgery was inferior in CC + CT group (6 out 35 patients - 17%) than in TT group (19 out 49 patients - 37%, p = 0.043). Moreover, the number of patients maintaining BMI > 35 kg/m2 were higher carriers (18 out 35 patients - 51%) compare to non-carriers (16 out 49 patients - 32%, p = 0.045). CONCLUSION: Women with extreme obesity carrying rs17782313 MC4R polymorphism present a higher pre-surgical BMI, are more unlikely to reach non-obesity BMI (<30 kg/m2) and tend to maintain a BMI > 35 kg/m2 that characterize treatment failure.

The medicinal chemistry of Chikungunya virus.

Arthropod-borne viruses (arboviruses) are an important threat to human and animal health globally. Among these, zoonotic diseases account for billions of cases of human illness and millions of deaths every year, representing an increasing public health problem. Chikungunya virus belongs to the genus Alphavirus of the family Togariridae, and is transmitted mainly by the bite of female mosquitoes of the Aedes aegypti and/or A. albopictus species. The focus of this review will be on the medicinal chemistry of Chikungunya virus, including synthetic and natural products, as well as rationally designed compounds.