ABSTRACT Brackish waters has been increasingly used in hydroponic systems for the cultivation of vegetables. However, its use can cause significant losses in crop production. Therefore, new alternatives to enhance the tolerance of plants to salt stress are being studied, including seed priming with hydrogen peroxide (H2O2). Thus, this study aimed to assess the seed priming with H2O2 at different periods of exposure for enhancing the production, water status and pigments concentration of crisp lettuce grown under salt stress. The experiment was carried out under protected conditions, in a completely randomized design, with four replicates. The plants were cultivated in a floating hydroponic system, containing nutrient solution. Five treatments were tested: control (absence of H2O2 and absence of NaCl); salt control (absence of H2O2 and presence of 100 mM NaCl); 0.1 mM H2O2 (12 hours) + 100 mM NaCl; 0.1 mM H2O2 (24 hours) + 100 mM NaCl, and 0.1 mM H2O2 (36 hours) + 100 mM NaCl. In general, salinity reduced the height, production of the fresh and dry mass of the shoot, relative water content, and chlorophylls concentration of lettuce plants. However, the application of 0.1 mM H2O2 for 12 and 36 hours on the seeds, enhanced the growth, water status, and chlorophylls concentration of the plants. Seed priming with H2O2 at a 0.1 mM concentration for 12 hours can be recommended to increase tolerance of lettuce plants grown in a hydroponic system under salt stress.

RESUMO As águas salobras vêm sendo cada vez mais utilizadas em sistemas hidropônicos para o cultivo de hortaliças. Entretanto, seu uso pode provocar prejuízos significativos na produção das culturas. Assim, este trabalho teve como objetivo avaliar o condicionamento fisiológico de sementes com H2O2 em diferentes períodos de exposição para melhorar a produção, estado hídrico e teor de pigmentos de alface crespa cultivada sob estresse salino. O experimento foi conduzido em condições protegidas, em delineamento inteiramente casualizado, com quatro repetições. As plantas foram cultivadas em sistema hidropônico do tipo floating, contendo solução nutritiva de Furlani. Foram testados cinco tratamentos: controle (ausência de H2O2 e ausência de NaCl); controle salino (ausência de H2O2 e presença de 100 mM NaCl); 0,1 mM H2O2 (12 horas) + 100 mM NaCl; 0,1 mM H2O2 (24 horas) + 100 mM NaCl e 0,1 mM H2O2 (36 horas) + 100 mM NaCl. Em geral, a salinidade reduziu a altura, a produção de massa fresca e seca da parte aérea, o teor relativo de água e o teor de clorofilas das plantas de alface. No entanto, a aplicação de 0,1 mM de H2O2 por 12 e 36 horas na semente melhorou o crescimento, o estado hídrico e o teor de clorofila das plantas. O condicionamento de sementes com H2O2 na concentração de 0,1 mM por 12 horas pode ser recomendado para aumentar a tolerância de plantas de alface cultivadas em sistema hidropônico sob estresse salino.

Abstract Objectives Evidence suggests that ketamine’s influence on brain-derived neurotrophic factor (BDNF) might be involved in its mechanism of rapid antidepressant action. We aimed to evaluate the differential impact of ketamine and esketamine on serum BDNF levels and its association with response patterns in treatment-resistant depression (TRD). Methods Participants (n = 53) are from a randomized, double-blind clinical trial comparing the efficacy of single-dose ketamine (0.5mg/kg, n = 27) and esketamine (0.25mg/kg, n = 26) in TRD. Depression severity was assessed before and 24 hours, 72 hours, and 7 days after the intervention, using the Montgomery-Åsberg Depression Rating Scale (MADRS). Blood samples were collected before infusion, 24 hours, and 7 days afterwards. Results There were no significant changes in BDNF levels at post-infusion evaluation points, and no difference in BDNF levels comparing ketamine and esketamine. Both drugs exhibited similar therapeutic effect. There was no association between BDNF levels and response to treatment or severity of depressive symptoms. Conclusion There was no significant treatment impact on BDNF serum levels – neither with ketamine nor esketamine – despite therapeutic response. These results suggest that ketamine or esketamine intervention for TRD has no impact on BDNF levels measured at 24 hours and 7 days after the infusion. This clinical trial is registered on the Japan Primary Registries Network: UMIN000032355.

Resumo Os terpenóides, também chamados terpenos ou isoprenóides, são uma família de produtos naturais encontrados em todos os organismos vivos. Muitas plantas são produtoras destes metabolitos secundários, que constituem uma grande parte dos óleos essenciais. Uma das características mais importantes é que os compostos são voláteis, têm odor e podem ser utilizados numa variedade de aplicações em diferentes segmentos industriais ou na medicina tradicional. O Brasil tem uma flora rica e diversificada que pode ser utilizada como fonte de pesquisa para a obtenção de novas moléculas. Dentro desta flora, vale a pena mencionar a Caatinga como um bioma exclusivamente brasileiro que possui plantas adaptadas a uma série de condições climáticas e, portanto, um armazém de compostos a serem descritos. As infecções fúngicas são doenças cada vez mais comuns, devido a isso existe uma grande procura de novos agentes com baixa toxicidade e efeitos secundários. Os cientistas devem procurar novas moléculas que exibam atividade antifúngica para o desenvolvimento de novos medicamentos contra as infecções fúngicas. Esta revisão visa analisar dados científicos dos principais estudos publicados que descrevem o uso de terpenóides e as suas aplicações biológicas como antifúngicos. isoprenóides vivos secundários essenciais voláteis tradicional portanto descritos comuns antifúngicos

Abstract Terpenoids, also named terpenes or isoprenoids, are a family of natural products found in all living organisms. Many plants produce terpenoids as secondary metabolites, and these make up a large part of essential oils. One of most important characteristic is that the compounds are volatile, have odor and can be used in a variety of applications in different industrial segments and traditional medicine. Brazil has a rich and diverse flora that can be used as a source of research for obtaining new molecules. Within the Brazilian flora, it is worth mentioning the Caatinga as an exclusively Brazilian biome where plants adapt to a specific series of weather conditions and therefore become a great storehouse of the terpenoid compounds to be described herein. Fungal infections have become increasingly common, and a great demand for new agents with low toxicity and side effects has thus emerged. Scientists must search for new molecules exhibiting antifungal activity to develop new drugs. This review aims to analyze scientific data from the principal published studies describing the use of terpenes and their biological applications as antifungals. Terpenoids isoprenoids organisms metabolites oils volatile medicine herein common emerged drugs antifungals

The cariogenic processes are mainly caused by the bacterium Streptococcus mutans (S. mutans) and consist of the demineralization of the tooth that occurs when the acid production overcomes the natural repair or if a problem occurs in the last one. In this work, we performed the synthesis of twenty-one 1,4-naphthoquinones tethered to 1,2,3-1H-triazoles (8a-8k and 9a-9j), antibacterial evaluation against the S. mutans in vitro and the acute toxicity of the better ones in vivo. We observed strong inhibition results in the disc diffusion test ranging, the halos of inhibitions, from 18.66 (± 0.57) to 29 (± 2.64) mm, and good values in the minimum inhibitory concentration (5 to 50 μg), for the compounds 9e, 9h, 9i and 9j: Furthermore, they do not have a cytotoxic effect at the concentrations tested. Besides that, in the in vivo test, they show some slight alteration in the histopathological analyses and the biochemistry. Thus, we found four potential candidates to become instruments for the treatment of cavities.

Objectives: Past suicide attempt (SA) is one of the most important risk factors for suicide death. An ideation-to-action framework posits that impulsivity, potentially traumatic events, and mental disorders also play a role in increasing suicide risk. This study aimed to assess the association between trait impulsivity, lifetime exposure to trauma, and post-traumatic stress disorder (PTSD) with SA in a sample of Brazilian college students. Methods: A total of 2,137 participants filled self-reported questionnaires consisting of a sociodemographic and clinical questionnaire, Trauma History Questionnaire, Post-Traumatic Stress Disorder Checklist – Civilian version, and Barratt Impulsiveness Scale. Results: Our findings suggest that trait impulsivity may be interpreted as exerting a distal effect on SA, even in the presence of other variables – such as trauma history, psychological neglect, and PTSD – which also increase the odds of SA. High and medium levels of impulsivity, history of trauma, and PTSD increased the likelihood of SA. Conclusions: Intervention strategies to prevent SA may target trait impulsivity and exposure to traumatic experiences.

Abstract Objective: To explore the relationship of undernutrition and the short duration of breastfeeding with child development of children 0–66 months of age residing in Ceará, Brazil. Methods: The authors of the present study utilized population-based data from children enrolled in the Study on Maternal and Child Health in Ceará, Brazi (PESMIC). Children’s development was assessed with the Ages and Stages Questionnaire third version, validated in Brazil. Undernutrition was accessed through anthropometric measures obtained by trained staff. Breastfeeding information was obtained through the mothers' report and confirmed in the child's governmental booklet. The authors used logistic regressions adjusted for sample clusters used in PESMIC design in a theoretical model for known determinants of child development following the World Health Organization nurturing framework. Results: A total of 3,566 children were enrolled in the sixth PESMIC study and had their development assessed. The authors found that 8.2%, 3.0%, 2.1%, and 3.6% of children were stunted, underweight, or wasted, at the time of the interview, respectively. All studied factors were associated with a higher prevalence of child development impairment in at least one of the assessed domains. Underweight was the factor with the strongest effect, with an adjusted odds ratio (AOR) of 4,14 (2,26–7,58), p < 0.001. Breastfeeding for up to two months compared to more than six months (AOR2,08 (1,38–3,12)) was also associated. Conclusions: The authors found that undernutrition and short duration of breastfeeding are associated with development outcomes among Brazilian children. As a result, integrated nutritional programs may improve child development outcomes.

Resumo Infecções do trato urinário são responsáveis pela maior parte das infecções humanas, sendo causadas por bactérias, fungos, protozoários, e por microrganismos associados. O objetivo deste trabalho foi determinar a frequência de agentes causadores de infecções vaginais nos exames citológicos de rotina, bem como avaliar as características dos esfregaços positivos. Foi realizada uma pesquisa do tipo documental retrospectiva de aspecto descritivo, com abordagem quantitativa, em um Laboratório de Patologia Clínica de Maceió-AL. Nesse sentido, os resultados dos exames colpocitológicos para Trichomonas vaginalis, Gardnerella vaginalis, Candida spp e HPV foram organizados em um banco de dados, contendo os resultados para estes agentes, bem como a coinfecção bacteriana, protozoária, fúngica e viral. A amostra foi composta por 18.645 mulheres que realizaram exame colpocitológico, no período de 2013 a 2017. Destes exames analisados 27,4% em 2013, 10,9% em 2014, 10,6% em 2015, 15,2% em 2016 e 13,67% em 2017, estavam dentro do limite da normalidade, porém mais que a metade desses exames analisados apresentou algumas infecções causadas por agentes inespecíficos ou microbiológicos. Do total de laudos analisados, 4.073 (21,84%), apresentaram inflamações causadas por algum tipo de agente infeccioso, com a seguinte ordem de frequência: G. vaginalis, e T. vaginalis. Além disto, foi possível confirmar a elevada frequência de coinfecção entre G. vaginalis e Candida spp. Os índices de infecções genitais nesse trabalho mostram que há um problema de saúde pública que deve ser controlado, apontando uma necessidade maior de acompanhamento, orientações e de ações para uma maior conscientização para prevenir esses problemas.

Abstract Urinary tract infections are responsible for most human infections, these are caused by bacteria, fungi, protozoa and associated microorganisms. The goal of this study was to determine the rate of vaginal infection-causing agents in routine cytological exams and also to evaluate the characteristics of positive tested Pap smears. A retrospective documental with descriptive aspect research was performed in a Clinical Pathology laboratory from Maceió-AL. The results of the Pap smears exams for Trichomonas vaginalis, Gardnerella vaginalis, Candida spp and HPV were arranged in a database as well as other data such as bacterial, protozoan, fungal and viral coinfections. The sample was composed by 18.645 women who have undergone Pap smear exams from 2013 to 2017. Of these analyzed exams, 27.4% in 2013, 10.9% in 2014, 10.6% in 2015, 15.2% in 2016 and 13.67% in 2017 were within normal range, however more than half of these exams presented some infections caused by unspecific or microbiological agents. By analyzing all the reports, 4.073 (21.84%) presented inflammations caused by some species of infectious agent with the following rate order: G. vaginalis and T. vaginalis. Furthermore, it was possible to confirm high rates of coinfection by and Candida spp. The rate of genital infections in this study highlights that there is a public health matter that must be controlled, which points a greater need for monitoring, guidance and actions towards greater awareness in order to prevent these problems.

Resumo Esta pesquisa teve como objetivo realizar um levantamento das características socioambientais e estudo etnobotânico de plantas medicinais utilizadas por uma comunidade tradicional do nordeste brasileiro, Alagoas, Brasil. O estudo se deu por meio de visitas com aplicação de um questionário contendo perguntas relacionadas aos fatores socio-econômicos e sobre a diversidade das plantas utilizadas como medicinais. O trabalho foi realizado no período de março/2019 a fevereiro/2020, onde foram entrevistadas famílias e catalogadas amostras de plantas para identificação botânica. A população estudada, com 24 entrevistados, foi composta por moradores da comunidade Quilombola Pau D’arco da cidade de Arapiraca - Alagoas. Dos moradores entrevistados, 15 (62,5%) apresentavam idade entre 56 e 80 anos, 11 dos entrevistados cerca de 46%, são naturais da comunidade e 13 (54%) possuíam ensino fundamental incompleto. Ao todo, foram citadas 30 espécies de plantas utilizadas para fins terapêuticos, das quais apresentam maior utilização as plantas contra a hipertensão arterial (Salvia rosmarinus Schleid), diabetes Mellitos (Croton heliotropiifolius Kunth), dor e inflamação (Alternanthera tenella Colla). As espécies citadas estão relacionadas a inúmeras utilizações medicinais, entre os quais predominaram as doenças associadas ao aparelho cardiovascular e processos inflamatórios. O chá é principal forma de preparo das plantas. Percebe-se que as plantas medicinais são amplamente utilizadas por essa comunidade quilombola e o cultivo no quintal é considerado uma tradição.

Abstract The aim of this research is to make a survey of the socio-environmental characteristics and the ethnobotanical study of medicinal plants used in a traditional community in the Brazilian Northeast, Alagoas. The study was made based on visits with the application of a questionnaire with questions related to the socio-economic element and on the diversity of plants used in herbal medicine. The research was made from March/2019 to February/2020, where families and interviewed plant exhibitors were interviewed for botanical identification. The studied community, which were 24 interviewees, was compiled by residents of the Quilombola community from Pau D’arco in Arapiraca city - Alagoas. Residents interviewed, 15 (62.5%) attended between 56 to 80 years, 11 interviewees about 46% were born in the community and 13 (54%) had a fundamentally incomplete nature. At the end, there were mentioned 30 plant species used for phytotherapeutic purposes, from which presents bigger usage as plants against arterial hypertension (Salvia rosmarinus Schleid), diabetes Mellitos (Croton heliotropiifolius Kunth), pain and inflammation (Alternanthera tenella Colla), present the biggest number of species in the community. The species cited are related to numerous medicinal uses, among which there will be predominant associations associated with cardiovascular and inflammatory processes. The tea is the main way of preparing plants. It is perceived that medicinal plants are only widely used by this Quilombola community of and growth of the crops in the backyard are considered a tradition.

Resumo Os acidentes escorpiônicos apresentam-se como um grande problema de saúde pública em virtude da grande ocorrência com potencial gravidade. Nesse sentido, o trabalho teve como objetivo analisar a ocorrência de acidentes escorpiônicos em um município do nordeste brasileiro. Foi realizado um estudo descritivo, de caráter exploratório, com abordagem quantitativa em que foram utilizados dados secundários obtidos no Sistema de Informação de Agravos de Notificação (SINAN), no período de 2008 a 2018. Também foram utilizados dados como bairro, presença de feiras livres e a existência de saneamento básico e dados climáticos como temperatura e estação do ano. O geoprocessamento foi utilizado para identificar as possíveis alterações no ambiente. No período analisado, foram registrados 9,330 casos de acidentes com escorpião, com média de 848 notificações anuais. Os acidentes escorpiônicos ocorreram com mais frequência em mulheres (5,686; 60,94%). Em indivíduos na faixa etária de 20 a 29 anos (1,727; 18,51%) foram mais frequentes a picada de escorpião. Com relação ao local das picadas destacaram-se o pé (3,515; 37,67%), seguido da mão (2,818; 30,20%). Não foi observada relação estatisticamente significativa entre os fatores clímáticos e os acidentes escorpiônicos. Foi observado elevado número de casos de acidentes escorpiônicos nos últimos 11 anos estudados. Ficou evidente que durante o período de estudo não existiu relação estatística quando se correlacionou fatores climáticos aos acidentes escorpiônicos. Por sua vez, ao verificar os resultados da análise de geoprocessamento foi visto que fatores antrópicos têm sido motivadores da potencialização da ocorrência desses acidentes.

Abstract Scorpionic accidents are a major public health problem due to the high occurrence with potential seriousness. In this manner, the research aimed to analyze the occurrence of scorpionic accidents in a municipality in the northeastern of Brazil. An exploratory, descriptive study was made, with a quantitative approach, using secondary data which was gotten from the Notifiable Diseases Information System (SINAN), from 2008 to 2018. Data such as neighborhood, presence of street markets were also used, and the existence of sanitation and climatic data such as temperature and season. Geoprocessing was used to identify possible changes in the environment. In the analyzed period, 9,330 cases of scorpion accidents were recorded, with an average of 848 annual notifications. Scorpionic accidents occurred more frequently in women (5,686; 60.94%). Individuals aged 20 to 29 years (1.727; 18.51%) were more frequent to scorpion stings. Regarding the body parts where the stings were made, the highlights were on the foot (3.515; 37.67%) followed by the hand (2.818; 30.20%). No statistically significant relation was observed between climatic factors and scorpionic accidents. However, the high number of cases of scorpionic accidents was observed in the last 11 years studied. It was evident that during the study period there was no statistical relationship when climatic factors were correlated to scorpionic accidents. On its turn, when it was verified the results of the geoprocessing analysis, it was seen that anthropic factors have been motivating the potentiation of the occurrence of these accidents.

Abstract Introduction Anhedonia is defined as the reduced ability to feel pleasure and is a core symptom of various psychiatric disorders such as depression and schizophrenia. The Snaith-Hamilton Pleasure Scale (SHAPS) was developed to assess the presence of anhedonia. The objective of this study was to assess the psychometric properties of the Brazilian Portuguese version of the SHAPS. Methods In this study, the SHAPS (14 items) was translated into Brazilian Portuguese and validated using data obtained from 228 subjects within a clinical sample. Psychometric properties were assessed using item response theory (logistic models) and classical test theory (Cronbach’s alpha). We checked for external validity using a non-parametric correlation with an independent scale: Hospital Anxiety and Depression Scale – Depression subscale (HAD-D). Results The SHAPS presented good internal consistency, with a Cronbach’s α coefficient of 0.759 and adequacy to an IRT 1 parameter logistic (Rasch) model. The SHAPS presented significant correlation with the external measure HAD-D, with Spearman’s ρ = 0.249 (S = 1368914; p < 0.001). Conclusion These results suggest that the Brazilian Portuguese version of the SHAPS is a reliable and valid instrument to assess hedonic tone.

Abstract One of the major health security challenges of the 21st century is the occurrence of microbial infections and bacterial complications that could affect 10 million people by 2050. On the biomaterial field, implant metallic currently replaces partial or total body parts and can fail to be integrated into the body due to infections. This study performs two combined surface modifications on Ti-30Ta alloy, in order to obtain an infection-resistance and osseointegration surface on metallic implants to be tested within bacterial biofilm. The Group 1 investigated surface modifications by the anodization process in the electrolyte glycerol + NH4F 0.25% at 30V- 9 hours and annealed in 530°C (5°C/min). The Group 2 underwent the same process as Group 1 and, additionally, the samples were immersed in 0.3 M CaCl2 and 0.5 M Na2HPO4 solutions for hydroxyapatite growth. The substrate was characterized using scanning electron microscopy (SEM), X-ray diffractometer (XRD) and dynamic contact angle. S. epidermidis bacterial adhesion and biofilm formation. The results indicated that the Group 1 shows a higher antimicrobial activity, hydrophilic behavior and potential to be used for metallic implant applications. The Group 2 with the hydroxyapatite film coating did not have an improvement in the antimicrobial response.

Endogenous and environmental factors can influence the lipid contents of fishes among which, in the Amazon River, seasonal dynamics influences stand out. Herein, nine most consumed Amazonian fish species had their lipid composition evaluated in terms of effects of tissue, season and eating habits. Higher amounts of lipids were obtained from fish livers than dorsal muscles. Statistical analysis has shown that Amazonian fishes presented different lipid profiles according to their eating habits, which mainly comprised saturated fatty acids to distinguish detritivorous livers, and linolenic acid, cholesterol, polar lipids for carnivorous and piscivorous fish muscles. Furthermore, in Amazonian fish, some very important lipids for human nutrition were found, such as w-3 and w-6 fatty acids whose availability depended on the tissue metabolism and fishes’ eating habit along with the seasonal periods. For example, our findings indicated that the piscivorous fish C. monoculus presented higher levels of linoleic acid for livers than linolenic acid and the opposite occurred for muscles. The w-6 and w-3 fatty acids ratio was influenced by the season dynamic of the Amazon River and availability of food according to each specific eating habit, pointing mainly to the piscivorous fishes as the healthiest fish for human consumption.

Resumo Fundamento Eventos isquêmicos recorrentes decorrem de instabilidade de placa aterosclerótica, enquanto morte após um evento isquêmico decorre da gravidade do insulto. A natureza diversa desses tipos de eventos pode fazer com que dados clínicos e anatômicos tenham diferentes capacidades prognósticas a depender do tipo de desfecho. Objetivo Identificar as predileções prognósticas de dados clínicos e dados anatômicos em relação a desfechos coronários fatais e não fatais durante hospitalização de pacientes com síndromes coronarianas agudas (SCA). Métodos Pacientes consecutivamente admitidos por SCA que realizaram coronariografia foram recrutados. O escore SYNTAX foi utilizado como modelo anatômico e o escore GRACE como modelo clínico. A capacidade preditora desses escores foi comparada quando à predição de desfechos isquêmicos não fatais (infarto ou angina refratária) e de morte cardiovascular durante hospitalização. Significância estatística foi definida por p < 0,05. Resultados Entre 365 indivíduos, 4,4% foi a incidência de óbito hospitalar e 11% de desfechos isquêmicos não fatais. Para morte cardiovascular, ambos os escores — SYNTAX e GRACE — apresentaram capacidade discriminatória, com estatísticas-C similares: 0,80 (95%IC: 0,70–0,92) e 0,89 (95%IC 0,81–0,96), respectivamente — p=0,19. Quantos aos desfechos isquêmicos não fatais, o escore SYNTAX apresentou valor preditor (estatística-C = 0,64; 95%IC 0,55–0,73), porém o escore GRACE não mostrou associação com esse tipo de desfecho (estatística-C = 0,50; 95%IC: 0,40–0,61) — p=0,027. Conclusão Os modelos clínico e anatômico predizem satisfatoriamente morte cardiovascular em SCA, enquanto a recorrência de instabilidade coronária é melhor prevista por características anatômicas do que por dados clínicos. (Arq Bras Cardiol. 2020; 115(2):219-225)

Abstract Background Recurrent ischemic events are mediated by atherosclerotic plaque instability, whereas death after an ischemic event results from gravity of insult and ability of the organism to adapt. The distinct nature of those types of events may respond for different prediction properties of clinical and anatomical information regarding type of outcome. Objective To identify prognostic properties of clinical and anatomical data in respect of fatal and non-fatal outcomes of patients hospitalized with acute coronary syndromes (ACS). Methods Patients consecutively admitted with ACS who underwent coronary angiography were recruited. The SYNTAX score was utilized as an anatomic model and the GRACE score as a clinical model. The predictive capacity of those scores was separately evaluated for prediction of non-fatal ischemic outcomes (infarction and refractory angina) and cardiovascular death during hospitalization. It was considered as significant a p-value <0,05. Results EAmong 365 people, cardiovascular death was observed in 4,4% and incidence of non-fatal ischemic outcomes in 11%. For cardiovascular death, SYNTAX and GRACE score presented similar C-statistic of 0,80 (95% IC: 0,70 – 0,92) and 0,89 (95% IC 0,81 – 0,96), respectively – p = 0,19. As for non-fatal ischemic outcomes, the SYNTAX score presented a moderate predictive value (C-statistic = 0,64; 95%IC 0,55 – 0,73), whereas the GRACE score did not presented association with this type of outcome (C-statistic = 0,50; 95%IC 0,40-0,61) – p = 0,027. Conclusion Clinical and anatomic models similarly predict cardiovascular death in ACS. However, recurrence of coronary instability is better predicted by anatomic variables than clinical data. (Arq Bras Cardiol. 2020; [online].ahead print, PP.0-0)

Resumo Características físicas, químicas e mineralógicas das argilas in natura utilizadas nas indústrias interferem no processo produtivo e produto cerâmico final. Foram caracterizadas argilas in natura de 4 indústrias do Sul do Brasil pelas técnicas de DRX, FRX, FTIR, DSC e MEV. Além disso, o potencial pozolânico também foi verificado com base no teor de caulinita das amostras in natura. A argila que apresentou o maior potencial pozolânico teve quantidade de caulinita de 69,7%. O uso de 40% de resíduo de tijolo produzido com esta argila (tamanho de partícula de 75 µm) substituindo cimento Portland em uma argamassa resultou em aumento de 51% na resistência à compressão em 28 dias. A análise dos produtos de hidratação resultantes da reação de Ca(OH)2 da hidratação do cimento com o resíduo cerâmico mostrou a presença de Al2O3.2SiO2 formando o gel de C-S-H.

Abstract The physical, chemical, and mineralogical characteristics of raw clays used in the industries interfere greatly in the production process and final ceramic product. Raw clays from 4 industries in the South of Brazil were characterized by the XRD, XRF, FTIR, DSC, and SEM techniques. In addition, the pozzolanic potential was also verified based on the kaolinite content of the raw samples. The raw clay that presented the highest pozzolanic potential had a quantity of kaolinite of 69.7%. The use of 40% of the brick waste produced with this raw clay (particle size of 75 μm) replacing Portland cement in a mortar resulted in a gain of 51% in compressive strength at 28 days. The analysis of the hydration products resulting from the Ca(OH)2 reaction from the cement hydration with the ceramic waste showed the presence of Al2O3.2SiO2 forming the C-S-H gel.

Resumo Objetivo: Caracterizar o frênulo lingual de recém-nascidos a termo, utilizando dois protocolos diferentes e verificar a relação do frênulo lingual com o aleitamento materno. Método: A amostra não probabilística foi constituída por 449 binômios mãe/bebê. Para a avaliação anatomofuncional do frênulo, utilizou-se o protocolo de avaliação do frênulo lingual para bebês “Teste da Linguinha” e o Bristol Tongue Assessment Tool. A mamada foi avaliada com o protocolo proposto pelo UNICEF. Foram criados escores (bom, regular, ruim) para avaliar cada aspecto da mamada a ser observada. Os resultados foram analisados através de estatísticas descritivas e inferenciais e testes de associação (Qui-quadrado de Pearson e Exato de Fisher). Resultados: O estudo mostrou que 14 bebês apresentaram alteração de frênulo lingual, nos quais três com dificuldade durante a sucção, necessitando de frenotomia na primeira semana de vida e 11 sem dificuldades durante a amamentação. Quanto à avaliação da mamada, 410 binômios mãe/bebê apresentaram o escore bom, 36 regular e 3 ruim. Houve associação estatisticamente significativa entre o protocolo “Teste da Linguinha” e amamentação (p = 0,028) e entre o protocolo Bristol Tongue Assessment Tool e amamentação (p = 0,028). Conclusão: Alterações no frênulo lingual estão associadas a interferências na qualidade da amamentação, sendo importante a avaliação do frênulo lingual em recém-nascidos.

Abstract Objective: To characterize the lingual frenulum of full-term newborns using two different protocols and to assess the association of the lingual frenulum with breastfeeding. Methods: This non-probabilistic sample consisted of 449 mother/baby binomials. For the anatomo-functional evaluation of the frenulum, the Neonatal Tongue Screening Test and the Bristol Tongue Assessment Tool were used for the evaluation of the lingual frenulum. Breastfeeding was evaluated using the protocol proposed by UNICEF. Scores were created (good, fair, poor) to evaluate every aspect of the breastfeeding to be observed. The results were analyzed through descriptive and inferential statistics and association tests (Pearson's chi-squared and Fisher's exact test). Results: The study showed that 14 babies had a lingual frenulum alteration, of whom three had difficulties during suction, requiring frenotomy in the first week of life, whereas 11 had no difficulties during breastfeeding. Regarding the breastfeeding evaluation, 410 mother/baby binomials had good, 36 regular, and three had bad scores. There was a statistically significant association between the tongue-tie test protocol and breastfeeding (p = 0.028) and between the Bristol Tongue Assessment Tool protocol and breastfeeding (p = 0.028). Conclusion: Alterations in the lingual frenulum are associated with interferences in the quality of breastfeeding and thus, evaluation of the lingual frenulum in newborns is important.