Introdução: A obesidade é uma doença crônica de alta prevalência no Brasil associada a alta morbimortalidade, sendo a cirurgia bariátrica uma proposta válida para seu controle e tratamento. Nota-se ...que há uma escassez na literatura nacional de informações referentes a dados epidemiológicos, bem como das complicações que envolvem a cirurgia bariátrica. Objetivo: Investigar o perfil epidemiológico de indivíduos adultos submetidos a cirurgia bariátrica realizadas em hospital público de ensino no município de Juiz de Fora - MG. Método: Trata-se de um estudo de natureza analítica, observacional, transversal do tipo inquérito por meio do levantamento de prontuários. Resultados: Dos 466 indivíduos que realizaram a cirurgia bariátrica, a média de idade dos indivíduos foi de 40,2 anos e 85,2% eram do sexo feminino. Cerca de 84% dos pacientes classificaram-se com obesidade grau III. A comorbidade que mais prevaleceu no grupo pesquisado foi a hipertensão arterial (89%), a taxa de mortalidade foi de 1,9% e a frequência de complicações foram mais observadas em pacientes com obesidade grau III (68%). Conclusão: O perfil dos pacientes que buscaram abordagem cirúrgica para obesidade foi predominantemente de mulheres na terceira e quartas décadas de vida, brancas, com obesidade mórbida, tendo como comorbidade mais frequente DM e HAS, sendo que a presença de comorbidades não esteve associada ao aumento no risco de intercorrências do procedimento. A taxa geral de complicações foi baixa e o grau de obesidade esteve diretamente associado à sua ocorrência. A cirurgia bariátrica para tratamento da obesidade mostrou-se segura, com baixa taxa de complicações em um centro especializado, caracterizando, até o momento, a maior casuística nacional.
Adhesives based on vegetable tannins are already a reality in the market. However, their use is still limited due to their low mechanical resistance and weak humidity resistance. Cellulose ...nanofibrils (CNFs) are being used as reinforcing materials in various composites, resulting in an improvement of mechanical proprieties in general. The objective of this work was to evaluate the incorporation of CNFs in adhesives made of tannins obtained from the Angico tree (
). Concentrations of nanofibrils at 1, 5, and 10% were added to the adhesives on a dry basis. Tests of viscosity, pH, solids content, and gel time were performed to determine the physical proprieties of the adhesives. The Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR-FTIR) and Raman spectra measurements were also determined to understand the interaction between tannins and CNFs. Thermogravimetric analyses (TGA) were carried out to determine the thermal resistance of the composite. The FTIR and Raman characterization identified some differences in the peaks in the chemical composition of the adhesives with different percentages of CNFs. The adhesives showed no different decomposition in the thermogravimetric analyses. The shear strength in the glue line of the adhesive with 5% of CNFs in
woods was determined. Among all the adhesives analyzed, the one with 5% of CNFs produced an improvement in the mechanical resistance and humidity resistance on the glue line.
The validation of remote sensing environmental estimates requires knowledge of their spatial extent and resolution. Here, we consider coherent radio reflections routinely observed in ground-based ...global positioning system (GPS) reflectometry. Their footprint is often conceptualized in terms of the specular point (SP) and the first Fresnel zone (FFZ). Such infinitesimal point and finite zone can be generalized into a spatially continuous sensitivity kernel (SK). The SK represents a diffraction pattern, as the importance of each surface portion depends on its scattered field contribution in power and phase. We measured the SK of a GPS radio reflection under bipath reception conditions. The SK exhibited oscillations along the plane of incidence. The envelope of oscillations peaked near the SP and persisted in its decay well beyond the FFZ. Within the FFZ, sensitivity was skewed toward the antenna. This experiment suggests the feasibility of overcoming the diffraction limit and resolving features smaller than the FFZ with the exploitation of GPS diffraction patterns.
Essential oils extracted from many plant species have different biological activities, among which microbial activity stands out. Species of the genus
Piper
have antimicrobial potential against ...different species of bacteria and fungi. In this sense, the present study aimed to determine the chemical composition of the essential oil from the leaves of
Piper gaudichaudianum
(EOPG), as well as to investigate their antimicrobial activity and their modulatory effect on the Norfloxacin resistance in the
Staphylococcus aureus
SA1199B strain overproducer of the NorA efflux pump. Furthermore, their inhibitory activities on the biofilm formation as well as on the cellular differentiation of
C. albicans
were evaluated. Gas chromatography analysis identified 24 compounds, such as hydrocarbon sesquiterpenes (54.8%) and oxygenated sesquiterpenes (28.5%). To investigate the antimicrobial potential of EOPG against
S. aureus
,
E. coli
, and
C. albicans
, a microdilution assay was performed, and no intrinsic antimicrobial activity was observed. On the other hand, the oil potentiated the activity of Norfloxacin against the SA1199B strain, indicating that EOPG could be used in association with Norfloxacin against
S. aureus
strains resistant to this antibiotic. EOPG also inhibited
S. aureus
biofilm formation, as evidenced by the crystal violet assay. In the dimorphism assay, EOPG was able to inhibit the cell differentiation process in
C. albicans
. Results indicate that EOPG could be used in association with Norfloxacin in the treatment of infections caused by resistant
S. aureus
strains overproducing the NorA efflux pump. Furthermore, its ability to inhibit the formation of hyphae by
C. albicans
suggests that EOPG could also be applied in the prevention and/or treatment of fungal infections.
Specific kinds of enzymes have been used as an eco-friendly pre-treatment for mechanical extraction of cellulose nanofibrils (CNFs) from vegetal pulps. Another well-established pre-treatment is the ...2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO)–mediated oxidation, which has gained considerable attention. Pre-treatments assist in fiber swelling, facilitating mechanical fibrillation, and reducing energy consumption; however, some of these methods are extremely expensive. This work aimed to evaluate the influence of enzymatic pre-treatment with endoglucanase on the energy consumption during mechanical fibrillation of cellulose pulps. Bleached pulps from
Eucalyptus
sp. and
Pinus
sp. were pre-treated with endoglucanase enzyme compared to TEMPO-meditated oxidation. Average diameters of CNFs pre-treated with enzymes were close to that found for TEMPO-oxidized nanofibrils (TOCNFs). Results showed that enzymatic pre-treatment did not significantly modify the pulp chemical and morphological characteristics with efficient stabilization of the CNFs suspension at higher supernatant turbidity. Energy consumption of pulps treated with endoglucanase enzymes was lower than that shown by pulps treated with TEMPO, reaching up to 58% of energy savings. The enzyme studied in the pulp treatment showed high efficiency in reducing energy consumption during mechanical fibrillation and production of films with high mechanical quality, being an eco-friendly option for pulp treatment.
Next-generation sequencing (NGS) has altered clinical genetic testing by widening the access to molecular diagnosis of genetically determined rare diseases. However, physicians may face difficulties ...selecting the best diagnostic approach. Our goal is to estimate the rate of possible molecular diagnoses missed by different targeted gene panels using data from a cohort of patients with rare genetic diseases diagnosed with exome sequencing (ES). For this purpose, we simulated a comparison between different targeted gene panels and ES: the list of genes harboring clinically relevant variants from 158 patients was used to estimate the theoretical rate of diagnoses missed by NGS panels from 53 different NGS panels from eight different laboratories. Panels presented a mean rate of missed diagnoses of 64% (range 14%-100%) compared to ES, representing an average predicted sensitivity of 36%. Metabolic abnormalities represented the group with highest mean of missed diagnoses (86%), while seizure represented the group with lowest mean (46%). Focused gene panels are restricted in covering select sets of genes implicated in specific diseases and they may miss molecular diagnoses of rare diseases compared to ES. However, their role in genetic diagnosis remains important especially for well-known genetic diseases with established genetic locus heterogeneity.
Abstract Introduction Physical performance tests (PPTs) are screening tools widely available, easy to apply, and that can be performed in different environments and contexts. Scapular dyskinesis can ...be related to changes in glenohumeral angulation, acromioclavicular joint strain, subacromial space dimension, shoulder muscle strength/activation and humeral position/motion. Few studies were developed to understand the influence of aspects such as strength, stability mobility, and scapular dyskinesis on the scores of the upper extremity PPTs. Objective To compare the performance in the Closed Kinetic Chain Upper Extremity Stability Test (CKCUEST), Seated Medicine Ball Throw Test (SMBT) and Upper Quarter Y Balance Test (UQYBT) between asymptomatic adults with and without scapular dyskinesis. Methods Cross-sectional study with 20 asymptomatic individuals: 10 with scapular dyskinesis and 10 without scapular dyskinesis. The average number of touches, number of touches normalized by height, and power score in the CKCUEST, distance covered by the ball in the SMBT, reach in the medial, inferolateral, and superolateral directions, total excursion and composite score of the UQYBT were compared between both groups. Results No significant differences were found for all variables (p > 0.05). Small to moderate effect sizes were found for the scores of the CKCUEST (d = 0.16-0.78), a small effect size was found for the distance in the SBMT (d = 0.12), and small to moderate effect sizes were found for the scores of the UQYBT (d = 0.02-0.43). The scapular dyskinesis group presented better performance in all tests. Conclusion The presence of scapular dyskinesis in asymptomatic individuals is not a factor related to worse scores in upper extremity physical performance tests.
Resumo Introdução Os testes de desempenho físico (PPTs) são instrumentos de triagem amplamente disponíveis, de fácil aplicação e que podem ser realizados em diferentes ambientes e contextos. A discinesia escapular pode estar relacionada a alterações na angulação glenoumeral, tensão na articulação acromioclavicular, dimensão do espaço subacromial, força/ativação muscular do ombro e posição/movimento umeral. Poucos estudos foram desenvolvidos para entender a influência de aspectos como força, estabilidade, mobilidade e discinese escapular nos escores dos PPTs de membros superiores. Objetivo Comparar o desempenho no Teste de Estabilidade de Extremidade Superior de Cadeia Cinética Fechada (CKCUEST), Teste de Arremesso de Medicine Ball Sentada (SMBT) e Teste de Equilíbrio em Y do Quarto Superior (UQYBT) entre adultos assintomáticos com e sem discinesia escapular. Métodos Estudo transversal com amostra de 20 indivíduos assintomáticos: 10 com discinesia escapular e 10 sem discinesia escapular. Comparou-se o número médio de toques, número de toques normalizados pela altura e pontuação de potência no CKCUEST, distância percorrida pela bola no SMBT, alcance nas direções medial, inferolateral e superolateral, excursão total e escore composto do UQYBT entre ambos os grupos. Resultados Não foram encontradas diferenças significativas para todas as variáveis (p > 0,05). Tamanho de efeito pequeno a moderado foi encontrado para os escores do CKCUEST (d = 0,16-0,78), tamanho de efeito pequeno foi encontrado para a distância no SBMT (d = 0,12) e tamanho de efeito pequeno a moderado foi encontrado para as pontuações do UQYBT (d = 0,02-0,43). O grupo com discinesia escapular apresentou melhor desempenho em todos os testes. Conclusão A pre-sença de discinesia escapular em indivíduos assintomáticos não é um fator relacionado a piores escores em testes de desempenho físico de membros superiores.
Several Mendelian disorders follow an autosomal recessive inheritance pattern. Epidemiological information on many inherited disorders may be useful to guide health policies for rare diseases, but it ...is often inadequate, particularly in developing countries. We aimed to calculate the carrier frequencies of rare autosomal recessive Mendelian diseases in a cohort of Brazilian patients using whole exome sequencing (WES). We reviewed the molecular findings of WES from 320 symptomatic patients who had carrier status for recessive diseases. Using the Hardy–Weinberg equation, we estimated recessive disease frequencies (q2) considering the respective carrier frequencies (2pq) observed in our study. We calculated the sensitivity of carrier screening tests based on lists of genes from five different clinical laboratories that offer them in Brazil. A total of 425 occurrences of 351 rare variants were reported in 278 different genes from 230 patients (71.9%). Almost half (48.8%) were carriers of at least one heterozygous pathogenic/likely pathogenic variant for rare metabolic disorders, while 25.9% of epilepsy, 18.1% of intellectual disabilities, 15.6% of skeletal disorders, 10.9% immune disorders, and 9.1% of hearing loss. We estimated that an average of 67% of the variants would not have been detected by carrier screening panels. The combined frequencies of autosomal recessive diseases were estimated to be 26.39/10,000 (or ~0.26%). This study shows the potential research utility of WES to determine carrier status, which may be a possible strategy to evaluate the clinical and social burden of recessive diseases at the population level and guide the optimization of carrier screening panels.
The shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiversity patterns and processes, complicating biogeographical, ecological, and ...evolutionary studies. This deficit creates a significant taxonomic impediment to biodiversity research and conservation planning. The taxonomic impediment and the biodiversity crisis are widely recognized, highlighting the urgent need for reliable taxonomic data. Over the past decade, numerous countries worldwide have devoted considerable effort to Target 1 of the Global Strategy for Plant Conservation (GSPC), which called for the preparation of a working list of all known plant species by 2010 and an online world Flora by 2020. Brazil is a megadiverse country, home to more of the world's known plant species than any other country. Despite that, Flora Brasiliensis, concluded in 1906, was the last comprehensive treatment of the Brazilian flora. The lack of accurate estimates of the number of species of algae, fungi, and plants occurring in Brazil contributes to the prevailing taxonomic impediment and delays progress towards the GSPC targets. Over the past 12 years, a legion of taxonomists motivated to meet Target 1 of the GSPC, worked together to gather and integrate knowledge on the algal, plant, and fungal diversity of Brazil. Overall, a team of about 980 taxonomists joined efforts in a highly collaborative project that used cybertaxonomy to prepare an updated Flora of Brazil, showing the power of scientific collaboration to reach ambitious goals. This paper presents an overview of the Brazilian Flora 2020 and provides taxonomic and spatial updates on the algae, fungi, and plants found in one of the world's most biodiverse countries. We further identify collection gaps and summarize future goals that extend beyond 2020. Our results show that Brazil is home to 46,975 native species of algae, fungi, and plants, of which 19,669 are endemic to the country. The data compiled to date suggests that the Atlantic Rainforest might be the most diverse Brazilian domain for all plant groups except gymnosperms, which are most diverse in the Amazon. However, scientific knowledge of Brazilian diversity is still unequally distributed, with the Atlantic Rainforest and the Cerrado being the most intensively sampled and studied biomes in the country. In times of “scientific reductionism”, with botanical and mycological sciences suffering pervasive depreciation in recent decades, the first online Flora of Brazil 2020 significantly enhanced the quality and quantity of taxonomic data available for algae, fungi, and plants from Brazil. This project also made all the information freely available online, providing a firm foundation for future research and for the management, conservation, and sustainable use of the Brazilian funga and flora.
Summary Objectives To investigate if neurodynamic treatment is more effective than advice to remain active in patients with nerve-related leg pain. Design Parallel-group randomized controlled trial ...blinded to the outcome assessor conducted in Porto Alegre, Brazil. Participants Sixty patients recruited from the community and private practices. Intervention Patients will be randomly assigned to receive four sessions of neurodynamic treatment over two weeks comprising passive lumbar foramen opening and neurodynamic sliders plus home exercises or advice to remain active. Main outcome measures Leg pain intensity, disability, low back pain intensity, functional ability, symptoms distribution and global impression of recovery will be assessed at two and four weeks after randomization. Analysis A linear mixed model will be employed for each outcome following intention to treat principles.
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