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Abstract Obesity, associated with the intake of a high-fat diet (HFD), and anxiety are common among those living in modern urban societies. Recent studies suggest a role of microbiome-gut-brain axis signaling, including a role for brain serotonergic systems in the relationship between HFD and anxiety. Evidence suggests the gut microbiome and the serotonergic brain system together may play an important role in this response. Here we conducted a nine-week HFD protocol in male rats, followed by an analysis of the gut microbiome diversity and community composition, brainstem serotonergic gene expression (tph2, htr1a, and slc6a4), and anxiety-related defensive behavioral responses. We show that HFD intake decreased alpha diversity and altered the community composition of the gut microbiome in association with obesity, increased brainstem tph2, htr1a and slc6a4 mRNA expression, including in the caudal part of the dorsomedial dorsal raphe nucleus (cDRD), a subregion previously associated with stress- and anxiety-related behavioral responses, and, finally, increased anxiety-related defensive behavioral responses. The HFD increased the Firmicutes/Bacteroidetes ratio relative to control diet, as well as higher relative abundances of Blautia, and decreases in Prevotella. We found that tph2, htr1a and slc6a4 mRNA expression were increased in subregions of the dorsal raphe nucleus in the HFD, relative to control diet. Specific bacterial taxa were associated with increased serotonergic gene expression in the cDRD. Thus, we propose that HFD-induced obesity is associated with altered microbiome-gut-serotonergic brain axis signaling, leading to increased anxiety-related defensive behavioral responses in rats.

https://doi.org/10.1186/s40659-024-00505-1

Influence of sealer type on treatment outcome of teeth with apical periodontitis: a systematic review periodontitis
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Amoroso-Silva, Pablo

; Brasil, Sabrina C.

; Pérez, Alejandro R.

; Tolentino, Elen S.

; Alves, Flávio R. F.

; Siqueira Jr, José F.

; Rôças, Isabela N.

Brazilian Dental Journal

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oct 2023, Volume 34 N. 5 Pages 1 - 21

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo O objetivo deste artigo foi avaliar a influência do cimento no resultado do tratamento ou retratamento endodôntico não cirúrgico de dentes permanentes com periodontite apical (registro PROSPERO: CRD42020205951). Metodologia: Uma revisão sistemática de estudos clínicos originais foi realizada seguindo as diretrizes PRISMA para responder se o tipo de cimento usado no tratamento ou retratamento endodôntico influencia a reparação da periodontite apical determinada por parâmetros clínicos e radiográficos. Pesquisas eletrônicas foram realizadas no PubMed, Embase, Web of Science, Scopus e no banco de dados Cochrane Library, até maio de 2023. A literatura cinza e uma pesquisa manual das listas de referências também foram realizadas. O risco de viés foi avaliado usando Cochrane RoB2 para os estudos randomizados e Newcastle-Ottawa Scale (NOS) para coorte prospectiva e retrospectiva e estudos de caso-controle. Resultados: Entre 1.046 estudos, um total de 819 foram selecionados por título e resumo, resultando em 23 para revisão de texto completo. No total, 11 estudos preencheram os critérios de inclusão (1.467 pacientes/dentes com periodontite apical). A avaliação de qualidade usando RoB2 incluiu cinco estudos randomizados de controle, dos quais quatro tinham risco médio e um tinha baixo risco de viés. De acordo com a escala NOS, cinco estudos foram classificados com baixo risco e um estudo foi considerado com médio risco de viés. O tipo de cimento e as técnicas de obturação variaram, e o tempo médio de acompanhamento foi de 3,7 anos. A maioria dos estudos utilizou critérios radiográficos bidimensionais para avaliar o resultado do tratamento. Oito estudos não encontraram diferenças significativas ao comparar os cimentos. As taxas de reparação variaram de 56,7% a 90%. Conclusões: Os resultados desta revisão suportam que os cimentos endodônticos atuais não parecem influenciar o resultado do tratamento de dentes permanentes com periodontite apical. Embora os estudos tiveram médio e baixo risco de viés, os resultados devem ser interpretados com cautela. Mais estudos randomizados de resultados de longo prazo comparando materiais de obturação são necessários para fortalecer essa afirmação e permitir uma meta-análise. registro PROSPERO CRD42020205951. CRD42020205951 CRD . CRD42020205951) Metodologia PubMed Embase Science Library 2023 RoB NewcastleOttawa Newcastle Ottawa NOS (NOS casocontrole. casocontrole caso controle. controle caso-controle Resultados 1046 1 046 1.04 81 resumo 2 completo 1.467 1467 467 (1.46 pacientesdentes pacientes apical) 37 3 7 3, anos 567 56 56,7 90 90% Conclusões cautela metaanálise. metaanálise meta análise. análise meta-análise CRD4202020595 202 104 04 1.0 8 1.46 146 46 (1.4 5 56, 9 CRD420202059 20 10 0 1. 1.4 14 4 (1. CRD42020205 (1 CRD4202020 ( CRD420202 CRD42020 CRD4202 CRD420 CRD42 CRD4

Abstract The purpose of this article was to Evaluate the influence of sealer on the outcome of non-surgical endodontic treatment or retreatment of permanent teeth with apical periodontitis (PROSPERO registration: CRD42020205951). Methodology: A systematic review of original clinical studies was carried out following PRISMA guidelines to answer whether the type of sealer used in endodontic treatment or retreatment influences the repair of apical periodontitis determined by clinical and radiographic parameters. Electronic searches were performed in PubMed, Embase, Web of Science, Scopus, and the Cochrane Library database, until May 2023. Gray literature and a hand search of reference lists were also performed. The risk of bias was assessed using Cochrane RoB2 for randomized trials and the Newcastle-Ottawa Scale (NOS) for prospective and retrospective cohort and case-control studies. Results: Among 1046 studies, a total of 819 were selected by title and abstract, resulting in 23 for full-text review. In total, 11 studies met the inclusion criteria (1467 patients/teeth with apical periodontitis). The quality assessment using RoB2 included five randomized control trials, of which four had medium risk and one had a low risk of bias. According to the NOS scale, five studies were classified as low risk and one study was considered as medium risk of bias. The sealer type and obturation techniques varied, and the mean follow-up time was 3.7 years. Most studies used two-dimensional radiographic criteria to assess the treatment outcome sealers and not cements. Eight studies did not find significant differences when comparing cements. The healing rates ranged from 56.7% to 90%. Conclusions: The results of this review support that the current endodontic sealers do not seem to influence the treatment outcome of permanent teeth with apical periodontitis. Although the studies had medium and low risk of bias, the results should be interpreted with caution. More randomized studies of long-term outcomes comparing filling materials are needed to strengthen this claim and allow for a meta-analysis. nonsurgical non surgical PROSPERO registration CRD42020205951. CRD42020205951 CRD . CRD42020205951) Methodology parameters PubMed Embase Science Scopus database 2023 RoB NewcastleOttawa Newcastle Ottawa (NOS casecontrol case Results 104 81 abstract 2 fulltext full text 1 1467 (146 patientsteeth patients periodontitis) scale varied followup follow up 37 3 7 3. years twodimensional two dimensional cements 567 56 56.7 90 90% Conclusions caution longterm long term metaanalysis. metaanalysis meta analysis. analysis meta-analysis CRD4202020595 202 10 8 146 (14 5 56. 9 CRD420202059 20 14 (1 CRD42020205 ( CRD4202020 CRD420202 CRD42020 CRD4202 CRD420 CRD42 CRD4

https://doi.org/10.1590/0103-6440202305471

Three Months of Composting Are Enough to Eliminate the Fowl Typhoid Bacteria
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IC, Campos

; LB, Rodrigues Alves

; MMS, Saraiva

; TS, Lima

; VA, Ferreira

; TS, Ferreira

; GB, Viana

; AM, Almeida

; MS, Rubio

; Jr A, Berchieri

Brazilian Journal of Poultry Science

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2023, Volume 25 N. 3 elocation eRBCA-2022-1757

Abstract: En | Text: En | PDF: En

ABSTRACT The composting technique has been increasingly highlighted in poultry production units, as an efficient and low-cost solution for the destination of carcasses. The process is based on the accelerated decomposition of organic material under high temperatures, associated with eliminating pathogenic microorganisms. This study aims to evaluate the effectiveness and the time necessary for the elimination of Salmonella Gallinarum in carcasses of poultry submitted to the composting process. The composting was carried out following the models used in the field, and microbiological analysis was performed in five different periods: 45, 90, 120, 150 and 180-days after closing the composter. After 90 days of experiment and in the subsequent analysis, the elimination of the bacteria in 100% of the samples was verified, validating the composting process as an effective method for eliminating S. Gallinarum in poultry carcasses, when respecting the period necessary for the elimination of the bacteria and the good quality of the structure adopted for the process. units lowcost low cost temperatures microorganisms field periods 45 120 15 180days 180 composter 9 100 verified S 4 12 1 18 10

https://doi.org/10.1590/1806-9061-2022-1757

Estratégia Fármaco-Invasiva no Infarto do Miocárdio: Análise Descritiva, Apresentação de Sintomas Isquêmicos e Preditores de Mortalidade FármacoInvasiva Fármaco Invasiva Miocárdio Descritiva
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Bianco, Henrique Tria

; Povoa, Rui

; Izar, Maria Cristina

; Alves, Claudia Maria Rodrigues

; Barbosa, Adriano Henrique Pereira

; Bombig, Maria Teresa Nogueira

; Gonçalves Jr, Iran

; Luna Filho, Bráulio

; Aguirre, Ana Caroline

; Moraes, Pedro Ivo de Marqui

; Almeida, Dirceu

; Moreira, Flávio Tocci

; Povoa, Fernando Focaccia

; Stefanini, Edson

; Caixeta, Adriano Mendes

; Bacchin, Amanda S.

; Moisés, Valdir Ambrósio

; Fonseca, Francisco A.H.

Arquivos Brasileiros de Cardiologia

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nov 2022, Volume 119 N. 5 Pages 691 - 702

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Fundamento O infarto do miocárdio com elevação do segmento-ST (IAMCSST) é definido por sintomas acompanhados por alterações típicas do eletrocardiograma. Entretanto, a caracterização dos sintomas isquêmicos não é clara, principalmente em subgrupos, como mulheres e idosos. Objetivos Analisar a tipificação dos sintomas isquêmicos, métricas temporais e observar a ocorrência de desfechos intra-hospitalares, em análise dos escores preditivos, em pacientes com IAMCSST, em estratégia fármaco-invasiva. Métodos Estudo envolvendo 2.290 pacientes. Tipos de apresentações clínicas pré-definidas: dor típica, dor atípica, dispnéia, sincope. Medimos o tempo entre o início dos sintomas à demanda pelo atendimento e o intervalo entre a chegada à unidade-médica e trombólise. Odds-ratios (OR; IC-95%) foram estimadas em modelo de regressão. Curvas ROCs foram construídas para preditores de mortalidade. Nível de significância adotado (alfa) foi de 5%. Resultados Mulheres apresentaram alta prevalência de sintomas atípicos; maior tempo entre o início dos sintomas e a procura por atendimento; atraso entre a chegada ao pronto-socorro e a fibrinólise. A mortalidade hospitalar foi de 5,6%. Predição de risco pela classificação Killip-Kimball: AUC: [0,77 (0,73-0,81)] em classe ≥II. Subgrupos estudados [OR (IC-95%)]: mulheres [2,06 (1,42-2,99); p=0,01]; insuficiência renal crônica [3,39 (2,13-5,42); p<0,001]; idosos [2,09 (1,37-3,19) p<0,001]; diabéticos [1,55 (1,04-2,29); p=0,02]; obesos 1,56 [(1,01-2,40); p=0,04]; acidente vascular cerebral prévio [2,01 (1,02-3,96); p=0,04] correlacionaram-se com maiores taxas de mortalidade. Conclusão Apesar das mais altas taxas de mortalidade em alguns subgrupos, disparidade significativa persiste nas mulheres, com atrasos no reconhecimento dos sintomas e trombólise imediata. Destaca-se a aplicabilidade do escore Killip-Kimball na predição, independentemente da apresentação clínica. segmentoST segmento ST IAMCSST (IAMCSST eletrocardiograma Entretanto clara subgrupos intrahospitalares, intrahospitalares intra hospitalares, hospitalares intra-hospitalares preditivos fármacoinvasiva. fármacoinvasiva fármaco invasiva. invasiva fármaco-invasiva 2290 2 290 2.29 prédefinidas pré definidas pré-definidas típica atípica dispnéia sincope unidademédica unidade médica Oddsratios Odds ratios OR (OR IC95% IC95 IC 95% 95 IC-95% regressão alfa (alfa 5 5% atípicos prontosocorro pronto socorro fibrinólise 56 6 5,6% KillipKimball Killip Kimball AUC 0,77 077 0 77 [0,7 0,730,81 073081 0,73 0,81 73 81 (0,73-0,81) II ≥II (IC-95%)] 2,06 206 06 [2,0 1,422,99 142299 1,42 2,99 1 42 99 (1,42-2,99) p=0,01 p001 p 01 p=0,01] 3,39 339 3 39 [3,3 2,135,42 213542 2,13 5,42 13 (2,13-5,42) p<0,001 p0001 001 p<0,001] 2,09 209 09 1,373,19 137319 1,37 3,19 37 19 (1,37-3,19 1,55 155 55 [1,5 1,042,29 104229 1,04 2,29 04 29 (1,04-2,29) p=0,02 p002 02 p=0,02] 156 1,5 1,012,40 101240 1,01 2,40 40 [(1,01-2,40) p=0,04 p004 2,01 201 1,023,96 102396 1,02 3,96 96 (1,02-3,96) correlacionaramse correlacionaram se imediata Destacase Destaca predição clínica 229 2.2 IC9 9 IC-95 5,6 0,7 07 7 [0, 730 0,730,8 07308 073 081 0,8 8 (0,73-0,81 (IC-95%) 2,0 20 [2, 422 1,422,9 14229 142 1,4 299 2,9 4 (1,42-2,99 p=0,0 p00 3,3 33 [3, 135 2,135,4 21354 213 2,1 542 5,4 (2,13-5,42 p<0,00 p000 00 373 1,373,1 13731 137 1,3 319 3,1 (1,37-3,1 15 [1, 042 1,042,2 10422 104 1,0 2,2 (1,04-2,29 1, 012 1,012,4 10124 101 240 2,4 [(1,01-2,40 023 1,023,9 10239 102 396 3,9 (1,02-3,96 22 2. IC-9 5, 0, [0 0,730, 0730 08 (0,73-0,8 (IC-95% 2, [2 1,422, 1422 14 (1,42-2,9 p=0, p0 3, [3 2,135, 2135 21 54 (2,13-5,4 p<0,0 1,373, 1373 31 (1,37-3, [1 1,042, 1042 10 (1,04-2,2 1,012, 1012 24 [(1,01-2,4 1,023, 1023 (1,02-3,9 IC- [ 0,730 (0,73-0, (IC-95 1,422 (1,42-2, p=0 2,135 (2,13-5, p<0, 1,373 (1,37-3 1,042 (1,04-2, 1,012 [(1,01-2, 1,023 (1,02-3, (0,73-0 (IC-9 (1,42-2 p= (2,13-5 p<0 (1,37- (1,04-2 [(1,01-2 (1,02-3 (0,73- (IC- (1,42- (2,13- p< (1,37 (1,04- [(1,01- (1,02- (0,73 (IC (1,42 (2,13 (1,3 (1,04 [(1,01 (1,02 (0,7 (1,4 (2,1 (1, (1,0 [(1,0 (0, (2, (1 [(1, (0 (2 ( [(1 [(

Abstract Background ST-segment elevation myocardial infarction (STEMI) is defined by symptoms accompanied by typical electrocardiogram changes. However, the characterization of ischemic symptoms is unclear, especially in subgroups such as women and the elderly. Objectives To analyze the typification of ischemic symptoms, temporal metrics and observe the occurrence of in-hospital outcomes, in the analysis of predictive scores, in patients with STEMI, in a drug-invasive strategy. Methods Study involving 2,290 patients. Types of predefined clinical presentations: typical pain, atypical pain, dyspnea, syncope. We measured the time between the onset of symptoms and demand for care and the interval between arrival at the medical unit and thrombolysis. Odds-ratios (OR; CI-95%) were estimated in a regression model. ROC curves were constructed for mortality predictors. The adopted significance level (alpha) was 5%. Results Women had a high prevalence of atypical symptoms; longer time between the onset of symptoms and seeking care; delay between arrival at the emergency room and fibrinolysis. Hospital mortality was 5.6%. Risk prediction by Killip-Kimball classification: AUC: [0.77 (0.73-0.81)] in class ≥II. Subgroups studied [OR (CI-95%)]: women [2.06 (1.42-2.99); p=0.01]; chronic renal failure [3.39 (2.13-5.42); p<0.001]; elderly [2.09 (1.37-3.19) p<0.001]; diabetics [1.55 (1.04-2.29); p=0.02]; obese 1.56 [(1.01-2.40); p=0.04]: previous stroke [2.01 (1.02-3.96); p=0.04] correlated with higher mortality rates. Conclusion Despite higher mortality rates in some subgroups, significant disparity persists in women, with delays in symptom recognition and prompt thrombolysis. We highlight the applicability of the Killip-Kimball score in prediction, regardless of the clinical presentation. STsegment ST segment STEMI (STEMI changes However unclear inhospital hospital outcomes scores druginvasive drug invasive strategy 2290 2 290 2,29 presentations pain dyspnea syncope thrombolysis Oddsratios Odds ratios OR (OR CI95% CI95 CI 95% 95 CI-95% model predictors alpha (alpha 5 5% fibrinolysis 56 6 5.6% KillipKimball Killip Kimball classification AUC 0.77 077 0 77 [0.7 0.730.81 073081 0.73 0.81 73 81 (0.73-0.81) II ≥II (CI-95%)] 2.06 206 06 [2.0 1.422.99 142299 1.42 2.99 1 42 99 (1.42-2.99) p=0.01 p001 p 01 p=0.01] 3.39 339 3 39 [3.3 2.135.42 213542 2.13 5.42 13 (2.13-5.42) p<0.001 p0001 001 p<0.001] 2.09 209 09 1.373.19 137319 1.37 3.19 37 19 (1.37-3.19 1.55 155 55 [1.5 1.042.29 104229 1.04 2.29 04 29 (1.04-2.29) p=0.02 p002 02 p=0.02] 156 1.5 1.012.40 101240 1.01 2.40 40 [(1.01-2.40) p=0.04 p004 2.01 201 1.023.96 102396 1.02 3.96 96 (1.02-3.96) presentation 229 2,2 CI9 9 CI-95 5.6 0.7 07 7 [0. 730 0.730.8 07308 073 081 0.8 8 (0.73-0.81 (CI-95%) 2.0 20 [2. 422 1.422.9 14229 142 1.4 299 2.9 4 (1.42-2.99 p=0.0 p00 3.3 33 [3. 135 2.135.4 21354 213 2.1 542 5.4 (2.13-5.42 p<0.00 p000 00 373 1.373.1 13731 137 1.3 319 3.1 (1.37-3.1 15 [1. 042 1.042.2 10422 104 1.0 2.2 (1.04-2.29 1. 012 1.012.4 10124 101 240 2.4 [(1.01-2.40 023 1.023.9 10239 102 396 3.9 (1.02-3.96 22 2, CI-9 5. 0. [0 0.730. 0730 08 (0.73-0.8 (CI-95% 2. [2 1.422. 1422 14 (1.42-2.9 p=0. p0 3. [3 2.135. 2135 21 54 (2.13-5.4 p<0.0 1.373. 1373 31 (1.37-3. [1 1.042. 1042 10 (1.04-2.2 1.012. 1012 24 [(1.01-2.4 1.023. 1023 (1.02-3.9 CI- [ 0.730 (0.73-0. (CI-95 1.422 (1.42-2. p=0 2.135 (2.13-5. p<0. 1.373 (1.37-3 1.042 (1.04-2. 1.012 [(1.01-2. 1.023 (1.02-3. (0.73-0 (CI-9 (1.42-2 p= (2.13-5 p<0 (1.37- (1.04-2 [(1.01-2 (1.02-3 (0.73- (CI- (1.42- (2.13- p< (1.37 (1.04- [(1.01- (1.02- (0.73 (CI (1.42 (2.13 (1.3 (1.04 [(1.01 (1.02 (0.7 (1.4 (2.1 (1. (1.0 [(1.0 (0. (2. (1 [(1. (0 (2 ( [(1 [(

https://doi.org/10.36660/abc.20211055

Integration of Statistical Models and Computer Simulation in Environmental Accidents: A Study on Leakage of Red Mud in the Pará River, Amazon, Brazil
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Sousa Jr., Pedro M. de

; Pereira, Simone F. P.

; Rocha, Ronaldo M.

; Alves, Mateus H. D.

; Pinheiro, Luciana S.

; Nogueira, Daniel P.

; Teixeira, Orivan M. M.

; Gonçalves, Auriane C. S.

Journal of the Brazilian Chemical Society

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oct 2021, Volume 32 N. 10 Pages 1997 - 2008

Abstract: En | Text: En | PDF: En

The introduction of potentially toxic elements (PTEs) from industrial activities in water bodies, highlights the vulnerability of the environment and the need for actions focused on the implementation of mechanisms that help in the control and remediation of these impacts. The objective of the study was based on the integration of instrumental analytical methods, multivariate statistics, and computer simulation models, with the proposal of implementing realistic scenarios of the red mud plume behavior in the Pará River. The selected location was the municipality of Barcarena-PA, where is located an important alumina/aluminum industrial center. With the aid of the inductively coupled plasma optical emission spectrometer (ICP OES), the chemical elements Al, B, Cr, Fe, Mn, P, Ti, and Zn were quantified and the principal component analysis (PCA) allowed to select Al, B, Fe, P, and Zn as the most relevant with 98.68% of the accumulated variance. Some scenarios were proposed by the simulated hydrodynamic model, which evidenced that the Trambioca community would be the most affected in the first 13 h after the effluent overflowed, and the other locations in domino effect. The main scientific gain of the proposal is the possibility of the predictive scenarios to help the actions of containment and mitigation of environmental damages by public control agencies, institutions involved, and other competent bodies.

https://doi.org/10.21577/0103-5053.20210091 28 downloads

Corrosion Sensor Using Metallic Double Layer in Optical Fiber
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Oliveira, Hebio J. B. de

; Silva Jr, Elias A.

; Alves, Henrique P.

; Nascimento, Jehan F. do

; Vilela-Leão, Luis H.

; Gonçalves, Charlie S.

; Martins Filho, Joaquim F.

Journal of Microwaves, Optoelectronics and Electromagnetic Applications

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sep 2021, Volume 20 N. 3 Pages 513 - 525

Abstract: En | Text: En | PDF: En

Abstract In this paper, a new optical fiber corrosion sensor based on metallic bilayers is described. The detection region is located at a fiber end facet and we present simulations as well as experimental results in controlled lab conditions for Ti(10 nm)/Al(10 nm) and Ni(5 nm)/Al(5 nm) bilayers. We perform the characterization of the device by numerical simulations using the COMSOL Multiphysics software, and with an analytical model, which makes use of the Fresnel equations. According to the simulations, the change in the reflected optical signal over time is related to variations in the thickness of the metallic films by the corrosive process and, consequently, the corrosion rate in each metal of the bilayer can be obtained. Upon the simulation results, sensor devices were fabricated by depositing thin metallic films on the cleaved facet of the optical fiber using the sputtering method. We show that the use of a metallic bilayer as a transducer, instead of a monolayer, improves the sensor measuring interval (20 ± 1 nm) and provides information about the corrosion rate along the corrosion process.

https://doi.org/10.1590/2179-10742021v20i31252 54 downloads

Synthesis, Spectroscopic Characterization, DFT Calculations and Preliminary Antifungal Activity of New Piperine Derivatives
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Souza Jr., Joselito S.

; Martins, Evandro P. S.

; Souza, Helivaldo D. S.

; Oliveira, Rafael F. de

; Alves, Francinara S.

; Lima, Edeltrudes O.

; Cordeiro, Laísa V.

; Trindade, Emmely O.

; Lira, Bruno F.

; Rocha, Gerd B.

; Athayde-Filho, Petronio F. de

; Barbosa-Filho, José M.

Journal of the Brazilian Chemical Society

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mar 2021, Volume 32 N. 3 Pages 490 - 502

Abstract: En | Text: En | PDF: En

Four new piperine derivatives, PC1-PC4, were synthesized, and their structures were fully characterized by infrared (IR) and 1H and 13C nuclear magnetic resonance (NMR) spectroscopies. Quantum chemical calculations were performed using density functional theory (DFT) with the B3LYP-D3/6-31G(d,p) and 6-311+G(2d,p) basis sets. Electronic properties, such as the energy gap between the highest occupied molecular orbital (HOMO) and the lowest unoccupied molecular orbital (LUMO) and some global chemical reactivity descriptors, were evaluated to study the reactivity and stability of the compounds. 1H and 13C NMR chemical shifts were calculated by using the gauge-invariant atomic orbital (GIAO) method and compared with experimental values. In addition, the compounds were evaluated in an antifungal study against Candida, Trichophyton and Microsporum strains, and only PC4 showed 70% inhibition in ten tested strains, with a minimum inhibitory concentration (MIC) ranging from 1.23-2.46 μmol mL-1 and a minimum fungicide concentration (MFC) ranging from 9.84-19.68 μmol mL-1, and presented a fungistatic effect.

https://doi.org/10.21577/0103-5053.20200203 189 downloads

Mineral Nutrients and Plant-Fungal Interaction in Cocoa Trees (Theobroma cacao L.)
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Sousa Filho, Hélio R.

; Jesus, Raildo M. de

; Bezerra, Marcos A.

; Silva, Vinnícius H. C. da

; Silva Jr., André L. S. da

; Alves, Juscelia P. S.

; Santana, Gregório M.

; Souza Jr., José O. de

Journal of the Brazilian Chemical Society

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feb 2021, Volume 32 N. 2 Pages 337 - 346

Abstract: En | Text: En | PDF: En

An infection of the fungus Moniliophthora perniciosa in cocoa trees reduces productivity of the plant. In this study, the concentrations of mineral nutrients in healthy leaves and in leaves of vegetative broom of the cocoa plant were determined, and the relationship between the disease and the nutritional composition of the leaves was assessed. The samples were analyzed using the wet digestion method and the concentrations were determined by inductively coupled plasma optical emission spectrometry and the Kjeldahl method. Results indicate that leaves of vegetative broom have lower concentrations of Ca, Mg, S, Fe, Mn, and Ni than healthy leaves. Concentrations of P and Cu were lower in healthy leaves and higher in leaves of vegetative broom. In contrast, concentrations of K, N, and Zn were the same for both types of leaves. In short, plant-fungal interaction was reflected in the nutritional composition of the leaves, demonstrated by the differences in nutrient concentrations between healthy and infected leaf tissue.

https://doi.org/10.21577/0103-5053.20200184 351 downloads

COVID-19: The question of genetic diversity and therapeutic intervention approaches
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Figueiredo, David Livingstone Alves

; Ximenez, João Paulo Bianchi

; Seiva, Fábio Rodrigues Ferreira

; Panis, Carolina

; Bezerra, Rafael dos Santos

; Ferrasa, Adriano

; Cecchini, Alessandra Lourenço

; Medeiros, Alexandra Ivo de

; Almeida, Ana Marisa Fusco

; Ramão, Anelisa

; Boldt, Angelica Beate Winter

; Moya, Carla Fredrichsen

; Chin, Chung Man

; Paula, Daniel de

; Rech, Daniel

; Gradia, Daniela Fiori

; Malheiros, Danielle

; Venturini, Danielle

; Tavares, Eliandro Reis

; Carraro, Emerson

; Ribeiro, Enilze Maria de Souza Fonseca

; Pereira, Evani Marques

; Tuon, Felipe Francisco

; Follador, Franciele Aní Caovilla

; Fernandes, Glaura Scantamburlo Alves

; Volpato, Hélito

; Cólus, Ilce Mara de Syllos

; Oliveira, Jaqueline Carvalho de

; Rodrigues, Jean Henrique da Silva

; Santos, Jean Leandro dos

; Visentainer, Jeane Eliete Laguila

; Brandi, Juliana Cristina

; Serpeloni, Juliana Mara

; Bonini, Juliana Sartori

; Oliveira, Karen Brajão de

; Fiorentin, Karine

; Lucio, Léia Carolina

; Faccin-Galhardi, Ligia Carla

; Ferreto, Lirane Elize Defante

; Lioni, Lucy Megumi Yamauchi

; Consolaro, Marcia Edilaine Lopes

; Vicari, Marcelo Ricardo

; Arbex, Marcos Abdo

; Pileggi, Marcos

; Watanabe, Maria Angelica Ehara

; Costa, Maria Antônia Ramos

; Giannini, Maria José S. Mendes

; Amarante, Marla Karine

; Khalil, Najeh Maissar

; Lima Neto, Quirino Alves de

; Herai, Roberto H.

; Guembarovski, Roberta Losi

; Shinsato, Rogério N.

; Mainardes, Rubiana Mara

; Giuliatti, Silvana

; Yamada-Ogatta, Sueli Fumie

; Gerber, Viviane Knuppel de Quadros

; Pavanelli, Wander Rogério

; Silva, Weber Claudio da

; Petzl-Erler, Maria Luiza

; Valente, Valeria

; Soares, Christiane Pienna

; Cavalli, Luciane Regina

; Silva Jr, Wilson Araujo

Genetics and Molecular Biology

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2021, Volume 44 N. 1 elocation e20200452

Abstract: En | Text: En | PDF: En

Abstract Coronavirus disease 2019 (COVID-19), caused by the Severe Acute Respiratory Syndrome Coronavirus type 2 (SARS-CoV-2), is the largest pandemic in modern history with very high infection rates and considerable mortality. The disease, which emerged in China’s Wuhan province, had its first reported case on December 29, 2019, and spread rapidly worldwide. On March 11, 2020, the World Health Organization (WHO) declared the COVID-19 outbreak a pandemic and global health emergency. Since the outbreak, efforts to develop COVID-19 vaccines, engineer new drugs, and evaluate existing ones for drug repurposing have been intensively undertaken to find ways to control this pandemic. COVID-19 therapeutic strategies aim to impair molecular pathways involved in the virus entrance and replication or interfere in the patients’ overreaction and immunopathology. Moreover, nanotechnology could be an approach to boost the activity of new drugs. Several COVID-19 vaccine candidates have received emergency-use or full authorization in one or more countries, and others are being developed and tested. This review assesses the different strategies currently proposed to control COVID-19 and the issues or limitations imposed on some approaches by the human and viral genetic variability.

https://doi.org/10.1590/1678-4685-gmb-2020-0452

10.

Multifunctionality of βCD/Ofloxacin and HPβCD/Ofloxacin Complexes: Improvement of the Antimicrobial Activity and Apoptosis Induction on Lung Adenocarcinoma A549 Cells
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Amaro, Bolivar R.

; Alves, Caio C. S.

; Ferreira, Gabriella F.

; Carvalho, Paloma E.

; Silva, Jeferson G. da

; Souza, Cleonice A.

; Cardoso Jr., Oswaldo

; Carli, Alessandra P.

; Machado, Fabiana S.

; Denadai, Ângelo M. L.

; Castro, Sandra B. R.

Journal of the Brazilian Chemical Society

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dec 2020, Volume 31 N. 12 Pages 2628 - 2637

Abstract: En | Text: En | PDF: En

The ofloxacin (OFLOX) is a second-generation synthetic antibiotic that can be classified as a multifunctional drug, but is a poorly soluble drug, which influences its efficiency. The inclusion complexes of OFLOX with β-cyclodextrin (βCD) or hydroxypropyl-β-cyclodextrin (HPβCD) can improve the chemical characteristics of the drug; however, studies showing the biological activity of these inclusion complexes are still scarce. The present work aimed to investigate the multifunctionality of the OFLOX and their inclusion complexes. Thus, the 1:1 βCD/OFLOX or HPβCD/OFLOX were prepared and analyzed by Fourier transform infrared spectroscopy (FTIR), thermogravimetric and differential thermal analysis (TGA and DTA), 1H nuclear magnetic resonance (NMR) and isothermal titration calorimetry (ITC). The antitumor and antibacterial effects were assessed. The results confirm the formation of the inclusion complexes, which had lower minimum inhibitory concentration (MIC) values, higher cytotoxicity and promoted the apoptosis. The present study showed, for the first time, the promising effects of the inclusion complexes as antitumor, improving the biological activities of the uncomplexed ofloxacin.

https://doi.org/10.21577/0103-5053.20200145 259 downloads

11.

A Novel Dielectric Slab Antenna Based on Microstrip-Franklin Excitation for mm-Waves
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Boas, E. C. Vilas

; Alves, A. A. C.

; Ribeiro, J. A. J.

; Cerqueira S. Jr., Arismar

Journal of Microwaves, Optoelectronics and Electromagnetic Applications

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jun 2020, Volume 19 N. 2 Pages 203 - 213

Abstract: En | Text: En | PDF: En

Abstract This work reports the development of a novel dielectric slab antenna based on microstrip-Franklin radiators, which enables efficient impedance matching among microstrip lines, substrate and air. The proposed antenna has been designed and numerically evaluated using ANSYS HFSS®. Its directivity ranges from 6.67 to 16.24 dB, as its length is increased from 19.9 to 170 mm. The 80 mm-length antenna prototype provides 11.14% fractional bandwidth (27.96 - 31.26 GHz) and 10.5 dBi gain at 30 GHz. The proposed antenna has been manufactured and applied to an indoor digital wireless communication link to provide 6 Gb/s throughput using 64-QAM modulation format, aiming 5G applications.

https://doi.org/10.1590/2179-10742020v19i2822 863 downloads

12.

Publishing in English is associated with an increase of the impact factor of Brazilian biodiversity journals
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ABAD, JUAN C.S.

; ALENCAR, RAONY M.

; MARIMON JR, BEN H.

; MARIMON, BEATRIZ

; SILVA, ADELMO C.C.

; JANCOSKI, HALINA

; REZENDE, RENAN S.

; ALVES-SILVA, ESTEVÃO

Anais da Academia Brasileira de Ciências

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2020, Volume 92 elocation e20181263

Abstract: En | Text: En | PDF: En

Abstract English is the lingua franca for scientific communication, but some journals, especially in developing countries, still publish non-English studies. A shift towards publishing in English may promote internationalization and more visibility of scientific journals. Here we compared quality indexes between Brazilian journals that have always published in English and journals that have published in languages other than English. We also investigated whether a temporal shift towards publishing in English led to elevated quality measures. Our analyses covered 16 Brazilian biodiversity journals and accounted for 12640 papers published since 2007. The mean impact factor was on average 55% higher in journals that have published consistently in English, compared to the so-called multilanguage journals. The proportion of publications in English increased to nearly three times the original value in multilanguage journals between 2007 and 2016, and the impact factor tripled during this period. At the same time, the Qualis-Capes classifications (B1-B2-B3) tended to fall. Publishing in English can be a first step to increased visibility, and this is particularly important for biodiversity journals, since Brazilian ecosystems are considered of interest to the international scientific community and nature conservation.

https://doi.org/10.1590/0001-3765202020181263 669 downloads

13.

Antimicrobial Resistance in Salmonella Serovars Isolated From an Egg-Producing Region in Brazil
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Benevides, VP

; Rubio, MS

; Alves, LBR

; Barbosa, FO

; Souza, AIS

; Almeida, AM

; Casas, MRT

; Guastalli, EAL

; Soares, NM

; Berchieri Jr, A

Brazilian Journal of Poultry Science

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2020, Volume 22 N. 2 elocation eRBCA-2020-1259

Abstract: En | Text: En | PDF: En

ABSTRACT Fowl paratyphoid infections are caused by different Salmonella serovars that can affect a wide range of hosts. Due to its complex epidemiology, Salmonella serovar identification is crucial for the development and implementation of monitoring and control programs in poultry farms. Moreover, the characterization of the antimicrobial resistance profiles of Salmonella strains isolated from livestock is relevant to public health because they are a common causative agent of foodborne diseases. The objective of this study was to investigate the presence of Salmonella spp. and to identify the antimicrobial resistance profiles of strains isolated in the midwestern region of São Paulo state, which accounts for the highest production of table eggs in Brazil. For this purpose, 2008 fecal samples were collected on 151 commercial layer farms and submitted to microbiological analyses. Twenty-two serovars were isolated from 80 (52.9%) farms, among which S. Mbandaka and S. Braenderup were the most prevalent. All isolates expressed resistance to at least one of the 23 antimicrobials tested, and the highest resistance rates were determined against streptomycin (93.5%) and sulfonamide (84.6%). Moreover, multidrug resistance was observed in 41% of the isolates and the maximum drug resistance profile was against ten different antimicrobials. Therefore, the identification of Salmonella serovars in poultry production provides epidemiological knowledge to develop prevention and control measures in order to ensure poultry health and to prevent human infection by multiresistant strains.

https://doi.org/10.1590/1806-9061-2020-1259 661 downloads

14.

Dual-band System composed by a Photonics-based Radar and a Focal-Point/Cassegrain Parabolic Antenna
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Brandão, T. H.

; Filgueiras, H.R.D.

; Alves, A. A. C.

; Scotti, F.

; Melo, S.

; Bogoni, A.

; Arismar Cerqueira Jr., S.

Journal of Microwaves, Optoelectronics and Electromagnetic Applications

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oct 2018, Volume 17 N. 4 Pages 567 - 578

Abstract: En | Text: En | PDF: En

Abstract This work reports a dual-band radar system composed of aphotonics-based transceiver and a unique dual-band antenna. The proposed antenna consists of an integration of conventional focal-point and Cassegrain parabolic antennas in the same structure, ensured by using a subreflector based on a frequency selective surface. Numerical and experimental results in terms of the antenna reflection coefficient, radiation pattern and gain are reported with excellent agreement over both frequency ranges. The innovative dual-band photonics-based radar transceiver operates simultaneously in the S- and X-bands. The radar system has been properlyvalidated by multiple detections of helicopters and airplanes in real conditions.

https://doi.org/10.1590/2179-10742018v17i41545 1693 downloads

15.

Brazilian legislation on genetic heritage harms Biodiversity Convention goals and threatens basic biology research and education
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ALVES, RUY JOSÉ V.

; WEKSLER, MARCELO

; OLIVEIRA, JOÃO A.

; BUCKUP, PAULO A.

; POMBAL JR., JOSÉ P.

; SANTANA, HÉLCIO R.G.

; PERACCHI, ADRIANO LÚCIO

; KELLNER, ALEXANDER W.A.

; ALEIXO, ALEXANDRE

; LANGGUTH, ALFREDO

; ALMEIDA, ALZIRA MARIA P. DE

; ALBERNAZ, ANA LUISA

; RIBAS, CAMILA C.

; ZILBERBERG, CARLA

; GRELLE, CARLOS EDUARDO V.

; ROCHA, CARLOS F.D.

; LAMAS, CARLOS JOSÉ E.

; HADDAD, CÉLIO F.B.

; BONVICINO, CIBELE R.

; PRADO, CYNTHIA P.A.

; LIMA, DANIELA O. DE

; ROSSA-FERES, DENISE C.

; SANTOS, FABRÍCIO R. DOS

; SALIMENA, FÁTIMA REGINA G.

; PERINI, FERNANDO A.

; BOCKMANN, FLÁVIO A.

; FRANCO, FRANCISCO LUÍS

; GIUDICE, GISELE M.L. DEL

; COLLI, GUARINO R.

; VIEIRA, IMA CÉLIA G.

; MARINHO-FILHO, JADER

; WERNECK, JANE M.C.F.

; SANTOS, JORGE A.D. DOS

; NASCIMENTO, JORGE LUIZ DO

; NESSIMIAN, JORGE LUIZ

; CORDEIRO, JOSÉ LUIS P.

; CLARO, KLEBER DEL

; SALLES, LEANDRO O.

; CASATTI, LILIAN

; PY-DANIEL, LUCIA HELENA R.

; SILVEIRA, LUÍS FÁBIO

; TOLEDO, LUÍS FELIPE

; OLIVEIRA, LUIZ F. DE

; MALABARBA, LUIZ ROBERTO

; SILVA, MARCELO D. DA

; COURI, MÁRCIA S.

; MARTINS, MÁRCIO

; TAVARES, MARCOS D.S.

; SOBRAL, MARCOS EDUARDO G.

; VIEIRA, MARCUS VINÍCIUS

; OLIVEIRA, MARIA DE LOURDES A.

; PINNA, MÁRIO DE

; HOPKINS, MICHAEL J.G.

; SOLÉ, MIRCO

; MENEZES, NAÉRCIO A.

; PASSOS, PAULO

; D’ANDREA, PAULO SERGIO

; PINTO, PEDRO C.E.A.

; VIANA, PEDRO L.

; TOLEDO, PETER M.

; REIS, ROBERTO E.

; VILELA, ROBERTO

; BASTOS, ROGÉRIO P.

; COLLEVATTI, ROSANE G.

; CERQUEIRA, RUI

; CASTROVIEJO-FISHER, SANTIAGO

; CARAMASCHI, ULISSES

Anais da Academia Brasileira de Ciências

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apr 2018, Volume 90 N. 2 Pages 1279 - 1284

Abstract: En | Text: En | PDF: En

https://doi.org/10.1590/0001-3765201820180460 7311 downloads

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