Pesquisa | SciELO

The worldwide emergence of viral diseases such as Zika, Dengue, Chikungunya, West Nile and Yellow Fever urge the search for solutions to eliminate their common vector, the Aedes aegypti mosquito. This paper describes the quantitative structure-activity relationship (QSAR) and docking studies of a series of nine 3-(3-aryl-1,2,4-oxadiazol-5-yl)propionic acids (AOPA), 1-9, previously published by our group. Additionally, three new 1,2,4-oxadiazoles, 10-12, have also been synthesized, characterized and studied. The QSAR and docking studies of all compounds, 1-12, clearly indicate that larger hydrophobic substituents such as biphenyl groups attached on position 3 in 1,2,4-oxadiazoles improve the larvicidal activity. It is worthwhile to mention that nanocapsulation of compounds 10-12 were necessary to help their dissolution in water and these three new 1,2,4-oxadiazoles also exhibited approximately equal or higher larvicidal activities compared to the former prototypes at stage L4.

https://doi.org/10.21577/0103-5053.20220112

Substrate Coating Produced via Additive Manufacturing with Conducting Polymers: Assessment in The Development of Electrodes
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Silveira, José Victor B. D.

; Aguiar, Maurício F. de

; Silva, Jardel J. O.

; Melo, Celso P. de

; Andrade, César A. S.

; Silva-Junior, Alberto G.

; Oliveira, Helinando P. de

; Alves, Kleber G. B.

Materials Research

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2023, Volume 26 Supl. 1 elocation e20220524

Resumo: En | Texto: En | PDF: En

The production of conductive and organic devices from a 3D printer represents a promising strategy for several areas. In particular, the synthesis of polypyrrole-coated acrylonitrile butadiene styrene (ABS) composites can be considered an important step to produce conductive supports for 3D printing. Herein, it is reported the production of ABS samples through the additive manufacturing process (3D printing) accordingly to the Fused Deposition Modeling (FDM) method. The hydrophilic behavior was controlled by the surface treatment using air plasma for the following step of coating with polypyrrole (PPy) via an in situ polymerization, using two different oxidants: ferric chloride (FeCl3.6H2O) and ammonium persulfate (APS). The chemical, optical, surface, and electrical properties of these materials were characterized through Fourier Transform infrared spectroscopy (FTIR), contact angle measurements, cyclic voltammetry, Scanning Electron Microscopy (SEM), 4-probe electrical measurement, and mechanical tensile testing. The ABS/PPy (FeCl3) composite exhibited a low electrical contact resistance and better performance for applications that require electrodes with a good conductance level.

https://doi.org/10.1590/1980-5373-mr-2022-0524

Art and science: impact of semioccluded vocal tract exercises and choral singing on quality of life in subjects with congenital GH deficiency
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Andrade, Bruna M. R. de

; Valença, Eugenia H. O.

; Salvatori, Roberto

; Oliveira Neto, Luiz A.

; Souza, Anita H. O.

; Oliveira, Alaíde H. A.

; Oliveira, Mario C.P.

; Melo, Enaldo V.

; Carvalho, Susana de

; Sales, Neuza J

; Monteiro, Gisane C.

; Lima, José Marcel de

; Annunziato, Marcos Felipe Harder

; Mannis, Guilherme Daniel Breternitz

; Souza, Lucas E. de A.

; Goes, Yasmin D.

; Carvalho, Thayza S.

; Farias, Celiane de

; Santos, Michela P. dos

; Cardoso, Gabriela P. F.

; Sousa, Carla S. Pereira

; Santana, Julia Rodrigues

; Sales, Ester Almeida

; d’Avila, Jeferson Sampaio

; Aguiar-Oliveira, Manuel H.

Archives of Endocrinology and Metabolism

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Abr 2022, Volume 66 Nº 2 Páginas 198 - 205

Resumo: En | Texto: En | PDF: En

ABSTRACT Objectives: Currently, not much is known about the interactions between voice and growth hormone (GH). We have described large kindred with isolated GH deficiency (IGHD) due to a GHRH receptor mutation, resulting in severe short stature and high-pitched voice. These IGHD individuals have little interest in GH treatment, as they consider themselves “short long-lived people”, rather than patients. Interestingly, they report normal general quality of life, but they rate their Voice-Related Quality of Life (V-RQOL) as low. Here, we assessed the social and auditory-perceptual impacts of artistic-intervention voice therapy with semioccluded vocal tract exercises (SOVTE) and choral singing, on their voices. Material and methods: Seventeen GH-naïve adult IGHD individuals were enrolled in a single-arm interventional pre-post study with 13 weekly sessions of choir singing over 90 days. Outcome measures were V-RQOL scores, self-assessment of voice, and auditory-perceptual analysis (GRBAS scale, G: grade of the severity of dysphonia; R: roughness; B: breathiness; A: asthenia; and S: strain). Results: Marked improvements in total (p = 0.0001), physical (p = 0.0002), and socioemotional (p = 0.0001) V-RQOL scores and in self-assessment of voice (p = 0.004) were found. The general grades of vocal deviation (p = 0.0001), roughness (p = 0.0001), breathiness (p = 0.0001) and strain (p = 0.0001) exhibited accentuated reductions. Conclusions: Voice therapy with semioccluded vocal tract exercises and choral training improved social impact and perceptual voice assessments in IGHD subjects and markedly improved their voice-related quality of life. This is particularly important in a setting where GH replacement therapy is not widely accepted.

https://doi.org/10.20945/2359-3997000000449

Caracterização Histológica das Lesões da Valva Mitral de Pacientes com Cardiopatia Reumática
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Gomes, Nayana F. A.

; Pascoal-Xavier, Marcelo A.

; Passos, Livia S. A.

; Paula, Thiago Mendonça Nunes

; Aguiar, João Marcelo de Souza

; Guarçoni, Felipe Vieira

; Nassif, Maria Cecília Landim

; Gelape, Claudio Leo

; Braulio, Renato

; Costa, Paulo Henrique N.

; Passaglia, Luiz Guilherme

; Martins, Raquel Braga

; Dutra, Walderez O.

; Nunes, Maria Carmo P.

Arquivos Brasileiros de Cardiologia

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Mar 2021, Volume 116 Nº 3 Páginas 404 - 412

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo Fundamentos: Os mecanismos subjacentes pelos quais a doença cardíaca reumática (DCR) levam à disfunção valvar grave não são totalmente compreendidos. Objetivo: O presente estudo avaliou as alterações histopatológicas nas valvas mitrais (VM) buscando uma associação entre o padrão de disfunção valvar predominante e os achados histopatológicos. Métodos: Em 40 pacientes submetidos à troca da VM devido a DCR e em 20 controles submetidos a transplante cardíaco, foram analisados os aspectos histológicos da VM excisada. Dados clínicos e ecocardiográficos também foram coletados. As análises histológicas foram realizadas usando coloração com hematoxilina-eosina. Determinou-se inflamação, fibrose, neoangiogênese, calcificação e metaplasia adiposa. Valores de p<0,05 foram considerados estatisticamente significativos. Resultados: A idade média dos pacientes com DCR foi de 53±13 anos, sendo 36 (90%) do sexo feminino, enquanto a idade média dos controles foi de 50±12 anos, semelhante aos casos, sendo a maioria do sexo masculino (70%). O endocárdio valvar reumático apresentou espessura maior que os controles (1,3±0,5 mm versus 0,90±0,4 mm, p=0,003, respectivamente), e infiltrado inflamatório mais intenso no endocárdio (78% versus 36%; p=0,004), com predominância de células mononucleares. Ocorreu fibrose moderada a acentuada mais frequentemente em válvulas reumáticas do que em válvulas controle (100% vs. 29%; p<0,001). Ocorreu calcificação em 35% das valvas reumáticas, principalmente entre as valvas estenóticas, associada à área valvar mitral (p=0,003). Conclusões: Apesar do intenso grau de fibrose, o processo inflamatório permanece ativo na valva mitral reumática, mesmo em doença tardia com disfunção valvar. A calcificação predominou em valvas estenóticas e em pacientes com disfunção ventricular direita.

Abstract Background: The underlying mechanisms by which rheumatic heart disease (RHD) lead to severe valve dysfunction are not completely understood. Objective: The present study evaluated the histopathological changes in mitral valves (MV) seeking an association between the pattern of predominant valvular dysfunction and histopathological findings. Methods: In 40 patients who underwent MV replacement due to RHD, and in 20 controls that underwent heart transplant, histological aspects of the excised MV were analyzed. Clinical and echocardiographic data were also collected. Histological analyses were performed using hematoxylin-eosin staining. Inflammation, fibrosis, neoangiogenesis, calcification and adipose metaplasia were determined. A p value<0.05 was considered to be statistically significant. Results: The mean age of RHD patients was 53±13 years, 36 (90%) were female, whereas the mean age of controls was 50±12 years, similar to the cases, with the majority of males (70%). The rheumatic valve endocardium presented greater thickness than the controls (1.3±0.5 mm versus 0.90±0.4 mm, p=0.003, respectively), and a more intense inflammatory infiltrate in the endocardium (78% versus 36%; p=0.004), with predominance of mononuclear cells. Moderate to marked fibrosis occurred more frequently in rheumatic valves than in control valves (100% vs. 29%; p<0.001). Calcification occurred in 35% of rheumatic valves, especially among stenotic valves, which was associated with the mitral valve area (p=0.003). Conclusions: Despite intense degree of fibrosis, the inflammatory process remains active in the rheumatic mitral valve, even at late disease with valve dysfunction. Calcification predominated in stenotic valves and in patients with right ventricular dysfunction.

https://doi.org/10.36660/abc.20200154 542 downloads

Parasitos em trutas-arco-íris (Oncorhynchus mykiss) criadas em sistema intensivo na região serrana de Santa Catarina, Brasil
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Henrique, S.M.

; Pilati, G.V.T.

; Snak, A.

; Costa, B.B.

; Aguiar, A.R.

; Skoronski, E.

; Moura, A.B.

Arquivo Brasileiro de Medicina Veterinária e Zootecnia

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Dez 2020, Volume 72 Nº 6 Páginas 2387 - 2390

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

ABSTRACT With the aim to determine the prevalence and mean parasite intensity in Oncorhynchus mykiss, 120 specimens were analyzed between April and September 2018. The cavity analysis was done by visual inspection, scraping of mucus, and extraction of the branchial arches. In the evisceration process, the intestine, the liver, and the kidney were separated, while the musculature was analyzed using the “candling table” method. All the collected material was preserved in 10% buffered formaldehyde and sent to the Laboratory of Parasitology and Parasitic Diseases, of the Center for Agroveterinary Sciences (CAV) of the University of the State of Santa Catarina (UDESC) for making the slides and identifying the parasites. Parasites were detected only in the analysis of the scraping of body mucus. Only specimens of the genus Trichodina were identified, in 34 of the 120 fish analyzed, in two collections, resulting in a prevalence of 28.33%. In total, 144 specimens of Trichodina were observed. The overall mean intensity was of 4.24 parasites in each fish analyzed. Characteristic lesions of infection by protozoa were not identified. This is the first report of the occurrence of Trichodina spp. in O. mykiss bred in an intensive system in Brazil, with low rates of parasitic infection in the mountain region of Santa Catarina.

https://doi.org/10.1590/1678-4162-11668 523 downloads

Pyrimidine Derivatives: QSAR Studies of Larvicidal Activity against Aedes aegypti
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Monte, Zenaide S.

; Navarro, Daniela M. A. F.

; Aguiar, Júlio C. R. O. F.

; Nascimento, Jessica S.

; Scotti, Marcus T.

; Scotti, Luciana

; Barros, Renata P. C.

; Santos, Aline C. S.

; Pereira, Valéria R. A.

; Falcão, Emerson P. S.

; Melo, Sebastião J.

Journal of the Brazilian Chemical Society

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Jul 2020, Volume 31 Nº 7 Páginas 1531 - 1540

Resumo: En | Texto: En | PDF: En

The present study investigated the activity of pyrimidine derivatives against Aedes aegypti. Two compounds, 3c and 3d showed excellent larvicide activity. Additionally, quantitative structure-activity relationship (QSAR) models were built using multiple-linear regression and partial least squares with descriptors generated from Dragon and VolSurf+ software, respectively. The best model is obtained with multiple linear regression (MLR), leading to a robust model. Moreover, the QSAR model is validated by means of some internal validation techniques in order to check its reliability, quality and robustness for predicting the larvicidal activity against A. aegypti. The models confirmed that the three-dimensional structure of molecules, steric properties, hydrophobic polar surface area, log partition (logP) and a simple pattern of substituent groups as methyl, methoxy, and succinimide in the pyrimidine derivatives are responsible for the larvicidal activity of the pyrimidine derivatives. Even more, the activity decreases by an electron-withdrawing group in R1 and increases when it is replaced by an aromatic ring activator group. These findings will aid in further studies of new pyrimidine derivatives active against Aedes aegypti.

https://doi.org/10.21577/0103-5053.20200039 283 downloads

Effects of childhood trauma on BDNF and TBARS during crack-cocaine withdrawal
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Sordi, Anne O.

; von Diemen, Lisia

; Kessler, Felix H.

; Schuch, Silvia

; Ornell, Felipe

; Kapczinski, Flávio

; Pfaffenseller, Bianca

; Gubert, Carolina

; Wollenhaupt-Aguiar, Bianca

; Salum, Giovanni A.

; Pechansky, Flavio

Brazilian Journal of Psychiatry

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Abr 2020, Volume 42 Nº 2 Páginas 214 - 217

Resumo: En | Texto: En | PDF: En

Objective: To evaluate the association between childhood trauma (CT) and serum levels of brain-derived neurotrophic factor (BDNF) and thiobarbituric acid-reactive substances (TBARS) during crack-cocaine withdrawal. Method: Thirty-three male crack-cocaine users were recruited at admission to a public addiction treatment unit. Serum BDNF and TBARS levels were evaluated at intake and discharge. Information about drug use was assessed by the Addiction Severity Index-6th Version (ASI-6); CT was reported throughout the Childhood Trauma Questionnaire (CTQ). CTQ scores were calculated based on a latent analysis model that divided the sample into low-, medium-, and high-level trauma groups. Results: There was a significant increase in BDNF levels from admission to discharge, which did not differ across CT subgroups. For TBARS levels, we found a significant time vs. trauma interaction (F2,28 = 6.357, p = 0.005,ηp 2 = 0.312). In participants with low trauma level, TBARS decreased, while in those with a high trauma level, TBARS increased during early withdrawal. Conclusion: TBARS levels showed opposite patterns of change in crack-cocaine withdrawal according to baseline CT. These results suggest that CT could be associated with more severe neurological impairment during withdrawal.

https://doi.org/10.1590/1516-4446-2019-0532 685 downloads

Type of shelter and first description of the echolocation call of disk-winged bat (Thyroptera devivoi)
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Rosa, Renato O. L.

; Silva, Claysson H. A.

; Oliveira, Thiago F.

; Silveira, Mauricio

; Aguiar, Ludmilla M. S.

Biota Neotropica

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

2020, Volume 20 Nº 2 elocation e20190821

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

Resumo: Thyropteridae é uma família de morcegos endêmica da região Neotropical e Thyroptera devivoi é a única espécie da família que ocorre exclusivamente em manchas florestais das savanas do norte de América do Sul e do Cerrado Brasileiro. Dados primários da espécie são ainda escassos e o objetivo deste estudo foi preencher lacunas de conhecimento sobre distribuição geográfica, uso de abrigos e padrões de ecolocalização da espécie. Nós observamos uma colônia de T. devivoi com 15 indivíduos vivendo sob uma folha morta de palmeira. Os morcegos usaram a folha como abrigo ao menos por quatro dias. Depois de capturar um indivíduo, nós confirmamos a identificação da espécie por meio da morfologia do crânio e do disco adesivo. O novo registro reforça a associação da espécie com formações não florestais e a ocorrência principalmente em savanas. Os chamados de ecolocalização de T. devivoi são consistentes com o conhecido para o gênero, com pulsos multi-harmônicos de baixa intensidade e alta frequência. A despeito destes novos dados, mais estudos são certamente necessários para aprimorar os dados de distribuição assim como os requerimentos biológicos da espécie.

Abstract: Thyropteridae is a family of bats endemic to the Neotropical region, and Thyroptera devivoi is the only species in the family that occurs exclusively in forest patches within savannas of northern South America and north of the Brazilian Cerrado. Primary data on the species are still scarce. Therefore, in this study our objective was to fill knowledge gaps on geographical distribution, roost-use, and echolocation for the species. We observed a T. devivoi colony of 15 individuals living under a dead palm leaf. The bats used the leaf as a roost for at least four days. After capturing one individual, we confirmed the species identification via skull size and the oblong shape of the adhesive disk. The new record reinforces the association of this species with non-forested formations, and its occurrence mainly in savannas. Echolocation calls of T. devivoi are consistent with those known for the genus, with multiharmonic, low intensity and high frequency pulses. Despite these new data, more studies are certainly needed to enhance distribution data for the species, as well as to clarify the biological and ecological requirements of the species.

https://doi.org/10.1590/1676-0611-bn-2019-0821 1161 downloads

First record of the invasive tapeworm, Schyzocotyle acheilognathi (Pseudophyllidea; Bothriocephalidae) in native freshwater fish, Brazil
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

SOUZA, GEOVANE A. DE

; MORESCA, VICTOR O.

; TEIXEIRA, GUSTAVO M.

; JEREP, FERNANDO C.

; AGUIAR, ALINE

Anais da Academia Brasileira de Ciências

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Set 2018, Volume 90 Nº 3 Páginas 2845 - 2849

Resumo: En | Texto: En | PDF: En

ABSTRACT Schyzocotyle acheilognathi is a tapeworm cestode commonly found in native freshwater fishes from Asia. This cestode has low host specificity and for that reason it has been registered parasitizing more than 200 cultured and wild fish species, besides amphibians, reptiles and birds from different regions of the world. With a high pathogenic potential, S. acheilognathi may cause mortalities in highly infected fish. In South America, Schyzocotyle was reported in Cyprinus carpio from a Brazilian fish farm at the municipality of Cornélio Procópio, northern Paraná State and from the natural environment in C. carpio from Neuquen River, Patagonia, Argentina. So far, there has been no report of this parasite in South American native fishes. Herein we report the first occurrence of the invasive tapeworm S. acheilognathi in Rineloricaria pentamaculata (Siluriformes, Loricariidae), a native armored freshwater catfish from southern Brazil.

https://doi.org/10.1590/0001-3765201820170749 820 downloads

10.

Antibodies against canine distemper virus, parvovirus and Ehrlichia spp. in wild captive carnivores in midwestern Brazil
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Taques, Isis I.G.G.

; Morgado, Thaís O.

; Braga, Ísis A.

; Paz, Regina C.R.

; Corrêa, Sandra H.R.

; Fritzen, Juliana T.T.

; Alfieri, Amauri A.

; Aguiar, Daniel M.

Pesquisa Veterinária Brasileira

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Ago 2018, Volume 38 Nº 8 Páginas 1681 - 1684

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO: A ocorrência de anticorpos contra o vírus da cinomose canina (CDV), parvovírus e Ehrlichia spp. em carnívoros selvagens em cativeiro foi avaliada em um parque zoológico do centro oeste do Brasil. As amostras de soro foram coletadas entre 2007 e 2014 de 45 carnívoros. Os anticorpos foram avaliados por ensaio de neutralização de vírus para CDV, teste de inibição de hemaglutinação para parvovírus, imunofluorescência indireta e ensaio imunoenzimático ligado à enzima para Ehrlichia spp. Anticorpos contra CDV e parvovírus foram detectados em 75% de canídeos e felídeos. Procionídeos foram negativos para CDV, embora um mustelídeo fora positivo. Dois canídeos apresentaram anticorpos reativos aos antígenos de E. canis. As altas taxas de anticorpos para CDV e parvovírus sugerem o contato com ambos os patógenos, entretanto desde que nenhuma história clínica de doença está registrada no Zoo-UFMT, podemos presumir que os carnívoros têm respondido satisfatoriamente contra os antígenos. As baixas taxas serológicas observadas contra Ehrlichia spp. pode ser resultado da baixa ocorrência de carrapatos entre os carnívoros.

ABSTRACT: The occurrence of antibodies against canine distemper virus (CDV), parvovirus and Ehrlichia spp. in wild captive carnivores was evaluated in a zoological park in midwestern Brazil. Serum samples were collected between 2007 and 2014 from 45 carnivores. Antibodies were evaluated by virus neutralization assay for CDV, hemagglutination inhibition test for parvovirus, indirect immunofluorescent and Enzyme-linked immunosorbent assay for Ehrlichia spp. Antibodies against CDV and parvovirus were detected in 75% of Canidae and Felidae. Procyonidae were negative for CDV, although one Mustelidae was positive. TwoCanidae presented antibodies reactive to E. canis antigens. The high antibodies rates to CDV and parvovirus suggest the contact with both pathogens, however since no clinical history of disease are registered in the Zoo-UFMT, we can presume that carnivores have responded satisfactorily against the antigens. The low serological rates observed against Ehrlichia spp. may be resulted to the low occurrence of ticks among carnivores.

https://doi.org/10.1590/1678-5150-pvb-5333 1487 downloads

11.

Serum and liver copper, iron, molybdenum and zinc concentration in goats and sheep in the state of Paraíba, Brazil
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Silva, Tatiane R.

; Soares, Pierre C.

; Dantas, Antonio F.M.

; Marques, Allan V.S.

; O. Filho, Emanuel Felipe

; Aguiar, Gildeni Maria N.

; Marques, Ana Luisa A.

; Riet-Correa, Franklin

Pesquisa Veterinária Brasileira

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Jul 2018, Volume 38 Nº 7 Páginas 1313 - 1316

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

RESUMO: Este estudo teve como objetivo determinar Cu, Fe, Mo e Zn no fígado e soro em ovinos e caprinos criados nas pastagens da região semiárida do Estado da Paraíba, Brasil, nas estações seca e chuvosa, e estabelecer se a deficiência de Cu e primaria ou secundaria a alta ingestão de Mo ou Fe. Cu, Zn, Mo, e Fe foram determinados por espectrometria de absorção atômica com plasma indutivamente acoplado (ICP-OES) em 253 amostras de fígado e soro selecionados aleatoriamente em um matadouro. As concentrações séricas de Cu nos caprinos e ovinos foram 11,82±3,28mmol/L e 10,97±3,61mmol/L, respectivamente. As concentrações de Cu no fígado foram de 160,37±11,77mg/kg em caprinos e 152,12±13,16mg/kg em ovinos. As concentrações séricas de Fe foram de 16,38±4,51mmol/L em caprinos e 25,41±9,76mmol/L em ovinos. As concentrações de Fe no fígado foram 189,37±6,51mg/kg em caprinos e 313.70±12,89mg/kg em ovinos. As concentrações séricas de Mo foram de 0,14±0,04mmol/L em caprinos e 0,29±0,06mmol/L em ovinos. As concentrações de Mo no fígado foram 6,09±0,23mg/kg em caprinos e 6,22±0,15mg/kg em ovinos. As concentrações séricas de Zn foram 8,30±1,91mmol/L em caprinos e 8,63±2,22mmol/L em ovinos. As concentrações de Zn no fígado foram 132,80±3,39mg/kg em cabras e 130,70±2,99mg/kg em ovelhas. Estes resultados mostram concentrações baixas ou marginais de Cu e Zn no soro e fígado indicando que estes minerais devem ser suplementados. As concentrações normais ou mesmo baixos de Mo e as altas concentrações de Fe sugerem que a deficiência de Cu pode ser primária, devido à baixa ingestão de Cu, ou secundária a alta ingestão de Fe.

ABSTRACT: This study aimed to determine Cu, Fe, Mo, and Zn liver and serum concentration in sheep and goats raised in the rangelands of the semiarid region of the state of Paraíba, Brazil, during the dry and rainy seasons, and to establish if Cu deficiency is primary or secondary to high ingestion of Mo or Fe. Cu, Zn, Mo and Fe concentrations were determined by atomic absorption spectrometry coupled to mass (ICP-Plasma) in 253 liver and serum samples randomly selected in a slaughterhouse. The mean serum concentrations of Cu in the goats and sheep were 11.82±3.28μmol/L and 10.97±3.61μmol/L respectively. The liver Cu concentrations were 160.37±11.77mg/kg in goats and 152.12±13.16mg/kg in sheep. The mean serum Fe concentrations were 16.38±4.51μmol/L in goats and 25.41±9.76μmol/L in sheep. The mean Fe concentrations in the liver were 189.37±6.51mg/kg in goats and 313.70±12.89mg/kg in sheep. The mean serum concentrations of Mo were 0.14±0.04μmol/L in goats and 0.29±0.06μmol/L in sheep. The mean Mo concentrations in the liver were 6.09±0.23mg/kg in goats and 6.22±0.15mg/kg in sheep. The mean serum Zn concentrations were 8.30±1.91μmol/L in goats and 8.63±2.22μmol/L in sheep. The mean Zn concentrations in the liver were 132.80±3.39mg/kg in goats and 130.70±2.99mg/kg in sheep. These results show low or marginal serum and liver concentrations of Cu and Zn, indicating that these minerals should be supplemented. The normal or even low concentrations of Mo and the high concentration of Fe suggest that Cu deficiency may be primary, due to low Cu ingestion, or secondary due to high Fe ingestion.

https://doi.org/10.1590/1678-5150-pvb-5542 688 downloads

12.

Biological activities and phytochemical profile of Passiflora mucronata from the Brazilian restinga
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Araujo, Marlon H. de

; Silva, Isabel C.V. da

; Oliveira, Pollyana F. de

; Barreto, Arielly R.R.

; Konno, Tatiana U.P.

; Esteves, Francisco de A.

; Barth, Thiago

; Aguiar, Fernando A.

; Lopes, Norberto P.

; Dermenjian, Renee K.

; Guimarães, Denise O.

; Leal, Ivana C.R.

; Lasunskaia, Elena B.

; Muzitano, Michelle Frazão

Revista Brasileira de Farmacognosia

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Dez 2017, Volume 27 Nº 6 Páginas 702 - 710

Resumo: En | Texto: En | PDF: En

ABSTRACT In general, Passiflora species have been reported for their folk medicinal use as sedative and anti-inflammatory. However, P. caerulea has already been reported to treat pulmonary diseases. Severe pulmonary tuberculosis, generally caused by Mycobacterium tuberculosis strains resistant to multiple drugs, can lead to deleterious inflammation and high mortality, encouraging new approaches in drug discovery. Thus, the aim of this work was to evaluate the Passiflora mucronata Lam., Passifloraceae, potential for tuberculosis treatment. Specifically, related to antimycobacterial activity and anti-inflammatory related effects (based on inhibition of nitric oxide, tumor necrosis factor-alpha production and antioxidant potential), as well as the chemical profile of P. mucronata. High performance liquid chromatography coupled with diode-array ultraviolet and mass spectrometer analyses of crude hydroalcoholic extract and ethyl acetate fraction showed the presence of flavonoids. Ethyl acetate fraction showed to be as antioxidant as Ginkgo biloba standard extract with EC50 of 14.61 ± 1.25 µg/ml. One major flavonoid isolated from ethyl acetate fraction was characterized as isoorientin. The hexane fraction and its main isolated compound, the triterpene β-amyrin, exhibited significant growth inhibitory activity against Mycobacterium bovis BCG (MIC50 1.61 ± 1.43 and 3.93 ± 1.05 µg/ml, respectively). In addition, Passiflora mucronata samples, specially hexane and dichloromethane fractions, as well as pure β-amyrin, showed a dose-related inhibition of lipopolysaccharide (LPS)-induced nitric oxide production. In conclusion, Passiflora mucronata presented relevant biological potential and should be considered for further studies using in vivo pulmonary tuberculosis model.

https://doi.org/10.1016/j.bjp.2017.07.005 945 downloads

13.

NANOFILTRATION AND REVERSE OSMOSIS APPLIED TO GOLD MINING EFFLUENT TREATMENT AND REUSE
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Andrade, L. H.

; Aguiar, A. O.

; Pires, W. L.

; Miranda, G. A.

; Teixeira, L. P. T.

; Almeida, G. C. C.

; Amaral, M. C. S.

Brazilian Journal of Chemical Engineering

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Jan 2017, Volume 34 Nº 1 Páginas 93 - 107

Resumo: En | Texto: En | PDF: En

Abstract Gold mining and ore processing are activities of great economic importance. However, they are related to generation of extremely polluted effluents containing high concentrations of heavy metals and low pH. This study aims to evaluate the optimal conditions for gold mining effluent treatment by crossflow membrane filtration regarding the following variables: nanofiltration (NF) and reverse osmosis (RO) membrane types, feed pH and permeate recovery rate. It was observed that retention efficiencies of NF90 were similar to those of RO membranes though permeate fluxes obtained were 7-fold higher. The optimum pH value was found to be 5.0, which resulted in higher permeate flux and lower fouling formation. At a recovery rate above 40% there was a significant decrease in permeate quality, so this was chosen as the maximum recovery rate for the proposed system. We conclude that NF is a suitable treatment for gold mining effluent at an estimated cost of US$ 0.83/m3.

https://doi.org/10.1590/0104-6632.20170341s20150082 5469 downloads

14.

Experimental use of a cellulosic biopolymer as a new material for suburethral sling in the treatment of stress urinary incontinence
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Lucena, Roberto G.

; Lima, Salvador V. C.

; Aguiar, José L. de A.

; Andrade, Rogerson T.

; Pinto, Flávia C. M.

; Vilar, Fabio O.

International braz j urol

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Dez 2015, Volume 41 Nº 6 Páginas 1148 - 1153

Resumo: En | Texto: En | PDF: En

Purpose: To analyze the interaction between the cellulose exopolysaccharide (CEC) and urethral tissue when used as a pubovaginal sling. Materials and Methods: Forty Wistar rats were divided into four groups. In groups A and B the cellulose exopolysaccharide (CEC) was implanted around the urethral tissue (bladder neck below the upper margin) and the rats were sacrificed at 30 and 90 days. Similar procedure was used in groups C and D using a polypropylene mesh. After sacrifice bladder and urethra were sent for histological analysis. The histological parameters (inflammatory reaction) by evaluated by quantitative analysis. For collagen deposition analysis it was used stereological method. Results: The cellulose exopolysaccharide (CEC) was inert and well preserved at the implanted region at the time of examination. Morphologic alterations were not found at the CEC implant but some reactions of foreign body type were observed at the adjacent structures. In some areas a process of neovascular formation was observed. Stereological analysis at the suburethral area showed a significant difference in collagen presence in favor of CEC. Conclusions: The CEC implant showed adequate results when used as a suburethral sling with good integration to the host tissue, preserving its architecture.

https://doi.org/10.1590/S1677-5538.IBJU.2014.0155 943 downloads

15.

Surgical complications and metachronous rectal cancer risk in patients with classic familial adenomatous polyposis
Facebook Twitter

Outras redes sociais
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Outras redes

Métricas
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Stevanato Filho, Paulo Roberto

; Aguiar Jr., Samuel

; Ferreira, Fábio O.

; Nakagawa, Wilson T.

; Spencer, Ranyell M.

; Takahashi, Renata M.

; Bezerra, Tiago S.

; Lopes, Ademar

Journal of Coloproctology (Rio de Janeiro)

Métricas do periódico
- Sobre o periódico
- SciELO Analytics

Mar 2015, Volume 35 Nº 1 Páginas 08 - 13

Resumo: Pt En | Texto: Pt En | PDF: Pt | PDF: En

INTRODUÇÃO: Polipose adenomatosa familiar (PAF), uma doença autossômica dominante caracterizada pela formação de numerosos pólipos adenomatosos no cólon e reto, é causada por mutações da linha germinativa no gene da polipose adenomatosa do cólon (PAC). MÉTODOS: Para determinar a morbidade cirúrgica em pacientes com PAF clássica e determinar a incidência de câncer colorretal (CCR) metacrônico naqueles pacientes submetidos à colectomia total (CT) com anastomose íleo-retal ou submetidos à proctocolectomia restaurativa (PCT) e anastomose bolsa ileal-anal, foram analisados pacientes com PAF que foram tratados e tiveram acompanhamento periódico no A. C. Camargo Cancer Center de 1994 até 2013. RESULTADOS: Ocorreram complicações cirúrgicas em 22 pacientes (34,3%); 16 (25%) tiveram complicações precoces e 8 (12,5%) complicações tardias. Não houve mortes como resultado de complicações pós-operatórias. A incidência de câncer de reto metacrônico após PCT foi de 2,3% e após CT foi de 18,18% (p = 0,044). CONCLUSÕES: A fim de proporcionar melhor qualidade de vida para os pacientes com PAF, CT é comumente oferecida, pois esta técnica simples está tradicionalmente associada com menores percentuais de complicações pós-operatórias e melhores resultados funcionais. No entanto, CT se tornou uma técnica menos atraente em pacientes com PAF em sua forma clássica ou difusa, uma vez que traz consigo uma probabilidade significativamente maior de câncer retal metacrônico.

INTRODUCTION: Familial adenomatous polyposis (FAP), an autosomal dominant disease characterized by development of numerous adenomatous polyps in the colon and rectum, is caused by germline mutations in the Adenomatous Polyposis Coli (APC) gene. METHODS: To determine the surgical morbidity in patients with classical familial adenomatous polyposis and determine the incidence of metachronous colorectal cancer (CRC) in those undergoing total colectomy (TC) with ileorectal anastomosis or restorative total proctocolectomy (TPC) and ileal pouch anal anastomosis. We analyzed patients with familial adenomatous polyposis who received treatment and regular follow-up at the A.C. Camargo Cancer Center from 1994 to 2013. RESULTS: Operative complications occurred in 22 patients (34.3%), 16 (25%) being early complications and 8 (12.5%) late complications. No mortality occurred as a result of postoperative complications. The incidence of metachronous rectal cancer after total proctocolectomy was 2.3% and after total colectomy 18.18% (p = 0.044). CONCLUSIONS: In order to provide better quality of life for individuals with familial adenomatous polyposis, total colectomy is commonly offered, as this simple technique is traditionally associated with lower rates of postoperative complications and better functional outcomes. However, it has become a less attractive technique in patients with familial adenomatous polyposis in its classical or diffuse form, since it has a significantly higher probability of metachronous rectal cancer.

https://doi.org/10.1016/j.jcol.2015.01.006 1334 downloads

Exibindo

itens por página

Página de 2 Próxima

Selecione um ou mais resultados

Todos Ordem alfabética

Resultados

Gráfico comparativo Download CSV

Visualizar estatísticas de

Enviar resultado

E-mail do(s) destinatários*

Utilize ; (ponto e vírgula) para mais de um e-mail.

Enviar por e-mail

Esta página

Registros selecionados

Todos os registros (max. 300)

Alterar remetente, assunto e comentários

Seu email

Assunto

Comentários

Alterar remetente, assunto e comentários

Exportar resultados

Formato de exportação:

RIS (para EndNote, ProCite, Reference Manager, RefWorks, Citavi, etc.)

BibTeX

Citação

CSV (para Excel, etc)

Exportar:

Esta página

Itens selecionados

Todos os registros (max. 2000)

Mostrar mais

Sem resultados

Não foram encontrados documentos para sua pesquisa

Glossário e ajuda para busca

Você pode enriquecer sua busca de uma forma muito simples. Use os índices de pesquisa combinados com os conectores (AND ou OR) e especifique cada vez mais sua busca.

Por exemplo, se você deseja buscar artigos sobre
casos de dengue no Brasil em 2015, use:
ti:dengue and publication_year:2015 and aff_country:Brasil

Veja abaixo a lista completa de índices de pesquisa que podem ser usados:

Cód. do Índice	Elemento
ti	título do artigo
au	autor
kw	palavras-chave do artigo
subject	assunto (palavras do título, resumo e palavras-chave)
ab	resumo
ta	título abreviado da revista (ex. Cad. Saúde Pública)
journal_title	título completo da revista (ex. Cadernos de Saúde Pública)
la	código do idioma da publicação (ex. pt - Português, es - Espanhol)
type	tipo do documento
pid	identificador da publicação
publication_year	ano de publicação do artigo
sponsor	financiador
aff_country	código do país de afiliação do autor
aff_institution	instituição de afiliação do autor
volume	volume do artigo
issue	número do artigo
elocation	elocation
doi	número DOI
issn	ISSN da revista
in	código da coleção SciELO (ex. scl - Brasil, col - Colômbia)
use_license	código da licença de uso do artigo

SciELO - Scientific Electronic Library Online
Rua Dr. Diogo de Faria, 1087 – 9º andar – Vila Clementino 04037-003 São Paulo/SP - Brasil
Email: scielo@scielo.org

Todo o conteúdo de www.scielo.org, exceto onde está identificado, está licenciado sob uma Licença Creative Commons.
saiba mais »