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Occurrence of Lipoptena mazama and Lipoptena guimaraesi (Diptera: Hippoboscidae) on gray brocket deer (Mazama gouazoubira) in southern Brazil
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Pinheiro, Mariana Faccini

; Bonato, Raquel Muhlbeier

; Ikeda, Priscila

; Souza, Rodrigo Antonio Martins de

; Carrasco, Adriano de Oliveira Torres

; Seki, Meire Christina

Revista Brasileira de Parasitologia Veterinária

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2021, Volume 30 N. 4 elocation e008621

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

Resumo O gênero Lipoptena engloba insetos hematófagos da família Hippoboscidae que parasitam diferentes espécies de cervídeos. O presente estudo tem por objetivo relatar a identificação de 19 moscas encontradas parasitando cervídeos do gênero Mazama, no Estado do Paraná, Brasil. Dentre os espécimes analisados, 18 pertenciam à espécie Lipoptena mazamae e um à espécie Lipoptena guimaraesi. O presente artigo expande a lista de hospedeiros de L. guimaraesi, antes restrita a uma única espécie de cervídeo (Ozotoceros bezoarticus).

Abstract The genus Lipoptena includes hematophagous insects of the family Hippoboscidae that parasitize different deer species. The present study aims to identify 19 flies that parasitize deer of the genus Mazama in the State of Paraná, Brazil. We analyzed 18 flies (Lipoptena mazamae) and 1 Lipoptena guimaraesi. This study expands the host list for L. guimaraesi, previously restricted to a single deer species (Ozotoceros bezoarticus).

https://doi.org/10.1590/s1984-29612021081

Population-level seropositivity trend for SARS-Cov-2 in Rio Grande do Sul, Brazil
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Barros, Aluísio J D

; Victora, Cesar G

; Menezes, Ana M B

; Horta, Bernardo L

; Barros, Fernando C

; Hartwig, Fernando P

; Victora, Gabriel D

; Vidaletti, Luis Paulo

; Silveira, Mariângela F

; Mesenburg, Marilia A

; Jacques, Nadège

; Struchiner, Cláudio J

; Brust, Flávia Roberta

; Dall’Agnol, Marinel M

; Delamare, Ana Paula Longaray

; François, Carlos Henrique R

; Ikeda, Maria Letícia R

; Pellegrini, Débora C P

; Reuter, Cézane Priscila

; Silva, Shana G da

; Dellagostin, Odir A

; Hallal, Pedro C

Revista de Saúde Pública

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2021, Volume 55 elocation 78

Abstract: En | Text: En | PDF: En

ABSTRACT OBJECTIVE To describe the evolution of seropositivity in the State of Rio Grande do Sul, Brazil, through 10 consecutive surveys conducted between April 2020 and April 2021. METHODS Nine cities covering all regions of the State were studied, 500 households in each city. One resident in each household was randomly selected for testing. In survey rounds 1–8 we used the rapid WONDFO SARS-CoV-2 Antibody Test (Wondfo Biotech Co., Guangzhou, China). In rounds 9–10, we used a direct ELISA test that identifies IgG to the viral S protein (S-UFRJ). In terms of social distancing, individuals were asked three questions, from which we generated an exposure score using principal components analysis. RESULTS Antibody prevalence in early April 2020 was 0.07%, increasing to 10.0% in February 2021, and to 18.2% in April 2021. In round 10, self-reported whites showed the lowest seroprevalence (17.3%), while indigenous individuals presented the highest (44.4%). Seropositivity increased by 40% when comparing the most with the least exposed. CONCLUSIONS The proportion of the population already infected by SARS-Cov-2 in the state is still far from any perspective of herd immunity and the infection affects population groups in very different levels.

https://doi.org/10.11606/s1518-8787.2021055004075

Population-level seropositivity trend for SARS-Cov-2 in Rio Grande do Sul, Brazil
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Barros, Aluísio J D

; Victora, Cesar G

; Menezes, Ana M B

; Horta, Bernardo L

; Barros, Fernando C

; Hartwig, Fernando P

; Victora, Gabriel D

; Vidaletti, Luis Paulo

; Silveira, Mariângela F

; Mesenburg, Marilia A

; Jacques, Nadège

; Struchiner, Cláudio J

; Brust, Flávia Roberta

; Dall’Agnol, Marinel M

; Delamare, Ana Paula Longaray

; François, Carlos Henrique R

; Ikeda, Maria Letícia R

; Pellegrini, Débora C P

; Reuter, Cézane Priscila

; Silva, Shana G da

; Dellagostin, Odir A

; Hallal, Pedro C

Revista de Saúde Pública

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2021, Volume 55 elocation 78

Abstract: En | Text: En | PDF: En

https://doi.org/10.11606/s1518-8787.2021055004075

Aortic valve endocarditis due to Bartonella clarridgeiae in a dog in Brazil
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André, Marcos Rogério

; Canola, Raphaela Arantes Marques

; Braz, Jaislane Bastos

; Perossi, Isabella Fernanda Spinelli

; Calchi, Ana Claudia

; Ikeda, Priscila

; Machado, Rosangela Zacarias

; Vasconcelos, Rosemeri de Oliveira

; Camacho, Aparecido Antonio

Revista Brasileira de Parasitologia Veterinária

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dec 2019, Volume 28 N. 4 Pages 661 - 670

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

Resumo Relatamos o primeiro caso documentado de endocardite associada à Bartonella clarridgeiae em um cão na América Latina. Endocardite aórtica valvar vegetativa infecciosa foi diagnosticada em um cão sem raça definida de 10 anos de idade. O cão apresentou sopro sistólico e diastólico de grau V / VI, hipertermia e perda progressiva de peso. Cardiomegalia e presença de padrão alveolar difuso nos campos pulmonares foram observados na avaliação radiográfica do tórax. Estruturas irregulares e hiperecogênicas aderidas aos folhetos aórticos, causando obstrução da via de saída do ventrículo esquerdo e insuficiência aórtica grave, foram observadas na avaliação ecocardiográfica. À necropsia, foi observada uma estrutura vegetativa, esbranquiçada e endurecida medindo 1,0 cm de diâmetro na válvula semilunar aórtica. Por meio de uma combinação de cultura líquida baseada em meio de pré-enriquecimento de inseto, ensaios de PCR quantitativa em tempo real e convencional baseados nos genes nuoG e gltA, respectivamente, seguidos de sequenciamento e inferências filogenéticas, DNA de B. clarridgeiae foi detectado no tecido valvular lesionado do paciente. O diagnóstico de endocardite vegetativa aórtica grave, possivelmente causado por B. clarridgeiae em um cão no Brasil, foi apoiado por características clínicas, ecocardiográficas, anatomopatológicas e moleculares.

Abstract We report the first documented case of endocarditis associated with Bartonella clarridgeiae in a dog in Latin America. Infective vegetative valvular aortic endocarditis was diagnosed in a 10-year-old male mixed breed dog. The dog presented grade V/VI systolic and diastolic murmur, hyperthermia, and progressive weight loss. Cardiomegaly and presence of diffuse alveolar pattern in the lung fields were observed in the thorax radiography evaluation. Irregular and hyperechogenic structures adhered to the aortic leaflets, causing obstruction of the left ventricular outflow tract and severe aortic insufficiency, were observed in the echocardiography evaluation. A vegetative, whitish, hardened structure measuring 1.0 cm in diameter was observed in aortic semilunar valve at necropsy. Based on a combination of pre-enrichment insect-based medium liquid culture, quantitative real-time and conventional PCR assays based on nuoG and gltA genes, respectively, followed by sequencing and phylogenetic inferences, B. clarridgeiae DNA was detected in the patient’s aortic valve lesions. Clinical, echocardiographic, anatomopathologic and molecular features supported the diagnosis of severe aortic vegetative endocarditis possibly caused by B. clarridgeiae in a dog in Brazil.

https://doi.org/10.1590/s1984-29612019078 950 downloads

Molecular detection of vector borne pathogens in anemic and thrombocytopenic dogs in southern Brazil
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Mongruel, Anna Cláudia Baumel

; Ikeda, Priscila

; Sousa, Keyla Carstens Marques de

; Benevenute, Jyan Lucas

; Falbo, Margarete Kimie

; Machado, Rosangela Zacarias

; Carrasco, Adriano de Oliveira Torres

; André, Marcos Rogério

; Seki, Meire Christina

Revista Brasileira de Parasitologia Veterinária

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dec 2018, Volume 27 N. 4 Pages 505 - 513

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

Resumo Agentes transmitidos por artrópodes têm grande importância na medicina veterinária devido à sua capacidade de causar doenças graves em seus hospedeiros. O presente estudo objetivou investigar a ocorrência de três patógenos transmitidos por vetores, Ehrlichia canis, Rangelia vitalii e Hepatozoon canis, em cães na região sul do Brasil. Foram coletadas amostras de sangue total de 75 cães domésticos que apresentavam anemia e/ou trombocitopenia, em Guarapuava, Paraná, Brasil. As amostras de DNA foram submetidas à técnica de PCR convencional para E. canis (dsb), piroplasmídeos (18S rRNA) e Hepatozoon spp. (18S rRNA), seguida de sequenciamento e análises filogenéticas. Das 75 amostras, uma (1,33%) foi positiva para Hepatozoon spp. e seis (8%) foram positivas para Babesia spp. Nenhuma amostra mostrou resultados positivos para Ehrlichia spp. utilizando a detecção pelo gene dsb. As análises filogenéticas revelaram que três sequências obtidas foram agrupadas no mesmo clado que R. vitalii , enquanto uma foi agrupada juntamente com B. vogeli. A única sequência obtida pelo protocolo de PCR para Hepatozoon spp. foi agrupada juntamente com H. canis. Assim, é justificada necessidade de diferenciação das espécies de piroplasmas, através do diagnóstico molecular, como agentes etiológicos nos casos clínicos de hemoparasitose canina, considerando o potencial patogênico de R. vitalii quando comparado à B. vogeli.

Abstract Arthropod-borne pathogens are medically important because of their ability to cause diseases in their hosts. The purpose of this study was to detect the occurrence of Ehrlichia spp., piroplasmids and Hepatozoon spp. in dogs with anemia and thrombocytopenia in southern Brazil. EDTA-whole blood was collected from 75 domestic dogs presenting anemia or/and thrombocytopenia from Guarapuava, state of Paraná, Brazil. DNA samples were subjected to conventional PCR assays for Ehrlichia spp. (dsb), piroplasmids (18S rRNA) and Hepatozoon spp. (18S rRNA), followed by sequencing and phylogenetic analyses. Among the 75 dogs, one (1.33%) was positive for Hepatozoon sp. and six (8%) were positive for piroplasmids in 18S rRNA cPCR assays. None of the dogs showed positive results in Ehrlichia spp.-cPCR targeting dsb gene. The phylogenetic analyses revealed that three piroplasm sequences were clustered with Rangellia vitalii, while one sequence was grouped with B. vogeli. The only sequence obtained from Hepatozoon spp.-PCR protocol was pooled with H. canis. Therefore, there is urgent need for differential molecular diagnosis of the two piroplasm species cited as etiological agents in clinical cases of canine hemoparasitic diseases, given the higher pathogenic potential of R. vitalii than of B. vogeli.

https://doi.org/10.1590/s1984-296120180069 1099 downloads

Detection of Anaplasma sp. phylogenetically related to A. phagocytophilum in a free-living bird in Brazil
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Mongruel, Anna Claudia Baumel

; Benevenute, Jyan Lucas

; Ikeda, Priscila

; André, Marcos Rogério

; Machado, Rosangela Zacarias

; Carrasco, Adriano de Oliveira Torres

; Seki, Meire Christina

Revista Brasileira de Parasitologia Veterinária

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dec 2017, Volume 26 N. 4 Pages 505 - 510

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

Resumo Animais selvagens possuem participação importante como carreadores dos vetores responsáveis por transmitir doenças e vários relatos destacam a participação de animais silvestres no ciclo do Anaplasma phagocytophilum, inclusive como hospedeiros do agente. O presente trabalho tem por objetivo relatar pela primeira vez a detecção molecular da infecção por um agente filogeneticamente associado a A. phagocytophilum em uma ave silvestre no interior do Paraná, Brasil. Foram colhidas 15 amostras de sangue originadas de onze espécies diferentes de aves, todas provenientes da região de Guarapuava. Apenas uma amostra pertencente a uma ave da espécie Penelope obscura foi positiva para o ensaio de nested PCR baseado no gene 16S rRNA. A árvore filogenética baseada na análise por máxima verossimilhança demonstrou que a sequência obtida no presente estudo se posicionou no mesmo clado com cepas de A. phagocytophilum isoladas de gatos domésticos no Brasil. O presente trabalho relata pela primeira vez a detecção molecular de Anaplasma sp. filogeneticamente relacionado à A. phagocytophilum, em um animal da espécie P. obscura, assim como a presença do parasita em uma ave silvestre do Estado do Paraná, Brasil.

Abstract Wild animals play an important role in carrying vectors that may potentially transmit pathogens. Several reports highlighted the participation of wild animals on the Anaplasma phagocytophilum cycle, including as hosts of the agent. The aim of this study was to report the molecular detection of an agent phylogenetically related to A. phagocytophilum isolated from a wild bird in the Midwest of the state of Paraná, Brazil. Fifteen blood samples were collected from eleven different bird species in the Guarapuava region. One sample collected from a Penelope obscura bird was positive in nested PCR targeting the 16S rRNA gene of Anaplasma spp. The phylogenetic tree based on the Maximum Likelihood analysis showed that the sequence obtained was placed in the same clade with A. phagocytophilum isolated from domestic cats in Brazil. The present study reports the first molecular detection of a phylogenetically related A. phagocytophilum bacterium in a bird from Paraná State.

https://doi.org/10.1590/s1984-29612017042 1098 downloads

Características dos primeiros casos de microcefalia possivelmente relacionados ao vírus Zika notificados na Região Metropolitana de Recife, Pernambuco
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Vargas, Alexander

; Saad, Eduardo

; Dimech, George Santiago

; Santos, Roselene Hans

; Sivini, Maria Auxiliadora Vieira Caldas

; Albuquerque, Luciana Carolina

; Lima, Patricia Michelly Santos

; Barreto, Idalacy de Carvalho

; Andrade, Michelly Evangelista de

; Estima, Nathalie Mendes

; Carvalho, Patrícia Ismael de

; Azevedo, Rayane Souza de Andrade

; Vasconcelos, Rita de Cássia de Oliveira

; Assunção, Romildo Siqueira

; Frutuoso, Lívia Carla Vinhal

; Carmo, Greice Madeleine Ikeda do

; Souza, Priscila Bochi de

; Wada, Marcelo Yoshito

; Oliveira, Wanderson Kleber de

; Henriques, Cláudio Maierovitch Pessanha

; Percio, Jadher

Epidemiologia e Serviços de Saúde

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dec 2016, Volume 25 N. 4 Pages 691 - 700

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

Resumo OBJETIVO: descrever os primeiros casos de microcefalia possivelmente relacionados ao vírus Zika em nascidos vivos notificados na Região Metropolitana do Recife, Pernambuco, Brasil. MÉTODOS: estudo descritivo de tipo série de casos (notificados de 1º de agosto a 31 de outubro de 2015), com dados obtidos dos registros médicos e de questionário aplicado às mães. RESULTADOS: foram confirmados 40 casos com microcefalia, distribuídos em oito municípios da Região Metropolitana do Recife, com maior concentração no Recife (n=12); a mediana do perímetro cefálico foi de 29 cm, do perímetro torácico, 31 cm, e do peso, 2.628 gramas; 21/25 casos apresentaram calcificação cerebral, ventriculomegalia ou lisencefalia; entre as 40 mães, 27 referiram exantema na gestação, 20 no primeiro trimestre e sete no segundo, além de prurido, cefaleia, mialgia e ausência de febre. CONCLUSÃO: a maioria dos casos apresentou características de infecção congênita; a maioria das mães apresentou quadro sugestivo de infecção pelo vírus Zika na gestação.

Abstract OBJECTIVE: to describe the first cases of microcephaly possibly related to Zika virus in live born babies reported in the Metropolitan Region of Recife, Pernambuco State, Brazil. METHODS: this was a descriptive case series study (cases reported between August 1st and October 31st 2015), using medical record data and data from a questionnaire answered by the mothers of the babies. RESULTS: 40 microcephaly cases were confirmed, distributed in eight municipalities within the Metropolitan Region, with Recife itself having the highest concentration of cases (n=12); median head circumference was 29 cm, median chest girth was 31 cm and median weight was 2,628 grams; 21/25 cases had brain calcification, ventriculomegaly or lissencephaly; 27 of the 40 mothers reported rash during pregnancy, 20 in the first trimester and 7 in the second trimester, as well as itching, headache, myalgia and absence of fever. CONCLUSION: the majority of the cases bore the characteristics of congenital infection; the clinical condition of the majority of mothers suggested Zika virus infection during pregnancy.

Resumen OBJETIVO: describir los primeros casos de microcefalia en nacidos vivos reportados al Departamento de Salud del Estado de Pernambuco, en la región metropolitana de Recife, Pernambuco, 2015. MÉTODOS: estudio epidemiológico descriptivo de serie de casos (reportados de 1 de agosto a 31 de octubre de 2015), con datos obtenidos de registros médicos y cuestionarios aplicados a las madres. RESULTADOS: 40 casos fueron confirmados con microcefalia, en ocho municipios de la región metropolitana de Recife, con mayor concentración de casos en Recife (n=12); la circunferencia media de la cabeza fue 29 cm, perímetro torácico 31 cm y peso 2.628 gramos; exámenes revelaron que 21/25 casos mostraron calcificación, dilatación ventricular o lisencefalia; de las 40 madres, 27 (68%) informan exantema durante la gestación, 20 (74%) en el primer trimestre y siete (26%) en la segunda, además de prurito, dolor de cabeza, mialgia y ausencia de fiebre. CONCLUSIÓN: la mayoría de los casos presenta características de infección congénita; la mayoría de las madres mostró características que sugieren infección por el virus Zika en el embarazo.

https://doi.org/10.5123/s1679-49742016000400003 3740 downloads

Características dos primeiros casos de microcefalia possivelmente relacionados ao vírus Zika notificados na Região Metropolitana de Recife, Pernambuco
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Vargas, Alexander

; Saad, Eduardo

; Dimech, George Santiago

; Santos, Roselene Hans

; Sivini, Maria Auxiliadora Vieira Caldas

; Albuquerque, Luciana Carolina

; Lima, Patricia Michelly Santos

; Barreto, Idalacy de Carvalho

; Andrade, Michelly Evangelista de

; Estima, Nathalie Mendes

; Carvalho, Patrícia Ismael de

; Azevedo, Rayane Souza de Andrade

; Vasconcelos, Rita de Cássia de Oliveira

; Assunção, Romildo Siqueira

; Frutuoso, Lívia Carla Vinhal

; Carmo, Greice Madeleine Ikeda do

; Souza, Priscila Bochi de

; Wada, Marcelo Yoshito

; Oliveira, Wanderson Kleber de

; Henriques, Cláudio Maierovitch Pessanha

; Percio, Jadher

Epidemiologia e Serviços de Saúde

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dec 2016, Volume 25 N. 4 Pages 691 - 700

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

https://doi.org/10.5123/s1679-49742016000400003 22574 downloads

Experimental infection with Brazilian Newcastle disease virus strain in pigeons and chickens
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Carrasco, Adriano de Oliveira Torres

; Seki, Meire Christina

; Benevenute, Jyan Lucas

; Ikeda, Priscila

; Pinto, Aramis Augusto

Brazilian Journal of Microbiology

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mar 2016, Volume 47 N. 1 Pages 231 - 242

Abstract: En | Text: En | PDF: En

Abstract This study was designed with the goal of adding as much information as possible about the role of pigeons (Columba livia) and chickens (Gallus gallus) in Newcastle disease virus epidemiology. These species were submitted to direct experimental infection with Newcastle disease virus to evaluate interspecies transmission and virus-host relationships. The results obtained in four experimental models were analyzed by hemagglutination inhibition and reverse transcriptase polymerase chain reaction for detection of virus shedding. These techniques revealed that both avian species, when previously immunized with a low pathogenic Newcastle disease virus strain (LaSota), developed high antibody titers that significantly reduced virus shedding after infection with a highly pathogenic Newcastle disease virus strain (São Joao do Meriti) and that, in chickens, prevent clinical signs. Infected pigeons shed the pathogenic strain, which was not detected in sentinel chickens or control birds. When the presence of Newcastle disease virus was analyzed in tissue samples by RT-PCR, in both species, the virus was most frequently found in the spleen. The vaccination regimen can prevent clinical disease in chickens and reduce viral shedding by chickens or pigeons. Biosecurity measures associated with vaccination programs are crucial to maintain a virulent Newcastle disease virus-free status in industrial poultry in Brazil.

https://doi.org/10.1016/j.bjm.2015.07.001 1944 downloads

10.

Cellulose acetate propionate coated titanium: characterization and biotechnological application
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Gomes, Guilherme da Silva

; Almeida, Arlete Tavares de

; Kosaka, Priscila Monteiro

; Rogero, Sizue Ota

; Cruz, Áurea Silveira

; Ikeda, Tamiko Ichikawa

; Petri, Denise Freitas Siqueira

Materials Research

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dec 2007, Volume 10 N. 4 Pages 469 - 474

Abstract: En | Text: En | PDF: En

Surfaces of pure titanium and Ti coated with cellulose acetate propionate (CAP) have been characterized by means of scanning electron microscopy X ray coupled with elemental microanalysis (SEM-EDS), ellipsometry, atomic force microscopy (AFM) and contact angle measurements. Coating Ti surfaces with CAP ultrathin films reduced original surface roughness. Surface energy and wettability of CAP covered Ti surfaces pure Ti surfaces were similar. The adsorption of lysozyme (LYZ), an antibacterial protein, onto Ti and CAP-coated Ti surfaces has been studied by means of ellipsometry and atomic force microscopy (AFM). The adsorption of LYZ was mainly driven by hydrophobic interaction between protein hydrophobic residues and CAP propyl groups. Pure Ti and CAP coated Ti surfaces presented no cytotoxicity effect and proved to be adequate substrates for cell adhesion. The biocompatibility of CAP coated Ti surfaces was attributed to the surface enrichment in glucopyranosyl residues and short alkyl side groups.

3861 downloads

11.

Antibacterial activity of medicinal plant extracts
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Ushimaru, Priscila Ikeda

; Silva, Mariama Tomaz Nogueira da

; Di Stasi, Luiz Claudio

; Barbosa, Luciano

; Fernandes Junior, Ary

Brazilian Journal of Microbiology

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dec 2007, Volume 38 N. 4 Pages 717 - 719

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

Avaliou-se a atividade antimicrobiana in vitro de extratos metanólicos de algumas plantas medicinais frente a Escherichia coli, Salmonella Typhimurium, Staphylococcus aureus e Enterococcus sp. O extrato metanólico de Caryophyllus aromaticus foi o mais eficaz para todas as bactérias testadas e apresentou a melhor atividade anti-S. aureus.

The present study aimed at evaluating the in vitro antimicrobial activity of methanolic extracts of some medicinal plants against Escherichia coli, Salmonella Typhimurium, Staphylococcus aureus and Enterococcus sp. The methanolic extract of Caryophyllus aromaticus presented the highest anti-S. aureus activity and was effective against all bacterial strains tested.

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