Consulta: creatorFacets:"Freire,Roberta Lemos"
Registros recuperados: 7
Data/hora: 11/06/2024 07:16:20

Evaluation of experimental Toxoplasma gondii (Nicolle and Manceaux, 1909) infection in pigs by bioassay in mice and polymerase chain reaction
Provedor de dados: Brazilian Jounarl of Veterinary
Autores: Yai,Lucia Eiko Oishi; Vianna,Manoella Compostrini Barreto; Soares,Rodrigo Martins; Cortez,Adriana; Freire,Roberta Lemos; Richtznhain,Leonardo José; Gennari,Solange Maria.
The aim of the present experiment was to standardize a nested polymerase chain reaction (nPCR) for the detection of Toxoplasma gondii in tissues of experimentally infected pigs and to compare the performance of nPCR with the standard isolation technique, the bioassay in mice. Comparison between the two methods was done testing eight 4 month-old pigs orally inoculated with 5 x 10(4) oocysts of Toxoplasma gondii (AS-28 strain) and three non-infected pigs at the same age, kept as control. All animals were euthanatized 47 days after infection and samples of brain, heart, tongue and retina were collected from each animal for analysis by nPCR and bioassay in mice. By using the bioassay, Toxoplasma gondii was detected in 4 infected pigs, being two in the retina,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Toxoplasma gondii; Pig; NestedPCR; Bioassay; Diagnosis.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962003000300010

Gestational toxoplasmosis in Paraná State, Brazil: prevalence of IgG antibodies and associated risk factors
Provedor de dados: Brazilian Journal of Infectious Diseases
Autores: Lopes-Mori,Fabiana Maria Ruiz; Mitsuka-Breganó,Regina; Bittencourt,Laura Helena França de Barros; Dias,Renata Cristina Ferreira; Gonçalves,Daniela Dib; Capobiango,Jaqueline Dario; Reiche,Edna Maria Vissoci; Morimoto,Helena Kaminami; Freire,Roberta Lemos; Navarro,Italmar Teodorico.
The aim of the present study was to verify the association between seropositivity for IgG anti-Toxoplasma gondii antibodies and social, economic and environmental variables of pregnant women attending the public health centers of Paraná, Brazil. From January 2007 to July 2010, 2226 pregnant women were interviewed and detection of anti-T. gondii specific IgG and IgM antibodies was performed by chemiluminescence test. Seropositivity for anti-T. gondii IgG was observed in 1151 (51.7%) pregnant women, 29 of which (1.3%) presented IgM reagent with IgG of high avidity. The variables associated with the presence of IgG were residency in the rural area, more than one pregnancy, less than or equal to eight years schooling, low per capita income, age group, raw or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seroepidemiology; Prevalence; Toxoplasmosis; Pregnancy.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000400004

Toxoplasma gondii infection in pregnancy
Provedor de dados: Brazilian Journal of Infectious Diseases
Autores: Lopes,Fabiana Maria Ruiz; Gonçalves,Daniela Dib; Mitsuka-Breganó,Regina; Freire,Roberta Lemos; Navarro,Italmar Teodorico.
Toxoplasmosis is caused by an intracellular protozoan, Toxoplasma gondii, which has a wide geographical distribution. The main infection routes are ingestion of cysts from raw or badly-cooked meat, ingestion of oocysts from substrates contaminated with the feces of infected felines and congenital transmission by tachyzoites. The congenital form results in a severe systemic disease, because if the mother is infected for the first time during gestation, she can present a temporary parasitemia that will infect the fetus. Many of the clinical symptoms are seen in congenitally-infected children, from a mild disease to serious signs, such as mental retardation. Early diagnosis during the pregnancy is highly desirable, allowing prompt intervention in cases of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Toxoplasmosis; Toxoplasma gondii; Congenital transmission; Pregnant women.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000500011

Zoonoses in humans from small rural properties in Jataizinho, Parana, Brazil
Provedor de dados: Brazilian Journal of Microbiology
Autores: Gonçalves,Daniela Dib; Benitez,Aline; Lopes-Mori,Fabiana Maria Ruiz; Alves,Lucimara Aparecida; Freire,Roberta Lemos; Navarro,Italmar Teodorico; Santana,Maria Aparecida Zanella; Santos,Luís Roberto Alves dos; Carreira,Teresa; Vieira,Maria Luísa; Freitas,Julio Cesar de.
The aim of this study was to conduct a serological survey for Lyme diseases, brucellosis, leptospirosis and toxoplasmosis and identify the risk variables related to these zoonoses in humans living in the rural area of Jataizinho, state of Parana, Brazil. A total of 63 rural properties were surveyed. Additionally, 207 serum samples collected from these rural area inhabitants were tested for indirect immunofluorescence (IFI) and western blots (WB) were performed to detect Borrelia burgdorferi (sensu lato); a tamponated acidified antigen test (AAT) and 2-mercaptoethanol (2-ME) were used to detect antibodies of Brucella abortus; the microscopic agglutination test (MAT) was carried out to detect antibodies anti-Leptospira spp. and IFI was used to find...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lyme disease; Leptospirosis; Brucellosis; Toxoplasmosis; Human; Antibody.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100018

Fatores de risco associados à mastite bovina causada por Prototheca zopfii
Provedor de dados: Ciência Rural
Autores: Yamamura,Aline Artioli Machado; Müller,Ernst Eckhardt; Freire,Roberta Lemos; Freitas,Júlio César de; Pretto-Giordano,Lucienne Garcia; Toledo,Roberta dos Santos; Ribeiro,Márcio Garcia.
Este trabalho teve como objetivo o estudo de fatores de risco associados à mastite bovina causada por Prototheca zopfii. Foram analisadas 13 propriedades leiteiras dos Estados do Paraná e de São Paulo, segundo os seguintes critérios de seleção: confirmação prévia de casos de mastite por Prototheca spp., triagem pela pesquisa de Prototheca spp. em tanques de expansão e latões e rebanhos com contagem de células somáticas acima de 5x105cel mL-1. As amostras coletadas consistiram de: leite, água, solo, fezes e swab de teteiras. Prototheca spp. foi isolada de amostras de leite dos quartos mamários com mastite clínica ou subclínica em uma propriedade e de amostras de leite e do ambiente em quatro propriedades, nas quais foi isolada em amostras de: água de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mastite bovina; Bovinos leiteiros; Alga; Prototheca spp.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000300025

An outbreak of caprine toxoplasmosis - investigation and case report
Provedor de dados: Ciência Rural
Autores: Ferreira Neto,José Mauricio; Ferreira,Fernanda Pinto; Miura,Ana Carolina; Almeida,Jonatas Campos de; Martins,Felippe Danyel Cardoso; Souza,Marielen de; Bronkhorst,Dalton Evert; Romanelli,Paulo Roberto; Pasquali,Aline Kuhn Sbruzzi; Santos,Hannah Lia Ettiene Peruch Lemos dos; Benitez,Aline do Nascimento; Caldart,Eloiza Teles; Zanella,Luiz Francisco; Freire,Roberta Lemos; Navarro,Italmar Teodorico.
ABSTRACT: The present study aimed to investigate an abortion outbreak in a dairy goat herd in the municipality of Arapoti, Parana, Brazil. At the beginning of the outbreak, blood samples were collected from 33 goats with clinical signs; later, of the whole goat herd, two cats and two dogs. Milk samples were collected from 78 lactating goats. Four environmental soil samples and four samples of feed residue from goat feeders were collected too. Immunofluorescence antibody test (IFA) was used for serodiagnosis, the molecular analysis was conducted by means of the polymerase chain reaction (PCR), for the isolation of the etiological agent the bioassay was used. The results of the IFA revealed that 76.53% (137/179) of the goats, two dogs and two cats were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Toxoplasma; Goats. IFA; PCR; Bioassay.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000500500

Fatores de risco associados a soropositividade para leptospirose em matrizes suínas
Provedor de dados: Ciência Rural
Autores: Delbem,Ádina Cléia Botazzo; Freire,Roberta Lemos; Silva,Caio Abércio da; Müller,Ernst Eckehardt; Dias,Ricardo Augusto; Ferreira Neto,José Soares; Freitas,Julio Cesar de.
A leptospirose é uma zoonose amplamente difundida e de grande importância sócio-econômica para a suinocultura. Com o objetivo de individualizar condutas de manejo ou condições ambientais que estejam relacionadas ao risco de infecção por leptospirose, foram estudadas 298 matrizes suínas provenientes de granjas da região norte do Estado do Paraná. Todos os animais foram submetidos à prova de soroaglutinação microscópica e para cada um deles foi aplicado um questionário epidemiológico, que procurou investigar variáveis que poderiam estar associadas a essa infecção. Os resultados obtidos foram submetidos ao teste c², seguido de análise multivariada. Foram detectados títulos de anticorpos &gt;100 em 132 matrizes suínas (44,3%), sendo em maior freqüência contra...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Leptospirose; Matrizes suínas; Fatores de risco; Diagnóstico.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000300029