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Registros recuperados: 15 | |
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Zanella,Janice; Costa,Sergio Olavo Pinto da; Zacaria,Jucimar; Echeverrigaray,Sergio. |
Acanthamoeba are abundant in a wide range of environments, and some species are responsible for cutaneous infections, keratitis, and granulomatous amoebic encephalitis (GAE). The conventional detection and isolation of amoeba from clinical and environmental samples involves sampling and culture on non-nutrient Ágar medium. Although efficient, this system requires several transfers in order to eliminate contaminants, and is not appropriate for the isolation of individual amoeba from samples with a biodiverse community. In this study we propose an alternative method for the isolation of monocystic clones of Acanthamoeba. The propose method involves sampling, enrichment, encystment induction, and direct cysts micromanipulation and culture on Ágar plates. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acanthamoeba; Monocystic culture; Micromanipulation. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000100001 |
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Guerra,Ivani M.F.; Fadanelli,Raquel; Figueiró,Manuela; Schreiner,Fernando; Delamare,Ana Paula L.; Wollheim,Claudia; Costa,Sérgio Olavo P.; Echeverrigaray,Sergio. |
Aeromonas were isolated from 27 (6.6%) of 408 patients admitted with acute gastroenteritis in two hospitals at Rio Grande do Sul, Brazil. Isolates were classified as A. hydrophila (51.8%), A. caviae (40.8%), and A. veronii biotype sobria (7.4%). The highest prevalence of Aeromonas associated infections occurred in lactants and children. Virulence genes (aerA -aerolysin/hemolysin, ahpA -serine-protease, satA - glycerophospholipid-cholesterol acyltransferase, lipA -lipase, and ahyB -elastase) and virulence factors (hemolytic, proteolitic, lipolitic activities, and biofilm formation) were identified in most A. hydrophila and A. veronii biotype sobria isolates, with lower frequencies on A. caviae. All Aeromonas isolates were resistant to ampicillin,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aeromonas; Diarrhea disease; Virulence factors; Antimicrobial resistance. |
Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000400011 |
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Michelim,Lessandra; Muller,Gabriela; Zacaria,Jucimar; Delamare,Ana Paula Longaray; Costa,Sérgio Olavo Pinto da; Echeverrigaray,Sergio. |
Proteus mirabilis is one of the most important pathogens associated with complicated urinary tract infections (acute pyelonephritis, bladder infections, kidney stones) and bacteremia, affecting patients with anatomical abnormalities, immunodeficiency, and long-term urinary catheterization. For epidemiological purposes, various molecular typing methods, such as pulse-field gel electrophoresis (PFGE) or ribotyping, have been developed for this pathogen. However, these methods are labor intensive and time-consuming. We evaluated the discriminatory power of several PCR-based fingerprinting methods (RAPD, ISSR, ERIC-PCR, BOX-PCR and rep-PCR) for P. mirabilis clinical isolates. Typing patterns and clustering analysis indicated that RAPD, BOX-PCR and ERIC-PCR... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Proteus mirabilis; Molecular markers; Fingerprinting; PCR. |
Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702008000500014 |
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Fracaro,Fernando; Sartori,Marcelo; Bizzani,Ernesto; Grelman,Etmar; Echeverrigaray,Sergio. |
O repolho (Brassica oleracea var. capitata) é uma das plantas hortícolas mais importantes na região nordeste do Rio Grande do Sul. Assim sendo, o objetivo do presente trabalho foi identificar os melhores cultivares e híbridos de repolho para esta região. Quinze materiais comerciais de repolho, de distintos distribuidores e origens, foram avaliados quanto ao seu comportamento agronômico em Veranópolis, RS, de julho a novembro de 1997, adotando a tecnologia usualmente recomendada para esta região. As maiores produtividades foram obtidas com os híbridos Shinsei (54,8t/ha), Japonês (53,6t/ha), Astrus (48,6t/ha) e Kenzan (44,8t/ha), e o cultivar Brunswick (43,5t/ha). Entretanto, considerando a preferência do mercado por repolhos de 1 a 1,5kg, os melhores... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Repolho; Competição de cultivares; Produção. |
Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84781999000300014 |
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Tozoni,Daniela; Zacaria,Jucimar; Vanderlinde,Regina; Delamare,Ana Paula Longaray; Echeverrigaray,Sergio. |
The purpose of this work was to stud the biodegradation of citronellol, citronellal and citronellyl acetate by a soil Pseudomonas mendocina strain (IBPse 105) isolated from a Cymbopogon windelandi field. This strain efficiently used citronellol, citronellal, citronellyl acetate and myrcene as sole source of carbon, but was not able to grow on other 15 monoterpenoids evaluated. Gas chromatography-mass spectrometry (GC-MS) analysis of metabolites accumulation during P. medocina IBPse 105 growth on citronellol showed that this strain uses the citronellol catabolic pathway described for other species of the genus. IBPse 105 degradation of citronellyl acetate initiates by its hydrolysis to citronellol. The mini-Tn5 insertion in mutant IBPse 105-303, impaired in... |
Tipo: Journal article |
Palavras-chave: Biodegradation; Citronellol catabolism; Monoterpenes degradation; P. mendocina. |
Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000200002 |
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Grazziotin,Felipe; Echeverrigaray,Sergio. |
The genetic relationships among 11 species of Bothrops found in Brazil were determined using random amplified fragment (RAPD) information. A total of 239 amplified bands were scored using 20 aleatory primers. Most of the bands (88.7%) were polymorphic. Phylogenetic analysis of the data determined three similarity groups within Bothrops: Group I- B. alternatus, B. neuwiedi, B. cotiara, and B. jararacusu; Group II- B. insularis, B. jararaca, and B. erythromelas; and Group III- B. moojeni, B. leucurus, and B. atrox. These groups coincided with those obtained by other methods, indicating that RAPD's could be a useful tool for the evaluation of genetic relationships at the interspecific level. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bothrops; RAPD; Molecular markers; Genetic relationship. |
Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000300005 |
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Registros recuperados: 15 | |
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