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Carbapenem-resistant Klebsiella pneumoniae colonization in pediatric and neonatal intensive care units: risk factors for progression to infection BJID
Akturk,Hacer; Sutcu,Murat; Somer,Ayper; Aydın,Derya; Cihan,Rukiye; Ozdemir,Aslı; Coban,Asuman; Ince,Zeynep; Citak,Agop; Salman,Nuran.
Abstract Background Little is known about factors associated with carbapenem-resistant Klebsiella pneumoniae infections in pediatric patients, who are initally colonized with carbapenem-resistant Klebsiella pneumoniae. Materials and methods A retrospective case–control study was conducted involving pediatric and neonatal intensive care units throughout a five-year period (January 2010–December 2014). Clinical and microbiological data were extracted from Hospital Infection Control Committee reports and patients’ medical records. Risk factors were assessed in carbapenem-resistant Klebsiella pneumoniae colonized patients who developed subsequent systemic infection (cases) and compared to carbapenem-resistant Klebsiella pneumoniae colonized patients who did...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbapenem resistant Klebsiella pneumoniae; Infection; Colonization; Pediatric/Neonatal intensive care.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702016000200134
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High environmental stress and productivity increase functional diversity along a deep‐sea hydrothermal vent gradient ArchiMer
Alfaro Lucas, Joan Manel; Pradillon, Florence; Zeppilli, Daniela; Michel, Loic; Martinez‐arbizu, P; Tanaka, H; Foviaux, M; Sarrazin, Jozee.
Productivity and environmental stress are major drivers of multiple biodiversity facets and faunal community structure. Little is known on their interacting effects on early community assembly processes in the deep sea (>200 m), the largest environment on Earth. However, at hydrothermal vents productivity correlates, at least partially, with environmental stress. Here, we studied the colonization of rock substrata deployed along a deep‐sea hydrothermal vent gradient at four sites with and without direct influence of vent fluids at 1700 m depth in the Lucky Strike vent field (Mid‐Atlantic Ridge, MAR). We examined in detail the composition of faunal communities (>20 µm) established after two years and evaluated species and functional patterns. We...
Tipo: Text Palavras-chave: Colonization; Community assembly; Energy; Environmental filtering; Functional beta-diversity; Species beta-diversity.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00641/75342/76070.pdf
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Estrutura da comunidade das larvas de Chironomidae (Insecta: Diptera), em diferentes substratos artificiais e fases hídricas, no trecho superior do rio Paraná, Estado do Paraná, Brasil - doi: 10.4025/actascibiolsci.v32i2.5387 Biological Sciences
Anjos, Adriana Felix dos; UEM; Takeda, Alice Michiyo; UEM.
Este estudo teve como objetivo verificar a influência das fases hídricas sobre a composição, a densidade e a dominância das larvas de Chironomidae em diferentes tipos de substratos artificiais. As coletas foram realizadas quinzenalmente, entre os meses de agosto de 2004 e dezembro de 2005. A análise de agrupamento revelou diferenças na composição e densidade das morfoespécies entre as fases hídricas e, de acordo com o índice de dominância de Kownacki, Cricotopus sp. foi dominante ou subdominante em todos os substratos e fases hídricas. Na fase de águas baixas, a maior similaridade foi observada entre os substratos de mesma forma. Nesse período, os maiores valores de riqueza e densidade das larvas foram registrados nos substratos em forma de X. Na fase de...
Palavras-chave: Rio Paraná; Similaridade; Dominância; Colonização; Fases hídricas 2.05.00.00-9 Paraná river; Similarity; Dominance; Colonization; Hydrological phases.
Ano: 2010 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/5387
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Colonization of benthic organisms on different artificial substratum in Ilha Grande bay, Rio de Janeiro, Brazil BABT
Azevedo,Flávia Beatriz Beserra; Carloni,Giuliano Guilherme; Carvalheira,Lucia Verçosa.
The aim of this work was to evaluate the influence of three different types of artificial substrates - concrete, metal and rubber - on the colonization of benthic organisms, using a structure called Multiple Disc Sampling Apparatus or MDSA. The results confirmed the hypothesis that the communities of incrusting invertebrates have preferences in relation to the type and orientation of the substratum to be colonized. Concrete and rubber, rougher surfaces, were more attractive to the organisms than the metal used. The orientation also had big influence because of the sedimentation that probably acted on the superior face of the materials, hindered the colonization.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artificial substrata; Colonization; Benthic organisms.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000300012
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Colonization of synthetic sponges at the deep-sea Lucky Strike hydrothermal vent field (Mid-Atlantic Ridge): a first insight ArchiMer
Baldrighi, Elisa; Zeppilli, Daniela; Crespin, Rosalie; Chauvaud, Pierre; Pradillon, Florence; Sarrazin, Jozee.
The main objective of the present study was to investigate invertebrate colonization processes at deep-sea hydrothermal vents in response to environmental factors and to the presence of complex artificial substrata (i.e., synthetic sponges). We set out a pilot experiment at 1700 m depth on the Lucky Strike vent field (Eiffel Tower, Mid-Atlantic Ridge). Synthetic sponges were deployed in 2011 at five sites along a gradient of hydrothermal activity and were recovered in 2013, and the composition of macro- and meiofauna was assessed on four of them. The influence of temperature and fluid inputs on colonizer faunal abundance and diversity was analyzed. Faunal abundance and diversity decreased with increasing distance from vent emission. The colonizers were...
Tipo: Text Palavras-chave: Synthetic sponges; Colonization; Lucky Strike; Meiofauna; Macrofauna; Substratum type.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00410/52135/52937.pdf
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Parasites of native Cichlidae populations and invasive Oreochromis niloticus (Linnaeus, 1758) in tributary of Amazonas River (Brazil). Repositório Alice
BITTENCOURT, L. S.; PINHEIRO, D. A.; CARDENAS, M. Q.; FERNANDES, B. M.; DIAS-TAVARES, M..
This study provides the first investigation on acquisition of parasites in invasive O. niloticus by parasite species of native Cichlidae from the Igarapé Fortaleza basin, Northern Brazil. There were examined 576 specimens of 16 species of native cichlids and invasive O. niloticus collected in the main channel and the floodplain area of this tributary of Amazon River. The invasive O. niloticus was poorly parasitized having only Ichthyophthirius multifiliis, Trichodina centrostrigeata, Paratrichodina africana, Trichodina nobilis (Protozoa) and Cichlidogyrus tilapiae (Monogenoidea), and this host has not acquired any parasite species common to the native ichthyofauna region. In contrast, species of native cichlids showed rich fauna of parasites with...
Tipo: Artigo de periódico Palavras-chave: Animal parasite; Invasão biológica; Biological invasion; Parasito de peixe; Fish parasite; Colonization; Parasito animal.; Colonização..
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/990082
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An epidemiological study of Haemophilus influenzae at a Brazilian day care center BJID
Bonifácio da Silva,M.E.; Marin,J.M..
Day care centers are a relatively new phenomenon in Brazil that bring together large numbers of young children susceptible to contagious diseases. Haemophilus influenzae (Hi) is an important infection in the age range of those attending day care centers. In the present study, the carriage rate of Haemophilus influenzae was identified in 38 day care attendees age 6 to 37 months, and 23 staff members, at a day care center in Ribeirão Preto-São Paulo, in 1997. To identify the carriers, two nasopharyngeal swabs were collected; one in July and one in December. The rate of H. influenzae carriers among the children was 77%. Only 2 of 23 staff members (9%) had Hi. Among the children, there were 58 isolates in the two sampling periods; 6 of the Hi were serotype b,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Haemophilus influenzae; Day care; Colonization.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702001000500004
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A PECUÁRIA DE CORTE NO ESTADO DE MATO GROSSO AgEcon
Bonjour, Sandra Cristina de Moura; Figueiredo, Adriano Marcos Rodrigues; Marta, Jose Manuel Carvalho.
O artigo objetivou caracterizar a ocupação da pecuária de corte em Mato Grosso, enfocando diferentes aspectos do processo histórico e econômico, bem como da sua manutenção. Permitiu explicar as diversas tecnologias usadas na pecuária de corte a partir da colonização, classificando o estado em diferentes regiões e com características distintas. Identifica-se ainda a ampliação da produção e da qualidade do rebanho relacionada à migração recebida pelo estado com a produção de matéria-prima e a conseqüente instalação de frigoríficos em todas as regiões do estado. This paper characterized the livestock expansion in Mato Grosso focusing on different aspects of the historical and economic processes, as well as their maintenance. It allowed the explanation of the...
Tipo: Conference Paper or Presentation Palavras-chave: Pecuária de corte; Mato Grosso; Colonização; Livestock; Mato Grosso; Colonization; Livestock Production/Industries.
Ano: 2008 URL: http://purl.umn.edu/102468
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Aves de três remanescentes florestais do norte do Estado do Paraná, sul do Brasil, com sugestões para a conservação e manejo Zoologia
Bornschein,Marcos Ricardo; Reinert,Bianca Luiza.
One hundred eighty species in a preliminary inventory were identified. From these, 166 were in an area of 832.5 ha (Mata São Francisco State Park), 84 in another of 9.7 ha (Manoel Júlio de Almeida Municipal Forest) and 99 in the third remnant, briefly sampled, of 218 ha (Mata São Paulo). Comparing these numbers to inventories of nearby sites was considered that the larger area is poor in number of bird species, and believe this to be mainly due to the high degree of environmental degradation. Was considered that the smaller area is rich in birds, but its proximity (375 meters) to the third remnant certainly exeits strong influence. This paper presents the list of birds by site and with their relative frequency of occurrence. A new record for Paraná...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Birds; South of Brazil; Atlantic Forest endemics; Colonization; Conservation.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000300008
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Patch Size and Population Density: the Effect of Immigration Behavior Ecology and Society
Bowman, Jeff; Ontario Ministry of Natural Resources; jeff.bowman@mnr.gov.on.ca; Cappuccino, Naomi; Carleton University; ncappucc@ccs.carleton.ca; Fahrig, Lenore; Carleton University; lfahrig@ccs.carleton.ca.
Many habitat fragmentation experiments make the prediction that animal population density will be positively related to fragment, or patch, size. The mechanism that is supposed to result in this prediction is unclear, but several recent reviews have demonstrated that population density often is negatively related to patch size. Immigration behavior is likely to have an important effect on population density for species that do not show strong edge effects, for species that have low emigration rates, and during short-term habitat fragmentation experiments. We consider the effect that different kinds of immigration behaviors will have on population density and we demonstrate that only a minority of possible scenarios produce positive density vs. patch size...
Tipo: Peer-Reviewed Reports Palavras-chave: Colonization; Connectivity; Dispersal; Edge; Emigration; Experiment; Fragmentation; Immigration; Individuals-area relationships; Insular; Island biogeography; Landscape.
Ano: 2002
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Pressure ulcer as a reservoir of multiresistant Gram-negative bacilli: risk factors for colonization and development of bacteremia BJID
Braga,Iolanda A.; Brito,Cristiane S.; Diogo Filho,Augusto; Gontijo Filho,Paulo P.; Ribas,Rosineide M..
Abstract The purpose of this study was to identify the risk factors that predispose patients who are hospitalized with pressure ulcers (PUs) colonized by Gram-negative bacilli (GNB) to develop bacteremia. In addition, we also detected main phenotypes of resistance in infected and uninfected PUs. A prospective cohort study was conducted at the Clinical Hospital of the Federal University of Uberlândia including patients with Stage II or greater PUs, colonized or not with GNB, from August 2009 to July 2010. Infected ulcers were defined based on clinical signs and on positive evaluation of smears of wound material translated by a ratio of polymorphonuclear cells to epithelial cells ≥2:1, after Giemsa staining. A total of 60 patients with Stage II PUs were...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Pressure ulcer; Gram-negative bacilli; Colonization; Bacteremia.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000200171
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Ficopomatus enigmaticus, Ecologie, répartition en Bretagne et en France, nuisances et moyens de lutte sur le site atelier du port de Vannes ArchiMer
Camus, Patrick; Compere, Chantal; Blanchet, Aline; Dimeet, Joel; Hamon, Dominique; Lacotte, Nicolas; Peleau, Michel; Lassalle, Elisabeth.
This study [...] was carried out from June 1998 to January 2000 and enabled the assessment of the scientific knowledge on the biology, ecology and distribution of the Annelida Polychaeta sedentaria: Ficopomatus enigmaticus. [...] In order to better determine the characteristics of this species' environment and development cycle, a study was conducted in the worksite of the marina of Vannes. This study, mostly biological, was completed by a technological study on the fighting techniques (antifouling paints) used against the damage made by this worm on the boat hulls. In addition, this document presents some recommendations to follow in order to limit, or stop, the development of this "pollution".
Tipo: Text Palavras-chave: Marina harbours; Disturbance; Colonization; Ficopomatus enigmaticus; Port de plaisance; Pertubation; Colonisation; Ficopomatus enigmaticus.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/2000/rapport-6131.pdf
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Colonization-related functional traits of plants in a 50-hectare plot of secondary tropical forest Acta Botanica
Candido,Helder Marcos Nunes; Miazaki,Ângela; Pontara,Vanessa; Bueno,Marcelo Leandro; Solar,Ricardo; Gastauer,Markus; Meira-Neto,João Augusto Alves.
ABSTRACT The growth-survival trade-off hypothesis states that functional traits of stem, wood, leaves and fruits govern acquisitive and conservative strategies of plant species that grow/survive differently in forests. We aimed to determine whether heterogeneity during the colonization of a secondary Atlantic Forest fragment causes differences in colonization-related traits and determines taxonomic composition of subplots. A total of 5,078 subplots were censused with leaf and fruit traits and height measurements being determined for each tree of each species, and with averaged-abundance-weighted values calculated for each subplot. A dendrogram was generated from the taxonomic composition of subplots using Sorensen similarity and UPGMA clustering. A total...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Colonization; Fruit size; LEEP 50-ha plot; Leaf functional traits; Plant height; Wood density; Plant functional traits; Phytosociology.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000100001
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Distribution of virulence genes sefC, pefA and spvC in Salmonella Enteritidis phage type 4 strains isolated in Brazil BJM
Castilla,Karina Salvagni; Ferreira,Claudete Serrano Astolfi; Moreno,Andrea Micke; Nunes,Iolanda Aparecida; Ferreira,Antônio José Piantino.
The distribution of virulence genes, sefC, pefA and spvC, was investigated in 110 Salmonella Enteritidis phage type 4 strains by polymerase chain reaction. Their influence in the caecal colonization and invasion of liver and spleen of one-day-old chickens was studied. Eight isolates were negative for the spvC gene, three for the pefA gene and one, for the sefC gene. These results allowed grouping the strains into four genotypes. Presence of these genes did not influence bacteria invasion in the liver and spleen of the chickens ten days after infection, although the presence of more than one fimbrial gene can be related to caecal colonization.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Salmonella; Virulence genes; Colonization; Invasion.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000200007
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Infection and colonization by Gram-negative bacilli in neonates hospitalized in High Risk Nursery at Uberlandia Federal University Hospital: etiology, resistant phenotypes and risk factors BJM
Cezário,Renata Cristina; Ribas,Rosineide Marques; Abdallah,Vânia Olivetti Steffen; Carneiro,Claudia Lúcia; Gontijo Filho,Paulo P..
The aims of this study were to determine endemic and epidemic infection due to Gram-negative bacilli, risk factors associated with colonization and infection by these organisms and the resistance phenotypes (ESBL, AmpC) in neonates admitted in a High Risk Nursery. The study was conducted during a 21 month period and included: a prospective study to evaluate the neonates with hospital infection and the use of third-generation cephalosporins; a case-control study to determine the risk factors associated with colonization/infection. Rectal and oropharynx cultures were also performed in four opportunities (September and November 2001, February and August 2002). The isolates for which the resistance of ceftazidime was 2 mg/mL were suspected of producing ESBL or...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Infection; Colonization; Neonates; Gram-negative bacilli; Resistance phenotype.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000200004
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Habitat Shape, Species Invasions, and Reserve Design: Insights from Simple Models Ecology and Society
Cumming, Graeme; University of Florida; cummingg@wec.ufl.edu.
Species invasions have become a major threat to global biodiversity. We currently lack a general theory of species invasions that allows us to make useful predictions about when and where invasions will occur, whether they will be successful, and whether they will alter ecosystem function in invaded habitats. One line of enquiry in developing such a theory is to focus on the characteristics of successful invaders. A second, complementary approach is to examine habitats of interest more closely and ask how the properties of the habitat that is being invaded affect the likelihood of invasion success. In this paper, I consider the importance of habitat shape (also termed "habitat topology" or "habitat geometry") as a variable affecting the dispersal and...
Tipo: Peer-Reviewed Reports Palavras-chave: Cellular automaton model; Colonization; Connectivity; Dispersal; Habitat complexity; Habitat geometry; Habitat shape; Landscape ecology; Reaction-diffusion model; Reserve design; Reserve networks; Species invasion.
Ano: 2002
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Colonization of the Corumbá Reservoir (Corumbá River, Paraná River Basin, Goiás State, Brazil) by the "lambari" Astyanax altiparanae (Tetragonopterinae; Characidae) BABT
Dias,Rosa Maria; Bailly,Dayani; Antônio,Rosimeire Ribeiro; Suzuki,Harumi Irene; Agostinho,Angelo Antonio.
This work aimed to determine which population features were important to the colonization process of Astyanax altiparanae in the Corumbá Reservoir. The species presented wide spatial-temporal distribution, caught in all months and sites. Higher CPE values were recorded upstream from the reservoir during the filling phase. In this phase, reproductive activity was intense upstream and moderate in the tributaries. However, a fall in abundance of juveniles was observed after the formation of the reservoir. Among the most relevant population features to grant a successful colonization were wide geographic distribution, ability to occupy and spawn in lentic habitats and feeding flexibility.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Astyanax altiparanae; Reservoir; Colonization; Reproduction.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000300017
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La décadence d'une ville précoloniale du Togo, Aného, en pays Guin OceanDocs
Dovi, Q.; Nyassogbo, G..
Tipo: Journal Contribution Palavras-chave: Pays guin; Aného; Coastal zone; Colonization; Environmental conditions; Environmental impact; Nutritive value; Population density; Population structure; Product development; Rivers; Environmental impact; Nutritive value; Population structure; Rivers; Environmental conditions; Population density; Product development; Http://aims.fao.org/aos/agrovoc/c_24420; Http://aims.fao.org/aos/agrovoc/c_5278; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_6617; Http://aims.fao.org/aos/agrovoc/c_32980; Http://aims.fao.org/aos/agrovoc/c_6112; Http://aims.fao.org/aos/agrovoc/c_16018.
Ano: 2003 URL: http://hdl.handle.net/1834/1067
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Periphytic algal community in artificial and natural substratum in a tributary of the Rosana reservoir (Corvo Stream, Paraná State, Brazil) - doi: 10.4025/actascibiolsci.v32i4.4627 Biological Sciences
Felisberto, Sirlene Aparecida; Universidade Federal de Goiás; Rodrigues, Liliana; Universidade Estadual de Maringá.
Periphytic algal community in artificial and natural substratum in a tributary of the Rosana reservoir (Corvo Stream, Paraná State, Brazil). This study evaluated the heterogeneity in periphytic algal community, under the influence of time colonization on artificial substratum. We also examined which abiotic variables most influenced the community in natural and artificial substratum. Egeria najas Planchon was used as natural substratum, and a plastic plant, as artificial. This experiment was carried out in a lateral arm from Rosana Reservoir, formed by Corvo Stream (Paranapanema river basin), in the period from November 21st to December 12nd, 2003, characterized as a warm and rainy period. Changes in species composition were assessed using the similarity...
Palavras-chave: 2.00.00.00-6; 2.05.02.00-1 Ecology; Colonization; Phycoperiphyton; Zygnemaphyceae; Similarity Ecologia Ecology; Colonization; Phycoperiphyton; Zygnemaphyceae; Similarity.
Ano: 2010 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4627
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Etude experimentale de la colonisation de surfaces par les bacteries, en eau de mer circulante ArchiMer
Fera, P; Prieur, D.
Before the building of an (OTEC) power plant, and experimental station was built near the entrance of the Bay of Brest in order to do preliminary studies. Using these facilities, the bacterial colonization of three substrata (stainless steel UB6, aluminium AG4, polycarbonate filters) was studied in an open seawater system, with a speed of 0,7 m s super(-1). The study was performed between May 1983 and May 1984, including seven experiments of 15 days each. Bacteria colonizing the metallic surfaces were counted by scanning electron microscopy, and bacteria colonizing the polycarbonate filters counted by epifluorescence microscopy. On the three substrata, bacterial colonization occurred in three successive stages: initial colonization, sometimes unsteady...
Tipo: Text Palavras-chave: Fouling; OTEC plants; Bacteria; Colonization; Adhesion; Microbiological analysis; Surface films.
Ano: 1984 URL: http://archimer.ifremer.fr/doc/1984/acte-964.pdf
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