Irrespective of which of the two morse taper implant connection systems of activation was analyzed, tapped-in (Bicon) or screwed-in (Ankylos), this in vitro experiment showed bacterial leakage along the implant-abutment interface.
Plasmids coding for drug resistance and localized adherence (LA) to HeLa cells were found in two enteropathogenic Escherichia coli strains belonging to serotypes 055:Hand 055:H6. Strain 49-81 HSJ (055:H-) carries two plasmids, one coding for both ampicillin resistance (Apr) and LA (pMS49). Strain 71-82 HSJ (055:H6) harbors only one plasmid, coding for resistance to sulfadiazine, chloramphenicol, kanamycin, ampicillin, and LA (pMS71). Plasmids pMS49 and pMS71 were transferred to E. coli K-12 711 and from this strain to E. coli K-12 J53. Curing with acridine orange of an Apr LA' transconjugant showed that both
Wiedemann (1830) described Pterotaenia fasciata, asOrtalis fasciata, briefly diagnosing the species by its black ground colour, whitish stripes on thorax, five blackish stripes on wings and bright whitish abdomen. Steyskal (1968) recognized P. fasciata in family Otitidae. Nevertheless, the Diptera Site (2006) includes this species among the family Ulidiidae. The type-locality of P. fasciata is the city of Montevideo in Uruguay and the geographical distribution of the species is recorded to Bolivia, Uruguay, Argentina and Chile (Steyskal, 1968).In laboratory, Arce de Hamity (1989) inferred that life cycle of P. fasciata from egg to adult was 70±11 days. In this investigation, the adult life cycle (6±2 days) in laboratory differed from life cycle (42±8 days) of field collected adults, in Argentina. Immature stages breed in fruits and vegetal tissues decomposing its organic components, and then high abundance of P. fasciata in areas of land used to cultivate crops may be undesirable for a farmer.According with Rey (2003), flies play a role as mechanical vectors in the transmission of pathogens to susceptible hosts. New record of Pterotaenia fasciata (Wiedemann) (Diptera, Ulidiidae) inBrazil, a probably mechanical vector of enteric bacteriaABSTRACT. New record of Pterotaenia fasciata (Wiedemann) (Diptera, Ulidiidae) in Brazil, a probably mechanical vector of enteric bacteria. Pterotaenia fasciata is commonly recorded in rural areas in Argentina, but during a Diptera survey study developed in a reservoir which retains storm water from polluted canals in an urban area of Taboão da Serra municipality, SP, Brazil, we could capture P. fasciata adults. Enteric bacteria Escherichia coli T. Escherich, 1885 and Proteus sp. were isolated from P. fasciata collected in traps inside the reservoir and around it. Fecal coliforms and E. coli were found in the water of the reservoir. These records suggest that a high abundance of this species at urban areas with inadequate sewage canals should reveal these muscoid dipterans as mechanical vectors of enteric bacteria.KEYWORDS. Microbiology; Neotropical; Parasitology; Taxonomy; Urbanization.RESUMO. Novo registro de Pterotaenia fasciata (Wiedemann) (Diptera, Ulidiidae) no Brasil, um provável vetor mecânico de enterobactérias. Pterotaenia fasciata é encontrada freqüentemente em áreas rurais na Argentina, mas durante um estudo de levantamento de Diptera em um reservatório de retenção de enchentes em uma área urbana do município de Taboão da Serra, SP, Brasil, foram capturados adultos de P. fasciata. As enterobactérias Escherichia coli T. Escherich, 1885 e Proteus sp. foram isoladas de P. fasciata coletada em armadilhas no reservatório e em seu entorno.Coliformes fecais e E. coli foram encontrados na água do reservatório. Esses registros sugerem que a alta abundância dessa espécie em áreas urbanas sem saneamento básico poderia indicar esses dípteros muscóides como vetores mecânicos de enterobactérias.PALAVRAS-CHAVE. Microbiologia; Neotropical; Parasitologia; Taxonomia; Urbanização.The path...
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