RESUMEN
Staphylococcus warneri does not generally cause serious infections in humans. We report a case of endocarditis in a healthy individual with no known past medical history. S. warneri was identified in her blood cultures and echocardiographic evidence confirmed the diagnosis of bacterial endocarditis. There was no apparent cause for her infection, and risk factors such as invasive treatment or medical implant were not present. This rare clinical presentation illustrates the importance of not overlooking low virulence species of Staphylococcus, as they can potentially serve as opportunistic etiological agents for endocarditis, especially among the elderly population.
RESUMEN
As a coagulase negative Staphylococcus species, S. caprae is not considered as a clinically-significant member, unlike S. epidermidis. In this report, we describe a case of sepsis resulting from S. caprae infection. This relatively young woman was in generally good health and contracted S. caprae most probably during her treatment of an acute pulmonary embolism. The purpose of this report is to raise awareness of this otherwise innocuous staphylococcal species in clinical settings.
RESUMEN
Strain ATCC 9341, currently known as Micrococcus luteus, has been designated as a quality-control strain in a number of applications. It is also cited as the standard culture in several official methods and manuals, as well as the Code of Federal Regulations. Over the years, it has become apparent that ATCC 9341 does not resemble other M. luteus strains; however, its phenotypic characteristics alone were ambiguous. Recently, a polyphasic study was performed in which molecular data were combined with cytochemical properties and physiological characteristics. The results clearly indicate that ATCC 9341 is a member of the genus Kocuria. Thus, it is proposed to reclassify ATCC 9341 as Kocuria rhizophila and to alert users worldwide of this name change.
Asunto(s)
Micrococcaceae/clasificación , Micrococcus luteus/clasificación , ADN Bacteriano/genética , ADN Ribosómico/genética , Micrococcaceae/genética , Micrococcaceae/metabolismo , Micrococcus luteus/genética , Micrococcus luteus/metabolismo , Datos de Secuencia Molecular , Fenotipo , ARN Bacteriano/genética , ARN Ribosómico 16S/genética , Terminología como AsuntoRESUMEN
In order to implement a new and reliable method for characterizing different species of Legionella, a genetic fingerprinting study with an automated ribotyping system (RiboPrinter) was completed with members of this genus which were deposited at the American Type Culture Collection. The RiboPrinter examined the different patterns of EcoRI digestion fragments from the rRNA operons of 110 strains, representing 48 of the 49 described Legionella species as well as 70 serogroups of those species. Distinctive and consistent patterns were obtained for the type strains of the 48 species investigated. Legionella pneumophila subsp. fraseri and L. pneumophila subsp. pascullei each generated a specific pattern, whereas L. pneumophila subsp. pneumophila produced six different fingerprint patterns. No correlation seemed to exist between the ribotypes obtained and the 15 serotypes of L. pneumophila. For the other species, those with two known serogroups presented two distinctive patterns with the RiboPrinter with the exception of L. hackeliae and L. quinlivanii, which yielded only one pattern. We also encountered ribotypes for strains which were not identified to the species level. The ribotypes generated for these strains with the RiboPrinter did not match those generated for known type strains, suggesting the putative description of new serogroups or species. Although the automated system did not have sufficient discriminatory ability to serve as an epidemiological tool in a clinical setting, it appeared to be a powerful tool for general genomic analysis of the Legionella isolates (e.g., determination of new species) and assessment of the interrelationship among Legionella strains through the RiboPrinter database connection.