Eight coagulase-negative, oxidase-negative and novobiocin-susceptible staphylococcal strains were isolated from the gastrointestinal tracts of South American squirrel monkeys (Saimiri sciureus L.). These strains were differentiated from known staphylococcal species on the basis of 16S rRNA gene and hsp60 gene sequencing, and from the most closely related species by using DNA-DNA hybridization, ribotyping, whole-cell protein profiles and biotyping. Phylogenetic analysis based on 16S rRNA gene sequences confirmed that these strains are members of the Staphylococcus aureus species group (99% similarity) but are biochemically similar to Staphylococcus piscifermentans, from which they can be phenotypically distinguished by resistance to polymyxin B, acid production from D-mannitol, the inability to hydrolyse aesculin and DNA and the absence of alpha-glucosidase. On the basis of these analyses, a novel species of the genus Staphylococcus is described, for which the name Staphylococcus simiae sp. nov. is proposed, with CCM 7213(T) (=LMG 22723(T)) as the type strain.
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http://dx.doi.org/10.1099/ijs.0.63590-0 | DOI Listing |
Braz J Microbiol
June 2023
Instituto de Tecnologia em Imunobiológicos-Bio-Manguinhos/Fiocruz, Avenida Brasil 4365, Pavilhão Rocha Lima, sala 412, Rio de Janeiro, RJ, CEP21040-900, Brazil.
Bacterial nasal colonization is common in many mammals and Staphylococcus represents the main pathogen isolated. Staphylococcus nasal carriage in humans constitutes a risk factor for Staphylococcus infections pointing out the need for animal experimentation for nasal colonization studies, especially for vaccine development. A limitation in addressing this hypothesis has been a lack of appropriate animal model.
View Article and Find Full Text PDFBiometals
February 2022
Nuclear Medicine Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
The interest of many has been attracted by plant-mediated synthesizing procedures for nanoparticles since they provide certain qualities including being cost-effective, quick, and compatible with the environment. In this regard, this work introduces the production of selenium-nanoparticles (Se-NPs) in a biological manner utilizing aqueous extracts of Rosmarinus officinalis (R. officinalis).
View Article and Find Full Text PDFMol Microbiol
January 2022
Architecture et Réactivité de l'ARN, UPR9002, CNRS, Université de Strasbourg, Strasbourg, France.
Staphylococcus aureus RsaG is a 3'-untranslated region (3'UTR) derived sRNA from the conserved uhpT gene encoding a glucose-6-phosphate (G6P) transporter expressed in response to extracellular G6P. The transcript uhpT-RsaG undergoes degradation from 5'- to 3'-end by the action of the exoribonucleases J1/J2, which are blocked by a stable hairpin structure at the 5'-end of RsaG, leading to its accumulation. RsaG together with uhpT is induced when bacteria are internalized into host cells or in the presence of mucus-secreting cells.
View Article and Find Full Text PDFmBio
December 2021
Department of Microbiology and Molecular Genetics, University of Pittsburghgrid.21925.3d, Pittsburgh, Pennsylvania, USA.
Staphylococcus aureus is the most pathogenic member of the While it acquired an arsenal of canonical virulence determinants that mediate pathogenicity, it has also metabolically adapted to thrive at sites of inflammation. Notably, it has evolved to grow in the presence of nitric oxide (NO·). To this end, we note that the Rex regulon, composed of genes encoding dehydrogenases, metabolite transporters, and regulators, is much larger in S.
View Article and Find Full Text PDFJ Zoo Wildl Med
March 2019
Royal Veterinary College, Hawkshead Lane, Hatfield, Hertfordshire AL9 7TA, United Kingdom.
Livingstone's fruit bats () are critically endangered and a captive population has been established as part of the International Union for Conservation of Nature Species Action Plan. The largest colony, in Jersey Zoo, was sampled for staphylococcal carriage and at infection sites, as disease associated with staphylococci had previously been found. Staphylococci were cultured from swabs from 44 bats (skin, oropharynx, mouth ejecta, skin lesions) and from their enclosure.
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