Macrolide Resistance in the Complex: Implications for Integrative and Conjugative Elements.

The recognition of the complex (AUC) as an emerging uropathogen has led to growing concerns due to a limited understanding of its disease spectrum and antibiotic resistance profiles. Here, we investigated the prevalence of macrolide resistance within urinary AUC isolates, shedding light on potential genetic mechanisms. Phenotypic testing revealed a high rate of macrolide resistance: 45%, among a total of 189 urinary AUC isolates.

Microbroth dilution method for antibiotic susceptibility testing of fastidious and anaerobic bacteria of the urinary microbiome.

Unlabelled: Bacterial isolates from the human urinary microbiome have been extensively studied for their antibiotic resistance; however, little work has been done on those isolates that are difficult to grow . This study was designed to qualify a serum-based medium, New York City Broth III (NYCIII), and a broth microdilution method to determine the antibiotic susceptibility of previously underreported or undescribed microbes that have a difficult time growing in standard Mueller-Hinton broth. Here, we demonstrate that NYCIII microbroth dilution can be an effective method for the determination of antibiotic susceptibility of species found in the human urinary microbiome.

Complete genome sequences of ATCC TSD-300, ATCC TSD-301, and ATCC TSD-302.

Previously identified under the single designation of , three distinct taxonomic species have been distinguished as and . Here, we present the complete genome sequences of the type strains of these species assembled via a combination of short-read and long-read sequencing techniques.Registered at ClinicalTrials.

Taxonomic considerations on with proposal of subdivision into , sp. nov., sp. nov., and sp. nov.

Average nucleotide identity analysis, based on whole genome sequences of 115 strains previously identified as , an emerging uropathogen, discriminates at least six unique genomic taxa. The whole genome analysis affords clearer species boundaries over 16S rRNA gene sequencing and traditional phenotypic approaches for the identification and phylogenetic organization of species. The newly described species can be differentiated by matrix-assisted laser desorption ionization time-of-flight analysis of protein signatures.

cultures maintain stable subpopulation structure during long-term evolution.

How genetic variation is generated and maintained remains a central question in evolutionary biology. When presented with a complex environment, microbes can take advantage of genetic variation to exploit new niches. Here we present a massively parallel experiment where WT and repair-deficient () populations have evolved over 3 y in a spatially heterogeneous and nutritionally complex environment.