Publications by authors named "Katsutoshi Izumi"
This study aimed to investigate the current trends in antimicrobial resistance among Pseudomonas aeruginosa clinical isolates of canine and feline origin and the prevalence of their sequence types (STs) and type III secretion system (T3SS) virulotypes, which remains unknown in Japan. A total of 240 nonduplicate clinical isolates of P. aeruginosa from dogs (= 206) and cats (= 34) collected from 152 primary care animal hospitals between August 2017 and October 2019 were examined.
View Article and Find Full Text PDFThe aim of this study was to investigate the presence of colistin- and/or tigecycline-resistant spp. in influents from four wastewater treatment plants (WWTPs), which partly reflect the gut microbiome of human populations. Colistin- and tigecycline-resistant isolates (K30/ST29) were detected four times from the WWTP A during a period of 3 months.
View Article and Find Full Text PDFArticle Synopsis
- - The study aimed to analyze the DNA sequences of plasmids with a rare β-lactamase gene in Serratia marcescens to understand how antibiotic resistance spreads in hospital settings.
- - Researchers collected 20 ceftazidime-resistant isolates over a year and performed pulsotyping and whole-genome sequencing, revealing two distinct pulsotypes with genetic variations in the bla gene's promoter region.
- - Findings included a newly characterized Tn1-bla element on plasmids and polymorphic sequences in the gene's promoter, highlighting mechanisms of antibiotic resistance transmission among hospital bacteria.