Publications by authors named "Yuichi Kouyama"

Article Synopsis
  • Researchers assessed how the shortage of carbapenem antibiotics affected treatment practices and patient outcomes in a major hospital.
  • They found that the hospital was able to effectively manage this shortage by implementing extra guidelines and requiring pre-approval for certain treatments.
  • The study suggests that antibiotic shortages could serve as a chance to enhance responsible use of antibiotics through better stewardship programs.
View Article and Find Full Text PDF

Purpose: This study examined the risk factors for, and molecular mechanisms underlying, the increase in carbapenem minimum inhibitory concentrations (MICs) in clinical isolates of Pseudomonas aeruginosa.

Methodology: Consecutive clinical isolates of P. aeruginosa were collected.

View Article and Find Full Text PDF

Background: Point prevalence surveys (PPSs) in Japanese hospitals have not yet been reported. The purpose of this pilot PPS study was to evaluate the epidemiology of health care-associated infections (HAIs) and antimicrobial use in a Japanese tertiary university hospital.

Methods: A 1-day, cross-sectional PPS was performed at a Japanese university hospital.

View Article and Find Full Text PDF

We aimed to elucidate the current epidemiological features of outpatient skin and soft tissue infection (SSTI)-associated methicillin-resistant Staphylococcus aureus (MRSA) in Japan. Altogether, we evaluated the performance of a phage-open reading frame typing (POT) kit for genotyping these MRSA strains. We collected 57 MRSA strains from all outpatients with SSTIs attending a teaching hospital in Japan.

View Article and Find Full Text PDF

This report presents a case of fulminant community-acquired Pseudomonas aeruginosa necrotizing pneumonia in a previously healthy young man, including an analysis of the virulence of the P.aeruginosa isolated from the patient. The patient was successfully treated with intensive care and antibiotic treatment.

View Article and Find Full Text PDF

Objectives: The β-barrel assembly machinery (BAM) complex plays a critical role in outer membrane protein (OMP) biogenesis. The outer membrane (OM) of Pseudomonas aeruginosa is centrally involved in mechanisms of antibiotic resistance. This study aimed to identify effects of a synthetic peptide based on conserved sequences in the putative BamA-binding region of BamD, focusing on antibiotic susceptibility and OMP characteristics in P.

View Article and Find Full Text PDF

We conducted an epidemiological study concerning carbapenem-non-susceptible clinical isolates of Acinetobacter spp. in Japan by molecular procedures including carbapenemase gene identification and amplified ribosomal DNA restriction analysis. Among 598 clinically isolated Acinetobacter spp.

View Article and Find Full Text PDF

Analysis of five CTX-M-2-producing Proteus mirabilis isolates in Japan demonstrated that bla(CTX-M-2) was located on the chromosome in four isolates and on IncT plasmids in three isolates, including two isolates that also carried the gene on the chromosome. In all four isolates with chromosomal bla(CTX-M-2), ISEcp1 was responsible for the integration of the gene into the chromosome. Three different sites in the P.

View Article and Find Full Text PDF

Taxanes, which are widely used in treatment of numerous cancer types, are well-known to induce hypersensitivity reactions (HSR), especially in the case of paclitaxel. Although the cause of the HSR is commonly thought to be a non-immunological direct effect of the diluent which is used to dissolve paclitaxel, some reports suggest the possibility of the presence of an immunological reaction to the common taxane structure. The aim of this study was to establish a method to determine the presence of anti-taxane antibodies in body fluids of patients who have previously received paclitaxel, in order to estimate the risk of the occurrence of HSR to other taxane compounds, such as docetaxel.

View Article and Find Full Text PDF

This antimicrobial resistance surveillance study was performed in 51 medical centers in Japan over an 11-year period. The susceptibilities of 4228 strains including Escherichia coli (491 strains), Klebsiella spp. (462 strains), Enterobacter spp.

View Article and Find Full Text PDF

A PHP Error was encountered

Severity: Warning

Message: fopen(/var/lib/php/sessions/ci_sessionjuhpgad9dhoeoev8l58pe5ihobrsrrpk): Failed to open stream: No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 177

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Failed to read session data: user (path: /var/lib/php/sessions)

Filename: Session/Session.php

Line Number: 137

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once