Drug sensitivity and expression of beta-lactamase in enterococci isolated at Okayama University Hospital

Yasutomo Nasu, Toyohiko Watanabe, K. Monden, K. Sakuramoto, A. Ono, M. Tsugawa, H. Kumon, H. Ohmori, T. Yasui

Research output: Contribution to journalArticle

Abstract

The following results were obtained from a study of Enterococci isolated at the Okayama University Hospital from 1990 to 1994. 1) The isolation frequency of Enterococci was about 6% for each year. 2) The percentage of Enterococcus faecalis (E. faecalis) among Enterococci decreased each year, but the percentage of Enterococcus faecium (E. faecium), and Enterococcus avium (E. avium) increased each year. 3) Results of drug sensitivity tests revealed that the incidence of ofloxacin (OFLX) resistant E. faecalis and E. avium increased each year. Also, the resistance of E. faecalis to ampicillin (ABPC), the primary medication choice for treating E. faecalis, increased each year. 4) A few vancomycin (VCM) non-sensitive Enterococci were isolated. These bacteria showed low-sensitivity toward ABPC, imipenem (IPM), gentamicin (GM), and OFLX, and the extent of multiple drug resistance increased each year. 5) One hundred strains of Enterococci were selected to examine the expression of beta-lactamase using the broth method and the iodine-starch method. However, beta-lactamase producing strains were not detected.

Original languageEnglish
Pages (from-to)919-923
Number of pages5
JournalKansenshogaku zasshi. The Journal of the Japanese Association for Infectious Diseases
Volume69
Issue number8
Publication statusPublished - Aug 1995

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Enterococcus
beta-Lactamases
Enterococcus faecalis
Pharmaceutical Preparations
Ofloxacin
Enterococcus faecium
Imipenem
Multiple Drug Resistance
Vancomycin
Ampicillin
Gentamicins
Iodine
Starch
Bacteria
Incidence

ASJC Scopus subject areas

  • Medicine(all)

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Drug sensitivity and expression of beta-lactamase in enterococci isolated at Okayama University Hospital. / Nasu, Yasutomo; Watanabe, Toyohiko; Monden, K.; Sakuramoto, K.; Ono, A.; Tsugawa, M.; Kumon, H.; Ohmori, H.; Yasui, T.

In: Kansenshogaku zasshi. The Journal of the Japanese Association for Infectious Diseases, Vol. 69, No. 8, 08.1995, p. 919-923.

Research output: Contribution to journalArticle

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