DETECTION OF PENICILLIN-RESISTANT STREPTOCOCCUS-PNEUMONIAE WITH COMMERCIALLY AVAILABLE BROTH MICRODILUTION PANELS

被引:13
作者
NOLTE, FS
METCHOCK, B
WILLIAMS, T
DIEM, L
BRESSLER, A
TENOVER, FC
机构
[1] EMORY UNIV,SCH MED,DEPT PATHOL & LAB MED,ATLANTA,GA 30322
[2] GRADY MEM HOSP,ATLANTA,GA
[3] CTR DIS CONTROL & PREVENT,ATLANTA,GA 30341
关键词
D O I
10.1128/JCM.33.7.1804-1806.1995
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
We compared penicillin MICs obtained with three different commercially available broth microdilution panels (MicroScan, Sensititre, and Pasco) with MICs obtained with reference microdilution panels for 20 well-characterized pneumococci with decreased susceptibilities to penicillin (7 resistant and 13 intermediate), All panels were supplemented with 2 to 5% lysed horse blood (LHB) prepared in-house, Additional supplements included fastidious inoculum broth (FIB) for MicroScan panels and commercially prepared LHB (Difco) for Pasco panels, The percentages of penicillin-resistant strains (MIC 2 mu g/ml) detected by the different methods follow: MicroScan-FIB, 0; MicroScan-LHB 0; Pasco in-house LHB, 71; and Sensititre-LHB, 100, The percentages of intermediate strains (MIC = 0.1 to 1.0 mu g/ml) detected by the different methods follow: MicroScan-FIB, 31; MicroScan-LHB 23; Pasco in-house LHB, 46; and Sensititre-LHB, 85, Difco LHB supplement failed to support the growth of 86% of the strains in the Pasco panels, Of the commercially available panels evaluated, only Sensititre, supplemented with LHB prepared in-house could reliably detect penicillin-resistant pneumococci.
引用
收藏
页码:1804 / 1806
页数:3
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