Molecular diagnosis of car scratch disease: A two-step approach

被引:66
作者
Avidor, B [1 ]
Kletter, Y [1 ]
Abulafia, S [1 ]
Golan, Y [1 ]
Ephros, M [1 ]
Giladi, M [1 ]
机构
[1] CARMEL HOSP,DEPT PEDIAT,HAIFA,ISRAEL
关键词
D O I
10.1128/JCM.35.8.1924-1930.1997
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
Amplification of Bartonella henselae DNA has been proposed as a diagnostic test for cat scratch disease (CSD), The sensitivities of the following three PCR assays were compared, PCR/rRNA with universal primers amplifies part of the 16S rRNA gene, followed by; hybridization, with a specific B, henselae probe; PCR/CS anti PCR/HSP amplify portions of the gltA and the htrA genes, respectively, each followed itp restriction fragment length polymorphism analysis, The threshold of detection of B. henselae DNA in pus was 10(-4), 10(-3), and 10(-2) ng for PCR/rRNA, PCR/CS, and PCR/HSP, respectively. np these three assays, B. henselae DNA was detected in 100, 94, and 69% of 32 pus and lymph node specimens from GSD patients, respectively, The similar sensitivities of the PCR/rRNA and the PCR/CS assays for detecting B. henselae DNA in clinical specimens are in contrast to the 10-fold difference in sensitivities in favor of PCR/rRNA demonstrated with purified B. henselae DNA in sterile pus, suggesting that in the majority of cases, the bacterial load in clinical specimens is large enough to be identified by Che PCR/CS assay. A two-step approach is suggested to achieve maximal sensitivity for detecting B, henselae in clinical specimens: initial testing by PCR/CS (which does not require hybridization), followed by; PCR/rRNA with PCR/CS-negative specimens when CSD is strongly suspected.
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页码:1924 / 1930
页数:7
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