Abstract:
AIM:Introduction of a protocol for broad-range diagnosis of bacterial infections, which remain negative in culture. METHODS AND RESULTS:The new TaqMan real-time PCR assay amplifies part of the 16S rRNA gene. Species are identified by subsequent sequencing and phylogenetic blast analysis. The analytical sensitivity showed to be 50 fg DNA per PCR. The lowest detectable bacterial cell concentration in blood was 1000 CFU per 200 mul EDTA-blood. The utility in clinical routine diagnosis was evaluated by testing 136 clinical specimens. Bacterial pathogens were detected in 33 samples (24.3%) either by culture or molecular diagnosis. In 10 culture negative cases, pathogens such as Mycoplasma timone/orale, Ureaplasma parvum/urealyticum, Treponema pallidum, different streptococci and staphylococci were identified by molecular diagnosis only. CONCLUSIONS:The introduced broad-range real-time PCR protocol showed to be useful in the clinical routine in cases where bacterial infection was highly anticipated but culture remained negative. However, the obtained data have to be always interpreted with caution and in conjunction with the clinical data, crossing-point values and with the Blast result of both the sample and the controls. SIGNIFICANCE AND IMPACT OF THE STUDY:This work introduces a new and well-evaluated broad-range real-time PCR protocol for diagnosis of bacterial infections.
journal_name
J Appl Microbioljournal_title
Journal of applied microbiologyauthors
Schabereiter-Gurtner C,Nehr M,Apfalter P,Makristathis A,Rotter ML,Hirschl AMdoi
10.1111/j.1365-2672.2007.03648.xsubject
Has Abstractpub_date
2008-04-01 00:00:00pages
1228-37issue
4eissn
1364-5072issn
1365-2672pii
JAM3648journal_volume
104pub_type
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journal_title:Journal of applied microbiology
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doi:10.1046/j.1365-2672.1998.00390.x
更新日期:1998-04-01 00:00:00
abstract:AIMS:The aim of this study was to develop and optimize a novel method that combines ethidium bromide monoazide (EMA) staining with real-time PCR for the detection of viable Escherichia coli O157:H7 in ground beef. EMA can penetrate dead cells and bind to intracellular DNA, preventing its amplification via PCR. METHODS...
journal_title:Journal of applied microbiology
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journal_title:Journal of applied microbiology
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journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1046/j.1365-2672.1999.00669.x
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journal_title:Journal of applied microbiology
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doi:10.1111/j.1365-2672.2007.03617.x
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journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1111/j.1365-2672.1998.tb05290.x
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journal_title:Journal of applied microbiology
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journal_title:Journal of applied microbiology
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journal_title:Journal of applied microbiology
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journal_title:Journal of applied microbiology
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abstract::An extracellular alpha-amylase gene from the hyperthermophilic archaeon Pyrococcus woesei has been cloned and sequenced. The 1.4-kb protein-coding sequence is identical to that of the corresponding alpha-amylase gene of the closely related species P. furiosus. By using a shuttle cloning vector for halophilic bacteria,...
journal_title:Journal of applied microbiology
pub_type: 杂志文章
doi:10.1046/j.1365-2672.2000.00988.x
更新日期:2000-03-01 00:00:00
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