Comparison of commercial DNA preparation kits for the detection of Brucellae in tissue using quantitative real-time PCR

被引：28

作者：

Tomaso, Herbert ^{[1
,2
]}

Kattar, Mireille ^{[3
]}

Eickhoff, Meike ^{[4
]}

Wernery, Ulrich ^{[5
]}

Al Dahouk, Sascha ^{[6
]}

Straube, Eberhard ^{[7
]}

Neubauer, Heinrich ^{[1
]}

Scholz, Holger C. ^{[2
]}

机构：

[1] Friedrich Loeffler Inst, Inst Bacterial Infect & Zoonoses, D-07743 Jena, Germany

[2] Bundeswehr Inst Microbiol, Dept Bacteriol, Munich, Germany

[3] Amer Univ Beirut, Dept Pathol & Lab Med, Beirut, Lebanon

[4] Roche Mol Diagnost, Rotkreuz, Switzerland

[5] Cent Vet Res Lab, Dubai, U Arab Emirates

[6] Rhein Westfal TH Aachen, Dept Internal Med 3, Aachen, Germany

[7] Univ Jena, Inst Med Microbiol, Jena, Germany

来源：

BMC INFECTIOUS DISEASES | 2010年 / 10卷

关键词：

ASSAYS; IDENTIFICATION; SERUM;

D O I：

10.1186/1471-2334-10-100

中图分类号：

R51 [传染病];

学科分类号：

100401 ;

摘要：

Background: The detection of Brucellae in tissue specimens using PCR assays is difficult because the amount of bacteria is usually low. Therefore, optimised DNA extraction methods are critical. The aim of this study was to assess the performance of commercial kits for the extraction of Brucella DNA. Methods: Five kits were evaluated using clinical specimens: QIAamp (TM) DNA Mini Kit (QIAGEN), peqGold (TM) Tissue DNA Mini Kit (PeqLab), UltraClean (TM) Tissue and Cells DNA Isolation Kit (MoBio), DNA Isolation Kit for Cells and Tissues (Roche), and NucleoSpin (TM) Tissue (Macherey-Nagel). DNA yield was determined using a quantitative real-time PCR assay targeting IS711 that included an internal amplification control. Results: Kits of QIAGEN and Roche provided the highest amount of DNA, Macherey-Nagel and Peqlab products were intermediate whereas MoBio yielded the lowest amount of DNA. Differences were significant (p < 0.05) and of diagnostic relevance. Sample volume, elution volume, and processing time were also compared. Conclusions: We observed differences in DNA yield as high as two orders of magnitude for some samples between the best and the worst DNA extraction kits and inhibition was observed occasionally. This indicates that DNA purification may be more relevant than expected when the amount of DNA in tissue is very low.

引用

页数：5

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