کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10889869 | 1081547 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evaluation of DNA extraction methods from mouse stomachs for the quantification of H. pylori by real-time PCR
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
بیوتکنولوژی یا زیستفناوری
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Real-time PCR methods have recently been developed for the quantification of Helicobacter pylori from infected mouse stomachs. However, the extent to which results is affected by the efficiency of different methods of DNA extraction and the degree of inhibition of the subsequent PCR have largely been ignored. In this study, mouse stomachs were processed using two homogenisation methods: complete disruption using a blender and homogenisation by vortexing with glass beads. Each procedure was followed by DNA purification by three different protocols-two commercially available kits-Qiagen DNA Mini Tissue kit and Qiagen Stool Kit and a phenol-chloroform extraction method. PCR inhibition was assessed by screening for mouse DNA and for H. pylori DNA after spiking stomach extracts with H. pylori 16S rDNA. PCR inhibition was found to be lower in DNA samples prepared by vortexing and processed by column kits. Validation of procedures was performed by quantification of H. pylori DNA and mouse DNA in infected mouse stomachs. Homogenisation with glass beads followed by the Qiagen Tissue kit was found to be the most suitable protocol combining high extraction and detection efficiency of 16S rDNA in the presence of a mouse DNA background.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Microbiological Methods - Volume 62, Issue 1, July 2005, Pages 71-81
Journal: Journal of Microbiological Methods - Volume 62, Issue 1, July 2005, Pages 71-81
نویسندگان
Yvonne Roussel, Mark Wilks, Andrew Harris, Charles Mein, Soad Tabaqchali,