نتایج جستجو برای: time qpcr

تعداد نتایج: 1899469  

Journal: :Food microbiology 2011
Florence Postollec Hélène Falentin Sonia Pavan Jérôme Combrisson Danièle Sohier

Molecular methods are being increasingly applied to detect, quantify and study microbial populations in food or during food processes. Among these methods, PCR-based techniques have been the subject of considerable focus and ISO guidelines have been established for the detection of food-borne pathogens. More particularly, real-time quantitative PCR (qPCR) is considered as a method of choice for...

Journal: :Journal of Bioinformatics and Computational Biology 2011

Journal: :Journal of visualized experiments : JoVE 2010
Christy Ogrean Ben Jackson James Covino

The Solaris qPCR Gene Expression Assay is a novel type of primer/probe set, designed to simplify the qPCR process while maintaining the sensitivity and accuracy of the assay. These primer/probe sets are pre-designed to >98% of the human and mouse genomes and feature significant improvements from previously available technologies. These improvements were made possible by virtue of a novel design...

2012
Lynn M. Herrmann-Hoesing Stephen N. White Liam E. Broughton-Neiswanger Wendell C. Johnson Susan M. Noh David A. Schneider Hong Li Naomi S. Taus James Reynolds Thomas Truscott Rohana P. Dassanayake Donald P. Knowles

A new method of experimental infection of ovine progressive pneumonia virus (OPPV), aerosol nebulization (Nb), was compared to intravenous (IV) and oral (PO) methods of experimental infection. Seven month old lambs were given 3.5 × 10 TCID50 of Dubois OPPV LMH19 isolate using IV, PO, or Nb methods and were monitored for infection using cELISA and OPPV quantitative (q) PCR for 35 weeks. Four out...

2017
Zhongquan Lv Mingxin Zhang Hui Zhang Xinxin Lu

This study aimed to assess the value of real-time quantitative polymerase chain reaction (RT-qPCR) for the detection of Mycobacterium tuberculosis (MTB). Samples from 192 patients with suspected MTB were examined by RT-qPCR and an improved Löwenstein-Jensen (L-J) culture method. To evaluate the diagnostic usefulness of RT-qPCR in detecting MTB, a receiver operating characteristic (ROC) curve fo...

2018
Annika Saukkoriipi Arto A. Palmu Thierry Pascal Vincent Verlant William P. Hausdorff Jukka Jokinen

Real-time quantitative PCR (qPCR) assay of sputum or nasopharyngeal specimens has shown promising results in the detection of pneumococcal community-acquired pneumonia (PncCAP). We applied qPCR for the autolysin gene (lytA) and compared sputum and nasopharyngeal swab (NPS) pneumococcal loads in elderly patients with community-acquired pneumonia (CAP), and specifically in patients with PncCAP, t...

G. Nematzadeh H. Rahimian M.A. Tajick SF. Miri

In this study, after identification of genes involved in biosynthesis of penicillin, we evaluated the expression of pcbAB and pcbC genes in P.  Chrysogenum.  A quantitative PCR (qPCR) approach was used to determine how these genes were expressed in different time courses. In addition, the produced penicillin content was measured using HPLC. qPCR analysis of mRNAs extracted from P. chrysogenum i...

Journal: :Journal of clinical microbiology 2008
Miki Kasai Susan M Harrington Andrea Francesconi Vidmantas Petraitis Ruta Petraitiene Mara G Beveridge Tena Knudsen Jeffery Milanovich Margaret P Cotton Johanna Hughes Robert L Schaufele Tin Sein John Bacher Patrick R Murray Dimitrios P Kontoyiannis Thomas J Walsh

We developed two real-time quantitative PCR (qPCR) assays, targeting the 28S rRNA gene, for the diagnosis of zygomycosis caused by the most common, clinically significant Zygomycetes. The amplicons of the first qPCR assay (qPCR-1) from Rhizopus, Mucor, and Rhizomucor species were distinguished through melt curve analysis. The second qPCR assay (qPCR-2) detected Cunninghamella species using a di...

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