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:: Volume 11, Number 3 (May 2017) ::
Qom Univ Med Sci J 2017, 11(3): 11-21 Back to browse issues page
Comparison of Two Methods of Direct PCR and PCR with DNA extracted by Kit for Detection of OPrL, ExoA, and algD genes in clinical isolates of Pseudomonas aeruginosa
Hamed Tahmasebi *1, Javad Adabi2, Shahram Shahraki Zahedani3, Behroz Zeyni4
1- MSc of microbiology 1Department of Microbiology, Faculty of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran , h.tahmasebi87@yahoo.com
2- Associate professor 1Department of Microbiology, Faculty of Medicine, Zahedan University of Medical Sciences, Zahedan, Iran
3- MSc Student of microbiology 2Infectious Diseases & Tropical Medicine Research Center, Zahedan University of Medical Sciences, Zahedan, Iran.
4- Department of Microbiology, Faculty of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran.
Abstract:   (564 Views)

Background and Objectives: Pseudomonas aeruginosa is one of the most common causes of nosocomial infections. Most laboratories usually use culture method and various biochemical tests for identification of P. aeruginosa, which are time-consuming and sometimes lead to false positive and negative results. The aim of this study was to compare two methods of PCR with DNA extracted by kit and PCR with direct colony for detection of P. aeruginosa isolates.

Methods: In this descriptive-analytical study, out of 395 different clinical isolates, 85 isolates were identified using basic biochemical tests and culture on P. aeruginosa specific media. Then, they were assessed by OPrL, ExoA, algD genes using two methods of direct PCR by using DNA extraction kit and direct PCR and PCR with DNA extracted by kit.

Results: Out of 85 P. aeruginosa isolates detected by phenotypic screening, 81 isolates had OPrL, ExoA, algD genes using PCR with DNA extracted by kit with (amlicon size, 504, 396, and 526 bp) and 80 isolates had the mentioned genes using direct PCR.

Conclusion: This study showed that, acceptable diagnostic results can be achieved in the identification of P. aeruginosa without using extraction kits three stable gens of P. aeruginosa detect by using two different molecular methods. The results showed that, without using extraction kit can be acceptable diagnostic obtained of Pseudomonas aeruginosa. On the other hand, in the obtained results, phenotypic P. aeruginosa detection methods’ error can be observed.

Keywords: Pseudomonas aeruginosa, PCR, ExoA gene, DNA
Full-Text [PDF 685 kb]   (378 Downloads)    
Type of Study: Original Article | Subject: میکروب شناسی
Received: 2016/04/11 | Accepted: 2016/05/24 | Published: 2017/05/20
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Tahmasebi H, Adabi J, Shahraki Zahedani S, Zeyni B. Comparison of Two Methods of Direct PCR and PCR with DNA extracted by Kit for Detection of OPrL, ExoA, and algD genes in clinical isolates of Pseudomonas aeruginosa. Qom Univ Med Sci J . 2017; 11 (3) :11-21
URL: http://journal.muq.ac.ir/article-1-699-en.html
Volume 11, Number 3 (May 2017) Back to browse issues page
مجله دانشگاه علوم پزشکی قم Qom University of Medical Sciences Journal
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