year 1, Issue 1 (Spring 2007)
Iran J Med Microbiol 2007, 1(1): 61-66 |
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Ataee R, Mehrabi Tavana A, Safiri Z, Karami A, Izadi M, Hossaini M. Advatages of Rapid diagnosis of BacterialMeningitis By PCR in compare with Direct Microscopy and culture . Iran J Med Microbiol 2007; 1 (1) :61-66
URL: http://ijmm.ir/article-1-75-en.html
URL: http://ijmm.ir/article-1-75-en.html
RamezanAli Ataee1 
, Ali Mehrabi Tavana1 , Zahra Safiri2 , Ali Karami2 , Morteza Izadi3 , Mohhamad Hossaini2
, Ali Mehrabi Tavana1 , Zahra Safiri2 , Ali Karami2 , Morteza Izadi3 , Mohhamad Hossaini2
1- Department of Medical Microbiology, Faculty ofMedicine, and Molecular Biology Research Center, Baqiyatallah (a.s.) University of Medical Sciences
2- Molecular Biology Research Center, Baqiyatallah (a.s.) University of Medical Sciences
3- Department of Medical Microbiology, Faculty of Medicine, and Health Research Center, Baqiyatallah (a.s.) University of Medical Sciences
2- Molecular Biology Research Center, Baqiyatallah (a.s.) University of Medical Sciences
3- Department of Medical Microbiology, Faculty of Medicine, and Health Research Center, Baqiyatallah (a.s.) University of Medical Sciences
Abstract: (19022 Views)
Background and Objectives: Acute bacterial meningitis has remained an important cause of death and
neurological damages among survivors. Rapid diagnosis of bacterial meningitis is crucial for the early
targeting of antimicrobial therapy. The aim of this study was to develop and appply a PCR assay for rapid
diagnosis of meningitidis and to compare the results with those obtained by conventional bacteriology.
Material and methods: We assessed 150 cerebrospinal fluid (CSF) specimens from suspected patients by PCR targeting 16S rRNAgene with specefic primers for Neisseria meningitidis, Sterptococcus pneumonia and Heamophilus influenza. All speciemns were also examined by conventional bacteriology.
Results:The rapidity of diagnosis increased when bacteriological methods were combined with PCR. Of 150 speciemens tested, 10 were positive for Neisseria meningitidis in PCR. Direct microscopy and bacterial culture found 5 and 8 cases infected with this organism respectively.
Conclusion: PCR was more sensitive than direct microscopy and culture for detection of Neisseria meningitidis. However, direct microscopy may provide evidences for the quality of specimens and presence of other organisms in the samples. Wet- mount direct microscopy showed morphology and arrangements of the observed organisms that may be helpful in presumptive identification of certain bacteria such as gram negative bacilli and cocci.. Moreover, the observed organisms may be useful in correct selection of culture media in the laboratory and prescription of appropriate therapy by physicians in a quickest time.
Material and methods: We assessed 150 cerebrospinal fluid (CSF) specimens from suspected patients by PCR targeting 16S rRNAgene with specefic primers for Neisseria meningitidis, Sterptococcus pneumonia and Heamophilus influenza. All speciemns were also examined by conventional bacteriology.
Results:The rapidity of diagnosis increased when bacteriological methods were combined with PCR. Of 150 speciemens tested, 10 were positive for Neisseria meningitidis in PCR. Direct microscopy and bacterial culture found 5 and 8 cases infected with this organism respectively.
Conclusion: PCR was more sensitive than direct microscopy and culture for detection of Neisseria meningitidis. However, direct microscopy may provide evidences for the quality of specimens and presence of other organisms in the samples. Wet- mount direct microscopy showed morphology and arrangements of the observed organisms that may be helpful in presumptive identification of certain bacteria such as gram negative bacilli and cocci.. Moreover, the observed organisms may be useful in correct selection of culture media in the laboratory and prescription of appropriate therapy by physicians in a quickest time.
Type of Study: Original Research Article |
Subject:
Molecular Microbiology
Received: 2013/11/10 | Accepted: 2013/11/10 | ePublished: 2013/11/10
Received: 2013/11/10 | Accepted: 2013/11/10 | ePublished: 2013/11/10
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