1391/9/21، جلد ۲۲، شماره ۴، صفحات -

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عنوان انگلیسی Screening of Pneumococcal Pneumonia by Amplification of Pneumolysin Gene In Children Visiting Hospitals in Lahore, Pakistan
چکیده انگلیسی مقاله Objective: Streptococcus pneumoniae is a common worldwide potential pathogen causing pneumonia among children and the detection of pneumococcal infections by conventional culturing techniques is cumbersome. The present study describes a comparative analysis of sensitive nested-PCR and bacterial culture in pediatric patients with clinical and radiological indication of S. pneumoniae infection. Methods: PCR was performed using outer primers to amplify a 348-bp region and inner primers a 208-bp region of the pneumolysin gene. For pneumolysin PCR assay, DNA from peripheral blood and middle ear fluid (MEF) samples was extracted by salting out method . The sensitivity of the assay was evaluated with about 0.06 pg of purified S. pneumoniae genomic DNA. Findings : Among 90 MEF culture negative samples from acute otitis media pediatric patients, 8.8 % pneumolysin-PCR positivity was detected, demonstrating the sensitivity and reliability of PCR for rapid pneumonia evaluation. Binomial test of proportionality performed on (SPSS 17) gives P< 0.05 indicating that PCR technique is statistically significant and sensitive in the diagnosis of S. pneumoniae infection. Conclusion: The research work evaluated the effectiveness and efficacy of nested-PCR for detecting S. pneumoniae in pediatric patients with clinical and radiological confirmation of bacterial infection. This simplified method permitted quick selection of the patients and played a significant role in preliminary management of pneumococcal infections. Key Words: Streptococcus Pneumoniae; PCR; MEF Culture
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نویسندگان مقاله 11296---11297---11298---11299---11300---

نشانی اینترنتی http://ijp.tums.ac.ir/index.php/ijp/article/viewArticle/1696
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