The use of multiplex real-time PCR improves the detection of the bacterial etiology of community acquired pneumonia
Community-acquired pneumonia (CAP) is still a major cause of morbidity and mortality especially to children and compromised hosts, such as the old and those with underlying chronic diseases. Knowledge of pathogens causing CAP constitutes the basis for selection of antimicrobial treatment. Previou...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Malaysian Society of Parasitology and Tropical Medicine
2011
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| Online Access: | http://irep.iium.edu.my/11116/1/531_-_544_Al-Marzooq_F_%285%29.pdf |
| _version_ | 1825645222243074048 |
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| author | Mustafa Mahmoud, Mohammed Imad Al-Deen Al-Marzooq, Farah Ibrahim How, Soon Hin |
| author_facet | Mustafa Mahmoud, Mohammed Imad Al-Deen Al-Marzooq, Farah Ibrahim How, Soon Hin |
| author_sort | Mustafa Mahmoud, Mohammed Imad Al-Deen |
| collection | IIUM |
| description | Community-acquired pneumonia (CAP) is still a major cause of morbidity and
mortality especially to children and compromised hosts, such as the old and those with
underlying chronic diseases. Knowledge of pathogens causing CAP constitutes the basis for
selection of antimicrobial treatment. Previous data have shown that etiological agents can
be identified in only up to 50% of patients, but this figure can be improved by using polymerase
chain reaction (PCR). This study was designed to evaluate multiplex real-time PCR as a
method for rapid differential detection of five bacterial causes of CAP (Streptococcus
pneumoniae, Burkholderia pseudomallei and atypical bacterial pathogens namely Mycoplasma
pneumoniae, Chlamydophila pneumoniae and Legionella pneumophila) in CAP patients
attending Hospital Tengku Ampuan Afzan (HTAA)/ Kuantan, Pahang, Malaysia. Two previously
developed multiplex real-time PCR assays, duplex for the differential detection of S.
pneumoniae and B. pseudomallei and triplex for the atypical bacterial pathogens, were used
to detect a bacterial cause of CAP in blood and respiratory samples. Thus, 46 blood and 45
respiratory samples collected from 46 adult CAP patients admitted to HTAA were analysed by
multiplex real-time PCR assays and conventional methods. The microbial etiology of CAP
could be established for 39.1% (18/46) of CAP patients by conventional methods and this was
increased to 65.2% (30/46) with the additional use of real-time PCR. The most frequently
detected pathogens were S. pneumoniae (21.7% - all by PCR alone), Klebsiella pneumoniae
(17.3%), B. pseudomallei (13% - 83% of them positive by PCR alone and 17% by both culture
and PCR), Pseudomonas aeruginosa (6.5%), M. pneumoniae (6.5% - all by serology), C.
pneumoniae (4.3% - all positive by both PCR and serology), L. pneumophila (2.1% - all by PCR
alone), Escherichia coli (4.3%). Haemophilus infuenzae, Acinetobacter lwoffii and
Acinetobacter baumannii were detected by conventional methods (2.1% for each). |
| first_indexed | 2024-03-05T22:44:28Z |
| format | Article |
| id | oai:generic.eprints.org:11116 |
| institution | International Islamic University Malaysia |
| language | English |
| last_indexed | 2024-03-05T22:44:28Z |
| publishDate | 2011 |
| publisher | Malaysian Society of Parasitology and Tropical Medicine |
| record_format | dspace |
| spelling | oai:generic.eprints.org:111162013-04-11T03:03:29Z http://irep.iium.edu.my/11116/ The use of multiplex real-time PCR improves the detection of the bacterial etiology of community acquired pneumonia Mustafa Mahmoud, Mohammed Imad Al-Deen Al-Marzooq, Farah Ibrahim How, Soon Hin QR Microbiology RC Internal medicine Community-acquired pneumonia (CAP) is still a major cause of morbidity and mortality especially to children and compromised hosts, such as the old and those with underlying chronic diseases. Knowledge of pathogens causing CAP constitutes the basis for selection of antimicrobial treatment. Previous data have shown that etiological agents can be identified in only up to 50% of patients, but this figure can be improved by using polymerase chain reaction (PCR). This study was designed to evaluate multiplex real-time PCR as a method for rapid differential detection of five bacterial causes of CAP (Streptococcus pneumoniae, Burkholderia pseudomallei and atypical bacterial pathogens namely Mycoplasma pneumoniae, Chlamydophila pneumoniae and Legionella pneumophila) in CAP patients attending Hospital Tengku Ampuan Afzan (HTAA)/ Kuantan, Pahang, Malaysia. Two previously developed multiplex real-time PCR assays, duplex for the differential detection of S. pneumoniae and B. pseudomallei and triplex for the atypical bacterial pathogens, were used to detect a bacterial cause of CAP in blood and respiratory samples. Thus, 46 blood and 45 respiratory samples collected from 46 adult CAP patients admitted to HTAA were analysed by multiplex real-time PCR assays and conventional methods. The microbial etiology of CAP could be established for 39.1% (18/46) of CAP patients by conventional methods and this was increased to 65.2% (30/46) with the additional use of real-time PCR. The most frequently detected pathogens were S. pneumoniae (21.7% - all by PCR alone), Klebsiella pneumoniae (17.3%), B. pseudomallei (13% - 83% of them positive by PCR alone and 17% by both culture and PCR), Pseudomonas aeruginosa (6.5%), M. pneumoniae (6.5% - all by serology), C. pneumoniae (4.3% - all positive by both PCR and serology), L. pneumophila (2.1% - all by PCR alone), Escherichia coli (4.3%). Haemophilus infuenzae, Acinetobacter lwoffii and Acinetobacter baumannii were detected by conventional methods (2.1% for each). Malaysian Society of Parasitology and Tropical Medicine 2011-12 Article PeerReviewed application/pdf en http://irep.iium.edu.my/11116/1/531_-_544_Al-Marzooq_F_%285%29.pdf Mustafa Mahmoud, Mohammed Imad Al-Deen and Al-Marzooq, Farah Ibrahim and How, Soon Hin (2011) The use of multiplex real-time PCR improves the detection of the bacterial etiology of community acquired pneumonia. Tropical Biomedicine, 28 (3). pp. 531-544. ISSN 0127-5720, OCLC: 12391449 http://www.msptm.org/journal.html |
| spellingShingle | QR Microbiology RC Internal medicine Mustafa Mahmoud, Mohammed Imad Al-Deen Al-Marzooq, Farah Ibrahim How, Soon Hin The use of multiplex real-time PCR improves the detection of the bacterial etiology of community acquired pneumonia |
| title | The use of multiplex real-time PCR improves the detection
of the bacterial etiology of community acquired pneumonia |
| title_full | The use of multiplex real-time PCR improves the detection
of the bacterial etiology of community acquired pneumonia |
| title_fullStr | The use of multiplex real-time PCR improves the detection
of the bacterial etiology of community acquired pneumonia |
| title_full_unstemmed | The use of multiplex real-time PCR improves the detection
of the bacterial etiology of community acquired pneumonia |
| title_short | The use of multiplex real-time PCR improves the detection
of the bacterial etiology of community acquired pneumonia |
| title_sort | use of multiplex real time pcr improves the detection of the bacterial etiology of community acquired pneumonia |
| topic | QR Microbiology RC Internal medicine |
| url | http://irep.iium.edu.my/11116/1/531_-_544_Al-Marzooq_F_%285%29.pdf |
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