A universal primer multiplex PCR method for typing of toxinogenic Pseudomonas aeruginosa.
Appl Microbiol Biotechnol
; 95(6): 1579-87, 2012 Sep.
Article
en En
| MEDLINE
| ID: mdl-22923133
ABSTRACT
Pseudomonas aeruginosa is a well-known opportunistic pathogen that can cause acute nosocomial necrotizing pneumonia and genetic disorder cystic fibrosis of lung patients. Pathogenic interactions between P. aeruginosa and hosts are often guided by the secreted virulence determinants that interact with specific host targets. Exotoxin A, pyocyanin, elastase, and type III secretion system are the most significant virulence determinants and cause great concern. However, P. aeruginosa in various environments has high genotypic diversity, leading to deficiency of exotoxin genes for some P. aeruginosa strains. In current study, a universal primer-multiplex PCR method (UP-MPCR) was employed for the detection of five significant enterotoxin genes (toxA, phzM, lasB, ExoU, and ExoS) and one internal control gene ecfX in P. aeruginosa. Owing to the application of universal primer (UP), different targeted products have identical amplified efficiency and the sensitivity of multiplex PCR is improved. In addition, the complexity of multiplex PCR system is reduced and the compatibility of primers in a reaction is greatly increased. This UP-MPCR method can detect the presence of five P. aeruginosa enterotoxin genes in a single assay more rapidly and sensitively than conventional methods. In 214 drinking water and environmental isolates, the ExoU, ExoS, phzM, toxA, and lasB genes were detected in 20 (9 %), 180 (84 %), 179 (84 %), 196 (92 %), and 171 (80 %) isolates, respectively.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Pseudomonas aeruginosa
/
Proteínas Bacterianas
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Agua Potable
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Técnicas de Tipificación Bacteriana
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Cartilla de ADN
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Microbiología Ambiental
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Exotoxinas
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Reacción en Cadena de la Polimerasa Multiplex
Tipo de estudio:
Evaluation_studies
Idioma:
En
Revista:
Appl Microbiol Biotechnol
Año:
2012
Tipo del documento:
Article
País de afiliación:
China
Pais de publicación:
ALEMANHA
/
ALEMANIA
/
DE
/
DEUSTCHLAND
/
GERMANY