Review Article Invasiveness of Pseudomonas aeruginosa and Its Role in Diversity of Pseudomonal Infectious Diseases

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概要

• 論文の詳細を見る

• Pseudomonas aeruginosa causes both invasive (bacteremic) and chronic non-invasive infections in several organs, resulting in the diversity of infectious diseases. When Madin- Darby canine kidney (MDCK) monolayers were infected with clinical isolates of P. aeruginosa, significantly (P < 0.001) more blood (30 of 32, 93.7%) than respiratory (25 of 45, 54.4%) isolates penetrated the epithelial cell monolayers by 3 h. Only eight (4 blood and 4 respiratory) isolates were cytotoxic and possessed exo U, and passed through the monolayer following epithelial cell death associated with release of lactose dehydrogenase and a marked drop in transepithelial electrical resistance. Thus, invasiveness was usually independent of cytotoxicity. The capacity to penetrate epithelial cells appears to be a critical determinant of invasiveness in susceptible hosts and may be controlled by unknown unique genes. In addition, such invasion determinant(s) are thought to be predominantly exported by P. aeruginosa via MexAB-OprM, which is one of multi-drug resistant (MDR) efflux systems. Hence, MDR efflux systems in P. aeruginosa might be critical for the efflux of virulence factors, in addition to their established role of exporting harmful substances such as antibiotics or detergents.

• 長崎大学の論文

著者

• Hirakata Yoichi

  Department Of Infection Control And Laboratory Diagnostics Internal Medicine Tohoku University Gradu

• Hirakata Yoichi

  Department Of Laboratory Medicine Nagasaki University School Of Medicine

• Hirakata Yoichi

  Department Of Clinical Laboratory Medicine Nagasaki University School Of Medicine

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