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Nagaoka K, Yamashita Y, Kimura H, Kimura H, Suzuki M, Fukumoto T, Hayasaka K, Yoshida M, Hara T, Maki H, Ohkawa T, Konno S. Anti-PcrV titers in non-cystic fibrosis patients with Pseudomonas aeruginosa respiratory tract infection. Int J Infect Dis 2019; 87:54-59. [PMID: 31419482 DOI: 10.1016/j.ijid.2019.08.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/07/2019] [Accepted: 08/08/2019] [Indexed: 10/26/2022] Open
Abstract
OBJECTIVE The epidemiology and role of the anti-PcrV titer in non-cystic fibrosis patients with Pseudomonas aeruginosa airway tract infections is not fully understood. This study was performed to compare the anti-PcrV titers of patients with and without P. aeruginosa respiratory tract infections. METHODS This prospective cohort study was conducted at Hokkaido University Hospital in Japan. Participants had blood and sputum specimens collected on admission. They were divided into two groups based on their sputum culture results. Those with a P. aeruginosa infection were assigned to the P. aeruginosa (PA) group and those without a P. aeruginosa infection were assigned to the non-PA group. Serum anti-PcrV titers were measured using a validated ELISA. RESULTS Of the 44 participants, 15 were assigned to the PA group and 29 were assigned to the non-PA group. In the PA group, 10/15 participants (66.7%) had an anti-PcrV titer >1000ng/ml compared to 3/29 participants (10.3%) in the non-PA group (p<0.001). In the PA group, two of the five participants with an anti-PcrV titer <1000 ng/ml died of recurrent P. aeruginosa pneumonia; the other three participants did not develop pneumonia. CONCLUSION The anti-PcrV titers in participants with P. aeruginosa infection varied considerably. Patients with low anti-PcrV titers and refractory P. aeruginosa infections need to be monitored closely.
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Affiliation(s)
- Kentaro Nagaoka
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Hokkaido, Japan.
| | - Yu Yamashita
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Hirokazu Kimura
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Hiroki Kimura
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Masaru Suzuki
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
| | - Tatsuya Fukumoto
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Hokkaido, Japan
| | - Kasumi Hayasaka
- Division of Laboratory and Transfusion Medicine, Hokkaido University Hospital, Hokkaido, Japan
| | - Mari Yoshida
- Translational Research Unit, Biomarker R&D Department, Shionogi & Co., Ltd., Osaka, Japan
| | - Takafumi Hara
- Drug Discovery & Disease Research Laboratory, Shionogi & Co., Ltd., Osaka, Japan
| | - Hideki Maki
- Drug Discovery & Disease Research Laboratory, Shionogi & Co., Ltd., Osaka, Japan
| | - Tomoyuki Ohkawa
- Translational Research Unit, Biomarker R&D Department, Shionogi & Co., Ltd., Osaka, Japan
| | - Satoshi Konno
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Hokkaido, Japan
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