Lung Re-Expansion Following One-Lung Ventilation Induces Neutrophil Cytoskeletal Rearrangements in Rats
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概要
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Purpose: To investigate the morphological and functional behavior of neutrophils during and after one-lung ventilation (OLV).Methods: We utilized an OLV rat model system and performed 3 hours of OLV followed by either re-expansion (RE) and 30 minutes of two-lung ventilation (TLV) (RE group), only two-lung ventilation (TLV group), or only OLV (OLV group). Cytoskeletal rearrangements of circulating neutrophils were assessed by determining the localization of filamentous actin (F-actin). In addition, the number of sequestered neutrophils in the lung capillary and the cytokine-induced neutrophil chemoattractant 1 (CINC-1) levels in the plasma were determined.Results: The F-actin rimmed neutrophils in the RE group increased after RE, but did not increase in the other groups. In the RE group, the sequestered neutrophils in the ventilated lung were significantly more numerous, and the plasma CINC-1 levels were significantly higher than in the other groups.Conclusions: Lung RE following OLV induces cytoskeletal rearrangements in circulating neutrophils and would thereby promote their sequestration in the lung capillaries. The plasma CINC-1 elevation after RE can be involved in neutrophil recruitment.
著者
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Hamanaka Kazutoshi
Department Of Surgery Shinshu University School Of Medicine
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Eguchi Takashi
Department Of Internal Medicine Keio University School Of Medicine
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Saito Gaku
Department Of Physics And Research Center For The Early Universe The University Of Tokyo
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Kondo Ryoichi
Department Of Surgery Shinshu University School Of Medicine
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Shiina Takayuki
Department Of Surgery Shinshu University School Of Medicine
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Yoshida Kazuo
Department Of Biological Science Faculty Of Science Hiroshima University
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Koizumi Tomonobu
Comprehensive Cancer Center, Shinshu University School of Medicine, Japan
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Eguchi Takashi
Department of Thoracic Surgery, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
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Hamanaka Kazutoshi
Department of Thoracic Surgery, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
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Saito Gaku
Department of Thoracic Surgery, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
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