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Negative pressure produced by bacteria: A possible cause of negative middle ear pressure in ears with otitis media
http://hdl.handle.net/10069/36873
http://hdl.handle.net/10069/368735cabcb19-02d5-41e3-9b05-f23f5bee6ca8
名前 / ファイル | ライセンス | アクション |
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ActMed60_141.pdf (1.2 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2016-10-14 | |||||
タイトル | ||||||
タイトル | Negative pressure produced by bacteria: A possible cause of negative middle ear pressure in ears with otitis media | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Bacteria | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | negative middle ear pressure | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | otitis media | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | oxygen consumption | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
著者 |
Kitaoka, Kyoko
× Kitaoka, Kyoko× Takahashi, Haruo |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Conclusions: It is suggested that oxygen consumption by bacteria could be a cause of the negative middle ear pressure in ears with otitis media. Objective: To determine whether oxygen consumption and production of carbon dioxide by bacteria could be a cause of negative pressure in ears with otitis media. Methods: Hermetically-sealed tubes (2ml of volume) containing 1 ml of culture media with Streptococcus pneumoniae leaving 1 ml of airspace were connected to a micro-pressure sensor, and were maintained at 37 degree centigrade in a water bath. Chronological changes of air pressure in the tube were monitored for 15 hours (bacterial group), and were compared with those in the tubes containing culture media only controls). Also, partial pressures of oxygen and carbon dioxide in the culture media of those bottles were measured. Results: The pressure of the bacterial group were significantly lower than that of controls (bacterial group; -94.6±92mmH2O, control group; 4.6±11.1mmH2O, 2 way-ANOVA, P<0.001). The partial pressures of oxygen were lower (bacterial group; -86.0±22.1mmHg, control group; -34.6±7.93mmHg, 2 way-ANOVA, P<0.0001) and those of carbon dioxide were significantly higher in the bacterial group than in the control group (bacterial group; 11.8±3.8mmHg, control group; -0.23±0.41mmHg, 2 way-ANOVA, P<0.0001). |
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書誌情報 |
Acta medica Nagasakiensia 巻 60, 号 4, p. 141-144, 発行日 2016-09 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00016055 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00508430 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
出版者 | ||||||
出版者 | Nagasaki University School of Medicine | |||||
出版者別言語 | ||||||
値 | 長崎大学医学部 | |||||
sortkey | ||||||
値 | 02 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Acta medica Nagasakiensia, 60(4), pp.141-144; 2016 |