Negative pressure produced by bacteria: A possible cause of negative middle ear pressure in ears with otitis media

• Material Type: 博士論文
• ISSN: 0001-6055
• Title: Negative pressure produced by bacteria: A possible cause of negative middle ear pressure in ears with otitis media
• Volume: 60 4
• Author/Editor: 北岡, 杏子
• Author Heading: 北岡, 杏子
• Publication, Distribution, etc.: 長崎大学医学部
• Publication Date: 2017-02-01
• Publication Date (W3CDTF): 2017-02-01
• Alternative Title: 細菌による陰圧形成：中耳炎における中耳陰圧形成の原因の可能性について
• Periodical title: Acta Medica Nagasakiensia
• Degree grantor/type: Nagasaki University (長崎大学)
• Date Granted: 2017-02-01
• Date Granted (W3CDTF): 2017-02-01
• Dissertation Number: 乙医歯薬第46号
• Degree Type: 博士(医学)
• Conferring No. (Dissertation): 乙医歯薬第46号
• Text Language Code: eng
• Subject Heading: Bacteria; negative middle ear pressure; otitis media; oxygen consumption
• Target Audience: 一般
• Note (General): Conclusions: It is suggested that oxygen consumption by bacteria could be a cause of the negative middle ear pressure in earswith 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 1ml 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 ofthose 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).; 長崎大学学位論文 学位記番号:博(医歯薬)乙第46号 学位授与年月日:平成29年2月1日; Author: Kyoko Kitaoka, Haruo Takahashi; Citation: Acta Medica Nagasakiensia, 60(4), pp.141-144; 2016; Nagasaki University (長崎大学), 博士(医学) (2017-02-01)
• Persistent ID (NDL): info:ndljp/pid/10310785; https://dl.ndl.go.jp/pid/10310785
• Collection: 障害者向け資料
• Collection (Materials For Handicapped People:1): テキストデータ
• Collection (particular): 国立国会図書館デジタルコレクション > デジタル化資料 > 博士論文; https://dl.ndl.go.jp/collections/A00014
• Acquisition Basis: 博士論文（自動収集）
• Date Accepted (W3CDTF): 2017-03-02T13:20:07+09:00
• Date Created (W3CDTF): 2020-12-21
• Format (IMT): PDF
• Access Restrictions: 国立国会図書館内限定公開
• Service for the Digitized Contents Transmission Service: 図書館・個人送信対象外
• Availability of remote photoduplication service: 可
• Periodical Title (URI): http://hdl.handle.net/10069/37044; https://nagasaki-u.repo.nii.ac.jp/records/3859
• Data Provider (Database): 国立国会図書館 : 国立国会図書館デジタルコレクション; https://dl.ndl.go.jp

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2021-03-07 再収集