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Protective effects of (6R)-5,6,7,8-tetrahydro-l-biopterin on local ischemia/reperfusion-induced suppression of reactive hyperemia in rat gingiva
https://kdu.repo.nii.ac.jp/records/948
https://kdu.repo.nii.ac.jp/records/9487a6adc85-434b-4710-a42c-ce7f377a7b4b
名前 / ファイル | ライセンス | アクション |
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Full Text(全文) (784.8 kB)
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論文内容要旨 (183.4 kB)
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論文審査要旨、最終審査の結果の要旨 (270.8 kB)
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Item type | 学位論文 / Thesis or Dissertation(1) | |||||
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公開日 | 2016-07-06 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Protective effects of (6R)-5,6,7,8-tetrahydro-l-biopterin on local ischemia/reperfusion-induced suppression of reactive hyperemia in rat gingiva | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | BH4 | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | gingiva | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | nitric oxide synthases | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | reactive hyperemia | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | reperfusion | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||
資源タイプ | doctoral thesis | |||||
アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
その他(別言語等)のタイトル | ||||||
その他のタイトル | ラット歯肉における局所虚血/再灌流誘発性反応性充血の抑制に対する(6R)-5,6,7,8-tetrahydro-L-biopterinの防御効果 | |||||
言語 | ja | |||||
著者 |
田中, 優作
× 田中, 優作× Tanaka, Yusaku |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We herein investigated the regulatory mechanism in the circulation responsible for rat gingival reactive hyperemia (RH) associated with ischemia/reperfusion (I/R). RH was analyzed using a laser Doppler flowmeter. RH and I/R were elicited by gingival compression and release with a laser Doppler probe. RH increased in a time-dependent manner when the duration of compression was between 30 s and 20 min. This increase was significantly suppressed by N (ω)-nitro-l-arginine-methyl-ester (l-NAME), 7-nitroindazole (7-NI), and 2,4-diamino-6-hydroxypyrimidine (DAHP). However, RH was markedly inhibited following 60 min of compression. This inhibition was significantly decreased by treatments with superoxide dismutase (SOD), (6R)-5,6,7,8-tetrahydro-l-biopterin (BH4), and sepiapterin. The luminescent intensity of superoxide anion (O2 (•-))-induced 2-methyl-6-(4-methoxyphenyl)-3,7-dihydroimidazo-[1,2-a] pyrazine-3-one (MCLA) was markedly decreased by SOD and BH4, but only slightly by sepiapterin. BH4 significantly decreased O2 (•-) scavenging activity in a time-dependent manner. These results suggested that nitric oxide (NO) secreted by the nitrergic nerve played a role in regulating local circulation in rat gingiva. This NO-related regulation of local circulation was temporarily inhibited in the gingiva by the I/R treatment. The decrease observed in the production of NO, which was caused by suppression of NO synthase (NOS) activity subsequent to depletion of the NOS co-factor BH4 by O2 (•-), played a partial role in this inhibition. | |||||
学位名 | ||||||
学位名 | 博士(臨床歯学) | |||||
学位授与機関 | ||||||
学位授与機関識別子Scheme | kakenhi | |||||
学位授与機関識別子 | 32703 | |||||
学位授与機関名 | 神奈川歯科大学 | |||||
学位授与年度 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 2015 | |||||
学位授与年月日 | ||||||
学位授与年月日 | 2016-03-17 | |||||
学位授与番号 | ||||||
学位授与番号 | 甲第482号 | |||||
権利 | ||||||
権利情報 | 日本酸化ストレス学会 | |||||
情報源 | ||||||
関連名称 | Journal of Clinical Biochemistry and Nutrition, 58(1):69-75, 2016.1. doi: 10.3164/jcbn.15-69 | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://www.jstage.jst.go.jp/article/jcbn/58/1/58_15-69/_article | |||||
関連名称 | J-STAGE | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
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 | |||||
見出し | ||||||
小見出し | ※セキュリティ設定あり | |||||
言語 | ja |