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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/9281

    標題: 探討檳榔鹼與穀胱甘肽之間的交互作用
    Study on the interaction between Arecoline and Glutathione
    作者: 蕭捷元
    Chieh-Yuan Hsiao
    貢獻者: 楊竹茂
    關鍵字: 穀胱甘肽
    reaction scheme
    日期: 2007
    上傳時間: 2008-12-03 11:18:43 (UTC+8)
    摘要: 過去研究顯示,檳榔鹼和蔓皏?#32957;之間的交互作用與口腔癌的致病機制有關,然而兩者交互作用的機轉至目前尚未完全徹底闡明。本研究的目的主要在研究並探討檳榔鹼和蔓皏?#32957;兩者之間交互作用的機轉。
    首先以高壓液相層析法(HPLC)測定兩者在pH=2~12之緩衝溶液中濃度的變化。結果發現兩種化合物在酸性緩衝溶液(pH=2.0~6.0)中,幾乎無反應,然而在pH>7.0時兩者即能產生顯著的交互作用,亦即兩者濃度在20分鐘的反應時間內以非線性方式逐漸降低,此交互作用反應在pH 8.0與9.0時達到最高,且其反應在5分鐘內即顯著快速發生。然而,在pH>10.0以上時,可見部分檳榔鹼被水解成檳榔次鹼,而使得兩者之間的交互作用呈現稍微減低的現象。
    Previous studies have demonstrated that the interaction between Arecoline and Glutathione may be associated with the etiologic causes of oral cancer, however, the mechanisms have not precisely clarified till present. The aim of this study is to investigate and to clarify the possible mechanisms of the interaction.
    Initially, the changes of concentrations of both compounds in buffers with pH range from 2~12 were quantitatively determined by HPLC. The results of the interaction between both compounds in various pH values of buffer solutions found that there were nearly nonreactive in the acidic environment, whereas the significantly rapid interactive reactions were evoked in the buffer solutions with pH>7.0, where we found that the concentrations of both compounds were rapidly decreased within 20 minutes with non-linear patterns. The maximum reactions were occurred at pH 8~9 within 5 minutes. However, when the pH of buffers solution were higher than 10.0, a small portion of Arecoline could be hydrolyzed to Arecaidine, thus the interactive reactions were found to be slightly decreased.
    Subsequently, the possible adducts formed in the interacting reaction were then isolated and purified. Their purities were confirmed with HPLC.
    Eventually, the adducts were further analyzed with LC/MS/MS. The results of first collision showed that a major fragment mass of adduct formed in pH=8.0 buffer solution was 463 m/z; three major fragments of the adduct formed in pH=10.0 buffer solution were obtained and their masses were 463 m/z, 449 m/z and 420 m/z, respectively; the major fragment of adduct formed at pH=12 had a mass of 449 m/z. Getting togather, from the data including those produced in the second collisions at least of three possible adducts could be formed in the interactive reactions and their chemical structures were determined. The possible reaction schemes were also elucidated.
    關聯: 校內外完全公開
    Appears in Collections:[生物科技系(所)] 博碩士論文

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