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Effects of bilirubin configurational photoisomers on the measurement of direct bilirubin by the vanadate oxidation method
https://kagawa-u.repo.nii.ac.jp/records/7451
https://kagawa-u.repo.nii.ac.jp/records/745121f80128-e586-4ae6-a813-f94d9849a465
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本文 (363.5 kB)
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内容の要旨 (103.1 kB)
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審査の結果の要旨 (111.8 kB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||||||||
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| 公開日 | 2021-07-13 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Effects of bilirubin configurational photoisomers on the measurement of direct bilirubin by the vanadate oxidation method | |||||||||||
| 言語 | en | |||||||||||
| 言語 | ||||||||||||
| 言語 | eng | |||||||||||
| 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 | |||||||||||
| その他（別言語等）のタイトル | ||||||||||||
| その他のタイトル | ビリルビン光立体異性体がバナジン酸酸化法による直接ビリルビン測定値に与える影響について | |||||||||||
| 言語 | ja | |||||||||||
| 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 | |||||||||||
| 著者 |
川本, 昌平
× 川本, 昌平
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | Background: Direct-reacting bilirubin concentrations measured using vanadate chemical oxidation method do not exactly match the conjugated bilirubin concentration. One of the causes is the effect of bilirubin photoisomers. However, the quantitative evaluation of the effects of these photoisomers has not been sufficiently conducted. In particular, the influence of bilirubin configurational isomers on direct bilirubin is the most critical factor. | |||||||||||
| 言語 | en | |||||||||||
| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | Methods: Sixteen residual serum samples were used. For quantitative analysis based on the change in direct bilirubin and bilirubin configurational isomer, samples were irradiated via blue light-emitting diodes to suppress the production of bilirubin structural isomers. Total bilirubin and direct bilirubin concentrations were measured using the vanadate chemical oxidation method. Concentrations of 4Z,15Z-bilirubin IXα and its photoisomers were measured using high-performance liquid chromatography. The sum of 4Z,15E-bilirubin IXα and 4E,15Z-bilirubin IXα was notated as bilirubin configurational isomer, and the differences between the measured values of the irradiated and non-irradiated samples were calculated and notated as ΔDB and ΔBCI. | |||||||||||
| 言語 | en | |||||||||||
| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | Results: In non-irradiated and irradiated samples, total bilirubin and direct bilirubin concentrations were 10.73 mg/dL with significant a decrease to 10.60 mg/dL and 0.69 mg/dL with a significant increase to 0.78 mg/dL, while bilirubin configurational isomer values were 1.00 mg/dL and 1.52 mg/dL, respectively. The linear regression equation revealed a significant positive correlation of Y = 0.187X-0.006 between ΔDB (Y) and ΔBCI (X). | |||||||||||
| 言語 | en | |||||||||||
| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | Conclusion: Applying the vanadate chemical oxidation method affected approximately 19% of the bilirubin configurational isomer concentration for direct bilirubin. Extreme caution is necessary when interpreting the measured values of samples indicative of unconjugated hyperbilirubinaemia. | |||||||||||
| 言語 | en | |||||||||||
| 学位名 | ||||||||||||
| 言語 | ja | |||||||||||
| 学位名 | 博士（医学） | |||||||||||
| 学位授与機関 | ||||||||||||
| 識別子Scheme | kakenhi | |||||||||||
| 識別子 | 16201 | |||||||||||
| 言語 | ja | |||||||||||
| 機関名 | 香川大学 | |||||||||||
| 言語 | en | |||||||||||
| 機関名 | Kagawa University | |||||||||||
| 学位授与年月日 | ||||||||||||
| 学位授与年月日 | 2021-06-29 | |||||||||||
| 学位授与番号 | ||||||||||||
| 学位授与番号 | 甲第781号 | |||||||||||
| 権利 | ||||||||||||
| 言語 | en | |||||||||||
| 権利情報 | No Embargo | |||||||||||
| PubMed番号 | ||||||||||||
| 識別子タイプ | PMID | |||||||||||
| 関連識別子 | 33588585 | |||||||||||
| 関連サイト | ||||||||||||
| 関連タイプ | isVersionOf | |||||||||||
| 識別子タイプ | DOI | |||||||||||
| 関連識別子 | https://doi.org/10.1177/0004563221999068 | |||||||||||
| 著者版フラグ | ||||||||||||
| 出版タイプ | P | |||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_fa2ee174bc00049f | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | Analytes | |||||||||||
| キーワード | ||||||||||||
| 言語 | en | |||||||||||
| 主題Scheme | Other | |||||||||||
| 主題 | bilirubin | |||||||||||
