透過您的圖書館登入
IP:18.118.254.28
  • 學位論文

一氧化氮之分子影像探針BSQDA之合成及特性研究

Synthesis and Characterization of BSQDA for NO Molecular Imaging

指導教授 : 王雲銘

摘要


一氧化氮是人體非常重要的訊息傳遞分子,影響人體生理作用甚劇。本研究主要著重在針對一氧化氮分子影像開發一個對一氧化氮具特異性的螢光探針(BSQDA)。目前在合成上獲得幾個重要的片段,如化合物4及化合物11,後續將這些片段組合起來的合成步驟仍在繼續進行中。本研究中針對DNIC鐵錯合物[PPN][(S(CH2)3S)Fe(NO)2]進行縱向弛緩率(r1)探討,發現其弛緩率為0.03 mM-1s-1,雖然數值偏低,仍具有增進磁振造影影像對比強度的能力;針對釓金屬錯合物[Gd(DTPA)(H2O)]2?{與一氧化氮反應後的縱向弛緩率探討中,發現此類內層水交換速率較慢的釓金屬錯合物其內層水分子不易被一氧化氮所取代。

關鍵字

一氧化氮 分子影像 探針

並列摘要


Nitric oxide is an ubiquitous messenger molecule in human body. In order to study the molecular image of nitric oxide, we make efforts in synthesis of the nitric oxide fluorescence probe, BSQDA. Some important fragments (compound 4 and 11) are synthesized, and the further synthetic steps are continuing. In addition, the longitudinal relaxivity (r¬1) of the dinitrosyl iron complex, [PPN][(S(CH2)3S)Fe(NO)2], is 0.03 mM?{1s?{1. It shows contrast property to enhance the signal intensity in MRI even at low magnetic field (20 MHz). For the [Gd(DTPA)(H2O)]2?{, the longitudinal relaxation times between [Gd(DTPA)(H2O)]2?{ and [Gd(DTPA)(H2O)]2?{ with NO are identical. It means that it’s probably hard to replace the inner sphere water of [Gd(DTPA)(H2O)]2?{ for NO.

並列關鍵字

nitric oxide molecular imaging probe

參考文獻


1. Archer, S., FASEB J. 1993, 7, 349-360.
2. Duimstra, J. A.; Femia, F. J.; Meade, T. J., J. Am. Chem. Soc. 2005, 127, 12847-12855.
3. Chang, Y.-T.; Cheng, C.-M.; Su, Y.-Z.; Lee, W.-T.; Hsu, J.-S.; Liu, G.-C.; Cheng, T.-L.; Wang, Y.-M., Bioconjugate Chem. 2007, 18, 1716.
4. Brown, L. A.; Key, B. J.; Lovick, T. A., J. Neurosci. Methods 1999, 92, 101-110.
5. Ouyang, J.; Hong, H.; Zhao, Y.; Shen, H.; Shen, C.; Zhang, C.; Zhang, J., Nitric Oxide 2008, 19, 42-49.

延伸閱讀