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    Development of a high performance liquid chromatography-tandem mass method for determination of bis(7)-tacrine, a promising anti-Alzheimer's dimer, in rat blood.

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    Authors
    Yu, Hua
    Ho, Jason
    Kan, Kelvin K.
    Cheng, Bobby
    Li, Wen-Ming
    Zhang, Li
    Lin, Ge
    Pang, Yuan-Ping
    Gu, Zhe-Ming
    Chan, Kelvin C.
    Wang, Yi-Tao
    Han, Yi-Fan
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    Issue Date
    2007
    
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    Abstract
    An analytical method using on-line high performance liquid chromatography-tandem mass spectrometry with electrospray ionization was developed and applied for the quantification of bis(7)-tacrine (B7T) in rat blood. B7T and pimozide (internal standard, IS) were extracted in a single step from 100 microl of alkalized blood with ethyl acetate. Analytes were separated using an Extend C-18 column at 25 degrees C. The elution was achieved isocratically with a mobile phase composed of 0.05% aqueous formic acid and acetonitrile (60:40, v/v) at a flow rate of 0.35 ml/min. Quantification was achieved by monitoring the selected ions at m/z 247 for B7T and m/z 462-->m/z 328 for pimozide. Retention times were 1.45 and 2.23 min for B7T and IS, respectively. Calibration curves were linear in the range from 86.4 to 2160.0 ng/ml. The established method is rapid, selective and sensitive for the identification and quantification of B7T in biological samples. The assay is accurate (bias <10%) and reproducible (intra- and inter-day variation <10%), with detection and quantification limit of 3.6 and 42.3 ng/ml, respectively. Furthermore, it was successfully applied for the pharmacokinetic measurement of B7T in rat with a single intravenous administration at 0.3mg/kg.
    Citation
    Journal of pharmaceutical and biomedical analysis, 44(5): 1133-1188
    Publisher
    Amsterdam: Elsevier
    Journal
    Journal of pharmaceutical and biomedical analysis
    URI
    http://hdl.handle.net/2436/29678
    DOI
    10.1016/j.jpba.2007.05.028
    PubMed ID
    17628383
    Additional Links
    http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TGX-4NTJH0F-1&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=ea1d89987a34d1285fa1f7f826ca1307
    Type
    Journal article
    Language
    en
    ISSN
    0731-7085
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.jpba.2007.05.028
    Scopus Count
    Collections
    Research Institute in Healthcare Science

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