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  • Title: Determination of amitriptyline and nortriptyline in human liver microsomes with reversed-phase HPLC in vitro.
    Author: Shu Y, Zhu RH, Xu ZH, Zhou HH.
    Journal: Zhongguo Yao Li Xue Bao; 1998 Jul; 19(4):343-6. PubMed ID: 10375781.
    Abstract:
    AIM: To develop a method for simultaneous determinations of amitriptyline (Ami) and its metabolite nortriptyline (Nor) in human liver microsomes. METHODS: An incubation buffer containing microsomes, NADPH-generating system, and Ami, after termination of enzyme reaction and desipramine (Des) as internal standard (IS), was extracted with diethy ether and separated on a reversed-phase ODS column. Detection was achieved at 242 nm by ultraviolet detector. RESULTS: No potential interfering peaks were found. Ami and Nor gave rapid elution and baseline resolution. The linear curves of both analyses ranged 0.02-10 nmol and the limit of detection was 0.01 nmol. The recovery (94%-101%) had good precision with relative s of < 8.3%. CONCLUSION: This method is rapid, sensitive, and simple for studying the metabolism of Ami and Nor.
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