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pubmed-article:6815691pubmed:abstractTextA previously reported method for measuring tricyclic antidepressants (TCA) in plasma was modified to measure TCA, specifically amitriptyline (AMI) and nortriptyline (NOR) in rat brain tissue. Brains obtained from drug-free and AMI-treated rats were extracted and assayed using a Waters high-performance liquid chromatograph. Drug-free brain tissue contained no substances which interfered with the assay of these TCAs. Drug recovery averaged 90 +/- 3.4% (mean +/- SEM). Seven intra-run assays of a spiked brain tissue sample yielded coefficients of variation of 2.7% for AMI and 1.8% for NOR. Seven inter-run assays of the same sample varied 4.2% for AMI and 3.5% for NOR. Five separate assays of a brain homogenate sample spiked with 50 ng/ml of drug yielded values of 50 +/- 2.1 SEM ng/ml for AMI and 54 +/- 1.1 SEM ng/ml for NOR. Standard curves were linear when constructed from samples in a concentration range of 250--3,000 ng/g wet weight tissue (r = 0.96, P less than 0.001).lld:pubmed
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pubmed-article:6815691pubmed:authorpubmed-author:PreskornS HSHlld:pubmed
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pubmed-article:6815691pubmed:pagination23-4lld:pubmed
pubmed-article:6815691pubmed:dateRevised2007-11-14lld:pubmed
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pubmed-article:6815691pubmed:year1982lld:pubmed
pubmed-article:6815691pubmed:articleTitleA liquid chromatographic method for quantitating amitriptyline in brain tissue.lld:pubmed
pubmed-article:6815691pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:6815691pubmed:publicationTypeResearch Support, U.S. Gov't, P.H.S.lld:pubmed