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  • Title: Leukotriene biosynthesis and metabolism detected by the combined use of HPLC and radioimmunoassay.
    Author: Beaubien BC, Tippins JR, Morris HR.
    Journal: Biochem Biophys Res Commun; 1984 Nov 30; 125(1):97-104. PubMed ID: 6095847.
    Abstract:
    A radioimmunoassay for leukotriene D4 (LTD4) has been developed which exhibits sufficiently high sensitivity to be useful in conjunction with RP-HPLC in the detection of LTC4, LTD4 and LTE4 in physiological samples. The detection limit of the assay was approximately 240 amoles, using antiserum TG1 at a dilution of 6 X 10(3), with 50% displacement at 70 fmoles. Antiserum NW1, also at a dilution of 6 X 10(3), displayed a detection limit of 9 fmoles with 50% displacement at 100 fmoles. The two antisera have similiar crossreactivities, both manifesting useful affinities for LTE4 and LTC4, and low or negligible affinities for other arachidonic acid metabolites, or their derivatives. The radioimmunoassay was used to detect 1) LTC4, LTD4 and LTE4 released from perfused rat lung in response to platelet-activating factor (PAF) stimulation, 2) conversion of exogenous LTD4 to LTE4 in human blood, and 3) endogenous leukotrienes in human blood samples.
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