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- W2044896616 abstract "The metabolism of exogenous leukotriene B4 (LTB4) was investigated in venous blood obtained from normal and asthmatic subjects. Using specific radioimmunoassay (RIA) and reverse-phase high performance liquid chromatography (RP-HPLC) techniques we have demonstrated that LTB4 is relatively stable during a 2 hr incubation period at 37 degrees C in our system in vitro. Nevertheless, chromatographic analysis revealed the presence of two products which had retention times identical to 20-hydroxy LTB4 (20-0H LTB4) and 20-carboxy LTB4 (20-C00H LTB4) in which the dicarboxylic derivative was the main metabolite present after 15 min incubation. The amount of LTB4 and its w-oxidation products observed after a 2 hr incubation period was 73% and 24% respectively. There was no basal release of LTB4 from blood. The appearance of these oxidative products was totally suppressed at 4 degrees C and with incubations performed with either venous plasma or Hartmann's control. No significant difference was observed in substrate metabolism between normal and asthmatic subjects. Our results demonstrate that LTB4 is slowly degraded in human whole blood through a cellular dependent process of w-oxidation which may be an important pathway for regulating the availability of this potent biologically active substance." @default.
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- W2044896616 date "1988-06-01" @default.
- W2044896616 modified "2023-09-27" @default.
- W2044896616 title "The metabolism “in vitro” of leukotriene B4 in blood of normal subjects and asthmatic patients" @default.
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- W2044896616 doi "https://doi.org/10.1016/0090-6980(88)90113-x" @default.
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