title: The development of sensitive and specific radioimmunoassays for leukotrienes.
abstract: Radioimmunoassays for leukotriene C4 (LTC4) and for leukotriene B4 (LTB4) have been developed. LTC4 was conjugated with thiolated hemocyanin (Keyhole Limpet) (KLH) using 6-(N-maleimido)hexanoic acid chloride as coupling agent. LTB4 was converted to its hydrazide derivative, via the delta-lactone and the hydrazide was similarly coupled with thiolated KLH using 6-(N-maleimido)hexanoic acid chloride as coupling agent. These conjugates were used to consistently raise high titres of anti-leukotriene antibodies in rabbits. 14,15-[3H]-LTC4 was prepared by total synthesis via two routes. 14,15-[3H]-LTB4 was prepared by total synthesis. The assay for LTC4 recognizes LTC4, LTD4 and LTF4, and to a lesser extent, LTE4 with a detection limit of ca. 0.1 pmoles LTC4 per mL of sample. The assay for LTB4 is highly specific and has a similar detection limit.
mesh_terms: D000818:Animals; D007975:Leukotriene B4 / Q000032:analysis*; D011817:Rabbits; D011863:Radioimmunoassay / Q000379:methods; D013189:SRS-A / Q000032:analysis*
chemical_list: D013189:SRS-A; D007975:Leukotriene B4