title: Three-peaked chemiluminescent response of human peripheral blood leukocytes following stimulation with phytohaemagglutinin (PHA).
abstract: Luminol-enhanced chemiluminescence (CL) was used to examine the response of various leukocyte populations following stimulation with a crude extract of Phaseolus vulgaris, namely phytohaemagglutinin (PHA-C). Populations stimulated included a human peripheral mixed leukocyte preparation (MLP), and purified preparations of lymphocytes, monocytes and polymorphonuclear leukocytes (PMNL). Mouse peritoneal exudate cells and the lymphocytic cells lines Molt #4 and Daudi were also stimulated. Following stimulation, a characteristic three-peaked chemiluminescent response was obtained from the MLP population. Little or no response was obtained from the purified lymphocytes. Monocytes produced a sharp peak corresponding to the second peak of the MLP response and PMNL produced a broad peak corresponding to the third peak of the MLP response. Mouse peritoneal exudate cells containing lymphocytes and monocytes/macrophages showed a two-peaked stimulation which corresponded to the first two peaks of the MLP response. Molt #4 and Daudi showed no chemiluminescence if stimulated individually, but if added to a MLP substantial enhancement of the first and second peaks was observed. These results indicate some form of lymphocyte/monocyte interaction leading to enhanced CL following PHA-C stimulation.
authors: Cancer Immunology Section, Velindre Hospital, Cardiff, UK.
authors: N
authors: N
authors: Warren
authors: A E
authors: AE
authors: Jones
authors: A J
authors: AJ
authors: Bater
mesh_terms: D000818:Animals; D002460:Cell Line; D006801:Humans; D066298:In Vitro Techniques; D007962:Leukocytes / Q000166:cytology / Q000276:immunology / Q000378:metabolism*; D007963:Leukocytes, Mononuclear / Q000276:immunology / Q000378:metabolism; D008163:Luminescent Measurements; D008165:Luminol / Q000378:metabolism; D051379:Mice; D010529:Peritoneal Cavity / Q000166:cytology; D010835:Phytohemagglutinins / Q000494:pharmacology
chemical_list: D010835:Phytohemagglutinins; D008165:Luminol