title: Chemiluminescence response of equine alveolar macrophages during stimulation with latex beads, or IgG-opsonized sheep red blood cells.
abstract: Isolated equine alveolar macrophages were shown to generate a luminol-dependent light response when challenged with a phagocytic stimulus. The chemiluminescent response was not detected with luminol prepared at 1.0 x 10(-5) or 1.0 x 10(-4) molar concentrations, but was readily quantitated when used at a 1.0 x 10(-3) molar concentration. Challenge of the alveolar macrophages with latex particles or with equine IgG-coated sheep red blood cells elicited the luminol-dependent light response, whereas unchallenged equine alveolar macrophages or those challenged with unopsonized erythrocytes failed to emit light above background levels. Latex-bead-challenged macrophages released 8.06 times the total amount of light as those equine alveolar macrophages challenged with equine IgG-opsonized erythrocytes. This study represents the first investigation on chemiluminescence and equine alveolar macrophages.
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D004305:Dose-Response Relationship, Drug; D004912:Erythrocytes / Q000276:immunology; D006736:Horses; D007074:Immunoglobulin G / Q000276:immunology; D007840:Latex / Q000276:immunology; D008163:Luminescent Measurements; D008165:Luminol / Q000494:pharmacology; D008262:Macrophage Activation; D008264:Macrophages / Q000276:immunology*; D009895:Opsonin Proteins / Q000276:immunology; D011650:Pulmonary Alveoli / Q000276:immunology*; D012756:Sheep
chemical_list: D007074:Immunoglobulin G; D007840:Latex; D009895:Opsonin Proteins; D008165:Luminol