title: Comparative studies on immunologically and non-immunologically produced slow-reacting substances from man, guinea-pig and rat.
abstract: 1 Slow-reacting substance of anaphylaxis (SRS-A) was produced by antigen challenge of passively sensitized human lung and actively sensitized guinea-pig lung. 2 A slow-reacting substance (SRS) was prepared from the peritoneal fluid of rats treated with calcium ionophore A23187. 3 These substances were extensively purified by charcoal adsorption, Sephadex G-15 gel filtration, ether extraction and reverse phase high pressure liquid chromatography. 4 The three substances are pharmacologically, chemically and chromatographically indistinguishable. 5 Our data suggest that the same SRS entities are released from a variety of tissues and that these acidic lipids may have a wider physiological significance than just anaphylaxis.
mesh_terms: D000818:Animals; D012898:Autacoids / Q000096:biosynthesis / Q000302:isolation & purification* / Q000494:pharmacology; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002850:Chromatography, Gel; D002851:Chromatography, High Pressure Liquid; D006168:Guinea Pigs; D006801:Humans; D066298:In Vitro Techniques; D008168:Lung / Q000378:metabolism; D051381:Rats; D013189:SRS-A / Q000096:biosynthesis / Q000302:isolation & purification* / Q000494:pharmacology; D013045:Species Specificity
chemical_list: D012898:Autacoids; D013189:SRS-A