Prostaglandin-generating factor of anaphylaxis. II. Characterization of activity
Steel, L.K.; Bach, D.; Kaliner, M.A.
Journal of Immunology 129(3): 1233-1238
1982
ISSN/ISBN: 0022-1767 PMID: 6180001 Document Number: 194313
Anaphylaxis of lung tissue leads to the generation of prostaglandins [PG]. A portion of the prostaglandin generation is due to a unique oligopeptide termed prostaglandin-generating factor of anaphylaxis (PGF-A), which is generated during anaphylaxis. The activity of PGF-A on human and guinea pig lung was characterized: peak PG formation occurs within 5-10 min of the addition of PGF-A, Ca but not Mg is required for PGF-A activity, and both physiologic pH and temperature are necessary for optimal activity. Human and guinea pig airway and parenchymal (lung) responses to PGF-A were similar (predominately PGF2.alpha.) but were not identical to each other (guinea pig parenchyma produces thromboxane as well). PGF-A is a novel, potent mediator generated during anaphylaxis of lung tissue that may contribute to the spectrum of tissue responses seen in allergic reactions.