Skip to main content
British Journal of Pharmacology logoLink to British Journal of Pharmacology
. 1975 Jul;54(3):301–307. doi: 10.1111/j.1476-5381.1975.tb07569.x

Inhibition of the pulmonary inactivation of prostaglandins in vivo by di-4-phloretin phosphate.

D J Crutchley, P J Piper
PMCID: PMC1666487  PMID: 1164590

Abstract

1 Inactivation of prostaglandin E2 in the pulmonary circulation of rabbits in vivo was measured by comparing the hypotensive effects of doses given intravenously and intra-arterially. 2 Di-4-phloretin phosphate (DPP) 25-100 mug kg-1 min-1 inhibited the inactivation of prostaglandin E2 in the pulmonary circulation. 3 These doses of DPP caused a marked shift to the left of the dose-response curve to prostaglandin E2 given intravenously but did not affect the dose-response curve to prostaglandin E2 given intra-arterially. 4 Inhibition of pulmonary inactivation of prostaglandins E2 and F2alpha caused marked potentiation of their gastrointestinal effects. 5 At these doses antagonism of the hypotensive action of prostaglandin E2 by DPP was seldom seen but the gastrointestinal effect of prostaglandin F2alpha was sometimes antagonized. 6 After treatment with DPP 100 mug kg-1 min-1, high doses of prostaglandin were sometimes lethal.

Full text

PDF
301

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. ANGGARD E., BERGSTROM S. Biological effects of an unsaturated trihydroxy acid (PGF2alfa) from normal swine lung. Acta Physiol Scand. 1963 May;58:1–12. doi: 10.1111/j.1748-1716.1963.tb02622.x. [DOI] [PubMed] [Google Scholar]
  2. Alabaster V. A., Bakhle Y. S. The inactivation of bradykinin in the pulmonary circulation of isolated lungs. Br J Pharmacol. 1972 Jun;45(2):299–310. doi: 10.1111/j.1476-5381.1972.tb08084.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Bedwani J. R., Marley P. B. Enhanced inactivation of prostaglandin E2 by the rabbit lung during pregnancy or progesterone treatment. Br J Pharmacol. 1975 Apr;53(4):547–554. doi: 10.1111/j.1476-5381.1975.tb07393.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Bedwani J. R., Marley P. B. Proceedings: Increased inactivation of prostaglandin E2 by the rabbit lung during pregnancy. Br J Pharmacol. 1974 Mar;50(3):459P–460P. [PMC free article] [PubMed] [Google Scholar]
  5. Crutchley D. J., Piper P. J. Inhibition of the pulmonary inactivation of prostaglandins in rabbit in vivo. Br J Pharmacol. 1975 Mar;53(3):467P–467P. [PMC free article] [PubMed] [Google Scholar]
  6. Crutchley D. J., Piper P. J. Prostaglandin inactivation in guinea-pig lung and its inhibition. Br J Pharmacol. 1974 Oct;52(2):197–203. doi: 10.1111/j.1476-5381.1974.tb09700.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Eakins K. E., Karim S. M., Miller J. D. Antagonism of some smooth muscle actions of prostaglandins by polyphloretin phosphate. Br J Pharmacol. 1970 Jul;39(3):556–563. doi: 10.1111/j.1476-5381.1970.tb10363.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Ferreira S. H., Vane J. R. Prostaglandins: their disappearance from and release into the circulation. Nature. 1967 Dec 2;216(5118):868–873. doi: 10.1038/216868a0. [DOI] [PubMed] [Google Scholar]
  9. Ferreira S. H., Vane J. R. The disappearance of bradykinin and eledoisin in the circulation and vascular beds of the cat. Br J Pharmacol Chemother. 1967 Jun;30(2):417–424. doi: 10.1111/j.1476-5381.1967.tb02148.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Horton E. W. Hypotheses on physiological roles of prostaglandins. Physiol Rev. 1969 Jan;49(1):122–161. doi: 10.1152/physrev.1969.49.1.122. [DOI] [PubMed] [Google Scholar]
  11. Horton E. W., Jones R. L. Prostaglandins A1,A2 and 19-hydroxy A1; their actions on smooth muscle and their inactivation on passage through the pulmonary and hepatic portal vascular beds. Br J Pharmacol. 1969 Nov;37(3):705–722. doi: 10.1111/j.1476-5381.1969.tb08509.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Piper P. J., Vane J. R., Wyllie J. H. Inactivation of prostaglandins by the lungs. Nature. 1970 Feb 14;225(5233):600–604. doi: 10.1038/225600a0. [DOI] [PubMed] [Google Scholar]
  13. Ryan J. W., Roblero J., Stewart J. M. Inactivation of bradykinin in the pulmonary circulation. Biochem J. 1968 Dec;110(4):795–797. doi: 10.1042/bj1100795. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Silver M. J., Smith J. B., Ingerman C., Kocsis J. J. Human blood prostaglandins: formation during clotting. Prostaglandins. 1972 Jun;1(6):429–436. doi: 10.1016/0090-6980(72)90011-1. [DOI] [PubMed] [Google Scholar]
  15. Ueda E., Hatanaka Y., Ito T., Kokubu T., Yamamura Y. Metabolism of vasoactive substances in the lung. Jpn Circ J. 1973 Oct;37(10):1255–1259. doi: 10.1253/jcj.37.1255. [DOI] [PubMed] [Google Scholar]
  16. Vane J. R. The release and fate of vaso-active hormones in the circulation. Br J Pharmacol. 1969 Feb;35(2):209–242. doi: 10.1111/j.1476-5381.1969.tb07982.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. Villanueva R., Hinds L., Katz R. L., Eakins K. E. The effect of polyphloretin phosphate on some smooth muscle actions of prostaglandins in the cat. J Pharmacol Exp Ther. 1972 Jan;180(1):78–85. [PubMed] [Google Scholar]

Articles from British Journal of Pharmacology are provided here courtesy of The British Pharmacological Society

RESOURCES