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Effect of inhibition of synthesis and receptor antagonism of SRS-A in cardiac anaphylaxis.
Br J Pharmacol. 1983 Sep; 80(1):73-80.BJ

Abstract

The effects of infusions of the lipoxygenase inhibitor nordihydroguaiaretic acid (NDGA, 1.1 X 10(-7) mol min-1) and the antagonist of slow-reacting substance of anaphylaxis (SRS-A) FPL 55712 (1.2 X 10(-7) mol min-1) on the coronary constriction and the release of SRS-A, leukotreine C4-like immunoreactivity, thromboxane B2 and 6-keto-prostaglandin F1 alpha from perfused anaphylactic guinea-pig hearts were investigated. Both NDGA and FPL 55712 in the concentrations used induced an increase in basal coronary flow, but did not prevent the coronary flow reduction in the early phase (0-4 min) after antigen injection. On the other hand, NDGA and FPL 55712 inhibited the less pronounced long-lasting coronary flow reduction in the later phase of cardiac anaphylaxis. NDGA decreased the release of SRS-A from the anaphylactic guinea-pig hearts below or close to the detection limit of the bioassay and simultaneously diminished the release of leukotriene C4-like immunoreactivity. On the other hand, FPL 55712 did not influence the amounts of leukotriene C4-like immunoreactivity released in cardiac anaphylaxis. Neither NDGA nor FPL 55712 affected the release of immunoreactive thromboxane B2 (TXB2) from anaphylactic guinea-pig hearts. Release of 6-keto-prostaglandin F1 alpha after challenge, however, was decreased by NDGA, while FPL 55712 had no significant effect. These results suggest, that SRS-A may be a relatively more important mediator in the late phase of coronary constriction occurring during cardiac anaphylaxis, while the effects of other mediators, particularly vasoconstrictor cyclo-oxygenase products, seem to prevail in the early phase.

Authors

No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

6689134

Citation

Aehringhaus, U, et al. "Effect of Inhibition of Synthesis and Receptor Antagonism of SRS-A in Cardiac Anaphylaxis." British Journal of Pharmacology, vol. 80, no. 1, 1983, pp. 73-80.
Aehringhaus U, Peskar BA, Wittenberg HR, et al. Effect of inhibition of synthesis and receptor antagonism of SRS-A in cardiac anaphylaxis. Br J Pharmacol. 1983;80(1):73-80.
Aehringhaus, U., Peskar, B. A., Wittenberg, H. R., & Wölbling, R. H. (1983). Effect of inhibition of synthesis and receptor antagonism of SRS-A in cardiac anaphylaxis. British Journal of Pharmacology, 80(1), 73-80.
Aehringhaus U, et al. Effect of Inhibition of Synthesis and Receptor Antagonism of SRS-A in Cardiac Anaphylaxis. Br J Pharmacol. 1983;80(1):73-80. PubMed PMID: 6689134.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of inhibition of synthesis and receptor antagonism of SRS-A in cardiac anaphylaxis. AU - Aehringhaus,U, AU - Peskar,B A, AU - Wittenberg,H R, AU - Wölbling,R H, PY - 1983/9/1/pubmed PY - 1983/9/1/medline PY - 1983/9/1/entrez SP - 73 EP - 80 JF - British journal of pharmacology JO - Br J Pharmacol VL - 80 IS - 1 N2 - The effects of infusions of the lipoxygenase inhibitor nordihydroguaiaretic acid (NDGA, 1.1 X 10(-7) mol min-1) and the antagonist of slow-reacting substance of anaphylaxis (SRS-A) FPL 55712 (1.2 X 10(-7) mol min-1) on the coronary constriction and the release of SRS-A, leukotreine C4-like immunoreactivity, thromboxane B2 and 6-keto-prostaglandin F1 alpha from perfused anaphylactic guinea-pig hearts were investigated. Both NDGA and FPL 55712 in the concentrations used induced an increase in basal coronary flow, but did not prevent the coronary flow reduction in the early phase (0-4 min) after antigen injection. On the other hand, NDGA and FPL 55712 inhibited the less pronounced long-lasting coronary flow reduction in the later phase of cardiac anaphylaxis. NDGA decreased the release of SRS-A from the anaphylactic guinea-pig hearts below or close to the detection limit of the bioassay and simultaneously diminished the release of leukotriene C4-like immunoreactivity. On the other hand, FPL 55712 did not influence the amounts of leukotriene C4-like immunoreactivity released in cardiac anaphylaxis. Neither NDGA nor FPL 55712 affected the release of immunoreactive thromboxane B2 (TXB2) from anaphylactic guinea-pig hearts. Release of 6-keto-prostaglandin F1 alpha after challenge, however, was decreased by NDGA, while FPL 55712 had no significant effect. These results suggest, that SRS-A may be a relatively more important mediator in the late phase of coronary constriction occurring during cardiac anaphylaxis, while the effects of other mediators, particularly vasoconstrictor cyclo-oxygenase products, seem to prevail in the early phase. SN - 0007-1188 UR - https://www.unboundmedicine.com/medline/citation/6689134/Effect_of_inhibition_of_synthesis_and_receptor_antagonism_of_SRS_A_in_cardiac_anaphylaxis_ L2 - https://onlinelibrary.wiley.com/resolve/openurl?genre=article&sid=nlm:pubmed&issn=0007-1188&date=1983&volume=80&issue=1&spage=73 DB - PRIME DP - Unbound Medicine ER -