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  • Title: [Influence of mediators on plasminogen activator release].
    Author: Markwardt F, Klöcking HP.
    Journal: Acta Biol Med Ger; 1978; 37(10):1603-10. PubMed ID: 752212.
    Abstract:
    The influence of substances known as low molecular weight mediators such as biogenic amines, peptides and prostaglandins on the plasminogen activator release was studied in the isolated perfused pig ear. Among the substances tested, histamine and the plasma kinins bradykinin and kallidin were found to possess a dose-dependent activator-releasing effect, which in case of histamine can be suppressed by an antihistamine (promethazine). Serotonin and the prostaglandins at concentrations up to 10(-5)M possess no significant activator-releasing effect. Compared with the biogenic peptides angiotensin, oxytocin, vasopressin, and eledoisin, only the latter was found to release plasminogen activator. Studies on the influence of the substances tested on the capillary permeability showed that enhanced permeability is caused only by those mediators which cause also increased activator release.
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