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, Volume 13, Issue 2–3, pp 138–141 | Cite as

Compound 48/80 and substance P induced release of histamine and serotonin from rat peritoneal mast cells

  • Tatjana Irman-Florjanc
  • F. Erjavec
Histamine Release and Mast Cells


The effect of substance P and compound 48/80 on histamine and serotonin release from not isolated and isolated mast cells have been compared in experimentsin vitro. The response of not isolated and isolated mast cells were virtually identical. The release of both amines, in response to 48/80 and substance P, was dose-dependent. The percentage of histamine released by 48/80 was significantly higher than the percentage of serotonin, the difference being higher at lower concentrations of compound 48/80 after 15 min of incubation. Substance P also showed a tendency to higher efficiency for histamine than for serotonin release. In contrast to 48/80, the dose-response curves for histamine and serotonin release were parallel. These results support the view that the ratio between histamine and serotonin release depends on the liberator used. They also showed that this ratio can depend on the concentration of the agent inducing secretion. The results indicate that substance P as well as 48/80 act rather selectively as histamine liberators and that there is some difference in releasing properties of 48/80 and substance P.


Serotonin Mast Cell Histamine Serotonin Release Peritoneal Mast Cell 
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Copyright information

© Birkhäuser Verlag 1983

Authors and Affiliations

  • Tatjana Irman-Florjanc
    • 1
  • F. Erjavec
    • 1
  1. 1.Department of Pharmacology, Medical FacultyUniversity of LjubljanaLjubljanaYugoslavia

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