Agents and Actions

, Volume 35, Issue 3–4, pp 141–148 | Cite as

The effect of prednisolone on substance P-induced vascular permeability in mice

  • H. Nagai
  • T. Sakamoto
  • N. Inagaki
  • T. Miura
  • A. Koda
Allergy, Histamine and Kinins
Received:
Accepted:

Abstract

The effect of prednisolone on the substance P (SP)-induced vascular permeability increase in male ddY, WBB6 F1−+/+ (control) and WBB6 F1-W/Wv (no mast cell in skin or internal organs) mice was investigated. 1) SP (1–10 000 pg/site) increased vascular permeability in ddY, WBB6 F1−+/+ and WBB6 F1-W/Wv mice ears. 2) SP (100 pg/site)-induced vascular permeability was inhibited by prednisolone (10 mg/kg) administered intraperitoneally 3 to 12 hours prior to the elicitation of the reaction in ddY mice. When dexamethasone at a dose of 1 mg/kg was administered intraperitoneally 2 to 24 hours prior to the elicitation of the reaction, significant inhibition was observed. When prednisolone was administered intraperitoneally 8 hours prior to the elicitation of the reaction, the SP-induced capillary permeability increase in both ddY and WBB6 F1-W/Wv mice was clearly inhibited by the drug at doses of 5 and 10 mg/kg. 3) Diphenhydramine (1 and 10 mg/kg) inhibited SP-induced vascular reaction in ddY mice but not in WBB6 F1-W/Wv mice. 4) Atropine (10 mg/kg) inhibited SP-induced vascular reaction in both ddY and WBB6 F1-W/Wv mice. But acetylcholine did not cause an increase of vascular permeability in ddY and WBB6 F1-W/Wv mice ears. 5) Prednisolone (5 mg/kg) inhibited histamine- and serotonin-induced vascular permeability in ddY and WBB6 F1-W/Wv mice ears. 6) Prednisolone (5 and 10 mg/kg) inhibited the SP-induced histamine release from ddY mice peritoneal mast cells. These results suggest that the vascular effect of SP is mediated by both mast cell dependent (release of histamine from mast cells) and mast cell independent mechanisms. Prednisolone inhibits the SP-induced vascular permeability mediated by both mechanisms in mice.

Keywords

Mast Cell Histamine Dexamethasone Acetylcholine Prednisolone 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Birkhäuser Verlag 1992

Authors and Affiliations

  • H. Nagai
    • 1
  • T. Sakamoto
    • 1
  • N. Inagaki
    • 1
  • T. Miura
    • 1
  • A. Koda
    • 1
  1. 1.Department of PharmacologyGifu Pharmaceutical UniversityGifuJapan

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