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Chinese Journal of Clinical Pharmacology and Therapeutics ›› 2003, Vol. 8 ›› Issue (5): 506-510.

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Anti-asthmatic effects of interleukin-1 receptor antagonist in sensitized guineaPigs

ZHANG Hong-Quan, XU Zheng-Xin, GE Xiao-Qun, LI Ji-Ping, SUN Yun,LIU LI   

  1. Medical,Pharmaceutical Academe of Yangzhou University,Yangzhou225001,Jiangsu,China
  • Received:2003-04-30 Accepted:2003-05-08 Online:2003-10-26 Published:2020-11-19
  • Contact: ZHANG Hong-Quan,male,director,professor,engaged in pulmonary pharmacology.Tel:0514-7978877  Fax:0514-7978821
  • Supported by:
    Project supported by 863 National Natural S cience Foundation of China(№2001AA215251)

Abstract: AIM: To observe the anti-asthmatic effects of interleukin-1 receptor antagonist (IL-1ra)in sensitized guineaPigs.METHODS: Sensitized guineaPigs were made by ovalbumin,and the tension and contraction of tracheal smooth muscles were measured by force-displacement transducer and MedLab software.RESULTS: In the doses of 0.33 -9.0 mg·kg-1,IL-1raProlonged the asthmatic incubationPeriod and reduced animal tumble ratio in asthma guineaPigs induced by histamine-acetylcholine or ovalbumin.These effects were dose-dependent.In vitro,IL-1ra could directly relax tracheal smooth muscles uPthe dose of 3×; 10-7mol·L-1and the EC50 value was 5.88×; 10-7mol·L-1.IL-1ra antagonized the increase of trachea tension stimulated by ovalbumin at the dose of 10-7mol·L-1.Moreover,IL-1raPrevented tracheal smooth muscle contraction induced by ovalbumin uPthe dose of 3×; 10-7mol·L-1,and the IC50value was 4.48×; 10-7mol·L-1.CONCLUSIONS: IL-1ra can directly relax tracheal smooth muscles in sensitized guineaPigs,and antagonize asthma caused by many kinds of antigens.;

Key words: pharmacology, interleukin-1, receptor antagonist, histamine, acetylcholine, asthma, contraction, guineaPigs

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