Effects of baicalein on prostanoid generation from the lung and contractile responses of the trachea in guinea pig

The American Journal of Chinese Medicine
K MiyamotoT Furukawa

Abstract

Effects of baicalein on release of slow reacting substance of anaphylaxis (SRS-A) or leukotriene (LT) from the sensitized guinea pig lung after antigen challenge and tonus of guinea pig tracheal muscles were studied. Baicalein inhibited release of SRS-A from sensitized guinea pig lung after antigen challenge. High-performance liquid chromatography (HPLC) analysis revealed that released SRS-A consisted to LTC4 and D4. Baicalein also reduced release of LTC4 and D4 from the sensitized lung after antigen challenge. Baicalein relaxed the isolated guinea pig tracheal smooth muscle contracted by LTD4, carbachol or histamine. However, this compound produced a contraction when the tracheal muscle was contracted by prostaglandin F2 alpha(PGF2 alpha). This contraction by baicalein was abolished by pretreatment with indomethacin, a cyclooxygenase inhibitor. Baicalein elicited a relaxation in the normal non-sensitized preparation but a contraction in the tissue isolated from actively sensitized guinea pig in 4 among 7 cases. Baicalein also produced a contraction in the trachea pretreated with phorbol dibutyrate and contracted by carbachol, which was eliminated after treatment with indomethacin. The results suggest that baicalein exerts acti...Continue Reading

Citations

Feb 6, 2003·European Journal of Pharmacology·Norimichi NakahataSatoko Ohkubo
Jul 11, 2006·Journal of Medicinal Food·Min-Ho ChaYoosik Yoon
Feb 6, 2014·PloS One·Annette D RiegChristian Martin
Apr 6, 2005·World Journal of Gastroenterology : WJG·Xi-Ping ZhangYi-Feng Zhou

❮ Previous
Next ❯

Related Concepts

Related Feeds

Anaphylaxis

Anaphylaxis is a serious allergic reaction that is rapid in onset and may cause death.