Experimental Study of Active Fraction B of Guizhi Tang(Cinnamon TwigDecoction)on Dual-Direction Regulation of Gastrointestinal Motility Ⅵ:Effect on cAMP,Protein Kinase A and Protein Kinase C
HUO Hai-ru, TAN Yu-qing, ZHOU Ai-xiang, et al. Experimental Study of Active Fraction B of Guizhi Tang(Cinnamon TwigDecoction)on Dual-Direction Regulation of Gastrointestinal Motility Ⅵ:Effect on cAMP,Protein Kinase A and Protein Kinase C[J]. Chinese journal of experimental traditional medical formulae, 2005, (4): 51-54.
HUO Hai-ru, TAN Yu-qing, ZHOU Ai-xiang, et al. Experimental Study of Active Fraction B of Guizhi Tang(Cinnamon TwigDecoction)on Dual-Direction Regulation of Gastrointestinal Motility Ⅵ:Effect on cAMP,Protein Kinase A and Protein Kinase C[J]. Chinese journal of experimental traditional medical formulae, 2005, (4): 51-54. DOI: 10.13422/j.cnki.syfjx.2005.04.021.
Objective:To investigate the effective mechanism of dual-direction regulation of Fr.B
an active fraction extracted from Guizhi Tang(GZT).on gastrointestinal motility.Methods:The cAMP content
protein kinase A(PKA)and C(PKC)activity of hypothalamus and gastrointestinal tissues in rats with excited or inhibited gastrointestinal motility induced respectively by neostigmine or atropine were measured via radioimmunoassay.Results:Fr.B increased the cAMP content and PKA and PKC activity of hypothalamus and jejunum in rats with inhibited gastrointestinal motility significantly
and antagonized the decrease of PKA activity of gastric antrum.In rats with excited gastrointestinal motility
Fr.B increased PKA activity of gastric antrum
PKC activity of hypothalamus and jejunum
and did not affect the cAMP content.Conclusion:Fr.B could affect the cAMP content
PKA and C activity in hypothalamus and gastrointestinal tissues to regulate gastrointestinal motility in a dual-direction manner.