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1. 延边大学中医学院临床基础教研室
2. 延边大学基础医学院生理学教研室
纸质出版日期:2013
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[1]崔昊震,刘丽萍.远志水提取物对家兔心肌收缩力及心房尿钠肽分泌的影响[J].中国实验方剂学杂志,2013,19(09):256-259.
CUI Hao-zhen1, LIU Li-ping2. Aqueous Extract of Polygala tenuifolia Willd on Atrial Dynamics and ANP Secretion in Beating Rabbit Atria[J]. Chinese journal of experimental traditional medical formulae, 2013, 19(9): 256-259.
[1]崔昊震,刘丽萍.远志水提取物对家兔心肌收缩力及心房尿钠肽分泌的影响[J].中国实验方剂学杂志,2013,19(09):256-259. DOI:
CUI Hao-zhen1, LIU Li-ping2. Aqueous Extract of Polygala tenuifolia Willd on Atrial Dynamics and ANP Secretion in Beating Rabbit Atria[J]. Chinese journal of experimental traditional medical formulae, 2013, 19(9): 256-259. DOI:
目的:观察远志水提取物对家兔心肌收缩力及心房尿钠肽分泌的影响。方法:采用家兔离体搏动心房灌流模型
观察远志水提取物对家兔心肌收缩力及心房尿钠肽分泌的影响。环磷酸腺苷(cAMP)和心房尿钠肽(ANP)含量的测定均采用放射免疫法。结果:远志水提取物可使家兔的心房每回搏出量、搏动压和灌流液中cAMP流出量比给药前呈现剂量依赖性递增趋势(P<0.05)。同时
它还可以明显地抑制ANP的分泌(P<0.01)。在阻断β-肾上腺素受体(β-adrenorecptor
β-AR)及选择性阻断β1-AR时能显著抑制远志水提取物对心肌收缩力的增强作用(P<0.05);而选择性阻断β2-AR时却无任何影响。此外
阻断L-型Ca2+通道及选择性抑制蛋白激酶A(PKA)的活性能明显抑制远志水提物对心肌收缩力的增强作用(P<0.05)。结论:远志水提取物主要通过影响β1-AR-cAMP-Ca2+信号传导途径增强心肌收缩力
并对ANP分泌具有抑制作用。
Objective:To investigate the effect of aqueous extract of Polygala tenuifolia(APT) on myocardial contractility and atrial natriuretic peptide(ANP) secretion in beating rabbit atria.Method: The APT-induced changes in atrial dynamics
cAMP efflux and ANP secretion were determined in perfused beating rabbit atria.The changes of cAMP and ANP were measured by radioimmunoassay.Result: APT increased atrial stroke volume
pulse pressure and cAMP efflux in a concentration-dependent manner with inhibition of ANP secretion in beating rabbit atria.The APT-induced positive inotropic effect was significantly blocked by pretreatment with blockade of β and β1-adrenoceptors(AR)(P<0.05) but not β2-AR.Furthermore
the APT-induced changes in myocardial contractility were attenuated by inhibition of L-type Ca2+channel and protein kinase A(PKA) activation with no changes in cAMP efflux.Conclusion: APT could increase atrial dynamics via β1-AR-cAMP-Ca2+signaling and decreases ANP secretion in beating rabbit atria.
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