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试论"知母坚阴护卫"

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知母为经典清热泻火药,其在苦寒之性泻火存阴的基础上能甘寒滋阴,具有直接的泻火坚阴之效.卫气出于下焦而实上焦,根源于肾,经肺充实布散.知母兼具清肺中实热、滋肾中阴液之效,在减少损耗的同时,能使卫气化生有源,故有顾护卫气之功效.伏燥在内,耗伤肺肾阴津,致卫气化源不足、卫外失司,若遇外感引动,则相兼发病.其在体内有燥重为寒、化气为湿、复气为火的病机转化过程.知母在清热的同时兼滋养下焦之阴,能清润伏燥之时,充实卫气化生之源,发挥坚阴护卫之功,以有效截断伏燥外感病情的传变.这一独特应用价值在经典的中成药金花清感颗粒和银翘清热片中得到了充分体现.
Discussion on"common anemarrhena rhizome strengthening yin and protecting defensive qi"
Common anemarrhena rhizome is a classic herb for clearing heat fire,which can nourish yin owing to its sweet-cold nature on the basis of clearing fire to conserve yin due to its bitter-cold nature,delivering the direct effect of purging fire and strengthening yin.Defensive qi originates from the lower jiao while functions to invigorate the upper jiao,with its root lying in the kidney,while enriched and distributed through the lung.Common anemarrhena rhizome has the effect of both clearing excessive heat in the lung and nourishing yin fluids in the kidney.While reducing the consumption of yin fluids,it can also promote the transformation and generation of defensive qi in the body,thus having the effect of nourishing it.As dryness lurks inside the body,it may deplete and damage yin fluids in the lung and kidney,resulting in insufficient transformation of defensive qi and its dysfunction in defending against external pathogens.If triggered by external pathogenic factors,latent dryness can induce diseases,which undergoes such pathogenesis transformation processes as intense dryness turning into cold,dryness turning into qi as dampness,and restricted qi turning into fire.Common anemarrhena rhizome can nourish yin in the lower jiao as it clears heat,replenish the transformation source of defensive qi as it removes and moistens latent dryness,playing the part of strengthening yin and protecting defensive qi.And in this way,the herb can effectively cut off the transmission of diseases induced by latent dryness and external pathogens.The unique action of common anemarrhena rhizome is fully reflected in the classic Chinese patent medicines such as Jinhua Qinggan Granules and Yinqiao Qingre Tablets.

common anemarrhena rhizomestrengthening yin and protecting defensive qilatent dryness

吴圣贤、石乃欣、王永炎

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北京中医药大学东直门医院,北京 100700

中国中医科学院,北京 100700

知母 坚阴护卫 伏燥

国家自然科学基金项目

82174340

2024

吉林中医药
长春中医药大学

吉林中医药

CSTPCD
影响因子:0.843
ISSN:1003-5699
年,卷(期):2024.44(10)