玄参是滋阴凉血的重要药材。但是迄今未见有对其滋阴作用的药理研究。滋阴作用的物质基础尚不明确。临床报道 ,阴虚患者的免疫功能低下[1,2 ] ,血浆ｃＡＭＰ升高、ｃＡＭＰ/ｃＧＭＰ的值升高[3 ,4 ] ,经养阴治疗可获得明显改善[5] 。为探索玄参滋阴作用的物质基础 ,我们考察玄 Scrophulariaceae is an important medicinal material for nourishing yin and cooling blood. However, no pharmacological study on its nourishing effect has been found so far. The material basis of nourishing Yin is not yet clear. Clinical reports, yin deficiency of patients with low immune function [1,2], elevated plasma cAMP, cAMP / cGMP value increased [3,4], by the treatment of Yin can be significantly improved [5]. In order to explore the material basis of Scrophulariaceae’s nourishing effect, we examine