Methods Radioimmunoassay was used to detect the fasting plasma neuropeptide Y ( NPY ) and Leptin ( LE ) in 26 healthy control subjects and hypertensive patients 1 grade ( n42 ), 2 grade ( n46 ) and 3 grade ( n28 ) .
方法采用放免分析法测定26例健康对照者和原发性高血压1级42例、2级46例及3级28例患者的空腹血浆瘦素（LE）及神经肽Y（NPY）浓度。
n28