藏药镰形棘豆药效学实验研究

目的:通过对藏药镰形棘豆的抗炎镇痛实验研究,探讨该药的药效学作用,为临床提供依据。方法:采用鸡蛋清致炎法、二甲苯致耳肿胀法观察藏药镰形棘豆的抗炎作用;采用扭体法观察藏药镰形棘豆的镇痛作用。结果:镰形棘豆对鸡蛋清所致的大鼠足趾肿胀、对二甲苯所致的小鼠耳肿胀均有明显的抑制作用;并能减少醋酸致痛小鼠的扭体次数。结论:镰形棘豆具有较好的抗炎和镇痛作用。

藏药镰形棘豆水提取物对脓毒症大鼠细胞因子水平的影响

目的:探讨镰形棘豆水提取物(EOF)对脓毒症大鼠血清细胞因子水平的影响。方法:采用盲肠结扎穿孔术(CLP)制备动物脓毒症模型,将雄性SD大鼠随机分为5组,正常对照组(6只)、假手术组(24只)、模型组(24只)、EOF低、高剂量组(0.5,2 g.kg-1,24只),于造模后灌服1次。于造模后2,6,12,24 h取大鼠动脉血,采用ELISA测定血清肿瘤坏死因子-α(TNF-α),白细胞介素-6(IL-6),白细胞介素-1(IL-1)水平。结果:相同时间点模型组TNF-α,IL-6,IL-10的水平均高于假手术组(P<0.01);EOF治疗组与模型组相比(除2 h外),TNF-α,IL-6的水平各时间点降低(P<0.05),IL-10的水平升高(P<0.05);EOF高剂量与EOF低剂量相比(除2 h外),TNF-α,IL-6水平各时间点降低更明显(P<0.05),IL-10的水平各时间点升高更明显(P<0.05)。结论:EOF能下调脓毒症大鼠TNF-α,IL-6的水平,上调IL-10的水平;EOF具有抗炎和免疫调节作用,有进一步开发为临床治疗脓毒症新药的潜在可能性。

Flavonoids from Tibetan medicine Oxytropis falcate Bunge

Twenty-seven flavonoids, including 10 isoflavones, 9 flavanones, 3 dihydrochalcones, 3 flavonols and 2 flavans, were isolated from the whole plant of Tibetan medicine Oxytropis falcate Bunge. Structure elucidation was conducted by extensive spectroscopic analysis, including MS, NMR and CD spectra. Twelve compounds were obtained from this plant for the first time, among which 10 compounds were obtained from the genus of Oxytropis for the first time.