藏药结血蒿水提物的免疫抑制作用研究

目的研究结血蒿水提取物（AV-ext）对小鼠免疫反应的抑制作用。方法运用淋巴细胞增殖反应、混合淋巴细胞反应观察AV-ext体外应用和口服给药对小鼠脾细胞增殖的影响；运用小鼠脾细胞增殖试验，观察AV-ext体外应用对小鼠活化脾细胞分泌IL-2的影响；用明胶酶谱法和粘附分析法，观察AV-ext对小鼠活化T淋巴细胞移动和粘附能力的影响。结果AV-ext在1μg／mL-100μg／mL剂量范围内对脾细胞无明显的细胞毒性，但对刀豆蛋白A（ConA）诱导的小鼠脾细胞增殖反应、混合淋巴细胞反应具有明显的抑制作用，对小鼠活化脾细胞分泌IL-2、小鼠活化T淋巴细胞分泌基质金属蛋白酶9（MMP-9）及粘附能力有显著的抑制作用；连续7d每日口服给予150mg／kg和300mg／kg的AV-ext，能明显抑制小鼠脾细胞增殖及活化脾细胞分泌MMP-9。结论AV-ext能显著抑制小鼠的细胞免疫反应。

Immunosuppressive Effect of Tibetan Medicine, Artemisia vestita Wall Extract

OBJECTIVE: To assess the immunosuppressive effect of Artemisia vestita Wall Extract (AV-ext) on mice. METHODS: The proliferative reaction of lymphocyte and the mixed lymphocytes reaction were used to determine the effects of AV-ext on the proliferation of mouse splenocyte in vitro and in vivo; Proliferative reaction of mouse splenocyte was used for detecting the effects of AV-ext on the level of IL-2 secreted by mouse activated splenocyte in vitro. Gelatin enzymogram method and adherence analytical method were employed to disclose the effects of AV-ext on mouse activated T-lymphocytes mobility and adherence. RESULTS: 1-100 microg/mL AV-ext exerted no obvious toxicity to mouse splenocyte, but it had obvious inhibitory effect on proliferative reaction of mouse splenocyte and mixed lymphocytes reaction induced by ConA. It also had obvious inhibitory effect on the level of IL-2 secreted by mouse activated splenocyte, on the production of MMP-9 by mouse activated T-lymphocytes, and on adherence. 150 mg/kg and 300 mg/kg of AV-ext, given to mouse per os for 7 days, could inhibit the proliferation of splenocyte and the secretion of MMP-9 by activated splenocyte of mouse. CONCLUSION: AV-ext can inhibit the cellular immune reaction of mouse obviously.