【摘要】 目的研究芦荟粗多糖对体外培养人表皮细胞增殖活性、细胞内Ca2+水平及细胞LDH漏出率的影响。方法应用不同浓度(75,150,300,600,1 200 mg.L-1)芦荟粗多糖作用于表皮细胞,观察计算生长曲线和细胞增殖指数,并测定细胞内Ca2+水平和LDH漏出率。结果芦荟粗多糖组表皮细胞培养2 d后增殖速度明显增快,d 3~5细胞增殖指数呈剂量依赖性上升。与对照组比较,600和1 200 mg.L-1芦荟粗多糖组表皮细胞内Ca2+水平升高(P<0.05),而这两组LDH漏出率则下降(P<0.05)。结论芦荟粗多糖具有促进体外表皮细胞增殖和保护表皮细胞的作用,并可能通过调节细胞内Ca2+来发挥其促进细胞增殖作用。更多还原

【Abstract】 Aim To investigate the effects of aloe coarse polysaccharid on proliferation and the intracellular calcium level and the leakage rate of lactate dehydrogen-ase(LDH) of the epidermal cellsin vitro.Methods The epidermal cells were treated with aloe coarse po-lysaccharid of75,150,300,600 and 1 200 mg.L-1respectively.The proliferation of epidermal cells wasobserved interms of the proliferation curve and the pop-ulation doubling/day(PD/d).The concentration ofintracellular calcium and the leakage rate of LDHwerealso measured.Results In aloe coarse polysaccharidgroup,a dose-dependent and statistically significant(P<0.05 ~0.01) promotion of epidermal cells prolif-eration was observed after 3,4 and 5 days of incuba-tion.Compared with the control group,the levels ofintracellular calcium were significantly increased andthe leakage rate of LDHwas markedly decreased in thetreatment group treated with 600 and 1 200 mg.L-1of aloe coarse polysaccharid(P<0.05).Conclusion Aloe coarse polysaccharid may have protective effectand regulate intracellular calcium which results in theproliferation of the epidermal cells.更多还原