目的观察水蛭提取液对视网膜色素上皮细胞(retinal pigment epithelium,RPE)内游离钙离子(Intracellular liber calcium ion,[Ca^2+]i)浓度的影响。方法利用体外培养的视网膜色素上皮细胞,采用双波长荧光分光光度计测量法测定视网膜色素上皮细胞内[Ca^2+]i浓度。结果空白组(A)133.4517±13.17789、凝血酶组(A1)192.2037±4.54292、水蛭组(A2)96.9935±8.80148、水蛭和凝血酶同时加组(A3)142.0867±26.47195、先加水蛭后加凝血酶组(A4)162.7284±29.13950、先加凝血酶后加水蛭组(A5)130.4810±20.48673。结论水蛭提取液能使RPE细胞内游离Ca^2+浓度下降,为进一步深入研究水蛭提取液抑制RPE细胞增殖的作用机制,防治增生性玻璃体视网膜病变(proliferative vitreoretinopathy。PVR)提供了实验室依据。
OBJECTIVE To observe effect of percolation leech extract on intracellular liber calcium ion [Ca^2+ ] i of retinal pigment epithelium (RPE) cultured in vitro.METHODS Use retinal pigment epithelium (RPE) culture in vitro, to observe effect of leech extract on retinal pigment epithelium (RPE) [Ca^2+] i.RESULTS One hundred and twenty- eight mg/ml leech extract can reduce [ Ca^2+ ] i of retinal pigment epithelium (RPE) cultured in vitro.CONCLUSIONS Leech extract can reduce [ Ca^2+ ] i of retinal pigment epithelium (RPE) cultured in vitro to provide experimental evidence for drug treatment on proliferative vitreoretinopathy (PVR) .