前列腺素E1透皮乳膏局部用药扩血管效应的实验研究

目的　探讨前列腺素E1 (PGE1 )透皮乳膏剂局部应用的扩血管效果 ,为临床开发理想的局部扩血管药物提供实验依据。方法　新西兰成年兔 60只 ,分为 6组 (每组 10只 ) :实验 1组 (含透皮剂的 0 .1%PGE1 乳膏组 ) ,实验 2组 (含透皮剂的 0 .2 %PGE1 乳膏组 ) ,实验 3组 (含透皮剂的 0 .4%PGE1 乳膏组 ) ,实验 4组 (含透皮剂的 0 .8%PGE1 乳膏组 ) ,不含透皮剂的 0 .4%PGE1 乳膏的药物对照组及空白对照组。全麻后 ,用 0 .1%盐酸肾上腺素注射于兔耳部制成血管痉挛模型 ,出现典型血管痉挛后于每只兔耳皮肤表面抹药。测量注射肾上腺素前、痉挛后 10min时及用药后 10 ,15 ,3 0 ,60 ,90和12 0min各时间点血管管径及血液灌流量的变化。结果　同一组内各时间段血管管径与血液灌流量成正比关系。实验 3 ,4组在用药 10min起血管管径及血液流量均已恢复注射肾素前的水平 ,且在各时间段的结果与实验 1,2组、药物对照组及空白对照组相比均有显著性差异 (P <0 .0 1) ,而第 3 ,4组间各时间段结果无显著性差异 (P >0 .0 5 )。结论　PGE1 在透皮剂作用下可透过皮肤有效缓解肾上腺素所致的血管痉挛 ,其扩血管效果与药物浓度成依赖关系。该药作为局部扩血管药物具有适应证广 ,显效快 ,副作用小 ,作用持久等特点 ,可能会成为一种

Experimental study of transcutaneous PGE1 cream for vascular spasm

Objective To study the efficacy of transcutaneous prostaglandin E 1( PGE 1) cream in relaxing the vascular spasm in rabbits, to find an ideal vascular dilation drug. Methods Sixty rabbits were randomly divided into six groups:experiment group 1(using 0.1% transcutaneous PGE 1 cream),experiment group 2(using 0.2% transcutaneous PGE 1 cream),experiment group 3(using 0.4% transcutaneous PGE 1 cream), experiment group 4( using 0.8% transcutaneous PGE 1 cream),PGE 1 control group (without using transcutaneous PGE 1 cream, but using PGE 1 cream only),control group(withous using PGE 1). 0.1% adrenlin was injected to the root of the rabbite ear to induce a model of vascular spasm. After a typical vascular spasm appeared,transcutaneou PGE 1 cream or PGE 1 cream was used on the skin of the ear. The vascular diameter and blood folw rate of the ear were determined before adrenalin injection, 10min after vascular spasm and 10,15,30,60,90 and 120 min after the drugs were used. Results The vascular diameters and blood flow rate were recovered to the levels of before adrenalin injection in experimental group 3, 4 after topical used of transcutaneous PGE 1 cream, and those parameters were significamly increased compared with other 4 groups(P<0.01) ,but those parameters were no obviously difference between experiment group 3 and 4 (P>0.05). Conclusions Tramscutameou PGE 1 cream can effectively relax the vascular spasm caused be adrenalin injection.The effect of vascular dilation is related to the dosage of the drug. Transcutaneous PGE 1 cream as a topical vascular dilation drug has advantages snch as wide indications,taking effect quick and enduring, and less side effect. So it might be a new simple, safe and effective drug for the treatment of vascular spasm.