目的:探讨广州地区正常人紫外线最小红斑量(minimal erythema does,MED)的范围及其与性别的关系.方法:以GS2004型日光紫外模拟系统为光源,测定330名健康志愿者背部正常皮肤的MED值.结果:330名受试者的MED均值为(1176.1±322.90)mJ/cm2,男性MED均值为(1132.8±339.38)mJ/cm2,女性MED均值为(1212.2±304.76)mJ/cm2,两者之间无统计学差异(P=0.12)； Ⅱ型皮肤男性MED值显著低于女性(P=0.02)；大于30岁男性MED值显著低于女性(P＜0.05).结论:广州地区正常人紫外线MED值范围与中国其他地区正常人MED值有一定差异,其与性别关系不能笼统地分析,必须考虑年龄及皮肤光生物学分型的影响.%Objective To investigate the minimal erythema does (MED) of normal skin to UV in Guangzhou city, and observe its relationship to sex. Methods 330 healthy subjects were exposed to Solar Simulator (GS2004), and the MED was measured. Results The average MED value of all subjects was (1176.1 ±322.90) mJ/cm2. In male and female group, the average MED value were (1132.8±339.38) mJ/cm2 and (1212.2±304.76)mJ/cm2 respectively, and there was no significant difference between male and female (P =0.12). However, the male MED value in skin type II was significantly lower than those in female (P=0.02) ,and the male MED value in subjects aged over 30 was significantly lower than those in female (P<0.05). Conclusion The MED value of the subjects in Guangzhou was quite different from other cities according to the previous reports and related to gender while considering the skin types and age.
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