Simpson N B
Dermatology Department, Royal Infirmary, Glasgow, U.K.
Br J Dermatol. 1987 Jul;117(1):43-7. doi: 10.1111/j.1365-2133.1987.tb04089.x.
Sebum excretion rate was measured by a photometric technique. We demonstrated a high correlation between sebum excretion rates on the left and right sides of the upper back and between back and forehead skin. Sebum excretion rate measurements overlying an open comedone (blackhead) were significantly lower than those obtained from normal skin. This observation demonstrates a functional obstruction to the outflow of sebum and would suggest that the lack of involvement of open comedones in inflammatory acne is not because of the maintenance of a free flow of sebum.
皮脂分泌率采用光度测量技术进行测定。我们发现上背部左右两侧以及背部与额头皮肤的皮脂分泌率之间存在高度相关性。开放性粉刺（黑头）上方的皮脂分泌率测量值显著低于正常皮肤的测量值。这一观察结果表明皮脂流出存在功能性阻塞，并且提示开放性粉刺未参与炎性痤疮并非是由于皮脂保持自由流动。
