中华皮肤科杂志 ›› 2012, Vol. 45 ›› Issue (4): 263-265.

• 论著 • 上一篇    下一篇

银屑病素在光线性角化病、Bowen病及皮肤鳞状细胞癌组织中的表达及意义

徐磊1,曾维惠2,2,郑焱3   

  1. 1. 成都市第二人民医院皮肤科
    2.
    3. 西安交通大学第二附属医院皮肤科
  • 收稿日期:2011-08-17 修回日期:2011-10-14 出版日期:2012-04-15 发布日期:2012-03-30
  • 通讯作者: 郑焱 E-mail:zhengyanxjtu@163.com
  • 基金资助:

    国家自然科学基金;教育部留学回国人员科研启动基金

Expression of psoriasin in actinic keratosis, Bowen′s disease and squamous cell carcinoma and its significance

  • Received:2011-08-17 Revised:2011-10-14 Online:2012-04-15 Published:2012-03-30

摘要:

目的 研究银屑病素在光线性角化病、Bowen病及皮肤鳞状细胞癌(鳞癌)中的表达。方法 用免疫组化的方法检测18例正常皮肤组织、20例光线性角化病、25例Bowen病、21例高分化皮肤鳞癌及16例低分化鳞癌皮损中银屑病素的表达。结果 银屑病素在正常皮肤组织中表达阳性率为11.1%。在光线性角化病中19例银屑病素表达于角质层至棘层上1 ~ 3层,胞质着色,阳性率为95.0%。在Bowen病中22例银屑病素表达于表皮全层角质形成细胞,胞质着色,空泡状细胞包膜及胞质着色,阳性率为88%。在高分化鳞癌中20例银屑病素表达于角质层至棘层全层,角化珠及角化不良细胞着色,阳性率为95.2%;在低分化鳞癌中13例银屑病素表达于角质层至棘层上1 ~ 5层,低分化的鳞状细胞不着色,阳性率为92.3%。与正常皮肤组相比,银屑病素在光线性角化病、Bowen病、高分化鳞癌和低分化鳞癌中的表达差异均有统计学意义(P < 0.01)。银屑病素在光线性角化病、Bowen病、高分化鳞癌中表达强度逐渐升高,而在低分化鳞癌中表达强度降低,但仍高于正常皮肤组织(P < 0.05)。结论 银屑病素在鳞状细胞分化异常的皮肤病中表达异常。

关键词: 银屑病素

Abstract:

Objective To investigate the expression of psoriasin in actinic keratosis (AK), Bowen′s disease and squamous cell carcinoma (SCC) tissues. Methods Immunohistochemistry was carried out to quantify the expression of psoriasin protein in tissue specimens from the lesions of 20 patients with AK, 25 patients with Bowen′s disease, 21 patients with well differentiated SCC, and 16 patients with poorly differentiated SCC, as well as from the skin of 18 normal human controls. Results The expression rate of psoriasin was 11.1% in the control specimens, significantly different from that in the AK (95.0%), Bowen′s disease (88.0%), well differentiated SCC (95.2%), and poorly differentiated SCC (92.3%) specimens (all P < 0.01). Psoriasin was expressed in the cytoplasm of keratinocytes and dyskeratotic keratinocytes in stratum corneum and upper 1 to 3 layers of stratum spinosums in AK tissue, in the cytoplasm of keratinocytes as well as the membrane and cytoplasm of vacuolated cells in all layers of the epidermis in Bowen′s disease tissue. In well differentiated SCC, cornified pearl and dyskeratotic keratinocytes located in the stratum corneum and all layers of the stratum spinosums stained positive for psoriasin, and in poorly differentiated SCC, psoriasin was distributed in the stratum corneum and upper 1 to 5 layers of the stratum spinosums, but absent in poorly differentiated squamous cells. The expression intensity of psoriasin in tissues sequentially increased from AK, Bowen′s disease to well differentiated SCC. Though the expression intensity of psoriasin in poorly differentiated SCC decreased, but was still higher than that in normal skin tissue (P < 0.05). Conclusion Psoriasin is abnormally expressed in skin disorders with dysdifferentiation of squamous cells.

Key words: psoriasin