Gottlieb A B, Luster A D, Posnett D N, Carter D M
Laboratory of Immunology, Rockefeller University, New York.
J Exp Med. 1988 Sep 1;168(3):941-8. doi: 10.1084/jem.168.3.941.
The pathologic features of psoriatic plaques are inflammation and increased epidermal turnover. IP-10, a cytokine the expression of which is induced by gamma-interferon, is a member of a family of soluble mediators with inflammatory and growth-promoting activities. IP-10 protein was detected in keratinocytes and the dermal infiltrate from active psoriatic plaques using an affinity-purified rabbit anti-IP-10 antibody in immunoperoxidase studies. Successful treatment of active plaques decreased IP-10 expression in plaques. These results were corroborated by Northern blot analysis with an IP-10 cDNA probe. We have previously detected activated T cells and HLA-DR keratinocytes in active psoriatic plaques. Since IP-10 is detected in delayed cellular immune responses, the present study further points to the role of ongoing cellular immune responses in the pathogenesis of psoriasis.
银屑病斑块的病理特征为炎症和表皮更替增加。IP-10是一种由γ干扰素诱导表达的细胞因子,属于具有炎症和促生长活性的可溶性介质家族成员。在免疫过氧化物酶研究中,使用亲和纯化的兔抗IP-10抗体在活性银屑病斑块的角质形成细胞和真皮浸润物中检测到了IP-10蛋白。活性斑块的成功治疗降低了斑块中IP-10的表达。用IP-10 cDNA探针进行的Northern印迹分析证实了这些结果。我们之前在活性银屑病斑块中检测到了活化的T细胞和HLA-DR角质形成细胞。由于在迟发型细胞免疫反应中检测到了IP-10,本研究进一步指出持续的细胞免疫反应在银屑病发病机制中的作用。