Department of Dermatology, University of California, San Francisco, CA, USA.
J Cutan Med Surg. 2013 Jan-Feb;17(1):6-12. doi: 10.2310/7750.2012.11124.
Phototherapy is one of the most efficacious treatment options for psoriasis. New, emerging studies are beginning to define the biologic mechanisms by which phototherapy improves psoriasis.
To provide an overview of the mechanisms thought to be responsible for the therapeutic effects of phototherapy, a review was performed on all relevant published studies in the Medline database from January 1, 1985, to August 15, 2011.
Four categories of action were proposed in the literature to describe the effects of phototherapy in psoriasis: (1) alteration of the cytokine profile, (2) induction of apoptosis, (3) promotion of immunosuppression, and (4) all other mechanisms.
Phototherapy acts through a combination of pathways to confer therapeutic benefits in psoriasis, and these different modalities may help explain its particular usefulness in treating this cutaneous disease.
光疗是治疗银屑病最有效的方法之一。新出现的研究开始确定光疗改善银屑病的生物学机制。
为了全面了解光疗治疗效果的潜在机制，对 1985 年 1 月 1 日至 2011 年 8 月 15 日 Medline 数据库中所有相关的已发表研究进行了综述。
文献中提出了四类作用机制来描述光疗对银屑病的影响：（1）细胞因子谱的改变，（2）诱导细胞凋亡，（3）促进免疫抑制，（4）其他所有机制。
光疗通过多种途径发挥作用，为银屑病带来治疗益处，这些不同的作用模式可能有助于解释其在治疗这种皮肤疾病方面的特殊作用。
