SnapshotDx Quiz: February 2018

January 2018 in “ Journal of Investigative Dermatology ”

Stephanie Florez-Pollack, Benjamin F. Chong

TLDR Blocking certain pathways with kinase inhibitors may help treat cutaneous lupus erythematosus.

The document discussed a case of a 30-year-old female with alopecia diagnosed as discoid lupus erythematosus (DLE), characterized by erythematous annular plaques with scarring alopecia and follicular plugging on the scalp. DLE was identified as the most common subtype of cutaneous lupus erythematosus (CLE), with lesions typically appearing as disk-shaped erythematous to violaceous plaques. The study highlighted that lesional inflammation in CLE was associated with the expression of type I interferons and their inducible proteins, such as CXCL9/CXCL10. It also explored the role of keratinocytes in the inflammatory response, noting that they produce IFN-regulated cytokines in response to endogenous nucleic acids, driving the recruitment of CXCR3+ cytotoxic immune cells. The document emphasized the importance of understanding these mechanisms for potential therapeutic targets.

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