期刊
CONTACT DERMATITIS
卷 59, 期 4, 页码 212-219出版社
WILEY
DOI: 10.1111/j.1600-0536.2008.01365.x
关键词
allergic contact dermatitis; CC-chemokine receptor-1 antagonist; chemokines
资金
- Pfizer, Inc
Background: The CC-chemokine receptor-1 (CCR1) is thought to be involved in recruitment of inflammatory cells in allergic contact dermatitis (ACD). CP-481715 is a specific antagonist of CCR1. Objective: To determine the inhibitory effects of CP-418 715 in ACD by evaluating the clinical signs and cellular infiltration in skin biopsies following epicutaneous nickel challenge in allergic subjects. Subjects/Methods: In this phase 1/2 study, 40 subjects were randomized to 5 days of treatment in four parallel groups (placebo three times daily (TID), placebo once daily (QD), 1000 mg CP-418 715 TID, and 3000 mg CP-418 715 QD). Twenty-four hours after the first drug administration, nickel sulfate patches were applied on subjects' backs and removed 48 hours later. Results: Pretreatment with 1000 mg CP-481715 TID resulted in significant reductions in visual scores of the nickel reactions (P = 0.01). Instrumentally measured erythema tended to decrease in the CP-481715 mg TID group (P = 0.06). No differences were noted between the 3000 mg CP-481715 mg QD group and pooled placebo. No significant differences were found for immunohistological cell counts. CP-418 715 was generally safe and well tolerated. Conclusions: Blocking of CCR1 only partly inhibited clinical manifestations of ACD. Several chemokine receptors are likely relevant for the cellular influx observed in ACD lesions.
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