“…DS-Nh mice (Gly573 mutated to Ser) and WBN/Kob-Ht rats (Gly573 mutated to Cys) are spontaneous hairless mutant strains in rodents that develop AD-like dermatitis under normal conditions, but not under specific pathogen-free conditions (Asakawa et al, 2006;Yoshioka et al, 2009). In rodents, spontaneous dermatitis conditions share very similar characteristics that include the following (Asakawa et al, 2006;Imura et al, 2007): 1) Staphylococcus aureus can be isolated from skin lesions, 2) levels of serum interleukin-4 and IgE are increased significantly, 3) CD4-bearing T cells and whole mast cells are increased significantly, and 4) hyperkeratosis is observed in skin lesions with dermatitis. In DS-Nh mice expressing an overactive TRPV3 mutant, expression of thymic stromal lymphopoietin, a pruritogen, is increased in keratinocytes (Wilson et al, 2013;Yamamoto-Kasai et al, 2013), indicating that TRPV3 is a dendritic cell modulator that plays a critical role in the development of allergic dermatitis.…”