TSLP and Alzheimer disease: In mice, epidermal TSLP production can be induced by topical application of 1,25-dihydroxy-vitamin D3 (VD3) and its synthetic analogue calcipotriol (or MC903), resulting in an AD-like phenotype characterized by eczematous lesions with xerosis and pruritis, skin infiltrates of CD4+ Th2 T cells, DC, eosinophils and mast cells.