title: Sun exposure: what molecular photodermatology tells us about its good and bad sides.
abstract: The health consequences of sun exposure have concerned mankind for more than 100 years. Recent molecular studies in photodermatology have greatly advanced our understanding of this important topic. We will illustrate this progress by focusing on the following selected topics: (i) the nature of the DNA damage-independent part of the UVB response of human skin and the role of the arylhydrocarbon receptor in cutaneous biology, (ii) the contribution of wavelengths beyond the UV spectrum to solar radiation-induced skin damage, (iii) the emerging evidence that subcutaneous fat is a target tissue for sunlight, and (iv) the most recent insight into the mode of action of phototherapy.
authors.affiliation: IUF-Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany. krutmann@rz.uni-duesseldorf.de
authors.forename: Jean
authors.initials: J
authors.lastname: Krutmann
authors.forename: Akimichi
authors.initials: A
authors.lastname: Morita
authors.forename: Jin Ho
authors.initials: JH
authors.lastname: Chung
mesh_terms: D004249:DNA Damage / Q000502:physiology; D006801:Humans; D010789:Phototherapy / Q000639:trends*; D012867:Skin / Q000378:metabolism / Q000528:radiation effects*; D015595:Skin Aging / Q000502:physiology*; D013472:Sunlight / Q000009:adverse effects*; D014807:Vitamin D / Q000096:biosynthesis*
chemical_list: D014807:Vitamin D