title: [Epidermal aging and anti-aging strategies].
abstract: Epithelial senescence is a complex process depending on intrinsic as well as extrinsic factors (e.g., UV or IR light, tobacco smoke) and must be seen in the context of the aging process especially of the corium and the subcutis. Morphological alterations become apparent in the form of epithelial atrophy, structural changes within the basal membrane, and a decrease in cell count of melanocytes and Langerhans cells. Signs of cellular senescence are reduced proliferation of keratinocytes, cumulation of dysplastic keratinocytes, various mutations (e.g., c-Fos/c-Jun, STAT3, FoxO1), as well as multiple lipid or amino acid metabolic aberrations (e.g., production of advanced glycation endproducts). This causes functional changes within the physical (lipid deficiency, water distribution dysfunction, lack of hygroscopic substances), chemical (pH conditions, oxygen radicals), and immunological barrier. Prophylactically, barrier-protective care products, antioxidant substances (e.g., vitamin C, B3, E, polyphenols, flavonoids), sunscreen products/measurements, and retinoids are used. For correcting alterations in aged epidermis, chemical peelings (fruit acids, β-hydroxy acid, trichloroacetic acid, phenolic compounds), non-ablative (IPL, PDL, Nd:YAG) as well as ablative (CO2, Erbium-YAG) light-assisted methods are used.
authors.affiliation: Universitätsklinik und Poliklinik für Dermatologie und Venerologie, Martin-Luther-Universität Halle-Wittenberg, Ernst-Grube-Straße 40, 06097, Halle (Saale), Deutschland. johannes.wohlrab@medizin.uni-halle.de.|An-Institut für angewandte Dermatopharmazie, Martin-Luther-Universität Halle-Wittenberg, Halle (Saale), Deutschland. johannes.wohlrab@medizin.uni-halle.de.
authors.forename: J
authors.initials: J
authors.lastname: Wohlrab
authors.affiliation: Universitätsklinik und Poliklinik für Dermatologie und Venerologie, Martin-Luther-Universität Halle-Wittenberg, Ernst-Grube-Straße 40, 06097, Halle (Saale), Deutschland.
authors.forename: K
authors.initials: K
authors.lastname: Hilpert
authors.affiliation: Universitätsklinik und Poliklinik für Dermatologie und Venerologie, Martin-Luther-Universität Halle-Wittenberg, Ernst-Grube-Straße 40, 06097, Halle (Saale), Deutschland.
authors.forename: L
authors.initials: L
authors.lastname: Wolff
mesh_terms: D000375:Aging / Q000187:drug effects / Q000473:pathology / Q000502:physiology; D003879:Dermatologic Agents / Q000008:administration & dosage*; D004817:Epidermis / Q000187:drug effects* / Q000473:pathology / Q000502:physiology*; D019317:Evidence-Based Medicine; D005260:Female; D006801:Humans; D008297:Male; D012869:Skin Absorption / Q000187:drug effects / Q000502:physiology; D015595:Skin Aging / Q000187:drug effects* / Q000473:pathology / Q000502:physiology*
chemical_list: D003879:Dermatologic Agents
keywords: Epidermis; Geriatrics; Peeling; Senescence; Sunscreen