title: Update on ultraviolet A and B radiation generated by the sun and artificial lamps and their effects on skin.
abstract: Solar radiation, especially ultraviolet A (UVA) and ultraviolet B (UVB), can cause damage to the human body, and exposure to the radiation may vary according to the geographical location, time of year and other factors. The effects of UVA and UVB radiation on organisms range from erythema formation, through tanning and reduced synthesis of macromolecules such as collagen and elastin, to carcinogenic DNA mutations. Some studies suggest that, in addition to the radiation emitted by the sun, artificial sources of radiation, such as commercial lamps, can also generate small amounts of UVA and UVB radiation. Depending on the source intensity and on the distance from the source, this radiation can be harmful to photosensitive individuals. In healthy subjects, the evidence on the danger of this radiation is still far from conclusive.
authors.affiliation: Department of Clinical Pathology, Faculty of Medical Sciences, University of Campinas (Unicamp), Campinas, Brazil.
authors.forename: R C
authors.initials: RC
authors.lastname: Romanhole
authors.affiliation: Department of Clinical Pathology, Faculty of Medical Sciences, University of Campinas (Unicamp), Campinas, Brazil.
authors.forename: J A
authors.initials: JA
authors.lastname: Ataide
authors.affiliation: Department of Clinical Pathology, Faculty of Medical Sciences, University of Campinas (Unicamp), Campinas, Brazil.|Faculty of Pharmaceutical Sciences, University of Campinas (Unicamp), Campinas, Brazil.
authors.forename: P
authors.initials: P
authors.lastname: Moriel
authors.affiliation: Department of Clinical Pathology, Faculty of Medical Sciences, University of Campinas (Unicamp), Campinas, Brazil.|Faculty of Pharmaceutical Sciences, University of Campinas (Unicamp), Campinas, Brazil.
authors.forename: P G
authors.initials: PG
authors.lastname: Mazzola
mesh_terms: D006801:Humans; D008029:Lighting; D012867:Skin / Q000528:radiation effects*; D013472:Sunlight; D014466:Ultraviolet Rays
keywords: effects of ultraviolet radiation on skin; photoageing; photodamage; ultraviolet light; visible light