title: [Modification of relative amount of free amino acids in the stratum corneum of human epidermis by special factors of the environment. I. The influence of UV-irradiation (author's transl)].
abstract: By repeated uv-irradiation the quantity of all free amino acids (per surface unit) in human horny layer increase considerably. 4 different groups of substances are found by taking the relative values in mole per cent. 1. No difference for urea, threonine, serine, glutamine, tyrosine and ammonia. 2. Decrease of about 20 p.c. for glutaminic acid, citrulline, arginine, histidine. 3. Increase of about 20 p.c. for urocanic acid, aspartic acid, proline, glycine, valine, isoleucine. 4. The rest of amino acids increase about 30--50 p.c.
mesh_terms: D000596:Amino Acids / Q000378:metabolism* / Q000528:radiation effects; D004781:Environmental Exposure; D004817:Epidermis / Q000378:metabolism* / Q000528:radiation effects; D006801:Humans; D014466:Ultraviolet Rays
chemical_list: D000596:Amino Acids
vernacular_title: Zur Veränderung der relativen Konzentrationen der freien Aminosäuren im Stratum corneum menschlicher Epidermis durch gezielte Umwelteinflüsse. I. Der Einfluss von UV-Strahlung.