title: Regulation of collagen biosynthesis by ascorbic acid: a review.
abstract: L-ascorbic acid is an essential cofactor for lysyl hydroxylase and prolyl hydroxylase, enzymes essential for collagen biosynthesis. In addition, L-ascorbic acid preferentially stimulates collagen synthesis in a manner which appears unrelated to the effect of L-ascorbic acid on hydroxylation reactions. This reaction is stereospecific and unrelated to intracellular degradation of collagen. The effect apparently occurs at a transcriptional or translational level, since L-ascorbic acid preferentially stimulates collagen-specific mRNA. In addition, it stimulates lysyl hydroxylase activity but inhibits prolyl hydroxylase activity in human skin fibroblasts in culture.
mesh_terms: D001205:Ascorbic Acid / Q000031:analogs & derivatives / Q000494:pharmacology*; D002478:Cells, Cultured; D003094:Collagen / Q000096:biosynthesis* / Q000378:metabolism; D005347:Fibroblasts / Q000187:drug effects / Q000378:metabolism; D006801:Humans; D006901:Hydroxylysine / Q000096:biosynthesis; D006909:Hydroxyproline / Q000096:biosynthesis; D007700:Kinetics; D008240:Procollagen-Lysine, 2-Oxoglutarate 5-Dioxygenase / Q000378:metabolism; D011393:Procollagen-Proline Dioxygenase / Q000378:metabolism; D012867:Skin / Q000187:drug effects / Q000378:metabolism*
chemical_list: D006901:Hydroxylysine; D003094:Collagen; D011393:Procollagen-Proline Dioxygenase; D008240:Procollagen-Lysine, 2-Oxoglutarate 5-Dioxygenase; D001205:Ascorbic Acid; D006909:Hydroxyproline