title: Ultraviolet light- and ozone-induced changes in pyridinoline, a trisubstituted 3-hydroxypyridinium crosslink of collagen.
abstract: Pyridinoline photo-degraded with the formation of photoproducts absorbing diffusely around 260-290 nm (pH 7) and sharply at 232 nm (pH 1). Subsequent heating partially regenerated the original pyridinoline, also producing new products absorbing at 417/440 nm (pH 7) and 300/412 nm (pH 1). Pyridinoline (pH 7) and its new products (pH 7 and pH 1) also underwent ozone-induced degradation.
mesh_terms: D000596:Amino Acids / Q000032:analysis*; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D010126:Ozone / Q000494:pharmacology*; D013056:Spectrophotometry, Ultraviolet; D014466:Ultraviolet Rays
chemical_list: D000596:Amino Acids; C015484:pyridinoline; D010126:Ozone