[Peptide-bound oxyproline content in patients with nail hyperkeratosis and lactic acidosis].

The studies indicate that women with dystrophic changes of the nail in the presence of various skin diseases show a significant blood accumulation of acid products (peptide-bound oxyproline (PO) and lactic acid (LA). A relationship was found between the magnitude of a dystrophic process (hyperkeratosis) and higher blood LA levels with lower PO values that fail to achieve the level observed in the control group.