Automation of urine hydroxyproline assay after isolation hydrolysis of hypropeptides on ion exchange resin
Dakkak, R.; Dreux, C.
Annales de Biologie Clinique 34(3): 197-202
1976
ISSN/ISBN: 0003-3898 PMID: 984526 Document Number: 102331
Urinary hydroxyproline is mainly in the form of oligopeptide and polypeptide, with a low proportion of free amino acid. Overall or partial estimation of hydroxyprolinuria may be carried out after isolation and hydrolysis of the peptides on ion exchange resin, by an automatic, continuous flow technique. This method presents a certain number of advantages, such as, selectivity, sensitivity and practicability, compared with that which we proposed in 1968. Determination of the criteria of quality of the method shows that it is suitable for exploration of variations in hydroxyprolinuria in diseases of bone and collagen. The reference values in relation to age and sex are also reported.