HYDROXYPROLINE, a nonessential imino acid, occurs in the body almost exclusively in collagen, where it accounts for 13 per cent of the total amino acids.1 Man excretes hydroxyproline in the urine i ...

Table 1 shows the total twenty-four hour urinary excretion in a group of 12 normal volunteers. The mean excretion for the male group was 28.1 mg. (S.D. ± 8.5, with a range of 20.6 to 41.0) and ...

GUSTAVSON1 has recently directed attention to the importance of hydroxyproline residues in determining the hydrothermal stability of a collagen. He examined collagen samples from two broad sources ...

Extract: The mean daily urinary excretion of hydroxyproline on the first day of life was 4.4 mg/24 h for 50full-term normal infants, 3.5 mg/24 h for 17 full-term infants with intrauterine growth ...

Therefore, the team assumed that increased hydroxyproline levels might be the cause of joint hypermobility. By various estimates, this disorder is found in 15% to 50% of young ASD patients.

Collagen contains specific amino acids – Glycine, Proline, Hydroxyproline and Arginine. These amino acids have a regular arrangement in each of the three chains of these collagen subunits. The ...