Total peptide-bound and free urinary hydroxyproline and creatinine were estimated in 50
newborn infants, full-term, premature or growth-retarded, after 3, 10 or 20 days of life. The …

The daily urinary excretion of endogenous hydroxyproline is believed to be a reliable index
of collagen turnover, particularly the collagen matrix of bone (Ziff et al., 1956; Prockop and …

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 …

Extract: Rates of urinary excretion of total hydroxyproline by 38 normal fullsize male infants
were determined on 176 occasions. Each urine collection period was 72 hours. When the …

The urinary hydroxyproline excretion from normal individuals ranging from birth to 70 years
of age has been expressed as milligrams hydroxyproline to milligrams creatinine excreted …

Twenty-four hour urinary total hydroxyproline was measured in 70 normal males and 10
normal females between the ages of 5 through 49. Normal values for excretion of …

Urine total, free and peptide bound hydroxyproline excretion have been measured at regular
intervals after birth in 5 infants with gestations from 32 to 34 weeks and in 2 infants with …

Collagen degradation is essentially the only source of free and peptide hydroxyproline in
plasma and urine. Normally over 95% of the hydroxyproline in urine is peptide-bound, and …

Healthy newborn infants were studied in regard to daily urinary output of free and total
hydroxyproline and the results correlated with other recognized indices of skeletal …

Molar ratios of peptide-bound and free hydroxyproline: creatinine (OHPr: Cr) in urine were
measured at 3, 6, 9, and 12 months of age in two groups of very-low-birthweight (VLBW less …