title: Age-related changes of urinary urea. Epidemiological study in children from southern Italy living in Cimitile.
abstract: Urinary urea was measured, under normal living conditions, in children aged 3-16 years, from Cimitile, a small town near Naples in Southern Italy. Urinary urea correlated with age, height, weight, body mass index and body surface area, and was independent from sex. Urinary urea also correlated with urinary creatinine, uric acid, oxalate, sodium and phosphate. Protein intake assessed from urea excretion was 2.66 +/- 0.66 g/kg at 3 years of age and 1.49 +/- 0.31 g/kg at 16 years, and exceeded Italian standards for recommended intake. Also, the height and weight of the children living in Cimitile, with few exceptions, were in excess of national reference standards.
authors.affiliation: Chair of Nephrology/Department of Pediatrics, University Federico II, Naples, Italy.
authors.forename: N G
authors.initials: NG
authors.lastname: De Santo
authors.forename: B
authors.initials: B
authors.lastname: Di Iorio
authors.forename: G
authors.initials: G
authors.lastname: Capasso
authors.forename: P
authors.initials: P
authors.lastname: Anastasio
authors.forename: V A
authors.initials: VA
authors.lastname: DiLeo
authors.forename: R
authors.initials: R
authors.lastname: De Mercato
authors.forename: R
authors.initials: R
authors.lastname: Stamler
authors.forename: J
authors.initials: J
authors.lastname: Stamler
mesh_terms: D000293:Adolescent; D000375:Aging / Q000652:urine*; D001827:Body Height; D001835:Body Weight; D002648:Child; D002675:Child, Preschool; D004044:Dietary Proteins / Q000008:administration & dosage* / Q000378:metabolism; D005260:Female; D006801:Humans; D007558:Italy / Q000453:epidemiology; D008297:Male; D009751:Nutritional Requirements; D012015:Reference Standards; D014508:Urea / Q000652:urine*
chemical_list: D004044:Dietary Proteins; D014508:Urea