title: Variations in the serum concentration and urine excretion of alpha 2HS-glycoprotein, a bone-related protein, in normal individuals and in patients with osteogenesis imperfecta.
abstract: The concentration of alpha 2HS-glycoprotein was measured in the serum and urine of normal individuals and of patients with osteogenesis imperfecta. The serum concentration of alpha 2HS-glycoprotein was higher in normal children than in adults. In women values showed a progressive age-related decrease, from 632 mg/l at 21-30 years to 573 mg/l at 51-60 years. In men there was no such age-related variation, and values were higher than in women of comparable age; the mean value for men aged 20-60 years was 648 mg/l. Of 48 patients with osteogenesis imperfecta, 11 had an abnormally high concentration of alpha 2HS-glycoprotein in serum; the cause of this is not clear. In urine of 24 normal individuals the mean value of the ratio albumin: alpha 2HS-glycoprotein was 20 +/- 3; in serum the corresponding ratio was 70. Urine excretion of alpha 2HS-glycoprotein was lowest in female children (132 +/- 29 micrograms/24 h) and highest in male adults (592 +/- 91 micrograms/24 h); values in patients with osteogenesis imperfecta did not differ from normal.
mesh_terms: D000293:Adolescent; D000328:Adult; D000375:Aging; D001798:Blood Proteins / Q000378:metabolism* / Q000652:urine; D001842:Bone and Bones / Q000378:metabolism*; D002648:Child; D005260:Female; D006801:Humans; D007122:Immunoelectrophoresis; D008297:Male; D010013:Osteogenesis Imperfecta / Q000378:metabolism*; D012016:Reference Values; D012737:Sex Factors; D060749:alpha-2-HS-Glycoprotein
chemical_list: C556354:AHSG protein, human; D001798:Blood Proteins; D060749:alpha-2-HS-Glycoprotein