title: Reference database of biochemical markers of bone turnover for the Japanese female population. Japanese Population-based Osteoporosis (JPOS) Study.
abstract: The present study was conducted as a part of the Japanese Population-based Osteoporosis (JPOS) Study to establish reference values on the biochemical markers of bone turnover in the general Japanese female population over an applicable age range. The study recruited 3250 women aged 15-79 years, randomly selected from five municipalities throughout Japan, and obtained measurements of serum osteocalcin (OC) and bone-specific alkaline phosphatase (BAP); free and total forms of immunoreactive deoxypyridinoline, free pyridinolines and type I collagen cross-linked C-terminal telopeptide (CTx) in urine; serum intact parathyroid hormone (PTH) and 1,25 dihydroxy vitamin D (1,25 (OH)2D); and bone density at the spine, hip and distal forearm. After excluding subjects with apparent or suggested abnormalities affecting bone mass, 2535 (78%) subjects were further analyzed. The authors presented 5-year age-specific mean values of the markers and mean marker levels derived from women aged 30-44 years with normal bone density as a healthy young adult reference. Values of the markers decreased with increasing age before the age of 40, increased steeply among subjects in their 50s, and remained elevated in the elderly. Serum calcium, phosphorus, PTH and 1,25 (OH)2D levels were higher in postmenopausal women than in premenopausal women. However, 1,25 (OH)2D was lower among early postmenopausal subjects. The levels of OC, BAP, CTx, PTH and 1,25(OH)2D were significantly greater for women with osteoporosis than for those without. The diagnostic value of the markers was limited as the sensitivity and specificity ranged from 55% to 60%. These findings will aid health professionals in the correct assessment of bone turnover status in Japanese women over a wide range of age.
authors.affiliation: Department of Public Health, Kinki University School of Medicine , 377-2 Oono-Higashi, Osaka-Sayama, 589-8511 Osaka, Japan. masa@med.kindai.ac.jp
authors.forename: Masayuki
authors.initials: M
authors.lastname: Iki
authors.forename: Takashi
authors.initials: T
authors.lastname: Akiba
authors.forename: Toshio
authors.initials: T
authors.lastname: Matsumoto
authors.forename: Harumi
authors.initials: H
authors.lastname: Nishino
authors.forename: Sadanobu
authors.initials: S
authors.lastname: Kagamimori
authors.forename: Yoshiko
authors.initials: Y
authors.lastname: Kagawa
authors.forename: Hideo
authors.initials: H
authors.lastname: Yoneshima
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000469:Alkaline Phosphatase / Q000097:blood; D000596:Amino Acids / Q000652:urine; D015415:Biomarkers / Q000097:blood / Q000652:urine; D015519:Bone Density; D016723:Bone Remodeling; D002117:Calcitriol / Q000097:blood; D003094:Collagen / Q000652:urine; D024042:Collagen Type I; D016208:Databases, Factual; D005260:Female; D006801:Humans; D007564:Japan; D008875:Middle Aged; D015675:Osteocalcin / Q000097:blood; D010024:Osteoporosis / Q000097:blood / Q000652:urine; D010281:Parathyroid Hormone / Q000097:blood; D010455:Peptides / Q000652:urine; D012016:Reference Values
chemical_list: D000596:Amino Acids; D015415:Biomarkers; D024042:Collagen Type I; D010281:Parathyroid Hormone; D010455:Peptides; C052929:collagen type I trimeric cross-linked peptide; D015675:Osteocalcin; C015484:pyridinoline; C036020:deoxypyridinoline; D003094:Collagen; D000469:Alkaline Phosphatase; D002117:Calcitriol