title: The reality of osteocalcin as a marker of vitamin K2.
abstract: The present study showed the correlation between undercarboxylated osteocalcin and vitamin D had a role in production of the undercarboxylated osteocalcin, when the amount of vitamin D 25 (OH) D, (below 30 ng/ml) was decreased, the linear correlation (r) between the vitamin D and undercarboxylated osteocalcin were also decreased r = 0.032 when the level of vitamin D was risen, the linear correlation was 0.274,unfortunately the study-population had little group of the normal level of vitamin D due to most of them were vitamin D insufficiency so the authors could not show the more value of 'r'. However, the present study confirmed that the role of vitamin D information of undercarboxylated osteocalcin (UcOC) which we recognized the UcOC at the low level of vitamin D will misinterpretation of the level of vitamin K2.
authors.affiliation: Department of Orthopaedic Surgery, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand. todrnarong@yahoo.com
authors.forename: Narong
authors.initials: N
authors.lastname: Bunyaratavej
authors.forename: Shutipen
authors.initials: S
authors.lastname: Buranasinsup
authors.forename: Arunee
authors.initials: A
authors.lastname: Jangsangthong
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000097:blood*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015675:Osteocalcin / Q000097:blood*; D024482:Vitamin K 2 / Q000097:blood*
chemical_list: D015415:Biomarkers; D015675:Osteocalcin; D024482:Vitamin K 2