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Vitamin K deficiency, evaluated with higher serum ucOC, was correlated with poor bone status in women


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Title: Vitamin K deficiency, evaluated with higher serum ucOC, was correlated with poor bone status in women
Authors: Tanaka, Natsumi / Arima, Kazuhiko / Nishimura, Takayuki / Tomita, Yoshihito / Mizukami, Satoshi / Okabe, Takuhiro / Abe, Yasuyo / Kawashiri, Shin-ya / Uchiyama, Michiko / Honda, Yuzo / Tsujimoto, Ritsu / Kanagae, Mitsuo / Osaki, Makoto / Aoyagi, Kiyoshi
Issue Date: 10-Apr-2020
Publisher: BioMed Central Ltd.
Citation: Journal of physiological anthropology, 39(1), art.no.9; 2020
Abstract: BACKGROUND: An increase in serum undercarboxylated osteocalcin concentrations suggests vitamin K deficiency. Clinical intervention studies suggested that the vitamin K supplementation might contribute to preventing bone loss in postmenopausal women. Evidence on the relationship between serum undercarboxylated osteocalcin (ucOC) levels and bone parameters of quantitative ultrasound (QUS) is limited. We examined the correlation between serum ucOC concentrations and bone status as measured by QUS among middle-aged and older Japanese men and women. METHODS: The subjects were community-dwelling men (n = 358) and women (n = 503) aged ≥ 40 years in Japan. Heel QUS parameters, including the stiffness index, speed of sound, and broadband ultrasound attenuation, were measured. Serum ucOC concentrations were measured by electrochemiluminescence immunoassay. Grip strength was measured in the dominant hand. Information on alcohol drinking, current smoking, exercise, and menopause in women was collected. RESULTS: Serum ucOC concentrations were significantly associated with age in both sexes. Serum ucOC concentrations in men were higher at ≥ 80 years than those in the age groups of 40-49, 50-59, and 60-69 years. Serum ucOC concentrations in women were higher in the age groups of 50-59 and 60-69 years than those at 40-49 years. Partial correlation analysis adjusting for covariates (age, body mass index, grip strength, alcohol drinking, current smoking, and exercise in men; age, body mass index, grip strength, alcohol drinking, current smoking, exercise, and menopause in women) showed that serum ucOC concentrations were negatively significantly correlated with all QUS parameters in women. Serum ucOC concentrations were not correlated with them in men. CONCLUSIONS: Vitamin K deficiency, evaluated with higher serum ucOC, was correlated with poor bone status in women.
Keywords: Alcohol drinking / Body mass index / Bone health / Current smoking / Sexes / Vitamin K
URI: http://hdl.handle.net/10069/39896
DOI: 10.1186/s40101-020-00221-1
Rights: © The Author(s). 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you giveappropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commonslicence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commonslicence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtainpermission directly from the copyright holder. To view a copy of this licence,visit http://creativecommons.org/licenses/by/4.0/.The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/39896

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