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Dietary vitamin K intake is associated with bone quantitative ultrasound measurements but not with bone peripheral biochemical markers in elderly men and women.
Bone. 2011 Jun 01; 48(6):1313-8.BONE

Abstract

BACKGROUND

Vitamin K may have a protective role against bone loss and osteoporotic fractures associated to aging, although data in humans are inconsistent and the mechanisms involved are still unknown. The main objective of the study was to assess the associations between vitamin K intake, bone density, bone structure quality and biochemical bone metabolism markers in elderly subjects. We also analyzed the relationship between changes in vitamin K intake and the evolution of bone quality markers after two years of follow-up.

METHODS

Cross-sectional analysis was carried out on 365 elderly subjects, 200 of whom were also included in a 2-year longitudinal follow-up study. Usual dietary intakes were assessed using a semi-quantitative 137-item food frequency questionnaire (FFQ). Vitamin K intake was estimated using the USDA database. Bone biochemical markers were measured in a subset of 125 subjects. Quantitative ultrasound assessment (QUS) was performed at the calcaneus to estimate bone mineral density (BMD), speed of sound (SOS), broadband ultrasound attenuation (BUA) and the quantitative ultrasound index (QUI).

RESULTS

Dietary intake of vitamin K was significantly associated with higher BMD and better QUS. No significant associations were found between vitamin K intake and bone biochemical markers. Those subjects who increased their vitamin K intake showed a lower loss of BMD, a lower decrease in SOS and a nonsignificant increase in BUA.

CONCLUSIONS

High dietary vitamin K intake was associated with superior bone properties. Moreover, an increase in dietary vitamin K was significantly related to lower losses of bone mineral density and smaller increases in the porosity and elasticity attributed to aging, which helps to explain the previously described protective effect of vitamin K intake against osteoporotic fractures.

Authors+Show Affiliations

Human Nutrition Unit, Facultat de Medicina i Ciències de la Salut, IISPV, Universitat Rovira i Virgili, Reus, Spain. monica.bullo@urv.catNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21447413

Citation

Bulló, M, et al. "Dietary Vitamin K Intake Is Associated With Bone Quantitative Ultrasound Measurements but Not With Bone Peripheral Biochemical Markers in Elderly Men and Women." Bone, vol. 48, no. 6, 2011, pp. 1313-8.
Bulló M, Estruch R, Salas-Salvadó J. Dietary vitamin K intake is associated with bone quantitative ultrasound measurements but not with bone peripheral biochemical markers in elderly men and women. Bone. 2011;48(6):1313-8.
Bulló, M., Estruch, R., & Salas-Salvadó, J. (2011). Dietary vitamin K intake is associated with bone quantitative ultrasound measurements but not with bone peripheral biochemical markers in elderly men and women. Bone, 48(6), 1313-8. https://doi.org/10.1016/j.bone.2011.03.767
Bulló M, Estruch R, Salas-Salvadó J. Dietary Vitamin K Intake Is Associated With Bone Quantitative Ultrasound Measurements but Not With Bone Peripheral Biochemical Markers in Elderly Men and Women. Bone. 2011 Jun 1;48(6):1313-8. PubMed PMID: 21447413.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dietary vitamin K intake is associated with bone quantitative ultrasound measurements but not with bone peripheral biochemical markers in elderly men and women. AU - Bulló,M, AU - Estruch,R, AU - Salas-Salvadó,J, Y1 - 2011/04/05/ PY - 2010/12/21/received PY - 2011/03/22/revised PY - 2011/03/22/accepted PY - 2011/3/31/entrez PY - 2011/3/31/pubmed PY - 2011/9/29/medline SP - 1313 EP - 8 JF - Bone JO - Bone VL - 48 IS - 6 N2 - BACKGROUND: Vitamin K may have a protective role against bone loss and osteoporotic fractures associated to aging, although data in humans are inconsistent and the mechanisms involved are still unknown. The main objective of the study was to assess the associations between vitamin K intake, bone density, bone structure quality and biochemical bone metabolism markers in elderly subjects. We also analyzed the relationship between changes in vitamin K intake and the evolution of bone quality markers after two years of follow-up. METHODS: Cross-sectional analysis was carried out on 365 elderly subjects, 200 of whom were also included in a 2-year longitudinal follow-up study. Usual dietary intakes were assessed using a semi-quantitative 137-item food frequency questionnaire (FFQ). Vitamin K intake was estimated using the USDA database. Bone biochemical markers were measured in a subset of 125 subjects. Quantitative ultrasound assessment (QUS) was performed at the calcaneus to estimate bone mineral density (BMD), speed of sound (SOS), broadband ultrasound attenuation (BUA) and the quantitative ultrasound index (QUI). RESULTS: Dietary intake of vitamin K was significantly associated with higher BMD and better QUS. No significant associations were found between vitamin K intake and bone biochemical markers. Those subjects who increased their vitamin K intake showed a lower loss of BMD, a lower decrease in SOS and a nonsignificant increase in BUA. CONCLUSIONS: High dietary vitamin K intake was associated with superior bone properties. Moreover, an increase in dietary vitamin K was significantly related to lower losses of bone mineral density and smaller increases in the porosity and elasticity attributed to aging, which helps to explain the previously described protective effect of vitamin K intake against osteoporotic fractures. SN - 1873-2763 UR - https://www.unboundmedicine.com/medline/citation/21447413/Dietary_vitamin_K_intake_is_associated_with_bone_quantitative_ultrasound_measurements_but_not_with_bone_peripheral_biochemical_markers_in_elderly_men_and_women_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S8756-3282(11)00875-1 DB - PRIME DP - Unbound Medicine ER -