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Low Circulating Valine Associate With High Risk of Hip Fractures

Grahnemo, Louise
Eriksson, Anna L.
Nethander, Maria
Johansson, Robert
Lorentzon, Karl Mattias
Mellstrom, Dan
Pettersson-Kymmer, Ulrika
Ohlsson, Claes
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Abstract
Context: Hip fractures constitute a major health concern. An adequate supply of amino acids is crucial to ensure optimal acquisition and remodeling of bone. Circulating amino acid levels have been proposed as markers of bone mineral density, but data on their ability to predict incident fractures are scarce. Objectives: To investigate the associations between circulating amino acids and incident fractures. Methods: We used UK Biobank (n = 111 257; 901 hip fracture cases) as a discovery cohort and the Umeå Fracture and Osteoporosis (UFO) hip fracture study (hip fracture cases n = 2225; controls n = 2225) for replication. Associations with bone microstructure parameters were tested in a subsample of Osteoporotic Fractures in Men Sweden (n = 449). Results: Circulating valine was robustly associated with hip fractures in the UK Biobank (HR per SD increase 0.79, 95% CI 0.73-0.84), and this finding was replicated in the UFO study (combined meta-analysis including 3126 incident hip fracture cases, odds ratio per SD increase 0.84, 95% CI 0.80-0.88). Detailed bone microstructure analyses showed that high circulating valine was associated with high cortical bone area and trabecular thickness. Conclusion: Low circulating valine is a robust predictor of incident hip fractures. We propose that circulating valine may add information for hip fracture prediction. Future studies are warranted to determine whether low valine is causally associated with hip fractures.
Keywords
hip fractures, biomarkers, amino acids, valine
Date
2023
Type
Journal article
Journal
Book
Volume
108
Issue
11
Page Range
1384-1393
Article Number
ACU Department
Mary MacKillop Institute for Health Research
Faculty of Health Sciences
Relation URI
Event URL
Open Access Status
License
CC BY-NC-ND 4.0
File Access
Open
Notes
© The Author(s) 2023. Published by Oxford University Press on behalf of the Endocrine Society.
This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs licence ( https://creativecommons. org/licenses/by-nc-nd/4.0/ ), which permits non-commercial reproduction and distribution of the work, in any medium, provided the original work is not altered or transformed in any way, and that the work is properly cited. For commercial re-use, please contact journals.permissions@oup.com.