Timo A Lakka, Saara Heinonen, Taisa Sallinen, Aino-Maija Eloranta, Suvi Laamanen, Annie M Skinner, Eero A Haapala, Dimitris Vlachopoulos, Alan R Barker, Toni Rikkonen, Tomi P Laitinen, Jyrki Ågren, Sonja Soininen
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引用次数: 0
Abstract
Little is known about the associations of plasma fatty acids with bone mineral accrual, and the evidence is mostly based on cross-sectional data. In this observational study, we investigated for the first time the longitudinal associations of plasma fatty acid composition as well as desaturase and elongase enzyme activities with bone mineral density (BMD) from childhood to adolescence. Altogether, 480 children (227 girls) aged 7-9 yr attending baseline examinations were included in the current analyses. The longitudinal associations of the proportions of fatty acids in plasma phospholipids, analyzed by gas chromatography, as well as estimated desaturase and elongase activities with total body less head BMD, measured by dual-energy X-ray absorptiometry, were analyzed by linear mixed-effects models using values from baseline, 2-yr, and 8-yr follow-up and adjusted for sex, maturity offset, follow-up time, and lean mass or fat mass. Decreased proportion of linoleic acid (standardized regression coefficient β = -.023, p = .001), increased proportion of dihomo-gamma-linolenic acid (β = .029, p < .001), and Δ6-desaturase activity (β = .032, p < .001) were associated with increased BMD independent of sex, maturity offset, follow-up time, lean mass, and fat mass. Increased proportions of nervonic acid (β = .018, p = .012), arachidonic acid (β = .019, p = .017), and docosapentaenoic acid (β = .020, p = .013) were associated with increased BMD, and these associations were partly explained by lean mass. Increased proportions of arachidic acid (β = .022, p = .005), behenic acid (β = .018, p = .010), lignoceric acid (β = .015, p = .040), and palmitoleic acid (β = .016, p = .013), increased stearoyl-CoA-desaturase activity (β = .017, p = .009), and decreased elongase activity (β = -.017, p = .023) were associated with increased BMD, and these associations were partly explained by fat mass. Single plasma saturated, monounsaturated, and polyunsaturated fatty acids have divergent longitudinal associations with BMD from childhood to adolescence. Plasma fatty acid composition predicts bone mineral accrual from childhood to adolescence, implying that fatty acid metabolism is important for healthy bone development since childhood.
期刊介绍:
The Journal of Bone and Mineral Research (JBMR) publishes highly impactful original manuscripts, reviews, and special articles on basic, translational and clinical investigations relevant to the musculoskeletal system and mineral metabolism. Specifically, the journal is interested in original research on the biology and physiology of skeletal tissues, interdisciplinary research spanning the musculoskeletal and other systems, including but not limited to immunology, hematology, energy metabolism, cancer biology, and neurology, and systems biology topics using large scale “-omics” approaches. The journal welcomes clinical research on the pathophysiology, treatment and prevention of osteoporosis and fractures, as well as sarcopenia, disorders of bone and mineral metabolism, and rare or genetically determined bone diseases.