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  • Higher serum concentrations...
    D’Adamo, Christopher R; Miller, Ram R; Shardell, Michelle D; Orwig, Denise L; Hochberg, Marc C; Ferrucci, Luigi; Semba, Richard D; Yu-Yahiro, Janet A; Magaziner, Jay; Hicks, Gregory E

    Clinical nutrition (Edinburgh, Scotland), 10/2012, Letnik: 31, Številka: 5
    Journal Article

    Summary Background & aims Chronic inflammation impairs recovery among the 1.6 million people who suffer from hip fracture annually. Vitamin E and the carotenoids are two classes of dietary antioxidants with profound anti-inflammatory effects, and the goal of this study was to assess whether higher post-fracture concentrations of these antioxidants were associated with lower levels of interleukin 6 (IL-6) and the soluble receptor for tumor necrosis factor-alpha (sTNF-αR1), two common markers of inflammation. Methods Serum concentrations of the dietary antioxidants and inflammatory markers were assessed at baseline and 2, 6, and 12 month follow-up visits among 148 hip fracture patients from The Baltimore Hip Studies. Generalized estimating equations modeled the relationship between baseline and time-varying antioxidant concentrations and inflammatory markers. Results Higher post-fracture concentrations of vitamin E and the carotenoids were associated with lower levels of inflammatory markers. Associations were strongest at baseline, particularly between the α-tocopherol form of vitamin E and sTNF-αR1 ( p  = 0.05) and total carotenoids and both sTNF-αR1( p  = 0.01) and IL-6 ( p  = 0.05). Higher baseline and time-varying α-carotene and time-varying lutein concentrations were also associated with lower sTNF-αR1 at all post-fracture visits ( p  ≤ 0.05). Conclusions These findings suggest that a clinical trial increasing post-fracture intake of vitamin E and the carotenoids may be warranted.