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Clin Nutr. 2012 Oct;31(5):659-65. doi: 10.1016/j.clnu.2012.01.013. Epub 2012 Feb 25.

Higher serum concentrations of dietary antioxidants are associated with lower levels of inflammatory biomarkers during the year after hip fracture.

Author information

1
Department of Epidemiology and Public Health, University of Maryland School of Medicine, 520 W. Lombard Street, East Hall, Baltimore, MD 21201, USA. cdadamo@compmed.umm.edu

Abstract

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.

PMID:
22365613
PMCID:
PMC3412071
DOI:
10.1016/j.clnu.2012.01.013
[Indexed for MEDLINE]
Free PMC Article

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