1Alexopoulos, GS (2005) Depression in the elderly. Lancet 365, 1961–1970.
2Hybels, CF & Blazer, DG (2003) Epidemiology of late-life mental disorders. Clin Geriatr Med 19, 663–696.
3Deschamps, V, Barberger-Gateau, P, Peuchant, E, et al. (2001) Nutritional factors in cerebral aging and dementia: epidemiological arguments for a role of oxidative stress. Neuroepidemiology 20, 7–15.
4Bartali, B, Frongillo, EA, Guralnik, JM, et al. (2008) Serum micronutrient concentrations and decline in physical function among older persons. JAMA 299, 308–315.
5Singh, U, Devaraj, S & Jialal, I (2005) Vitamin E, oxidative stress, and inflammation. Annu Rev Nutr 25, 151–174.
6Wu, D & Meydani, SN (2008) Age-associated changes in immune and inflammatory responses: impact of vitamin E intervention. J Leukoc Biol 84, 900–914.
7Institute of Medicine (2000) Dietary Reference Intakes for Vitamin C, Vitamin E, Selenium, and Carotenoids. Washington, DC: National Academy Press.
8Franceschi, C, Capri, M, Monti, D, et al. (2007) Inflammaging and anti-inflammaging: a systemic perspective on aging and longevity emerged from studies in humans. Mech Ageing Dev 128, 92–105.
9Raison, CL, Capuron, L & Miller, AH (2006) Cytokines sing the blues: inflammation and the pathogenesis of depression. Trends Immunol 27, 24–31.
10Capuron, L & Miller, AH (2004) Cytokines and psychopathology: lessons from interferon-α. Biol Psychiatry 56, 819–824.
11Byrne, GI, Lehmann, LK, Kirschbaum, JG, et al. (1986) Induction of tryptophan degradation in vitro and in vivo: a γ-interferon-stimulated activity. J Interferon Res 6, 389–396.
12Pertovaara, M, Raitala, A, Lehtimaki, T, et al. (2006) Indoleamine 2,3-dioxygenase activity in nonagenarians is markedly increased and predicts mortality. Mech Ageing Dev 127, 497–499.
13Frick, B, Schroecksnadel, K, Neurauter, G, et al. (2004) Increasing production of homocysteine and neopterin and degradation of tryptophan with older age. Clin Biochem 37, 684–687.
143C Study Group (2003) Vascular factors and risk of dementia: design of the Three-City Study and baseline characteristics of the study population. Neuroepidemiology 22, 316–325.
15Ware, JE, Snow, KK, Kosinski, M, et al. (1993) SF-36® Health Survey Manual and Interpretation Guide. Boston, MA: The Health Institute.
16Menke, T, Niklowitz, P, Adam, S, et al. (2000) Simultaneous detection of ubiquinol-10, ubiquinone-10, and tocopherols in human plasma microsamples and macrosamples as a marker of oxidative damage in neonates and infants. Anal Biochem 282, 209–217.
17Yaffe, K, Kanaya, A, Lindquist, K, et al. (2004) The metabolic syndrome, inflammation, and risk of cognitive decline. JAMA 292, 2237–2242.
18Capuron, L, Su, S, Miller, AH, et al. (2008) Depressive symptoms and metabolic syndrome: is inflammation the underlying link? Biol Psychiatry 64, 896–900.
19Widner, B, Werner, ER, Schennach, H, et al. (1997) Simultaneous measurement of serum tryptophan and kynurenine by HPLC. Clin Chem 43, 2424–2426.
20Winkler, C, Schroecksnadel, K, Schennach, H, et al. (2007) Vitamin C and E suppress mitogen-stimulated peripheral blood mononuclear cells in vitro. Int Arch Allergy Immunol 142, 127–132.
21Huang, A, Fuchs, D, Widner, B, et al. (2002) Serum tryptophan decrease correlates with immune activation and impaired quality of life in colorectal cancer. Br J Cancer 86, 1691–1696.
22Gao, X, Martin, A, Lin, H, et al. (2006) α-Tocopherol intake and plasma concentration of Hispanic and non-Hispanic white elders is associated with dietary intake pattern. J Nutr 136, 2574–2579.
23Panemangalore, M & Lee, CJ (1992) Evaluation of the indices of retinol and α-tocopherol status in free-living elderly. J Gerontol 47, B98–B104.