1.Higashikawa, F, Noda, M, Awaya, T, et al. (2010) Improvement of constipation and liver function by plant-derived lactic acid bacteria: a double-blind, randomized trial. Nutrition 26, 367–374.
2.Lidbeck, A, Geltner-Allinger, U, Orrhage, KM, et al. (1991) Impact of Lactobacillus acidophilus supplements on the fecal microflora and soluble faecal bile acids in colon cancer patients. Microbiol Ecol Health Dis 4, 81–88.
3.Kalliomaki, M, Salminen, S, Poussa, T, et al. (2003) Probiotics and prevention of atopic disease: 4-year follow-up of a randomised placebo-controlled trial. Lancet 361, 1869–1871.
4.Kimoto-Nira, H, Suzuki, C, Kobayashi, M, et al. (2007) Anti-aging effect of a lactococcal strain: analysis using senescence-accelerated mice. Br J Nutr 98, 1178–1186.
5.Pathank, MA (1982) Sunscreens: tropical and systemic approaches for protection of human skin against harmful effects of solar radiation. J Am Acad Dermatol 7, 285–312.
6.McCallion, R & Li Wan Po, A (1993) Dry and photo-aged skin: manifestations and management. J Clin Pharm Ther 18, 15–32.
7.Heinrich, U, Neukam, K, Tronnier, H, et al. (2006) Long-term ingestion of high flavonol cocoa provides photoprotection against UV-induced erythema and improves skin condition in women. J Nutr 136, 1565–1569.
8.Stahl, W, Heinrich, U, Aust, O, et al. (2006) Lycopene-rich products and dietary photoprotection. Photochem Photobiol Sci 5, 238–242.
9.Cosgrove, MC, Franco, OH, Stewart, PG, et al. (2007) Dietary nutrients intakes and skin-aging appearance among middle-aged American women. Am J Clin Nutr 86, 1225–1231.
10.De Spirt, S, Stahl, W, Tronnier, H, et al. (2009) Intervention with flaxseed and borage oil supplements modulates skin condition in women. Br J Nutr 101, 440–445.
11.Nagata, C, Nakamura, K, Wada, K, et al. (2010) Association of dietary fat, vegetables and antioxidant micronutrients with skin ageing in Japanese women. Br J Nutr 103, 1493–1498.
12.Izumi, T, Saito, M, Obata, A, et al. (2007) Oral intake of soy isoflavone aglycone improves the aged skin of adult women. J Nutr Sci Vitaminol 53, 57–62.
13.Huh, SY, Shin, JW, Huh, CH, et al. (2010) The efficiency and safety of 4-n-butylrescorcinol 0·1 % cream for the treatment of melasma: a randomized controlled split-face trial. Ann Dermatol 22, 21–25.
14.Isawa, K, Noma, T, Yamamoto, M, et al. (2008) Verifying the ability of yogurt prepared with LB81 lactic acid bacteria to improve skin function (article in Japanese). J Int Microbiol 22, 1–5.
15.Carbonare, MD & Pathak, MA (1992) Skin photosensitizing agents and the role of reactive oxygen species in photoaging. J Photochem Photobiol 14, 105–124.
16.Wlaschek, M, Wenk, J, Brenneisen, J, et al. (1997) Singlet oxygen is an early intermediate in cytokine-dependent ultraviolet-A induction of interstitial collagenase in human dermal fibroblasts in vitro. FEBS Lett 413, 239–242.
17.Darr, D, Comb, S, Dunston, S, et al. (1992) Topical vitamin C protects procine skin from ultraviolet radiation-induced damage. Br J Dermatol 127, 247–253.
18.Alaluf, S, Heinrich, U, Stahl, W, et al. (2002) Dietary carotenoids contribute to normal human skin color and UV photosensitivity. J Nutr 132, 399–403.
19.Hurks, M, Garssen, J, van Loveren, H, et al. (1994) General aspects of UV-irradiation on the immune system. In Photobiology in Medicine, p. 161 [Jori, G, editor]. New York: Plenum Press.
20.Kripke, ML (1989) Immunologic mechanisms in UV-radiation carcinogenesis. Adv Cancer Res 34, 69–106.
21.Araneo, BA, Dowel, T, Moon, HB, et al. (1989) Regulation of murine lymphokine production in vivo. Ultraviolet radiation exposure depresses IL-2 and enhances IL-4 production by T cells through an IL-1 dependent mechanism. J Immunol 146, 1737–1744.
22.Makrantonaki, E & Zouboulis, CC (2007) Characteristics and pathomechanisms of endogenously aged skin. Dermatology 214, 352–360.
23.Yamamoto, A (1991) Skin surface lipids (article in Japanese). J Cos Sci Soc 15, 247–249.
24.Potts, RO, Buras, EM & Chrisman, DA (1984) Changes with age in the moisture content of human skin. J Invest Dermatol 82, 97–100.
25.Rogiers, V, Derde, MP, Verleye, G, et al. (1990) Standardized conditions needed for skin surface hydration measurements. Cosmet Toilet 105, 73–82.
26.Akutsu, N, Ooguri, M, Onodera, T, et al. (2009) Functional characteristics of the skin surface of children approaching puberty: age and seasonal influences. Acta Derm Venereol 89, 21–27.
27.Frodin, T, Helander, P, Molin, L, et al. (1988) Hydration of human stratum corneum studied in vivo by optothermal infrared spectrometry, electrical capacitance measurement, and evaporimetry. Acta Derm Venereol 68, 461–467.
28.Kikuchi, K, Kobayashi, H, Fur, IL, et al. (2002) The winter season affects more severely the facial skin than the forearm skin: comparative biophysical studies conducted in the same Japanese females in later summer and winter. Exog Dermatol 1, 32–38.
29.Tochihara, Y, Ohnaka, T, Nagai, Y, et al. (1993) Physiological responses and thermal sensations of the elderly in cold and hot environments. J Therm Biol 5/6, 335–361.
30.Collins, KJ, Exton Smith, AN & Dore, C (1981) Urban hypothermia: preferred temperature and thermal perception in old age. Br Med J 282, 175–177.