Oxidative Stress and Longevity in Okinawa: An Investigation of Blood Lipid Peroxidation and Tocopherol in Okinawan Centenarians

Table 6

Intracellular tocopherol: lipid peroxide ratios across age strata.

Intracellular Toc		20s	30s	70s	80s	100s
Total  Toc/LPO	Male; (𝑛)	0.86±0.28; (4)	0.68±0.33; (8)	0.89±0.43; (11)	0.99±1.16; (5)	1.21±1.12; (16)
	Female (𝑛)	0.92±0.61; (4)	1.07±1.42; (8)	0.84±1.00; (18)	1.12±1.65; (3)	1.67±1.69; (71)
	Total; (𝑛)	0.88±0.34; (8)	0.84±0.57; (16)	0.86±0.85; (29)	1.05±1.68; (8)	1.58±1.60; (87)
α  Toc/LPO	Male; (𝑛)	0.74±0.27; (4)	0.60±0.28; (8)	0.79±0.36; (11)	0.84±0.88; (5)	1.02±0.92; (16)
	Female (𝑛)	0.80±0.55; (4)	0.95±1.55; (8)	0.73±0.94; (18)	1.00±1.89; (3)	1.40±1.44; (71)
	Total; (𝑛)	0.76±0.32; (8)	0.74±0.59; (16)	0.75±0.78; (29)	0.91±1.79; (8)	1.33±1.36; (87)
β  Toc/LPO	Male; (𝑛)	0.01±0.00; (4)	0.01±0.01; (8)	0.01±0.01; (11)	0.02±0.03; (5)	0.06±0.03; (8)
	Female (𝑛)	0.01±0.00; (4)	0.01±0.02; (8)	0.01±0.02; (18)	0.02±0.04; (3)	0.12±0.24; (34)
	Total; (𝑛)	0.02±0.01; (8)	0.01±0.01; (16)	0.01±0.03; (29)	0.02±0.03; (8)	0.11±0.22; (42)
γ  Toc/LPO	Male; (𝑛)	0.10±0.03; (4)	0.08±0.10; (8)	0.09±0.13; (11)	0.13±0.31; (5)	0.18±0.20; (15)
	Female (𝑛)	0.11±0.13; (4)	0.11±0.21; (8)	0.09±0.21; (18)	0.11±0.35; (3)	0.22±0.21; (68)
	Total; (𝑛)	0.11±0.06; (8)	0.09±0.10; (16)	0.09±0.19; (29)	0.12±0.38; (8)	0.21±0.21; (83)

Toc: Tocopherol; LPO: lipid peroxidase. Note: no significant differences between groups.