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

Table 5

Average plasma tocopherol fractions/LPO across age strata.

Plasma Toc		20s	30s	70s	80s	100s
Total  Toc/LPO	Male; (𝑛)	4.02±2.01; (4)	3.38±2.98; (8)	4.57±11.83; (11)	3.71±4.28; (5)	6.43±3.61; (16)
	Female (𝑛)	3.39±4.38; (4)	4.18±7.30; (8)	5.12±15.67; (18)	5.18±7.87; (3)	9.43±14.22; (83)
	Total; (𝑛)	3.67±2.65; (8)	3.71±3.45; (16)	4.94±14.33; (29)	4.36±9.62; (8)	8.95±13.13; (99)
α Toc/LPO	Male; (𝑛)	3.54±1.69; (4)	3.04±2.90; (8)	4.17±11.17; (11)	3.23±3.34; (5)	5.75±3.29; (15)
	Female (𝑛)	3.01±4.09; (4)	3.75±7.38; (8)	4.58±14.37; (18)	4.68±7.89; (3)	9.07±13.86; (67)
	Total; (𝑛)	3.24±2.30; (8)	3.34±3.42; (16)	4.45±13.18; (29)	3.88±9.41; (8)	8.47±12.70; (82)
β Toc/LPO	Male; (𝑛)	0.07±0.02; (4)	0.05±0.04; (8)	0.07±0.11; (11)	0.07±0.16; (5)	0.12±0.07; (15)
	Female (𝑛)	0.07±0.06; (4)	0.07±0.08; (8)	0.09±0.22; (18)	0.10±0.28; (3)	0.19±0.24; (64)
	Total; (𝑛)	0.07±0.03; (8)	0.06±0.04; (16)	0.08±0.20; (29)	0.08±0.26; (8)	0.17±0.26; (79)
γ Toc/LPO	Male; (𝑛)	0.41±0.32; (4)	0.29±0.32; (8)	0.32±0.73; (11)	0.40±1.03; (5)	0.63±0.47; (15)
	Female (𝑛)	0.31±0.34; (4)	0.35±0.94（8	0.46±2.17; (18)	0.40±1.54; (3)	1.06±1.59; (67)
	Total; (𝑛)	0.36±0.37; (8)	0.32±0.41; (16)	0.41±1.84; (29)	0.40±1.44; (8)	0.98±1.46; (82)

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