Table 2.

Plasma concentration of major unesterified fatty acids in 4, 12 and 24 month old rats

Fatty Acid	4 Months (nmol/ml)	12 Months (nmol/ml)	24 Months (nmol/ml)
Palmitic acid (16:0)	450 ± 85	396 ± 142	293 ± 162
Stearic acid (18:0)	130 ± 17	112 ± 26	86 ± 23 *
Oleic acid (18:1n-9)	281 ± 75	291 ± 156	226 ± 148
Linoleic acid (18:2n-6)	366 ± 94	397 ± 231	254 ± 135
Arachidonic acid (20:4n-6)	69 ± 16	73 ± 33	56 ± 18
Docosahexaenoic acid (22:6n-3)	20 ± 7	21 ± 10	16 ± 7

Data are mean ± SD n = 6 per group. * p < 0.05 vs 4 Months