TABLE 2.

[³H]AA half-lives in rat brain phospholipids

n-3 PUFA Diet Group	Brain Lipid	Slope, Days	SE, Days	P Value	T1/2 (days)	Jout (µmol/brain/day)	Loss/Brain/Day (%)
Adequate
	Total PL	−0.006830	0.0006142	<0.0001	44	0.248	1.6
	ChoGpl	−0.01110	0.0007045	<0.0001	27	0.103	2.6
	EtnGpl	−0.006694	0.0006154	<0.0001	45	0.149	1.5
	PtdIns	−0.01137	0.0008117	<0.0001	26	0.080	2.6
	PtdSer	−0.005847	0.0007621	<0.0001	51	0.014	1.4
Deprived
	Total PL	−0.006581	0.0005942	<0.0001	46	0.281	1.5
	ChoGpl	−0.01067	0.0006158	<0.0001	28	0.123	2.4
	EtnGpl	−0.005873	0.0006609	<0.0001	51	0.149	1.4
	PtdIns	−0.01071	0.0007731	<0.0001	28	0.088	2.5
	PtdSer	−0.005276	0.0007224	<0.0001	57	0.015	1.0

Slopes for decline of [³H] AA radioactivity in brain phospholipids and corresponding calculated half-lives, equation 3, (T_1/2) = log₁₀ (2)/slope of regression line and rates of AA loss; equation 4, J_out (µmol/brain/day) = ln(2)C_AA/T_1/2. p-values designate significance of difference of slope from 0. ChoGpl and PtdIns were significantly different compared with EtnGpl and PtdSer within the same dietary group; P < 0.05. Mean ± SE brain weight; 2.02 ± 0.34 and 2.10 ± 0.52 g, n-3 PUFA adequate and deprived groups, respectively. See Table 1 for abbreviations.