TABLE 7.

Concentrations of lipids, tetrahydrobiopterin, glycogen, and glutathione in tissues of 31-wk-old rats at the end of a 12-wk period of receiving a LF or HF diet and water containing either 1.51% l-arginine·HCl or 2.55% l-alanine¹

	Groups				P-value
Variables	LF-Ala	LF-Arg	HF-Ala	HF-Arg	Diet	AA	Diet × AA
Liver lipid, g/100 g	3.85 ± 0.11b	3.64 ± 0.06b	4.59 ± 0.24a	4.66 ± 0.17a	<0.01	0.67	0.40
Muscle lipid, g/100 g	1.60 ± 0.11b	1.64 ± 0.12b	1.94 ± 0.14a	1.92 ± 0.15a	0.05	0.42	0.52
RP2 adipose tissue lipid, g/100 g	80.6 ± 1.6	82.0 ± 1.8	83.1 ± 1.6	82.9 ± 0.6	0.27	0.72	0.60
Liver BH4, nmol/g tissue	4.02 ± 0.38b	5.06 ± 0.43a	3.13 ± 0.15c	4.35 ± 0.13b	0.02	<0.01	0.79
Liver glycogen, mg/g	21.8 ± 1.7	18.6 ± 0.9	19.7 ± 0.5	19.1 ± 1.8	0.55	0.16	0.31
Muscle glycogen, mg/g	1.26 ± 0.19	1.13 ± 0.20	1.01 ± 0.13	1.05 ± 0.11	0.36	0.80	0.65
Liver GSH, μmol/g	6.09 ± 0.27a	5.59 ± 0.33a	4.41 ± 0.43b	4.24 ± 0.33b	<0.01	0.41	0.67

¹Values are means ± SEM, n = 8. Means in a row with superscripts without a common letter differ, P < 0.05.

²Abbreviations used: BH4, tetrahydrobiopterin; GSH, reduced glutathione.