Effects of Aging and Tocotrienol-Rich Fraction Supplementation on Brain Arginine Metabolism in Rats

Figure 1

The levels of (a) L-arginine, (b) L-ornithine, (c) L-citrulline, (d) glutamine, (e) glutamate, (f) GABA, (g) glutamate/GABA ratio, and (h) L-citrulline/L-arginine ratio in the postrhinal cortex (POR), entorhinal cortex (EC), brain stem (BS), striatum (ST), and cerebellum (CE) in young and old rats. Data is presented as mean ± SEM. The asterisks indicate a significant difference between groups: , , and .

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