Table 9.

Effects of arginine and its metabolites (NO and polyamine) on cell protein synthesis and urea nitrogen (d2)

	0.4mM Arg	0.4mM Arg + 3mM L-NMMA	0.4mM Arg + 3mM L-NMMA + 0.5mM SNP	0.4mM Arg + 5mM DFMO	0.4mM Arg + 5mM DFMO + 10 µM Putrescine
Protein synthesis rate (%)	76.10 ± 4.57 a	64.04 ± 3.25 b	72.82 ± 2.14 a	67.71 ± 2.70 b	74.91 ± 3.43 a
Urea nitrogen(mmol/L)	0.93 ± 0.05	0.89 ± 0.02	1.11 ± 0.03	0.81 ± 0.01	0.91 ± 0.02

SEM, standard error of the mean (n = 4). a, b means within a row with different superscripts indicate significant differences (P < 0.05)