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Last Updated: 2 years ago

Possible Interaction: Arginine and Ornithine, (L)-Isomer

Research Papers that Mention the Interaction

L-arginine increased plasma levels of L-arginine …+/-252 micromol/L (P<0.001), L-ornithine from 46+/-8 micromol/L to 2215+/-465 micromol/L (P<0.001), and L-citrulline from … micromol/L (P<0.001), but had no effect on plasma levels of nitrite and nitrate.
Transplantation  •  1997  |  View Paper
The effect of low L-lysine diet was amplified by add-on therapy with L-arginine , which we propose to result from competition with L-lysine at system y(+) of the blood-brain barrier and the mitochondrial L-ornithine carriers.
Brain : a journal of neurology  •  2011  |  View Paper
Large doses of l-arginine produce a toxic effect on the pancreas, at least in part, through l-ornithine.
l-ornithine levels in the blood were increased 54-fold after intraperitoneal administration of l-arginine.
Critical care medicine  •  2008  |  View Paper
In conclusion, it appears that l-ornithine , produced by arginase from l-arginine in the brain, plays an important role in the sedative and hypnotic effects of l-arginine observed during a stress response.
Amino Acids  •  2007  |  View Paper
L-Arginine uptake by IMCD cells was inhibited by the cationic amino acids L-lysine, L-homoarginine, and L-ornithine (10 mmol/l each) and unaffected by the neutral amino acids L-leucine, L-serine, and L-glutamine.
American journal of physiology. Regulatory, integrative and comparative physiology  •  2000  |  View Paper
The basic amino acids L-lysine and L-ornithine , but not D-arginine or the nitric oxide synthase inhibitors N(G)-nitro-L-arginine methyl-ester and N(G)-nitro-L-arginine, impaired L-arginine uptake.
Endocrinology  •  1999  |  View Paper
The uptake … mM L-Arg was strongly inhibited by a 20-… of L-lysine (L-Lys) and L-ornithine (L-Orn), but not by D-Arg nor any neutral amino acid, which resembles the … the gamma+ transport system operating in the nerve- and glia cell-, and synaptic plasma membranes.
Neurochemistry International  •  1998  |  View Paper
L-Lysine (10 mM) and L-ornithine (10-30 mM) slightly increased contraction and caused a rightward shift in concentration-relaxation curves in response to L-arginine.
European journal of pharmacology  •  1993  |  View Paper
The Km … for L-arginine was … L-ornithine inhibited the reaction competitively with a Ki of 985 +/- 105 microM. D-Ornithine was a weak inhibitor with a Ki of … polyamines putrescine and spermidine inhibited ADI incompetitively with a Kii of 2.8mM for putrescine and 4.3mM for spermidine.
Biological chemistry Hoppe-Seyler  •  1989  |  View Paper
The kcat/Km for l-arginine is 550-fold higher than for either l-ornithine or l-lysine, which were decarboxylated with similar efficiency.
Journal of Biological Chemistry  •  2004  |  View Paper
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