Oral supplementation with a combination of L-citrulline and L-arginine rapidly increases plasma L-arginine concentration and enh

#1 von Markus , 02.12.2015 10:30

Citrullin UND Arginin 1:1 gemischt ergeben bessere NO-Werte (Maximum und AUC) als jedes der beiden Supplemente alleine für sich in der Summe der beiden im Mix genommen. Zumindest bei Hasen.



(Kreis: Arginin, Dreieck: Mix)

Zitat

Oral supplementation with a combination of L-citrulline and L-arginine rapidly increases plasma L-arginine concentration and enhances NO bioavailability.

Morita M1, Hayashi T2, Ochiai M1, Maeda M3, Yamaguchi T3, Ina K3, Kuzuya M3.
Author information

Abstract
BACKGROUND:
Chronic supplementation with L-citrulline plus L-arginine has been shown to exhibit anti-atherosclerotic effects. However, the short-term action of this combination on the nitric oxide (NO)-cGMP pathway remains to be elucidated. The objective of the present study was to investigate the acute effects of a combination of oral L-citrulline and L-arginine on plasma L-arginine and NO levels, as well as on blood circulation.

METHODS:
Rats or New Zealand white rabbits were treated orally with L-citrulline, or L-arginine, or a combination of each at half dosage. Following supplementation, plasma levels of L-arginine, NOx, cGMP and changes in blood circulation were determined sequentially.
RESULTS:
L-Citrulline plus L-arginine supplementation caused a more rapid increase in plasma L-arginine levels and marked enhancement of NO bioavailability, including plasma cGMP concentrations, than with dosage with the single amino acids. Blood flow in the central ear artery in rabbits was also significantly increased by L-citrulline plus L-arginine administration as compared with the control.
CONCLUSION:
Our data show for the first time that a combination of oral L-citrulline and L-arginine effectively and rapidly augments NO-dependent responses at the acute stage. This approach may have clinical utility for the regulation of cardiovascular function in humans.



http://www.ncbi.nlm.nih.gov/pubmed/25445598

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Markus
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