Cited by 140Nitric Oxide and Endothelin EffectsCardiovascular Health and Disease PreventionBiochemical effects in animals

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

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Morita, Masahiko, Hayashi, Toshio, Ochiai, Masayuki, Maeda, Morihiko, Yamaguchi, Tomoe, Ina, Koichiro, Kuzuya, Masafumi·2014·Biochemical and Biophysical Research Communications

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.

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Crossref · 10.1016/j.bbrc.2014.10.029

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Authors
Morita, M., Hayashi, T., Ochiai, M., Maeda, M., Yamaguchi, T., Ina, K., & Kuzuya, M.
Affiliations
Nagoya University (JP)
Corresponding author
Hayashi, Toshio
Venue
Biochemical and Biophysical Research Communications
Publisher
Elsevier BV
Published
2014-11
Volume
454
Issue
1
Pages
53-57
ISSN
0006-291X (ISSN-L)
OpenAlex
W2058486417
Cited by
140
References
36
Citations by year
2026: 14 · 2025: 8 · 2024: 14 · 2023: 13 · 2022: 16 · 2021: 16 · 2020: 17 · 2019: 17 · 2018: 10 · 2017: 7 · 2016: 6 · 2015: 2
FWCI
3.32
Type
journal article
Language
en
Open access
Locations
  • Biochemical and Biophysical Research Communications (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
Funders
KYOWA HAKKO BIO CO., LTD
Topics
  • Health Sciences › Medicine › Physiology › Nitric Oxide and Endothelin Effects
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Health and Disease Prevention
  • Health Sciences › Medicine › Physiology › Biochemical effects in animals
Keywords
citrulline, L-arginine, amino acid supplementation, nitric oxide bioavailability, nitric oxide-cGMP pathway, cyclic GMP, blood flow, ear artery, cardiovascular function, atherosclerosis
MeSH terms
Administration, Oral, Animals, Arginine, Biological Availability, Citrulline, Drug Synergism, Cyclic GMP, Humans, Male, Nitric Oxide, Rabbits, Signal Transduction, Rats, Sprague-Dawley, Dietary Supplements, Atherosclerosis, Rats

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