The Claim
Intravenous infusion of 0.5 mmol/kg of lysine monohydrochloride in healthy children aged 10–14 years is associated with a significant increase in blood ammonia levels, elevated plasma ornithine and arginine, and increased urinary excretion of homocitrulline, putrescine, and orotic acid, suggesting transient inhibition of mitochondrial ornithine transport and ornithine transcarbamylase activity within the urea cycle.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
When healthy children aged 10–14 years receive an intravenous dose of 0.5 mmol/kg of lysine monohydrochloride, their blood ammonia levels rise, plasma ornithine and arginine increase, and they excrete more homocitrulline, putrescine, and orotic acid in urine, indicating a temporary reduction in the function of mitochondrial ornithine transport and ornithine transcarbamylase in the urea cycle.
See the scientific wording
Intravenous infusion of 0.5 mmol/kg of lysine monohydrochloride in healthy children aged 10–14 years is associated with a significant increase in blood ammonia levels, elevated plasma ornithine and arginine, and increased urinary excretion of homocitrulline, putrescine, and orotic acid, suggesting transient inhibition of mitochondrial ornithine transport and ornithine transcarbamylase activity within the urea cycle.
Lysine blocks the entry of ornithine into liver mitochondria and stops an enzyme from using ornithine to make citrulline. This causes ornithine and ammonia to build up, and the cell redirects excess chemicals into making orotic acid and homocitrulline, which get flushed out in urine. Arginine also builds up because another enzyme that breaks it down gets blocked.
What the research says
1 studyStudy: Inhibitory effect of intravenous lysine infusion on urea cycle metabolism
When kids got a special lysine IV drip, their bodies showed signs they couldn't process ammonia properly for a little while — ammonia went up, and some unusual chemicals showed up in their urine, which means their liver's ammonia-cleaning system got temporarily stuck.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.