Description_x000D_ Application_x000D_ L-Ornithine monohydrochloride has been used to study the blocking effect of L-ornithine on the transport system that carries L-arginine for the overproduction of nitric oxide during lipopolysaccharide induced endotoxemia in rat model. It has also been used in decarboxylation test of amino acids._x000D_ Packaging_x000D_ 1 kg in poly bottle_x000D_ 10 mg in glass bottle_x000D_ 5, 25, 100 g in poly bottle_x000D_ Biochem/physiol Actions_x000D_ L-Ornithine is a product of arginase degradation and plays an important role in ammonia metabolism via the urea cycle. In mammals, ornithine serves as a precursor for polyamines and proline biosynthesis. Spermine synthesized from ornithine, is an abundant polyamine observed in tumors such as breast carcinomas. Administration of L-ornithine is known to improve subjective index of sleep quality. L-ornithine reduces the cortisol/DHEA-S (dehydroepiandrosterone) ratio, that is associated with stress. In mice, L-ornithine is found to affect the levels of plasma growth hormone, corticosterone and melatonin levels in mice._x000D_ Other Notes_x000D_ Product of arginine degradation by arginase_x000D_ Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. O2375.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.