Effects of a single dose of N-carbamylglutamate on the rate of ureagenesis.

Autor: Ah Mew N; Research Center for Genetic Medicine, Children's National Medical Center, The George Washington University, Washington, DC 20010, USA. nahmew@cnmc.org, Payan I, Daikhin Y, Nissim I, Nissim I, Tuchman M, Yudkoff M
Jazyk: angličtina
Zdroj: Molecular genetics and metabolism [Mol Genet Metab] 2009 Dec; Vol. 98 (4), pp. 325-30. Date of Electronic Publication: 2009 Jul 14.
DOI: 10.1016/j.ymgme.2009.07.010
Abstrakt: We studied the effect on ureagenesis of a single dose of N-carbamylglutamate (NCG) in healthy young adults who received a constant infusion (300 min) of NaH(13)CO(3). Isotope ratio-mass spectrometry was used to measure the appearance of label in [(13)C]urea. At 90 min after initiating the H(13)CO3-infusion each subject took a single dose of NCG (50 mg/kg). In 5/6 studies the administration of NCG increased the formation of [(13)C]urea. Treatment with NCG significantly diminished the concentration of blood alanine, but not that of glutamine or arginine. The blood glucose concentration was unaffected by NCG administration. No untoward side effects were observed. The data indicate that treatment with NCG stimulates ureagenesis and could be useful in clinical settings of acute hyperammonemia of various etiologies.
Databáze: MEDLINE