2-Methylbutyryl-L-carnitine is not usually detected in normal individuals. The elevation of 2-methylbutyrylcarnitine suggests a deficiency of a dehydrogenase specific for isobutyryl-CoA, important in the differential diagnosis of branched chain organic acidurias by analysis of urinary organic acids and acylcarnitines in plasma or dried blood spots.
World journal of gastroenterology, 12(1), 110-113 (2006-01-28)
To determine the plasma carnitine ester profile in adult patients with ulcerative culitis (UC) and compared with healthy control subjects. Using ESI triple quadrupole tandem mass spectrometry, the carnitine ester profile was measured in 44 patients with UC and 44
Clinica chimica acta; international journal of clinical chemistry, 173(3), 263-272 (1988-04-29)
A quantitative analysis for urinary acylcarnitines in a patient with neonatal multiple acyl-CoA dehydrogenation deficiency is described. This method (liquid chromatography) can quantify twelve acylcarnitines including glutarylcarnitine and 3 isomeric acylcarnitines (butyryl-1, valeryl- and octanoylisomer) in urine. Before and up
Drugs under experimental and clinical research, 31(3), 109-114 (2005-07-22)
The pool of different carnitine derivatives is formed by carnitine, acetylcarnitine, propionylcarnitine and isovalerylcarnitine. Isovalerylcarnitine is a compound performing activities that differ from those of the other carnitine esters. Its activity on proteolytic enzymes and on the calpain system has
Prenatal diagnosis of isovaleric acidemia by fast atom bombardment and tandem mass spectrometry.
Y Shigematsu et al.
Clinica chimica acta; international journal of clinical chemistry, 203(2-3), 369-374 (1991-12-16)
The Journal of pediatrics, 110(1), 56-60 (1987-01-01)
A patient with isovaleryl-coenzyme A dehydrogenase deficiency was given a synthetic oral feed containing L-(2H3-methyl)-leucine of high isotopic purity as the only dietary precursor to the defective enzyme. Metabolites derived from this source were readily distinguished from their unlabeled endogenous
Nuestro equipo de científicos tiene experiencia en todas las áreas de investigación: Ciencias de la vida, Ciencia de los materiales, Síntesis química, Cromatografía, Analítica y muchas otras.
