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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Neuraminic acid derivatives newly discovered in humans: N-acetyl-9-O-L-lactoylneuraminic acid, N,9-O-Diacetylneuraminic acid and N-acetyl-2,3-dehydro-2-deoxyneuraminic acid.

The free and glycosidically bound acylneuraminic acids from human serum and saliva and the free acylneuraminic acids from human urine have been characterized by thin-layer chromatography and gas-liquid chromatography/ mass spectrometry. Acylneuraminic acid mixtures obtained from serum and saliva contain mainly N-acetylneuraminic acid and N-acetyl-9-O-L-lactoylneuraminic acid, whereas small amounts of N,9-O-diacetylneuraminic acid are also present. No free N,O-diacylneuraminic acids could be detected in the urine samples. None of the investigated fluids contained N-glycoloylneuraminic acid. The unsaturated N-acetyl-2,3-dehydro-2-deoxyneuraminic acid is usually a component of the free acylneuraminic acid fractions of serum, saliva and urine. The body fluids of a patient with sialuria contain the same O-acylated and unsaturated N-acetyl neuraminic acid derivatives as mentioned above, but the total amounts of free acylneuraminic acids in these materials are significantly higher than found for normal persons.[1]

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