Abstract |
The N- glycans present on the total mixture of serum glycoproteins (serum N-glycome) were analyzed in 24 subjects with congenital disorder of glycosylation type I (CDG-I) and 7 healthy, age-matched individuals. No new N- glycan structures were observed in the sera of CDG-I patients as compared with normal sera. However, we observed in all subtypes a significantly increased degree of core alpha-1,6-fucosylation of the biantennary glycans as compared to normal, as well as a significant decrease in the amount of triantennary glycans. These serum N-glycome changes appear to be a milder manifestation of some of the changes observed in adult liver cirrhosis patients, which is compatible with the reported steatosis and fibrosis in CDG-I patients. In the CDG-Ia subgroup, the extent of the serum N-glycome changes correlates with the aberration of the serum transferrin isoelectric focusing pattern, which measures the severity of the lack of entire N- glycan chains (primary consequence of CDG-I) in the liver and is the standard diagnostic test for this category of inherited diseases.
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Authors | Nico Callewaert, Els Schollen, Annelies Vanhecke, Jaak Jaeken, Gert Matthijs, Roland Contreras |
Journal | Glycobiology
(Glycobiology)
Vol. 13
Issue 5
Pg. 367-75
(May 2003)
ISSN: 0959-6658 [Print] England |
PMID | 12626389
(Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Glycoproteins
- Oligosaccharides
- Polysaccharides
- Transferrin
- asialooligosaccharides
- Fucose
- Glycoside Hydrolases
- Neuraminidase
- Phosphotransferases (Phosphomutases)
- phosphomannomutase
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Topics |
- Adult
- Carbohydrate Metabolism, Inborn Errors
(blood, metabolism)
- Fucose
(chemistry, metabolism)
- Glycoproteins
(blood, chemistry, metabolism)
- Glycoside Hydrolases
- Glycosylation
- Humans
- Isoelectric Focusing
- Liver Cirrhosis
(blood, metabolism)
- Neuraminidase
- Oligosaccharides
(analysis)
- Phosphotransferases (Phosphomutases)
(deficiency)
- Polysaccharides
(analysis, blood)
- Sequence Analysis, DNA
- Transferrin
(analysis, metabolism)
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