open access

https://hdl.handle.net/2115/28276

Detection of altered N-glycan profiles in whole serum from rheumatoid arthritis patients

英語

LC–MS

2007-06-15

Elsevier B.V.

Journal of Chromatography B

853(1-2)

133-137

Altered N-glycosylation occurs in many diseases. In rheumatoid arthritis (RA), for example, reduction in galactose residues in IgG and an increase in fucose residues in α1-acid glycoprotein have been observed. To further analyse N-glycans in disease, we show N-glycan profiling from whole serum employing reversed phase high performance liquid chromatography/negative-ion mode by sonic spray ionization ion trap mass spectrometry with pyridylamination. Profiles from female 15 RA patients and 18 aged-matched healthy women were compared. The most significant change seen in RA was decreased levels of mono-galactosyl bi-antennary N-glycans, in agreement with the previous reports regarding IgG. We also show previously unreported differences between isomers and increased tri-antennary oligosaccharides. These results indicate that LC–MS analysis of whole serum N-glycans can identify N-glycan alterations in RA and that this is a promising method both for studies of RA mechanisms and diagnosis.

学術雑誌論文

Accepted Manuscript

1570-0232