关键词: ITP, IgG型抗体, 糖基化

Abstract: Objective To investigate the glycosylation specificity of the IgG antibody in ITP. Methods Choose 30 healthy donors, 23 healthy pregnants and 13 ITP patients, purified the IgG antibody from serum, analysied the level of all kinds of glycosylation. Compared with healthy donor and healthy pregnants to find the specificity of the IgG antibody in ITP patients. Results ① The galacosylation of IgG antibody in ITP patients was 47.08±7.24,lower than healthy pregnants (50.93±4.91), higher than healthy donor (42.88±4.01), and the healthy pregnants were higher than healthy donor (P<0.05). ② The fucosylation in ITP patients was 81.16±6.2, lower than healthy donors (82.60±2.56) (P>0.05), higher than healthy pregnants(86.17±2.23)(P<0.05); ③The sialylation in ITP patients was 3.93±1.20, higher than healthy donors (3.69±1.19), lower than healthy pregnants (4.28±0.88)(P>0.05); ④The GlcNAc in ITP patients was 10.53±1.41, lower than healthy donors (11.54±1.76), higher than healthy pregnants (10.13±1.45)(P>0.05). Conclusion The specificity of IgG antibody in ITP patients in galacosylation and fucosylation may be the molecule base of ITP's clinic symptom.

Key words: Immune thrombocytopenic, IgG antibody, Glycosylation