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Br J Haematol. 2004 Jul;126(2):252-4.

Neutrophil CD177 (NB1 gp, HNA-2a) expression is increased in severe bacterial infections and polycythaemia vera.

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Institute for Clinical Immunology and Transfusion Medicine & Department of Internal Medicine, Justus-Liebig University, Giessen, Germany.


The NB1 glycoprotein (CD177, HNA-2a antigen) is exclusively expressed on human neutrophils. As the clinical significance of CD177 expression is unknown, we investigated its expression in healthy individuals before and after stimulation with granulocyte colony-stimulating factor (G-CSF), in patients with rheumatoid arthritis, viral hepatitis, severe bacterial infections and polycythaemia vera. Expression was quantitatively determined by flow cytometry and by real time polymerase chain reaction. Only G-CSF-stimulated individuals and patients with severe bacterial infections and polycythaemia showed a significantly (P < 0.001) increased CD177 expression compared with healthy individuals, indicating that neutrophil CD177 expression can increase significantly in certain clinical conditions.

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