Summary
In this study immuno-electron microscopy was used to assay, semi-quantitatively, the granule contents of elastase, lactoferrin, lysozyme and myeloperoxidase in human peripheral blood neutrophils from 13 chronic myeloid leukaemia patients in the chronic phase of the disease and from normal non-smoking donors. The fixation conditions that adequately preserved the antibody binding capacities of these antigens and reasonably preserved the ultrastructure of the neutrophils were selected by light-microscopic immunoperoxidase cytochemistry on cytospin smears. Immunogold cytochemistry on LR White resin sections localised elastase and myeloperoxidase to the primary granules, lactoferrin to the secondary granules and lysozyme to both types of granule. When applicable, peroxidase cytochemistry was combined with immunogold staining making it easier to distinguish the primary from the secondary granules. A comparison of the immunolabelling density values obtained for the leukaemic and normal states revealed no significant abnormalities in the immunoreactivity patterns for any of these neutrophil granule antigens in the leukaemic patients. All 13 patients gave normal immunostaining reactivities for these neutrophil granule proteins. Consequently the distribution patterns of these proteins, as shown in this study, cannot be used as indices in distinguishing chronic myeloid leukaemic neutrophils from normal neutrophils.
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Mutasa, H.C.F. Analysis of human neutrophil granule protein composition in chronic myeloid leukaemia by immuno-electron microscopy. Cell Tissue Res. 258, 111–117 (1989). https://doi.org/10.1007/BF00223150
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DOI: https://doi.org/10.1007/BF00223150