Risk factors associated with noncompliance with methadone substitution therapy (MST) and relapse among chronic opiate users in an Outer London community.

Aims: The purpose of this study was to identify the risk factors associated with noncompliance with methadone substitution therapy (MST) and hence relapse in chronic opiate-dependent users, as this has major clinical implications especially in community-based detoxification programmes.

Background: Community mental health nurses (CMHNs) and other health/social care professionals need to be aware of the main risk factors associated with MST noncompliance among long-term opiate users living within their catchment areas. The sex-matched patterns of biopsychosocial risk factors can be useful predictors of the ability of clients to comply with MST and their likelihood to complete the detoxification programme.

Osmium tetroxide-potassium ferrocyanide intensification of a diaminobenzidine product obtained by photoconversion of a fluorescent label: a study of human neutrophil granules.

A diaminobenzidine posttreatment employing osmium tetroxide and potassium ferrocyanide was successfully used to intensify the diaminobenzidine stain formed by photoconversion of immunofluorescent labelling. Lactoferrin labelled granules became visible following the photoconversion process. Adequate diaminobenzidine staining was obtained after irradiating the cytospin preparations with ultraviolet light for 30-40 min.

Changes in neutrophil granule protein and cytoplasmic fibrils in human acute myeloid leukemias.

Granule protein deficiencies in morphologically mature neutrophil cells of peripheral blood from human patients with acute myeloid leukemia was demonstrated using post-embedding immunocytochemistry. Abnormal immunoreactivity of granule proteins was detected in seven of nine patients. Decreased immunoreactivity patterns were found more for the primary granule markers elastase and myeloperoxidase than for the secondary granule marker lactoferrin.

Analysis of human neutrophil granule protein composition in chronic myeloid leukaemia by immuno-electron microscopy.

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.