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D H Wright

Publications and source records attributed to D H Wright.

At least 199 records · Page 11Linked to original sources
PubMed1968

Lipid content of malignant lymphomas.

Lipid staining, using oil red 0 and Sudan black B stain, was carried out on frozen sections of formalin-fixed tumour tissue from 142 cases of malignant lymphoma. Most cases of Burkitt's tumour contained abundant coarse lipid droplets both within the cytoplasm of the lymphoid cells and within non-neoplastic histiocytes scattered throughout the tumour. Lymphocytic lymphomas contained little stainable fat. Histiocytic and stem-cell lymphomas were almost equally divided between those containing abundant lipid droplets and those devoid of lipid. It is suggested that the demonstration of abundant cytoplasmic lipid droplets may assist in the diagnosis of Burkitt's tumour although this feature is not in itself diagnostic. The significance of the lipid droplets in the cells of Burkitt's tumour is discussed in relation to the histogenesis of the tumour.

Adolescent↗
PubMed1966

Ribonucleic acid content of Burkitt tumour cells.

Methyl-green-pyronin-Y staining was performed on 57 biopsies of Burkitt's tumour and 62 biopsies from other types of malignant lymphoma. The specificity of the pyronin staining for ribonucleic acid (RNA) was controlled by staining duplicate slides previously digested in ribonuclease. Burkitt's tumour cells have a higher cytoplasmic content of RNA than the cells of most other malignant lymphomas. The results of acridine orange staining of a smaller number of biopsies support these findings.

Aniline Compounds↗
PubMedDate not supplied

Phenotypic analysis of an established cell line derived from a patient with Hodgkin's disease (HD).

This report describes the phenotypic analysis of a cell line obtained from a female patient with the nodular sclerosing subtype of Hodgkin's disease (HD). The cell line has a neoplastic karyotype and is stable in culture in the absence of feeder layers or growth factors. Phenotypic analysis of this cell line shows that it cannot easily be characterized as either a lymphocyte, macrophage or granulocyte but resembles in its characteristics certain HD lines already described in the literature. The cell line carries the antigen defined by the Ki-1 monoclonal antibody, shows myeloid markers on a proportion of cells and has cytoplasmic UCH-T1.

Acid Phosphatase↗
PubMedDate not supplied

Phenotypic heterogeneity displayed by T-non Hodgkin's lymphoma (T-NHL) cells dispersed from diagnostic lymph node biopsies.

In this communication we present the results of the study of the surface antigen expression of cells dispersed from 19 fresh lymph node biopsies. All cases subsequently received a histological diagnosis of T-cell lymphoma (T-NHL). The monoclonal antibody (Mab) panel employed for surface staining of viable cells contained reagents reactive with the sheep red blood cell receptor (OKT11) and T3-receptor associated determinants (UCHT1, OKT3) and a range of surface antigens found on subsets of T-cells. These antibodies are characterized according to their CD group as allocated by the First and Second Monoclonal Antibody Workshops. Cells were also stained with Mabs reactive with MHC class II subregion products. All 19 cases displayed marked heterogeneity for both pan-T-cell and T-subset antigens. An observation which is significant in terms of the routine diagnosis of T-NHL and with regard to the rational classification of node-based tumours of T-cell origin. Unlike resting peripheral blood T-cells, MHC class II subregion products were expressed on most of the cases examined though Tu22, directed towards a monomorphic determinant of HLA-DQ, stained fewer cells than other antibodies. Aberrant expression of MHC class II on lymphoma cells may reflect the activation of the tumour population.

Antibodies, Monoclonal↗
PubMedDate not supplied

An investigation of Ki-1 positive large cell lymphoma with antibodies reactive with tissue macrophages.

The diagnosis of true histiocytic lymphoma (THL) represents one of the most difficult and controversial areas of lymph node pathology. Recently, Stein et al. (1985) have demonstrated that a series of tumours presenting with morphological and immunocytochemical features, previously considered as being indicative of THL, share antigenic markers with Reed-Sternberg and mononuclear Hodgkin's cells and, therefore, may be derived from lymphocytes, rather than histiocytes. In this study we have re-investigated some of these cases with a panel of monoclonal antibodies variously reactive with macrophages. Although all cases contain a heavy infiltrate of reactive histiocytes the tumour populations are negative for histiocyte antigens.

Antibodies↗
PubMedDate not supplied

Correlation between histology and immunophenotype in a series of 322 cases of non-Hodgkin's lymphoma.

The non-Hodgkin's lymphomas (NHL) are a heterogeneous group of lymphoid neoplasms displaying a wide variation in cell morphology, histological patterns, immunological phenotype and prognosis. In this paper we compare the results of phenotypic investigation of 322 tissue biopsies with the histology based on the Kiel classification. Immunological analysis revealed that 81 per cent of these tumours were of B cell origin, 12 per cent of T cell origin and the remaining 7 per cent could not be characterized as representing either cell lineage. This last group included a number of cases which had received a histological diagnosis of true histiocytic lymphoma. The original morphological diagnosis, based on routine haematoxylin and eosion sections correlated with the immunologically determined phenotype in 86 and 93 per cent of the T- and B-cell cases respectively. The B cell tumours were phenotypically heterogenous with respect to immunoglobulin (Ig) heavy chain and B lymphocyte subset marker expression. IgG was most often found associated with NHL of cb/cc histology and a small subgroup of lymphocytic NHL. IgA expression was uncommon and occurred in combination with IgD and G in three cases and alone in two cases of NHL. The most common immunoglobulin isotype expressed was IgM this isotype occurred with IgD most often in lymphocytic and centrocytic NHL and less often in tumours of cb/cc histology. Whilst greater than 90 per cent of the lymphocytic NHLs expressed the CD5 antigen, between 20 and 75 per cent of B-cell tumours of other histologies also expressed this epitope. The CD10 antigen and the epitope recognized by the monoclonal reagent FMC7 were widely distributed on tumour cells from all histologies. TdT expression commonly regarded as a marker for immature cells was found in one case of follicle centre cell lymphoma. All cases of T cell NHL displayed marked heterogeneity for both pan T and T subset antigens which is significant in terms of the routine diagnosis of T NHL and with regard to the rational classification of node based T NHL. Unlike resting peripheral blood T cells, MHC class II, OKT 10 and CD25 epitopes were expressed reflecting activation of tumour populations.(ABSTRACT TRUNCATED AT 400 WORDS)

Antibodies, Monoclonal↗
PubMedDate not supplied

Identification of peanut agglutinin binding glycoproteins restricted to Hodgkin's disease-derived cell lines.

Peanut agglutinin (PNA) binding glycoproteins from four Hodgkin's disease (HD)-derived cell lines and a variety of cell lines/peripheral blood cells representative of the lymphoid and myeloid lineages were identified by probing nitrocellulose membranes of SDS-PAGE separated NP40 solubilized cellular glycoproteins with [125I]-labelled PNA. The two Hodgkin's cell lines Ho and L428 demonstrated the most heterogeneous glycoprotein profiles each expressing 15 PNA binding glycoproteins, respectively. The two remaining Hodgkin's lines Co and L591 expressed only four glycoproteins each and these were all also commonly expressed by Ho and L428. Comparative analysis with all other cell types studied revealed the expression of five glycoproteins restricted to Ho (gp42, gp40, gp38, gp24 and gp22) and six restricted to L428 (gp180, gp75, gp40, gp38, gp24 and gp22). Four of these, gp40, gp38, gp24 and gp22 were commonly expressed by both Ho and L428. Of cell lines of myeloid lineage studied only the erythroleukemia cell line K562 expressed detectable glycoproteins also expressed by some of the Hodgkin's cell lines (gp110, gp96, gp50 and gp45). Only one glycoprotein, gp20 expressed by Ho was also commonly expressed by normal peripheral blood granulocytes. This limited study has thus succeeded in demonstrating for the range of cell types studied, that some glycoproteins with terminal D-galactose beta (1----3) N-acetyl galactosamine oligosaccharide sequences are apparently restricted to two of the HD cell lines. Moreover, the heterogeneous glycoprotein profiles obtained for the HD cell lines Ho and L428 suggests that galactosylation processes in these two cell lines is aberrant.

Arachis↗