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Biomedical subjects

D Sainty

Publications and source records attributed to D Sainty.

At least 109 records · Page 6Linked to original sources

T-lymphocyte subpopulations identified by monoclonal antibodies after human bone-marrow transplantation.

Peripheral T-lymphocyte reconstitution after bone-marrow transplantation, 12 allogeneic and 13 autologous, was studied by indirect immunofluorescence assay using mouse monoclonal antibodies. Abnormal counts were detected in the two major sub-populations of T-cells i.e. helper and T cytotoxic-suppressor lymphocytes, defined by monoclonal antibodies (alpha Leu 3a and B 9.2), and in DR antigen-positive T-cells. The pattern of T-lymphocytes replenishment was identical for both types of transplant, and was not affected by Graft Versus Host disease (GVHD).

Antibodies, Monoclonal↗

[Morphological study of 4 cases of T lymphoma].

Modern physiopathological studies of the lymphoid system have enabled accurate immunological identification of the different B lymphopathies. Concurrently, the categorization of T proliferations is evolving. In addition to the morphologically well known categories of T lymphomas, three different histological entities are at present termed T lymphomas by anglo-saxon authors: lymphoma with pleiomorphic cytology, or large cell lymphoma, whose identification seems to be the most difficult; Pinkus lymphoma, with subcutaneous clinical localizations which differ from the initial sites of lymphomas, composed of lymphoid cells whose morphology is very characteristic; Lennert lymphoma, whose precise nature is still under debate, but that has been immunologically identified as a T neoplasm by some American authors. We report four observations that exemplify the complex identification of these lymphomas. One case is a Lennert lymphoma which developed into T immunoblastic lymphoma rising the problem of the relationships between these two diseases. The link between these diverse histological pictures is the T immunological identification of the proliferation for which the routine use of monoclonal antibodies should prove helpful.

Adult↗

[Peripheral T cell lymphoma].

We report three cases of malignant T cell lymphoma of peripheral T lymphocyte origin. This morphological entity was first described by Lennert and Waldron. The diagnosis based on morphological criteria only is difficult because of the many lymphoid malignancies. Immunological characterization is necessary for the identification of the proliferative T lymphocyte subset with a panel of T monoclonal antibodies. Correlations were established between immunological phenotype and clinical and evolutive aspects which are particularly varied in T lymphoproliferative disorders.

Adult↗

[Giant cell immunoblastic malignant lymphoma following a myeloma].

The possible development of giant-cell lymphoma in the course of a B cell monoclonal lymphopathy is well documented. This occurrence is however exceptional in the course of myeloma. We describe a case in which typing of cell populations established the immunologic identity between the myelomatous proliferation and the sarcomatous process.

Aged↗

[Richter's syndrome. A morphological study apropos of 3 cases].

The occurrence of a large cell lymphoma in the course of chronic lymphocytic leukemia is rare and its evolution is fatal at short term. This is the definition of Richter's syndrome. The authors report three cases documented by cytology, histology. The immunological study was performed for one of these by typing on a suspension of fresh bone marrow and lymph node cells. It showed the immunological identity of the chronic phase and the transformation phase (Richter's syndrome). These findings are in line with recent studies showing the immunocellular filiation of the two hemopathies despite the morphological differences, the transformation phase showing the differentiation of the B clone of the chronic phase.

Aged↗

[Preleukemic erythroblastopenia].

In adults, chronic aquired pure red cell aplasia (CAPRCA) with no thymic tumor may be idiopathic, fitting the description of Kaznelson syndrome, or a preleukemic disorder which will develop into a malignant hemopathy. Diagnosis of the second possibility is difficult to establish at onset. We report a case with a course suggestive of a possible relationship between CAPRCA and acute leukemia.

Acute Disease↗

[Pinkus' lymphoma. Review of the literature apropos of a case].

We report one case of T cell type lymphoma with multilobated nuclei, a distinct variant described by G. Pinkus. The soft palate and subcutaneous tissues were the successive localisations. Despite an aggressive chemotherapy with autologous bone marrow transplantation, a fatal course happened in 18 months. This entity is different from cutaneous lymphomas, mantle zone lymphomas of Waldron, Japanese T lymphomas and from the cases described recently by Weisenburger. The link between these different anatomo-clinical and histological varieties is their belonging to the T cell line.

Female↗

[Composite lymphoma. Review of the literature].

The authors report of a case of composite lymphoma, defined by the coexistence of two clearly different types of malignant lymphoma in a single lymph node or splenic site. A review of the literature led to the discovery of 20 cases of this type of lymphoma. The macroscopic and histological lesions are analysed.

Adult↗

[Adult Mediterranean visceral leishmaniasis: report of 12 cases (author's transl)].

Mediterranean visceral leishmaniasis is not only a children disease. We observed 12 adult cases since 1971. Clinical presentation usually associates anarchic fever and splenomegaly, with anaemia, leucopenia, increased sedimentation rate and hypergammaglobulinemia. We must think to kala-azar, specially after a stay in an endemic country (mediterranean area), ask for parasites on bone-marrow smears and more often immunological diagnosis. Spontaneously fatal, the disease is easily cured by antimony derivatives.

Adolescent↗