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Biomedical subjects

A Bernadou

Publications and source records attributed to A Bernadou.

At least 55 records · Page 3Linked to original sources
PubMed1978

T-lymphocyte colonies in the lymphoproliferative disorders.

Human lymphocytes from peripheral blood, bone marrow spleen and lymph nodes were cultured. Continuous phytoheamagglutinin (PHA) stimulation was used, first during a 24 h liquid preincubation, then during a 5 day culture in methylcellulose. In normal donors a rapid colony formation took place, with a mean of 124+/-82 colonies per 1 times 10(5) preincubated lymphocytes. Cells from such colonies were studied by cytology, scanning electron microscopy and rosette formation techniques; arguments favour the hypothesis that these could be T lymphocytes. Neither granulocytes nor macrophages could be grown, and no lymphoid colony formation occurred without PHA stimulation. The same technique was applied to patients with various lymphoproliferative disorders. Significant colony suppression was observed in nearly every case of chronic lymphatic leukaemia; the number of colonies was reduced in some patients with acute lymphatic leukaemia, lymphosarcoma, dysglobulinaemia and Hodgkin's disease. This lymphoid culture method should be applied to a larger number of patients to determine whether it has a classification value and/or prognostic significance. When colonies were grown in pathological states, rosette formation was identical to that of normal donors; colony formation could be due to persisting normal lymphocytes.

Adolescent↗
PubMed1977

[Bone-marrow biopsy in Hodgkin's disease].

In 349 subjects with Hodgkin's disease 520 bone marrow biopsies were carried out: 454 did not lead to the discovery of any tumour (87.5%), 66 permitted us to discover a tumour (12.5%). Among the bone marrows without Hodgkin tissue, the hematopoietic tissue was normal in 233 bone marrows (51.2%), hyperplastic in 157 bone marrows (34.7%), hypoplastic or aplastic in 64 bone marrows (14%). Eosinophilia was noted in 13% of cases, marked plasmacytosis was noted in 24%. Among the cases with a tumour, 89.2% showed a massive lesion; 10.7% showed partial lesions. The frequency of involvement was 5.4% for clinical stages I. 6.2% for stage II. 17.1% for stage III. 47.6% for stageIV. Bone marrow involvement at the start of the disease was found in 3% of cases, even in stages I and II. The involvements were especially frequent in the histological forms, stage III (19.4%) and IV (30.4%). In splenectomised patients, bone marrow involvement was 5 times more common when the spleen was also involved. 50 times more common when the liver was involved. The bone marrow which may be used to detect hematogenic spread of Hodgkin's disease is an investigation which should be carried out as a routine in the early stages of the disease and whenever a relapse is suspected.

Adult↗
PubMed1977

[Bone-marrow biopsy in chronic myeloid leukemia. Value of the initial examination].

In 31 patients with chronic myeloid leukemia, the initial bone marrow biopsy constantly showed considerable cell richness. The maturation of the granulocytes was harmonious in 52% of cases, with a predominance of myelocytes in 32% of cases, and groups of myeloblasts in 13% of cases. Eosinophilia was frequent and fairly intense. Fairly numerous loaded cells and Charcot-Leyden crystals were signs of granulocyte failure in the bone marrow. The erythroblasts were reduced, the megakaryocytes increased. Myelofibrosis was present in 45% of cases. This gave a very characteristic histological appearance. It was not possible to draw up correlations between the type of granulocyte maturation and/or the presence of myelofibrosis and, on the other hand, the clinical course of the disease, but the small number of case studied both in our series and in the literature do not permit one to carry out a proper statistical study.

Biopsy↗
PubMed1977

[Bone-marrow biopsy in chronic myeloid leukemia. Significance during development].

In 29 patients bone marrow biopsy carried out during the course of chronic myeloid luekemia, permitted the authors to divide up the patients into 5 histologically different groups according to the association of 3 parameters: the richness in granulocytes, the state of the matrix, the degree of leukoblastosis. There was, in most cases, correspondence between the histological appearance and the clinical and laboratory symptoms. This was particularly clear when the patient entered the terminal phase of the disease. 4 of the 5 histological groups had an unfavourable short-term prognosis, i.e., granulocyte hyperplasia with myelofibrosis, aplasia with normal matrix or with myelofibrosis and massive leukoblast invasion.

Adult↗
PubMed1975

Acute myelo-monocytic leukaemia: a terminal complication of paroxysmal nocturnal haemolobinuria.

The authors report a case of acute myelo-monocytic leukaemia occurring in a patient, 3 years after the beginning of a typical paroxysmal nocturnal haemoglobinuria (PNH). An intermediate phase characterized by worsening of the anaemia was observed, with disappearance of the in vitro haemolysis tests. The kinetic studies showed a replacement of the early peripheral haemolysis by a bone marrow insufficiency with intra-medullary cell death. A review of the five previous reported cases of this association show that PNH is generally a typical one, so that acute leukaemia must be considered as an unfrequent but possible complication of PNH.

Adult↗