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Biomedical subjects

B Telek

Publications and source records attributed to B Telek.

At least 37 records · Page 2Linked to original sources
PubMed1992

[Secondary acute leukemia in Hodgkin's disease].

Two secondary acute leukaemias out of 166 patients with Hodgkin's disease were detected. At a young female patient treated only with chemotherapy the acute leukaemia developed 39 months following the diagnosis of Hodgkin's disease. Phenotype of leukaemic blast cells could not be determined exactly. After a short complete remission (1,5 month) the patient died because of the progression of her leukaemic process. The other young male patient treated with radio- and chemotherapy had six years disease free interval between the diagnosis of two malignant diseases. The combined cytostatic treatment of his acute lymphoblastic leukaemia resulted complete remission that lasted for one year but later the progression of leukaemia caused death. In connection with these cases the authors reviewed the current questions of treatment related acute leukaemias in Hodgkin's disease.

Adolescent↗
PubMed1992

[Successful electroconvulsive treatment of a schizophrenic patient suffering from severe hemophilia A].

Experiences obtained with the electroconvulsive treatment of a schizophrenic patient suffering from severe haemophilia A are reported. No haemorrhagic complications were observed. According to our experiences electroconvulsive therapy can be applied also in severe haemophilia A if satisfactory replacement therapy can be ensured. Similar case has not been found in the literature.

Adult↗
PubMed1992

HTLV-related markers in a Hungarian patient with adult T-cell leukemia.

Monoclonal integration of DNA sequences related to, but not identical to HTLV-I provirus was detected in the peripheral blood lymphocytes of a Hungarian male suffering from ATL. The patient and his parents showed serological cross-reactivity with both HTLV-I and HTLV-II group-specific antigens. Restriction enzyme analysis with EcoRI, PstI, BamHI, HindIII and SacI revealed structural similarity of the provirus integrated in the DNA of ATL cells to HTLV-I but not to HTLV-II. Data suggest that this provirus and HTLV-I are similar to each other along gag and pol regions, but they are different in the env region.

Adolescent↗
PubMed1992

Nucleolar organizer regions in acute and chronic leukaemias.

A silver staining technique for nucleolar organizer regions (NORs) has been applied to bone marrow biopsies of various types of acute and chronic leukaemias. This method could be easily evaluated on resin-embedded bone marrow obtained from acute lymphocytic leukaemia (n = 12), acute myelogenous (n = 16), chronic lymphocytic (n = 16) and chronic granulocytic (n = 20) leukaemia. A significant difference (p < or = 0.1) was only found between the AgNOR numbers in nuclei of lymphocytes from acute and chronic leukaemia (mean of 1.23 to 1.40 and 1.58) and those of cells from acute and chronic myelogenous leukaemia (from a mean of 5.00 to 9.17 per nucleus). However, no significant difference was observed among cells of various types of acute and chronic myelogenous leukaemias, despite of their markedly higher staining intensity and proliferative activity. The greatest mean of AgNOR numbers was counted in monoblasts of acute myelomonocytic leukaemia. It is suggested, that higher AgNOR counts in nuclei of more malignant leukaemic cells are in parallel with their mitotic activity and could be related to their elevated cell turn-over.

Bone Marrow↗
PubMed1991

[The myelodysplastic syndrome].

Clinical data of 70 patients, treated and observed with myelodysplastic syndrome between 1977 and 1989 were analysed. Two-thirds of the patients belonged to the elder age-group and a mild female predominance was registered. With the application of complex cytochemical-histological and cytogenetical methods, correct diagnosis could be established. The clinical material included patients from different morphologic subtypes: 19 with refractory anaemia (with a longer course of the illness). 20 with sideroblastic anaemia, 26 with chronic myelomonocytic leukaemia and the remaining 5 with refractory anaemia with excess of blasts (a more progressive type of the myelodysplastic syndrome, with a short duration). The mean survival of all patients were 42 months. 45 (69%) died during this period and 12 (18.5%) among them in acute myelogenous leukaemia (mean survival: 16 month). Megakaryoblastic leukaemic transformation was observed in three patients with sideroblastic refractory anaemia. Haemorrhage and infection-sepsis, due to thrombocytopenia and/or granulocytopenia, was fatal in 30 cases. In the treatment of the myelodysplastic syndrome an appropriate supportive therapy (blood transfusion, antibiotics) has a decisive importance. A more aggressive treatment with cytostatic drugs is suggested in the progressive form of the disease of younger patients and in patients with overt acute leukaemia.

Adult↗
PubMed1990

[A case of successfully treated cyclic amegakaryocytic thrombocytopenic purpura].

The case of a patient with cyclic, acquired, periodically amegakaryocytic thrombocytopenia is described. On the base of a seemingly typical megakaryocytic thrombocytopenia ITP was diagnosed at first. He did not respond to steroid, therefore splenectomy was performed. He relapsed and thereafter severe thrombocytopenia was observed, periodically, for 8-10 days in every five-six weeks. During the cytopenic periods recognizable megakaryocytes and precursors were totally absent from the bone marrow. After the haemorrhagic periods platelet counts elevated to normal or even higher levels and the marrow was plenty of megakaryocytes. Vincristine was unsuccessful, but cyclosporine administration for a longer time was not without success. The patient has a normal platelet count since one year. No similar case of cyclic amegakaryocytic thrombocytopenia was found in the literature.

Bone Marrow Examination↗
PubMed1990

[Fatal thrombotic microangiopathy in the mother and fetus].

The appearance of thrombotic microangiopathy (thrombotic thrombocytopenic purpura, haemolytic uraemic syndrome) could have been documented in a 23 years old pregnant woman, who had been treated previously for immune-thrombocytolytic purpura. The disturbing anamnestic data caused significant delay in correct diagnosis and in starting of fresh-frozen plasma therapy, so the woman and her fetus (in utero) had been died. The specific histological microangiopathic lesions could have been well documented by the autopsy of the mother, however no such alterations could have been detected in the fetus and placenta. This latter intriguing observation might be remarkable in the evaluation of several concepts dealing with the aetiopathogenesis of thrombotic microangiopathy. The short review of literature of thrombotic microangiopathy in pregnancy and puerperial period is also given.

Female↗
PubMed1989

[Hairy cell leukemia].

Clinical experiences on seven patients suffering from hairy cell leukaemia are presented. The disease was most often identified at age above 50 and was more frequent in men. Splenomegaly and infiltration of bone marrow or spleen with tartrat resistant acid phosphatase positive lymphoid cells were detected in all cases. Splenectomy resulted complete clinical remission in six and partial remission in one patient. Two patients have died. The mean survival time is five years. The surviving patients are in good clinical remission.

Combined Modality Therapy↗
PubMed1989

Cytochemical studies in the blastic transformation of chronic granulocytic leukaemia.

The cytochemical features of blast cells were studied in 45 patients with blastic phase of chronic granulocytic leukaemia. Various degrees of Sudan black B positivity was characteristic of myeloblastic transformation (23 patients), while in the medullary blast cells of nine patients with myelomonocytic transformation the alpha-naphthyl-acetate esterase showed intensive activity. In two cases the demonstrability of beta-thromboglobulin and factor VIII-related antigen in blast cells showing otherwise PAS, acid phosphatase and alpha-naphthyl-acetate esterase activity referred to megakaryocytic transformation. In six patients with lymphoid blast crisis proliferation of the Sudan negative blast cells with different granular PAS, acid phosphatase and/or beta-glucuronidase positivity was demonstrated. In five cases the cytochemical findings of leukaemic cells indicated biphenotypic and mixed transformation, respectively.

Blast Crisis↗