Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0023418 (leukemia)
 93,477 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

A reproducible metastatic growth of K-562 human myelogenous leukemia cells occurred in immunodeficient athymic (nude) mice. Although previous studies have shown that K-562 cells grow as local subcutaneous myelosarcomas which continuously release leukemia cells into the systemic circulation in adult mice, metastases were not observed. However, the subcutaneous "priming" of newborn nude mice resulted in the metastatic proliferation of leukemia cells in the lungs, kidneys, brain, and lymph nodes. Three sc injections of 5 X 10(6) K-562 cells on days 1, 7, and 14 of life produced metastases in 51% of the mice. When the initial series of injections was followed by iv injections on days 35 and 42, the incidence of metastases increased to 67%. Karyotypes demonstrated that the tumor cells retained the same human chromosome markers as those in the human patient and tissue culture. These procedures may provide a model for study of the mechanisms of metastases and for chemotherapeutic and immunotherapeutic trials against metastases of neoplasms of human origin.
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PMID:Reproducible metastatic growth of K-562 human myelogenous leukemia cells in nude mice. 28 25

Cytopenia were recognized in three cats infected with feline leukemia virus. In one cat, marrow blast cells were increased in number, and a diagnosis of aleukemic leukemia was made. The disease progressed slowly for 3 1/2 months before terminating in acute myelomonocytic leukemia, recognized as a blast crisis in blood. In the other two cats, neutropenia and altered granulopoiesis in bone marrow preceded development of myeloid leukemia.
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PMID:Hematologic abnormalities preceding myeloid leukemia in three cats. 28 25

12-O-Tetradecanoylphorbol-13-acetate, a potent promoter of carcinogenesis in mouse skin, enhanced differentiation of cultured mouse myeloid leukemia cells (M1) induced by human urinary protein or by lipopolysaccharide from Salmonella typhosa. 12-O-Tetradecanoylphorbol-13-acetate enhanced differentiation of all the markers tested, such as phagocytosis, Fc rosette formation, lysozyme activity, and morphological change. Other potent tumor-promoting macrocyclic plant diterpenes also enhanced the induction of differentiation, but no-tumor-promoting diterpenes did not. These findings were in marked contrast with generally accepted findings on the inhibitory effect of 12-O-tetradecanoylphorbol-13-acetate on terminal differentiation observed in other cell culture systems but consistent with the observations with some kinds of leukemia cells.
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PMID:Enhancing effect of phorbol esters on induction of differentiation of mouse myeloid leukemia cells by human urinary protein and lipopolysaccharide. 29 79

On the basis of five observations of adult patients with the clinical feature of mature cellular leukaemia which proved to be therapy-refractory and which was characterized by a rapid course is referred to the necessity of the differentiation of such cases from the classical myeloic leukaemia. The cardinal symptoms of this type of disease, which probably is identified with the cases described in literature as atypical chronic myelosis, as paraneutrophil leukaemia or as acute myelofibrosis, and also shows common features with the juvenile chronic myelosis, are, apart from the mature cellular differential blood picture a short life expectancy (less than 1 year), an initial thrombocytopenia, a normal or increased activity of the alkaline granulocyte phosphatase, the lack of Ph1-chromosome as well as the bad therapeutic reaction to busulfan. The observation of the simultaneously existing fibroses of the bone marrow as well as of the final increase of immature blasts induced the classification of the clinical picture as a special form of the myeloproliferative syndrome.
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PMID:[Acute mature myelocytic leukemia as a form of the myeloproliferative syndrome]. 29 99

Among the patients with chronic myeloproliferative diseases including clinical symptoms of chronic myelogenous leukemia--CML--two varying compartments with substantially differing histology of hemopoiesis were found: one with predominating granulopoiesis for which the usual term of chronic granylocytic leukemia--CGL--seems inadequate. The other with proliferation of granylopoiesis and megakaryopoiesis as a neoplasia with a mixed cellularity is observed to be different in its clinical course: there are often a leukemic or subleukemic cell counts, but mostly considerable increased platelets in the peripheral blood; there is a prolonged period of latency, a higher age group, an infrequent occurrence of blastic crisis and a regular outcome into myelofibrosis. This entity of chronic megakaryocytic granulocytic myelosis--CMGM--can be seen very frequently among myeloproliferative diseases. Among a total of 718 core biopsies from the bone marrow the CMGM-patients are up to 29% compared with 21% of the typical one-cell-line disease CGL. The Ph1-chromosome may be presented in the CMGM-entity likewise.
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PMID:Histopathology of bone marrow in human chronic leukemias. 29 16

A 47-year-old woman with a diagnosis of myelogenous leukemia presented with poor vision secondary to bilateral exudative retinal detachments. Chemotherapy improved her leukemia status and her vision improved but her retinal pigment epithelium became diffusely mottled and irregular, presumably because of a toxic effect from the exudative subretinal fluid. Clinical and fluorescein findings are presented.
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PMID:Myelogenous leukemia and bilateral exudative retinal detachment. 29 44

The BN rat myelocytic leukemia was transferred to (LEW x BN)F1 rats. In the F1 host the growth, dissemination, and response of this leukemia to chemotherapy were predictable, stable through serial passage, and similar to this leukemia's behavior in the parent strain. Rats given 10(7) spleen cells iv from leukemic donors died in about 3 weeks if untreated or responded to cytosine arabinoside even after overt leukemia had developed. This animal leukemia is useful as a model for human acute myelocytic leukemia.
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PMID:BN rat myeloid leukemia transferred to the (LEW x BN)F1 rat. 30 45

Three lines of rat leukemia, DBLA-1, -6, and -9, were studied serologically by complement-dependent cytotoxicity test. DBLA-1, -6, and -9 were killed by anti-lymphocyte sera, anti-Thy-1.1 sera, and rabbit anti-rat brain sera absorbed with AKR/J brain. However, anti-T and anti-B lymphocyte sera had no cytotoxic effect on DBLA-1, -6, and -9. Furthermore, DBLA-6 and -9 did not absorb the cytotoxic activity of anti-T serum on thymocytes, while DBLA-1 slightly absorbed the cytotoxic activity. These results indicate that DBLA-1, -6, and -9 are of lymphoid origin and possess rat Thy-1 antigens, but lack mature T-lymphocyte antigens. On the other hand, peroxidase-positive myelogenous leukemia L1005 failed to react with any of the antisera used.
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PMID:Serological characterization of rat leukemia lines, DBLA-1, -6, and -9. 31 51

Immunization of rabbits with rat leukemia DBLA-6 resulted in the production of antisera which upon absorption with hepatoma cells were specific for rat immature T lymphocytes. The antisera showed cytotoxicity against thymocytes and killed 75 approximately 90% of them, whereas the antisera had no cytotoxic effect on peripheral lymphocytes from the spleen, lymph node, and bone marrow of rats. The antisera also showed cytotoxicity against rat lymphatic leukemia and lymphoma cells of all lines tested but not against rat myelogenous leukemia and erythroleukemia cells. The cytotoxic activity of anti-DBLA-6 serum was completely absorbed with rat brain or thymocytes.
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PMID:Heterologous antiserum to a subpopulation of thymocytes and lymphomas in rats. 31 55

Radiation therapy is used as total body treatment in preparation of the acute myelogenous leukemia (AML) patient for bone marrow transplantation. Many AML patients will have residual leukemia cells at the time of total body irradiation (TBI). In the present study, the effect of TBI on leukemic myeloid cells was compared to the effect on normal marrow granulocytic stem cells (CFUc) in vitro. Little difference from that of normal CFUc was found in the radiosensitivity of two mouse myeloid leukemia cell lines. The effect of TBI on growth of WEHI-3 or J774 cells in millipore diffusion chambers was stimulatory. These AML cell lines as well as others derived from Friend or Abelson virus infected in vitro long term mouse marrow cultures showed some morphologic differentiation by 7 days growth in diffusion chambers in irradiated heterologous rat hosts, but immature cells predominated by day 21. Thus, evidence in murine models of AML indicates that residual AML cells surviving chemotherapy will show no greater susceptibility to radiation killing compared to normal stem cells and will rapidly repopulate the irradiated host.
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PMID:Cell biological effects of total body irradiation on growth and differentiation of acute myelogenous leukemia cells compared to normal bone marrow. 40 Jun 90


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