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[Granular CALLA-positive acute lymphoblastic leukemia].
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One of the main criteria in the differentiation between acute lymphoblastic (ALL) and acute myeloblastic leukemias (AML) is the presence of granules in the blasts of the latter. Recently, several groups have described a form of ALL with prominent intracytoplasmatic granules (G-ALL) in the blasts.
Phenotypic similarities and differences between CALLA-positive acute lymphoblastic leukemia cells and normal marrow CALLA-positive B cell precursors.
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Expression of differentiation markers in common acute lymphoblastic leukemia (cALL) cells from 25 patients was compared with subpopulations of normal common ALL antigen (CALLA) (CD10)-positive bone marrow lymphoid cells (cBMLs). In cBML, CD10 intensity is positively correlated with CD34 (MY10) and
Neutral endopeptidase 24.11 and angiotensin converting enzyme like activity in CALLA positive and CALLA negative lymphoid cells.
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Taking advantage of the recently demonstrated identity of common acute lymphoblastic leukemia antigen (CALLA) and neutral endopeptidase EC.24.11 (NEP) the presence of this ectoenzyme on lymphoid cells has been reassessed using highly sensitive assays (cleavage of [3H]-D-Ala2-leucine-enkephalin and
Common acute lymphoplastic leukemia antigen (CALLA) and intestinal metaplasia.
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Intestinal metaplasia (IM) foci in 19 antral and 14 fundal gastric biopsies from patients with chronic atrophic gastritis were studied immunohistochemically for the presence of CALLA antigen. In only 2 cases were metaplastic glands completely negative, in 14 cases they were all positive, and in 17
Immunocytological and immunochemical analysis on the common acute lymphoblastic leukemia antigen (CALLA): evidence that CALLA on ALL cells and granulocytes are structurally related.
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The common acute lymphoblastic leukemia antigen(CALLA) on acute lymphoblastic leukemia(ALL) cells and granulocytes were compared by newly developed and other anti-CALLA monoclonal antibodies(anti-CALLA). New anti-CALLA(IF-3 through IF-7) were effectively selected by immunostaining on kidney
Distribution and modulation of a human leukemia-associated antigen (CALLA).
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CALLA is a 100,000-dalton surface glycoprotein expressed by malignant cells of patients with clinically important subtypes of acute leukemia. Incubation of human leukemic cells expressing CALLA with specific monoclonal antibody (J5) at 37 degrees C causes rapid and selective internalization and
Common acute lymphoblastic leukemia-associated antigen (CALLA)-positive B cell lymphoma.
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We analyzed the expression of common acute lymphoblastic leukemia-associated antigen (CALLA) in 134 cases of non-Hodgkin's lymphoma of the B cell type using an immunohistochemical method. The incidence of CALLA expression in B cell lymphomas was higher in follicular lymphomas (29%) than in diffuse
Circulating CALLA-positive lymphocytes exhibit circadian rhythms in man.
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Common acute lymphoblastic leukemia antigen (CALLA) is a polypeptide with a molecular weight of 100,000 daltons (P100). It has been mainly found on the membrane of leukemic lymphoblasts, but not on that of normal circulating lymphocytes. Circadian rhythmicity in circulating CALLA-positive (CALLA+)
Monoclonal antibodies to CALLA do not alter polymorphonuclear functions.
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The common acute lymphoblastic leukemia antigen (CALLA) is present on the malignant cells of most patients with acute lymphoblastic leukemia (ALL). Monoclonal antibodies (MoAbs) to CALLA have been useful for differentiating lymphoblastic from nonlymphoblastic leukemias as well as for serotherapy in
CALLA-positive myeloma: an aggressive subtype with poor survival.
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Detailed immunotyping was carried out on 21 direct myeloma bone marrow aspirates and eight human myeloma cell lines. Four previously untreated common acute lymphoblastic leukemia antigen (CALLA)-positive myeloma patients were identified and six of eight cell lines (75%) were also positive. CALLA
[Biphenotypic acute leukemia with Ph1 chromosome, M-BCR-, myeloperoxidase+, and CALLA+].
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A 63 year-old woman was referred to our hospital because of fever and increased number of blasts in the bone marrow. On physical examination she had slight hepatomegaly but no splenomegaly. Laboratory tests disclosed a hemoglobin level of 8.5 g/dl; a WBC count of 13,200/microliter with 26% blasts; a
[Characterization of murine monoclonal antibodies against the common acute leukemia antigen (CALLA)].
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This study presents two murine monoclonal antibodies which react with the Common Acute Lymphoblastic Leukemia Antigen (CALLA). Both antibodies can be used for the diagnosis of common ALL (cALL). Indirect immunofluorescence studies (FACS-analysis) showed that the antibodies react with granulocytes
Phenotypic conversion of TdT+ adult AML to CALLA+ ALL.
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A case of acute leukaemia is described in which the blast cells showed Sudan Black and terminal deoxynucleotidyl transferase (TdT) positivity at presentation and did not react with the monoclonal antibodies (McAb) My9 (anti-myeloid) and J5 (anti-CALL antigen). The myeloid lineage of these cells was
Calla positive acute lymphoblastic leukemia after etoposide-based therapy for Ewing's sarcoma.
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This is an unusual and interesting case report concerning a 10 year old boy with an initial diagnosis of Ewing's sarcoma of the right tibia. He was successfully treated with a chemotherapy regimen consisting of vincristine, cyclophosphamide (cumulative dose 7200 mg/m2), doxorubicin, etoposide
[CD10(CALLA)-negative acute lymphoblastic leukemia. A group with a bad prognosis].
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The results of 188 patients with acute lymphoblastic leukemia, studied between 1985 and 1990, showed that 8 cases were CD10 negative, Dr, and CD19 positive. These findings indicate cell dedifferentiation and poor prognosis. The patients age ranged from 2 to 30 years, with a mean of 11 years. The
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