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| Matos,D.M.; Rizzatti,E.G.; Garcia,A.B.; Gallo,D.A.P.; Falcão,R.P.. |
| We evaluated the expression of 10 adhesion molecules on peripheral blood tumor cells of 17 patients with chronic lymphocytic leukemia, 17 with mantle-cell lymphoma, and 13 with nodal or splenic marginal B-cell lymphoma, all in the leukemic phase and before the beginning of any therapy. The diagnosis of B-cell non-Hodgkin's lymphomas was based on cytological, histological, immunophenotypic, and molecular biology methods. The mean fluorescence intensity of the adhesion molecules in tumor cells was measured by flow cytometry of CD19-positive cells and differed amongst the types of lymphomas. Comparison of chronic lymphocytic leukemia and mantle-cell lymphoma showed that the former presented a higher expression of CD11c and CD49c, and a lower expression of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Non-Hodgkin's lymphoma; Adhesion molecules; Flow cytometry; CD49c/CD49d. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006001000011 |
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| Santana,B.A.A.; Pintão,M.C.; Lima,R.S. Abreu e; Scheucher,P.S.; Santos,G.A.S.; Garcia,A.B.; Falcão,R.P.; Rego,E.M.. |
| Acute promyelocytic leukemia (APL) is characterized by the expansion of blasts that resemble morphologically promyelocytes and harbor a chromosomal translocation involving the retinoic acid receptor a (RARa) and the promyelocytic leukemia (PML) genes on chromosomes 17 and 15, respectively. The expression of the PML/RARa fusion gene is essential for APL genesis. In fact, transgenic mice (TM) expressing PML/RARa develop a form of leukemia that mimics the hematological findings of human APL. Leukemia is diagnosed after a long latency (approximately 12 months) during which no hematological abnormality is detected in peripheral blood (pre-leukemic phase). In humans, immunophenotypic analysis of APL blasts revealed distinct features; however, the precise... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Acute promyelocytic leukemia; Acute myelogenous leukemia; Transgenic mice; Flow cytometry; Leukemogenesis. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000500008 |
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| Rego,E.M.; Garcia,A.B.; Carneiro,J.J.; Falcão,R.P.. |
| The distinction between normal and leukemic bone marrow (BM) B-precursors is essential for the diagnosis and treatment monitoring of acute lymphoblastic leukemia (ALL). In order to evaluate the potential use of quantitative fluorescence cytometry (QFC) for this distinction, we studied 21 normal individuals and 40 patients with CD10+ ALL. We characterized the age-related changes of the CD10, CD19, TdT, CD34 and CD79a densities in normal and leukemic BM. Compared to normal adults, the B-precursors from normal children expressed significantly lower values of CD34-specific antibody binding capacity (SABC) (median value of 86.6 vs 160.2 arbitrary units (a.u.) in children and adults, respectively). No significant age-related difference was observed in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acute lymphoblastic leukemia; Lymphocytes; Quantitative fluorescence cytometry; Flow cytometry; Age-related changes. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000200005 |
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