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Registros recuperados: 3
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Age-related changes of the multidrug resistance P-glycoprotein function in normal human peripheral blood T lymphocytes BJMBR
Machado,C.G.; Calado,R.T.; Garcia,A.B.; Falcão,R.P..
The multidrug resistance P-glycoprotein is a transmembrane efflux pump expressed by lymphocytes and is involved in their cytolytic activity. In the present study, we investigated the age-related changes of P-glycoprotein function in normal peripheral blood lymphocytes. Blood samples from 90 normal volunteers (age range, 0 to 86 years) were analyzed. P-glycoprotein function was assessed by the flow cytometric rhodamine 123 assay. P-glycoprotein function was highest in cord blood and progressively declined with age in peripheral blood T CD4+ and CD8+ cells. In contrast, P-glycoprotein function did not vary with age in CD19+ B or CD16+CD56+ natural killer cells. These data suggest that the decline in P-glycoprotein function in T CD4+ and CD8+ lymphocytes as a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: P-glycoprotein; Multidrug resistance; Lymphocytes; Rhodamine 123; Flow cytometry.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003001200006
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HFE gene mutations in coronary atherothrombotic disease BJMBR
Calado,R.T.; Franco,R.F.; Pazin-Filho,A.; Simões,M.V.; Marin-Neto,J.A.; Zago,M.A..
Although iron can catalyze the production of free radicals involved in LDL lipid peroxidation, the contribution of iron overload to atherosclerosis remains controversial. The description of two mutations in the HFE gene (Cys282Tyr and His63Asp) related to hereditary hemochromatosis provides an opportunity to address the question of the association between iron overload and atherosclerosis. We investigated the prevalence of HFE mutations in 160 survivors of myocardial infarction with angiographically demonstrated severe coronary atherosclerotic disease, and in 160 age-, gender- and race-matched healthy control subjects. PCR amplification of genomic DNA followed by RsaI and BclI restriction enzyme digestion was used to determine the genotypes. The frequency...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hemochromatosis; HFE gene; Atherosclerosis; Myocardial infarction; Risk factor.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000300007
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Telomere length analysis in monoclonal B-cell lymphocytosis and chronic lymphocytic leukemia Binet A BJMBR
Furtado,F.M.; Scheucher,P.S.; Santana,B.A.; Scatena,N.F.; Calado,R.T.; Rego,E.M.; Matos,D.M.; Falcão,R.P..
Monoclonal B-cell lymphocytosis (MBL) is an asymptomatic clinical entity characterized by the proliferation of monoclonal B cells not meeting the diagnosis criteria for chronic lymphocytic leukemia (CLL). MBL may precede the development of CLL, but the molecular mechanisms responsible for disease progression and evolution are not completely known. Telomeres are usually short in CLL and their attrition may contribute to disease evolution. Here, we determined the telomere lengths of CD5+CD19+ cells in MBL, CLL, and healthy volunteers. Twenty-one CLL patients, 11 subjects with high-count MBL, and 6 with low-count MBL were enrolled. Two hundred and sixty-one healthy volunteers aged 0 to 88 years were studied as controls. After diagnosis confirmation, a flow...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Chronic lymphocytic leukemia; Monoclonal B-cell lymphocytosis; Telomere length.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017000500603
Registros recuperados: 3
Primeira ... 1 ... Última
 

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