Specific interaction between tetrandrine and Quillaja saponins in promoting permeabilization of plasma membrane in human leukemic HL-60 cells
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analyzing patterns of classroom interaction in efl classrooms in iran
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Reversible activation of NADPH oxidase in membranes of HL-60 human leukemic cells.
NADPH oxidase in membranes of undifferentiated and dimethylsulphoxide-differentiated HL-60 cells was activated by arachidonic acid (AA) in the presence of Mg2+ and a cytosolic cofactor (CF) found in differentiated HL-60 cells. Basal superoxide (O2-) formation was enhanced several-fold by addition of the stable GTP-analogue, guanosine 5'-O-(3-thiotriphosphate) (GTP gamma S), prior to AA and was ...
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BACKGROUND The NAD(P)H quinone oxidoreductase (NQO1) confers protection against semiquinones and also elicits oxidative stress. The C609T polymorphism of the NQO1 gene, designated NQO1*2, significantly reduces its enzymatic activity due to rapid degradation of protein. Since down regulation of NQO1 mRNA expression correlates with increased susceptibility for developing different types of canc...
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The cytotoxicity of diesel exhaust particles (DEPs) toward human leukemic promyelocytic cells HL-60 was examined. DEPs were toxic and cytotoxicity increased in a dose-dependent manner. All cells died with 750 microg/ml DEPs in culture media. Apoptosis occurred in HL-60 cells exposed to DEPs. The cytotoxicity of DEP extracts with organic solvents was much lower than those of DEPs and organic sol...
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Differentiation refers to the ability of cancer cells to revert to their normal counterparts, and its induction represents an important noncytotoxic therapy for leukemia, and also breast, prostate, and other solid malignancies. Flavonoids are a group of differentiation-inducing chemicals with a potentially lower toxicology profile than retinoids. Flavonoid-rich polyphenol fractions from the pom...
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ژورنال
عنوان ژورنال: Biochimica et Biophysica Acta (BBA) - Biomembranes
سال: 1997
ISSN: 0005-2736
DOI: 10.1016/s0005-2736(97)00002-3