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leukemia/triacylglycerol
Länken sparas på Urklipp
Sida 1 från 23 resultat
Peroxisome proliferator-activated receptor gamma ligands stimulate myeloid differentiation and lipogenensis in human leukemia NB4 cells.
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Peroxisome proliferator-activated receptor gamma (PPARgamma) plays a central role in adipocyte and macrophage differentiation. Pioglitazone (Actos, AD4833), an antidiabetic drug, and 15-deoxy-Delta(12,14)-prostaglandin J2 (PGJ2) have recently been identified as synthetic and natural ligands for
Antioxidant status and biomarkers of oxidative stress in bovine leukemia virus-infected dairy cows.
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Bovine leukemia virus (BLV) is among the most widespread livestock pathogens in many countries. Despite advances in understanding the pathogenesis of this disease, little is known about the involvement of oxidative stress. Therefore, this study examined the antioxidant status and the markers of
Fatty acid utilization by L1210 murine leukemia cells.
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L1210 murine leukemia cells grow in an ascites plasma that contains lipids, including 0.62 +/- 0.046 (S.E.) MICRONEq free fatty acid per ml. in vitro incubations demonstrated that isolated L1210 cells readily utilize free fatty acid that is added to the incubation medium. When the cells were
Alterations in lipid metabolism induced by 12-O-tetradecanoylphorbol-13-acetate in differentiating human myeloid leukemia cells.
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Several aspects of lipid metabolism were evaluated in differentiating human myeloid leukemia (HL-60) cells after treatment with the tumor promoter 12-O-tetradecanoylphorbol-13-acetate. Modifications accompanying the phorbol ester-induced differentiation include an increase in the incorporation of
Alterations of lipid composition in Friend leukemia cell tumors in mice treated with tumor necrosis factor-alpha.
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Lipid analyses were carried out on transplantable murine Friend leukemia cell tumors, 6 h after intratumoral administration of tumor necrosis factor-alpha (TNF). The levels of the major phospholipid classes were uniformly decreased to about 70% of control values; free fatty acids were increased to
Uptake and activation of eicosapentaenoic acid are related to accumulation of triacylglycerol in Ramos cells dying from apoptosis.
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The present study investigates the mechanism behind induction of cell death by eicosapentaenoic acid (EPA) in leukemia cells. The PUFA-sensitive cell lines Raji and Ramos, which die by necrosis and apoptosis upon incubation with EPA respectively, had 2- to 3-fold higher uptake rate of EPA than the
Fatty acid metabolism in phorbol ester-differentiating human leukemia cells.
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Human promyelocytic leukemia cells (HL-60) undergo differentiation when treated with the tumor promoter, 12-O-tetradecanoylphorbol-13-acetate (TPA). As the primary target for TPA action is membranes, studies were undertaken to determine whether phorbol ester exposure would influence fatty acid
Directed shift of fatty acids from phospholipids to triacylglycerols in HL-60 cells induced by nanomolar concentrations of triethyl lead chloride: involvement of a pertussis toxin-sensitive pathway.
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Triethyl lead chloride (Et3PbCl) was found to induce a shift of fatty acids from membrane phospholipids to triacylglycerols in the human promyelocytic leukemia cell line HL-60. High concentrations of Et3PbCl (greater than 10 microM) caused a substantial liberation of [14C]arachidonic acid within 10
Increased cytotoxicity of polyunsaturated fatty acids on human tumoral B and T-cell lines compared with normal lymphocytes.
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Epidemiological and experimental data suggest that fatty acids may modulate the growth of tumor cells. We have analyzed the effect of different types of fatty acids, bound to serum proteins in physiological conditions, on the lipid composition and growth of human neoplastic B and T-cell lines and
Effect of dietary lipids on plasma lipoproteins and fluidity of lymphoid cell membranes in normal and leukemic mice.
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Mice of the GR/A strain were fed four different isocaloric semipurified diets, enriched in either (1) saturated fatty acids (palm oil), or (2) polyunsaturated fatty acids (corn oil), or (3) palm oil plus cholesterol, or (4) a fat-poor diet containing only a minimal amount of essential fatty acids.
The epigenetic drug 5-azacytidine interferes with cholesterol and lipid metabolism.
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DNA methylation and histone acetylation inhibitors are widely used to study the role of epigenetic marks in the regulation of gene expression. In addition, several of these molecules are being tested in clinical trials or already in use in the clinic. Antimetabolites, such as the DNA-hypomethylating
sn-1,2-diacylglycerols and phorbol diesters: uptake, metabolism, and subsequent assimilation of the diacylglycerol metabolites into complex lipids of cultured cells.
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The cell-permeable diacylglycerol mediators have been shown to mimic partially the effects of 12-O-tetradecanoylphorbol-13-acetate (TPA) on cultured cells. In order to evaluate the metabolic stability of the lipid mediators, several radiolabeled diacylglycerols were synthesized and their uptake and
Comparison of different procedures for the lipid extraction from HL-60 cells: a MALDI-TOF mass spectrometric study.
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A human leukaemia cell line--HL-60--can be differentiated into neutrophils or macrophages and both differentiation processes are accompanied by changes of the lipid composition. Various methods were described for the extraction of lipids from cellular systems, but only two of them were applied to
Esterification of an endogenously synthesized lipoxygenase product into granulocyte cellular lipids.
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The human promyelocytic leukemia cell line HL60 can be induced to differentiate into mature granulocytes by exposure to Me2SO. [1-14C]Arachidonic acid incubated overnight with these cells was incorporated mainly into membrane phospholipids. Stimulation of these cells with the calcium ionophore,
Analysis of tumor-associated alkyldiacylglycerols and other lipids during radiation-induced thymic leukemogenesis.
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Lipid composition of thymuses investigated during the development of thymic leukemogenesis induced by exposing C57BL/6J mice to gamma radiation led to the following conclusions. 1. Alkyldiacylglycerols, a class of lipids that are generally elevated in most neoplastic tissues, occurred only in small
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