10 резултати
When SK-N-BE(2) human neuroblastoma cells were exposed for 1h to growth medium supplemented with [14C]arachidonic acid (AA) at final concentrations ranging from 1 microM to 100 microM, an amount of this fatty acid was uptaken ranging form a 2% to a 120% of that present in cells at steady state. As
Neuroblastoma cells rapidly incorporate exogenous fatty acids into cellular triacylglycerol and relationships between triacylglycerol and phospholipid biosynthesis have been indicated by the relative time course of labeling of these lipids. To evaluate this further, neuroblastoma cells were labeled
The metabolism (chain elongation, desaturation, and incorporation into complex lipids) of thirteen different radiolabeled fatty acids and acetate was examined in N1E-115 neuroblastoma and C-6 glioma cell lines in culture. During 6-hr incubations, all fatty acids were extensively (14-80%) esterified
Phospholipid metabolism was studied in N1E-115 neuroblastoma and C6 glioma cells exposed to thapsigargin, a selective inhibitor of endoplasmic reticulum Ca(2+)-ATPase that raises the cytosolic free Ca2+ concentration [Ca2+]i. Thapsigargin caused only a transient increase of [Ca2+]i (< 1 min) in
Indiscriminate overuse or occupational exposure to agricultural chemicals can lead to neurotoxicity. Many pesticides act to impair mitochondrial function which can lead to exacerbation of neurodegeneration. Triazole fungicides are applied to grain, fruit, and vegetable crops to combat mold and fungi
The incorporation and redistribution of [1-14C]arachidonic acid in SK-N-BE human neuroblastoma cell phospholipids were investigated. By continuous labelling in serum-enriched medium, a rapid radioactivity incorporation into phosphatidylcholine (PtdCho), phosphatidylinositol, and phosphatidylserine
Neuroblastoma (N1E-115) cells in culture rapidly incorporated exogenous fatty acyl chains suspended as albumin complexes in the medium. The essential fatty acids, linoleic (18:2(n - 6)) and linolenic (18:3(n - 3)) acids, were converted to polyunsaturated acids by delta 6 and delta 5 desaturation and
The incorporation and mobilization of [3H]arachidonic acid in lipids of human neuroblastoma cell lines, SK-N-SHF and LA-N-5, was studied. Essentially similar results were obtained with these two cell lines. Except for phosphatidylinositol which displayed the highest specific activity, the
In cultured neuroblastoma cells (N1E-115), the metabolism of the essential fatty acid, linoleic acid (18:2 (n-6)), to arachidonic acid (20:4(n-6)) can be altered by other fatty acids in a manner supporting a concerted action of the modulating fatty acid on the desaturation and chain elongation
A purified plasma membrane fraction was isolated from cultured neuroblastoma (N1E-115) cells on a discontinuous gradient of 5, 25 and 35% Percoll within 1 h of cell disruption by nitrogen cavitation. Yield of plasma membrane, banding in the 25% Percoll (d = 1.051), was high as judged by the