Browsing by Subject "Dicarboxylic acids"

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    Observations on cell kinetics and viability of a human melanoma cell line exposed to dicarboxylic acids in tissue culture
    (Murcia : F. Hernández, 1986) Breathnach, A. S.; Robins, E.J.; Bhasin, Y. P.; Ethridge, L. B.; Nazzaro-Porro, M.; Passi, S.; Picardo, M.
    Cultures of human nlelanonla cell line BOO08 \verc e-iposed to the disodium salts of arelaic acid (C,, 2Na), adipic acid (C,, 2Na) and dodecanediaic acid (C,, 2Na) at IO'M and 5 x 10-'M for 24 hrs. None of the diacid salts had a significant effect on growth rate or viability of the cells, at 10-'M for 24 hrs nor had C, 2Na any effect at 5 x 10'M. At 5 x 102M for 24 hrs, both C,, 2Na, and CIL2 Na had a significant effect in reducing both growth and viability. These effects were accompanied by morphological evidence of cell death, and swelling of mitochondria and accuni~~latioonf lipid droplets within cytoplasm of still biable cells.
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    Scanning electron microscopy of human and murine melanoma cells exposed to medium chain-length, C6mC,2d i carboxylic acids in tissue culture
    (Murcia : F. Hernández, 1987) Breathnach, A. S.; Robins, E. J.; Bhasin, Y. P.; Ethridge, L. B.; Nazzaro-Porro, M.; Passi, S.; Picardo, M.
    Human and murine (Harding-Passey and Cloudman) melanoma cells were exposed to various concentrations (1 X 10-3M-l X 10-lM) of adipic (C,), azelaic (C,), and dodecanedioic (C,,) acids for 1-6 hours in tissue culture, and the effects on shape and surface topography were examined by scanning electron microscopy. Effects, i.e., rounding up, concentration of microvilli, blebbing, and prominence of retraction fibrils were time and dose dependent, and for the same concentrations and exposure times, C,, had a greater effect than C,, and both a significantly greater effect than C,. These differential reactions to the three diacids parallel previously reported effects on cell kinetics and viability. The changes could be due to a prime effect on the cell membrane, or they might reflect phases of the cell cycle directed by action of the diacids on the nucleus; this latter seems unlikely. An effect on the cytoskeleton is possibly involved.