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To investigate polyacetylene compounds isolated from petroleum ether extract of ´ panax ginseng effect on the macromolecule synthesis, lympoid lukemia L1210 cell was incubated with them at 4, 8, 12,16 hours. Panaxydol, panaxynol and panaxytriol as cytotoxic substances inhibited the synthesis of macromolecule such as DNA, RNA and protein. Panaxydol which had the most potent cytotoxicity among these three compounds showed the strongest inhibitory effect on DNA, RNA and protein synthesis. For DNA and RNA synthesis, panaxynol and panaxytriol decreased the rate of inhibition with the incubation time but panaxydol had a strongest inhibitory effect at 16 hour incubation time. Protein synthesis was markedly inhibited by all these polyacetylene compounds. It was obserbed that there is a relationship between cytotoxicities of polyacetylene compounds and the inhibition of macromolecule synthesis.
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