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- W2106322351 abstract "Areca nut is the most widely used psychoactive substance and an important environmental risk factor for development of oral premalignant lesions and cancer. Arecoline, the major alkaloid of areca nut, has been known to cause cytotoxicity and genotoxicity in mammalian cells in vivo and in vitro and even contributes to carcinogenicity. However, the susceptible genes accounting for arecoline-induced damage in normal human oral cells are still lacking, which possibly involves in initial molecular damage via alternation of gene expression level on biological pathways. The present study was undertaken to characterize the toxic effects of arecoline in gene expression profiling on normal human gingival fibroblasts (HGF) using cDNA microarray and quantitative real-time reverse transcription PCR. The cytotoxicity of arecoline on HGF-1 cell line was elevated in a dose-dependent manner (p < 0.05) accompanied with distinct morphological change and formation of intracellular vacuoles were observed. At optimum concentration of arecoline determined from dose-response curve of the cytotoxicity, a large number of genes were significantly repressed than induced by arecoline in global gene expression profiling. Five induced- and seven repressed genes including glutathione synthetase were further validated, and their gene expression changes were increased in a dose-dependent manner in a concentration range of 50–150 μg/ml. In conclusion, we proposed a tentative model to explain arecoline-induced effects on contribution of oral pathogenesis. The findings identified that 12 susceptible genes can potentially serve as biomarkers of arecoline-induced damage in betel chewers." @default.
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- W2106322351 date "2007-08-06" @default.
- W2106322351 modified "2023-10-17" @default.
- W2106322351 title "Characterization of Arecoline-Induced Effects on Cytotoxicity in Normal Human Gingival Fibroblasts by Global Gene Expression Profiling" @default.
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- W2106322351 doi "https://doi.org/10.1093/toxsci/kfm201" @default.
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