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- W1508201234 abstract "AIM: To investigate the apoptosis of implanted primary gastric cancer cells in nude mice induced by resveratrol and the relation between this apoptosis and expression of bcl-2and bax.METHODS: A transplanted tumor model was established by injecting human primary gastric cancer cells into subcutaneous tissue of nude mice. Resveratrol (500 mg/kg, 1000 mg/kg and 1500 mg/kg) was directly injected beside tumor body 6 times at an interval of 2 d. Then changes of tumor volume were measured continuously and tumor inhibition rate of each group was calculated. We observed the morphologic alterations by electron microscope, measured the apoptotic rate by TUNEL staining method, detected the expression of apoptosis-regulated genes bcl-2and bax by immunohistochemical staining and PT-PCR.RESULTS: Resveratrol could significantly inhibit carcinoma growth when it was injected near the carcinoma. An inhibitory effect was observed in all therapeutic groups and the inhibition rate of resveratrol at the dose of 500 mg/kg,1 000 mg/kg and 1 500 mg/kg was 10.58%, 29.68% and 39.14%, respectively. Resveratrol induced implanted tumor cells to undergo apoptosis with apoptotic characteristics,including morphological changes of chromatin condensation,chromatin crescent formation, nucleus fragmentation. The inhibition rate of 0.2 mL of normal saline solution, 1 500 mg/kg DMSO, 500 mg/kg resveratrol, 1 000 mg/kg resveratrol, and 1 500 mg/kg resveratrol was L3.68±0.37%, 13.8±0.43%,48.7±1.07%, 56.44±1.39% and 67±0.96%, respectively. The positive rate of bcl-2 protein of each group was 29.48±0.51%,27.56±1.40%, 11.86±0.97%, 5.7±0.84% and 3.92±0.85%,respectively by immunohistochemical staining. The positive rate of bax protein of each group was 19.34±0.35%,20.88±0.91%, 40.02±1.20%, 45.72±0.88% and 52.3±1.54%,respectively by immunohistochemical staining. The density of bcl-2 mRNA in 0.2 mL normal saline solution, 1 500 mg/kg DMSO, 500 mg/kg resveratrol, 1 000 mg/kg resveratrol,and 1 500 mg/kg resveratrol decreased progressively and the d" @default.
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- W1508201234 date "2005-01-01" @default.
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- W1508201234 title "Anticancer activity of resveratrol on implanted human primary gastric carcinoma cells in nude mice" @default.
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