Objective: To determine the effect of ascorbic acid (AA) on DNA synthesis, intracellular accumulation of ADM and ADM resistance of tumor cell lines. Methods: K562, K562/ADM and KB cell lines were used to study the e...Objective: To determine the effect of ascorbic acid (AA) on DNA synthesis, intracellular accumulation of ADM and ADM resistance of tumor cell lines. Methods: K562, K562/ADM and KB cell lines were used to study the effect of ascorbic acid on DNA synthesis, intracellular accumulation of ADM and ADM resistance by fluid scintillometry, MTT method, spectrofluorophotometry and immunocytochemistry. Results: Results showed that AA was capable of inhibiting DNA synthesis of K562 and K562/ADM in a dosedependence fashion, but not KB cell line, and significantly reducing ADM sensitivity in K562 and KB cell lines, as well as potentiating obviously ADM resistance in K562/ADM cell line. Conclusion: These effects of AA may be closely correlated with significant elevation of intracellular accumulation of ADM in KB cell line, and significant reduction of that in K562 and K562/ADM cell lines but possibly not correlated with the expression of Pglycoprotein.展开更多
Objective: To observe the effect of electroacupuncture (EA) on tumor necrosis factor-α (TNF-α) and vascular endothelial growth factor (VEGF) in peripheral blood and joint fluid of collagen-induced arthritis ...Objective: To observe the effect of electroacupuncture (EA) on tumor necrosis factor-α (TNF-α) and vascular endothelial growth factor (VEGF) in peripheral blood and joint fluid of collagen-induced arthritis (CIA) rats. Methods: After CIA rat models were successfully established, the rats were given corresponding intervention treatments. The levels of TNF-α and VEGF in peripheral blood and joint fluid were measured. Results: The levels of TNF-α and VEGF levels in peripheral blood and joint fluid of CIA rats were higher than those of normal group (P〈0.05); EA treatment significantly decreased the index levels, of significant difference compared with those before treatment (P〈0.05), as well as the model group (P〈0.05). Conclusion: EA can significantly decrease the TNF-α and VEGF levels in peripheral blood and joint fluid of CIA rats, and helps restrain further development of the disease.展开更多
文摘Objective: To determine the effect of ascorbic acid (AA) on DNA synthesis, intracellular accumulation of ADM and ADM resistance of tumor cell lines. Methods: K562, K562/ADM and KB cell lines were used to study the effect of ascorbic acid on DNA synthesis, intracellular accumulation of ADM and ADM resistance by fluid scintillometry, MTT method, spectrofluorophotometry and immunocytochemistry. Results: Results showed that AA was capable of inhibiting DNA synthesis of K562 and K562/ADM in a dosedependence fashion, but not KB cell line, and significantly reducing ADM sensitivity in K562 and KB cell lines, as well as potentiating obviously ADM resistance in K562/ADM cell line. Conclusion: These effects of AA may be closely correlated with significant elevation of intracellular accumulation of ADM in KB cell line, and significant reduction of that in K562 and K562/ADM cell lines but possibly not correlated with the expression of Pglycoprotein.
基金supported by Seientific and Technologieal Development Plan Project of Suzhou (SS0528)
文摘Objective: To observe the effect of electroacupuncture (EA) on tumor necrosis factor-α (TNF-α) and vascular endothelial growth factor (VEGF) in peripheral blood and joint fluid of collagen-induced arthritis (CIA) rats. Methods: After CIA rat models were successfully established, the rats were given corresponding intervention treatments. The levels of TNF-α and VEGF in peripheral blood and joint fluid were measured. Results: The levels of TNF-α and VEGF levels in peripheral blood and joint fluid of CIA rats were higher than those of normal group (P〈0.05); EA treatment significantly decreased the index levels, of significant difference compared with those before treatment (P〈0.05), as well as the model group (P〈0.05). Conclusion: EA can significantly decrease the TNF-α and VEGF levels in peripheral blood and joint fluid of CIA rats, and helps restrain further development of the disease.