Objective:To address how genistein sensitizes the chemotherapy-resistant ovarian carcinoma cells and promotes apoptosis in the respect of cell cycle and the regulation of survivin expression in the process.Methods:Ova...Objective:To address how genistein sensitizes the chemotherapy-resistant ovarian carcinoma cells and promotes apoptosis in the respect of cell cycle and the regulation of survivin expression in the process.Methods:Ovarian SKOV-3 carcinoma cell line was treated with genistein or cisplatin either alone or in combination.Cell viability was showed by MTT method.Cell cycle and apoptosis were detected by flow cytometry.Survivin mRNA and protein were revealed by RT-PCR and immunocytochemistry,respectively.Results:Genistein could reduce the cell viability in a dose-dependent manner,while cisplatin did so at a much higher level.In contrast,if the two agents were treated in combination,half growth inhibition(IC50) value for cisplatin was reduced remarkably and the effect was synergistic as analyzed by isobologram.In particular,the reduced cell viability was exhibited by a switch in cell cycle progression,as the cells were arrested in G2/M phase and the G0/G1 phase-fraction was significantly decreased.The reduced cell viability appeared to involve apoptosis,based on our results from flow cytometry and Hoechst 33258 staining.In the meanwhile,genistein performed the inhibitory effect on cisplatin-induced survivin expression.Conclusion:Genistein can sensitize ovarian carcinoma cells to cisplatin therapy with the inhibition of survivin expression as the potential mechanism.展开更多
Objective: To investigate the prevalence ofpenicillinase-producing Neisseria gonorrhoeae (PPNG) inWuxi. Methods: Nested PCR (nPCR) was used to test for thepresence of β-lactamase DNA in urethral or cervical swabsspec...Objective: To investigate the prevalence ofpenicillinase-producing Neisseria gonorrhoeae (PPNG) inWuxi. Methods: Nested PCR (nPCR) was used to test for thepresence of β-lactamase DNA in urethral or cervical swabsspecimens from 217 patients with gonorrhea. OnenPCR-positive product was randomly selected for DNAsequencing. Results: PPNG was found in 60 of all 217 specimens(27.65%), and in 33.87% (42/124) of male and 19.35%(18/93) of female cases. The nPCR product was identical toa known clinical PPNG strain. Conclusion: The prevalence of PPNG in STD patients inWuxi is alarmingly high, and this must be taken intoconsideration for successful treatment and prevention ofgonorrhea infections.展开更多
基金Supported by the Chinese National Natural Scientific Fund(30472226)
文摘Objective:To address how genistein sensitizes the chemotherapy-resistant ovarian carcinoma cells and promotes apoptosis in the respect of cell cycle and the regulation of survivin expression in the process.Methods:Ovarian SKOV-3 carcinoma cell line was treated with genistein or cisplatin either alone or in combination.Cell viability was showed by MTT method.Cell cycle and apoptosis were detected by flow cytometry.Survivin mRNA and protein were revealed by RT-PCR and immunocytochemistry,respectively.Results:Genistein could reduce the cell viability in a dose-dependent manner,while cisplatin did so at a much higher level.In contrast,if the two agents were treated in combination,half growth inhibition(IC50) value for cisplatin was reduced remarkably and the effect was synergistic as analyzed by isobologram.In particular,the reduced cell viability was exhibited by a switch in cell cycle progression,as the cells were arrested in G2/M phase and the G0/G1 phase-fraction was significantly decreased.The reduced cell viability appeared to involve apoptosis,based on our results from flow cytometry and Hoechst 33258 staining.In the meanwhile,genistein performed the inhibitory effect on cisplatin-induced survivin expression.Conclusion:Genistein can sensitize ovarian carcinoma cells to cisplatin therapy with the inhibition of survivin expression as the potential mechanism.
文摘Objective: To investigate the prevalence ofpenicillinase-producing Neisseria gonorrhoeae (PPNG) inWuxi. Methods: Nested PCR (nPCR) was used to test for thepresence of β-lactamase DNA in urethral or cervical swabsspecimens from 217 patients with gonorrhea. OnenPCR-positive product was randomly selected for DNAsequencing. Results: PPNG was found in 60 of all 217 specimens(27.65%), and in 33.87% (42/124) of male and 19.35%(18/93) of female cases. The nPCR product was identical toa known clinical PPNG strain. Conclusion: The prevalence of PPNG in STD patients inWuxi is alarmingly high, and this must be taken intoconsideration for successful treatment and prevention ofgonorrhea infections.
