ABSTRACT
ObjectiveTo study the effects of tanshinoneⅡA on proliferation of cervical squamous cancer Siha cells; To discuss its possible molecular mechanism.Methods Cervical squamous cancer Siha cells were treated with different doses of tanshinoneⅡA. The effects of tanshinoneⅡA on proliferation of Siha cells were measured by MTT assay and flow cytometry analysis. The effects of tanshinoneⅡA on expression levels of phospho-extracellular regulate kinase (p-ERK) and Cyclin D in Siha cells were measured by Western blot.Results 1×10-5, 5×10-6, 1×10-6, 5×10-7 mol/L tanshinoneⅡA significantly inhibited Siha cell proliferation and such effect could be enhanced by ERα antagonist MPP and attenuated by ERβ antagonist PHTPP. 1×10-5, 5×10-6, 1×10-6 tanshinoneⅡA could significantly decrease the proliferation index of Siha cells. 1×10-5, 5×10-6, 1×10-6, 5×10-7 mol/L tanshinoneⅡA could significantly reduce the protein expression levels of p-ERK and Cyclin D of Siha cells.ConclusionTanshinoneⅡA can inhibit cervical squamous cancer Siha cell proliferation and such effect is realized via estrogen receptor pathway. TanshinoneⅡA plays anti-proliferation roles by reducing the expression levels of p-ERK and Cyclin D.
ABSTRACT
Aim To explore the effects of tanshinone IIA on cell proliferation via G protein-coupled estrogen receptor inductive and regulative pathway in typical es-trogen receptor and G protein-coupled estrogen receptor positive T47D breast cancer cells. Methods The pro-liferation rate of T47 D cells influenced by tanshinone IIA was analyzed by MTT assay. G protein-coupled es-trogen receptor agonist G1 and GPER antagonist G15 were employed as tools. GPER SiRNA was applied to build GPER gene silence T47D cells. GPER expres-sion influenced by tanshinone IIA was measured by Western blot. Results The proliferation rates of T47D cells treated with 1 × 10 -5 mol·L-1 - 1 × 10 -7 mol· L-1 of tanshinone IIA were decreased significantly. Such effects could be attenuated by G1 or enhanced by G15 . Growth of GPER SiRNA transfected T47 D cells were significantly inhibited by 1 × 10 -5 mol·L-1 - 1 × 10 -7 mol·L-1 of tanshinone IIA treating. Result of Western blot showed that tanshinone IIA at 1 × 10 -5 mol· L-1 and 1 × 10 -6 mol · L-1 could induce de-crease of GPER protein expression in T47D cells. Conclusions Tanshinone IIA shows inhibitory effects on proliferation rate of T47 D breast cancer cells via GPER pathway. Tanshinone IIA could perform regula-tive function on GPER expression level in target cells.
ABSTRACT
Objective To analyze the changes of bacteria stains in acute obstructive cholangitis with suppuration (AOSC) and sensitivity of different bactera strains to antibiotics in recent decade.Methods The data of bacterial susceptibility of AOSC patients and sensitivity of different bacteria strains to antibiotics in our hospital collected from 1999 to 2001 (group A,n =54) and from 2009 to 2011 (group B,n =62) were analyzed.Resules In group A,there were 29 male and 24 female with age range of 35 ～ 82 and mean age of 57.5 years,and in group B,there were 23 male and 39 female with age range of 39 ～ 87 and mean age of 68.2 years.There were no differences in bacteria strains infected between two groups.However,there was a trend of increase in the proportion of the Pseudomonas aeruginosa and Staphylococcus aureus infection,and a trend of decrease in the proportion of Escherichia coli infection.The degrees of sensitivity of Escherichia coli to ciprofloxacin,ceftazidime,cefaclor and ceftriaxone were statistically different from those observed ten years ago ; and the degrees of sensitivity of Pseudomonas aeruginosa to ceftazidime and cefaclor were statistically different from those detected ten years ago as well.In recent years,the sensitivity of bacteria to antibiotics was on a downwards trend.Conclusions The pathogens of acute obstructive and suppurative cholangitis did not obviously change in recernt decade,but the sensitivity of bacteria to antibiotics was lowered.