Résumé
<p><b>OBJECTIVE</b>To study the effect of short double-stranded RNA (dsRNA) on F10 gene expression in KLE cells and the effect of F10 knock-down on KLE cell apoptosis.</p><p><b>METHODS</b>The short dsRNA specifically targeting F10 gene prepared by in vitro transcription was transfected into KLE cells via lipofectamine 2000. The expression of F10 mRNA in the transfected KLE cells was detected by real-time quantitative RT-PCR, and the apoptosis of the cells was assayed by flow cytometry.</p><p><b>RESULTS</b>Real-time quantitative RT-PCR demonstrated that transfection of the KLE cells with the short dsRNA induced effective knock-down of F10 gene, and transfection of the cells with 20 nmol/L dsRNA for 48 h decreased the expression of F10 mRNA by 83%. Compared with the control, the apoptosis index of the transfected KLE cells increased from 0.36% to 8.91%.</p><p><b>CONCLUSION</b>F10 gene in KLE cells can be specifically knocked-down with dsRNA prepared by in vitro transcription, and the down-regulation of F10 gene induces apoptosis of KLE cells.</p>
Sujets)
Femelle , Humains , Adénocarcinome , Génétique , Anatomopathologie , Apoptose , Génétique , Lignée cellulaire tumorale , Tumeurs de l'endomètre , Génétique , Anatomopathologie , Techniques de knock-down de gènes , Gènes tumoraux , Génétique , Interférence par ARN , ARN messager , Génétique , Métabolisme , Petit ARN interférent , Génétique , RT-PCR , TransfectionRésumé
<p><b>OBJECTIVE</b>To evaluate the efficacy of ovulation stimulation protocol with gradual increment of gonadotropin in women with high ovarian response.</p><p><b>METHODS</b>A retrospective study was conducted between june 2005 and April 2006 in 70 women undergoing controlled ovarian hyperstimulation. The clinical outcomes of the women using gradual increment protocol were compared with those of women receiving other ovulation-stimulating protocols.</p><p><b>RESULTS</b>The mean number of large follicles (>or=14 mm) and retrieved oocytes on the day of retrival was significantly lower, but the duration of stimulation was significantly longer in the gradual increment group than in the control group. The rate of follicular puncture was also higher in the former group. The clinical pregnancy rate, total gonadotropin dosage, cancellation rate and incidence of ovarian hyperstimulation syndrome were similar for the two groups.</p><p><b>CONCLUSION</b>Ovulation stimulation protocol with gradually increased gonadotropin may provide a promising alternative for controlled ovarian hyperstimulation in women with a strong ovarian response.</p>