Objective:To study the effects of dexamethasone (Dex), a synthetic glucocorticoid, on the proliferation and cell cycle of human breast carcinoma cell line MCF-7. Methods: MCF-7 cells were treated with different concentrations of Dex (10~(-10)-10~(-6) mol/L). Cell proliferation was evaluated by viable cell count and alkaline phosphatase( AKP) activity was also determined. The cell cycle was examined with flow cytometry and p21/WAF1 expression was detected with Western blot analysis. Results: Dex inhibited the proliferation of MCF-7 cells, with the cell number being 70% of the control group 5 d after treatment with Dex(10~(-7) mol/L). Dex also induced G_0/G_1 arrest of MCF-7 cells phase. AKP activity increased significantly after treatment with Dex in a time- and dose-dependent manner. Dex had no obvious effect on p21/WAF1 expression. (Conclusion:) Glucocortocoids can obviously inhibit the proliferation of MCF-7 cells and induce G_0/G_1 phase arrest.

Teaching method is important to carry through the content of the course and guarantee the teaching quality.We have proceeded some reforms and research in the Obstetrics and Gynecology teaching and have obtained the good result by intergroting teaching conteut and teaching resoures,selecting high-level teaching team,case teaching,PBL teaching and multi-media teaching.

Objective: To study the diagnosis， treatm ent and outcome of infants in patients with hyperthyroidism in pregnancy. Methods: The levels of T3，T4，TSH，FT3，FT4 in 40 cases of hyperthyroid gravida and control group were measured before delivery, the r oute of delivery and the outcome of infants were studied, and the neonatal thyroid f unctions were evaluated by the levels of T3，T4，TSH in cord serum samples . Results: The levels of T3，T4，FT3，FT4 in non-treatm ent group were higher than that of treatment group and control(P<0.01); an i ncreased rate of forceps and cesarean in hyperthyroid gravida was seen compared with that in control group, about 90%(36/40); the body weights of infants in no n-treatment group were lower than that in treatment and control group. There wa s a case of neonatal hyperthyroidism in non-treatment group. Conclusion : Hyperthyroidism should be diagnosed and treated earlier and there is little side effects on the outcome of infants.

Objective To evaluate the value of combined use of laparoscopy and hysteroscopy in the diagnosis of infertility. Methods Clinical data of 168 cases of infertility receiving examinations with laparoscopy and hysteroscopy from June 1999 to October 2003 were retrospectively reviewed.Results Hysteroscopic examinations found intrauterine diseases in 79 cases(79/168,47.0%),including 46 cases of endometrial hyperplasia or polyps(46/79,58.2%).Laparoscopic examinations showed organic pelvic diseases in 99 cases,including 85 cases of chronic pelvic inflammation,endometriosis or polycystic ovarian syndrome(85/99,85.9%).Both laparoscopy and hysteroscopy gave normal findings in 15 cases and abnormal findings in 39 cases.Unilateral or bilateral tubal obstruction was found in 90 cases by tubal patency tests under hysteroscope(90/168,53.6%) and in 78 cases by laparoscopy(78/168,46.4%). Conclusions Combined use of laparoscopy and hysteroscopy offers accurate diagnostic evidences in examinations of infertility.

Objective The purpose of this study was to explore the teaching method PBL in gynecology and obstetric education. Methods We took PBL in teaching Acute Gynecological Abdomen Pain in 102 students between 2008 and 2009. Results Questionnaire results and high scores in tests suggested that the students showed great subjective initiative in studies.PBL can cultivate students'self-learning capability,improve their ability of analyzing and solving prob-lems. Conclusion PBL is a better way in clinical medical education and worthwhile to be further researched and carried out.

In order to investigate the possibility that oxytocin (OT) is involved in stress reaction, the effect of OT or antioxytocin serum (AOTS) on rat swimming maintaining time was observed. On intraventrncularly administrating 0.625, 1.25, 2.5 and 5.0ng OT 5min before swimming,the swimming maintaining time was 29.32?5.84%, 44.92?4.54%. 60.18?4.21% and 80.48?3.62% shorter than that before injection,respectively.All the swimming maintaining time of the experimental groups was shorter significantly than that of the control group which was intraventricularly injected saline (p

Objective To explore the relationship between quality of life and acceptance of disability of colostomy patients.Methods Using convenience sampling method to investigate 111 colostomy patients.General information questionnaire,QLQ-C30 scale,QLQ-CR38 scale and Acceptance of Disability Scale were used to investigate patients' general condition,quality of life and acceptance of disability.Data was analyzed by SPSS 17.0.Results The general health condition of colostomy patients was better than reference value and the score of ADS was at an average level.There was a relationship between general health condition,functioning dimensions,symptom dimensions and acceptance of disability.Conclusions There was a close relationship between quality of life and acceptance of disability.The acceptance of disability should be improved to help patients to obtain better quality of life.

AIM:To evaluate the antitumor effect of caffeic acid Ge on U14 tumor bearing mice.METHODS:The tumor inhibitory ratios of caffeic acid Ge on the growth of U14 in mice was observed.Apoptosis morphological transformation of U14 cells induced by caffeic acid Ge was detected by electronic scan microscope and MG-P staining.Alteration of cell cycle was analyzed by flow cytometry.Apoptosis-related protein levels of Bax and Bcl-2 were determined by immunity histochemistry technology.MTT assay was applied to study the antitumor activities of caffeic acid Ge in U14 cell lines in vitro.RESULTS:Tumor inhibitory rates in caffeic-acid Ge groups were 38.50%,47.17% and 64.02%(from low dose to high dose)(P

OBJECTIVETo observe the effects of Dexamethasone (Dex), a synthetic glucocorticoid, on glucocorticoid receptor expression in the human ovarian carcinoma cell line 3AO. The molecular mechanism of glucocorticoid (GC) on 3AO cells was also studied.

METHODSThe expression and regulation of the glucocorticoid receptor in 3AO cells was studied by utilizing radioligand binding assay and quantitative RT-PCR.

RESULTSHigh affinity and low capacity GR existed in 3AO cells, in addition, GR binding activity was down-regulated by Dex in a time-dependent manner, to a level about 28.34% of control following 24 hours treatment, with a concomitant decrease in GR mRNA. The induction of alkaline phosphatase (AKP) activity by Dex was reversed by RU486, a potent glucocorticoid antagonist.

CONCLUSIONIn 3AO cells, functional GR which can be down-regulated by Dex at the protein and mRNA level, exists suggesting that the regulating effects of Dex on GR occur at least partially at the GR mRNA level, and that the cellular effects of Dex on 3AO cells might be mediated by GR.

Dexamethasone ; pharmacology ; Dose-Response Relationship, Drug ; Female ; Humans ; Mifepristone ; pharmacology ; Ovarian Neoplasms ; chemistry ; drug therapy ; RNA, Messenger ; analysis ; Receptors, Glucocorticoid ; analysis ; drug effects ; genetics ; Tumor Cells, Cultured

Objective To investigate the immunization effect of influenza A/H1N1 vaccine in health care workers (HCW) in Inner Mongolia Greater Khingan Mountains area. Methods Five hundred and five HCW who received A/H1N1 influenza vaccination (immunized group) and 129 staffs who didn't receive the vaccination (unimmunized group) were randomly sampled for semiquantitative testing of serum H1N1 antibody (IgG) levels by enzyme-linked immunosorbent assay (ELISA).Results were analyzed and stratified by age, sex, occupation and the time interval between the time of vaccination and serum sample collection. The antibody positive rates of the two groups were compared by x2test. Results There were 401 (79. 4%) HCW whose H1N1 antibody were positive and 50 (9.9%) whose antibody were weak positive among 505 immunized HCW. While among 129 unimmunized HCW, there were 59 (45.7%) whose antibody were positive and 15 (11.6%) whose antibody were weak positive. The seroconversion rates of specific antibody were not significantly different among the different age groups after receiving A/H1N1 influenza vaccine (P＞ 0.05).However, there were statistical differences of the seroconversion rates among different sex groups (men 95.7% vs women 87.4% in immunized group, x2=6.40, P＜0.05; and men 73.3% vs women 52.5% in unimmunized group, x2 =4.07, P＜0.05) and different occupation groups (doctor 86.0% vs nurse 94.5% in immunized group, x2 = 9. 16, P＜0.01; and doctor 43. 8% vs nurse 75.0% in unimmunized group, x2=12.61, P＜0.01 ). The seroconversion rate was 81.5% after 80 to 89 days of vaccination, which was significantly lower than those after 30 to 39, 50 to 59 days and 60 to 69 days of vaccination, which was 100.0%, 94.7% and 93.6%, respectively (x2 =3.96, P ＜0.05; x2=7.15, P ＜0. 01; x2 = 9. 98, P＜0. 01). Conclusions A/H1N1 influenza vaccination can induce effective immune response in HCW in Greater Khingan Mountains area of Inner Mongolia. However,the level of specific antibody significantly reduces after 80 to 89 days of vaccination.