Objective To investigate the effects of mifepristone on the ultrastructure of Hofbauer cells in human early pregnant placenta. Methods Twenty 6-9 week pregnant women with indications of pregnancy termination were recruited and randomlied to mifepristone (n=10) and D & C group (n=10).Villi were collected and studied with transmission electron microscope. Results In comparison with the control group,the ultrastructure of Hofbauer cells of mifepristone group showed the following changes: the cells were markedly edematous. The number of cytoplasmic processes of Hofbauer cells deceased obviously. In the cytoplasm of Hofbauer cells,the size of vacuoles enlarged and of mitochondrias minimized.Rough endoplasmic reticulum and Golgi complex were under-developed.Lysosomes were rare.The nuclei enlarged and showed irregular shape. Conclusions Mifepristone may change the phagocytosis'water and electrolyte transportation and immunological function of Hofbauer cells by influencing the ultrastructure of the Hofbauer cells.Therefore it can influence the development of pregnancy.

Objective To evaluate the clinical efficacy of green light photoselective vaporization(PVP)combined testicular resection plus anti-androgen treatment on advanced prostate cancer and bladder outlet obstruction.Methods Twenty cases with PVP of advanced prostate cancer and bladder outlet obstruction were selected as our subjects,who underwent PVP testicular resection plus anti-androgen treatment.The clinical information was recorded.Results All patients were succeed through surgery.Maximum urinary flow rate (MFR) at the pre-operation was (2.0 ± 1.0) ml/s,and increased to (14.0 ± 4.5) ml/s after operation.Serum prostate specific antigen (PSA) was decreased from the preoperative (176.5 ± 160.5) μg/L to (2.0 ± 1.0)μg/L International prostate symptom score (IPSS) was from (25.0 ± 5.0) down to (8.0 ± 1.0) points.The quality of life (QOL) score was (4.0 ± 2.0) at pre-operation,higher than after operation (1.0 ± 1.0)points.There were significant differences between preoperative and postoperative (t =9.502,7.371,5.328,8.350,P ＜0.05).Every patient was followed up from 3 to 18 months.The improvements regarding of clinical symptoms were seen including voiding,and all patients survived with tumor.Conclusion Advanced prostate cancer associate with bladder outlet obstruction.The therapy plan of PVP joint testicular resection plus antiandrogen is proved to improve symptoms of urethral obstruction and patient quality of life.

Objective To explore the role of multi-media teaching in the ENT physician training. Methods 32 further-study professionals were randomly divided into 2 groups. The control group received traditional teaching methods(n = 16), and the experimental group received the multi-media teaching method (n = 16). After the training, all trainees would take the theory test and skill assessment Results The basic theory and clinical skill scores of the experimental group are better than the control group at the end of the training. Conclusion Multi-media teaching method is very suitable for ENT refresher training.

Objective To investigate the effect of propofol on the expression of c-fos protein and c-fos mRNA in hippocampus during global cerebral ischemia-reperfusion in rats. Methods Forty male Wistar rats weighing 250-320 g were randomly allocated to one of five groups: group A received sham operation ( n = 8); group B received ischemia-reperfusion (I-R n = 8); group C received intraperitoneal propofol 50 mg?kg-1(C1 n = 8) or 100 mg@kg-1(C2 n = 8) or 150 mg2kg-1(C3 n = 8) 10 min before I-R. The animals were anesthetized with intraperitoneal pentobarbital 40 mg?kg-1.Vertebral arteries were surgically exposed and permanently occluded by coagulation. Bilateral common carotid arteries were exposed. 4-0 silk suture was placed around the arteries. Global cerebral ischemia was induced by lighting the suture for 10 min which was then loosened for reperfusion. At the end of 60 min reperfusion the animals were decapitated on ice and brain was immediately removed. Different brain tissues were either kept in liquid nitrogen ( - 80℃) or fixed in 10% formalin. The changes in c-fos protein in brain was evaluated by immuno-histochemical methods and c-fos mRNA expression in hippocampus was detected using semiquantitative RT-PCR technique.Results The c-fos expression was minimal in sham operation group. I-R induced significant increase in the expression of c-fos protein and c-fos mRNA and propofol significantly inhibited the increase in c-fos expression induced by I-R. The levels of c-fos expression were higher in group C1 than that in group C2 (P 0.05) . Conclusion The study shows that propofol can significantly inhibit expression of c-fos protein and c-fos mRNA induced by global cerebral I-R.

Objective To study the metabolism of amino acids in AIDS patients for the purpose of providing appropriate nutritional support.Method High performance liquid chromatography combined with pre-column derivatization technology was used to detect free amino acids in plasma from 22 untreated AIDS patients,16 HAART treated AIDS patients and 30 healthy controls.Statistic analysis was performed through SPSS software.Results The concentration of alanine(Ala) was significantly increased and the concentration of phenoalanine(Phe) was remarkably decreased in AIDS patients as compared with the healthy controls(P

Objective To investigate the clinical effects of Shenlong decoction(main ingredients consisted of ginsent root,radix polygonimultiflori,Pheretima,Ligusticum wallichii,Fructas Alpiniae oryphyllee etc.)on the treatment of cerebral vascular dementia (VD)in the elderly patients.Methods VD in all the patients(age:72.1?5.3 years old)was diagnosed according to the APA criteria, and the cerebrovascular diseases were confirmed by CT or MRI.68 patients were divided into 2 groups randomly.The experimental group consisting of 36 patients was given Chinese traditional medicine,Shenlong decoction,orally 500ml q.i.d.for 3 months,and the other 32 patients were given acetamide pyrrolidone(piracetam)orally 1.6g,tid for 3 months as a control group.The MMSE(Mini Mental State Examination)and BBS(Bless Behaviour Schedule)were used to evaluate the cognitive function and the daily activity in those patients be- fore and after treatment.Results After treatment,the scores of cognition and daily activity were improved in all the patients with VD. The effective rate in the Shenlong group was 52.8%,and 53.13% in the piracetam group.There was no significant difference in the im- provement of the short time memory and orientation ability between the two groups.However,compared with the control group,the score of daily activity was significantly improved in the Shenlong decoction group only(P

Objective To compare the clinical efficacy of gemcitabine arterial infusion chemotherapy with intravenous chemotherapy in the management of patients with advanced pancreatic cancer and to evaluate the efficacy and safety of gemcitabine arterial infusion chemotherapy. Methods 43 patients with advanced pancreatic cancer were included in this study, of whom 21 patients received arterial infusion chemotherapy (Group A) and the other 22 were treated by intravenous chemotherapy (Group B), gemcitabine combined with 5-FU chemotherapy was administrated in both groups. The main outcomes were clinical benefit response (CBR), tumor response rate and toxicity. Results Compared with Group B, there was a significant improvement of CBR in group A (81% vs 50%, P =0.033) ; there was also significant improvement of pain control in group A (76.2% vs 45.5%, P =0.039). There was no significant difference in the tumor response rate between two groups (33.3% vs 22.7%, P =0.498). No significant increase of side effects was observed in both groups. Conclusions In the management of advanced pancreatic cancer, the arterial infusion method may be more favorable than intravenous approach in improving clinical benefits with mild toxicity and well tolerability.

The incidence of venous thromboembolism after spinal cord injury is high, and its diagnosis and prevention received much attention in clinical research in recent years. Because of the special characteristics, the prevention of venous thrombosis should be combined with basic prevention, physical prevention and drug prevention. According to the different situations of venous thromboembolism in patients with spinal cord injury, the prevention methods need to adjust to carry out multidisciplinary comprehensive treatment.

Objective To observe the changes of hippocampal NogoA-NgR1 signaling on postoperative cognitive function (POCD) in aged mice, and explore the potential underling mechanism.Methods Isoflurane anesthesia and laparotomy were applied to establish the POCD model.Forty aged male C57BL/6 mice were randomly divided into the following four groups (n=10): group O2+saline (group OS), group O2+NEP1-40 (group ON), group isoflurane anesthesia+laparotomy surgery+saline (group SS), and group isoflurane anesthesia+laparotomy surgery+NEP1-40 (group SN).Cannula placement was performed into lateral ventricle 7 days before the surgery.Animals were subjected to an administration of NEP1-40 (20 μg/2 μl) or isochoric saline via intracerebroventricular injection once daily for 8 consecutive days, injection was given from 2 h before isoflurane anesthesia to the last behavioral test.Open field test was performed at 5th d after operation.Contextual and cued fear conditioning training and testing were exhibited at 6th and 7th d after operation, respectively.The hippocampus was harvested 2 h after the behavioral test.Western blot was used to detect the expressions of NogoA, NgR1, RhoA, ROCK2 and GAP43.Golgi staining was applied to measure the changes of dendritic spines in hippocampal CA1 area.Results Compared with the groups OS and ON, the freezing time in the contextual fear conditioning test was significantly decreased, the contents of NogoA, NgR1, RhoA and ROCK2 were significantly increased, the content of GAP43 and the number of dendritic spine were significantly decreased in group SS (P<0.05).Compared with the group SS, the freezing time in the contextual fear conditioning test was significantly increased, the contents of RhoA and ROCK2 were significantly decreased, the content of GAP43 and the number of dendritic spine were significantly increased in group SN (P<0.05).Conclusion Over-activated of hippocampal NogoA-NgR1 signaling participated in the pathogenesis of POCD in aged mice.

Objective To investigate the application of computer radiography system in combination with high kV radiography technique to diagnose cardiac disease.Methods 30 patients with cardiac disease were taken chest photographs,which chest photographs by CR system and high kV radiography technique were compared with these by common high kV radiography.Results The good rate of air tube occupied is 98% in therapy group,but the rate is only 70% in common group.The discrepant comparison is significant differences.Conclusion It is more significant that CR system in combination with high kV radiography technique than common photograph to diagnose cardiac disease.