Objective To compare the efficacy of domestic low-dose versus conventional-dose clopidogrel for patients with unstable angina pectoris (UAP). Methods A total of 206 UAP patients were randomly assigned to low-dose clopidogrel (50 mg/day) as treatment group and conventional-dose clopidogrel (75 mg/day) as control group. Treatment continued for 12 months to observe the extent of alleviating angina and major adverse cardiac events (MACE). Results The numbers of markedly effective, effective, ineffective and worse patients were 56(52.8%), 22 (20.8%), 11(10.4%) and 17(16.0%) in treatment group, and those were 52(51.0%), 20 (19.6%), 12(11.8%) and 18(17.7%) in control group (all P>0. 05). There was death in 3 cases, non-fatal myocardial infarction in 2 cases in treatment group, and death in 4 cases, non-fatal myocardial infarction in 2 cases in control group (χ~2 =0. 620, P>0. 05). Low-dose group had a lower incidence of adverse reactions. Conclusions The efficacy of low-dose clopidogrel for patients with UAP is not inferior to conventional-dose, and the safety is well.

The aim of the experimental study is to investigate shortterm toxicity of an initial domestic Methotrexate microspheres(MTX-ms)by hepatic arterial infusion in rats,provide some experimental bases for clinic interventional treatment of liver carcinoma with this new chemoembolization agent.Compareing with control group and MTX group, MTX-ms of largedoses could result in temporal rise of GPT and AKP,deterioration or necroses of animal's liver at different degrees,12 days later a number of microspheres could still be found in the small arteries of the necrotizing area.No pathological changes related to microsphere could be found in other main organs(heart,spleen,lung and kidney).Results suggested that chemoembolization effect of MTX-ms is relatively strong;for effectively oc- cluding blood flow of hepatic arteries on the level of small arteries.Meanwhile MTX-ms oc- clud blood supply of liver carcinoma,they may also cause damages of normal liver tissue. Clinically more attention ought to be paid to the dosage of MTX1 microspheres and thus avoid the overflow of more microspheres to the normal liver tissue causing damage.

Objective: To study the pharmacological effects of Zhong Feng Kang on model mice with cerebral ischemia and after restoration of blood flow. Methods: To make the model of cerebral ischemia and after restoration of blood flow with thread embolism, and measure the area of cerebral infarction and observe cerebral pathologic change. Results: Zhong Feng Kang could reduce the area of cerebral infarction, improve cerebral pathologic change on model mice. Conclusion: The results confirmed that the clinical data of Zhongfengkang would provide a basis of pharmaceutical application

[Objective]To discuss the relation-ship between AAONFH(advanced alcoholic osteonecrosis of femoral head)and extended overdose drinking.[Method]Reviewed 165 cases of total hip arthroplasty,to analyzed the clinical data among 27 AAONFH cases,reviewed the literatures,discussed the pathogenesis of AAONFH and the relation-ship between blood biochemistry and blood cloting funtion and compared the experimental results among literatures.[Result]Theres various factors resulted in osteonecrosis of the femoral head associated with alcohol long-term over intake.Individuals consuming more than 750 ml of alcohol daily were at greater risk of double or half ONFH,Theres no change in biochemical test,but blood clotting funtion in this case would degrade,osteoarthritis of hip would synchronize.[Conclusion]Individuals consuming more than 750 ml of alcohol daily have the potentiality of ONFH;Its no specificity significance in biochemical test,the necrosis extent of the femoral head is relative to the capacity and times of alcohol intake.THR(total hip replacement)is the best treatment for AAONFH,but theres more staxis potentiality in this cases.

Objective To investigate the clinical effect of initiative content reduction surgery in the herniorraphy on the prevention and treatment of postoperative intra-abdominal hypertension of obese patients with giant ventral hernia.Methods The retrospective cross-sectional study was adopted.The clinical data of 62 obese patients with giant ventral hernias who were admitted to the Chao-Yang Hospital of Capital Medical University from January 2011 to December 2015 were collected.The initiative content reduction surgery was adopted during the herniorraphy of ventral hemia.Observation indices:(1) surgery situations:operation time,length of resected intestines,volume of intraoperative blood loss.(2) Postoperative recovery situations:change between preoperative and postoperative urethral bladder pressure,organ function of heart,lung,liver and kidney,time of gastrointestinal function recovery,time of drainage tube removal and duration of postoperative hospital stay.(3) Postoperative complications:incisional infection and intestinal fistula.(4) Follow-up situations.Follow-up using outpatient examination at 1 week,1 month,3 months and 6 months after surgery and using telephone interview at postoperative year 1 was conducted up to June 2016.The follow-up included hernia recurrence and chronic infection.Measurement data with normal distribution were represented as x ± s.Measurement data with skewed distribution were represented as M (range) and analyzed by rank-sum test.Results (1) Surgery situations:all the 62 patients received successful herniorraphy of giant ventral hemia combined with initiative content reduction surgery.Operation time,length of resected intestines and volume of intraoperative blood loss were (115 ±22)minutes,(207 ± 64)cm and (52 ± 35)mL.(2) Postoperative recovery situations:the preoperative urethral bladder pressure was 18 cmH2O (range,15-22 cmH2O,1 cmH2O =0.098 kPa) and postoperative urethral bladder pressure was 8 cmH2O (range,6-11 cmH2O),with a significantly statistical difference between before and after surgery (Z =-9.662,P ＜ 0.05).There was no abnormal function of heart,lung,liver and kidney after operation.The time of gastrointestinal function recovery,time of drainage tube removal and duration of postoperative hospital stay were 3.8 days (range,3.0-6.0) days,(3.8 ± 1.1) days and (14.5 ± 1.9) days.(3)Postoperative complications:of 62 patients,4 were complicated with incisional infection and improved after symptomatic treatment.There was no intestinal fistula.(4) Follow-up situations:all the 62 patients were followed up for (36 ± 19) months.During the follow-up,3 patients had incisional hernia recurrence and then were followed up without reoperation.No chronic infection occurred.Conclusion Initiative content reduction surgery is effective and feasible in the prevention and treatment of intraoperative intra-abdominal hypertension of obese patients with giant ventral hernia.

Objective To study the tumorigenetic characteristics of side population (SP) cells and their exsistence in gastric cancer cell lines and tissues.Methods Flow cytometry and the DNA-binding dye Hoechst 33342 staining were used to analyze sorted SP cells in 3 gastric cancer cell lines(SGC-7901,BCIC-823 and MKN28).SP cells and non-SP cells(main population cells)isolated from SGC-7901 cell line weresubcutaneously injected into 36 nude mice with 500,5000 or 50 000 cells per mouse,respectively.Thetumorigenity was observed 8 weeks after injection.The expression of ATP-binding cassette sub-family Gmember 2(ABcG2)mRNA in three gastric cell lines and its level in gastric cancer tissues were detected by real-time PCR and immunostaining.respectively.Results The proportion of SP cells was accounted for 1.0%in SGC-7901 cells and 1.3%in BGc-823 cells.No SP cell was found in MKN28 cells.As low as 500 SP cells or 50 000 non-SP cells could initiate tumors in mice.The expression of ABcG2 mRNA was higher in SGC-7901(O.162)and BGC-823(O.096)cell lines than that in MKN28 cell line(0.005).The value of AtCG2 mRNA/beta-aetin mRNA and protein in gastric cancer tissues was different from those in gastritis tissues.Condasimm SP cells have strong ability of tumorigenesis compared with non-SP cells.The expression of ABCG2 is found in gastric cancer tissues and part gastritis tissues.The more the SP cells in gastric cell lines,the higher the expression of ABCG2.

Objective To establish a way to measure the injury severity of articular surface due to posterior malleolus fracture and investigate its clinical significance based on three-dimensional reconstruction technique.Methods Between May 2009 and March 2014,138 cases of peri-ankle injury combined with posterior malleolus fracture were treated.Lateral radiographs were reviewed to measure the ratio of posterior fragment area to distal tibial plafond area using the common method.Three-dimensional CT images were examined to measure ratio of the area of injury using the three-dimensional measuring method.Statistical comparison was made using the t-test and intraclass correlation coefficient (ICC).Results Measurement failed on 33 lateral radiographs and 13 three-dimensional CT images.Six cases cannot be measured by both imaging technology,so results of 98 cases were compared.Ratio of posterior fragment area to tibial plafond area was (16.2 ± 7.2) ％ measured by radiographs and was (29.6 ±10.1) ％ by three-dimensional CT scans (P ＜ 0.05).Three-dimensional CT measurements showed higher intra and inter-observer agreement (ICC of 0.973 to 0.942) than that in radiographic measurements (ICC of 0.875 to 0.860).Conclusion Three-dimension CT assessment of the extent of injury to articular surface because of posterior malleolus fracture is reliable and reproducible,but radiographic assessment may underestimate the injury and influence the choice of surgical indications.

Objective The aim of this study was to observe the growth difference and expression of cytochrome C of skin hair follicles in neonatal mice .Methods The morphology of different skin hair follicles of neonatal mice ( postnatal day 1-9)were observed by HE staining histology and cytochrome C was detected by immunohistochemistry .Results The skin hair follicles in different parts of neonatal mice showed differences not only in morphology but also in developmental pe -riods.Hair follicle growth in the back and tail skin had a nonlinear and growing period .After the nonlinear and growing pe-riod they began to grow rapidly .The tail development was slightly slower than that on the back .The hair follicles of vibris-sae were very special , and started to develop without a stable period .Conclusions The results of morphological observa-tion and cytochrome C immunohistochemistry demonstrate that differences exist in the hair follicle morphology and develop -mental times in the skin of different parts of the body in neonatal mice .

Objective To observe the formation process with 3.0 T MRI dynamically, and to discuss the feasibility of molecular imaging studies on restenosis. Methods The models were built with balloon (2.0 F) injury which were separated into restenosis group (n=48) and control group (n=48). Zero h, 24 h, 1 week, 2 week, 4 week and 8 week after surgery, 3.0 T MRI scanning (T1WI, T2WI, PDWI) was performed respectively, the vascular of injured side were obtained for HE staining to observe the pathological changes, to analyze the measurement of neointimal area (IA), intimal proliferation index (IHI), lumen area (LA) and stenosis rates, correlation between HE staining measurements and MR images were analyzed. Two weeks after the injury, the restenosis model of rats (n=8) and control rats (n=8) were injected ultrasmall superparamagntiec iron oxide (USPIO,1 mmol/kg) by tail vein, respectively. 3.0 T MRI scanning (T2WI) was underwent at 0 h and 24 h after injection, the change of the arterial wall T2 signal was quantitatively analyzed and the relative signal intensity (rSI) and relative change rate (rSIC) of the vessel wall were calculated. Reference to MRI images, corresponding line segments were taken for Perl's blue staining and immunohistochemically staining of macrophages. One-way ANOVA, Pearson and t test were used for statistical analysis. Results In the early?term (0 h,24 h), the wall and surrounding high signal organization boundary was not clear, there was no obvious morphological change of the lumen. In the medium?term (1, 2 week), signal of the injured wall increased with different extents, wall thickening and luminal narrowing was progressive, the inwall was coarse. In the later?term (4, 8 week) wall signal got slightly lower, wall thickness, lumen change were not significant, the wall area and LA were significantly associated with pathologic measurement result (r value were 0.978, 0.732; P<0.05). In the control group, signal of wall and lumen morphological change were not significant among the different time points. IA were (0.131 ± 0.011) mm2, (0.588 ± 0.017) mm2, (1.061 ± 0.033) mm2, (1.192 ± 0.034) mm2;1, 2, 4, 8 week after injury, respectively, IHI were 0.235 ± 0.022, 0.578 ± 0.013, 0.715 ± 0.011, 0.737 ± 0.009, respectively, stenosis rates were (5.586 ± 0.987)%, (25.395 ± 1.112)%, (40.019 ± 1.298)%, (41.890 ± 0.951)%, respectively, difference between groups were statistically (P<0.05). In the control group, there was no significant differences of medium area, luminal stenosis and neointimal formation respectively at different time points (P>0.05). rSI was 1.582±0.051 after the injection of USPIO, then 24 h after injection of USPIO, T2 signal of the vessel wall was reduced significantly, rSI was 1.260 ± 0.088, rSIC was (-20.249 ± 6.489) % with statistical difference (t value was 8.924,P<0.05). But there was no statistical difference in control rats (P>0.05). Perl's staining combined with immunohistochemical staining confirmed that the iron particles were taken by the macrophage's phagocytosis just in the neointimal. Conclusion 3.0 T MRI is capable of demonstrating the vessel wall and lumen changes dynamically, and the measurements are correlated with pathological results. USPIO can be consumed by macrophages in the neointimal, resulting in T2 signal of the vessel wall decreased significantly.

A comprehensive review was conducted to evaluate characteristics of the innovative research fund in a military hospital during past five years.We created a special index system according to the features of this innovative research fund:short supporting period,less amount of funding,and strict limit to the pre-study with the combination of common Research Performance Indicators.We use this index system to evaluate all finished projects and scored their performance.Other factors,such as research area,age of researchers,and job title,were also combined to analyze the relationship between funded research performance and fund characteristics.We found that all projects with higher performance score in past 5 years were conducted by young researchers,while this meets our original intention that using this fund to support junior scientists.In addition,we also found that the process of project assessment was fire and scientific,and funding for key research disciplines provided high level research outcomes.