Objective In order to understand the quality of drinking water sources and the environment of the Qinghai-Tibet Railway areas. Methods In 2002-2004, the first and second phase of the project of Qinghai-Tibet Railway, 37 sampling sites were chosen in the dry and rainy seasons and the water samples were analyzed according to the national standard test methods. Results In the first phase of the project, the eligible rates of the 39 test indexes of the water sources of 23 sampling sites in the Qinghai-Tibet Railway areas were 82%-95% in the dry season and some decreased in the rainy season. In the second phase, the eligible rates of the test indexes of the water sources of 14 sampling sites were 50%-100% in dry season and in the rainy season, the trend was the same as in the first phase. Conclusion Among the 37 water resources in the Qinghai-Tibet railway areas,the percent of gradeⅠ, gradeⅡ, grade Ⅲ and above grade Ⅲ water source was 67.57%,13.51%,2.70% and 16.22% respectively, some water sources can not be used as the drinking water sources due to the bad quality.

Objective To study the relationship between M3 receptor and prostastic tumor by analyzing the expressions of M3 and vascular endothelial growth factor(VEGF)in adult human normal and neoplastic prostatic gland tissue. Methods The specimens included 36 normal prostates(fresh),36 benign prostatic hyperplasia(BPH)tissue(fresh),and 36 cancer tissue(8 fresh).RT-PCR was used to detect M3 receptor,VEGPs genetic expression.At protein level,VEGF,Ms receptor,CD34 were detected by western-blot and immunohistochemical method. Results VEGF and M3 receptor's genetic expressions were higher in prostate cancer tissue(O.8354±0.1897,0.7824±0.2047)than in BPH tissue(0.6735±0.1603,0.6021±0.1637),while the expressions of these genes were lowest in normal prostate tissue(0.5425±0.1629,0.3436±0.1581)(P<0.001).There was a positive correlation between M3 and VEGFs gene expression(r=0.4999,P

Objective To explore the application value of real-time three-dimensional echocardiography (RT-3DE) in diagnosis of structural heart disease through a comparison with two dimensional echocardiography (2DE).Methods Ninety-two patients with heart disease were enrolled from October 2009 to February 2014 , all of whom were examined by RT-3DE.By cutting and spiraling structural 3D images of lesions in regions of interest , we made a diagnosis of lesions .In addition, the size of atrial(ASD) and ventricular septal defects (VSD),based on surgical results,was measured and analyzed.By comparing the coherence and difference of diagnosis on structural heart disease examined by 2DE and RT-3DE, the accuracy and superiority of RT-3DE were evaluated.Results (1)The 3D images of 92 patients with heart disease were successfully obtained by RT-3DE.The structure of lesions was displayed directly from various angles .In addition, the position, scope and degree of lesions and the spatial relationship of adjacent structures were accurately confirmed.RT-3DE provided more direct, accurate and abundant information than 2DE.(2)In the diagnosis of congenital heart disease, the diagnostic accordance rate of RT-3DE was the same as that of 2DE, but was slightly higher in the diagnosis of valvular disease and other lesions .( 3 ) Compared with 2DE, the ASD maximum diameters obtained from RT-3DE were more correlaed with surgical findings (r=0.94,0.86),so were the VSD maximum diameters (r=0.93, 0.84).Conclusion RT-3DE is easy to operate and quick to produce image ,which can provide more spatial information than 2DE in structural heart disease diagnosis , increase the accuracy rate of diagnosis , and serve as a supplement to 2DE.

BACKGROUND:There was no effective method to thoroughly treat tibial bone defect and soft tissue defect. The application of Ilizarov technique solved shortening deformity, soft tissue injury and joint contracture to some degrees.
OBJECTIVE:To discuss the effects of Ilizarov external fixation on treatment of tibial bone defect and the parameter selection of Ilizarov steel ring.
METHODS:We retrospectively analyzed the clinical data of 67 patients with tibial bone defects, who were treated and fol owed up from March 2007 to January 2012. Al patients had fracture of tibia and received one-stage operation. After treatment, postoperative limb suffered from tibia osteomyelitis and soft tissue injury. Ilizarov external fixation was placed in the limb. The length of defected tibia and area of defected soft tissues were compared at 1, 3 and 6 months after external fixation and final fol ow-up. The ankle joint Kofoed score and knee joint ROM score were observed before and after external fixation. In final fol ow-up, functional recovery was evaluated in accordance with diagnosis and treatment criteria of Johner-Wruhs fracture of shaft of tibia.
RESULTS AND CONCLUSION:A total of 67 patients were fol owed up for 6 to 35 months. Bone defects in 67 cases were rebuilt and the fracture was healed, but five cases had poor healing. Among 44 cases of soft tissue injury, wound had healed in 40 cases, and wound had not healed in 4 cases. The length of tibia defect and the area of soft tissue defects were improved at 1, 3, and 6 months after the operation (P<0.05). After operation, the ankle joint Kofoed score and knee joint ROM were significantly better than those before operation (P<0.05). During final fol ow-up, the excellent and good rate of each therapeutic plan was 85%. For the tibial osteomyelitis bone defect with the merged skin defect, the trauma was smal using Ilizarov technique, which can avoid several complicated operations, shorten the time and reduce the expenses of treatment, but there were some weaknesses and limitations. The size and material of Ilizarov external fixation affect the efficiency of the fixation and postfixation adjustment.

Objective To study the effects of γ-IFN on the expression of HLA-G mRNA in primary cultured astrocytoma cells. Methods Different concentrations of γ-IFN were added to primary cultured cells, and HLA-G mRNA were detected by RT-PCR. Results After γ-IFN treatment, HLA-G mRNA can not be determined from HLA-G originally negative astrocytoma cells. The expression of HLA-G are up - regulated in all original HLA-G positive astrocytoma cells in a dose-dependent manner. Conclusion γ-IFN can increase the ex-pression of HLA-G gene in the primary cultured astrocytoma cells which HLA - G are originally positive.

Objective To compare transurethral enucleation of plasma chamber(TUERP)plasma and tran-surethral resection of the prostate(PKRP) treatment efficacy,security and the impact on sexual function.Methods 80 cases of BPH patients were randomly divided into two groups,TUERP and PKRP.Follow-up for 12 months,compared two groups maximum urinary flow rate(Qmax),residual urine volume(PVR),serum prostate-specific antigen(PSA) level,prostate volume(PV),international prostate symptom score(IPSS),quality of life score(QOL),the bladder prostate prominent(IPP)and other indicators and erectile dysfunction and retrograde ejaculation changing circum-stances were compared.Results In the weight of prostate surgery there were significant differences,in which removal of the weight of TUERP group significantly higher than PKRP group.After 12 months,32 cases of TUERP patients and 31 patients of PKRP group completed follow-up.After 1,3,6,12 months,Qmax,PVR,IPSS,QOL improved than that before surgery.Two groups were compared after a month,and there were significant differences in prostate volume,which TU/ERP group was significantly smaller than PKRP group.After3 months in the prostate volume and residual U-rine volume there were significant differences,both TUERP group Was significantly smaller than PKRP group.After 6 months and 12 months in the prostate volume,residual urine volume and there were significant differences in PSA,both TUERP group was significantly smaller than PKRP group.ED,and retrograde ejaculation occured after the rate of two between the two groups was no significant difference.Conclusion Transurethral enueleation of plasma chamber on sexual function in patients,but through the appropriate personalized treatment,sexual function in some patients was recoverable.

Objective To investigate the brachial plexus injury patients regional and national characteristics,epidemiological characteristics.Methods Reference to foreign brachial plexus injury epidemiology survey methodology,retrospective analysis of five representative hospitalsthe trauma center in Urumqi,Xinjiang during January 2010 and May 2013 were treated 166 cases of patients with brachial plexus injury medical records.Results The incidence rate of brachial plexus injury was 1.17％ in this 5 trauma center.From 20 to 49 age group accounted for 69.87％,the ratio of male to female was 4.53:1.Workers and farmers accounted for 51.8％,Uygur,Han accounted for respectively 62.04％,24.69％.Kashi,Aksu,Urumqi accounted for respectively 22.89％,12.04％,8.43％.Motor vehicle accidents,high-altitude fall injury and injuries caused by birth trauma accounted for respectively 33.73％,31.92％ and 9.67％.Injury type:root,trunk,bundle/bundle branch injury cases accounted for respectively 28.91％,27.10％,40.36％.Conclusion Brachial plexus injury occurs mainly in young men with low income,motor vehicle accidents,and high-altitude fall injury are dangerous injury factors,different nationalities,different areas occurs constitutes obvious difference,neonatal birth trauma caused by brachial plexus injury constitute relatively high.

Objective To explore the viscoelasticity of relaxed myocardium in vivo through indentation method with an intervention ultrasound indentation system (IUIS). Methods Old myocardial infarction (OMI) models of canine were established by ligating left anterior descending branch of coronary artery for 3 months. The indentation creep tests were used respectively in OMI group and shame group (n=8, each) by IUIS in middle and advanced diastole stage in vivo. Test data were processed with three-parameter solid viscoelasticity model, and the viscoelastic parameters, such as instantaneous elastic modulus (E1), relaxation modulus (E∞), creep elastic modulus (E2) and viscous damping coefficient (η) in normal and infarcted myocardium were obtained and compared. Results All the parameters of E1, E∞, E2 and η increased obviously in OMI group than in sham group shown as follows: 27.81±6.74kPa vs. 6.78±2.43kPa; 17.87±3.59kPa vs. 4.52±1.56kPa; 49.54±14.35kPa vs. 16.82±12.37kPa and 1.97±0.78Pa.s vs. 0.66±0.40Pa.s. The differences were statistically significant (P<0.05). Conclusions IUIS is a feasible method to assess the viscoelasticity of relaxed myocardium in vivo. Three-parameter viscoelasticity model can be used to describe creep properties of relaxed myocardium. Both elastic modulus and viscosity resistance have increased in infarcted myocardium.

Objective To summarize clinical phenotypes and pathological characteristics in myopathies with tubular aggregates (TAs).Methods We reviewed 5 697 patients who performed muscle biopsies in our department between January 2001 and July 2015.We collected the cases with TAs and made classification based on their clinical diagnoses and pathological changes.Results Fifty-seven patients (1.00％) showed TAs in muscle specimens,including 50 (87.72％) males and 7 (12.28％) females.According to clinical,neurophysiological,pathological and genetic analysis,the diagnoses included 23 (40.35％) cases of periodic paralysis,7 (12.28％) cases of chronic alcohol intoxication,6 (10.53％) cases of congenital myasthenic syndrome,5 (8.77％) cases of exercise-induced cramps,3 (5.26％) cases of necrotizing myopathy,1 (1.75％) case of stromal interaction molecule 1-associated myopathy,limbgirdle muscular dystrophy 2E,myotonic dystrophy,myotonia congenita,paramyotonia congenitia,hypothyroid myopathy respectively.Other cases of unknown cause included unclassified distal myopathy,external ophthalmoplegia,white matter lesions,mental retardation,stroke,early onset weakness,pulmonary arterial hypertension.Besides TAs,pathological changes also included necrosis of muscle fibers (3 cases,5.26％),neurogenic changes (3 cases,5.26％) and muscular dystrophic changes (1 case,1.75％).Conclusions Our results indicated that TAs are usually found in males and could present in many types of hereditary or acquired neuromuscular disease as independent or accompanying changes.Periodic paralysis,chronic alcohol intoxication and congenital myasthenic syndrome are 3 major diseases causing myopathies with TAs.

Objective To analyze membrane attack complex (MAC) expression in different types of idiopathic inflammtory myopathy (IIM).Methods We enrolled 57 cases of dermatomyositis (DM) , 37 cases of polymyositis (PM) ,9 cases of sporadic inclusion body myositis (sIBM) and 15 cases of autoimmune necrotizing myopathy with anti-signal recognition particle antibodies (SRP-ANM) in Department of Neurology at Peking University First Hospital from 2011 to 2014, and used x2 test or Fisher exact test to analyze MAC expression in muscle fibers and endomysial capillaries respectively.Results The total MAC expression in DM, PM, sIBM and SRP-ANM was 75.4％ (43/57), 86.5％ (32/37), 4/9 and 13/15 respectively.The MAC expression in muscle fibers was 50.9％ (29/57), 81.1％ (30/37) , 3/9 and 13/15 respectively.The MAC expression in endomysial capillaries was 49.1％ (28/57) , 24.3％ (9/37) , 1/9 and 6/15 respectively.The MAC expression in muscle fibers and endomysial capillaries of sIBM was less than other types of IIM.The MAC expression in muscle fibers of PM and SRP-ANM was higher than DM and sIBM, but there was no statistically significant difference between PM and SRP-ANM.The MAC expression in endomysial capillaries of DM and SRP-ANM was higher than PM and sIBM, while there was no statistically significant difference between DM and SRP-ANM (x2 =0.397, P =0.574).The MAC expression in four types of IIM had regional distribution, of which 11.6％ (5/43) of DM showed bundle distribution.Conclusion There are differences in the damage of MAC in various types of IIM, the damage of MAC in SRP-ANM indicated the pattern of both DM and PM.