BACKGROUND:The comfortable shoes can absorb or reduce the impact force from the ground. Is the damped system is absent in shoes to relieve the impulse,the feet will be extremely tired,even damage the human knee joint,waist,back and brain. OBJECTIVE:To measure the changes of human plantar pressure by different sole hardness through the measurement system of plantar pressure. DESIGN,TIME AND SETTING:An observation experiment was performed in the Shanghai University of Sport between December 2008 and February 2009.PARTICIPANTS:Six volunteers wearing the experimental designed shoes were recruited from Nanjing Institute of Physical Education.METHODS:Three pairs of experimental shoes weighing 103 g were measured with shore hardness tester,as 51,62 and 69 hardness values. Accordingly they were named soft shoes,medium hardness shoes and hard shoes. The subjects were asked to do a 60-minute walk test at the speed of 2 m/s on the running platform with the experimental designed shoes,and they were determined using the insole plantar pressure measurement system of German's Novel style series of Emed-pedar.MAIN OUTCOME MEASURE:The pressure,contact area and impulse in the sole of foot.RESULTS:With the increase in hardness soles,the pressure of center plantar was shown to move from the medial first metatarsal outwards by turns. Compared with barefoot walking,the trail length of the center plantar was prolonged in subjects with medium hardness shoes and hard shoes,while shortened in subjects with soft shoes. The total pressure when you walked with soft shoes and medium hardness shoes were reduced than barefoot walking,and the pressure of walking phase wearing these two types of shoes were also reduced,while total pressure and walking phase pressure with hard shoes were both increased compared with barefoot walking. The contact area was similar between soft shoes and medium hardness shoes,but the smallest in the hard shoes. Except the increase in the initial 10 minutes,the soft shoes had no change with the medium hardness shoes. The hard shoes were firstly increased but then declined. The total impulse of medium hardness shoes was the closest to bare feet,while that of soft shoes and hard shoes were increased compared with bare foot.CONCLUSION:The plantar pressure was the greatest in the hard shoes,then medium hardness shoes and last soft shoes;the contact area was the greatest in soft shoes,then medium hardness shoes and last hard shoes;the impulse was the greatest in hard shoes,then soft shoes,and last medium hardness shoes.

BACKGROUND: Lumbar spondylolysis is the common cause of teenagers' low back pain. It should apply internal fixation if conservative treatment is invalid. There are a variety of surgeries, which aims to alleviate pain and bony fusion of pars defect.OBJECTIVE: To observe clinical outcome of bone graft of pars defect plus temporary single segmental pedicle screw rod fixation for adolescent lumbar spondylolysis.METHODS: A total of 32 adolescent patients of lumbar spondylolysis were treated by bone graft of pars defect plus temporary single segmental pedicle screw rod fixation. All the patients had bilateral spondylolysis. 20 patients had no lumbar spondylolisthesis, while the others had I° spondylolisthesis. All the patients received lumbar radiograph, CT and MRI. Visual analogue scale and Oswestry disability index were utilized to evaluate pain improvement before and after operation. MacNab was used to assess efficacy. Bone graft healing at isthmus was observed with lumbar CT after fixation. The internal fixation was removed after bone fusion, then the motion of the fixed segment and the degeneration of adjacent intervertebral disc occurred were recorded.RESULTS AND CONCLUSION: (1) Completed bone fusion of pars defect was achieved in all the patients. The average period of bone union was 7.4 months. (2) The visual analogue scale and Oswestry disability index scores were significantly improved after surgery in all patients (P < 0.05). (3) The fixed segment reserved the motion after internal fixation removal. The signal of adjacent intervertebral disc of fixed segment had no changes compared to preoperative MRI. (4) Bone graft to repair isthmus defect plus temporary single segmental screw rod fixation for adolescent lumbar spondylolysis is very effective, the bone fusion is completed, and temporary fixation may effectively alleviate the degeneration of adjacent disc.

In recent years,it has been found high myopia is significantly related with primary open-angle glaucoma.Myopic retinopathy is high risk factors of primary open-angle glaucoma,and the retinal degeneration of high myopia is similar to the feature of primary open-angle glaucoma,which cause difficult to early diagnosis.How to identify early-stage glaucoma from high myopia patients,and give early intervention treatment has become a difficult problem.This article reviews research literature about the relationship between high myopia and between primary open-angle glaucoma.

Background:Gastric cancer is the second most frequently diagnosed cancer and the third cause of cancer death in China. Selection of candidates in high risk of gastric cancer by a simple and non-invasive marker with high sensitivity and then undergoing endoscopy is an optimal approach for large scale gastric cancer screening. Aims:To evaluate the clinical value of using trefoil factor 3(TFF3)as a serum biomarker for gastric cancer screening. Methods:Serum samples of 49 gastric cancer patients and 29 healthy subjects were collected for measurements of serum TFFs by ELISA from Jul. 2013 to Jan. 2014 at Ningbo Medical Treatment Center Lihuili Hospital. ROC curve and the area under curve(AUC)were used to verify the diagnostic performance of serum TFF1,TFF2 and TFF3 for gastric cancer. Correlations between TFFs and clinicopathological characteristics of gastric cancer were further analyzed. Results:Serum concentration of TFF3 in gastric cancer group was significantly higher than that in healthy controls[(43. 57 ± 19. 49)ng/ mL vs.(29. 97 ± 14. 20)ng/ mL, P < 0. 01],but no significant differences were found in serum concentrations of TFF1 and TFF2 between the two groups (P > 0. 05). AUC of serum TFF1,TFF2 and TFF3 for diagnosis of gastric cancer were 0. 56,0. 56 and 0. 83, respectively,which indicated that the performance of TFF3 was the best. Taken 33. 0 ng/ mL as the cut off value of TFF3, the sensitivity and specificity were 63. 3% and 82. 8% ,respectively,and the odds ratio for predicting gastric cancer was 8. 27. Significant correlations were existed between serum concentration of TFF3 and TNM stage,differentiation and lymph node metastasis of gastric cancer(P < 0. 05). Conclusions:Serum TFF3 is a promising non-invasive biomarker for gastric cancer screening.

Objective To observe the adjuvant therapy efficacy of Saccharomyces boulardii sachets in liver cirrhosis patients with spontaneous bacterial peritonitis(SBP).Methods 72 liver cirrhosis patients with SBP were randomly divided into the observation group and control group.The patients in the control group (30 cases) were giv-en routine medical treatment such as anti-infection,correction of hypoproteinemia,liver protection,and diuresis,etc. At the base of the control group,the patients in the observation group (32 cases) were orally given Saccharomyces boulardii ( Baili Pharmaceutical Factory,French) 0.5g for one time,two times daily for 10 days.The changes of serum interleukin-6(IL-6),pmcalcitonin (PCT) and hypersensitive c-reactive protein (hs-CRP) levels in the two groups were observed and compared before and after treatment, and curative effect and safety were also observed. Results Before treatment,the serum IL-6,PCT and hs-CRP levels in the two groups had no obviously statistical difference(all P>0.05),but after treatment,the serum IL-6,PCT and hs-CRP levels of the observation group were much lower than those of the control group[(60.50 ±19.10) pg/mL vs (98.32 ±17.20) pg/mL,(1.80 ± 0.34)μg/L vs (6.38 ±3.56)μg/L,(6.20 ±4.15) mg/L vs (20.28 ±8.30) mg/L,t=8.147,7.246,8.529,all P<0.01].Meanwhile,the total effective rate of the observation group was significantly higher than that of the control group(93.75%vs 73.33%,χ2 =4.771,P<0.05).The incidence rate of DAR between the two groups had no obvi-ously statistical difference(9.38% vs 13.33%,χ2 =0.242,P>0.05).Conclusion Saccharomyces boulardii can significantly reduce serum IL-6,PCT and hs-CRP levels of liver cirrhosis patients with SBP,and reduce inflamma-tion reaction to control development of SBP.

Objective To investigate the pluripotency of human gingival fibroblasts (hGFs), and provide a novel cell source for tissue engineering. Methods With informed consent from volunteers, fresh and healthy gingiva were collected. The hGFs were obtained from the gingiva by tissue culture. The third passage of hGFs was cultured in osteogenic medium, chondrogenic medium and adipogenic medium. Cells without differentiation were taken as control. Cells were examined by al?kaline phosphatase (ALP) staining, Alizarin red staining, Alcian blue staining and oil red O staining for detecting of the abili?ty of differentiation pluripotency. Real-time polymerase chain reaction was applied to examine the expression of osteogenic marker genes ALP, runt-related transcript factor 2 (Runx2), chondrogenic marker aggrecan (AGR) and adipogenic marker peroxisome proliferator-activated receptor gamma 2 (PPARγ2). Results The hGFs cultured in osteogenic medium showed massive violet deposit at day 7 and calcium nodulus at day 28, meanwhile, the expressions of ALP and Runx2 were higher than those of control (P<0.01). In chondrogenic group cells were found blue deposit at day 14. In adipogenic group lipid-filled droplets stained with oil red O were found in cells at day 14. However, hGFs in control group had no any positive stain?ing. Furthermore, expressions of AGR and PPARγ2 were significantly higher than those of control (P<0.01). Conclusion Human gingival fibroblasts have the pluripotency of osteogenic, adipogenic and chondrogenic differentiation.

Establishment of quality management system (QMS) plays a critical role in the clinical data management (CDM). The objectives of CDM are to ensure the quality and integrity of the trial data. Thus, every stage or element that may impact the quality outcomes of clinical studies should be in the controlled manner, which is referred to the full life cycle of CDM associated with the data collection, handling and statistical analysis of trial data. Based on the QMS, this paper provides consensus on how to develop a compliant clinical data management plan (CDMP). According to the essential requirements of the CDM, the CDMP should encompass each process of data collection, data capture and cleaning, medical coding, data verification and reconciliation, database monitoring and management, external data transmission and integration, data documentation and data quality assurance and so on. Creating and following up data management plan in each designed data management steps, dynamically record systems used, actions taken, parties involved will build and confirm regulated data management processes, standard operational procedures and effective quality metrics in all data management activities. CDMP is one of most important data management documents that is the solid foundation for clinical data quality.

Objective:To investigate the diagnostic value of the promoter methylation of plasma RNF180 gene and its protein ex-pression for the detection of gastric cancer. Methods:Methylation-specific polymerase-chain reaction (MSP) and enzyme-linked immu-no-sorbent assay (ELISA) were performed to detect DNA methylation and protein expression of the RNF180 gene, respectively. The correlations of DNA methylation and protein expression of the RNF180 gene with the clinico-pathological parameters of gastric carcino-ma were then separately analyzed. Results:MSP showed that the methylation rates of the RNF180 gene were 62.75%and 21.88%in the plasma of patients with gastric carcinoma and healthy volunteers, respectively;this result indicated that the two groups significantly differed (P<0.01). The methylation of the RNF180 gene was associated with tumor size, clinical stage, tumor differentiation, lymph node metastasis, and distant metastasis (P<0.05). ELISA results showed that the protein expression of the RNF180 gene [(23.22 ± 1.36)μg/mL] was significantly lower (P<0.01) in the plasma of patients with gastric carcinoma than in the plasma of healthy volunteers [(34.25 ± 2.44)μg/mL]. However, the protein expression of the RNF180 gene was not associated with clinicopathological parameters (P>0.05). Conclusion:The RNF180 gene is expressed at a hypermethylation rate, and the corresponding protein expression level is de-creased in the plasma of individuals with gastric carcinoma. Therefore, RNF180 gene methylation in plasma could be applied to detect microinvasion for the clinical diagnosis of gastric cancer.

OBJECTIVE:To study the analgesic effect and mechanism of Gutongtie paste on model rats with formaldehyde-in-duced pain. METHODS:60 SD rats were randomly divided into blank group,model group,Gutongtie paste low-dose,medi-um-dose,high-dose groups(0.594,1.188. 2.376 g/paste,containing crude drug 0.48,0.96,1.92 g)and prednisone acetate group (ig,0.0054 g/kg,external bonding matrix). Model rats with pain was induced by formaldehyde method and immediately adminis-trated after modeling. Electronic tenderness instrument was adopted to determine the pain threshold of rats'ankle joint after adminis-tration of 1,2,3,4,6 h. After 6 h,blood sample 0.3 mL was taken from abdominal aorta then rats were sacrificed. Enzyme linked immunosorbent assay (ELISA) was conducted to determine the β-endorphin (β-EP),prostaglandin E2 (PGE2) contents;spectrophotometry was used to determine nitric oxide(NO)content in rats'serum and inflammatory tissue;and radioimmunoassay was adopted to detect the substance P content in rats'serum,inflammatory tissue and brain tissue. RESULTS:Compared with be-fore modeling,pain thresholds in model group at each period were significantly decreased (P<0.05 or P<0.01). Compared with blank group,PGE2,NO of rats,substance P content in inflammatory tissue and brain tissue in model group were significantly in-creased (P<0.05 or P<0.01). Compared with model group,pain thresholds in Gutongtie paste groups at corresponding time points were increased,PGE2 and substance P contents in inflammatory tissue and brain tissue were decreased (P<0.05 or P<0.01);β-EP and NO contents in serum in Gutongtie paste medium-dose,high-dose groups(P<0.05 or P<0.01),NO contents in serum in Gutongtie paste high-dose group were decreased(P<0.05). CONCLUSIONS:Gutongtie paste has a certain analgesic and anti-inflammatory effect,and the mechanism may be related to reducing PGE2, NO, substance P contents, increasing β-EP content.

Compare and analyze the standards related to centrifuge apparatus and make corresponding suggestions in allusion to the problems existed in the test method and physical performance during product standard drafting process.
Blood Component Removal ; instrumentation ; Centrifugation ; instrumentation ; standards ; Device Approval ; standards