Objective To investigate the diagnostic and prognostic value of serum miR-155 for pancreatic cancer.Methods A total of 110 pancreatic cancer patients,70 chronic pancreatitis and 58 healthy individuals who admitted to the First People's Hospital of Hefei between January 2009 and August 2013 were prospectively enrolled.Their serum miR-155 levels were detected by real-time PCR.The receiver operating characteristic curve was employed to estimate the diagnostic accuracy of miR-155 for pancreatic cancer.Correlations between miR-155,carbohydrate antigen 19-9 (CA 19-9) and TNM stages were analyzed.The Kap1an-Meier approach and the Cox model were used to assess the prognostic value of miR-155 for pancreatic cancer.Results Pancreatic cancer patients had significantly higher serum miR-155 when compared either with chronic pancreatitis patients or healthy individuals (P ＜ 0.05 for both).The areas under the receiver operating characteristic curve were 0.82 (95％ CI:0.75 ～ 0.88) for miR-155,and 0.88 (95％ CI:0.82 ～0.93) for miR-155 combined with CA19-9.MiR-155 increased as the TNM stages advanced,and it was positively correlated with CA 19-9 (R2 =0.22,P ＜ 0.05).MiR-155 ≥ 1.46 △CT was independently associated with pancreatic cancer mortality,with a hazard ration of 2.88 (95％ CI:1.26 ～ 6.58).Conclusion Serum miR-155 is a useful biomarker for diagnosis and prognosis of pancreatic cancer.

Background and purpose:Radical nephroureterectomy can be performed in a variety of ways, and each method has its advantages and disadvantages. It still remains controversial for choosing the surgical methods. In this study, we chose six surgical methods and investigated the safety and efficacy of different methods in treating upper urinary tract carcinoma.Methods:We retrospectively analyzed 135 patients with upper urinary tract transitional cell carcinoma who underwent operations in our hospital from Jan. 2002 to Oct. 2013, and compared the data of six different operations in-cluding operating time, volume of bleeding, time of bowel function recovery and incidence of bladder carcinomas.Results:The operations were successfully completed in groups A and B. Five cases in group C were transferred into group A be-cause of failing to pull the nub of the ureter. Two cases in group D were transferred into group A because of failing to pull the nub of the ureter. Three cases in group E were transferred into group D and 1 case was transferred into group A because of adhesion or bleeding. One case in group F was transferred into group A because of bleeding. There was no statistically significant difference in survival rates among six operations.Conclusion:Six operations are all safe and effective for the treatment of upper urinary tract carcinomas. Each method has its advantages and disadvantages. We should choose differ-ent methods according to particular cases.

An introduction to general guidelines and practices of reforming the corporate governance of public hospitals in Weifang,Shandong province.Such guidelines and practices include the following:set up a government hospital administration,and clarify the rights and responsibilities of public hospital owners; clarify the independent status of legal person of the hospital to revitalize it; improve the check and balance mechanism to ensure its effectiveness and order.Such a reform has streamlined the management framework of public hospitals,and mobilized incentives of both the director and the staff,further enhancing the public benefit characteristics of the hospitals and satisfying the patients.

Objective To discuss the clinical application value of 256-slice helical CT 3D-imaging in guiding interventional occlusion therapy for patent ductus arteriosus (PDA).Methods A total of 40 patients with sonography-proved PDA were randomly divided into group A (angiography group) and group B (CT-guided group) with 20 patients in each group.For the patients of group A,occlusion of PDA was performed based on the intraoperative angiography findings;and for the patients of group B,occlusion of PDA was carried out according to CT examination results.Intraoperative cardiac ultrasound monitoring was adopted and the curative effect was evaluated.Results The morphology of PDA demonstrated on CT 3Dimaging in group B was highly consistent with the configuration of PDA displayed on intraoperative angiography in group A.The most narrow diameters of PDA in group B and group A were (3.88±1.59) mm and (3.63±1.41) mm respectively,and the lengths of PDA in group B and group A were (6.1±1.06) mm and (6.82±0.74) mm respectively;the differences between the two groups were not statistically significant (P＞0.05).The time spent for surgery in group B and group A was (34.3±9.11) min and (17.33±5.81) min respectively,and the intraoperative X-ray radiation doses in group B and group A were (33.93±11.0) mGy and (66.48±9.77) mGy respectively;the differences between the two groups were statistically significant (P＜0.001).In group B,the preoperative X-ray radiation dose from CT examination was (119.79±29.45) mGy,when it was added to the intraoperative X-ray radiation dose the total cumulative radiation dose of group B was strikingly higher than that of group A.Conclusion Contrast-enhanced 256-slice helical CT scan and 3D-imaging technique can replace intraoperative angiography to get accurate anatomical imaging information of PDA,which are very helpful for the performance of interventional occlusion of PDA,meanwhile,it can effectively reduce the damage to the punctured artery and shorten the operation time.However,the radiation dose is a factor that should be taken into consideration.(J Intervent Radiol,2017,26:206-209)

Objective To measure the expression of CD80 and CD86 in renal tissue of lupus nephritis (LN) and explore its mechanism in the development of LN.Methods Forty-nine patients with active LN and 9 patients with minor glomerular abnormalities tissues as controls were studied.The expression of CD80, and CD86 in renal tissues was detected by immunohistochemical methods.Results CD86 was expressed extensively in glomerulus, periglomerular area, tubular epithelial cells and peritubular interstitium, while CD80 was expressed only in tubular epithelial cells and peritubular interstitium.Moreover, the percentage of CD+80 and CD+86 cells in tubular epithelial cells and peritubular interstitium showed a tendency to increase with tubulointerstitial damage.The expression of CD80 and CD86 in renal tissue correlated with the systemic lupus erythematosus (SLE) disease activity index score, the degree of proteinuria, creatinine clearance and anti- dsDNA antibody.Conclusions This study shows that increased CD80 and CD86 expression with the progression of tubulointerstitial lesion might play an important role in the development of lupus nephropathy, and the tubulointerstitial expression of CD80 and CD86 could potentially serve as a surrogate marker of SLE disease activity.The co-stimulatory molecules CDg, and CD86 might play an important role in the pathogenesis of LN.

Objective To explore the value of fluid-attenuated inversion recovery (FLAIR)sequence and gradient echo T2 ?weighted image (GRE-T2 ? WI)in diagnosis of acute traumatic extra-axial hemorrhage.Methods 50 patients who were diagnosed as acute traumatic extra-axial hemorrhage by plain CT underwent FLAIR and GRE-T2 ? WI in acute stage.The diagnosis consistency (Kappa ),detection rate of subarachnoid hemorrhage(SAH),epidural hemorrhage(EDH)and subdural hemorrhage(SDH)were compared.The detection rates of SAH in 8 locations among FLAIR,GRE-T2 ? WI and combination of two sequences were analyzed by Chi-square test.Results 48 patients were enrolled in the study.The diagnosis consistency of SAH between FLAIR and GRE-T2 ? WI was high (k =1.0).The detection rate of SAH was 100% for both FLAIR and GRE-T2 ? WI.Comparing with GRE-T2 ? WI and combi-nation of two sequences,FLAIR tended to misdiagnose SAH in perimesencephalic cistern (P <0.05).The diagnosis consistency of EDH between FLAIR and GRE-T2 ? WI was high (k =1.0).3 patients with EDH were all detected by FLAIR and GRE-T2 ? WI. The diagnosis consistency of SDH between FLAIR and GRE-T2 ? WI was high (k =0.943).The detection rate of 12 patients with SDH was 100% in FLAIR,and 1 patient with SDH was missed by GRE-T2 ? WI.Conclusion The detection rate of acute traumatic extra-axial hemorrhage is high for both FLAIR and GRE-T2 ? WI.Combination of two sequences can improve the accuracy of acute traumatic extra-axial hemorrhage in clinic.

The simulator testing in vitro and computational simulation of the artificial knee joint wear are important methods to evaluate the wear performance of the prosthesis in vitro and to predict the clinical performance of knee joint products. Based on the method of literature search, this paper compares the mechanical and kinematic loading input curves carried out by Chinese scholars in recent years, standard curves, and Chinese measurement curves of two typical movements of gait. Data of vitro simulator test and computational simulation model are compared, summarized, and analyzed. The results show that the measured data of motion and load cannot be directly used as the loading conditions for the simulator wear test and computational simulation. The mechanics and kinematics data of Chinese people are different from the international standards. The domestic artificial knee joint in vitro simulator wear test methods are similar but the results of different test institutions are somewhat different. The computation wear prediction research is basically synchronized with foreign countries, but the problem that the calculated wear results are lower than that in vitro test is still unsolved. The artificial knee joint wear performance evaluation system based on Chinese knee joint mechanics and kinematics data is the forward direction of the research.

Objective To evaluate the feasibility and safety of prostatic artery embolization (PAE)via transradial approach in treating prostatic hyperplasia.Methods The clinical data of 18 patients with prostatic hyperplasia,who received C-arm CT-guided PAE via left or right radial artery access,were retrospectively analyzed.The following indexes were recorded:arterial spasm and injury of upper limbs,incidence of puncture point bleeding,postoperative radial artery pulse and congestion,blood supply and nerve injury of fingers,the surgical success rate,incidence of perioperative cerebral vascular complications,operation time,radiation dose and clinical curative effect.Results Among the 18 patients,PAE via left radial artery access was employed in 14,and PAE via right radial artery access was performed in 4.Bilateral PAE was carried out in 16 patients,and only unilateral PAE was able to be successfully accomplished in 2 patients as the prostatic artery opening of the other side was tortuous with stenosis.After PAE,decreased radial pulse was observed in one patient and ultrasound examination revealed decreased blood flow.The operation time ranged from 96 min to 245 min.The radiation dose received by the patient varied from 2435 mGy to 4958 mGy with a mean of (3342±156) mGy,which was not significantly different from the radiation dose received by the patients who underwent PAE via femoral artery access during the same study period (P=0.1167).Conclusion In treating prostatic hyperplasia,PAE by using transradial approach is clinically safe and technically feasible.

Objective To explore the clinical characteristics and prognostic factors of primary gastric lymphoma.Methods Clinical data of 78 primary gastric lymphoma patients treated between September 2012 and January 2017 in our hospital were analyzed retrospectively.Results 1-year and 3-year survival rate were 86％ and 68％ respectively.Univariate analysis showed that the four factors including the level of serum lactate dehydrogenase (x2 =35.088,P =0.000),Musshoff stage (x2 =29.930,P =0.000),pathology types (x2 =6.077,P =0.014),IPI score (x2 =21.337,P =0.000) were associated with the prognosis.Multivariate analysis showed that Musshoff stage was an independent risk factor for the prognosis when stage Ⅰ,stage Ⅱ (OR =1.075,95％ CI:0.060-19.107,P =0.961) were compared with stageⅢ (OR =11.994,95％ CI:1.042-138.083,P =0.046),or stage Ⅳ (OR =13.165,95％ CI:1.476-117.417,P =0.021).Conclusions Musshoff stage is an independent factor for the prognosis,surgical treatment can not prolong survival and chemotherapy is the therapy of choice.

Objective To investigate changes in gait level of patients after hip replacement, the variation trend of bone mineral density (BMD) around the prothesis was studied, so as to reveal the influence pattern of gait level at postoperative initial and long-term stages on bone reomodeling. Methods Based on adaptive bone remodeling theory, the finite element model of femer-prosthesis was developed. The BMD distribution was calculated using the initial and long-term gait level after hip replacement as the remodeling parameters. Gruen method was applied to quantify the BMD changes. Results At the postoperative initial stage, obvious variations existed in constant gait group and changing gait group. The maximum difference occurred in low gait group, resulting in the decrease of BMD by 41% in greater trochanter region. The improvement of gait level would promote the enhancement of BMD in proximal and middle region of the prosthesis, resulting in the increase of BMD by 47%. Long-term gait recovery would promote BMD recovery in middle and end region of prosthesis, with BMD increase by 2%-9%. Conclusions The research findings provide guidance for rehabilitation process of patients after hip replacement.