With the rapide development of medical imaging facilities, Traditional educational technology of experiment teaching in medical imaging have not adapted to modern imaging, In order to resolve the problem, we set up a multimedia experiment teaching system for medical imaging in 2006, The system teaching process was composed of experiment teaching,experiment question answering and experiment examination.

Objective To investigate the curative effect of Teprenone combined with esomeprazole for reflux esophagitis. Methods 96 cases of reflux esophagitis comfirmed by endoscope were obtained and divied into observation group and control group randomly. Both groups were offered with esomeprazole and motilium. Teprenone was added to the observation group and sucralfate was added to the control group. Clinical effective rate,healing rate,adverse reactions and one-year follow up were observed closely after the course of 8 weeks. Results The relief time of clinical symptom and total effective rate in the observation group were(9.3 ±3.5)d and 95.8% respectively,which were significantly higher than those in the control group(P ＜0.05). Endoscopic effective rate was 93.8% in observation group and 81.2% in control group respectively and statistically significant difference was observed (P ＜0. 05). Recurrence rate after one year in the observation group was 8. 3% ,which was significantly lower than in the control group (P ＜ 0.05). One case of headache and nausea occurred in both groups but no severe adverse reaction was observed. Conclusion Teprenone combined with esomeprazole were more effective and more likely to approach the complete cure for reflux esophagitis.

Objective To evaluate the efficacy of transarterial embolization(TAE) for intraperitoneal hemorrhage due to spontaneous rupture in hepato-cellular carcinoma(HCC).Methods 50 cases with ruptured HCC were divided into 4 groups according to the type of their previous treatment:group A,TAE followed by elective hepatectomy 12;Group B,TAE alone 12;Group C,emergency operation 13;Group D,medical conservative management.Results Celiac arterio-graphy done before the present treatment showed extravasation of contrast material in 6(25%) of the 24 patients in group A and B,and hypervascular tumor was observed in the rest.The hemostasis success rate of group A,B and C were 100%,which were much higher than that of group D(40%)(P

A new sesquiterpene hydroquinone (1) was isolated from a deep sea sediment derived fungus, Phialocephala sp.. Its structure and stereochemistry were established on the basis of spectroscopic data and optical rotation. This compound was tested for cytotoxicity against P388 (murine leukemia cell) and K562 (human leukemia cell) cell lines, and displayed strong cytotoxic effects with IC50 value of 0.16 and 0.05 micromol x L(-1), separately.

Objective To identify potential serum biomarkers specific for hepatocellular carcinoma (HCC).Methods Eighty-one patients wilh hepatitis B-related HCC and 80 healthy controls were randomly divided into a training set (48 HCC,47 controls) and a testing set (33 HCC,33 controls).Serum proteomic profiles were measured using surface-enhanced laser desorption/ionization time-offlight mass spectroscopy (SELDI-TOF-MS).A classification tree was established by the Biomarker Pattern Software.Candidate biomarkcrs were separated by HPLC and identified by MA1DI-MS/MS and database searching.Forty-eight patients with HCC,54 cirrhotic patients and 42 healthy subjects were clinically validated using candidate biomarkers by SELDI-Immunoassay.Real-time reverse transcriptase-polymerase chain reaction was performed to observe GRO-1 and Thrombin in 55 HCC tissues and 13 normal hepatolage tissues.Results Two up-regulated protein peaks were automatically chosen as a classification tree in the training set.These biomarkers were identified as thrombin light chain and CXC chemokines ligand 1 (GRO-1).The sensitivity and specificity of this classification tree were 89.6％.The multivariate model using the two biomarkers and alpha-fetoprotein (AFP) resulted in a sensitivity of 91.7％ and specificity of 92.7％,which was significantly better than AFP alone.The mRNA expression of GRO-1 and Thrombin were found in all HCC tissues.There were significant associations between GRO-1 gene expression and some clinical and pathological findings such as metastasis and recurrence (P＜0.05).Significant differences of 5-year survival rates wee observed among subgroups according to the expression of GRO-1 (P＜0.05).There were significant associations between Thrombin gene expression and some clinical and pathological findings such as recurrence and AFP (P＜0.05).Significant differences of 5-year survival rates were observed among the subgroups according to the expression of THROMBIN (P＜0.05).A positive correlation was found between GRO-1 and Thrombin (r=0.73,P＜0.01).Conclusion Thrombin light chain and GRO-1 are potential biomarkers of HCC.The expression of GRO-1 in HCC tissues was a valuable indicator in estimating metastasis and recurrence in HCC patients.

Objective To investigate the efficacy of laparoscopic hepatectomy for the treatment of hepatocellular carcinoma (HCC).Methods The clinical data of 30 HCC patients who were admitted to the Affiliated Cancer Hospital of Guangxi Medical University from January 2011 to December 2011 were retrospectively analyzed.All patients were divided into the laparoscopic hepatectomy (LH) group (10 patients) and open hepatectomy (OH) group (20 patients) according to the operation patterns and at the ratio of 1 ∶ 2.The degree of cirrhosis,size and location of tumor of the 2 groups were analyzed using the covariance analysis.The student t test was used for analysing the difference of the 2 groups.Results In the LH group,7 patients received laparoscopic nonanatomical liver resection,3 received anatomical resection of the left lateral lobe,no patient was converted to the hand assisted laparoscopic surgery or open surgery.In the OH group,14 patients received non-anatomical liver resection,and 6 received anatomical liver resection.The volume of blood loss of the LH group was (247 ± 235) ml,which was significantly lower than (408 ± 191)ml of the OH group (t =2.199,P ＜ 0.05).The mean postoperative fasting time,postoperative abdominal drainage time and duration of hospital stay of the LH group were (1.9 ±0.6) days,(3.2 ± 1.2) days and (8.9 ± 2.3) days,which were significantly shorter than (3.0 ± 1.6) days,(4.9±1.6)daysand (11.5±2.3)days of the OH group (t=2.149,2.917,2.921,P＜0.05).The levels of alanine aminotransferase (ALT) of the LH group at day 1,3,5 were (228 ± 100)U/L,(143 ± 51)U/L,(85 ±24) U/L,and the levels of aspartate aminotransferase (AST) of the LH group at day 1,3,5 were (196 ± 67)U/L,(90 ± 35) U/L,(46 ± 10) U/L.The levels of ALT of the OH group at day 1,3,5 were (557 ± 401) U/L,(414 ±397)U/L,(217 ± 199)U/L,and the levels of AST of the OH group at day 1,3,5 were (506 ±317)U/L,(178 ± 122) U/L,(71 ± 33) U/L.The time for hepatic function recovery of the LH group was significantly shorter than that of the OH group (t =3.675,3.001,2.073 ; 4.196,2.223,2.272,P ＜ 0.05).All the 30 patients were followed up for 3-15 months.The level of alpha fetoprotein of 1 patient in the LH group was increased at postoperative month 4,and the results of computed tomography showed multiple intrahepatic lesions.The patient was cured by intervention treatment.One patient of the OH group was diagnosed as with tumor recurrence at the resection margins and adjacent hepatic segments.The patient was cured by radiofrequency ablation,with no tumor recurrence.No tumor recurrence or metastasis was observed in the other patients.Conclusion Laparoscopic hepatectomy is a feasible,safe and minimally invasive approach for patients with HCC.

Objective:The effect of antiviral therapy for hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC) after radical hepatectomy was assessed. Methods:A total of 478 HBV-HCC patients treated by radical hepatectomy were retrospectively col-lected. Patients in the treatment group (n=141) received postoperative lamivudine therapy (100 mg/d), whereas patients in the control group (n=337) did not. Recurrence-free survival rates, overall survival rates, treatments for recurrent HCC and cause of death were com-pared between the two groups. Propensity score matching was also conducted to reduce confounding bias between the groups. Results:The one-, three-, and five-year recurrence-free survival rates didn't significantly differ between the two groups (P=0.778);however, the one-, three-, and five-year overall survival rates in the treatment group were significantly higher than those in the control group (P=0.002). Similar results were observed in the matched data. Subgroup analysis showed that antiviral treatment conferred a significant sur-vival benefit for Barcelona Clinical Liver Cancer stage A/B patients. Following HCC recurrence, more people in the treatment group were able to choose curative treatments than those in the control group (P=0.031). For cause of death, fewer people in the treatment group died of liver failure than those in the control group (P=0.041). Conclusion:Postoperative antiviral therapy increases chances of receiving curative treatments for recurrent HCC and prevents death because of liver failure, thereby significantly prolonging overall sur-vival, especially in early-or intermedian-stage tumors.

Objective To investigate the relationship between the trauma severity and the usage of antibacterial drugs and to provide reference for standard protocol of proper antibiotic use in wound care.Methods ICD-10 and AIS were used to set up the relationship and to analyze the use of antibiotics in patients with different trauma score.Results 25 035 trauma patients were enrolled in this study.Those patients were divided into five groups according to the AIS score with least severe as group 1 to most severe as group 5.The patient percentage in group 1 to 5 was 21.92％,67.73％,8.86％,0.97％ and 0.52％ respectively.The five most frequently used antibiotic classes are second generation cephalosporins,third generation cephalosporins,first generation cephalosporins,fluoroquinolones and penicillin/beta lactamase inhibitor combination, accounted for 29.69％,22.57％,20.33％,4.66％ and 4.47％ of total DDDs of antibacterial drugs.Individually, the top 10 antibiotics are cefuroxime (12.21％), cefazolin (8.31％), ceftriaxone (7.74％), cefathiamidine (7.34％), cefotiam (4.87％), ceftazidime (3.68％), amoxicillin/clavulanic acid (3.63％), levofloxacin (3.59％), cefoxitin (3.56％), flucloxacillin (3.52％);gentamicin (2.27％), ornidazole (2.00％) and cefoperazone/tazobactam (1.44％) were used most in their categories respectively.The variety and quantity of antibacterial drugs used for different trauma patients were different.Conclusion The trauma score based on ICD-AIS can reflect the severity of trauma.The use of antibiotics in patients with different trauma score can provide reference for the clinical applications of antibiotics in wound care.

Objective:To clarify the anti-inflammatory effects and anti-endoplasmic reticulum stress effects of resolvin D2 (RvD2) in viral myocarditis mice and to explore its possible mechanism.Methods:Fifty male BALB/c mice were collected and assigned corresponding numbers. Then 40 male BALB/c mice were selected randomly with 10 mice in each group. They were set as normal control group, RvD2 control group, viral myocarditis group and RvD2 treatment group. Afterwards, mice in the RvD2 control group received continuous intraperitoneal injection of RvD2 for 7 days, while mice in the viral myocarditis group received intraperitoneal injection of Coxsackievirus B3 virus (CVB3) in the purpose of constructing an animal model of viral myocarditis. Then, mice in the RvD2 treatment group were given continuous intraperitoneal injection of RvD2 for 7 days. After these 7 days, the mice of each group were sacrificed and their cardiac tissue and serum samples were taken. The expression levels of serum inflammatory factors including IL-1β and TNF-α were detected by ELISA in each group of mice, and HE staining were used to detect the inflammatory cell infiltration in myocardial tissue of each group. Meanwhile, the expression levels of inflammation-related proteins IL-1β, TNF-α as well as endoplasmic reticulum stress-related proteins like GRP78 and Chop in the myocardial tissue in each group of mice were detected by Western blot experiment. The remaining 10 BALB/c mice were treated with intraperitoneal injection of RvD2 as well as GPR18 protein inhibitors after constructing the animal model of viral myocarditis mentioned above. In the end, the expression levels of GPR18 protein, inflammation-related proteins including IL-1β and TNF-α as well as endoplasmic reticulum stress-related proteins like GRP78 and Chop in the myocardial tissue of each group were detected by Western blot experiments.Results:Compared with the normal control group, the expression levels of inflammatory factors IL-1β and TNF-α in the serum of mice with viral myocarditis were significantly increased, and the degree of infiltration of inflammatory cells in myocardial tissue was also significantly increased. Besides, the expression levels of the inflammation-related proteins IL-1β, TNF-α as well as endoplasmic reticulum stress-related proteins including GRP78 and Chop increased largely. While compared with the viral myocarditis group, the expression levels of serum inflammatory factors IL-1β and TNF-α in the mice of the RvD2 treatment group were significantly reduced and the degree of infiltration of inflammatory cells in the cardiac tissue was significantly reduced. Also, the expression levels of inflammation-related proteins IL-1β and TNF-α as well as endoplasmic reticulum stress-related proteins GRP78 and Chop were significantly reduced. After intraperitoneal injection of RvD2 and GPR18 inhibitor, in the mice treated with viral myocarditis, the expression levels of IL-1β, TNF-α and endoplasmic reticulum stress-related proteins like GRP78 and Chop in myocardial tissue of these mice significantly increased when it came to compare with the RvD2 treatment group, while the expression levels of GPR18 protein were significantly reduced.Conclusions:RvD2 can inhibit the inflammatory response and endoplasmic reticulum stress injury in mice with viral myocarditis by binding to the membrane protein receptor GPR18, thus exerting a protective effect on heart.

Objective:To investigate the predictive value of F-2-fluoro-2-deoxy-D-glucose ( 18F-FDG) PET-CT metabolic parameters for the recurrence of type 1 autoimmune pancreatitis (AIP). Methods:Eighty-six patients with type 1 AIP who met the International Consensus Diagnostic Criteria (ICDC) and underwent 18F-FDG PET-CT before interventional treatment at the PLA General Hospital between May 2009 and June 2021 were included and divided into recurrence group ( n=43) and no-recurrence group ( n=43) according to whether they recurred after treatment. The standard uptake value (SUV)≥2.5 fixed threshold was used to outline the pancreatic lesion volume of interest (VOI) in three dimensions, and the three-dimensional diameter of the lesion, maximum standardized uptake value (SUVmax), mean standardized uptake value (SUVmean), peak standardized uptake value (SUVpeak), metabolic tumor volume (MTV), total lesion glycolysis (TLG), target-to-bench ratio (TBR) and standardized uptake value ratio (SUVR) were measured to compare the clinical characteristics, biochemical indices and treatment of the two groups; univariate and multifactorial regression analysis were used to examine 18F-FDG PET/CT visual indices of pancreatic lesions and extra-pancreatic involved organs as well as metabolic parameters in the two groups. A recurrence prediction model was constructed and its predictive efficacy was assessed. Results:The proportion of patients receiving glucocorticoid maintenance therapy was significantly higher in the no-recurrence group than in the recurrence group (58% vs 23.3%), and the serum IgG4 levels before treatment were significantly higher in the recurrence group [(15 309±11 724) mg/L vs (8 816±7 169) mg/L]. The results of univariate analysis showed that the proportion of extra-pancreatic salivary gland involvement and VOI, SUVmax, SUVpeak, SUVR, TBR, MTV, and TLG were significantly higher in the recurrence group than in the no-recurrence group, and the differences were statistically significant (all P values <0.05); the results of multivariate analysis showed that VOI ( OR=1.012, 95% CI 1.001-1.023 ), SUV max ( OR=1.398, 95% CI 1.029-1.899), SUV peak ( OR=1.408, 95% CI1.002-1.978), SUVR ( OR=1.977, 95% CI1.036-3.771) and MTV ( OR=1.012, 95% CI1.000- 1.022) in the recurrence group were significantly higher than those in the no-recurrence group, and all differences were statistically significant (all P values <0.05). The prediction model was constructed by multifactorial binary logistic regression analysis of SUVR>2, MTV>36 cm 3, and IgG4>11 400 mg/L, which had an AUC of 0.800 (95% CI 0.704-0.897), sensitivity of 81.4% (95% CI 0.661-0.911), specificity of 74.4% (95% CI 0.585-0.860), and prediction accuracy of 77.9%. Conclusions:18F-FDG PET/CT metabolic parameters can be used as predictors of type 1 AIP recurrence; a multiparameter model constructed based on metabolic parameters SUVR, MTV and IgG4 has a good predictive efficacy for predicting type 1 AIP recurrence.