Objective To study the expression of SARS-associated coronavirus nucleocapsid(N) gene in Pichia pastoris and to obtain recombinant N protein with good biological activity.Methods The gene encoding the full N protein of SARS-CoV was amplified by PCR and cloned into Pichia pastoris expression vector pPICZA.The recombinant expression plasmid pPICZA/N was transformed into X-33,KM71H and GS115. The positive insert transformants were screened,cultured and induced by methanol.The recombinant protein was further purified with Ni affinity chromatography.Antigen activity was detected with anti-N monoclonal antibody,polyclonal antibody and sera from SRAS patients.Results SDS-PAGE and immunological analysis demonstrated that only Pichia pastoris transformants KM71H/pPICZA/N and X-33/pPICZA/N expressed Mr 70 000 fusion protein with special antigenicity.Conclusion SARS-CoV N protein expression in Pichia pastoris has been achieved,establishing the basis for further study of biological and immunological function of N antigen.

Objective:To explore improving effect of Danqi soft capsule on hemorheology in patients with coronary heart disease (CHD) and its myocardial protection effect .Methods:A total of 84 CHD patients treated in our hos‐pital from Dec 2013 to Dec 2014 were enrolled .They were randomly divided into routine treatment group (n=42) and combined treatment group (n=42 ,received Danqi soft capsule therapy based on routine treatment group ) .He‐morheological indexes ,ECG and inflammatory factor levels [C reactive protein (CRP) ,tumor necrosis factor α(TNF‐α)] were measured and compared between two groups before and after treatment .Results:Compared with before treatment , above hemorheological indexes significantly reduced in both groups after treatment ( P< 0.05 all) ,compared with routine treatment group ,there were significant reductions in high shear whole blood viscosity [ (5.12 ± 0.73) mPa/s vs .(4.47 ± 0.86) mPa/s] ,low shear whole blood viscosity [ (7.36 ± 1.32) mPa/s vs .(6.21 ± 1.03) mPa/s] ,plasma viscosity [ (1.47 ± 0.31) mPa/s vs .(1.31 ± 0.25) mPa/s] ,erythrocyte aggregation index [ (3.53 ± 0.45) vs .(2.93 ± 0.26)] and fibrinogen level [ (2.95 ± 0.28) g/L vs .(2.08 ± 0.24) g/L] in combined treatment group , P< 0.05 all .Total effective rate on ECG in combined treatment group was significantly higher than that of routine treatment group (85.71% vs .57.14% ,P<0.05) .Compared with before treatment ,CRP and TNF‐αlevels significantly reduced in both groups after treatment ( P<0.05 all) ,compared with routine treatment group ,there were significant reductions in levels of CRP [ (6.52 ± 1.61) mg/L vs .(5.18 ± 1.25) mg/L] and TNF‐α [ (283.28 ± 18.28) pg/ml vs .(245.08 ± 12.24) pg/ml] in combined treatment group , P<0.05 all .Conclusion:Danqi soft capsule combined routine treatment can significantly improve hemorheology and reduce related inflamma‐tory factor levels ,possess myocardial protection effect in CHD patients ,which is worth extending .

Communicable Diseases ; Disease Outbreaks ; Humans ; Infection Control ; Science

Long non-coding RNAs ( lncRNAs) are a class of RNA molecules which are unable to codify proteins. They express abnormally in tumor cells including prostate cancer cells and play a significant role in development of tumor. Some lncRNAs have been proven to affect physiological processes of prostate cells and act as tumor suppressor or activator and could be regulated through several methods. Thus, lncRNAs have the potential to be therapeutic targets of prostate cancer. This review introduces expressed abnormally ln-cRNAs in prostate cancer and their functions and mechanisms in prostate cancer.

Objective To evaluate the difference between gallbladder polys,gallbladder adenomas and gallbladder cancer by sonography.Methods The imaging features were analysed including 571 patients with gallbladder polys,30 with gallbladder adenomas,109 with gallbladder cancer.Results The lesion diameter,echogram,color signals,maximum velocity(Vmax) and the resistive index(RI) were difference between Polys,Adenomas and cancers of gallbladder.When RI withinlesions lower than 0.65 was adopted as diagnostic criteria of gallbladder cancer,the specificity of the ultra-sound in diagnosis of gallbladder cancer were respectively.Conclusion Color Doppler flow imaging was useful in the differential diagnosis of gallbladder polypoid lesions in combination with gray-scale sonography.

Objective In order to explore the mechanism of repetitive transcranial magnetic stimulation rTMS) on neuropathic pain,we observed the effect of different frequencies of rTMS on neuropathic pain and the expression of neuronal nitric oxide synthase (nNOS) in the dorsal root ganglion (DRG).Methods A total of 28 male Sprague-Dawley rats were used and divided into a control group,in which sham-operation was performed,and an experimental group which was further divided into a sham-rTMS group,a 1 Hz group and a 20 Hz group after successful neuropathic pain model was established by operation to ligate the left sciatic nerves,with 7 rats in each group.Three days after the operation,rTMS was applied to the primary motor cortex (M1) contralateral to the pain once dai ly for 10 consecutive days.The pain behavior and nNOS expression in the DRG were measured before and after 10 days of rTMS intervention.Results All the neuropathic pain model rats demonstrated pain-related behaviors 3 days postoperation,the mechanical pain thresholds were significantly lower than those in the control group (P ＜ 0.05).After rTMS treatment,the mechanical hyperalgsia was significantly relieved in 20 Hz group but not 1 Hz group as demonstrated by a comparison with the sham-rTMS group (P ＜ 0.05).The expression of nNOS in DRG ipsilateral to the neuropathic pain was significantly increased in sham-rTMS group and 1 Hz group (P ＜ 0.05) when compared with the control group.Meanwhile,it was shown that expression of nNOS was down-regulated in 20 Hz group but not 1 Hz group (P ＜ 0.05).The degree of pain relief in 20 Hz group was negatively correlated with the expression of nNOS in DRG (P ＜0.05).Conclusions Neuropathic pain induced by peripheral nerve injury is associated with elevated expression of nNOS in the DRG.High-frequency rTMS can relieve neuropathic pain through down-regulating the overexpression of nNOS in the DRG,but the low-frequency rTMS has no such effect.

Objective To explore the decision-making processing changes of patients with cerebral infarction in different regions.Methods The patients with cerebral infarction were divided into 21 cases of frontal lobe infarction,11 cases of temporal lobe infarction,19 cases of the medial temporal lobe infarction,25 cases of basal ganglia infarction;25 cases of the anterior infarction,51 cases of the posterior infarction,62 cases of depression,64 cases of anxiety ;and there were 125 cases in normal control group.All subjects completed the test of the six kinds of choice situational problems,and used MMSE to evaluate cognitive function,the Hamilton Depression and anxiety Scale Evaluation to evaluate emotion.Results All cerebral infarction patients (CI group) and normal control group in low-risk and no-risk of loss situation(choice scenario 2),high-risk and the no-risk of gain or loss situation(choice scenario 3 and 4),high-risk and low-risk of gain or loss situation(choice scenario 5 and 6) tended to choose conservative scheme,and the selection probability of conservative scheme were obviously higher than that of the normal group,and the differences were statistically significant (P ＜ 0.05).In choice scenario 3,the basal ganglia infarction group with frontal lobe infarction group,the medial temporal lobe infarction group comparison,the conservative income scheme selection probability increased significantly,all difference were statistically significant (P ＜ 0.01,P ＜ 0.05).In choice scenario 5 of the posterior infarction group,a higher probability of conservative income scheme was selected than the anterior infarction,and the difference was statistically significant (P ＜0.05).Accompanied with depression and anxiety,the basal ganglia infarction tended to select more conservative income program than the frontal lobe infarction group and the medial temporal lobe infarction group in choice scenario 3,and the program infarction group selected a higher probability comparative differences were statistically significant (P＜ 0.01,P＜ 0.05).The posterior infarction group selected a higher probability of conservative income scheme than the anterior infarction in choice scenario 5,and the difference was statistically significant (P ＜ 0.05).Conclusion Cerebral infarction in patients exist decision-making processing abnormally,and perform as income conservative and loss risk averse.Whether associated with depression,anxiety,the basal ganglia infarction and posterior cerebral infarction patients are inclined to income conservative.

Objective To study the nursing methods of gastrointestinal cancer patients undergoing continuous hyperthermic peritoneal peffusion chemotherapy (CHPPC) in the peri-operative period.Methods A total of 126 patients with gastrointestinal cancer underwent continuous hyperthermic peritoneal perfusion chemotherapy,and nursing care was implemented continuously,comprehensively and individually.Results All of the patients underwent continuous hyperthermic peritoneal perfusion chemotherapy successfully,without any complication occurred.Conclusions Intensive and effective nursing care is helpful to carry out continuous hyperthermic peritoneal perfusion chemotherapy safely,and avoid the complications.

Objective To explore the technique of laparoscopic reoperation in the treatment of common bile duct stones.Methods A retrospective analysis of the clinical data of 54 cases of common bile duct stones undergoing laparoscopic common bile duct stone surgery in our hospital from January 2011 to December 2015 was conducted.Through the choice of puncture hole, the exposure of the liver surface and the confirmation of the common bile duct, T-tube drainage and primary suture of common bile duct were carried out for the treatment of bile duct stone.Results The laparoscopic operations were successful in 52 cases, while conversions to open surgery were required in 2 cases.During the operation, the amount of bleeding was about 40-150 ml (average, 70 ml), the operation time was 75-180 min (average, 120 min), and the postoperative gastrointestinal function recovery time was 24-48 h (average, 27±13 h).There were 1 case of duodenal perforation injury, 2 cases of bile leakage, and 2 cases of residual stones after operation, which were cured with laparoscopic repair, prolonged drainage time, and choledochoscope treatment via abdominal sinus.Postoperative hospital stay was 6-9 d (average, 7±1.5 d).A total of 54 cases were followed up for 3-24 months (mean, 14.8 months).All the patients recovered well, without bile duct stricture or stone recurrence.Conclusion As long as the application of skilled laparoscopic surgery methods and separation of surgical area skills, laparoscopic bile duct surgery for the treatment of common bile duct stones is safe and feasible.

Objective To investigate the value of multi-slice spiral CT(MSCT)in diagnosis of the causes of intestinal obstruction.Methods 49 cases of intestinal obstruction confirmed by surgery or clinical diagnosis underwent abdominal MSCT plain and enhanced scanning,three-dimensional post-processing reconstruction was done in 5 cases.CT features were analysed blindly by two senior radiologists,including the thickness,density and degree of enhancement of intestinal walls at the "transition zone" area of intestine and surrounding mesenteric structure.The causes of intestinal obstruction were analysed in combination with clinical history of the patients.Results The causes of intestinal obstruction were suggested by MSCT in 46 cases(94%),including intestinal adhesion in 13 cases,tumor in 11,hernia in 4,ischemic bowel disease in 4,gallstone in 2,gastrolith in 2,Bezoar in 4.paralytic ileus in 3 and appendiceal abscess in 3.Three cases were misdiagnosed.Conclusion MSCT is of significant clinical value in diagnosis of intestinal obstruction,which should be used as the first means in clinic practice.