Objective To analyse and summarize the MRI characteristics of tumor‐like inflammatory demyelinating diseases (TIDD) .Methods MRI findings of 10 cases with pathologically proved TIDD were analyzed retrospectively ,all patients received plain and enhanced MRI scan .Results 3 cases showed multiple lesions in bilateral frontal and parietal lobes ,and 7 cases showed soli‐tary mass ,in which 2 lesions located in the occipital lobe ,2 in the basal ganglia ,2 in the second to fifth segment of cervical cord ,and 1 lesion located in the left frontal parietal lobe .The shape of 7 lesions were irregular ,2 were stripped ,while 1 lesion was oval .6 cases had clear boundary ,while 4 showed ambiguous .Solitary lesions were 1 .7 cm -5 .6 cm in diameter(mean 4 .0 cm ± 1 .48 cm) .8 cases manifested mild edema while 2 had no edema .On MRI plain scan ,lesions were hypointensity on T1WI and hyperintensity on T2WI in 8 cases ,isointensity on T1 WI and hyperintensity on T2 WI in 2 cases ,and all lesions were hyperintensity on FLAIR sequence .DWI were performed in 3 cases ,all lesions showed hyperintensity ,2 of them had patchy hypointensity signal .Hemorrhage was detected in 3 lesions ,cystic lesions or calcification were not found in all cases .On post‐contrast scan ,3 lesions showed ring like enhancement ,2 showed obviously heterogeneous enhancement ,2 had mild enhancement and 2 cases had no enhancement ,1 presented with open ring like enhancement .Conclusion TIDD shows some specific MRI features ,and MRI is helpful to the diagnosis of TIDD .

Objective To present a miniaturized nucleic acid amplification system for spot rapid detection .Methods A miniaturized nucleic acid amplification system with structured packed porous media of particles to uniform the air temperature was designed according to the working principle and heat transfer characteristics of an air -heated nucleic acid amplification system.Thermodynamic simulation and temperature cycling test were carried on to verify the feasibility of the system.Results The structured packed porous media of particles worked well in uniforming the air temperature of the system and the temperature uniformity could reach 0.8℃.The miniaturized nucleic acid amplification system with a volume parameter of 80 mm ×40 mm ×20 mm(length ×height ×width)was portable.The average rate of heating was 10℃/s while the average rate of cooling was 5℃/s.Compared with standard PCR instrument , the miniaturized nucleic acid amplification system performed well in the process of amplification and met the requirements of preliminary design .Conclusion The miniaturized nucleic acid amplification system with a rapid reaction velocity and portable volume could be applied to nucleic acid detection of unknown samples on the spot .

Objective To explore the relationship between the spot size and the result of ploidy analysis in the detection technology based on single-particles, and to fix the scope of spot thickness on the basis of the experimental result.Methods The influence of spot thickness on voltage signals produced by single cells was analyzed.The parameters of the beam shap system in the incident field were designed and optimized on ZEMAX.Finally, according to the cells′diameter, the target size of spots was set.A set of spots of different thickness and of Gaussian distribution obtained from the optical experimental platform was used to conduct ploidy detection experiments.Results Target spots were both obtained from ZEMAX simulation and the optical platform.When the spot thickness was larger than both monocytes and coenocytes, the mean fluorescence intensity ratio was 2.03,which met the demand of the index.Conclusion When the height of the pulse is used to represent the fluorescence density, the relative size of spots and cells will affect the result of ploidy detection.Only when spot thickness is larger than cells is the ploidy ratio accurate.

Objective To screen proteins from human pancreas cDNA library,which interact with hepatitis C virus(HCV)E1 protein.Methods The human pancreas cDNA library was amplified,purified and evaluated,and then the purified library plasmids were transformed into yeast strain Y187.The reconstructed plasmid pGBKT7-E1 was transformed into yeast strain AH109 and screened on the nutrient deficiency medium SD/-Trp.The transformed AH109 mated with Y187 that contained the library plasmids.The diploid yeast cells were plated on nutrient deficiency medium SD/-Trp/-Leu/-His/-Ade and SD/-Trp/-Leu/-His/-Ade containing X-α-gal for selecting.The plasmids in diploid yeast cells were extracted and electrotransformed into E.coli DH5α.The plasmids in DH5α were extracted,sequenced and blasted.Result Sixteen proteins interacting with HCV E1 were found.Conclusion Some of the sixteen pancreatic proteins may be related with metabolisms of glucose and lipid.

Objective To explore the significance of combined detection of D-Dimer,cardic troponin I(cTnI)and N-terminal pro-brain natriuretic peptide(NT-ProBNP)in acute coronary syndrome and the correlation between them.Methods 143 patients with acute coronary syndrome were selected as the observation group,and 40 CAG negative people as the control group.The difference between the two groups was compared and the correlation was analyzed.According to different diagnostics,patients in the observa-tion group were separated into 3 groups,unstable angina pectoris,non ST segment elevation myocardial infarction and ST segment elevation myocardial infarction.The correlation of D-Dimer,cTnI and NT-ProBNP with the severity of coronary artery disease was analyzed.Results The levels of D-Dimer,cTnI and NT-ProBNP in the observation group were higher than those in the control group,and the difference was statistically significant(P < 0.05 ).The severity of coronary artery disease had positive correlation with the test results (P <0.05).Conclusion The combined detection of D-Dimer,cTnI and NT-ProBNP could help to diagnose the acute coronary syndrome and the test result has a positive correlation with the severity of acute coronary syndrome.

Objective: To systemically review the safety and efficacy of Absorb bioresorbable vascular scaffold (Absorb BVS) versus cobalt chromium-everolimus eluting stent (CoCr-EES) for treating the patients with coronary artery disease (CAD) by percutaneous coronary intervention (PCI).
Methods: We searched relevant literatures in PubMed, Embase, Cochrane Library, CNKI and Wanfang database from 2008-01 to 2015-10, meanwhile, collected published data and randomized controlled trials from meeting abstracts and websites to compare Absorb BVS and CoCr-EES for treating CAD patients. The quality of literatures were assessed and extracted by modiifed Jadad score, Meta-analysis was conducted by STATA 12.0 soft ware.
Results: There were 4 eligible trials with 3,389 patients were enrolled. Absorb BVS group, n=2,164 and CoCr-EES group, n=1,225. During the mean of 1.1 years follow-up period, the following incidences were similar between 2 groups:target lesion failure (OR=1.29, 95%CI 0.95-1.74, P=0.10), all cause death (OR=1.31, 95%CI 0.60-2.87, P=0.50), cardiac death (OR=1.38, 95%CI 0.45-4.24, P=0.57), myocardial infarction (OR=1.30, 95%CI 0.93-1.80, P=0.12), deifnite or probable stent thrombosis (OR=2.08, 95%CI 0.95-4.54, P=0.07), re-vascularization (OR=1.03, 95%CI 0.80-1.33, P=0.81), target lesion re-vascularization (OR=1.06, 95%CI 0.67-1.66, P=0.81) and the patient-oriented composite endpoint (OR=0.95, 95%CI 0.66-1.35, P=0.76).
Conclusion: Absorb BVS and CoCr-EES had the similar safety and efifcacy for treating the low and moderate risk CAD patients who had angina, ischemia while without symptoms. The longer period of follow-up study and larger randomized, controlled clinical trials were needed for Absorb BVS application in clinical practice.

Objective To present a new algorithm of real-time peak detection for pulse signals based on FPGA , which is known as the dynamic threshold with half peak detection method ( DT-HP ) .Methods With Gaussian-shaped pulse signals as the target , the method was improved from conventional methods .The FPGA detection process of the algorithm required no more than three detection parameters: the starting point , the maximum value and the pulse width .Results The algorithm solved the floating baseline and repeating detection that occur in traditional methods .Compared with the results of polynomial fitting method and flow cytometry , the difference was only 3.2% and 9.3%.Conclusion The algorithm takes less time ,RAM, and cache while allowing floating baseline detection , which can be used as an effective method for rapid detection in FPGA .

Objective To investigate the effect of metoprolol and metoprolol combined with moderate inten-sity aerobic exercise on the sympathetic vasoconstriction response of skeletal muscle, functional sympatholysis and the exercise capacity of hypertensive men. Methods Thirty men with mild ( stage 1) essential hypertension were divi-ded into a drug group and an observation group. The drug group received only metoprolol while the observation group took metoprolol and performed aerobic exercise (intensity 50-70％ of VO2max, 30-45 min/time, 3-5 times/week) for 12 weeks. Before and after the experiment, the subjects' maximum oxygen uptake (VO2max), peak power (PP) as well as a rating of perceived exertion ( RPE) curve during exercise were determined using the graded exercise test. Forearm vascular conductance ( FVC) induced by the cold pressor test was measured using Doppler ultrasound at rest and during a handgrip exercise. Sympathetic vasoconstriction response was manifested by the rate of change in the conductance (％FVC) before and after the cold pressor test. Functional sympatholysis ( the ability of muscle contrac-tions to inhibit sympathetic vasoconstrictor response) was quantified using the difference in the ％FVC values (△％FVC) between the handgrip exercise and at rest. Results After the treatment,％FVC during the handgrip exercise was lower than at rest in the observation group.△％FVC had increased significantly, as had VO2max and PP. The RPE curve during a graded exercise test shifted to the right in the observation group, but there was no significant change in the other observations. In the drug group, PP had decreased significantly and the RPE curve had shifted to the left. Conclusion Metoprolol can better improve functional sympatholysis and enhance exercise capacity when it is com-bined with moderate intensity aerobic exercise. That will alleviate any exercise intolerance in men with mild hyperten-sion caused by taking metoprolol alone.

Objective To investigate the clinical efficacy and prognostic factors of radical hepatectomy of hepatocellular carcinoma (HCC).Methods The retrospective case-control study was conducted.The clinicopathological data of 760 HCC patients who were admitted to the First Affiliated Hospital of Nanjing Medical University from August 2003 to June 2015 were collected.Surgical procedures were determined according to the location,number and size of tumors and anatomical relations among vessels.Observation indicators included:(1)intra-and post-operative situations:surgical procedures,operation time,volume of intraoperative blood loss,cases of intraoperative blood transfusion,postoperative complications,duration of postoperative hospital stay and pathological examination;(2) follow-up:1-,3-,5-year overall and tumor-free survival situations;(3) prognostic factors analysis of HCC patients.Follow-up using outpatient examination and telephone interview was performed to detect patients' survival up to January 2016.Measurement data with normal distribution were represented as-x±s.The survival curve and survival rate were respectively drawn and calculated by the Kaplan-Meier method.The univariate analysis and multivariate analysis were done using the COX regression model.Results (1) Intra-and post-operative situations:all the 760 patients underwent successful operations,including 419 undergoing anatomical hepatectomy and 341 undergoing non-anatomical hepatectomy.R0 and R1 resections were respectively applied to 742 and 18 patients.Two patients were combined with portal vein resection and reconstruction and 1 was combined with resection and reconstruction of inferior vena cava.Operation time,volume of intraoperative blood loss and cases of intraoperative blood transfusion were (226± 115) minutes,(714±706) mL and 88,respectively.Fifty-five patients had postoperative complications,including 20 with abdominal effusion or abscess,16 with pleural effusion,9 with recurrent fever,8 with incisional infection,7 with intra-abdominal hemorrhage,6 with liver failure,3 with pyloric or intestinal obstruction and 2 with renal failure (some patients with multiple complications).Of the 55 patients with postoperative complications,7 with hemorrhage underwent reoperation or interventional therapy and other patients underwent conventional symptomatic treatment.Of 55 patients,5 patients died and other 50 patients were improved.Duration of postoperative hospital stay was (14±6) days.There were 457 patients with minimum margin of tumors ≤ 1.0 cm and 303 with minimum margin of tumors ＞ 1.0 cm.(2) Followup:all the 760 patients were followed up for 1-139 months,with a median time of 25 months.The overall and tumor-free median survival times were 59 months and 31 months,respectively.The 1-,3-,5-year overall and tumor-free survival rates were 81.7％,63.4％,47.9％ and 68.7％,44.9％,29.6％,respectively.(3) Prognostic factors analysis of HCC patients:results of univariate analysis showed that clinical symptoms,alpha-fetoprotein (AFP),Barcelona clinic liver cancer staging,surgical procedures,intraoperative blood transfusion,minimum margin of tumors,number and diameter of tumors,tumor capsule,tumor differentiation,vascular cancer embolus,macrovascular invasion and tumor staging of American Joint Committee on Cancer (AJCC) were related factors affecting prognosis of HCC patients after radical hepatectomy [HR =1.39,1.50,1.92,0.65,1.45,1.68,1.96,1.66,2.26,1.50,2.68,3.37,2.00,95％ confidence interval (CI):1.08-1.79,1.16-1.94,1.68-2.20,0.50-0.84,1.04-2.02,1.28-2.20,1.54-2.49,1.42-1.94,1.69-3.02,1.22-1.85,1.99-3.60,2.61-4.36,1.77-2.27,P＜0.05].Results of multivariate analysis showed that AFP,number and diameter of tumors,tumor differentiation and tumor staging of AJCC were independent factors affecting prognosis of HCC patients after radical hepatectomy (HR=1.61,1.62,1.31,1.40,1.78,95％CI:1.14-2.26,1.22-2.14,1.06-1.63,1.10-1.79,1.27-2.51,P ＜ 0.05).Conclusions The anatomical and non-anatomical hepatectomies are safe and feasible for optional HCC patients,with a good long-term outcome.AFP,number and diameter of tumors,tumor differentiation and tumor staging of AJCC are independent factors affecting prognosis of HCC patients after radical hepatectomy.

OBJECTIVE:To determine the median effective dose (ED50) of propofol with single intravenous injection in alcohol dependence or withdrawal model rats,and to observe the anaesthetic effect of 2-fold ED50 propofol. METHODS:Fifty SD rats were divided into drinking group(n＝23)and control group(n＝27)based on whether the consumption of alcohol was greater than 3.0 g/(kg·d). Drinking group continued to drink freely and intermittently to establish alcohol dependence model. Control group was only given drinking water for ethanol elution 16 rats were randomly selected from each group to determine ED50 of propofol with single intravenous injection by sequential method,and initial dose was 6.02 mg/kg. After eluting for a week,alcohol dependence rats stopped drinking for 24 hours and had alcohol withdrawal symptoms to establish alcohol withdrawal model. ED50 of propofol in alcohol withdrawal group and control group were determined with same method. After eluting for a week,anaesthetic effect [disappearance time and reappearance time of forepaw righting reflex(FRR),time of activity complete recovery] of 2-fold ED50 propofol with single intravenous injection were observed in alcohol dependence group,alcohol withdrawal group and control group,and corresponding time point and the frequency of respiration before administration were also observed. Changes of liver function indexes(serum albumin,alanine transaminase,total bilirubin,γ glutamyl transaminopeptidase)and liver histomorphology were observed 48 h after medication,10 in each group. RESULTS:ED50 of propofol in alcohol dependence model rats was 9.563 mg/kg,which was higher than 5.623 mg/kg of control group. ED50 of propofol in alcohol withdrawal model rats was 4.086 mg/kg,which was lower than 5.297 mg/kg of control group. Compared with control group,reappearance time of FRR was prolonged significantly in alcohol dependence group and alcohol withdrawal group (P＜0.05). There was no statistical significance in disappearance time of FRR or activity complete recovery time (P＞0.05). The frequency of respiration during FRR disappearance was lower than before propofol injection,FRR reappearance and activity complete recovery (P＜0.01). After intravenous injection of 2-fold ED50 propofol,reappearance time of FRR in alcohol dependence group and alcohol withdrawal group were longer than control group(P＜0.05)；the alcohol dependence group was longer than the alcohol withdrawal group(P＜0.05).The time of activity complete recovery in alcohol dependence group was longer than control group and alcohol withdrawal group (P＜0.05). The frequency of respiration in 3 groups during FRR disappearance were all lower than before propofol injection,FRR reappearance and activity complete recovery(P＜0.01). There was no significant difference in the change of liver function indexes or liver histomorphology. CONCLUSIONS:ED50 of propofol is increased in alcohol dependence rats,while ED50 of propofol is decreased in alcohol withdrawal rats. 2-fold ED50 of propofol has no significant toxicity to liver function.