Objective To explore the prognostic value of long-time EEG monitoring and the clinical examination index in comatose patients.Methods The long-time EEG monitoring and the modified Glasgow coma scale were done in 26 comatose patients(15 patients were male;11 patients were female;17—40 years old)in acute phase.The complexity of cerebral hemisphere was analyzed by computer.The patients were followed-up for 2 months and evaluated by Glasgow outcome scale.The correlation between the long-time EEG monitoring,clinical examination index and the prognosis of the patients was analyzed.The time- variation of hemisphere complexity and the relationship between prognosis and entropy were observed. Results The specificity(77.8%)and accuracy rate(92.3%)of long-time EEG monitoring in predicting the outcome of the acute comatose patients were higher than those of clinical examination.The EEG index appeared more closed-up with prognosis than clinical examination.The correlation coefficient between the EEG index and the modified Glasgow prognosis scoring was r=0.81(P

Aim To establish a novel locomotor model based on accumulate peripheral active time percent(APATP)in ICR mice induced by pentobarbital sodium(PB)and diazepam.Methods Total distance, accumulate peripheral active time and accumulate peripheral time were aquired from video tracking system with computer, and APATP in all groups was fit and got correspondent parameters with Drugs Analysis System 2.0. Logarithm of area under the curve(lgAUC_(0-60)), minimum APATP(lgP_(min)), and half time of steady-state locomotor activity(T_(1/2α)) were ready for evaluation.Results APATP decreased with time increasing in all groups gradually, and PB 10 mg·kg~(-1) and PB 15 mg·kg~(-1) had similar tendency.PB 10 mg·kg~(-1) and PB 15 mg·kg~(-1) all decreased APATP significantly throughout the time course.APATP in all mice was fit to kinetics equation.Compared with norm group, PB 5 mg·kg~(-1) decreased three parameters slightly(all P >0.05), and PB 10 mg·kg~(-1) and PB 15 mg·kg~(-1) had similar tendency.PB 10 mg·kg~(-1) (all P <0.05) and PB 15 mg·kg~(-1) (P <0.01, P <0.01 and P >0.05)decreased parameters.Compared with PB 10 mg·kg~(-1) , PB 15 mg·kg~(-1) increased reversely(P >0.05, P <0.05 and P <0.05).lgAUC_(0-60) and lgPmin were both linar with total distance(r 2=1.0000 and r 2=0.9995, both P <0.01), T_(1/2α) also showed similar tendcency as well as total distance.Refering PB 10 mg·kg~(-1) as positive drugs and norm as negative control, diazepam 2 mg·kg~(-1) and 4 mg·kg~(-1) depressed all parameters significantly compared with norm group(all P <0.01) and were similar as PB 10 mg·kg~(-1) , which indicated that sedative effect of diazepam was the same as PB 10 mg·kg~(-1) .Conclusion Locomotor activity model based on APATP may be used to evaluate drug effects on lomocotor activity induced by sedative hypnotics.

Objective:To investigate the mRNA expression of β_2-adrenergic receptor(β_2-AR) and the receptor post signaling materials cyclic AMP(cAMP) and cAMP-dependent protein kinase (PKA) activity in myocardial infarction(MI)rats.Methods:MI model was made by ligation of rats'left anterior descending coronary artery.A total of 48 adult Wistar rats were randomly divided into four groups:Control group,the rats were sham operated,and 2 weeks post MI group,4 weeks post MI group and 8 weeks post MI group.The myocytes suspensions were untreated or treated in each group by salbutamol,isoproterenol,ICI118,551,atenolol,propranolol and pertussis toxin(PTX)respectively.The mRNA expression of β_2-AR and β_1-AR from left ventricular myocardium were detected by RT-PCR,the concentration of cAMP was determined by competitive enzyme immunoassay and the activity of PKA was determined by non-radioactive protein kinase assay.Results:Compared with Control group,the mRNA expression of β_1-AR was lower in MI groups(P<0.05),and the ratio of β_2-AR to β-AR increased from 19% to 38%(P<0.01)after MI.Compared with the untreated cells,cAMP concentration was increased by salbutamol treatment in Control group and 2 weeks,4 weeks,8 weeks post MI group by 98.1%,133.6%,147.7% and 150.7% respectively(P<0.05).Compared with isoproterenol treatment,ICI118,551 decreased cAMP concentration in 8 weeks post MI group(P<0.05).Atenolol decreased cAMP in Control group,2 weeks and 4 weeks post MI groups(P<0.05);Propranolol decreased cAMP concentration in Control and three MI groups(P<0.05).β-receptor inhibitor inhibited PKA activity in 8 weeks post MI group(P<0.05),Atenolol inhibited PKA activity in Control group and 2 weeks post MI group(P<0.05),Propranolol inhibited PKA activity in Control group and three MI groups(P<0.05,respectively).Conclusion:The ratio of β_2-AR to β-AR increased after MI.β_2-AR agonist increased cAMP concentration and PKA activity in myocytes in post MI rats.

Objective To investigate the risk factors for vascular cognitive impairment and the effet of cerebral microbleeds (CMBs) on cognitive function in patients with ischemic stroke.Methods The data of patients with ischemic stroke over the age of 50 were collected.The Montreal cognitive assessment (MoCA) scale and Alzheimer's disease assessment scale-cognitive subscale were used to evaluate cognitive function.Hamilton depression scale (HAMD) was used to evaluate the depression status in order to exclude the patients with depression.The patients with ischemic stroke were divided into either a cognitive impairment group or a non-cognitive impairment group according to the scale evaluation results.The demographic and clinical characteristics in both groups were compared,and the multivariate logistic regression analysis was used to look for the independent risk factors for cognitive impairment in patients with ischemic stroke.The Spearman rank correlation method was used to analyze the degree of CBMs,total score of MoCA,and the correlations of all cognitive domains scores.Results A total of 169 patients with ischemic stroke were enrolled in the study.There were 80 patients in the cognitive impairment group and 89 in the non-cognitive impairment group; 34 patients had CMBs and 135 had no CMBs.The age was older (71.99 ±6.01 years vs.64.47 ±6.15 years; t =8.014,P =0.000),years of education were fewer (4.51 ± 1.534 years vs.6.94 ±2.357 years; t =8.023,P =0.000),systolic blood pressure was higher (156.19± 17.53 mm Hg vs.142.04± 16.03 mmHg,1 mmHg=0.133 kPa; t =5.479,P =0.000),scale of white matter lesion was higher (7.33 ± 2.04 vs.4.39 ± 2.17; t =8.951,P =0.000),cerebral infarction volume was larger (7 123.8 ± 1 587.1 mm3vs.5 628.4 ± 1 017.8 mm3;t =7.201 ; P =0.000),proportion of the patients with history of previous stroke or transient ischemic attack was higher (46.2％ vs.28.1％;x2 =5.982; P=0.014),and number of CBMs was larger (x2 =17.565; P=0.000) in the cognitive impairment group.Multivariate logistic regression analysis showed that the age (odds ratio [OR] 1.115,95％ confidence interval [CI] 1.013-1.227; P =0.026),years of education (OR 0.490,95％ CI0.325-0.793; P=0.001),systolic blood pressure (OR 1.048,95％ CI 1.014-1.083; P =0.005),scale of white matter lesion (OR 2.044,95％ CI 1.466-2.851; P =0.000),and cerebral infarction volume (OR 2.204,95％ CI 1.386-3.503; P =0.001) were all the independent risk factors for cognitive impairment in patients with ischemic stroke.Compared to the non-CBM group,the age was older (72.06 ± 5.59 years vs.67.01 ±7.15 years; t =4.427; P =0.000),years of education were fewer (3.97 ± 1.381 years vs.6.25 ±2.317 years; t =7.367,P =0.000),systolic blood pressure was higher (155.03 ±20.16 mm Hgvs.147.16 ±17.32 mm Hg; t =2.290,P =0.023),scale of white matter lesion was more higher (7.03 ±2.139 vs.5.47 ±2.591; t =3.247,P =0.001),cerebral infarction volume was larger (6 968.5 ± 1 507.4 mm3 vs.6 177.0 ±1 477.1 mm3; t =2.735,P =0.007),and proportions of hypertension (82.4％ vs.41.5％ ;x2 =18.149,P =0.000),hyperlipidemia (88.2％ vs.39.3 ％ ;x2 =26.067,P =0.000),history of previous stroke or transient ischemic attack (70.6％ vs.28.1％ ;x2 =21.061,P =0.000) and coronary heart disease (94.1％ vs.45.2％ ;x2 =26.278,P=0.000) were higher in the CBM group.The MoCA total score (M[Q1 ～ Q3]; 24 [24 ～25]vs.28 [27 ～ 28] ; Z =-7.092,P =0.000) as well as the scores of attention (6 [5 ～ 6] vs.6 [6 ～ 6] ; Z =-2.502,P =0.012),abstraction (2[1 ～2] vs.2[2 ～2] ; Z =-2.382,P =0.017) and visuoexecutive (2[1 ～2] vs.4[4 ～5]; Z=-7.321,P=0.000) in the CMB group were significantly lower than those in the nonCBM group.The Spearman rank correlation analysis showed that the CMB grade was negatively associated with the MoCA total score (rs =-0.879,P =0.000) as well as the scores of visuoexecutive (rs =-0.895,P =0.000),attention (rs =-0.337,P =0.005),and abstraction (rs =-0.333,P=0.006).Conclusions The age,years of education,systolic blood pressure,degree of white matter damage,and cerebral infarction volume are the risk factors for vascular cognitive impairment.The visuospatial executive dysfunction,attention and abstract thinking decline significantly in ischemic stroke patients with CBMs.CMBs and their numbers are closely associated with cognitive impairment.The more the CMB numbers are,the more obvious the cognitive impairment will be.

This paper presents a surgical optical navigation system with non-invasive, real-time, and positioning characteristics for open surgical procedure. The design was based on the principle of near-infrared fluorescence molecular imaging. The in vivo fluorescence excitation technology, multi-channel spectral camera technology and image fusion software technology were used. Visible and near-infrared light ring LED excitation source, multi-channel band pass filters, spectral camera 2 CCD optical sensor technology and computer systems were integrated, and, as a result, a new surgical optical navigation system was successfully developed. When the near-infrared fluorescence was injected, the system could display anatomical images of the tissue surface and near-infrared fluorescent functional images of surgical field simultaneously. The system can identify the lymphatic vessels, lymph node, tumor edge which doctor cannot find out with naked eye intra-operatively. Our research will guide effectively the surgeon to remove the tumor tissue to improve significantly the success rate of surgery. The technologies have obtained a national patent, with patent No. ZI. 2011 1 0292374. 1.
Computer Systems ; Fluorescence ; Humans ; Infrared Rays ; Lymph Nodes ; Neoplasms ; Optical Imaging ; Software ; Surgery, Computer-Assisted

Objective To explore the digital morphological and chromatic characteristics of erythrocytes infected with Plasmodium vivax. Methods The images of both normal and P. vivax infected erythrocytes were segmented and measured for morphologic parameters including area, length, breadth, perimeter, roundness, aspect ratio, equivalent circle diameter, as well as chromatic parameters including saturation and color (red, green, blue). A statistic analysis was performed for these parameters. Results Both morphological and chromatic parameters showed high significant differences between the normal and the infected erythrocytes, and high significant differences between the normal and the erythrocytes infected with different stages of P. vivax. Conclusion The differences mentioned above could be used as the basis for automatic identification of P.vivax in thin peripheral blood smears.

Objective To investigate the expression of presenilin-2(PS2) and glutathione S transferase ?(GST?) and their role in the prognosis and therapy of infiltrating ductal breast carcinoma. Methods The expression of PS2 and GST? in tumor tissues from 210 patients with infiltrating ductal breast carcinoma confirmed by pathologic examination and treated with modified radical mastectomy was examined by using LSAB immunohistochemical method. Results The expression rate of PS2 was 49.5%(104/210) and the expression rate of GST? was 48.1%(101/210). The grade of the postoperative 5-year survival rate and 10-year survival rate in four groups of 210 patients, from high to low, was the group 1 (PS2 positive expression/GST? negative expression), the group 2 (PS2 positive expression/GST? positive expression), the group 3 (PS2 negative expression/GST? negative expression) and the group 4 (PS2 negative expression/GST? positive expression). Conclusion The prognosis of the group 1 is the best, the group 2 better, the group 3 good and the group 4 the worst. The results suggest that reasonable use of endocrinotherapy and chemotherapy in infiltrating ductal breast carcinoma is necessary.

Objective To determine whether antibiotic prophylaxis can reduce the risk of postoperative infective complications in patients undergoing TURP who have sterile preoperative urine. Methods MEDLINE,EMBASE,CBMA and the Cochrane Library were searched for RCTs comparing antibiotic prophylaxis with placebo/blank controls for patients undergoing TURP with preoperative sterile urine.The search strategy was made according to the Collaborative Review Group search strategy.Data were extracted by two reviewers using the designed extraction form. The software RevMan was used to review management and data analysis.The results were expressed as RR and 95% confidence intervals (CI) for categorical outcomes and weighted mean difference (WMD) and 95%CI for continuous outcomes. Results 53 relevant RCTs were searched, of which 27 were included and 26 were excluded.Antibiotic prophylaxis significantly decreased the rate of post-TURP bacteriuria,post-TURP fever,post-TURP bacteremia and the rate of continuous antibiotic use.The corresponding pooled relative risk (RR) and 95%CI was 0.36 (0.28 to 0.46),0.83 (0.71 to 0.97),0.43 (0.22 to 0.86) and 0.26 (0.20 to 0.33),respectively.However,the available data failed to prove that antibiotic prophylaxis shortened the duration of hospitalization (WMD, -0.31;95% CI , -0.78 to 0.35). Conclusions Prophylactic antibiotics can significantly decrease the incidence of post-TURP bacteriuria,fever,bacteremia and continuous antibiotic treatment,but cannot significantly shorten the duration of hospitalization.Antibiotics should be used in patients undergoing TURP.

Objective　To observe the clinical results of total lamellar cornea with circular lamellar sclera transplantation to treat serious chemical burn of eye and study its immunological mechanisms.Methods　The patients(55 cases, 55 eyes) with corneal tansplantation were retrospectively analyzed. GroupⅠ(42 cases) was the patients with serious chemical burn of eye transplantation of total lamellar cornea with circular lamellar sclera, group Ⅱ(13 cases) was the patients transplantation of total cornea corresponding period of the groupⅠ. The time of tear-film break-up their rate of rejection and the time of occurrence of corneal neovascularization were compared.Results　The time of occurrence of corneal neovascularization and rejection of group Ⅰ were later than groupⅡ.Conclusion　Total lamellar cornea with circular lamellar sclera transplantation is an important method for treating serious chemical burn of eye, its immunological mechanisms is complex. It's important to increase the result of operation keeping high standard in quality of tear-film and using high effective immunosuppressive drug after operation.

Objective To investigate the effectsof quercetin on human umbilical vein endothelial cell (HUVEC)-12 undergoing endothelial-to-mesenchymal transition (EndMT) induced by TGF-β1; To discuss its mechanism of action. Methods Cell activity of intervening by quercetin with different concentrations and TGF-β1 for 72 h was detected by CCK-8 method;RT-PCR and immunofluorescence staining were used to detect the transition of endothelial and stromal markers; Western blot was used to detect the signal transduction pathway; RT-PCR was performed to detect the transcription factors that play crucial roles in the process of transformation. Results The results of RT-PCR and immunofluorescence double staining showed that TGF-β1 (10 ng/mL) stimulated HUVEC-12 cells for 72 h to induce fibroblast phenotype, showing more interstitial markers and less endothelial markers;Western blot and RT-PCR results showed that quercetin inhibited the phosphorylation of smad2/3 in a concentration-dependent manner;After TGF-β1 stimulation, the downstream transcription factors EndMT of snail1, twist1, twist2, ZEB1, and ZEB2 significantly increased, while 100 μmol/L quercetin could down-regulate the five downstream transcription factors. Conclusion Quercetin has anti-fibrosis effects through inhibiting HUVEC-12 cells undergoing EndMT.