Wake-up stroke (WUS) patients are those who go to sleep without stroke symptom and wake up with stroke symptom. WUS is very common in clinical practice. One out of every five new ischemic strokes is WUS. These patients are usually excluded from thrombolytic therapy because their exact onset time is unknown. The latest research have shown that reperfusion therapy is safe and effective in selected WUS patients based on multimodal imaging. This article reviews the imaging -guided reperfusion therapy for WUS.

Objective To examine the reliability,validity and sensitivity of Montgomery-Asberg Depression Rating Scale (MADRS) for patients with current major depression disorder (MDD). Methods One hundred and twenty-two current MDD (DSM-Ⅳ) patients were administered with MADRS, Hamilton Rating Scale for Depression-17 item version (HAMD) and Clinical Global Impression of Severity (CGI-S) at baseline, 12 patients were selected to complete rater agreement test,and 47 patients receiving antidepressant treatment were followed up at 2,4,6 and 8 week and administered with MADRS and HAMD. Correlation analysis, reliability analysis and effect size (ES) calculation were used to determine the reliability,validity and sensitivity to changes during drug treatment. Results Intra rater reliability for MADRS was 0. 954. Baseline item-total score correlations were between 0. 445 and 0. 770 (P ＜ 0. 01 ), and the average correlation was 0. 629. The Cronbach α coefficient was 0. 847. The criterion related validity with HAMD and CGI-S was 0. 853 and 0. 672 (P＜0.01) ,respectively. The re-test reliability for MADRS at 2,4,6 and 8 week was 0. 737 ,0. 651,0. 543 and 0. 524 (P＜0. 01 ) ,respectively.MADRS had higher ES than HAMD when taken as clinical endpoint outcome measurement (0.41 vs 0.40,0.87 vs 0. 72,1.14 vs 0. 88,1.20 vs 0. 96 for 2nd,4th,6th and 8th week, respectively). Conclusion MADRS has good reliability and validity for patients with MDD. It is more sensitive to assess drug effect than HAMD.

Rhubarb is a traditional Chinese medicines which possess laxative, lipid-lowering, and weight-loss activities, but the active compounds of lipid-lowering and underlying molecular mechanisms are not yet clear. This study aims to explore the effects of chrysophanol on the mRNA expressions of sterol regulatory element-binding proteins (SREBPs) and lipid metabolism in human liver carcinoma Huh-7 cells, which is one of the active compounds obtained from Rhubarb. A reporter gene assay was used to test the transcription of SREBP. The intracellular triglyceride and total cholesterol contents were measured by using commercially available test kits. The SREBPs target genes expressions were measured by Quantitative Real-Time PCR. Cell viability was evaluated by Cell Counting Kit-8. As the results shown, chrysophanol (40 μmol · L(-1), 16 h) could notably inhibited human SRE promoter activity in a dose-dependent manner and decrease intracellular cholesterol and triglyceride levels. Furthermore, the mRNA expressions of SREBPs target genes were significantly downregulated by chrysophanol treatment. However there are no significant differences on cell viability when compared with the control group. These results suggested that chrysophanol might improve lipid metabolism through suppressing the mRNA expressions of SREBPs target genes to attenuate intracellular lipid accumulation.

Thirty patients with confirmed primary sjogren syndrome and thrombocytopenia during January 2002 and December 2007 were investigated.All the participants received 0.5 mg·kg-1·d-1 Prednisone and 100 ms/d CosA for 1 year.Clinical symptoms and the levels of white blood eell.platelet count,erythrocyte sedimentation rate,liver function,immunoglobin,and rheumatoid factors were recored before and after the treatment.After one-year follow.up,platelet count was elevated(t=11.4179,P< 0.01).There was no significant change in erythrocyte sedimentation rate.The concentrations of immunoglobin and rheumatoid factors were significantly decreased at 1 year(t=5.4222,P<0.01;t= 9.2857.P<0.01).Prednisone plus CosA could effectively treat primary sjOgren syndrome combined with thrombocytopenia and result in fewer side effects.

OBJECTIVE To observe the effect of 32P intertissue injection on advanced head and neck cancer. METHODS Eight patients with advanced head and neck cancer were treated with 32P injection into the tumors according to the size of the cancer as determined by CT scan. RESULTS Local tumors were controlled evidently and the pain of the patients were alleviated. The survival periods of the 8 cases ranged from 3 to 18 months (average 14.2 months). CONCLUSION 32P intertissue injection offer an useful method for patients with advanced head and neck cancer .

Objective To synthesize 11 C-methyldopamine (MDA) and to explore its feasibility as an agent for cardiac sympathetic nerve imaging.Methods 11 C-MDA was synthesized by direct N-methylation method and purified by semi-preparation reverse HPLC.Thirty Kunming mice were divided into five groups by random number table.The mice were respectively sacrificed at 2,5,10,20 and 30 min after injection of 7.4 MBq 11C-MDA.The lung,liver,spleen,kidney,stomach,intestine,brain,muscle,bone tissues and blood of mice were removed and weighed before radioactive γ-counting.The ％ID/g was calculated.Six Chinese mini-swine were divided into normal group (n=3) and inhibition group (n =3) for myocardial imaging.Mini-swine of inhibition group were injected with 10 mg/kg imipramine hydrochloride at 30 min before 11C-MDA (370 MBq) injection.The data were analyzed with SPSS 15.0 software.Results The synthesis of 11 C-MDA took 45 min with radiochemical yields of (20±3)％.The solution of11 C-MDA was colorless and the pH value was 6.5.The radiochemical purity was more than 98％ and the specific activity was 50 GBq/mmol.The myocardial uptake reached the peak value of (8.78± 1.18) ％ID/g at 2 min after injection of 11 C-MDA in mice.11C-MDA was mainly metabolized through liver and kidney.PET/CT imaging showed that 11 C-MDA was highly uptaken in swine myocardium and could be blocked by imipramine hydrochloride.Conclusions 11C-MDA can be synthesized by a simple and economic method.The high uptake rate of 11 C-MDA in the heart suggests it may be a potential agent for cardiac nerve imaging.

OBJECTIVE: To investigate the expression of Survivin, p53 and Ki67 in laryngeal carcinoma and the relation with clinical data. METHOD: Immunohistochemical staining (SP) was used to detect expression of Survivin, p53 and Ki67 of 64 cases with laryngeal carcinoma, 26 cases with precancerosis, 34 cases with vocal polyps. RESULT: The positive expression rates of Survivin, p53 and Ki67 were 59.4%, 68.8%, 65.6% respectively in laryngeal carcinoma, which were significantly higher than those in precancerosis and vocal polyps (P < 0.01). The expression of Survivin, p53 and Ki67 in laryngeal carcinoma were significantly statistical different in TNM stage and lymph node metastasis (P < 0.05), but were not correlated with patients' ages, the pathological grades, 3 years and 5 years surviving rates (P > 0.05). The expression of Survivin, Ki-67 and p53 was positively correlated (r = 0.607, 0.541, 0.648, P < 0.01) in laryngeal carcinoma. CONCLUSION Survivin, p53 and Ki-67 may play an important role in the carcinogenesis and progress of laryngeal carcinoma. They may play synergetic roles in the process of carcinogenesis of laryngeal carcinoma.
Carcinoma, Squamous Cell ; metabolism ; Humans ; Immunohistochemistry ; Inhibitor of Apoptosis Proteins ; metabolism ; Ki-67 Antigen ; metabolism ; Laryngeal Neoplasms ; metabolism ; Larynx ; Lymphatic Metastasis ; Polyps ; metabolism ; Survivin ; Tumor Suppressor Protein p53 ; metabolism

BACKGROUND:Recently,the development of tissue-engineered technique lms broadened the study of artificial esophagus.Some investigators have inoculated esophageal epithelial cells cultured in vitro onto compound polymer material and successfully constructed tissue-engineered esophagus.OBJECTIVE:To investigate the feasibility of tissue-engineered artificial esophagus by combining dog esophageal epithelail cells and an acelhilarized porcine thoracic aorta allogenic matrix.DESIGN:An experimental observation.SETTING:Central Laboratory,Taishan Medical College.MATERIALS:This study was carried out in the Central Laboratory.Talshan Medical College from June to December in 2004.Three hybrid dogs,24-hour-old,were provided by the Laboratory Animal Center,Taishan Medical College.The protocol was performed in accordance with ethical guidelines for the use and care of animals.The experimenhal instruments and reagents were as follows:CO2 incubator(MCO-15AC,SANYO),hypothermal high-speed centrifuge(RC-26,Dupont),trypsin,transferrin,type Ⅱ collagenase(Gibco),dulbecco's modified eagle's medium(DMEM),DispaseⅡ isolated enzyme,and rat monoclonal anti-keratin antibody(Sigma).METHODS:Acellularization of porcine aortas was performed by a method of enzyme-detergent.Esophageal epithelial cells of hybrid dogs were in vitro isolated,cultured and proliferated.Next,they were inoculated onto an acellularized porcine thoracic aortas allogenic matrix seaffold.Three and seven days later,the growth of esophageal epithelial cells on the acellularized matrix was observed under an electron microscope.MAIN OUTCOME MEASURES:Morphology of esophageal epithelial cells cultured in vitro;Biocompatibility of acellular matrix and dog esophageal epithelial cells.RESULTS:The acellularized procedure resulted in an almost complere removal of the cells and the loose three-dimensional matrix.The acellular matrix could be reseeded with expended esophageal epithelial cells in vitro.and esophageal epithelial cells had the potential of spread and proliferation.CONCLUSION:Acellular matrix possesses satisfactory biocompatibility for allogenic esophageal epithelial cells.Tissue-engineered artificial esophagus can be generated in vitro by a combination of esophageal epithelial cells and allogenic aceilularized matrix.

Objective To investigate the influence of cerebral lymphatic blockade (CLB) on apoptosis of hippocampal neurons after subarachnoid hemorrhage (SAH) in rats. Methods Healthy adult Wistar rats were randomly assigned to normal control group,SAH group and SAH + CLB group. SAH model was induced by double injection of autologous blood into the cistema magna. On day 3 after second injection, hippocampal cell shape structure of each group were determined by hematoxylin-eosin staining (HE) and propidium iodide (PI) staining. Terminal-deoxynucleotidy transferase mediated nick end labeling (TUNEL) fluorescent was used to determine the situ apoptosis. Immunohistochemistry was conducted to study the expression of caspase-3 and Bcl-2 in hippocampal neurons. Results (1) HE staining and PI staining showed the hippocampal neurons of SAH rats were partly shrink,and nuclei showed wavy or folded seam-like,some crescent-shaped; the hippocampal neurons in SAH + CLB group distributed sparsely,nuclear fragmentation,apoptotic bodies could be seen,surrounded by vacuole formation, Compared with the SAH group, the number of apoptotic cells in SAH + CLB group was significantly increased(the number of apoptotic cells: 0.71 ±0.05,25.36 ±4. 02,37. 82 ±5.93, P<0.01). (2) The fluorescence intensity of positive cells by TUNEL stain in SAH group and SAH + CLB group was higher than in normal control group,while the SAH + CLB group was significantly higher than the SAH group (the fluorescence intensity: 0.19 ±0.03,1.70 ±0.37,2.54±0.53, P<0.01). (3) The fluorescence intensity of caspase-3 in SAH group and SAH + CLB group was higher than the normal control group, while the SAH + CLB group was significantly higher than the SAH group (the fluorescence intensity: 0.14 ±0.03,2.45 ±0.49,2.96 ±0.44, P<0.01). (4) The fluorescence intensity of Bcl-2 in SAH group and SAH + CLB group was higher than the normal control group, while the SAH + CLB group was significantly lower than the SAH group(the fluorescence intensity: 0.58 ±0.08, 3.40 ±0.61,2.67 ±0.44, P<0.01). Conclusion Cerebral lymphatic blockade induce the apoptosis of hipp-ocampal neurons in rats after SAH,which mechanism may be related to high expression of caspase-3 and low ex-pression of Bcl-2.

Objective To investigate the relationships of peripheral blood levels of interleukin 6 receptor (IL-6R),a disintegrin and metalloprotease with thrombospondin type 1 motifs (ADAMTS-1) and high sensitive C reactive protein (hs CRP) with Gensini score and Ambrose classification in patients with coronary heart disease,and to investigate the correlations of IL-6R,ADAMTS-1 and hsCRP levels with unstable coronary atherosclerotic plaques.Methods 328 patients undergoing coronary angiography were admitted,and 272 patients were diagnosed as coronary heart disease including 105 cases with acute myocardial infarction (AMI),126 cases with unstable angina peetoris (UA) and 41 cases with stable angina pectoris (SA).The 56 cases with no coronary artery stenosis were selected as control group.We detected the levels of IL-6R,ADAMTS 1 and hs-CRP in all patients,and then evaluated their Gensini scores by coronary angiography,and appraised the character of the plaque by Ambrose classification.Results The serum levels of IL 6R and ADAMTS-1 were higher in AMI and UA groups than in SA and normal control groups (all P＜0.05).The level of hsCRP was higher in AMI group than in UA,SA and control groups (all P＜0.05).The levels of IL-6R,ADAMTS 1 and hs-CRP were higher in complex lesion group evaluated by Ambrose classification than in simple lesion group and normal control group (all P＜0.05).ADAMTS-1 level was higher in simple lesion group than in normal control group (P＜0.05).The level of IL 6R was positively correlated with ADAMTS-1 levels (r=0.70,P＜0.05),while the serum IL-6R,ADAMTS-1 and hsCRP levels had no relationship with Gensini score in patients with coronary heart disease (all P＞ 0.05).Conclusions The IL-6R,ADAMTS-1 and hs-CRP levels can be the indexes for evaluating the plaque stability in patients with coronary heart disease,but have no relationships with the severity of coronary artery stenosis.