Objective To observe the repairing effects of myoblasts from mesenchymal stem cells induced by MyoD transfection on muscle injury, and to explore its mechanism. Methods One hundred and sixty male SCID mice were randomly assigned into 4 groups [normal group, control group with injury, implantation with mesenchymal stem cells (MSCs) group, and implantation with myoblasts group]. MSCs were transfected by pIRES2-EGFP-MyoD and differentiated into myoblasts. Myoblasts and MSCs were injected respectively into the muscular tissue injuried by cardiotoxin. The repairing effect in injuried muscles, which were injected with myoblasts and MSCs, was observed 1, 2, 4 and 6 weeks after the injection. Results The muscular tissue injury model was successfully reproduced. Both MSCs and myoblasts showed obvious repairing effects on the injured muscular tissue, and the strength of muscular tissue in myoblasts group was stronger than that in MSCs group. Western blot assay showed that MyoD expression in myoblasts group was much higher than that in both MSCs and control groups, the expressions of JNK1 and ERK2 were up-regulated in myoblasts group, and the p38 expression was down regulated significantly in the 1st week, but no significant difference was found when compared with those of the normal group at the 6th week. Conclusion Myoblasts transdifferentiated from MSCs induced by MyoD can repair the injuried muscular tissue effectively. JNK1, p38 and ERK2 play important roles in the repairing process.

Objective To summarize the experience of heart-lung transplantation.Methods Four patients with Eisenmenger’s syndrome underwent heart-lung homoplastic transplantation. All patients were complicated with severe pulmonary hypertension in New York Heart Association ( NYHA ) functional class IV. Cannulation for cardiopulmonary bypass consisted of a cannula in the high ascending aorta and separate vena caval cannulas. The heart-lung graft was moved into the chest, beginning with passage of the lung before the phrenic nerve pedicle. The bronchus was trimmed, leaving two cartilaginous rings proximal to the orifice of the upper lobe. The tracheal anastomosis was performed with a continuous 4-0 polypropylene suture, with the posterior portion continuously and anterior interrupted. The lungs were then ventilated (

Embryonic stem cell (ESC) is a kind of stem cell with self-renewal capability and developmental luripotency,which is at the early stage of embryonic development,and it is the original cell of various kinds of tissue and organ.Under certain conditions,ESCs can maintain an undifferentiated state,long-term surviving and infinite breeding state in vitro.The research of tberapeutic effect of ESCs in animal disease model,especially in ouse,has made great progress.On the basis of this research,researchers attempt to use ESCs for the clinical therapy of various diseases,and investigate the feasibility and security of this kind of therapy.Currently ESCs have been used in the therapy of diabetes mellitus,Parkinson's disease and cardiovascular injury.Even though many problems of technique and ethics should be done,we believe that ESC therapy will be a promising method and used in linical practice if we make clear the mechanism of ESC directional differentiation,establish an optimal culture system,and solve the problem of oncogenicity.

Acute cerebral infarction is a common disease of the central nervous system, the key of the current treatment is to restore blood flow and save ischemic penumbra .The studies have shown that good collateral circulation can reduce the infarction area, improve prognosis.Thus, an accurate and complete evaluation of collateral circulation in the early stage of disease has an important sig -nificance.The development of modern imaging techniques provides important means for the assessment of collateral circulation estab -lishment in acute stroke .In this paper, techniques and methods of the imaging examination of collateral circulation establishment in a -cute cerebral infarction and methods are reviewed, aiming to provide the basis for choosing reasonable imaging modality .

Objective To discuss the important points of rescue strategies in saving patients and related administration to minimize the medical risk of county or district hospitals. Methods The analytic method to minimize the medical risk of district and county hospitals was from clinical practice and via induction,summary and reorganization. Results and Conclusions The reasonable and effective clinical medical operative process includes,timely necessary emergency initial examinations,immediately organizing group consultation after mastering the emergency rescue procedures in various critical situations,following the newest modern treatment guidelines or professional expert consensus,treating patients with correct motivation to maximize the therapeutic effect,carrying out treatment while the diagnosis confirmed,properly communicating between doctor and patient,timely recording the medical record,improving the diagnosis and treatment capacity in cases with critical and difficult diseases step by step,correcting the errors and mistakes,immediately and effectively proceeding to crisis public relations in time.

BACKGROUND: Previous animal studies demonstrated that bone marrow mesenchymal stem cells could differentiate into nerve cells under a certain condition; however, the clinical application for treating nervous system disease has been less reported. OBJECTIVE: To observe a short-term effect of autologous bone marrow mesenchymal stem cell transplantation on treating cerebral hemorrhage.METHODS: A total of 32 patients with cerebral hemorrhage who were selected from the Department of Neurosurgery, Liaocheng Brain Hospital between November 2007 and January 2009 were considered as a treatment group. According to general data and the amount of hematoma, they were treated by drilling drainage or hematoma evacuation. Drainage tubes were detained into hematoma cavity, and 3.5 mL autologous bone marrow mesenchymal stem cell suspension was injected through drainage tube. A total of 40 additional patients who did not treated with stem cell transplantation were considered as a control group. Neurologic impairment (NIHSS) and activities of daily living (Barthel index) were performed before and 6 months after transplantation; meanwhile, the brain MRI, serum biochemical and tumor marker were evaluated to detect security of stem cell transplantation. RESULTS AND CONCLUSION: The NIHSS score and Barthel index in the treatment group were similar to those in the control group before transplantation. Compared with control group, NIHSS scores were significantly decreased in the treatment group (P < 0.01), but Barthel index was significantly increased 6 months after transplantation (P < 0.01). Compared with before transplantation, NIHSS score were significantly decreased (P < 0.01), but Barthel index was significantly increased in the treatment group 6 months after transplantation (P < 0.01). Two patients in the treatment group had febrile, which was recovered after treatment. The following-up 6 months after transplantation demonstrated that brain MRI and biochemical indicators were normal except an increasing of CA-153 caused by lung cancer in one patient. The autologous bone marrow mesenchymal stem cell transplantation for treatment of cerebral hemorrhage is safe and effective in a short-term period; however the long-term effect still needs to be further studied.

0. 05) . Compared with Iso analgesic group ( Iso group) ,the TFL or HPPT of co-administration groups ( Iso + M6 group,Iso + M3 group) shortened ( P 0. 05) . Conclusion These findings suggest that the surface analgesic effects of Iso are closely related to the excited 5-HT1A receptor in the spinal cord of mice.

Objective:To evaluate the immunogenicity of an experimental SARS-CoV inactivated vaccine.Methods:The virus suspension of F69 strain was inactivated with 0.4% formaldehyde and purified,then used as the immune antigen combined with Freund′s adjuvant.Eight adult New Zealand rabbits were immunized 4 times with this vaccine.12 sets of rabbit serum were sampled from the third day to 74th day after first immunization.Titers of specific IgG antibody and neutralizing antibody were determined by indirect ELISA and micro-cytopathic effect neutralizing test.Results:Rapid and potent humoral immune responses were induced by F69 inactivated vaccine in all eight immunized rabbits.Both specific IgG antibody and neutralizing antibody all peaked just with 2 vaccinations,with the maximum titer of 1∶81 920 and 1∶20 480 respectively about 6 weeks after first immunization.Across neutralizing reaction existed between F69 and Z2-Y3 strains.Conclusion:F69 inactivated vaccine owns strong immunogenicity.Similar antigenic epitopes exist between the F69 strain and Z2-Y3 strain,which ensured the cross neutralizing reaction.

Objective To analyze the effect of autologous bone marrow stem cells transplantation in treatment of patients with decompensated cirrhosis. Methodls Seventy-eight patients (aged from 26 to 67) with decompensated cirrhosis, including 56 with hepatitis B, 21 with alcoholic cirrhosis and 1 with schistosomial cirrhosis, were included. Bone marrow was aspirated from poster superior spine. After isolation and purification, the stem cells were transplanted into liver via hepatic artery. The liver function, laboratory parameters and Child-Tureotte-Pugh scores were evaluated in 2,4 and 8 weeks after transplantation. Results At the 4th week after transplantation, the level of albumin was increased obviously from (32.9±5.58) g/L to (38.32±6.45) g/L,whereas the alanine aminotransferase was decreased from (96.92±83.91) U/L to (73.48±18.46)U/L. It was revealed that the prothrombin time was decreased from (16.66±3.91) s to (15.52±3.35) s and fibronegen increased from (2. 22 ± 0. 88) g/L to (2. 58±0. 88) g/L. After transplantation, appetite was improved in 72 cases (92.3%), ascites was decreased in 70 cases (89.7%) and abdomen distention was ameliorated in 68 cases (87.2%). There was no complications related to the transplantation. Conclusion Transplantation of autologous bone marrow stem cells is a safe and effective method in treatment of patients with decompensated cirrhosis.

Objective In recent years , multivariate pattern analysis ( MVPA) method was proposed and considered to be a promising tool for automated identification of various neuropsychiatric populations .Support vector machine ( SVM) is one of the most widely used methods of MVPA .Using SVM classifier for MVPA of amnestic mild cognitive impairment (aMCI) and normal control (NC) group, the present study aims to build an individual diagnostic model with significant discriminative power and investigate the gray matter abnor-malities of aMCI patients . Methods Fifty-one aMCI patients and 68 normal controls were scanned on the 3-Tesla magnetic resonance imaging (MRI) for high-resolution T1-weighted images.Gray matter volume map was calculated for each subject and used as features for subsequent discriminative analysis .We first applied feature selection to remove redundant information and reduce feature dimension , and then trained an SVM classifier . Leave-one-out cross validation ( LOOCV) was used to estimate the performance of the classifier , and finally the most discriminative features were identified . Results The proposed classifier achieved a classification accuracy of 83.19%with a sensitivity of 76.47%and a specificity of 88.24%.In ad-dition, the area under the receiver operating characteristic (ROC) curve was 0.8368.Further analysis revealed that the most discrimi-native features for classification included bilateral parahippocampal gyri , bilateral hippocampi , bilateral amygdala , bilateral thalamus , right cingulate , right precuneus , left caudate , left superior temporal gyrus , left middle temporal gyrus , left insula and left orbitofrontal cortex. Conclusion The proposed classification model has achieved significant accuracy for aMCI prediction , and it also displayed the whole brain gray matter atrophy pattern in aMCI patients .It suggests that the proposed method may have important implications for early clinical diagnosis of aMCI patients .