The aim of our study wasto investigated the changesof NO concentration in the ischemic and reperfutional brain tissues and the relationship between the NO and brain damage.The animal models of middle cerebral artery occlusion were established by suture method.The changesof NO concentration were researched with method of Hb O2 -NO during the permanent ischemia and ischemia/ reperfusion.The results showed that the NO level in the injured brain tissue after3hours of ischemia was increased.After reperfusion,the NO level increased progressively,but NO level showed decreased and then increased during the permanent ischemia.Although there wasa decrease of NO level at7days after ischemia and reperfusion,but the NO level was higher than that of preischemia.It indicated that the changes of NO concentration during the different process of cerebral ischemia and reperfu- sion are related to the differentisoform of NOS,which have respective characteristic forsyn- thesizing NO in biochemistry,and deal with the cerebral ischemic and reperfusional injury.

Objective:To investigate the expression of P33~(ING1) protein in oral squamous cell carcinoma(OSCC) and its clinical significance. Methods:All samples of normal and cancer tissues from 30 patients with OSCC were examined for protein expression of P33~(ING1) by SP immunohistochemical staining.Results:The positive rate of P33ING1 in OSCC was 40%, that in normal oral mucosa tissue 100% (P

Objective To explore the effect of combined application of improved microencapsulation and intravenous injection of donor liver cells and spleen cells on pancreatic islet xenografts. Methods New born male pigs and SD rats were selected as donors and recipients respectively, and pig pancreatic islet cells were microencapsulated by static electricity improvement microencapsulation. Islet transplantation was performed after injection of donor liver cells and spleen cells via tail vein. The changes in blood glucose and serum C-peptide, the function-possessed days of islet xenografts and diabetes rats living period were observed. Results In combined application group, the function-possessed days of islet xenografts and diabetes rats living period were significantly prolonged (P

Esophageal cancer is one of the common malignancies of the digestive tract, and its exact etiology and pathogenesis have not been completely clear. The establishment of animal model of esophageal cancer provides support for the basic and preclinical research of esophageal cancer, which is of great significance for further study to clarify the pathogenesis and explore the development of new therapeutic drugs. At present, the animal models commonly used in the study of esophageal squamous cell carcinoma mainly include chemical induction model, heterotopic transplantation model and orthotopic transplantation model. With the continuous progress of animal research on human origin tumor, the human transplanted tumor model has been more and more widely used. No matter which model has its own advantages and disadvantages and applicability, should be selected according to the purpose of the experiment. In this paper, the research progress on animal models of esophageal squamous cell carcinoma in recent years is reviewed, and the models commonly used in scientific research and preclinical treatment are discussed, which may provide a theoretical basis for the clinical treatment.

BACKGROUND:Bone marrow stromal stem cels transplanted into infracted cardiac tissue can inhibit and reduce myocardial apoptosis, but whether this effect is correlated with improvement in cardiac function is stil unclear. OBJECTIVE:To study the early effect of bone marrow stromal stem cels transplanted into the ischemic myocardium on the cardiac function. METHODS: Models of acute myocardial infarction were established by ligation of the left anterior descending branch, while no ligation was done in the sham group. In the transplantation group, rat bone marrow stromal stem cels (0.1 mL, 2×106 RESULTS AND CONCLUSION:At 3 days after cel transplantation, myocardial apoptosis was more evident in the infarct and ischemic zones of the model group than the sham group; the number of apoptotic myocardial cels was significantly lower in the infarct and ischemic zones of the transplantation group than the model group. Compared with the sham group, the mean arterial blood pressure and left ventricular systolic pressure were ) were injected into five sites on the edge of infarcted myocardial tissues at 30 minutes after myocardial infarction. In the sham group and model group, the same volume of normal saline was injected into the myocardial tissues. Three days after cel transplantation, hemodynamic monitoring, echocardiography, TUNEL assay were employed to detect myocardial apoptosis. significantly reduced, the left ventricular end diastolic pressure was increased, and the left ventricular ejection fraction and shortened fraction were significantly lowered in the model and transplantation groups (P < 0.05), but there was no difference between the model and transplantation groups (P > 0.05). These findings indicate that myocardial apoptosis can be reduced but the cardiac function cannot be improved in acute myocardial infarction rats at early stage after bone marrow stromal stem cels transplantation.

Pimavanserin is a selective 5-HT2A receptor inverse agonist approved by FDA on April 29, 2016, and it is the first drug for the treatment of hallucinations and delusions associated with Parkinson' s disease. Pimavanserin is with high safety, good toleration and promising clinical efficiency, which is a timely option to resolve the drug shortage in clinic treatment. This paper summarized its pharmacodynamics, pharmacokinetics, clinical studies, adverse reactions and drug interactions.

ObjectiveTo evaluate the effectiveness of treating tuberculous pleurisy with hydrogen peroxide solution washing and povidone iodine solution perfusing topically.MethodsAfter fixing position with B ultrasound or 64 rows spiral computed tomography,the thoracic cavity was firstly inspected with thoracoscope,the effusion was exhausted and the conglutionations was cut with thoracoscope or high frequency electrome,then the thoracic cavity was washed with 200 ml 3％ hydrogen peroxide solution,and lastly it was perfused continually with 0.5％ povidone iodine solution to control the intracavity infection quickly and to promote cicatrization.After routine antitubercular therapy for one year,the time of pleural effusion disappearing and the state of pleura hypertrophy was observed.ResultsThere were 86 cases in all.After antitubercular therapy and extracting pleural effusion at the same time in 48 cases.Twenty-two cases'effusion didn't increase basically after 4 weeks.They stopped extracting effusion and went on with antitubercular therapy (the first group).The rest 26 patients continued to accept the therapy of hydrogen peroxide solution washing and povidone iodine solution perfusing topically(the second group),and 23cases achieved remedial goal in a week with the effective rate of 88.46％ (23/26).The third group had 38 cases who didn't accept thoracocentesis but accepted the therapy of hydrogen peroxide solution washing and povidone iodine solution perfusing directly,and there were 36 cases that achieved remedial goal in a week with effective rate of 94.74％ (36/38).The time of pleural effusion disappearing in the third group was obviously shorter than that in the first group (1 week vs.4 weeks )(P ＜ 0.05 ),and there was no significant difference in the efftective rate between the second group and the third group (P ＞ 0.05 ).Half a year after therapy,the thickness of pleura was measured and it was found that in the first group was thickest and in the third group thinnest and even some without hypertrophy.It was the same effect after one year.Conclusions The effectiveness of the method treating tuberculous pleurisy with hydrogen peroxide solution washing and povidone iodine solution perfusing topically is defimite,and the method can shorten the time of pleural effusion disappearing and alleviate the pleural hypertrophy.

To assure the clinical quality and requirement of CT shelter used in field environment, the factors related with the practical application were studied. The evaluation indicators of CT equipment were investigated. Based on the technical modification of vehicle shelter CT, the scanning conditions of shelter CT were analyzed. Moreover, the comparative study was done between shelter CT and common CT in hospitals. In result, in order to meet maneuverability application in the field, vehicle shelter CT was restrictive by the field conditions, traffic impacts and running requirement. The application of vehicle shelter CT was affected by the factors, such as mechanical stabilization, moving precision, power fluctuations and variations of temperature and humidity, etc. The results were helpful to improve the clinical quality of vehicle shelter CT and made a base for the quality control study in the future.
Humidity ; Temperature ; Tomography, X-Ray Computed ; instrumentation

Adult ; Chronic Periodontitis ; diagnosis ; diagnostic imaging ; therapy ; Combined Modality Therapy ; Dental Implantation ; Dental Scaling ; Female ; Follow-Up Studies ; Guided Tissue Regeneration, Periodontal ; Humans ; Orthodontics, Corrective ; Radiography, Panoramic ; Tooth Loss ; diagnosis ; diagnostic imaging ; surgery ; Toothbrushing

The reverse problem of Electrical impedance tomography(EIT) is a highly ill-posed problem.It is concluded that spatial prior information could improve the final image quality.This paper proposes a new method for obtaining prior information.By this method,the inspected cross-section contour and internal structure for EIT can be achieved.