Objectives:To develop a preparative method of continuous acid-urea-polyacrylamide gel electrophoresis (CAU-PAGE) to purify the defensin components from human and rabbit neutrophils (HNP-1～3 and RNP-1～5).Methods:Neutrophils were isolated from human peripheral blood or rabbit artificial aseptic ascites.The components of defensin were extracted by 5% acetic acid directly followed by elution of CAU-PAGE,and purified HNP-1～3 or RNP-1～5 were harvested.Polyacrylamide gel filtration was used as the method for comparison.Results:For each elution circa 1.50 mg of purified HNP or 2.50 mg of RNP were obtained from 5×108 of neutrophils,and their natural biological activity was preserved.Conclusions：CAU-PAGE is a relatively simple,rapid,economical method for purifying cationic peptides as the components of defensin.

Objective To determine the anti-SARS coronavirus (SARS-CoV) activity of defensins from human and rabbit, and explore the effects of defensin during the onset and progression of SARS. Methods Defensins were purified from neutrophil of human and rabbit respectively, namely HNP (human neutrophil protein) 1-3 and RNP (rabbit neutrophil protein) 1-5, by acid-urea-polyacrylamide gel electrophoresis (CAU-PAGE). The effect of defensin on Vero-E6 cell infected by SARS CoV BJ01 strain as well as the replication of virus were observed by micro-culture technique. Rusults The HNP 1-3 and RNP 1-5 separated by CAU-PAGE presented a single band with molecular weight of approximately 4000 dalton on 15% SDS-PAGE. HNP 1-3 was identified and validated by quantitative ELISA. The activity of anti-escherichia coli (ATCC25922 strain) of HNP 1-3 and RNP 1-5 was tested by MIC determination method, and the IC50 values obtained were 25～50?g/ml and 5～10?g/ml, respectively. In the antiviral experiment, HNP 1-3 and RNP 1-5 in the concentration from 25 to 100?g/ml were not able to prohibit cytopathic effect (CPE) of SARS-CoV and the replication of virus in Vero-E6. Conclution The natural defensins (HNP 1-3 and RNP 1-5) purified from neutrophils do not play any prohibitory or eliminative effects on SARS-CoV, indicating that that human and rabbit do not have natural immunity against SARS-CoV.

Objective To investigate the association between the lumbar vertebral fracture damage degree with the fracture classification,injury score,kyphosis deformity and nerve function injury.Methods According to the damage degree of posterior lig ament complex(PLC),the patients were divided into the PLC intact group and PLC injury group.Its relationship with PLC injury was researched by evaluating the fracture classification,injury score and nerve function injury situation in the two groups.Results The LCS score and TLICS score in the PLC injury group were (7.1±0.8) points and (8.2±0.6) points,which were higher than (5.7±0.5) points and (4.6±0.7) points in the PLC intact group.The Denis score in the PLC injury group was more serious.The Cobb angle in the PLC injury group was 29°,and which in the PLC intact group was 19°.The proportion of nerve function insufficiency in the PLC injury group was 89％,while which in the PLC intact group was only 60 ％.Conclusion The thoracolumbar vertebral fracture is closely related with PLC.PLC damage degree is positively correlated with the fracture classification,injury score,kyphosis deformity and nerve function injury degree.

AIM:To investigate the expression and the significance of VEGF-C/D in rat cornea after alkali burning as well as the role of lymphangiogenesis in the high-risk corneal transplantation rejection.
●METHODS:The model of alkali burn corneal was made. Different times corneas were taken to electron microscope for vascularization, and examined the expression of VEGF-C/D and VEGFR-3 in l, 3, 5, 7, 14, 28d. The other rat cornea after alkali burn were divided into four parts to penetrate keratoplasty, containing only blood vessels in the cornea ( group A ) , angiogenesis and lymphangiogenesis ( group B ) , lymphangiogenesis degenerating period ( group C ) , angiogenesis degenerating period ( group D ) . ln addition, there are also normal groups ( group N ) to compare the Rl values and survival time of corneal graft.
●RESULTS: Electron microscopy showed that, when the first 7d rat cornea appeared neovascularization after alkali burn, but not lymphangiogenesis. The occurrence of new blood vessels and lymphatic in 2wk. There were no obvious lymphangiogenesis in 5wk and the angiogenesis gradually subside in 8 wk. The expression of VEGF-C/D and VEGFR-3 in the corneas of rats were up-regulated in the third days after the injury, and reached its peaks at 5d. The average survival time of group N, A, B, C, D were (14.25±0.62)d, (9.35±1.02)d, (5.06±1.13)d, (8.71±0.83) d, (9. 44±1. 05)d after transplant cornea. Compared to the rest of the group, group B plant average survival time significantly shortened (P<0. 05), while compared with group B, the survival time of A, C, D groups were significantly longer (P<0. 05).
● CONCLUSION: VEGF - C/D and VEGFR - 3 are expressed significantly after corneal alkali burn. New lymphatic vessels can accelerate high - risk corneal transplantation immune rejection.

Objective To observe the effect of combined therapy of external point application and herbal concentrate-granules on patients with asthma (hot wheezing in TCM).Methods 60 patients suffering from onset period of bronchial asthma were randomized to a control group and a treatment group.The control group was given budesonide inhaler and theophylline sustained release tablets.The treatment group was given combined therapy of external point application and herbal concentrate-granules.The course of treatment was 10 days.To observe the value ofFEV1％,ACT scores and TCM syndrome scores etc.Results After treatment,the value of FEV 1％ [treatment group:(82.83 ± 11.35) ％,control group:(83.85 ± 16.72) ％] and ACT [treatment group:(19.86±2.32),control group:(19.66±2.54)] in both groups were markedly increased with statistical significance (P＜0.01); and the difference between the two groups were also significant; TCM syndrome scoring [treatment group:(4.27±3.65),control group:(5.05±4.14)] was notably decreased in both groups compared with the values before the treatment with statistical significance (P＜0.01); but the difference between the two groups was not significant (P＞0.05).Conclusion The combined therapy of external point application and herbal concentrate-granules can treat bronchial asthma in the acute clinical course and improve lung function.

Objective To survey the epidemiological situation of asthma in remission stage in Liaoning province,and provide evidence for preventing and treating asthma.Methods 800 patients of asthma in the remission stage were investigated through the questionnaire investigation.Results Onset age of asthma in Liaoning province was 30～40 years old.The sex ratio between male and female was 1 ∶ 1.34.The number of staff was the highest (25.75％).Most of the course of asthma was 1～5 years (33.50％).The number of patients who often receive treatments was 59 (7.38％)and the number of patients with allergy history was 531 (66.38％).Conclusion Prevention,management and treatment of asthma should be strengthened.

BACKGROUND:The effects of both conservative and traditional open reduction and internal fixation are dissatisfactory in the treatment of thoracolumbar fractures, however, minimal-invasive percutaneous pedicle screw-rod systems provide a new available method.
OBJECTIVE:To investigate the clinical effect of percutaneous pedicle screw fixation using Sextant minimal-invasive system in the treatment of thoracolumbar fractures.
METHODS:A total of 55 patients, who had undergone percutaneous pedicle screw fixation using Sextant system (25 patients) or open pedicle screw fixation (30 patients) for single-level vertebral body compression fractures in Department of Orthopedics, Renmin Hospital of Wuhan University from February 2011 to January 2013, were enrol ed in this study. They showed no neurological signs and symptoms. The operative time, intraoperablood loss, postoperative drainage amount, length of hospital stay, pre-and post-operative Cobb angle and anterior vertebral body height ratio were recorded and compared between two groups.
RESULTS AND CONCLUSION:Except two patients in open pedicle screw fixation group were lost after discharge, al other patients were fol owed up for 8-14 months. There were significant differences in operative time, intraoperative blood loss, postoperative drainage amount and length of hospital stay between two groups (P=0.000 0). The post-operative Cobb angle was significantly lower while anterior vertebral body height ratio was significantly higher at one week than those before fixation in two groups (P=0.000 0). No significant difference was found in correction loss between two groups at 8 months after operation. Experimental findings indicate that, percutaneous pedicle screw fixation using Sextant system has a satisfactory outcome in the treatment of thoracolumbar fractures. However, understanding the correct indications is very important for clinical application.

Adenoma, Pleomorphic ; metabolism ; pathology ; surgery ; Adipose Tissue ; pathology ; Female ; Follow-Up Studies ; Humans ; Immunohistochemistry ; Male ; Membrane Proteins ; metabolism ; Metaplasia ; pathology ; Middle Aged ; Parotid Gland ; metabolism ; pathology ; surgery ; Parotid Neoplasms ; metabolism ; pathology ; surgery ; S100 Proteins ; metabolism

Adolescent ; Adult ; Aged ; China ; epidemiology ; Dust ; Female ; Humans ; Lung Diseases ; epidemiology ; prevention & control ; Male ; Middle Aged ; Occupational Diseases ; epidemiology ; prevention & control ; Pneumoconiosis ; prevention & control ; Young Adult

Adolescent ; Defibrillators, Implantable ; Female ; Humans ; Long QT Syndrome ; therapy