SV40 large tumor antigen(Tag) expression was investigated by immunoprecipitation followed by silver staining and Western blot in 65 cases of human brain tumors and 8 cases of normal brain tissues, Tag P53 and Tag PRb complexes were screened respectively in 18 and 15 Tag positive tumor tissues. SV40 Tag was found in ependymomas, choroid plexus papillomas, pituitary adenomas, astrocytomas, meningiomas, glioblastomas multiforme and medulloblastomas, whereas 8 normal brain tissues were all negative for Tag. Tag P53 and Tag PRb complexs were detected respectively in Tag positive tumors. The results indicated that SV40 is associated with human brain tumori genesis, and the in activation of P53 and PRb due to the formation of Tag P53 and Tag PRb complexes is possibly an important mechanism in the etiopathogenesis of human brain tumors.

Objective To evaluate the significance to detect the Ryanodine receptor (RyR) antibody in the sera of myasthenia gravis (MG) patients.Methods Sarcoplasmic reticulum abound with RyR was extracted by centrifugation,and levels of antibodies in 66 MG patients with thymoma (MGT),98 non-thymoma MG (NTMG) patients,50 non-myasthenia gravis (NMG) patients and 123 normal persons were examined by ELISA-RyR method.Results RyR antibody positive rate of MGT was the highest among MGT,NTMG and NMG groups ( P 0.05).Ages,clinical scores and levels of acetycholine receptor antibodies of patients with RyR antibody positive sera were higher than those with RyR antibody negative sera ( P

Objective To evaluate the preventive effect of BCG-PSN on respiratory infection of patients with chronic obstructive pulmonary disease.Methods 48 cases with COPD were randomly divided into two groups:the BCG-PSN group and the control group.The BCG-PSN group received BCG-PSN,0 5mg,im,twice a week for 18 times injection in addition to the routine therapy,and the control group only received routine therapy.Both groups were followed up every two weeks for six months.The serum IgA,IgG,IgM levels were determined before and 4,24 weeks after the treatment.Results Cases of infection and their lasting days,infective rate in the BCG-PSN group were significantly lower than that of the control group(P

Objective:To determine whether heme oxygenase-2(HO-2) gene deletion can attenuate oxidative injury induced by free Fe2+. Methods:Stereotactic injection of 10 μl sterile FeCl2 (10 mmol/L) was made into the right striata of HO-2 knockout mice and wild-type mice. Brain edema severity was measured at 24 h. Cell viability, protein oxidation, and lipid oxidation of the basal ganglia were determined at 72 h. Western blot analysis was applied for heme oxygenase-1 (HO-1) measurement.Results: Brain water content significantly decreased in HO-2 knockout mice at 24 h compared with wild-type mice. Protein oxidation and lipid oxidation significantly decreased in HO-2 knockout mice at 72 h compared with wild-type mice, while the striatal cell viability increased significantly. HO-1 expression at baseline and 72 h was also similar to that in wild-type mice. Conclusion:These results show that HO-2 gene deletion can protect basal ganalia cells from free Fe2+ -mediated oxidative stress injury,suggesting that selective inhibition of HO-2 may have a protective effect on brain oxidative injury.

Adolescent ; Endoscopy ; Ethmoid Sinus ; Frontal Sinus ; surgery ; Humans ; Male ; Osteoma ; surgery ; Otorhinolaryngologic Surgical Procedures ; methods ; Paranasal Sinus Neoplasms ; surgery

Cerebral Infarction ; drug therapy ; etiology ; Female ; Humans ; Infant, Newborn ; Intracranial Hemorrhages ; drug therapy ; etiology ; Male ; Vitamin K Deficiency ; complications ; drug therapy

Asthma ; physiopathology ; Child ; Female ; Humans ; Male ; Maximal Expiratory Flow-Volume Curves ; Oscillometry ; methods ; Pulmonary Disease, Chronic Obstructive ; physiopathology ; Respiratory Function Tests

Adenocarcinoma ; metabolism ; pathology ; Adult ; Aged ; Carcinoma, Non-Small-Cell Lung ; metabolism ; pathology ; Carcinoma, Squamous Cell ; metabolism ; pathology ; Female ; Humans ; Immunohistochemistry ; Lung ; chemistry ; pathology ; Lung Neoplasms ; metabolism ; pathology ; Male ; Middle Aged ; Oxidoreductases ; metabolism ; Sex Factors ; Smoking ; Tumor Suppressor Proteins ; metabolism ; WW Domain-Containing Oxidoreductase

Angiotensin II ; pharmacology ; Cells, Cultured ; Focal Adhesion Protein-Tyrosine Kinases ; metabolism ; Humans ; Myocytes, Smooth Muscle ; cytology ; Pulmonary Artery ; cytology

Animals ; Electrical Synapses ; Male ; Membrane Potentials ; physiology ; Neurons ; physiology ; Parietal Lobe ; cytology ; Patch-Clamp Techniques ; Rats ; Rats, Wistar