Objective To explore the role of long-term enriched environment in promoting the recovery of motor and social function in mice after ischemic brain injury. Methods Sixteen adult male ICR mice underwent permanent middle cerebral artery occlusion (MCAO). The first day after operation, they were divided into enriched environment group (n=8) and standard condition group (n=8). The mice were tested with modified Neurological Severity Score (mNSS), rotarod test and smart cage 7, 14, 21, 28 days after modeling. Results The score of mNSS and the result of rotarod test improved more in the enriched environment group than in the standard condition group 28 days after MCAO (t>2.927, P<0.05). The occupancy time in the middle of smart cage was longer in the enriched environment group than in the stan-dard condition group 7 to 28 days after MCAO (t>2.480, P<0.05) in the general move test. There was a trend of being more interested in strange mice in the enriched environment group than in the standard condition group, but the difference was not statistically significant (P>0.05) in the social behavior test; however, the occupancy time in the middle of smart cage was longer in the enriched environment group than in the standard condition group 14 to 28 days after MCAO (t>3.472, P<0.01), and the velocity of moving was higher 14 days after MCAO (P<0.05). Conclusion Enriched environment could promote the recovery of motor function, somehow of social function, in mice af-ter ischemic brain injury.

Objective To investigate whether the combination of maintenance hemodialysis (MHD) with hemoperfusion (HP) could improve the left ventricular structure and function of MHD patients with resistant hypertension. Methods This study was a prospective, randomized, controlled clinical trial. 65 MHD patients with resistant hypertension of our hospital were enrolled and then randomly divided into Group HD+HP and Group HD. The follow-up study was 12 months. The major outcome measures were related to the cardiac structure and function, and the serum inflammatory factors. Results No statistical differences of related factors such as blood pressure and cardiac function was observed in HD group. The serum concentration of inflammatory factors was higher after one-year HD treatment alone. But the serum concentration of inflammatory related factors , blood pressure, cardiac function and related indexes were lower in HD + HP than in Group HD (P < 0.05);HD + HP group had higher ejection fraction (EF) and SV, which demonstrated the improved cardiac function (P < 0.05). Conclusions HD + HP was superior to HD in the treatment in alleviating cardiac after-load and improving the left ventricular structure and function of MHD patients with resistance hypertension.

Objective: To investigate the effect of human vascular endothelial growth factor on restenosis after angioplasty. Methods: A rabbit model of injured carotid artery was established using percutaneous transluminal angioplasty. The pcDNA3/hVEGF165（500 μg,n=12） and pcDNA3 （500 μg,n=12） were separately transfected into injured arterial wall with 30 min incubation. The carotid artery was imaged by arotic angiography at the end of week 2 and week 4. Pathology analysis and Northern blot analysis were performed for harvested injured artery segment. Results: Arotic angiography showed carotid artery diameter narrowness were obviously lessened at week 2 and week 4 in experimental group than that in control group; H-E stains showed lumina narrow ratio were obviously reduced at week 2 and week 4 in experimental group than that in control group［（9.58±1.35）% vs (31.72±1.72)%；(18.09±2.93)% vs (44.05±3.28)%， P<0.01 ］; By Northern blot analysis, the expression of hVEGF165mRNA in experimental group were upregulated than in contol group. Conclusion: pcDNA3/hVEGF165 can be transfected into smooth muscle cell and continue to secret bioactivity protein at least for 4 weeks; it can accelerate reendothelialization and prevent restenosis.

Objective To compare the level of Annexin Ⅱ in patients with systemic lupus erythematosus(SLE),diabetic nephropathy(DN),chronic glomerulonephritis and normal controls,and explorle the significance of the annexin Ⅱ in SLE.Methods Thirty-five cases of patients with SLE,ten cases of patients with DN,ten cases of patients with chronic glomerulonephritis were enrolled in this study,twenty cases of healthy controls were also enrolled.Circulating annexin Ⅱ in white blood cells was detected bv flow cytometry.Student's t test,variance analysis and Lineat correlation analysis were used for statistial analysis.Resuits Compared with healthy controls,the level of annexin Ⅱ in white blood cells in SLE patients (7.1±2.9)%and DN patients(8.0±3.7)%were significantly lower than that of the healthy controls(P<0.01,p<0.05).In the SLE group,the level of annexin Ⅱ of patients who had more active disease(SLEDAI≥9)decreased more thall those with less active disease(SLEDAI<9),(P<0.05).A positive correlation was found between annexin Ⅱ and serum albumin level(r:0.439,P<0.01),but negative correlation was found between annexin and urine protein/urine creatinine(r=-0.382,P<0.05),SLEDAI(r=-0.417,P<0.05),D-dimer(r=-0.336.p＜0.05) levels.Conclusion The level of annexin Ⅱ is decreased in patients with SLE,so it can renectthe abnormality of coagulation and fibrinolytic systems,and it may be used as a good indicator for prothrombotic status in SLE patients.It can be helpful to evaluatethe activity of the disease and the therapeutic efficacy.

Aim To evaluate neuroprotective effects of stearic acid on primarily cultured hippocampal neurons and to study the mechanism of neuroprotection afforded by stearic acid.Methods Primarily cultured hippocampal neurons were insulted by OGD(oxygen-glucose deprivation),H_2O_2,glutamate and NaN_3;MTT assay was utilized to evaluate cell viability;Inhibitors of PPAR?and PI-3K signal pathway were used to study mechanisms of neuroprotection of stearic acid.Results Compared with control neurons,A_(570) in MTT assay were increased significantly by stearic acid in hippocampal neurons insulted by OGD(oxygen-glucose deprivation),H_2O_2 and glutamate(P

In order to discover some sensitive parameters of eight diastolic function indexes and establish the discriminant equation, twenty-three patients with coronary heart disease (CAD) and eighteen normal adults were studied by radionuclide, Doppler and apexcardiography. The results showed that eight indexes were signicantly different between CAD and normal groups. The discriminant equation was: Z=0.21X1+23.86X2-22.88X3-0.18X4+2.83X5+ 2.06X6+66.86X7+1.66X8. The discriminant score was 42.99. The discriminant function was 100%. The contributive rates of eight indexes were Ev/Av, 1/3FF, A/E-O, PFR, DATI, EDC, IRT ;and l/3FFd from large to small value, respectively. It is concluded that Doppler Ev/Av is the most sensitive diastolic function index of CAD.

Objective To evaluate the performance of ELISA by detecting low quantitative HBsAg in serums.Methods 305 serum samples that the quantitation range was from 0.05 IU/ml to 9.99 IU/ml were collected,and then detected by ELISA. Results The rate of patients with low quantitation of HBsAg was 18.12% in patients with positive HBsAg.The total de-tected rate of ELISA was 87.87%,and the rate of 0.05~0.11,0.12~0.20,0.21 ~0.50,0.51 ~ 1.00,1.01~5.00 IU/ml and 5.01~9.99IU/ml were 36.00%,61.11%,78.38%,84.62%,99.11% and 100.00%,respectively.The differences were statistically significant between the detected rates of each group(χ2 =99.84,P =0.000).There was high correlation coeffi-cient between the results detected by ELISA and by CMIA(r = 0.874,P = 0.000).Conclusion The clinical laboratory should be careful to apply the method of ELISA to detect HBsAg for its missing detection in samples with low quantitation of HBsAg.

Objective To investigate the role of glycogen synthase kinase -3beta(GSK3β)on invasion and metastasis of human osteosarcoma cells .Methods Expression and phosphorylation of GSK 3βwere examined in osteosarcoma cell lines and tumor tissue from osteosarcoma patients by Western blot .The effects of small mole-cule GSK3βinhibitors on cell metastasis were detected by cell invasion assay and cell migration assay .Results Osteosarcoma cell lines showed increased GSK 3βexpression and abnormal activity regulation .In tumor tissue of patients with osteosarcoma metastasis and non -metastasis,GSK3βwere detected expression and abnormal activi-ty,especially in tumor tissue of the patients with osteosarcoma metastasis .Inhibition of GSK3βactivity resulted in inhibiting cells invasion and migration in osteosarcoma cell line .Conclusion In this research,we demonstrated that GSK3βencouraged osteosarcoma cells metastasis .The result will open up a potential target for clinical treat-ment of osteosarcoma .

Objective To detect DNA damage of peripheral blood lymphocytes in patients and family members of autosomal dominant polycystic kidney disease (ADPKD),and to study the effect of irradiation on genomic stability of lymphocytes. Methods Before and after 0.5 Gy radiation dose,single-cell gel electrophoresis (SCGE) was employed to analyze DNA damage of lymphocytes in 10 ADPKD patients (group A),3 members without clinical symptoms of a ADPKD family (group B) and 20 healthy control people (group C).The damage was estimated based on the content of DNA in tail (TDNA％) with comet analysis software (CASP). Results Both before and after irradiation,the TDNA％ (8.85％±0.14％,14.84％±0.77％) and the value-added (6.00％±0.77％) of TDNA％ of group A were significantly higher than those of group C (7.50％±0.37％,12.46％±0.26％,4.96％±0.44％) respectively.There were no significant differences between group B and group C or group A and group B.While 1 person in group B had higher TDNA％ as compared to group C both before and after irradiation. Conclusions The lymphocytes of ADPKD patients are more sensitive to ionizing radiation as compared to healthy people.The genomic instability in ADPKD patients or member of ADPKD family may trigger cystic formation in multi-organs when exposing to environmental agents. SCGE may provide a new approach to elucidate the pathogenesis and prognosis of ADPKD.

Objective To investigate the pathogenesis of renal lesion in Fechtner syndrome . Methods Pathological characteristics of kidney tissues from Fechtner syndrome patients were explored by HE staining, immunochemistry, immunofluorescence and electron microscopy . Results Immunochemistry analysis showed that non-muscle myosin heavy chain IIA (NMMHC-IIA)was expressed in podocytes of giomeruli and distal convoluted tube, and was faintly expressed in the brush border of proximal tube . Histological examination demonstrated glomerulosclerosis and decreased expression of NMMHC-IIA in abnormal podocytes . Through standard immunofluorecence, the expression of NMMHC-IIA in patient's podocyte was higher than that in normal pedocytes . The fusion of foot process and microvillus were detected by electron microscopy . Conclusion Abnormal NMMHC-IIA aggregates in the glomeruli podocyts and foot process fusion accompanied with appearance of microvillus leads to renal lesion in Fechtuer syndrome .