[Objective]To explore the cause of the early complications of Bryan cervical disc arthroplasty and summarize the prevention experience. [Methods]From June 2006 to December 2007,60 patients(33 males and27 females) with 73 levels underwent Bryan cervical disc placement.The average age was 43.3 years(range,33-54 years).[Results]One case complained of persistent arm pain because of incomplete decompression and was treated by dehydration,but the pain was still present.The average period of follow-up was 15.6 months,JOA scores were improved from 8.34?1.22 points to 16.11?1.01 points(P

Objective The purpose of this study was to explore the efficacy of low level laser treatment (LLLT) combined with initial periodontal therapy in treating chronic periodontits.Methods Eighteen patients with chronic periodontitis were randomly treated in a spit-mouth design with combination of laser (808 nm,80 mW) treatment with scaling and root planing (experimental) or with scaling and root planing alone (contol) after OHI and supragingival cleaning.Clinical parameters of sulcus bleeding index (SBI),periodontal probing depth (PD) and clinical attachment loss (CAL) of both sides were recorded and gingival crevicular fluid samples were collected at baseline and 1,4,12 weeks after the treatment.GCF samples were analyzed for b-FGF,IL-1β,IL-8 level using ELISA assay.Results For the change of SBI and PD,only SBI in the experimental group experienced significant reduction (P＜0.05) at 1 week compared with baseline (P＜0.05),and the reduction in both groups were statistically significant (P＜0.05) at 4 weeks.The same situation occurred while both experimental groups made more significant difference (P＜0.01) at 12 weeks.The reduction of SBI was obvious in both groups when the PD was more than 6 mm.For CAL,the experimental group showed signs of improvement (P＜0.05) at 4 weeks; both groups indicated improvement (P＜0.05),while the experimental was more significant (P＜0.01) at 12 weeks.For the levels of b-FGF,it showed steady rise after treatment in experimental group,while it went up to the baseline after falling in control group.At 12 weeks,there were statistical significance of differences between two groups (P＜0.05).The changes of IL-1β and IL-8,in the experimental group showed better results than that in control group,while the difference between two groups was not significant (P＞0.05).Conclusion LLLI can accelerate the healing of periodontal tissue by reducing the SBI,decreasing the PD,improving the CAL and increasing levels of b-FGF in the GCF of the patients.

Objective To observe the change of liver sinusoid in BALB/c mice infected with Schistosoma japonicum and explore its relationship between the degree of hepatic fibrosis and liver function. Methods A model was established in BALB/c mice infected with cercariae of Schistosoma japonicum. The liver specimens of mice were used for pathological examination with routine and picric acid-sirius red staining to know the degree of hepatic fibrosis by semi-quantity. The expressions of C-IV and vWF in liver sinusoid were assayed through the immuhistochemistry staining. The serum ALT and AST were detected by the automatic biochemistry analyzer, and the ultramicrostructure of the liver tissue was observed by a transmission electron microscope. Results The number and diameter of fenestrations in SEC reduced 4 weeks after the infection. The fenestrations were disappeared and the base membrane established 8 weeks after the infection. The expressions of C-IV and vWF in liver sinusoid and the degree of hepatic fibrosis increased with the time after infection. The levels of serum ALT and AST were not correlated with the infection time. Conclusions The phenotype alteration of the hepatic sinusoidal endothelium may be a vital issue triggering the liver fibrosis induced by Schistosoma japoncium.

Objective To evaluate regional blood flow occlusion (RBFO) in hepatectomy for liver neoplasms. Methods In this study, hepatic tumors were resected under RBFO in 28 cases (RBFO group), and under Springle's technique (control group) in 24 cases. The Child-Pugh classifications of liver function were grade A in all patients. The ligature ribbon was put in liver parenchyma around tumor to block the blood supply before resecting the tumor under guiding of B sounography in RBFO group. Anesthesia time, blood loss and transfusion, hospitalization, change of liver function and complications were compared between the two groups. Results Blood loss, anesthesia time and postoperative hospital stay were (340±92) ml, (98.4±25.0) min, ( 10.2±2.3 ) d in RBFO group and (620±124) ml, ( 135.8±47.5 ) min, (16.5±5.1 ) d, respectively, in control group, differences were all significant between the two groups (P <0.01, t = 9.222,9.328 and 5.875, respectively). On post-op day 2, ALT (U/L) was (378.4±35.2) vs. (539.2±115.4) (t=7.012, P<0.01), TBIL (37.5±11.2) vs. (51.8±29) mmol/L(t=8.818, P<0.01),PT (17.4±2.4) vs. (20.4±2.8) see(t =4.16, P<0.01) in RBFO group and control group, respectively. ALT was (57.1±15.5) vs. (98.1±21.2) U/L(t =8.039),TBIL (25.4±4) vs. (46.3±13) mmol/L(t=8.085),PT (13.2±4.2) vs. (15.7±2.2) see (t=2.621)on post-op day 7 respectively, again the differences were all significant between the two groups (all P<0.01). Conclusion Regional blood flow occlusion is an effective technique to control blood loss during hepatectomy for liver neoplasms.

Objective To understand the relationship between the dietary patterns and metabolic syndrome among elderly people in Zhejiang province,in order to provide scientific basis and reference for nutrition interventions.Methods Data were obtained from the 2010-2012 Chinese National Nutrition and Health Survey,and factor analysis was used to obtain food patterns among elderly people in Zhejiang province.The Logistic regression was used to explore the association of the food patterns with metabolic syndrome and its components.Results The intakes of bean products,nuts,fruits,eggs,and milk in elderly people were generally low,and the intakes of livestock and poultry meat,cooking oil and salt were relatively high.5 dietary patterns were derived by factor analysis:high-quality protein diet,mediterranean diet,condiments diet,traditional dietary pattern and western dietary pattern.The medical test results in 780 elderly people showed that the standardized prevalence of metabolic syndrome in the elderly was 28.8％,standardized central obesity rate was 41.2％,standardized hypertension rate was 50.3％ and standardized hyperglycemia rate was 39.5％.Logistic regression analysis showed that different dietary patterns had different effects on the metabolic syndrome and its components.Conclusions The prevalence rate of metabolic syndrome and the abnormal rates of its components are high in the elderly in Zhejiang.The intakes of fruits and milk are generally low,and intakes of livestock and poultry meat,cooking oil and salt are relatively high.The relationship between dietary patterns and MS or its components is complicated,so it is necessary to guide the elderly people to adopt reasonable diet by referring to the Diet Pagoda in order to reduce the risk of MS or its components.

Objective To generate the erythroid differentiation associated gene(EDAG) knockout mice and analyze their sensitivity to low dose radiation-induced damage.Methods Zinc finger nuclease technology ( ZFNs ) was used to produce the EDAG knockout mice.The low dose radiation-induced damage was evaluated by peripheral blood cell counts, DNA damage and colony formation of bone marrow cells.Wild-type and EDAG knockout mice were irradiated with 0.31 Gy/min X-ray, one minute per day for seven consecutive days, and the cumulative radiation dose was 2.17 Gy(n=7).The blood cell counts were measured by an automated hemocytometer.DNA damage was detected by immunofluorescence assay with a DNA damage marker p-H2A.x antibody (n=3).The colony formation ability of bone marrow cells was evaluated with a semi-solid culture medium(n=3).Results A model of EDAG knockout mice was established.Compared to wide type mice, white blood cell counts of EDAG knockout mice decreased significantly while the DNA damage marker p-H2A.x expression was increased on the third day after X-ray irradiation.The ability of colony-forming was reduced after 7 days of X-ray irradiation.Conclusion Our present study found that EDAG knockout mice are more sensitive to low dose radiation-induced damage as shown by decreased peripheral blood cells counts, reduced colony-forming ability of bone marrow cells, and increased DNA damage.These results suggest that EDAG knockout mice can serve as a powerful tool for evaluation of the biological effects of low-dose radiation damage.

ObjectiveTo observe the effect of Ornidazol on acute pericoronitis of wisdom tooth (PWT).Methods125 patients with PWT were randomly divided into the experiment group (63 cases, treated with Ornidazol) and control group (62 cases, treated with Metronidazole). The curative effect was observed when teeth extracted.ResultsThe effective rate of the experiment group was 95.2%, that of control group was 82.2%. There was a significant difference between two groups (P<0.05).ConclusionOrnidazol has an obvious effect on acute PWT.

A patent cardiac support system which is used as a bridge treatment for acute myocardial infarction has been designed and tested in vitro and in two dogs in vivo. This is an easy-to-use intelligentized pulsatile flow cardiopulmonary bypass device to replace the function of heart. The device consists of two identical pumps and perfusion chambers, a sensing and control system, a gas exchanger between the vein and pump, two one way valves between pump and veins or arteries. Arterial pressure and EKG feedback mechanisms are used for maintaining blood pressure and coordinating the pumping activity with heart contraction. A prototype of the device was built to perform hydraulic in vitro tests with aims of verifying the new device's pumping behavior. Functional evaluation of the device was carried out by using it in a model circuit made with standard CPB components plus a mock hydraulic pipeline. This system demonstrated easy manipulation, good controllability, and provided a 65+/-2ml x beat(-1) flow volume. There was a linear correlation between peak pressure value and pulsatile frequency. In the two in vivo experiments, the primary objective was to determine whether the device could work well in dog, whether physiologic pulsatility could be achieved and whether the blood supply to heart should be sufficient during asystole status by drugs. The results suggest that all the goals have been achieved.
Animals ; Cardiopulmonary Bypass ; Computer-Aided Design ; Dogs ; Equipment Design ; Heart-Assist Devices ; Materials Testing ; Myocardial Infarction ; therapy

Objective:To investigate the pahtogengesis and pathology of delayed xenograft rejection (DXR) after pig to rhesus monkey heart xenotransplantation.Methods:Heterotopic xenogeneic heart transplantation in the abdominal cavity was performed using piglet as donors.4 monkeys were used as recipients.Complete complement depletion was achieve in the recipients treated with repetitive doses of a high activity cobra venom factor (Y CVF).The recipients were immunosuppressed with a combination of cyclosporine A,cyclophosphamide and steroids.Sera were analyzed for C3,C4 levels and complement activity and anti pig endotheliocyte xenoantibody.The graft were examined histopathologically and immunohistochemically for C3,C4,C5b 9,IgM,IgG,necrosis factor alpha (TNF alpha),intercellular adhesion molecule 1 (ICAM 1),CD57 (NK cells),CD68 (macrophages),CD4 and CD8.Results:The xenografts survived 8,10,13,13 days respectively and all grafts occoured DXR.Venular thrombosis was outstanding feature within DXR xenografts,complicated with interstitial edma,local hemorrhage and myocardial necrosis,with mild to moderate cellular infiltration.The serum C3 levels and complement activity almost decreased to 0 from the day of transplantation due to Y CVF,the C4 level began to decrease 2 4 days before the cardic xenografts losing their function.The anti pig endotheliocyte xenoantibody also decreased after transplantation,and slightly increased during DXR,all rejected xenografts showed C3,C4,C5b 9,IgG and IgM deposits in different degree.Large numbers of macrophages (50% of total leukocytes) were found infiltrating the entire xenograft,a few natural killer cells (8%～10%),some of CD4+T cells (15%) and CD8+T cells (25%) were detcted also,up regulation of ICAM 1 on the graft endothelial cells and TNF alpha in the interstitial were demonstrated in the rejected heart.Conclusion:Both Humor and cell mediated immunologic reaction may play an important role in pahtogengesis of DXR. [

Objective: To investigate the association between dietary selenium intake and hypertension among Zhejiang residents . Methods: By multistage stratified random sampling method,four urban sites and two rural sites out of Zhejiang Province,four communities or villages out of each site,then 20 households out of each community or village were selected,and all the family members of the selected households were recruited as participants. The questionnaire of Chinese Health and Nutrition Survey was used to collect information about socio-demographic characteristics and dietary selenium intake. The blood pressure,blood lipid and other data were collected via physical examination. A multivariate logistic regression model was used to analyze the relationship between dietary selenium intake and hypertension . Results: A total of 1 222 participants with complete dietary selenium intake data were included for analysis. The number（%）of participants with selenium intake higher than the level of estimated average requirement（EAR）,between the levels of EAR and recommanded nutrient intake （RNI）,between the levels of RNI and upper intake（UI）and higher than the level of UI were 729 （59.66%）,151（12.36%）,341（27.91%）and 1（0.01%）,respectively. There were 283 （30.53%）patients with hypertension out of 927 participants examined. The mean amount of selenium intake in patients with hypertention was（43.06±20.96）μg/d,which was significantly lower than（51.56±30.06） μg/d in non-hypertention participants（P<0.05）. After adjusting for age,body mass index,total cholesterol,triglyceride and diabetes mellitus in the multivariate logistic regression model,dietary selenium intake significantly reduced the risk of hypertension（OR=0.985,95%CI：0.978-0.993） . Conclusion About 60% of residents in Zhejiang Province had lower dietary selenium intake than estimated average requirement. Higher selenium intake was associated with lower risk of hypertension.