By integrating various research organs and setting up a research center, our hospital has been able to pool its entire research power and undertake high-level research projects. Thus it has succeeded in sharing research resources and made marked achievements.

CT data regarding PUMCⅡ d2 adolescent idiopathic scoliosis obtained from one female patient were input into modeling software minics 11.11 to obtain medical simulation model.Then finite element analysis models of AIS patients (T1-S) were created by introducing simulation models into software abaqus 6.7.Finite element models of T6 11 segments were corrected by 5 different correction methods:simple concave bracing,simple convex pressurization,concave distraction and convex compression simultaneously,concave distraction prior to convex compression and concave distraction after convex pressurization.Abaqus software was used to simulate correction of scoliosis with vertebral arch pedicle screw by loading 50 N,100 N,and 200 N distraction forces on the concave side pedicles of the end vertebrae T6 and T11.The displacement of vertebrae T6 in Y-axis (sagittal plane) and Z-axis (coronal plane),which respectively represented the correction effects of kyphosis and scoliosis,was compared between prior to and after correction.Simple concave distraction provided better outcomes in terms of displacement of T6 in Z-axis than the remaining four methods (P ＜ 0.01).Concave distraction and convex compression simultaneously,concave distraction prior to convex pressurization and concave distraction after convex compression produced identical displacements of T6 in Y-axis,which were all better than simple concave distraction (P＜ 0.01).The present findings imply that for curative effects of five methods on correction of scoliosis in the coronal plane:simple concave distraction＞ concave distraction and convex compression simultaneously = concave distraction prior to convex compressio= concave distraction after convex compression ＞ simple convex pressurization;for curative effects of five methods on correction of kyphosis in the sagittal plane:simple convex compression ＞ concave distraction and convex compression simultaneously = concave distraction prior to convex compression= concave distraction after convex compression＞ simple concave bracing.Simple concave distraction could not produce obvious corrective effects on kyphosis rather than lead to worsened kyphosis to some extent.Simple convex compression could not produce obvious corrective effects on scoliosis rather than result in aggravated scoliosis to some extent.

Objective To evaluate the effect of Budesonide combined with Poractant Alfa(pulmonary surfactants,PS) on preventing the bronchopulmonary dysplasia (BPD) in preterm infants.Methods One hundred and twenty preterm infants 6 hours after birth(gestational ages≤32 weeks and birth weights ≤1500 g)admitted to the Department of Newborn Medicine,the Affiliated Hospital of Southeast Medical University from October 2013 to February 2015 were randomly divided into 4 group(30 cases in each group).Group A was a control group,group B was neonatal respiratory distress syndrome(NRDS) group,group C was NRDS with PS group,and group D was NRDS with PS and Budesonide group.Thirty-two-week preterms without other diseases and without uptaking oxygen within 48 h were assigned as group A.Group B were treated by continuous uptaking oxygen with continuous positive airway pressure(CPAP) (oxygen uptaken lasting more than 48 h and oxygen concentrations more than 40％).Group C were treated with 100 mg/kg PS within 48 h on the basis of group B.Group D were treated with 0.25 mg/kg Budesonide suspension for inhalation on the basis of group C.The pH value,partial pressure of oxygen [pa(O2)],partial pressure of carbon dioxide [pa(CO2)] in the blood gas analysis were all detected in all groups before treatment,1,6,12,24 and 48 hours after using drug,respectively.All groups were also observed for whether to use respirator assisted ventilation,the duration of high oxygen use,the total time of uptaking oxygen,the rate of using PS again,the rate of BPD,the total hospitalization days and the adverse effects.The adverse effects included high blood pressure,high blood sugar,necrotizing enterocolitis and the incidence of nosocomial infection.Results Compared with group B,the pH value at 1 and 6 hours after using drugs,the pa(O2) and pa(CO2) at 1,6 and 12 hours after using drugs were improved obviously in the group C,and the differences were statistically significant (all P＜0.01).Compared with group B,the above indicators were improved more obvious in group D,and the differences were statistically significant (all P＜0.01).Moreover,compared with the group B,the oxygen inhalation duration,the rate of having a respirator assisted ventilation and using PS again,and the incidence of BPD were obviously decreased in other groups,the differences were statistically significant (all P＜0.05).The incidence of BPD in group D was less than that of group C,and the differences were statistically significant (3.33％ vs 10.00％,x2=4.00,P=0.046).The total oxygen time and the rate of adverse effects of each group were similar.The differences were not statistically significant (all P＞0.05).Conclusions Budesonide combined with Poractant Alfa can prevent BPD in preterm infants.Its effect is better than the simple use of Poractant Alfa,and the rate of adverse effects are not increased significantly.

Objective To explore the mechanism for the increase in reactive oxygen species regulated by p47phox of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase subunit in peripheral blood mononuclear cells (PBMCs) after oxygen therapy in premature infants.Methods According to different volume fractions of oxygen,premature infants less than 32 weeks were divided into 3 groups:fractional concentration of inspired oxygen (FiO2) ＜ 30％ was low concentration oxygen group,FiO2 between 30％ and 40％ as middle concentration oxygen group,and FiO2 ＞ 40％ as high concentration oxygen group.Premature infants less than 32 weeks without oxygen was control group.After 48 h,3 mL blood was collected via radial artery from each group,PBMCs and serum were separated.Then intracellular reactive oxygen species (ROS) by confocal laser scanning microscopy,malondialdehyde (MDA) within serum by thiobarbituric acid colorimetric,and the location and activation rate of p47phox through immunofluorescence.Results After premature infants were exposed to oxygen,as the oxygen volume fraction was increasing,ROS and MDA gradually rised.More PBMCs with p47phox translocated to membrane,then the translocation rate of p47phox also increased.Compared with the control group,ROS were significantly higher(q =4.48,6.5,16.22,all P ＜ 0.05) among the other 3 groups ; MDA significantly increased as well(q =5.08,8.22,12.76,all P ＜ 0.05) ; the activation rate of p47phox also had significant differences (x2 =134.008,P ＜ 0.05);compared with the middle concentration oxygen group,the high concentration oxygen group had higher ROS and MDA(q =15.03,4.53,all P ＜ 0.05) ; the activation rate of p47phox increased significantly(x2 =19.26,P ＜ 0.05).Conclusions After oxygen exposure,p47phox translocated to membrane may regulate the NADPH oxidase-derived ROS increase in extremely premature infants.

Objective To explore the effects of endoplasmic reticulum (ER) stress in the hyperoxia-induced lung injury in premature rats. Methods Forty-eight premature Wistar rats were randomized into two groups 12 hours after birth:hyperoxia group (n=24) inhaled 95%oxygen and control group (n=24) inhaled air. Eight rats were sacriifced in each group on day 1, 3, 7 after the treatment and the left lungs were embedded. The pathological changes in the HE stained sections of lung tissues were observed. The expressions of ER related protein ERp57 and c/EBP homologous protein CHOP were detected by immuno histo-chemistry and the apoptosis of lung cells was detected by TUNEL analysis. Results The typical pathological characteristics of acute lung injury were observed in hyperoxia group. The expressions of ERp57 and CHOP were increased with the exposure time in hyperoxia group, and were signiifcantly higher than in control group (P<0.05). The apoptosis rate of lung cells in hyperoxia group was signiifcantly higher than in control group (P<0.01). There was signiifcant positive correlation between cell apoptosis index and expressions of Erp57 and c/EBP homogeneous protein. Conclusions ER stress initiated apoptosis participates and plays an important role in the process of hyperoxia-induced lung injury in premature rats.

Objective To assess the feasibility and outcomes of fractionated stereotactice radiation therapy(FSRT) for brain metastases more than 3 cm in diameter. Methods From September 1996 to July 2006,47 patients(34 male and 13 female)with brain metastases larger than 3 cm were treated with FSRT. The median age was 58(range,31-87) years old. Pathologic diagnosis was adenocarcinoma in 19 patients, squamacarcinoma in 7, small cell carcinoma in 7, adeno-squamacarcinoma in 3, melanoma in 2, poor differen-tiated carcinoma, clear cell carcinoma, transitional cell carcinoma each in 1, and unknown in 6. FSRT was delivered as initial treatment for 26 patients, and as salvage therapy for 21. The largest diameter of brain me-tastases was 3.1-6.0 cm(median, 3.8 cm). Planning target volume were 2.5-33.8 cm3(median, 9.4 cm3). The median dose of FSRT was 30(range,16-57)Gy in 5(range,2 - 11) fractions. The treatment for primary tumor was surgery in 23 patients, radiotherapy and/or chemotherapy in 22, and none in 2. Results The last follow up was in April 2008. All patients were followed up and 33 had follow up more than 5 years. The 1-,2- and 5-year local control rate was 49%, 44% and 44%, respectively. The median survival time was 11 months(range,0.5-88.0 months, 95% CI=8.1-13.8 months). The corresponding overall survival rate was 40%, 17% and 6%, respectively. There were 46 patients died by the last follow up,including 21 died from brain metastases, 17 died from extracranial progression, and 8 died from other causes. Conclusion FSRT is safe and beneficial for selected patients with brain metastases larger than 3 cm.

Objective To construct p66shc gene interfering lentivirus vectors recombination and transfect it to 293T cells ,RNA interfering was carried out to induce p66shc gene silence ,so as to provide basis for further study of the p66shc function .Methods Screening of three RNA targets which were named after p66shc‐shc1 ,p66shc‐shc2 ,p66shc‐shc3 ,cloned into the pLenR‐GPH vec‐tor ,which contained green fluorescent protein(GFP) and transformed into DH5αcells .The positive clone were picked out for right sequencing and transfected to 293T cells with pRsv‐REV ,pMDlg‐pRRE ,pMD2G .The expression of GFP in inverted fluorescence microscope confirmed the virus packaging success .Fluorescence quantitative PCR and Western blot technology were used to investi‐gate the expression of p66shc at the molecular and protein levels ,p66shc‐shc1 target of effective silencing p66shc gene was selected to prepare for subsequent tests .Results The shRNA lentivirus vector was constructed which could express p66shc and was trans‐fected into 293T cells successfully .Fluorescence quantitative PCR and Western blot technology were used to investigate p66shc gene silence by RNA interference .Conclusion The lentivirus RNAi vector of targeted expression p66shc could induce p66shc gene si‐lence at the molecular and protein levels after transfected into 293T cells by RNA interference .

Objective To investigate the clinical effect of mild hypothermia on neonatal bilirubin encephalopathy, and the value of 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography (PET)/CT and amplitude integrated electroencephalogram (aEEG) for diagnosis and evaluation of curative effect. Methods From May, 2013 to December, 2014, 29 newborns with bilirubin encephalopathy were divided into conventional group (n=15) and mild hypothermia group (n=14). The conventional group received conventional therapy, and the other group received mild hypothermia in addition. The aEEG and neuron-specific enolase (NSE) were measured before and after treatment, as well as the glucose metabolism rate with 18F-FDG PET/CT after treatment. Results The NSE was lower after treatment in both groups (t>9.670, P<0.001), and was lower in the mild hypothermia group than in the conventional group (F=46.146, P<0.001). After treatment, sleep-wake cycle (SWC), epileptiform activity and the degree of abnormality were obviously improved (P<0.05), and were better in the mild hypothermia group than in the conventional group (P<0.05). The cerebral glucose metabolism rate was significantly better in the mild hypo-thermia group than in the conventional group (t>2.943, P<0.01). The cerebral glucose metabolism rate was negatively correlated with aEEG and NSE (r>0.640, P<0.05). Conclusion Mild hypothermia therapy could further promote the energy metabolism of brain cells in neonatal bilirubin encephalopathy. 18F-FDG PET/CT and aEEG can be used for early diagnosis and therapeutic evaluation.

Objectives To explore the role of PKCβ/p66Shc oxidative stress signaling pathway in hyperoxia-induced apoptosis of alveolar epithelial cells A549. Methods A549 cells were cultured in vitro and divided randomly into control (incubated with 5%CO2), hyperoxia group (exposed to a mixture of 900 ml/L O2 and 50 ml/L CO2 at speed of 3 L/min for 10 mins, then cultured in a closed environment) and LY333531 group (treated with 10μmol/L of PKCβinhibitor LY333531 for 24h then induced with hyperoxia for 10 mins). The cellular morphology was observed under inverted microscope at 12, 24 and 48 h of treatment. The cell apoptosis was detected by lfow cytometry. Expression of PKCβ/Pin1/p66Shc/p66Shc-Ser36 were detected by immunohistochemistry after 24 h of treatment. Results Comparing to the control group, the cellular morphology of A549 in the hyperoxia group changed to spherical shapes and space between cells increased, the living cell count decreased and suspension cell increased. The living cell count in LY333531 group increased and suspension cell decreased than those in hyperoxia group but not reach the levels of the control group. The apoptosis rate of A549 cells and the expression of PKCβ/Pin1/p66Shc/p66Shc-Ser36 at 24 h were signiifcantly increased in the hyperoxia group than those in the control group, while the apoptosis rate and the expression of PKCβ/Pin1/p66Shc/p66Shc-Ser36 were greatly decreased in the LY333531 group than those in the hyperoxia group (all P<0.01). Conclusions The expression of PKCβin A549 cells can be increased by the hyper-oxia induction but reduced by LY333531, and then the expressions of Pin1, p66Shc and p66Shc-Ser36 are reduced. Thus the re-duced apoptosis of A549 cells relieve the cell injury induced by hyperoxia.

Objective To investigate the fluoride content in drinking water as well as the current status of endemic fluorosis in 5 counties of Shandong Province,in order to provide a scientific basis for making prevention and control strategies.Methods According to the survey data of fluoride content in drinking water in Shandong Province between 2005 to 2007,an epidemiological investigation was carried out in Mudan,Jiaxiang,Wucheng,Pingdu and Boxing Counties from September to November 2013.The fluoride content in drinking water and urine and dental fluorosis of children aged 8 to 12 were investigated in 3-4 major survey villages selected in the five counties.The fluoride content in drinking water was detected by fluoride ion selective electrode method,and dental fluorosis was diagnosed by Deans method.Results Fifty-eight drinking water samples were investigated in 16 villages of the five counties.Water fluorine content in Wucheng,Mudan,Pingdu,Boxing and Jiaxiang counties was 4.14,3.84,1.83,1.33 and 0.43 mg/L,respectively.There were 4 counties' fluorine content exceeding the national standard (1.20 mg/L) except Jiaxiang County.The exceeding rate was 100％ in Wucheng and Mudan counties.Urine fluorine content of 320 children aged 8 to 12 in Wucheng,Mudan,Boxing,Pingdu and Jiaxiang counties was 4.51,4.62,1.82,1.30,1.01 mg/L respectively;the total detection rate of dental fluorosis of 574 children was 61.85％ (355/574),the rate of dental damage was 12.89％ (74/574),and dental fluorosis index was 1.27;the detection rate of dental fluorosis in Wucheng,Mudan,Boxing,Pingdu and Jiaxiang Counties was 90.18％ (101/112),97.73％ (86/88),62.22％ (84/135),54.90％ (28/51) and 29.79％ (56/188),respectively.Conclusions The exceeding rate of water fluorine content is very high in 5 counties of severe endenic fluorosis areas in Shandong Province.The urinary fluorine level of the population is still high and the prevalence of dental fluorosis of children is high.Endemic fluorosis in Shandong Province has not yet been effectively controlled,control situation is still grim.