The function of dendritic cells had disorder and imbalance,which could cause the defi-ciency of antitumor immune response and the low reactivity of tumor immunotherapy in cancer patients.Dendrite cells (DCs) were further regulated and activated by DC based tumor vaccine and in order to enhance the antitumor immune response that can enhance the ability of scavenging for tumor patients.The dendritic cell-based immunotherapy against tumor has been developed for almost two decades,the DC vaccines can induce specific antitumor immune response and with few side effects in phase Ⅰ / Ⅱ of clinical studies,now some have entered into phase llⅢ of clinical trials.The application of DC vaccines partially benefits the tumor patients,and prolongs the survival of the patients.In this article,the original dendritic cell vaccine basis for a variety of technical improving and changing of strategy to develop the second generation dendritic cell vaccines were reviewed systematically.

Objective To evaluate the clinical diagnostic role of dental computed tomography (CT) and three-dimensional reconstruction (3DR) compared with conventional dental periapical radiography (DPR) in the diagnosis of molar furcation involvement (FI). Methods Dental CT and 3DR were performed about a maxillary first molar and its alveolar bone diagnosed as FI II? by conventional probe technique, and the images were compared with that of DPR. Results The images of dental CT scans and 3DR showed not only the area, type and quantity of periodontal destruction, but also the complex stereoscopic anatomical vision and ambient spatial relationship around the molar. Especially, the images displayed the alveolar destructions of the dental buccal and palate site that could not always be demonstrated by DPR. The degree of the molar FI was defined as III? in fact. Conclusion Dental CT and 3DR have many superiorities and value, which can not be replaced by DPR, in the clinical diagnosis and prognostic judgment of molar furcation involvement.

Purpose This study examined the effect of pre-exercise low and high glycemic index (GI) carbohydrate (CHO) meals on running performance. Methods Eight endurance-trained male runners completed two trials that were separated by at least seven days in a counterbalanced design. Two hours before the run and after an overnight fast, each subject consumed an isocaloric meal containing either low (GI = 37, LGI) or high (GI = 77, HGI) GI CHO foods that provided 1.5 g CHO(kg -1 body mass in random order. Each trial consisted of a 21km performance run on a level treadmill. The subjects were required to run at 70% VO 2max during the first 5km of the run. They then completed the remaining 16km as fast as possible. Results All of the subjects achieved a faster performance time after the consumption of the LGI meal (LGI vs HGI: 98 7? 2 min vs 101 5?2 min, P

Objective To assess the value of exercise treadmill testing (bruce protocol) in diagnosing early atherosclerotic lesions of the lower limb. Methods Between March and September 2008, 173 outpatients with high risks of peripheral arterial disease (PAD) were enrolled randomly from the cardiology clinic of Chinese PLA General Hospital. The patients were subjected to exercise treadmill testing (Bruce protocol) and ankle-brachial index (ABI) determination, as well as lower limb artery ultrasonography within one week. Using ultrasonic findings as diagnostic criteria, the diagnostic sensitivity, specificity, positive likelihood ratio and negative likelihood ratio of exercise treadmill testing for early atherosclerotic lesions of the lower limb were analyzed, and the diagnostic value of exercise treadmill testing was assessed using the ROC curve. Results After exercise, ABI decrement (R value) increased in subjects with high risks for PAD with atherosclerotic lesions of the lower limb aggravating. Using the presence of large atherosclerotic plaques (area > 20 mm2 ), atherosclerotic plaques and atherosclerotic lesions in lower limb arteries as positive diagnostic criteria, the area under curve of ROC was 0. 80 (95% CI: 0.72-0.88), 0.78 (95% CI: 0.71-0.85) and 0. 60 (95% CI: 0.44-0.76), respectively. Using the presence of large atherosclerotic plaques in lower extremities as positive diagnosis, R value was 0.80, with a sensitivity of 54. 0%, a specificity of 96. 7%, a LR+ of 16. 4, and a LR- of 0. 58, meanwhile, R value was 0. 85, with a sensitivity of 70.0%, a specificity of 91.9%, a LR + of 8.64, and a LR- of 0.33. Conclusions Exercise treadmill testing (Bruce protocol) in combination with ABI determination is a safe, accurate, objective tool for detecting early atherosclerotic lesions of the lower limb. Immediately after exercise, 0.85 is the cut-off R value appropriate for diagnosing large atherosclerotic plaques of the lower limb (area > 20 mm2).

BACKGROUND:The tensile and stress-relaxation mechanical properties of sciatic nerve injury after repaired with autologous nerve and poly(lactic acid-glycolic acid) (PLGA) scaffold are rarely reported. OBJECTIVE:To analyze the tensile and stress relaxation characteristics of sciatic nerve injury after the transplantation of autologous nerve and PLGA scaffold. METHODS:Sixty sciatic nerves were extracted from the fresh cadavers dead within 24 hours, processed into 35 mm samples, and were then randomly divided into three groups. The nerve samples in control group received no intervention;the nerves in artificial and autologous groups were modeled into 20 mm defects, followed by repaired with PLGA scaffold and autologous nerve, respectively. Afterwards, the tension and stress-relaxation tests were performed in each group. RESULTS AND CONCLUSION:The stress in each group descended fast at the first 600 seconds, then descended slowly and was closed to the horizontal level until 7200 seconds, and the stress-relaxation curves in each group were in logarithmic decrease. The order of the elastic limit load, elastic limit stress, maximum load, maximum stress, elastic limit strain and maximum strain during tension was as follows:control group>artificial group>autologous group (P<0.05). Our results indicate that the PLGA scaffold holds good tension and stress-relaxation properties, which meets the mechanical requirements of the biomaterials used for sciatic nerve repair.

Objective To investigate the effects of ischemic postconditioning (Post) on myocardial cell apoptosis and expres- sion of Bcl-2 and Bax protein during ischemia/reperfusion period in rabbits.Methods Eighteen rabbits were randomly allocated to three groups (6 in each group),sham operation (group S),ischemia/reperfusion group(group IR) and ischemic postconditioning group(group Post).Group IR and group Post were subjected to 15 minutes of left anterior descending coronary artery occlusion followed for 30 minutes of reperfusion.Ischemic postconditioning was achieved by three 30 seconds cycles of reperfusion,each followed by 30 seconds ischemia.Cardiomyocyte apoptosis were determined by in situ TDT-mediated dUTP nick end labeling (TUNEL) and DNA electrophoresis.The expression of Bcl-2 and Bax proteins in apoptotic myocardial cells were detected by immunohistochemistry sepa- rately.Results Compared with group IR,apoptotic index was significantly reduced in group Post [(28.06?2.92) % vs.(55.70? 13.96)%,P

BACKGROUND:Deep vein thrombosis is a common postoperative complication after spinal surgery in clinical department of neurosurgery anddepartment of orthopedics. Deep vein thrombosis is mostly related to vein intima injury, stasis and activation of blood coagulation factor. Early effective prediction can effectively avoid the adverse effects on the prognosis of patients with deep vein thrombosis. D-dimer used in the prediction of deep venous thrombosis has high sensitivity and specificity, andcan be used as a sensitive predictor for deep vein thrombosis. OBJECTIVE:To explore the relationship between plasma D-dimer mass concentration and deep vein thrombosis after spinal surgery. METHODS:A total of 83 patients treated with spinal surgery colected fromDepartment of Neurosurgery, First Affiliated Hospital of Xinjiang Medical University from April 2014 to August 2015 were retrospectively analyzed. They were divided into two groups according to postoperative plasma D-dimer mass concentration:D-dimer positive group (n=48) and D-dimer negative group (n=35). We monitored D-dimer mass concentration in both groups preoperatively and postoperatively 1, 3, 5, 9 and 14 days, and analyzed the relationship between D-dimer mass concentration and deep vein thrombosis. RESULTS AND CONCLUSION:(1) No significant difference in D-dimer mass concentration was determined between the two groups (P> 0.05). D-dimer mass concentration was significantly higher in the D-dimer positive group than in the D-dimer negative group 1, 3, 5, 9, and 14 days postoperatively (P<0.05). (2) After operation, plasma D-dimer of 28 cases was positive, with persistent increasing. Double lower limb deep vein color Doppler ultrasound demonstrated that seven patients experienced deep vein thrombosis and four patients suffered from pulmonary embolism in D-dimer positive group. There was no deep vein thrombosis and pulmonary embolism in the D-dimer negative group. (3) These results indicate that positive D-dimer concentration of patientsafter spinal surgery suggests the possibility of deep vein thrombosis. If the concentration of D-dimer is persistently high, we should highly alert to the occurrence of deep vein thrombosis.

Objective To investigate the correlation of PICC tip position and weight gaining in very low birth weight infants.Methods We performed a retrospective study using chest X-ray films of very low birth weight infants in NICU who had PICCs inserted in a tertiary hospital.We recorded the tip positions on plain radiographs and calculated the position change,and calculated weight gaining ratio.Spearman regression model was used to analyze the relationship between tip position migration and weight gaining ratio.Results A total of 57 cases of very low birth weight infants were included,containing 246 X-ray films.On the first day of taking X-ray,weight was 0.6-1.46 (1.06±0.25) kg,the median and interquartile spacing are 5(3,7)d.The last time of taking X-ray was(24.0±9.1) dafter PICC placement;weight gaining ratio was 11.8％～114.8％,the median and interquartile spacing are 41.5％ (27.1％,65.3％).All PICCs tip position changed,75％ of which migrated more than 2 vertebrae,50％ of which migrated 3 vertebrae,and the median and interquartile spacing are 3 (1.8,3.5) vertebrae.The distances of tip migration were correlated with weight gaining ratio.With an approximate 2,3 and 4 vertebrae of PICC tip migration,the corresponding weight gaining ratio was about 40％,70％ and 100％.The correlation coefficient between PICC tip position migration and weight gaining ratio was-0.7(P＜0.01),but there was difference in different insertion sites.Conclusion PICC tip position is greatly influenced by weight gaining among very low birth weight infants.By considering the initial placement position,the crucial moment to assess catheter location is at 40％ and 70％ weight gaining ratio.After 100％ weight gaining,PICCs should be removed or replaced.PICCs can easily be affected by bone growth and limb movement,require higher frequency of catheter localization.

Objective To investigate the diagnosis and treatment of idiopathicgranulomatous mastitis.MethodsThis study was to retrospectively review the clinical presentation,radiological investigation,histopathological features,treatment and outcome of idiopatbic granulomatoos mastitis of women presenting to Xuanwu Hospital between January 2002 and June 2010.ResultsTwenty-four patients with a mean age of 34.5 years presented with a diagnosis of idiopathic granulomatous mastitis.Patients presented with a palpable breast lump,breast abscess,fistula formation in different periods of the disease; the role of radiological imagings was found to be limited in differentiating idiopathic granulomatous mastitis from other inflammatory and maliguant conditions of the breast.All patients underwent a surgical procedure as the main treatment; in the form of excision or incision and drainage of the breast lesions. Mean follow-up was 47.38 ( range 6-96 ) months with recurrence in 3(12.5％) patients.ConclusionsIdiopathic granulomatous mastitis presents clinically with a palpable breast lump.The diagnosis is often only made histopathologically after surgical excision or core biopsy.Wide excision of the lesions or incision and drainage of the lesion are the main treatment modalities.

Objective To investigate the influencing factors for post-discharge treatment compliance of patients with multidrug-resistant tuberculosis (MDR-TB).Methods MDR-TB patients who were hospitalized in a tubercu-losis hospital between November 2011 and January 2013 were chosen,post-discharge follow-up was conducted regu-larly through telephone call.Medicine-taking and re-examination of patients was inquired,factors influencing pa-tients’treatment compliance were analyzed.Results 299 patients were included in the study,the total treatment compliance rate was 81 .94% (n=245);249(83.28%)patients regularly took medicine,50(16.72%)didn’t regu-larly take medicine;254 (84.95%)were re-examined on time,45 (15.05%)were not re-examined on time;37 (12.37%)discontinued treatment,260 (86.96%)continuously treated till the survey deadline.Univariate analysis revealed that treatment compliance (including regular medication rate,timely re-examination rate,interrupted treat-ment rate,and total compliance rate)was significantly different among MDR-TB patients of different ages,education levels,treatment time,and with or without adverse reactions(all P <0.05 ).Logistic regression analysis revealed that treatment compliance of MDR-TB patients was negatively correlated with treatment time(β=-1 .47,Wald χ2=24.28,P <0.05)and adverse reactions(β=-2.02,Waldχ2 =24.24,P <0.05 ),while positively correlated with education levels(β=0.79,Wald χ2 =6.50,p <0.05 ).Conclusion Prolonged treatment time and adverse reactions can reduce the treatment compliance of MDR-TB patients,the higher education levels of MDR-TB patients have, the better treatment compliance they implement.