Objective To investigate the effect of dexamethasone addition in block anesthesia before surgery on postoperative quality of life after extraction of impacted mandibular wisdom teeth. Methods Using a random number table, 120 cases of patients were divided into experimental and control groups, each group contains 60 cases whose mandibular wis?dom tooth will be extracted. Before the surgery, the experimental group patients perform local block anesthetic injection with 3 mL out of 5 mL mixture of 2%lidocaine 4 mL+dexamethasone 1 mL (5 mg) to block nerve. The control group was given block anesthesia of inferior alveolar nerve with 3 mL of 2%lidocaine block anesthesia alone. Improved postoperative symp?toms severity scale (PoSSe) was used to evaluate patients’quality of life after tooth extraction comprehensively and quantita?tively by analysis and comparison of the two sets of scores. Results The experimental group’s PoSSe scores were 18.059 1 ± 13.210 9, which was lower compared with control group (27.819 3 ± 15.716 9). In experimental group, diet, language, swelling, pain and daily points were lower than the control group (P<0.05). Conclusion Topical application of dexamethasone in mandibular wisdom tooth extraction reduces postoperative adverse reactions in a certain degree and im?prove postoperative quality of life.

Objective To evaluate contrast-enhanced ultrasound (CEUS) for the diagnosis and follow-up of hepatocellular carcinoma ( HCC) patients after percutaneous radiofrequence ablation ( RFA). Methods The data of 46 HCC cases were reviewed in our study. Results of contrast enhanced computed tomography (CT) , ultrasound contrast agent sonography and grey ultrasound were compared with each other pre- and after percutaneous radiofrequence ablation. Results Contrast agent ultrasound imaging had the same value with CT in preoperative diagnosis of HCC, with postive likelihood ratio of 1.26 and 1.31, respectively,sensitivity of 97% and 91% and specificity of 23% and 31% respectively. For grey ultrasound the positive likelihood ratio was 0.99, sensitivity and specificity was 76% and 23% respectively. The sensitivity and specificity of contrast-enhanced ultrasound after percutaneous radiofrequence ablation was 60% and 90% respectively, and the postive likelihood ratio and negative likelihood ratio was 6. 18 and 0. 44 respectively. The difference was significant while compared with CT (P = 0. 012). All cases were followed-up from 1 to 9 months, and all were alive with recurrence found by contrast-enhanced ultrasound in 3 cases. Conclusions Contrast agent ultrasound imaging is sensitive and effective in the diagnosis of HCC and follow-up after percutaneous radiofrequence ablation.

Basal Ganglia Diseases ; chemically induced ; therapy ; Child ; Humans ; Lamivudine ; adverse effects ; Male ; Palliative Care ; Reverse Transcriptase Inhibitors ; adverse effects ; Treatment Outcome

Objective To clarify the inhibitory effect of low molecular weight chitosan(LMCTS)on hepatic fibrosis induced by carbon tetrachloride (CCl4 )in the rats, and to investigate its effect on the expression of Toll-like receptor-4(TLR4 )and to lay the foundation for the development of the clinical candidate drug of liver fibrosis. Methods 72 male Wistar rats were randomly divided into blank control group, CCl4 group (model group), glycyrrhizinate (DG)group,50,100 and 150 mg·kg-1 LMCTS groups (low,middle and high doses of LMCTS groups).In addition to blank control group,the rats in the remaining groups were given 40% CCl4-vegetable oil (1.75 mL·kg-1 ),2 times per week for 8 weeks,by intraperitoneal injection to establish the model of rat hepatic fibrosis.And the rats in blank control group were injected with the same amount of 100% vegetable oil agent. From the ninth week, the rats in DG and LMCTS groups were given DG and LMCTS by intragastric administration, 1 time/week for 4 weeks. Then all rats were sacrificed, the activities of serum glutamic acid aminotransferase (ALT),aspartate aminotransferase (AST)and alkaline phosphatase (ALP)were detected with ELISA kit;the pathological changes in liver tissue were observed under light microscope, and the TLR4 expressions were detected by RT-PCR and Western blotting method. Results The serum ALT, AST and ALP activities in middle and high doses of LMCTS groups were lower than those in model group (P<0.05).The serum ALT activity in middle dose of LMCTS group was lower than that in low dose of LMCTS group (P<0.05),but the activities of AST and ALP had no statistically significant change(P>0.05).There were statistically significant differences in the serum ALT, AST and ALP activities between high dose of LMCTS group and middle dose of LMCTS group (P<0.05).There were obvious hepatocyte steatosis,inflammatory cell infiltration,collagen fiber hyperplasia and hepatic lobule damage in the rats in model group.However,all the changes in liver tissue of the rats in LMCTS group were significantly reduced, especially in high dose group. The results of RT-PCR and Western blotting method showed that the expression of TLR4 was declined in LMCTS groups compared with model group (P<0.05,P<0.01),especially in high dose of LMCTS group,and there were statistically significant differences between different doses of LMCTS groups (P<0.05).Conclusion High dose of LMCTS can decrease the serum transaminase activity of liver fibrosis rats and improve liver function,and this process may be related to declining the expression of TLR4 .

Objective To investigate the clinical characteristics,treatment and prognosis of single-system Langerhans cell histiocytosis (LCH) in children.Methods A retrospective analysis was performed in single-system LCH patients registered between January 2006 and December 2012 in Beijing Children＇s Hospital Affiliated to Capital Medical University.The patients were divided into 2 groups:the bone involvement group and the other organ involvement group.The patients were assessed at 5 weeks,11 weeks,25 weeks,3 months,6 months,1 year and 3 years.The data were analyzed by using SPSS 17.0 software.Results A total of 112 patients (66 boys and 4,6 girls) with a median age of 5 years at diagnosis of LCH were analyzed.The most frequently affected organ was the bones(91 cases,81.3％),followed by skin(15 cases,13.4％).Few patients (27.6％) had acentral nervous system risk lesion,who were younger than those with other bone lesion(2.5 years vs 6.6 years).Patients with bone lesions were diagnosed at a significantly older age than other patients(5.6 years vs 1.5 years) (P ＜ 0.01).All patients received chemotherapy that included Prednisone and Vinblastine for 25 weeks.Twenty-five patients (22.3 ％) showed reactivation.Of these,4 patients exhibited reactivation in the pituitary.Three-year overall survival rate was expected to reach 100％,and no-event survival was expected at (73.22 ± 4.47) ％.Age of less than 2 years old was the factor of reactivation (P =0.033);sex,organ involvement and member of bone involved were not related with reactivation (P =0.679,0.142,0.639).Conclusions The bones were the frequent involvement organ in single-system LCH patients.These patients have a good prognosis.The rate of reactivation of single system-LCH can be decreased by chemotherapy.

Objective To investigate the value of Fluorine-18 fluorodeoxyglucose positron emission tomography (~(18)F-FDG-PET)in staging and detecting residual disease during follow-up of non-Hodgkin's lymphoma in children. Methods The results of~(18)F-FDG-PET of 88 podiatric NHL before and after chemotherapy was analyzed respectively.The results were compared with CT scans simultaneously.Results 67 cases were performed for initial staging.Of the 1072 anatomy regions were analyzed by PET and CT with concordalice of 88.62%regions(positive in 11.10%and negative in 77.52%1.Disconcordance were found in 11.38%regions(PET positive but CT negative in 6.8 1%,PET negative but CT positive in 4.57%).PET was significantly better than CT scan in the staging of podiatric NHL.35 scans were performed in the follow-up.The true residual disease positive rate of PET and CT were 87.50%and 57.14% respectively.The false positive rate of PET and CT were 12.50%and 50.00%respectively.Conclusion ~ (18)SF-FDG-PET imaging is of great value for the staging of the pediatric patients with NHL It's a useful technique to identify the residual disease,avoid unnecessary treatment and biopsy and Can predict eady relapse.

Objective To explore the feasibility of electromagnetic navigation for hepatic ducts exploration by choledochoscope based on a three-dimensional (3D) printing model.Methods The retrospective descriptive study was conducted.The clinical data of 1 patient with obstructive jaundice combined with secondary biliary tract dilation who was admitted to the Beijing Tsinghua Changgung Hospital in April 2016 were collected.Digital imaging and standardized format data of enhanced computed tomography (CT) scan were collected,3D reconstruction of liver and bile duct were done under a 3D printing model,and then a hollow model of bile duct was achieved.Choledochoscope with internal electromagnetic probe was inserted into the printed hepatic ducts.Four points of anatomical markers in left and right hepatic ducts and common hepatic duct were chosen as fiducial markers for calibration and registration.Results After registration,the scope can be tracked in main hepatic segmental bile ducts.The locations of choledochoscope matched precisely the navigation results.Conclusion Electromagnetic navigation may bring accurate tracking effectiveness for choledochoscopic examination.

Objective To investigate mechanisms underlying the prevention of experimental autoimmune encephalomyelitis (EAE) in mice by intraperitoneal infusion of myelin oligodendrocyte glycoprotein 35-55 (MOG35-55) (MOG i.p.).Methods C57BL/6 mice were immunized with MOG35-55 to establish the model of EAE and then were intraperitoneally injected daily with MOG35-55 or ovalbumin (OVA, served as control) from day 6 to day 16.EAE was evaluated daily using a general clinical scoring system and histological analysis.Numbers of lymphocytes in peripheral blood and central nervous system (CNS) were detected at different time points.Effects of MOG i.p.on the migration of MOG-T cells in vivo were analyzed by an adoptive transfer experiment.Maturation of splenic antigen-presenting cells (APCs) and migration of MOG-T cells in vitro were examined by fluorescence activated cell sorting (FACS) and a Transwell system, respectively.Results MOG i.p.protected the mice from development of EAE by blocking the lymphocyte recruitment to CNS.More effector T cells were trapped in the periphery of EAE and naive mice in adoptive transfer experiment after MOG i.p.treatment.MOG i.p.induced the maturation of splenic APCs and enhanced the expression of CD80, CD86 and major histocompatibility complex class Ⅱ (MHCⅡ) molecules.Mature APCs blocked the recruitment of effector T cells to CNS.Conclusion MOG i.p.protects mice from EAE by inducing the maturation of splenic APCs.

Objective To analyze the antioxidant activities of extracts from Scutellaria baicalensis Georgi. by different solvents, and to determine the contents of total flavonoids. Methods By employing colorimetric method, contents of total flavonoids in different extracts were determined. The free radical scavenging activity of each extract was measured by DPPH method. Results Different extracts from Scutellaria baicalensis Georgi. by different solvents were provided with DPPH free radical scavenging activities, of which the ethyl alcohol extracts were the highest in scavenging activities. In addition, total flavonoids content of ethyl alcohol extracts was significantly higher than that of others. Conclusion The antioxidant activity of extracts from Scutellaria baicalensis Georgi. was related to the content of total flavonoids in it.

ObjectiveTo explore the particular inner world of the children with attention deficit hyperactivity disorder (ADHD)with the sandplay therapy and the initial sandtray's clinical diagnosis role and value on the ADHD.MethodsThe differences of the initial sandtrays between 28 children with ADHD and 24 normal children were compared.Results 1.On the use of toys,the experimental group was significantly higher in transports ((5.04 ±6.60),(1.38 ±2.12),t=2.73) and lower in stones((0.00 ±0.00),(8.00 ± 12.33),t=-3.18).2.On the scene of sandtrays,the experimental group was significantly higher in the fight( x2 =12.96,P ＜ 0.01 ),dynamic scenes ( x2 =13.37,P ＜ 0.01 ).3.On the use of self-images,the experimental group was lower than the normal children,and the differences were significant ( x2 =4.75,P ＜ 0.05 ).4.There were no significant differences in the use of sand between two groups( x2 =3.46,P ＞ 0.05).ConclusionThe results show that the children with ADHD have significantly characteristics in sandtrays.Initial sandtray is valuable to be an aid to clinical diagnosis and intervention means.