Objective To investigate the effect of Xuebijing injectiong on lipopolysaccharide(LPS)-induced apoptosis of CD4+CD25+regulatory T cells(Tregs)and immune function of effector T cells(Teff)in vitro.Method CD4+CD25+Tregs isolated from rat spleens were divided into the control group,anti-CD3/CD28 group,anti-CD3/CD28+LPS group,anti-CD3/CD28+Xuebijing injection group,and anti-CD3/CD28+LPS+Xuebijing injection group.The apoptosis rate and expression of forkhead/winged helix transcription factor p3 (Foxp3)and cytotoxic T-lymphocyte-associated antigen 4(CTLA-4)of CD4+CD25+Tregs were detected by flow cytometry(FCM),and the secretion of IL-10 of Tregs was measured by ELBA on day 3.CD4+CD25-T cells were co-cultured with CD4+CD25+Tregs(1:1)for 68 hours,proliferative activity of Teff was determined by MTT,and interleukin(IL)-2/sIL-2Rα levels were measured by ELISA.Results The apoptosis rate of CD4+CD25+Tregs in anti-CD3/CD28 group was 33.70± 3.06%,which was significantly higher than that in control group(12.84±0.84%).Also,apoptosis rate of CD4 CD25+Tregs in anti-CD3/CD28+LPS+Xuebijing injection group(45.13±2.70%)was much higher than that in anti-CD3/CD28+IPS group(29.41 ± 1.63%,P＜0.01).The expression of Foxp3 as well as CTLA-4,and the secretion of IL-10 were markedly decreased along with increases in the apoptosis rates.Compared with control group(54.48%),the mean inhibitory rate of Teff proliferative activity in response to Con A was significantly decreased in anti-CD3/CD28+Xuebijing injection group(31.26%,P＜0.05),and it was markedly decreased in anti-CD3/CD28+LPS+Xuebijing injection group comaped to anti-CD3/CD28+LPS group(P＜0.01).In addition,IL-2 levels in the supernatant of anti-CD3/CD28+Xuebijing injection group and anti-CD3/CD28+LPS+Xuebijing injection group were significantly higher than those of anti-CD3/CD28+IPS group(P＜0.01).Conclusions The inhibitory activity of CD4+CD25+Tregs on Teff appears to be upregulated by IPS stimulation in vitro,and Xuebijing injection could markedly enhance apoptosis of CD4+CD25+Tregs,thereby improving suppressive immune function of Teff.

Objective To investigate the effect of sasanquasaponin (SQS) on injury of endothelial cells induced by hypoxia-reoxygenation and neutrophil adhesion, and its possible mechanisms. Methods Human umbilical vein endothelial cells (HUVEC) were exposed to normoxia or hypoxia-reoxygenation in the absence or presence of SQS (10.0, 1.0, and 0.1 ?mol/L). Lactate dehydrogenase (LDH) activity was determined in cultured HUVEC supernatants. HUVEC survival rate, neutrophil adhesion rate, malondialdehyde (MDA) level superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) activities were measured. Neutrophil adhesion was assayed in additional HUVEC treated as above. Results The results showed that hypoxia-reoxygenation resulted in HUVEC injury and enhancement of neutrophil adhesion, with the increase in LDH activity, MDA level, and adhesion rate as well, conversely, with the decrease in activity of SOD and GSH-Px; SQS antagonized these changes in a concentration-dependent manner. Conclusion SQS may protect HUVEC against hypoxia-reoxygenation injury and its mechanism appeares to be related to anti-lipoperoxidization and anti-adhesion of white blood cell.

Objective To explore the clinical results of the arthroscopic acromioplasty in the rotator cuff repair.Methods Sixty-five patients (42 males and 23 females) to receive suture bridge repair under the arthroscopy between May 2012 and May 2014 were selected and randomly divided into an experimental group and a control group.The experimental group was given suture bridge repair with acromioplasty,while the control group underwent the suture bridge repair without acromioplasty.The time of operation was recorded.The range of motion (ROM) of the shoulder,the UCLA shoulder scoring system (ULCA) score,American orthopedic surgeon scoring system (ASES) score,the visual analogue scale (VAS) score and Constant score were observed 3 and 12 months after the operation.Results There were no significant differences in age,sex and the affected side between the two groups.Significant differences were found between the two groups in the duration of the operation (t=-18.5,P＜0.05).There were no significant differences in the ROM and the ULCA,ASES,VAS and constant scores of the shoulder 3 and 12 months after the operation.Conclusion No significant differences were found in the ROM and the shoulder function scoring between giving acromioplasty under the arthroscopy or not.However,the operation time of undergoing acromioplasty under the arthroscopy was longer.

Objective To evaluate the feasibility and establish the corresponding scanning plan through the clinical application of low-dose CT on diagnostic imaging for 111 AIDS patients with pnenmocystsis carinii pneumonia (PCP)and normal weight .Methods The thesis applied American GE(General Electric Company )FII double-row spiral CT scanner and the kV value is fixed to be 120 kV with the conventional dose (automatic mAs) and low-dose scanning applied respectively during the diagnosis .Meanwhile ,the low-dose scanning was carried out randomly in 50 mAs(50 mAs group) ,40 mAs(40 mAs group) and 30 mAs(30 mAs group) ,and then ,the iconographical imaging quality and radiation dose were analyzed ,the respective low-dose scanning plans was formulated at last .Results The high-quality film ratios for conventional close and 50 mAs group were 70 .3% and 62 .2% respectively ,and the good film ratios were 29 .7% and 37 .8% ,while no poor films occurred in both groups .The high-quality film ratios for conventional close and 40 mAs were 67 .6% and 56 .8% ,the the good film ratios were 32 .4% and 43 .2% and no poor films ,either .The high-quality film ratios for conventional close and 30 mAs were 70 .3% and 56 .8% ,the good were 29 .7% ,43 .2% and no poor films showed between both groups .From the results ,the consequential imaging films mainly show high and good quality ,all films meet the imaging diagnosis requirements and the difference are not statistically significant (P> 0 .05) .The radiation doses of conventional dose and low dose scanning (50 mAs ,40 mAs and 30 mAs groups) were 7 .6 mGy ,2 .6 mGy ,2 .1 mGy and 1 .5 mGy respectively , while the least radiation doses was for 30 mAs group and the corresponding dose is only 19 .8% of the original .The results from 111 patients applied conventional dose (automatic mAs) and low dose scanning all meet the imaging diagnosis requirements without any missed or erroneous diagnosis .Conclusion The chest low-dose CT scanning for AIDS patients with PCP and normal weight can fully meet the clinical diagnosis and treatment ,so it is practical and feasible .Meanwhile ,the conventional-dose scanning can be ap-plied at first and low-dose CT scanning later for reexamination to ensure the stability of image quality .For low-dose chest CT scan-ning ,the voltage fixed is 120 kV and the current 30 mAs .

Objective To investigate imaging characteristics of multistep hepatocarcinogenesis in cirrhotic livers on susceptibility-weighted imaging (SWI).Methods Seventy-three patients with 83 nodules in cirrhotic livers underwent hepatic MR imaging with SWI.Two radiologists reviewed MR images by consensus.Imaging characteristics of dysplastic nodules (DN),DN with malignant foci and hepatocellular carcinoma (HCC) were evaluated.Prussian blue staining was performed for semiquantification of hepatic iron content and above cirrhosis-associated nodules.Results Positive iron staining of background liver parenchyma was found in 69 of 73 patients and 4 HCC patients showed iron-negative staining of background liver parenchyma.Nine DNs appeared as hypointensity or isointensity with pathologically confirmed similar (n =7) or slightly decreased (n =2) iron deposition compared with background liver parenchyma.SWI detected 14 of 15 DNs with malignant foci.Seven patients appeared as homogeneous hyperintensity and 1 patient appeared as heterogeneous hyperintensity due to intratumoral hemorrhages.The remaining 6 patients demonstrated as nodule-in-nodule appearance with iron deposition in all background nodules,iron deposition with grade 1 in one internal HCC foci,and iron-free in 5 internal HCC foci.The remaining 50 patients with hepatic iron deposition had 55 HCC lesions.Three HCC lesions had iron deposition with grade 1 to 2 and the remaining 52 HCC lesions were pathologically iron-resistant.HCC appeared as hyperintensity compared with siderotic surrounding liver parenchyma.However,HCCs with diameter larger than 3 cm usually demonstrated heterogeneous hyperintensity due to intratumoral hemorrhage.Conclusions SWI could accurately demonstrate dynamic iron depletion on multistep hepatocarcinogenesis in cirrhotic livers.On SWI images,DNs appear as hypointensity due to siderosis and malignant nodules appear as hyperintensity due to iron depletion.

Objective To investigate the value of susceptibility?weighted imaging (SWI) for characterization of small hepatocellular carcinoma (sHCC) in cirrhotic livers. Methods Two hundred seventy?two patients suspiciousof HCC underwent conventional MR imaging and susceptibility?weighted imaging (SWI). Two hundred and five patients were excluded due to either size larger than 3.0 cm, no cirrhosis or HCC. Finally, a total of 84 hepatocellular nodules in 67 patients were included in this prospective study. There were 22 DNs in 12 cases, 8 DNs with HCC foci in 7 cases, and 54 overt HCCs in 48 cases. Two abdominal radiologists independently evaluated signal intensity and enhancing pattern using conventional MRI set and conventional MRI combining with SWI set. A five?point scale was performed to evaluate diagnostic confidence of HCC. Kappa analysis was performed to assess interobserver agreement of the two sets by two readers.The diagnostic performance and confidence level were compared for each image set,ROC was used to evaluate the diagnostic efficiency.Results Good interobserver agreement was identified with a Kappa value of 0.923 for conventional MRI set and 0.865 for conventional MRI combining with SWI set, respectively. The diagnostic sensitivity, specificity, accuracy, and area under the alternative?free response ROC (Az) were 80.6% and 80.6%, 81.8% and 77.3%, 81.0% and 79.8%, 0.804 and 0.782 using conventional MRI set, and 93.5%and 85.5%, 90.9%and 86.4%, 92.9%and 85.7%, 0.898 and 0.859 using conventional MRI combining with SWI set for reader 1 and reader 2, respectively.The diagnostic confidence level of conventional MRI combining with SWI set for diagnosis of HCC with less than 2 cm in size(n=36) was significantly higher than that of conventional MRI (reader 1, 3.86±0.47 vs 3.40±0.91;reader 2, 3.85±0.57 vs 3.41±0.92;t values were 3.733 and 2.468, P were 0.001 and 0.018).Conclusion SWI can provide additional valuable information and improve diagnostic performance for characterization of sHCC in cirrhotic livers.

BACKGROUND:Three dimensional finite element analysis is widely used in orthopedics, but research in the knee flexion movement is not much. OBJECTIVE:To analyze biomechanical properties of knee flexion using finite element analysis.METHODS:Three dimensional finite element models and models of knee flexion at 30 degrees, 60 degrees and 120 degrees were established. Femoral forward movement, femur inward movement, tibia internal rotation and tibia vara were analyzed at different flexion angles. RESULTS AND CONCLUSION:(1) When knee flexion was at 30 degrees, 60 degrees and 120 degrees, the femur had backward movement. The backward movement value was larger at 60 degrees than at 30 and 120 degrees (P<0.05). The backward movement value was larger at 120 degrees than at 30 degrees (P>0.05). (2) The femur had outward movement at 30 degrees, and inward movement at 120 degrees. The inward movement value was significantly larger at 120 degrees than at 30 and 60 degrees (P<0.05). No significant difference in outward movement was determined between the 30 and 60 degrees (P>0.05). (3) Tibia internal rotation was not significantly different at 30, 60 and 120 degrees of flexion (P>0.05). (4) Tibia vara was found at 30, 60 and 120 degrees of flexion, but the tibia vara was not obvious at 120 degrees. The tibia vara was maximum at 60 degrees, and significantly higher than that at 120 degrees (P<0.05). The tibia vara was larger at 30 degrees than at 120 degrees (P>0.05). (5) These findings verify that backward movement was most obvious at 60 degrees. Femur inward movement was most large at 120 degrees. Tibia internal rotation was noticeable at 30 and 120 degrees. Tibia vara was remarkable at 60 degrees.

Important/potential value of macrolides has been proved in the management of chronic respiratory diseases by increasing basic and clinical trials.Through three face-to-face discussions,10 experts examined important data and drafted this consensus related to macrolides:(1) mechanism of nonantiinfective effects;(2) clinical use in chronic respiratory diseases;(3) cautions of long-term use.The mechanism out of non-antiinfective effects includes anti-inflammatory effect,modifying airway secretion,immune-regulation related to antibacterial effect,corticoid saving effect and anti-viral effect.The efficacy of long-term use of low-dose macrolides is definitely confirmed in diffuse panbronchiolitis,chronic rhinosinusitis.It is considerably used in bronchiectasia,cystic fibrosis,severe asthma and chronic obstructive pulmonary disease.Further studies should be conducted in cryptogenic organizing pneumonia and respiratory viral infection.It should be paid attention to its possible adverse effects (including drug interactions,cardiac toxicity,ototoxicity and disturbance of intestinal flora) and drug resistance in long-term use.A Chinese consensus for non-antiinfective effects and clinical use of macrolides is developed for the first time,which aims to expand their rational use and the further research.

BACKGROUND:To reduce the amount of bleeding and the amount of hemoglobin after total knee replacement has been a key project in the clinical research in the division of bone and joint. Currently, ice therapy has been widely used in the clinic for tissue sweling and pain due to various physical and chemical factors. OBJECTIVE:To investigate the risk factors of postoperative hemoglobin after total knee replacement and discuss the effects of ice intervention. METHODS: 240 patients with osteoarthritis based on the random draw principles were equaly divided into the treatment group and the control group. The general information, disease status, diagnosis and treatment and prognosis of the two groups were investigated. Al patients were actively subjected to artificial total knee replacement. On the basis of the treatment in the control group, the treatment group received ice intervention at 2 hours after replacement for 7 consecutive days. RESULTS AND CONCLUSION:The postoperative hemoglobin decrease occurred in 34 patients, with the incidence of 14.2% among 240 patients at 7 days after replacement. Multivariate logistic regression analysis results showed that age, no ice treatment, body mass index were the main risk factors for hemoglobin decrease after total knee replacement (P < 0.05). Compared with the control group, the postoperative hemoglobin values of the treatment group were significantly higher (P < 0.05). Hemoglobin decrease values, total blood loss, blood transfusion rate, blood transfusion amount, and pain score at 3 and 7 days after replacement were significantly lower in the treatment group than in the control group (P < 0.05). The knee function excelent and good rate was 96.7% in the treatment group, and 95.8% in the control group, which showed no significant difference (P > 0.05). Results verify that clinical application of total knee replacement facilitated the knee recovery in patients with osteoarthritis, but hemoglobin decrease and bleeding existed. Active ice intervention can reduce the risk and relieve postoperative pain.

Objective To determine the effectiveness and safety of patients treated with stereotactic body radiotherapy ( SBRT ) - CyberKnife for small hepatocellular carcinoma. Methods A prospective analysis of treatment details and outcomes for 33 patients with small hepatocellular carcinoma treated by CyberKnife at CyberKnife center of Shanghai Changhai Hospital from June 2014 to December 2016 was presented. Patients were followed every 3 months. WHO modified response evaluation criteria in solid Tumors( mRECIST) was used to evaluate efficacy, Common Terminology Criteria for Adverse Events Version 4. 0(CTCAE 4. 0) to evaluate treatment response, Kaplan-Meier method to calculate survival rate and local control rate and plot survival curves. Results There were 33 patients, 33 targets included in the study at the date of the last follow-up. 18 lesions (54. 5%) showed complete remission response, 7 lesions (21. 2%) showed partial remission response, 5 lesions (15. 2%) showed stable, and 3 lesions (9. 1%) progressed. Response rate was 75. 8%, and disease control rate was 90. 9%. 1- and 2-year local control rate was 100% and 83. 6%, respectively. The median disease progression free survival ( DPFS) was 15. 0 months. Non irradiated liver volume more than 100 ml, prior AFP less than 100 ng/ml, post-treatment CTCAE less than grade 2 could improve overall survival ( OS ) . V5 was a factor in grades 2 -4 hepatic toxicity ( P=0. 015 ) . All patients tolerated the radiosurgery, with grade 1 and grade 2 fatigue, and the gastrointestinal reactions and liver injury was the main side effect. 1 patient with grade 3 liver damage relieved at 6 months after treatment and 1 patient with grade 4 liver damage cured at 12 months after treatment. No grade 5 toxicity was encountered. Conclusions CyberKnife seems to be a safe and effective treatment measure with tolerated adverse reaction and good local control rate for patients with small hepatocellular carcinoma.