Objective To investigate the mechanism of xCT on tumor metastasis in breast cancer cell MDA-MB-231. Methods Wound scratch assay and Transwell assay were performed to evaluate the effect of disruption and knockdown of xCT on cell migration and cell invasion in breast cancer cell MDA-MB-231 .Western Blot and RT-PCR were used to detect the expression levels of autophagy and EMT related markers in breast cancer cell MDA-MB-231 after treatment with sulfasalazine (SASP), an inhibitor of xCT activity and SLC7A11-RNAi.Results Both the scratch assay and the transwell migration assay showed that inhibition of xCT reduced the motility of MDA-MB-231 .The expression level of autophagy related protein LC3-Ⅱ/LC3-Ⅰwas elevated, the protein level of transcription factor Snail was down-regulated, while the mRNA level of Snail did not change in xCT inhibited MDA-MB-231 cells compared with MDA-MB-231 cells.Epithelial marker E-cadherin was up-regulated but mesenchymal marker Vimentin was down-regulated when xCT was deficient.Con-clusion Our current studies show that xCT is an endogenous regulator of tumor growth and metastasis in MDA -MB-231 and the expression level of xCT determines the phenotypes of MDA-MB-231 cells in invasion and migration in vitro.Inhibition of xCT can activate autophagy , induce the degradation of Snail ,and attenuate the EMT process in highly metastatic MDA-MB-231 cells.

Objective To characterize differences within facial profile esthetic evaluations among three groups of evaluators and the influences of sagittal or vertical skeletal patterns on facial profile esthetics. Methods A total of 114 silhouettes,from the pre?or post?treatment facial profiles of 57 patients,were scored by three groups of evaluators(professionals,patients'parents,and laypersons)to characterize differences within facial es?thetics evaluation among evaluators. The highest?scoring 30 silhouettes and the lowest?scoring 30 silhouettes were selected as the high score group and the low score group,respectively. Sixteen indices of the relative lateral cephalometric films were measured. Data were analyzed by SPSS 21.0. Results Facial profiles following orthodontic treatment scored higher than pre?treatment(P<0.05). There were significant differences between professionals and laypersons in facial profile scoring. Different sagittal skeletal patterns had no effect on esthetic evaluation ,but lower facial height significantly influenced whether a patient received a high or low esthetic score(P<0.05). Conclusion Orthodontic treatment can improve the fa?cial profile significantly,and lower facial height is the most sensitive index for facial profile evaluation in our study. However,all three evaluator groups have different esthetic standards that don't overlap. Notably,the expectations of laymen are higher than those of orthodontists.

BACKGROUND: Ribavirin is easily diluted by lacrimal fluid and has low bioavailability. In situ ophthalmic gel changes from liquid drug to gel phase upon exposure to physiological conditions, resulting in an increase in the precorneal residence time of drugs. OBJECTIVE: To prepare ribavirin in situ ophthalmic gel and valuate its theological feature. DESIGN, TIME AND SETTING: In vitro controlled observation, performed at the Engineering Research Center of Modem Chinese Medicine Discovery and Preparation Technique, Ministry of Education, Tianjin University of Traditional Chinese Medicine between September and October 2006. MATERIALS: Sodium alginate, Carbopol, and ribavirin. METHODS: Sodium alginate (1% and 2%) and Carbopol (0.3%, 0.6%, and 2%) were combined at different proportions to prepare in sire ophthalmic gel, then in which ribavirin was added. MAIN OUTCOME MEASURES: Viscosity determinations of prepared different concentrations of formulations were determined using a cone and plate viscometer. RESULTS: Ribavirin in situ ophthalmic gel prepared with 1% sodium alginate and 0.6% Carbopol had the largest viscosity. The viscosity change was not influenced by the addition of ribavirin. The in situ ophthalmic gel prepared with sodium alginate and Carbopol changed to the gel phase upon exposure to lacrimal fluid. CONCLUSION: 1% sodium alginate and 0.6% Carbopol produced the best rheological feature and could prolonge the precorneal residence time of drug than that of conventional ophthalmic solution.

OBJECTIVE:To investigate the effects of hydrophilic polymers on the stability of self-microemulsifying drug deliv-ery systems (SMEDDS). METHODS:Taking felodipine (FDP) as model drug,the content of FDP was determined by HPLC method. The effects of pure water,0.5% Kollidon VA64,HPMC E5,HPMC K100LV,HPMC K4M,PVP K30 solution,while 0.1%,0.5% and 1.0% HPMC E5 and Kollidon VA64 on residual content of dissolved FDP were determined in SMEDDS. RE-SULTS:The residual contents of dissolved FDP in SMEDDS placed in Kollidon VA64,HPMC E5,HPMC K100LV,PVP K30, HPMC K4M and pure water for 1 h were 92.7%,63.6%,50.2%,46.2%,36.0%and 24.0%,respectively. The order of maintain-ing the supersaturation state was Kollidon VA64>HPMC E5>HPMC K100LV>PVP K30>HPMC K4M>pure water. The residu-al contents of dissolved FDP in SMEDDS placed in 0.1%,0.5%,1% Kollidon VA64 and HPMC E5 and pure water for 1 h were 93.2%,95.1%,96.0% and 48.4%,62.1%,75.1%. CONCLUSIONS:Kollidon VA64 and HPMC E5 can significantly inhibit drug release in SMEDDS and be used as stabilizer of SMEDDS,wherein Kollidon VA64 was better.

Objective:To provide reference for the pharmacy automation construction in outpatient pharmacy of domestic hospitals. Methods:The work process, application effect and patient satisfaction before and after the use of automatic drug dispensing machine were analyzed and compared by the data collection and questionnaire according to the operation practice of automatic drug dispensing machine in the outpatient pharmacy of our hospital. Results:After using the automatic dispensing machine, the work flow could be op-timized, the comprehensive benefit and the satisfaction of patients could be improved, and the investment return rate was promising. Conclusion:Automatic pharmacy is the direction of modern pharmacy construction, which has a good application prospect.

Objective To investigate the effect of vascular tortuosity and bending radius on the new type knitting stents (LVIS stent ) releasing on the cavernous sinus segment of internal carotid artery. Methods From December 2015 to January 2016,31 consecutive patients with wide-neckedaneurysm treated with LVIS stents and the proximal end of the stent released in the cavernous segment at the Department of Neurosurgery,Changhai Hospital,the Second Military Medical University were enrolled. According to whether the stents completely adhered to the walls or not after the first release,they were divided into two groups:a satisfactorily release group (n =23 )or an unsatisfactorily release group (n =8 ). The differences of vascular tortuosity and bending radius of the 2 groups were compared.Results Thevascular tortuosities of the satisfactorily release group and the unsatisfactorily release group were 118° ± 23° and 147° ± 19° respectively. There was significant difference (P=0. 028). The vascular bending radii were 3. 4 ± 0. 7 mm and 2. 8 ± 0. 7 mm respectively. There was significant difference (P=0. 042). The mean vascular tortuosity was larger and the mean vascular bending radius was smaller in the unsatisfactorily release group. Conclusions The greater the vascular tortuosity,the smaller the vascular bending radius may be connected with the unsatisfactorily release in the LVIS stent. The evaluation of vascular tortuosity is conductive to the guidance of the stent release technique before stent implantation.

Objective:To evaluate the effect of remote lifestyle intervention on the management of weight and related indicators in the overweight and obese population.Methods:A total of 400 individuals with overweight or obesity who participated in remote lifestyle intervention in the Health Management Department of Shenzhen People′s Hospital from May 2015 to December 2018 were included as the remote intervention group, and 400 individuals with overweight and obesity who matched their age and gender were selected as the control group. Dietician established individual WeChat groups with the remote intervention group, and the WeChat platform was used to conduct remote lifestyle intervention for them, including setting weight control goals, giving timely feedback to the food log based on photos, providing exercise guidance and psychological support. The control group received personalized diet and exercise prescriptions, but did not receive remote intervention. After adjusting the data by propensity score matching method, univariate and multivariate logistic regression models were used to analyze the management effect of weight and related indicators in the two groups after one year.Results:After one year of intervention, effective data were obtained from a total of 755 cases (371 cases in the remote intervention group and 384 cases in the control group), and effective data were retained from 446 cases (223 cases in the remote intervention group and 223 cases in the control group) after bias matching. The body mass index (BMI), systolic blood pressure, fasting blood glucose, triglyceride, total cholesterol, low-density lipoprotein, and serum uric acid of the remote intervention group [(24.85±2.52) kg/m 2, (110.21±10.53) mmHg, (4.96±0.65) mmol/L, (1.25±0.82) mmol/L, (4.87±1.11) mmol/L, (2.88±0.74) mmol/L, and (306.01±95.66) mmol/L respectively] were significantly lower than that of the control group [(27.76±2.28) kg/m 2, (121.14±14.07) mmHg, (5.10±0.87) mmol/L, (1.54±0.83) mmol/L, (5.28±0.96) mmol/L, (3.13±0.80) mmol/L, (355.16±92.68) mmol/L respectively] (all P<0.05). After intervention, intervention was consistently being influencing factors when BMI was reduced by 4%―12%, ( P<0.05). The probability of a 12% reduction in BMI in the remote intervention group was 112.486 times higher than that in the control group (95% CI: 16.852-890.266). At the same time, the initial BMI was an influential factor for the restoration of normal BMI. For every 1 kg/m 2 decrease in the initial BMI, the probability of restoration of normal BMI was 4.76 times higher than that before the decrease (95% CI: 3.222-5.057). Conclusions:Remote lifestyle intervention has a certain effect on the management of weight and related indicators in the overweight and obese populations. It has significant effect on weight loss of overweight and mildly obese people, but has limited effect on moderate and severe obese people.

Objective To evaluate the application of high-resolution ultrasonography in the diagnosis of nerve root lesion of cervical vertebra intervertebral foramen part. Methods Twenty-seven patients with root avulsion injury of brachial plexus intervertebral part and 8 patients with schwannoma of brachial plexus root were examined with high-resolution ultrasonography. Thirty healthy volunteers were involved for the sonographic imagings of normal brachial plexus intervertebral part. The ultrasound findings of the patients before operation were compared with surgical outcomes. Results The normal intervertebral part of brachial plexus were shown as hypoechoic tubular strucuture, which could be identified with cervical artery and transverse process used as landmarks for the intervertebral part of brachial plexus root. The detection ratios of normal intervertebral part for C5-C8 and outside part of braehial plexus were 100％. In 27 patients with root avulsion injury of intervertebral brachial plexus, the intervertebral nerve root were enlarged as hypoechoic area, with nerve dissected partly or disappearing, distal nerve parts outside the intervertebral foramen swelling, edema,or cerebrospinal fluid assembling as cystic masses. In 8 patients with schwannoma of brachial plexus root part, the spinal ganglia outside intervertebral foramen were shown as tumor-like hypoechoic mass, with blood supply shown inside. Conclusions High-resolution ultrasonography is of great value for early and convenient diagnosis of root avulsion injury and mass of brachial plexus intervertebral part, especially in community hospitals,which could provide important information for clinical therapy.

Objective:To investigate the heterogeneity of epitopes recognized by anti-GBM autoantibodies in sera from a large cohort of Chinese patients with anti-GBM disease and its clinical significance.Methods: The present study included 108 patients with anti-GBM disease who were diagnosed in our hospital, between Jan 1991 and May 2009, with complete clinical and renal pathological data. Sera or plasma exchange of the patients were used to incubate with cryostat section of normal human renal tissue for indirect immunofluorescence (IIF) assay. The cryostat sections of normal renal tissue were pre-treated by 6 mol/L urea to unmask cryptic epitopes, and untreated cryostat sections were used to detect natural exposed epitopes. The sera were diluted from 1:2 to 1:512 to determine titers of anti-GBM autoantibodies Patients with anti-GBM autoantibodies against cryptic or exposed epitopes were further stratified;their clinical and pathological associations were analyzed. Results: Sera from all the 108 patients could recognize cryptic epitopes on normal renal tissue ( urea treated section). IIF showed IgG linear staining along GBM. However, sera from 56/108 patients (group A) could also recognize exposed epitopes on normal renal tissue (untreated section) ; sera from the rest 52/108 patients (group B) could not recognize exposed epitopes. In urea treated condition, the average titer of anti-GBM autoantibodies from sera of patients in group A was significantly higher than that in group B (P＜0.01) , ANCA-positive patients in group A were significant less than that in group B (P＜0.01) . There was no significant difference between the two groups in regard to other clinical data (including serum creatinine) and renal histopathologic data. Conclusion: Anti-GBM autoantibodies from some patients with anti-GBM disease could recognize natural exposed epitopes, however, their anti-GBM titer for cryptic epitopes was higher than that of those recognizing cryptic epitopes only and the prevalence of serum ANCA was significantly less.

Child ; China ; Community-Acquired Infections ; microbiology ; Drug Resistance, Bacterial ; genetics ; Haemophilus influenzae type b ; drug effects ; genetics ; isolation & purification ; Humans ; Microbial Sensitivity Tests ; Pneumonia ; microbiology