Objective To investigate the concentration of β-amyloid peptide 42 (Aβ42) in cerebrospinal fluid (CSF) of patients with multiple sclerosis (MS) and its first clinical event-clinically isolated syndrome (CIS), and explore its associations with duration, disability severity and total T2-hyperintense lesion numbers in MRI. Methods Thirty-three patients with MS, 23 patients with CIS and 13 controls were investigated in this study. The disability severity of patients with MS and CIS in attack period was assessed by Expanded Disability Status Scale (EDSS). MRI scanning of brain, spinal cord or optic nerve was performed. And Aβ42 concentration in CSF was assessed by liquid chip assay. Results No significant differences of Aβ42 concentrations in CSF from patients with MS and CIS in attack period were noted as compared with those from controls ([104.78±13.73]pg/mL, [134.13±25.06] pg/mL vs. [137.02±23.35]pg/mL, P>0.05). ButAβ42 concentration in CSF from patients with secondary progressive MS (SPMS, [167.99±36.39]pg/mL) was significantly higher than that from patients with relapsing-remitting MS (RRMS, [92.74±13.64] pg/mL, P=0.042). No correlations of Aβ42 concentration in CSF with the duration of MS and CIS and scores of EDSS were noted in patients with MS and CIS (P> 0.05). The concentration of Aβ42 in CSF from patients with MS with a duration for more than one year lower than the ones with a duration for less than one year, but the difference was not significant (P>0.05). Total T2-hyperintense lesion numbers in MRI of patients with MS and CIS were positively correlated with Aβ42 concentration in CSF (MS patients: r=0.507, P=0.038; CIS patients:r=0.485,P=0.049). Aβ42 concentration in CSF from patients with MS with total T2-hyperintense lesions ≥4 (129.34±19.96) was significantly higher than that from the ones with total T2-hyperintense lesions <4 (73.51±12.60, P=0.049). Conclusion Axonal damage in patients with SPMS is more severe than that in patients with RRMS.Increased CSF Aβ42-level in patients with MS is a feature of disease progression. There is a possible relation between T2-hyperintense lesion load and axonal damage in patients with MS.

BACKGROUND AND OBJECTIVEWe previously reported that C-KIT overexpression and mutation exist in biopsy samples of nasopharyngeal carcinoma (NPC). Yet whether Imatinib had an inhibitory effect on the proliferation of NPC in vitro was still unknown. So, this study examined whether sensitivities to Imatinib of other cell lines are different and whether C-KIT expression and mutations exist, to analyze the correlations between them.

METHODSThe expression of C-KIT in NPC cell lines, including CNE-1, CNE-2, Hone-1, C-666, SUNE-1, 5-8F, and nasopharyngeal epithelial (NPE) cell line NP-69, were detected by Western blot. Direct sequencing of polymerase chain reaction (PCR) products was performed to analyze the sequences of C-KIT from the above-mentioned cell lines. Inhibitory effects on proliferation by Imatinib on these cell lines were determined by CCK-8 assay. Pearson product moment correlation and t test were used to analyze the correlation betweeen C-KIT overexpression, C-KIT gene mutation, and the inhibitory effect of Imatinib.

RESULTSCompared with NPE cell line NP-69, NPC cell lines CNE-1, CNE-2, Hone-1, C-666, SUNE-1, and 5-8F had significantly higher levels of C-KIT expression. Heterozygous IVS17+78T>C were found in CNE-1, CNE-2, Hone-1, and NP-69 cell lines, homozygous IVS17+78T>C was found in C-666, and no mutation was found in SUNE-1 or 5-8F. Imatinib had a dose-dependent inhibitory effect on proliferation for CNE-1, CNE-2, Hone-1, C-666, SUNE-1, and 5-8F. No significant correlation between the inhibitory effects of Imatinib, C-KIT overexpression, or C-KIT mutation was found.

CONCLUSIONC-KIT overexpression and intron mutation were found in NPC cell lines and Imatinib had a dose-dependent inhibitory effect on proliferation for NPC cell lines, yet no significant correlation between C-KIT overexpression, C-KIT mutation, or the inhibitory effect of Imatinib was found.

Antineoplastic Agents ; pharmacology ; Benzamides ; Carcinoma, Squamous Cell ; genetics ; metabolism ; pathology ; virology ; Cell Line ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Dose-Response Relationship, Drug ; Epithelial Cells ; cytology ; metabolism ; Herpesvirus 4, Human ; isolation & purification ; Heterozygote ; Homozygote ; Humans ; Imatinib Mesylate ; Introns ; Mutation ; Nasopharyngeal Neoplasms ; genetics ; metabolism ; pathology ; virology ; Nasopharynx ; cytology ; Piperazines ; pharmacology ; Proto-Oncogene Proteins c-kit ; genetics ; metabolism ; Pyrimidines ; pharmacology

Objective To explore the effect of encouraging nursing on the compliance and biphasic positive airway pressure (BiPAP) mechanical ventilation therapy of patients.Methods Totals of 68 cases with chronic obstructive pulmonary disease and type Ⅱ respiratory failure between June 2008 and June 2011,according to ventilator treatment time sequence,were randomly divided into the control group and observation group,each group with 34 cases.The control group received the routine ventilation treatment,health education and psychological nursing before ventilation treatment,while the observation group patients,on the basic of this,before and during treatment,received constant encouraging nursing.And the arterial blood gas analysis of all cases in the third days was conducted,and PaO2,PaCO2,pH value and compliance were observed and compared between two groups.Results After encouraging nursing,the compliance rate was 82.4％ in the observation group,and that was 41.2％ in control group,and the difference was statistically significant (x2 =4.533,P ＜ 0.01 ).After intervention,PaO2,PaCO2,pH value of all patients were improved,especially significantly improved in the observation group,the difference was statistically significant ( t =2.353,4.261,5.130,respectively;P＜0.05).Conclusions Encouraging nursing can significantly improve patients' compliance of using BiPAP ventilator and improve the treatment effect.

OBJECTIVETo investigate the efficacy of donor lymphocyte infusion (DLI) for treating relapsed high-risk leukemia patients after allogeneic hematopoietic stem cell transplantation (allo-HSCT).

METHODSThe data of 15 leukemia patients who had received DLI and 13 leukemia patients who had not received DLI in Zhujiang Hospital from 2000 to 2014 were studied retrospectively, and their 1 and 3 year overall survival rate (OS) were compared between the two groups.

RESULTSIn 15 patients received DLI, the 1 and 3 year OS were 58.3% and 46.7%, the 1 and 3 year disease-free survival (DFS) were 22.0% and 11.0%, respectively. The main death cause in these patients included relapse (n = 5) and acute GVHD (n = 1), whereas in 13 patients who had not received DLI, the 1 and 3 year OS were 29.9% and 15.0% respectively, their 1 year DFS were 11.2%. The main death cause in these patients were relapse (n = 9). The 1 and 3 year OS of patients who had received DLI was higher as compared with the patients who had not received DLI. but this difference was no statistically significant (P = 0.069).

CONCLUSIONDLI is an effective method for treating patients with relapsed leukemia, and may improve the therapeutic efficacy of DLI by combining other methods or alternating the types of the donor lymphocytes.

Disease-Free Survival ; Graft vs Host Disease ; Hematopoietic Stem Cell Transplantation ; Humans ; Leukemia ; Lymphocyte Transfusion ; Lymphocytes ; Recurrence ; Retrospective Studies ; Survival Rate ; Transplantation, Homologous

OBJECTIVETo find out the vector ability and function of Nosopsyllus wualis leizhouensis in the transmitting plague.

METHODSIn T: 19 degrees C +/- 1 degrees C, RH: 85% +/- 5%, data regarding the vector ability as cluster spreading, single flea spreading, single flea transmitting plague to single animal, formative bacterial embolus and infection fleas life-span through experiments was gathered.

RESULTSThe rate of infection on fleas was 94.64%, with 100% transmission rate of colony to spread, and 30% from single flea spreading to single animal. In the experiment of single flea transmission, all of the 388 rattus loseas were bitten by the fleas with bacterial, but only 9 animals were characteristically infected with the transmission potential, vector efficiency, survival potential of embolus, vector index as 0.360, 0.257, 0.868 and 0.223 respectively. The mean survive days of infected flea feed with blood were 17.58 (1 - 58), and the mean survive days of hunger infected flea were 7.25 (1 - 16). Formative bacterial embolus days were 8.80 (2 - 16) and the rate of embolus flea was 78.12%.

CONCLUSIONNosopsyllus wualis leizhouensis could serve as vector and important in the mode of plague transmittion.

Animals ; Female ; Insect Vectors ; microbiology ; Male ; Plague ; transmission ; Rats ; Siphonaptera ; microbiology

Objective To investigate the changes of matrix Metalloproteinases-9 (MMP-9) content in the cerebrospinal fluid of patients with brain injury and its clinical significance.Methods Sixty cerebrospinal fluid (CSF) specimens from patients with traumatic brain injury were chosen in our study as experimental group,and other CSF samples from 35 healthy subjects were selected as control group.The content of MMP-9 in cerebrospinal fluid was measured by enzyme-linked immunosorbent assay (ELISA) at 24 h and 72 h,1 and 2 weeks,respectively; and the comparative study was performed.Results The MMP-9 content in all CSF samples from the experimental group was significantly higher than that in the healthy control group (P＜0.05).Conclusion MMP-9 content in CSF of patients with brain injury increases obviously; MMP-9 in CSF may contribute to the severity of traumatic brain injury determination and guide the treatment strategies,which is worth for further study.

OBJECTIVETo investigate the risk factors of the serious complications related with double-J ureteral stent placement following percutaneous nephrolithotomy (PCNL).

METHODSClinical data were reviewed for 272 patients treated with PCNL and indwelling double-J stents between January, 2014 and April, 2016. The risk factors of serious complications were identified using univariate and multivariate logistic regression analysis.

RESULTSSerious complications of double-J ureteral stenting occurred in 63 patients (23.1%). Univariate and multivariate logistic regression analysis indicated that the ureter abnormalities (β=1.735, P=0.000, OR=5.670), stent indwelling duration (β=1.206, P=0.028, OR=3.340), gender (β=0.895, P=0.016, OR=2.446), preoperative urinary tract infection (β=0.849, P=0.020 , OR=2.338) and stent size (β=0.847, P=0.011, OR=2.333) were all risk factors of serious complications related with the procedure.

CONCLUSIONMale patients are exposed to a higher risk of serious complications following PCNL. Effective management of urinary tract infection and choice of appropriate stent size in cases of ureteral abnormalities help to reduce these complications. The double-J stent should be withdrawn as soon as possible in patients with good postoperative recovery.

Female ; Humans ; Kidney Pelvis ; Logistic Models ; Male ; Nephrostomy, Percutaneous ; Postoperative Period ; Risk Factors ; Stents ; adverse effects ; Ureter ; surgery ; Ureteral Obstruction ; surgery

OBJECTIVETo evaluate the reliability and validity of parent proxy-report scales of Pediatric Quality of Life Inventory Version 4.0 (PedsQL 4.0) Generic Core Scales, the Chinese Version.

METHODS3493 school students aged 6-18 years were recruited using multistage cluster sampling method. Health-related quality of life was assessed using the above-mentioned PedsQL 4.0 scales. The internal consistency was assessed, using Cronbach's a coefficient, while its validity was tested through correlation analysis, t-test and exploratory factor analysis.

RESULTSThe internal consistency reliability for Total Scale Score (Cronbach's alpha = 0.90), Physical Health Summary Score (alpha= 0.81), and Psychosocial Health Summary Score (alpha= 0.89) were excellent. Six major factors were extracted by factor analysis which basically matched the designed structure of the original version accounting for nearly 66% of the variance. The total Scale Score significantly decreased by 3.5 to 13.3 (P < 0.05) in children and adolescents who had diseases including cold, skin hypersensitiveness, food allergy, courbature or arthralgia, breathlessness with a frequency of 6 times or more per year or had asthma as compared to those with lower frequency (< or = 5 times/y) of the diseases or without asthma. We found moderate to high correlations between items and the subscales. Correlation coefficients ranged between 0.45 to 0.84 (P < 0.01).

CONCLUSIONThe reliability and validity of the parent proxy-report scales of PedsQL 4.0 Generic Core Scales of the Chinese Version were as good as the original version. Our findings suggested that the scales could be applied to evaluate the health-related quality of life in childhood children in similar Chinese regions to Guangzhou.

Adolescent ; Child ; Child Welfare ; psychology ; statistics & numerical data ; China ; Humans ; Psychometrics ; methods ; Quality of Life ; Students ; Surveys and Questionnaires

Objective To investigate the risk factors of adult urolithiasis in China. Methods 14 areas including 11 communities and 19 villages were randomly selected from 7 provinces of China by multi-stage stratified cluster sampling method during the period of May 2013 to July 2014. Individuals were investigated by a face-to-face questionnaire and a physical examination including urinary tract ultrasonographic examinations, routine blood and urine tests and blood biochemical examination ect. Results In total, 1 447 participants were found with the urolithiasis among 9 310 individuals and the overall prevalence was 15.5% (1 447/9 310). The prevalence of urolithiasis was significantly different among 14 areas ( 2=711.523，P<0.001), the lowest was the village in Shanxi (0.76%) and the highest was the village in Guangdong(35.99%). The intercept-only model further indicated the reginal aggregation for the individuals of urolithiasis (t=2.48, P=0.027) and the ICC was 48.74%. The two-level Logistic regression model showed that the gender (OR=1.235, 95% CI:1.082-1.411, P=0.005), age (OR=1.101, 95% CI:1.047-1.158, P=0.001), diabetes mellitus (OR=1.411，95%CI:1.192-1.670, P=0.001), family history of urinary calculi (OR=1.867, 95% CI:1.500-2.323, P<0.001), LDL (OR=1.150, 95% CI:1.050-1.260, P=0.006), drinking coffee (OR=1.352, 95% CI:1.065-1.716, P=0.017) and drinking sodas (OR=1.547, 95% CI:1.203-1.990, P=0.002) were the risk factors for urolithiasis. By contrast, consumed more fermented vinegar (OR=0.567, 95% CI:0.498-0.645, P<0.001) and had a amount of legume (OR=0.726, 95% CI:0.628-0.839, P<0.001) were protective factors of urolithiasis. Conclusion The prevalence of urolithiasis among adults reveal an aggregation in area-level, influenced by life environment and dietary habits of individual.

Objective This study assessed the effect of food preference and dietary behaviors on the risk of overweight or obesity in school children and adolescents aged 6-19 years.Methods A11 overweight or obeoe students,with age-and school-matched controls were recruited for this case-control study from 28 elementary and secondary schools in Guangzhou urban districts from October 2006 to April 2007.Weight and height were measured,and body nlass index was calculated for the classification of obesity.overweight and underweight.Their food preference and behaviors were asesbed using a structured questionnaire completed by their parents.Behavior and food preference were classified into four levels.and the relevant bottom levels were defined as control groups.Logistic regression wfs used to assess independent determinants of overweight and obesity.Results Among 7136 participants,1947 cases and 2136 normal weight controls from 5755 students with valid questionnaire data were included in the study.Results from univariate analysis showed that odds ratios for overweight or obesity were 0.60-0.69 in those with moat preference(top group)on vegetables,fruits,candy,evening snacks,0.50 in the students of less food partiality,1.84,1.30 and 1.26 in those of most preference for pork,beef and deep-fried foods.and 5.14 in students with fastest speed during eating,respectively(all P<0.05).Vegetable intake,evening snacks preference,speed during eating and food partiality remained with significant agsociation with overweight and obesity in multivariate analysis after adjusted for age,sex,family socio-economical status and their parents' body build. The adjusted odds ratios (OR) and 95% confidence intervals (95% CI) of the above items became 0.55 (0.42-0.73), 0.48 (0.35-0.65), 0.50(0.39-0.65),and 4.32(3.23-5.80) as compared to the relevant lowest categories, respecively. Conclusion Behaviors as eating more vegetable and slow-eating might be protective factos against overweight and obesity in school clildren.