Objective To evaluate preoperative bronchial atery infusion(PBAI) chemotherapy combined with surgery for patients with stage III A non-small cell lung cancer(NSCLC). Methods Seldinger procedure was used to insert the tube to bronchial artery branch which supplied blood to the tumor. The chemotherapeutic drugs were infused through the tube. After 1～3 courses of PBAI chemotherapy, the patients received operation. The patients receiving surgical treatment without PBAI chemotherapy at the corresponding period were chosen as control group. The radical resection rate and survival rate of the two groups were analyzsed. Results The response rate (CR+PR) of PBAI chemotherapy was 66.8%, and radical resection rate (90.3%) in PBAI chemotherapy group was significantly higher than that in control group(61.1%,P

Objective To evaluate the prognostic values of leukocyte count,hemoglobin,biochemical parameters,erythrocyte sedimentation rate and immunoglobulin on mortality in patients aged 80 years and over.Methods Totally 342 patients(aged 85.6±4.0 years)were followed up for (82.0±36.9) months,and the cause and time of death were recorded.Results During the period of follow up,198 patients suffered from death.Compared with the survival group (132 cases),the death group had older age [ (86.5±4.4)years vs.(84.5±3.2)years,t=-4.86,P＜0.01 ],higher white blood cell [ (6.2± 1.7) ＞ 109/L vs.(5.5±1.3) × 109/L,t=-3.93,P＜0.01 ],lower hemoglobin [(134.4±14.4)g/L vs.(140.0± 12.6)g/L,t= 3.65,P＜0.01 ],slightly faster erythrocyte sedimentation rate [ 11 mm/h(15 mm/h) vs.9 mm/h (10 mm/h),U=- 3.31,P＜0.01 ],lower immunoglobulin M [ (0.9±0.5)mg/L vs.(1.1±0.8)mg/L,t =2.55,P＜0.05 ],slightly higher urea nitrogen [ (7.5±2.6) mmol/L vs.(6.8±1.6) mmol/L,t=2.81,P＜0.01]and creatinine [(113.0±32.5) μmol/L vs.(100.5±15.8) μmol/L,t=-4.65,P＜0.01 ].Cox multivariate analysis revealed that older age (RR=1.083,95％CI:1.040 1.127,P＜0.01),white blood cell count (RR=1.134,95％CI:1.021-1.260,P＜0.05),creatinine (RR=1.011,95％CI=1.0021.020,P＜0.05),hemoglobin(RR=0.835,95％CI:0.714-0.975,P＜0.05)andimmunoglobulin M(RR=0.710,95％CI:0.521-0.966,P＜0.03),aorticaneurysm(RR=2.144,95％CI:1.163-3.951,P ＜ 0.05 ) were the independent risk factors for death.Conclusions Aging,increased WBC count,decreased hemoglobin and immunoglobulin M,elevated creatinine and aortic aneurysm are the independent risk factors for death,which are powerful parameters for the prognostic evaluation in the elderly aged 80 years and over.

BACKGROUND: Apatite-wollastonite containing glass-ceramic (AWGC) is a kind of good bone repairing materials with excellent bioactivity, which is prepared by traditional melting process.OBJECTIVE: To observe AWGC prepared with sol-gel method and its bioactivity.DESIGN: Design experiment of materials process and in vitro bioactivity experiment.SETTING: College of materials science and Engineering of Sichuan University.MATERIALS: AWGC.METHODS: This experiment was conducted at the laboratory of College of Materials Science and Engineering of Sichuan University between August 2002 and May 2003. AWGC was prepared from sol-gel and followed by heattreating process. Bioactivity was investigated in vitro by immersing in the simulate body fluid (SBF) at 37 ℃ for 7 days . JL-1155 laser particle analyzer, X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscope were used for micro-morphological structure analysis.MAIN OUTCOME MEASURES: ①The crystalline structure and microstructure of sol-gel derived glass-ceramic② The apatite forming process in simulate body fluid③ The diameter of the pore of the sol-gel derived apatite/wollastonite glass-ceramicRESULTS: ①Main crystalline phases of the sol-gel derived glass-ceramic materials were hydroxyapatite/fluoroapatite [Ca10(PO4)6(OH, F)] and β-wollastonite[β-CaSiO3]; Microstructure contained many micro-pores of 2-3μ m;② Sol-gel derived AW glass ceramic had excellent bioactivity: plenty of apatite granules were generated on the surface of the material after soaking for 7 days. ③Porous scaffolds possessed good macro-porous structure with the interconnected macro pores of 300-400 μm in diameter;CONCLUSION: Apatite-wollastonite containing glass-ceramic (AWGC)with excellent bioactivity was developed by sol-gel process. The material is expected to be a good candidate for bone-repairing and bone tissue engineering scaffold materials.

Objective To investigate the in vitro effects of KAAD-cyclopamine, a specific inhibitor of hedgehog signaling pathway, on the growth and apoptosis of human squamous cell carcinoma cell line A431. Methods A431 cells were cultured and treated with KAAD-cyclopamine(0.5, 1, 2, 5 μmol/L).Then, MTT assay was used to detect the proliferation of A431 cells, and light microscopy to observe cell morphology at different time points with a 24-hour interval. Flow cytometry was used to assess cell cycle,and annexin-V/propidium iodide double staining to evaluate the apoptosis in these cells after 48 hours of treatment with KAAD-cyclopamine. Results KAAD-cyclopamine of 0.5, 1, 2 and 5 μmol/L inhibited the proliferation of A431 cells by (7.0±2.3)%, (20.6±2.8)%, (48.3±3.4)% and (61.6±3.3)%, respectively (F = 49.92, P＜0.01 ). Furthermore, in the presence of KAAD-cyclopamine of 5 μmol/L, on day 1, 2, 3, 4,and 5 the proliferation of A431 cells was suppressed by (18.5±2.6)%, (56.1±3.7)%, (65.4±2.8)%,(71.2±1.9)% and (75.9±3.0)%, respectively, the difference was significant among these time points(F =16.32, P＜0.01 ). Statistical analysis showed that KAAD-cyclopamine downregulated the growth of A431 cells in a dose-and time-dependent manner (r = 0.91, 0.86, P＜0.01 and 0.05, respectively). Light microscopy revealed typical morphological changes of cell damage in A431 cells. KAAD-cyclopamine in creased the percentage of cells in G1 phase from (51.8±2.9)% to(76.2±1.8)% (F = 26.34, P＜0.01 ), the proportion of hypoploid cells from (1.7±0.3 )% to (8.7±0.2)% (F = 6.32, P＜0.05 ), which suggested that KAAD-cyclopamine could arrest A431 cells in G1 phase of the cell cycle. The apoptosis ratio in KAAD-cyclopamine-treated cells was significantly higher than that in the untreated control [ (46.2±2.8)% vs (18.5±3.1 )%, F = 32.01, P＜0.01 ]. Tomatidine treatment did not affect the proliferation or apoptosis of A431 cells (both P＞0.05).Conclusion KAAD-cyclopamine can markedly suppress the proliferation and induce apoptosis of A431 cells.

Objective To investigate the MSCT characteristics of peritoneal pseudomyxoma. Methods CT findings of peritoneal pseudomyxoma proved by surgery and pathology in 11 cases were retrospectively analyzed. Results On MSCT,the peritoneal pseud-omyxomas were irregular intraperitoneal cystic-solid masses, the CT attenuation was 18.5 ～ 27.6 HU, there were scallop-like, wavy and nodule-like indentations on the liver and/or spleen surface,large amount of mucinous ascites within abdominal, pelvic an-domentum cavity , thickening of peritoneum. On post-contrast administration , mild enhancement of peritoneum,cystic wall and omentum could be revealed. Conclusion MSCT examination has important value in diagnosis and differential diagnosis of peritoneal pseudomyxomas

Objective To study the value of MRI sequence and MRA in the diagnosis of reversible cerebral vasoconstriction syn-drome (RCVS).Methods MRI and MRA of 5 patients with RCVS were reviewed retrospectively.Abnormal distribution,morpholo-gy,signal intensity of the affected arteries and complication of RCVS on MRI and MRA were analyzed.Results All patients showed multifocal segmental vasoconstriction and dilatation of cerebral arteries on MRA,which sometimes was described as “string and beads”.There were 4 patients with cerebral parenchyma lesions,in which posterior reversible encephalopathy syndrome was showed in one case,cortical subarachnoid hemorrhage in one case,and watershed infarcts in 3 cases.Five patients recovered after 3 months. Conclusion MRI and MRA can clearly show cerebrovascular morphology and observe parenchymal secondary lesions,which have an important guiding significance for clinical treatment and prognosis assessment.

Objective To design and testify a novel strategy for acquiring mimetic epitope mapping by screening for a phage random peptide library using polyclonal anti keratin autoantibodies (AK auto Ab). Methods AK auto Ab were isolated and purified from pooled human sera by keratin affinity column in which keratin had been linked with CNBr Sepharose 4B,then biotinylated by the biotin ester. A 15 mer phage random peptide library was biopanned for 3 cycles and positive clones were identified by ELISA,competition assay and DNA sequencing. ResultsBy sequence comparison 23 positive clones were selected randomly and three epitopes were confirmed. Among the three epitopes SLSPMPTTNRR was the dominant epitope. The phages carrying positive clones reacted with AK auto Ab specifically and keratin could prevent interaction between AK auto Ab and positive phages. Conclusion The designed strategy is successfully applied in acquiring epitopes of polyclonal autoantibodies to keratin, which could provide a new approach for the discovery of epitope mapping which binds to natural autoantibodies.

Objective To observe the changes of serum soluble CD40 ligand (sCD40L) and fibrinogen in acute myocardial infarction (AMI) patients and to investigate the clinical predictive value of increased serum sCD40L and fibrinogen. Methods Serum sCD40L level of 60 AMI patients was determined by enzyme-linked im-munosorbent assay (ELISA). Plasma level of fibrinogen was measured. The patients were followed up for 2 years af-ter discharge from the hospital and were observed for cardiovascular event. Results AMI patients had higher sCD40L and fibrinogen levels than those of controls [(15.36±7.32) μg/L vs. (5.79±2.78) μg/L, (4.60±1.37)g/L vs. (3.03±0.82) g/L,P<0.001] ,which were significantly higher in the patients experiencing cardio-vascular event than those without cardiovascular event [(18.14±6.34) μg/L vs. (14.38±6.67) μg/L and (4.97±1.33)g/L vs. (4.20±1.24} g/L] (P<0.05). The patients with sCD40L≥14.5 μg/L or fibrinogen≥ 4.4 g/L experienced increased risk of adverse cardiovascular events (P<0.05). In AMI patients, sCD40L level was significantly higher in patients with diabetes than in nondiabetics [(18.38±6.71) μg/L vs. (14.46±6.48) μg/L, P<0.05)]. Fibrinogen level was related to sCD40L (r=0.27, P<0.05) and LVEF(r=-0.319, P<0.05). Conclusion Increased sCD40L and fibrinogen levels,which maybe related to the pathogenesis of AMI,can be found in AMI patients and can indicate an independent increased risk of major adverse cardiovascular events. Diabetes is independently associated with elevated sCD40L level in AMI patients.

Objective:To analyze the autistic severity and developmental level of children with autism spectrum disorder (ASD) of different gender and age.Methods:From March 2018 to February 2019, a total of 286 ASD children aged 18-96 months were enrolled.Severity of ASD was evaluated by the autism behavior checklist (ABC) and the childhood autism rating scale (CARS), while the Griffiths mental development scales-Chinese (GDS-C) was used to evaluate the children's mental development.According to gender and age, ASD severity and developmental levels of different subgroups were analyzed.SPSS 23.0 statistical software was used to analyze the data.According to the non-normal distrbution of variables, Mann-Whitney U test was used for comparison between the two groups, and Kruskal-Wallis H test was used for comparison between multiple groups and Spearman correlation analysis was used to analyze the correlation between two variables. Results:No gender difference was found in the total scores of ABC (52(40, 62), 57(36, 67), Z=0.661, P=0.509) and CARS (31(28, 35), 33(27, 36), Z=0.672, P=0.502) between the ASD boys and ASD girls.No gender difference was found in the total scores of ABC (43(33, 53), 52(34, 58), Z=0.717, P=0.473) and CARS (29(26, 32), 27(26, 30), Z=0.212, P=0.832) between the ASD boys and ASD girls when the general quotient of the GDS-C were all greater than or equal to 70 points.Also, no gender difference was found in the total ABC (55(44, 67), 59(40, 67), Z=0.067, P=0.947) and CARS (32(30, 35), 34(30, 36), Z=0.657, P=0.511) between the ASD boys and ASD girls when the general quotient of the GDS-C were all less than 70 points.The eye-hand coordination (64(52, 77), 60(43, 72), Z=2.138, P=0.033), performance (68(51, 86), 59(43, 68), Z=3.270, P=0.001), and practical reasoning (68(55, 91), 51(33, 58), Z=2.686, P=0.007) quotients of the ASD boys were significantly higher than those of the ASD girls.Compared with boys, a markedly higher proportion of developmental delay (35(80%), 124(51%), χ 2=12.083, P=0.001) was recorded for girls in relation to the performance subscale.There were significant differences in the total scores of ABC and CARS, the locomotor and eye-hand coordination quotients in GDS-C among ASD children of different ages(all P<0.05). The older the first diagnosis age, the lower the scores.The age of initial diagnosis was negatively correlated with the total scores of ABC ( r=-0.259), CARS ( r=-0.268), general quotient of GDS-C ( r=-0.127), locomotor ( r=-0.275), eye-hand coordination ( r=-0.213), performance ( r=-0.160) and practical reasoning ( r=-0.307) (all P<0.05), while positively correlated with hearing and language development quotient ( r=0.143) ( P<0.05). Conclusion:No significant gender difference was found on the severity of ASD in children aged 18 to 96 months, but the developmental level of some areas in boys was better than that of girls with ASD.ASD severity and developmental level vary depending on the age at which their ASD was diagnosed.The age of initial diagnosis is related to the severity and developmental level of ASD.

Objective: To examine the association of long working hours and shift work with occupational stress among medical staff in level A tertiary hospitals, so as to provide insights into promotion of physical and mental health among medical personnel. Methods: One level A tertiary hospital was sampled using a stratified cluster sampling method from southern and northern Xinjiang Uygur Autonomous Region, and all medical personnel were recruited from these two hospitals. Participants' demographics, working duration, and working in shifts were collected using questionnaires, and occupational stress was measured using the Core Scale for Measurement of Occupational Stress proposed by National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention. The associations of long working hours (weekly working duration of >40 hours) and shift work with occupational stress were examined using a multiple linear regression model. Results: A total of 2 529 questionnaires were allocated, and 2 262 were valid, with an effective rate of 89.44%. The respondents had a mean age of (35.12±8.71) years, and included 1 696 women (74.98%). Of all respondents, there were 722 doctors (31.92%), 1 033 nurses (45.67%), 361 medical or pharmaceutical technicians (15.96%), 1 808 with long working hours (79.93%) and 1 264 with shift work (55.88%). The score of occupational stress was (44.79±8.49) points, and the prevalence of occupational stress was 28.69% among respondents. Multiple linear regression analysis showed that after adjustment for age, marital status, length of service, position, smoking and physical exercise, long working hours (>40 h, β'=0.124; >48 h, β'=0.175; ≥55 h, β'=0.323) and shift work (β'=0.203) were influencing factors for occupational stress among medical personnel（P<0.05）; however, there was no interaction between long working hours and shift work (P>0.05). Conclusion Long working hours and shift work may increase the risk of occupational stress among medical personnel in level A tertiary hospitals.