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Wu F, Pathak R, Jiang L, Chen W, Chen C, Tong Y, Zhang T, Jian R, Qiao Q. Sb 2S 3 Thickness-Related Photocurrent and Optoelectronic Processes in TiO 2/Sb 2S 3/P3HT Planar Hybrid Solar Cells. NANOSCALE RESEARCH LETTERS 2019; 14:325. [PMID: 31620919 PMCID: PMC6795671 DOI: 10.1186/s11671-019-3157-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 09/23/2019] [Indexed: 06/10/2023]
Abstract
In this work, a comprehensive understanding of the relationship of photon absorption, internal electrical field, transport path, and relative kinetics on Sb2S3 photovoltaic performance has been investigated. The n-i-p planar structure for TiO2/Sb2S3/P3HT heterojunction hybrid solar cells was conducted, and the photon-to-electron processes including illumination depth, internal electric field, drift velocity and kinetic energy of charges, photo-generated electrons and hole concentration-related surface potential in Sb2S3, charge transport time, and interfacial charge recombination lifetime were studied to reveal the key factors that governed the device photocurrent. Dark J-V curves, Kelvin probe force microscope, and intensity-modulated photocurrent/photovoltage dynamics indicate that internal electric field is the main factors that affect the photocurrent when the Sb2S3 thickness is less than the hole diffusion length. However, when the Sb2S3 thickness is larger than the hole diffusion length, the inferior area in Sb2S3 for holes that cannot be diffused to P3HT would become a dominant factor affecting the photocurrent. The inferior area in Sb2S3 layer for hole collection could also affect the Voc of the device. The reduced collection of holes in P3HT, when the Sb2S3 thickness is larger than the hole diffusion length, would increase the difference between the quasi-Fermi levels of electrons and holes for a lower Voc.
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Liu L, Yang K, Zhang JF, Wu F, Shi L, Zhao S, He J, Li W. [Spatio-temporal analysis of Oncomelania hupensis along Jiangsu section of the Yangtze River from 2015 to 2017]. ZHONGGUO XUE XI CHONG BING FANG ZHI ZA ZHI = CHINESE JOURNAL OF SCHISTOSOMIASIS CONTROL 2019; 31:603-606. [PMID: 32064803 DOI: 10.16250/j.32.1374.2018175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To investigate the spatio-temporal characteristics of Oncomelania hupensis snails along the Jiangsu section of the Yangtze River, so as to provide evidence for eliminating schistosomiasis and formulating precision control measures in Jiangsu Province. METHODS A total of 75 marshlands were randomly sampled from Nanjing, Zhenjiang and Yangzhou cities along the Jiangsu section of the Yangtze River basin, and the spatio-temporal distribution and changing patterns of O. hupensis snails were investigated using the spatial autocorrelation analysis, kernel density analysis and hotspot analysis during the period from 2015 through 2017. RESULTS There was a spatial autocorrelation in the mean snail density along the Jiangsu section of the Yangtze River basin during the period from 2015 through 2017. The number of living snails and the density of living snails showed an overall decline in Yangzhou City; however, both showed a slight increase in 2016. Kernel density analysis and hotspot analysis showed that the hotspots of living snails were located in the regions neighboring the marshlands at the Yangzhou-Zhenjiang boundary areas along the Jiangsu section of the Yangtze River basin. CONCLUSIONS There is a spatial autocorrelation in the snail distribution with hotspots along the Jiangsu section of the Yangtze River basin, and the surveillance of snails should not be neglected in the marshlands in Jiangsu Province.
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Zhu H, Pan Y, Wu F, Huan R. Optimized Electrode Locations for Wearable Single-Lead ECG Monitoring Devices: A Case Study Using WFEES Modules based on the LANS Method. SENSORS 2019; 19:s19204458. [PMID: 31615163 PMCID: PMC6832916 DOI: 10.3390/s19204458] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 09/27/2019] [Accepted: 10/11/2019] [Indexed: 11/16/2022]
Abstract
Body surface potential mapping (BSPM) is a valuable tool for research regarding electrocardiograms (ECG). However, the BSPM system is limited by its large number of electrodes and wires, long installation time, and high computational complexity. In this paper, we designed a wearable four-electrode electrocardiogram-sensor (WFEES) module that measures six-channel ECGs simultaneously for ECG investigation. To reduce the testing lead number and the measurement complexity, we further proposed a method, the layered (A, N) square-based (LANS) method, to optimize the ECG acquisition and analysis process using WFEES modules for different applications. Moreover, we presented a case study of electrode location optimization for wearable single-lead ECG monitoring devices using WFEES modules with the LANS method. In this study, 102 sets of single-lead ECG data from 19 healthy subjects were analyzed. The signal-to-noise ratio of ECG, as well as the mean and coefficient of variation of QRS amplitude, was derived among different channels to determine the optimal electrode locations. The results showed that a single-lead electrode pair should be placed on the left chest above the electrode location of standard precordial leads V1 to V4. Additionally, the best orientation was the principal diagonal as the direction of the heart's electrical axis.
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Ruan Y, Guo YF, Yu M, Liu F, Zhu YL, Sun SY, Huang ZZ, Zheng Y, Shi Y, Wu F. [Association between edentulism and cognition among people aged 50 and over]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 2019; 40:1234-1239. [PMID: 31658523 DOI: 10.3760/cma.j.issn.0254-6450.2019.10.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Objective: To investigate the association between edentulism and cognition in people aged 50 and over in China. Methods: Cross-sectional data was collected from the first wave of World Health Organization Study on global AGEing and adult health in China, among people aged 50 and over in China. A comprehensive cognitive test was used to assess cognitive functions, including verbal recall (VR), verbal fluency (VF), forward digit span (FDS) and backward digit span (BDS) among the subjects. Association between edentulism and cognition was examined by a two-level (individual level and community level) linear model. Results: A total of 12 843 individuals aged 50 years and over were included for analysis, with an average age of (63.0±9.3) years. The overall prevalence of edentulism was 11.0%. The edentulous adults had lower mean scores of VR (4.55), VF (10.88), FDS (6.25), BDS (2.96) and overall cognition (49.15) (P<0.001). Edentulism was negatively associated with VR (β=-0.216, 95%CI: -0.370 - -0.062), FDS (β=-0.186, 95%CI: -0.293 - -0.078) and overall cognition (β=-1.703, 95%CI: -3.025 - -0.381) after adjusted for age, sex, residence, education level, marital status, household income, co-morbidity of chronic conditions, BMI, smoking and drinking alcohol. Conclusion: Edentulism was related with lower cognition level in people aged 50 and over in China.
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Guo YF, Shi Y, Ruan Y, Sun SY, Huang ZZ, Zheng Y, Li G, Wu F. [Association between daily sedentary time and frailty among people aged 50 years and over]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 2019; 40:1257-1261. [PMID: 31658527 DOI: 10.3760/cma.j.issn.0254-6450.2019.10.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Objective: To investigate the association between daily sedentary time and frailty among people aged 50 years and over. Methods: Cross-sectional data was collected from the first wave of World Health Organization Study on global AGEing and adult health in China. A two-level (individual level and community level) logistic model was performed to identify the association between daily sedentary time and frailty. The dose-response relationship between them was analyzed by restrictive cubic spline curve. Results: A total of 13 175 individuals aged 50 years and over were included for analysis. A positive association between daily sedentary time and frailty was noticed, both in urban (OR=1.22, 95%CI: 1.17-1.27) or rural areas (OR=1.11, 95%CI: 1.05-1.18) under study. The dose-response curve showed that daily sedentary time and frailty might present an approximate linear relationship. Conclusion: Results from this study showed significant association exsited between daily sedentary time and frailty, approximately with a linear dose-response relationship.
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Guo YF, Ruan Y, Xiao YZ, Guo XL, Sun SY, Huang ZZ, Shi Y, Wu F. [Association between frailty and sleep duration among people aged 50 years and over]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 2019; 40:1252-1256. [PMID: 31658526 DOI: 10.3760/cma.j.issn.0254-6450.2019.10.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the association between sleep duration and frailty among people aged 50 years and over. Methods: Cross-sectional data was collected from the first wave of World Health Organization Study on global AGEing and adult health in China. Frailty index was constructed on the proportion of deficits, out of the 40 variables. A two-level (individual level and community level) linear model was performed to identify the related factors on frailty. All the models were stratified by age, gender, residence (urban/rural). Restricted cubic spline was performed to graphically evaluate the dose-response association between self-reported sleep duration and frailty. Results: A total of 13 175 individuals aged 50 years and over participated in this study. Without adjusting on any confounding factors, shorter or longer sleep duration significantly increased the risk of weakness compared with normal sleep time (OR=2.05, 95%CI: 1.71-2.44; OR=1.35, 95%CI: 1.12-1.63). After adjusting for confounding factors such as gender, age, residence, education, family assets, vegetable, smoking, drinking and physical activity, a positive association between short sleep duration and frailty was noticed compared with normal sleep time (aOR=1.60, 95%CI: 1.27-2.01). The results of stratified analysis on sex, age and urban and rural areas showed that, after adjusting for gender, age, residence, education level, family assets, intake of vegetables and fruits, smoking, drinking and physical activity, only shorter sleep duration was positively correlated with the risk of weakness. In addition, among people aged 65 years and over, adjusted for confounding factors, the risk of weakness increased by 91%, compared with normal sleep time (aOR=1.91, 95%CI: 1.46-2.49). The dose-response curve also showed that the sleep duration and frailty present an approximate "U" shaped relationship. Conclusion: Short sleep duration might be associated with frailty.
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Guo YF, Ruan Y, Lin HL, Ma WJ, Zhang QJ, Sun SY, Huang ZZ, Zheng Y, Shi Y, Wu F. [Association between low handgrip strength and air pollution among people aged 50 years and over]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 2019; 40:1240-1244. [PMID: 31658524 DOI: 10.3760/cma.j.issn.0254-6450.2019.10.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To examine the association between long-term exposure to ambient PM(2.5) combined with indoor air pollution and handgrip strength among people aged 50 and over. Methods: Data were from the first wave of World Health Organization Study on global AGEing and adult health in China. Ambient annual concentration of PM(2.5) was estimated by using the satellite data we also investigated the use of fuels and chimneys as indoor air pollution. A two-level (individual level and community level) linear model was applied to examine the association between long-term exposure to ambient PM(2.5) combined with indoor air pollution and the handgrip strength. Results: A total of 13 175 individuals aged 50 years and over were included for analysis. The handgrip strength was (26.67±0.54) kg. Ambient PM(2.5) was found to be significantly associated with the risk of decreased handgrip strength. Outdoor PM(2.5) concentration was negatively correlated with handgrip strength (β=-0.23, 95%CI: -0.31 - -0.14) decrease in handgrip strength after adjusting for gender, age, residence, education, household assets, intake of vegetables and fruits, smoking and drinking, physical activity. In rural area, compared to those who used solid fuel, use of clean fuel increased (β=1.41, 95%CI: 0.36-2.46) handgrip strength. But in urban area, we did not find any statistically significant association between the use of clean fuel and handgrip strength (β=0.19, 95%CI: -0.95-1.32). Conclusion: This study found that long-term exposure to ambient PM(2.5) combined with indoor air pollution was significantly associated with low handgrip strength among people aged 50 years and over, this suggested that ambient PM(2.5) might serve as one of the risk factors for low physical function seen in the people aged 50 years and over.
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Guo YF, Shi Y, Ruan Y, Wu F. [Project profile: Study on global AGEing and adult health in China]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 2019; 40:1203-1205. [PMID: 31658517 DOI: 10.3760/cma.j.issn.0254-6450.2019.10.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
With accelerating and rapid ageing in China, there is an urgent need to collect reliable, valid and cross-nationally comparable data on health in the elderly to provide basis for richer and empirical analysis on the changing health over one's life course and compression of morbidity. To meet the demands of this growing special population, planning and preparing on related social protection mechanisms (health and pension systems) should also based on evidence-based decision-making process. Based on long-term follow-up, large scale cohort study is indispensible for the etiology of common chronic diseases and disabling conditions. This study aims to introduce the background, project objectives, contents, baseline characteristics, strength and weakness as well as prospect, related to the Study on global AGEing and adult health in China.
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Wu F, Sun B, Chu X, Zhang Q, She Z, Song S, Zhou N, Zhang J, Yi X, Wu D, Wang J. Hyaluronic Acid-Modified Porous Carbon-Coated Fe 3O 4 Nanoparticles for Magnetic Resonance Imaging-Guided Photothermal/Chemotherapy of Tumors. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:13135-13144. [PMID: 31510746 DOI: 10.1021/acs.langmuir.9b02300] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Chemotherapy is an effective method for treating cancer, clinically. However, side effects of drug and multidrug resistance restrict its application. In recent years, the combined treatment of chemotherapy and photothermal therapy (PTT) is becoming a promising method for treating cancer. PTT utilizes nanomaterials absorbing near-infrared light and producing heat to acquire advanced hyperthermia strategy for cancer treatment. Carbon nanomaterials with good biocompatibility, high surface area, and excellent photothermal properties are an excellent nanoplatform for drug delivery and PTT. Herein, porous carbon-coated magnetite nanoparticles (PCCMNs) were successfully synthesized by a one-pot solvothermal method. Magnetite, a contrast agent, can be used for magnetic resonance imaging. Hyaluronic acid was used to modify the PCCMNs to achieve targeted therapy. The obtained nanohybrid with a good photothermal effect can realize combined PTT/chemotherapy and will be a promising nanoplatform for high efficacy theranostics.
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Guan C, Xie L, Wu F, Sun Z, Song L, Xu B. TCT-100 Impact of Appropriate Indications on Clinical Outcomes After CTO PCI: Immediate and 5-Year Results in 2,659 Consecutive Patients. J Am Coll Cardiol 2019. [DOI: 10.1016/j.jacc.2019.08.144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Chen X, Zhou F, Li X, Zhao C, Li W, Wu F, Yu J, Gao G, Li J, Li A, Ren S, Zhou C. Folate receptor-positive circulating tumour cells as a predictive biomarker for the efficacy of first-line pemetrexed-based therapy in patients with non-squamous non-small cell lung cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz260.084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Ruan Z, Qian ZM, Guo Y, Zhou J, Yang Y, Acharya BK, Guo S, Zheng Y, Cummings-Vaughn LA, Rigdon SE, Vaughn MG, Chen X, Wu F, Lin H. Ambient fine particulate matter and ozone higher than certain thresholds associated with myopia in the elderly aged 50 years and above. ENVIRONMENTAL RESEARCH 2019; 177:108581. [PMID: 31323395 DOI: 10.1016/j.envres.2019.108581] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 06/29/2019] [Accepted: 07/08/2019] [Indexed: 05/12/2023]
Abstract
Although myopia has been largely ignored among the elderly population, there is an increased risk of myopia with advancing age. Ambient air pollution is one potential contributor to vision impairments, but few epidemiological studies have demonstrated such an association. This cross-sectional survey collected the information of 33,626 subjects aged ≥50 years in six developing countries during 2007-2010. Myopia was identified based on questions related to symptoms of myopia. The annual concentrations of fine particulate matter (PM2.5) and ozone (O3) were estimated with the satellite data and chemical transport model. We examined the associations between the two pollutants and myopia using mixed-effect Poisson regression models with robust variance estimation (sandwich estimation). We observed J-shaped associations between the two pollutants and myopia, and identified 12 and 54 μg/m3 as the threshold concentrations. The adjusted prevalence ratio was 1.12 (95% CI: 1.05, 1.21) and 1.26 (95% CI: 1.14, 1.38) for each standard deviation (SD) increase in PM2.5 and O3 concentrations above their threshold, respectively. In addition, the interaction analysis suggested a synergistic interaction of these two pollutants on myopia in the additive model, with a synergistic index of 1.81 (Bootstrapping 95% CI: 0.92, 4.94). Our results indicate that long-term exposures to PM2.5 and O3 might be important environmental risk factors of myopia in the elderly, and suggest that more efforts should be taken to reduce airborne PM2.5 and O3 levels to protect vision health.
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Xue L, Fan W, Wu F, Zhang Y, Guo K, Li J, Yuan L, Dang W, Sun R. The influence of thermo-oxidative aging on the electromagnetic absorbing properties of 3D quasi-isotropic braided carbon/glass bismaleimide composite. Polym Degrad Stab 2019. [DOI: 10.1016/j.polymdegradstab.2019.108941] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zhang C, Liu Y, Wu F, Zhai L, Lu H. Analysis of WeChat Subscription Influence Based on Topic Diffusion. INTERNATIONAL JOURNAL OF DIGITAL CRIME AND FORENSICS 2019. [DOI: 10.4018/ijdcf.2019100109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
With the average daily growth of 15000 new subscribers, the number of WeChat subscription has broken the 5,800,000 subscribers recently. WeChat subscription's topic influence calculation has been very significant. This article takes Tencent-WeChat subscription platform as the research object and focuses on the influence analysis of topic diffusion. Based on the subscription's temporal characteristics of influence, the parameters of propagation capability, and the similarity weights among different subscriptions with the same topic, the authors propose an analysis model of WeChat subscription influence.
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Liu Y, Mao S, Zhou F, Xiong A, Chen B, Yu J, Wu F, He Y, Gao G, Chen X, Su C, Ren S, Zhou C. P2.01-30 Hepatitis B Infection or Aminotransferase Increase Associate with Poor Outcome of Anti-PD-1 Monotherapy in Patients with Advanced NSCLC. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Mao S, Liu Q, Liu Y, Zhou F, Yang S, Wang Y, Yu X, Wu F, He Y, Chen X, Su C, Ren S, Zhou C. EP1.12-07 High Discrepancy of Chemotherapy Outcomes Between Patients with Peripheral and Central Small Cell Lung Cancer. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Zhao C, Song X, Jin W, Wu F, Zhang Q, Zhang M, Zhou N, Shen J. Corrigendum to “Image-guided cancer therapy using aptamer-functionalized cross-linked magnetic-responsive Fe3O4@carbon nanoparticles” [Anal. Chim. Acta 1056 (2019) 108-116]. Anal Chim Acta 2019; 1074:150-151. [DOI: 10.1016/j.aca.2019.04.056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Liu Y, Wu F, Wu Y, Deng Y, Xiao Y, Yang X, Zhang S, Huang Z, Chen Y, Han Y, Wang J, Huang X, Tan D, Wang J, Zhan S. P6290Enhanced IL-6/pSTAT3/fibroblast signaling pathway contributes to spontaneous postoperative atrial fibrillation in a novel simulated cardiac surgery mouse model. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
Cumulative evidences have shown that IL-6 in atrium might play an important role in the pathogenesis of postoperative AF (POAF) via activation of atrial fibrosis in patients undergoing CABG. However, whether atria produces IL-6 after the stimulation of CABG and its causal relationship with spontaneous POAF (sPOAF) and its specific pathways is still unclear.
Purpose
To test the hypothesis that atrium will produce IL-6 after CABG and causes sustained sPOAF (ssPOAF) through activating pSTAT3-mediated fibroblast proliferation.
Methods
To determine the causal relationship between IL-6 and sPOAF, IL-6−/− and wild type (WT) mice were both divided into three groups (10 mice/group): CABG group (NAI, mimic CABG), anti-inflammatory group (AI, mimic CABG with pericardial administration of methylprednisolone for 3 days via chest tube), and control group (anesthesia only). Mice were monitored for ssPOAF for 7 days using implanted telemetry device. Another two sets of mice, using the same models mentioned above, were euthanatized at 48th hours postoperatively. The atria of one set animals were excised and separated into pericardium (PC), pulmonary vein (PV), left atrium (LA), and right atrium (RA) and cultured for 4 hours. IL-6 levels in the supernatant were measured at 10 min and 4 hours of culture using ELISA test. The region producing the largest amount of IL-6 in the other set of animals was harvested for analyzing expressions of IL-6, pSTAT3/STAT3, connexin 43 and 40, fibroblast deposition, and collagen I and III. Path analysis was performed to determine the causal relationship of CABG induced IL-6 release, pSTAT3/fibroblast signaling, and the onset of ssPOAF.
Results
40% NAI-WT mice developed ssPOAF (Figure 1A) which was completely protected in IL-6−/− and AI groups. IL-6 was produced by all 4 atrial regions at 4hrs after CABG stimulation with the LA producing the highest amount. Western blotting (Figure 1B), RT-CPR, Masson staining, and immunofluorescence all showed a significantly upregulation of IL-6, pSTAT3/STAT3, fibroblasts, collagen I and III, and downregulation of Cx40 an 43 in NAI-WT mice, but not in IL-6−/− and AI mice. IL-6 was colocalized with vimentin to a large extent in cytoplasm (Figure 1C). IL-6 had strong positive correlation with pSTAT3/STAT3, collagen I and III (all r>0.700, P<0.001), moderate and weak negative correlation with Cx40 and 43 (r=−0.505, P<0.001; r=−0.307, P=0.048, respectively). Path analysis (Figure 1D) revealed that every 1 unit increase in IL-6 upregulated a 0.589 unit increase in ssPOAF, which was mediated by pSTAT3/collagen indirectly and collagen I/ collagen III directly.
Conclusion
Our study, for the first time, to the best of our knowledge, established a novel pathophysiological role of IL-6/pSTAT3/fibroblast signaling in the pathogenesis of ssPOAF and demonstrated that inhibition of atrial IL-6 might be a potential novel sPOAF prevention strategy.
Acknowledgement/Funding
The National Natural Science Foundation (No.81170170)
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Li Y, Yang M, Wu F, Cheng K, Chen H, Shen X, Lao L. Mechanism of electroacupuncture on inflammatory pain: neural-immune-endocrine interactions. J TRADIT CHIN MED 2019; 39:740-749. [PMID: 32186125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nociceptive signals are transmitted by peripheral afferents to the central nervous system under pain condition, a process that involves various neurotransmitters and pathways. Electroacupuncture (EA) has been widely used as a pain management technique in clinical practice. Emerging studies have shown that EA can inhibit the induction and transmission of pain signals and, consequently, mediate anti-nociceptive and anti-inflammatory effects by rebalancing the neural-immune-endocrine interactions. This review summarizes the neural-immune-endocrine circuit including peripheral afferent and central efferent, contributing to EA-induced neuroimmune and neuroendocrine modulation in inflammatory pain models. The peripheral afferent circuit includes crosstalk among immune cells, inflammatory cytokines, peripheral nociceptors. In central efferent primarily involves the neuroinflammatory interactions between spinal nociceptive neurons and glial cells. Furthermore, the hypothalamic-pituitary-adrenal axis, sympathetic and vagal nervous may serve as an essential pathway involved in the mechanism of acupuncture-mediated analgesia within the interactions of the central, immune and endocrine systems. Overall, this review focuses on the interactions of neural-immune-endocrine in inflammatory pain, which may be underlying the mechanism of EA-induced anti-inflammatory and antinociceptive effect.
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Chen D, Zhao H, Yan K, Xu D, Guo Q, Sun L, Wu F, Chigrinov VG, Kwok HS. Interference-free and single exposure to generate continuous cycloidal alignment for large-area liquid crystal devices. OPTICS EXPRESS 2019; 27:29332-29339. [PMID: 31684669 DOI: 10.1364/oe.27.029332] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 09/12/2019] [Indexed: 06/10/2023]
Abstract
An approach for generating cycloidal pattern of liquid crystal (LC) molecules based on interference-free and single exposure is illustrated. The spatial manipulation of polarization state is achieved using birefringent prism and wave plates. And then, the spatially variant polarization of exposure beam is transferred to LC molecules by azo-dye photo-sensitive layer. Consequently, the LC samples fabricated shows periodically cycloidal texture and diffraction efficiency more than 99%. The measured period Λ and diffraction angle are in good consistency with theoretical results. Thus, this exposure method provides an effective and robust way for fabricating large-area LC elements, therefore paving the way for widespread applications of high-performance diffractive LC devices.
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Chai RC, Chang YZ, Wang QW, Zhang KN, Li JJ, Huang H, Wu F, Liu YQ, Wang YZ. A Novel DNA Methylation-Based Signature Can Predict the Responses of MGMT Promoter Unmethylated Glioblastomas to Temozolomide. Front Genet 2019; 10:910. [PMID: 31611911 PMCID: PMC6776832 DOI: 10.3389/fgene.2019.00910] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 08/28/2019] [Indexed: 12/22/2022] Open
Abstract
Glioblastoma (GBM) is the most malignant glioma, with a median overall survival (OS) of 14–16 months. Temozolomide (TMZ) is the first-line chemotherapy drug for glioma, but whether TMZ should be withheld from patients with GBMs that lack O6-methylguanine-DNA methyltransferase (MGMT) promoter methylation is still under debate. DNA methylation profiling holds great promise for further stratifying the responses of MGMT promoter unmethylated GBMs to TMZ. In this study, we studied 147 TMZ-treated MGMT promoter unmethylated GBM, whose methylation information was obtained from the HumanMethylation27 (HM-27K) BeadChips (n = 107) and the HumanMethylation450 (HM-450K) BeadChips (n = 40) for training and validation, respectively. In the training set, we performed univariate Cox regression and identified that 3,565 CpGs were significantly associated with the OS of the TMZ-treated MGMT promoter unmethylated GBMs. Functional analysis indicated that the genes corresponding to these CpGs were enriched in the biological processes or pathways of mitochondrial translation, cell cycle, and DNA repair. Based on these CpGs, we developed a 31-CpGs methylation signature utilizing the least absolute shrinkage and selection operator (LASSO) Cox regression algorithm. In both training and validation datasets, the signature identified the TMZ-sensitive GBMs in the MGMT promoter unmethylated GBMs, and only the patients in the low-risk group appear to benefit from the TMZ treatment. Furthermore, these identified TMZ-sensitive MGMT promoter unmethylated GBMs have a similar OS when compared with the MGMT promoter methylated GBMs after TMZ treatment in both two datasets. Multivariate Cox regression demonstrated the independent prognostic value of the signature in TMZ-treated MGMT promoter unmethylated GBMs. Moreover, we also noticed that the hallmark of epithelial–mesenchymal transition, ECM related biological processes and pathways were highly enriched in the MGMT unmethylated GBMs with the high-risk score, indicating that enhanced ECM activities could be involved in the TMZ-resistance of GBM. In conclusion, our findings promote our understanding of the roles of DNA methylation in MGMT umethylated GBMs and offer a very promising TMZ-sensitivity predictive signature for these GBMs that could be tested prospectively.
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1222
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Wu F, Ma C, Han B, Meng L, Hu H, Fang Y, Feng M, Zhang X, Rueppell O, Li J. Behavioural, physiological and molecular changes in alloparental caregivers may be responsible for selection response for female reproductive investment in honey bees. Mol Ecol 2019; 28:4212-4227. [DOI: 10.1111/mec.15207] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 07/31/2019] [Accepted: 07/31/2019] [Indexed: 12/16/2022]
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1223
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Kuang XZ, Xiao WJ, Teng Z, Pan H, Yuan ZA, Wu F, Zhang X. [Pathogenic characteristics of viral gastroenteritis among pediatric inpatients under five years old during 2014-2017]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 2019; 40:895-899. [PMID: 31484250 DOI: 10.3760/cma.j.issn.0254-6450.2019.08.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To conduct a viral pathogen surveillance program on pediatric inpatients less than five years old with acute gastroenteritis in Shanghai and to better understand the pathogenic spectrum and molecular features in the target population, for setting up programs on control, prevention, medication and vaccine applications of the diseases. Methods: Fecal samples were collected from inpatients less than 5 years old who were admitted to a pediatric hospital for having acute gastroenteritis. Information related to demographic, clinical and epidemiological features of the patients was also collected. Laboratory assays including ELISA, real-time PCR and nested PCR, were performed to detect the presence of pathogens as rotavirus, calicivirus, astrovirus and adenovirus. Results: A total of 1 018 samples were collected (male 671 and 347 female), with the positive detection rate as 40.57% which peaked from autumn till winter, annually. Calicivirus and rotavirus A presented with the highest detection rates (24.75% and 13.95% respectively). The lowest detection rate was found in the 0-6 month-olds (32.20%). 65% of the patients with positive virus had received antibiotic treatment prior to the hospitalization. However, no statistically significant difference was seen, regarding the rates of antibiotic medication in the virus positive or negative populations (P>0.05). Data from the Rotavirus genotype analysis revealed that G9P[8] genotype was the predominant strain, and causing majority of rotavirus infections in all the age groups. Conclusions: Among the inpatients under 5 years of age in Shanghai, the positive detection rate for Calicivirus was higher than that for rotavirus group A, suggesting the necessity to carefully monitor the changes regarding the pathogenic spectrum and subtypes of the virus. Antibiotics should also be attentively administered, together with the development of suitable vaccine.
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1224
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Kong DC, Wu HY, Zheng YX, Pan H, Jiang CY, Zhang X, Chen J, Wu F. [Etiologic and epidemiologic features of acute respiratory infections in adults from Shanghai, during 2015-2017]. ZHONGHUA LIU XING BING XUE ZA ZHI = ZHONGHUA LIUXINGBINGXUE ZAZHI 2019; 40:904-910. [PMID: 31484252 DOI: 10.3760/cma.j.issn.0254-6450.2019.08.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the etiologic and epidemiological characteristics of adult acute respiratory infections in Shanghai during 2015-2017. Methods: Data was collected from outpatients with acute respiratory infections who visited the Fever Clinics in three hospitals of different levels in three administrative regions of Shanghai, from 2015 to 2017. Basic information and nasopharyngeal swabs were collected from cases in line with the inclusion criteria. Multiplex RT-PCR and bacterial cultures were performed to detect the respiratory pathogens. Results: A total of 806 individuals were enrolled from 2015 to 2017. Respiratory pathogens were identified in 73.45% (592/806) of the cases, with the virus detection rate as 66.75% (538/806). It was found that the major respiratory pathogens for virus detection were influenza A in 326 (40.45%), influenza B in 116 (14.39%), rhinovirus/enterovirus in 39 (4.84%) of the cases. The overall detection rate of bacteria was 16.13% (130/806), including Klebsiella pneumoniae in 90 (11.17%) cases, Staphylococcus Aureus in 46 (5.71%) cases. Other kind of bacteria were not detected in our study. The detection rates on Mycoplasma pneumoniae was 5.33% (43/806) and on Chlamydia pneumonia was 0.37% (3/806). Co-infection with multiple pathogens was detected in 18.61% (150/806) of the cases, including 135 with double infection (accounting for 90.00%), 14 with triple infection and 1 with quadruple infection (accounted for 9.33% and 0.67%, respectively). Among the 150 cases with co-infections, the main identified pathogens were influenza A, Klebsiella pneumoniae, Staphylococcus aureus, and Mycoplasma pneumoniae. Pathogens of acute respiratory infections that identified among the outpatients from the Fever Clinics at different time, region or population, the characteristics were different (P<0.001). Conclusions: In 2015-2017, outpatients with acute respiratory infections in Shanghai were mainly caused by influenza virus or other viruses, however dynamically with its composition, time, region and characteristics of the population. It is necessary to strengthen and combine related medical and preventive services and to develop the appropriate strategies regarding clinical diagnosis and treatment.
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1225
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Chowdhury S, Chen M, Eckert R, Ren D, Wu F, Repina N, Waller L. High-resolution 3D refractive index microscopy of multiple-scattering samples from intensity images. OPTICA 2019; 6:1211-1219. [PMID: 38515960 PMCID: PMC10956703 DOI: 10.1364/optica.6.001211] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 08/01/2019] [Indexed: 03/23/2024]
Abstract
Optical diffraction tomography (ODT) reconstructs a sample's volumetric refractive index (RI) to create high-contrast, quantitative 3D visualizations of biological samples. However, standard implementations of ODT use interferometric systems, and so are sensitive to phase instabilities, complex mechanical design, and coherent noise. Furthermore, their reconstruction framework is typically limited to weakly scattering samples, and thus excludes a whole class of multiple-scattering samples. Here, we implement a new 3D RI microscopy technique that utilizes a computational multi-slice beam propagation method to invert the optical scattering process and reconstruct high-resolution (NA > 1.0) 3D RI distributions of multiple-scattering samples. The method acquires intensity-only measurements from different illumination angles and then solves a nonlinear optimization problem to recover the sample's 3D RI distribution. We experimentally demonstrate the reconstruction of samples with varying amounts of multiple-scattering: a 3T3 fibroblast cell, a cluster of C. elegans embryos, and a whole C. elegans worm, with lateral and axial resolutions of ≤ 240 nm and ≤ 900 nm, respectively. The results of this work lays groundwork for future studies into using optical wavelengths to probe 3D RI distributions of highly scattering biological organisms.
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