464 results on '"Xuan, Deng"'
Search Results
52. An Experimental Study Measuring the Image Field Angle of an Electron Beam Using a Streak Tube
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Houzhi Cai, Xuan Deng, Lihong Niu, Qinlao Yang, and Jingjin Zhang
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ICF experiments ,streak tube ,electron beam ,image field angle ,Applied optics. Photonics ,TA1501-1820 - Abstract
The final stage of an inertial confinement fusion (ICF) experiment requires the diagnostic instruments to have the ability to obtain multiple images with high spatiotemporal resolution due to its extremely short duration. However, the influence of field curvature in the streak tube may lead to resolution differences between each image from single line-of-sight (SLOS) technology. In order to achieve high-precision adaptive adjustments, the direction and depth of adjustment should be determined rapidly, which means that the diagnostic instrument must work within the image depth of field of its detector imaging system, requiring it to measure the image field angle of the electron beam. Here, a method based on the streak tube using the combination of planar and spherical fluorescent screens to directly calculate the image field angle of the electron beam from the rear image quality has been proposed for the first time, and its effectiveness has been proved by experiments. It is expected to provide a basis for the diagnostic equipment in ICF experiments to achieve adaptive high-precision adjustment of the focusing voltage to obtain a series of high-resolution images.
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- 2023
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53. Design and Experimental Study of a Large Beam Waist Streak Tube in an ICF Experiment
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Hou-zhi Cai, Xuan Deng, Li-hong Niu, Qin-lao Yang, and Jing-jin Zhang
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X-ray ,streak tube ,multi-frame ,in situ framing ,Chemical technology ,TP1-1185 - Abstract
In order to realize in situ multi-frame framing, this paper designed and developed a large-waist framing converter tube. The size ratio between the waist and the object was about 1.16:1. The subsequent test results showed that the static spatial resolution of the tube could reach 10 lp/mm (@ 72.5%) under the premise of this adjustment, and the transverse magnification could reach 2.9. Once the MCP (Micro Channel Plate) traveling wave gating unit is equipped at the output end, it is expected to promote the further development of in situ multi-frame framing technology.
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- 2023
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54. Assessing COVID-19 Vaccine Booster Hesitancy Using the Modified 5C Scale in Zhejiang Province, China: A Cross-Sectional Study
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Xuan Deng, Yuchen Zhao, Shenyu Wang, Hanqing He, Zhiping Chen, Yang Zhou, Rui Yan, Xuewen Tang, Yao Zhu, and Xiaoping Xu
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COVID-19 vaccines ,booster ,vaccine hesitancy ,China ,5C scale ,Medicine - Abstract
Following the rollout of a booster campaign to promote immunity against COVID-19 in China, this study aimed to assess booster hesitancy among adults who were fully vaccinated with primary doses across Zhejiang Province. Firstly, the modified 5C scale developed by a German research team was assessed for reliability and validity via a pre-survey in Zhejiang Province. Then, a 30-item questionnaire was established to conduct online and offline surveys during 10 November to 15 December 2021. Demographic characteristics and information on previous vaccination experience, vaccine type of primary doses, attitudes towards booster doses and awareness of SARS-CoV-2 infection were collected. Chi-square tests, pairwise comparison and multivariate logistic regression were performed in data analysis. In total, 4039 valid questionnaires were analyzed, with booster hesitancy of 14.81%. Dissatisfaction with previous vaccination experience of primary doses (ORs = 1.771~8.025), less confidence in COVID-19 vaccines (OR = 3.511, 95%CI: 2.874~4.310), younger age compared to the elderly aged 51–60 years old (2.382, 1.274~4.545), lower education level (ORs = 1.707~2.100), weaker awareness of social responsibility of prevention and control of COVID-19 (1.587, 1.353~1.859), inconvenience of booster vaccination (1.539, 1.302~1.821), complacency regarding vaccine efficacy as well as self-health status (1.224, 1.056~1.415) and excessive trade-offs before vaccination (1.184, 1.005~1.398) were positively associated with booster hesitancy. Therefore, intelligent means should be strengthened to optimize vaccination services. More influential experts and other significant figures should be supported to promote timely evidence-based information via various media platforms to reduce public hesitancy and increase booster uptake.
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- 2023
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55. Risk factors of osimertinibrelated cardiotoxicity in non-small cell lung cancer.
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Yunlong Wang, Xuan Deng, Qinggui Qiu, and Mengchao Wan
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NON-small-cell lung carcinoma ,CARDIOTOXICITY ,BODY mass index ,NEOVASCULARIZATION inhibitors ,DISEASE risk factors - Abstract
Objective: To investigate the risk factors associated with cardiotoxicity in patients with non-small cell lung cancer (NSCLC) treated with osimertinib. Methods: A total of 268 patients with NSCLC treated with osimertinib in our hospital from June 2019 to December 2023 were selected to observe the occurrence of cardiotoxicity and were divided into cardiotoxicity group and non-cardiotoxicity group. The differences in age, gender, body mass index (BMI), smoking, alcohol consumption, tumor stage, hypertension, diabetes, hyperlipidemia, chemotherapy, radiotherapy, antiangiogenic drugs, and osimertinib treatment time were recorded and analyzed. Logistic regression was used to analyze the risk factors for cardiotoxicity in patients with nonsmall cell lung cancer caused by osimertinib treatment. Results: Among the 268 patients with NSCLC treated with osimertinib, 58 patients developed cardiotoxicity, and the incidence of cardiotoxicity was 21.64%. There were statistically significant differences between the cardiotoxicity group and the non-cardiotoxicity group in terms of smoking history, hyperlipidemia history, combined chemotherapy, and combined radiotherapy (P < 0.05). Further analysis showed that patients with a smoking history were at increased risk of cardiotoxicity compared with non-smoking patients (OR = 2.569, 95% CI = 1.398-6.523). Patients with hyperlipidemia were at increased risk of cardiotoxicity compared with those without hyperlipidemia (OR = 3.412, 95% CI = 2.539-7.628). Patients with chemotherapy were at increased risk of cardiotoxicity compared with those without combination chemotherapy (OR = 2.018, 95% CI = 1.426-4.517). Patients undergoing radiotherapy to the left chest were at increased risk of cardiotoxicity compared with those without combined radiotherapy (OR = 1.629, 95% CI = 1.273-4.206). Conclusion: The incidence of cardiotoxicity in patients with NSCLC is high due to osimertinib treatment. A history of smoking, hyperlipidemia, combination chemotherapy, and radiotherapy to the left chest are independent risk factors for cardiotoxicity in patients with NSCLC treated with osimertinib. [ABSTRACT FROM AUTHOR]
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- 2024
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56. Enhancing Quality for VVC Compressed Videos by Jointly Exploiting Spatial Details and Temporal Structure.
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Xiandong Meng, Xuan Deng, Shuyuan Zhu, and Bing Zeng
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- 2019
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57. Association of Human Whole Blood NAD+ Contents With Aging
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Fan Yang, Xuan Deng, Ye Yu, Lei Luo, Xianda Chen, Jinping Zheng, Yugang Qiu, Feng Xiao, Xiaomei Xie, Yuzheng Zhao, Jun Guo, Feifei Hu, Xuguang Zhang, Zhenyu Ju, and Yong Zhou
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Nicotinamide adenine dinucleotide ,whole blood NAD+ ,aging ,gender-difference ,NAD+ ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
BackgroundNAD+, nicotinamide adenine dinucleotide, is mostly described to associate with the aging process. We aimed to investigate the association between human whole blood NAD+ contents and aging in a relative large-scale community-based population and further to address the gender impact on this association.MethodsWe recruited 1,518 participants aged over 18 years old and free of cardiovascular and any type of cancer from the Jidong community from 2019 to 2020. Whole blood NAD+ level was measured by cycling assay and LC-mass spectroscopy assay. The chronological age and clinical data were collected using standard questionnaires. The participants were divided into five groups according to their chronological age. General liner regression model was performed to analyze the association between NAD+ contents and aging. In addition, we also conducted subgroup analysis by gender.ResultsThe mean age of included 1,518 participants was 43.0 years, and 52.6% of them were men. The average levels of whole blood NAD+ of total participants was 33.0 ± 5.5 μmol/L. The whole blood NAD+ contents in men were significantly higher than that in women (34.5 vs. 31.3 μmol/L). There was significant difference in the meat diet among NAD+ quartile groups (p = 0.01). We observed a decline trend of NAD+ contents with aging before 50 years in total participants with significant level in 40–49 years old group (β coefficients with 95% confidence interval (95% CI): −1.12 (−2.18, −0.06)), while this trend disappeared after the 50 years. In addition, this association was significantly altered by gender (p for interaction = 0.003). In men, as compared with ≤29 years group, adjusted β coefficient decreased with aging but was only significant in the ≥60 year group (β,−2.16; 95% CI, −4.16 to −0.15). In females, the level of whole blood NAD+ did not significantly differ among five age groups and without the trend as males.ConclusionsAssociation of whole blood NAD+ contents with aging significantly differed in males and females. The loss of blood NAD+ with aging only was observed in males, especially in the male middle-aged population. It is crucial to consider the gender difference in further NAD+ related studies in the future.
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- 2022
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58. Cost-effectiveness of augmenting universal hepatitis B vaccination with immunoglobulin treatment: a case study in Zhejiang Province, East China
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Yanbing Zeng, Mingliang Luo, Jianlin Lin, Hanqing He, Xuan Deng, Shuyun Xie, and Ya Fang
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hepatitis b ,mother-to-child ,infection ,cost-effectiveness ,qaly ,Immunologic diseases. Allergy ,RC581-607 ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Objective To evaluate the cost-effectiveness of the current strategy combining universal vaccination with hepatitis B immunoglobulin (HBIG) treatment for infants of hepatitis B surface antigen (HBsAg) positive mothers compared with universal vaccination with hepatitis B vaccine only. Methods A decision tree model with a Markov process was constructed and used to simulate the lifetime of the birth cohort in Zhejiang Province during 2016. The current strategy was compared against universal vaccination with respect to costs and health effects. Costs were assessed from the health care system perspective. Health effects were measured by the number of hepatitis B virus (HBV) related diseases and deaths avoided and quality-adjusted life-years (QALYs) gained. The incremental cost‑effectiveness ratio (ICER) is calculated and compared to standard willingness-to-pay thresholds. A one-way sensitivity analysis and a probabilistic sensitivity analysis (PSA) were performed to assess parameter uncertainties. Results Over the cohort’s lifetime, 182 acute symptomatic infections, 2215 chronic infections, 872 cases of cirrhosis, 595 cases of hepatocellular carcinoma (HCC) and 1,350 HBV-related deaths among the cohort of 624,000 infants would be further avoided by the current strategy compared to universal vaccination. Universal vaccination was dominated by the current strategy that produced not only higher total QALYs, but also had lower costs. The results remained robust over a wide range of assumptions. Conclusions The current strategy was cost saving compared to universal vaccination, and continuing the current strategy is recommended to further decrease the burden of hepatitis B.
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- 2020
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59. Mutation profiles of classic myeloproliferative neoplasms detected by a customized next-generation sequencing-based 50-gene panel
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Xiu Huang, Jiawei Wu, Xuan Deng, Xiao Xu, Xinju Zhang, Weizhe Ma, Tingting Hu, Jianmin Yang, Ming Guan, and Gusheng Tang
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Medicine ,Biology (General) ,QH301-705.5 - Abstract
Abstract. Objective:. A sequencing panel consisting of 50 genes was customized to reveal the potential molecular land-scapes of essential thrombocytosis, polycythemia vera, and primary myelofibrosis in Chinese patients with myeloproliferative neoplasm (MPN). Methods:. Sixty-five MPN patients (38 with essential thrombocytosis, 21 with polycythemia vera, and 6 with primary myelofibrosis), including 12 triple-negative patients, were recruited and were screened for their mutational spectrum using next-generation sequencing technology in this retrospective observational study. This study was approved by the Institutional Review Board of Changhai Hospital, Naval Military Medical University, China. Results:. In addition to the typical driver mutations in JAK2, CALR, and MPL, pathogenic mutations in 15 other genes were frequently detected among the 65 patients with MPN. The 15 mutated genes were TET2, EZH2, ASXL1, MIR662, MLH1, MLH3, SF3B1, MSH6, BARD1, DNMT3A, KIT, MSH2, RUNX1, TP53, and NRAS in this order according to the mutational frequency detected. The average number of mutated genes was 1.2 genes per patient, while in the 12 triple-negative patients with MPN (ie, patients that lack the JAK2, CALR, or MPL mutations), at least one of the 15 pathogenic mutations was detected for each patient. Interestingly, 4 single nucleotide polymorphisms (rs4858647, rs9376092, rs58270997, rs621940) that might be correlated to individual susceptibility to myeloproliferative neoplasm were identified among the 65 patients. We also found that single nucleotide polymorphism and/or single nucleotide variation mutations occurred in multiple loci of mismatch repair-related genes, which might contribute to the development of MPN. Conclusion:. Our study confirms the importance of the previously known MPN relative genes and, more importantly, provides some new and potentially valuable information about mutations associated with MPNs.
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- 2020
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60. Analysis and Validation of Hub Genes in Blood Monocytes of Postmenopausal Osteoporosis Patients
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Yi-Xuan Deng, Wen-Ge He, Hai-Jun Cai, Jin-Hai Jiang, Yuan-Yuan Yang, Yan-Rong Dan, Hong-Hong Luo, Yu Du, Liang Chen, and Bai-Cheng He
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postmenopausal osteoporosis ,microarray ,enrichment analysis ,hub genes ,OVX ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
Osteoporosis is a common systemic bone disease caused by the imbalance between osteogenic activity and osteoclastic activity. Aged women are at higher risk of osteoporosis, partly because of estrogen deficiency. However, the underlying mechanism of how estrogen deficiency affects osteoclast activity has not yet been well elucidated. In this study, GSE2208 and GSE56815 datasets were downloaded from GEO database with 25 PreH BMD women and 25 PostL BMD women in total. The RRA algorithm determined 38 downregulated DEGs and 30 upregulated DEGs. Through GO analysis, we found that downregulated DEGs were mainly enriched in myeloid cell differentiation, cytokine-related functions while upregulated DEGs enriched in immune-related biological processes; pathways like Notch signaling and MAPK activation were found in KEGG/Rectome pathway database; a PPI network which contains 66 nodes and 91 edges was constructed and three Modules were obtained by Mcode; Correlation analysis helped us to find highly correlated genes in each module. Moreover, three hub genes FOS, PTPN6, and CTSD were captured by Cytohubba. Finally, the hub genes were further confirmed in blood monocytes of ovariectomy (OVX) rats by real-time PCR assay. In conclusion, the integrative bioinformatics analysis and real-time PCR analysis were utilized to offer fresh light into the role of monocytes in premenopausal osteoporosis and identified FOS, PTPN6, and CTSD as potential biomarkers for postmenopausal osteoporosis.
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- 2022
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61. Non-alcoholic Fatty Liver Disease and Longitudinal Cognitive Changes in Middle-Aged and Elderly Adults
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Qi Liu, Chang Liu, Feifei Hu, Xuan Deng, and Yumei Zhang
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longitudinal study ,non-alcoholic fatty liver disease ,cognitive impairment ,middle-aged and older populations ,risk factors ,Medicine (General) ,R5-920 - Abstract
Background and PurposeNon-alcoholic fatty liver disease (NAFLD) and cognitive impairment are common aging-related disorders. This study aims to explore the changes of cognitive function in middle-aged and elderly population with NAFLD from a Jidong impairment cohort.MethodsA total of 1,651 middle-aged and elderly participants (>40 years) without cognitive impairment were recruited into the current study in 2015 and were followed up until to 2019. Abdominal ultrasonography was used for diagnosis of NAFLD. Global cognitive function was assessed with the Mini-Mental State Examination (MMSE). Cognitive impairment was defined as a score
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- 2022
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62. The Epidemiology of Meningococcal Disease and Carriage, Genotypic Characteristics and Antibiotic Resistance of Neisseria meningitidis Isolates in Zhejiang Province, China, 2011–2021
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Yunyi Zhang, Xuan Deng, Yan Jiang, Junyan Zhang, Li Zhan, Lingling Mei, Hangjing Lu, Pingping Yao, and Hanqing He
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meningococcal disease ,carriage ,epidemiology ,antibiotic resistance ,Neisseria meningitidis ,multilocus sequence typing (MLST) ,Microbiology ,QR1-502 - Abstract
Neisseria meningitidis (Nm) remains a worldwide leading cause of epidemic meningitis. During 2011–July 2021, 55 meningococcal disease (MD) cases were reported with a case fatality rate of 5.45% in Zhejiang Province, China. The median age was 7 years. The annual incidence was 0.0017–0.0183 per 100,000 population. The highest age-specific incidence was observed in the group younger than 1 year. Serogroup was identified in 30 laboratory-confirmed MD cases, and MenB was most predominant. MenB was mainly observed in two age groups: younger than 5 and older than 35 years. MenB incidence was significantly increasing from 0.0018 per 100,000 in 2013 to 0.0070 per 100,000 in 2019. During 2015–2020, 17 positive samples were detected from 2,827 throat swabs from healthy population, of which 70.59% was MenB. Twenty multilocus sequence typing sequence types (STs) containing eight newly assigned STs (ST15881–ST15888) were determined in all Nm isolates. Either in MD cases or in healthy population, MenB CC ST-4821 was the predominant ST. It was worth noting that two MenY CC ST-23 cases occurred in 2019 and 2021, respectively. MenY CC ST-23 MD cases increased gradually in China. Phylogeny results based on genome sequencing indicated that Chinese MenW CC ST-11 isolates were genetically linked and grouped together with Japanese isolates, separated from MenW CC ST-11 isolates from Saudi Arabia Hajj outbreak, Europe, South Africa, South America, North America, and Oceania. MenW CC ST-11 isolates from East Asia might have evolved locally. Antibiotic susceptibility tests revealed a relatively high resistance rate (22.86%) of Nm isolates to penicillin. This study provided valuable data for Chinese public health authorities to grasp the temporal epidemiological characteristics of MD and healthy carriage.
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- 2022
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63. Application Effect of External and Internal Elevation of Maxillary Sinus in Implant Restoration of Posterior Maxilla
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Xuan Deng, Rujie Shi, Jia Zhan, and Fang Yang
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Medical emergencies. Critical care. Intensive care. First aid ,RC86-88.9 - Abstract
Objective. To explore and analyze the application effect of external and internal elevation of the maxillary sinus in implant restoration of the posterior maxilla. Methods. A total of 84 patients undergoing implant restoration of the posterior maxilla in the hospital were enrolled between January 2019 and March 2021. According to the random number table method, they were divided into the observation group (n = 42) and the control group (n = 42). The control group underwent external elevation of the maxillary sinus, while the observation group underwent internal elevation of the maxillary sinus. At 6 h, 12 h, and 24 h after surgery, the pain degree between the two groups was compared. All were followed up at 6 months after surgery. The osseointegration (bone resorption around implants, elevation height of maxillary sinus floor, average healing time) and soft tissues (bleeding index, plaque index, probing depth) in both groups were observed. The occurrence of postoperative complications was recorded. Results. At 6 h, 12 h, and 24 h after surgery, VAS scores in the observation group were significantly lower than those in the control group (P0.05). Conclusion. The application effect of internal elevation of the maxillary sinus is good in implant restoration of the posterior maxilla, which can relieve pain and swelling and improve implant effect.
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- 2022
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64. Rheumatic Manifestations and Diseases From Immune Checkpoint Inhibitors in Cancer Immunotherapy
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Pan Shen, Xuan Deng, Zhishuo Hu, Zhe Chen, Yao Huang, Ke Wang, Kai Qin, Ying Huang, Xin Ba, Jiahui Yan, Liang Han, and Shenghao Tu
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rheumatic diseases ,immune-related adverse events ,immune checkpoint inhibitors ,arthritis ,myositis ,vasculitis ,Medicine (General) ,R5-920 - Abstract
Immune checkpoint inhibitors (ICIs), which can enhance antitumor immunity and inhibit cancer growth, have revolutionized the treatment of multiple cancers and dramatically decreased mortality. However, treatment with ICIs is directly associated with immune-related adverse events (irAEs) because of inflammation in off-target organs and autoimmunity resulting from non-specific immune activation. These irAEs can cause rheumatic diseases and manifestations such as inflammatory arthritis, polymyalgia rheumatica, myositis, vasculitis, Sicca and Sjogen's syndrome, and systemic lupus erythematosus. Early diagnosis and treatment of these adverse events will improve outcomes and quality of life for cancer patients. The treatment of rheumatic diseases induced by ICIs requires multidisciplinary cooperation among physicians. Furthermore, the underlying mechanisms are not fully understood and it is difficult to predict and evaluate these side effects precisely. In this review, we summarize available studies and findings about rheumatic irAEs, focusing mainly on the clinical manifestations, epidemiology, possible mechanisms, and guiding principles for treating these irAEs.
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- 2021
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65. SIRT1: A Potential Therapeutic Target in Autoimmune Diseases
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Pan Shen, Xuan Deng, Zhe Chen, Xin Ba, Kai Qin, Ying Huang, Yao Huang, Tingting Li, Jiahui Yan, and Shenghao Tu
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autoimmune diseases ,SIRT1 ,inflammation ,rheumatoid arthritis ,systemic lupus erythematosus ,Immunologic diseases. Allergy ,RC581-607 - Abstract
The morbidity and mortality of autoimmune diseases (Ads) have been increasing worldwide, and the identification of novel therapeutic strategies for prevention and treatment is urgently needed. Sirtuin 1 (SIRT1), a member of the class III family of nicotinamide adenine dinucleotide (NAD+)-dependent histone deacetylases, has been reported to participate in the progression of several diseases. SIRT1 also regulates inflammation, oxidative stress, mitochondrial function, immune responses, cellular differentiation, proliferation and metabolism, and its altered functions are likely involved in Ads. Several inhibitors and activators have been shown to affect the development of Ads. SIRT1 may represent a novel therapeutic target in these diseases, and small molecules or natural products that modulate the functions of SIRT1 are potential therapeutic agents. In the present review, we summarize current studies of the biological functions of SIRT1 and its role in the pathogenesis and treatment of Ads.
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- 2021
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66. Research on the influence of cathode surface topography on spark discharge
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Dangshu Wang, Jiaan Yi, Jianan Lou, Xuan Deng, Shulin Liu, Xinxia Wang, Zhen Dong, and Yaqiang Yang
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Physics ,QC1-999 - Abstract
To obtain the relation between spark discharges and the topography of electrode surfaces, some models, such as a micro-initial model of cone and spherical head cylinder, generated from the scanning of a scanning electron microscope are introduced. Based on the principles of energy conservation and thermal equilibrium, the second-order non-homogeneous differential equation is established. The relationships between the temperature of the cathode surface and the distance from the top of micro-protrusions, the cone angle, and the radius of the ball head are derived from a set of second-order non-homogeneous differential equations. When introduced electron emission theory, the main emission type at the initial stage of the discharge is electron field emission. As the discharge progresses, the Joule heat generated by the emission current will cause thermionic emission. During this progress, the emission current density gradually increases. When the temperature of the cathode surface reaches the melting point of the cathode metal, the current density will increase sharply. Observed from the discharge, the temperature of the cathode surface is inversely proportional to the cone angle and the radius of the ball head maintains a gradually decreasing slope. It is proportional to micro-protrusions maintaining a gradually increasing slope. When the cone angle is less than 12° and the radius of the ball head is less than 0.04 µm, the temperature of the cathode surface changes more dramatically. Through this study, a further understanding of factors that affect the density of cathode current emission can be obtained, which is of great significance to improve the capacity of cathode emission.
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- 2021
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67. Single-cell transcriptome analysis of diffuse large B cells in cerebrospinal fluid of central nervous system lymphoma
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Haoyu Ruan, Zhe Wang, Yue Zhai, Ying Xu, Linyu Pi, Jihong Zheng, Yihang Zhou, Cong Zhang, Ruofan Huang, Kun Chen, Xiangyu Li, Weizhe Ma, Zhiyuan Wu, Jie Shen, Xuan Deng, Chao Zhang, and Ming Guan
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Biological sciences ,Neuroscience ,Immunology ,Bioinformatics ,Omics ,Science - Abstract
Summary: Diffuse large B cells in the cerebrospinal fluid (CSF-DLBCs) have offered great promise for the diagnostics and therapeutics of central nervous system lymphoma (CNSL) leptomeningeal involvement. To explore the phenotypic states of CSF-DLBCs, we analyzed the transcriptomes of more than one thousand CSF-DLBCs from six patients with CNSL diffuse large B-cell lymphoma (DLBCL) using Smart-seq2 single-cell RNA sequencing. CSF-DLBCs were defined based on abundant expression of B-cell markers, the active cell proliferation and energy metabolism properties, and immunoglobulin light chain restriction. We identified inherent heterogeneity of CSF-DLBCs, which were mainly manifested in cell cycle state, cancer-testis antigen expression, and classification based on single-cell germinal center B-cell signature. In addition, the 16 upregulated genes in CSF-DLBCs compared to various normal B cells showed great possibility in the homing effect of the CNS-DLBCL for the leptomeninges. Our results will provide insight into the mechanism research and diagnostic direction of CNSL-DLBCL leptomeningeal involvement.
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- 2021
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68. Kernel Minimum Noise Fraction Transformation-Based Background Separation Model for Hyperspectral Anomaly Detection
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Tianru Xue, Jianxin Jia, Hui Xie, Changxing Zhang, Xuan Deng, and Yueming Wang
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anomaly detection (AD) ,background separation model (BSM) ,feature extraction ,hyperspectral images (HSIs) ,normalized Euclidean distance (NED) ,Science - Abstract
A significant challenge in methods for anomaly detection (AD) in hyperspectral images (HSIs) is determining how to construct an efficient representation for anomalies and background information. Considering the high-order structures of HSIs and the estimation of anomalies and background information in AD, this article proposes a kernel minimum noise fraction transformation-based background separation model (KMNF-BSM) to separate the anomalies and background information. First, spectral-domain KMNF transformation is performed on the original hyperspectral data to fully mine the high-order correlation between spectral bands. Then, a BSM that combines the outlier removal, the iteration strategy, and the Reed–Xiaoli detector (RXD) is proposed to obtain accurate anomalous and background pixel sets based on the extracted features. Finally, the anomalous and background pixel sets are used as input for anomaly detectors to improve the background suppression and anomaly detection capabilities. Experiments on several HSIs with different spatial and spectral resolutions over different scenes are performed. The results demonstrate that the KMNF-BSM-based algorithms have better target detectability and background suppressibility than other state-of-the-art algorithms.
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- 2022
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69. High or low temperature extraction, which is more conducive to Triphala against chronic pharyngitis?
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Fei Ran, Xue Han, Xuan Deng, Zhenfeng Wu, Haozhou Huang, Ming Qiu, Jiao Song, Xichuan Wei, Dingkung Zhang, Yu Wang, Sanhu Fan, Junzhi Lin, and Li Han
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Triphala ,Decompressing inner ebullition ,Reflux extraction ,Chronic pharyngitis ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Objective: Explore the effects of high-temperature reflux extraction and low-temperature decompressing inner ebullition on Triphala's chemical composition and anti-chronic pharyngitis activity. Methods: The network pharmacology was used to analyze the material basis, targets and pathways of Triphala for chronic pharyngitis. HPLC were used to compare the fingerprint profile and content of components between the two extracts. The antioxidant and anti-chronic pharyngitis activities of the two extracts were compared by DPPH assay and ammonia induced chronic pharyngitis model in rats. Results: The network pharmacology results showed that the active ingredients of Triphala for chronic pharyngitis are epigallocatechin-3-gallate, (+)-catechin, epicatechin, epicatechin gallate, (+)-gallocatechin, quercetin, luteolin, leucodelphinidin and other flavonoids; phenolic acids such as gallic acid and ellagic acid; alkaloids such as ellipticine, cheilanthifoline; hydrolyzed tannins such as corilagin and chebulic acid. The high-temperature reflux extract and the low-temperature decompressing inner ebullition extract have extremely significant differences in the fingerprint profile. Among them, the content of gallic acid, ellagic acid, chebulic acid, catechin, epicatechin, corilagin, quercetin, and epicatechin gallate in the reflux extract is 1.1–5.3 times as much as decompressing inner ebullition extract. The free radical scavenging ability of reflux extract is significantly stronger than that of decompression extract (p
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- 2021
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70. Separated parabiont reveals the fate and lifespan of peripheral-derived immune cells in normal and ischaemia-induced injured kidneys
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Xuan Deng, Cheng Zhou, Ruichun Liao, Yi Guo, Yuxi Wang, Guoli Li, Jianliang Wu, Huzi Xu, Zhizhi Hu, Guangchang Pei, Wenhui Liao, Ying Yao, Qian Yang, Rui Zeng, and Gang Xu
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immune cells ,acute kidney injury ,chronic kidney disease ,parabiosis ,lifespan ,Biology (General) ,QH301-705.5 - Abstract
Immune cell infiltration plays a key role in acute kidney injury (AKI) to chronic kidney disease (CKD) progression. T lymphocytes, neutrophils, monocytes/macrophages and other immune cells regulate inflammation, tissue remodelling and repair. To determine the kinetics of accumulation of various immune cell populations, we established an animal model combining parabiosis and separation surgery to explore the fate and lifespan of peripheral leucocytes that migrate to the kidney. We found that peripheral T lymphocytes could survive for a long time (more than 14 days), whereas peripheral neutrophils survived for a short time in both healthy and ischaemia-induced damaged kidneys. Nearly half of the peripheral-derived macrophages disappeared after 14 days in normal kidneys, while their existing time in the inflammatory kidneys was prolonged. A fraction of F4/80high macrophages were renewed from the circulating monocyte pool. In addition, we found that after renal ischaemia reperfusion, neutrophils increased significantly in the early phase, and T lymphocytes mainly accumulated in the late stage, whereas macrophages infiltrated throughout AKI-CKD progression and were sustained longer in injured as opposed to normal kidneys. In conclusion, peripheral-derived macrophages, T lymphocytes and neutrophils exhibit different lifespans in the kidney, which may play different roles during AKI-CKD progression.
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- 2021
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71. Potential Implications of Quercetin in Autoimmune Diseases
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Pan Shen, Weiji Lin, Xuan Deng, Xin Ba, Liang Han, Zhe Chen, Kai Qin, Ying Huang, and Shenghao Tu
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autoimmune diseases ,quercetin ,rheumatoid arthritis ,inflammation ,oxidative stress ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Autoimmune diseases are a worldwide health problem with growing rates of morbidity, and are characterized by breakdown and dysregulation of the immune system. Although their etiology and pathogenesis remain unclear, the application of dietary supplements is gradually increasing in patients with autoimmune diseases, mainly due to their positive effects, relatively safety, and low cost. Quercetin is a natural flavonoid that is widely present in fruits, herbs, and vegetables. It has been shown to have a wide range of beneficial effects and biological activities, including anti-inflammation, anti-oxidation, and neuroprotection. In several recent studies quercetin has reportedly attenuated rheumatoid arthritis, inflammatory bowel disease, multiple sclerosis, and systemic lupus erythematosus in humans or animal models. This review summarizes the evidence for the pharmacological application of quercetin for autoimmune diseases, which supports the view that quercetin may be useful for their prevention and treatment.
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- 2021
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72. Economic and disease burden of Japanese encephalitis in Zhejiang Province, 2013-2018.
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Xuan Deng, Rui Yan, Zi-Qiao Li, Xue-Wen Tang, Yang Zhou, and Hanqing He
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Arctic medicine. Tropical medicine ,RC955-962 ,Public aspects of medicine ,RA1-1270 - Abstract
BackgroundJapanese encephalitis (JE) is a mosquito-borne disease and associated with high mortality and disability rate among symptomatic cases. In the absence of local data, this study estimated the economic burden and the disability-adjusted life years (DALYs) due to JE in Zhejiang Province, China during 2013-2018, to increase disease awareness and provide evidence for effective health policy.Methodology/principle findingsWe merged multiple data sources, including National Notifiable Disease Registry System (NNDRS), patient interviews and medical records from corresponding hospitals for JE cases which occurred during 2013-2018 in Zhejiang Province. Direct costs were extracted from hospitals' billing systems and patient interviews. Indirect costs and disease burden were calculated based on questionnaire survey from patient interviews and follow-up assessment by general practitioners. Given under-reporting, an expansion factor (EF) was applied to extrapolate the JE burden to the provincial level. The total economic burden of JE during 2013-2018 was estimated at US $12.01 million with an EF = 3. Of this, $8.32 million was due to direct economic cost and $3.69 million to indirect cost. The disease burden of JE was 42.75 DALYs per million population (28.44 YLD, 14.28 YLL) according to the 1990 Global Burden of Disease (GBD 1990) methodology and 80.01 DALYs (53.67YLD, 26.34YLL) according to the GBD 2010 methodology. Sensitivity analysis demonstrated that the overall economic burden varied from US$ 1.73-36.42 million. The greatest variation was due to the prognosis of illness (-85.57%-203.17%), followed by occupation (-34.07%-134.12%) and age (-72.97%-47.69%).Conclusions/significanceJE imposes a heavy burden for families and society in Zhejiang Province. This study provides comprehensive empirical estimates of JE burden to increase awareness and strengthen knowledge of the public. These data may support provincial level public health decision making for prevention and control of JE. Ongoing surveillance for acute meningitis and encephalitis syndrome (AEMS) in sentinel hospitals, is needed to further refine estimates of JE burden.
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- 2021
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73. Gene-educational attainment interactions in a multi-population genome-wide meta-analysis identify novel lipid loci
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de las Fuentes, Lisa, primary, Schwander, Karen L., additional, Brown, Michael R., additional, Bentley, Amy R., additional, Winkler, Thomas W., additional, Sung, Yun Ju, additional, Munroe, Patricia B., additional, Miller, Clint L., additional, Aschard, Hugo, additional, Aslibekyan, Stella, additional, Bartz, Traci M., additional, Bielak, Lawrence F., additional, Chai, Jin Fang, additional, Cheng, Ching-Yu, additional, Dorajoo, Rajkumar, additional, Feitosa, Mary F., additional, Guo, Xiuqing, additional, Hartwig, Fernando P., additional, Horimoto, Andrea, additional, Kolčić, Ivana, additional, Lim, Elise, additional, Liu, Yongmei, additional, Manning, Alisa K., additional, Marten, Jonathan, additional, Musani, Solomon K., additional, Noordam, Raymond, additional, Padmanabhan, Sandosh, additional, Rankinen, Tuomo, additional, Richard, Melissa A., additional, Ridker, Paul M., additional, Smith, Albert V., additional, Vojinovic, Dina, additional, Zonderman, Alan B., additional, Alver, Maris, additional, Boissel, Mathilde, additional, Christensen, Kaare, additional, Freedman, Barry I., additional, Gao, Chuan, additional, Giulianini, Franco, additional, Harris, Sarah E., additional, He, Meian, additional, Hsu, Fang-Chi, additional, Kühnel, Brigitte, additional, Laguzzi, Federica, additional, Li, Xiaoyin, additional, Lyytikäinen, Leo-Pekka, additional, Nolte, Ilja M., additional, Poveda, Alaitz, additional, Rauramaa, Rainer, additional, Riaz, Muhammad, additional, Robino, Antonietta, additional, Sofer, Tamar, additional, Takeuchi, Fumihiko, additional, Tayo, Bamidele O., additional, van der Most, Peter J., additional, Verweij, Niek, additional, Ware, Erin B., additional, Weiss, Stefan, additional, Wen, Wanqing, additional, Yanek, Lisa R., additional, Zhan, Yiqiang, additional, Amin, Najaf, additional, Arking, Dan E., additional, Ballantyne, Christie, additional, Boerwinkle, Eric, additional, Brody, Jennifer A., additional, Broeckel, Ulrich, additional, Campbell, Archie, additional, Canouil, Mickaël, additional, Chai, Xiaoran, additional, Chen, Yii-Der Ida, additional, Chen, Xu, additional, Chitrala, Kumaraswamy Naidu, additional, Concas, Maria Pina, additional, de Faire, Ulf, additional, de Mutsert, Renée, additional, de Silva, H. Janaka, additional, de Vries, Paul S., additional, Do, Ahn, additional, Faul, Jessica D., additional, Fisher, Virginia, additional, Floyd, James S., additional, Forrester, Terrence, additional, Friedlander, Yechiel, additional, Girotto, Giorgia, additional, Gu, C. Charles, additional, Hallmans, Göran, additional, Heikkinen, Sami, additional, Heng, Chew-Kiat, additional, Homuth, Georg, additional, Hunt, Steven, additional, Ikram, M. Arfan, additional, Jacobs, David R., additional, Kavousi, Maryam, additional, Khor, Chiea Chuen, additional, Kilpeläinen, Tuomas O., additional, Koh, Woon-Puay, additional, Komulainen, Pirjo, additional, Langefeld, Carl D., additional, Liang, Jingjing, additional, Liu, Kiang, additional, Liu, Jianjun, additional, Lohman, Kurt, additional, Mägi, Reedik, additional, Manichaikul, Ani W., additional, McKenzie, Colin A., additional, Meitinger, Thomas, additional, Milaneschi, Yuri, additional, Nauck, Matthias, additional, Nelson, Christopher P., additional, O’Connell, Jeffrey R., additional, Palmer, Nicholette D., additional, Pereira, Alexandre C., additional, Perls, Thomas, additional, Peters, Annette, additional, Polašek, Ozren, additional, Raitakari, Olli T., additional, Rice, Kenneth, additional, Rice, Treva K., additional, Rich, Stephen S., additional, Sabanayagam, Charumathi, additional, Schreiner, Pamela J., additional, Shu, Xiao-Ou, additional, Sidney, Stephen, additional, Sims, Mario, additional, Smith, Jennifer A., additional, Starr, John M., additional, Strauch, Konstantin, additional, Tai, E. Shyong, additional, Taylor, Kent D., additional, Tsai, Michael Y., additional, Uitterlinden, André G., additional, van Heemst, Diana, additional, Waldenberger, Melanie, additional, Wang, Ya-Xing, additional, Wei, Wen-Bin, additional, Wilson, Gregory, additional, Xuan, Deng, additional, Yao, Jie, additional, Yu, Caizheng, additional, Yuan, Jian-Min, additional, Zhao, Wei, additional, Becker, Diane M., additional, Bonnefond, Amélie, additional, Bowden, Donald W., additional, Cooper, Richard S., additional, Deary, Ian J., additional, Divers, Jasmin, additional, Esko, Tõnu, additional, Franks, Paul W., additional, Froguel, Philippe, additional, Gieger, Christian, additional, Jonas, Jost B., additional, Kato, Norihiro, additional, Lakka, Timo A., additional, Leander, Karin, additional, Lehtimäki, Terho, additional, Magnusson, Patrik K. E., additional, North, Kari E., additional, Ntalla, Ioanna, additional, Penninx, Brenda, additional, Samani, Nilesh J., additional, Snieder, Harold, additional, Spedicati, Beatrice, additional, van der Harst, Pim, additional, Völzke, Henry, additional, Wagenknecht, Lynne E., additional, Weir, David R., additional, Wojczynski, Mary K., additional, Wu, Tangchun, additional, Zheng, Wei, additional, Zhu, Xiaofeng, additional, Bouchard, Claude, additional, Chasman, Daniel I., additional, Evans, Michele K., additional, Fox, Ervin R., additional, Gudnason, Vilmundur, additional, Hayward, Caroline, additional, Horta, Bernardo L., additional, Kardia, Sharon L. R., additional, Krieger, Jose Eduardo, additional, Mook-Kanamori, Dennis O., additional, Peyser, Patricia A., additional, Province, Michael M., additional, Psaty, Bruce M., additional, Rudan, Igor, additional, Sim, Xueling, additional, Smith, Blair H., additional, van Dam, Rob M., additional, van Duijn, Cornelia M., additional, Wong, Tien Yin, additional, Arnett, Donna K., additional, Rao, Dabeeru C., additional, Gauderman, James, additional, Liu, Ching-Ti, additional, Morrison, Alanna C., additional, Rotter, Jerome I., additional, and Fornage, Myriam, additional
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- 2023
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74. Economic burden and associated factors of measles patients in Zhejiang Province, China
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Xuan Deng, Hanqing He, Yang Zhou, Shuyun Xie, Ya Fang, Yanbing Zeng, Rui Yan, Xuewen Tang, and Jian Fu
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measles ,economic burden ,cost associated factors ,zhejiang province ,public health ,Immunologic diseases. Allergy ,RC581-607 ,Therapeutics. Pharmacology ,RM1-950 - Abstract
This study aimed to figure out the economic burden of measles patients and explore the associated factors for total cost in measles cases that occurred in the year 2015 from Jiaxing, Jinhua, and Taizhou cities in Zhejiang Province, China. Direct interviews were conducted to collect information on patient expenses during treatment, including outpatient expenses, hospitalization expenses, self-treatment fees, productivity loss, and transportation fees. Descriptive epidemiological methods and chi-square tests were used to assess the direct and indirect cost of measles patients. Ordinal logistic regression was applied to explore the possible factors contributing to cost. A total of 136 measles cases were investigated and the average direct cost, indirect cost, and total cost were #747.14, #520.12, and #1,267.26, respectively. Direct cost accounted for 58.96% of the total cost, which was significantly higher than the indirect cost (P < 0.001). In 2015, 1,386 confirmed cases were reported in the Zhejiang Province, and the overall direct, indirect, and total economic burden reached #1.04 million, #0.72 million, and #1.76 million, respectively. Quality-adjusted life years for measles patient were calculated to be 76.06 in Zhejiang, 2015. Hospitalization, occupation, complication, disease duration, age, and site had a significant influence on the total cost according to ordinal logistic regression, with the maximum contribution from hospitalization. Measles resulted in heavy economic burdens, and local public health departments or community health service centers should spare no effort to maintain a high rate of vaccination coverage and protect susceptible populations.
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- 2019
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75. Association of plasma macrophage colony-stimulating factor with cardiovascular morbidity and all-cause mortality in chronic hemodialysis patients
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Xuan Deng, Qian Yang, Yuxi Wang, Yi Yang, Guangchang Pei, Han Zhu, Jianliang Wu, Meng Wang, Zhi Zhao, Huzi Xu, Cheng Zhou, Yi Guo, Ying Yao, Zhiguo Zhang, Wenhui Liao, and Rui Zeng
- Subjects
M-CSF ,CVD events ,All-cause mortality ,Hemodialysis ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Abstract Background Cardiovascular disease (CVD) events are the main cause of death in long-term hemodialysis (HD) patients. Macrophage colony- stimulating factor (M-CSF) is actively involved in the formation of atherosclerosis and causes plaque instability, thrombosis and the development of acute coronary syndromes. However, little information is available on the role of M-CSF in HD patients. We aimed to investigate the association between plasma M-CSF levels and CVD events as well as all-cause mortality in patients undergoing long-term HD. Methods Fifty two HD patients and 8 healthy controls were recruited in this study. HD patients were followed up from September 2014 to May 2017. The primary end point was CVD event, the secondary outcome was death from any cause. Patients were divided into two groups with low and high M-CSF levels based on the optimal cut-off value determined by the ROC curve. Cox regression analyses were used to assess the predictive value of plasma M-CSF for CVD events and all-cause mortality in HD patients. We tested the levels of plasma M-CSF and other inflammatory cytokines in surviving HD patients using ELISA or CBA kit. Results The average plasma level of M-CSF in 52 patients was approximately twice that of healthy controls (992.4 vs. 427.2 pg/mL; p
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- 2019
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76. Circular RNA circ_0002138 is down-regulated and suppresses cell proliferation in colorectal cancer
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Haoyu Ruan, Xuan Deng, Liu Dong, Daming Yang, Ying Xu, Haixia Peng, and Ming Guan
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Circ_0002138 ,CRC ,Biomarker ,Proliferation ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Circular RNAs (circRNAs) have been recently identified as widespread and diverse endogenous noncoding RNAs that may harbor vital functions in humans. However, the role of circRNAs in the process of tumorigenesis and development of colorectal cancer (CRC) remains hitherto vague. In this study, we investigated the expression level of circ_0002138 in 35 paired CRC tissues by quantitative real-time polymerase chain reaction (qRT-PCR) and found that circ_0002138 was stably down-regulated in CRC tissues compared to paired adjacent normal tissues (P
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- 2019
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77. Lightweight Dual-Mode Soft Actuator Fabricated from Bellows and Foam Material
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Zhiwei Jiao, Zhongyu Zhuang, Yue Cheng, Xuan Deng, Ce Sun, Yuan Yu, and Fangjun Li
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foam material ,soft actuator ,pneumatic negative pressure actuation ,bellows air chamber ,dual-mode ,Materials of engineering and construction. Mechanics of materials ,TA401-492 ,Production of electric energy or power. Powerplants. Central stations ,TK1001-1841 - Abstract
Foam-based soft actuators are lightweight and highly compressible, which make them an attractive option for soft robotics. A negative pressure drive would complement the advantages of foam actuators and improve the durability of the soft robotic system. In this study, a foam actuator was designed with a negative pressure pneumatic drive comprising bellows air chambers, a polyurethane foam body, and sealing layers at the head and tail. Experiments were performed to test the bending and contraction performances of the actuator with the foaming multiplier and air chamber length as variables. At air pressures of 0–90 kPa, the bending angle and contraction of the actuator increased with the foaming multiplier and number of air chamber sections. The designed actuator achieved a bending angle of 56.2° and contraction distance of 34 mm (47.9% of the total length) at 90 kPa, and the bending and contraction output forces were 3.5 and 7.2 N, respectively. A control system was built, and four soft robots were constructed with different numbers of actuators. In experiments, the robots successfully completed operations such as lifting, gripping, walking, and gesturing. The designed actuator is potentially applicable to debris capture, field rescue, and teaching in classrooms.
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- 2022
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78. Structural and functional regulation of Chlamydomonas lysosome-related organelles during environmental changes
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Huan Long, Jinhua Fang, Lian Ye, Baolong Zhang, Colleen Hui, Xuan Deng, Sabeeha S Merchant, and Kaiyao Huang
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Physiology ,Genetics ,Plant Science - Abstract
Lysosome-related organelles (LROs) are a class of heterogeneous organelles conserved in eukaryotes that primarily play a role in storage and secretion. An important function of LROs is to mediate metal homeostasis. Chlamydomonas reinhardtii is a model organism for studying metal ion metabolism; however, structural and functional analyses of LROs in C. reinhardtii are insufficient. Here, we optimized a method for purifying these organelles from 2 populations of cells: stationary phase or overloaded with iron. The morphology, elemental content, and lysosomal activities differed between the 2 preparations, even though both have phosphorus and metal ion storage functions. LROs in stationary phase cells had multiple non-membrane-bound polyphosphate granules to store phosphorus. Those in iron-overloaded cells were similar to acidocalcisomes (ACs), which have a boundary membrane and contain 1 or 2 large polyphosphate granules to store more phosphorus. We established a method for quantifying the capacity of LROs to sequester individual trace metals. Based on a comparative proteomic analysis of these 2 types of LROs, we present a comprehensive AC proteome and identified 113 putative AC proteins. The methods and protein inventories provide a framework for studying the biogenesis and modification of LROs and the mechanisms by which they participate in regulating metal ion metabolism.
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- 2023
79. Advances in the Application of Natural Products and the Novel Drug Delivery Systems for Psoriasis
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Jin Xie, Shengjie Huang, Haozhou Huang, Xuan Deng, Pengfei Yue, Junzhi Lin, Ming Yang, Li Han, and Ding-kun Zhang
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psoriasis ,pathogenesis ,natural products ,novel drug delivery systems ,target ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Psoriasis, an incurable autoimmune skin disease, is one of the most common immune-mediated disorders. Presently, numerous clinical research studies are underway, and treatment options are available. However, these treatments focus on improving symptoms of the disease and fail to achieve a radical cure; they also have certain toxic side effects. In recent years, natural products have increasingly gained attention because of their high efficiency and low toxicity. Despite their obvious therapeutic effects, natural products’ biological activity was limited by their instability, poor solubility, and low bioavailability. Novel drug delivery systems, including liposomes, lipospheres, nanostructured lipid carriers, niosomes, nanoemulsions, nanospheres, microneedles, ethosomes, nanocrystals, and foams could potentially overcome the limitations of poor water solubility and permeability in traditional drug delivery systems. Thus, to achieve a therapeutic effect, the drug can reach the epidermis and dermis in psoriatic lesions to interact with the immune cells and cytokines.
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- 2021
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80. Applying Auction Mechanisms to Designing a Chinese Reading Games for Keyword Selection and Summary Writing.
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Yuchao Ji, Hercy N. H. Cheng, Calvin C. Y. Liao, Wang-Chen Chang, and Xuan Deng
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- 2017
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81. Circulating tumor cell characterization of lung cancer brain metastases in the cerebrospinal fluid through single‐cell transcriptome analysis
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Haoyu Ruan, Yihang Zhou, Jie Shen, Yue Zhai, Ying Xu, Linyu Pi, Ruofan Huang, Kun Chen, Xiangyu Li, Weizhe Ma, Zhiyuan Wu, Xuan Deng, Xu Wang, Chao Zhang, and Ming Guan
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cerebrospinal fluid ,circulating tumor cell ,leptomeningeal metastases ,lung adenocarcinoma ,single‐cell RNA sequencing ,Medicine (General) ,R5-920 - Abstract
Abstract Background Brain metastases explain the majority of mortality associated with lung cancer, which is the leading cause of cancer death. Cytology analysis of the cerebrospinal fluid (CSF) remains the diagnostic gold standard, however, the circulating tumor cells (CTCs) in CSF (CSF‐CTCs) are not well defined at the molecular and transcriptome levels. Methods We established an effective CSF‐CTCs collection procedure and isolated individual CSF cells from five lung adenocarcinoma leptomeningeal metastases (LUAD‐LM) patients and three controls. Three thousand seven hundred ninety‐two single‐cell transcriptomes were sequenced, and single‐cell RNA sequencing (scRNA‐seq) gene expression analysis was used to perform a comprehensive characterization of CSF cells. Results Through clustering and expression analysis, we defined CSF‐CTCs at the transcriptome level based on epithelial markers, proliferation markers, and genes with lung origin. The metastatic‐CTC signature genes are enriched for metabolic pathway and cell adhesion molecule categories, which are crucial for the survival and metastases of tumor cells. We discovered substantial heterogeneity in patient CSF‐CTCs. We quantified the degree of heterogeneity and found significantly greater among‐patient heterogeneity compared to among‐cell heterogeneity within a patient. This observation could be explained by spatial heterogeneity of metastatic sites, cell‐cycle gene, and cancer‐testis antigen (CTA) expression profiles as well as the proportion of CTCs displaying mesenchymal and cancer stem cell properties. In addition, our CSF‐CTCs transcriptome profiling allowed us to determine the biomarkers during the progression of an LM patient with cancer of unknown primary site (CUP). Conclusions Our results will provide candidate genes for an RNA‐based digital detection of CSF‐CTCs from LUAD‐LM and CUP‐LM cases, and shed light on the therapy and mechanism of LUAD‐LM.
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- 2020
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82. A Novel Method for Fast Kernel Minimum Noise Fraction Transformation in Hyperspectral Image Dimensionality Reduction
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Tianru Xue, Yueming Wang, and Xuan Deng
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dimensionality reduction ,kernel minimum noise fraction (KMNF) transformation ,Nyström method ,graphics processing unit (GPU) ,Science - Abstract
Feature extraction, aiming to simplify and optimize data features, is a typical hyperspectral image dimensionality reduction technique. As a kernel-based method, kernel minimum noise fraction (KMNF) transformation is excellent at handling the nonlinear features within HSIs. It adopts the kernel function to ensure data linear separability by transforming the original data to a higher feature space, following which a linear analysis can be performed in this space. However, KMNF transformation has the problem of high computational complexity and low execution efficiency. It is not suitable for the processing of large-scale datasets. In terms of this problem, this paper proposes a graphics processing unit (GPU) and Nyström method-based algorithm for Fast KMNF transformation (GNKMNF). First, the Nyström method estimates the eigenvector of the entire kernel matrix in KMNF transformation by the decomposition and extrapolation of the sub-kernel matrix to reduce the computational complexity. Then, the sample size in the Nyström method is determined utilizing a proportional gradient selection strategy. Finally, GPU parallel computing is employed to further improve the execution efficiency. Experimental results show that compared with KMNF transformation, improvements of up to 1.94% and 2.04% are achieved by GNKMNF in overall classification accuracy and Kappa, respectively. Moreover, with a data size of 64 × 64 × 250, the execution efficiency of GNKMNF speeds up by about 80×. The outcome demonstrates the significant performance of GNKMNF in feature extraction and execution efficiency.
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- 2022
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83. Characterization of Two-Phase Flow from Pore-Scale Imaging Using Fractal Geometry under Water-Wet and Mixed-Wet Conditions
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Shuangmei Zou, Peixing Xu, Congjiao Xie, Xuan Deng, and Haodong Tang
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wettability ,pore scale imaging ,two phase flow ,fractal geometric parameters ,fluid distribution ,Technology - Abstract
High resolution micro-computed tomography images for multiphase flow provide us an effective tool to understand the mechanism of fluid flow in porous media, which is not only fundamental to the understanding of macroscopic measurements but also for providing benchmark datasets to validate pore-scale modeling. In this study, we start from two datasets of pore scale imaging of two-phase flow obtained experimentally under in situ imaging conditions at different water fractional flows under water-wet and mixed-wet conditions. Then, fractal dimension, lacunarity and succolarity are used to quantify the complexity, clustering and flow capacity of water and oil phases. The results show that with the wettability of rock surface altered from water-wet to mixed-wet, the fractal dimension for the water phase increases while for the oil phase, it decreases obviously at low water saturation. Lacunarity largely depends on the degree of wettability alteration. The more uniform wetting surfaces are distributed, the more homogeneous the fluid configuration is, which indicates smaller values for lacunarity. Moreover, succolarity is shown to well characterize the wettability effect on flow capacity. The succolarity of the oil phase in the water-wet case is larger than that in the mixed-wet case while for the water phase, the succolarity value in the water-wet is small compared with that in the mixed-wet, which show a similar trend with relative permeability curves for water-wet and mixed-wet. Our study provides a perspective into the influence that phase geometry has on relative permeability under controlled wettability and the resulting phase fractal changes under different saturations that occur during multiphase flow, which allows a means to understand phase geometric changes that occur during fluid flow.
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- 2022
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84. Massive increases in C31 alkane on Zygophyllum xanthoxylum leaves contribute to its excellent abiotic stress tolerance
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Hu-Jun Li, Wan-Peng Bai, Lin-Bo Liu, Hai-Shuang Liu, Li Wei, Timothy M Garant, Rebecca S Kalinger, Yu-Xuan Deng, Gai-Ni Wang, Ai-Ke Bao, Qing Ma, Owen Rowland, and Suo-Min Wang
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Plant Science - Abstract
Background and Aims Desert plants possess excellent water-conservation capacities to survive in extreme environments. Cuticular wax plays a pivotal role in reducing water loss through plant aerial surfaces. However, the role of cuticular wax in water retention by desert plants is poorly understood. Methods We investigated leaf epidermal morphology and wax composition of five desert shrubs from north-west China and characterized the wax morphology and composition for the typical xerophyte Zygophyllum xanthoxylum under salt, drought and heat treatments. Moreover, we examined leaf water loss and chlorophyll leaching of Z. xanthoxylum and analysed their relationships with wax composition under the above treatments. Key Results The leaf epidermis of Z. xanthoxylum was densely covered by cuticular wax, whereas the other four desert shrubs had trichomes or cuticular folds in addition to cuticular wax. The total amount of cuticular wax on leaves of Z. xanthoxylum and Ammopiptanthus mongolicus was significantly higher than that of the other three shrubs. Strikingly, C31 alkane, the most abundant component, composed >71 % of total alkanes in Z. xanthoxylum, which was higher than for the other four shrubs studied here. Salt, drought and heat treatments resulted in significant increases in the amount of cuticular wax. Of these treatments, the combined drought plus 45 °C treatment led to the largest increase (107 %) in the total amount of cuticular wax, attributable primarily to an increase of 122 % in C31 alkane. Moreover, the proportion of C31 alkane within total alkanes remained >75 % in all the above treatments. Notably, the water loss and chlorophyll leaching were reduced, which was negatively correlated with C31 alkane content. Conclusion Zygophyllum xanthoxylum could serve as a model desert plant for study of the function of cuticular wax in water retention because of its relatively uncomplicated leaf surface and because it accumulates C31 alkane massively to reduce cuticular permeability and resist abiotic stressors.
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- 2023
85. Overexpression of the sulfate transporter‐encoding SULTR2 increases chromium accumulation in Chlamydomonas reinhardtii
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Yuxin Tang, Baolong Zhang, Zhaoyang Li, Ping Deng, Xuan Deng, Huan Long, Xun Wang, and Kaiyao Huang
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Bioengineering ,Applied Microbiology and Biotechnology ,Biotechnology - Published
- 2023
86. lncRNA MEG3 Promotes PDK4/GSK-3β/β-Catenin Axis in MEFs by Targeting miR-532-5p
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Yuan-Yuan Yang, Yi-Xuan Deng, Xin-Tong Yao, Hong-Hong Luo, Wen-Ge He, Xuan-Ling Cao, Rong-Chun Chen, Bai-Cheng He, Hai-Tao Jiang, and Jing Wang
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Aging ,Article Subject ,Cell Biology ,General Medicine ,Biochemistry - Abstract
Studies reported the positive and negative osteogenic effects of MEG3 in mesenchymal stem cells (MSCs). This study aims at clarifying the osteogenic potential of MEG3 and the underlying mechanism. Bone morphogenetic protein 9- (BMP9-) transfected MSCs were recruited as an osteogenic model in vitro, and ectopic bone formation were used in vivo to explore the effect of MEG3 on osteogenesis. We found that overexpression of MEG3 facilitated BMP9-induced osteogenic markers, ALP activities, and matrix mineralization. However, knockdown of MEG3 attenuated BMP9-induced osteogenic markers. MEG3 increased the phosphorylation of GSK-3β and the protein level of β-catenin. Pyruvate dehydrogenase kinase 4 (PDK4) can also combine with GSK-3β and increase the latter phosphorylation. Moreover, MEG3 increased the mRNA level of PDK4. The ceRNA analysis showed that MEG3 may regulate the expression of PDK4 via microRNA 532-5p (miR-532-5p). The MEG3-enhanced GSK-3β/β-catenin axis can be attenuated by miR-532-5p, and miR-532-5p inhibitor partly rescued endogenous PDK4 and MEG3-mediated expression of PDK4. MEG3 may potentiate PDK4 and GSK-3β/β-catenin by inhibiting miR-532-5p.
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- 2023
87. Effect of Sn on elastic modulus and magnetic susceptibility of Zr-16Nb-xTi (x=4 wt%, 6 wt%) alloys
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Ren-hao Xue, Dong Wang, Yue-yan Tian, Zi-xuan Deng, Li-bin Liu, and Li-gang Zhang
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Metals and Alloys ,General Engineering - Published
- 2023
88. The inhibition of Aurora A kinase regulates phospholipid remodeling by upregulating LPCAT1 in glioblastoma
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Ya-Zhou MIAO, Jing WANG, Shu-Yu HAO, Yu-Xuan DENG, Zhe ZHANG, Ze-Ping JIN, Da-Yuan LIU, Shao-Dong ZHANG, Hong WAN, Nan JI, and Jie FENG
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Cancer Research ,Oncology - Published
- 2023
89. A PRODUCTION SPLITTING MODEL OF HETEROGENEOUS MULTI-LAYERED RESERVOIRS WITH COMMINGLED PRODUCTION
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Guoqing Xue, Xiaoliang Huang, Xuan Deng, Zhilin Qi, Nianxiao Liu, and Sainan Li
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Mechanics of Materials ,Mechanical Engineering ,Modeling and Simulation ,Biomedical Engineering ,General Materials Science ,Condensed Matter Physics - Abstract
Production splitting is the basis for a proper understanding of the development effect of reservoirs when multiple layers are commingled to produce, and it is a difficult part of the development evaluation of this type of reservoir. Reservoirs with multiple layers are usually developed through commingled production. However, due to interlayer interference, the total output of commingled production is lower than the sum of individual production of each subordinate layer. It's significant to clarify the interlayer interference mechanism during layers with commingled production, establish an accurate splitting model of the production from subordinate layers, split the commingled production into each subordinate layer, and effectively understand the production level and remaining potential of the subordinate layers during commingled production. It is expected to develop a theoretical basis for the rational and effective development of multi-layered commingled production reservoirs. In this paper, a combination of multi-tube parallel displacement experiments and numerical simulations of a multi-layered reservoir with commingled production is used to analyze the influence of factors such as permeability ratio, production pressure difference, and crude oil viscosity on the interlayer interference mechanism. According to the research results, the interference coefficient is firstly introduced on the basis of the theoretical production formula of seepage flow. The change rate of the oil production splitting coefficient at the stage when the water cut is more than 80% is also proposed, and the production splitting model of subordinate layers in heterogeneous reservoirs is established, considering multiple factors. Taking multi-layered Reservoir A with commingled production as an example, this model is used to split the production of commingled wells. Results show that interlayer interference can be reduced by decreasing the permeability ratio and high permeability laminar fluidity, and increasing the production pressure difference. When the water content is greater than 80%, the oil production segmentation coefficient of the layers with high permeability decreases sharply with the increase of the water content. For the low-permeable layer, the situation is just the opposite. At the same time, based on the study of the interlayer interference mechanism coupled with the oil well radial flow production formula, the interference coefficient and the oil production segmentation coefficient change ratio are introduced. The findings of this study can help develop a more accurate model for production of subordinate layers in heterogeneous multi-layered reservoirs. The established splitting model is carried out using the data from two wells and four subordinate layers in Reservoir A, indicating that the accuracy of the proposed model is close to 90%.
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- 2023
90. From natural dye to herbal medicine: a systematic review of chemical constituents, pharmacological effects and clinical applications of indigo naturalis
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Qi-yue, Yang, Ting, Zhang, Ya-nan, He, Sheng-jie, Huang, Xuan, Deng, Li, Han, and Chun-guang, Xie
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- 2020
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91. Serological and molecular epidemiology of Japanese Encephalitis in Zhejiang, China, 2015-2018.
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Xuan Deng, Ju-Ying Yan, Han-Qing He, Rui Yan, Yi Sun, Xue-Wen Tang, Yang Zhou, Jun-Hang Pan, Hai-Yan Mao, Yan-Jun Zhang, and Hua-Kun Lv
- Subjects
Arctic medicine. Tropical medicine ,RC955-962 ,Public aspects of medicine ,RA1-1270 - Abstract
BackgroundShifts have occurred in the epidemiological characteristics of Japanese encephalitis (JE), extending from the molecular level to the population level. The aim of this study was to investigate the seroprevalence of JE neutralizing antibodies in healthy populations from different age groups in Zhejiang Province, and to conduct mosquito monitoring to evaluate the infection rate of Japanese encephalitis virus (JEV) among vectors, as well as the molecular characteristics of the E gene of isolated JEV strains.Methodology/principal findingsA total of 1190 sera samples were screened by a microseroneutralization test, including 429 infants (28d-11m) and 761 participants (2y-82y). For those under 1 year old, the geometric mean titers (GMTs) of the JE neutralizing antibody was 9.49 at birth and significantly declined as the age of month increased (r = -0.225, PConclusions/significanceZhejiang Province was at a high risk of JE exposure due to relatively lower neutralizing antibody levels among the younger-aged population and higher infection rates of JEV in mosquitoes. Continuous, timely and full coverage of JE vaccination are essential, as well as the separation of human living areas and livestock shed areas. In addition, annual mosquito surveillance and periodic antibody level monitoring are important for providing evidence for improvement in JE vaccines and immunization schedules.
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- 2020
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92. Effects of skin care habits on the development of rosacea: A multi-center retrospective case-control survey in Chinese population.
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Ying-Xue Huang, Ji Li, Zhi-Xiang Zhao, Bo-Lan Zheng, Yu-Xuan Deng, Wei Shi, Martin Steinhoff, and Hong-Fu Xie
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Medicine ,Science - Abstract
BackgroundCertain cosmetic habits may trigger or aggravate rosacea, while there is little published epidemiologic evidence to support this point.PurposeTo examine if daily skin care habits have an effect on the development of rosacea in Chinese population.MethodsA multi-center retrospective case-control survey of 1,245 rosacea cases and 1,538 skin-healthy controls was conducted in China. Participants completed the questionnaire comprised of demographic characteristics, socioeconomic data and daily skin care habits. Data were collected retrospectively and analyzed using the chi-square test and t-test. Multivariate logistic regression analyses were used to predict rosacea.ResultsThe multivariate logistic regression analysis highlighted some results: Dry, oily or mixed skin (OR = 6.3-6.9, P< .001), the usage of foaming cleanser (OR = 1.45, 95%CI 1.115-1.886, P = .01), make up more than 6 times a week (OR = 2.839, 95%CI 1.962-4.108, P< .001), using facial mask more than 4 times a week (OR = 2.56-3.069, P< .001), facial treatments at beauty salon more than once a week (OR = 4.946, 95%CI 2.005-12.198, P = .0018) and using beauty salon products (OR = 2.334, 95%CI 1.435-3.976, P = .0018) are positively correlated with the development of rosacea. Using of moisturizing products (OR = 0.602, 95%CI 0.386-0.983, P = .035) and sunscreen cream (OR = 0.303-0.507, P< .001 or P = .0167 for different frequency) presented significantly negative correlations with rosacea. Frequency of cleansing showed a nonlinear association with rosacea: using facial cleansers 1~3 times per week (OR = 0.647, 95%CI 0.429-0.975, P = .038) showed beneficial effects while using facial cleanser excessively (twice or more daily) (OR = 2.131, 95%CI 1.394-3.256, P< .001) positively correlated to rosacea strongly.ConclusionsExcessive use of facial cleanser (twice or more a day) and facial mask (more than 4 times a week), frequent makeup (more than 6 times a week), regular skin care in beauty salon (more than once a week), and using beauty salon products were closely correlated to the development of rosacea in Chinese population.
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- 2020
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93. Research on a Measurement Method for Middle-Infrared Radiation Characteristics of Aircraft
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Xuan Deng, Yueming Wang, Guicheng Han, and Tianru Xue
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atmospheric transport model ,uncertainty analysis ,middle infrared ,quasi-Newton method ,temperature inversion ,Mechanical engineering and machinery ,TJ1-1570 - Abstract
Aiming at the problem wherein temperature inversion accuracy is unstable due to the major differences in atmospheric transmittance under various observation paths, a method for measuring radiation characteristics of an aircraft engine’s hot parts and skin using a cooled middle-wave infrared camera is proposed. Based on the analysis of the aircraft’s infrared radiation characteristics, the atmospheric transmission model of any observation path was revised, the absolute radiation correction model was established, and the temperature inversion equation was calculated. Then, we used the quasi-Newton method to calculate the skin temperature and discussed uncertainty sources. After the theoretical study, an outfield test was carried out. A middle-wave infrared camera with a wavelength of 3.7–4.8 μm was applied to the actual experimental observation of the turbofan civil aviation aircraft. The ground observation distance was 15 km, and the flying height was 3 km. When implementing temperature inversion with the method presented in this paper, the surface temperature of the aircraft engine hot parts was 381 K, the correction uncertainty was ±10 K, the surface temperature of the skin was 296 K, and the correction uncertainty was ±6 K. As the experiment showed, the method in this paper can effectively implement infrared target temperature inversion and provide a reference for the quantification of infrared data.
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- 2022
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94. Genome-wide association study for multiple phenotype analysis
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Xuan Deng, Biqi Wang, Virginia Fisher, Gina Peloso, Adrienne Cupples, and Ching-Ti Liu
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Medicine ,Science - Abstract
Abstract Genome-wide association studies often collect multiple phenotypes for complex diseases. Multivariate joint analyses have higher power to detect genetic variants compared with the marginal analysis of each phenotype and are also able to identify loci with pleiotropic effects. We extend the unified score-based association test to incorporate family structure, apply different approaches to analyze multiple traits in GAW20 real samples, and compare the results. Through simulation studies, we confirm that the Type I error rate of the pedigree-based unified score association test is appropriately controlled. In marginalanalysis of triglyceride levels, we found 1 subgenome-wide significant variant on chromosome 6. Joint analyses identified several suggestive genome-wide significant signals, with the pedigree-based unified score association test yielding the greatest number of significant results.
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- 2018
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95. Do changes in DNA methylation mediate or interact with SNP variation? A pharmacoepigenetic analysis
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Virginia A. Fisher, Lan Wang, Xuan Deng, Chloé Sarnowski, L. Adrienne Cupples, and Ching-Ti Liu
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Causal modeling ,Genomic data integration ,Gene-methylation interaction ,Indirect effects ,Triglycerides ,Genofibrate treatment ,Genetics ,QH426-470 - Abstract
Abstract Background In studies with multi-omics data available, there is an opportunity to investigate interdependent mechanisms of biological causality. The GAW20 data set includes both DNA genotype and methylation measures before and after fenofibrate treatment. Using change in triglyceride (TG) levels pre- to posttreatment as outcome, we present a mediation analysis that incorporates methylation. This approach allows us to simultaneously consider a mediation hypothesis that genotype affects change in TG level by means of its effect on methylation, and an interaction hypothesis that the effect of change in methylation on change in TG levels differs by genotype. We select 322 single-nucleotide polymorphism–cytosine-phosphate-guanine (SNP-CpG) site pairs for mediation analysis on the basis of proximity and marginal genome-wide association study (GWAS) and epigenome-wide association study (EWAS) significance, and present results from the real-data sample of 407 individuals with complete genotype, methylation, TG levels, and covariate data. Results We identified 3 SNP-CpG site pairs with significant interaction effects at a Bonferroni-corrected significance threshold of 1.55E-4. None of the analyzed sites showed significant evidence of mediation. Power analysis by simulation showed that a sample size of at least 19,500 is needed to detect nominally significant indirect effects with true effect sizes equal to the point estimates at the locus with strongest evidence of mediation. Conclusions These results suggest that there is stronger evidence for interaction between genotype and methylation on change in triglycerides than for methylation mediating the effect of genotype.
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- 2018
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96. Scalability and Stability Enhancement in Self-Aligned Top-Gate Indium- Zinc-Oxide TFTs With Al Reacted Source/Drain
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Ting Liang, Yang Shao, Huiling Lu, Xiaoliang Zhou, Xuan Deng, and Shengdong Zhang
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Amorphous indium-zinc-oxide (a-IZO) ,self-aligned ,top-gate ,aluminum reaction ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
A self-aligned fabrication process for top-gate amorphous indium-zinc-oxide (a-IZO) thin-film transistors (TFTs) is demonstrated. Aluminum (Al) thermal treatment is employed to dope the a-IZO layer and thus form the self-aligned source/drain regions. The results show that the sheet resistance of the Al-treated a-IZO layer can be as low as 360 Ω/□. The fabricated top-gate TFTs typically have a mobility of 16.84 cm2/V · s, subthreshold swing of 0.14 V/dec and on/off current ratio of > 109. The Al-treated TFTs show a significant scalability and stability enhancement compared to the conventional Ar plasma-treated ones. This enhancement can be attributed to the thin Al2O3 layer formed on source-drain area that blocks the diffusion of hydrogen or H2O from the passivation layer into the source-drain and channel regions.
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- 2018
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97. Flow-Guided Temporal-Spatial Network for HEVC Compressed Video Quality Enhancement.
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Xiandong Meng, Xuan Deng, Shuyuan Zhu, Shuaicheng Liu, and Bing Zeng
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- 2020
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98. The decline in immunity and circulation of pertussis among Chinese population during the COVID-19 pandemic: A cross-sectional sero-epidemiological study
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Hanqing, He, Yao, Zhu, Mingjuan, Jin, Yang, Zhou, Xuewen, Tang, Rui, Yan, Xuan, Deng, and Kun, Chen
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Adult ,Pertussis Vaccine ,China ,Adolescent ,General Veterinary ,General Immunology and Microbiology ,Whooping Cough ,Public Health, Environmental and Occupational Health ,Infant ,COVID-19 ,Middle Aged ,Antibodies, Bacterial ,Young Adult ,Cross-Sectional Studies ,Infectious Diseases ,Pertussis Toxin ,Seroepidemiologic Studies ,Child, Preschool ,Immunoglobulin G ,Humans ,Molecular Medicine ,Child ,Pandemics - Abstract
In recent years, the resurgence of pertussis has posed a public health challenge in many countries. This study aimed to evaluate the immunity levels against pertussis among populations of different ages in China.We conducted a cross-sectional serological survey in Zhejiang Province, China in 2020. Serum IgG antibodies against pertussis toxin (anti-PT), filamentous hemagglutinin (anti-FHA), and pertactin (anti-PRN) were quantitatively measured. The geometric mean concentration (GMC) of three antibodies was calculated. An anti-PT level 5 IU/mL was considered undetectable, ≥20 IU/mL as seropositive and ≥80 IU/mL as an indicator of recent infection. Mathematical models were fitted for anti-PT concentrations over time in children after four doses of the pertussis vaccination.A total of 4459 participants aged 0-59 years were included in the analyses. The overall positivity rate of anti-PT was 29.80% with the highest (81.44%) rate in the 1-2 years old and the lowest (4.72%) in 10-14 years old. The GMCs of anti-PT, anti-FHA and anti-PRN for the whole participants were 9.67 (95%CI: 9.25-10.10),18.93 (18.24-19.67), and 8.99 (8.61-9.38) IU/mL, respectively. Over 50% of subjects aged ≥ 7 years had undetectable anti-PT IgG antibodies (5IU/mL). The proportions of the populations with anti-PT IgG ≥ 80 IU/mL were approximately 0.9%, 0.3% and 1.1% among the 10-14, 15-29, and 40-59 years old groups, respectively. The power regression equation of the attenuation model after last dose of pertussis vaccine was y = 41.088xThe prevalence of pertussis decreased during the study period in the COVID-19 pandemic; however, there was still a certain proportion of adolescents and adults with evidence of recent infection. The decline in antibody levels after pertussis vaccination was observed, and booster doses are in urgent need in China.
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- 2022
99. Mixed Noise Estimation Model for Optimized Kernel Minimum Noise Fraction Transformation in Hyperspectral Image Dimensionality Reduction
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Tianru Xue, Yueming Wang, Yuwei Chen, Jianxin Jia, Maoxing Wen, Ran Guo, Tianxiao Wu, and Xuan Deng
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hyperspectral image (HSI) ,dimensionality reduction (DR) ,mixed noise estimation model (MNEM) ,optimized KMNF (OP-KMNF) ,graphics processing units (GPU) ,Science - Abstract
Dimensionality reduction (DR) is of great significance for simplifying and optimizing hyperspectral image (HSI) features. As a widely used DR method, kernel minimum noise fraction (KMNF) transformation preserves the high-order structures of the original data perfectly. However, the conventional KMNF noise estimation (KMNF-NE) uses the local regression residual of neighbourhood pixels, which depends heavily on spatial information. Due to the limited spatial resolution, there are many mixed pixels in HSI, making KMNF-NE unreliable for noise estimation and leading to poor performance in KMNF for classification on HSIs with low spatial resolution. In order to overcome this problem, a mixed noise estimation model (MNEM) is proposed in this paper for optimized KMNF (OP-KMNF). The MNEM adopts the sequential and linear combination of the Gaussian prior denoising model, median filter, and Sobel operator to estimate noise. It retains more details and edge features, making it more suitable for noise estimation in KMNF. Experiments using several HSI datasets with different spatial and spectral resolutions are conducted. The results show that, compared with some other DR methods, the improvement of OP-KMNF in average classification accuracy is up to 4%. To improve the efficiency, the OP-KMNF was implemented on graphics processing units (GPU) and sped up by about 60× compared to the central processing unit (CPU) implementation. The outcome demonstrates the significant performance of OP-KMNF in terms of classification ability and execution efficiency.
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- 2021
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100. STAT3-mediated upregulation of lncRNA HOXD-AS1 as a ceRNA facilitates liver cancer metastasis by regulating SOX4
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Hui Wang, Xisong Huo, Xin-Rong Yang, Jia He, Lijun Cheng, Na Wang, Xuan Deng, Haojie Jin, Ning Wang, Cun Wang, Fangyu Zhao, Jingyuan Fang, Ming Yao, Jia Fan, and Wenxin Qin
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HOXD-AS1 ,ceRNA ,SOX4 ,Metastasis ,Hepatocellular carcinoma ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background Several of the thousands of human long noncoding RNAs (lncRNAs) have been functionally characterized, yet their potential involvement in hepatocellular carcinoma (HCC) remains poorly understood. Methods LncRNA-HOXD-AS1 was identified by microarray and validated by real-time PCR. The clinicopathological significance of HOXD-AS1 was analyzed by Kaplan-Meier method. Chromatin immunoprecipitation was conducted to examine the mechanism of HOXD-AS1 upregulation. The role of HOXD-AS1 in HCC cells was assessed both in vitro and in vivo. ceRNA function of HOXD-AS1 was evaluated by RNA immunoprecipitation and biotin-coupled miRNA pull down assays. Results In this study, we found that HOXD-AS1 was significantly upregulated in HCC tissues. Clinical investigation demonstrated high expression level of HOXD-AS1 was associated with poor prognosis and high tumor node metastasis stage of HCC patients, and was an independent risk factor for survival. Moreover, our results revealed that STAT3 could specifically interact with the promoter of HOXD-AS1 and activate HOXD-AS1 transcription. Knockdown of HOXD-AS1 significantly inhibited migration and invasion of HCC cells in vitro and distant lung metastasis in vivo. Additionally, HOXD-AS1 was enriched in the cytoplasm, and shared miRNA response elements with SOX4. Overexpression of HOXD-AS1 competitively bound to miR-130a-3p that prevented SOX4 from miRNA-mediated degradation, thus activated the expression of EZH2 and MMP2 and facilitated HCC metastasis. Conclusions In summary, HOXD-AS1 is a prognostic marker for HCC patients and it may play a pro-metastatic role in hepatocarcinogenesis.
- Published
- 2017
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