162 results on '"Wenyi Chen"'
Search Results
2. Nonadjacent Wireless Electrotherapy for Tissue Repair by a 3D-Printed Bioresorbable Fully Soft Triboelectric Nanogenerator
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Bin Luo, Qiangqiang Zhou, Wenyi Chen, Lijie Sun, Lei Yang, Yifan Guo, Huijie Liu, Zekai Wu, Rasoul Esmaeely Neisiany, Xiaohong Qin, Jie Pan, and Zhengwei You
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Mechanical Engineering ,General Materials Science ,Bioengineering ,General Chemistry ,Condensed Matter Physics - Published
- 2023
3. Different modes of bubble migration near a vertical wall in pure water
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Runze Cai, Enbo Ju, Wenyi Chen, and Jiao Sun
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General Chemical Engineering ,General Chemistry - Published
- 2023
4. Examining Childhood Adversities in Chinese Health Science Students Using the Simplified Chinese Version of the Adverse Childhood Experiences-International Questionnaire (SC-ACE-IQ)
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Wenyi Chen, Zhiyuan Yu, Lin Wang, and Deborah Gross
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General Medicine - Abstract
Adverse childhood experiences (ACEs) are prevalent, costly, and associated with poor health outcomes in adults. Little is known about ACE prevalence rates or strategies for measuring ACEs among young adults in Mainland China. The aims of this study were to (a) translate the ACE-International Questionnaire (ACE-IQ) into Simplified Chinese, (b) assess the psychometric strength of the Simplified Chinese version of the ACE-IQ (SC-ACE-IQ), and (c) compare SC-ACE-IQ scores calculated using binary and frequency scoring methods. The ACE-IQ was translated from English to Simplified Chinese and evaluated for content validity, criterion validity, and test-retest reliability. Chinese young adults (
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- 2022
5. Diagnostic and Prognostic Roles of Thrombospondin-2 in Digestive System Cancers
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Feiqiong Gao, Wenyi Chen, Tingxiao Zhao, Jiong Yu, Xudong Feng, Lan Wang, Tianan Jiang, and Hongcui Cao
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General Immunology and Microbiology ,Humans ,General Medicine ,Digestive System Neoplasms ,Prognosis ,Thrombospondins ,Disease-Free Survival ,General Biochemistry, Genetics and Molecular Biology ,Gastrointestinal Neoplasms - Abstract
Background. Cancers of digestive system have high case-fatality rate. It is important to find more appropriate methods in diagnosing and predicting gastrointestinal malignances. And thrombospondin-2 (TSP-2) was reported to have the functions, although results were not identical. So we performed this meta-analysis to clarify the significance of TSP-2 in this area. Methods. PubMed, Embase, Web of Science, Cochrane Library, and Clinicaltrial.gov were searched for relevant studies. Data were extracted from these involved records. For the meta-analysis of diagnostic test, bivariate mixed effect model was used to estimate diagnostic accuracy. For prognosis part, HRs and their 95% CIs were pooled to compare the overall survival (OS) and disease-free survival (DFS) between patients with high TSP-2 and low TSP-2. Results. Nine records were eligible for the analysis of diagnostic test. Pooled results were as follows: sensitivity 0.60 (0.52, 0.68), specificity 0.96 (0.91, 0.98), positive likelihood ratio (PLR) 15.4 (7.3, 32.2), negative likelihood ratio (NLR) 0.42 (0.34, 0.50), and diagnostic odds ratio (DOR) 37 (18, 76). While in prognosis part, 10 articles were included. Patients with increased TSP-2 had shorter OS ( HR = 1.64 , 95% CI = 1.21 -2.22); however, no difference was found in DFS between TSP-2 high and low groups ( HR = 1.44 , 95% CI = 0.28 -7.33). Conclusions. TSP-2, as a diagnostic marker, has a high specificity but a moderate sensitivity. Meanwhile, it plays a role in predicting OS. Therefore, making TSP-2 a routine assay could be beneficial to high-risk individuals and patients with digestive malignances.
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- 2022
6. Tuning the Saturated Vapor Pressure of Solvothermal Synthesis to Boost the Thermoelectric Performance of Pristine Bi2Te3 Polycrystals by Anisotropy Strengthening
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Jing Yuan, Xiao-Lei Shi, De-Zhuang Wang, Wei-Di Liu, Meng Li, Wenyi Chen, Qishuo Yang, Yifeng Wang, Qingfeng Liu, and Zhi-Gang Chen
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Materials Chemistry ,Electrochemistry ,Energy Engineering and Power Technology ,Chemical Engineering (miscellaneous) ,Electrical and Electronic Engineering - Published
- 2023
7. Grain Refinement Mechanism of 5A06 Aluminum Alloy Sheets during Cold Rotary Forging
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Xinghui Han, Wenyi Chen, Xuan Hu, Lin Hua, and Fang Chai
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General Materials Science ,5A06 aluminum alloy ,cold rotary forging ,EBSD ,grain refinement mechanism - Abstract
This paper studies the grain refinement mechanisms of 5A06 aluminum alloy sheets in cold rotary forging (CRF). The results show that the grains are clearly refined from 25.1 µm to 11.8 µm during the CRF process. The grain refinement mechanism can be divided into two modes: (1) The grains with a small Schmid factor (SF) are activated by multi-slip systems, and dense dislocations are segregated along the boundaries of interior regions with different slip systems, which results in a rapidly increasing strain localization along these boundaries. Since the strain localization restrains the coordinate slip deformation between different interior regions, the grains are directly separated into several finer grains. (2) The grains with a large SF are primarily activated by a single slip system, and the dislocation migrates smoothly along most microband boundaries. Then, a more severe lattice rotation causes a transformation to a hard orientation and multi-slip system activation, which contributes to an increase in the rapid misorientation across microband boundaries and thus promotes significant SF grain refinement.
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- 2023
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8. Characteristic Analysis of Featured Genes Associated with Cholangiocarcinoma Progression
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Qigu Yao, Wenyi Chen, Feiqiong Gao, Yuchen Wu, Lingling Zhou, Haoying Xu, Jong Yu, Xinli Zhu, Lan Wang, Lanjuan Li, and Hongcui Cao
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Medicine (miscellaneous) ,General Biochemistry, Genetics and Molecular Biology ,cholangiocarcinoma ,hub gene ,tumorigenic mechanism ,prognostic biomarkers ,weighted gene co-expression network analysis - Abstract
The noninvasive diagnosis of cholangiocarcinoma (CCA) is insufficiently accurate. Therefore, the discovery of new prognostic markers is vital for the understanding of the CCA mechanism and related treatment. The information on CCA patients in The Cancer Genome Atlas database was used for weighted gene co-expression network analysis. Gene Ontology (GO) analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis were applied to analyze the modules of interest. By using receiver operating characteristic (ROC) analysis to analyze the Human Protein Atlas (HPA), the featured genes were subsequently verified. In addition, clinical samples and GSE119336 cohort data were also collected for the validation of these hub genes. Using WGCNA, we identified 61 hub genes that regulated the progression and prognosis of CCA. Eight hub genes (VSNL1, TH, PCP4, IGDCC3, RAD51AP2, MUC2, BUB1, and BUB1B) were identified which exhibited significant interactions with the tumorigenic mechanism and prognosis of CCA. In addition, GO and KEGG clarified that the blue and magenta modules were involved with chromosome segregation, mitotic and oocyte meiosis, the cell cycle, and sister chromatid segregation. Four hub genes (VSNL1, PCP4, BUB1, and BUB1B) were also verified as featured genes of progression and prognosis by the GSE119336 cohort data and five human tissue samples.
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- 2023
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9. A core-shell NiCu@NiCuOOH 3D electrode induced by surface electrochemical reconstruction for the ammonia oxidation reaction
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Huimin Zhang, Wenyi Chen, Hailong Wang, Xing Tong, Yifei Wang, Xu Yang, Zucheng Wu, and Zhanmeng Liu
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Fuel Technology ,Renewable Energy, Sustainability and the Environment ,Energy Engineering and Power Technology ,Condensed Matter Physics - Published
- 2022
10. TiO2 NTAs decorated with thin CuBi2O4 nanosheets for efficient photocatalytic dye degradation and hydrogen generation
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Shuxu Zhu, Wenyi Chen, Yao Liu, Yihan Zhang, Xiaoyu Wang, Yuming Cui, and Qingyao Wang
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Photocurrent ,Materials science ,Process Chemistry and Technology ,Metal ions in aqueous solution ,New energy ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Chemical engineering ,Reagent ,Materials Chemistry ,Ceramics and Composites ,Photocatalysis ,Photocatalytic degradation ,Hydrogen production ,Nanosheet - Abstract
Photocatalytic technology is the recent investigation focus because of the wide applications in sewage disposal and new energy generation. In this paper, the optical and photocatalytic properties of TiO2 NTAs were enhanced by the hydrothermal deposition of CuBi2O4 by regulating the precursor concentration. The results indicated that the precursor concentration played remarkable influences on the morphology and photocatalytic ability. The mild reagent concentration was in favor of super-thin CuBi2O4 nanosheet formation. CuBi2O4/TiO2 NTAs with high reagent concentration exhibited high photocurrent and hydrogen production, and showed outstanding performance in the removal of organic dyes and heavy metal ions. The free radical production and the photocatalytic progress were introduced in detail. The high photocatalytic activity exhibits prospective foreground in industrial waste water treatment and novel energy resource development.
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- 2022
11. Comparative study on polysilazane and silicone resins as high-temperature-resistant coatings
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Chenwei Sun, Dan Wang, Caihong Xu, Wenyi Chen, and Zongbo Zhang
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Polymers and Plastics ,Organic Chemistry ,technology, industry, and agriculture ,Materials Chemistry - Abstract
The development of high-temperature-resistant coatings is crucial, which demands a new adhesive resin owing to harsh service conditions. In this work, the structural evolution and basic performance of three different polysilazanes with a Si–N backbone are studied, which is further compared to a typical silicone resin with a Si–O backbone. Experimental results show that polysilazanes with different structures undergo a two-step oxidation process with a residual weight higher than 77% in comparison to the one-step degradation of silicone with a weight loss higher than 47% at 800°C under flowing air atmosphere. Additionally, the decrease in thickness of polysilazane-resin coating is below 50%, while that of the silicone-resin coating is higher than 77%, which affords a crack- and defect-free morphology in polysilazanes and blistering and particle aggregation in the silicone after a temperature treatment at 800°C. Thus, our study demonstrates that polysilazanes are potential alternative choices as resin adhesives for high-temperature-resistant coatings rather than silicone-based resins, in extremely harsh conditions.
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- 2022
12. Dynamic behavior of an ellipsoidal bubble contaminated by surfactant near a vertical wall
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Enbo Ju, Runze Cai, Haopeng Sun, Ying Fan, Wenyi Chen, and Jiao Sun
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General Chemical Engineering ,General Chemistry - Published
- 2022
13. KText: Arbitrary shape text detection using modified K‐Means
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Hui Yang, Xiaofei Sun, Wangqian Sun, Zhuo Qi, and Wenyi Chen
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Relation (database) ,Computer science ,business.industry ,Heuristic ,Computer applications to medicine. Medical informatics ,k-means clustering ,R858-859.7 ,Boundary (topology) ,Pattern recognition ,Context (language use) ,QA76.75-76.765 ,Feature (computer vision) ,Anomaly detection ,Computer Vision and Pattern Recognition ,Artificial intelligence ,Computer software ,Cluster analysis ,business ,Software - Abstract
Text detection methods based on grouping characters have emerged and have achieved promising performance. Nevertheless, previous methods that grouped characters by learning the relation of adjacent characters or used the heuristic clustering method with a handcrafted feature are unsuitable for dense, curved, or long texts. An effective manner of grouping characters is proposed by introducing K‐Means that is modified by the law of universal gravitation, an outlier detection mechanism and sufficient context information. Based on that, corresponding text detector is presented, named the Text Detector, based on modified K‐Means (KText), which can generate the bounding boundary of word‐level texts with an arbitrary shape. In the experimental stage, two novel stratagems are presented to replenish character‐level annotations to several datasets that provide only word‐level annotations. To evaluate the effectiveness of the method, experiments are carried out on three benchmarks, ICDAR2013, ICDAR2015 and Total‐Text, which contain horizontal, oriented and curved text. The results show that KText performs more competently than most state‐of‐the‐art text detectors when handling dense texts with an arbitrary shape.
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- 2022
14. Immobilization of Lecitase® Ultra onto the Organic Modified SBA-15 for Soybean Oil Degumming
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Wenyi Chen, Maomao Kou, Lin Li, Bing Li, Jianrong Huang, Shudong Fan, Li Xu, and Nanjing Zhong
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General Chemical Engineering ,General Medicine ,General Chemistry - Published
- 2022
15. A Petal-like Structured NiCuOOH-NF Electrode by a Sonochemical Combined with the Electrochemical Method for Ammonia Oxidation Reaction
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Hailong Wang, Luanqi Zhou, Wenyi Chen, Xing Tong, Yifei Wang, and Huimin Zhang
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Process Chemistry and Technology ,Chemical Engineering (miscellaneous) ,Bioengineering ,ammonia oxidation reaction ,NiCuOOH-NF electrode ,petal-like cluster structures ,sonochemical method ,surface reconstruction - Abstract
Direct electrochemical oxidation, as an economical and efficient method, has recently received increasing attention for ammonia-nitrogen wastewater treatment. Developing a low-cost, efficient catalytic electrode is the key to solve the problem of sluggish ammonia oxidation reaction (AOR) kinetics. In this study, a three-dimensional (3D) Ni foam electrode coated with NiCuOOH petal-like cluster structures was prepared using a simple sonochemical method combined with a surface electrochemical reconstruction strategy. This structure has a large surface area and abundant NiCuOOH active sites, giving a good premise for extraordinary electrocatalytic activity of AOR. The results show that the maximum current density for AOR reaches 97.8 mA cm−2 at 0.60 V vs. saturated calomel electrode (SCE). Additionally, 96.53% of NH4+-N removal efficiency and 63.12% of TN removal efficiency were acquired in the electrolysis system based on the NiCuOOH-NF electrode, as well as a good stability for at least 24 h. It is a promising flow-through anode for the clean treatment of ammonia-nitrogen wastewater.
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- 2023
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16. Dyslipidemia and Non-Alcoholic Fatty Liver Disease Due to a Somatic Mutation in HIF2A
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Feiqiong Gao, Qigu Yao, Jiaqi Zhu, Wenyi Chen, Xudong Feng, Bing Feng, Jian Wu, Jiong Yu, Zhengping Zhuang, Hongcui Cao, and Lanjuan Li
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- 2023
17. Development of Near-Bit High Precision Imaging Measuring Tool While Drilling
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Hengtian Jia, Weiping Ai, Weimin Mao, Liexin Peng, Limin Sheng, Xiurong Dou, Dezhou Yu, and Wenyi Chen
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- 2023
18. On the global L∞→BMO mapping property for Fourier integral operators
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Wenyi Chen, Jie Yang, and Guangqing Wang
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Pure mathematics ,TheoryofComputation_MATHEMATICALLOGICANDFORMALLANGUAGES ,Property (philosophy) ,Applied Mathematics ,ComputingMethodologies_DOCUMENTANDTEXTPROCESSING ,ComputingMilieux_MISCELLANEOUS ,Analysis ,Fourier integral operator ,Mathematics ,Bounded operator - Abstract
Let [Formula: see text] be a Fourier integral operator defined with [Formula: see text] and [Formula: see text] satisfying the strong non-degenerate condition. It is shown that [Formula: see text] is a bounded operator from [Formula: see text] to [Formula: see text], if [Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text]
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- 2021
19. Childhood adversity and mental health among Chinese young adults: The protective role of resilience
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Wenyi Chen, Deborah Gross, Lin Wang, Zhiyuan Yu, and Nancy Perrin
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China ,business.industry ,Mental Disorders ,media_common.quotation_subject ,Psychological intervention ,Mental health ,Young Adult ,Cross-Sectional Studies ,Mental Health ,Adverse Childhood Experiences ,Post-hoc analysis ,medicine ,Humans ,Anxiety ,Psychological resilience ,Analysis of variance ,medicine.symptom ,Young adult ,business ,General Nursing ,Depression (differential diagnoses) ,Clinical psychology ,media_common - Abstract
Aim The aims of this study were to examine the prevalence of adverse childhood experiences (ACEs) among health science students in China; associations between the number of ACE exposures and severity of depressive and anxiety symptoms; and the extent to which resilience moderates the effect of ACEs on mental health outcomes. Design This descriptive, cross-sectional study was conducted May-August 2020. Methods Five hundred and sixty-six health science students (18-38 years) from China completed online surveys measuring ACEs using the Simplified Chinese version of the ACE-International Questionnaire, depressive and anxiety symptoms and resilience. Descriptive statistical analysis, ANOVA with Tukey HSD post hoc tests and multiple regression analysis were performed using SPSS 27. Results 88.5% of participants reported at least one ACE; 42.6% reported four or more ACEs. Higher number of ACEs was associated with more symptoms of depression and anxiety. Four or more ACEs were associated with significantly worse mental health outcomes than those with no ACEs and those with one to three ACEs. Greater resilience significantly attenuated the effects of ACEs on mental health symptoms. Conclusions ACEs are highly prevalent among Chinese health science students but their impact on mental health can be buffered by higher levels of resilience. Impact Screening for ACEs and strength-based, trauma-informed interventions on fostering resilience is needed to promote mental health among Chinese young adults.
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- 2021
20. Positive Childhood Experiences Associate with Adult Flourishing Amidst Adversity: A Cross Sectional Survey Study with a National Sample of Young Adults
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Zhiyuan Yu, Lin Wang, Wenyi Chen, Juan Zhang, and Amie F. Bettencourt
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Adult ,Young Adult ,Cross-Sectional Studies ,Adolescent ,Adverse Childhood Experiences ,adverse childhood experiences ,flourishing ,positive childhood experiences ,surveys ,well-being ,young adults ,Health, Toxicology and Mutagenesis ,Surveys and Questionnaires ,Public Health, Environmental and Occupational Health ,Prevalence ,Humans ,Research Personnel - Abstract
The purpose of this study was to examine the prevalence of PCEs among young adults in Mainland China and the extent to which the cumulative number of PCEs moderates the associations between ACEs and flourishing in adulthood. Between August and November 2020, we used convenience and snowball sampling to recruit 9468 young adults, ages 18–35, enrolled in undergraduate or graduate programs at universities in Mainland China to participate in a survey, which included measures on flourishing, exposure to ACEs and PCEs, and demographic characteristics. Approximately 92% of participants reported experiencing seven to nine PCEs, with harmonious family relationships (96.9%), feeling supported by friends (96.8%) and being treated fairly at school (96.3%) being the most common PCEs reported. Results of the multiple regression indicated that the cumulative number of PCEs statistically significantly moderated the relation between the cumulative number of ACEs and flourishing (interaction term b = −0.060 [−0.071, −0.049], p < 0.001, adjusted R2 = 0.183); as the number of ACEs increased up through eight ACEs, decreases in flourishing were smaller among those with higher numbers of PCEs. PCEs are common among young adults from Mainland China and serve a potential buffering effect against exposure to ACEs.
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- 2022
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21. Plastaumatic: Automating plastome assembly and annotation
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Wenyi, Chen, Sai Reddy, Achakkagari, and Martina, Strömvik
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Plant Science - Abstract
Plastome sequence data is most often extracted from plant whole genome sequencing data and need to be assembled and annotated separately from the nuclear genome sequence. In projects comprising multiple genomes, it is labour intense to individually process the plastomes as it requires many steps and software. This study developed Plastaumatic - an automated pipeline for both assembly and annotation of plastomes, with the scope of the researcher being able to load whole genome sequence data with minimal manual input, and therefore a faster runtime. The main structure of the current automated pipeline includes trimming of adaptor and low-quality sequences using fastp, de novo plastome assembly using NOVOPlasty, standardization and quality checking of the assembled genomes through a custom script utilizing BLAST+ and SAMtools, annotation of the assembled genomes using AnnoPlast, and finally generating the required files for NCBI GenBank submissions. The pipeline is demonstrated with 12 potato accessions and three soybean accessions.
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- 2022
22. Predictive significance of Charcot‐Leyden crystal structures for nasal polyp recurrence
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Wenyi Chen, Yurong Bai, Weifeng Kong, Xin Luo, Yinhui Zeng, Jingyuan Chen, Xinyue Wang, Qingwu Wu, Shuvam Chaudhuri, Jianning Chen, Qintai Yang, and Yana Zhang
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Pulmonary and Respiratory Medicine ,Immunology ,Immunology and Allergy - Abstract
Charcot-Leyden crystals (CLCs) are recognized to be classic hallmarks of eosinophilic inflammation. Both protein and mRNA levels of CLC in nasal secretions and nasal brushing samples have been associated with nasal polyp recurrence. However, whether the crystalline CLC structures in nasal tissue could serve as an effective biomarker to predict polyp recurrence remains unclear.A total of 110 patients with chronic rhinosinusitis with nasal polyps (CRSwNP) completing the postoperative follow-up over a period of 24 months were recruited. Hematoxylin and eosin staining was employed for CLCs identification. The predictive factors for polyp recurrence were determined by binary logistic regression analysis.Thirty three (30.00%) patients developed recurrence during a 24-month postoperative follow-up, in which 84.85% (28/33) patients had crystalline CLC structures. Logistic regression analysis showed that crystalline CLC structure in nasal tissues is predictive of polyp recurrence. Youden index demonstrated crystalline CLC structure higher than 1 per high power field can predict postoperative polyp recurrence with 84.80% sensitivity and 98.70% specificity.The crystalline CLC structures in nasal tissues may serve as an easy-counting and promising biomarker to predict CRSwNP recurrence.
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- 2022
23. Refugee-related trauma patterns and mental health symptoms across three generations of Hmong Americans
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Maichou Lor, Zhiyuan Yu, Wenyi Chen, Yee Xiong, James A. Yonker, Roger Brown, and Dean D. Krahn
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Adult ,Stress Disorders, Post-Traumatic ,Psychiatry and Mental health ,Clinical Psychology ,Refugees ,Mental Health ,Asian ,Humans ,Anxiety ,Aged - Abstract
Hmong adults who are Vietnam War refugees have been exposed to refugee-related trauma, but little is known about associations between patterns of trauma exposure and mental health outcomes in Hmong adults. We examined patterns of trauma exposure and mental health symptoms (i.e., somatization, depression, anxiety, and probable posttraumatic stress disorder [PTSD]) in three generations of Hmong adults (N = 219). Trauma exposure and probable PTSD were measured using the Harvard Trauma Questionnaire-Hmong Version. Somatization, depression, and anxiety symptoms were measured using the Brief Symptom Inventory. Latent class analysis (LCA) and auxiliary analysis of sociodemographic characteristics and mental health symptoms were performed. The best-fitting LCA model described three distinct classes: complex and pervasive trauma (60.3%), combat situation and deprivation trauma (26.0%), and low exposure to refugee-related trauma (13.7%). Participants in the complex and pervasive trauma class were the oldest, had the shortest U.S. residency, were the least proficient in English, and reported the most severe mental health symptoms; those in the combat situation and deprivation trauma class were the youngest, moderately proficient in English, and reported moderate mental health symptoms; and those in the low exposure to refugee-related trauma class were the most proficient in English, had the longest U.S. residency, and reported the least severe mental health symptoms. Our findings call for surveillance and a trauma-informed approach for Hmong elders with limited English proficiency, who have a high risk of experiencing accumulative effects of refugee-related trauma and are susceptible to poor mental health outcomes.
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- 2022
24. Stem cell therapy for Crohn’s disease: systematic review and meta-analysis of preclinical and clinical studies
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Feiqiong Gao, Hongcui Cao, Wenyi Chen, Qigu Yao, Jiong Yu, Ruo Wang, Pan Li, and Jian Wu
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Crohn’s disease ,medicine.medical_specialty ,Medicine (General) ,medicine.medical_treatment ,Systematic review and meta-analysis ,Remission rate ,Medicine (miscellaneous) ,Colon length ,Review ,Stem cells ,QD415-436 ,Biochemistry, Genetics and Molecular Biology (miscellaneous) ,Inflammatory bowel disease ,Gastroenterology ,Biochemistry ,Mice ,R5-920 ,Crohn Disease ,Internal medicine ,medicine ,Animals ,Humans ,Crohn's disease ,business.industry ,Crohn’s disease activity index ,Mesenchymal stem cell ,Hematopoietic Stem Cell Transplantation ,Mesenchymal Stem Cells ,Cell Biology ,Stem-cell therapy ,medicine.disease ,Crohn's Disease Activity Index ,Rats ,Transplantation ,Clinical trial ,Molecular Medicine ,Histopathological score ,Stem cell ,business - Abstract
Background We explored whether stem cell therapy was effective for animal models and patients with Crohn’s disease (CD). Methods We searched five online databases. The relative outcomes were analyzed with the aid of GetData Graph Digitizer 2.26 and Stata 16.0 software. The SYRCLE risk of bias tool and the MINORS tool were used to assess study quality. Results We evaluated 46 studies including 28 animal works (n = 567) and 18 human trials (n = 360). In the animal studies, the disease activity index dramatically decreased in the mesenchymal stem cell (MSC) treatment groups compared to the control group. Rats and mice receiving MSCs exhibited longer colons [mice: standardized mean difference (SMD) 2.84, P = 0.000; rats: SMD 1.44, P = 0.029], lower histopathological scores (mice: SMD − 4.58, p = 0.000; rats: SMD − 1.41, P = 0.000) and lower myeloperoxidase levels (SMD − 6.22, P = 0.000). In clinical trials, stem cell transplantation reduced the CD activity index (SMD − 2.10, P = 0.000), the CD endoscopic index of severity (SMD − 3.40, P = 0.000) and simplified endoscopy score for CD (SMD − 1.71, P = 0.000) and improved the inflammatory bowel disease questionnaire score (SMD 1.33, P = 0.305) compared to control values. CD patients maintained high remission rates for 3–24 months after transplantation. Conclusions Stem cell transplantation is a valuable supplementary therapy for CD.
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- 2021
25. Assessing a sustainable manufacturing route to lapatinib
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Roderick T. Stark, Dominic R. Pye, Wenyi Chen, Oliver J. Newton, Benjamin J. Deadman, Philip W. Miller, Jenny-Lee Panayides, Darren L. Riley, Klaus Hellgardt, and King Kuok (Mimi) Hii
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Fluid Flow and Transfer Processes ,Technology ,Engineering, Chemical ,Science & Technology ,Process Chemistry and Technology ,Chemistry, Multidisciplinary ,EGFR ,Catalysis ,Chemistry ,Engineering ,Chemistry (miscellaneous) ,Physical Sciences ,Chemical Engineering (miscellaneous) ,INHIBITORS - Abstract
A synthetic route to an anti-cancer drug, lapatinib, was devised to support the development of a sustainable manufacturing process in South Africa. Quantitative metrics were employed to evaluate the sustainability of the key steps of the reaction.
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- 2022
26. A pointwise estimate for pseudo-differential operators
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Guangqing Wang and Wenyi Chen
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General Mathematics - Abstract
Let [Formula: see text] be a pseudo-differential operator defined by the symbol [Formula: see text] with [Formula: see text] [Formula: see text]. It is shown that if [Formula: see text], then the operator satisfies the following pointwise estimate: [Formula: see text] for all [Formula: see text] and all Schwartz function [Formula: see text] Here, [Formula: see text] denotes the John-Nirenberg sharp function of [Formula: see text] and [Formula: see text] stands for the Hardy–Littlewood maximal operator.
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- 2022
27. Unsupervised Foggy Scene Understanding via Self Spatial-Temporal Label Diffusion
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Liang Liao, Wenyi Chen, Jing Xiao, Zheng Wang, Chia-Wen Lin, and Shin'ichi Satoh
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FOS: Computer and information sciences ,Computer Vision and Pattern Recognition (cs.CV) ,Image Processing, Computer-Assisted ,Computer Science - Computer Vision and Pattern Recognition ,Computer Graphics and Computer-Aided Design ,Weather ,Software ,Semantics - Abstract
Understanding foggy image sequence in the driving scenes is critical for autonomous driving, but it remains a challenging task due to the difficulty in collecting and annotating real-world images of adverse weather. Recently, the self-training strategy has been considered a powerful solution for unsupervised domain adaptation, which iteratively adapts the model from the source domain to the target domain by generating target pseudo labels and re-training the model. However, the selection of confident pseudo labels inevitably suffers from the conflict between sparsity and accuracy, both of which will lead to suboptimal models. To tackle this problem, we exploit the characteristics of the foggy image sequence of driving scenes to densify the confident pseudo labels. Specifically, based on the two discoveries of local spatial similarity and adjacent temporal correspondence of the sequential image data, we propose a novel Target-Domain driven pseudo label Diffusion (TDo-Dif) scheme. It employs superpixels and optical flows to identify the spatial similarity and temporal correspondence, respectively and then diffuses the confident but sparse pseudo labels within a superpixel or a temporal corresponding pair linked by the flow. Moreover, to ensure the feature similarity of the diffused pixels, we introduce local spatial similarity loss and temporal contrastive loss in the model re-training stage. Experimental results show that our TDo-Dif scheme helps the adaptive model achieve 51.92% and 53.84% mean intersection-over-union (mIoU) on two publicly available natural foggy datasets (Foggy Zurich and Foggy Driving), which exceeds the state-of-the-art unsupervised domain adaptive semantic segmentation methods. Models and data can be found at https://github.com/velor2012/TDo-Dif., IEEE Transactions on Image Processing 2022
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- 2022
28. The effect of baffle on flow structures and dynamics stirred by pitch blade turbine
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Jie Jin, Hui Zhang, Ying Fan, Jiao Sun, and Wenyi Chen
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Convection ,Materials science ,Turbulence ,General Chemical Engineering ,Flow (psychology) ,Baffle ,02 engineering and technology ,General Chemistry ,Mechanics ,021001 nanoscience & nanotechnology ,01 natural sciences ,Turbine ,010305 fluids & plasmas ,Impeller ,Circulation (fluid dynamics) ,Particle image velocimetry ,0103 physical sciences ,0210 nano-technology - Abstract
• In order for a better understanding of how baffle impacts on the flow field stirred by pitched blade turbine (PBT), the Particle Image Velocimetry (PIV) experiment was conducted in baffled and unbaffled tank, with time-averaged method, phase-resolved method and Proper Orthogonal Decomposition (POD) method applied to analyze the turbulent characteristics. The POD quadruple decomposition method was adopted to decompose the flow structures of different scales. As indicated by the experimental results, in the measured area, an independent circulation area develops under the impeller, thus forming a pattern of double circulation flow in the unbaffled tank. There is a relatively concentrated distribution of incoherent flow structures in the stirred flow field, and these small-scale flow structures hinder transfer to the whole stirred tank, which makes it easy for the difference in local concentration to arise. With the addition of baffle, the axial discharge of fluid is enhanced, and the independent circulation area under the turbine shows change, and the large-scale convection of main body develops. The stirring-induced incoherent flow structure shows a wider range of distribution, while the small-scale structure under the stirring tank creates a more favorable condition for the diffusion into the whole stirred tank.
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- 2021
29. On Lp-boundedness of Fourier Integral Operators
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Jie Yang, Guangqing Wang, and Wenyi Chen
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010104 statistics & probability ,Pure mathematics ,Amplitude ,Functional analysis ,010102 general mathematics ,Phase (waves) ,0101 mathematics ,01 natural sciences ,Analysis ,Fourier integral operator ,Potential theory ,Mathematics - Abstract
In this paper, we get an Lp boundedness of Fourier integral operators with rough amplitude $a\in L^{\infty } S^{m}_{\varrho },~$ and phase $\varphi \in L^{\infty }{\Phi }^{2}$ for $1\leq p\leq +\infty $ . This is an improvement of the corresponding results in Dos Santos Ferreira and Staubach (Mem. Amer. Math. Soc. 229, 1074, 2014).
- Published
- 2021
30. Experimental study on near wake shedding structure of pyramid roughness element in liquid–solid two-phase turbulent boundary layer
- Author
-
Yuting Cheng, Jiao Sun, Pi Chen, and Wenyi Chen
- Subjects
Fluid Flow and Transfer Processes ,Nuclear Energy and Engineering ,Mechanical Engineering ,General Chemical Engineering ,Aerospace Engineering - Published
- 2023
31. Advances in bismuth-telluride-based thermoelectric devices: Progress and challenges
- Author
-
Tianyi Cao, Xiao-Lei Shi, Meng Li, Boxuan Hu, Wenyi Chen, Wei-Di Liu, Wanyu Lyu, Jennifer MacLeod, and Zhi-Gang Chen
- Published
- 2023
32. The Endpoint Estimate for Fourier Integral Operators
- Author
-
Guangqing Wang, Jie Yang, and Wenyi Chen
- Subjects
010101 applied mathematics ,Physics ,Combinatorics ,General Mathematics ,010102 general mathematics ,General Physics and Astronomy ,0101 mathematics ,Oscillatory integral ,01 natural sciences ,Fourier integral operator ,Bounded operator - Abstract
Let Ta,ϕ be a Fourier integral operator defined by the oscillatory integral $${T_{a,\varphi }}u(x) = {1 \over {{{(2\pi )}^n}}}\int_{{^n}} {{e^{{\rm{i}}\varphi (x,\xi )}}} a(x,\xi )\hat u(\xi ){\rm{d}}\xi,$$ where $$a \in S_{\varrho,\delta }^m$$ and ϕ ∈ Φ2, satisfying the strong non-degenerate condition. It is shown that if 0 < ϱ ≤ 1, 0 ≤ δ < 1 and $$ \le {{{\varrho ^2} - n} \over 2}$$ , then Ta,ϕ is a bounded operator from L∞(ℝn) to BMO(ℝn).
- Published
- 2021
33. Immobilization of Lecitase
- Author
-
Wenyi, Chen, Maomao, Kou, Lin, Li, Bing, Li, Jianrong, Huang, Shudong, Fan, Li, Xu, and Nanjing, Zhong
- Subjects
Enzymes, Immobilized ,Silicon Dioxide ,Phospholipids ,Soybean Oil - Abstract
In this study, SBA-15 was functionalized by organic groups (-CH
- Published
- 2022
34. Analyses of True-Triaxial Hydraulic Fracturing of Granite Samples for an Enhanced Geothermal System
- Author
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Tao Zhang, Qinhong Hu, Wenyi Chen, Yang Gao, De Li, and Xiating Feng
- Subjects
Geology - Abstract
The fracturing behavior of enhanced geothermal system (EGS) reservoirs merits investigation under field-relevant temperature and stress conditions, in order to understand the creation of an extensive fracture network that helps achieve a high heat exchange efficiency. In this work, hydraulic fracturing tests were conducted on two 300 mm sized cubic granite samples at room (32°C) and field-relevant (250°C) temperatures under true triaxial compression conditions. The failure behavior and fracturing plane were studied using acoustic emission (AE) testing, μm-scale computed tomography (μm-CT), and scanning electronic microscopy (SEM), in addition to the monitoring and analyses of pressure-flow curve during fracturing. The results show that (1) at the macroscale, the strength of the granite sample was weakened at high (field-relevant) temperature, as shown by a decrease in the breakdown pressure and increase in closure pressure from the pressure-flow curve; (2) at the microscale, the failure pattern of grains during fracturing did not differ much at high and room temperatures for both intergranular and transgranular fractures; and (3) due to upscaling issues from the laboratory to field, however, the laboratory experiment will not directly provide some critical parameters (e.g., mud window pressure needed for fracture initiation and borehole failure avoidance) needed for an EGS field exploration.
- Published
- 2022
35. Mesenchymal stem cells protect against ferroptosis via exosome-mediated stabilization of SLC7A11 in acute liver injury
- Author
-
Feiyan Lin, Wenyi Chen, Jiahang Zhou, Jiaqi Zhu, Qigu Yao, Bing Feng, Xudong Feng, Xiaowei Shi, Qiaoling Pan, Jiong Yu, Lanjuan Li, and Hongcui Cao
- Subjects
Cancer Research ,Cellular and Molecular Neuroscience ,Immunology ,Cell Biology - Abstract
Mesenchymal stem cells (MSCs) have attracted interest for their potential to alleviate liver injury. Here, the protective effect of MSCs on carbon tetrachloride (CCl4)-induced acute liver injury (ALI) was investigated. In this study, we illustrated a novel mechanism that ferroptosis, a newly recognized form of regulated cell death, contributed to CCl4-induced ALI. Subsequently, based on the in vitro and in vivo evidence that MSCs and MSC-derived exosomes (MSC-Exo) treatment achieved pathological remission and inhibited the production of lipid peroxidation, we proposed an MSC-based therapy for CCl4-induced ALI. More intriguingly, treatment with MSCs and MSC-Exo downregulated the mRNA level of prostaglandin-endoperoxide synthase 2 (Ptgs2) and lipoxygenases (LOXs) while it restored the protein level of SLC7A11 in primary hepatocytes and mouse liver, indicating that the inhibition of ferroptosis partly accounted for the protective effect of MSCs and MSC-Exo on ALI. We further revealed that MSC-Exo-induced expression of SLC7A11 protein was accompanied by increasing of CD44 and OTUB1. The aberrant expression of ubiquitinated SLC7A11 triggered by CCl4 could be rescued with OTUB1-mediated deubiquitination, thus strengthening SLC7A11 stability and thereby leading to the activation of system XC− to prevent CCl4-induced hepatocyte ferroptosis. In conclusion, we showed that MSC-Exo had a protective role against ferroptosis by maintaining SLC7A11 function, thus proposing a novel therapeutic strategy for ferroptosis-induced ALI.
- Published
- 2022
36. Recovery Dynamics of Intestinal Bacterial Communities of CCl4-Treated Mice with or without Mesenchymal Stem Cell Transplantation over Different Time Points
- Author
-
Hua Zha, Wenyi Chen, Hongcui Cao, Lanjuan Li, and Yanping Xu
- Subjects
0301 basic medicine ,medicine.medical_specialty ,Article Subject ,CCL4 ,Biology ,digestive system ,General Biochemistry, Genetics and Molecular Biology ,03 medical and health sciences ,0302 clinical medicine ,parasitic diseases ,medicine ,Survival rate ,Liver injury ,General Immunology and Microbiology ,Ruminococcus ,Mesenchymal stem cell ,General Medicine ,medicine.disease ,biology.organism_classification ,digestive system diseases ,Transplantation ,030104 developmental biology ,Immunology ,Medicine ,030211 gastroenterology & hepatology ,Histopathology ,Dysbiosis - Abstract
Liver injury has caused significant illness in humans worldwide. The dynamics of intestinal bacterial communities associated with natural recovery and therapy for CCl4-treated liver injury remain poorly understood. This study was designed to determine the recovery dynamics of intestinal bacterial communities in CCl4-treated mice with or without mesenchymal stem cell transplantation (i.e., MSC and CCl4 groups) at 48 h, 1 week (w), and 2 w. MSCs significantly improved the histopathology, survival rate, and intestinal structural integrity in the treated mice. The gut bacterial communities were determined with significant changes in both the MSC and CCl4 groups over time, with the greatest difference between the MSC and CCl4 groups at 48 h. The liver injury dysbiosis ratio experienced a decrease in the MSC groups and a rise in the CCl4 groups over time, suggesting the mice in the MSC group at 48 h and the CCl4 group at two weeks were at the least gut microbial dysbiosis status among the corresponding cohorts. Multiple OTUs and functional categories were associated with each of the bacterial communities in the MSC and CCl4 groups over time. Among these gut phylotypes, OTU1352_S24-7 was determined as the vital member in MSC-treated mice at 48 h, while OTU453_S24-7, OTU1213_Ruminococcaceae, and OTU841_Ruminococcus were determined as the vital phylotypes in CCl4-treated mice at two weeks. The relevant findings could assist the diagnosis of the microbial dysbiosis status of intestinal bacterial communities in the CCl4-treated cohorts with or without MSC transplantation.
- Published
- 2020
37. 𝐿𝑝-estimates for rough bi-parameter Fourier integral operators
- Author
-
Guangqing Wang and Wenyi Chen
- Subjects
010101 applied mathematics ,Applied Mathematics ,General Mathematics ,010102 general mathematics ,Mathematical analysis ,0101 mathematics ,01 natural sciences ,Fourier integral operator ,Mathematics - Abstract
In this paper, we study the L q {L^{q}} - L r {L^{r}} boundedness of bi-parameter Fourier integral operators defined by general rough Hörmander class amplitudes.
- Published
- 2020
38. On L 2 $L^{2}$ -boundedness of Fourier integral operators
- Author
-
Jie Yang, Wenyi Chen, and Jiang Zhou
- Subjects
lcsh:Mathematics ,Phase function ,Fourier integral operator ,lcsh:QA1-939 ,Pseudo-differential operator - Abstract
Let T a , φ $T_{a,\varphi }$ be a Fourier integral operator with symbol a and phase φ. In this paper, under the conditions a ( x , ξ ) ∈ L ∞ S ρ n ( ρ − 1 ) / 2 ( ω ) $a(x,\xi )\in L^{\infty }S^{n(\rho -1)/2}_{\rho }(\omega )$ and φ ∈ L ∞ Φ 2 $\varphi \in L^{\infty }\varPhi ^{2}$ , the authors show that T a , φ $T_{a,\varphi }$ is bounded from L 2 ( R n ) $L^{2}(\mathbb{R}^{n})$ to L 2 ( R n ) $L^{2}(\mathbb{R}^{n})$ .
- Published
- 2020
39. The Clinical Efficacy and Safety of Stem Cell Therapy for Diabetes Mellitus: A Systematic Review and Meta-Analysis
- Author
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Wenyi Chen, Bing Feng, Hongcui Cao, and Yazhen Zhang
- Subjects
0301 basic medicine ,Oncology ,medicine.medical_specialty ,endocrine system diseases ,medicine.medical_treatment ,regenerative medicine ,Review Article ,Pathology and Forensic Medicine ,Cell therapy ,03 medical and health sciences ,0302 clinical medicine ,systematic review ,stem cells ,Diabetes mellitus ,Internal medicine ,medicine ,business.industry ,Insulin ,Mesenchymal stem cell ,nutritional and metabolic diseases ,Cell Biology ,Stem-cell therapy ,medicine.disease ,Transplantation ,meta-analysis ,030104 developmental biology ,medicine.anatomical_structure ,diabetes mellitus ,Neurology (clinical) ,Bone marrow ,Geriatrics and Gerontology ,Stem cell ,cell therapy ,business ,030217 neurology & neurosurgery - Abstract
Diabetes mellitus (DM) is a chronic metabolic disease with high morbidity and mortality. Recently, stem cell-based therapy for DM has shown considerable promise. Here, we undertook a systematic review and meta-analysis of published clinical studies to evaluate the efficacy and safety of stem cell therapy for both type 1 DM (T1DM) and type 2 DM (T2DM). The PubMed, Cochrane Central Register of Controlled Trials, EMBASE, and ClinicalTrials.gov databases were searched up to November 2018. We employed a fixed-effect model using 95% confidence intervals (CIs) when no statistically significant heterogeneity existed. Otherwise, a random-effects statistical model was used. Twenty-one studies met our inclusion criteria: ten T1DM studies including 226 patients and eleven T2DM studies including 386 patients. Stem cell therapy improved C-peptide levels (mean difference (MD), 0.41; 95% CI, 0.06 to 0.76) and glycosylated hemoglobin (HbA1c; MD, -3.46; 95% CI, -6.01 to -0.91) for T1DM patients. For T2DM patients, stem cell therapy improved C-peptide levels (MD, 0.33; 95% CI, 0.07 to 0.59), HbA1c (MD, -0.87; 95% CI, -1.37 to -0.37) and insulin requirements (MD, -35.76; 95% CI, -40.47 to -31.04). However, there was no significant change in fasting plasma glucose levels (MD, -0.52; 95% CI, -1.38 to 0.34). Subgroup analyses showed significant HbA1c and C-peptide improvements in patients with T1DM treated with bone marrow hematopoietic stem cells (BM-HSCs), while there was no significant change in the mesenchymal stem cell (MSC) group. In T2DM, HbA1c and insulin requirements decreased significantly after MSC transplantation, and insulin requirements and C-peptide levels were significantly improved after bone marrow mononuclear cell (BM-MNC) treatment. Stem cell therapy is a relatively safe and effective method for selected individuals with DM. The data showed that BM-HSCs are superior to MSCs in the treatment of T1DM. In T2DM, MSC and BM-MNC transplantation showed favorable therapeutic effects.
- Published
- 2020
40. Molecular mechanism underlying the difference in proliferation between placenta‐derived and umbilical cord‐derived mesenchymal stem cells
- Author
-
Xudong Feng, Bing Feng, Lanjuan Li, Jinfeng Yang, Jingqi Liu, Wenyi Chen, Yang Li, Hongcui Cao, Jiong Yu, Jiaqi Zhu, Xiaowei Shi, Qiaoling Pan, and Yanping Xu
- Subjects
Proteomics ,0301 basic medicine ,Small interfering RNA ,Physiology ,Placenta ,Clinical Biochemistry ,Umbilical Cord ,03 medical and health sciences ,0302 clinical medicine ,Western blot ,Pregnancy ,medicine ,Humans ,Gene silencing ,Wnt Signaling Pathway ,Cells, Cultured ,beta Catenin ,Cell Proliferation ,Cell Nucleus ,YAP1 ,Gene knockdown ,medicine.diagnostic_test ,Chemistry ,Mesenchymal stem cell ,Wnt signaling pathway ,Mesenchymal Stem Cells ,Cell Biology ,Up-Regulation ,Cell biology ,030104 developmental biology ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,Female ,Transcription Factors - Abstract
The placenta and umbilical cord are pre-eminent candidate sources of mesenchymal stem cells (MSCs). However, placenta-derived MSCs (P-MSCs) showed greater proliferation capacity than umbilical cord-derived MSCs (UC-MSCs) in our study. We investigated the drivers of this proliferation difference and elucidated the mechanisms of proliferation regulation. Proteomic profiling and Gene Ontology (GO) functional enrichment were conducted to identify candidate proteins that may influence proliferation. Using lentiviral or small interfering RNA infection, we established overexpression and knockdown models and observed changes in cell proliferation to examine whether a relationship exists between the candidate proteins and proliferation capacity. Real-time quantitative polymerase chain reaction, western blot analysis, and immunofluorescence assays were conducted to elucidate the mechanisms underlying proliferation. Six candidate proteins were selected based on the results of proteomic profiling and GO functional enrichment. Through further validation, yes-associated protein 1 (YAP1) and β-catenin were confirmed to affect MSCs proliferation rates. YAP1 and β-catenin showed increased nuclear colocalization during cell expansion. YAP1 overexpression significantly enhanced proliferation capacity and upregulated the expression of both β-catenin and the transcriptional targets of Wnt signaling, CCND1, and c-MYC, whereas silencing β-catenin attenuated this influence. We found that YAP1 directly interacts with β-catenin in the nucleus to form a transcriptional YAP/β-catenin/TCF4 complex. Our study revealed that YAP1 and β-catenin caused the different proliferation capacities of P-MSCs and UC-MSCs. Mechanism analysis showed that YAP1 stabilized the nuclear β-catenin protein, and also triggered the Wnt/β-catenin pathway, promoting proliferation.
- Published
- 2020
41. Higher exposure to childhood adversity associates with lower adult flourishing
- Author
-
Lin Wang, Zhiyuan Yu, Wenyi Chen, Juan Zhang, and Amie F. Bettencourt
- Subjects
Adult ,Male ,Young Adult ,Cross-Sectional Studies ,Mental Health ,Adolescent ,Adverse Childhood Experiences ,Surveys and Questionnaires ,Public Health, Environmental and Occupational Health ,Humans ,Female ,Violence - Abstract
Background Adverse childhood experiences (ACEs) are prevalent and associated with negative health and social outcomes. However, our understanding of how patterns of ACEs exposure relate to positive outcomes in adulthood remains limited. This study aims to identify patterns of ACEs and examine associations with flourishing in a sample of Chinese young adults. Methods This cross-sectional study was conducted from August to November 2020. Young adults, ages 18–35, enrolled in undergraduate or graduate programs at universities in Mainland China were recruited through convenience and snowball sampling to participate in a survey. The exposure to ACEs was measured by the twelve-item Chinese version of the ACE-International Questionnaire. Additional measures included six domains of flourishing assessed using the Chinese version of the Flourishing Measure, and demographic covariates (i.e., gender, age, year in university, marital status). Descriptive statistical analysis and latent class analysis (LCA) were performed using SPSS 27 and Mplus 8.5. Results Participants included 9468 young adults (mean age = 20.1 years). Majority of participants were female (75.3%), undergraduate students (96.4%), and single (79.8%). Approximately 56% of participants reported at least one ACE; 7.0% reported four or more ACEs. Emotional neglect (33.2%), household violence (20.6%), and parental separation/divorce (13.9%) were the most frequently reported ACEs. LCA identified three ACEs classes: multiple maltreatment and household violence (4.7%), emotional neglect and household violence (16.2%), and low ACEs (79.1%). Individuals in the low ACEs class had the highest level of flourishing whereas individuals in multiple maltreatment and household violence had the lowest level of flourishing in all six domains. There were no significant differences in flourishing between the multiple maltreatment and household violence and the emotional neglect and household violence classes except in the physical and mental health (means = 6.17 vs 6.51, p = 0.02) and the financial and material stability domains (means = 5.25 vs 5.66, p = 0.04). Conclusions Patterns of multiple ACEs exposures were associated with lower levels of flourishing. Our findings have implications for efforts to prevent ACEs exposure through monitoring and promoting family well-being and routine screening to identify those with ACEs exposure to prevent negative social and health sequelae.
- Published
- 2022
42. The Impact of Economic Development on Higher Education : An Empirical Study of the Mediating Effect Model of Education Investment by Stata Software Analysis
- Author
-
Xiang Li, Yuan Gao, and Wenyi Chen
- Published
- 2022
43. Experimental Investigation on the Wake Structure of Teardrop-Shape Slender Body
- Author
-
Zhenze Han, Kangfu Sun, Wenyi Chen, and Jiao Sun
- Subjects
Environmental Engineering ,Ocean Engineering - Published
- 2022
44. Effects of Surfactant on Bounce Dynamic Behavior of a Deformable Bubble Near a Wall
- Author
-
Enbo Ju, Runze Cai, Haopeng Sun, Ying Fan, Jiao Sun, and Wenyi Chen
- Published
- 2022
45. Current Status and Training Needs of Trainee Anesthesiologists in Lung Transplantation Anesthesia in China: A Single-Center Survey
- Author
-
Yan Zhou, Zhong Qin, Guilong Wang, Wenyi Chen, and Xin Zhang
- Subjects
History ,Multidisciplinary ,Polymers and Plastics ,Business and International Management ,Industrial and Manufacturing Engineering - Abstract
Perioperative management involving anesthesiologists plays an important role in prognosis of recipients after lung transplantation. Since the development of lung transplantation, the demand for specialized anesthesiologists continues to increase. As the largest lung transplant center in China, the Wuxi People's Hospital was tasked with trainee anesthesiologists throughout the country in lung transplantation anesthesia. This study aimed to evaluate the current status and training needs of anesthesiologists for the anesthetic management of lung transplantation in Wuxi People's Hospital between 2015 to 2020.Overall, 53 trainee anesthesiologists for lung transplantation from 35 hospitals were investigated anonymously in our survey. The questionnaire included the anesthesiologists' demographic information, level of satisfaction, training needs and current status in their hospitals. We divided the doctors into two groups depending on the trainee anesthesiologists' seniority and professional title: intermediate and senior. Survey data were compared between the groups.Significantly more doctors in senior-level positions had clinical research experience than did doctors in intermediate-level positions (P = 0.041). All doctors were highly or very highly satisfied with the training received. Doctors in intermediate-level positions preferred training periods of 4-6 months, while those in senior-level positions preferred 1-3 months of training (P = 0.044). Most doctors considered theoretical courses to be lacking (69.0%), followed by a lack of scenario simulation teaching (54.8%). The most desirable programs were transesophageal echocardiography (TEE, 71.4%) and extracorporeal membrane oxygenation (ECMO, 64.3%). ECMO technology was available in the hospitals of 95.2% of respondents; however, only 2.4% of doctors said the anesthesiology department took charge of perioperative ECMO. Significantly more senior-level doctors chose calibrated pulse contour analysis (P = 0.018) and significantly more intermediate-level ones chose TEE (P = 0.049). Disappointingly, 21.4% doctors reported a lack of certification evaluation for trainee anesthesiologists at their hospitals.Different training programs should be set up according to the trainee anesthesiologists' level of seniority and training needs. Theoretical courses and scenario simulation training must be added to improve the training program. Moreover, the training of TEE and ECMO requires greater attention. Finally, a standardized completion assessment is required for trainee anesthesiologists.
- Published
- 2022
46. Development, Validation and Application of a Bridging ELISA for Detection of Antibodies against GQ1001 in Cynomolgus Monkey Serum
- Author
-
Tingting Liu, Yajun Sun, Xiaojie Deng, Lili Shi, Wenyi Chen, Wenjing Fang, Junliang Wu, Xiaotian Fan, Xiaoqiang Chen, Jianhua Sun, Gang Qin, Likun Gong, and Qiuping Qin
- Subjects
Chemistry (miscellaneous) ,anti-drug antibody ,Organic Chemistry ,Drug Discovery ,antibody–drug conjugate ,Molecular Medicine ,Pharmaceutical Science ,immunogenicity ,Physical and Theoretical Chemistry ,bridging ELISA ,Analytical Chemistry - Abstract
Immunogenicity is a major issue associated with the PK, efficacy, and safety evaluation of therapeutic protein products during pre-clinical and clinical studies. A multi-tiered approach consisting of screening, confirmatory, and titration assays has been widely adopted for anti-drug antibody testing. GQ1001, a recombinant humanized anti-human epidermal growth factor receptor 2 monoclonal antibody covalently linked to a cytotoxin of DM1, possesses a novel format of antibody–drug conjugates. In this study, we reported the development, validation, and application of an acid-dissociation bridging enzyme-linked immunosorbent assay for the detection of antibodies against GQ1001 in cynomolgus monkey serum. The sensitivity of the screening assay was 126.141 ng/mL in undiluted serum. The screening assay and confirmatory assay were neither affected by the naïve monkey serum nor by 2% and 5% (v/v) erythrocyte hemolysates. Moreover, the assay was not subject to interference by 2500 ng/mL of human IgG1 in the samples. Drug interference at low positive control (150 ng/mL) and high positive control (8000 ng/mL) of anti-GQ1001 antibodies was not observed when GQ1001 concentrations were below 3.125 μg/mL and 100 μg/mL, respectively. Furthermore, no hook effect was observed for the positive antibodies in the concentration range of 8 to 64 μg/mL. The validated assay was, thereafter, successfully applied to a single-dose toxicity study of GQ1001. Anti-drug antibody positive rates among dosing animals and testing samples were reported, and no significant impact was found on toxicokinetic outcomes.
- Published
- 2023
47. A velocity model in the wake of a thin plate parallel to uniform flow
- Author
-
Kangfu Sun, Jiao Sun, Ying Fan, and Wenyi Chen
- Subjects
Environmental Engineering ,Ocean Engineering - Published
- 2023
48. On the joint dynamics of the economic and environmental performances for collective take-back systems
- Author
-
Wenyi Chen, Beste Kucukyazici, and Maria Jesus Saenz
- Subjects
Economics and Econometrics ,Decision support system ,021103 operations research ,Landfill tax ,Circular economy ,05 social sciences ,0211 other engineering and technologies ,Pareto principle ,Legislation ,02 engineering and technology ,Management Science and Operations Research ,Environmental economics ,Economic surplus ,General Business, Management and Accounting ,Multi-objective optimization ,Industrial and Manufacturing Engineering ,0502 economics and business ,Business ,Pareto analysis ,050203 business & management - Abstract
The aim of this paper is to help regulators develop efficient recovery targets, to deliver desirable economic and environmental outcomes for collective product take-back systems. Two environmental measures—waste generation and energy consumption—are utilized jointly to evaluate the environmental performance of the legislation, whereas economic surplus is used to indicate the economic outcome. We develop a bi-level multi-objective formulation to capture the dynamics between a regulator, a producer, consumers, and the environment. A case study based on BSH Bosch and Siemens Home Appliances and Germany's WEEE take-back scheme is used for deriving policy and managerial insights. We find that the optimal waste generation is robust among all the Pareto solutions in every tested scenarios, as long as recycling is cheaper than landfilling. Our findings also hint the potential benefits of using subsidiary tools, such as a landfill tax and an energy cap, to enhance the overall environmental performance of take-back legislation. From a methodology perspective, a unique feature of the paper is the use of a multi-objective framework for take-back legislation that enables us to characterize the Pareto frontier. Secondly, from the practical perspective, this paper can help regulators with a policy design decision support tool that gradually guides to the most preferable policy, balancing the trade-offs between the three objectives.
- Published
- 2019
49. Optimization design of air filter and integrated device for roots blower
- Author
-
Mei Qi, Lei Liu, Qingguang Chen, Cheng Lu, and Wenyi Chen
- Published
- 2021
50. Numerical analysis of heat transfer enhancement of helical tube with twisted tapes under one-side heating
- Author
-
Mei Qi, Wenyi Chen, Qingguang Chen, Cheng Lu, and Xin Yao
- Published
- 2021
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