1,448 results on '"Pan, Li"'
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2. Rapid Selection of Patients Suitable for Deep Inspiration Breath-Hold Using an Automatic Delineating System and RapidPlan Model in Patients With Left Breast Cancer Undergoing Adjuvant Radiation Therapy With IMRT.
- Author
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Zhou YY, Li YN, Xu JF, Chen B, Li HL, Zheng YX, Pan LS, Cai LM, and Wang HM
- Subjects
- Humans, Female, Radiotherapy, Adjuvant, Middle Aged, Radiotherapy Dosage, Patient Selection, Aged, Inhalation, Mastectomy, Modified Radical, Adult, Breast Neoplasms radiotherapy, Breast Neoplasms surgery, Breath Holding, Radiotherapy Planning, Computer-Assisted methods, Heart radiation effects, Unilateral Breast Neoplasms radiotherapy, Unilateral Breast Neoplasms surgery, Radiotherapy, Intensity-Modulated methods, Organs at Risk radiation effects, Mastectomy, Segmental
- Abstract
Purpose: This study aimed to determine whether radiation therapy plans created using an automatic delineating system and a RapidPlan (RP) module could rapidly and accurately predict heart doses and benefit from deep inspiratory breath-hold (DIBH) in patients with left breast cancer., Methods and Materials: One hundred thirty-six clinically approved free breathing (FB) plans for patients with left breast cancer were included, defined as manual delineation-manual plan (MD-MP). A total of 104 of 136 plans were selected for RP model training. A total of 32 of 136 patients were automatically delineated by software, after which the RP generated plans, defined as automatic delineation-RapidPlan (AD-RP). In addition, 40 patients who used DIBH were included to analyze differences in heart benefits from DIBH., Results: Two RP models were established for post-breast-conserving surgery (BCS) and post-modified radical mastectomy. There were no significant differences in most of the dosimetric parameters between the MD-MP and AD-RP. The heart doses of the 2 plans were strongly correlated in patients after BCS (0.80 ≤ r ≤ 0.88, P < .05) and moderately correlated in patients after postmodified radical mastectomy (0.46 ≤ r ≤ 0.58, P <.05). The RP model predicted the mean heart dose (MHD) within ± 59.67 cGy and ± 63.32 cGy for patients who underwent the 2 surgeries described above. The heart benefits from DIBH were significantly greater in patients with FB-MHD ≥ 4 Gy than in those with FB-MHD < 4 Gy., Conclusions: The combined automatic delineation RP model allows for the rapid and accurate prediction of heart dose under FB in patients with left breast cancer. FB-MHD ≥ 4 Gy can be used as a dose threshold to select patients suitable for DIBH., (Published by Elsevier Inc.)
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- 2024
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3. The mechanism of short hypha formation and high protein production system mediated by cell wall integrity signaling pathway in Aspergillus niger.
- Author
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Yu L, Wang T, Wang B, and Pan L
- Abstract
Aspergillus niger is a cell factory widely used in industries to produce proteases, organic acids, drugs, and other substances. The hyphal morphology of A. niger is a complex differentiated elongated tubular structure, which limits its basic research and application. In this study, the mpkA, bck1, steC, and Tpk2 genes were successfully deleted using a quick way to knock out genes based on the RNP (Ribonucleoprotein) complex. The study showed that the knockout of mpkA and bck1 kinase gene strains resulted in smaller, denser colonies, short rod-shaped hypha, and a significant increase in glucoamylase secretion. The mechanism of short hypha formation and high protein production for A. niger is the cell wall integrity signaling (CWIS) pathway. The CWIS pathway passed through the bck1-mkkA-mpkA tertiary kinase to deliver phosphorylation signals to the rlmA transcription factor, which regulated the expression of the cell wall synthesis gene agsA, thus regulating hyphal morphology. The mpkA kinase regulated the expression of the transcription factor amyR, which affected the expression of the genes glaA and amyA, thus enhancing the expression of proteins in A. niger. This study provides a strategy for the regulation of hyphal morphology and promotes the application of A. niger in industrial production., Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Li Pan has patent #ZL202211388724.9 licensed to South China University of Technology. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024. Published by Elsevier B.V.)
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- 2024
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4. Development of a landing pad system for Aspergillus niger and its application in the overproduction of monacolin J.
- Author
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Yao L, Zheng J, Wang B, and Pan L
- Abstract
Aspergillus niger is a powerful and efficient cell factory, with the potential to synthesize valuable products as chassis cells. The use of microbial cell factories to produce monacolin J, a precursor for statin synthesis, as an alternative to chemical synthesis could meet increasing market demand. However, the need for precise large fragment gene editing and the availability of suitable integration loci hinders the application of this strain. Herein, we identified neutral integration sites of A. niger based on the combination of ATAC-seq, H3K4me3 epigenetic datasets. Next, a landing pad system was developed for the one-step integration of the MJ biosynthesis gene cluster (BGC) in A. niger. Furthermore, we optimized the precursor module supply, the auxiliary factor supply module of NADPH, the module for eliminating oxidative stress pressure, and the transporter module to improve the production of MJ. Finally, a multi-copy integration strategy was applied to the rapid integration of MJ BGC, achieving MJ titer up to 1851.52 mg/L at the 500 mL shaker level., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier GmbH. All rights reserved.)
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- 2024
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5. Viral proteins resolve the virus-vector conundrum during hemipteran-mediated transmission by subverting salicylic acid signaling pathway.
- Author
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Zhang JR, Liu YM, Li D, Wu YJ, Zhao SX, Wang XW, Liu SS, Walling LL, and Pan LL
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- Animals, Hemiptera virology, Plant Proteins metabolism, Plant Proteins genetics, HSP90 Heat-Shock Proteins metabolism, HSP90 Heat-Shock Proteins genetics, Salicylic Acid metabolism, Signal Transduction, Plant Diseases virology, Insect Vectors virology, Begomovirus physiology, Viral Proteins metabolism, Viral Proteins genetics, Nicotiana virology
- Abstract
Hemipteran insects transmit viruses when infesting plants, during which vectors activate salicylic acid (SA)-regulated antiviral defenses. How vector-borne plant viruses circumvent these antiviral defenses is largely unexplored. During co-infections of begomoviruses and betasatellites in plants, betasatellite-encoded βC1 proteins interfere with SA signaling and reduce the activation of antiviral resistance. βC1 inhibits SA-induced degradation of NbNPR3 (Nicotiana benthamiana nonexpressor of pathogenesis-related genes 3), a negative regulator of SA signaling. βC1 does not bind directly to NbNPR3, but regulates NbNPR3 degradation via heat shock protein 90s (NbHSP90s). NbHSP90s bind to both NbNPR3 and βC1 and suppress SA signaling. This viral success strategy appears to be conserved as it is also documented for viral proteins encoded by two aphid-borne viruses. Our findings reveal an exquisite mechanism that facilitates the persistence of vector-borne plant viruses and provide important insights into the intricacies of the virus life cycle., (© 2024. The Author(s).)
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- 2024
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6. Thirty years of 3-D urbanization in the Yangtze River Delta, China.
- Author
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Yin C, Chen R, Xiao X, Van de Voorde T, Qin Y, Guo X, Meng F, Pan L, Yao Y, and Li Y
- Abstract
Accurately capturing the urbanization process is essential for planning sustainable cities and realizing the United Nations Sustainable Development Goal 11. However, until recently, most of the studies on urban expansion in the world have focused on area growth but have little knowledge of height dynamics. This study mapped the spatial distribution of urban built-up areas (UBA) in the Yangtze River Delta (YRD), one of the most urbanized regions in China, to investigate the spatio-temporal evolution in both the horizontal and vertical directions from 1990 to 2020. We coupled and analyzed the horizontal and vertical urban expansion from the 3-D perspective and identified the dominant types. The results showed that 30 cities (73.17 % of the total number of cities) were increasing in the 3-D combined expansion intensity. The decreasing cities were mainly located in Anhui Province. Despite the increasing number of skyscrapers, horizontal growth has dominated urban expansion over the past three decades. The UBA area of the YRD has grown from 4,855.30 km
2 to 44,447.15 km2 , while the average building height has slowly decreased by 1.26 m. Significant unevenness and differences existed in horizontal and vertical expansions of varying provinces and cities. Our study can accurately grasp the 3-D urban expansion process in the YRD and could promote the efficient development and sustainable utilization of urban land resources in China and beyond., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier B.V. All rights reserved.)- Published
- 2024
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7. S-palmitoylation of MAP kinase is essential for fungal virulence.
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Duan Y, Li P, Zhang D, Wang L, Fang Y, Hu H, Mao Q, Zhou X, Zhao P, Li X, Wei J, Tang J, Pan L, Liu H, Chen X, Chen X, Hsiang T, Huang J, and Zheng L
- Abstract
S-palmitoylation is an important reversible protein post-translational modification in organisms. However, its role in fungi is uncertain. Here, we found the treatment of the rice false fungus Ustilaginoidea virens with S-palmitoylation inhibitor 2 BP resulted in a significant decrease in fungal virulence. Comprehensive identification of S-palmitoylation sites and proteins in U. virens revealed a total of 4,089 S-palmitoylation sites identified among 2,192 proteins and that S-palmitoylated proteins were involved in diverse biological processes. Among the five palmitoyltransferases, UvPfa3 and UvPfa4 were found to regulate the pathogenicity of U. virens . We then performed quantitative proteomic analysis of ∆ UvPfa3 and ∆ UvPfa4 mutants. Interestingly, S-palmitoylated proteins were significantly enriched in the mitogen-activated protein kinase and autophagy pathways, and MAP kinase UvSlt2 was confirmed to be an S-palmitoylated protein which was palmitoylated by UvPfa4. Mutations of S-palmitoylation sites in UvSlt2 resulted in significantly reduced fungal virulence and decreased kinase enzymatic activity and phosphorylation levels. Simulations of molecular dynamics demonstrated mutation of S-palmitoylation sites in UvSlt2 causing decreased hydrophobic solvent-accessible surface area, thereby weakening the bonding force with its substrate UvRlm1. Taken together, S-palmitoylation promotes U. virens virulence through palmitoylation of MAP kinase UvSlt2 by palmitoyltransferase UvPfa4. This enhances the enzymatic phosphorylation activity of the kinase, thereby increasing hydrophobic solvent-accessible surface area and binding activity between the UvSlt2 enzyme and its substrate UvRlm1. Our studies provide a framework for dissecting the biological functions of S-palmitoylation and reveal an important role for S-palmitoylation in regulating the virulence of the pathogen.IMPORTANCES-palmitoylation is an important post-translational lipid modification of proteins. However, its role in fungi is uncertain. In this study, we found that S-palmitoylation promotes virulence of rice false smut fungus U. virens through palmitoylation of MAP kinase UvSlt2 by palmitoyltransferase UvPfa4. This enhances the enzymatic phosphorylation activity of the kinase, thereby increasing hydrophobic solvent-accessible surface area and binding activity between the UvSlt2 enzyme and its substrate UvRlm1. Our studies provide a framework for dissecting the biological functions of S-palmitoylation and reveal an important role for S-palmitoylation in regulating the virulence of the pathogen. This is the first functional study to reveal the role of S-palmitoylation in fungal virulence.
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- 2024
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8. Altered brainstem-cortex activation and interaction in migraine patients: somatosensory evoked EEG responses with machine learning.
- Author
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Hsiao FJ, Chen WT, Liu HY, Wu YT, Wang YF, Pan LH, Lai KL, Chen SP, Coppola G, and Wang SJ
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- Humans, Female, Male, Adult, Cerebral Cortex physiopathology, Middle Aged, Young Adult, Support Vector Machine, Migraine Disorders physiopathology, Migraine Disorders diagnosis, Evoked Potentials, Somatosensory physiology, Brain Stem physiopathology, Machine Learning, Electroencephalography methods
- Abstract
Background: To gain a comprehensive understanding of the altered sensory processing in patients with migraine, in this study, we developed an electroencephalography (EEG) protocol for examining brainstem and cortical responses to sensory stimulation. Furthermore, machine learning techniques were employed to identify neural signatures from evoked brainstem-cortex activation and their interactions, facilitating the identification of the presence and subtype of migraine., Methods: This study analysed 1,000-epoch-averaged somatosensory evoked responses from 342 participants, comprising 113 healthy controls (HCs), 106 patients with chronic migraine (CM), and 123 patients with episodic migraine (EM). Activation amplitude and effective connectivity were obtained using weighted minimum norm estimates with spectral Granger causality analysis. This study used support vector machine algorithms to develop classification models; multimodal data (amplitude, connectivity, and scores of psychometric assessments) were applied to assess the reliability and generalisability of the identification results from the classification models., Results: The findings revealed that patients with migraine exhibited reduced amplitudes for responses in both the brainstem and cortical regions and increased effective connectivity between these regions in the gamma and high-gamma frequency bands. The classification model with characteristic features performed well in distinguishing patients with CM from HCs, achieving an accuracy of 81.8% and an area under the curve (AUC) of 0.86 during training and an accuracy of 76.2% and an AUC of 0.89 during independent testing. Similarly, the model effectively identified patients with EM, with an accuracy of 77.5% and an AUC of 0.84 during training and an accuracy of 87% and an AUC of 0.88 during independent testing. Additionally, the model successfully differentiated patients with CM from patients with EM, with an accuracy of 70.5% and an AUC of 0.73 during training and an accuracy of 72.7% and an AUC of 0.74 during independent testing., Conclusion: Altered brainstem-cortex activation and interaction are characteristic of the abnormal sensory processing in migraine. Combining evoked activity analysis with machine learning offers a reliable and generalisable tool for identifying patients with migraine and for assessing the severity of their condition. Thus, this approach is an effective and rapid diagnostic tool for clinicians., (© 2024. The Author(s).)
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- 2024
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9. Soybean Agglutinin Induced Apoptotic Effects by Down-Regulating ANXA2 Through FAK Pathway in IPEC-J2 Cells.
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E T, Xu C, Fan X, Liu J, Zhao J, Bao N, Zhao Y, Farouk MH, Ji Y, Wu Z, Pan L, and Qin G
- Abstract
Soybean agglutinin (SBA) is an anti-nutritional factor in soybean, possesses toxic effects by binding to intestinal epithelial cells, and finally interferes the digestion and absorption of nutrients in humans and animals. Annexin A2 (ANXA2) is one of the SBA-specific binding proteins in intestinal epithelial cells and participates in multiple cellular biological processes. However, whether SBA affects apoptosis through ANXA2 and its apoptosis-related pathway remains unclear. IPEC-J2 is an ideal model to study human intestinal health. Therefore, this study aims to investigate the effects of ANXA2 on SBA-induced intestinal epithelial cell apoptosis and the related pathway mechanism using IPEC-J2 as a cell model. The results showed that SBA induced the apoptosis through FAK signal pathway and decreased the gene and protein expressions of ANXA2 in IPEC-J2. The expression of ANXA2 protein had a negative correlation with the apoptosis rates, and a positive correlation with the expression of FAK protein and FAK pathway downstream proteins. In conclusion, SBA induced apoptosis of IPEC-J2 cells by downregulating the expression of ANXA2, which activated the FAK pathway. These findings highlight the toxic mechanism of SBA, which will provide basis for studying the toxicity mechanisms of other food-derived anti-nutrients and provide a new perspective for human gastrointestinal health and related cancer treatment., (© 2024 Wiley‐VCH GmbH. Published by John Wiley & Sons Ltd.)
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- 2024
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10. Effects of long-term exposure to air pollutant mixture on blood pressure in typical areas of North China.
- Author
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Liu Q, Pan L, He H, Hu Y, Tu J, Zhang L, Sun Z, Cui Z, Han X, Huang H, Lin B, Fan Y, Ji Y, and Shan G
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- China, Humans, Male, Middle Aged, Adult, Female, Aged, Air Pollution adverse effects, Ozone toxicity, Young Adult, Bayes Theorem, Air Pollutants toxicity, Air Pollutants analysis, Particulate Matter toxicity, Particulate Matter analysis, Blood Pressure drug effects, Environmental Exposure adverse effects, Hypertension chemically induced, Hypertension epidemiology
- Abstract
Background: Studies about the combined effects of gaseous air pollutants and particulate matters are still rare., Objectives: This study was performed based on baseline survey of the Diverse Life-Course Cohort in the Beijing-Tianjin-Hebei (BTH) Region of North China to evaluate the association of long-term air pollutants with blood pressure and the combined effect of the air pollutants mixture among 32821 natural han population aged 20 years or above., Methods: Three-year average exposure to air pollutants (PM
10 , PM2.5 , PM1 , O3 , SO2 , NO2 , and CO) and PM2.5 components [black carbon (BC), ammonium (NH4 + ), nitrate (NO3 - ), sulfate (SO4 2- ), and organic matter (OM)] of residential areas were calculated based on well-validated models. Generalized linear mixed models (GLMMs) were used to estimate the associations of air pollutants exposure with the systolic blood pressure (SBP), diastolic blood pressure (DBP), Mean arterial pressure (MAP), pulse pressure (PP) and prevalent hypertension. Quantile g-Computation and Bayesian Kernel Machine Regression (BKMR) were employed to assess the combined effect of the air pollutant mixture., Results: We found that long-term exposures of O3 , PM2.5 , and PM2.5 components were stably and strongly associated with elevated SBP, DBP, and MAP and prevalent hypertension. O3 increased SBP, DBP, and MAP at a similar extent, but with greater effects; while, PM2.5 and PM2.5 components had a greater impact on SBP than DBP, which increased PP simultaneously. In multi-pollutant models, the combined effects of the air pollutant mixture on blood pressure and prevalent hypertension was predominantly influenced by O3 , PM2.5 , and O3 , OM in different models, respectively. For example, O3 , PM2.5 contributed 57.25 %, 39.22 % of the positive combined effect of the air pollutant mixture on SBP; and O3 , OM positively contributed 70.00 %, 30.00 % on prevalent hypertension, respectively. There were interactions between O3 , CO, SO2 and PM2.5 components on hbp, SBP and PP., Conclusions: The results showed positive associations of air pollutant mixtures with blood pressure, where O3 and PM2.5 (especially OM) might be primary contributors. There were interactions between gaseous air pollutants and PM2.5 components on blood pressure and prevalent hypertension., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier Inc. All rights reserved.)- Published
- 2024
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11. Exploring the lipid oxidation mechanisms during pumpkin seed kernels storage based on lipidomics: From phenomena, substances, and metabolic mechanisms.
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Pan L, Xu W, Gao Y, Ouyang H, Liu X, Wang P, Yu X, Xie T, and Li S
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- Lipids chemistry, Lipids analysis, Gas Chromatography-Mass Spectrometry, Lipid Metabolism, Chromatography, High Pressure Liquid, Cucurbita chemistry, Cucurbita metabolism, Seeds chemistry, Seeds metabolism, Oxidation-Reduction, Food Storage, Lipidomics
- Abstract
The study investigated the lipid oxidation of pumpkin seed kernels (PSK) under different storage conditions (room temperature, vacuum-room temperature, refrigeration, and vacuum-refrigeration) using HPLC-MS and GC-MS. Experimental results found the vacuum-refrigeration group showed the lowest PV (0.24 g/100 g), diene (8.68), hexanal (356.64 ± 16.06 ng/g), and nonanal (132.05 ± 8.38 ng/g) after a 9-month storage. A total of 586 lipids, including 6 classes and 27 subclasses, were detected, 46 of which showed significant differences. Refrigeration samples had the highest diacylglycerol content, while room temperature samples demonstrated the highest triacylglycerol and phosphatidylcholine content. Differential lipid metabolite analyses indicated that storage conditions mainly affected glycerolipid metabolism, glycerophospholipid metabolism, and sphingolipid metabolism pathways in PSK, while glycerolipid and glycerophospholipid metabolism were still dominant. It revealed that refrigeration was more effective than vacuum in inhibiting the oxidation of PSK. These findings could offer valuable references for the storage, transportation, preservation, and the development and utilization of PSK., Competing Interests: Declaration of competing interest These authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023. Published by Elsevier Ltd.)
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- 2024
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12. From Cluster Assumption to Graph Convolution: Graph-Based Semi-Supervised Learning Revisited.
- Author
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Wang Z, Ding H, Pan L, Li J, Gong Z, and Yu PS
- Abstract
Graph-based semi-supervised learning (GSSL) has long been a research focus. Traditional methods are generally shallow learners, based on the cluster assumption. Recently, graph convolutional networks (GCNs) have become the predominant techniques for their promising performance. However, a critical question remains largely unanswered: why do deep GCNs encounter the oversmoothing problem, while traditional shallow GSSL methods do not, despite both progressing through the graph in a similar iterative manner? In this article, we theoretically discuss the relationship between these two types of methods in a unified optimization framework. One of the most intriguing findings is that, unlike traditional ones, typical GCNs may not effectively incorporate both graph structure and label information at each layer. Motivated by this, we propose three simple but powerful graph convolution methods. The first, optimized simple graph convolution (), is a supervised method, which guides the graph convolution process with labels. The others are two "no-learning" unsupervised methods: graph structure preserving graph convolution () and its multiscale version GGCM, both aiming to preserve the graph structure information during the convolution process. Finally, we conduct extensive experiments to show the effectiveness of our methods.
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- 2024
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13. Predictive models for cholesterol crystals and plaque vulnerability in acute myocardial infarction: Insights from an optical coherence tomography study.
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Deng C, Liu Z, Li C, Xu G, Zhang R, Bai Z, Hu X, Xia Q, Pan L, Wang S, Xia J, Zhao R, and Shi B
- Abstract
Background: Cholesterol crystals (CCs) are recognized as a risk factor for vulnerable atherosclerotic plaque rupture (PR) and major adverse cardiovascular events. However, their predictive factors and association with plaque vulnerability in patients with acute myocardial infarction (AMI) remain insufficiently explored. Therefore, This study aims to investigate the association between CCs and plaque vulnerability in culprit lesions of AMI patients, identify the factors influencing CCs formation, and develop a predictive model for CCs., Methods: A total of 431 culprit lesions from AMI patients who underwent pre-intervention optical coherence tomography (OCT) imaging were analyzed. Patients were divided into groups based on the presence or absence of CCs and PR. The relationship between CCs and plaque vulnerability was evaluated. A risk nomogram for predicting CCs was developed using the least absolute shrinkage and selection operator and logistic regression analysis., Results: CCs were identified in 64.5 % of patients with AMI. The presence of CCs was associated with a higher prevalence of vulnerable plaque features, such as thin-cap fibroatheroma (TCFA), PR, macrophage infiltration, neovascularization, calcification, and thrombus, compared to patients without CCs. The CCs model demonstrated an area under the curve (AUC) of 0.676 for predicting PR. Incorporating CCs into the TCFA model (AUC = 0.656) significantly enhanced predictive accuracy, with a net reclassification improvement index of 0.462 (95 % confidence interval [CI]: 0.263-0.661, p < 0.001) and an integrated discrimination improvement index of 0.031 (95 % CI: 0.013-0.048, p = 0.001). Multivariate regression analysis identified the atherogenic index of plasma (odds ratio [OR] = 2.417), TCFA (OR = 1.759), macrophage infiltration (OR = 3.863), neovascularization (OR = 2.697), calcification (OR = 1.860), and thrombus (OR = 2.430) as independent risk factors for CCs formation. The comprehensive model incorporating these factors exhibited reasonable discriminatory ability, with an AUC of 0.766 (95 % CI: 0.717-0.815) in the training set and 0.753 (95 % CI: 0.704-0.802) in the internal validation set, reflecting good calibration. Decision curve analysis suggested that the model has potential clinical utility within a threshold probability range of approximately 18 % to 85 %., Conclusions: CCs were associated with plaque vulnerability in the culprit lesions of AMI patients. Additionally, this study identified key factors influencing CCs formation and developed a predictive model with potential clinical applicability., Competing Interests: Declaration of competing interest None., (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
- Published
- 2024
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14. Exponential or Unimodal Relationships Between Nighttime Ecosystem Respiration and Temperature at the Eddy Covariance Flux Tower Sites.
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Meng C, Xiao X, Wagle P, Zhang C, Pan L, Pan B, Qin Y, and Newman GS
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- Global Warming, Ecosystem, Carbon Dioxide metabolism, Temperature, Carbon Cycle
- Abstract
Ecosystem respiration is a key flux in the terrestrial carbon cycle and is affected substantially by temperature. This work analysed the time series data of nighttime net ecosystem exchange of carbon dioxide (NEE
night ) from 196 FLUXNET2015 sites to re-evaluate the relationships between NEEnight and temperature. A total of 93 sites (48%) were identified to have a unimodal relationship between NEEnight and temperature. Site-specific apparent optimum temperature parameters were then estimated at these sites. We further assessed the impacts of using exponential or unimodal equations on NEEnight predictions. The predicted NEEnight values at high temperatures were substantially higher from the exponential-type equations (mean: ~200%) than from the unimodal equation (mean: ~30%), compared to the observed NEEnight . This study calls for using a unimodal equation to predict NEEnight (often considered as nighttime ecosystem respiration, ERnight ), which could substantially improve the accuracy and reduce uncertainty in ER estimates, in particular under the scenario of global warming., (© 2024 John Wiley & Sons Ltd.)- Published
- 2024
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15. In Situ , Fusion-Free, Multiplexed Detection of Small Extracellular Vesicle miRNAs for Cancer Diagnostics.
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Zhou F, Pan L, Ma X, Ye J, Xu Z, Yuan C, Shi C, Yang D, Luo Y, Li M, and Wang P
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- Humans, Female, Male, Biomarkers, Tumor analysis, Neoplasms diagnosis, Neoplasms genetics, Breast Neoplasms diagnosis, Prostatic Neoplasms diagnosis, Extracellular Vesicles chemistry, Extracellular Vesicles metabolism, MicroRNAs analysis
- Abstract
Tumor-derived small extracellular vesicle (sEV) microRNAs (miRNAs) are emerging biomarkers for cancer diagnostics. Conventional sEV miRNA detection methods necessitate the lysis of sEVs, rendering them laborious and time-consuming and potentially leading to damage or loss of miRNAs. Membrane fusion-based in situ detection of sEV miRNAs involves the preparation of probe-loaded vesicles ( e.g. , liposomes or cellular vesicles), which are typically sophisticated and require specialist equipment. Membrane perforation methods employ chemical treatments that can induce severe miRNA degradation or leaks. Inspired by previous studies that loaded nucleic acids into EVs or cells using hydrophobic tethers for therapeutic applications, herein, we repurposed this strategy by conjugating a hydrophobic tether onto molecular beacons to aid their transportation into sEVs, allowing for in situ detection of miRNAs in a fusion-free and multiplexing manner. This method enables simultaneous detection of multiple miRNA species within serum-derived sEVs for the diagnosis of prostate cancer, breast cancer, and gastric cancer with an accuracy of 83.3%, 81.8%, and 100%, respectively, in a cohort of 66 individuals, indicating that it holds a high application potential in clinical diagnostics.
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- 2024
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16. Vigilance against gross hematuria as a rare symptom after TACE for hepatocellular carcinoma.
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Zhang D, Pan L, and Wang G
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- Humans, Male, Middle Aged, Aged, Carcinoma, Hepatocellular therapy, Carcinoma, Hepatocellular complications, Liver Neoplasms therapy, Liver Neoplasms complications, Hematuria etiology, Chemoembolization, Therapeutic adverse effects
- Abstract
Competing Interests: Declaration of competing interest There is no conflict of interest.
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- 2024
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17. Recurrent abdominal pain: Be alert for complications of pelvic ectopic kidney.
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Zhang P, Pan L, and Wang G
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- Humans, Female, Pelvis, Adult, Male, Abdominal Pain etiology, Recurrence, Kidney abnormalities, Choristoma complications
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- 2024
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18. Ommaya Reservoir-Assisted Treatment for Giant Cystic Solid Craniopharyngioma in Children.
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Shao Q, Xiao K, Xu H, Hu F, Pan L, Chen Y, Zhang YM, and Chen L
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- Humans, Male, Child, Craniotomy, Craniopharyngioma surgery, Craniopharyngioma diagnostic imaging, Pituitary Neoplasms surgery, Pituitary Neoplasms diagnostic imaging, Pituitary Neoplasms pathology, Magnetic Resonance Imaging, Drainage
- Abstract
Objective: In children with giant cystic solid craniopharyngioma (CP), the Ommaya reservoir was implanted in the CP cavity, and the cystic fluid was continuously drained for 5 days before the tumor resection., Methods: An 11-year-old male patient was admitted to the hospital due to vision loss for 1 year, intermittent headache, vomiting for 6 months, and frequent urination for 2 months. Besides, magnetic resonance imaging of the head showed cystic solid lesions in the sellar region, suprasellar, and bilateral frontal lobes, with a size of 96.0×82.6×76.0 mm. Before the surgical resection, an Ommaya reservoir was implanted within the tumor cavity. The drainage was continued for 5 days and was 39 to 50 mL (43.80 ± 4.67 mL). Following the tumor shrank, a craniotomy was performed., Results: Following surgical treatment, the CP was entirely removed. The child subsequently developed hypothyroidism and hypocortisolism, for which hormone replacement therapy was administered. No tumor recurrence was observed after 3 years of follow-up., Conclusion: The treatment of giant cystic solid CP in children is challenging. Preoperative implantation of the Ommaya reservoir, continuous drainage of cystic fluid, shrinkage of the tumor, and reduction of tumor tension are beneficial for tumor resection., Competing Interests: The authors report no conflicts of interest., (Copyright © 2024 by Mutaz B. Habal, MD.)
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- 2024
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19. A novel FAK-degrading PROTAC molecule exhibited both anti-tumor activities and efficient MDR reversal effects.
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Xu MS, Gu XF, Li C, Pan LX, Zhu ZX, Fan M, Zhao Y, Chen JF, Liu X, and Zhang XW
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- Animals, Humans, Mice, Cell Line, Tumor, Cell Proliferation drug effects, Protein Kinase Inhibitors pharmacology, Protein Kinase Inhibitors chemistry, Antineoplastic Agents pharmacology, Antineoplastic Agents chemistry, Drug Resistance, Multiple drug effects, Drug Resistance, Neoplasm drug effects, Focal Adhesion Kinase 1 metabolism, Focal Adhesion Kinase 1 antagonists & inhibitors
- Abstract
FAK (focal adhesion kinase) is widely involved in cancer growth and drug resistance development. Thus, FAK inhibition has emerged as an effective strategy for tumor treatment both as a monotherapy or in combination with other treatments. But the current FAK inhibitors mainly concentrate on its kinase activity, overlooking the potential significance of FAK scaffold proteins. In this study we employed the PROTAC technology, and designed a novel PROTAC molecule F2 targeting FAK based on the FAK inhibitor IN10018. F2 exhibited potent inhibitory activities against 4T1, MDA-MB-231, MDA-MB-468 and MDA-MB-435 cells with IC
50 values of 0.73, 1.09, 5.84 and 3.05 μM, respectively. On the other hand, F2 also remarkably reversed the multidrug resistance (MDR) in HCT8/T, A549/T and MCF-7/ADR cells. Both the effects of F2 were stronger than the FAK inhibitor IN10018. To our knowledge, F2 was the first reported FAK-targeted PROTAC molecule exhibiting reversing effects on chemotherapeutic drug resistance, and its highest reversal fold could reach 158 times. The anti-tumor and MDR-reversing effects of F2 might be based on its inhibition on AKT (protein kinase B, PKB) and ERK (extracellular signal-regulated kinase) signaling pathways, as well as its impact on EMT (epithelial-mesenchymal transition). Furthermore, we found that F2 could reduce the protein level of P-gp in HCT8/T cells, thereby contributing to reverse drug resistance from another perspective. Our results will boost confidence in future research focusing on targeting FAK and encourage further investigation of PROTAC with potent in vivo effects., (© 2024. The Author(s), under exclusive licence to Shanghai Institute of Materia Medica, Chinese Academy of Sciences and Chinese Pharmacological Society.)- Published
- 2024
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20. Cyclophilin A promotes porcine deltacoronavirus replication by regulating autophagy via the Ras/AKT/NF-κB pathway.
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Peng Y, Li C, Zhang L, Yu R, Wang Y, Pan L, Guo H, Wei Y, and Liu X
- Subjects
- Animals, Swine, Cell Line, Proto-Oncogene Proteins c-akt metabolism, Proto-Oncogene Proteins c-akt genetics, Proteomics, Coronavirus Infections virology, Coronavirus Infections veterinary, Cyclophilin A genetics, Cyclophilin A metabolism, Virus Replication, Autophagy, NF-kappa B metabolism, Deltacoronavirus genetics, Deltacoronavirus physiology, Signal Transduction, Swine Diseases virology
- Abstract
Porcine deltacoronavirus (PDCoV) is an important enteric coronavirus that has caused major worldwide economic losses in the pig industry. Previous studies have shown that cyclophilin A (CypA), a key player in aetiological agent infection, is involved in regulating viral infection. However, the role of CypA during PDCoV replication remains unknown. Therefore, in this study, the role of CypA in PDCoV replication was determined. The results demonstrated that PDCoV infection increased CypA expression in LLC-PK1 cells. CypA overexpression substantially promoted PDCoV replication. Proteomic analysis was subsequently used to assess changes in total protein expression levels after CypA overexpression. Gene Ontology (GO) functional analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis were used to further determine the mechanisms by which CypA affects viral replication. Proteomic analysis revealed that CypA protein overexpression significantly upregulated 75 differentially expressed proteins and significantly downregulated 172 differentially expressed proteins. The differentially expressed proteins were involved mainly in autophagy and activation of the host innate immune pathway. Subsequent experimental results revealed that the CypA protein promoted viral replication by reducing the levels of natural immune cytokines and mitigated the inhibitory effect of chloroquine (CQ) on viral replication. Further investigation revealed that CypA could activate the Ras/AKT/NF-κB pathway, mediate autophagy signalling and promote PDCoV replication. In summary, the findings of this study may help elucidate the role of CypA in PDCoV replication., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier B.V. All rights reserved.)
- Published
- 2024
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21. Bacillus subtilis JATP3 improved the immunity of weaned piglets by improving intestinal flora and producing citalopram.
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He F, Jin X, E T, Zhao L, Yang W, Zhao Y, Pan L, Bao N, and Sun H
- Subjects
- Animals, Swine, Interleukin-10 metabolism, Interleukin-1beta metabolism, Metabolomics, Intestinal Mucosa metabolism, Intestinal Mucosa immunology, Intestinal Mucosa microbiology, Zonula Occludens-1 Protein metabolism, Dietary Supplements, Gastrointestinal Microbiome drug effects, Bacillus subtilis metabolism, Probiotics administration & dosage, Probiotics pharmacology, Weaning, Ileum microbiology, Ileum immunology, Citalopram pharmacology, Jejunum microbiology, Jejunum immunology, Jejunum metabolism
- Abstract
The purpose of this study was to evaluate the ability of Bacillus subtilis JATP3 to stimulate immune response and improve intestinal health in piglets during the critical weaning period. Twelve 28-day-old weaned piglets were randomly divided into two groups. One group was fed a basal diet, while the other group was fed a basal diet supplemented with B. subtilis JATP3 (1 × 10
9 CFU/mL; 10 mL) for 28 days. The results revealed a significant increase in the intestinal villus gland ratio of weaned piglets following the inclusion of B. subtilis JATP3 (P < 0.05). Inclusion of a probiotic supplement improve the intestinal flora of jejunum and ileum of weaned piglets. Metabolomics analysis demonstrated a notable rise in citalopram levels in the jejunum and ileum, along with elevated levels of isobutyric acid and isocitric acid in the ileum. The results of correlation analysis show that indicated a positive correlation between citalopram and microbial changes. Furthermore, the probiotic-treated group exhibited a significant upregulation in the relative expression of Claudin, Zonula Occludens 1 (ZO-1), and Interleukin 10 (IL-10) in the jejunum and ileum, while displaying a noteworthy reduction in the relative expression of Interleukin 1β (IL-1β). Overall, these findings suggest that B. subtilis JATP3 can safeguard intestinal health by modulating the structure of the intestinal microbiota and their metabolites, wherein citalopram might be a key component contributing to the therapeutic effects of B. subtilis JATP3., Competing Interests: Declaration of competing interest The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Elsevier Ltd. All rights reserved.)- Published
- 2024
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22. Oleanane-type triterpenoids from Sabia limoniacea and their anti-inflammatory activities.
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Huang Y, Hou P, Pan LW, Liang XQ, Ren CY, Peng LT, Gan CQ, Yang RY, Xu WF, Li J, and Zhang YJ
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- Mice, Animals, RAW 264.7 Cells, Molecular Structure, Structure-Activity Relationship, Anti-Inflammatory Agents pharmacology, Anti-Inflammatory Agents chemistry, Anti-Inflammatory Agents isolation & purification, Nitric Oxide antagonists & inhibitors, Nitric Oxide biosynthesis, Nitric Oxide metabolism, Lipopolysaccharides pharmacology, Lipopolysaccharides antagonists & inhibitors, Dose-Response Relationship, Drug, Anti-Inflammatory Agents, Non-Steroidal pharmacology, Anti-Inflammatory Agents, Non-Steroidal chemistry, Anti-Inflammatory Agents, Non-Steroidal isolation & purification, Nitric Oxide Synthase Type II antagonists & inhibitors, Nitric Oxide Synthase Type II metabolism, Cyclooxygenase 2 metabolism, Oleanolic Acid pharmacology, Oleanolic Acid chemistry, Oleanolic Acid isolation & purification, Oleanolic Acid analogs & derivatives
- Abstract
Eighteen new oleanane-type triterpenoids were isolated from the stems of Sabia limoniacea, including sabialimon A (1), a triterpenoid with an unprecedented 6/6/6/7/7 pentacyclic skeleton and seventeen undescribed triterpenoids, sabialimons B-R (2 - 18), along with six previously described analogs (19 - 24). Their structures were fully elucidated via extensive spectroscopic analysis including 1D and 2D NMR, high-resolution electrospray ionization mass spectrometry (HRESIMS), experimental electronic circular dichroism measurements and X-ray crystallographic studies. Compound 1 is the first triterpenoid that possesses a rare ring system (6/6/6/7/7) with an oxygen-bearing bridge between C-17 and C-18 and a hemiketal form at C-17, which is generated a larger ring by the degradation of C-28 and D/E-ring expansion. Biological evaluation revealed that sabialimon I (9), sabialimon K (11), sabialimon P (16) and 11,13(18)-oleanadien-28-hydroxymethyl 3-one (20) exhibited significantly inhibitory activities against nitric oxide (NO) release with IC
50 values of 29.65, 23.41, 18.12 and 26.64 μM, respectively, as compared with the positive control (dexamethasone, IC50 value: 40.35 μM). Furthermore, sabialimon P markedly decreased the secretion of TNF-α, iNOS, IL-6 and NF-κB and inhibited the expression of COX-2 and NF-κB/p65 in LPS-induced RAW264.7 cells in a dose-dependent manner., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Inc. All rights reserved.)- Published
- 2024
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23. Double-network polyphenol chitosan hydrogels with instant aldehyde-β-cyclodextrin-based structure as potential for treating bacterially infected wounds.
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Gao CH, Pan LX, Tan ZJ, Sun HZ, Sun MX, Wang JJ, Shen X, Su F, and Yu RL
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- Animals, Polyphenols chemistry, Polyphenols pharmacology, Drug Liberation, Mice, Staphylococcus aureus drug effects, Aldehydes chemistry, Escherichia coli drug effects, Curcumin chemistry, Curcumin pharmacology, Bandages, Chitosan chemistry, Hydrogels chemistry, Hydrogels pharmacology, beta-Cyclodextrins chemistry, Wound Healing drug effects, Wound Infection drug therapy, Wound Infection microbiology, Anti-Bacterial Agents pharmacology, Anti-Bacterial Agents chemistry
- Abstract
Treatment of multiple bacterial infected wounds by eliminating bacteria and promoting tissue regeneration remains a clinical challenge. Herein, dual-network hydrogels (CS-GA/A-β-CD) with snap-structure were designed to achieve curcumin immobilization, using gallic acid-grafted chitosan (CS-GA) and aldehyde-β-cyclodextrin (A-β-CD) crosslinked. A-β-CD were able to achieve rapid dissolution (≥222.35 mg/mL H
2 O), and helped CS-GA/A-β-CD achieve rapid gelation (≤66.23 s). By adjusting the ratio of aldehyde groups of A-β-CD, mechanical properties and drug release can be controlled. CS-GA/A-β-CD/Cur exhibited excellent antimicrobial properties against S. aureus, E. coli, and P. aeruginosa. In vivo experiments demonstrated that CS-GA/A-β-CD/Cur achieved acute bacterial infection wound healing after 20th days, proving its great potential for wound dressing., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier B.V. All rights reserved.)- Published
- 2024
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24. Gut microbiome and serum metabolome as a biomarkers of clinical severity and prognosis in patients with traumatic brain injury.
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Pan L, Xie L, Ma Q, Liu B, Cheng H, and Mao X
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- 2024
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25. Cotton leaf curl Multan virus subverts the processing of hydroxyproline-rich systemin to suppress tobacco defenses against insect vectors.
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Chen N, Zou C, Pan LL, Du H, Yang JJ, Liu SS, and Wang XW
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- Animals, Plant Proteins metabolism, Plant Proteins genetics, Hemiptera virology, Hemiptera physiology, Nicotiana virology, Begomovirus physiology, Insect Vectors virology, Insect Vectors physiology, Plant Diseases virology
- Abstract
Insect vector-virus-plant interactions have important ecological and evolutionary implications. The constant struggle of plants against viruses and insect vectors has driven the evolution of multiple defense strategies in the host as well as counter-defense strategies in the viruses and insect vectors. Cotton leaf curl Multan virus (CLCuMuV) is a major causal agent of cotton leaf curl disease in Asia and is exclusively transmitted by the whitefly Bemisia tabaci. Here, we report that plants infected with CLCuMuV and its betasatellite CLCuMuB enhance the performance of the B. tabaci vector, and βC1 encoded by CLCuMuB plays an important role in begomovirus-whitefly-tobacco tripartite interactions. We showed that CLCuMuB βC1 suppresses the jasmonic acid signaling pathway by interacting with the subtilisin-like protease 1.7 (NtSBT1.7) protein, thereby enhancing whitefly performance on tobacco plants. Further studies revealed that in wild-type plants, NtSBT1.7 could process tobacco preprohydroxyproline-rich systemin B (NtpreproHypSysB). After CLCuMuB infection, CLCuMuB βC1 could interfere with the processing of NtpreproHypSysB by NtSBT1.7, thereby impairing plant defenses against whitefly. These results contribute to our understanding of tripartite interactions among virus, plant, and whitefly, thus offering ecological insights into the spread of vector insect populations and the prevalence of viral diseases., (© The Author(s) 2024. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For commercial re-use, please contact reprints@oup.com for reprints and translation rights for reprints. All other permissions can be obtained through our RightsLink service via the Permissions link on the article page on our site—for further information please contact journals.permissions@oup.com.)
- Published
- 2024
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26. Informing the Need for a SARS-CoV-2 Booster Based on the Immune Responses Among Young Healthy Adults to Variants Circulating in Late 2023.
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Nguyen HC, Lal KG, Balinsky CA, Hontz RD, Lin J, Beye MJ, Smith L, Pan L, Cheng Y, Fox I, Lizewski SE, Foo HS, Krebs SJ, Sun P, and Letizia AG
- Subjects
- Humans, Cross-Sectional Studies, Male, Adult, Female, Young Adult, Military Personnel, Memory B Cells immunology, Adaptive Immunity immunology, SARS-CoV-2 immunology, COVID-19 immunology, COVID-19 prevention & control, Antibodies, Viral blood, Antibodies, Viral immunology, COVID-19 Vaccines immunology, COVID-19 Vaccines administration & dosage, Antibodies, Neutralizing blood, Antibodies, Neutralizing immunology, Immunization, Secondary, CD8-Positive T-Lymphocytes immunology
- Abstract
Background: COVID-19 remains a global public health challenge due to new immune-evasive SARS-CoV-2 variants and heterogeneous immunity., Methods: In this cross-sectional study, we evaluated the adaptive immune responses in US active duty personnel who completed a COVID-19 primary vaccine series and had heterogenous SARS-CoV-2 vaccination and infection histories to 3 previously dominant variants (ancestral, Delta, BA.5) and 3 circulating variants (XBB.1.5, EG.5, and BA.2.86) in late 2023. Analyses were based on the most recent exposure in terms of timing (within or beyond 12 months) and type (vaccine or infection)., Results: Significant reduction was observed in binding antibodies, neutralization antibodies, memory B cells, and CD8+ T cells against circulating variants when compared with previous variants. The reduction in antibody response was more pronounced in those whose most recent exposure was >12 months from enrollment. In contrast, the CD4+ T-cell response was largely consistent across all tested variants. The type of most recent exposure was not a significant factor in determining the magnitude of current immune responses., Conclusions: Administration of the XBB.1.5-based booster is likely to enhance cross-reactive humoral responses against SARS-CoV-2 circulating lineages. Ongoing surveillance of immune responses to emerging variants is needed for informing vaccine composition and timing., Competing Interests: Potential conflicts of interest. All authors: No reported conflicts. All authors have submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest., (Published by Oxford University Press on behalf of Infectious Diseases Society of America 2024.)
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- 2024
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27. Unveiling intraspecific diversity and evolutionary dynamics of the foodborne pathogen Bacillus paranthraci s through high-quality pan-genome analysis.
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Du Y, Qian C, Li X, Zheng X, Huang S, Yin Z, Chen T, and Pan L
- Abstract
Understanding the evolutionary dynamics of foodborne pathogens throughout host-associated habitats is of utmost importance. Bacterial pan-genomes, as dynamic entities, are strongly influenced by ecological lifestyles. As a phenotypically diverse species in the Bacillus cereus group, Bacillus paranthracis is recognized as an emerging foodborne pathogen and a probiotic simultaneously. This poorly understood species is a suitable study model for adaptive pan-genome evolution. In this study, we determined the biogeographic distribution, abundance, genetic diversity, and genotypic profiles of key genetic elements of B. paranthracis . Metagenomic read recruitment analyses demonstrated that B. paranthracis members are globally distributed and abundant in host-associated habitats. A high-quality pan-genome of B. paranthracis was subsequently constructed to analyze the evolutionary dynamics involved in ecological adaptation comprehensively. The open pan-genome indicated a flexible gene repertoire with extensive genetic diversity. Significant divergences in the phylogenetic relationships, functional enrichment, and degree of selective pressure between the different components demonstrated different evolutionary dynamics between the core and accessory genomes driven by ecological forces. Purifying selection and gene loss are the main signatures of evolutionary dynamics in B. paranthracis pan-genome. The plasticity of the accessory genome is characterized by horizontal gene transfer (HGT), massive gene losses, and weak purifying or positive selection, which might contribute to niche-specific adaptation. In contrast, although the core genome dominantly undergoes purifying selection, its association with HGT and positively selected mutations indicates its potential role in ecological diversification. Furthermore, host fitness-related dynamics are characterized by the loss of secondary metabolite biosynthesis gene clusters (BGCs) and CAZyme-encoding genes and the acquisition of antimicrobial resistance (AMR) and virulence genes via HGT. This study offers a case study of pan-genome evolution to investigate the ecological adaptations reflected by biogeographical characteristics, thereby advancing the understanding of intraspecific diversity and evolutionary dynamics of foodborne pathogens., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Authors. Published by Elsevier B.V.)
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- 2024
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28. lncSNHG16 promotes hepatocellular carcinoma development by inhibiting autophagy.
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Deng ZJ, Liu HT, Yuan BH, Pan LX, Teng YX, Su JY, Luo CP, Guo PP, and Zhong JH
- Abstract
Objective: To investigate the expression of long non-coding RNA lncSNHG16 in hepatocellular carcinoma (HCC), associations between its expression and patient survival, and its potential role in regulating autophagy in the disease., Methods: Expression of lncSNHG16 was measured using quantitative real-time PCR in HCC cells in culture and HCC tissues from patients. Effects of lncSNHG16 overexpression were examined in HCC cultures using assays of cell proliferation, wound healing, and migration or invasion in Transwell dishes. Effects of lncSNHG16 overexpression were also examined in subcutaneous tumor in mice. Relationships of lncSNHG16 expression to autophagy and apoptosis in HCC cultures were explored using western blotting and flow cytometry., Results: Higher lncSNHG16 expression in HCC tissues was associated with significantly worse overall and recurrence-free survival of patients. Overexpressing lncSNHG16 in HCC cell culture promoted cell proliferation, migration, and invasion while suppressing apoptosis. lncSNHG16 was associated with upregulation of STAT3 as well as inhibition of autophagy and associated apoptosis. Overexpressing lncSNHG16 accelerated tumor growth and weight in mice., Conclusion: The non-coding RNA lncSNHG16 suppresses autophagy and associated apoptosis in HCC, making it a potential therapeutic target., (© 2024. The Author(s), under exclusive licence to Federación de Sociedades Españolas de Oncología (FESEO).)
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- 2024
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29. Bioinformatics and experimental validation were combined to explore lactylation-related biomarkers in HBV-associated acute liver failure.
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Pei H, Chen YQ, Wu FL, Zhang YY, Zhang X, Li JY, Pan LY, Chen Y, and Huang YW
- Abstract
Background and Aim: Currently, hepatitis B virus-related acute liver failure (HBV-ALF) has limited treatment options. Studies have shown that histone lactylation plays a role in the progression of liver-related diseases. Therefore, it is essential to explore lactylation-related gene (LRGs) biomarkers in HBV-ALF to provide new information for the treatment of HBV-ALF., Methods: Two HBV-ALF-related datasets (GSE38941 and GSE14668) and 65 LRGs were used. First, the differentially expressed genes (DEGs) were derived from differential expression analysis, the key module genes from weighted gene co-expression network analysis; and LRGs were used to intersect to obtain the candidate genes. Subsequently, the feature genes obtained from least absolute shrinkage and selection operator regression analysis and support vector machine analysis were intersected to obtain the candidate key genes. Among them, genes with consistent and significant expression trends in both GSE38941 and GSE14668 were used as biomarkers. Subsequently, biomarkers were analyzed for functional enrichment, immune infiltration, and sensitive drug prediction., Results: In this study, five candidate genes (PIGM, PIGA, EGR1, PIGK, and PIGL) were identified by intersecting 6461 DEGs and 2496 key module genes with 65 LRGs. We then screened four candidate key genes from the machine learning algorithm, among which PIGM and PIGA were considered biomarkers in HBV-ALF. Moreover, the results of enrichment analysis showed that the significant enrichment signaling pathways for biomarkers included allograft rejection and valine, leucine, and isoleucine degradation. Thereafter, 11 immune cells differed significantly between groups, with resting memory CD4+ T cells having the strongest positive correlation with biomarkers. Methylphenidate hydrochloride is a potential therapeutic drug for PIGM., Conclusion: Two genes, PIGM and PIGA, were identified as biomarkers related to LRGs in HBV-ALF, providing a basis for understanding HBV-ALF pathogenesis., (© 2024 Journal of Gastroenterology and Hepatology Foundation and John Wiley & Sons Australia, Ltd.)
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- 2024
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30. Heritability and genetic correlations of obesity indices and cardiometabolic traits in the Northern Chinese families.
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Lin B, Pan L, He H, Hu Y, Tu J, Zhang L, Cui Z, Ren X, Wang X, Nai J, and Shan G
- Abstract
Objective: This study aimed to investigate the heritability of various obesity indices and their shared genetic factors with cardiometabolic traits in the Chinese nuclear family., Methods: A total of 1270 individuals from 538 nuclear families were included in this cross-sectional study. Different indices were used to quantify fat mass and distribution, including body index mass (BMI), visceral fat index (VFI), and body fat percent (BFP). Heritability and genetic correlations for all quantitative traits were estimated using variance component models. The susceptibility-threshold model was utilized to estimate the heritability for binary traits., Results: Heritability estimates for obesity indices were highest for BMI (59%), followed by BFP (49%), and VFI (40%). Heritability estimates for continuous cardiometabolic traits varied from 24% to 50%. All obesity measures exhibited consistently significant positive genetic correlations with blood pressure, fasting blood glucose, and uric acid (r
G range: 0.26-0.57). However, diverse genetic correlations between various obesity indices and lipid profiles were observed. Significant genetic correlations were limited to specific pairs: BFP and total cholesterol (rG = 0.24), BFP and low-density lipoprotein cholesterol (rG = 0.25), and VFI and triglyceride (rG = 0.33)., Conclusion: The genetic overlap between various obesity indices and cardiometabolic traits underscores the importance of pleiotropic genes. Further studies are warranted to investigate specific shared genetic and environmental factors between obesity and cardiometabolic diseases., (© 2024 University College London (UCL) and John Wiley & Sons Ltd.)- Published
- 2024
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31. Gastroretentive Raft Forming System for Enhancing Therapeutic Effect of Drug-Loaded Hollow Mesoporous Silica on Gastric Ulcers.
- Author
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Chen H, Pan L, Zhang C, Liu L, Tu B, Liu E, and Huang Y
- Subjects
- Animals, Male, Mice, Ethanol chemistry, Drug Liberation, Porosity, Drug Delivery Systems methods, Drug Carriers chemistry, Pyroptosis drug effects, Anti-Inflammatory Agents, Non-Steroidal chemistry, Anti-Inflammatory Agents, Non-Steroidal pharmacology, Stomach Ulcer drug therapy, Silicon Dioxide chemistry, Gastric Mucosa drug effects, Gastric Mucosa metabolism, Gastric Mucosa pathology, Nanoparticles chemistry
- Abstract
Gastric ulcers are characterized by damage to the stomach lining and are often triggered by substances such as ethanol and non-steroidal anti-inflammatory drugs. Patchouli alcohol (PA) has demonstrated effectiveness in treating gastric ulcers through antioxidative and anti-inflammatory effects. However, the water insolubility of PA and rapid gastric emptying cause low drug concentration and poor absorption in the stomach, resulting in limited treatment efficacy of PA. This study develops an oral gastroretentive raft forming system (GRFDDS) containing the aminated hollow mesoporous silica nanoparticles (NH
2 -HMSN) for PA delivery. The application of NH2 -HMSN can enhance PA-loading capacity and water dispersibility, promoting bio-adhesion to the gastric mucosa and sustained drug release. The incorporation of PA-loaded NH2 -HMSN (NH2 -HMSN-PA) into GRFDDS can facilitate gastric drug retention and achieve long action, thereby improving therapeutic effects. The results reveal that NH2 -HMSN-PA protects the gastric mucosa damage by inhibiting NLRP3-mediated pyroptosis. The GRFDDS, optimized through orthogonal design, demonstrates the gastric retention capacity and sustained drug release, exhibiting significant therapy efficacy in an ethanol-induced acute gastric ulcers model and an aspirin-induced chronic gastric ulcers model through antioxidation, anti-pyroptosis, and anti-inflammation. This study provides a potential strategy for enhancing druggability of insoluble natural compounds and therapeutic management of gastric ulcers., (© 2024 Wiley‐VCH GmbH.)- Published
- 2024
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32. Symptomatic Meckel's diverticulum: Another cause of lower gastrointestinal bleeding in adults.
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Pan L, Zhang P, and Wang G
- Subjects
- Humans, Male, Adult, Meckel Diverticulum complications, Meckel Diverticulum surgery, Meckel Diverticulum diagnostic imaging, Gastrointestinal Hemorrhage etiology, Gastrointestinal Hemorrhage surgery
- Published
- 2024
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33. Salivary Testosterone Levels and Pain Perception Exhibit Sex-Specific Association in Healthy Adults But Not in Patients With Migraine.
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Pan LH, Chen SP, Ling YH, Wang YF, Lai KL, Liu HY, Chen WT, Huang WJ, Coppola G, Treede RD, and Wang SJ
- Subjects
- Humans, Male, Female, Adult, Young Adult, Pain Measurement, Migraine Disorders metabolism, Migraine Disorders physiopathology, Testosterone metabolism, Saliva chemistry, Saliva metabolism, Pain Perception physiology, Sex Characteristics, Pain Threshold physiology
- Abstract
This study investigated the sex-specific associations between pain perception and testosterone levels in healthy controls (HCs) and patients with migraine. Male and female HCs and migraine patients were recruited. A series of questionnaires were completed by the participants to evaluate their psychosocial profiles, which included data on mood, stress, and sleep quality. Heat pain thresholds and suprathreshold pain ratings at 45 °C (referred to as the pain perception score [PPS]) were assessed using the Thermode system. Salivary testosterone levels were analyzed using a commercial enzyme-linked immunosorbent assay kit. A total of 88 HCs (men/women: 41/47, age: 29.9 ± 7.7 years) and 75 migraine patients (men/women: 30/45, age: 31.1 ± 7.7 years) completed all assessments. No significant differences were observed in either the psychosocial profiles or heat pain thresholds and PPSs between the sexes in the control and migraine groups. A positive correlation between testosterone levels and PPSs was identified in the male controls (r = .341, P = .029), whereas a negative correlation was identified in the female controls (r = -.407, P = .005). No such correlations were identified in the migraine group. This study confirms that a negative association is present between PPSs and testosterone levels in female controls, which is in line with the findings that testosterone is associated with reduced pain perception. Our study is the first to demonstrate a sex-specific association between PPSs and testosterone levels in HCs. Moreover, this study also revealed that the presence of migraine appears to disrupt this association. PERSPECTIVE: This study revealed that testosterone levels demonstrate opposite associations with pain perception in healthy men and women. However, the presence of migraine appears to disrupt this sex-specific association., (Copyright © 2024 United States Association for the Study of Pain, Inc. Published by Elsevier Inc. All rights reserved.)
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- 2024
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34. A 700 nm LED Light Activated Ru(II) Complex Destroys Tumor Cytoskeleton via Photosensitization and Photocatalysis.
- Author
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Dao A, Chen S, Pan L, Ren Q, Wang X, Wu H, Gong Q, Chen Z, Ji S, Ru J, Zhu H, Liang C, Zhang P, Xia H, and Huang H
- Subjects
- Animals, Cell Line, Tumor, Mice, Cytoskeleton metabolism, Cytoskeleton drug effects, Humans, Coordination Complexes chemistry, Coordination Complexes pharmacology, Catalysis, Mice, Inbred BALB C, Photochemotherapy methods, Antineoplastic Agents chemistry, Antineoplastic Agents pharmacology, Female, Light, Infrared Rays, Endoplasmic Reticulum Stress drug effects, Neoplasms pathology, Neoplasms drug therapy, Neoplasms metabolism, Ruthenium chemistry, Ruthenium pharmacology, Photosensitizing Agents chemistry, Photosensitizing Agents pharmacology
- Abstract
Photoactivable chemotherapy (PACT) using metallic complexes provides spatiotemporal selectivity over drug activation for targeted anticancer therapy. However, the poor absorption in near-infrared (NIR) light region of most metallic complexes renders tissue penetration challenging. Herein, an NIR light triggered dinuclear photoactivable Ru(II) complex (Ru2) is presented and the antitumor mechanism is comprehensively investigated. The introduction of a donor-acceptor-donor (D-A-D) linker greatly enhances the intramolecular charge transition, resulting in a high molar extinction coefficient in the NIR region with an extended triplet excited state lifetime. Most importantly, when activated by 700 nm NIR light, Ru2 exhibits unique slow photodissociation kinetics that facilitates synergistic photosensitization and photocatalytic activity to destroy diverse intracellular biomolecules. In vitro and in vivo experiments show that when activated by 700 nm NIR light, Ru2 exhibits nanomolar photocytotoxicity toward 4T1 cancer cells via the induction of calcium overload and endoplasmic reticulum (ER) stress. These findings provide a robust foundation for the development of NIR-activated Ru(II) PACT complexes for phototherapeutic application., (© 2024 Wiley‐VCH GmbH.)
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- 2024
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35. A new strategy for the treatment of painful diabetic peripheral neuropathy.
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Wang G, Zeng X, and Pan L
- Subjects
- Humans, Pain Management methods, Diabetic Neuropathies therapy
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- 2024
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36. Non-target lesion progression: Unveiling critical predictors and outcomes in patients with in-stent restenosis.
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Zhang W, Zhang W, Deng Y, Gu N, Qiu Z, Deng C, Yang S, Pan L, Long S, Wang Y, Zhao Y, and Shi B
- Subjects
- Humans, Male, Female, Middle Aged, Aged, Treatment Outcome, Follow-Up Studies, Predictive Value of Tests, Retrospective Studies, Coronary Angiography, Coronary Artery Disease surgery, Coronary Artery Disease diagnostic imaging, Coronary Restenosis diagnostic imaging, Coronary Restenosis etiology, Coronary Restenosis epidemiology, Disease Progression, Tomography, Optical Coherence methods, Percutaneous Coronary Intervention methods, Percutaneous Coronary Intervention instrumentation, Percutaneous Coronary Intervention adverse effects, Drug-Eluting Stents adverse effects
- Abstract
Background: Percutaneous coronary intervention (PCI) has become the primary treatment for coronary artery disease. However, while PCI effectively addresses severe stenosis or occlusive lesions in target vessels, the progression of non-target vessel plaque remains a critical determinant of long-term patient prognosis., Aims: The purpose of this study was to investigate the impact of non-target vascular plaque progression on prognosis after PCI for ISR., Methods: This study included 195 patients diagnosed with ISR and multivessel disease who underwent successful PCI with drug-eluting stent (DES) placement, along with intraoperative optical coherence tomography (OCT) assessment of the culprit stent. Subsequent rechecked coronary angiography categorized eligible patients into non-target lesion progression (N-TLP) and no-N-TLP groups. We evaluated the baseline morphological characteristics of N-TLP by OCT and investigated the relationship between N-TLP, non-culprit vessel-related major adverse cardiovascular events (NCV-MACE), and pan-vascular disease-related clinical events (PVD-CE) incidence., Results: Multivariate logistic regression analysis revealed that diabetes mellitus (OR 3.616, 95% CI: 1.735-7.537; P = 0.001), uric acid level (OR 1.005, 95% CI: 1.001-1.009; P = 0.006), in-stent neoatherosclerosis (ISNA) (OR 1.334, 95% CI: 1.114-1.985; P = 0.047) and heterogeneous neointima morphology (OR 2.48, 95% CI: 1.18-5.43; P = 0.019) were independent predictors for N-TLP. Furthermore, N-TLP was associated with a high incidence of NCV-MACE (19.4% vs 6.9%, P = 0.009) and PVD-CE (83.9% [95% CI: 79.7%-88.3%] vs 93.1% [95% CI: 88.4%-98.0%], P = 0.038) after PCI in ISR patients., Conclusion: Diabetes, uric acid levels, ISNA, and heterogeneous neointima are predictive factors for subsequent rapid plaque progression, with N-TLP exacerbating the incidence of NCV-MACE and PVD-CE after PCI., Competing Interests: Declaration of competing interest The authors have declared that no competing interest exists., (Copyright © 2024. Published by Elsevier B.V.)
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- 2024
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37. The effect of chemical doping on the lithiation processes of the crystalline Si anode ‒ A first-principles study.
- Author
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Chiang HH, Pan LY, and Kuo CL
- Abstract
We employed first-principles calculations to investigate the effect of chemical doping on the lithiation kinetics and dynamic properties of the c-Si anode. Our ab initio molecular dynamics simulations reveal that phosphorous/arsenic doping can greatly enhance the lithiation kinetics of c-Si, whereas boron doping is unable to produce such an improvement. Our calculations also show that boron doping could enhance Li insertion into c-Si, but phosphorous/arsenic doping tends to increase the insertion energy of Li ions. Although the migration energy barriers of Li ions may slightly increase (decrease) in the boron-(phosphorus-/arsenic-)doped c-Si, these changes were only effective within the range of the nearest-neighbor distance from dopants. Furthermore, it was found that the phosphorus-/arsenic-doped Si can be more ductile and can more easily undergo plastic deformation upon lithiation, while the c-Si matrix becomes more brittle and stiffer when doped with boron. Our simulation results also demonstrate that phosphorous- and arsenic-doping can effectively speed up the Li-induced structural amorphization of c-Si while boron doping appears to severely slow it down. These findings unambiguously indicate that the induced mechanical softening of the c-Si bond network can be the primary factor that leads to the enhanced lithiation kinetics in the n-type doped c-Si anodes., (© 2024 Author(s). Published under an exclusive license by AIP Publishing.)
- Published
- 2024
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38. A novel strategy for treating osteoarthritis.
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Zhang D, Pan L, and Wang G
- Abstract
Competing Interests: Declaration of competing interest There is no conflict of interest.
- Published
- 2024
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39. Molecular Mechanism of PP2A/B55α Phosphatase Inhibition by IER5.
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Cao R, Jones DT, Pan L, Yang A, Wang S, Padi SKR, Rawson S, Aster JC, and Blacklow SC
- Abstract
PP2A serine/threonine phosphatases are heterotrimeric complexes that execute many essential physiologic functions. These activities are modulated by additional regulatory proteins, such as ARPP19, FAM122A, and IER5. Here, we report the cryoelectron microscopy structure of a complex of PP2A/B55α with the N-terminal structured region of IER5 (IER5-N50), which occludes a surface on B55α used for substrate recruitment, and show that IER5-N50 inhibits PP2A/B55α catalyzed dephosphorylation of pTau in biochemical assays. Mutations of full-length IER5 that disrupt its PP2A/B55α interface interfere with co-immunoprecipitation of PP2A/B55α. These mutations and deletions that remove the nuclear localization sequence of IER5 suppress cellular events such as KRT1 expression that depend on association of IER5 with PP2A/B55α. Querying the Alphafold2 predicted structure database identified SERTA domain proteins as high-confidence PP2A/B55α-binding structural homologs of IER5-N50. These studies define the molecular basis of PP2A/B55α inhibition by IER5-family proteins and suggest a roadmap for selective pharmacologic modulation of PP2A/B55α complexes., Competing Interests: SCB is on the board of directors of the non-profit Institute for Protein Innovation and the Revson Foundation, is on the scientific advisory board for and receives funding from Erasca, Inc. for an unrelated project, is an advisor to MPM Capital, and is a consultant for IFM, Scorpion Therapeutics, Odyssey Therapeutics, Droia Ventures, and Ayala Pharmaceuticals for unrelated projects. JCA is a consultant for Ayala Pharmaceuticals, Cellestia, Inc., SpringWorks Therapeutics, and Remix Therapeutics. The other authors declare that they have no competing interests.
- Published
- 2024
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40. Unveiling a rare BRAF mutation in minimally invasive follicular thyroid carcinoma: A case report.
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Lee PS, Chen JY, Pan LH, Hwu CM, Hang JF, and Kuo CS
- Subjects
- Humans, Female, Middle Aged, Mutation, Thyroid Cancer, Papillary genetics, Thyroid Cancer, Papillary pathology, Thyroid Cancer, Papillary surgery, Thyroid Cancer, Papillary diagnosis, Proto-Oncogene Proteins B-raf genetics, Thyroid Neoplasms genetics, Thyroid Neoplasms pathology, Thyroid Neoplasms surgery, Adenocarcinoma, Follicular genetics, Adenocarcinoma, Follicular pathology, Adenocarcinoma, Follicular surgery, Adenocarcinoma, Follicular diagnosis, Thyroidectomy methods
- Abstract
Rationale: Molecular testing is becoming more widely used; however, the accuracy of diagnostic testing remains a primary consideration, especially for molecular testing that detects specific mutations associated with cancers., Patient Concerns: A 45-year-old female without documented comorbidities presented a thyroid nodule during a routine health examination. Initial evaluation revealed a 3.8-cm nodule in the left lobe of thyroid, classified as Bethesda System category III on fine needle aspiration cytology. Genetic molecular testing detected the BRAF V600E mutation via quantitative polymerase chain reaction assay, raising concern for papillary thyroid cancer (PTC)., Diagnoses: The preoperative impression was PTC based on the detection of BRAF V600E mutation., Interventions: The patient underwent thyroidectomy as well as lymph node dissection with the expectation to treat PTC., Outcomes: The final pathology unexpectedly revealed minimally invasive follicular carcinoma. Confirmatory Sanger sequencing unveiled a novel sequence variation involving nucleotide duplication within the range of 1794 to 1802, a non-V600E BRAF mutation not previously reported in follicular thyroid carcinoma., Lessons: This case study demonstrates the clinical relevance of exercising caution in molecular testing and its interpretation of results. For genetic testing used for diagnostic purposes, rigorous validation or cross-checking using different methods should always be considered to ensure appropriate interpretation of molecular results., Competing Interests: The authors declare that there are no conflicts of interest associated with the research., (Copyright © 2024 the Author(s). Published by Wolters Kluwer Health, Inc.)
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- 2024
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41. A genome-wide association study identifies novel loci of vertigo in an Asian population-based cohort.
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Chen SP, Hsu CL, Chen TH, Pan LH, Wang YF, Ling YH, Chang HC, Chen YM, Fann CS, and Wang SJ
- Subjects
- Humans, Male, Female, Middle Aged, Cohort Studies, Adult, Genetic Loci, Aged, Genome-Wide Association Study, Vertigo genetics, Polymorphism, Single Nucleotide, Asian People genetics, Genetic Predisposition to Disease
- Abstract
The contributing genetic factors of vertigo remain poorly characterized, particularly in individuals of non-European ancestries. Here we show the genetic landscape of vertigo in an Asian population-based cohort. In a two-stage genome-wide association study (N
case = 6199; Ncontrol = 54,587), we identify vertigo-associated genomic loci in DROSHA and ZNF91/LINC01224, with the latter replicating the findings in European ancestries. Gene-based association testing corroborates these findings. Interestingly, both genes are enriched in cerebellum, a key structure receiving sensory input from the vestibular system. Subjects carrying risk alleles from lead SNPs of DROSHA and ZNF91 incur a 1.74-fold risk of vertigo than those without. Moreover, composite clinical-polygenic risk scores allow differentiation between patients and controls, yielding an area under receiver operating characteristic curve of 0.69. This study identified novel genomic loci for vertigo in an Asian population-based cohort, which may help identifying high risk subjects and provide mechanistic insight in understanding the pathogenesis of vertigo., (© 2024. The Author(s).)- Published
- 2024
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42. Intestinal GSTpi deficiency exacerbates the severity of experimental hyperlipidemic acute pancreatitis.
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Yang J, Wu B, Sha X, Lu H, Pan LL, Gu Y, and Dong X
- Subjects
- Animals, Humans, Mice, Male, Disease Models, Animal, NLR Family, Pyrin Domain-Containing 3 Protein metabolism, NLR Family, Pyrin Domain-Containing 3 Protein genetics, Severity of Illness Index, Inflammasomes metabolism, Intestinal Mucosa pathology, Intestinal Mucosa metabolism, Intestinal Mucosa immunology, Intestines pathology, Mice, Knockout, Female, Colon pathology, Pancreas pathology, Pancreatitis pathology, Hyperlipidemias, Mice, Inbred C57BL
- Abstract
Intestinal dysfunction plays a pivotal role in the development of acute pancreatitis (AP), however, the underlying mechanisms of intestinal dysfunction on severity of hyperlipidemic acute pancreatitis (HLAP) are still unclear. Herein, we explored the role of intestinal function on the severity of HLAP. We found that HLAP patients exhibit higher lipid and inflammatory response than AP patients. Hyperlipidemia significantly elevates serum lipids and worsen pancreatic damage in AP mice. In addition, significant exacerbated intestinal barrier damage and inflammation were observed in experimental HLAP mice, as evidenced by increased serum amylase and lipase levels, and pancreatic edema. Further, RNA-Seq showed that a markedly decrease of glutathione S-transferase pi (GSTpi) in colonic tissue of HLAP mice compared with AP mice, accompanied with increased serum lipopolysaccharides level. However, colonic GSTpi overexpression by adeno-associated virus significantly attenuated intestinal damage and subsequent pancreatic inflammation in HLAP mice. Mechanistically, GSTpi mitigated HLAP-mediated colonic NLRP3 inflammasome activation and barrier dysfunction. These results suggest that intestinal GSTpi deficiency exacerbates the severity of experimental HLAP, providing new insights for the clinical treatment of HLAP., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier B.V. All rights reserved.)
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- 2024
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43. Serial cell culture passaging in vitro led to complete attenuation and changes in the characteristic features of a virulent porcine deltacoronavirus strain.
- Author
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Zhang L, Yu R, Wang L, Zhang Z, Lu Y, Zhou P, Wang Y, Guo H, Pan L, and Liu X
- Subjects
- Animals, Swine, Virulence, Viral Vaccines immunology, Spike Glycoprotein, Coronavirus genetics, Spike Glycoprotein, Coronavirus metabolism, Cell Line, Mutation, Deltacoronavirus genetics, Deltacoronavirus pathogenicity, Vaccines, Attenuated immunology, Serial Passage, Coronavirus Infections virology, Coronavirus Infections veterinary, Swine Diseases virology, Genome, Viral
- Abstract
Porcine deltacoronavirus (PDCoV) is an important enteric coronavirus that has caused enormous economic losses in the pig industry worldwide. However, no commercial vaccine is currently available. Therefore, developing a safe and efficacious live-attenuated vaccine candidate is urgently needed. In this study, the PDCoV strain CH/XJYN/2016 was continuously passaged in LLC-PK cells until passage 240, and the virus growth kinetics in cell culture, pathogenicity in neonatal piglets, transcriptome differences after LLC-PK infection, changes in the functional characteristics of the spike (S) protein in the high- and low-passage strains, genetic variation of the virus genome, resistance to pepsin and acid, and protective effects of this strain when used as a live-attenuated vaccine were examined. The results of animal experiments demonstrated that the virulent PDCoV strain CH/XJYN/2016 was completely attenuated and not pathogenic in piglets following serial cell passage. Genome sequence analysis showed that amino acid mutations in nonstructural proteins were mainly concentrated in Nsp3, structural protein mutations were mainly concentrated in the S protein, and the N, M, and E genes were conserved. Transcriptome comparison revealed that compared with negative control cells, P10-infected LLC-PK cells had the most differentially expressed genes (DEGs), while P0 and P240 had the least number of DEGs. Analysis of trypsin dependence and related structural differences revealed that the P10 S protein interacted more strongly with trypsin and that the P120 S protein interacted more strongly with the APN receptor. Moreover, the infectivity of P240 was not affected by pepsin but was significantly decreased after exposure to low pH. Furthermore, the P240-based live-attenuated vaccine provided complete protection to piglets against the challenge of virulent PDCoV. In conclusion, we showed that a PDCoV strain was completely attenuated through serial passaging in vitro . These results provide insights into the potential molecular mechanisms of PDCoV attenuation and the development of a promising live-attenuated PDCoV vaccine.IMPORTANCEPorcine deltacoronavirus (PDCoV) is one of the most important enteropathogenic pathogens that cause diarrhea in pigs of various ages, especially in suckling piglets, and causes enormous economic losses in the global commercial pork industry. There are currently no effective measures to prevent and control PDCoV. As reported in previous porcine epidemic diarrhea virus (PEDV) and transmissible gastroenteritis virus studies, inactivated vaccines usually elicit less robust protective immune responses than live-attenuated vaccines in native sows. Therefore, identifying potential attenuation mechanisms, gene evolution, pathogenicity differences during PDCoV passaging, and immunogenicity as live-attenuated vaccines is important for elucidating the mechanism of attenuation and developing safe and effective vaccines for virulent PDCoV strains. In this study, we demonstrated that the virulence of the PDCoV strain CH/XJYN/2016 was completely attenuated following serial cell passaging in vitro , and changes in the biological characteristics and protection efficacy of the strain were evaluated. Our results help elucidate the mechanism of PDCoV attenuation and support the development of appropriate designs for the study of live PDCoV vaccines., Competing Interests: The authors declare no conflict of interest.
- Published
- 2024
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44. Gypenoside inhibits gastric cancer proliferation by suppressing glycolysis via the Hippo pathway.
- Author
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Pan L, Lan B, Li S, Jin Y, Cui M, Xia Y, Wei S, and Huang H
- Subjects
- Humans, Cell Line, Tumor, Animals, Signal Transduction drug effects, Mice, Cell Movement drug effects, Plant Extracts pharmacology, Mice, Nude, Xenograft Model Antitumor Assays, Gene Expression Regulation, Neoplastic drug effects, Stomach Neoplasms metabolism, Stomach Neoplasms drug therapy, Stomach Neoplasms pathology, Stomach Neoplasms genetics, Cell Proliferation drug effects, Glycolysis drug effects, Gynostemma, Protein Serine-Threonine Kinases metabolism, Protein Serine-Threonine Kinases genetics, Hippo Signaling Pathway
- Abstract
Gastric cancer (GC) remains a global disease with a high mortality rate, the lack of effective treatments and the high toxicity of side effects are primary causes for its poor prognosis. Hence, urgent efforts are needed to find safe and effective therapeutic strategies. Gypenoside (Gyp) is a widely used natural product that regulates blood glucose to improve disease progression with few toxic side effects. Given the crucial role of abnormal glycometabolism in driving tumor malignancy, it is important to explore the association between Gyp and glycometabolism in GC and understand the mechanism of action by which Gyp influences glycometabolism. In this study, we demonstrated that Gyp suppresses GC proliferation and migration both in vitro and in vivo. We identified that Gyp suppresses the malignant progression of GC by inhibiting glycolysis using network pharmacology and metabolomics. Transcriptome analysis revealed that the Hippo pathway is a key regulator of glycolysis by Gyp in GC. Furthermore, Gyp induced upregulation of LATS1/2 proteins, leading to increased YAP phosphorylation and decreased TAZ protein expression. The YAP agonist XMU-MP-1 rescued the inhibitory effect of Gyp on GC proliferation by reversing glycolysis. These findings confirmed that Gyp inhibits GC proliferation by targeting glycolysis through the Hippo pathway. Our study examined the role of Gyp in the malignant progression of GC, explored its therapeutic prospects, elucidated a mechanism by which Gyp suppresses GC proliferation through interference with the glycolytic process, thus providing a potential novel therapeutic strategy for GC patients., (© 2024. The Author(s).)
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- 2024
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45. Advances in the treatment of diabetic peripheral neuropathy by modulating gut microbiota with traditional Chinese medicine.
- Author
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Li YY, Guan RQ, Hong ZB, Wang YL, and Pan LM
- Abstract
Diabetic peripheral neuropathy (DPN) is one of the strongest risk factors for diabetic foot ulcers (neuropathic ulcerations) and the existing ulcers may further deteriorate due to the damage to sensory neurons. Moreover, the resulting numbness in the limbs causes difficulty in discovering these ulcerations in a short time. DPN is associated with gut microbiota dysbiosis. Traditional Chinese medicine (TCM) compounds such as Shenqi Dihuang Decoction, Huangkui Capsules and Qidi Tangshen Granules can reduce the clinical symptoms of diabetic nephropathy by modulating gut microbiota. The current review discusses whether TCM compounds can reduce the risk of DPN by improving gut mic-robiota., Competing Interests: Conflict-of-interest statement: There is no conflict-of-interest., (©The Author(s) 2024. Published by Baishideng Publishing Group Inc. All rights reserved.)
- Published
- 2024
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46. Quantum modeling simulates nutrient effect of bioplastic polyhydroxyalkanoate (PHA) production in Pseudomonas putida.
- Author
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Ho LYL, Pan L, Meng F, Ho KTM, Liu F, Wu MT, Lei HI, Bhachu G, Wang X, Dahlsten O, Sun Y, Lee PH, and Tan GYA
- Subjects
- Carbon metabolism, Quantum Theory, Nutrients metabolism, Models, Biological, Pseudomonas putida metabolism, Pseudomonas putida genetics, Polyhydroxyalkanoates biosynthesis, Polyhydroxyalkanoates metabolism, Nitrogen metabolism
- Abstract
Polyhydroxyalkanoates (PHAs) could be used to make sustainable, biodegradable plastics. However, the precise and accurate mechanistic modeling of PHA biosynthesis, especially medium-chain-length PHA (mcl-PHA), for yield improvement remains a challenge to biology. PHA biosynthesis is typically triggered by nitrogen limitation and tends to peak at an optimal carbon-to-nitrogen (C/N) ratio. Specifically, simulation of the underlying dynamic regulation mechanisms for PHA bioprocess is a bottleneck owing to surfeit model complexity and current modeling philosophies for uncertainty. To address this issue, we proposed a quantum-like decision-making model to encode gene expression and regulation events as hidden layers by the general transformation of a density matrix, which uses the interference of probability amplitudes to provide an empirical-level description for PHA biosynthesis. We implemented our framework modeling the biosynthesis of mcl-PHA in Pseudomonas putida with respect to external C/N ratios, showing its optimization production at maximum PHA production of 13.81% cell dry mass (CDM) at the C/N ratio of 40:1. The results also suggest the degree of P. putida's preference in channeling carbon towards PHA production as part of the bacterium's adaptative behavior to nutrient stress using quantum formalism. Generic parameters (k
D , kN and theta θ) obtained based on such quantum formulation, representing P. putida's PHA biosynthesis with respect to external C/N ratios, was discussed. This work offers a new perspective on the use of quantum theory for PHA production, demonstrating its application potential for other bioprocesses., (© 2024. The Author(s).)- Published
- 2024
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47. Oleandrin enhances radiotherapy sensitivity in lung cancer by inhibiting the ATM/ATR-mediated DNA damage response.
- Author
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Wu Q, Liu X, Wang LM, Yang YH, Pan LF, Zhang JJ, Wang YQ, Yao QH, Ma SL, and Zhang SR
- Subjects
- Humans, Animals, Cell Line, Tumor, Mice, Radiation Tolerance drug effects, Signal Transduction drug effects, Apoptosis drug effects, Radiation-Sensitizing Agents pharmacology, Mice, Nude, Xenograft Model Antitumor Assays, DNA Repair drug effects, Cell Proliferation drug effects, A549 Cells, Ataxia Telangiectasia Mutated Proteins metabolism, Lung Neoplasms drug therapy, Lung Neoplasms radiotherapy, Cardenolides pharmacology, DNA Damage drug effects
- Abstract
Despite active clinical trials on the use of Oleandrin alone or in combination with other drugs for the treatment of solid tumors, the potential synergistic effect of Oleandrin with radiotherapy remains unknown. This study reveals a new mechanism by which Oleandrin targets ATM and ATR kinase-mediated radiosensitization in lung cancer. Various assays, including clonogenic, Comet, immunofluorescence staining, apoptosis and Cell cycle assays, were conducted to evaluate the impact of oleandrin on radiation-induced double-strand break repair and cell cycle distribution. Western blot analysis was utilized to investigate alterations in signal transduction pathways related to double-strand break repair. The efficacy and toxicity of the combined therapy were assessed in a preclinical xenotransplantation model. Functionally, Oleandrin weakens the DNA damage repair ability and enhances the radiation sensitivity of lung cells. Mechanistically, Oleandrin inhibits ATM and ATR kinase activities, blocking the transmission of ATM-CHK2 and ATR-CHK1 cell cycle checkpoint signaling axes. This accelerates the passage of tumor cells through the G2 phase after radiotherapy, substantially facilitating the rapid entry of large numbers of inadequately repaired cells into mitosis and ultimately triggering mitotic catastrophe. The combined treatment of Oleandrin and radiotherapy demonstrated superior inhibition of tumor proliferation compared to either treatment alone. Our findings highlight Oleandrin as a novel and effective inhibitor of ATM and ATR kinase, offering new possibilities for the development of clinical radiosensitizing adjuvants., (© 2024 John Wiley & Sons Ltd.)
- Published
- 2024
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48. Easy-to-Lay Poly-N Heterocyclic Additives Enable Long-Term Stabilization of Zinc-Ion Capacitor Anodes under Deep Plating/Stripping.
- Author
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Bu Y, Kang Q, Zhu Z, Zhang H, Li Y, Wang S, Tang S, Pan L, Yang L, and Liang H
- Abstract
Addition of organic compounds containing O/N heteroatoms to aqueous electrolytes such as ZnSO
4 (ZS) solutions is one of the effective strategies to inhibit Zn anode dendrites and side reactions. However, addressing the stability of Zn plating/stripping at high current densities and areal capacities by this method is still a challenge, especially in capacitors known for high power and long life. Herein, an organic heterocyclic compound of 1, 4, 7, 10-tetraazacyclododecane (TC) containing four symmetrically distributed N atoms is employed as ZS additive, expanding the life of Zn anodes from ≈ 30 h to 1000 and 240 h at deep plating/stripping conditions of 10 and 20 mA cm-2 /mAh cm-2 , respectively; the cumulative capacity is as high as 5.0 Ah cm-2 with 99% Coulombic efficiency, far exceeding reported additives. TC with higher binding energies than H2 O for Zn species tends to adsorb to Zn (002) in a lying manner and participate in the solvation shell of Zn2+ , thus avoiding Zn dendrites and side-reaction damage, especially at high current densities. The TC-endowed Zn anode's stability under such extreme conditions is verified in Zn-ion capacitors (i.e., > 94.6% capacity retention after 28 000 cycles), providing new insights into the development of high-power Zn-based energy storage devices., (© 2024 The Author(s). Advanced Science published by Wiley‐VCH GmbH.)- Published
- 2024
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49. Application of luminescent Photobacterium Phosphoreum T3 for the detection of zearalenone and estimating the efficiency of their enzymatic degradation.
- Author
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Chen SR, Chen LH, Pan L, and Wang B
- Subjects
- Luminescent Measurements, Luminescence, Food Contamination analysis, Zearalenone analysis, Zearalenone metabolism, Photobacterium drug effects
- Abstract
Zearalenone (ZEN), a nonsteroidal estrogenic mycotoxin, causes enormous economic losses in the food and feed industries. Simple, rapid, low-cost, and quantitative analysis of ZEN is particularly urgent in the fields of food safety and animal husbandry. Using the bioluminescent bacterium Photobacterium phosphoreum T3, we propose a bioluminescence inhibition assay to evaluate ZEN levels quickly. The limit of detection (LOD), limit of quantification (LOQ), and quantitative working range of this bioluminescence inhibition assay were 0.1 µg/mL, 5 µg/mL, and 5-100 µg/mL, respectively. The concentration-response curve of the bioluminescence inhibition rate and ZEN concentration was plotted within the range 5 to 100 μg/mL, as follows: y = 0.0069x
2 - 0.0190x + 7.9907 (R2 = 0.9943, y is luminescence inhibition rate, x is ZEN concentration). First, we used the bioluminescence inhibition assay to detect the remaining ZEN in samples treated with purified lactonohydrolase ZHD101. The bioluminescence inhibition assay results showed a strong correlation with the HPLC analysis. Furthermore, we successfully evaluated the overall toxicity of samples treated with purified peroxidase Prx and H2 O2 using the P. phosphoreum T3 bioluminescence inhibition assay. The results indicate that the degradation products of ZEN created by purified peroxidase Prx and H2 O2 showed little toxicity to P. phosphoreum T3. In this study, a simple, rapid, and low-cost assay method of zearalenone by bioluminescent P. phosphoreum T3 was developed. The bioluminescence inhibition assay could be used to estimate the efficiency of enzymatic degradation of ZEN.- Published
- 2024
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50. Characterisation of the novel HLA-A*24:630 allele by sequencing-based typing.
- Author
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Pan L, Zhang A, Zhao L, Tang W, and Fu B
- Subjects
- Humans, Codon, HLA-A24 Antigen genetics, HLA-A24 Antigen immunology, Polymorphism, Single Nucleotide, Sequence Alignment, Alleles, Base Sequence, Exons, Histocompatibility Testing methods, Sequence Analysis, DNA methods
- Abstract
HLA-A*24:630 differs from HLA-A*24:20:01:01 by one nucleotide substitution in codon 131 in exon 3., (© 2024 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
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