237 results on '"Xiong X"'
Search Results
2. A real-world pharmacovigilance study of FDA adverse event reporting system events for Lutetium-177-PSMA-617
- Author
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Shangrong Wu, Wenjin Hu, Mingzhe Chen, Xiong Xiao, and Ranlu Liu
- Subjects
Medicine ,Science - Abstract
Abstract Lutetium-177(177Lu)–PSMA-617 has been approved for the treatment of metastatic castration-resistant prostate cancer (mCRPC). Our main objective is to elucidate the association between 177Lu-PSMA-617 and reported adverse events (AEs) in the FDA Adverse Event Reporting System (FAERS) database. Relevant information regarding 177Lu-PSMA-617 usage and reports of AEs was extracted from the FAERS database. The Empirical Bayes Geometric Mean (EBGM), Proportional Reporting Ratio (PRR), Reporting Odds Ratio (ROR), and Bayesian Confidence Propagation Neural Network (BCPNN) with their 95% confidence intervals (CI) were calculated using four algorithms of disproportionality analysis. The pharmacovigilance signals deemed significant across the four algorithms were considered associated with drug use. We collected 6266 unique reports related to 177Lu-PSMA-617 usage from the FAERS database. Compared to other drugs, 177Lu-PSMA-617 usage was associated with a higher risk of anemia, platelet count decreased, and pancytopenia. In addition to hematologic AEs, consistent high signals were observed for AEs such as dry mouth, laboratory test abnormal, and general physical health deterioration. The analysis based on mCRPC treatment drugs showed that full blood count decreased, general physical health deterioration, and laboratory test abnormal continued to exhibit significant signals. Furthermore, the number of AEs reports for 177Lu-PSMA-617 decreased over time, with most reports occurring within one month after drug administration. Our study compiled AEs associated with 177Lu-PSMA-617 in real-world drug usage and highlighted its propensity for specific AEs in the context of mCRPC treatment. These findings will contribute to enhancing our clinical experience with this medication.
- Published
- 2024
- Full Text
- View/download PDF
3. Theory and application of robust linear phase-shift algorithm for phase-shift deflectometry method
- Author
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Song Yang, Xianyong Zhu, Zhirui Cao, Jiali Zhao, Xiong Xiao, Changchun Lv, Yang Du, Ruiqing Wang, Peng Wu, and Zheyuan Wang
- Subjects
Phase-shift deflectometry ,Gamma distortion ,Detuning error ,Phase shift algorithm ,Medicine ,Science - Abstract
Abstract Based on the polynomial theory, the error propagation characteristics of the widely used N-step discrete Fourier transform (N-DFT) phase-shift algorithm were analyzed via theoretical analysis, under the effect of Gamma distortion and phase detuning. The results showed that the N-DFT algorithm could not simultaneously suppress both types of error. A robust linear phase-shift (RLPS) algorithm was designed, the performance of the RLPS and 8-DFT algorithms in terms of spectral response, detuning robustness, and $${G}_{S/N}$$ G S / N was briefly analysis by Manuel Servin method. The Simulation analysis and comparison of the results show that the RLPS algorithm could suppress both types of error simultaneously, which exhibited better stability and accuracy than N-DFT and exponential algorithms, particularly in gradient measurement stability, peak-to-valley (PV) and root-mean-square (RMS) error suppression. Moreover, a physical experiment apparatus was built to test unidirectionally inclined plane mirror and concave mirror using the RLPS, N-DFT, and exponential algorithms. The results showed that the RLPS algorithm could significantly improve the measurement stability and accuracy in the presence of detuning and without screen Gamma calibration.
- Published
- 2024
- Full Text
- View/download PDF
4. An integrated hyperspectral imaging and genome-wide association analysis platform provides spectral and genetic insights into the natural variation in rice
- Author
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Hui Feng, Zilong Guo, Wanneng Yang, Chenglong Huang, Guoxing Chen, Wei Fang, Xiong Xiong, Hongyu Zhang, Gongwei Wang, Lizhong Xiong, and Qian Liu
- Subjects
Medicine ,Science - Abstract
Abstract With progress of genetic sequencing technology, plant genomics has experienced rapid development and subsequently triggered the progress of plant phenomics. In this study, a high-throughput hyperspectral imaging system (HHIS) was developed to obtain 1,540 hyperspectral indices at whole-plant level during tillering, heading, and ripening stages. These indices were used to quantify traditional agronomic traits and to explore genetic variation. We performed genome-wide association study (GWAS) of these indices and traditional agronomic traits in a global rice collection of 529 accessions. With the genome-level suggestive P-value threshold, 989 loci were identified. Of the 1,540 indices, we detected 502 significant indices (designated as hyper-traits) that exhibited phenotypic and genetic relationship with traditional agronomic traits and had high heritability. Many hyper-trait-associated loci could not be detected using traditional agronomic traits. For example, we identified a candidate gene controlling chlorophyll content (Chl). This gene, which was not identified based on Chl, was significantly associated with a chlorophyll-related hyper-trait in GWAS and was demonstrated to control Chl. Moreover, our study demonstrates that red edge (680–760 nm) is vital for rice research for phenotypic and genetic insights. Thus, combination of HHIS and GWAS provides a novel platform for dissection of complex traits and for crop breeding.
- Published
- 2017
- Full Text
- View/download PDF
5. A real-world pharmacovigilance study of FDA adverse event reporting system events for Lutetium-177-PSMA-617.
- Author
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Wu S, Hu W, Chen M, Xiao X, and Liu R
- Subjects
- Humans, United States, Male, Heterocyclic Compounds, 1-Ring adverse effects, Dipeptides adverse effects, Bayes Theorem, Databases, Factual, Prostate-Specific Antigen, Pharmacovigilance, Lutetium adverse effects, Adverse Drug Reaction Reporting Systems, Prostatic Neoplasms, Castration-Resistant drug therapy, Prostatic Neoplasms, Castration-Resistant pathology, United States Food and Drug Administration
- Abstract
Lutetium-177(
177 Lu)-PSMA-617 has been approved for the treatment of metastatic castration-resistant prostate cancer (mCRPC). Our main objective is to elucidate the association between177 Lu-PSMA-617 and reported adverse events (AEs) in the FDA Adverse Event Reporting System (FAERS) database. Relevant information regarding177 Lu-PSMA-617 usage and reports of AEs was extracted from the FAERS database. The Empirical Bayes Geometric Mean (EBGM), Proportional Reporting Ratio (PRR), Reporting Odds Ratio (ROR), and Bayesian Confidence Propagation Neural Network (BCPNN) with their 95% confidence intervals (CI) were calculated using four algorithms of disproportionality analysis. The pharmacovigilance signals deemed significant across the four algorithms were considered associated with drug use. We collected 6266 unique reports related to177 Lu-PSMA-617 usage from the FAERS database. Compared to other drugs,177 Lu-PSMA-617 usage was associated with a higher risk of anemia, platelet count decreased, and pancytopenia. In addition to hematologic AEs, consistent high signals were observed for AEs such as dry mouth, laboratory test abnormal, and general physical health deterioration. The analysis based on mCRPC treatment drugs showed that full blood count decreased, general physical health deterioration, and laboratory test abnormal continued to exhibit significant signals. Furthermore, the number of AEs reports for177 Lu-PSMA-617 decreased over time, with most reports occurring within one month after drug administration. Our study compiled AEs associated with177 Lu-PSMA-617 in real-world drug usage and highlighted its propensity for specific AEs in the context of mCRPC treatment. These findings will contribute to enhancing our clinical experience with this medication., (© 2024. The Author(s).)- Published
- 2024
- Full Text
- View/download PDF
6. Implications of ITCH-mediated ubiquitination of SIX1 on CDC27-cyclinB1 signaling in nasopharyngeal carcinoma.
- Author
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Lin Z, Cai W, Sun Y, Han B, Hu Y, Huang S, Li J, and Chen X
- Subjects
- Humans, Cell Line, Tumor, Cell Movement, Gene Expression Regulation, Neoplastic, Repressor Proteins metabolism, Repressor Proteins genetics, Animals, Mice, Male, Female, Mice, Nude, Nasopharyngeal Carcinoma metabolism, Nasopharyngeal Carcinoma pathology, Nasopharyngeal Carcinoma genetics, Ubiquitin-Protein Ligases metabolism, Ubiquitin-Protein Ligases genetics, Signal Transduction, Cell Proliferation, Ubiquitination, Nasopharyngeal Neoplasms metabolism, Nasopharyngeal Neoplasms pathology, Nasopharyngeal Neoplasms genetics, Homeodomain Proteins metabolism, Homeodomain Proteins genetics
- Abstract
Nasopharyngeal carcinoma (NPC) presents a significant medical challenge due to its high incidence rate and poor prognosis, which are attributed primarily to tumor metastasis and drug resistance. Sine oculis homeobox homolog 1 (SIX1) has been identified as a crucial target for cancer treatment. However, its role in NPC remains incompletely understood. This study investigated the mechanisms by which the degradation of the SIX1 protein, which is mediated by ubiquitin, affects the malignant characteristics of NPC throughout the cell cycle. Our findings reveal that reduced expression of the itchy E3 ubiquitin ligase E3 (ITCH) in NPC impedes the degradation of the SIX1 protein, leading to enhance oncogenic properties. Knockdown experiments which SIX1 was inhibited demonstrated a decrease in the proliferation, migration, and invasion of NPC cell lines, whereas overexpression of SIX1 yielded the opposite effects. Further experimental validation revealed that SIX1 promotes NPC progression via the cell division cycle 27 (CDC27)/cyclin B1 axis. These findings provide valuable insights into potential therapeutic targets and prognostic indicators for NPC treatment, emphasizing the ITCH/SIX1/CDC27/cyclin B1 axis as a promising target for novel therapies., (© 2024. The Author(s).)
- Published
- 2024
- Full Text
- View/download PDF
7. Theoretical study on ligand conformational self-adaptation for modulating reactivity.
- Author
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Shan C, Liu X, Luo X, and Lan Y
- Abstract
The combination of Josiphos-type ligands with Pd catalysts has been instrumental in the rapid development of efficient catalytic processes. We performed density functional theory (DFT) calculations to elucidate the mechanisms and dynamic conformational changes responsible for the reactivity and selectivity observed in Pd-catalysed bicyclization/carbonylation of 1,6-enynes. DFT calculations indicated that the most favourable reaction pathway involves an unusual alkene insertion into the carbon-palladium bond to give high level of enantioselectivity. Here, the reactivity is enhanced by the self-adaptation of the Josiphos-Pd backbone, which allows for two distinct ligand conformations with different steric environments. A half-chair conformation is preferred in migratory insertion, which is both the rate-determining step and the enantioselectivity controlling step. The less hindered steric environment of the half-chair conformation allows for rapid migratory insertion, as confirmed by Surface distance projection maps and IGM analysis. Furthermore, IGM analysis shows that the steric effect between the phenyl group in the ligand and the methyl group on the allene of the substrate is important for enantioselectivity control., (© 2024. The Author(s).)
- Published
- 2024
- Full Text
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8. Clinical study on the intervention effect of digital therapy on children with attention deficit hyperactivity disorder (ADHD).
- Author
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Huang S, Zhang T, Lu Q, Xiong X, Liu Z, and Sun D
- Subjects
- Humans, Child, Male, Female, Treatment Outcome, China, Parents psychology, Attention, Attention Deficit Disorder with Hyperactivity therapy
- Abstract
To evaluate the efficacy and safety of digital therapy for children aged 6 to 12 years with attention deficit hyperactivity disorder (ADHD). From January to March 2023, 52 children aged 6 to 12 years with attention deficit hyperactivity disorder (ADHD) from Wuhan Children's Hospital, Hubei Province, China were selected for intervention using the "MindPro1" attention training software developed by Jiangsu Ruinao Qizhi Medical Technology Co., Ltd. Before the intervention, the children were in a stable treatment state, and no modifications were made to the original treatment plan during the MindPro1 intervention. Subjects with severe mental illness or other conditions that may affect the implementation and evaluation of disease treatment were excluded. Subjects completed the planned 4-week intervention, and changes in attention-related variables were assessed using the Test of Attention Variables (TOVA) and the parent version of the 18-item SNAP-IV scale (Swanson, Nolan, and Pelham, version IV scale) before and after the intervention. After 4 weeks of intervention, the lower limit of the 95% confidence interval of the response rate of the 18-item SNAP-IV-Parent scale, which was ≥ 30% improvement from baseline, was higher than 27.5% (better than similar products on the market); the SNAP-IV parent score improved (P < 0.001), with statistical significance; the TOVA-ACS score improved (P < 0.05), with statistical significance. The acceptance rate of parents of children was 100%, and the average compliance rate was 95%. There were 4 cases (7.69%) of adverse reactions that may be related to the device in this trial, which recovered spontaneously within 2 days of discontinuation, and no serious adverse events occurred. After 4 weeks of treatment with ADHD auxiliary treatment software, the objective attention assessment data and attention function assessment scale were significantly improved. Parents had a high acceptance of the software, the average compliance rate of participants was high, and the incidence of related adverse events was low and mild., (© 2024. The Author(s).)
- Published
- 2024
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9. Empirical study on the relationship between economic growth and implied carbon emissions in Western China's undertaking of international industrial transfer.
- Author
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Wang Y, Wang L, Wang Y, Wu Y, Li M, Wang X, and Zhou W
- Abstract
In the macro context of global climate change, given the profound challenges that the intensifying greenhouse effect poses to global ecological balance and sustainable economic and social development, the role of foreign direct investment (FDI) is increasingly acknowledged, particularly regarding its dual impact on the environment: while serving as a catalyst for economic growth, it might also exacerbate carbon emissions in host countries. This paper focuses on the panel data of 11 provinces and cities in the western region (excluding Xizang) from 2006 to 2021, calculates the implied carbon of foreign-invested enterprises in the western region, and explores the relationship between the implied carbon of foreign-invested enterprises in the western region and the economic development of the western region. The results indicate that from 2006 to 2021, the implied net carbon value of import and export trade of foreign-invested enterprises in the western region was greater than zero and roughly exhibited an upward trend year by year. FDI has an environmental deficit in terms of carbon emissions in the western region; FDI in the western region has a significant positive effect on the implied carbon emissions in import and export trade; The GDP of the western region has a significant positive effect on the implied carbon emissions of import and export trade. Therefore, this article puts forward corresponding suggestions from five aspects: policy incentives and regulatory constraints, technology research and innovation drive, clean energy development and resource recycling, international cooperation and regional linkage, and public awareness enhancement and cultural advocacy., (© 2024. The Author(s).)
- Published
- 2024
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10. Estimation of gross calorific value of coal based on the cubist regression model.
- Author
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Chen J, He Y, Liang Y, Wang W, and Duan X
- Abstract
The gross calorific value (GCV) of coal is an important parameter for evaluating coal quality, and regression analysis methods can be used to predict GCV. In this study, we proposed a GCV prediction model based on cubist regression. To develop a good regression model, feature selection of input variables was performed using a correlation analysis and a recursive feature elimination algorithm. Thus, in this study, we determined three sets of variables as the optimal combination for regression models: proximate analysis variables (Set 1: moisture, standard ash, and volatile matter), element analysis variables (Set 2: carbon, sulfur, and oxygen), and comprehensive index variables (Set 3: carbon, volatile matter, standard ash, sulfur, moisture, and hydrogen). Results for comparison with multiple linear regression, random forest regression, and numerous previous prediction models, such as gradient boosting regression tree, support vector regression (SVR), backpropagation neural networks, and particle swarm optimization-artificial neural network (PSO-ANN), indicate that these seven regression models have the best fitting effect on the comprehensive index variables among the three sets of input variables. The cubist model showed higher prediction accuracy and lower error than most other models (R
2 , mean absolute error, root mean square error, and average absolute relative deviation percentage values are 0.990, 0.476, 0.668, and 0.086% for the proximate analysis variables; 0.992, 0.381, 0.596, and 0.140% for element analysis variables; and 0.999, 0.161, 0.219, and 0.087% for comprehensive index variables, respectively). The cubist model combines the advantages of decision tree and linear regression, which not only enables it to perform well in terms of accuracy but also makes the model highly interpretable because it is based on multiple sublinear equations. In addition, the cubist model shows obvious advantages in terms of running speed, especially compared with SVR and PSO-ANN, which require complex parameter optimization. In summary, the cubist model considers the prediction accuracy, model interpretability, and computational efficiency as well as provides a new and effective method for GCV prediction., (© 2024. The Author(s).)- Published
- 2024
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11. Assessment and simulation of eco-environmental quality changes in rapid rural urbanization: Xiong'an New Area, China.
- Author
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Lin Z, Xu H, Yao X, and Zhu Z
- Abstract
Xiong'an New Area was established as a state-level new area in 2017 and serves as a typical representative area for studying the ecological evolution of rural areas under rapid urbanization in China. Remote sensing-based ecological index (RSEI) is a regional eco-environmental quality (EEQ) assessment index. Many studies have employed RSEI to achieve rapid, objective, and effective quantitative assessment of the spatio-temporal changes of regional EEQ. However, research that combines RSEI with machine learning algorithms to conduct multi-scenario simulation of EEQ is still relatively scarce. Therefore, this study assessed and simulated EEQ changes in Xiong'an and revealed that: (1) The large-scale construction has led to an overall decline in EEQ, with the RSEI decreasing from 0.648 in 2014 to 0.599 in 2021. (2) Through the multi-scenario simulation, the non-unidirectional evolution of RSEI during the process of urban-rural construction has been revealed, specifically characterized by a significant decline followed by a slight recovery. (3) The marginal effects of urban-rural construction features for simulated RSEI demonstrate an inverted "U-shaped" curve in the relationship between urbanization and EEQ. This indicates that urbanization and EEQ may not be absolute zero-sum. These findings can provide scientific insights for maintaining and improving the regional EEQ in urban-rural construction., (© 2024. The Author(s).)
- Published
- 2024
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12. Effect of aluminum and ammonium perchlorate particle sizes on the condensed combustion products characteristics of aluminized NEPE propellants.
- Author
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Tu C, Chen X, Chen F, Zhuang Y, Cai W, Li Y, Li W, Zhou C, and Xie R
- Abstract
Aluminum (Al) is usually added to solid propellants to improve the combustion performance, however the condensed combustion products (CCPs) especially the large agglomerates generated from aluminum combustion can reduce the specific impulse of the engine, and result in two-phase loss, residue accumulation and throat liner ablation. Al and ammonium perchlorate (AP), as important components of NEPE propellants, can affect the formation process of the CCPs of aluminized NEPE propellants. To clarify the effect of Al and AP particle sizes on the properties of the CCPs of aluminized NEPE propellants, a constant-pressure quench vessel was adopted to collect the combustion products of four different formulations of NEPE propellants. It was found that the condensed combustion products are mainly divided into aluminum agglomerates and oxide particles, the diameter of the aluminum agglomerates of these four different formulations of NEPE propellants at 7 MPa was smaller than that in 3 MPa, and the shells of the aluminum agglomerates were smoother and the spherical shape was more perfect. X-ray diffraction analysis of the CCPs of the four NEPE propellants under 3 MPa revealed the presence of both Al and Al
2 O3 . With the increase of the particle size of Al and AP, the oxidation degree of aluminum particles decreases. The particle size of the CCPs of the four different formulations of NEPE propellants under 1 and 3 MPa was analyzed by using a laser particle size analyzer, it is found that the increase of AP particle size is helpful to reduce the size of condensate combustion products. Based on the classical pocket theory, establishing a new agglomeration size prediction model, which can be used to predict the agglomeration size on the burning surface. Compared with the empirical model, the new agglomeration size prediction model is in good agreement with the experimental results., (© 2024. The Author(s).)- Published
- 2024
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13. A novel predictor for dosimetry data of lung and the radiation pneumonitis incidence prior to SBRT in lung cancer patients.
- Author
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Yang X, Dai Z, Song H, Gong H, and Li X
- Subjects
- Humans, Male, Female, Aged, Middle Aged, Incidence, Lung radiation effects, Radiotherapy Dosage, Aged, 80 and over, Radiotherapy Planning, Computer-Assisted, Radiation Pneumonitis epidemiology, Radiation Pneumonitis etiology, Lung Neoplasms radiotherapy, Radiosurgery adverse effects, Radiosurgery methods, Radiometry
- Abstract
Normal tissue complication probability (NTCP) models for radiation pneumonitis (RP) in lung cancer patients with stereotactic body radiation therapy (SBRT), which based on dosimetric data from treatment planning, are limited to patients who have already received radiation therapy (RT). This study aims to identify a novel predictive factor for lung dose distribution and RP probability before devising actionable SBRT plans for lung cancer patients. A comprehensive correlation analysis was performed on the clinical and dose parameters of lung cancer patients who underwent SBRT. Linear regression models were utilized to analyze the dosimetric data of lungs. The performance of the regression models was evaluated using mean squared error (MSE) and the coefficient of determination (R
2 ). Correlational analysis revealed that most clinical data exhibited weak correlations with dosimetric data. However, nearly all dosimetric variables showed "strong" or "very strong" correlations with each other, particularly concerning the mean dose of the ipsilateral lung (MI) and the other dosimetric parameters. Further study verified that the lung tumor ratio (LTR) was a significant predictor for MI, which could predict the incidence of RP. As a result, LTR can predict the probability of RP without the need to design an elaborate treatment plan. This study, as the first to offer a comprehensive correlation analysis of dose parameters, explored the specific relationships among them. Significantly, it identified LTR as a novel predictor for both dose parameters and the incidence of RP, without the need to design an elaborate treatment plan., (© 2024. The Author(s).)- Published
- 2024
- Full Text
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14. Theory and application of robust linear phase-shift algorithm for phase-shift deflectometry method.
- Author
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Yang S, Zhu X, Cao Z, Zhao J, Xiao X, Lv C, Du Y, Wang R, Wu P, and Wang Z
- Abstract
Based on the polynomial theory, the error propagation characteristics of the widely used N-step discrete Fourier transform (N-DFT) phase-shift algorithm were analyzed via theoretical analysis, under the effect of Gamma distortion and phase detuning. The results showed that the N-DFT algorithm could not simultaneously suppress both types of error. A robust linear phase-shift (RLPS) algorithm was designed, the performance of the RLPS and 8-DFT algorithms in terms of spectral response, detuning robustness, and G S / N was briefly analysis by Manuel Servin method. The Simulation analysis and comparison of the results show that the RLPS algorithm could suppress both types of error simultaneously, which exhibited better stability and accuracy than N-DFT and exponential algorithms, particularly in gradient measurement stability, peak-to-valley (PV) and root-mean-square (RMS) error suppression. Moreover, a physical experiment apparatus was built to test unidirectionally inclined plane mirror and concave mirror using the RLPS, N-DFT, and exponential algorithms. The results showed that the RLPS algorithm could significantly improve the measurement stability and accuracy in the presence of detuning and without screen Gamma calibration., (© 2024. The Author(s).)
- Published
- 2024
- Full Text
- View/download PDF
15. Numerical approximation for algorithmic tangent moduli for nonlinear viscoelastic model with CSDA method.
- Author
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Fan X, Xu J, and Chen X
- Abstract
This work revisits the notion of complex step derivative approximation (CSDA) and presents its use in constitutive model of a class of nonlinear viscoelastic materials. The effectiveness of a CSDA is evaluated by putting it through a series of straightforward examples. After that, the idea of the CSDA is put to use in order to carry out a numerical evaluation of the algorithmic tangent moduli of a viscoelastic constitutive model. The performance of the constitutive models is evaluated through the use of three different numerical tests, and the results are compared to those that were achieved by the application of an analytical method. In comparison to other numerical differentiation techniques, It has been found that the CSDA scheme is the most computationally efficient and robust method of numerical differentiation, regardless of the size of the finite difference interval., (© 2024. The Author(s).)
- Published
- 2024
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16. Optimization scheduling of microgrid comprehensive demand response load considering user satisfaction.
- Author
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Wang C and Li X
- Abstract
The original load control model of microgrid based on demand response lacks the factors of incentive demand response, the overall satisfaction of users is low, the degree of demand response is low, the Time Of Use (TOU) price of peak-valley filling capacity is weak, and the peak-valley difference of load curve is large. Regarding the limitations of the current microgrid demand response model, this study further optimizes the flexible load control strategy and proposes a two-objective optimization model based on price and incentive. Meanwhile, the model is solved using an improved chaotic particle group algorithm. Finally, the microgrid load data were selected for simulation analysis. The simulation results showed that the comprehensive demand response of flexible control model proposed increased the overall satisfaction of users by 9.51%, the overall operating cost of microgrid suppliers decreased by 12.975/ten thousand yuan, the peak valley difference decreased by 4.61%, and the user demand response increased by 27.24%. The model effectively improves the overall profit of the supply side of the microgrid, improves the user satisfaction, and maximizes the linkage benefits of the supply and demand of the micro grid. In addition, the model effectively reduces the phenomenon of distributed power supply in the microgrid, and realizes the supply and demand matching of the whole load in the microgrid., (© 2024. The Author(s).)
- Published
- 2024
- Full Text
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17. Assessing land-use changes and carbon storage: a case study of the Jialing River Basin, China.
- Author
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Yang S, Li L, Zhu R, Luo C, Lu X, Sun M, and Xu B
- Abstract
Land-use change is the main driver of carbon storage change in terrestrial ecosystems. Currently, domestic and international studies mainly focus on the impact of carbon storage changes on climate, while studies on the impact of land-use changes on carbon storage in complex terrestrial ecosystems are few. The Jialing River Basin (JRB), with a total area of ~ 160,000 km
2 , diverse topography, and elevation differences exceeding 5 km, is an ideal case for understanding the complex interactions between land-use change and carbon storage dynamics. Taking the JRB as our study area, we analyzed land-use changes from 2000 to 2020. Subsequently, we simulated land-use patterns for business-as-usual (BAU), cropland protection (CP), and ecological priority (EP) scenarios in 2035 using the PLUS model. Additionally, we assessed carbon storage using the InVEST model. This approach helps us to accurately understand the carbon change processes in regional complex terrestrial ecosystems and to formulate scientifically informed land-use policies. The results revealed the following: (1) Cropland was the most dominant land-use type (LUT) in the region, and it was the only LUT experiencing net reduction, with 92.22% of newly designated construction land originating from cropland. (2) In the JRB, total carbon storage steadily decreased after 2005, with significant spatial heterogeneity. This pattern was marked by higher carbon storage levels in the north and lower levels in the south, with a distinct demarcation line. The conversion of cropland to construction land is the main factor driving the reduction in carbon storage. (3) Compared with the BAU and EP scenarios, the CP scenario demonstrated a smaller reduction in cropland area, a smaller addition to construction land area, and a lower depletion in the JRB total carbon storage from 2020 to 2035. This study demonstrates the effectiveness of the PLUS and InVEST models in analyzing complex ecosystems and offers data support for quantitatively assessing regional ecosystem services. Strict adherence to the cropland replenishment task mandated by the Chinese government is crucial to increase cropland areas in the JRB and consequently enhance the carbon sequestration capacity of its ecosystem. Such efforts are vital for ensuring the food and ecological security of the JRB, particularly in the pursuit of the "dual-carbon" objective., (© 2024. The Author(s).)- Published
- 2024
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18. Downregulation of enhancer RNA AC003092.1 is associated with poor prognosis in kidney renal clear cell carcinoma.
- Author
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Li J, Gan J, Chen C, Yuan Y, Xiong X, Li L, Luo P, and Zhang W
- Subjects
- Humans, Prognosis, Cell Line, Tumor, Down-Regulation genetics, Cell Movement genetics, Female, Male, RNA, Long Noncoding genetics, RNA, Long Noncoding metabolism, Computational Biology methods, Middle Aged, Enhancer RNAs, Carcinoma, Renal Cell genetics, Carcinoma, Renal Cell pathology, Carcinoma, Renal Cell metabolism, Kidney Neoplasms genetics, Kidney Neoplasms pathology, Kidney Neoplasms metabolism, Gene Expression Regulation, Neoplastic, Cell Proliferation genetics
- Abstract
Kidney renal clear cell carcinoma (KIRC) is the most common histological type of renal cancer, enhancer RNA plays a significant role in tumor growth, however, it has been less studied in renal cancer. The aim of this study was to investigate the role of eRNA AC003092.1 in KIRC. Clinical and RNA expression data were downloaded from a TCGA database, and performed bioinformatics analysis, including expression level analysis, survival analysis, clinical correlation analysis, immune correlation analysis. We further confirmed the expression level of AC003092.1 between normal and tumor cell, predicted the biological role of AC003092.1 in KIRC, and performed cell proliferation and wound healing assays, followed by GSEA enrichment analysis and western blot to detect the proteins of the enriched pathway. Bioinformatics results showed that AC003092.1 expression was elevated in tumor tissues, and knockdown of AC003092.1 expression inhibited cell proliferation and migration. GSEA and western blot results showed that knockdown AC003092.1 expression alleviated the extracellular matrix (ECM) process in KIRC cell lines. Our study provides evidence that AC003092.1 play an important role in KIRC, and AC003092.1 may promote tumor cell progression by affecting the ECM process during tumor development., (© 2024. The Author(s).)
- Published
- 2024
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19. Citrate and low-dose heparin combined anticoagulation in pediatric continuous renal replacement therapy.
- Author
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Zhu D, He J, Xiao Z, Zhou X, and Zhang X
- Subjects
- Humans, Male, Female, Child, Child, Preschool, Retrospective Studies, Infant, Hemorrhage prevention & control, Hemorrhage etiology, Blood Coagulation drug effects, Adolescent, Renal Replacement Therapy methods, Anticoagulants administration & dosage, Heparin administration & dosage, Continuous Renal Replacement Therapy methods, Citric Acid administration & dosage, Fibrin Fibrinogen Degradation Products analysis, Fibrin Fibrinogen Degradation Products metabolism
- Abstract
There remains no optimal anticoagulation protocol for continuous renal replacement therapy (CRRT) with regional citrate anticoagulation (RCA) in pediatric patients with elevated D-dimer levels. We aimed to assess the effects of different anticoagulation strategies on the risk of CRRT filter clotting in these patients. Pediatric patients undergoing CRRT were retrospectively grouped based on pre-CRRT D-dimer levels and anticoagulant: D-RCA group (normal D-dimer, RCA only, n = 22), D+ RCA group (elevated D-dimer, RCA only, n = 50), and D+ RCA+ systemic heparin anticoagulation (SHA) group (elevated D-dimer, RCA combined with SHA, n = 55). The risk of filter clotting and incidence of bleeding were compared among the groups. Among the groups, the D+ RCA+ SHA group had the longest filter lifespan; further, the incidence of bleeding was not increased by concurrent use of low-dose heparin for anticoagulation. Moreover, concurrent heparin anticoagulation was associated with a decreased risk of filter clotting. Contrastingly, high pre-CRRT hemoglobin and D-dimer levels and post-filter ionized calcium level > 0.4 mmol/L were associated with an increased risk of filter clotting. RCA combined with low-dose heparin anticoagulation could reduce the risk of filter clotting and prolong filter lifespan without increasing the risk of bleeding in patients with elevated D-dimer levels undergoing CRRT., (© 2024. The Author(s).)
- Published
- 2024
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20. A novel interpretable machine learning model approach for the prediction of TiO 2 photocatalytic degradation of air contaminants.
- Author
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Schossler RT, Ojo S, Jiang Z, Hu J, and Yu X
- Abstract
Air contaminants lead to various environmental and health issues. Titanium dioxide (TiO
2 ) features the benefits of autogenous photocatalytic degradation of air contaminants. To evaluate its performance, laboratory experiments are commonly used to determine the kinetics of the photocatalytic-degradation rate, which is labor intensive, time-consuming, and costly. In this study, Machine Learning (ML) models were developed to predict the photo-degradation rate constants of air-borne organic contaminants with TiO2 nanoparticles and ultraviolet irradiation. The hyperparameters of the ML models were optimized, which included Artificial Neural Network (ANN) with Bayesian optimization, gradient booster regressor (GBR) with Bayesian optimization, Extreme Gradient Boosting (XGBoost) with optimization using Hyperopt, and Catboost combined with Adaboost. The organic contaminant was encoded through Molecular fingerprints (MF). Imputation method was applied to deal with the missing data. A generative ML model Vanilla Gan was utilized to create synthetic data to further augment the size of available dataset and the SHapley Additive exPlanations (SHAP) was employed for ML model interpretability. The results indicated that data imputation allowed for the full utilization of the limited dataset, leading to good machine learning prediction performance and preventing common overfitting problems with small-sized data. Additionally, augmenting experimental data with synthetic data significantly improved prediction accuracy and considerably reduced overfitting issues. The results ranked the feature importance and assessed the impacts of different experimental variables on the rate of photo-degradation, which were consistent with physico-chemical laws., (© 2024. The Author(s).)- Published
- 2024
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21. Calf deep veins are safe and feasible accesses for the endovascular treatment of acute lower extremity deep vein thrombosis.
- Author
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Zeng X, Min X, Chen W, Zeng X, Ju Z, Dai K, Zhou W, and Qiu J
- Subjects
- Humans, Male, Female, Middle Aged, Retrospective Studies, Aged, Adult, Thrombectomy methods, Thrombectomy adverse effects, Treatment Outcome, Thrombolytic Therapy methods, Leg blood supply, Venous Thrombosis therapy, Endovascular Procedures methods, Endovascular Procedures adverse effects, Lower Extremity blood supply, Lower Extremity surgery
- Abstract
This study was designed to assess the optimal access route for the endovascular treatment of acute lower extremity deep vein thrombosis. This was a retrospective analysis of patients with acute lower extremity deep venous thrombosis who underwent endovascular treatment from February 2009 to December 2020. Patients underwent non-direct calf deep vein puncture (NDCDVP) from February 2009 to December 2011 and direct calf deep vein puncture (DCDVP) from January 2012 to December 2020. Catheter directed thrombolysis (CDT) was used to treat all patients in the NDCDVP group, whereas patients in the DCDVP group were treated with CDT or the AngioJet rhyolitic thrombectomy system. In patients exhibiting iliac vein compression syndrome, the iliac vein was dilated and implanted with a stent. Technical success rates and perioperative complication rates were compared between these two treatment groups. The NDCDVP group included 83 patients (40 males, 43 females) with a mean age of 55 ± 16 years, while the DCDVP group included 487 patients (231 males. 256 females) with a mean age of 56 ± 15 years. No significant differences were observed between these groups with respect to any analyzed clinical characteristics. The technical success rates in the NDCDVP and DCDVP groups were 96.4 and 98.2%, respectively (P > 0.05). In the NDCDVP group, the small saphenous vein (SSV)or great saphenous vein (GSV)were the most common access routes (77.1%, 64/83), whereas the anterior tibial vein (ATV) was the most common access route in the DCDVP group (78.0%, 380/487), followed by the posterior tibial vein (PTV) and peroneal vein (PV)(15.6% and 6.4%, respectively). Relative to the NDCDVP group, more patients in the DCDVP group underwent the removal of deep vein clots below the knee (7.2% [6/83] vs. 24.2% [118/487], P < 0.001). Moreover, relative to the NDCDVP group, significantly lower complication rates were evident in the DCDVP group (local infection: 10.8% vs. 0.4%, P < 0.001; local hematoma: 15.7% vs. 1.0%, P < 0.001). The position change rate was also significantly lower in the DCDVP group relative to the NDCDVP group (0% [0/487] vs. 60.2% [50/83], P < 0.001). The calf deep veins (CDVs) represent a feasible and safe access route for the endovascular treatment of lower extremity deep vein thrombosis., (© 2024. The Author(s).)
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- 2024
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22. Multi-cohort study on cytokine and chemokine profiles in the progression of COVID-19.
- Author
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Huang C, Hu X, Wang D, Gong R, Wang Q, Ren F, Wu Y, Chen J, Xiong X, Li H, Wang Q, Long G, Zhang D, and Han Y
- Subjects
- Humans, Female, Male, Middle Aged, Cohort Studies, Aged, Biomarkers blood, Adult, SARS-CoV-2, Severity of Illness Index, COVID-19 blood, COVID-19 immunology, Cytokines blood, Disease Progression, Chemokines blood
- Abstract
Various substances in the blood plasma serve as prognostic indicators of the progression of COVID-19. Consequently, multi-omics studies, such as proteomic and metabolomics, are ongoing to identify accurate biomarkers. Cytokines and chemokines, which are crucial components of immune and inflammatory responses, play pivotal roles in the transition from mild to severe illness. To determine the relationship between plasma cytokines and the progression of COVID-19, we used four study cohorts to perform a systematic study of cytokine levels in patients with different disease stages. We observed differential cytokine expression between patients with persistent-mild disease and patients with mild-to-severe transformation. For instance, IL-4 and IL-17 levels significantly increased in patients with mild-to-severe transformation, indicating differences within the mild disease group. Subsequently, we analysed the changes in cytokine and chemokine expression in the plasma of patients undergoing two opposing processes: the transition from mild to severe illness and the transition from severe to mild illness. We identified several factors, such as reduced expression of IL-16 and IL-18 during the severe phase of the disease and up-regulated expression of IL-10, IP-10, and SCGF-β during the same period, indicative of the deterioration or improvement of patients' conditions. These factors obtained from fine-tuned research cohorts could provide auxiliary indications for changes in the condition of COVID-19 patients., (© 2024. The Author(s).)
- Published
- 2024
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23. Purity control of simulated moving bed based on advanced fuzzy controller.
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Xie CF, Chen X, and Zhang H
- Abstract
Simulated moving bed (SMB) technology is considered one of the most successful techniques in chromatographic separation. However, due to the nonlinearity caused by discrete events and sensitivity to numerous separation performance parameters, purity control in SMB systems has been a challenging issue. Fuzzy controllers are increasingly popular in industrial environments due to their simplicity and effectiveness in handling nonlinearity. However, traditional fuzzy controllers used in industry often overlook considerations of error acceleration, resulting in slight deviations from target values under steady-state conditions and oscillatory behavior when system parameters change. This study proposes an advanced fuzzy controller, where in a series of experiments, the purity control targets for component B are set at 94% and 96%, and for component A are set at 96% and 96%, respectively. Experimental results indicate that the advanced fuzzy controller achieves higher precision, with an average deviation of around 0.1%, for both components B and A. Importantly, under variations in adsorbent parameter(from 0.01 to 0.03), feed concentration(from 4.5 to 5.2), and switching time(from 178 to 182), the experimental results demonstrate smoother control with the advanced controller, particularly when oscillations occur with conventional fuzzy controllers due to switching time variations, indicating robust control with the advanced fuzzy controller., (© 2024. The Author(s).)
- Published
- 2024
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24. Route planning of mobile robot based on improved RRT star and TEB algorithm.
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Yin X, Dong W, Wang X, Yu Y, and Yao D
- Abstract
This paper presents a fusion algorithm based on the enhanced RRT* TEB algorithm. The enhanced RRT* algorithm is utilized for generating an optimal global path. Firstly, proposing an adaptive sampling function and extending node bias to accelerate global path generation and mitigate local optimality. Secondly, eliminating path redundancy to minimize path length. Thirdly, imposing constraints on the turning angle of the path to enhance path smoothness. Conducting kinematic modeling of the mobile robot and optimizing the TEB algorithm to align the trajectory with the mobile robot's kinematics. The integration of these two algorithms culminates in the development of a fusion algorithm. Simulation and experimental results demonstrate that, in contrast to the traditional RRT* algorithm, the enhanced RRT* algorithm achieves a 5.8% reduction in path length and a 62.5% decrease in the number of turning points. Utilizing the fusion algorithm for path planning, the mobile robot generates a superior, seamlessly smooth global path, adept at circumventing obstacles. Furthermore, the local trajectory meticulously conforms to the kinematic constraints of the mobile robot., (© 2024. The Author(s).)
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- 2024
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25. Heterogeneous associations between interleukin-6 receptor variants and phenotypes across ancestries and implications for therapy.
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Wang X, Liu M, Nogues IE, Chen T, Xiong X, Bonzel CL, Zhang H, Hong C, Xia Y, Dahal K, Costa L, Cui J, Gaziano JM, Kim SC, Ho YL, Cho K, Cai T, and Liao KP
- Subjects
- Humans, Genetic Association Studies, Phenotype, Polymorphism, Single Nucleotide, Receptors, Interleukin-6 genetics, Diabetes Mellitus, Type 2 drug therapy, Diabetes Mellitus, Type 2 genetics
- Abstract
The Phenome-Wide Association Study (PheWAS) is increasingly used to broadly screen for potential treatment effects, e.g., IL6R variant as a proxy for IL6R antagonists. This approach offers an opportunity to address the limited power in clinical trials to study differential treatment effects across patient subgroups. However, limited methods exist to efficiently test for differences across subgroups in the thousands of multiple comparisons generated as part of a PheWAS. In this study, we developed an approach that maximizes the power to test for heterogeneous genotype-phenotype associations and applied this approach to an IL6R PheWAS among individuals of African (AFR) and European (EUR) ancestries. We identified 29 traits with differences in IL6R variant-phenotype associations, including a lower risk of type 2 diabetes in AFR (OR 0.96) vs EUR (OR 1.0, p-value for heterogeneity = 8.5 × 10
-3 ), and higher white blood cell count (p-value for heterogeneity = 8.5 × 10-131 ). These data suggest a more salutary effect of IL6R blockade for T2D among individuals of AFR vs EUR ancestry and provide data to inform ongoing clinical trials targeting IL6 for an expanding number of conditions. Moreover, the method to test for heterogeneity of associations can be applied broadly to other large-scale genotype-phenotype screens in diverse populations., (© 2024. This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply.)- Published
- 2024
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26. TCN-attention-HAR: human activity recognition based on attention mechanism time convolutional network.
- Author
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Wei X and Wang Z
- Subjects
- Humans, Knowledge, Learning, Privacy, Distillation, Human Activities
- Abstract
Wearable sensors are widely used in medical applications and human-computer interaction because of their portability and powerful privacy. Human activity identification based on sensor data plays a vital role in these fields. Therefore, it is important to improve the recognition performance of different types of actions. Aiming at the problems of insufficient time-varying feature extraction and gradient explosion caused by too many network layers, a time convolution network recognition model with attention mechanism (TCN-Attention-HAR) was proposed. The model effectively recognizes and emphasizes the key feature information. The ability of extracting temporal features from TCN (temporal convolution network) is improved by using the appropriate size of the receiver domain. In addition, attention mechanisms are used to assign higher weights to important information, enabling models to learn and identify human activities more effectively. The performance of the Open Data Set (WISDM, PAMAP2 and USC-HAD) is improved by 1.13%, 1.83% and 0.51%, respectively, compared with other advanced models, these results clearly show that the network model presented in this paper has excellent recognition performance. In the knowledge distillation experiment, the parameters of student model are only about 0.1% of those of teacher model, and the accuracy of the model has been greatly improved, and in the WISDM data set, compared with the teacher's model, the accuracy is 0.14% higher., (© 2024. The Author(s).)
- Published
- 2024
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27. Extend the benchmarking indel set by manual review using the individual cell line sequencing data from the Sequencing Quality Control 2 (SEQC2) project.
- Author
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Gong B, Li D, Zhang Y, Kusko R, Lababidi S, Cao Z, Chen M, Chen N, Chen Q, Chen Q, Dai J, Gan Q, Gao Y, Guo M, Hariani G, He Y, Hou W, Jiang H, Kushwaha G, Li JL, Li J, Li Y, Liu LC, Liu R, Liu S, Meriaux E, Mo M, Moore M, Moss TJ, Niu Q, Patel A, Ren L, Saremi NF, Shang E, Shang J, Song P, Sun S, Urban BJ, Wang D, Wang S, Wen Z, Xiong X, Yang J, Yin L, Zhang C, Zhang R, Bhandari A, Cai W, Eterovic AK, Megherbi DB, Shi T, Suo C, Yu Y, Zheng Y, Novoradovskaya N, Sears RL, Shi L, Jones W, Tong W, and Xu J
- Subjects
- Humans, Computational Biology, Quality Control, INDEL Mutation, Polymorphism, Single Nucleotide, Benchmarking, High-Throughput Nucleotide Sequencing
- Abstract
Accurate indel calling plays an important role in precision medicine. A benchmarking indel set is essential for thoroughly evaluating the indel calling performance of bioinformatics pipelines. A reference sample with a set of known-positive variants was developed in the FDA-led Sequencing Quality Control Phase 2 (SEQC2) project, but the known indels in the known-positive set were limited. This project sought to provide an enriched set of known indels that would be more translationally relevant by focusing on additional cancer related regions. A thorough manual review process completed by 42 reviewers, two advisors, and a judging panel of three researchers significantly enriched the known indel set by an additional 516 indels. The extended benchmarking indel set has a large range of variant allele frequencies (VAFs), with 87% of them having a VAF below 20% in reference Sample A. The reference Sample A and the indel set can be used for comprehensive benchmarking of indel calling across a wider range of VAF values in the lower range. Indel length was also variable, but the majority were under 10 base pairs (bps). Most of the indels were within coding regions, with the remainder in the gene regulatory regions. Although high confidence can be derived from the robust study design and meticulous human review, this extensive indel set has not undergone orthogonal validation. The extended benchmarking indel set, along with the indels in the previously published known-positive set, was the truth set used to benchmark indel calling pipelines in a community challenge hosted on the precisionFDA platform. This benchmarking indel set and reference samples can be utilized for a comprehensive evaluation of indel calling pipelines. Additionally, the insights and solutions obtained during the manual review process can aid in improving the performance of these pipelines., (© 2024. This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply.)
- Published
- 2024
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28. Author Correction: SLMO2 is a potential prognostic and immunological biomarker in human pan-cancer.
- Author
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Liu X, Yuan R, Peng J, Xu A, Nie X, Tang R, and Li G
- Published
- 2024
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29. Oxidation state of Cu in silicate melts at upper mantle conditions.
- Author
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Liu X, Zhang L, Zhu S, Li L, and Xiong X
- Abstract
Beyond its economic value, copper (Cu) serves as a valuable tracer of deep magmatic processes due to its close relationship with magmatic sulfide evolution and sensitivity to oxygen fugacity (fO
2 ). However, determining Cu's oxidation state (+ 1 or + 2) in silicate melts, crucial for interpreting its behavior and reconstructing fO2 in the Earth's interior, has long been a challenge. This study utilizes X-ray Absorption Near Edge Structure spectroscopy to investigate the Cu oxidation state in hydrous mafic silicate melts equilibrated under diverse fO2 (- 1.8 to 3.1 log units relative to the Fayalite-Magnetite-Quartz buffer), temperature (1150-1300 °C), and pressure (1.0-2.5 GPa) conditions. Our results reveal that Cu predominantly exists as Cu+ across all fO2 conditions, with a minor Cu2+ component. This dominance of Cu+ persists even in relatively oxidized melts, highlighting its limited sensitivity to fO2 under upper mantle conditions. This significantly constrains the utility of Cu as an oxybarometer in hydrous silicate melts in the deep Earth. However, our findings suggest that Cu isotopes primarily reflect the interplay of sulfide segregation/accumulation during magmatic differentiation, shedding light on these fundamental processes in Earth's interior., (© 2024. The Author(s).)- Published
- 2024
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30. Pan-cancer analysis reveals potential immunological and prognostic roles of METTL7A in human cancers.
- Author
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Wang B, Jiang J, Luo D, and Wang X
- Subjects
- Humans, Male, Prognosis, Breast Neoplasms diagnosis, Kidney Neoplasms diagnosis, Methyltransferases genetics, Methyltransferases metabolism, Prostatic Neoplasms diagnosis
- Abstract
Methyltransferase-like protein 7A (METTL7A) is an m6A RNA methyltransferase that has been linked to cancer prognosis and drug resistance. However, a comprehensive analysis of METTL7A is lacking. The expression of METTL7A, prognostic performance, correlation with microsatellite instability (MSI), tumor mutational burden (TMB), and immune infiltration was investigated in The Cancer Genome Atlas (TCGA). Immunohistochemistry staining was applied to detect METTL7A in 6 tumors. METTL7A was significantly decreased in 19 cancers in TCGA including LUAD. Alterations of METTL7A include amplification and mutation, and epigenetic alterations revealed increased promoter methylation may result in down-regulation of METTL7A in LUAD. We also found that METTL7A was linked to both TMB and MSI in LUAD. METTL7A was increasingly correlated with invasive immune cells, while being negatively associated with Macrophages M0, Mast cells activated, activated memory CD4 T cells, CD8 T cells, and follicular helper T cells in several tumors. Additionally, METTL7A showed similar correlation with immune therapy-related genes across cancers. Our biological validation found that the protein levels of METTL7A were down-regulated in breast cancer (BRCA), endometrioid cancer (UCEC), colon cancer (COAD), prostate cancer (PRAD), and kidney clear cell carcinoma (KIRC), as detected by immunohistochemistry staining. Overall, our work indicates that METTL7A may serve as promising diagnostic and prognostic indicator of LUAD, and our work sheds light on the potential immunological and prognostic roles of METTL7A in human cancers., (© 2024. The Author(s).)
- Published
- 2024
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31. PRKCSH serves as a potential immunological and prognostic biomarker in pan-cancer.
- Author
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Wang Q, Wang X, Li J, Yin T, Wang Y, and Cheng L
- Subjects
- Humans, Prognosis, Oncogenes, Carcinogenesis, Microsatellite Instability, Biomarkers, Calcium-Binding Proteins, Glucosidases, Neoplasms genetics
- Abstract
Protein kinase C substrate 80K-H (PRKCSH) plays a crucial role in the protein N-terminal glycosylation process, with emerging evidence implicating its involvement in tumorigenesis. To comprehensively assess PRKCSH's significance across cancers, we conducted a pan-cancer analysis using data from The Cancer Genome Atlas (TCGA), Genotype-Tissue Expression (GTEx), and Cancer Cell Line Encyclopedia (CCLE). We assessed aberrant PRKCSH mRNA and protein expression, examined its prognostic implications, and identified correlations with clinical features, tumor mutational burden (TMB), microsatellite instability (MSI), and tumor immunity across cancer types. We explored PRKCSH gene alterations, DNA methylation, and their impact on patient prognosis. Gene Set Enrichment Analysis (GSEA) and single-cell analysis revealed potential biological roles. Additionally, we investigated drug susceptibility and conducted Connectivity Map (Cmap) analysis. Key findings revealed that PRKCSH exhibited overexpression in most tumors, with a significant association with poor overall survival (OS) in six cancer types. Notably, PRKCSH expression demonstrated variations across disease stages, primarily increasing in advanced stages among eleven tumor types. Moreover, PRKCSH exhibited significant correlations with TMB in five cancer categories, MSI in eight, and displayed associations with immune cell populations in pan-cancer analysis. Genetic variations in PRKCSH were identified across 26 tumor types, suggesting favorable disease-free survival. Furthermore, PRKCSH methylation displayed a significant negative correlation with its expression in 27 tumor types, with a marked decrease compared to normal tissues in ten tumors. Cmap predicted 24 potential therapeutic small molecules in over four cancer types. This study highlights that PRKCSH, as a potential oncogene, may be a promising prognostic marker and therapeutic target of immunotherapy for a range of malignancies., (© 2024. The Author(s).)
- Published
- 2024
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32. SLMO2 is a potential prognostic and immunological biomarker in human pan-cancer.
- Author
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Liu X, Yuan R, Peng J, Xu A, Nie X, Tang R, and Li G
- Subjects
- Humans, Female, Prognosis, Biomarkers, Tumor genetics, Biological Transport, Tumor Microenvironment, Breast Neoplasms genetics, Lung Neoplasms genetics
- Abstract
SLMO2 is a lipid transporter that transports phosphatidylserine to the interior of mitochondria, also known as PRELID3B, which plays an important role in lipid metabolism. It has also been reported to be involved in the growth process of breast and lung tumors. However, its functions and underlying mechanisms in cancer progress remain elusive, and the potential as pan-cancer biomarker and therapeutic target remains unexplored. Using the TCGA project and GEO database, we performed pan-cancer analysis of SLMO2, which including the expression pattern, prognostic value, mutation landscape, methylation modification, protein-protein interaction network and the relationship between SLMO2 expression and immune infiltration. KEGG enrichment analysis was also performed to predict function and relevant cellular pathways of SLMO2. In addition, proliferation and migration assays were performed to detect the proliferation and metastasis capacity of breast cancer and lung cancer cells. In our study, we found that SLMO2 was overexpressed in pan-cancer and the elevated expression of SLMO2 was correlated with poorer prognosis. SLMO2 mutations were distributed in a variety of tumors and correlated with prognosis. Promoter methylation analysis showed that SLMO2 methylation levels were lower in most tumors compared with normal tissues, while a few tumors showed increased methylation levels of SLMO2. SLMO2 expression was also positively correlated with immune infiltration of MDSCs. Further pathway enrichment analysis indicated that SLMO2 was involved in regulating of cytoplasmic transport and other oncogenic processes. In vitro experiments have shown that SLMO2 promotes the proliferation and migration of breast cancer and lung cancer cells. In conclusion, our findings suggested that SLMO2 was a potential prognostic and immunological marker in pan-cancer. This study suggested a potential strategy for targeting SLMO2 to treat tumors, including manipulating tumor growth or the tumor microenvironment, especially the infiltration of MDSC., (© 2024. The Author(s).)
- Published
- 2024
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33. Research on evaluation index method of cloud-network convergence capability.
- Author
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Ma T, Chen Y, Wang H, Xiong X, and Zhao J
- Abstract
There is no measurable and evaluable index system for cloud-network convergence that provides guidance and reference for the subsequent construction and development of cloud-network convergence. It is a big project to select and evaluate the indexes of cloud-network convergence, which requires suitable index selection and index evaluation schemes. Based on analytic hierarchy process (AHP) and entropy weight method, this paper proposes an improved AHP (i-AHP) index selection scheme and index evaluation scheme leveraging the years of experts' experience, the geometric mean and the least square method. The improved weighted least square method (WLSM) is finally proved to be more stable for index evaluation scheme by adding abnormal data. In addition, the index weight obtained by the index evaluation scheme with WLSM are provided as a reference for the future development of cloud-network convergence. The simulation results show that the proposed scheme is superior to the existing index evaluation scheme and can avoid the weight deviation caused by the disturbance and fluctuation of abnormal data., (© 2023. The Author(s).)
- Published
- 2023
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34. Construction of ultrasonically treated collagen/silk fibroin composite scaffolds to induce cartilage regeneration.
- Author
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Yu S, Shu X, Chen L, Wang C, Wang X, Jing J, Yan G, Zhang Y, and Wu C
- Subjects
- Animals, Rabbits, Tissue Scaffolds chemistry, Collagen chemistry, Tissue Engineering methods, Fibroins pharmacology, Fibroins chemistry, Cartilage, Articular pathology
- Abstract
A novel tissue-specific functional tissue engineering scaffold for cartilage repair should have a three-dimensional structure, good biosafety and biological activity, and should be able to promote cartilage tissue regeneration. This study aimed to determine the effect of ultrasound-treated collagen/silk fibroin (Col/SF) composite scaffolds with good mechanical properties and high biological activity on cartilage repair. The characteristics of the scaffolds with different Col/SF ratios (7:3, 8:2, and 9:1) were determined by scanning electron microscopy, Fourier-transform infrared spectroscopy, and porosity, water absorption, and compression tests. In vitro evaluations revealed the biocompatibility of the Col/SF scaffolds. Results suggested that the optimal ratio of Col/SF composite scaffolds was 7:3. The Col/SF scaffolds induced adipose-derived stem cells to undergo chondrogenic differentiation under chondrogenic culture conditions. The efficiency of Col/SF scaffolds for cartilage regeneration applications was further evaluated using an in vivo model of full-thickness articular cartilage defects in New Zealand rabbits. The Col/SF scaffolds effectively promoted osteochondral regeneration as evidenced by macroscopic, histological, and immunohistochemical evaluation. The study demonstrates that ultrasound-treated Col/SF scaffolds show great potential for repairing cartilage defects., (© 2023. The Author(s).)
- Published
- 2023
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35. Association between needle track bleeding and postoperative immediate pneumothorax in CT-guided percutaneous transthoracic lung biopsies: a cross-sectional study.
- Author
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Zhou SQ, Luo F, Li K, Ran X, and Lv FR
- Subjects
- Humans, Male, Female, Cross-Sectional Studies, Retrospective Studies, Risk Factors, Lung diagnostic imaging, Lung pathology, Hemorrhage pathology, Tomography, X-Ray Computed, Image-Guided Biopsy adverse effects, Pneumothorax diagnostic imaging, Pneumothorax etiology, Pneumothorax epidemiology
- Abstract
The relationship between Needle Track Bleeding (NTB) and the occurrence of postoperative immediate pneumothorax remains unclear. In our cross-sectional study, we conducted a retrospective collected of data from 674 consecutive patients who underwent CT-guided percutaneous transthoracic lung biopsies between 2019 and 2022. A logistic regression model was employed to explore the association between NTB and postoperative immediate pneumothorax, and restricted cubic spline curves was used to investigate the link and its explicit curve shape. A sensitivity analysis was performed by transforming the continuous NTB into categorical variable and calculated an E-value. A total of 453 participants (47.90% male) were included in our analysis. The postoperative immediate pneumothorax rate was 41.05% (186/453). We found a negative correlation between NTB and postoperative immediate pneumothorax (OR = 0.91, 95%CI 0.88-0.95) after adjusting for confounding factors. This relationship was nonlinear, with a key inflection point at NTB of 8 mm. No significant link was noted for NTB > 8 mm (OR = 0.98, 95%CI 0.95-1.02), while a protective association was observed for NTB ≤ 8 mm (OR = 0.74, 95%CI 0.66-0.81). NTB showed a nonlinear, protective correlation with postoperative immediate pneumothorax. However, when NTB exceeded 8 mm, the protective association was not observed., (© 2023. The Author(s).)
- Published
- 2023
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36. No evident causal association between Helicobacter pylori infection and colorectal cancer: a bidirectional mendelian randomization study.
- Author
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Luo F, Zhou P, Ran X, Gu M, and Zhou S
- Subjects
- Humans, Genome-Wide Association Study, Mendelian Randomization Analysis, Seroepidemiologic Studies, Antibodies, Bacterial, Calgranulin A, Helicobacter Infections complications, Helicobacter pylori, Colorectal Neoplasms genetics
- Abstract
Observational studies have reported a correlation between Helicobacter pylori infection and colorectal cancer (CRC); however, the underlying cause has remained unclear. This research was aimed at determining whether there is a correlation between H. pylori infection and CRC by measuring the prevalence of H. pylori CagA antibodies and VacA antibodies. Using data from many genome-wide association studies (GWAS), we conducted a Mendelian randomization (MR) study with two sample GWAS. Then, we used bidirectional MR to evaluate the association between H. pylori infection and CRC for identifying causation. The most common method of analysis was the inverse variance-weighted technique. In addition, we performed supplementary analyses using the weighted median technique and MR-Egger regression. Horizontal pleiotropic outliers were identified and corrected using the MR Pleiotropy RESidual Sum and Outlier (MR-PRESSO) method. Genetically predicted anti-H. pylori IgG seropositivity was not causally associated with CRC [odds ratio (OR): 1.12; 95% confidence interval (CI): 0.98-1.27, P = 0.08] and neither were H. pylori VacA antibody levels (OR = 0.96, 95% CI: 0.90-1.02, P = 0.25) or H. pylori CagA antibody levels (OR = 1.00, 95% CI: 0.93-1.07, P = 0.92). Furthermore, reverse MR analysis did not reveal evidence for a causal effect of CRC on H. pylori infection. The weighted median, the MR-Egger method, and MR-PRESSO yielded identical results. Using genetic data, MR analysis showed there was no evidence for a causal association between seroprevalence of H. pylori infection and CRC. The relationship between H. pylori infection and CRC requires further research., (© 2023. The Author(s).)
- Published
- 2023
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37. The disulfidptosis-related signature predicts prognosis and immune features in glioma patients.
- Author
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Wang X, Yang J, Yang F, and Mu K
- Subjects
- Humans, Central Nervous System, Chromosome Mapping, Prognosis, Apoptosis, Tumor Microenvironment genetics, Glioma genetics
- Abstract
Glioma is the most common primary malignant tumor in the central nervous system. Disulfidptosis is a recently identified programmed cell death in tumor cells overexpressing SLC7A11 under glucose starvation. Clinical prognostic significance of disulfidptosis has been reported in several tumors, and in this study, we explored the correlation of disulfidptosis with clinical prognosis, immune cell infiltration, and immunotherapy response in glioma. A total of 1592 glioma patients were included in this study, including 691 glioma patients from The Cancer Genomic Atlas (TCGA), 300 patients with from the Chinese Glioma Genomic Atlas (CGGA) array, 325 patients from CGGA sequencing, and 276 patients from Gene Expression Omnibus (GEO) GSE16011. R software (V4.2.2) and several R packages were applied to develop the risk score model and correlation calculation and visualization. Three disulfidptosis-related genes, LRPPRC, RPN1, and GYS1, were screened out and applied to establish the risk score model. Low-risk patients exhibit favorable prognosis, and the disulfidptosis-related signature significantly correlated with clinicopathological properties, molecular subtypes, and immunosuppressive microenvironment of glioma patients. We developed a disulfidptosis-related risk model to predict the prognosis and immune features in glioma patients, and this risk model may be applied as an independent prognostic factor for glioma., (© 2023. Springer Nature Limited.)
- Published
- 2023
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38. Safety and environmental impact control of cross passage construction in soft soil strata using tunnel boring machine method.
- Author
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Yunkang M, Wei Y, Yanjie S, Meiqin Z, Sheng Z, Tianfang X, Jia G, Xiaofan L, and Xuesong C
- Abstract
The construction of cross passages using the tunnel boring machine (TBM) method represents an emerging construction technique with numerous advantages. However, owing to the scarcity of application instances, the safety control methodologies and the regulatory patterns concerning environmental impacts remain inconclusive. In this study, a cross passage excavated using the TBM method-the first of its kind in the Tianjin area-was investigated. We identified the key risk control measures for the construction and analysed the TBM operating parameters, monitored ground and building settlements, and monitored mainline tunnel deformations and mechanical responses, revealing the ground and tunnel structure deformation patterns. The following conclusions are drawn. (1) The ground surrounding the cross-passage break-out opening was stabilised by performing secondary grouting and small-range freezing, and the break-in opening was excavated using a completely enclosed steel sleeve. These measures prevented water and sand inflows during the excavation of the break-out and break-in openings in the silt and silty sand strata. (2) The torsional moment of the cutter disc was large during the break-out phase. Break-out mainline tunnel displacement monitoring data indicated that the thrust had a significant effect on the mainline tunnel during the break-out phase. (3) The TBM tunnelling caused ground loss. The ground settlement exhibited a U-shaped distribution along the cross-passage axis, with the maximum settlement being 10 mm. (4) During the break-out phase, the deformation of the break-out mainline tunnel exhibited a duck-egg-shaped distribution. The clearance convergence of the break-out mainline tunnel was within ± 4, and the clearance convergence of the break-in mainline tunnel was controlled within ± 1 mm., (© 2023. Springer Nature Limited.)
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- 2023
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39. SAR image matching based on rotation-invariant description.
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Chang Y, Xu Q, Xiong X, Jin G, Hou H, and Man D
- Abstract
The utilization of scale invariant feature transform algorithm in synthetic-aperture radar images (SAR-SIFT) to match image features may lead to principal orientation assignments of descriptors being affected by speckle noise, thereby diminishing accuracy. In this study, we propose using the Fourier histogram of oriented ratio gradient (Fourier HORG) descriptor for robust matching of SAR images. This method is based on the SAR-SIFT algorithm framework. During feature description, the rotation-invariant Fourier HORG descriptor is established by performing Fourier analysis on the ratio gradient in the polar coordinate system, whereby the principal orientation assignment process is avoided and the robustness of SAR image registration improved. A matching experiment was conducted involving four sets of SAR image pairs, and the results demonstrated that our method exhibited higher accuracy and robustness compared to image matching based on the Fourier histogram of oriented gradient (Fourier HOG) descriptor and the SAR-SIFT algorithm, thus confirming the effectiveness of our proposed method., (© 2023. Springer Nature Limited.)
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- 2023
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40. A bioinformatics approach to identify a disulfidptosis-related gene signature for prognostic implication in colon adenocarcinoma.
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Hu G, Yao H, Wei Z, Li L, Yu Z, Li J, Luo X, and Guo Z
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- Humans, Prognosis, Computational Biology, Tumor Microenvironment genetics, Transcription Factors, Adaptor Proteins, Signal Transducing, LIM Domain Proteins, Colonic Neoplasms genetics, Adenocarcinoma genetics
- Abstract
Colon adenocarcinoma (COAD) is a type of cancer that arises from the glandular epithelial cells that produce mucus in the colon. COAD is influenced by various factors, including genetics, environment and lifestyle. The outcome of COAD is determined by the tumor stage, location, molecular characteristics and treatment. Disulfidptosis is a new mode of cell death that may affect cancer development. We discovered genes associated with disulfidptosis in colon adenocarcinoma and proposed them as novel biomarkers and therapeutic targets for COAD. We analyzed the mRNA expression data and clinical information of COAD patients from The Cancer Genome Atlas (TCGA) database and Xena databases, extracted disulfidptosis-related genes from the latest reports on disulfidptosis. We used machine learning to select key features and build a signature and validated the risk model using data from the Gene Expression Omnibus (GEO) database and Human Protein Atlas (HPA). We also explored the potential biological functions and therapeutic implications of the disulfidptosis-related genes using CIBERSORTx and GDSC2 databases. We identified four disulfidptosis-related genes: TRIP6, OXSM, MYH3 and MYH4. These genes predicted COAD patient survival and modulated the tumor microenvironment, drug sensitivity and immune microenvironment. Our study reveals the importance of disulfidptosis-related genes for COAD prognosis and therapy. Immune infiltration and drug susceptibility results provide important clues for finding new personalized treatment options for COAD. These findings may facilitate personalized cancer treatment., (© 2023. The Author(s).)
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- 2023
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41. Optimization and prediction of the cotton fabric dyeing process using Taguchi design-integrated machine learning approach.
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Pervez MN, Yeo WS, Lin L, Xiong X, Naddeo V, and Cai Y
- Abstract
The typical textile dyeing process calls for a wide range of operational parameters, and it has always been difficult to pinpoint which of these qualities is the most important in dyeing performance. Consequently, this research used a combined design of experiments and machine learning prediction models' method to offer a sustainable and beneficial reactive cotton fabric dyeing process. To be more precise, we built a least square support vector regression (LSSVR) model based on Taguchi's statistical orthogonal design (L
27 ) to predict exhaustion percentage (E%), fixation rate (F%), and total fixation efficiency (T%) and color strength (K/S) in the reactive cotton dyeing process. The model's prediction accuracy was assessed using many measures, including root mean square error (RMSE), mean absolute error (MAE), and the coefficient of determination (R2 ). Principal component regression (PCR), partial least square regression (PLSR), and fuzzy modelling were some of the other types of regression models used to compare results. Our findings reveal that the LSSVR model greatly outperformed competing models in predicting the E%, F%, T%, and K/S. This is shown by the LSSVR model's much smaller RMSE and MAE values. Overall, it provided the highest possible R2 values, which reached 0.9819., (© 2023. The Author(s).)- Published
- 2023
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42. UQCRFS1 serves as a prognostic biomarker and promotes the progression of ovarian cancer.
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Sun Q, Li J, Dong H, Zhan J, Xiong X, Ding J, Li Y, He L, and Wang J
- Subjects
- Humans, Female, Prognosis, Cell Line, Tumor, Reactive Oxygen Species, Biomarkers, Ovarian Neoplasms, Iron-Sulfur Proteins
- Abstract
UQCRFS1 has been reported to be highly expressed in gastric and breast cancer, but the mechanism remains unclear. The prognosis and biological functions of UQCRFS1 in ovarian cancer (OC) have not been evaluated. The expression of UQCRFS1 in EOC was detected by GEPIA and HPA websites, and the prognosis value was investigated by Kaplan-Meier analysis. Then the correlation between the UQCRFS1 gene and tumor-related signature were analyzed by Spearman correlation analysis and rank sum test. Subsequently, the expression of the UQCRFS1 gene in four ovarian cancer cell lines was detected. A2780 and OVCAR8 with the highest expression of UQCRFS1 were selected in the following biological experiments. Cell proliferation was detected by CCK8 assay, cell cycle and apoptosis were determined by flow cytometry, reactive oxygen species (ROS) production was detected by DCFH-DA, DNA damage gene mRNA expression was analyzed by RT-PCR, and AKT/mTOR pathway protein expression were also examined by western blot after siRNA transfection. We found that UQCRFS1 was high-expression in EOC and associated with poor prognosis. Spearman correlation analysis revealed that the high expression of UQCRFS1 is associated with the cell cycle, apoptosis, oxidative phosphorylation, and DNA damage. Further studies found that knockdown of UQCRFS1 cells reduced cell proliferation, cell cycle arrest at the G1 phase, increased proportion of apoptosis, ROS production, and expression of DNA damage genes, inhibited ATK/mTOR pathway. The study suggested that UQCRFS1 may be a candidated target for diagnosis and treatments in OC., (© 2023. The Author(s).)
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- 2023
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43. Assessment of the impacts of climat change on water supply system pipe failures.
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Fan X, Zhang X, Yu A, Speitel M, and Yu X
- Abstract
Climate change is projected to have profound impacts on the resilience and sustainability of built infrastructure. This study aims to understand the impacts of climate change on water supply systems and to facilitate adaptive actions. A premium database maintained by the Cleveland Water Division, Cleveland, Ohio, USA is analyzed. It contains 29,621 pipe failure records of 51,832 pipes over the past 30 years, representing one of the largest dataset in current literature. From the database, pipe failure rate models have been developed for water pipes made of different types of materials at different ages. The influence of climate (temperature and precipitation) on fragility of water pipes are obtained. Based on the developed climate-fragility failure rate models, the impacts of climate change on the water systems located in different geographic regions are evaluated by predicting the failure rate and number of failures in the water systems in the next 80 years (2020 to 2100). Climate models are used to predict weather under different climate change scenarios. The results demonstrate that the impacts of climate change on water supply system are likely complicated and are dependent upon factors such as the geographic location, pipe material, pipe age, and maintenance strategies. Water pipes in the cold regions may experience fewer number breaks due to the warmer weather and less severe winter, whereas those located in the hot regions may experience more failures associated with more corrosion. Different pipe replacement strategies are compared, which demonstrate the importance of considering the aging of water supply system in future maintenance decisions. This study enriches current understandings on the impacts of climate change on the water systems. The results will help water utilities to design climate change adaptation strategies., (© 2023. The Author(s).)
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- 2023
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44. Effects of waterlogging at different growth stages on the photosynthetic characteristics and grain yield of sorghum (Sorghum bicolor L.).
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Zhang R, Yue Z, Chen X, Huang R, Zhou Y, and Cao X
- Subjects
- Plant Leaves chemistry, Chlorophyll analysis, Ribulose-Bisphosphate Carboxylase analysis, Phosphoenolpyruvate Carboxylase analysis, Photosynthesis, Biomass, Agriculture methods, Sorghum growth & development, Climate Change
- Abstract
Various plants, including sorghum (Sorghum bicolor L.), are exposed to waterlogging; however, little is known about the effects of waterlogging at different growth stages on sorghum. A pot experiment was conducted using two sorghum hybrids, Jinuoliang 01 (JN01) and Jinza 31 (JZ31), to investigate the effects of waterlogging at different growth stages on the photosynthesis enzyme activity, chlorophyll content, malondialdehyde (MDA) content, photosynthetic parameters, dry matter accumulation, and grain yield. The experiment was conducted using waterlogging treatments implemented at the five-leaf stage (T1), flowering stage (T2), and filling stage (T3), using standard management (no waterlogging) as a control (CK). The adverse effects of waterlogging on sorghum growth varied with the waterlogging timing, with the maximum impact at T1, followed by T2 and T3. JZ31 was more sensitive to waterlogging compared to JN01. Waterlogged conditions inhibited the photosynthetic enzyme activity and reduced the chlorophyll content and photosynthesis, ultimately lowering the biomass yield and grain yield. The maximum yield loss was observed with the T1 waterlogging treatment; the grain yield of JN01 and JZ31 decreased by 52.01-54.58% and 69.52-71.97%, respectively, compared with CK. Furthermore, the decline in grain yield in T1 was associated with reducing grain number per panicle. These findings indicate that sorghum is sensitive to waterlogging at the five-leaf stage and JZ31 is more sensitive to waterlogging than JN01, which may provide a basis for selecting genotypes and management measures to cope with waterlogging in sorghum., (© 2023. The Author(s).)
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- 2023
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45. Publisher Correction: Association between high-mobility group box 1 levels and febrile seizures in children: a systematic review and meta-analysis.
- Author
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Li S, Zhao Q, Sun J, Yan W, Wang J, Gao X, Li X, Ren C, and Hao L
- Published
- 2023
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46. A spectral preserved model based on spectral contribution and dependence with detail injection for pansharpening.
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Wu L, Jiang X, Peng J, Wu G, and Xiong X
- Abstract
Pansharpening integrates the high spectral content of multispectral (MS) images and the fine spatial information of the corresponding panchromatic (PAN) images to produce a high spectral-spatial resolution image. Traditional pansharpening methods compensate for the spatial lack of the MS image using the PAN image details, which easily causes spectral distortion. To achieve spectral fidelity, a spectral preservation model based on spectral contribution and dempendence with detail injection for pansharpening is proposed. In the proposed model, first, an efficacy coefficient (CE) based on the spatial difference between the MS and PAN images is designed to suppress the impact of the detail injection on the spectra. Second, the spectral contribution and dependence (SCD) between the MS bands and pixels are considered to strengthen the internal adaptation of the spectra. Finally, a spectrally preserved model based on CE and SCD is designed to force the fused image fidelity in spectra when the MS image is pansharpened with the details of the PAN image. Experimental results show that the proposed model is effective., (© 2023. The Author(s).)
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- 2023
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47. PCSK9, a novel immune and ferroptosis related gene in abdominal aortic aneurysm neck.
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Zhuang J, Zhu H, Cheng Z, Hu X, Yu X, Li J, Liu H, Tang P, Zhang Y, Xiong X, and Deng H
- Subjects
- Humans, Cholesterol, Cholesterol, LDL, CTLA-4 Antigen, Aortic Aneurysm, Abdominal genetics, Ferroptosis genetics, Proprotein Convertase 9 genetics, Proprotein Convertase 9 metabolism
- Abstract
The gene expression profile of abdominal aortic aneurysm (AAA) neck is not fully understood. The etiology of AAA is considered to be related to atherosclerosis and the inflammatory response, involving congenital, genetic, metabolic, and other factors. The level of proprotein convertase subtilisin/kexin type 9 (PCSK9) is related to those of cholesterol, oxidized low-density lipoprotein, and triglycerides. PCSK9 inhibitors have significant effects on lowering LDL-cholesterol, reversing atherosclerotic plaques, and reducing the risk of cardiovascular events and have been approved by several lipid-lowering guidelines. This work was aimed to investigate the potential role of PCSK9 in the neck of AAA. We extracted the expression dataset (GSE47472) containing 14 AAA patients and 8 donors and single-cell RNAseq (scRNA-seq) data (GSE164678) of CaCl
2 -induced (AAA) samples from the Gene Expression Omnibus dataset. Through bioinformatics methods, we found that PCSK9 was up-regulated in the proximal neck of human AAA. In AAA, PCSK9 was mainly expressed in fibroblasts. Additionally, immune check-point PDCD1LG2 was also expressed higher in AAA neck than donor, while CTLA4, PDCD1, and SIGLEC15 were down-regulated in AAA neck. The expression of PCSK was correlated with PDCD1LG2, LAG3, and CTLA4 in AAA neck. Additionally, some ferroptosis-related genes were also down-regulated in AAA neck. PCSK9 was also correlated with ferroptosis-related genes in AAA neck. In conclusion, PCSK9 was highly expressed in AAA neck, and may exert its role through interacting with immune check-points and ferroptosis-related genes., (© 2023. The Author(s).)- Published
- 2023
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48. Association between high-mobility group box 1 levels and febrile seizures in children: a systematic review and meta-analysis.
- Author
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Li S, Zhao Q, Sun J, Yan W, Wang J, Gao X, Li X, Ren C, and Hao L
- Subjects
- Humans, Child, Fever, Databases, Factual, Gene Library, Seizures, Febrile, HMGB1 Protein
- Abstract
The relationship between High-mobility group box 1 (HMGB1) and febrile seizures (FS) in children remains unclear. This study aimed to apply meta-analysis to reveal the correlation between HMGB1 levels and FS in children. Databases including PubMed, EMBASE, Web of science, Cochrane library, CNKI, SinoMed and WanFangData were searched for relevant studies. Pooled standard mean deviation and 95% confidence interval were calculated as effect size since the random-effects model was used when I
2 > 50%. Meanwhile, between-study heterogeneity was determined by performing subgroup and sensitivity analyses. A total of 9 studies were finally included. Meta-analysis showed that the children with FS had significantly higher HMGB1 levels compared with healthy children and children with fever but no seizures (P<0.05). Additionally, subgroup analysis showed that the HMGB1 level in children with complex FS was higher than those with simple FS (P<0.05), and children with duration >15 min were higher than those with duration ≤15min (P<0.05). There were no statistical differences between children with or without a family history of FS (P>0.05). Finally, children with FS who converted to epilepsy exhibited higher HMGB1 levels than those who did not convert to epilepsy (P<0.05). The level of HMGB1 may be implicated in the prolongation, recurrence and development of FS in children. Thus, it was necessary to evaluate the precise concentrations of HMGB1 in FS patients and to further determine the various activities of HMGB1 during FS by well-designed, large-scale, and case-controlled trials., (© 2023. The Author(s).)- Published
- 2023
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49. On the identification of internal solitary waves from moored observations in the northern South China Sea.
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Gong Q, Chen L, Diao Y, Xiong X, Sun J, and Lv X
- Abstract
Based on the temperature data recorded by a mooring system deployed in the northern South China Sea (SCS), this study compares the traditional methods of identifying and extracting internal solitary waves (ISWs): the whole water column isotherm (WCI) method and the single isotherm (SI) method, and proposes a novel method: the temperature superposition (TS) method. Results indicate that the TS method identifies the most ISWs, followed by the WCI method, and the SI method identifies the fewest. When the ISW amplitudes are smaller than 60 m, the TS method can identify the most ISWs. When the ISW amplitudes are greater than 60 m, the number of ISWs identified by the three methods is the same. The TS method removes the internal tides, takes into account the temperature of all depth layers, and amplifies the signal of ISWs to a certain extent, so as to effectively identify ISWs., (© 2023. The Author(s).)
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- 2023
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50. Observation of near-inertial waves in the wake of four typhoons in the northern South China Sea.
- Author
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Gong Q, Wang Q, Chen L, Diao Y, Xiong X, Sun J, and Lv X
- Abstract
Based on the velocity and temperature data recorded by two acoustic Doppler current profilers (ADCPs) at a mooring system deployed in the northern South China Sea (SCS), this study investigates the characteristics of near-inertial waves (NIWs) induced by typhoons Bebinca, Barijat, Mangkhut and Yutu in 2018. For the dynamical response, besides the motion of near inertial frequency induced by typhoons, the motion of 2 f ([1.80-2.20] f, f is the local inertial frequency) and f D
1 (a harmonic wave with a frequency equal to the sum of frequencies of NIWs and diurnal tides) frequency will also increase. For near-inertial motions, the maximum near-inertial kinetic energy (NIKE) is confined to depths above 150 m. For stronger (weaker) wind forcing, the longer (shorter) the response time of the ocean to the atmospheric forcing is, and the shorter (longer) the response time is required in relaxation stage. There are upward and downward propagating energies after the passage of typhoons, and the upward propagating energy mainly occur in the stage of the geostrophic balance adjustment. The current structure suggests that the NIWs in the vertical direction are two antisymmetric rotary vortices in a near-inertial period, which is similar to the structure of the Langmuir circulation. Besides, the horizontal near-inertial currents (NICs) are much stronger than the vertical NICs, and the stronger the NIWs are, the stronger the horizontal NICs relative to the vertical NICs are. For the temperature response, the temperature variation reflects a clear stratified vertical structure. In the forcing stage, the upper layer becomes colder, the lower layer becomes warmer, and the thickness and intensity of the thermocline decrease. In the relaxation stage, the upper layer warms and the lower layer cools, and the thickness and intensity of thermocline increase., (© 2023. The Author(s).)- Published
- 2023
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- View/download PDF
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