31,980 results on '"Bo, Li"'
Search Results
2. Strong gravitational lensing in a Kerr black hole within Quantum Einstein Gravity
- Author
-
Xie, Chen-Hao, Zhang, Yu, Liu, Bo-Li, Duan, Peng-Fei, and Lou, Yu-Li
- Subjects
General Relativity and Quantum Cosmology - Abstract
The detailed study of the strong gravitational lensing of a Kerr black hole within Quantum Einstein Gravity (QEG) is performed. We calculate the photon sphere, the deflection angle of light, and observables on the equatorial plane under the strong deflection limit in a vacuum. The presence of quantum effects reduces the radius of the photon sphere, the magnification, the position of relativistic images, and the time delays on the same side of the lens. However, it increases the strong deflection angle, the separations, and the time delays on the opposite side of the lens. By modeling M87* and Sgr A* as the Kerr black hole within QEG, we find that the time delays are more significant in M87*, while other observables are more pronounced in Sgr A*. Furthermore, we consider the influence of plasma on the gravitational lensing effect. Plasma causes an additional deflection of light, increasing the magnification, images position and the time delays, but decreasing the separations. More importantly, we calculate the time delays under the strong deflection limit in the presence of plasma, and they increase with higher plasma concentrations. Our research may help to evaluate the observational imprints left by such quantum effects in the propagation of light and the impact of plasma around black holes on gravitational lensing., Comment: 15 pages, 15 figures
- Published
- 2024
3. Half Title, Series Page, Title Page, Copyright
- Author
-
Ling, L.H.M., Abdenur, Adriana Erthal, Banerjee, Payal, Kurian, Nimmi, Lama, Mahendra P., and Bo, Li
- Published
- 2016
4. Cover
- Author
-
Ling, L.H.M., Abdenur, Adriana Erthal, Banerjee, Payal, Kurian, Nimmi, Lama, Mahendra P., and Bo, Li
- Published
- 2016
5. Index
- Author
-
Ling, L.H.M., Abdenur, Adriana Erthal, Banerjee, Payal, Kurian, Nimmi, Lama, Mahendra P., and Bo, Li
- Published
- 2016
6. Author Biographies
- Author
-
Ling, L.H.M., Abdenur, Adriana Erthal, Banerjee, Payal, Kurian, Nimmi, Lama, Mahendra P., and Bo, Li
- Published
- 2016
7. Bibliography
- Author
-
Ling, L.H.M., Abdenur, Adriana Erthal, Banerjee, Payal, Kurian, Nimmi, Lama, Mahendra P., and Bo, Li
- Published
- 2016
8. Maps
- Author
-
Ling, L.H.M., Abdenur, Adriana Erthal, Banerjee, Payal, Kurian, Nimmi, Lama, Mahendra P., and Bo, Li
- Published
- 2016
9. Conclusion: What’s Ahead: India-China in the World
- Author
-
Ling, L.H.M., Abdenur, Adriana Erthal, Banerjee, Payal, Kurian, Nimmi, Lama, Mahendra P., and Bo, Li
- Published
- 2016
10. Chapter 4. Dialogue across Borders: Dam Projects in Yunnan and Sikkim
- Author
-
Ling, L.H.M., Abdenur, Adriana Erthal, Banerjee, Payal, Kurian, Nimmi, Lama, Mahendra P., and Bo, Li
- Published
- 2016
11. Chapter 3. Subregionalizing IR: Bringing the Borderlands Back In
- Author
-
Ling, L.H.M., Abdenur, Adriana Erthal, Banerjee, Payal, Kurian, Nimmi, Lama, Mahendra P., and Bo, Li
- Published
- 2016
12. Chapter 2. Borders as Opportunities: Changing Matrices in Northeast India and Southwest China
- Author
-
Ling, L.H.M., Abdenur, Adriana Erthal, Banerjee, Payal, Kurian, Nimmi, Lama, Mahendra P., and Bo, Li
- Published
- 2016
13. Chapter 5. Border Pathology: Ayurveda and Zhongyi as Therapeutic Strategies
- Author
-
Ling, L.H.M., Abdenur, Adriana Erthal, Banerjee, Payal, Kurian, Nimmi, Lama, Mahendra P., and Bo, Li
- Published
- 2016
14. Acknowledgments
- Author
-
Ling, L.H.M., Abdenur, Adriana Erthal, Banerjee, Payal, Kurian, Nimmi, Lama, Mahendra P., and Bo, Li
- Published
- 2016
15. Foreword
- Author
-
Ling, L.H.M., Abdenur, Adriana Erthal, Banerjee, Payal, Kurian, Nimmi, Lama, Mahendra P., and Bo, Li
- Published
- 2016
16. Introduction: What’s Not There: India-China
- Author
-
Ling, L.H.M., Abdenur, Adriana Erthal, Banerjee, Payal, Kurian, Nimmi, Lama, Mahendra P., and Bo, Li
- Published
- 2016
17. Chapter 1. Trans-Himalayas: From the Silk Road to World War II
- Author
-
Ling, L.H.M., Abdenur, Adriana Erthal, Banerjee, Payal, Kurian, Nimmi, Lama, Mahendra P., and Bo, Li
- Published
- 2016
18. Downlink AP coordination based OFDMA and NOMA protocols for the next-generation WLANs
- Author
-
Zhenzhen, Yan, Bo, Li, Mao, Yang, and Zhongjiang, Yan
- Published
- 2024
- Full Text
- View/download PDF
19. Heterogeneity of absorbed dose distribution in kidney tissues and dose–response modelling of nephrotoxicity in radiopharmaceutical therapy with beta-particle emitters: A review
- Author
-
Clarita Saldarriaga Vargas, Michelle Andersson, Céline Bouvier-Capely, Wei Bo Li, Balázs Madas, Peter Covens, Lara Struelens, and Lidia Strigari
- Subjects
Absorbed dose heterogeneity ,Radiopharmaceutical therapy ,Kidney dosimetry ,Dose–response modelling ,Normal tissue complication probability (NTCP) ,Biophysical modelling ,Medical physics. Medical radiology. Nuclear medicine ,R895-920 - Abstract
Absorbed dose heterogeneity in kidney tissues is an important issue in radiopharmaceutical therapy. The effect of absorbed dose heterogeneity in nephrotoxicity is, however, not fully understood yet, which hampers the implementation of treatment optimization by obscuring the interpretation of clinical response data and the selection of optimal treatment options. Although some dosimetry methods have been developed for kidney dosimetry to the level of microscopic renal substructures, the clinical assessment of the microscopic distribution of radiopharmaceuticals in kidney tissues currently remains a challenge. This restricts the anatomical resolution of clinical dosimetry, which hinders a thorough clinical investigation of the impact of absorbed dose heterogeneity. The potential of absorbed dose–response modelling to support individual treatment optimization in radiopharmaceutical therapy is recognized and gaining attraction. However, biophysical modelling is currently underexplored for the kidney, where particular modelling challenges arise from the convolution of a complex functional organization of renal tissues with the function-mediated dose distribution of radiopharmaceuticals. This article reviews and discusses the heterogeneity of absorbed dose distribution in kidney tissues and the absorbed dose–response modelling of nephrotoxicity in radiopharmaceutical therapy. The review focuses mainly on the peptide receptor radionuclide therapy with beta-particle emitting somatostatin analogues, for which the scientific literature reflects over two decades of clinical experience. Additionally, detailed research perspectives are proposed to address various identified challenges to progress in this field.
- Published
- 2024
- Full Text
- View/download PDF
20. Dual‐state and self‐oscillating wireless charging system topology for direct‐drive battery
- Author
-
Bo Li, Bao Zhang, and Kai Xie
- Subjects
battery chargers ,electric current control ,electromagnetic coupling ,power conversion ,transformers ,Electronics ,TK7800-8360 - Abstract
Abstract This study proposes a novel topology with bi‐stable controlling for wireless charging system (WCS). The advantage of the proposal is that a desired charging current can be directly output from rectifier without requiring charging current manager, thereby greatly simplifying the structure of the receiver. The proposed topology not only improves the transmission efficiency of system, but also reduces the loss and heat dissipation in the receiver. The principle of the topology is outlined and the circuitry model and control strategy are established and analyzed in detail. The innovation of this method lies in treating the coupler as a current transformer, which enables more direct and simpler controlling of the charging current. The experiment is conducted to verify that when the peak charging current is increased from 5A to 10A, the system efficiency is increased up to 82.0% and the receiver efficiency up to 96.7%. Both computational simulation and experimental validation have confirmed the feasibility of the proposed method. Compared with conventional WCS topology with compensation, the proposed method improves the system efficiency by 3% and the receiver efficiency by 5%, which is more suitable for practical applications where compact and light‐weight receiver is required.
- Published
- 2024
- Full Text
- View/download PDF
21. Progressive myoclonic ataxia as an initial symptom of typical type I sialidosis with NEU1 mutation
- Author
-
Jingjing Lin, Yun‐Lu Li, Bo‐Li Chen, Hui‐Zhen Su, Yi‐Heng Zeng, Rui‐Huang Zeng, Yu‐Duo Zhang, Ru‐Kai Chen, Nai‐Qing Cai, Yi‐Kun Chen, Ru‐Ying Yuan, Jun‐Yi Jiang, Xiang‐Ping Yao, Ning Wang, Wan‐Jin Chen, and Kang Yang
- Subjects
Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Objective Expand genetic screening for atypical Type I sialidosis (ST‐1) could address its underdiagnosed in both progressive myoclonic ataxia (PMA) and ataxia patients. To evaluate the potential founder effect of mutation in the population. Methods We enrolled 231 patients with PMA or ataxia from the First Affiliated Hospital of Fujian Medical University. Through Whole Exome Sequencing and Sanger sequencing, we identified the causative gene in patients. Haplotype analysis was employed to explore a potential founder effect of the NEU1 c.544A>G mutation. Results A total of 31 patients from 23 unrelated families were genetically diagnosed with ST‐1. A significant 80.6% of these patients were homozygous for the c.544A>G mutation. We discovered six different NEU1 variants, including two novel mutations: c.951_968del and c.517T>G. The mean age of onset was 18.0 ± 7.1 years. The clinical spectrum of ST‐1 featured ataxia and myoclonus as the most common initial symptoms. Over 40% suffered from controlled generalized tonic–clonic seizures. Mobility and independence varied greatly across the cohort. Cherry‐red spots were rare, occurring in just 9.5% (2/21) of patients. Brain MRIs were typically unremarkable, except for two patients with unusual findings. EEGs showed diffuse paroxysmal activity in 17 patients. The c.544A>G mutation in NEU1 is a founder variant in Fujian, with a unique haplotype prevalent in East Asians. Interpretation ST‐1 should be suspected in patients with PMA or ataxia in Southeast China, even without macular cherry‐red spots and seizures, and the premier test could be a variant screening of the founder variant NEU1 c.544A>G.
- Published
- 2024
- Full Text
- View/download PDF
22. High-resolution multi-source traffic data in New Zealand
- Author
-
Bo Li, Ruotao Yu, Zijun Chen, Yingzhe Ding, Mingxia Yang, Jinghua Li, Jianxiao Wang, and Haiwang Zhong
- Subjects
Science - Abstract
Abstract Traffic information is crucial for managing transportation and city planning, but obtaining national-scale data is difficult due to privacy concerns. Consequently, most current traffic datasets have limitations in terms of time and location coverage, leading to a lack of comprehensive public access to national traffic data. To address this issue, a multi-source highway traffic dataset has been created, featuring 2042 sensors in New Zealand over a 9-year period with 15-minute intervals and accompanying metadata. The dataset includes data of both light-duty and heavy-duty vehicles, as well as weather information like temperature and precipitation. This dataset has diverse potential research applications such as traffic flow prediction and congestion management.
- Published
- 2024
- Full Text
- View/download PDF
23. Mechanism of action of Nrf2 and its related natural regulators in rheumatoid arthritis
- Author
-
Ke Ma, Lili Miao, Bo Li, Wenfei Yu, Fengzhao Liu, Kun Liu, Yang Li, Chengcheng Huang, and Zhenguo Yang
- Subjects
Rheumatoid arthritis ,Nrf2 ,Natural products ,Oxidative stress ,Inflammation ,Autophagy ,Orthopedic surgery ,RD701-811 ,Diseases of the musculoskeletal system ,RC925-935 - Abstract
Abstract Rheumatoid arthritis (RA) is an autoimmune disease characterized by synovitis that can lead to joint deformities. To date, more than 18 million individuals worldwide have been diagnosed with RA, making it one of the most prevalent autoimmune diseases globally and posing a significant threat to public health and safety. Due to the complex pathogenesis of the disease, which involves autoimmunity, genetics, inflammation and oxidative stress in the body’s tissues, the current drug therapy generally targets a single molecule, and effective and efficient drugs involving multiple levels and targets are lacking; thus, there is an urgent need for high-quality research and treatment in this field. Nuclear transcription factor erythroid 2-associated factor 2 (Nrf2) plays a crucial role in cellular resistance to oxidative stress and electrophilic attacks and is a potential pharmacological target for chronic disease treatment. While currently no drugs that target Nrf2 have been approved specifically for RA treatment, such an approach holds great significance. In recent years, the use of natural products to treat RA and other chronic conditions has become increasingly widespread because of their superior efficacy and minimal side effects. Therefore, this article provides a review of the mechanism of Nrf2 in RA and summarizes natural products that target Nrf2 and its associated pathways in the treatment of RA, aiming to offer new insights and strategies for the prevention and management of RA. Graphical abstract
- Published
- 2024
- Full Text
- View/download PDF
24. Role of ENO1 and its targeted therapy in tumors
- Author
-
Yafei Li, Lu Liu, and Bo Li
- Subjects
Medicine - Abstract
Abstract ENO1, also called 2-phospho-D-glycerate hydrolase in cellular glycolysis, is an enzyme that converts 2-phosphoglycerate to phosphoenolpyruvate and plays an important role in the Warburg effect. In various tumors, ENO1 overexpression correlates with poor prognosis. ENO1 is a multifunctional oncoprotein that, when located on the cell surface, acts as a “moonlighting protein” to promote tumor invasion and metastasis. When located intracellularly, ENO1 facilitates glycolysis to dysregulate cellular energy and sustain tumor proliferation. Additionally, it promotes tumor progression by activating oncogenic signaling pathways. ENO1 is a tumor biomarker and represents a promising target for tumor therapy. This review summarizes recent advances from 2020 to 2024 in understanding the relationship between ENO1 and tumors and explores the latest targeted therapeutic strategies involving ENO1.
- Published
- 2024
- Full Text
- View/download PDF
25. Precise regulating the specific oxygen consumption rate to strengthen the CoQ10 biosynthesis by Rhodobater sphaeroides
- Author
-
Bo Li, Yan Ge, Jianguang Liang, Zhichun Zhu, Biqin Chen, Dan Li, Yingping Zhuang, and Zejian Wang
- Subjects
Coenzyme Q10 ,Specific oxygen consumption rate ,Rhodobater sphaeroides ,Dielectric spectroscopy ,Morphology ,Technology ,Chemical technology ,TP1-1185 ,Biotechnology ,TP248.13-248.65 - Abstract
Abstract Coenzyme Q10 (CoQ10) is the most consumed dietary supplement and mainly biosynthesized by aerobic fermentation of Rhodobacter sphaeroides (R. sphaeroides). Oxygen supply was identified as a bottleneck for improving CoQ10 yield in R. sphaeroides. In this study, a precise regulation strategy based on dielectric spectroscopy (DS) was applied to further improve CoQ10 biosynthesis by R. sphaeroide. First, a quantitative response model among viable cells, cell morphology, and oxygen uptake rate (OUR) was established. DS could be used to detect viable R. sphaeroides cells, and the relationship among cell morphology, CoQ10 biosynthesis, and OUR was found to be significant. Based on this model, the online specific oxygen consumption rate (QO2) control strategy was successfully applied to the CoQ10 fermentation process. QO2 controlled at 0.07 ± 0.01 × 10− 7mmol/cell/h was most favorable for CoQ10 biosynthesis, resulting in a 28.3% increase in CoQ10 production. Based on the multi-parameters analysis and online QO2 control, a precise online nutrient feeding strategy was established using conductivity detected by DS. CoQ10 production was improved by 35%, reaching 3384 mg/L in 50 L bioreactors. This online control strategy would be effectively applied for improving industrial CoQ10 production, and the precise fermentation control strategy could also be applied to other fermentation process.
- Published
- 2024
- Full Text
- View/download PDF
26. A digital pathology model for predicting radioiodine-avid metastases on initial post-therapeutic 131I scan in patients with papillary thyroid cancer
- Author
-
Yuhang Xue, Minghui Zheng, Xinyu Wu, Bo Li, Xintao Ding, Shuxin Liu, Simiao Liu, Qiuyu Liu, and Yongju Gao
- Subjects
Medicine ,Science - Abstract
Abstract Accurate postoperative assessment is critical for optimizing 131I therapy in patients with papillary thyroid cancer (PTC). This study aimed to develop a pathology model utilizing postoperative digital pathology slides to predict lymph node and/or distant metastases on post-therapeutic 131I scan after initial 131I treatment in PTC patients. A retrospective analysis was conducted on 229 PTC patients who underwent total or near-total thyroidectomy and subsequent 131I treatment after levothyroxine (LT4) withdrawal between January 2022 and August 2023. The pathology model was developed through two stages: patch-level prediction and WSI-level prediction. The clinical model was constructed using statistically significant variables identified from univariate and multivariate logistic regression analysis. Of the 229 patients, 19.6% (45/229) exhibited 131I-avid metastatic foci in post-therapeutic 131I scan. Multifactorial analysis identified stimulated thyroglobulin (sTg) as the sole independent risk factor. The AUC of the pathology model in the training and test cohorts were 0.976 (95% CI 0.948–1.000) and 0.805 (95% CI 0.660–0.951), respectively, which were significantly higher than the clinical model (AUC 0.652 and 0.548, Pall
- Published
- 2024
- Full Text
- View/download PDF
27. Analysis of the air gap magnetic field in cylindrical magnetic couplings based on mathematical and finite element approach
- Author
-
Lian-bo Li, Tao Chen, and Wei-xuan Li
- Subjects
Magnetic field characteristics ,Magnetic flux density ,Analytic method ,Finite element method ,End effect ,Medicine ,Science - Abstract
Abstract The air gap magnetic field of a magnetic coupling plays a crucial role in the examination of its static torque and eddy current losses. Precise characterization of the air gap magnetic field is essential for ensuring the accuracy of performance assessments of the magnetic coupling. This study focuses on the cylindrical magnetic coupling as the subject of investigation, employing mathematical analysis and finite element methods to evaluate and quantify the magnetic field properties. The study establishes a mathematical model of the magnetic field of a magnetic coupling based on electromagnetic field principles and the superposition theorem. An analytical formula for the magnetic flux density distribution of the air-gap magnetic field is derived. Subsequently, a three-dimensional magnetic field finite element model is created using the finite element method to numerically calculate the air gap magnetic field and validate the analytical formula. The research also explores the periodic distribution characteristics of the magnetic field in the air gap, analyzing axial differences in magnetic flux density value and direction distribution influenced by end effects.
- Published
- 2024
- Full Text
- View/download PDF
28. Efficient tetracycline degradation using carbon quantum dot modified TiO2@LaFeO3 hollow core shell photocatalysts
- Author
-
Pengcheng Hao, Rui Shi, Xuanhang Wang, Juan Zhang, Bo Li, Jing Wang, Bo Liu, Yayuan Liu, Xin Qiao, and Zhongzhi Wang
- Subjects
CQDs@TiO2@LaFeO3 ,Hollow nuclear shell ,Heterojunction ,Antibiotic degradation ,Photocatalytic mechanism ,Medicine ,Science - Abstract
Abstract Efficient harnessing of solar energy presents a significant challenge in environmental cleanup efforts. This study develops a highly effective carbon quantum dots-modified hollow core-shell TiO2-LaFeO3 heterojunction photocatalyst (CDs-TLFO). Structural analysis confirmed that nanosheets are loaded with CQDs, forming a hollow core-shell structure with intimate interconnection. Photocatalytic experiments reveal that CDs-TLFO degrads tetracycline hydrochloride (TC) 2.02 times faster than TLFO alone, and significantly outperformes h-TiO2 and LaFeO3 (11.28 and 2.78 times, respectively). This enhancement is attributed to CQDs acting as electron acceptors with upconversion properties, enhancing the separation of e–-h+ pairs and boosting visible light absorption. Integration of CQDs onto the TLFO surface creates numerous active sites and enhances visible light absorption. SEM and TEM tests confirm that the catalyst has a hollow core-shell structure. ESR tests and radical trapping experiments indicate that the high degradation efficiency of the catalyst mainly owns to the synergistic effect of hydroxyl radicals (·OH) and superoxide radicals (·O2 −). The reusability and stability of the catalysts are investigated, potential TC degradation pathways are proposed as well as the photocatalytic reaction mechanism is revealed. This research introduces promising avenues for environmental cleanup and offers a straightforward, energy-efficient, and environmentally friendly method for producing CDs-TLFO heterojunction materials with superior photocatalytic capabilities.
- Published
- 2024
- Full Text
- View/download PDF
29. Photosynthesis of Au8Cu6 nanocluster for photocatalysis in oxidative functionalization of alkynes
- Author
-
Yan Zhao, Ze-Min Zhu, Weigang Fan, Wanli Zhu, Jing-Jing Yang, Yang Tao, Wenwen Fei, Hong Bi, Sheng Zhang, and Man-Bo Li
- Subjects
Science - Abstract
Abstract Ligand-protected metal nanoclusters provide an ideal platform for investigating photoredox catalysis. The central challenge is balancing their stability and catalytic activity. Here we show a photochemical reduction–oxidation cascade method for synthesizing an Au8Cu6 nanocluster, which features a robust structure and active surface. Photoredox catalytic activity of Au8Cu6 is developed for the functionalization of alkynes under oxidative conditions. Mechanism studies based on the precise structure reveal the catalytic process of the Au8Cu6 nanocluster. Oxidant-dependent selectivity of Au8Cu6 catalysis is developed for chemodivergent synthesis of mono- and di-functionalized products in high efficiency. The results will stimulate more research on metal nanocluster synthesis and catalysis.
- Published
- 2024
- Full Text
- View/download PDF
30. Height prediction of individuals with osteogenesis imperfecta by machine learning
- Author
-
Hongjiang Yang, Wenbiao Zhu, Bo Li, Hao Wang, Cong Xing, Yang Xiong, Xiuzhi Ren, and Guangzhi Ning
- Subjects
Osteogenesis imperfecta ,Growth curves ,Machine learning ,Ensemble learning ,Deep neural networks ,Prediction ,Medicine - Abstract
Abstract Background Osteogenesis imperfecta (OI) is a genetic disorder characterized by low bone mass, bone fragility and short stature. There is a significant gap in knowledge regarding the growth patterns across different types of OI, and the prediction of height in individuals with OI was not adequately addressed. In this study, we described the growth patterns and predicted the height of individuals with OI employing multiple machine learning (ML) models. Accurate height prediction enables effective monitoring and facilitates the development of personalized intervention plans for managing OI. Method This study included cross-sectional data for 323 participants with OI, and the median height Z-score for OI types I, III and IV were − 0.62 (-5.93 ~ 3.24), -3.97 (-10.44 ~ -0.02) and − 1.64 (-6.67 ~ 2.44), respectively. Based on the cross-sectional data of participants, the height curves across different gender and OI types were plotted and compared. Subsequently, feature selection techniques, specifically the filter and wrapper methods, were employed to identify predictive factors for the height of participants. Finally, multiple machine learning (ML) models were constructed for height prediction, and the performance of each model was systematically evaluated. Results The analysis of height curves revealed that male with OI are significantly taller than female with OI from the age of 14 (p = 0.045), individuals with OI type III are statistically shorter than those with OI types I and IV starting from 3 years old (p = 0.006), and those with OI type IV are statistically shorter than those with OI type I from the age of 10 (p = 0.028). The application of filter and wrapper methods identified gender (p = 0.001), age (p
- Published
- 2024
- Full Text
- View/download PDF
31. Psmb8 inhibits mitochondrial fission and alleviates myocardial ischaemia/reperfusion injury by targeting Drp1 degradation
- Author
-
Hui-Xiang Su, Luo-Luo Xu, Pang-Bo Li, Hai-Lian Bi, Wen-Xi Jiang, and Hui-Hua Li
- Subjects
Cytology ,QH573-671 - Abstract
Abstract The mitochondrial dynamic imbalance is an important cause of myocardial ischaemia/reperfusion (I/R) injury and dysfunction. Psmb8, as one of the immunoproteasome catalytic subunits, is a key regulator of protein homoeostasis, inflammation and some cardiac diseases. Here, we found that the expression level and activity of Psmb8 were significantly reduced in the heart of I/R mice and in subjects with myocardial infarction (MI). Cardiomyocyte-specific Psmb8 overexpression in mice markedly ameliorated I/R-mediated cardiac injury and dysfunction, which was accompanied by reduced mitochondrial division via the downregulation of dynamin-related protein-1 (Drp1). However, Psmb8 knockout (KO) mice exhibited the opposite changes. The effects of Psmb8 on mitochondrial fission and apoptosis was confirmed in primary cardiomyocytes with overexpression or knockdown of Psmb8 in vitro. Mechanistically, Psmb8 was directly associated with Drp1 and enhanced its degradation, which subsequently suppressed I/R-mediated mitochondrial fission and cardiac injury. Conversely, knockdown of Drp1 in Psmb8-KO mice restored I/R-induced cardiac dysfunction and mitochondrial dynamic imbalance. Our study identified a new cardioprotective role of Psmb8 in cardiac I/R damage through targeting Drp1, and highlight that increasing Psmb8 activity may constitute a promising therapy for ischaemic heart disease.
- Published
- 2024
- Full Text
- View/download PDF
32. Quinic acid as an inhibitor of α‐glucosidase activity, nonenzymatic glycosylation, and glucose transport in Caco‐2 cells
- Author
-
Ziyi Han, Leyu Wang, Panjie Sun, Mengxin Huang, Fei Yu, Junsheng Liu, Yuanyuan Wu, Puming He, Youying Tu, and Bo Li
- Subjects
α‐glucosidase ,glucose uptake ,nonenzymatic glycosylation ,quinic acid ,uncompetitive inhibition ,Nutrition. Foods and food supply ,TX341-641 ,Food processing and manufacture ,TP368-456 - Abstract
Abstract Hyperglycemia and diabetes are common metabolic disorders. It is considered a safe and effective strategy to screen active ingredients from food and herbs for controlling blood sugar levels. Quinic acid (QA) is a natural polyphenolic acid with various health‐promoting properties. In this study, QA was found to exhibit a potent inhibitory effect on α‐glucosidase activity, with a half maximal inhibitory concentration (IC50) of 5.46 mM. This inhibitory property surpassed that of three common organic acids including gallic acid, malic acid, and citric acid. A combination of 25% acarbose (0.5 mM) and 75% QA (5 mM) (v/v) exhibited synergistic inhibition of α‐glucosidase activity. Enzyme kinetics, fluorescence spectra, and molecular docking analyses indicated that QA acted as an uncompetitive inhibitor of α‐glucosidase, with hydrogen bonds playing a key role in the intermolecular interactions. Moreover, QA was found to effectively inhibit three major nonenzymatic glycation products including advanced glycosylation end products (AGEs), fructosamine, and α‐dicarbonyl in a dose‐dependent manner, outperforming the positive control aminoguanidine (AG) within the tested concentration range. Utilizing a Caco‐2 cell model, QA demonstrated the ability to inhibit the transmembrane absorption of glucose. This study highlighted QA as a promising food functional factor that had been overlooked in the past, offering potential benefits in improving hyperglycemia, diabetes, and associated complications through the inhibition of α‐glucosidase, nonenzymatic glycosylation, and glucose uptake.
- Published
- 2024
- Full Text
- View/download PDF
33. Proteomic analysis identified proteins that are differentially expressed in the flavonoid and carotenoid biosynthetic pathways of Camellia Nitidissima flowers
- Author
-
Xing-Wen Zhou, Xiao-Xia Ye, Bao-Jian Ye, Shi-Hong Yan, Hai-Bin Hu, Qiu-Yuan Xu, Xiong Yao, He-Xia Liu, Bo Li, Yi-Qing Xie, and Zhong-Jian Liu
- Subjects
Flower color ,Camellia Nitidissima ,Metabolites ,Proteome ,Metabolic pathway ,Tandem mass tag (TMT) ,Botany ,QK1-989 - Abstract
Abstract Background Camellia nitidissima Chi is a popular ornamental plant because of its golden flowers, which contain flavonoids and carotenoids. To understand the regulatory mechanism of golden color formation, the metabolites of C. nitidissima petals at five different developmental stages were detected, a proteome map of petals was first constructed via tandem mass tag (TMT) analysis, and the accuracy of the sequencing data was validated via parallel reaction monitoring (PRM). Results Nineteen color components were detected, and most of these components were carotenoids that gradually accumulated, while some metabolites were flavonoids that were gradually depleted. A total of 97,647 spectra were obtained, and 6,789 quantifiable proteins were identified. Then, 1,319 differentially expressed proteins (DEPs) were found, 55 of which belong to the flavonoid and carotenoid pathways, as revealed by pairwise comparisons of protein expression levels across the five developmental stages. Notably, most DEPs involved in the synthesis of flavonoids, such as phenylalanine ammonium lyase and 4-coumarate-CoA ligase, were downregulated during petal development, whereas DEPs involved in carotenoid synthesis, such as phytoene synthase, 1-deoxy-D-xylulose-5-phosphate synthase, and β-cyclase, tended to be upregulated. Furthermore, protein‒protein interaction (PPI) network analysis revealed that these 55 DEPs formed two distinct PPI networks closely tied to the flavonoid and carotenoid synthesis pathways. Phytoene synthase and chalcone synthase exhibited extensive interactions with numerous other proteins and displayed high connectivity within the PPI networks, suggesting their pivotal biological functions in flavonoid and carotenoid biosynthesis. Conclusion Proteomic data on the flavonoid and carotenoid biosynthesis pathways were obtained, and the regulatory roles of the DEPs were analyzed, which provided a theoretical basis for further understanding the golden color formation mechanism of C. nitidissima.
- Published
- 2024
- Full Text
- View/download PDF
34. Risk factors for early onset patellofemoral osteoarthritis following anterior cruciate ligament reconstruction with hamstring tendon autograft
- Author
-
Bo Li, Yin-feng Qian, Fu-jun Liu, and Bin Xu
- Subjects
Anterior cruciate ligament reconstruction ,Anterior tibial translation ,Patellar tilt angle ,Patellofemoral osteoarthritis ,TT-TG distance ,Orthopedic surgery ,RD701-811 ,Diseases of the musculoskeletal system ,RC925-935 - Abstract
Abstract Objective This study aimed to identify risk factors contributing to the early onset of patellofemoral osteoarthritis (PFOA) within the first two years following anterior cruciate ligament reconstruction (ACLR) using a hamstring tendon autograft. Methods Participants aged 18 to 40 who had undergone ACLR within the past two years were included in this study, along with a control group of healthy volunteers. Magnetic resonance imaging (MRI) data were obtained preoperatively, at two years postoperatively, and from the control group. T-tests were used to assess differences in patellofemoral alignment (PA) and trochlear morphology (TM) between the pre- and post-ACLR patients and healthy controls. The incidence of PFOA was recorded, and associations between PA, TM, and clinical parameters were evaluated in patients with and without PFOA. Logistic regression analysis was conducted to identify potential risk factors for PFOA development. Results A total of 177 patients, with a mean follow-up period of 22.17 ± 5.09 months and a mean age of 26.4 ± 5.6 years, were included in the study. Following ACL injury, significant alterations in patellar tilt angle (PTA), tuberositas tibae-trochlear groove distance (TT-TG), Insall-Salvati ratio (ISR), and static anterior tibial translation (SATT) were observed compared to the control group. Postoperatively, deviations in PTA and SATT remained significant when compared to healthy controls. Of the 177 patients, 68 (38.42%) developed early-onset PFOA. Factors associated with the early onset of PFOA included age at the time of surgery, the interval between injury and surgery, PTA, bisect offset (BO), sulcus angle (SA), thigh circumference, SATT, and partial meniscectomy. Conclusion Significant differences in PTA, TT-TG, ISR, and SATT were identified between patients who underwent ACLR and healthy controls. Postoperatively, there was no correction in PTA or SATT, which remained significantly altered. Factors such as age at the time of surgery, PTA, BO, SA, ISR, SATT, thigh circumference, partial meniscectomy, and the time interval between injury and surgery were associated with the early onset of PFOA within two years post-ACLR. These findings may aid in the prevention of PFOA by identifying individuals at higher risk for early development.
- Published
- 2024
- Full Text
- View/download PDF
35. Ancestral Sequence Reconstruction Enhances Thermal Stability of D-Allulose 3-Epimerase
- Author
-
Lijun GUAN, Ling ZHU, Kunlun WANG, Jialei LI, Yang GAO, Song YAN, Xindi ZHANG, Qing CHEN, Nina JI, and Bo LI
- Subjects
ancestral sequence reconstruction ,d-allulose ,d-allulose 3-epimerase ,thermostability ,Food processing and manufacture ,TP368-456 - Abstract
To solve the problem of poor thermal stability of the current D-allulose 3-epimerase (DAEase), the ancestor sequences of DAEase with different catalytic domains were reconstructed by big data mining, reasonable modification and ancestor sequence reconstruction (ASR) strategy under the guidance of phylogenetic information. The expression vectors of the ancestor sequences were constructed, and DAEase A13 with significantly enhanced thermal stability was screened by recombinant expression and molecular docking, and its enzymatic properties were characterized. In addition, the molecular mechanism of thermal stability enhancement of DAEase A13 was revealed based on structural analysis and molecular dynamics. The results showed that the half-life of A13 constructed based on ASR strategy could reach 8.4 h at 70 ℃, indicating that its thermal stability was significantly enhanced compared with that of wild-type (WT) enzyme. The maximum conversion rate of A13 reached 31%, indicating that the catalytic activity of A13 was slightly higher than that of WT enzyme. The structural and molecular dynamics analysis revealed that the increase in hydrogen bonding and hydrophobic interaction in ASR A13 was the main factor responsible for maintaining the stability of the enzyme's molecular structure at high temperatures. The results showed that ASR strategy could modify DAEases to enhance the stability, activity or hybridity, which could provide superior biocatalyst sources for various industrial applications of functional sugars.
- Published
- 2024
- Full Text
- View/download PDF
36. A review of recent advances in electrochemical and photoelectrochemical late-stage functionalization classified by anodic oxidation, cathodic reduction, and paired electrolysis
- Author
-
Nian Li, Ruzal Sitdikov, Ajit Prabhakar Kale, Joost Steverlynck, Bo Li, and Magnus Rueping
- Subjects
electrochemistry ,late-stage functionalization ,paired electrolysis ,pharmaceutical drugs ,photoelectrochemistry ,Science ,Organic chemistry ,QD241-441 - Abstract
With the resurgence of electrosynthesis in organic chemistry, there is a significant increase in the number of routes available for late-stage functionalization (LSF) of drugs. Electrosynthetic methods, which obviate the need for hazardous chemical oxidants or reductants, offer unprecedented control of reactions through the continuous variation of the applied potential and the possibility of combination with photochemical processes. This capability is a substantial advantage for performing electrochemical or photoelectrochemical LSF. Ultimately, these protocols are poised to become a vital component of the medicinal chemist's toolkit. In this review, we discuss electrochemical protocols that have been demonstrated to be applicable for the LSF of pharmaceutical drugs, their derivatives, and natural substrates. We present and analyze representative examples to illustrate the potential of electrochemistry or photoelectrochemistry for the LSF of valuable molecular scaffolds.
- Published
- 2024
- Full Text
- View/download PDF
37. An effector essential for virulence of necrotrophic fungi targets plant HIRs to inhibit host immunity
- Author
-
Xiaofan Liu, Huihui Zhao, Mingyun Yuan, Pengyue Li, Jiatao Xie, Yanping Fu, Bo Li, Xiao Yu, Tao Chen, Yang Lin, Weidong Chen, Daohong Jiang, and Jiasen Cheng
- Subjects
Science - Abstract
Abstract Phytopathogens often secrete effectors to enhance their infection of plants. In the case of Sclerotinia sclerotiorum, a necrotrophic phytopathogen, a secreted protein named SsPEIE1 (Sclerotinia sclerotiorum Plant Early Immunosuppressive Effector 1) plays a crucial role in its virulence. During the early stages of infection, SsPEIE1 is significantly up-regulated. Additionally, transgenic plants expressing SsPEIE1 exhibit increased susceptibility to different phytopathogens. Further investigations revealed that SsPEIE1 interacts with a plasma membrane protein known as hypersensitive induced reaction (HIR) that dampens immune responses. SsPEIE1 is required for S. sclerotiorum virulence on wild-type Arabidopsis but not on Arabidopsis hir4 mutants. Moreover, Arabidopsis hir2 and hir4 mutants exhibit suppressed pathogen-associated molecular pattern-triggered reactive oxygen species (ROS) bursts and salicylic acid (SA)-associated immune gene induction, all of which are phenocopied by the SsPEIE1 transgenic plants. We find that the oligomerization of AtHIR4 is essential for its role in mediating immunity, and that SsPEIE1 inhibits its oligomerization through competitively binding to AtHIR4. Remarkably, both Arabidopsis and rapeseed plants overexpress AtHIR4 display significantly increased resistance to S. sclerotiorum. In summary, these results demonstrate that SsPEIE1 inhibits AtHIR4 oligomerization-mediated immune responses by interacting with the key immune factor AtHIR4, thereby promoting S. sclerotiorum infection.
- Published
- 2024
- Full Text
- View/download PDF
38. TMEM173 is a biomarker of predicting prognosis, immune responses and therapeutic effect in human lung adenocarcinoma
- Author
-
Pingting Zhou, Pengru Wang, and Bo Li
- Subjects
TMEM173 ,Lung adenocarcinoma ,Prognostic biomarker ,Immune cell infiltrations ,Immunotherapy ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract The concerns on the function of Transmembrane protein 173 (TMEM173)-dependent innate immunity in prevention and management of cancers has recently been increased. The role of TMEM173 in predicting the prognosis and response to treatment in lung adenocarcinoma (LUAD) remain unclear. Our study revealed that TMEM173 expression was significantly differential in various tumors and the related prognosis was heterogeneous. Further investigation discovered that the expression level of TMEM173 in LUAD tissues was significantly decreased and high TMEM173 expression is associated with better overall survival in LUAD patients. TMEM173 was mainly enriched in immune response-regulating signaling pathway, T cell activation and cell cycle G2/M phase. Furthermore, it was found that TMEM173 expression was positively related to markers and infiltration levels of tumor-infiltrating immune cells. TMEM173 could predict response to targeted therapy, chemotherapy and immunotherapy in LUAD patients. In vitro TMEM173 knockdown decreased the percentage of G2 phase cells, contributing to the increased growth of lung cancer cells. These results implied that TMEM173 might be a prognostic biomarker and a potential target of precision therapy for LUAD patients.
- Published
- 2024
- Full Text
- View/download PDF
39. Fracture features and fault influence on gas accumulation in the Longmaxi Formation in Changning block, southern Sichuan Basin
- Author
-
Bo Li, Shengxian Zhao, Yongyang Liu, Xuefeng Yang, Yong Liu, Jian Zhang, Chenglin Zhang, Jiajun Li, Gaoxiang Wang, and Meixuan Yin
- Subjects
Changning ,Lower silurian ,Longmaxi formation ,Shale gas ,Preservation conditions ,Gas industry ,TP751-762 - Abstract
The Lower Silurian Longmaxi Formation is a major horizon for shale gas development in the Changning block in Sichuan Basin. In this study, the fracture features in the Longmaxi Formation in the Changning block were investigated through outcrop observation, core description, inclusion testing, and Fullbore Formation MicroImage logging. The results showed that tectogenetic shear fractures dominated the Longmaxi Formation, with maximum principal stress in the SSW, NW, and NE directions. According to fracture features and stress analysis, three phases of faults were generated by tectonic movements after the buried depth reached a maximum in the study area: phase 1 nearly EW-trending faults formed in the middle-late Yanshanian, phase 2 NE-trending faults formed from the end of the Yanshanian to the early Himalayan, and phase 3 NW-trending faults formed from the middle Himalayan to the present. According to the regression analysis of the tested shale gas production and faults, the faults with a throw of > 200 m could have a great effect on gas production, and high-yield wells were generally located over 1 km away from faults. Based on the dissection of tectonic styles and typical wells drilled in the Changning block, three shale gas accumulation models were established: wide gentle syncline + internal smalxl fault, subdued anticline + large fault, and slope + internal fault. The study reveals the mechanism of fault influence on shale gas accumulation in the Longmaxi Formation in the Changning block and provides a reference for efficient shale gas production in the Sichuan Basin.
- Published
- 2024
- Full Text
- View/download PDF
40. Characteristics of climate resource utilization and economic benefits in new planting pattern for fresh faba bean and fresh maize in Yangtze River Delta
- Author
-
Bo Li, Qingming Ren, Xiaoxu Shi, Wenyuan Shen, Yafeng Wei, and Fei Xiong
- Subjects
Fresh faba bean ,fresh maize ,fresh soybean ,relay intercropping ,yield ,resource use efficiency ,Plant culture ,SB1-1110 - Abstract
In this research, we aimed to construct a novel planting pattern for faba bean and maize with high-efficiency utilization of climate resources for application in production. We incorporated relay intercropping in two triple-crop planting patterns, namely faba bean/maize-maize and faba bean/maize-soybean. A field experiment was conducted to compare the annual yield, utilization efficiency of climatic resources and economic benefits among these two triple-crop planting patterns and the conventional faba bean – maize double-cropping system at Nantong, Jiangsu, China, from 2016 to 2020. Compared with the conventional double-cropping system, the faba bean/maize-maize triple-crop planting pattern resulted in significantly increased annual yield by 7,392 kg hm−2 to 10,519 kg hm−2, and increased annual biomass by 5,342 kg hm−2 to 7,172 kg hm−2.The triple-crop planting patterns increased the annual economic benefit by 12,195 RMB hm−2 and 15,680 RMB hm−2, respectively. The faba bean/maize-maize triple-crop planting pattern increased the annual radiation production efficiency by 0.18 g·MJ−1 to 0.31 g·MJ−1, the annual temperature production efficiency by 2.70 kg·hm−2·°C−1 to 3.78 kg·hm−2·°C−1, and the annual precipitation production efficiency by 4.55 kg·mm−1·hm−2 to 7.20 kg·mm−1·hm−2. Considering the yields, resource-use efficiency, and economic benefits, the triple-cropping planting patterns show promise as multi-crop systems to achieve high yields and high resource-use efficiency in the Yangtze River Delta region. These results demonstrate the use of a new relay intercropping planting pattern for use in crop production and represent a theoretical contribution to the development of efficient agricultural production.
- Published
- 2024
- Full Text
- View/download PDF
41. Morphodynamics of interface between dissimilar cell aggregations
- Author
-
Cheng-Lin Lv, Zhong-Yi Li, Shi-Da Wang, and Bo Li
- Subjects
Astrophysics ,QB460-466 ,Physics ,QC1-999 - Abstract
Abstract Tissue interfaces are essential for development and their disruption often leads to diseases such as tumor invasion. Here, we combine experiments, theoretical modeling, and numerical simulations to quantify the morphodynamics of interface in a biphasic system composed of Madin Darby canine kidney (MDCK) and mouse myoblast (C2C12) cells. We show that cellular activity regulates the interface morphodynamics and drives wave propagation along the interface. Based on the dispersion relationship, we identify that the wave dynamics results from the activity-mediated instability of the interface and coherent flow. It is found that the topological defects accumulate around and destabilize the interface and +1/2 topological defects are more likely to aggregate in MDCK cell clusters. A biphasic active nematic theory is employed to reproduce our experimental observations and decipher the underlying mechanisms. These findings provide physical insights into the interfacial evolution that could be implicated in tissue morphogenesis and tumor invasion.
- Published
- 2024
- Full Text
- View/download PDF
42. Interpretable GWAS by linking clinical phenotypes to quantifiable immune repertoire components
- Author
-
Yuhao Tan, Lida Wang, Hongyi Zhang, Mingyao Pan, Dajiang J. Liu, Xiaowei Zhan, and Bo Li
- Subjects
Biology (General) ,QH301-705.5 - Abstract
Abstract Bridging the gap between genotype and phenotype in GWAS studies is challenging. A multitude of genetic variants have been associated with immune-related diseases, including cancer, yet the interpretability of most variants remains low. Here, we investigate the quantitative components in the T cell receptor (TCR) repertoire, the frequency of clusters of TCR sequences predicted to have common antigen specificity, to interpret the genetic associations of diverse human diseases. We first developed a statistical model to predict the TCR components using variants in the TRB and HLA loci. Applying this model to over 300,000 individuals in the UK Biobank data, we identified 2309 associations between TCR abundances and various immune diseases. TCR clusters predicted to be pathogenic for autoimmune diseases were significantly enriched for predicted autoantigen-specificity. Moreover, four TCR clusters were associated with better outcomes in distinct cancers, where conventional GWAS cannot identify any significant locus. Collectively, our results highlight the integral role of adaptive immune responses in explaining the associations between genotype and phenotype.
- Published
- 2024
- Full Text
- View/download PDF
43. Cerebral‐Cerebellar Cortical Activity and Connectivity Underlying Sensory Trick in Cervical Dystonia
- Author
-
Nai‐Qing Cai, Wu‐Xiang Shi, Ru‐Kai Chen, Bo‐Li Chen, Yu‐Rong Li, and Ning Wang
- Subjects
Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Objective The objective of this study was to investigate the activity and connectivity of cerebral and cerebellar cortices underlying the sensory trick (ST) effects in patients with cervical dystonia (CD), using electroencephalography (EEG). Methods We recruited 15 CD patients who exhibited clinically effective ST and 15 healthy controls (HCs) who mimicked the ST maneuver. EEG signals and multiple‐channel electromyography (EMG) were recorded simultaneously during resting and acting stages. EEG source analysis and functional connectivity were performed. To account for the effects of sensory processing, we calculated relative power changes as the difference in power spectral density between resting and the maneuver execution. Results ST induced a decrease in low gamma (30–50 Hz) spectral power in the primary sensory and cerebellar cortices, which remained lower than in HCs during the maintenance period. Compared with HCs, patients exhibited consistently strengthened connectivity within the sensorimotor network during the maintenance period, particularly in the primary sensory‐sensorimotor cerebellum connection. Interpretation The application of ST resulted in altered cortical excitability and functional connectivity regulated by gamma oscillation in CD patients, suggesting that this effect cannot be solely attributed to motor components. The cerebellum may play important roles in mediating the ST effects.
- Published
- 2024
- Full Text
- View/download PDF
44. Primula meishanensis (Primulaceae), a new species from Sichuan, China
- Author
-
Tingyu Li, Xinyu Chen, Bo Li, Donglai Hua, Can Luo, Huixian Luo, Yun Liang, Jieli Yue, Xiaodan Xi, Ke Huang, and Zhixi Fu
- Subjects
Botany ,QK1-989 - Abstract
Primula meishanensis K.Huang & Z.X.Fu, sp. nov., a new species of Primulaceae from Meishan City, Sichuan Province, China, is described and illustrated. The morphological data and phylogenetic analysis, based on the complete chloroplast genome, suggest that Primula meishanensis is a separate species closely related to Primula dejuniana. The complete chloroplast genome of Primula meishanensis was 152,175 bp and the complete chloroplast genome of Primula dejuniana was 151,988 bp. The new species differs from the latter by the solitary scape, the length of petiole, acute leaf blade apex and pin flower. The distribution map, morphological comparison of related species and conservation status of the new species are also provided.
- Published
- 2024
- Full Text
- View/download PDF
45. Research on an identification model for mine water inrush sources based on the HBA-CatBoost algorithm
- Author
-
Jin Xu, Lulin Zheng, Hong Lan, Yujun Zuo, Bo Li, Shiyu Tian, and Youwen Tian
- Subjects
Mine water inrush ,Water source identification ,Hybrid bat algorithm ,CatBoost model ,Machine learning ,Medicine ,Science - Abstract
Abstract Accurate and efficient identification of water inrush sources, as one of the three critical elements of mine water hazards, is crucial for mine water management. To identify the sources of mine water inrush effectively, a model named HBA-CatBoost is introduced. This model is established on the hybrid bat algorithm (HBA)-optimized category feature gradient boosting tree (CatBoost), and the shapley additive explanation (SHAP) method is employed to elucidate the model’s decision-making process. Given the prevalent occurrence of water hazards in coal seam roofs and floors in the northern Guizhou coalfield, coupled with the challenges in pinpointing water inrush sources in mines, the HBA-CatBoost model is tested at the Longfeng Coal Mine in northern Guizhou to validate its practicality. Comparative analysis with the HBA-RF, HBA-XGBoost, CatBoost, RF, and XGBoost models demonstrates that the hybrid bat algorithm significantly enhances the classification performance of the CatBoost model, resulting in improved convergence speed and classification accuracy. The HBA-CatBoost model outperforms the aforementioned models in terms of classification effectiveness, achieving accuracy, recall, precision, and F1 scores of 96.43%, 97.22%, 96.43%, and 96.61%, respectively. The SHAP method elucidates the decision mechanism of the optimal HBA-CatBoost model, highlighting the significance of sample features and bolstering the model’s credibility. These outcomes underscore the superior performance of the HBA-CatBoost model and its potential for effectively identifying water inrush sources in mines.
- Published
- 2024
- Full Text
- View/download PDF
46. Is longer axial length protective of vision-threatening diabetic retinopathy across different ages? A multicenter cohort of 736 patients
- Author
-
Mingpeng Xu, Bo Li, Chenxin Li, Peiwei Chai, Qinghua Qiu, Zhi Zheng, Qian Chen, Dawei Luo, Xiaofang Xu, and Chuandi Zhou
- Subjects
Diabetic retinopathy ,Axial length ,Tractional retinal detachment ,Best-corrected visual acuity ,Neovascular glaucoma ,Recurrent vitreous hemorrhage ,Ophthalmology ,RE1-994 - Abstract
Abstract Purpose Vision-threatening diabetic retinopathy (VTDR) included severe non-proliferative diabetic retinopathy (NPDR), proliferative diabetic retinopathy (PDR) and clinically significant diabetic macular edema (DME). To compare the axial length (AL) and assess its influence on VTDR across different ages. Methods A retrospective cohort study. Medical chart review was performed in 736 consecutive patients with VTDR. The patients were divided into young (≤ 45 years) and elderly group (> 45 years) based on their age at the diagnosis of VTDR. After at least one year of standardized treatments, all eligible patients were followed up. The main outcome measures included the presence of tractional retinal detachment (TRD) involving foveal, final best-corrected visual acuity (BCVA), the development of neovascular glaucoma (NVG), and recurrent vitreous hemorrhage (VH) post-vitrectomy. ALs were compared between two age groups. The impact of AL on clinical outcomes was determined by logistic analyses after controlling for systemic parameters. Results The study included 144 patients ≤ 45 years and 592 patients > 45 years. Young patients had significantly longer AL than elderly participants (23.9 mm vs 23.0 mm, p
- Published
- 2024
- Full Text
- View/download PDF
47. Effects of dexamethasone on the EC50 of remifentanil combined with dexmedetomidine achieving analgesia during pancreatic extracorporeal shockwave lithotripsy: a prospective, randomized and controlled study
- Author
-
Yu Guo, Jun Lu, Bo Li, Chang-Li Wang, Jia-Feng Wang, and Xiao-Ming Deng
- Subjects
Dexamethasone ,Pancreatic extracorporeal shock-wave lithotripsy ,Remifentanil ,Pancreatic stones ,Anesthesiology ,RD78.3-87.3 - Abstract
Abstract Background In addition to their classic genomic effects, glucocorticoids also manifest rapid non genomic effects. We speculate that dexamethasone has the potential prompt onset of analgesic effects. The objective of this study is to investigate the influence of a single preoperative dose of dexamethasone on the half maximal effective concentration (EC50) of remifentanil when combined with dexmedetomidine for pain relief during pancreatic extracorporeal shockwave lithotripsy (P-ESWL). Methods A total of 60 patients undergoing P-ESWL were enrolled and randomized at 1:1 ratio into the dexamethasone (DXM) group and the placebo group. Before anesthesia induction, patients in DXM group received an intravenous injection of 8 mg dexamethasone, while subjects in placebo group received an equal dose of physiological saline. Monitored anesthesia care (MAC) was performed based on remifentanil in combination with dexmedetomidine. Remifentanil was administered by TCI with an initial target concentration of 2.5 µg/mL for both groups. A positive response was defined as that VAS score > 3 by the patient at any time during the procedure. Subsequent target concentrations were adjusted by Dixon up-down sequential method, where dose modifications were performed by 0.3 ng/mL intervals, based on the response of the previous patient. The EC50 of remifentanil for pain relief during P-ESWL treatment was calculated using Dixon’s up-and-down method. Hemodynamic variables, oxygen saturation and adverse events were also recorded. Results Dixon up-and-down method revealed that the EC50 of remifentanil was significantly higher in placebo group (2.65 ± 0.28 ng/mL) than in DXM group (2.02 ± 0.23 ng/ml) (P 0.05). Less adverse events occurred in DXM group, including the incidence of postoperative nausea and vomiting (PONV) and analgesia requirement with in the first 24 h following the procedure at ward. Conclusion Dexamethasone exerted analgesic effects with a rapid onset, and patients received dexamethasone 8 mg preoperative had a lower required EC50 of remifentanil during P-ESWL. It is also associated with reduced PONV in addition to reduced postoperative analgesic consumption in the first postoperative 24 h. Trial registration Registered in the Chinese Clinical Trial Registry (ChiCTR2300078171) on 30/11/2023.
- Published
- 2024
- Full Text
- View/download PDF
48. Nanopore-based full-length transcriptome sequencing for understanding the underlying molecular mechanisms of rapid and slow progression of diabetes nephropathy
- Author
-
Jing E, Shun-Yao Liu, Dan-Na Ma, Guo-Qing Zhang, Shi-Lu Cao, Bo Li, Xiao-hua Lu, Hong-Yan Luo, Li Bao, Xiao-Mei Lan, Rong-Guo Fu, and Ya-Li Zheng
- Subjects
Diabetic ,Nephropathy full-length transcriptome ,Ferroptosis ,Autophagy/mitophagy ,Apoptosis/necroptosis ,Internal medicine ,RC31-1245 ,Genetics ,QH426-470 - Abstract
Abstract Background Diabetic nephropathy (DN) has been a major factor in the outbreak of end-stage renal disease for decades. As the underlying mechanisms of DN development remains unclear, there is no ideal methods for the diagnosis and therapy. Objective We aimed to explore the key genes and pathways that affect the rate progression of DN. Methods Nanopore-based full-length transcriptome sequencing was performed with serum samples from DN patients with slow progression (DNSP, n = 5) and rapid progression (DNRP, n = 6). Results Here, transcriptome proclaimed 22,682 novel transcripts and obtained 45,808 simple sequence repeats, 1,815 transcription factors, 5,993 complete open reading frames, and 1,050 novel lncRNA from the novel transcripts. Moreover, a total of 341 differentially expressed transcripts (DETs) and 456 differentially expressed genes (DEGs) between the DNSP and DNRP groups were identified. Functional analyses showed that DETs mainly involved in ferroptosis-related pathways such as oxidative phosphorylation, iron ion binding, and mitophagy. Moreover, Functional analyses revealed that DEGs mainly involved in oxidative phosphorylation, lipid metabolism, ferroptosis, autophagy/mitophagy, apoptosis/necroptosis pathway. Conclusion Collectively, our study provided a full-length transcriptome data source for the future DN research, and facilitate a deeper understanding of the molecular mechanisms underlying the differences in fast and slow progression of DN.
- Published
- 2024
- Full Text
- View/download PDF
49. LncRNA NR2F2‐AS1 inhibits the progression of oral squamous cell carcinoma by mediating the miR‐32‐5p/SEMA3A axis
- Author
-
Shi‐Yu Qin, Bo Li, Ji‐Mu Liu, Qiu‐Li Lv, and Xiang‐Lin Zeng
- Subjects
angiogenesis ,miR‐32‐5p ,NR2F2‐AS1 ,OSCC ,SEMA3A ,Medicine (General) ,R5-920 - Abstract
Abstract Previous studies have supported a tumor‐suppressive role of semaphorin 3A (SEMA3A) in several tumors including oral squamous cell carcinoma (OSCC). However, in‐depth characterization of the role of SEMA3A in OSCC and the underlying molecular mechanisms is lacking. Gene and protein expressions were detected using quantitative real‐time PCR, western blot assay, and immunohistochemistry. OSCC cell metastasis was evaluated using Transwell and angiogenesis of human umbilical vein endothelial cells (HUVECs) was determined using tube formation assay. The interactions among molecules were predicted using bioinformatics analysis and validated using luciferase activity experiment and RNA immunoprecipitation assay. Pulmonary metastasis was evaluated using hematoxylin and eosin staining after constructing a lung metastasis tumor model in mice. SEMA3A expression was decreased in OSCC cells and its overexpression led to suppression of epithelial‐mesenchymal transition (EMT), migration, and invasion of OSCC cells and angiogenesis of HUVECs. miR‐32‐5p was identified as an upstream molecule of SEMA3A and long non‐coding RNA NR2F2 antisense RNA 1 (NR2F2‐AS1) was validated as an upstream gene of miR‐32‐5p. Further experiments revealed that the inhibitory effects of NR2F2‐AS1 overexpression on EMT, migration, invasion of OSCC cells, and angiogenesis of HUVECs as well as tumor growth and metastasis in mice were mediated via the miR‐32‐5p/SEMA3A axis. To conclude, NR2F2‐AS1 may attenuate OSCC cell metastasis and angiogenesis of HUVECs and suppress tumor growth and metastasis in mice via the miR‐32‐5p/SEMA3A axis.
- Published
- 2024
- Full Text
- View/download PDF
50. Self‐supervised multi‐view clustering in computer vision: A survey
- Author
-
Jiatai Wang, Zhiwei Xu, Xuewen Yang, Hailong Li, Bo Li, and Xuying Meng
- Subjects
computer vision ,pattern clustering ,Computer applications to medicine. Medical informatics ,R858-859.7 ,Computer software ,QA76.75-76.765 - Abstract
Abstract In recent years, multi‐view clustering (MVC) has had significant implications in the fields of cross‐modal representation learning and data‐driven decision‐making. Its main objective is to cluster samples into distinct groups by leveraging consistency and complementary information among multiple views. However, the field of computer vision has witnessed the evolution of contrastive learning, and self‐supervised learning has made substantial research progress. Consequently, self‐supervised learning is progressively becoming dominant in MVC methods. It involves designing proxy tasks to extract supervisory information from image and video data, thereby guiding the clustering process. Despite the rapid development of self‐supervised MVC, there is currently no comprehensive survey analysing and summarising the current state of research progress. Hence, the authors aim to explore the emergence of self‐supervised MVC by discussing the reasons and advantages behind it. Additionally, the internal connections and classifications of common datasets, data issues, representation learning methods, and self‐supervised learning methods are investigated. The authors not only introduce the mechanisms for each category of methods, but also provide illustrative examples of their applications. Finally, some open problems are identified for further investigation and development.
- Published
- 2024
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.