675 results on '"Ziqi Zhang"'
Search Results
2. Preclinical evaluation and first-in-human study of [18F]AlF-FAP-NUR for PET imaging cancer-associated fibroblasts
- Author
-
Shaoyu Liu, Ziqi Zhang, Jiawei Zhong, Huizhen Zhong, Yimin Fu, Lifang Liu, Xiaoting Ye, and Xinlu Wang
- Subjects
Fibroblast activation protein ,Peptide-based FAP tracers ,Positron emission tomography ,[18F]F-labeled ,Medical physics. Medical radiology. Nuclear medicine ,R895-920 - Abstract
Abstract Background Fibroblast activation protein (FAP) has gained attention as a promising molecular target with potential utility for cancer diagnosis and therapy. [68Ga]Ga-labeled FAP-targeting peptides have been successfully applied to positron emission tomography (PET) imaging of various tumor types. To meet the applicable demand for peptide-based FAP tracers with high patient throughput, we herein report the radiosynthesis, preclinical evaluation, and the first-in-human imaging of a novel [18F]F-labeled FAP-targeting peptide. Results [18F]AlF-FAP-NUR was automatedly prepared within 45 min with a non-decay corrected radiochemical yield of 18.73 ± 4.25% (n = 3). Compared to [68Ga]Ga-FAP-2286, the [18F]F-labeled peptide demonstrated more rapid, higher levels of cellular uptake and internalization, and lower levels of cellular efflux in HT1080-FAP cells. Micro-PET imaging and biodistribution studies conducted on xenograft mice models revealed a similar distribution pattern between the two tracers. However, [18F]AlF-FAP-NUR demonstrated significantly higher tumor-specific uptake resulting in improved Tumor-Background Ratios (TBRs). In the patients, a significant accumulation of [18F]AlF-FAP-NUR was found in the primary tumor. High uptake of the tracer within the bladder indicated that its major route of excretion was through urine. Conclusions Based on the physical imaging properties and longer half-life of [18F]F, [18F]AlF-FAP-NUR exhibited promising characteristics such as enhanced tumor-specific accumulation and elevated TBRs, which made it a viable candidate for further clinical investigation. Trial registration www.Chictr.org.cn , ChiCTR2300076976 Retrospectively registered 25 October 2023. at, URL: https://www.chictr.org.cn/showproj.html?proj=206753 .
- Published
- 2024
- Full Text
- View/download PDF
3. Assessing the risk of check dam failure due to heavy rainfall using machine learning on the Loess Plateau, China
- Author
-
Yulan Chen, Jianjun Li, Juying Jiao, Leichao Bai, Nan Wang, Tongde Chen, Ziqi Zhang, Qian Xu, and Jianqiao Han
- Subjects
Check dam ,Failure risk ,Machine learning ,Reinforcement measures ,Loess Plateau ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
Check dams are widely used throughout the world to tackle soil and water loss. However, the frequency of extreme rainfall events has increased owing to global climate change and the main structure of check dam is gradually aging, which lead to an increase in the failure risk of check dams. Thus, it is necessary to carry out the study on failure risk diagnosis and assessment of check dams. In the study, machine learning algorithms (ML), including random forests (RF), support vector machine (SVM), and logistic regression (LR), were used to integrate the environmental and engineering factors and then assess the risk of check dam failure due to the “7.26” rainstorm on July 26, 2017, in the Chabagou watershed, located in the hilly-gully region of the Loess Plateau, China. To verify the generalizability of the model in this study, these models were used for the Wangmaogou catchment north of the Loess Plateau. The accuracy assessment by the receiver operating characteristic (ROC) curve indicated that the RF model with an area under the ROC curve (AUC) greater than 0.89 was the most precise model and had a higher generalization ability. In addition, the model dataset was relatively small and easy to obtain, which make the risk modeling of check dam failure in the study has the potential for application in other regions. In the RF model, each factor selected was confirmed to be important, and the importance values for engineering factors were generally higher than those for the environmental factors. The risk map of check dam failure in the RF model indicated that 56.34% of check dams in the study area had very high and high risks of dam failure under high-intensity rainfall in 2017. Based on the importance of factors and the risk map of check dam failure, the prevention and control measures for reducing the risk of check dam failure and promoting the construction of check dam are proposed. These proposals provide a scientific basis for the reinforcement of check dams and the future layout of check dams in the Chinese Loess Plateau.
- Published
- 2024
- Full Text
- View/download PDF
4. Beyond hype: unveiling the Real challenges in clinical translation of 3D printed bone scaffolds and the fresh prospects of bioprinted organoids
- Author
-
Xiangyu Zhao, Na Li, Ziqi Zhang, Jinjia Hong, Xiaoxuan Zhang, Yujia Hao, Jia Wang, Qingpeng Xie, Yuan Zhang, Huifei Li, Meixian Liu, Pengfei Zhang, Xiuyun Ren, and Xing Wang
- Subjects
Bone scaffolds ,Clinical translation ,Printing materials ,Printing methods ,Organoids ,Biotechnology ,TP248.13-248.65 ,Medical technology ,R855-855.5 - Abstract
Abstract Bone defects pose significant challenges in healthcare, with over 2 million bone repair surgeries performed globally each year. As a burgeoning force in the field of bone tissue engineering, 3D printing offers novel solutions to traditional bone transplantation procedures. However, current 3D-printed bone scaffolds still face three critical challenges in material selection, printing methods, cellular self-organization and co-culture, significantly impeding their clinical application. In this comprehensive review, we delve into the performance criteria that ideal bone scaffolds should possess, with a particular focus on the three core challenges faced by 3D printing technology during clinical translation. We summarize the latest advancements in non-traditional materials and advanced printing techniques, emphasizing the importance of integrating organ-like technologies with bioprinting. This combined approach enables more precise simulation of natural tissue structure and function. Our aim in writing this review is to propose effective strategies to address these challenges and promote the clinical translation of 3D-printed scaffolds for bone defect treatment. Graphical abstract
- Published
- 2024
- Full Text
- View/download PDF
5. Highly efficient AlGaN-based deep-ultraviolet light-emitting diodes: from bandgap engineering to device craft
- Author
-
Xu Liu, Zhenxing Lv, Zhefu Liao, Yuechang Sun, Ziqi Zhang, Ke Sun, Qianxi Zhou, Bin Tang, Hansong Geng, Shengli Qi, and Shengjun Zhou
- Subjects
Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
Abstract AlGaN-based light-emitting diodes (LEDs) operating in the deep-ultraviolet (DUV) spectral range (210–280 nm) have demonstrated potential applications in physical sterilization. However, the poor external quantum efficiency (EQE) hinders further advances in the emission performance of AlGaN-based DUV LEDs. Here, we demonstrate the performance of 270-nm AlGaN-based DUV LEDs beyond the state-of-the-art by exploiting the innovative combination of bandgap engineering and device craft. By adopting tailored multiple quantum wells (MQWs), a reflective Al reflector, a low-optical-loss tunneling junction (TJ) and a dielectric SiO2 insertion structure (IS-SiO2), outstanding light output powers (LOPs) of 140.1 mW are achieved in our DUV LEDs at 850 mA. The EQEs of our DUV LEDs are 4.5 times greater than those of their conventional counterparts. This comprehensive approach overcomes the major difficulties commonly faced in the pursuit of high-performance AlGaN-based DUV LEDs, such as strong quantum-confined Stark effect (QCSE), severe optical absorption in the p-electrode/ohmic contact layer and poor transverse magnetic (TM)-polarized light extraction. Furthermore, the on-wafer electroluminescence characterization validated the scalability of our DUV LEDs to larger production scales. Our work is promising for the development of highly efficient AlGaN-based DUV LEDs.
- Published
- 2024
- Full Text
- View/download PDF
6. Properties of Casting Al-Cu Alloy Modified by Mixed Rare Earth (La, Ce) and its Mechanism Analyzed
- Author
-
Xin Li, Medetbek Uulu Nurtilek, Ziqi Zhang, Lixia Wang, Quan Wu, Peixuan Mao, and Rong Li
- Subjects
cast aluminum alloy ,mechanical properties ,re modification ,simulation calculations ,mechanism analysis ,Technology (General) ,T1-995 - Abstract
To improve the mechanical properties of casting aluminum-copper alloy, the mixed rare earth (RE) was added to ZL206 and its properties and the enhanced mechanism of alloy were researched. The results showed that the strength and hardness of the composite were improved by 10.2% and 6.2%, respectively. After adding mixed RE, which was led by the heterogeneous enrichment area blocking the growth of the α-Al phase and making grain refinement during the solidification process. The simulation results of RE surface adsorption models by first principles also showed that the elastic constant calculation improved the bulk modulus, shear modulus, and Young's modulus of the material. The addition of mixed RE enhances the strength and hardness, although it adversely affects toughness and reduces the machining index. Also, the work function decreased, and the Fermi level increased, reflecting that the electron locality on each band was strong and the bonding state of the alloy system was covalent, which showed that the corrosion resistance was enhanced after adding mixed RE. It provides a new method for the mechanism of RE-modified aluminum-copper alloys and expands the direction of cast aluminum-copper alloy modification.
- Published
- 2024
- Full Text
- View/download PDF
7. Association between periodontal disease and atherosclerosis: a bibliometric analysis
- Author
-
Haoxiang Chang, Yahui Wang, Ziqi Zhang, Zhongqian Mi, Xinjie Qiu, Miaomiao Zhao, Chong Wang, Xue Bai, and Xiuyun Ren
- Subjects
periodontal disease (PD) ,atherosclerosis ,bibliometrics ,inflammation ,Porphyromonas gingivalis (P. gingivalis) ,mechanisms ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
BackgroundIn recent years, the relationship between periodontal disease (PD) and atherosclerosis (AS) has garnered significant scholarly attention. Chronic inflammation induced by PD may promote the onset and progression of AS through multiple mechanisms. Given the increasing global incidence of both PD and AS, which adversely affects patients’ quality of life and longevity, further investigation into the interplay between PD and AS is of substantial clinical importance. This study aims to conduct a comprehensive analysis of the association between PD and AS using bibliometric methods.MethodsArticles and reviews on the association between PD and AS were retrieved from the Web of Science Core Collection (WOSCC) on June 1, 2023. Bibliometric and knowledge mapping analyses were conducted using CiteSpace [6.3.R1 (64-bit) Advanced].ResultsThrough a bibliometric analysis of the literature published between 2000 and 2023 on the PD-AS relationship, we identified 1,572 relevant studies. The results show a steadily increasing number of studies on this topic annually, with a significant upward trend after 2002. Keyword analysis reveals “atherosclerosis,” “periodontal disease,” “cardiovascular disease,” “Porphyromonas gingivalis,” and “periodontal pathogens” as research hotspots. Collaboration network analysis highlights the United States as the primary contributor to research in this field. Co-citation analysis shows that J Periodontol, J Clin Periodontol, and Circulation are the most frequently cited journals, reflecting their support for research in this area. Document co-citation analysis identifies several high-impact studies focusing on how systemic inflammation induced by periodontitis promotes AS. This study uncovers development trends and research hotspots in the PD-AS relationship and emphasizes the role of international collaboration and high-impact journals in advancing this field. These insights provide valuable references and guidance for future research.ConclusionPD and AS are global epidemics causing significant distress and imposing a substantial burden. Research on the PD-AS relationship is evolving rapidly and continues to be a critical focus. Elucidating the mechanisms linking PD and AS represents an emerging trend, providing valuable references for future studies.
- Published
- 2024
- Full Text
- View/download PDF
8. Association of coexposure to perfluoroalkyl and polyfluoroalkyl compounds and heavy metals with pregnancy loss and reproductive lifespan: The mediating role of cholesterol
- Author
-
Hua Fang, Dai Lin, Ziqi Zhang, Haoting Chen, Zixin Zheng, Dongdong Jiang, and Wenxiang Wang
- Subjects
Perfluoroalkyl and polyfluoroalkyl substances (PFASs) ,Heavy metals ,Pregnancy loss ,Reproductive lifespan ,Interaction ,Environmental pollution ,TD172-193.5 ,Environmental sciences ,GE1-350 - Abstract
Previous studies have demonstrated the toxic effects of per- and polyfluoroalkyl substances (PFASs) and heavy metals on the reproductive system. However, the interactions and combined effects of these substances remain unexplored. This study utilizes data from the National Health and Nutrition Examination Survey to investigate the associations between coexposure to four types of PFASs, lead (Pb), mercury (Hg) and self-reported pregnancy loss and reproductive lifespan in females. Genes associated with these substances and abortion were identified via the Comparative Toxicogenomics Database. The results revealed that Ln-PFOA (IRR=1.88, 95 % CI=1.42–2.50, Ln--: log transformed), Ln-PFOS (IRR=1.58, 95 % CI=1.12–2.22), Ln-PFHxS (IRR=1.99, 95 % CI=1.57–2.52), and Ln-Hg (IRR=1.92, 95 % CI=1.41–2.43) were positively associated with the risk of pregnancy loss. Ln-PFOA (β=1.27, 95 % CI=0.28–2.27), Ln-PFOS (β=1.01, 95 % CI=0.39–1.63), Ln-PFHxS (β=0.71, 95 % CI=0.12–1.63), Ln-PFNA (β=1.15, 95 % CI=0.23–2.08), Ln-Pb (β=3.87, 95 % CI=2.58–5.15), and Ln-Hg (β=1.01, 95 % CI=0.39–1.64) exposures were positively associated with reproductive lifespan. The mixed and overall effects of coexposure to PFASs and heavy metals were positively correlated with the risk of pregnancy loss and reproductive lifespan. Cholesterol partially mediated the association with the risk of pregnancy loss, whereas delay in menopause fully mediated the association with reproductive lifespan. Significant additive interactions were observed between PFOA and Pb and between PFOS, PFHxS, PFNA and Hg at high levels of coexposure. Thirty-nine overlapping genes associated with abortion were identified for these substances, and further analyses revealed that these genes significantly interact and may contribute to abortion through oxidative stress.
- Published
- 2024
- Full Text
- View/download PDF
9. The role of cuproptosis in gastric cancer
- Author
-
Yixian Li, Wenhao Sun, Shaolin Yuan, Xinxin Liu, Ziqi Zhang, Renjun Gu, Pengfei Li, and Xin Gu
- Subjects
cuproptosis ,gastric cancer ,mechanism ,immune ,therapies ,Immunologic diseases. Allergy ,RC581-607 - Abstract
As a biologically essential transition metal, copper is widely involved in various enzymatic reactions and crucial biological processes in the body. It plays an increasingly important role in maintaining normal cellular metabolism and supporting the growth and development of the human body. As a trace element, copper maintains the dynamic balance of its concentration in body fluids through active homeostatic mechanisms. Both excess and deficiency of copper ions can impair cell function, ultimately leading to cell damage and death. Cuproptosis is a novel form of cell death where copper ions cause cell death by directly binding to the lipoylated components of the citric acid cycle (CAC) in mitochondrial respiration and interfering with the levels of iron-sulfur cluster (Fe-S cluster) proteins, ultimately causing protein toxic stress. Its primary characteristics are Cu2+ concentration dependence and high expression in mitochondrial respiratory cells. Recent research has revealed that, compared to other forms of programmed cell death such as apoptosis, necrosis, and autophagy, cuproptosis has unique morphological and biochemical features. Cuproptosis is associated with the occurrence and development of various diseases, including cancer, neurodegenerative diseases, and cardiovascular diseases. This article focuses on a review of the relevance of cuproptosis in gastric cancer (GC).
- Published
- 2024
- Full Text
- View/download PDF
10. Comprehensive understanding of glioblastoma molecular phenotypes: classification, characteristics, and transition
- Author
-
Can Xu, Pengyu Hou, Xiang Li, Menglin Xiao, Ziqi Zhang, Ziru Li, Jianglong Xu, Guoming Liu, Yanli Tan, and Chuan Fang
- Subjects
glioblastoma ,molecular phenotype ,classification ,characteristic ,mesenchymal transition ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Among central nervous system-associated malignancies, glioblastoma (GBM) is the most common and has the highest mortality rate. The high heterogeneity of GBM cell types and the complex tumor microenvironment frequently lead to tumor recurrence and sudden relapse in patients treated with temozolomide. In precision medicine, research on GBM treatment is increasingly focusing on molecular subtyping to precisely characterize the cellular and molecular heterogeneity, as well as the refractory nature of GBM toward therapy. Deep understanding of the different molecular expression patterns of GBM subtypes is critical. Researchers have recently proposed tetra fractional or tripartite methods for detecting GBM molecular subtypes. The various molecular subtypes of GBM show significant differences in gene expression patterns and biological behaviors. These subtypes also exhibit high plasticity in their regulatory pathways, oncogene expression, tumor microenvironment alterations, and differential responses to standard therapy. Herein, we summarize the current molecular typing scheme of GBM and the major molecular/genetic characteristics of each subtype. Furthermore, we review the mesenchymal transition mechanisms of GBM under various regulators.
- Published
- 2024
- Full Text
- View/download PDF
11. Dynamics of evolutionary succession and coordination between opposite adaptations in cuckoo hosts under antagonistic coevolution
- Author
-
Canchao Yang and Ziqi Zhang
- Subjects
Biology (General) ,QH301-705.5 - Abstract
Abstract Adaptations are driven by specific natural selection pressures throughout biological evolution. However, these cannot inherently align with future shifts in selection dynamics, thus manifesting in opposing directions. We performed field experiments on cuckoo hosts to investigate the coexistence and conflict between two evolutionarily successive but opposing behavioral adaptations—egg retrieval and rejection. Our findings provide key insights. (1) Egg rejection against brood parasites in hosts reshapes egg retrieval to flexible reactions—retrieval, ignoring, or outright rejection of foreign eggs outside the nest cup, departing from instinctual retrieval. (2) Parasitism pressure and egg mimicry by parasites remarkably alter the proportions of the three host reactions. Host species with higher parasitism pressure exhibit frequent and rapid rejection of non-mimetic foreign eggs and reduced ignoring or retrieval responses. Conversely, heightened egg mimicry enhances retrieval behaviors while diminishing ignoring responses. (3) Cuckoos employ consistent mechanisms for rejecting foreign eggs inside or outside the nest cup. Direct rejection of eggs outside the nest cup shows that rejection precedes retrieval, indicating prioritization of specific adaptation over instinct. (4) Cuckoo hosts navigate the conflict between the intentions and motivations associated with egg rejection and retrieval by ignoring foreign eggs, a specific outcome of the rejection–retrieval tradeoff.
- Published
- 2024
- Full Text
- View/download PDF
12. Single-atom platinum with asymmetric coordination environment on fully conjugated covalent organic framework for efficient electrocatalysis
- Author
-
Ziqi Zhang, Zhe Zhang, Cailing Chen, Rui Wang, Minggang Xie, Sheng Wan, Ruige Zhang, Linchuan Cong, Haiyan Lu, Yu Han, Wei Xing, Zhan Shi, and Shouhua Feng
- Subjects
Science - Abstract
Abstract Two-dimensional (2D) covalent organic frameworks (COFs) and their derivatives have been widely applied as electrocatalysts owing to their unique nanoscale pore configurations, stable periodic structures, abundant coordination sites and high surface area. This work aims to construct a non-thermodynamically stable Pt-N2 coordination active site by electrochemically modifying platinum (Pt) single atoms into a fully conjugated 2D COF as conductive agent-free and pyrolysis-free electrocatalyst for the hydrogen evolution reaction (HER). In addition to maximizing atomic utilization, single-atom catalysts with definite structures can be used to investigate catalytic mechanisms and structure-activity relationships. In this work, in-situ characterizations and theoretical calculations reveal that a nitrogen-rich graphene analogue COF not only exhibits a favorable metal-support effect for Pt, adjusting the binding energy between Pt sites to H* intermediates by forming unique Pt-N2 instead of the typical Pt-N4 coordination environment, but also enhances electron transport ability and structural stability, showing both conductivity and stability in acidic environments.
- Published
- 2024
- Full Text
- View/download PDF
13. Influence of nano-BN inclusion and mechanism involved on aluminium-copper alloy
- Author
-
Ziqi Zhang, Qi Zeng, Ning Wang, Lixia Wang, Quan Wu, Xin Li, Jiao Tang, and Rong Li
- Subjects
Medicine ,Science - Abstract
Abstract Taking advantage of the high specific surface area of the nanoparticles, boron nitride (BN) nanoparticles were incorporated into the semi-solidified aluminium-copper alloy Al–5Cu–Mn (ZL201) system during the casting process, and its properties and enhancement mechanism were studied. The results shown that the BN in the new composite material is more uniformly distributed in the second phase (Al2Cu), which can promote grain refinement and enhance the bonding with the aluminium-based interface, and the formation of stable phases such as AlB2, AlN, CuN, etc. makes the tensile strength and hardness of the material to be significantly improved (8.5%, 10.2%, respectively). The mechanism of the action of BN in Al2Cu was analyzed by establishing an atomic model and after calculation: BN can undergo strong adsorption on the surface of Al2Cu (0 0 1), and the adsorption energy is lower at the bridge sites on the two cut-off surfaces, which makes the binding of BN to the aluminum base more stable. The charge transfer between B, N and each atom of the matrix can promote the formation of strong covalent bonds Al–N, Cu–N and Al–B bonds, which can increase the dislocation density and hinder the grain boundary slip within the alloy.
- Published
- 2024
- Full Text
- View/download PDF
14. Association between gut microbiota and diabetic microvascular complications: a two-sample Mendelian randomization study
- Author
-
Peipei Zhou, Zhenning Hao, Yu Chen, Ziqi Zhang, Weilong Xu, and Jiangyi Yu
- Subjects
diabetic kidney disease ,diabetic microvascular complications ,diabetic neuropathy ,diabetic retinopathy ,Mendelian randomization ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
BackgroundGut microbiota (GM) homeostasis in the human body is closely associated with health, which can be used as a regulator for preventing the onset and progression of disease. Diabetic microvascular complications bring about not only a huge economic burden to society, but also miserable mental and physical pain. Thus, alteration of the GM may be a method to delay diabetic microvascular complications.ObjectiveA two-sample Mendelian randomization (MR) analysis was conducted to reveal the causal inference between GM and three core diabetic microvascular complications, namely, diabetic kidney disease (DKD), diabetic retinopathy (DR), and diabetic neuropathy (DNP).MethodsFirst, genome-wide association study (GWAS) summary statistics for GM from the MiBioGen consortium and three main diabetic microvascular complications acquired from the FinnGen research project were assessed. Second, a forward MR analysis was conducted to assess the causality of GM on the risk of DKD, DR, and DNP. Third, a series of sensitivity studies, such as heterogeneity tests, pleiotropy evaluations, and leave-one-out analyses, were further conducted to assess the accuracy of MR analysis. Finally, Steiger tests and reverse MR analyses were performed to appraise the possibility of reverse causation.ResultsA total of 2,092 single-nucleotide polymorphisms related to 196 bacterial traits were selected as instrumental variables. This two-sample MR analysis provided strongly reasonable evidence that 28 genetically predicted abundance of specific GM that played non-negligible roles in the occurrence of DKD, DR, and DNP complications were causally associated with 23 GM, the odds ratio of which generally ranged from 0.9 to 1.1. Further sensitivity analysis indicated low heterogeneity, low pleiotropy, and high reliability of the causal estimates.ConclusionThe study raised the possibility that GM may be a potential target to prevent and delay the progression of diabetic microvascular complications. Further experiments of GM therapy on diabetic microvascular complications are warranted to clarify their effects and specific mechanisms.
- Published
- 2024
- Full Text
- View/download PDF
15. Effects of cadmium on the growth, muscle composition, digestion, gene expression of antioxidant and lipid metabolism in juvenile tilapia (Oreochromis niloticus)
- Author
-
Qin Zhang, Yi Xie, Rongxin Qin, Enhao Huang, Ziqi Zhang, Jiang Zhou, Dongsheng Liu, Liuqing Meng, Yongqiang Liu, and Tong Tong
- Subjects
growth ,antioxidant ,lipid metabolism ,cadmium ,tilapia ,Science ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Abstract
Cadmium could induce various degrees of harm to aquatic organisms. A 30-day feeding trial was conducted to investigate the effects of cadmium on growth, muscle composition, digestive enzyme activity, gene expression of antioxidants and lipid metabolism in juvenile genetic improvement of farmed tilapia (GIFT, Oreochromis niloticus, Initial weight: 21.36 ± 0.24 g). Four cadmium concentrations of aquaculture water were designed: 0, 0.2, 0.4, and 0.6 mg/L Cd2+. The main results are as follows: Compared with the control group (0 mg/L Cd2+), the weight gain rate (WGR), specific growth rate (SGR), daily growth index (DGI), and spleen index (SI) of juvenile GIFT under cadmium stress were significantly decreased (p< 0.05). The contents of crude protein and crude lipid in muscle were significantly decreased (p< 0.05), and the ash was significantly increased (p< 0.05). The activities of trypsin, lipase, and α-amylase in the intestinal were significantly decreased (p< 0.05). The relative expression levels of carnitine palmityl transferase 1 (cpt-1), peroxisome proliferator-activated receptor α (pparα), pparγ, hormone-sensitive lipase (hsl), lipoprotein lipase (lpl), malate dehydrogenase (mdh), leptin (lep), fatty acid synthetase (fas), cholesterol response element binding protein 1 (srebp1), squalene cyclooxygenase (sqle), and stearoyl-CoA desaturase (scd) genes in liver were significantly decreased (p< 0.05). The relative expression levels of catalase (cat), superoxide dismutase (sod), glutathione S-transferase (gst), and glutathione peroxidase (gsh-px) genes in the liver were significantly decreased (p< 0.05). In conclusion, exposure to cadmium stress could impact growth, muscle composition, digestive enzyme activity, gene expression of antioxidant and lipid metabolism in juvenile GIFT.
- Published
- 2024
- Full Text
- View/download PDF
16. Co-utilization of wastewater sludge and heavy metals for single-atom electrocatalytic reduction of gaseous CO2
- Author
-
Baiqin Zhou, Zhida Li, Xinyue He, Chunyue Zhang, Shanshan Pi, Min Yang, Wei Zhang, Guifeng Li, Ziqi Zhang, and Lu Lu
- Subjects
Catalysis ,Electrochemical energy conversion ,Science - Abstract
Summary: Synergetic management of waste activated sludge, heavy metals (HMs) and CO2 for their valorization and cyclic utilization is rarely reported. Herein, we employed sludge-derived extracellular polymeric substances (EPS) and HMs in wastewater to fabricate a gas diffusion electrode (GDE) for electrochemical CO2 reduction. This approach atomically dispersed Ni at each nanofiber of the GDE. Abundant N element in the EPS proved to play a key role in the formation of Nx-Ni (mixture of N3-Ni and N4-Ni) sites for highly efficient CO2 to CO conversion. The atomical Ni3+ shows high catalytic activity. Direct gaseous CO2 reduction in a membrane electrode assembly generated a current density up to 50 mA·cm−2 with CO:H2 ratio of ∼100 and ∼75% FECO under 2.69 cell voltage. This strategy takes advantage of all waste streams generated on site and consolidates traditionally separated treatment processes to save costs, produces value-added products and generates carbon benefits during wastewater treatment.
- Published
- 2024
- Full Text
- View/download PDF
17. The moderating effect of perceived organizational support on presenteeism related to the inclusive leadership
- Author
-
Ting Wang, Hui Qin, Ziqi Zhang, and Yonghao Qin
- Subjects
Presenteeism ,Perceived organizational support ,Inclusive leadership ,Clinical nurse ,Nursing ,RT1-120 - Abstract
Abstract Aim This study aimed to assess inclusive leadership and presenteeism among clinical nurses and to examine the moderating effect of perceived organizational support on presenteeism related to the inclusive leadership among nurses. Background Nurses’ presenteeism has become common. In hospitals, inclusive leadership is an acknowledged leadership style that has a positive influence on nurses. However, little emphasis has been paid to research on their relationships and moderating effect. Methods A cross-sectional study was undertaken to assess 2222 nurses using a general information questionnaire, Stanford Presenteeism Scale (SPS-6), Perceived Organisational Support Scale, and Inclusive Leadership Scale. Study variables were analyzed using descriptive statistics, correlation, and structural equation modelling (SEM). Results Presenteeism was relatively severe among clinical nurses. There were correlations between inclusive leadership, perceived organizational support and presenteeism. Perceived organizational support moderated the relationship between inclusive leadership and presenteeism. Discussion and conclusion Nursing managers should actively adopt an inclusive leadership style and improve nurses' sense of perceived organizational support to improve clinical nurses' presenteeism behaviors. Implications for nursing policy and practice Healthcare organizations and nursing managers should pay attention to the psychological needs of their nurses, provide complete understanding and support, encourage staff to actively participate in their work and contribute new ideas and opinions, reduce the incidence of presenteeism, and improve nurses' sense of well-being at work.
- Published
- 2024
- Full Text
- View/download PDF
18. Application and research progress of WO3 hydrate in the field of photocatalysis
- Author
-
Fangyuan ZHANG, Weiguang HAN, Xue ZHANG, Yandong SUN, Ziqi ZHANG, and Shengqi GUO
- Subjects
wo3·nh2o ,photocatalysis ,prepare method ,modification strategy ,application ,Mining engineering. Metallurgy ,TN1-997 ,Environmental engineering ,TA170-171 - Abstract
Photocatalysis, recognized as an eco-friendly and efficient energy conversion and utilization technology, has garnered widespread attention owing to its potential to address environmental and energy-related challenges. Its capacity to harness sunlight as an energy source makes it particularly promising. Photocatalytic materials are central to the advancement of photocatalytic technology, and the emergence of new visible-light-responsive photocatalysts represents a noteworthy trend in this field. WO3 is a semiconductor material composed of transition-metal oxides. It exhibits excellent responsiveness to visible light and is considered to be an ideal photocatalytic material. However, the persistent issue of low photogenerated charge separation efficiency has hindered their development. In contrast to pure WO3, its hydrated form, WO3·nH2O, has garnered considerable interest from researchers because of its enhanced charge transfer and separation efficiency. This study comprehensively reviews recent applications and research progress in photocatalysis using WO3·nH2O. This study introduces the crystal structure of WO3·nH2O photocatalysts and analyzes the impact of crystal water on WO3. This analysis covered the crystal structure, charge transfer, separation, and band structure. The study then extensively discusses the preparation methods for WO3·nH2O and modified photocatalysis based on WO3·nH2O, with particular emphasis on elucidating these methods. Finally, this study summarizes the diverse applications of WO3·nH2O and its composite materials in water desorption for hydrogen production, CO2 reduction, and dye pollutant degradation. In addition, it delves into the prospects for future development of these materials. The overarching goal of this study was to serve as a valuable reference for advancing WO3·nH2O photocatalytic systems.
- Published
- 2024
- Full Text
- View/download PDF
19. scDisInFact: disentangled learning for integration and prediction of multi-batch multi-condition single-cell RNA-sequencing data
- Author
-
Ziqi Zhang, Xinye Zhao, Mehak Bindra, Peng Qiu, and Xiuwei Zhang
- Subjects
Science - Abstract
Abstract Single-cell RNA-sequencing (scRNA-seq) has been widely used for disease studies, where sample batches are collected from donors under different conditions including demographic groups, disease stages, and drug treatments. It is worth noting that the differences among sample batches in such a study are a mixture of technical confounders caused by batch effect and biological variations caused by condition effect. However, current batch effect removal methods often eliminate both technical batch effect and meaningful condition effect, while perturbation prediction methods solely focus on condition effect, resulting in inaccurate gene expression predictions due to unaccounted batch effect. Here we introduce scDisInFact, a deep learning framework that models both batch effect and condition effect in scRNA-seq data. scDisInFact learns latent factors that disentangle condition effect from batch effect, enabling it to simultaneously perform three tasks: batch effect removal, condition-associated key gene detection, and perturbation prediction. We evaluate scDisInFact on both simulated and real datasets, and compare its performance with baseline methods for each task. Our results demonstrate that scDisInFact outperforms existing methods that focus on individual tasks, providing a more comprehensive and accurate approach for integrating and predicting multi-batch multi-condition single-cell RNA-sequencing data.
- Published
- 2024
- Full Text
- View/download PDF
20. Radiographic grid for locating foreign bodies in maxillofacial emergency trauma
- Author
-
Ziqi Zhang, Mingliang Yang, and Ran Zhang
- Subjects
Foreign bodies ,Radiography ,Radiographic grid ,CT ,Dentistry ,RK1-715 - Abstract
Abstract Objectives The accurate localization of the foreign bodies (FBs) is essential. This work presents a new noninvasive technique for subcutaneous metallic FBs under a radiographic grid, a system that simplifies the localization of facial FBs removal using a grid with embedded reference points. Methods This work designed a retrospective study to evaluate the effect of a radiographic grid on FBs removal surgery. All patients who met the inclusion criteria and attended the Hospital of Stomatology of China Medical University from January 2022 to June 2023 were enrolled and randomly divided into grid and non-grid groups. The assessment of facial swelling, the primary indicator, was conducted on days 2 and 7 post-surgery. The variables were analyzed using the Student t test and a repeated-measures general linear model. Results The study sample consisted of 20 patients, with 14 males (70%) and 6 females (30%), who had an average age of 30.30 ± 5.38. The average time of operation was 1.85 ± 0.66 h (range 0.7 to 3.2). In the present cases in this report, of the 20 patients’ FBs, 14 were metal, 5 were glass, and 1 was residual root. And the FBs were surgically removed with no postoperative complications. Through comparison, it was found that the degree of swelling on day 2 postoperatively was significantly different between the grid group and the non-grid group (P
- Published
- 2024
- Full Text
- View/download PDF
21. The identification, characterization, and management of Rotylenchulus reniformis on Cucumis melo in China
- Author
-
Qianqian Shi, Xinyue Cai, Ziqi Zhang, Wenwen Song, Chen Liang, Fangmeng Duan, and Honghai Zhao
- Subjects
Rotylenchulus reniformis ,Melon plants ,Control ,Rhizosphere microbiota ,Plant culture ,SB1-1110 - Abstract
Abstract The reniform nematode, Rotylenchulus reniformis, is a sedentary root parasite that poses a significant threat to agricultural production in tropical and subtropical regions worldwide. In 2021–2022, a population of R. reniformis was identified in a melon greenhouse in Jimo District, Qingdao, China. To characterize this population, we employed morphological, morphometric, and molecular methods, which confirmed the identity of the nematodes as R. reniformis. Our investigation revealed that R. reniformis successfully infected the roots of melon plants and laid eggs, which could have led to significant crop damage. This report represents the first documented example of R. reniformis infecting melon plants in China. We evaluated several control strategies to combat this nematode, and our results indicated that soil solarization and the use of fosthiazate or chitooligosaccharide copper in combination with soil solarization were effective measures for managing R. reniformis in a greenhouse setting. In addition, combining soil solarization with chitooligosaccharide copper promoted melon plant growth and increased the relative abundance of microorganisms with biocontrol potential.
- Published
- 2023
- Full Text
- View/download PDF
22. MoMkk1 and MoAtg1 dichotomously regulating autophagy and pathogenicity through MoAtg9 phosphorylation in Magnaporthe oryzae
- Author
-
Yun Kong, Pusheng Guo, Jiayun Xu, Jiaxu Li, Miao Wu, Ziqi Zhang, Yifan Wang, Xinyu Liu, Leiyun Yang, Muxing Liu, Haifeng Zhang, Ping Wang, and Zhengguang Zhang
- Subjects
Magnaporthe oryzae ,cell wall integrity ,autophagy ,protein phosphorylation ,phospholipid ,Microbiology ,QR1-502 - Abstract
ABSTRACTAutophagy is a central biodegradation pathway critical in eliminating intracellular cargo to maintain cellular homeostasis and improve stress resistance. At the same time, the key component of the mitogen-activated protein kinase cascade regulating cell wall integrity signaling MoMkk1 has an essential role in the autophagy of the rice blast fungus Magnaporthe oryzae. Still, the mechanism of how MoMkk1 regulates autophagy is unclear. Interestingly, we found that MoMkk1 regulates the autophagy protein MoAtg9 through phosphorylation. MoAtg9 is a transmembrane protein subjected to phosphorylation by autophagy-related protein kinase MoAtg1. Here, we provide evidence demonstrating that MoMkk1-dependent MoAtg9 phosphorylation is required for phospholipid translocation during isolation membrane stages of autophagosome formation, an autophagic process essential for the development and pathogenicity of the fungus. In contrast, MoAtg1-dependent phosphorylation of MoAtg9 negatively regulates this process, also impacting growth and pathogenicity. Our studies are the first to demonstrate that MoAtg9 is subject to MoMkk1 regulation through protein phosphorylation and that MoMkk1 and MoAtg1 dichotomously regulate autophagy to underlie the growth and pathogenicity of M. oryzae.IMPORTANCEMagnaporthe oryzae utilizes multiple signaling pathways to promote colonization of host plants. MoMkk1, a cell wall integrity signaling kinase, plays an essential role in autophagy governed by a highly conserved autophagy kinase MoAtg1-mediated pathway. How MoMkk1 regulates autophagy in coordination with MoAtg1 remains elusive. Here, we provide evidence that MoMkk1 phosphorylates MoAtg9 to positively regulate phospholipid translocation during the isolation membrane or smaller membrane structures stage of autophagosome formation. This is in contrast to the negative regulation of MoAtg9 by MoAtg1 for the same process. Intriguingly, MoMkk1-mediated MoAtg9 phosphorylation enhances the fungal infection of rice, whereas MoAtg1-dependant MoAtg9 phosphorylation significantly attenuates it. Taken together, we revealed a novel mechanism of autophagy and virulence regulation by demonstrating the dichotomous functions of MoMkk1 and MoAtg1 in the regulation of fungal autophagy and pathogenicity.
- Published
- 2024
- Full Text
- View/download PDF
23. Nitrogen‐doped microporous graphite‐enhanced copper plasmonic effect for solar evaporation
- Author
-
Xintao Wu, Chengcheng Li, Ziqi Zhang, Yang Cao, Jieqiong Wang, Xinlong Tian, Zhongxin Liu, Yijun Shen, Mingxin Zhang, and Wei Huang
- Subjects
nanoconfinement ,photothermal conversion materials ,plasmonic resonance ,seawater desalination ,solar evaporation ,Production of electric energy or power. Powerplants. Central stations ,TK1001-1841 - Abstract
Abstract Water scarcity is a global challenge, and solar evaporation technology offers a promising and eco‐friendly solution for freshwater production. Photothermal conversion materials (PCMs) are crucial for solar evaporation. Improving photothermal conversion efficiency and reducing water evaporation enthalpy are the two key strategies for the designing of PCMs. The desired PCMs that combine both of these properties remain a challenging task, even with the latest advancements in the field. Herein, we developed copper nanoparticles (NPs) with different conjugated nitrogen‐doped microporous carbon coatings (Cu@C–N) as PCMs. The microporous carbon enveloping layer provides a highly efficient pathway for water transport and a nanoconfined environment that protects Cu NPs and facilitates the evaporation of water clusters, reducing the enthalpy of water evaporation. Meanwhile, the conjugated nitrogen nodes form strong metal‐organic coordination bonds with the surface of copper NPs, acting as an energy bridge to achieve rapid energy transfer and provide high solar‐to‐vapor conversion efficiency. The Cu@C–N exhibited up to 89.4% solar‐to‐vapor conversion efficiency and an evaporation rate of 1.94 kg m−2 h−1 under one sun irradiation, outperforming conventional PCMs, including carbon‐based materials and semiconductor materials. These findings offer an efficient design scheme for high‐performance PCMs essential for solar evaporators to address global water scarcity.
- Published
- 2024
- Full Text
- View/download PDF
24. DTTZ suppresses ferroptosis and reverses mitochondrial dysfunction in normal tissues affected by chemotherapy
- Author
-
Yuwei Yang, Yuanfang Chen, Haikang Tang, Ziqi Zhang, Xiaoliang Zhou, and Wenqing Xu
- Subjects
Chemotherapy ,Cytoprotectant ,Ferroptosis ,Mitochondria ,Radiotherapy ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Conventional antineoplastic therapies cause severe normal tissue damage and existing cytoprotectants with acute toxicities or potential tumor protection limit their clinical application. We evaluated the selective cytoprotection of 2,2-dimethylthiazolidine hydrochloride in this study, which could protect normal tissue toxicity without interfering antineoplastic therapies. By using diverse cell lines and A549 xenograft model, we discovered a synthetic aminothiol 2,2-dimethylthiazolidine hydrochloride selectively diminished normal cellular ferroptosis via SystemXc-/Glutathione Peroxidase 4 pathway upon antineoplastic therapies without interfering the anticancer efficacy. We revealed the malignant and non-malignant tissues presenting different energy metabolism patterns. And cisplatin induces disparate replicative stress, contributing to the distinguishable cytoprotection of 2,2-dimethylthiazolidine in normal and tumor cells. The compound pre-application could mitigate cisplatin-induced normal cellular mitochondrial oxidative phosphorylation (OXPHOS) dysfunction. Pharmacologic ablation of mitochondria reversed 2,2-dimethylthiazolidine chemoprotection against cisplatin in the normal cell line. Combined, these results provide a potential therapeutic adjuvant to selectively diminish normal tissue damages retaining antineoplastic efficacy.
- Published
- 2024
- Full Text
- View/download PDF
25. Concretized structural evolution supported assembly-controlled film-forming kinetics in slot-die coated organic photovoltaics
- Author
-
Hao Zhang, Chenyang Tian, Ziqi Zhang, Meiling Xie, Jianqi Zhang, Lingyun Zhu, and Zhixiang Wei
- Subjects
Science - Abstract
Abstract Bulk-heterojunction structured small-area organic solar cells are approaching 20% power conversion efficiency, but the blurred film-forming kinetics in the fabrication of large-area devices causes significant PCE loss and restrains the potential of commercialization. Such blurring came from insufficient knowledge of structural evolution during the film-forming process. Here, we concretize the evolution process with structures detailed to the submolecular level by comprehensive investigations of in-situ UV-vis spectroscopy, Atomic Force Microscope, Grazing Incident Wide Angle X-ray Scattering, and molecular dynamic simulation. With such hierarchical structural knowledge, assembly-controlled film-forming kinetics is proposed to explain the whole picture. Such assembly is determined by molecule configuration and can be tuned via external conditions. Understanding this kinetics will contribute to screening large-area device fabrication conditions, and the detailed structural knowledge could inspire the future design of novel photovoltaic materials that are intrinsically excellent in large-area device fabrications.
- Published
- 2023
- Full Text
- View/download PDF
26. Comprehensive Screening and Validation of Stable Internal Reference Genes for Accurate qRT-PCR Analysis in Holotrichia parallela under Diverse Biological Conditions and Environmental Stresses
- Author
-
Zhongjun Gong, Jing Zhang, Qi Chen, Huiling Li, Ziqi Zhang, Yun Duan, Yueli Jiang, Tong Li, Jin Miao, and Yuqing Wu
- Subjects
Holotrichia parallela ,qRT-PCR ,reference gene screening ,stability validation ,Science - Abstract
Holotrichia parallela is among the world’s most destructive pests. For accurate qPCR and gene expression studies, the selection of stable and appropriate reference genes is crucial. However, a thorough evaluation of potential reference genes for use in H. parallela research is lacking. In this study, 11 reference genes (GAPDH, RPL32, RPL7A, RPS18, RPL13a, RPL18, Actin, RPS7, RPS3, VATB,and EF1A) were evaluated under different biological conditions and environmental stresses. The stability of 11 potential reference gene transcripts was evaluated through various computational tools, including geNorm, BestKeeper, NormFinder, theΔCt method, and the RefFinder program. Under various developmental stages and RNAi conditions, RPL18 and RPL13a exhibited the greatest stability. RPL13a, RPL18, and RPL32 were the most stable genes in both male and female adults. Under differing tissue conditions, RPL13a and RPS3 stood out as the most reliable. Moreover, under varying photoperiod conditions, RPL13a, RPS3 and RPL32 were the most stable genes. Lastly, Actin and RPL13a were the most stable genes across different temperatures. These findings offer essential criteria for selecting suitable reference genes across diverse experimental settings, thereby establishing a solid basis for accurate gene expression studies in H. parallela using RT-qPCR.
- Published
- 2024
- Full Text
- View/download PDF
27. Thermal Performance Improvement of Composite Phase-Change Storage Material of Octanoic Acid–Tetradecanol by Modified Expanded Graphite
- Author
-
Jin Tang, Yongfei Li, Yunxiu Ren, Zewen An, Ziqi Zhang, Laishun Yang, Weiwei Cui, and Cuiping Wang
- Subjects
composite phase-change material ,octanoic acid–tetradecanol ,surface modification of expanded graphite ,thermal conductivity ,multi-cycle melting–solidification ,Technology - Abstract
Phase-change cold storage technology is recommended as a solution for energy conservation and carbon neutrality in air conditioning systems of buildings. This study focuses on the development of binary composite phase-change materials comprising octanoic acid–tetradecanol (OA-TD). To enhance its thermal conductivity, expanded graphite (EG) was employed as an additive carrier, and the surface modification of EG particles using hexadecyltrimethoxysilane (HDTMOS) was attempted to make up for the instability and further to improve the performance of OA-TD/EG CPCMs. The OA-TD/EG-HDTMOS CPCMs were synthesized by EG mixed with EG-HDTMOS at a 1:1 mass ratio. The thermal performance and stability of the OA-TD/EG-HDTMOS CPCMs were thoroughly evaluated by multi-cycle melting–solidification and thermal conductivity measurements. The results revealed that the OA-TD mixture, when at a mass ratio of 77:23, exhibited a phase-transition temperature of 11.4 °C and a latent heat ranging from 150 to 155 J/g. Then, the OA-TD/EG-HDTMOS composite material, at a 12:1 mass ratio of OA-TD to EG-HDTMOS, solidified and melted at temperatures of 9.2 °C and 11.2 °C, with a latent heat ranging from 138 to 143 J/g, and significantly improved the thermal conductivity to 0.7 W/(m·K), representing a remarkable 133% increase compared to that of OA-TD alone. Even after undergoing 100 melting–solidification cycles, the OA-TD/EG-HDTMOS maintained superior phase-change thermal performance and stability, making it suitable for cold storage and energy conservation in air conditioning.
- Published
- 2024
- Full Text
- View/download PDF
28. Factors Influencing the Usage Frequency of Community Elderly Care Facilities and Their Functional Spaces: A Multilevel Based Study
- Author
-
Fang Wen, Yan Zhang, Pengcheng Du, Ziqi Zhang, Bo Zhang, and Yuyang Zhang
- Subjects
community elderly care facilities (CECF) ,community elderly care station (CECS) ,indoor space acceptance ,machine learning ,quality of service ,usage frequency ,Building construction ,TH1-9745 - Abstract
The construction of community elderly care facilities (CECF) is pivotal for promoting healthy aging and “aging in place” for older people. This study focuses on the low utilization rates of community elderly care facilities in the Dongcheng and Xicheng Districts, core areas of Beijing. The explainable machine learning method is used to analyze data across three dimensions: the elderly’s individual attributes, characteristics of the community elderly care station (CECS), and features of the built environment around CECS and subdistrict, to identify the important factors that influence the usage frequency of overall CECS and its different functional spaces, and also the correlation between factors and usage frequency of CECS. It shows that the most important factors are the features of CSCF, including the degree of space acceptance and satisfaction with services provided, which influence the usage frequency of nine functional spaces (R2 ≥ 0.68) and overall (R2 = 0.56). In addition, older people’s individual factors, such as age and physical condition, significantly influence the usage of specific spaces such as rehabilitation therapy rooms and assistive bathing rooms. The influence of built environment characteristics is relatively low, with factors such as the density of bus stations and housing prices within the subdistrict and the mean distance from CECF to the nearest subway stations being more important. These findings provide a reference for the construction of indoor environments, management of service quality, and optimal site selection for future community elderly care facilities.
- Published
- 2024
- Full Text
- View/download PDF
29. Fractal and Multifractal Analysis of Microscopic Pore Structure of UHPC Matrix Modified with Nano Silica
- Author
-
Dian Guan, Tinghong Pan, Rongxin Guo, Ya Wei, Rongqing Qi, Chaoshu Fu, Ziqi Zhang, and Yukai Zhu
- Subjects
ultra-high-performance concrete ,microscopic pore structure ,fractal theory ,multifractal analysis ,nano silica ,Thermodynamics ,QC310.15-319 ,Mathematics ,QA1-939 ,Analysis ,QA299.6-433 - Abstract
Nano silica (NS) has been found to have a positive impact on enhancing the microporous structure of Ultra-High-Performance Concrete (UHPC). However, there is a lack of effective methods to accurately characterize the regulatory improvement mechanism of NS on the pore structure of UHPC. In this study, our objective is to investigate the influence of NS on various characteristic parameters of the pore structure in UHPC, including porosity, average pore size, box fractal dimension, and multifractal spectral parameters. To analyze these effects, we employ a combination of X- CT image processing techniques and fractal theory. Furthermore, we conducted regression analysis using linear functions to explore the correlation between these parameters and the 28d compressive strength of UHPC. The experimental results demonstrate that NS promotes the refinement of matrix pore size, leading to a denser microstructure of the matrix. Fractal analysis revealed that the pore structure of NS-modified UHPC exhibited favorable fractal characteristics. The fractal dimension and multiple fractal parameters provided complementary insights into the pore structure of NS-modified UHPC from different perspectives. The fractal dimension described the global information, indicating that NS improved matrix defects and reduced the complexity of the pore structure. On the other hand, the multiple fractal parameters supplemented local information, highlighting how the increase in micropores contributed to the heterogeneity of the pore structure. The results of the correlation analysis indicate that the developed mathematical model has a good fit with the 28d compressive strength of UHPC.
- Published
- 2024
- Full Text
- View/download PDF
30. Conceptualization and numerical simulation of a karst subterranean river and its outlets using MODFLOW
- Author
-
Ziqi Zhang, Mo Xu, Cong Cao, Qiang Zhang, and Qiang Xia
- Subjects
karst conduit ,conduit equivalent porous medium coupling model ,modflow-cfp ,subterranean river ,Geology ,QE1-996.5 ,Engineering geology. Rock mechanics. Soil mechanics. Underground construction ,TA703-712 - Abstract
Objective In the set of 3D seepage simulation programs of MODFLOW, the Conduit Flow Process (CFP) module has been widely used to represent karst conduits and karst aquifers and provides an important tool for groundwater simulation in karst areas. Methods When using CFP module to conceptualize the subterranean river conduits and their outlets, there are two schemes for the conceptualization of the outlets: setting the subterranean river outlet in the conduit model (FH scheme) or in the equivalent porous medium (Dr scheme), whose simulation effects are to be evaluated. In this paper, a groundwater numerical model with conduit flow was constructed, taking the Jiangjia Subterranean River in Jinyun Mountain, Chongqing as an example. The outlets of the subterranean river were conceptualized by the aforementioned two schemes, and then the differences between the subsequent two simulations were analyzed and compared. Results The results show that the FH scheme is better than the Dr scheme. The fixed head setting in the FH scheme can achieve the effect of groundwater discharge in all segments of the subterranean river, while the drain setting in the Dr scheme only discharges groundwater in the upstream of the subterranean river conduit, then recharges the aquifer in the downstream, and finally, the groundwater is discharged in the drain unit. Conclusion The water balance analysis also demonstrates the advantage of the FH scheme in terms of the capacity of groundwater discharge and the function of aquifer storage.
- Published
- 2023
- Full Text
- View/download PDF
31. Simulation and Heat Treatment Process of Carbon Nanotube Modified Aluminum Alloy (ZL105)
- Author
-
Ziqi Zhang, Zhilin Pan, Rong Li, Qi Zeng, Yong Liu, and Quan Wu
- Subjects
cast aluminum alloy ,heat treatment ,cnts ,first principle ,mechanical performance ,Technology (General) ,T1-995 - Abstract
To further improve the mechanical properties of carbon nanotubes (CNTs) modified aluminum alloy (ZL105), the first principle was used to build the atomic structure of the alloy system and the alloy system was simulated by the VASP. After that, the heat treatment process of the cast aluminium alloy material with CNTs to enhance the alloy performance by the orthogonal experiment. The results of the research show that: (1) The energy status of the alloy system could be changed by adding the C atoms, but it did not affect the formation and structural stability of the alloy system, and the strong bond compounds formed by C atoms with other elements inside the solid solution structure can significantly affect the material properties. (2) The time of solid solution has the greatest influence on the performance of material that was modified by CNTs. The solution temperature and aging temperature were lower strength affection, and the aging time is the lowest affection. This paper provides a new research method of combining the atomic simulation with the casting experiment, which can provide the theoretical calculations to reduce the experiment times for the casting materials’ performance improvement.
- Published
- 2023
- Full Text
- View/download PDF
32. Quantification of pharyngeal airway space changes after two-jaw orthognathic surgery in skeletal class III patients
- Author
-
Ziqi Zhang, Shuze Wang, Jing Li, Zhijie Yang, Xia Zhang, and Xiaofeng Bai
- Subjects
Orthognathic surgery ,Pharyngeal airway space ,Skeletal class III malocclusion ,CT ,Dentistry ,RK1-715 - Abstract
Abstract Background Skeletal class III malocclusion is a common dentofacial deformity. Orthognathic treatment changes the position of the jaws and affects the shape of the upper airway to some extent. The aim of this study was to use multislice spiral computer tomography data and orthognathic knowledge to quantify the relationship between the amount of surgical movement of the maxilla or mandible in all three spatial planes and the changes in airway volume that occurred. Methods A retrospective study of 50 patients was conducted. Preoperative and postoperative linear changes related to skeletal movements of the maxilla and mandible were measured and compared to changes in the most constricted axial level (MCA) and its anteroposterior (MCA-AP) and transverse diameters (MCA-TV). Correlation tests and linear regression analysis were performed. Results Significant interactions were observed between the anterior vertical movement of the maxilla and the MCA-AP. The anteroposterior movement distance of the mandible was significantly correlated with changes in the oropharyngeal, velopharyngeal, total airway volume, MCA, MCA-AP, and MCA-TV. The change in the mandibular plane angle was significantly correlated with the change in velopharyngeal volume, total airway volume (nasopharynx, oropharynx, velopharynx), and MCA. The linear regression model showed that oropharyngeal volume decreased by 350.04 mm3, velopharyngeal volume decreased by 311.50 mm3, total airway volume decreased by 790.46 mm3, MCA decreased by 10.96 mm2 and MCA-AP decreased by 0.73 mm2 when point B was setback by 1 mm. Conclusions Anteroposterior mandibular control is the key to successful airway management in all patients. This study provides estimates of volume change per millimeter of setback to guide surgeons in treatment planning.
- Published
- 2023
- Full Text
- View/download PDF
33. Autophagy and cell wall integrity pathways coordinately regulate the development and pathogenicity through MoAtg4 phosphorylation in Magnaporthe oryzae.
- Author
-
Pusheng Guo, Yurong Wang, Jiayun Xu, Zhixiang Yang, Ziqi Zhang, Jinyi Qian, Jiexiong Hu, Ziyi Yin, Leiyun Yang, Muxing Liu, Xinyu Liu, Gang Li, Haifeng Zhang, Ryan Rumsey, Ping Wang, and Zhengguang Zhang
- Subjects
Immunologic diseases. Allergy ,RC581-607 ,Biology (General) ,QH301-705.5 - Abstract
Autophagy and Cell wall integrity (CWI) signaling are critical stress-responsive processes during fungal infection of host plants. In the rice blast fungus Magnaporthe oryzae, autophagy-related (ATG) proteins phosphorylate CWI kinases to regulate virulence; however, how autophagy interplays with CWI signaling to coordinate such regulation remains unknown. Here, we have identified the phosphorylation of ATG protein MoAtg4 as an important process in the coordination between autophagy and CWI in M. oryzae. The ATG kinase MoAtg1 phosphorylates MoAtg4 to inhibit the deconjugation and recycling of the key ATG protein MoAtg8. At the same time, MoMkk1, a core kinase of CWI, also phosphorylates MoAtg4 to attenuate the C-terminal cleavage of MoAtg8. Significantly, these two phosphorylation events maintain proper autophagy levels to coordinate the development and pathogenicity of the rice blast fungus.
- Published
- 2024
- Full Text
- View/download PDF
34. Efficacy and safety of Abelmoschus manihot capsule combined with ACEI/ARB on diabetic kidney disease: a systematic review and meta analysis
- Author
-
Ying Tan, Ziqi Zhang, Peipei Zhou, Qiling Zhang, Nan Li, Qianhua Yan, Liji Huang, and Jiangyi Yu
- Subjects
diabetic kidney disease ,Abelmoschus manihot ,renin-angiotensin-aldosterone system inhibitors ,systematic review ,meta-analysis ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Background: Diabetic kidney disease (DKD) is one of the most serious microvascular complications of diabetes, with the incidence rate increasing yearly, which is the leading cause of chronic kidney disease (CKD) and end-stage kidney disease. Abelmoschus Manihot capsule, as a proprietary Chinese patent medicine, is widely used for treating CKD in China. Currently, the combination of Abelmoschus Manihot (AM) capsule and renin-angiotensin-aldosterone system inhibitor (RASI) has gained popularity as a treatment option for DKD, with more and more randomized control trials (RCTs) in progress. However, the high-quality clinical evidence supporting its application in DKD is still insufficient.Aim of the study: To comprehensively and systematically evaluate the efficacy and safety of AM capsule combined with RASI in the treatment of DKD.Materials and methods: English and Chinese databases such as Pubmed, Cochrane Library, Embase, CNKI, SinoMed, WF, and VIP were searched to collect the RCTs of AM capsule in treatment of DKD. Then Two investigators independently reviewed and extracted data from the RCTs which met the inclusion criteria. The quality of the data was assessed using the Cochrane risk of bias assessment tool, and meta-analysis was performed using RevMan 5.4 software.Results: 32 RCTs with a total of 2,881 DKD patients (1,442 in the treatment group and 1,439 in the control group) were included. The study results showed that AM capsule combined with RASI could be more effective in decreasing 24h-UTP [MD = −442.05, 95% CI (−609.72, −274.38), p < 0.00001], UAER [MD = −30.53, 95% CI (−39.10, −21.96), p < 0.00001], UACR [MD = −157.93, 95% CI (−288.60, −27.25), p < 0.00001], Scr [MD = −6.80, 95% CI (−9.85, −3.74), p < 0.0001], and BUN [MD = −0.59, 95% CI (−1.07, −0.12), p = 0.01], compared to using RASI alone. According to the subgroup analyses, the combination of AM and ARB seems to be more effective in reducing UAER than the combination of ACEI, and the addition of AM may achieve a more significant clinical effect on decreasing Scr for DKD patients with 24h-UTP>2 g or Scr>110–133 μmol/L and >133 μmol/L. Furthermore, no additional adverse reactions were observed in the combination group [OR = 1.06; 95%CI: (0.66, 1.69), p = 0.82].Conclusion: Combining AM with RASI may be a superior strategy for DKD treatment compared to RASI monotherapy. However, due to significant heterogeneity, the results should be interpreted with great caution, and more high-quality RCTs with multi-centers, different stages of DKD, large sample sizes, and long follow-up periods are still needed to improve the evidence quality of AM for DKD in the future.Systematic Review Registration:https://www.crd.york.ac.uk/PROSPERO/#recordDetails; Identifier CRD42022351422
- Published
- 2024
- Full Text
- View/download PDF
35. Morphological profiling by high-throughput single-cell biophysical fractometry
- Author
-
Ziqi Zhang, Kelvin C. M. Lee, Dickson M. D. Siu, Michelle C. K. Lo, Queenie T. K. Lai, Edmund Y. Lam, and Kevin K. Tsia
- Subjects
Biology (General) ,QH301-705.5 - Abstract
Abstract Complex and irregular cell architecture is known to statistically exhibit fractal geometry, i.e., a pattern resembles a smaller part of itself. Although fractal variations in cells are proven to be closely associated with the disease-related phenotypes that are otherwise obscured in the standard cell-based assays, fractal analysis with single-cell precision remains largely unexplored. To close this gap, here we develop an image-based approach that quantifies a multitude of single-cell biophysical fractal-related properties at subcellular resolution. Taking together with its high-throughput single-cell imaging performance (~10,000 cells/sec), this technique, termed single-cell biophysical fractometry, offers sufficient statistical power for delineating the cellular heterogeneity, in the context of lung-cancer cell subtype classification, drug response assays and cell-cycle progression tracking. Further correlative fractal analysis shows that single-cell biophysical fractometry can enrich the standard morphological profiling depth and spearhead systematic fractal analysis of how cell morphology encodes cellular health and pathological conditions.
- Published
- 2023
- Full Text
- View/download PDF
36. Influence of Asymmetrical Bending Pipe with Different Gating Systems on Low-Pressure Metal Mold Casting
- Author
-
Ning Wang, Rong Li, ZiQi Zhang, and Qi. Zeng
- Subjects
casting simulation ,gating system ,asymmetric asymmetrical bending pipe ,low-pressure casting ,metal mold ,Technology (General) ,T1-995 - Abstract
To prepare a high-quality asymmetrical bending pipe of aluminum alloy by casting, the parting surfaces of the asymmetrical parts were determined based on the characteristics of the parts. Also, the forming process was designed and calculated. After that, the different types of gating systems were designed and the casting process was calculated by ProCAST, and then the influence of different casting gating systems on asymmetrical bending pipes was analyzed. The simulation results show that in the solidification process, although the filling speed of the single runner was slow, but the filling was stable. The gating system with a single runner-round flange filling system would lead to being more uniform for filling flow field and be sequential solidification of temperature field distribution, and stronger of the feeding ability. During the solidification process, the solid phase ratio of the single runner-round flange casting system is larger, and the shrinkage volume is smaller, which made the quality of castings better. Finally, a metal mold and core were made to cast a perfect asymmetric bending pipe of aluminum alloy product in a die casting machine. So the single runner-round flange filling system is suitable for asymmetrical bending pipe casting.
- Published
- 2023
- Full Text
- View/download PDF
37. Involvement of inflammasomes in tumor microenvironment and tumor therapies
- Author
-
Ziqi Zhang, Xue Li, Yang Wang, Yuquan Wei, and Xiawei Wei
- Subjects
Inflammasome ,NLRP3 ,Pyroptosis ,Tumor microenvironment ,Immunity ,Diseases of the blood and blood-forming organs ,RC633-647.5 ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Inflammasomes are macromolecular platforms formed in response to damage-associated molecular patterns (DAMPs) and pathogen-associated molecular patterns, whose formation would cause maturation of interleukin-1 (IL-1) family members and gasdermin D (GSDMD), leading to IL-1 secretion and pyroptosis respectively. Several kinds of inflammasomes detecting different types of dangers have been found. The activation of inflammasomes is regulated at both transcription and posttranscription levels, which is crucial in protecting the host from infections and sterile insults. Present findings have illustrated that inflammasomes are involved in not only infection but also the pathology of tumors implying an important link between inflammation and tumor development. Generally, inflammasomes participate in tumorigenesis, cell death, metastasis, immune evasion, chemotherapy, target therapy, and radiotherapy. Inflammasome components are upregulated in some tumors, and inflammasomes can be activated in cancer cells and other stromal cells by DAMPs, chemotherapy agents, and radiation. In some cases, inflammasomes inhibit tumor progression by initiating GSDMD-mediated pyroptosis in cancer cells and stimulating IL-1 signal-mediated anti-tumor immunity. However, IL-1 signal recruits immunosuppressive cell subsets in other cases. We discuss the conflicting results and propose some possible explanations. Additionally, we also summarize interventions targeting inflammasome pathways in both preclinical and clinical stages. Interventions targeting inflammasomes are promising for immunotherapy and combination therapy.
- Published
- 2023
- Full Text
- View/download PDF
38. MOF-Enhanced Aluminosilicate Ceramic Membranes Using Non-Firing Processes for Pesticide Filtration and Phytochrome Removal
- Author
-
Liping Zhao, Jinyun Xu, Ming Li, Yanyan Ji, Yu Sun, Ziqi Zhang, Xudong Hu, Zhe Peng, Yicong Wang, Chunming Zheng, and Xiaohong Sun
- Subjects
non-firing ceramics ,Fe-MOF ,adsorption ,chlorophyll ,Chemistry ,QD1-999 - Abstract
Aluminosilicates, abundant and crucial in both natural environments and industry, often involve uncontrollable chemical components when derived from minerals, making further chemical purification and reaction more complicated. This study utilizes pure alumina and fumed silica powders as more controllable sources, enhancing aluminosilicate reactivity through room temperature (non-firing) processing and providing a robust framework that resists mechanical stress and high temperature. By embedding iron-based metal–organic frameworks (Fe-MOF/non-firing aluminosilicate membranes) within the above matrix, these ceramic membranes not only preserve their mechanical robustness but also gain significant chemical functionality, enhancing their capacity to removing phytochromes from the vegetables. Sodium hydroxide and sodium silicate were selected as activators to successfully prepare high-strength, non-firing aluminosilicate membranes. These membranes demonstrated a flexural strength of 8.7 MPa under wet-culture conditions with a molar ratio of Al2O3:SiO2:NaOH:Na2SiO3 at 1:1:0.49:0.16. The chlorophyll adsorption of spinach conducted on these membranes showed a removal rate exceeding 90% at room temperature and pH = 9, highlighting its potential for the selective adsorption of chlorophyll. This study underscores the potential of MOF-enhanced aluminosilicate ceramic membranes in environmental applications, particularly for agricultural pollution control.
- Published
- 2024
- Full Text
- View/download PDF
39. High-Precision Position Detection and Communication Fusion Technology Using Beacon Spread-Spectrum Modulation with Four-Quadrant Detector
- Author
-
Shuai Chen, Xiaonan Yu, Jingmei Ye, Peng Lin, Ziqi Zhang, Tong Wang, and Li Xu
- Subjects
space laser communication ,four-quadrant detector ,position-detection precision ,detection and communication multiplexing ,spread-spectrum gain ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
In space laser communication, the wide divergence angle of beacon light leads to substantial spatial losses, compounded by background light and detector noise; this results in compromised precision in the detection of the beacon light position. To solve this problem, a high-precision detection technique and communication composite technology employing a four-quadrant detector (QD) with beacon spread-spectrum modulation are proposed. Pseudo-random sequences (PRNs) are employed to spread the beacon communication spectrum, with the spread-spectrum signal utilized to modulate the intensity of the transmitted beacon light at the transmitter end. At the receiver, QD photocurrent signals are cross-correlated with an identical PRN that is used for modulation. The strong auto-correlation properties of PRNs, which are uncorrelated with noise, enhance the output signal-to-noise ratio (SNR), enabling precise position detection and beacon communication under high-SNR conditions. Theoretical analysis is used to explore the effects of spreading gain on the sensitivity of system detection and the precision of position detection. The experimental results demonstrate that the beacon spread-spectrum modulation scheme effectively detects the position of the light spot. At a received optical power of −37 dBm and spreading sequence PRN depths of 1023, 127, and 31, the root-mean-square error (RMSE) values are 0.983 μm, 2.876 μm, and 7.275 μm, respectively. This corresponds to improvements of 14.96 dB, 10.29, dB, and 6.26 dB compared to direct detection precision (30.811 μm). Additionally, under an identical signal bandwidth, the sensitivity improves by 14.6 dB, 10.1 dB, and 6.4 dB, respectively. The proposed beacon spread-spectrum scheme mitigates the limitations of hardware reception sensitivity and position-detection precision, demonstrating its potential application in high-precision detection in long-distance interstellar laser communication.
- Published
- 2024
- Full Text
- View/download PDF
40. Corrigendum: GLP-1RAs caused gastrointestinal adverse reactions of drug withdrawal: a system review and network meta-analysis
- Author
-
Ziqi Zhang, Qiling Zhang, Ying Tan, Yu Chen, Xiqiao Zhou, Su Liu, and Jiangyi Yu
- Subjects
glucagon-like peptide-1 receptor agonist ,intolerance ,gastrointestinal adverse effects ,network meta-analysis ,Dulaglutide ,Liraglutide ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Published
- 2023
- Full Text
- View/download PDF
41. DPSR-based study and assessment of the influence pathways of Shanghai urban development level on river methane emission potential during 2011–2020
- Author
-
Ziqi Zhang, Zhinan Xu, Leyi Li, and Xiangrong Wang
- Subjects
Net zero carbon city ,Urban river methane emission potential ,Urban development level ,Driver-Pressure-State-Response model ,Partial least squares-path modeling ,Urban river methane emission potential index ,Ecology ,QH540-549.5 - Abstract
Numerous studies have shown that urban rivers are becoming a source of methane emissions, which poses a challenge to developing a “net zero carbon city.” Most studies at this stage focus on the influence of single urban elements on river methane emissions, such as land use, water facilities, etc. It is necessary to consider the impact of urban development on river methane emissions in an integrated manner. This study aggregated relevant data sets for seven municipal districts in Shanghai during 2011–2020, collected through literature and statistical yearbooks. We constructed an “urban river methane emission” system based on the Driver-Pressure-State-Response model and used partial least squares-path modeling to verify the rationality of the system’s influence pathways. The results showed (goodness-of-fitness = 0.4446) that driver (population density, urbanization rate), pressure (annual water supply, total yearly household waste), and state (deteriorating water quality environment) all increased the methane emission potential of urban rivers (total effect = 0.1917; 0.3932; 0.1394). Response (sewage treatment rate, environmental investment) would mitigate river methane emissions (total effect = -0.2230). An “urban river methane emission potential” assessment model was then developed. Partial least squares-path modeling and generalized linear mixed model were used to calculate the “urban river methane emission potential” index in seven municipal districts of Shanghai over ten years, respectively. And the results of the two methods were similar. The results showed that (e.g., partial least squares-path modeling method) Pudong District and Putuo District maintained a high methane emission potential of urban rivers (the average index was 46.15%, and 25.94%, respectively) during this decade. The emission potential of Qingpu District and Jinshan District were significantly lower during this decade (p
- Published
- 2023
- Full Text
- View/download PDF
42. Situation Awareness and Sensitivity Analysis for Absorption of Grid-Connected Renewable Energy Power Generation Integrating Robust Optimization and Radial Basis Function Neural Network
- Author
-
Ziqi Zhang, Zhong Chen, Qi Zhao, Yi Wang, and Jiang Tian
- Subjects
Renewable energy ,radial basis function neural network ,robust optimization ,sensitivity analysis ,situation awareness ,Production of electric energy or power. Powerplants. Central stations ,TK1001-1841 ,Renewable energy sources ,TJ807-830 - Abstract
The significance of situation awareness (SA) in power systems has increased to enhance the utilization of grid-connected renewable energy power generation (REPG). This paper proposes a real-time calculation architecture based on the integration of robust optimization (RO) and artificial intelligence. First, the time-series simulation of the REPG consumption capacity is carried out under the current grid operating conditions. RO is employed in this simulation, given the randomness of the REPG output and the grid load. Then, the radial basis function neural network (RBFNN) is trained with the results under different parameters using the artificial fish swarm algorithm (AFSA), enabling the neural network (NN) to be the replacement for the time-series simulation model. The trained NN can quickly perceive the REPG absorption situation within the predefined grid structure and period. Moreover, the Sobol' method is adopted to conduct the global sensitivity analysis for different parameters based on the input-output samples obtained by the trained NN. Finally, the simulation experiments based on the modified IEEE 14-bus system prove the real-time performance and accuracy of the proposed SA architecture.
- Published
- 2023
- Full Text
- View/download PDF
43. scMoMaT jointly performs single cell mosaic integration and multi-modal bio-marker detection
- Author
-
Ziqi Zhang, Haoran Sun, Ragunathan Mariappan, Xi Chen, Xinyu Chen, Mika S. Jain, Mirjana Efremova, Sarah A. Teichmann, Vaibhav Rajan, and Xiuwei Zhang
- Subjects
Science - Abstract
Many methods for single cell data integration have been developed, though mosaic integration remains challenging. Here the authors present scMoMaT, a mosaic integration method for single cell multi-modality data from multiple batches, that jointly learns cell representations and marker features across modalities for different cell clusters, to interpret the cell clusters from different modalities.
- Published
- 2023
- Full Text
- View/download PDF
44. Antioxidant capacity, flavor and physicochemical properties of FH06 functional beverage fermented by lactic acid bacteria: a promising method to improve antioxidant activity and flavor of plant functional beverage
- Author
-
Xian-Tao Yan, Ziqi Zhang, Yubao Wang, Wenmiao Zhang, Longfei Zhang, Yang Liu, Dawei Chen, Wenqiong Wang, Wenlong Ma, Jian-Ya Qian, and Ruixia Gu
- Subjects
Antioxidant ,Plants ,Lactic acid bacteria (LAB) ,Functional food ,Flavor ,Agriculture (General) ,S1-972 ,Chemistry ,QD1-999 - Abstract
Abstract The ability of natural plants to treat chronic diseases is closely related to their antioxidant function. Lactic acid bacteria (LAB) fermentation is an effective way to improve the nutritional value, biological activity and flavor of food. This study investigated the pH, titratable acidity, total polysaccharide, total flavone, total saponin, total polyphenol, and antioxidant activity of the FH06 beverage before and after probiotic fermentation. Results: After fermentation, FH06 had lower contents of total polysaccharides, total flavonoids, total saponins and total polyphenols but higher titratable acidity. The antioxidant activity was tested by total antioxidant capacity (FRAP method) and DPPH· scavenging ability. The FRAP value significantly increased after fermentation (P
- Published
- 2023
- Full Text
- View/download PDF
45. Tumor cell-derived conditioned medium induced pro-tumoral phenotypes in macrophages through calcium-nuclear factor κB interaction
- Author
-
Yuexin Zhang, Ziqi Zhang, Lei Chen, and Xiuyue Zhang
- Subjects
LL-2 ,CMT-64 macrophages ,NF-κB ,Calcium ,RNA-seq ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background The malignant behaviors of lung cancers are affected by not only cancer cells but also many kinds of stromal cells in tumor microenvironment (TME), including macrophages. Macrophages have been proven to extensively influence tumor progression through several mechanisms, among which switching of macrophages from pro-inflammatory phenotypes (M1-like) to anti-inflammatory phenotypes (M2-like) mediated by transcription factors such as nuclear factor κB (NF-κB) is the most crucial event. The regulation of NF-κB has been well studied, however some details remain fuzzy. Methods Mouse primary bone marrow-derived macrophages (BMDMs) were cultured in Lewis lung carcinoma cell line LL-2-derived conditioned medium (LL-2-CM). Proliferation, migration, and polarization of BMDMs were tested by CCK8, scratch test, transwell, and flow cytometry. Secretion of several cytokines were detected by ELISA or cytometric bead array. To further explore the underlying mechanisms, BMDMs cultured in LL-2-CM were harvested for RNA-seq. Cytosolic calcium was detected by calcium probe Fluo-4-AM. Western blot was applied to exam the activation of NF-κB signal. BAPTA-AM was applied to sequestrate cytosolic calcium to further investigate the relationship between calcium and NF-κB signal. The polarization, calcium alteration, and NF-κB signal activation were further validated in BMDMs treated by CMT-64-derived conditioned medium (CMT-64-CM). Results LL-2-CM promoted proliferation, migration, and M2-like polarization of BMDMs and inhibited M1-like polarization of BMDMs. However two pro-inflammatory cytokines, interleukin-6 (IL-6) and tumor necrosis factor- $$\mathrm{\alpha }$$ α (TNF- $$\mathrm{\alpha }$$ α ) were secreted. RNA-seq indicated that LL-2-CM activated both canonical and non-canonical NF-κB signal in BMDMs. Western blot showed that canonical NF-κB was temporarily elicited and attenuated at 24 h, while non-canonical NF-κB was consistently activated. At the same time, expression of genes that regulate cytosolic calcium ion concentration were down regulated, which caused diminution of cytosolic calcium in BMDMs treated with LL-2-CM. The decreased cytosolic calcium, M2-like polarization, and NF-κB activation was also observed in CMT-64-CM treated BMDMs. On the contrary, elevated cytosolic calcium was observed during M1-like polarization of BMDMs elicited by lipopolysaccharide (LPS). Interestingly, administration of calcium chelator, BAPTA-AM, impeded activation of canonical NF-κB and expression of M1-like marker induced by LPS, which further confirmed the relationship between cytosolic calcium and canonical NF-κB signal. Conclusions In summary, lung cancer cell-derived conditioned medium promoted migration, proliferation, and M2-like polarization of BMDMs. The suppressed M1-like polarization was achieved through mitigating canonical NF-κB pathway via diminishing cytosolic calcium concentration. As far as we know, our work firstly revealed that cytosolic calcium is the key during inhibition of canonical NF-κB and M1-like polarization in macrophages by tumor cells.
- Published
- 2022
- Full Text
- View/download PDF
46. A Multifaceted benchmarking of synthetic electronic health record generation models
- Author
-
Chao Yan, Yao Yan, Zhiyu Wan, Ziqi Zhang, Larsson Omberg, Justin Guinney, Sean D. Mooney, and Bradley A. Malin
- Subjects
Science - Abstract
Synthetic health data have the potential to mitigate privacy concerns when sharing data to support biomedical research and the development of innovative healthcare applications. In this work, the authors introduce a use case oriented benchmarking framework to evaluate data synthesis models through a set of utility and privacy metrics.
- Published
- 2022
- Full Text
- View/download PDF
47. Pesticide risk constraints to achieving Sustainable Development Goals in China based on national modeling
- Author
-
Ziqi Zhang, Xiaoman Yan, Kevin C. Jones, Cong Jiao, Cheng Sun, Yong Liu, Ying Zhu, Qianqian Zhang, Limei Zhai, Zhenyao Shen, and Lei Chen
- Subjects
Water supply for domestic and industrial purposes ,TD201-500 - Abstract
Abstract Pesticides applied worldwide to meet food demand is recognized as a key threat to the Sustainable Development Goals (SDGs) set by the United Nations. Studies on pesticide risks employ different ingredients, methods or specific environments, which makes it difficult to quantify the scale of the problem. Furthermore, the complex influences and hotspots of long-term pesticide usage remain unclear. Herein, we present a national-scale study of four typical pesticides in China, the world’s largest pesticide user. The spatiotemporal changes in legacy and risk of pesticides over 30 years were analyzed using a modified fugacity model approach coupled with comprehensive ingredient database. Pesticide risk in mainland China might last until 2075 due to the previous legacy, although the usage has declined since 2014. The use of target pesticides was estimated as 2.38 × 105 tonnes in 2017, and about 6.59 × 103 tonnes discharged into the ocean from major basins. Risk areas expanded from 47% in 1991 to 79% in 2017, with 30% at high risk. Of the risk areas, 31% were highly populated while 3% had high biodiversity. 7% of mainland China suffered from both limited water resource and high pesticide risk. It is shown that the improper substitution with lower toxicity pesticides would make the proportion of high-risk regions unexpectedly increased from 18% to 44% due to the longer half-lives of the alternatives. Pesticides pose risks to environmental and human health, and the tailored assessment tool will be vital in contributing towards future pesticide management and meeting sustainability targets in China.
- Published
- 2022
- Full Text
- View/download PDF
48. Toward dendrite-free and anti-corrosion Zn anodes by regulating a bismuth-based energizer
- Author
-
Mingming Wang, Yahan Meng, Ke Li, Touqeer Ahmad, Na Chen, Yan Xu, Jifei Sun, Mingyan Chuai, Xinhua Zheng, Yuan Yuan, Chunyue Shen, Ziqi Zhang, and Wei Chen
- Subjects
Aqueous Zn anode ,Anti-corrosion ,Replacement reaction ,Dendrite-free ,Bismuth-based energizer ,Mechanical engineering and machinery ,TJ1-1570 ,Electronics ,TK7800-8360 - Abstract
Aqueous rechargeable zinc metal batteries display high theoretical capacity along with economical effectiveness, environmental benignity and high safety. However, dendritic growth and chemical corrosion at the Zn anodes limit their widespread applications. Here, we construct a Zn/Bi electrode via in-situ growth of a Bi-based energizer upon Zn metal surface using a replacement reaction. Experimental and theoretical calculations reveal that the Bi-based energizer composed of metallic Bi and ZnBi alloy contributes to Zn plating/stripping due to strong adsorption energy and fast ion transport rates. The resultant Zn/Bi electrode not only circumvents Zn dendrite growth but also improves Zn anode anti-corrosion performance. Specifically, the corrosion current of the Zn/Bi electrode is reduced by 90% compared to bare Zn. Impressively, an ultra-low overpotential of 12 mV and stable cycling for 4000 h are achieved in a Zn/Bi symmetric cell. A Zn–Cu/Bi asymmetric cell displays a cycle life of 1000 cycles, with an average Coulombic efficiency as high as 99.6%. In addition, an assembled Zn/Bi-activated carbon hybrid capacitor exhibits a stable life of more than 50,000 cycles, an energy density of 64 Wh kg−1, and a power density of 7 kW kg−1. The capacity retention rate of a Zn/Bi–MnO2 full cell is improved by over 150% compared to a Zn–MnO2 cell without the Bi-based energizer. Our findings open a new arena for the industrialization of Zn metal batteries for large-scale energy storage applications.
- Published
- 2022
- Full Text
- View/download PDF
49. Glucokinase regulatory protein: a balancing act between glucose and lipid metabolism in NAFLD
- Author
-
Ziqi Zhang, Guang Ji, and Meng Li
- Subjects
glucokinase regulator ,glucokinase regulatory protein ,glucokinase ,non-alcoholic fatty liver disease ,and type 2 diabetes ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
Non-alcoholic fatty liver disease (NAFLD) is a common liver disease worldwide, affected by both genetics and environment. Type 2 diabetes (T2D) stands as an independent environmental risk factor that precipitates the onset of hepatic steatosis and accelerates its progression to severe stages of liver damage. Furthermore, the coexistence of T2D and NAFLD magnifies the risk of cardiovascular disease synergistically. However, the association between genetic susceptibility and metabolic risk factors in NAFLD remains incompletely understood. The glucokinase regulator gene (GCKR), responsible for encoding the glucokinase regulatory protein (GKRP), acts as a regulator and protector of the glucose-metabolizing enzyme glucokinase (GK) in the liver. Two common variants (rs1260326 and rs780094) within the GCKR gene have been associated with a lower risk for T2D but a higher risk for NAFLD. Recent studies underscore that T2D presence significantly amplifies the effect of the GCKR gene, thereby increasing the risk of NASH and fibrosis in NAFLD patients. In this review, we focus on the critical roles of GKRP in T2D and NAFLD, drawing upon insights from genetic and biological studies. Notably, prior attempts at drug development targeting GK with glucokinase activators (GKAs) have shown potential risks of augmented plasma triglycerides or NAFLD. Conversely, overexpression of GKRP in diabetic rats improved glucose tolerance without causing NAFLD, suggesting the crucial regulatory role of GKRP in maintaining hepatic glucose and lipid metabolism balance. Collectively, this review sheds new light on the complex interaction between genes and environment in NAFLD, focusing on the GCKR gene. By integrating evidence from genetics, biology, and drug development, we reassess the therapeutic potential of targeting GK or GKRP for metabolic disease treatment. Emerging evidence suggests that selectively activating GK or enhancing GK-GKRP binding may represent a holistic strategy for restoring glucose and lipid metabolic balance.
- Published
- 2023
- Full Text
- View/download PDF
50. Corrigendum: The value of functional magnetic resonance imaging in the evaluation of diabetic kidney disease: a systematic review and meta-analysis
- Author
-
Ziqi Zhang, Yu Chen, Xiqiao Zhou, Su Liu, and Jiangyi Yu
- Subjects
functional magnetic resonance imaging ,diabetic kidney disease ,meta-analysis ,fMRI ,DKD ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Published
- 2023
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.