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Yu T, Yang Q, Peng B, Gu Z, Zhu D. Vascularized organoid-on-a-chip: design, imaging, and analysis. Angiogenesis 2024; 27:147-172. [PMID: 38409567 DOI: 10.1007/s10456-024-09905-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 01/11/2024] [Indexed: 02/28/2024]
Abstract
Vascularized organoid-on-a-chip (VOoC) models achieve substance exchange in deep layers of organoids and provide a more physiologically relevant system in vitro. Common designs for VOoC primarily involve two categories: self-assembly of endothelial cells (ECs) to form microvessels and pre-patterned vessel lumens, both of which include the hydrogel region for EC growth and allow for controlled fluid perfusion on the chip. Characterizing the vasculature of VOoC often relies on high-resolution microscopic imaging. However, the high scattering of turbid tissues can limit optical imaging depth. To overcome this limitation, tissue optical clearing (TOC) techniques have emerged, allowing for 3D visualization of VOoC in conjunction with optical imaging techniques. The acquisition of large-scale imaging data, coupled with high-resolution imaging in whole-mount preparations, necessitates the development of highly efficient analysis methods. In this review, we provide an overview of the chip designs and culturing strategies employed for VOoC, as well as the applicable optical imaging and TOC methods. Furthermore, we summarize the vascular analysis techniques employed in VOoC, including deep learning. Finally, we discuss the existing challenges in VOoC and vascular analysis methods and provide an outlook for future development.
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Affiliation(s)
- Tingting Yu
- Britton Chance Center for Biomedical Photonics - MoE Key Laboratory for Biomedical Photonics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
- Wuhan National Laboratory for Optoelectronics - Advanced Biomedical Imaging Facility, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Qihang Yang
- Britton Chance Center for Biomedical Photonics - MoE Key Laboratory for Biomedical Photonics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
- Wuhan National Laboratory for Optoelectronics - Advanced Biomedical Imaging Facility, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China
| | - Bo Peng
- Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, Xi'an, Shanxi, 710072, China
| | - Zhongze Gu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, 210096, China
- Institute of Biomaterials and Medical Devices, Southeast University, Suzhou, Jiangsu, 215163, China
| | - Dan Zhu
- Britton Chance Center for Biomedical Photonics - MoE Key Laboratory for Biomedical Photonics, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China.
- Wuhan National Laboratory for Optoelectronics - Advanced Biomedical Imaging Facility, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China.
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2
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Yan S, Lu J, Li Y, Zhu H, Tian T, Qin Y, Zhu W. Large-scale functional network connectivity mediates the association between nigral neuromelanin hypopigmentation and motor impairment in Parkinson's disease. Brain Struct Funct 2024; 229:843-852. [PMID: 38347222 DOI: 10.1007/s00429-024-02761-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 01/09/2024] [Indexed: 04/10/2024]
Abstract
Neuromelanin hypopigmentation within substantia nigra pars compacta (SNc) reflects the loss of pigmented neurons, which in turn contributes to the dysfunction of the nigrostriatal and striato-cortical pathways in Parkinson's disease (PD). Our study aims to investigate the relationships between SN degeneration manifested by neuromelanin reduction, functional connectivity (FC) among large-scale brain networks, and motor impairment in PD. This study included 68 idiopathic PD patients and 32 age-, sex- and education level-matched healthy controls who underwent neuromelanin-sensitive magnetic resonance imaging (MRI), functional MRI, and motor assessments. SN integrity was measured using the subregional contrast-to-noise ratio calculated from neuromelanin-sensitive MRI. Resting-state FC maps were obtained based on the independent component analysis. Subsequently, we performed partial correlation and mediation analyses in SN degeneration, network disruption, and motor impairment for PD patients. We found significantly decreased neuromelanin within SN and widely altered inter-network FCs, mainly involved in the basal ganglia (BG), sensorimotor and frontoparietal networks in PD. In addition, decreased neuromelanin content was negatively correlated with the dorsal sensorimotor network (dSMN)-medial visual network connection (P = 0.012) and dSMN-BG connection (P = 0.004). Importantly, the effect of SN neuromelanin hypopigmentation on motor symptom severity in PD is partially mediated by the increased connectivity strength between BG and dSMN (indirect effect = - 1.358, 95% CI: - 2.997, - 0.147). Our results advanced our understanding of the interactions between neuromelanin hypopigmentation in SN and altered FCs of functional networks in PD and suggested the potential of multimodal metrics for early diagnosis and monitoring the response to therapies.
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Affiliation(s)
- Su Yan
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095, JiefangAvenue, Wuhan, 430030, China
| | - Jun Lu
- Department of CT & MRI, The First Affiliated Hospital, College of Medicine, Shihezi University, 107 North Second Road, Shihezi, China
| | - Yuanhao Li
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095, JiefangAvenue, Wuhan, 430030, China
| | - Hongquan Zhu
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095, JiefangAvenue, Wuhan, 430030, China
| | - Tian Tian
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095, JiefangAvenue, Wuhan, 430030, China
| | - Yuanyuan Qin
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095, JiefangAvenue, Wuhan, 430030, China
| | - Wenzhen Zhu
- Department of Radiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, No. 1095, JiefangAvenue, Wuhan, 430030, China.
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Zhao W, Zhou Y, Hu Y, Luo W, Wang J, Zhu H, Xu Z. Predictors of mortality and poor outcome for patients with severe infectious encephalitis in the intensive care unit: a cross-sectional study. BMC Infect Dis 2024; 24:421. [PMID: 38644471 PMCID: PMC11034050 DOI: 10.1186/s12879-024-09312-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 04/10/2024] [Indexed: 04/23/2024] Open
Abstract
BACKGROUND There are few thorough studies assessing predictors of severe encephalitis, despite the poor prognosis and high mortality associated with severe encephalitis. The study aims to evaluate the clinical predictors of mortality and poor outcomes at hospital discharge in patients with severe infectious encephalitis in intensive care units. METHOD In two Chinese hospitals, a retrospective cohort study comprising 209 patients in intensive care units suffering from severe infectious encephalitis was carried out. Univariate and multivariate logistic regression analyses were used to identify the factors predicting mortality in all patients and poor outcomes in all survivors with severe infectious encephalitis. RESULTS In our cohort of 209 patients with severe encephalitis, 22 patients died, yielding a mortality rate of 10.5%. Cerebrospinal fluid pressure ≥ 400mmH2O (OR = 7.43), abnormal imaging (OR = 3.51), abnormal electroencephalogram (OR = 7.14), and number of rescues (OR = 1.12) were significantly associated with an increased risk of mortality in severe infectious encephalitis patients. Among the 187 survivors, 122 (65.2%) had favorable outcomes, defined as the modified Rankine Scale (mRS) score (0 ~ 3), and 65(34.8%) had poor outcomes (mRS scores 4 ~ 5). Age (OR = 1.02), number of rescues (OR = 1.43), and tubercular infection (OR = 10.77) were independent factors associated with poor outcomes at discharge in all survivors with severe infectious encephalitis. CONCLUSIONS Multiple clinical, radiologic, and electrophysiological variables are independent predictive indicators for mortality and poor outcomes in patients with severe encephalitis in intensive care units. Identifying these outcome predictors early in patients with severe encephalitis may enable the implementation of appropriate medical treatment and help reduce mortality rates.
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Affiliation(s)
- WenYan Zhao
- Department of Neuropsychology, Zhongnan Hospital of Wuhan University, Wuhan, People's Republic of China
| | - YuLiang Zhou
- Department of Neuropsychology, Zhongnan Hospital of Wuhan University, Wuhan, People's Republic of China
| | - YingYing Hu
- Department of Neuropsychology, Zhongnan Hospital of Wuhan University, Wuhan, People's Republic of China
| | - WenJing Luo
- Department of Neurology, General Hospital of Central Theater Command, Wuhan, People's Republic of China
| | - Jing Wang
- Department of Neuropsychology, Zhongnan Hospital of Wuhan University, Wuhan, People's Republic of China.
| | - Hong Zhu
- Department of Neuropsychology, Zhongnan Hospital of Wuhan University, Wuhan, People's Republic of China
| | - ZhiPeng Xu
- Department of Neuropsychology, Zhongnan Hospital of Wuhan University, Wuhan, People's Republic of China.
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Liu B, Guan S, Wang F, Zhang X, Yu T, Wei R. Research on the Effect of Vibrational Micro-Displacement of an Astronomical Camera on Detector Imaging. Sensors (Basel) 2024; 24:1025. [PMID: 38339742 PMCID: PMC10857430 DOI: 10.3390/s24031025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 02/12/2024]
Abstract
Scientific-grade cameras are frequently employed in industries such as spectral imaging technology, aircraft, medical detection, and astronomy, and are characterized by high precision, high quality, fast speed, and high sensitivity. Especially in the field of astronomy, obtaining information about faint light often requires long exposure with high-resolution cameras, which means that any external factors can cause the camera to become unstable and result in increased errors in the detection results. This paper aims to investigate the effect of displacement introduced by various vibration factors on the imaging of an astronomical camera during long exposure. The sources of vibration are divided into external vibration and internal vibration. External vibration mainly includes environmental vibration and resonance effects, while internal vibration mainly refers to the vibration caused by the force generated by the refrigeration module inside the camera during the working process of the camera. The cooling module is divided into water-cooled and air-cooled modes. Through the displacement and vibration experiments conducted on the camera, it is proven that the air-cooled mode will cause the camera to produce greater displacement changes relative to the water-cooled mode, leading to blurring of the imaging results and lowering the accuracy of astronomical detection. This paper compares the effects of displacement produced by two methods, fan cooling and water-circulation cooling, and proposes improvements to minimize the displacement variations in the camera and improve the imaging quality. This study provides a reference basis for the design of astronomical detection instruments and for determining the vibration source of cameras, which helps to promote the further development of astronomical detection.
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Affiliation(s)
- Bin Liu
- Xi’an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Xi’an 710119, China; (B.L.); (S.G.); (F.W.); (T.Y.)
| | - Shouxin Guan
- Xi’an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Xi’an 710119, China; (B.L.); (S.G.); (F.W.); (T.Y.)
| | - Feicheng Wang
- Xi’an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Xi’an 710119, China; (B.L.); (S.G.); (F.W.); (T.Y.)
| | - Xiaoming Zhang
- National Astronomical Observatories, Chinses Academy of Sciences, Beijing 100012, China;
| | - Tao Yu
- Xi’an Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Xi’an 710119, China; (B.L.); (S.G.); (F.W.); (T.Y.)
| | - Ruyi Wei
- School of Electronic Information, Wuhan University, Wuhan 430072, China
- Hubei Luojia Laboratory, Wuhan 430079, China
- Wuhan Institute of Quantum Technology, Wuhan 430023, China
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Chen J, Zeng M, Liang XF, Peng D, Xie R, Wu D. Dietary supplementation of VA enhances growth, feed utilization, glucose and lipid metabolism, appetite, and antioxidant capacity of Chinese perch (Siniperca chuatsi). Fish Physiol Biochem 2024; 50:225-237. [PMID: 37594622 DOI: 10.1007/s10695-023-01221-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 07/11/2023] [Indexed: 08/19/2023]
Abstract
The aim of this study was to investigate the effect of dietary vitamin A on juvenile Chinese perch (Siniperca chuatsi). Chinese perch were fed with five experimental diets containing 0, 20, 40, 60, and 80 mg VA·kg-1 for 8 weeks. Results showed that dietary vitamin A significantly influenced the fish's growth, feed utilization, glucose and lipid metabolism, appetite, and antioxidant capacity. Vitamin A-supplemented groups had higher weight gain rate (WGR) and specific growth rate (SGR) compared to the control group. Feed conversion ratio (FCR) was also lower in the vitamin A-supplemented groups. Dietary vitamin A had no significant effect on the survival rate (SR). Compared to the control group, fish fed with vitamin A had increased feed intake (FI), and the expression of appetite-promoting genes (npy and agrp) was significantly higher in the 40 mg VA·kg-1 group. Vitamin A also enhanced the utilization of dietary protein by Chinese perch. The serum glucose content of the fish fed with 40 mg VA·kg-1 diet was significantly higher than that of the control group and 20 mg VA·kg-1 diet, indicating that the promoting effect of VA on gluconeogenesis was greater than that on glycolysis. Additionally, dietary vitamin A increased the expression of lipid metabolism-related genes (hl and fas) and antioxidant genes (nrf2 and gpx) in the fish. These results suggest that the optimal vitamin A requirement of juvenile Chinese perch bream was estimated to be 37.32 mg VA·kg-1 based on broken-line regression analysis of WGR. In conclusion, this study provides valuable insights into the potential benefits of dietary vitamin A on the growth, metabolism, and antioxidant capacity of Chinese perch.
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Affiliation(s)
- Junliang Chen
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, Wuhan, 430070, China
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China
| | - Ming Zeng
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, Wuhan, 430070, China
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China
| | - Xu-Fang Liang
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, Wuhan, 430070, China.
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China.
| | - Di Peng
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, Wuhan, 430070, China
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China
| | - Ruipeng Xie
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, Wuhan, 430070, China
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China
| | - Dongliang Wu
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, Wuhan, 430070, China
- Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China
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Wang L, Wen H, Guo L, Liang A, Liu T, Zhao D, Dong L. The Effect of Nitrogen Functional Groups on Pb 0, PbO, and PbCl 2 Adsorption over a Carbonaceous Surface. Molecules 2024; 29:511. [PMID: 38276589 PMCID: PMC10820923 DOI: 10.3390/molecules29020511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 12/29/2023] [Accepted: 01/15/2024] [Indexed: 01/27/2024] Open
Abstract
Lead (Pb) pollution, especially from the incineration of municipal solid waste (MSW), poses a significant threat to the environment. Among all the effective methods, activated carbon (AC) injection serves as an effective approach for lead removal from flue gas, while the modification of ACs emerges as a crucial pathway for enhancing Pb adsorption capacities. Density functional theory (DFT) is employed in this study to investigate the mechanisms underlying the enhanced adsorption of Pb species (Pb0, PbO, and PbCl2) on nitrogen-functionalized carbonaceous surfaces. The results show that nitrogen-containing groups substantially enhance lead adsorption capacity, with adsorption energies ranging from -526.18 to -288.31 kJ/mol on nitrogen-decorated carbonaceous surfaces, much higher than those on unmodified surfaces (-310.35 to -260.96 kJ/mol). Additionally, electrostatic potential and density-of-states analyses evidence that pyridinic nitrogen atoms remarkably expand charge distribution and strengthen orbital hybridization, thereby augmenting lead capture. This research elucidates the role of nitrogen-containing functional groups in lead adsorption, offering valuable insights for the development of highly efficient biomass-derived activated carbon sorbents for lead removal.
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Affiliation(s)
- Liang Wang
- China Power Hua Chuang (Suzhou) Electricity Technology Research Company Co., Ltd., Suzhou 215125, China; (L.W.); (L.G.); (T.L.)
| | - Huaizhou Wen
- Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 740032, China;
| | - Lei Guo
- China Power Hua Chuang (Suzhou) Electricity Technology Research Company Co., Ltd., Suzhou 215125, China; (L.W.); (L.G.); (T.L.)
| | - Ancheng Liang
- Haikou China Power Environmental Protection Power Generation Co., Ltd., Haikou 570106, China; (A.L.); (D.Z.)
| | - Tingan Liu
- China Power Hua Chuang (Suzhou) Electricity Technology Research Company Co., Ltd., Suzhou 215125, China; (L.W.); (L.G.); (T.L.)
| | - Dongxu Zhao
- Haikou China Power Environmental Protection Power Generation Co., Ltd., Haikou 570106, China; (A.L.); (D.Z.)
| | - Lu Dong
- State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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7
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Xie NB, Wang M, Chen W, Ji TT, Guo X, Gang FY, Wang YF, Feng YQ, Liang Y, Ci W, Yuan BF. Whole-Genome Sequencing of 5-Hydroxymethylcytosine at Base Resolution by Bisulfite-Free Single-Step Deamination with Engineered Cytosine Deaminase. ACS Cent Sci 2023; 9:2315-2325. [PMID: 38161361 PMCID: PMC10755730 DOI: 10.1021/acscentsci.3c01131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/26/2023] [Accepted: 11/06/2023] [Indexed: 01/03/2024]
Abstract
The epigenetic modification 5-hydroxymethylcytosine (5hmC) plays a crucial role in the regulation of gene expression. Although some methods have been developed to detect 5hmC, direct genome-wide mapping of 5hmC at base resolution is still highly desirable. Herein, we proposed a single-step deamination sequencing (SSD-seq) method, designed to precisely map 5hmC across the genome at single-base resolution. SSD-seq takes advantage of a screened engineered human apolipoprotein B mRNA-editing catalytic polypeptide-like 3A (A3A) protein, known as eA3A-v10, to selectively deaminate cytosine (C) and 5-methylcytosine (5mC) but not 5hmC. During sequencing, the deaminated C and 5mC are converted to uracil (U) and thymine (T), read as T in the sequencing data. However, 5hmC remains unaffected by eA3A-v10 and is read as C during sequencing. Consequently, the presence of C in the sequence reads indicates the original 5hmC. We applied SSD-seq to generate a base-resolution map of 5hmC in human lung tissue. Our findings revealed that 5hmC was predominantly localized to CpG dinucleotides. Furthermore, the base-resolution map of 5hmC generated by SSD-seq demonstrated a strong correlation with prior ACE-seq results. The advantages of SSD-seq are its single-step process, absence of bisulfite treatment or DNA glycosylation, cost effectiveness, and ability to detect and quantify 5hmC directly at single-base resolution.
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Affiliation(s)
- Neng-Bin Xie
- Department
of Occupational and Environmental Health, School of Public Health, Wuhan University, Wuhan 430071, China
- Research
Center of Public Health, Renmin Hospital
of Wuhan University, Wuhan University, Wuhan 430060, China
| | - Min Wang
- College
of Chemistry and Molecular Sciences, Wuhan
University, Wuhan 430072, China
| | - Wei Chen
- Department
of Laboratory Medicine, Zhongnan Hospital
of Wuhan University, Wuhan University, Wuhan 430071, China
| | - Tong-Tong Ji
- College
of Chemistry and Molecular Sciences, Wuhan
University, Wuhan 430072, China
| | - Xia Guo
- College
of Chemistry and Molecular Sciences, Wuhan
University, Wuhan 430072, China
| | - Fang-Yin Gang
- Department
of Occupational and Environmental Health, School of Public Health, Wuhan University, Wuhan 430071, China
| | - Ya-Feng Wang
- Department
of Occupational and Environmental Health, School of Public Health, Wuhan University, Wuhan 430071, China
| | - Yu-Qi Feng
- Department
of Occupational and Environmental Health, School of Public Health, Wuhan University, Wuhan 430071, China
| | - Yuan Liang
- Key
Laboratory of Genomics and Precision Medicine, and China National
Center for Bioinformation, Beijing Institute
of Genomics, Chinese Academy of Sciences, Beijing 100101, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Weimin Ci
- Key
Laboratory of Genomics and Precision Medicine, and China National
Center for Bioinformation, Beijing Institute
of Genomics, Chinese Academy of Sciences, Beijing 100101, China
- University
of Chinese Academy of Sciences, Beijing 100049, China
| | - Bi-Feng Yuan
- Department
of Occupational and Environmental Health, School of Public Health, Wuhan University, Wuhan 430071, China
- Research
Center of Public Health, Renmin Hospital
of Wuhan University, Wuhan University, Wuhan 430060, China
- College
of Chemistry and Molecular Sciences, Wuhan
University, Wuhan 430072, China
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8
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Ye H, Liu Q, Xu X, Song M, Lu Y, Yang L, Wang W, Wang Y, Li M, Wang D. Construction Strategy for Flexible and Breathable SiO 2/Al/NFs/PET Composite Fabrics with Dual Shielding against Microwave and Infrared-Thermal Radiations for Wearable Protective Clothing. Polymers (Basel) 2023; 16:6. [PMID: 38201671 PMCID: PMC10781071 DOI: 10.3390/polym16010006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/04/2023] [Accepted: 12/08/2023] [Indexed: 01/12/2024] Open
Abstract
Microwave and infrared-thermal radiation-compatible shielding fabrics represent an important direction in the development of wearable protective fabrics. Nevertheless, effectively and conveniently integrating compatible shielding functions into fabrics while maintaining breathability and moisture permeability remains a significant challenge. Here, we take hydrophilic PVA-co-PE nanofibrous film-coated PET fabric (NFs/PET) as a flexible substrate and deposit a dielectric/conductive (SiO2/Al) bilayer film via magnetron sputtering. This strategy endows the fabric surface with high electrical conductivity, nanoscale roughness comparable to visible and infrared waves, and a dielectric-metal contact interface possessing localized plasmon resonance and Mie scattering effects. The results demonstrate that the optimized SiO2/Al/NFs/PET composite conductive fabric (referred to as S4-1) possesses favorable X-band electromagnetic interference (EMI) shielding effectiveness (50 dB) as well as excellent long-wave infrared (LWIR) shielding or IR stealth performance (IR emissivity of 0.60). Notably, the S4-1 fabric has a cooling effect of about 12.4 °C for a heat source (80 °C) and an insulating effect of about 17.2 °C for a cold source (-20 °C), showing excellent shielding capability for heat conduction and heat radiations. Moreover, the moisture permeability of the S4-1 fabric is about 300 g/(m2·h), which is better than the requirement concerning moisture permeability for wearable fabrics (≥2500-5000 g/(m2·24 h)), indicating excellent heat and moisture comfort. In short, our fabrics have lightweight, thin, moisture-permeable and excellent shielding performance, which provides novel ideas for the development of wearable multi-band shielding fabrics applied to complex electromagnetic environments.
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Affiliation(s)
- Hui Ye
- Key Laboratory of Textile Fiber and Products, Ministry of Education, Wuhan Textile University, Wuhan 430200, China; (H.Y.); (X.X.); (M.S.); (Y.L.); (L.Y.); (W.W.); (Y.W.); (M.L.)
- Hubei International Science and Technology Cooperation Base for Intelligent Textile Material Innovation & Application, Wuhan Textile University, Wuhan 430200, China
| | - Qiongzhen Liu
- Key Laboratory of Textile Fiber and Products, Ministry of Education, Wuhan Textile University, Wuhan 430200, China; (H.Y.); (X.X.); (M.S.); (Y.L.); (L.Y.); (W.W.); (Y.W.); (M.L.)
- Hubei International Science and Technology Cooperation Base for Intelligent Textile Material Innovation & Application, Wuhan Textile University, Wuhan 430200, China
| | - Xiao Xu
- Key Laboratory of Textile Fiber and Products, Ministry of Education, Wuhan Textile University, Wuhan 430200, China; (H.Y.); (X.X.); (M.S.); (Y.L.); (L.Y.); (W.W.); (Y.W.); (M.L.)
- Hubei International Science and Technology Cooperation Base for Intelligent Textile Material Innovation & Application, Wuhan Textile University, Wuhan 430200, China
| | - Mengya Song
- Key Laboratory of Textile Fiber and Products, Ministry of Education, Wuhan Textile University, Wuhan 430200, China; (H.Y.); (X.X.); (M.S.); (Y.L.); (L.Y.); (W.W.); (Y.W.); (M.L.)
- Hubei International Science and Technology Cooperation Base for Intelligent Textile Material Innovation & Application, Wuhan Textile University, Wuhan 430200, China
| | - Ying Lu
- Key Laboratory of Textile Fiber and Products, Ministry of Education, Wuhan Textile University, Wuhan 430200, China; (H.Y.); (X.X.); (M.S.); (Y.L.); (L.Y.); (W.W.); (Y.W.); (M.L.)
- Hubei International Science and Technology Cooperation Base for Intelligent Textile Material Innovation & Application, Wuhan Textile University, Wuhan 430200, China
| | - Liyan Yang
- Key Laboratory of Textile Fiber and Products, Ministry of Education, Wuhan Textile University, Wuhan 430200, China; (H.Y.); (X.X.); (M.S.); (Y.L.); (L.Y.); (W.W.); (Y.W.); (M.L.)
- Hubei International Science and Technology Cooperation Base for Intelligent Textile Material Innovation & Application, Wuhan Textile University, Wuhan 430200, China
| | - Wen Wang
- Key Laboratory of Textile Fiber and Products, Ministry of Education, Wuhan Textile University, Wuhan 430200, China; (H.Y.); (X.X.); (M.S.); (Y.L.); (L.Y.); (W.W.); (Y.W.); (M.L.)
- Hubei International Science and Technology Cooperation Base for Intelligent Textile Material Innovation & Application, Wuhan Textile University, Wuhan 430200, China
| | - Yuedan Wang
- Key Laboratory of Textile Fiber and Products, Ministry of Education, Wuhan Textile University, Wuhan 430200, China; (H.Y.); (X.X.); (M.S.); (Y.L.); (L.Y.); (W.W.); (Y.W.); (M.L.)
- Hubei International Science and Technology Cooperation Base for Intelligent Textile Material Innovation & Application, Wuhan Textile University, Wuhan 430200, China
| | - Mufang Li
- Key Laboratory of Textile Fiber and Products, Ministry of Education, Wuhan Textile University, Wuhan 430200, China; (H.Y.); (X.X.); (M.S.); (Y.L.); (L.Y.); (W.W.); (Y.W.); (M.L.)
- Hubei International Science and Technology Cooperation Base for Intelligent Textile Material Innovation & Application, Wuhan Textile University, Wuhan 430200, China
| | - Dong Wang
- Key Laboratory of Textile Fiber and Products, Ministry of Education, Wuhan Textile University, Wuhan 430200, China; (H.Y.); (X.X.); (M.S.); (Y.L.); (L.Y.); (W.W.); (Y.W.); (M.L.)
- Hubei International Science and Technology Cooperation Base for Intelligent Textile Material Innovation & Application, Wuhan Textile University, Wuhan 430200, China
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9
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Li C, Zhang G, Yuan B. Exceptional Performance of Flame-Retardant Polyurethane Foam: The Suppression Effect on Explosion Pressure and Flame Propagation of Methane-Air Premixed Gas. Materials (Basel) 2023; 16:7602. [PMID: 38138744 PMCID: PMC10745016 DOI: 10.3390/ma16247602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Revised: 12/06/2023] [Accepted: 12/06/2023] [Indexed: 12/24/2023]
Abstract
A self-built gas explosion testing platform was used to explore the quenching effect of flame-retardant polyurethane foam on a gas explosion. The effect of the foam's filling position and length on the explosion suppression performance was explored. The results demonstrate that polyurethane foam exhibits an excellent flame-quenching performance, with a minimum of a 5 cm length of porous material being sufficient to completely quench the flame during propagation. Furthermore, the attenuation function of this porous material on the pressure wave is insignificantly affected by the change in ignition energy. Compared with the explosive state of the empty pipeline, the best suppression effect is obtained when the polyurethane foam is 20 cm in length with a filling position at 1.8 m, and the maximum explosion pressure and maximum rise rate are attenuated by 86.2% and 84.7%, respectively. This work has practical significance for the application of porous materials in explosion suppression and explosion-proof technologies in the chemical industrial processing and oil (gas) storage fields.
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Affiliation(s)
| | | | - Bihe Yuan
- School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan 430070, China; (C.L.); (G.Z.)
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10
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Deng F, Liang Y, Lei Y, Xiong S, Rong J, Hu Y. Development and Identification of Novel α-Glucosidase Inhibitory Peptides from Mulberry Leaves. Foods 2023; 12:3917. [PMID: 37959036 PMCID: PMC10649714 DOI: 10.3390/foods12213917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/15/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
The mulberry leaf is a botanical resource that possesses a substantial quantity of protein. In this study, alcalase hydrolysis conditions of mulberry leaf protein were optimized using the response surface method. The results showed that the optimum conditions were as follows: substrate protein concentration was 0.5% (w/v), enzymatic hydrolysis temperature was 53.0 °C, enzymatic hydrolysis time was 4.7 h, enzyme amount was 17,800 U/g, and pH was 10.5. Then mulberry leaf peptides were separated by ultrafiltration according to molecular weight. Peptides (<3 kDa) were screened and subsequently identified using LC-MS/MS after the evaluation of α-glucosidase inhibition across various fractions. Three novel potential bioactive peptides RWPFFAFM (1101.32 Da), AAGRLPGY (803.91 Da), and VVRDFHNA (957.04 Da) with the lowest average docking energy were screened for molecular dynamics simulation to examine their binding stability with enzymes in a 37 °C simulated human environment. Finally, they were prepared by solid phase synthesis for in vitro verification. The former two peptides exhibited better IC50 values (1.299 mM and 1.319 mM, respectively). These results suggest that the α-glucosidase inhibitory peptides from mulberry leaf protein are potential functional foods or drugs for diabetes treatment, but further in vivo studies are needed to identify the bioavailability and toxicity.
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Affiliation(s)
- Fanghui Deng
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yihao Liang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yuelei Lei
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Shanbai Xiong
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Jianhua Rong
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
| | - Yang Hu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China
- Bioactive Peptide Technology Hubei Engineering Research Center, Jingzhou 434000, China
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11
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Peng D, Yang L, Liang XF, Chai F. Dietary zinc levels affect growth, appetite, and lipid metabolism of Chinese perch (Siniperca chuatsi). Fish Physiol Biochem 2023; 49:1017-1030. [PMID: 37718352 DOI: 10.1007/s10695-023-01238-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 08/27/2023] [Indexed: 09/19/2023]
Abstract
An 84-day feeding experiment was conducted to investigate the effects of dietary Zn (zinc) on growth performance, food intake, and lipid metabolism of Chinese perch (Siniperca chuatsi). Five isonitrogenous and isolipidic diets with differential Zn contents (67, 100, 149, 230, and 410 mg/kg) were fed to 270 fish (35.47 ± 0.49 g). Results showed that fish growth and food intake increased markedly with the dietary 149 mg/kg Zn levels. Meanwhile, the food intake of 149 mg/kg group was significantly higher than that of other treatment groups after feeding for 8 weeks (P < 0.05). The qRT-PCR results showed that the expression of center appetite regulation factors in the hypothalamus was significantly regulated, and 149 mg/kg significantly increased mRNA expression of npy (neuropeptide Y) and decreased pomc (anorexigenic proopiomelanocortin) and cart (cocaine- and amphetamine-regulated transcript) gene expression. Meanwhile, the expressions of the main genes (such as leptin A and ghrelin) involved in peripheral appetite regulation factors were significantly up-regulated firstly and then reduced with the dietary Zn level increased, whereas the expression of cck (cholecystokinin) was significantly up-regulated. Serum AST (aspartate transaminase) and ALT (alanine transaminase) activities in fish fed the diets containing 230 and 410 mg/kg were significantly higher than that in other groups (P < 0.05). The lipid content of liver in 67 and 100 mg/kg groups was significantly higher than other groups (P < 0.05). Furthermore, dietary Zn significantly elevated the serum TG (triglyceride) and TCHO (total cholesterol) content levels (P < 0.05). Fish fed a high Zn diet (149, 230, and 410 mg/kg) dramatically down-regulated expression of srebp1 (sterol regulatory element binding proteins1c) and fas (fatty acid synthetase), but up-regulated expression of pparα (peroxisome proliferators-activated receptor-α) and cpt1 (carnitine palmitoyl transferase I) in the liver. The optimal dietary Zn inclusion level ranged from 146.69 to 152.86 mg/kg diet, based on two-slope broken-line regression analysis of WGR (weight gain rate) and FCR (feed conversion rate) for Chinese perch.
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Affiliation(s)
- Di Peng
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, No.1, Shizishan Street, Hongshan District, Wuhan, 430070, Hubei Province, China
- Ministry of Education, Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Wuhan, 430070, China
| | - Linwei Yang
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, No.1, Shizishan Street, Hongshan District, Wuhan, 430070, Hubei Province, China
- Ministry of Education, Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Wuhan, 430070, China
| | - Xu-Fang Liang
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, No.1, Shizishan Street, Hongshan District, Wuhan, 430070, Hubei Province, China.
- Ministry of Education, Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Wuhan, 430070, China.
| | - Farui Chai
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, No.1, Shizishan Street, Hongshan District, Wuhan, 430070, Hubei Province, China
- Ministry of Education, Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Wuhan, 430070, China
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12
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Guo P, Tian B, Liang J, Yang X, Tang G, Li Q, Liu Q, Zheng K, Chen X, Wu W. An All-Printed, Fast-Response Flexible Humidity Sensor Based on Hexagonal-WO 3 Nanowires for Multifunctional Applications. Adv Mater 2023; 35:e2304420. [PMID: 37358069 DOI: 10.1002/adma.202304420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Indexed: 06/27/2023]
Abstract
The utilization of printing techniques for the development of high-performance humidity sensors holds immense significance for various applications in the fields of the Internet of Things, agriculture, human healthcare, and storage environments. However, the long response time and low sensitivity of current printed humidity sensors limit their practical applications. Herein, a series of high-sensing-performance flexible resistive-type humidity sensors is fabricated by the screen-printing method, and hexagonal tungsten oxide (h-WO3 ) is employed as the humidity-sensing material due to its low cost, strong chemical adsorption ability, and excellent humidity-sensing ability. The as-prepared printed sensors exhibit high sensitivity, good repeatability, outstanding flexibility, low hysteresis, and fast response (1.5 s) in a wide relative humidity (RH) range (11-95% RH). Furthermore, the sensitivity of humidity sensors can be easily adjusted by altering the manufacturing parameters of the sensing layer and interdigital electrode to meet the diverse requirements of specific applications. The printed flexible humidity sensors possess immense potential in various applications, including wearable devices, non-contact measurements, and packaging opening state monitoring.
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Affiliation(s)
- Panwang Guo
- Laboratory of Printable Functional Materials and Printed Electronics, Research Center for Graphic Communication, Printing and Packaging, Wuhan University, Wuhan, 430072, P. R. China
- Sleep Medicine Centre, Zhongnan Hospital of Wuhan University, Wuhan, 430071, P. R. China
| | - Bin Tian
- Laboratory of Printable Functional Materials and Printed Electronics, Research Center for Graphic Communication, Printing and Packaging, Wuhan University, Wuhan, 430072, P. R. China
- Sleep Medicine Centre, Zhongnan Hospital of Wuhan University, Wuhan, 430071, P. R. China
| | - Jing Liang
- Laboratory of Printable Functional Materials and Printed Electronics, Research Center for Graphic Communication, Printing and Packaging, Wuhan University, Wuhan, 430072, P. R. China
| | - Xiuping Yang
- Sleep Medicine Centre, Zhongnan Hospital of Wuhan University, Wuhan, 430071, P. R. China
- Department of Otorhinolaryngology, Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, P. R. China
| | - Guilin Tang
- Laboratory of Printable Functional Materials and Printed Electronics, Research Center for Graphic Communication, Printing and Packaging, Wuhan University, Wuhan, 430072, P. R. China
| | - Quancai Li
- Laboratory of Printable Functional Materials and Printed Electronics, Research Center for Graphic Communication, Printing and Packaging, Wuhan University, Wuhan, 430072, P. R. China
| | - Qun Liu
- Laboratory of Printable Functional Materials and Printed Electronics, Research Center for Graphic Communication, Printing and Packaging, Wuhan University, Wuhan, 430072, P. R. China
| | - Ke Zheng
- Laboratory of Printable Functional Materials and Printed Electronics, Research Center for Graphic Communication, Printing and Packaging, Wuhan University, Wuhan, 430072, P. R. China
| | - Xiong Chen
- Sleep Medicine Centre, Zhongnan Hospital of Wuhan University, Wuhan, 430071, P. R. China
- Department of Otorhinolaryngology, Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan, 430071, P. R. China
| | - Wei Wu
- Laboratory of Printable Functional Materials and Printed Electronics, Research Center for Graphic Communication, Printing and Packaging, Wuhan University, Wuhan, 430072, P. R. China
- Sleep Medicine Centre, Zhongnan Hospital of Wuhan University, Wuhan, 430071, P. R. China
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13
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Xia A, Wu Y, Xiang J, Yin H, Ming J, Qin Z. Quantification of Glucose Metabolism and Nitrogen Utilization in Two Brassicaceae Species under Bicarbonate and Variable Ammonium Soil Conditions. Plants (Basel) 2023; 12:3095. [PMID: 37687342 PMCID: PMC10489622 DOI: 10.3390/plants12173095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Revised: 08/15/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023]
Abstract
In karst habitats under drought conditions, high bicarbonate (high pH), and an abundant nitrate soil environment, bicarbonate regulates the glycolysis (EMP) and pentose phosphate pathways (PPP), which distribute ATP and NADPH, affecting nitrate (NO3-) and ammonium (NH4+) utilization in plants. However, the relationship between EMP PPP and NO3-, and NH4+ utilization and their responses to bicarbonate and variable ammonium still remains elusive. In this study, we used Brassica napus (Bn, a non-karst-adaptable plant) and Orychophragmus violaceus (Ov, a karst-adaptable plant) as plant materials, employed a bidirectional nitrogen-isotope-tracing method, and performed the quantification of the contribution of EMP and PPP. We found that bicarbonate and ammonium inhibited glucose metabolism and nitrogen utilization in Bn under simulated karst habitats. On the other hand, it resulted in a shift from EMP to PPP to promote ammonium utilization in Ov under high ammonium stress in karst habitats. Compared with Bn, bicarbonate promoted glucose metabolism and nitrogen utilization in Ov at low ammonium levels, leading to an increase in photosynthesis, the PPP, carbon and nitrogen metabolizing enzyme activities, nitrate/ammonium utilization, and total inorganic nitrogen assimilation capacity. Moreover, bicarbonate significantly reduced the growth inhibition of Ov by high ammonium, resulting in an improved PPP, RCRUBP, and ammonium utilization to maintain growth. Quantifying the relationships between EMP, PPP, NO3-, and NH4+ utilization can aid the accurate analysis of carbon and nitrogen use efficiency changes in plant species. Therefore, it provides a new prospect to optimize the nitrate/ammonium utilization in plants and further reveals the differential responses of inorganic carbon and nitrogen (C-N) metabolism to bicarbonate and variable ammonium in karst habitats.
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Affiliation(s)
- Antong Xia
- Enshi Tujia & Miao Autonomous Prefecture Academy of Agricultural Sciences, Enshi 445000, China; (A.X.)
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Yanyou Wu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
| | - Jiqian Xiang
- Enshi Tujia & Miao Autonomous Prefecture Academy of Agricultural Sciences, Enshi 445000, China; (A.X.)
| | - Hongqing Yin
- Enshi Tujia & Miao Autonomous Prefecture Academy of Agricultural Sciences, Enshi 445000, China; (A.X.)
| | - Jiajia Ming
- Enshi Tujia & Miao Autonomous Prefecture Academy of Agricultural Sciences, Enshi 445000, China; (A.X.)
| | - Zhanghui Qin
- Enshi Tujia & Miao Autonomous Prefecture Academy of Agricultural Sciences, Enshi 445000, China; (A.X.)
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14
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Ye Z, Wen X, Wan W, Liu F, Bai W, Xu C, Chen H, Gong P, Han G. Precision Grinding Technology of Silicon Carbide (SiC) Ceramics by Longitudinal Torsional Ultrasonic Vibrations. Materials (Basel) 2023; 16:5572. [PMID: 37629863 PMCID: PMC10456965 DOI: 10.3390/ma16165572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 08/27/2023]
Abstract
Silicon carbide (SiC) ceramic material has become the most promising third-generation semiconductor material for its excellent mechanical properties at room temperature and high temperature. However, SiC ceramic machining has serious tool wear, low machining efficiency, poor machining quality and other disadvantages due to its high hardness and high wear resistance, which limits the promotion and application of such materials. In this paper, comparison experiments of longitudinal torsional ultrasonic vibration grinding (LTUVG) and common grinding (CG) of SiC ceramics were conducted, and the longitudinal torsional ultrasonic vibration grinding SiC ceramics cutting force model was developed. In addition, the effects of ultrasonic machining parameters on cutting forces, machining quality and subsurface cracking were investigated, and the main factors and optimal parameters affecting the cutting force improvement rate were obtained by orthogonal tests. The results showed that the maximum improvement of cutting force, surface roughness and subsurface crack fracture depth by longitudinal torsional ultrasonic vibrations were 82.59%, 22.78% and 30.75%, respectively. A longitudinal torsional ultrasonic vibrations cutting force prediction model containing the parameters of tool, material properties and ultrasound was established by the removal characteristics of SiC ceramic material, ultrasonic grinding principle and brittle fracture theory. And the predicted results were in good agreement with the experimental results, and the maximum error was less than 15%. The optimum process parameters for cutting force reduction were a spindle speed of 22,000 rpm, a feed rate of 600 mm/min and a depth of cut of 0.011 mm.
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Affiliation(s)
- Zejiu Ye
- School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan 430074, China
| | - Xu Wen
- School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan 430074, China
| | - Weiqiang Wan
- School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan 430074, China
| | - Fuchu Liu
- School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan 430074, China
- Shenzhen Research Institute, China University of Geosciences, Shenzhen 518063, China
| | - Wei Bai
- School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan 430074, China
- Shenzhen Research Institute, China University of Geosciences, Shenzhen 518063, China
| | - Chao Xu
- Shenzhen Tsingding Technology Co., Ltd., Shenzhen 518108, China
- Division of Advanced Manufacturing, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
| | - Hui Chen
- State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China;
| | - Pan Gong
- State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;
| | - Guangchao Han
- School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan 430074, China
- Shenzhen Research Institute, China University of Geosciences, Shenzhen 518063, China
- Division of Advanced Manufacturing, Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
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15
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Jiang X, Zhou YX, Zhou Q, Cao S. The 2-year postoperative left heart function in marginal donor heart recipients assessing by speckle tracking echocardiography. Int J Cardiovasc Imaging 2023; 39:1449-1459. [PMID: 37184761 DOI: 10.1007/s10554-023-02867-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 05/03/2023] [Indexed: 05/16/2023]
Abstract
This study analyzed the differences and explored the donor/recipient factors between marginal and standard donor heart recipients after heart transplantation (HT) by speckle tracking echocardiography (STE). Seventy-two HT patients were enrolled: 25 standard and 47 marginal donor heart recipients. Thirty HT patients completed 2-year continuous follow-up (1, 6, 12, 24 months). Thirty healthy volunteers were controls. STE was used to track the strain characteristics of the left ventricle and atrium for detecting early changes in marginal donor heart recipients, including left ventricular global longitudinal, circumferential and radial strain (LVGLS, LVGCS, LVGRS) and left atrial strain in systole (LAS-S) and late diastole (LAS-A). The perioperative parameters were similar between the standard and marginal groups. No significant differences were found in left heart size, systolic and diastolic function parameters. Left ventricular systolic strain (LVGLS, LVGCS, LVGRS) and systolic and late diastolic left atrial strain (LAS-S, LAS-A) were lower in the HT recipients than the control group (P < 0.05), but there was no difference between the marginal and standard groups (P > 0.05). LVGLS, LVGCS, and LAS-S were low in the marginal group 1 month after surgery but recovered gradually at 6 months. The patients with donor/recipient body weight ratio < 0.8 group had lower LVGLS and LAS-S. STE showed no significant difference between marginal and standard donor recipients. The LVGLS and LAS-S were lower in those with a smaller donor/recipient body weight ratio. The cardiac function of HT patients was lower in the early postoperative period but gradually recovered over time.
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Affiliation(s)
- Xin Jiang
- Department of Ultrasonography, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei Province, China
| | - Yan-Xiang Zhou
- Department of Ultrasonography, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei Province, China
| | - Qing Zhou
- Department of Ultrasonography, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei Province, China.
| | - Sheng Cao
- Department of Ultrasonography, Renmin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060, Hubei Province, China.
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16
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Wang L, Yin D, Fan Y, Min T, Yi Y, Wang H. Molecular mechanism of the anti-gastric cancer activity of 1,2,3,6-tetra-O-galloyl-β-D-glucose isolated from Trapa bispinosa Roxb. shell in vitro. PLoS One 2022; 17:e0269013. [PMID: 35653387 PMCID: PMC9162355 DOI: 10.1371/journal.pone.0269013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 05/12/2022] [Indexed: 12/03/2022] Open
Abstract
Trapa bispinosa Roxb. is a traditional Chinese food which is well known for its medicinal properties. The shell of Trapa bispinosa has anticancer activity, maybe due to its high content of polyphenols. There are few studies on the chemical composition of Trapa bispinosa shells, then we isolated the active components from Trapa bispinosa shell and clarified the mechanism of its anticancer activity. One monomer compound was separated from the ethanol extract of the Trapa bispinosa shell by fractional extraction, silica gel, Sephadex LH-20 gel column chromatography and liquid phase separation. The structure, identified by NMR was 1,2,3,6-tetra-O-galloyl-β-D-glucose. The results of the CCK-8 assay showed that 1,2,3,6-tetra-O-galloyl-β-D-glucose could significantly inhibit the proliferation of gastric cancer SGC7901 cells, and the effect was close to that of 5-fluorouracil. Here, 1,2,3,6-tetra-O-galloyl-β-D-glucose could affect the cell cycle of SGC7901 cells. At the dose of 200 μg/mL and an incubation time of 48 h, SGC7901 cells remained in the G1 phase, apoptosis occurred, the intracellular calcium ion concentration increased and the mitochondrial membrane potential decreased. Transcriptome sequencing analysis showed that the differentially expressed genes were mainly enriched in the P53 signalling pathway associated with apoptosis. The results of qPCR and Western blot showed that 1,2,3,6-tetra-O-galloyl-β-D-glucose could induce apoptosis of SGC7901 cells by up-regulating the expression levels of P21, PUMA, PERP and IGF-BP3 genes, down-regulating the CyclinD gene, increasing the expression levels of cytochrome C, caspase-3, caspase-9 protein and decreasing that of the protein BCL-2.
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Affiliation(s)
- Limei Wang
- College of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
| | - Dongjie Yin
- College of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
| | - Yanhui Fan
- College of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
| | - Ting Min
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Yang Yi
- College of Food Science and Engineering, Wuhan Polytechnic University, Wuhan, China
| | - Hongxun Wang
- College of Life Science and Technology, Wuhan Polytechnic University, Wuhan, China
- * E-mail:
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