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Xu X, Qi C, Xu S, Fu X, Li Z, Ren H, Qian Q, Guo S. Association between thiamine intake and depression: A national cross-sectional study. J Affect Disord 2024; 352:259-266. [PMID: 38367708 DOI: 10.1016/j.jad.2024.02.053] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 02/12/2024] [Accepted: 02/14/2024] [Indexed: 02/19/2024]
Abstract
BACKGROUND Recent years have seen increasing attention to improving depressive symptoms through dietary intakes, yet the association between thiamine intake and depression remains unclear. The present study aimed to explore this association using data from an American cross-sectional study. METHODS We explored the association of covariates, exposure, and outcome with logistic regression equations. Multivariable regression models were performed to further exclude confounding factors. To investigate nonlinear relationships, we employed restricted cubic splines. Recursive algorithms were utilized to identify inflection points. Additionally, we conducted stratified analyses by age and sex to uncover differences among subgroups. RESULTS When all covariates were adjusted, the association between thiamine intake and depression was not statistically significant [0.93 (0.82, 1.07)]. In the linear trend test using Q1 as the reference, the ORs (95%CI) for Q2, Q3, and Q4 were 0.87 (0.73, 1.04), 0.83 (0.68, 1.00), and 0.92 (0.73, 1.16), which suggested that the association might be nonlinear. We then confirmed this nonlinear relationship with a restricted cubic spline, and the inflection point of 1.35 mg/day was calculated. Before the inflection point, the effect value of the relationship was 0.68 (0.53, 0.89). After the inflection point, no significant association was found [1.10 (0.92, 1.31)]. Stratified analyses revealed that this nonlinear relationship was consistent among women and individuals aged <60 years. DISCUSSION In this cross-sectional study among American general adults, we found a nonlinear association between thiamine intake and depression and further observed differences by age and sex.
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Affiliation(s)
- Xiying Xu
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Chao Qi
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Shuang Xu
- Affiliated Hospital of Shandong Academy of Traditional Chinese Medicine, Jinan, China
| | - Xinhao Fu
- Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Zhiyuan Li
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Hong Ren
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Qian Qian
- The Second Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China.
| | - Shanshan Guo
- Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China.
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Lei Q, Zhang S, Wang J, Qi C, Liu J, Cao D, Li F, Han H, Liu W, Li D, Tang C, Zhou Y. Genome-wide association studies of egg production traits by whole genome sequencing of Laiwu Black chicken. Poult Sci 2024; 103:103705. [PMID: 38598913 DOI: 10.1016/j.psj.2024.103705] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 03/24/2024] [Accepted: 03/26/2024] [Indexed: 04/12/2024] Open
Abstract
Compared to high-yield commercial laying hens, Chinese indigenous chicken breeds have poor egg laying capacity due to the lack of intensive selection. However, as these breeds have not undergone systematic selection, it is possible that there is a greater abundance of genetic variations related to egg laying traits. In this study, we assessed 5 egg number (EN) traits at different stages of the egg-laying period: EN1 (from the first egg to 23 wk), EN2 (from 23 to 35 wk), EN3 (from 35 to 48 wk), EN4 (from the first egg to 35 wk), and EN5 (from the first egg to 48 wk). To investigate the molecular mechanisms underlying egg number traits in a Chinese local chicken breed, we conducted a genome-wide association study (GWAS) using data from whole-genome sequencing (WGS) of 399 Laiwu Black chickens. We obtained a total of 3.01 Tb of raw data with an average depth of 7.07 × per individual. A total of 86 genome-wide suggestive or significant single-nucleotide polymorphisms (SNP) contained within a set of 45 corresponding candidate genes were identified and found to be associated with stages EN1-EN5. The genes vitellogenin 2 (VTG2), lipase maturation factor 1 (LMF1), calcium voltage-gated channel auxiliary subunit alpha2delta 3 (CACNA2D3), poly(A) binding protein cytoplasmic 1 (PABPC1), programmed cell death 11 (PDCD11) and family with sequence similarity 213 member A (FAM213A) can be considered as the candidate genes associated with egg number traits, due to their reported association with animal reproduction traits. Noteworthy, results suggests that VTG2 and PDCD11 are not only involved in the regulation of EN3, but also in the regulation of EN5, implies that VTG2 and PDCD11 have a significant influence on egg production traits. Our study offers valuable genomic insights into the molecular genetic mechanisms that govern egg number traits in a Chinese indigenous egg-laying chicken breed. These findings have the potential to enhance the egg-laying performance of chickens.
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Affiliation(s)
- Qiuxia Lei
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China
| | - Shuer Zhang
- Shandong Animal Husbandry General Station, 250023, Ji'nan, China
| | - Jie Wang
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China
| | - Chao Qi
- Shandong Animal Husbandry General Station, 250023, Ji'nan, China
| | - Jie Liu
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China
| | - Dingguo Cao
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China
| | - Fuwei Li
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China
| | - Haixia Han
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China
| | - Wei Liu
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China
| | - Dapeng Li
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China
| | - Cunwei Tang
- Fujian Sunnzer Biological Technology Development Co. Ltd., 354100, Guang'ze, China
| | - Yan Zhou
- Poultry Institute, Shandong Academy of Agricultural Sciences, 250100, Ji'nan, China.; Poultry Breeding Engineering Technology Center of Shandong Province, 250100, Ji'nan, China..
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Liu MM, Feng XL, Qi C, Zhang SE, Zhang GL. The significance of single-cell transcriptome analysis in epididymis research. Front Cell Dev Biol 2024; 12:1357370. [PMID: 38577504 PMCID: PMC10991796 DOI: 10.3389/fcell.2024.1357370] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Accepted: 03/12/2024] [Indexed: 04/06/2024] Open
Abstract
As a crucial component of the male reproductive system, the epididymis plays multiple roles, including sperm storage and secretion of nutritive fluids for sperm development and maturation. The acquisition of fertilization capacity by sperm occurs during their transport through the epididymis. Compared with the testis, little has been realized about the importance of the epididymis. However, with the development of molecular biology and single-cell sequencing technology, the importance of the epididymis for male fertility should be reconsidered. Recent studies have revealed that different regions of the epididymis exhibit distinct functions and cell type compositions, which are likely determined by variations in gene expression patterns. In this research, we primarily focused on elucidating the cellular composition and region-specific gene expression patterns within different segments of the epididymis and provided detailed insights into epididymal function in male fertility.
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Affiliation(s)
- Meng-Meng Liu
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, Shandong, China
| | - Xin-Lei Feng
- Animal Products Quality and Safety Center of Shandong Province, Jinan, Shandong, China
| | - Chao Qi
- Provincial Animal Husbandry Station of Shandong Province, Jinan, Shandong, China
| | - Shu-Er Zhang
- Provincial Animal Husbandry Station of Shandong Province, Jinan, Shandong, China
| | - Guo-Liang Zhang
- College of Animal Science and Technology, Qingdao Agricultural University, Qingdao, Shandong, China
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Wang J, Liu J, Lei Q, Liu Z, Han H, Zhang S, Qi C, Liu W, Li D, Li F, Cao D, Zhou Y. Elucidation of the genetic determination of body weight and size in Chinese local chicken breeds by large-scale genomic analyses. BMC Genomics 2024; 25:296. [PMID: 38509464 PMCID: PMC10956266 DOI: 10.1186/s12864-024-10185-6] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 03/04/2024] [Indexed: 03/22/2024] Open
Abstract
BACKGROUND Body weight and size are important economic traits in chickens. While many growth-related quantitative trait loci (QTLs) and candidate genes have been identified, further research is needed to confirm and characterize these findings. In this study, we investigate genetic and genomic markers associated with chicken body weight and size. This study provides new insights into potential markers for genomic selection and breeding strategies to improve meat production in chickens. METHODS We performed whole-genome resequencing of and Wenshang Barred (WB) chickens (n = 596) and three additional breeds with varying body sizes (Recessive White (RW), WB, and Luxi Mini (LM) chickens; (n = 50)). We then used selective sweeps of mutations coupled with genome-wide association study (GWAS) to identify genomic markers associated with body weight and size. RESULTS We identified over 9.4 million high-quality single nucleotide polymorphisms (SNPs) among three chicken breeds/lines. Among these breeds, 287 protein-coding genes exhibited positive selection in the RW and WB populations, while 241 protein-coding genes showed positive selection in the LM and WB populations. Genomic heritability estimates were calculated for 26 body weight and size traits, including body weight, chest breadth, chest depth, thoracic horn, body oblique length, keel length, pelvic width, shank length, and shank circumference in the WB breed. The estimates ranged from 0.04 to 0.67. Our analysis also identified a total of 2,522 genome-wide significant SNPs, with 2,474 SNPs clustered around two genomic regions. The first region, located on chromosome 4 (7.41-7.64 Mb), was linked to body weight after ten weeks and body size traits. LCORL, LDB2, and PPARGC1A were identified as candidate genes in this region. The other region, located on chromosome 1 (170.46-171.53 Mb), was associated with body weight from four to eighteen weeks and body size traits. This region contained CAB39L and WDFY2 as candidate genes. Notably, LCORL, LDB2, and PPARGC1A showed highly selective signatures among the three breeds of chicken with varying body sizes. CONCLUSION Overall this study provides a comprehensive map of genomic variants associated with body weight and size in chickens. We propose two genomic regions, one on chromosome 1 and the other on chromosome 4, that could helpful for developing genome selection breeding strategies to enhance meat yield in chickens.
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Affiliation(s)
- Jie Wang
- Poultry Breeding Engineering Technology Center of Shandong Province, Poultry Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong, 250023, China
- Jinan Key Laboratory of Poultry Germplasm Resources Innovation and Healthy Breeding, Jinan, Shandong, 250023, China
| | - Jie Liu
- Poultry Breeding Engineering Technology Center of Shandong Province, Poultry Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong, 250023, China
- Jinan Key Laboratory of Poultry Germplasm Resources Innovation and Healthy Breeding, Jinan, Shandong, 250023, China
| | - Qiuxia Lei
- Poultry Breeding Engineering Technology Center of Shandong Province, Poultry Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong, 250023, China
- Jinan Key Laboratory of Poultry Germplasm Resources Innovation and Healthy Breeding, Jinan, Shandong, 250023, China
| | - Zhihe Liu
- Sichuan agricultural university college of animal science and technology, Chengdu, 611130, China
| | - Haixia Han
- Poultry Breeding Engineering Technology Center of Shandong Province, Poultry Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong, 250023, China
- Jinan Key Laboratory of Poultry Germplasm Resources Innovation and Healthy Breeding, Jinan, Shandong, 250023, China
| | - Shuer Zhang
- Shandong Animal Husbandry General Station, Jinan, 250023, China
| | - Chao Qi
- Shandong Animal Husbandry General Station, Jinan, 250023, China
| | - Wei Liu
- Poultry Breeding Engineering Technology Center of Shandong Province, Poultry Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong, 250023, China
- Jinan Key Laboratory of Poultry Germplasm Resources Innovation and Healthy Breeding, Jinan, Shandong, 250023, China
| | - Dapeng Li
- Poultry Breeding Engineering Technology Center of Shandong Province, Poultry Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong, 250023, China
- Jinan Key Laboratory of Poultry Germplasm Resources Innovation and Healthy Breeding, Jinan, Shandong, 250023, China
| | - Fuwei Li
- Poultry Breeding Engineering Technology Center of Shandong Province, Poultry Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong, 250023, China
- Jinan Key Laboratory of Poultry Germplasm Resources Innovation and Healthy Breeding, Jinan, Shandong, 250023, China
| | - Dingguo Cao
- Poultry Breeding Engineering Technology Center of Shandong Province, Poultry Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong, 250023, China
- Jinan Key Laboratory of Poultry Germplasm Resources Innovation and Healthy Breeding, Jinan, Shandong, 250023, China
| | - Yan Zhou
- Poultry Breeding Engineering Technology Center of Shandong Province, Poultry Institute, Shandong Academy of Agricultural Sciences, Jinan, Shandong, 250023, China.
- Jinan Key Laboratory of Poultry Germplasm Resources Innovation and Healthy Breeding, Jinan, Shandong, 250023, China.
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Qi C, Cheng L, Huang C. Artificial Trachea from Microtissue Engineering and Three-Dimensional Printing for Tracheal Personalized Repair. Tissue Eng Part A 2024. [PMID: 38265006 DOI: 10.1089/ten.tea.2023.0171] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024] Open
Abstract
Millions of people suffer from tracheal defect worldwide each year, while autograft and allograft cannot meet existing treatment needs. Tissue-engineered trachea substitutes represent a promising treatment for tracheal defect, while lack of precisely personalized treatment abilities. Therefore, development of an artificial trachea that can be used for personalized transplantation is highly desired. In this study, we report the design and fabrication of an artificial trachea based on sericin microsphere (SM) by microtissue engineering technology and three-dimensional (3D) printing for personalized repair of tracheal defect. The SM possessed natural cell adhesion and promoting cell proliferation ability. Then, the microtissue was fabricated by coincubation of SM with chondrocytes and tracheal epithelial cells. This microtissue displayed good cytocompatibility and could support seed cell adhesion and proliferation. After that, this microtissue was individually assembled to form an artificial trachea by 3D printing. Notably, artificial trachea had an encouraging complete cartilaginous and epithelial structure after transplantation. Furthermore, the artificial trachea molecularly resembled native trachea as evidenced by similar expression of trachea-critical genes. Altogether, the work demonstrates the effectiveness of microtissue engineering and 3D printing for individual construction of artificial trachea, providing a promising approach for personalized treatment of tracheal defect.
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Affiliation(s)
- Chao Qi
- Department of Pharmacy, Wuhan No.1 Hospital, Wuhan, China
| | - Lu Cheng
- Department of Pharmacy, Wuhan No.1 Hospital, Wuhan, China
| | - Chuanqi Huang
- Department of Pharmacy, Wuhan No.1 Hospital, Wuhan, China
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Zhang J, Hu D, Li L, Qu D, Shi W, Xie L, Jiang Q, Li H, Yu T, Qi C, Fu H. M2 Microglia-derived Exosomes Promote Spinal Cord Injury Recovery in Mice by Alleviating A1 Astrocyte Activation. Mol Neurobiol 2024:10.1007/s12035-024-04026-6. [PMID: 38367135 DOI: 10.1007/s12035-024-04026-6] [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: 10/23/2023] [Accepted: 02/06/2024] [Indexed: 02/19/2024]
Abstract
M2 microglia transplantation has previously demonstrated beneficial effects on spinal cord injury (SCI) by regulating neuroinflammation and enhancing neuronal survival. Exosomes (EXOs), secreted by almost all cell types, embody partial functions and properties of their parent cells. However, the effect of M2 microglia-derived EXOs (M2-EXOs) on SCI recovery and the underlying molecular mechanisms remain unclear. In this study, we isolated M2-EXOs and intravenously introduced them into mice with SCI. Considering the reciprocal communication between microglia and astroglia in both healthy and injured central nervous systems (CNSs), we subsequently focused on the influence of M2-EXOs on astrocyte phenotype regulation. Our findings indicated that M2-EXOs promoted neuron survival and axon preservation, reduced the lesion area, inhibited A1 astrocyte activation, and improved motor function recovery in SCI mice. Moreover, they inhibited the nuclear translocation of p65 and the activation of the NF-κB signalling pathway in A1 astrocytes. Therefore, our research suggests that M2-EXOs mitigate the activation of neurotoxic A1 astrocytes by inhibiting the NF-κB signalling pathway, thereby improving spinal tissue preservation and motor function recovery following SCI. This positions M2-EXOs as a promising therapeutic strategy for SCI.
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Affiliation(s)
- Jing Zhang
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
- Medical Department of, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Die Hu
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, Qingdao, 266071, China
| | - Liping Li
- Department of Bone Surgery, Qingdao Central Hospital, Qingdao, 266000, China
| | - Di Qu
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
- Medical Department of, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Weipeng Shi
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
- Medical Department of, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Lei Xie
- Medical Department of, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
- Department of Orthopedic Surgery, Qingdao Hospital, University of Health and Rehabilitation Sciences (Qingdao Municipal Hospital), Qingdao, 266071, China
| | - Qi Jiang
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
- Medical Department of, Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Haifeng Li
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China
| | - Tengbo Yu
- Department of Orthopedic Surgery, Qingdao Hospital, University of Health and Rehabilitation Sciences (Qingdao Municipal Hospital), Qingdao, 266071, China
- Institute of Sports Medicine and Health, Qingdao University, Qingdao, 266000, China
| | - Chao Qi
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China.
| | - Haitao Fu
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao, 266003, China.
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Wang Z, Zou R, Yi J, Wang Y, Hu H, Qi C, Lai W, Guo Y, Xianyu Y. "Four-In-One" Multifunctional Dandelion-Like Gold@platinum Nanoparticles-Driven Multimodal Lateral Flow Immunoassay. Small 2024:e2310869. [PMID: 38363059 DOI: 10.1002/smll.202310869] [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: 11/24/2023] [Revised: 02/03/2024] [Indexed: 02/17/2024]
Abstract
The traditional lateral flow immunoassay (LFIA) with a single signal output mode may encounter challenges such as low sensitivity, poor detection range, and susceptibility to external interferences. These limitations hinder its ability to meet the growing demand for advanced LFIA. To address these issues, the rational development of multifunctional labels for multimodal LFIA emerges as a promising strategy. Herein, this study reports a multimodal LFIA using "four-in-one" multifunctional dandelion-like gold@platinum nanoparticles (MDGP). The inherent properties of MDGP, such as the broad absorption spectrum, porous dandelion-like nanostructure, and bimetallic composition with gold and platinum, endow them with capacities in dual spectral-overlapped fluorescence quenching, optical readout, catalytic activity, and photothermal effect. Benefiting from their multifunctional properties, the MDGP-LFIA enables multimodal outputs including fluorescent, colorimetric, and photothermal signals. This multimodal MDGP-LFIA allows for the detection of acetamiprid at a range of 0.01-50 ng mL-1 , with the lowest qualitative and quantitative detection results of 0.5 and 0.008 ng mL-1 , respectively, significantly better than the traditional gold nanoparticles-based LFIA. The diversity, complementarity, and synergistic effect of integrated output signals in this multimodal MDGP-LFIA improve the flexibility, practicability, and accuracy of detection, holding great promise as a point-of-care testing platform in versatile application scenarios.
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Affiliation(s)
- Zexiang Wang
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Rubing Zou
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China
| | - Jiuhong Yi
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Yidan Wang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
| | - Hong Hu
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, China
| | - Chao Qi
- Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang Province, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016, China
| | - Weihua Lai
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang, 330047, China
| | - Yirong Guo
- Institute of Pesticide and Environmental Toxicology, Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province, Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Zhejiang University, Hangzhou, 310058, China
| | - Yunlei Xianyu
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, China
- Key Laboratory of Precision Medicine in Diagnosis and Monitoring Research of Zhejiang Province, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, 310016, China
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Qu D, Zhang J, Li L, Fu H, Zhang D, Tang X, Han X, Qi C. [Comparison of intraoperative effects of computer navigation-assisted and simple arthroscopic reconstruction of posterior cruciate ligament tibial tunnel]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2024; 38:155-161. [PMID: 38385227 PMCID: PMC10882236 DOI: 10.7507/1002-1892.202311012] [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] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Objective To compare the intraoperative effects of computer navigation-assisted versus simple arthroscopic reconstruction of posterior cruciate ligament (PCL) tibial tunnel. Methods The clinical data of 73 patients with PCL tears who were admitted between June 2021 and June 2022 and met the selection criteria were retrospectively analysed, of whom 34 cases underwent PCL tibial tunnel reconstruction with navigation-assisted arthroscopy (navigation group) and 39 cases underwent PCL tibial tunnel reconstruction with arthroscopy alone (control group). There was no significant difference in baseline data between the two groups, including gender, age, body mass index, side of injury, time from injury to surgery, preoperative posterior drawer test, knee range of motion (ROM), Tegner score, Lysholm score, and International Knee Documentation Committee (IKDC) score between the two groups ( P>0.05). The perioperative indicators (operation time and number of guide wire drillings) were recorded and compared between the two groups. The angle between the graft and the tibial tunnel and the exit positions of the tibial tunnel in the coronal, sagittal, and transverse planes respectively were measured on MRI at 1 day after operation. The knee ROM, Tegner score, Lysholm score, and IKDC score were evaluated before operation and at last follow-up. Results The operation time in the navigation group was shorter than that in the control group, and the number of intraoperative guide wire drillings was less than that in the control group, the differences were significant ( P<0.05). Patients in both groups were followed up 12-17 months, with an average of 12.8 months. There was no perioperative complications such as vascular and nerve damage, deep venous thrombosis and infection of lower extremity. During the follow-up, there was no re-injuries in either group and no revision was required. The results showed that there was no significant difference in the exit positions of the tibial tunnel in the coronal, sagittal, and transverse planes between the two groups ( P>0.05), but the angle between the graft and the tibial tunnel was significantly greater in the navigation group than in the control group ( P<0.05). At last follow-up, 30, 3, 1 and 0 cases were rated as negative, 1+, 2+, and 3+ of posterior drawer test in the navigation group and 33, 5, 1, and 0 cases in the control group, respectively, which significantly improved when compared with the preoperative values ( P<0.05), but there was no significant difference between the two groups ( P>0.05). At last follow-up, ROM, Tegner score, Lysholm score, and IKDC score of the knee joint significantly improved in both groups when compared with preoperative values ( P<0.05), but there was no significant difference in the difference in preoperative and postoperative indicators between the two groups ( P>0.05). Conclusion Computer-navigated arthroscopic PCL tibial tunnel reconstruction can quickly and accurately prepare tunnels with good location and orientation, with postoperative functional scores comparable to arthroscopic PCL tibial tunnel reconstruction alone.
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Affiliation(s)
- Di Qu
- Qingdao Medical College of Qingdao University, Qingdao Shandong, 266073, P. R. China
| | - Jing Zhang
- Qingdao Medical College of Qingdao University, Qingdao Shandong, 266073, P. R. China
| | - Liping Li
- Department of Orthopedic Surgery, Qingdao Central Hospital, Qingdao Shandong, 266042, P. R. China
| | - Haitao Fu
- Department of Sports Medicine, the Affiliated Hospital of Qingdao University, Qingdao Shandong, 266103, P. R. China
| | - Dongfang Zhang
- Department of Sports Medicine, the Affiliated Hospital of Qingdao University, Qingdao Shandong, 266103, P. R. China
| | - Xinyu Tang
- Qingdao Medical College of Qingdao University, Qingdao Shandong, 266073, P. R. China
| | - Xinkun Han
- Qingdao Medical College of Qingdao University, Qingdao Shandong, 266073, P. R. China
| | - Chao Qi
- Department of Sports Medicine, the Affiliated Hospital of Qingdao University, Qingdao Shandong, 266103, P. R. China
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Zhang J, Zhang X, Jiang Q, Qu D, Hu Y, Qi C, Fu H. [Experimental study of M2 microglia transplantation promoting spinal cord injury repair in mice]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2024; 38:198-205. [PMID: 38385233 PMCID: PMC10882233 DOI: 10.7507/1002-1892.202311093] [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] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Objective To investigate the effect of M2 microglia (M2-MG) transplantation on spinal cord injury (SCI) repair in mice. Methods Primary MG were obtained from the cerebral cortex of 15 C57BL/6 mice born 2-3 days old by pancreatic enzyme digestion and identified by immunofluorescence staining of Iba1. Then the primary MG were co-cultured with interleukin 4 for 48 hours (experimental group) to induce into M2 phenotype and identified by immunofluorescence staining of Arginase 1 (Arg-1) and Iba1. The normal MG were harvested as control (control group). The dorsal root ganglion (DRG) of 5 C57BL/6 mice born 1 week old were co-cultured with M2-MG for 5 days to observe the axon length, the DRG alone was used as control. Forty-two 6-week-old female C57BL/6 mice were randomly divided into sham group ( n=6), SCI group ( n=18), and SCI+M2-MG group ( n=18). In sham group, only the laminae of T 10 level were removed; SCI group and SCI+M2-MG group underwent SCI modeling, and SCI+M2-MG group was simultaneously injected with M2-MG. The survival of mice in each group was observed after operation. At immediate (0), 3, 7, 14, 21, and 28 days after operation, the motor function of mice was evaluated by Basso Mouse Scale (BMS) score, and the gait was evaluated by footprint experiment at 28 days. The spinal cord tissue was taken after operation for immunofluorescence staining, in which glial fibrillary acidic protein (GFAP) staining at 7, 14, and 28 days was used to observe the injured area of the spinal cord, neuronal nuclei antigen staining at 28 days was used to observe the survival of neurons, and GFAP/C3 double staining at 7 and 14 days was used to observe the changes in the number of A1 astrocytes. Results The purity of MG in vitro reached 90%, and the most of the cells were polarized into M2 phenotype identified by Arg-1 immunofluorescence staining. M2-MG promoted the axon growth when co-cultured with DRGs in vitro ( P<0.05). All groups of mice survived until the experiment was completed. The hind limb motor function of SCI group and SCI+M2-MG group gradually recovered over time. Among them, the SCI+M2-MG group had significantly higher BMS scores than the SCI group at 21 and 28 days ( P<0.05), and the dragging gait significantly improved at 28 days, but it did not reach the level of the sham group. Immunofluorescence staining showed that compared with the SCI group, the SCI+M2-MG group had a smaller injury area at 7, 14, and 28 days, an increase in neuronal survival at 28 days, and a decrease in the number of A1 astrocytes at 7 and 14 days, with significant differences ( P<0.05). Conclusion M2-MG transplantation improves the motor function of the hind limbs of SCI mice by promoting neuron survival and axon regeneration. This neuroprotective effect is related to the inhibition of A1 astrocytes polarization.
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Affiliation(s)
- Jing Zhang
- Qingdao Medical College of Qingdao University, Qingdao Shandong, 266073, P. R. China
| | - Xiaoyue Zhang
- Qingdao Medical College of Qingdao University, Qingdao Shandong, 266073, P. R. China
| | - Qi Jiang
- Qingdao Medical College of Qingdao University, Qingdao Shandong, 266073, P. R. China
| | - Di Qu
- Qingdao Medical College of Qingdao University, Qingdao Shandong, 266073, P. R. China
| | - Yusheng Hu
- Qingdao Medical College of Qingdao University, Qingdao Shandong, 266073, P. R. China
| | - Chao Qi
- Department of Sports Medicine, the Affiliated Hospital of Qingdao University, Qingdao Shandong, 266103, P. R. China
| | - Haitao Fu
- Department of Sports Medicine, the Affiliated Hospital of Qingdao University, Qingdao Shandong, 266103, P. R. China
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Liu S, Feng Y, Tan Y, Chen J, Yang T, Wang X, Li L, Wang F, Liang H, Zhong JL, Qi C, Lei X. Photosensitizer-loaded hydrogels: A new antibacterial dressing. Wound Repair Regen 2024. [PMID: 38308577 DOI: 10.1111/wrr.13156] [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: 05/16/2023] [Revised: 11/29/2023] [Accepted: 12/27/2023] [Indexed: 02/05/2024]
Abstract
Bacterial wound infection has emerged as a pivotal threat to human health worldwide, and the situation has worsened owing to the gradual increase in antibiotic-resistant bacteria caused by the improper use of antibiotics. To reduce the use of antibiotics and avoid the increase in antibiotic-resistant bacteria, researchers are increasingly paying attention to photodynamic therapy, which uses light to produce reactive oxygen species to kill bacteria. Treating bacteria-infected wounds by photodynamic therapy requires fixing the photosensitizer (PS) at the wound site and maintaining a certain level of wound humidity. Hydrogels are materials with a high water content and are well suited for fixing PSs at wound sites for antibacterial photodynamic therapy. Therefore, hydrogels are often loaded with PSs for treating bacteria-infected wounds via antibacterial photodynamic therapy. In this review, we systematically summarised the antibacterial mechanisms and applications of PS-loaded hydrogels for treating bacteria-infected wounds via photodynamic therapy. In addition, the recent studies and the research status progresses of novel antibacterial hydrogels are discussed. Finally, the challenges and future prospects of PS-loaded hydrogels are reviewed.
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Affiliation(s)
- Shunying Liu
- Department of Dermatology, Daping Hospital, Army Medical University, Chongqing, China
- Chongqing Engineering Research Center of Organ Intelligent Bio-Manufacturing, Chongqing, China
| | - Yanhai Feng
- Department of Dermatology, Daping Hospital, Army Medical University, Chongqing, China
- Chongqing Engineering Research Center of Organ Intelligent Bio-Manufacturing, Chongqing, China
- Army 953 Hospital, Shigatse Branch of Xinqiao Hospital, Army Medical University, Shigatse, China
| | - Yang Tan
- Department of Dermatology, Daping Hospital, Army Medical University, Chongqing, China
- Chongqing Engineering Research Center of Organ Intelligent Bio-Manufacturing, Chongqing, China
| | - Jinyi Chen
- Department of Dermatology, Daping Hospital, Army Medical University, Chongqing, China
- Chongqing Engineering Research Center of Organ Intelligent Bio-Manufacturing, Chongqing, China
| | - Tao Yang
- Department of Dermatology, Daping Hospital, Army Medical University, Chongqing, China
- Chongqing Engineering Research Center of Organ Intelligent Bio-Manufacturing, Chongqing, China
| | - Xiaoyu Wang
- Department of Dermatology, Daping Hospital, Army Medical University, Chongqing, China
- Chongqing Engineering Research Center of Organ Intelligent Bio-Manufacturing, Chongqing, China
| | - Lingfei Li
- Department of Dermatology, Daping Hospital, Army Medical University, Chongqing, China
- Chongqing Engineering Research Center of Organ Intelligent Bio-Manufacturing, Chongqing, China
| | - Fangjie Wang
- The First Research Department, Daping Hospital, Army Medical University, Chongqing, China
| | - Huaping Liang
- The First Research Department, Daping Hospital, Army Medical University, Chongqing, China
| | - Julia-Li Zhong
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, China
| | - Chao Qi
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, China
| | - Xia Lei
- Department of Dermatology, Daping Hospital, Army Medical University, Chongqing, China
- Chongqing Engineering Research Center of Organ Intelligent Bio-Manufacturing, Chongqing, China
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11
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Sun J, Qi C, Liu Y, Gao F, Fu X, Tian Y. Evaluation of Multiple Liver Cancer Scoring Systems. Adv Biol (Weinh) 2024; 8:e2300301. [PMID: 37863815 DOI: 10.1002/adbi.202300301] [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: 07/08/2023] [Revised: 09/17/2023] [Indexed: 10/22/2023]
Abstract
Liver cancer is one of the most common malignant tumors in the world, and its incidence and mortality are increasing year by year. The prognosis of liver cancer depends on the stage of liver cancer, the treatment method, the liver function, and individual differences. The prognosis of liver cancer mainly worsens with the progression of the stage. The prediction and staging system of liver cancer prognosis plays a very important role in the outcome of liver cancer prognosis, providing some guidance for clinical practice and bringing benefits for patients. This article reports on the prediction models and staging systems that have been applied in the field of liver cancer in the past 5 years, objectively analyzes the advantages and disadvantages, applicable population of each model and staging system, and searches for other patient and clinical characteristics that need to be considered for successfully establishing a prediction model, aiming to improve the specificity, sensitivity, and accuracy of liver cancer prediction and increase the overall survival rate of liver cancer.
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Affiliation(s)
- Jingchao Sun
- Department of Biliary and Pancreatic Surgery, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, 030032, China
| | - Chao Qi
- Department of Biliary and Pancreatic Surgery, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, 030032, China
| | - Ya Liu
- Department of Biliary and Pancreatic Surgery, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, 030032, China
| | - Fei Gao
- Department of Biliary and Pancreatic Surgery, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, 030032, China
| | - Xifeng Fu
- Department of Biliary and Pancreatic Surgery, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, 030032, China
| | - Yanzhang Tian
- Department of Biliary and Pancreatic Surgery, Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan, 030032, China
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12
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Nozick SH, Ozer EA, Medernach R, Kochan TJ, Kumar R, Mills JO, Wunderlink RG, Qi C, Hauser AR. Phenotypes of a Pseudomonas aeruginosa hypermutator lineage that emerged during prolonged mechanical ventilation in a patient without cystic fibrosis. mSystems 2024; 9:e0048423. [PMID: 38132670 PMCID: PMC10804958 DOI: 10.1128/msystems.00484-23] [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: 05/19/2023] [Accepted: 11/13/2023] [Indexed: 12/23/2023] Open
Abstract
Hypermutator lineages of Pseudomonas aeruginosa arise frequently during the years of airway infection experienced by patients with cystic fibrosis and bronchiectasis but are rare in the absence of chronic infection and structural lung disease. Since the onset of the COVID-19 pandemic, large numbers of patients have remained mechanically ventilated for extended periods of time. These patients are prone to acquire bacterial pathogens that persist for many weeks and have the opportunity to evolve within the pulmonary environment. However, little is known about what types of adaptations occur in these bacteria and whether these adaptations mimic those observed in chronic infections. We describe a COVID-19 patient with a secondary P. aeruginosa lung infection in whom the causative bacterium persisted for >50 days. Over the course of this infection, a hypermutator lineage of P. aeruginosa emerged and co-existed with a non-hypermutator lineage. Compared to the parental lineage, the hypermutator lineage evolved to be less cytotoxic and less virulent. Genomic analyses of the hypermutator lineage identified numerous mutations, including in the mismatch repair gene mutL and other genes frequently mutated in individuals with cystic fibrosis. Together, these findings demonstrate that hypermutator lineages can emerge when P. aeruginosa persists following acute infections such as ventilator-associated pneumonia and that these lineages have the potential to affect patient outcomes.IMPORTANCEPseudomonas aeruginosa may evolve to accumulate large numbers of mutations in the context of chronic infections such as those that occur in individuals with cystic fibrosis. However, these "hypermutator" lineages are rare following acute infections. Here, we describe a non-cystic fibrosis patient with COVID-19 pneumonia who remained mechanically ventilated for months. The patient became infected with a strain of P. aeruginosa that evolved to become a hypermutator. We demonstrate that hypermutation led to changes in cytotoxicity and virulence. These findings are important because they demonstrate that P. aeruginosa hypermutators can emerge following acute infections and that they have the potential to affect patient outcomes in this setting.
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Affiliation(s)
- Sophia H. Nozick
- Department of Microbiology-Immunology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Egon A. Ozer
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- Center for Pathogen Genomics and Microbial Evolution, Robert J. Havey Institute for Global Health, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Rachel Medernach
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Travis J. Kochan
- Department of Microbiology-Immunology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Rebecca Kumar
- />Department of Medicine, Division of Infectious Diseases, Georgetown University, Washington, DC, USA
| | - Jori O. Mills
- Department of Microbiology-Immunology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Richard G. Wunderlink
- Department of Medicine, Division of Pulmonary and Critical Care, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Chao Qi
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Alan R. Hauser
- Department of Microbiology-Immunology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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13
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Ling-Hu T, Simons LM, Dean TJ, Rios-Guzman E, Caputo MT, Alisoltani A, Qi C, Malczynski M, Blanke T, Jennings LJ, Ison MG, Achenbach CJ, Larkin PM, Kaul KL, Lorenzo-Redondo R, Ozer EA, Hultquist JF. Integration of individualized and population-level molecular epidemiology data to model COVID-19 outcomes. Cell Rep Med 2024; 5:101361. [PMID: 38232695 PMCID: PMC10829796 DOI: 10.1016/j.xcrm.2023.101361] [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: 12/02/2022] [Revised: 08/07/2023] [Accepted: 12/11/2023] [Indexed: 01/19/2024]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variants with enhanced transmissibility and immune escape have emerged periodically throughout the coronavirus disease 2019 (COVID-19) pandemic, but the impact of these variants on disease severity has remained unclear. In this single-center, retrospective cohort study, we examined the association between SARS-CoV-2 clade and patient outcome over a two-year period in Chicago, Illinois. Between March 2020 and March 2022, 14,252 residual diagnostic specimens were collected from SARS-CoV-2-positive inpatients and outpatients alongside linked clinical and demographic metadata, of which 2,114 were processed for viral whole-genome sequencing. When controlling for patient demographics and vaccination status, several viral clades were associated with risk for hospitalization, but this association was negated by the inclusion of population-level confounders, including case count, sampling bias, and shifting standards of care. These data highlight the importance of integrating non-virological factors into disease severity and outcome models for the accurate assessment of patient risk.
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Affiliation(s)
- Ted Ling-Hu
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; Center for Pathogen Genomics and Microbial Evolution, Northwestern University Havey Institute for Global Health, Chicago, IL 60611, USA
| | - Lacy M Simons
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; Center for Pathogen Genomics and Microbial Evolution, Northwestern University Havey Institute for Global Health, Chicago, IL 60611, USA
| | - Taylor J Dean
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; Center for Pathogen Genomics and Microbial Evolution, Northwestern University Havey Institute for Global Health, Chicago, IL 60611, USA
| | - Estefany Rios-Guzman
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; Center for Pathogen Genomics and Microbial Evolution, Northwestern University Havey Institute for Global Health, Chicago, IL 60611, USA
| | - Matthew T Caputo
- Havey Institute for Global Health, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Arghavan Alisoltani
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; Center for Pathogen Genomics and Microbial Evolution, Northwestern University Havey Institute for Global Health, Chicago, IL 60611, USA
| | - Chao Qi
- Clinical Microbiology Laboratory, Department of Pathology, Northwestern Memorial Hospital, Chicago, IL 60611, USA
| | - Michael Malczynski
- Clinical Microbiology Laboratory, Department of Pathology, Northwestern Memorial Hospital, Chicago, IL 60611, USA
| | - Timothy Blanke
- Diagnostic Molecular Biology Laboratory, Northwestern Memorial Hospital, Chicago, IL 60611, USA
| | - Lawrence J Jennings
- Clinical Microbiology Laboratory, Department of Pathology, Northwestern Memorial Hospital, Chicago, IL 60611, USA
| | - Michael G Ison
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Chad J Achenbach
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; Havey Institute for Global Health, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Paige M Larkin
- Department of Molecular Microbiology, Northshore University HealthSystem, Evanston, IL 60201, USA
| | - Karen L Kaul
- Department of Pathology, Northshore University HealthSystem, Evanston, IL 60201, USA
| | - Ramon Lorenzo-Redondo
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; Center for Pathogen Genomics and Microbial Evolution, Northwestern University Havey Institute for Global Health, Chicago, IL 60611, USA
| | - Egon A Ozer
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; Center for Pathogen Genomics and Microbial Evolution, Northwestern University Havey Institute for Global Health, Chicago, IL 60611, USA
| | - Judd F Hultquist
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA; Center for Pathogen Genomics and Microbial Evolution, Northwestern University Havey Institute for Global Health, Chicago, IL 60611, USA.
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14
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Lavriha P, Qi C, Korkhov VM. Expression, Purification, and Nanodisc Reconstitution of Connexin-43 Hemichannels for Structural Characterization by Cryo-Electron Microscopy. Methods Mol Biol 2024; 2801:29-43. [PMID: 38578411 DOI: 10.1007/978-1-0716-3842-2_3] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Connexins are polytopic domain membrane proteins that form hexameric hemichannels (HCs) which can assemble into gap junction channels (GJCs) at the interface of two neighboring cells. The HCs may be involved in ion and small-molecule transport across the cellular plasma membrane in response to various stimuli. Despite their importance, relatively few structures of connexin HCs are available to date, compared to the structures of the GJCs. Here, we describe a protocol for expression, purification, and nanodisc reconstitution of connexin-43 (Cx43) HCs, which we have recently structurally characterized using cryo-EM analysis. Application of similar protocols to other connexin family members will lead to breakthroughs in the understanding of the structure and function of connexin HCs.
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Affiliation(s)
- Pia Lavriha
- Laboratory of Biomolecular Research, Paul Scherrer Institute, Villigen, Switzerland
| | - Chao Qi
- Institute of Molecular Biology and Biophysics, ETH, Zurich, Switzerland
| | - Volodymyr M Korkhov
- Laboratory of Biomolecular Research, Paul Scherrer Institute, Villigen, Switzerland.
- Institute of Molecular Biology and Biophysics, ETH, Zurich, Switzerland.
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15
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Qi C, Verheijen BM, Kokubo Y, Shi Y, Tetter S, Murzin AG, Nakahara A, Morimoto S, Vermulst M, Sasaki R, Aronica E, Hirokawa Y, Oyanagi K, Kakita A, Ryskeldi-Falcon B, Yoshida M, Hasegawa M, Scheres SHW, Goedert M. Tau filaments from amyotrophic lateral sclerosis/parkinsonism-dementia complex adopt the CTE fold. Proc Natl Acad Sci U S A 2023; 120:e2306767120. [PMID: 38100415 PMCID: PMC10743375 DOI: 10.1073/pnas.2306767120] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 04/26/2023] [Accepted: 10/31/2023] [Indexed: 12/17/2023] Open
Abstract
The amyotrophic lateral sclerosis/parkinsonism-dementia complex (ALS/PDC) of the island of Guam and the Kii peninsula of Japan is a fatal neurodegenerative disease of unknown cause that is characterized by the presence of abundant filamentous tau inclusions in brains and spinal cords. Here, we used electron cryo-microscopy to determine the structures of tau filaments from the cerebral cortex of three cases of ALS/PDC from Guam and eight cases from Kii, as well as from the spinal cord of two of the Guam cases. Tau filaments had the chronic traumatic encephalopathy (CTE) fold, with variable amounts of Type I and Type II filaments. Paired helical tau filaments were also found in three Kii cases and tau filaments with the corticobasal degeneration fold in one Kii case. We identified a new Type III CTE tau filament, where protofilaments pack against each other in an antiparallel fashion. ALS/PDC is the third known tauopathy with CTE-type filaments and abundant tau inclusions in cortical layers II/III, the others being CTE and subacute sclerosing panencephalitis. Because these tauopathies are believed to have environmental causes, our findings support the hypothesis that ALS/PDC is caused by exogenous factors.
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Affiliation(s)
- Chao Qi
- Medical Research Council, Laboratory of Molecular Biology, CambridgeCB2 0QH, United Kingdom
| | - Bert M. Verheijen
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA90089
| | - Yasumasa Kokubo
- Graduate School of Regional Innovation Studies, Mie University, Tsu514-8507, Japan
| | - Yang Shi
- Medical Research Council, Laboratory of Molecular Biology, CambridgeCB2 0QH, United Kingdom
| | - Stephan Tetter
- Medical Research Council, Laboratory of Molecular Biology, CambridgeCB2 0QH, United Kingdom
| | - Alexey G. Murzin
- Medical Research Council, Laboratory of Molecular Biology, CambridgeCB2 0QH, United Kingdom
| | - Asa Nakahara
- Department of Pathology, Brain Research Institute, Niigata University, Niigata951-8585, Japan
| | - Satoru Morimoto
- Department of Oncologic Pathology, Graduate School of Medicine, Mie University, Tsu514-8507, Japan
| | - Marc Vermulst
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA90089
| | - Ryogen Sasaki
- Department of Nursing, Suzuka University of Medical Science, Suzuka513-8670, Japan
| | - Eleonora Aronica
- Department of Neuropathology, Amsterdam University Medical Centers (UMC), University of Amsterdam, Amsterdam Neuroscience, Amsterdam1105 AZ, The Netherlands
| | - Yoshifumi Hirokawa
- Department of Oncologic Pathology, Graduate School of Medicine, Mie University, Tsu514-8507, Japan
| | - Kiyomitsu Oyanagi
- Department of Brain Disease Research, Shinshu University School of Medicine, Matsumoto390-8621, Japan
| | - Akiyoshi Kakita
- Department of Pathology, Brain Research Institute, Niigata University, Niigata951-8585, Japan
| | | | - Mari Yoshida
- Department of Neuropathology, Institute for Medical Science of Aging, Aichi Medical University, Nagakute480-1195, Japan
| | - Masato Hasegawa
- Department of Brain and Neuroscience, Tokyo Metropolitan Institute of Medical Science, Tokyo156-8506, Japan
| | - Sjors H. W. Scheres
- Medical Research Council, Laboratory of Molecular Biology, CambridgeCB2 0QH, United Kingdom
| | - Michel Goedert
- Medical Research Council, Laboratory of Molecular Biology, CambridgeCB2 0QH, United Kingdom
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16
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Kling K, Osborn R, Menon A, Williams J, Cardew R, Al-Heeti O, Santoiemma P, Angarone M, Gatesy S, Kochan T, Zembower T, Krueger K, Ozer EA, Qi C. A cluster of six respiratory cultures positive for Mycobacterium xenopi -Clinical characteristics and genomic characterization. J Clin Tuberc Other Mycobact Dis 2023; 33:100397. [PMID: 37727871 PMCID: PMC10505978 DOI: 10.1016/j.jctube.2023.100397] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023] Open
Abstract
Mycobacterium xenopi is a slow growing non-tuberculous mycobacterium (NTM) isolated from water systems and has been associated with pseudo-outbreaks and pulmonary infections in humans. We observed a cluster of six respiratory cultures positive for M. xenopi within a six-month period at our institution, approximately double our normal isolation rate of this organism. Only three of the six cases met clinical, radiographic, and microbiologic criteria for NTM infection. An investigation led by our hospital's Healthcare Epidemiology and Infection Program found no epidemiologic link between the six patients. Three isolates underwent whole-genome sequencing (WGS) and phylogenetic analysis confirmed they were non-clonal. In vitro susceptibility data found the isolates were sensitive to macrolides, moxifloxacin, and rifabutin. Our findings suggest that isolation of M. xenopi from pulmonary specimens may be increasing, further defines the genomic population structure of this potentially emerging infection, and establishes WGS as a useful tool for outbreak investigation strain typing.
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Affiliation(s)
- Kendall Kling
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Rebecca Osborn
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Adil Menon
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Janna Williams
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Ryan Cardew
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Omar Al-Heeti
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Phillip Santoiemma
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Michael Angarone
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Samuel Gatesy
- Department of Microbiology and Immunology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Travis Kochan
- Department of Microbiology and Immunology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Teresa Zembower
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Karen Krueger
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Egon A. Ozer
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Department of Microbiology and Immunology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Center for Pathogen Genomics and Microbial Evolution, Havey Institute for Global Health, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Chao Qi
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
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Fu L, Qi C, Sun T, Huang K, Lin J, Huang P. Glucose oxidase-instructed biomineralization of calcium-based biomaterials for biomedical applications. Exploration (Beijing) 2023; 3:20210110. [PMID: 38264686 PMCID: PMC10742215 DOI: 10.1002/exp.20210110] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Accepted: 02/22/2023] [Indexed: 01/25/2024]
Abstract
In recent years, glucose oxidase (GOx) has aroused great research interest in the treatment of diseases related to abnormal glucose metabolisms like cancer and diabetes. However, as a kind of endogenous oxido-reductase, GOx suffers from poor stability and system toxicity in vivo. In order to overcome this bottleneck, GOx is encapsulated in calcium-based biomaterials (CaXs) such as calcium phosphate (CaP) and calcium carbonate (CaCO3) by using it as a biotemplate to simulate the natural biomineralization process. The biomineralized GOx holds improved stability and reduced side effects, due to the excellent bioactivity, biocompatibitliy, and biodegradability of CaXs. In this review, the state-of-the-art studies on GOx-mineralized CaXs are introduced with an emphasis on their application in various biomedical fields including disease diagnosis, cancer treatment, and diabetes management. The current challenges and future perspectives of GOx-mineralized CaXs are discussed, which is expected to promote further studies on these smart GOx-mineralized CaXs biomaterials for practical applications.
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Affiliation(s)
- Lian‐Hua Fu
- Marshall Laboratory of Biomedical EngineeringInternational Cancer Center, Laboratory of Evolutionary Theranostics (LET)School of Biomedical EngineeringShenzhen University Medical SchoolShenzhen UniversityShenzhenChina
| | - Chao Qi
- Marshall Laboratory of Biomedical EngineeringInternational Cancer Center, Laboratory of Evolutionary Theranostics (LET)School of Biomedical EngineeringShenzhen University Medical SchoolShenzhen UniversityShenzhenChina
| | - Tuanwei Sun
- Marshall Laboratory of Biomedical EngineeringInternational Cancer Center, Laboratory of Evolutionary Theranostics (LET)School of Biomedical EngineeringShenzhen University Medical SchoolShenzhen UniversityShenzhenChina
| | - Kai Huang
- Department of Materials Science and EngineeringUniversity of TorontoTorontoOntarioCanada
| | - Jing Lin
- Marshall Laboratory of Biomedical EngineeringInternational Cancer Center, Laboratory of Evolutionary Theranostics (LET)School of Biomedical EngineeringShenzhen University Medical SchoolShenzhen UniversityShenzhenChina
| | - Peng Huang
- Marshall Laboratory of Biomedical EngineeringInternational Cancer Center, Laboratory of Evolutionary Theranostics (LET)School of Biomedical EngineeringShenzhen University Medical SchoolShenzhen UniversityShenzhenChina
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18
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Rabin EE, Walter JM, Wunderink RG, Qi C, Pickens CI. Clinical significance of culture-negative, PCR-positive bronchoalveolar lavage results in severe pneumonia. ERJ Open Res 2023; 9:00343-2023. [PMID: 37965226 PMCID: PMC10641578 DOI: 10.1183/23120541.00343-2023] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 08/12/2023] [Indexed: 11/16/2023] Open
Abstract
Some culture-negative, PCR-positive BAL samples may represent true infection. A subset of patients with a culture-negative, PCR-positive BAL result will have a subsequent BAL culture positive for the organism initially identified by PCR alone. https://bit.ly/3DWoFPo.
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Affiliation(s)
- Erik E. Rabin
- Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - James M. Walter
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Richard G. Wunderink
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Chao Qi
- Department of Pathology, Northwestern Memorial Hospital, Chicago, IL, USA
| | - Chiagozie I. Pickens
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
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19
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Qi C, Zhao JH, Wei YR, Gan J, Wan Y, Wu N, Song L, Zhang Y, Liu ZG. [Observation on the efficacy of different targets low-frequency repetitive transcranial magnetic stimulation for the treatment of tremor-dominant subtypes of Parkinson's disease]. Zhonghua Yi Xue Za Zhi 2023; 103:3112-3118. [PMID: 37840182 DOI: 10.3760/cma.j.cn112137-20230629-01102] [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] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
Objective: To analyze the efficacy of different targets low-frequency repetitive transcranial magnetic stimulation (rTMS) for the treatment of tremor Parkinson's disease(PD). Method: A total of 82 patients with primary PD who were admitted to the Department of Neurology, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine from April 1, 2020 to March 31, 2021 were prospectively collected. According to the clinical characteristics of major movement disorders, 82 patients with tremor type (TD) were selected to enroll.The patients were randomly divided into 3 groups at a 1∶1∶1 ratio according to the randomized coding sequence of the trial: the primary motor cortex (M1) group with 26 cases, the cerebellum group with 26 cases and the dual-site (M1, cerebellum) group with 30 cases. All patients were treated with 1 Hz low-frequency stimulation of the corresponding target once a day for 5 days a week for 2 weeks, a total of 10 times; The dosage remained unchanged during the treatment for all groups. Before and after 2 weeks' treatment, the patients were assessed with the Unified PD Rating Scale (UPDRS) and PD Quality of Life Questionnaire-39 (PDQ-39) without medication. Cortical excitability, namely transcranial magnetic stimulation motor evoked potential (TMS-MEP), [including resting motor threshold (rMT) and active motor threshold (aMT) examinations], timed up and go (TUG) and electromyographic tremor were conducted. Result: There were 82 patients, 39 males and 43 females, with an average age of (67±8) years. Before the treatment, there was no statistically significant difference in the evaluation indicators among the three groups (all P>0.05). After the treatment, the differences of the UPDRS-Ⅲ score [(38.9±2.5) vs (29.2±3.6) ], UPDRS tremor score [(23.7±2.1) vs (14.6±3.1) ], TUG time [(44.8±3.1) s vs (33.7±4.1) s], tremor amplitude [(480±126) μV vs (276±94) μV], PDQ-39 score [(51±13) vs (45±13) ], rMT [(36±17)% vs (43±13)%], and aMT [(26±16)% vs (31±12)%] were statistically significant (all P<0.01) from those before the treatment. There was no statistical difference in the above factors between the M1 group and cerebellum group (all P>0.05). There was no statistically significant difference in tremor peak frequency among the three groups before and after the treatment (all P>0.05). Conclusions: Dual-site low-frequency rTMS can improve PD tremor, while M1 or cerebellar low-frequency rTMS does not significantly improve PD tremor. Its mechanism may be to improve PD tremor symptoms by regulating cortical excitability.
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Affiliation(s)
- C Qi
- Department of Neurology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - J H Zhao
- Department of Neurology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Y R Wei
- Department of Neurology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - J Gan
- Department of Neurology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Y Wan
- Department of Neurology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - N Wu
- Department of Neurology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - L Song
- Department of Neurology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Y Zhang
- Department of Neurology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - Z G Liu
- Department of Neurology, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
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20
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Luo L, Li B, Qi C. Spatiotemporal multi-graph convolutional network-based provincial-day-level terrorism risk prediction. Risk Anal 2023. [PMID: 37871999 DOI: 10.1111/risa.14241] [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: 06/25/2021] [Revised: 02/20/2023] [Accepted: 09/26/2023] [Indexed: 10/25/2023]
Abstract
Predicting terrorism risk is crucial for formulating detailed counter-strategies. However, this task is challenging mainly because the risk of the concerned potential victim is not isolated. Terrorism risk has a spatiotemporal interprovincial contagious characteristic. The risk diffusion mechanism comes from three possibilities: cross-provincial terrorist attacks, internal and external echoes, and internal self-excitation. This study proposed a novel spatiotemporal graph convolutional network (STGCN)-based extension method to capture the complex and multidimensional non-Euclidean relationships between different provinces and forecast the daily risks. Specifically, three graph structures were constructed to represent the contagious process between provinces: the distance graph, the province-level root cause similarity graph, and the self-excited graph. The long short-term memory and self-attention layers were extended to STGCN for capturing context-dependent temporal characters. At the same time, the one-dimensional convolutional neural network kernel with the gated linear unit inside the classical STGCN can model single-node-dependent temporal features, and the spectral graph convolution modules can capture spatial features. The experimental results on Afghanistan terrorist attack data from 2005 to 2020 demonstrate the effectiveness of the proposed extended STGCN method compared to other machine learning prediction models. Furthermore, the results illustrate the crucial of capturing comprehensive spatiotemporal correlation characters among provinces. Based on this, this article provides counter-terrorism management insights on addressing the long-term root causes of terrorism risk and performing short-term situational prevention.
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Affiliation(s)
- Lanjun Luo
- School of Management, North Sichuan Medical College, Nanchong, China
| | - Boxiao Li
- School of Management, Huazhong University of Science and Technology, Wuhan, China
| | - Chao Qi
- School of Management, Huazhong University of Science and Technology, Wuhan, China
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21
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Wang Y, Niu X, Qi C, He Z, Zeng B. New Construction of Asynchronous Channel Hopping Sequences in Cognitive Radio Networks. Entropy (Basel) 2023; 25:1473. [PMID: 37895594 PMCID: PMC10606140 DOI: 10.3390/e25101473] [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: 08/15/2023] [Revised: 10/15/2023] [Accepted: 10/20/2023] [Indexed: 10/29/2023]
Abstract
The channel-hopping-based rendezvous is essential to alleviate the problem of under-utilization and scarcity of the spectrum in cognitive radio networks. It dynamically allows unlicensed secondary users to schedule rendezvous channels using the assigned hopping sequence to guarantee the self-organization property in a limited time. In this paper, we use the interleaving technique to cleverly construct a set of asynchronous channel-hopping sequences consisting of d sequences of period xN2 with flexible parameters, which can generate sequences of different lengths. By this advantage, the new designed CHSs can be used to adapt to the demands of various communication scenarios. Furthermore, we focus on the improved maximum-time-to-rendezvous and maximum-first-time-to-rendezvous performance of the new construction compared to the prior research at the same sequence length. The new channel-hopping sequences ensure that rendezvous occurs between any two sequences and the rendezvous times are random and unpredictable when using licensed channels under asynchronous access, although the full degree-of-rendezvous is not satisfied. Our simulation results show that the new construction is more balanced and unpredictable between the maximum-time-to-rendezvous and the mean and variance of time-to-rendezvous.
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Affiliation(s)
- Yaoxuan Wang
- Department of Computer and Software Engineering, Xihua University, Chengdu 610039, China; (Y.W.); (C.Q.); (Z.H.)
| | - Xianhua Niu
- Department of Computer and Software Engineering, Xihua University, Chengdu 610039, China; (Y.W.); (C.Q.); (Z.H.)
| | - Chao Qi
- Department of Computer and Software Engineering, Xihua University, Chengdu 610039, China; (Y.W.); (C.Q.); (Z.H.)
| | - Zhihang He
- Department of Computer and Software Engineering, Xihua University, Chengdu 610039, China; (Y.W.); (C.Q.); (Z.H.)
| | - Bosen Zeng
- Chengdu Institute of Computer Applications, Chinese Academy of Sciences, Chengdu 610041, China;
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22
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Shi Z, Qi C, Chen Q, Fan X, Tian F, Huang D, Tang L, Fang J. Measurement of oesophageal hiatus surface area by multiplanar reconstruction of MDCT: relationship with lower oesophageal sphincter pressure and acid reflux. Clin Radiol 2023; 78:789-794. [PMID: 37500337 DOI: 10.1016/j.crad.2023.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Revised: 05/21/2023] [Accepted: 05/24/2023] [Indexed: 07/29/2023]
Abstract
AIM To evaluate the relationship between oesophageal hiatus surface area (OHSA) and gastro-oesophageal reflux disease (GERD). MATERIALS AND METHODS Patients who underwent 24-h pH monitoring, oesophageal high-resolution manometry, and upper abdominal contrast-enhanced multidetector computed tomography (MDCT) during 2014-2021 were enrolled. Patients with a hiatus hernia (HH) on MDCT or who had a history of gastro-oesophageal surgery were excluded. Multiplanar reconstruction (MPR) of the MDCT image was used for the measurement of OHSA. Correlations of OHSA with acid exposure time (AET) and lower oesophageal sphincter (LOS) pressure of all patients were analysed. RESULTS Seventy-eight patients were included in the study. OHSA was much less in the AET <4% group than in the AET >6% group (1.61 ± 0.42 versus 2.09 ± 0.55 cm2, p<0.001). Correlation analysis reveals that OHSA correlated positively with AET (correlation coefficient = 0.47, p<0.001). Receiver operating characteristic (ROC) curve analysis reveals that OHSA can significantly distinguish patients in different groups divided by AET (area under the ROC curve [AUC] = 0.76, 95% confidence interval [CI]: 0.63-0.90). OHSA was not related to LOS pressure (correlation coefficient = -0.268, p=0.051). There was no difference in OHSA between the low LOS pressure group and the normal LOS pressure group (1.84 ± 0.61 versus 1.74 ± 0.50 cm2, p=0.52). CONCLUSIONS OHSA significantly correlated with AET but has no relationship with LOS pressure. It may be an independent risk factor of GERD.
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Affiliation(s)
- Z Shi
- Department of General Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Rd, Hangzhou, 310016, China
| | - C Qi
- Department of Radiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Rd, Hangzhou, 310016, China
| | - Q Chen
- Department of General Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Rd, Hangzhou, 310016, China
| | - X Fan
- Department of General Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Rd, Hangzhou, 310016, China
| | - F Tian
- Department of Radiology, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Rd, Hangzhou, 310016, China
| | - D Huang
- Department of General Surgery, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Rd, Hangzhou, 310016, China
| | - L Tang
- Department of General Surgery, Shaoxing People's Hospital, 568 Zhongxing North Rd, Shaoxing, 312000, China.
| | - J Fang
- Department of General Medicine, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, 3 East Qingchun Rd, Hangzhou, 310016, China.
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23
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Xie S, Ju S, Zhang X, Qi C, Zhang J, Mao M, Chen C, Chen Y, Ji F, Zhou J, Wang L. A retrospective comparative study on the diagnostic efficacy and the complications: between CassiII rotational core biopsy and core needle biopsy. Front Oncol 2023; 13:1067246. [PMID: 37823052 PMCID: PMC10562690 DOI: 10.3389/fonc.2023.1067246] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 08/03/2023] [Indexed: 10/13/2023] Open
Abstract
Accurate pathologic diagnosis and molecular classification of breast mass biopsy tissue is important for determining individualized therapy for (neo)adjuvant systemic therapies for invasive breast cancer. The CassiII rotational core biopsy system is a novel biopsy technique with a guide needle and a "stick-freeze" technology. The comprehensive assessments including the concordance rates of diagnosis and biomarker status between CassiII and core needle biopsy were evaluated in this study. Estrogen receptor (ER), progesterone receptor (PgR), human epidermal growth factor receptor 2 (HER2), and Ki67 were analyzed through immunohistochemistry. In total, 655 patients with breast cancer who underwent surgery after biopsy at Sir Run Run Shaw Hospital between January 2019 to December 2021 were evaluated. The concordance rates (CRs) of malignant surgical specimens with CassiII needle biopsy was significantly high compared with core needle biopsy. Moreover, CassiII needle biopsy had about 20% improvement in sensitivity and about 5% improvement in positive predictive value compared to Core needle biopsy. The characteristics including age and tumor size were identified the risk factors for pathological inconsistencies with core needle biopsies. However, CassiII needle biopsy was associated with tumor diameter only. The CRs of ER, PgR, HER2, and Ki67 using Cassi needle were 98.08% (kappa, 0.941; p<.001), 90.77% (kappa, 0.812; p<.001), 69.62% (kappa, 0.482; p<.001), and 86.92% (kappa, 0.552; p<.001), respectively. Post-biopsy complications with CassiII needle biopsy were also collected. The complications of CassiII needle biopsy including chest stuffiness, pain and subcutaneous ecchymosis are not rare. The underlying mechanism of subcutaneous congestion or hematoma after CassiII needle biopsy might be the larger needle diameter and the effect of temperature on coagulation function. In summary, CassiII needle biopsy is age-independent and has a better accuracy than CNB for distinguishing carcinoma in situ and invasive carcinoma.
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Affiliation(s)
- Shuduo Xie
- Department of Surgical Oncology, Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, Hangzhou, Zhejiang, China
| | - Siwei Ju
- Department of Surgical Oncology, Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, Hangzhou, Zhejiang, China
| | - Xun Zhang
- Department of Surgical Oncology, Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, Hangzhou, Zhejiang, China
| | - Chao Qi
- Department of Clinical Laboratory, Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Jiahang Zhang
- Department of Surgical Oncology, Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, Hangzhou, Zhejiang, China
| | - Misha Mao
- Department of Surgical Oncology, Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, Hangzhou, Zhejiang, China
| | - Cong Chen
- Department of Breast Surgery, Affiliated Hangzhou First People’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Yongxia Chen
- Department of Surgical Oncology, Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, Hangzhou, Zhejiang, China
| | - Feiyang Ji
- Department of Surgical Oncology, Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, Hangzhou, Zhejiang, China
| | - Jichun Zhou
- Department of Surgical Oncology, Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, Hangzhou, Zhejiang, China
| | - Linbo Wang
- Department of Surgical Oncology, Affiliated Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Key Laboratory of Cancer Prevention and Intervention, Ministry of Education, Hangzhou, Zhejiang, China
- Zhejiang Provincial Clinical Research Center for CANCER, Hangzhou, Zhejiang, China
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Qu D, Hu D, Zhang J, Yang G, Guo J, Zhang D, Qi C, Fu H. Identification and Validation of Ferroptosis-Related Genes in Patients with Acute Spinal Cord Injury. Mol Neurobiol 2023; 60:5411-5425. [PMID: 37316756 DOI: 10.1007/s12035-023-03423-7] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 06/03/2023] [Indexed: 06/16/2023]
Abstract
Ferroptosis plays crucial roles in the pathology of spinal cord injury (SCI). The purpose of this study was to identify differentially expressed ferroptosis-related genes (DE-FRGs) in human acute SCI by bioinformatics analysis and validate the hub DE-FRGs in non-SCI and SCI patients. The GSE151371 dataset was downloaded from the Gene Expression Omnibus and difference analysis was performed. The differentially expressed genes (DEGs) in GSE151371 overlapped with the ferroptosis-related genes (FRGs) obtained from the Ferroptosis Database. A total of 41 DE-FRGs were detected in 38 SCI samples and 10 healthy samples in GSE151371. Then, enrichment analyses of these DE-FRGs were performed for functional annotation. The GO enrichment results showed that upregulated DE-FRGs were mainly associated with reactive oxygen species and redox reactions, and the KEGG enrichment analysis indicated involvement in some diseases and ferroptosis pathways. Protein-protein interaction (PPI) analysis and lncRNA-miRNA-mRNA regulatory network were performed to explore the correlations between genes and regulatory mechanisms. The relationship between DE-FRGs and differentially expressed mitochondria-related genes (DE-MRGs) was also analyzed. Finally, quantitative real-time polymerase chain reaction (qRT-PCR) was used to verify the hub DE-FRGs in clinical blood samples from acute SCI patients and healthy controls. Consistent with the bioinformatics results, qRT-PCR of the clinical samples indicated similar expression levels of TLR4, STAT3, and HMOX1. This study identified DE-FRGs in blood samples from SCI patients, and the results could improve our understanding of the molecular mechanisms of ferroptosis in SCI. These candidate genes and pathways could be therapeutic targets for SCI.
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Affiliation(s)
- Di Qu
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, 16 Jiangsu Road, Qingdao, 266003, China
- Medical Department of Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Die Hu
- Qingdao Eye Hospital of Shandong First Medical University, 5 Yan'er Island Road, Qingdao, 266071, China
| | - Jing Zhang
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, 16 Jiangsu Road, Qingdao, 266003, China
- Medical Department of Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Guodong Yang
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, 16 Jiangsu Road, Qingdao, 266003, China
- Medical Department of Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Jia Guo
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, 16 Jiangsu Road, Qingdao, 266003, China
- Medical Department of Qingdao University, 308 Ningxia Road, Qingdao, 266071, China
| | - Dongfang Zhang
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, 16 Jiangsu Road, Qingdao, 266003, China
| | - Chao Qi
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, 16 Jiangsu Road, Qingdao, 266003, China.
| | - Haitao Fu
- Department of Sports Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, 16 Jiangsu Road, Qingdao, 266003, China.
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25
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Qi C, Lavriha P, Bayraktar E, Vaithia A, Schuster D, Pannella M, Sala V, Picotti P, Bortolozzi M, Korkhov VM. Structures of wild-type and selected CMT1X mutant connexin 32 gap junction channels and hemichannels. Sci Adv 2023; 9:eadh4890. [PMID: 37647412 PMCID: PMC10468125 DOI: 10.1126/sciadv.adh4890] [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] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 07/27/2023] [Indexed: 09/01/2023]
Abstract
In myelinating Schwann cells, connection between myelin layers is mediated by gap junction channels (GJCs) formed by docked connexin 32 (Cx32) hemichannels (HCs). Mutations in Cx32 cause the X-linked Charcot-Marie-Tooth disease (CMT1X), a degenerative neuropathy without a cure. A molecular link between Cx32 dysfunction and CMT1X pathogenesis is still missing. Here, we describe the high-resolution cryo-electron cryo-myography (cryo-EM) structures of the Cx32 GJC and HC, along with two CMT1X-linked mutants, W3S and R22G. While the structures of wild-type and mutant GJCs are virtually identical, the HCs show a major difference: In the W3S and R22G mutant HCs, the amino-terminal gating helix partially occludes the pore, consistent with a diminished HC activity. Our results suggest that HC dysfunction may be involved in the pathogenesis of CMT1X.
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Affiliation(s)
- Chao Qi
- Institute of Molecular Biology and Biophysics, ETH Zurich, Zurich, Switzerland
- Laboratory of Biomolecular Research, Paul Scherrer Institute, Villigen, Switzerland
| | - Pia Lavriha
- Institute of Molecular Biology and Biophysics, ETH Zurich, Zurich, Switzerland
- Laboratory of Biomolecular Research, Paul Scherrer Institute, Villigen, Switzerland
| | - Erva Bayraktar
- Veneto Institute of Molecular Medicine (VIMM), Padua, Italy
- Department of Physics and Astronomy “G. Galilei”, University of Padua, Padua, Italy
| | - Anand Vaithia
- Institute of Molecular Biology and Biophysics, ETH Zurich, Zurich, Switzerland
- Laboratory of Biomolecular Research, Paul Scherrer Institute, Villigen, Switzerland
| | - Dina Schuster
- Institute of Molecular Biology and Biophysics, ETH Zurich, Zurich, Switzerland
- Laboratory of Biomolecular Research, Paul Scherrer Institute, Villigen, Switzerland
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - Micaela Pannella
- Veneto Institute of Molecular Medicine (VIMM), Padua, Italy
- Department of Physics and Astronomy “G. Galilei”, University of Padua, Padua, Italy
| | - Valentina Sala
- Veneto Institute of Molecular Medicine (VIMM), Padua, Italy
| | - Paola Picotti
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - Mario Bortolozzi
- Veneto Institute of Molecular Medicine (VIMM), Padua, Italy
- Department of Physics and Astronomy “G. Galilei”, University of Padua, Padua, Italy
| | - Volodymyr M. Korkhov
- Institute of Molecular Biology and Biophysics, ETH Zurich, Zurich, Switzerland
- Laboratory of Biomolecular Research, Paul Scherrer Institute, Villigen, Switzerland
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Qi C, Acosta Gutierrez S, Lavriha P, Othman A, Lopez-Pigozzi D, Bayraktar E, Schuster D, Picotti P, Zamboni N, Bortolozzi M, Gervasio FL, Korkhov VM. Structure of the connexin-43 gap junction channel in a putative closed state. eLife 2023; 12:RP87616. [PMID: 37535063 PMCID: PMC10400079 DOI: 10.7554/elife.87616] [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] [Indexed: 08/04/2023] Open
Abstract
Gap junction channels (GJCs) mediate intercellular communication by connecting two neighbouring cells and enabling direct exchange of ions and small molecules. Cell coupling via connexin-43 (Cx43) GJCs is important in a wide range of cellular processes in health and disease (Churko and Laird, 2013; Liang et al., 2020; Poelzing and Rosenbaum, 2004), yet the structural basis of Cx43 function and regulation has not been determined until now. Here, we describe the structure of a human Cx43 GJC solved by cryo-EM and single particle analysis at 2.26 Å resolution. The pore region of Cx43 GJC features several lipid-like densities per Cx43 monomer, located close to a putative lateral access site at the monomer boundary. We found a previously undescribed conformation on the cytosolic side of the pore, formed by the N-terminal domain and the transmembrane helix 2 of Cx43 and stabilized by a small molecule. Structures of the Cx43 GJC and hemichannels (HCs) in nanodiscs reveal a similar gate arrangement. The features of the Cx43 GJC and HC cryo-EM maps and the channel properties revealed by molecular dynamics simulations suggest that the captured states of Cx43 are consistent with a closed state.
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Affiliation(s)
- Chao Qi
- Institute of Molecular Biology and Biophysics, ETH Zurich, Zurich, Switzerland
- Laboratory of Biomolecular Research, Paul Scherrer Institute, Villigen, Switzerland
| | - Silvia Acosta Gutierrez
- Institute for the Physics of Living Systems, Institute of Structural and Molecular Biology, University College London, London, United Kingdom
- Institute for Bioengineering of Catalunya (IBEC), The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Pia Lavriha
- Institute of Molecular Biology and Biophysics, ETH Zurich, Zurich, Switzerland
- Laboratory of Biomolecular Research, Paul Scherrer Institute, Villigen, Switzerland
| | - Alaa Othman
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - Diego Lopez-Pigozzi
- Department of Physics and Astronomy "G. Galilei", University of Padova, Padua, Italy
- Veneto Institute of Molecular Medicine (VIMM), Padua, Italy
| | - Erva Bayraktar
- Veneto Institute of Molecular Medicine (VIMM), Padua, Italy
| | - Dina Schuster
- Institute of Molecular Biology and Biophysics, ETH Zurich, Zurich, Switzerland
- Laboratory of Biomolecular Research, Paul Scherrer Institute, Villigen, Switzerland
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - Paola Picotti
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - Nicola Zamboni
- Institute of Molecular Systems Biology, ETH Zurich, Zurich, Switzerland
| | - Mario Bortolozzi
- Department of Physics and Astronomy "G. Galilei", University of Padova, Padua, Italy
- Veneto Institute of Molecular Medicine (VIMM), Padua, Italy
| | - Francesco Luigi Gervasio
- Department of Chemistry, University College London, London, United Kingdom
- School of Pharmaceutical Sciences, University of Geneva, Geneva, Switzerland
- ISPSO, University of Geneva, Geneva, Switzerland
| | - Volodymyr M Korkhov
- Institute of Molecular Biology and Biophysics, ETH Zurich, Zurich, Switzerland
- Laboratory of Biomolecular Research, Paul Scherrer Institute, Villigen, Switzerland
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Sun M, Li Y, Zhang W, Gu X, Wen R, Zhang K, Mao J, Huang C, Zhang X, Nie M, Zhang Z, Qi C, Cai K, Liu G. Allomelanin-based biomimetic nanotherapeutics for orthotopic glioblastoma targeted photothermal immunotherapy. Acta Biomater 2023; 166:552-566. [PMID: 37236575 DOI: 10.1016/j.actbio.2023.05.037] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 05/09/2023] [Accepted: 05/19/2023] [Indexed: 05/28/2023]
Abstract
Immune checkpoint blockade (ICB) therapy has shown great potential in the treatment of malignant tumors, but its therapeutic effect on glioblastoma (GBM) is unsatisfactory because of the low immunogenicity and T cell infiltration, as well as the presence of blood-brain barrier (BBB) that blocks most of ICB agents to the GBM tissues. Herein, we developed a biomimetic nanoplatform of AMNP@CLP@CCM for GBM-targeted photothermal therapy (PTT) and ICB synergistic therapy by loading immune checkpoint inhibitor CLP002 into the allomelanin nanoparticles (AMNPs) and followed by coating cancer cell membranes (CCM). The resulting AMNP@CLP@CCM can successfully cross the BBB and deliver CLP002 to GBM tissues due to the homing effect of CCM. As a natural photothermal conversion agent, AMNPs are used for tumor PTT. The increased local temperature by PTT not only enhances BBB penetration but also upregulates the PD-L1 level on GBM cells. Importantly, PTT can effectively stimulate immunogenic cell death to induce tumor-associated antigen exposure and promote T lymphocyte infiltration, which can further amplify the antitumor immune responses of GBM cells to CLP002-mediated ICB therapy, resulting in significant growth inhibition of the orthotopic GBM. Therefore, AMNP@CLP@CCM has great potential for the treatment of orthotopic GBM by PTT and ICB synergistic therapy. STATEMENT OF SIGNIFICANCE: The effect of ICB therapy on GBM is limited by the low immunogenicity and insufficient T-cell infiltration. Here we developed a biomimetic nanoplatform of AMNP@CLP@CCM for GBM-targeted PTT and ICB synergistic therapy. In this nanoplatform, AMNPs are used as both photothermal conversion agents for PTT and nanocarriers for CLP002 delivery. PTT not only enhances BBB penetration but also upregulates the PD-L1 level on GBM cells by increasing local temperature. Additionally, PTT also induces tumor-associated antigen exposure and promotes T lymphocyte infiltration to amplify the antitumor immune responses of GBM cells to CLP002-mediated ICB therapy, resulting in significant growth inhibition of the orthotopic GBM. Thus, this nanoplatform holds great potential for orthotopic GBM treatment.
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Affiliation(s)
- Maoyuan Sun
- Department of Neurosurgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Yan Li
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Wenli Zhang
- Department of Radiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Xiang Gu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Rong Wen
- Department of Neurosurgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Ke Zhang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Jinning Mao
- Health management center, The Second Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Chengyao Huang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China
| | - Xiong Zhang
- Department of Neurology, The Second Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Mao Nie
- Department of Orthopedics, The Second Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Zhiwen Zhang
- School of Pharmacy & Key Laboratory of Smart Drug Delivery (Ministry of Education), Fudan University, Shanghai, 201203, China
| | - Chao Qi
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China.
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing 400044, China.
| | - Guodong Liu
- Department of Neurosurgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China.
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Li X, Qi C, Cheng K, Tan S, Qiao S, Li D. Application of particle image velocimetry on velocity distribution in 5 × 5 rod bundle channel under rolling motion. ANN NUCL ENERGY 2023. [DOI: 10.1016/j.anucene.2023.109755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Zhao F, Xu H, Chen Y, Xiao J, Zhang M, Li Z, Liu J, Qi C. Actinobacillus pleuropneumoniae FliY and YdjN are involved in cysteine/cystine utilization, oxidative resistance, and biofilm formation but are not determinants of virulence. Front Microbiol 2023; 14:1169774. [PMID: 37250053 PMCID: PMC10213525 DOI: 10.3389/fmicb.2023.1169774] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 04/10/2023] [Indexed: 05/31/2023] Open
Abstract
Introduction Actinobacillus pleuropneumoniae (A. pleuropneumoniae) is a member of Actinobacillus in family Pasteurellaceae. It is the causative agent of porcine pleuropneumonia, which has caused huge economic losses to pig industry over the world. Cysteine is a precursor of many important biomolecules and defense compounds in the cell. However, molecular mechanisms of cysteine transport in A. pleuropneumoniae are unclear. Methods In this study, gene-deleted mutants were generated and investigated, to reveal the roles of potential cysteine/cystine transport proteins FliY and YdjN of A. pleuropneumoniae. Results Our results indicated that the growth of A. pleuropneumoniae was not affected after fliY or ydjN single gene deletion, but absence of both FliY and YdjN decreased the growth ability significantly, when cultured in the chemically defined medium (CDM) supplemented with cysteine or cystine as the only sulfur source. A. pleuropneumoniae double deletion mutant ΔfliYΔydjN showed increased sensitivity to oxidative stress. Besides, trans-complementation of YdjN into ΔfliYΔydjN and wild type leads to increased biofilm formation in CDM. However, the virulence of ΔfliYΔydjN was not attenuated in mice or pigs. Discussion These findings suggest that A. pleuropneumoniae FliY and YdjN are involved in the cysteine/cystine acquisition, oxidative tolerance, and biofilm formation, but not contribute to the pathogenicity of A. pleuropneumoniae.
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Qi C, Hasegawa M, Takao M, Sakai M, Sasaki M, Mizutani M, Akagi A, Iwasaki Y, Miyahara H, Yoshida M, Scheres SHW, Goedert M. Identical tau filaments in subacute sclerosing panencephalitis and chronic traumatic encephalopathy. Acta Neuropathol Commun 2023; 11:74. [PMID: 37143123 PMCID: PMC10161654 DOI: 10.1186/s40478-023-01565-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [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: 02/02/2023] [Accepted: 04/10/2023] [Indexed: 05/06/2023] Open
Abstract
Subacute sclerosing panencephalitis (SSPE) occurs in some individuals after measles infection, following a symptom-free period of several years. It resembles chronic traumatic encephalopathy (CTE), which happens after repetitive head impacts or exposure to blast waves, following a symptom-free period. As in CTE, the neurofibrillary changes of SSPE are concentrated in superficial cortical layers. Here we used electron cryo-microscopy (cryo-EM) of tau filaments from two cases of SSPE to show that the tau folds of SSPE and CTE are identical. Two types of filaments were each made of two identical protofilaments with an extra density in the β-helix region. Like in CTE, the vast majority of tau filaments were Type I, with a minority of Type II filaments. These findings suggest that the CTE tau fold can be caused by different environmental insults, which may be linked by inflammatory changes.
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Affiliation(s)
- Chao Qi
- Medical Research Council Laboratory of Molecular Biology, Cambridge, UK
| | - Masato Hasegawa
- Department of Brain and Neuroscience, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
| | - Masaki Takao
- Department of Clinical Laboratory and Internal Medicine, National Center of Neurology and Psychiatry, Tokyo, Japan
- Department of Neurology and Brain Bank, Mihara Memorial Hospital, Isesaki, Japan
| | - Motoko Sakai
- Department of Neurology, National Hospital Organization Suzuka National Hospital, Suzuka, Mie, Japan
| | - Mayasuki Sasaki
- Department of Child Neurology, Center of Neurology and Psychiatry, Tokyo, Japan
| | - Masashi Mizutani
- Department of Clinical Laboratory and Internal Medicine, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Akio Akagi
- Department of Neuropathology, Institute for Medical Science of Aging, Aichi Medical University, Nagakute, Aichi, Japan
| | - Yasushi Iwasaki
- Department of Neuropathology, Institute for Medical Science of Aging, Aichi Medical University, Nagakute, Aichi, Japan
| | - Hiroaki Miyahara
- Department of Neuropathology, Institute for Medical Science of Aging, Aichi Medical University, Nagakute, Aichi, Japan
| | - Mari Yoshida
- Department of Neuropathology, Institute for Medical Science of Aging, Aichi Medical University, Nagakute, Aichi, Japan
| | - Sjors H W Scheres
- Medical Research Council Laboratory of Molecular Biology, Cambridge, UK.
| | - Michel Goedert
- Medical Research Council Laboratory of Molecular Biology, Cambridge, UK.
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Abstract
As an essential micronutrient, manganese (Mn) participates in various physiological processes and plays important roles in host immune system, hematopoiesis, endocrine function, and oxidative stress regulation. Mn-based nanoparticles are considered to be biocompatible and show versatile applications in nanomedicine, in particular utilized in tumor immunotherapy in the following ways: 1) acting as a biocompatible nanocarrier to deliver immunotherapeutic agents for tumor immunotherapy; 2) serving as an adjuvant to regulate tumor immune microenvironment and enhance immunotherapy; 3) activating host's immune system through the cGAS-STING pathway to trigger tumor immunotherapy; 4) real-time monitoring tumor immunotherapy effect by magnetic resonance imaging (MRI) since Mn2+ ions are ideal MRI contrast agent which can significantly enhance the T1 -weighted MRI signal after binding to proteins. This comprehensive review focuses on the most recent progress of Mn-based nanoplatforms in tumor immunotherapy. The characteristics of Mn are first discussed to guide the design of Mn-based multifunctional nanoplatforms. Then the biomedical applications of Mn-based nanoplatforms, including immunotherapy alone, immunotherapy-involved multimodal synergistic therapy, and imaging-guided immunotherapy are discussed in detail. Finally, the challenges and future developments of Mn-based tumor immunotherapy are highlighted.
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Affiliation(s)
- Ke Zhang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Chao Qi
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China
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Qi C, Verheijen BM, Kokubo Y, Shi Y, Tetter S, Murzin AG, Nakahara A, Morimoto S, Vermulst M, Sasaki R, Aronica E, Hirokawa Y, Oyanagi K, Kakita A, Ryskeldi-Falcon B, Yoshida M, Hasegawa M, Scheres SH, Goedert M. Tau Filaments from Amyotrophic Lateral Sclerosis/Parkinsonism-Dementia Complex (ALS/PDC) adopt the CTE Fold. bioRxiv 2023:2023.04.26.538417. [PMID: 37162924 PMCID: PMC10168338 DOI: 10.1101/2023.04.26.538417] [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] [Indexed: 05/11/2023]
Abstract
The amyotrophic lateral sclerosis/parkinsonism-dementia complex (ALS/PDC) of the island of Guam and the Kii peninsula of Japan is a fatal neurodegenerative disease of unknown cause that is characterised by the presence of abundant filamentous tau inclusions in brains and spinal cords. Here we used electron cryo-microscopy (cryo-EM) to determine the structures of tau filaments from the cerebral cortex of three cases of ALS/PDC from Guam and eight cases from Kii, as well as from the spinal cord of two of the Guam cases. Tau filaments had the chronic traumatic encephalopathy (CTE) fold, with variable amounts of Type I and Type II filaments. Paired helical tau filaments were also found in two Kii cases. We also identified a novel Type III CTE tau filament, where protofilaments pack against each other in an anti-parallel fashion. ALS/PDC is the third known tauopathy with CTE-type filaments and abundant tau inclusions in cortical layers II/III, the others being CTE and subacute sclerosing panencephalitis. Because these tauopathies are believed to have environmental causes, our findings support the hypothesis that ALS/PDC is caused by exogenous factors.
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Affiliation(s)
- Chao Qi
- MRC Laboratory of Molecular Biology, Cambridge, UK
| | - Bert M. Verheijen
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, USA
| | - Yasumasa Kokubo
- Graduate School of Regional Innovation Studies, Mie University, Tsu, Japan
| | - Yang Shi
- MRC Laboratory of Molecular Biology, Cambridge, UK
- Current address: MOE Frontier Science Center for Brain Science and Brain-machine Integration, School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou, China
| | | | | | - Asa Nakahara
- Department of Pathology, Brain Research Institute, Niigata University, Niigata, Japan
| | - Satoru Morimoto
- Department of Oncologic Pathology, Graduate School of Medicine, Mie University, Tsu, Japan
| | - Marc Vermulst
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, USA
| | - Ryogen Sasaki
- Department of Nursing, Suzuka University of Medical Science, Suzuka, Japan
| | - Eleonora Aronica
- Department of Neuropathology, University of Amsterdam, Amsterdam, The Netherlands
| | - Yoshifumi Hirokawa
- Department of Oncologic Pathology, Graduate School of Medicine, Mie University, Tsu, Japan
| | - Kiyomitsu Oyanagi
- Department of Brain Disease Research, Shinshu University School of Medicine, Matsumoto, Japan
| | - Akiyoshi Kakita
- Department of Pathology, Brain Research Institute, Niigata University, Niigata, Japan
| | | | - Mari Yoshida
- Department of Neuropathology, Institute for Medical Science of Aging, Aichi Medical University, Nagakute, Japan
| | - Masato Hasegawa
- Department of Brain and Neuroscience, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan
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Guo J, Qi C, Zhang D, Yang G, Wang C, Yang P, Wang B. Safe femoral tunnel drilling angles avoid injury to the medial and posteromedial femoral anatomic structures during single-bundle posterior cruciate ligament reconstruction with the inside-out technique. Knee Surg Sports Traumatol Arthrosc 2023:10.1007/s00167-023-07412-0. [PMID: 37039872 DOI: 10.1007/s00167-023-07412-0] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 04/03/2023] [Indexed: 04/12/2023]
Abstract
PURPOSE To investigate the relationship between the medial and posteromedial femoral anatomic structures and the femoral tunnel exit produced by different tunnel orientations when creating the femoral tunnel for posterior cruciate ligament reconstruction (PCLR) using the inside-out (IO) technique and to estimate safe tunnel orientations to minimize the risk of iatrogenic injury to these structures. METHODS Eleven cadaveric knees were used. The medial and posteromedial aspects of each knee joint were dissected to reveal the "safe zone," which is a bony area that avoids the distribution or attachment of at-risk structures (MCL, PMC structures, and articular cartilage), while remaining 10 mm away from the articular cartilage. The hypothesis of this study was that by creating the femoral tunnel at specific angles using the IO technique, the tunnel outlet would be as close to the safe zone as possible, protecting the at-risk structures from damage. Femoral tunnels were drilled at 20 different angle combinations on each specimen: 0°, 15°, 30°, 45°, and 60° relative to a line parallel to the transepicondylar axis in the axial plane, as well as 15°, 30°, 45°, and 60° relative to a line parallel to the femoral axis in the coronal plane. The positional relationship between each tunnel exit and the safe zone was recorded, and the shortest distance between the exit center and the safe zone boundary was measured. RESULTS The risk of iatrogenic injury differed depending on the drilling orientation (χ2 = 168.880, P < 0.001). Femoral drilling angle combinations of 45/45°, 45/60°, 60/30°, 60/45°, and 60/60° (axial/coronal) were considered relatively safer than other orientations (P < 0.05). The shortest distance between the tunnel exit and the safe zone boundary was negatively correlated with the angle in the axial plane (P < 0.001, r = - 0.810). CONCLUSIONS When creating the IO femoral tunnel for single-bundle PCL reconstruction, angle combinations of 45/45°, 45/60°, 60/30°, 60/45°, and 60/60° (axial/oblique coronal) could be utilized to prevent at-risk structures from being damaged. The drilling angles and the safe zone can be employed to optimize the femoral tunnel in PCLR.
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Affiliation(s)
- Jia Guo
- Department of Sports Medicine, the Affiliated Hospital of Qingdao University, Qingdao, 266000, Shandong, China
| | - Chao Qi
- Department of Sports Medicine, the Affiliated Hospital of Qingdao University, Qingdao, 266000, Shandong, China.
| | - Dongfang Zhang
- Department of Sports Medicine, the Affiliated Hospital of Qingdao University, Qingdao, 266000, Shandong, China
| | - Guodong Yang
- Department of Sports Medicine, the Affiliated Hospital of Qingdao University, Qingdao, 266000, Shandong, China
| | - Chen Wang
- Department of Sports Medicine, the Affiliated Hospital of Qingdao University, Qingdao, 266000, Shandong, China
| | - Pu Yang
- Department of Sports Medicine, the Affiliated Hospital of Qingdao University, Qingdao, 266000, Shandong, China
| | - Bin Wang
- Department of Sports Medicine, the Affiliated Hospital of Qingdao University, Qingdao, 266000, Shandong, China
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Fu LH, Wu XY, He J, Qi C, Lin J, Huang P. Biomimetic Nanoplatform with H 2O 2 Homeostasis Disruption and Oxidative Stress Amplification for Enhanced Chemodynamic Therapy. Acta Biomater 2023; 162:44-56. [PMID: 36934891 DOI: 10.1016/j.actbio.2023.03.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/04/2023] [Accepted: 03/12/2023] [Indexed: 03/19/2023]
Abstract
Chemodynamic therapy (CDT) is a powerful cancer treatment strategy by producing excessive amount of reactive oxygen species (ROS) to kill cancer cells. However, the inadequate hydrogen peroxide (H2O2) supply and antioxidant defense systems in tumor tissue significantly impair the therapeutic effect of CDT, hindering its further applications. Herein, we present an intelligent nanoplatform with H2O2 homeostasis disruption and oxidative stress amplification properties for enhanced CDT. This nanoplatform is obtained by encapsulating glucose oxidase (GOx) in a pH- and glutathione (GSH)-responsive degradable copper doped-zeolitic imidazolate framework (Cu-ZIF8), followed by loading of 3-amino-1,2,4-triazole (3AT) and modification of hyaluronic acid (HA) for tumor targeting delivery. The GOx@Cu-ZIF8-3AT@HA not only reduces energy supply and increases H2O2 level by exhausting intratumoral glucose, but also disturbs tumor antioxidant defense systems by inhibiting the activity of catalase and depleting intracellular GSH, resulting in disrupted H2O2 homeostasis in tumor. Moreover, the elevated H2O2 will transform into highly toxic •OH by Cu+ that generated from redox reaction between Cu2+ and GSH, amplifying the oxidative stress to enhance the CDT efficacy. Consequently, GOx@Cu-ZIF8-3AT@HA has significantly inhibited the 4T1 xenograft tumor growth without discernible side effects, which provides a promising strategy for cancer management. STATEMENT OF SIGNIFICANCE: The inadequate hydrogen peroxide (H2O2) level and antioxidant defense system in tumor tissues significantly impair the therapeutic effect of chemodynamic therapy (CDT). Herein, we developed an intelligent nanoplatform with H2O2 homeostasis disruption and oxidative stress amplification properties for enhanced CDT. In this nanoplatform, glucose oxidase (GOx) could exhaust intratumoral glucose to reduce energy supply accompanied with production of H2O2, while the suppression of catalase activity by 3-amino-1,2,4-triazole (3AT) and depletion of glutathione by Cu2+ would weaken the antioxidant defense system of tumors. Ultimately, the raised H2O2 level would convert to highly toxic hydroxyl radical (•OH) by Fenton-like reaction, amplifying the CDT efficacy. This work provides a promising strategy for cancer management.
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Affiliation(s)
- Lian-Hua Fu
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University, Shenzhen 518060, China
| | - Xin-Yue Wu
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University, Shenzhen 518060, China
| | - Jin He
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University, Shenzhen 518060, China
| | - Chao Qi
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University, Shenzhen 518060, China
| | - Jing Lin
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University, Shenzhen 518060, China
| | - Peng Huang
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University, Shenzhen 518060, China.
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Nguyen MH, Ye HF, Xu Y, Truong L, Horsey A, Zhao P, Styduhar ED, Frascella M, Leffet L, Federowicz K, Behshad E, Wang A, Zhang K, Witten MR, Qi C, Jalluri R, Lai CT, Atasoylu O, Harris JJ, Hess R, Lin L, Zhang G, Covington M, Diamond S, Yao W, Vechorkin O. Discovery of Orally Bioavailable FGFR2/FGFR3 Dual Inhibitors via Structure-Guided Scaffold Repurposing Approach. ACS Med Chem Lett 2023; 14:312-318. [PMID: 36923909 PMCID: PMC10009791 DOI: 10.1021/acsmedchemlett.3c00003] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 02/27/2023] [Indexed: 03/04/2023] Open
Abstract
Fibroblast growth factor receptors (FGFRs) are transmembrane receptor tyrosine kinases that regulate multiple physiological processes. Aberrant activation of FGFR2 and FGFR3 has been linked to the pathogenesis of many tumor types, including cholangiocarcinoma and bladder cancer. Current therapies targeting the FGFR2/3 pathway exploiting small-molecule kinase inhibitors are associated with adverse events due to undesirable inhibition of FGFR1 and FGFR4. Isoform-specific FGFR2 and FGFR3 inhibitors that spare FGFR1 and FGFR4 could offer a favorable toxicity profile and improved therapeutic window to current treatments. Herein we disclose the discovery of dual FGFR2/FGFR3 inhibitors exploiting scaffold repurposing of a previously reported ALK2 tool compound. Structure-based drug design and structure-activity relationship studies were employed to identify selective and orally bioavailable inhibitors with equipotent activity toward wild-type kinases and a clinically observed gatekeeper mutant.
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Affiliation(s)
- Minh H. Nguyen
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Hai-Fen Ye
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Yao Xu
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Lisa Truong
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - April Horsey
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Peng Zhao
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Evan D. Styduhar
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Michelle Frascella
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Lynn Leffet
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Kelly Federowicz
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Elham Behshad
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Anlai Wang
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Ke Zhang
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Michael R. Witten
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Chao Qi
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Ravi Jalluri
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Cheng-Tsung Lai
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Onur Atasoylu
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Jennifer J. Harris
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Rodrigo Hess
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Luping Lin
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Guofeng Zhang
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Maryanne Covington
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Sharon Diamond
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Wenqing Yao
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
| | - Oleg Vechorkin
- Incyte Research Institute, Incyte Corporation, 1801 Augustine Cut-Off, Wilmington, Delaware 19803, United
States
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Qi C, Xu L, Deng Y, Wang G, Wang Z, Wang L. Retraction: Sericin hydrogels promote skin wound healing with effective regeneration of hair follicles and sebaceous glands after complete loss of epidermis and dermis. Biomater Sci 2023; 11:1077-1078. [PMID: 36629153 DOI: 10.1039/d3bm90005c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Retraction of 'Sericin hydrogels promote skin wound healing with effective regeneration of hair follicles and sebaceous glands after complete loss of epidermis and dermis' by Chao Qi et al., Biomater. Sci., 2018, 6, 2859-2870, https://doi.org/10.1039/C8BM00934A.
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Affiliation(s)
- Chao Qi
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Luming Xu
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Yan Deng
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Guobin Wang
- Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Zheng Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. .,Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
| | - Lin Wang
- Research Center for Tissue Engineering and Regenerative Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China. .,Department of Clinical Laboratory, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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37
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Wang X, Wang Y, Qi C, Qiao S, Yang S, Wang R, Jin H, Zhang J. The Application of Morphogo in the Detection of Megakaryocytes from Bone Marrow Digital Images with Convolutional Neural Networks. Technol Cancer Res Treat 2023; 22:15330338221150069. [PMID: 36700246 PMCID: PMC9896096 DOI: 10.1177/15330338221150069] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
The evaluation of megakaryocytes is an important part of the work up on bone marrow smear examination. It has significance in the differential diagnosis, therapeutic efficacy assessment, and predication of prognosis of many hematologic diseases. The process of manual identification of megakaryocytes are tedious and lack of reproducibility; therefore, a reliable method of automated megakaryocytic identification is urgently needed. Three hundred and thirty-three bone marrow aspirate smears were digitized by Morphogo system. Pathologists annotated megakaryocytes on the digital images of marrow smears are applied to construct a large dataset for testing the system's predictive performance. Subsequently, we obtained megakaryocyte count and classification for each sample by different methods (system-automated analysis, system-assisted analysis, and microscopic examination) to study the correlation between different counting and classification methods. Morphogo system localized cells likely to be megakaryocytes on digital smears, which were later annotated by pathologists and the system, respectively. The system showed outstanding performance in identifying megakaryocytes in bone marrow smears with high sensitivity (96.57%) and specificity (89.71%). The overall correlation between the different methods was confirmed the high consistency (r ≥ 0.7218, R2 ≥ 0.5211) with microscopic examination in classifying megakaryocytes. Morphogo system was proved as a reliable screen tool for analyzing megakaryocytes. The application of Morphogo system shows promises to advance the automation and standardization of bone marrow smear examination.
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Affiliation(s)
- Xiaofen Wang
- Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine,
Zhejiang University, Hangzhou, Zhejiang, China,Key Laboratory of Precision Medicine in Diagnosis and Monitoring
Research of Zhejiang Province, China
| | - Ying Wang
- Department of Medical Development, Hangzhou Zhiwei
Information&Technology Ltd., Hangzhou, China
| | - Chao Qi
- Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine,
Zhejiang University, Hangzhou, Zhejiang, China,Key Laboratory of Precision Medicine in Diagnosis and Monitoring
Research of Zhejiang Province, China
| | - Sai Qiao
- Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine,
Zhejiang University, Hangzhou, Zhejiang, China,Key Laboratory of Precision Medicine in Diagnosis and Monitoring
Research of Zhejiang Province, China
| | - Suwen Yang
- Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine,
Zhejiang University, Hangzhou, Zhejiang, China,Key Laboratory of Precision Medicine in Diagnosis and Monitoring
Research of Zhejiang Province, China
| | - Rongrong Wang
- Department of Clinical Pharmacy, the First Affiliated Hospital,
Zhejiang University, Hangzhou, Zhejiang, China
| | - Hong Jin
- Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine,
Zhejiang University, Hangzhou, Zhejiang, China,Key Laboratory of Precision Medicine in Diagnosis and Monitoring
Research of Zhejiang Province, China
| | - Jun Zhang
- Clinical Laboratory, Sir Run Run Shaw Hospital, School of Medicine,
Zhejiang University, Hangzhou, Zhejiang, China,Key Laboratory of Precision Medicine in Diagnosis and Monitoring
Research of Zhejiang Province, China,Jun Zhang, Clinical Laboratory, Sir Run Run
Shaw Hospital, School of Medicine, Zhejiang University, No.3, Qingchun East
Road, Shangcheng District, Hangzhou, Zhejiang 310016, China.
Hong Jin, Clinical Laboratory, Sir
Run Run Shaw Hospital, School of Medicine, Zhejiang University, No.3, Qingchun
East Road, Shangcheng District, Hangzhou, Zhejiang 310016, China.
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Rhodes NJ, Rohani R, Yarnold PR, Pawlowski AE, Malczynski M, Qi C, Sutton SH, Zembower TR, Wunderink RG. Machine Learning To Stratify Methicillin-Resistant Staphylococcus aureus Risk among Hospitalized Patients with Community-Acquired Pneumonia. Antimicrob Agents Chemother 2023; 67:e0102322. [PMID: 36472425 PMCID: PMC9872682 DOI: 10.1128/aac.01023-22] [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: 07/27/2022] [Accepted: 11/09/2022] [Indexed: 12/12/2022] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is an uncommon but serious cause of community-acquired pneumonia (CAP). A lack of validated MRSA CAP risk factors can result in overuse of empirical broad-spectrum antibiotics. We sought to develop robust models predicting the risk of MRSA CAP using machine learning using a population-based sample of hospitalized patients with CAP admitted to either a tertiary academic center or a community teaching hospital. Data were evaluated using a machine learning approach. Cases were CAP patients with MRSA isolated from blood or respiratory cultures within 72 h of admission; controls did not have MRSA CAP. The Classification Tree Analysis algorithm was used for model development. Model predictions were evaluated in sensitivity analyses. A total of 21 of 1,823 patients (1.2%) developed MRSA within 72 h of admission. MRSA risk was higher among patients admitted to the intensive care unit (ICU) in the first 24 h who required mechanical ventilation than among ICU patients who did not require ventilatory support (odds ratio [OR], 8.3; 95% confidence interval [CI], 2.4 to 32). MRSA risk was lower among patients admitted to ward units than among those admitted to the ICU (OR, 0.21; 95% CI, 0.07 to 0.56) and lower among ICU patients without a history of antibiotic use in the last 90 days than among ICU patients with antibiotic use in the last 90 days (OR, 0.03; 95% CI, 0.002 to 0.59). The final machine learning model was highly accurate (receiver operating characteristic [ROC] area = 0.775) in training and jackknife validity analyses. We identified a relatively simple machine learning model that predicted MRSA risk in hospitalized patients with CAP within 72 h postadmission.
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Affiliation(s)
- Nathaniel J. Rhodes
- Department of Pharmacy Practice, Midwestern University, Chicago College of Pharmacy, Downers Grove, Illinois, USA
- Pharmacometrics Center of Excellence, Midwestern University, Downers Grove, Illinois, USA
- Department of Pharmacy, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Roxane Rohani
- Department of Pharmacy Practice, Midwestern University, Chicago College of Pharmacy, Downers Grove, Illinois, USA
- Pharmacometrics Center of Excellence, Midwestern University, Downers Grove, Illinois, USA
- Department of Pharmacy, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | | | - Anna E. Pawlowski
- Clinical Translational Sciences Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Michael Malczynski
- Department of Microbiology, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Chao Qi
- Department of Pathology, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Sarah H. Sutton
- Division of Infectious Diseases, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- Healthcare Epidemiology and Infection Prevention, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Teresa R. Zembower
- Department of Pathology, Northwestern Memorial Hospital, Chicago, Illinois, USA
- Division of Infectious Diseases, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- Healthcare Epidemiology and Infection Prevention, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Richard G. Wunderink
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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Di L, Cheng S, Zhu Y, Jin Y, Qi C, Zhang L, Zhang M, Wang X, Han Y, Li XL, Min JZ. Development of a diphenyl sulfide structure derivatization reagent for amino acid enantiomers analysis: Application of dynamic monitoring in human urine after drinking wine. J Chromatogr A 2023; 1688:463698. [PMID: 36528900 DOI: 10.1016/j.chroma.2022.463698] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 11/30/2022] [Accepted: 12/01/2022] [Indexed: 12/13/2022]
Abstract
We developed a novel chiral mass spectrometry derivatization reagent (S)-(3-(4-carboxythiazolidin-3-yl)-3-oxopropyl) diphenylsulfonium (CTOD) with a positively charged sulfur-containing structure for high-sensitivity detection of the chiral resolution of amino acid enantiomers. CTOD reacted with DL-amino acids at 60oC for 60 min to generate the corresponding diastereomers, fifteen chiral amino acid-derived products were separated. Resolution (Rs) values were of the range 1.54-4.36, except Asn 1.07, achieving good separation. A highly sensitive and selective UHPLC-MS/MS method for the simultaneous determination and chiral separation of five chiral amino acids (Pro, Ala, Glu, Asp, and Phe) based on CTOD derivatization was established and applied to the detection of chiral amino acids in different wines. The diastereomeric resolution of the five amino acids was 1.71-5.42, and an excellent linear relationship was obtained in the range of 0.25-500 pmol (R2 ≥0.9993). The detection limit was 0.05-0.25 pmol. The intra- and inter-day precisions were 0.51-5.76% and 0.78-5.18%, respectively, and the average recovery was 90.03-99.99%. In addition, the metabolic concentration of chiral amino acids was monitored after drinking red wine and white wine, and the fitting curve of metabolic concentration was drawn.
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Affiliation(s)
- Lei Di
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy Yanbian University, Yanji, Jilin 133002, China
| | - Shengyu Cheng
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy Yanbian University, Yanji, Jilin 133002, China
| | - Yan Zhu
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy Yanbian University, Yanji, Jilin 133002, China
| | - Yueying Jin
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy Yanbian University, Yanji, Jilin 133002, China
| | - Chao Qi
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy Yanbian University, Yanji, Jilin 133002, China
| | - Lingli Zhang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy Yanbian University, Yanji, Jilin 133002, China
| | - Minghui Zhang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy Yanbian University, Yanji, Jilin 133002, China
| | - Xin Wang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy Yanbian University, Yanji, Jilin 133002, China
| | - Yu Han
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy Yanbian University, Yanji, Jilin 133002, China.
| | - Xi-Ling Li
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy Yanbian University, Yanji, Jilin 133002, China.
| | - Jun Zhe Min
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy Yanbian University, Yanji, Jilin 133002, China.
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Kling K, Rios J, Dirnberger L, Polanco W, Fritz K, Malczynski M, Zembower T, Qi C. Development of a workflow for the detection of vancomycin-resistant Enterococcus faecium and Enterococcus faecalis from rectal swabs using the spectra VRE medium. Ann Clin Microbiol Antimicrob 2023; 22:2. [PMID: 36609280 PMCID: PMC9817359 DOI: 10.1186/s12941-023-00552-8] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 01/03/2023] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Spectra™ VRE agar (Remel, Lenexa, KS) is a chromogenic agar that is FDA approved for screening patients for VRE colonization. The package insert recommends confirming isolates with identification and susceptibility testing, but confirming every culture delays time to result. Given the agar's historic high specificity for E. faecium isolates, we theorized the agar could be utilized as a stand-alone screening to minimize reagents and time. AIM Our laboratory sought to develop a workflow to optimize the use of the medium. METHODS We plated 3,815 rectal swabs to the Spectra VRE agar and compared results to traditional identification and susceptibility testing. RESULTS Dark blue or purple colonies on the agar demonstrated a sensitivity of 98% and specificity of 85% for detection of VRE faecium, but light blue colonies were significantly less specific for E. faecalis. CONCLUSIONS We streamlined our workflow to accept dark blue or purple colonies as VRE faecium and plan to perform additional testing only on light blue colonies. Interestingly, higher quantity of growth increased the accuracy of the agar. In the future, growth quantity may be used to further streamline the workflow once more data is obtained.
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Affiliation(s)
- Kendall Kling
- grid.16753.360000 0001 2299 3507Clinical Microbiology Laboratory, Department of Pathology, Northwestern University Feinberg School of Medicine, 710 N Fairbanks Ct, Chicago, IL 60611 USA
| | - Javier Rios
- grid.16753.360000 0001 2299 3507Clinical Microbiology Laboratory, Department of Pathology, Northwestern University Feinberg School of Medicine, 710 N Fairbanks Ct, Chicago, IL 60611 USA
| | - Laura Dirnberger
- grid.16753.360000 0001 2299 3507Clinical Microbiology Laboratory, Department of Pathology, Northwestern University Feinberg School of Medicine, 710 N Fairbanks Ct, Chicago, IL 60611 USA
| | - Wanda Polanco
- grid.16753.360000 0001 2299 3507Clinical Microbiology Laboratory, Department of Pathology, Northwestern University Feinberg School of Medicine, 710 N Fairbanks Ct, Chicago, IL 60611 USA
| | - Kevin Fritz
- grid.16753.360000 0001 2299 3507Clinical Microbiology Laboratory, Department of Pathology, Northwestern University Feinberg School of Medicine, 710 N Fairbanks Ct, Chicago, IL 60611 USA
| | - Michael Malczynski
- grid.16753.360000 0001 2299 3507Clinical Microbiology Laboratory, Department of Pathology, Northwestern University Feinberg School of Medicine, 710 N Fairbanks Ct, Chicago, IL 60611 USA
| | - Teresa Zembower
- grid.16753.360000 0001 2299 3507Clinical Microbiology Laboratory, Department of Pathology, Northwestern University Feinberg School of Medicine, 710 N Fairbanks Ct, Chicago, IL 60611 USA ,grid.16753.360000 0001 2299 3507Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, 676 N. St. Clair Street Suite 940, Chicago, IL 60611 USA
| | - Chao Qi
- grid.16753.360000 0001 2299 3507Clinical Microbiology Laboratory, Department of Pathology, Northwestern University Feinberg School of Medicine, 710 N Fairbanks Ct, Chicago, IL 60611 USA
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Qi C, Jin Y, Cheng S, Di L, Wang X, Zhang M, Zhang L, Li XL, Han Y, Ma Q, Min JZ. A novel UHPLC-MS/MS method for the determination of four α-dicarbonyl compounds in wine and dynamic monitoring in human urine after drinking. Food Res Int 2023; 163:112170. [PMID: 36596116 DOI: 10.1016/j.foodres.2022.112170] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 11/12/2022] [Accepted: 11/15/2022] [Indexed: 11/29/2022]
Abstract
α-dicarbonyl compounds (α-DCs) serve as potential biomarkers for oxidative stress-related diseases but are difficult to detect.To study the metabolism of carbonyl compounds, we developed a new mass spectrometry probe, 3-benzyl-2-oxo-4λ3-thiazolidine-4-carbohydrazide (BOTC), containing hydrazyl groups for the targeted detection of carbonyl functional groups.In a novel approach, we used BOTC pre-column derivatization with ultrahigh performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) to simultaneously detect four kinds of α-DCs in red wine as well as in urine after drinking. The α-DCs were completely separated (R2 ≥ 0.9995), detection was sensitive (detection limit was 12.5-50 fmol), consistent (intraday and interday precision was 0.1-5.7 %), and efficient (average recoveries were 103.3-110.2 %). The method was applied to the analysis of α-DCs in different wines and the dynamic monitoring of transit and excretion in vivo after drinking. Our novel method provides a new strategy for the detection of α-dicarbonyl compounds in red wine and dicarbonyl compounds produced in oxidative stress-related diseases.
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Affiliation(s)
- Chao Qi
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Yueying Jin
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Shengyu Cheng
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Lei Di
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Xin Wang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Minghui Zhang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Lingli Zhang
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Xi-Ling Li
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China
| | - Yu Han
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China.
| | - Qingkun Ma
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China.
| | - Jun Zhe Min
- Key Laboratory of Natural Medicines of the Changbai Mountain, Ministry of Education, Department of Pharmaceutical Analysis, College of Pharmacy, Yanbian University, Yanji 133002, Jilin Province, China.
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Zhang J, Qi C, Mecha P, Zuo Y, Ben Z, Liu H, Chen K. Pseudo high-frequency boosts the generalization of a convolutional neural network for cassava disease detection. Plant Methods 2022; 18:136. [PMID: 36517873 PMCID: PMC9749340 DOI: 10.1186/s13007-022-00969-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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 12/04/2022] [Indexed: 06/17/2023]
Abstract
Frequency is essential in signal transmission, especially in convolutional neural networks. It is vital to maintain the signal frequency in the neural network to maintain the performance of a convolutional neural network. Due to destructive signal transmission in convolutional neural network, signal frequency downconversion in channels results into incomplete spatial information. In communication theory, the number of Fourier series coefficients determines the integrity of the information transmitted in channels. Consequently, the number of Fourier series coefficients of the signals can be replenished to reduce the information transmission loss. To achieve this, the ArsenicNetPlus neural network was proposed for signal transmission modulation in detecting cassava diseases. First, multiattention was used to maintain the long-term dependency of the features of cassava diseases. Afterward, depthwise convolution was implemented to remove aliasing signals and downconvert before the sampling operation. Instance batch normalization algorithm was utilized to keep features in an appropriate form in the convolutional neural network channels. Finally, the ArsenicPlus block was implemented to generate pseudo high-frequency in the residual structure. The proposed method was tested on the Cassava Datasets and compared with the V2-ResNet-101, EfficientNet-B5, RepVGG-B3g4 and AlexNet. The results showed that the proposed method performed [Formula: see text] in terms of accuracy, 1.2440 in terms of loss, and [Formula: see text] in terms of the F1-score, outperforming the comparison algorithms.
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Affiliation(s)
- Jiayu Zhang
- College of Engineering, Nanjing Agricultural University, Nanjing, China
| | - Chao Qi
- College of Engineering, Nanjing Agricultural University, Nanjing, China
| | - Peter Mecha
- College of Engineering, Nanjing Agricultural University, Nanjing, China
| | - Yi Zuo
- College of Engineering, Nanjing Agricultural University, Nanjing, China
| | - Zongyou Ben
- College of Engineering, Nanjing Agricultural University, Nanjing, China
| | - Haolu Liu
- Nanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing, China
| | - Kunjie Chen
- College of Engineering, Nanjing Agricultural University, Nanjing, China.
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43
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Liu JJ, Xu XX, Sun LJ, Yuan CX, Kaneko K, Sun Y, Liang PF, Wu HY, Shi GZ, Lin CJ, Lee J, Wang SM, Qi C, Li JG, Li HH, Xayavong L, Li ZH, Li PJ, Yang YY, Jian H, Gao YF, Fan R, Zha SX, Dai FC, Zhu HF, Li JH, Chang ZF, Qin SL, Zhang ZZ, Cai BS, Chen RF, Wang JS, Wang DX, Wang K, Duan FF, Lam YH, Ma P, Gao ZH, Hu Q, Bai Z, Ma JB, Wang JG, Wu CG, Luo DW, Jiang Y, Liu Y, Hou DS, Li R, Ma NR, Ma WH, Yu GM, Patel D, Jin SY, Wang YF, Yu YC, Hu LY, Wang X, Zang HL, Wang KL, Ding B, Zhao QQ, Yang L, Wen PW, Yang F, Jia HM, Zhang GL, Pan M, Wang XY, Sun HH, Xu HS, Zhou XH, Zhang YH, Hu ZG, Wang M, Liu ML, Ong HJ, Yang WQ. Observation of a Strongly Isospin-Mixed Doublet in ^{26}Si via β-Delayed Two-Proton Decay of ^{26}P. Phys Rev Lett 2022; 129:242502. [PMID: 36563237 DOI: 10.1103/physrevlett.129.242502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 10/10/2022] [Accepted: 11/03/2022] [Indexed: 06/17/2023]
Abstract
β decay of proton-rich nuclei plays an important role in exploring isospin mixing. The β decay of ^{26}P at the proton drip line is studied using double-sided silicon strip detectors operating in conjunction with high-purity germanium detectors. The T=2 isobaric analog state (IAS) at 13 055 keV and two new high-lying states at 13 380 and 11 912 keV in ^{26}Si are unambiguously identified through β-delayed two-proton emission (β2p). Angular correlations of two protons emitted from ^{26}Si excited states populated by ^{26}P β decay are measured, which suggests that the two protons are emitted mainly sequentially. We report the first observation of a strongly isospin-mixed doublet that deexcites mainly via two-proton decay. The isospin mixing matrix element between the ^{26}Si IAS and the nearby 13 380-keV state is determined to be 130(21) keV, and this result represents the strongest mixing, highest excitation energy, and largest level spacing of a doublet ever observed in β-decay experiments.
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Affiliation(s)
- J J Liu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - X X Xu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Department of Physics, The University of Hong Kong, Hong Kong, China
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - L J Sun
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - C X Yuan
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - K Kaneko
- Department of Physics, Kyushu Sangyo University, Fukuoka 813-8503, Japan
| | - Y Sun
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - P F Liang
- Department of Physics, The University of Hong Kong, Hong Kong, China
| | - H Y Wu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - G Z Shi
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - C J Lin
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- College of Physics and Technology & Guangxi Key Laboratory of Nuclear Physics and Technology, Guangxi Normal University, Guilin 541004, China
| | - J Lee
- Department of Physics, The University of Hong Kong, Hong Kong, China
| | - S M Wang
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China
- Shanghai Research Center for Theoretical Nuclear Physics, NSFC and Fudan University, Shanghai 200438, China
| | - C Qi
- KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden
| | - J G Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - H H Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Latsamy Xayavong
- Department of Physics, Faculty of Natural Sciences, National University of Laos, Vientiane 01080, Laos
| | - Z H Li
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - P J Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Y Y Yang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - H Jian
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Y F Gao
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - R Fan
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S X Zha
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - F C Dai
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - H F Zhu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - J H Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Z F Chang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S L Qin
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Z Z Zhang
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - B S Cai
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - R F Chen
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - J S Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- College of Science, Huzhou University, Huzhou 313000, China
| | - D X Wang
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - K Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - F F Duan
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Y H Lam
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - P Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Z H Gao
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Q Hu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Z Bai
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - J B Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - J G Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - C G Wu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - D W Luo
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - Y Jiang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - Y Liu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - D S Hou
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - R Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - N R Ma
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - W H Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China
| | - G M Yu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin 150001, China
| | - D Patel
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Department of Physics, Sardar Vallabhbhai National Institute of Technology, Surat 395007, India
| | - S Y Jin
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Y F Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Physics and Astronomy, Yunnan University, Kunming 650091, China
| | - Y C Yu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Physics and Astronomy, Yunnan University, Kunming 650091, China
| | - L Y Hu
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin 150001, China
| | - X Wang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - H L Zang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - K L Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - B Ding
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Q Q Zhao
- Department of Physics, The University of Hong Kong, Hong Kong, China
| | - L Yang
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - P W Wen
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - F Yang
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - H M Jia
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - G L Zhang
- School of Physics, Beihang University, Beijing 100191, China
| | - M Pan
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- School of Physics, Beihang University, Beijing 100191, China
| | - X Y Wang
- School of Physics, Beihang University, Beijing 100191, China
| | - H H Sun
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - H S Xu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - X H Zhou
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - Y H Zhang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - Z G Hu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - M Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - M L Liu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - H J Ong
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- RCNP, Osaka University, Osaka 567-0047, Japan
| | - W Q Yang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
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Rathod SN, Bardowski L, Tse I, Churyla A, Fiehler M, Malczynski M, Qi C, Tanna SD, Bulger C, Al-Qamari A, Oakley R, Zembower TR. Vancomycin-resistant Enterococcus outbreak in a pre- and post-cardiothoracic transplant population: Impact of discontinuing multidrug-resistant organism surveillance during the coronavirus disease 2019 pandemic. Transpl Infect Dis 2022; 24:e13972. [PMID: 36169219 DOI: 10.1111/tid.13972] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 08/31/2022] [Accepted: 09/16/2022] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Many institutions suspended surveillance and contact precautions for multidrug-resistant organisms (MDROs) at the outset of the coronavirus disease 2019 (COVID-19) pandemic due to a lack of resources. Once our institution reinstated surveillance in September 2020, a vancomycin-resistant Enterococcus (VRE) faecium outbreak was detected in the cardiothoracic transplant units, a population in which we had not previously detected outbreaks. METHODS An outbreak investigation was conducted using pulsed-field gel electrophoresis for strain typing and electronic medical record review to determine the clinical characteristics of involved patients. The infection prevention (IP) team convened a multidisciplinary process improvement team comprised of IP, cardiothoracic transplant nursing and medical leadership, environmental services, and the microbiology laboratory. RESULTS Between December 2020 and March 2021, the outbreak involved thirteen patients in the cardiothoracic transplant units, four index cases, and nine transmissions. Of the 13, seven (54%) were on the transplant service, including heart and lung transplant recipients, patients with ventricular assist devices, and a patient on extracorporeal membrane oxygenation as a bridge to lung transplantation. Four of 13 (31%) developed a clinical infection. DISCUSSION Cardiothoracic surgery/transplant patients may have a similar risk for VRE-associated morbidity as abdominal solid organ transplant and stem cell transplant patients, highlighting the need for aggressive outbreak management when VRE transmission is detected. Our experience demonstrates an unintended consequence of discontinuing MDRO surveillance in this population and highlights a need for education, monitoring, and reinforcement of foundational infection prevention measures to ensure optimal outcomes.
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Affiliation(s)
- Shardul N Rathod
- Department of Healthcare Epidemiology and Infection Prevention, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Laura Bardowski
- Department of Healthcare Epidemiology and Infection Prevention, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Isabella Tse
- Cardiac, Vascular, and Thoracic Stepdown, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Andrei Churyla
- Division of Cardiac Surgery, Department of Surgery, Bluhm Cardiovascular Institute, Northwestern University Feinberg School of Medicine and Northwestern Medicine, Chicago, Illinois, USA
| | - Monica Fiehler
- Division of Cardiac Surgery, Department of Surgery, Bluhm Cardiovascular Institute, Northwestern University Feinberg School of Medicine and Northwestern Medicine, Chicago, Illinois, USA
| | - Michael Malczynski
- Department of Pathology, Northwestern University Feinberg School of Medicine, Clinical Microbiology Laboratory, Northwestern Memorial Hospital and Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Chao Qi
- Department of Pathology, Northwestern University Feinberg School of Medicine, Clinical Microbiology Laboratory, Northwestern Memorial Hospital and Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Sajal D Tanna
- Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Christine Bulger
- Department of Environmental Services and Patient Escort, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Abbas Al-Qamari
- Division of Cardiac Surgery, Department of Surgery, Bluhm Cardiovascular Institute, Northwestern University Feinberg School of Medicine and Northwestern Medicine, Chicago, Illinois, USA.,Department of Anesthesiology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Robin Oakley
- Cardiac Transplant Intensive Care Unit, Northwestern Memorial Hospital, Chicago, Illinois, USA
| | - Teresa R Zembower
- Department of Healthcare Epidemiology and Infection Prevention, Northwestern Memorial Hospital, Chicago, Illinois, USA.,Department of Pathology, Northwestern University Feinberg School of Medicine, Clinical Microbiology Laboratory, Northwestern Memorial Hospital and Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA.,Department of Medicine, Division of Infectious Diseases, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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Yang H, Gu X, Li Y, Zhang K, Liu X, Huang C, Ren Y, Qi C, Cai K. Multifunctional nanoreactors with nutrient consumption and ROS generation capabilities for antibacterial and skin repair. J Mater Chem B 2022; 10:8664-8671. [PMID: 36217743 DOI: 10.1039/d2tb01436j] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Bacterial wound infection has brought a serious threat to human health and caused huge economic losses. Attempts to develop biomaterials with excellent antibacterial effects are meaningful to promote wound healing. Herein, we report a multifunctional nanoreactor with nutrient consumption and reactive oxygen species (ROS) generation capabilities for antibacterial and skin wound repair. The nanoreactor was constructed by the encapsulation of glucose oxidase (GOx) into a Cu2+-doped zeolite-based imidazole framework (ZIF-8) through a one-pot synthesis method. The nanoreactor not only consumes the nutrients of bacteria by the GOx-driven oxidation reaction, but also generates highly toxic hydroxyl radicals (˙OH) to kill bacteria via a Cu+-mediated Fenton-like reaction. Moreover, Zn2+ released from the nanoreactor is also capable of exhibiting synergistic antibacterial activity. In addition to mediating Fenton-like reactions, Cu2+ promotes angiogenesis to accelerate wound healing. Thus, the multifunctional nanoreactor has the ability to cut off the nutrient supply and starve the bacteria, produce ROS to kill bacteria, and promote angiogenesis to accelerate wound healing, enabling it to be promising for the treatment of wound infection.
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Affiliation(s)
- Han Yang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
| | - Xiang Gu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
| | - Yan Li
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
| | - Ke Zhang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
| | - Xihong Liu
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
| | - Chengyao Huang
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
| | - Yu Ren
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
| | - Chao Qi
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
| | - Kaiyong Cai
- Key Laboratory of Biorheological Science and Technology, Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400044, China.
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47
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Rohani R, Scheetz MH, Donnelly HK, Donayre A, Kang M, Diaz E, Dedicatoria K, Hauser AR, Ozer EA, Nozick S, Qi C, Pawlowski AE, Neely MN, Misharin AV, Wunderink RG, Rhodes NJ. Individual target pharmacokinetic/pharmacodynamic attainment rates among meropenem-treated patients admitted to the ICU with hospital-acquired pneumonia. J Antimicrob Chemother 2022; 77:2956-2959. [PMID: 35869779 PMCID: PMC10205601 DOI: 10.1093/jac/dkac245] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 06/24/2022] [Indexed: 02/03/2023] Open
Abstract
OBJECTIVES Critical illness reduces β-lactam pharmacokinetic/pharmacodynamic (PK/PD) attainment. We sought to quantify PK/PD attainment in patients with hospital-acquired pneumonia. METHODS Meropenem plasma PK data (n = 70 patients) were modelled, PK/PD attainment rates were calculated for empirical and definitive targets, and between-patient variability was quantified [as a coefficient of variation (CV%)]. RESULTS Attainment of 100% T>4×MIC was variable for both empirical (CV% = 92) and directed (CV% = 33%) treatment. CONCLUSIONS Individualization is required to achieve suggested PK/PD targets in critically ill patients.
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Affiliation(s)
- Roxane Rohani
- Midwestern University College of Pharmacy Downers Grove Campus, Downers Grove, IL, USA
- Midwestern University College of Pharmacy Downers Grove Campus, Pharmacometrics Center of Excellence, Downers Grove, IL, USA
- Department of Pharmacy, Northwestern Medicine, Chicago, IL, USA
| | - Marc H Scheetz
- Midwestern University College of Pharmacy Downers Grove Campus, Downers Grove, IL, USA
- Midwestern University College of Pharmacy Downers Grove Campus, Pharmacometrics Center of Excellence, Downers Grove, IL, USA
- Department of Pharmacy, Northwestern Medicine, Chicago, IL, USA
| | - Helen K Donnelly
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Alvaro Donayre
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Mengjia Kang
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Estefani Diaz
- Robert H. Lurie Comprehensive Cancer Research Center, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Kay Dedicatoria
- Midwestern University College of Pharmacy Downers Grove Campus, Downers Grove, IL, USA
| | - Alan R Hauser
- Department of Microbiology-Immunology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
- Division of Infectious Diseases, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Egon A Ozer
- Division of Infectious Diseases, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Sophia Nozick
- Department of Microbiology-Immunology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Chao Qi
- Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Anna E Pawlowski
- Clinical and Translational Sciences Institute, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Michael N Neely
- Laboratory of Applied Pharmacokinetics and Bioinformatics, The Saban Research Institute, Children's Hospital of Los Angeles, Los Angeles, CA, USA
- Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Alexander V Misharin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Richard G Wunderink
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Nathaniel J Rhodes
- Midwestern University College of Pharmacy Downers Grove Campus, Downers Grove, IL, USA
- Midwestern University College of Pharmacy Downers Grove Campus, Pharmacometrics Center of Excellence, Downers Grove, IL, USA
- Department of Pharmacy, Northwestern Medicine, Chicago, IL, USA
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Ji J, Qi C, Zhao H, Yan X, Chai Z, Wang S, Zheng T. Regulating the Porosity of Uranyl Phosphonate Frameworks with Quaternary Ammonium: Structure, Characterization, and Fluorescent Temperature Sensors. Inorg Chem 2022; 61:16794-16804. [PMID: 36214515 DOI: 10.1021/acs.inorgchem.2c02636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Regulating the porosity of metal phosphonate frameworks is still challenging, even though this is not an issue for carboxylate-based metal-organic frameworks (MOFs). Quaternary ammonium cations are common template reagents widely used for structure control. However, it is not successful for uranyl phosphonate frameworks (UPFs) because the large volume sizes of templates make it challenging to enter the channels constructed by phosphonate ligands with small pore sizes and low dimensions. In this work, three new porous three-dimensional UPFs were synthesized using the phosphonate ligand and template reagents with the same geometry, namely, (TEA)2(UO2)3(TppmH4)2·2H2O (UPF-106), (TPA)2(UO2)3(TppmH4)2 (UPF-107), and (TBA)2(UO2)5(TppmH2)2(H2O)2·4H2O (UPF-108). The porosity of the UPFs in this work showed a positive relation with the sizes of the template ammonium cations. Thermogravimetric analysis and infrared and ultraviolet spectroscopy were performed. The variable-temperature fluorescence spectra of the three compounds showed that the fluorescence intensity has an excellent relation to temperature with a potential application as fluorescence temperature sensors.
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Affiliation(s)
- Jinyan Ji
- Yangtze River Delta Research Institute, Northwestern Polytechnical University, Suzhou215400, People's Republic of China.,School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an710072, People's Republic of China.,School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing210094, People's Republic of China
| | - Chao Qi
- Yangtze River Delta Research Institute, Northwestern Polytechnical University, Suzhou215400, People's Republic of China.,School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an710072, People's Republic of China.,School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing210094, People's Republic of China
| | - Hongxia Zhao
- Yangtze River Delta Research Institute, Northwestern Polytechnical University, Suzhou215400, People's Republic of China.,School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an710072, People's Republic of China.,School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing210094, People's Republic of China
| | - Xuewu Yan
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing210094, People's Republic of China
| | - Zhifang Chai
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences, Soochow University, Suzhou215123, People's Republic of China
| | - Shuao Wang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences, Soochow University, Suzhou215123, People's Republic of China
| | - Tao Zheng
- Yangtze River Delta Research Institute, Northwestern Polytechnical University, Suzhou215400, People's Republic of China.,School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an710072, People's Republic of China
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Qi C, Sugita N, Shinshi T. A Disposable Electromagnetic Bi-Directional Micropump Utilizing a Rotating Multi-Pole Ring Magnetic Coupling. Micromachines (Basel) 2022; 13:1565. [PMID: 36295917 PMCID: PMC9608322 DOI: 10.3390/mi13101565] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 09/08/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
Electromagnetic bi-directional micropumps (EMBM) are indispensable for the development of portable devices which enable fluid transportation in forward and reverse directions. However, the high disposal cost of rare-earth magnets attached to the fluidic part and the low pump density due to multiple motors limit their practical application in disposable multi-channel microfluidic applications such as droplet-based oscillatory-flow (DBOF) rapid PCR amplification. Therefore, this paper presented a low-cost, disposable, high-pump-density EMBM. To reduce the disposal cost, we separated the magnets from the disposable fluidic part and used cylindrical holes to store and guide the magnet, which resulted in the ability to reuse all the magnets. To increase the pump density, we used the combination of one motor and one multi-pole ring magnet to drive several channels simultaneously. A proof-of-concept prototype with a pump density of 0.28 cm-2 was fabricated and experimentally evaluated. The fabricated micropump exhibited a maximum flow rate of 0.86 mL/min and a maximum backpressure of 0.5 kPa at a resonant frequency around 50 Hz. The developed multi-channel micropump with reusable magnets is highly beneficial to the development of low-cost and high-throughput rapid PCR amplification microchips and therefore can have a significant impact on timely infectious disease recognition and intervention.
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Affiliation(s)
- Chao Qi
- Department of Mechanical Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Naohiro Sugita
- Laboratory for Future Interdisciplinary Research of Science and Technology (FIRST), Institute of Innovative Research (IIR), Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Tadahiko Shinshi
- Laboratory for Future Interdisciplinary Research of Science and Technology (FIRST), Institute of Innovative Research (IIR), Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
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Qi C, Cao J, Liu X, Chen Q, Liang M, Chen Z, Feng J, Chen B, Ning W, Li L. Follistatin-like 1 mitigates intermittent hypoxia-induced melanoma lung metastasis in mice. Sleep Breath 2022; 27:1165-1173. [DOI: 10.1007/s11325-022-02680-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 05/27/2022] [Accepted: 06/30/2022] [Indexed: 10/14/2022]
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