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Liu A, Kuang J, Zhou Y, Xu A, Tian C, Yu L. EPR-based in situ enzymatic activity detection of endogenous caspase-3 in apoptosis cell lysates. Chem Commun (Camb) 2022; 58:8528-8531. [PMID: 35801530 DOI: 10.1039/d2cc02361j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Caspase-3 plays a vital role in cell apoptosis and related diseases. The detection and characterization of endogenous active caspase-3 are of immense value not only for mechanism studies of apoptosis but also for the diagnosis and treatment of apoptosis-related diseases. Here, an electron paramagnetic resonance (EPR)-based enzymatic assay was developed for the detection of caspase-3 activity both in vitro and in apoptosis cells. This assay uses a sandwich-like probe composed of a caspase-3-specific peptide segment (DEVD) conjugated to an EPR-detectable nitroxide spin label and magnetic beads (MBs). Cleavage of the "Nitroxide-Peptide-MBs" sandwich probe caspase-3 will release the nitroxide, which is readily detected by EPR after magnetic separation, resulting in a distinct EPR "off/on" transition. This assay takes advantage of the specific cleavage of DEVD-containing peptides by caspase-3 for high specificity, magnetic beads for fast magnetic separation, and EPR spectroscopy for considerably high detection sensitivity (LODs for caspase-3 are 116 nM at 60 min and 58 nM at 120 min). Importantly, the assay was proven to be compatible with complex biological samples and can detect the endogenous active caspase-3, thereby providing potential applications in the screening of protease-targeted drugs and the diagnosis of protease-associated diseases.
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Affiliation(s)
- Aokun Liu
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, Anhui, 230031, China.
| | - Jian Kuang
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Center for Bioanalytical Chemistry, Hefei National Laboratory of Physical Science at Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yemian Zhou
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, Anhui, 230031, China.
| | - An Xu
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, Anhui, 230031, China.
| | - Changlin Tian
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, Anhui, 230031, China. .,The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, Center for Bioanalytical Chemistry, Hefei National Laboratory of Physical Science at Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Lu Yu
- High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei, Anhui, 230031, China.
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2
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Zhu K, Zhou L, Wu L, Feng S, Hu H, He J, He Y, Feng Z, Yin Y, Yu D, Cao Z. An
Enzyme‐Free
Amperometric Sensor Based on
Self‐Assembling Ferrocene‐Conjugated
Oligopeptide for Specific Determination of
L
‐Arginine. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100245] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Kai‐Jie Zhu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, and Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Biological Engineering Changsha University of Science and Technology Changsha Hunan 410114 China
| | - Li Zhou
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, and Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Biological Engineering Changsha University of Science and Technology Changsha Hunan 410114 China
| | - Ling Wu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, and Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Biological Engineering Changsha University of Science and Technology Changsha Hunan 410114 China
| | - Sai‐Fei Feng
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, and Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Biological Engineering Changsha University of Science and Technology Changsha Hunan 410114 China
| | - Hui‐Ying Hu
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, and Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Biological Engineering Changsha University of Science and Technology Changsha Hunan 410114 China
| | - Jing‐Lin He
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, and Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Biological Engineering Changsha University of Science and Technology Changsha Hunan 410114 China
| | - Yu‐Min He
- Institute of Subtropical Agriculture Chinese Academy of Sciences Changsha Hunan 410125 China
| | - Ze‐Meng Feng
- Institute of Subtropical Agriculture Chinese Academy of Sciences Changsha Hunan 410125 China
| | - Yu‐Long Yin
- Institute of Subtropical Agriculture Chinese Academy of Sciences Changsha Hunan 410125 China
| | - Donghong Yu
- Department of Chemistry and Bioscience Aalborg University DK‐9220 Aalborg, East Denmark
| | - Zhong Cao
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation, and Hunan Provincial Key Laboratory of Cytochemistry, School of Chemistry and Biological Engineering Changsha University of Science and Technology Changsha Hunan 410114 China
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3
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Wang TS, Tian W, Fang Y, Guo KR, Li AQ, Sun Y, Wu HT, Zheng GQ, Feng NN, Xing CH, Au WW, Sun DY, Xia ZL. Changes in miR-222 expression, DNA repair capacity, and MDM2-p53 axis in association with low-dose benzene genotoxicity and hematotoxicity. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 765:142740. [PMID: 33071125 DOI: 10.1016/j.scitotenv.2020.142740] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 09/27/2020] [Accepted: 09/28/2020] [Indexed: 02/05/2023]
Abstract
Mechanisms for hematotoxicity and health effects from exposure to low doses of benzene (BZ) remain to be identified. To address the information gap, our investigation was focused onto using appropriate populations and cell cultures to investigate novel BZ-induced effects such as disruption of DNA repair capacity (DRC). From our study, abnormal miRNAs were identified and validated using lymphocytes from 56 BZ-poisoned workers and 53 controls. In addition, 173 current BZ-exposed workers and 58 controls were investigated for key miRNA expression using RT-PCR and for cellular DRC using a challenge assay. Subsequently, the observed activities in lymphocytes were verified using human HL-60 (p53 null) and TK6 (p53 wild-type) cells via 1,4-benzoquinone (1,4-BQ) treatment and miR-222 interferences. The targeting of MDM2 by miR-222 was validated using a luciferase reporter. Our results indicate induction of genotoxicity in lymphocytes from workers with low exposure doses to BZ. In addition, miR-222 expression was up-regulated among both BZ-poisoned and BZ-exposed workers together with inverse association with DRC. Our in vitro validation studies using both cell lines indicate that 1,4-BQ exposure increased expression of miR-222 and Comet tail length but decreased DRC. Loss of miR-222 reduced DNA damage, but induced S-phase arrest and apoptosis. However, silencing of MDM2 failed to activate p53 in TK6 cells. In conclusion, our in vivo observations were confirmed by in vitro studies showing that BZ/1,4-BQ exposures caused genotoxicity and high expression of miR-222 which obstructed expression of the MDM2-p53 axis that led to failed activation of p53, abnormal DRC and serious biological consequences.
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Affiliation(s)
- Tong-Shuai Wang
- Department of Occupation Health and Toxicology, School of Public Health, Fudan University, Shanghai 200032, China
| | - Wei Tian
- Department of Occupation Health and Toxicology, School of Public Health, Fudan University, Shanghai 200032, China
| | - Yan Fang
- Department of Occupation Health and Toxicology, School of Public Health, Fudan University, Shanghai 200032, China
| | - Kong-Rong Guo
- Department of Occupational Disease, Shanghai Pulmonary Hospital/Shanghai Hospital for Occupational Disease Prevention and Treatment, Shanghai 200082, China
| | - An-Qi Li
- Department of Occupation Health and Toxicology, School of Public Health, Fudan University, Shanghai 200032, China
| | - Yuan Sun
- Shanghai Institute of Occupational Disease for Chemical Industry (Shanghai Institute of Occupational Safety & Health), Shanghai, 200040, China
| | - Han-Tian Wu
- Department of Occupation Health and Toxicology, School of Public Health, Fudan University, Shanghai 200032, China
| | - Guo-Qiao Zheng
- Department of Occupation Health and Toxicology, School of Public Health, Fudan University, Shanghai 200032, China
| | - Nan-Nan Feng
- School of Public Health, School of Medicine of Shanghai Jiaotong University, Hongqiao International Institute of Medicine, Shanghai Tongren Hospital, Shanghai 200050, China
| | - Cai-Hong Xing
- Key Laboratory of Chemical Safety and Health, National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100032, China
| | - William W Au
- University of Medicine, Pharmacy, Science and Technology, Targu Mures, Romania; Shantou University Medical College, Shantou 515000, China
| | - Dao-Yuan Sun
- Department of Occupational Disease, Shanghai Pulmonary Hospital/Shanghai Hospital for Occupational Disease Prevention and Treatment, Shanghai 200082, China.
| | - Zhao-Lin Xia
- Department of Occupation Health and Toxicology, School of Public Health, Fudan University, Shanghai 200032, China.
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Li F, Du Z, Huang X, Dong C, Ren J. Analyses of p73 Protein Oligomerization and p73-MDM2 Interaction in Single Living Cells Using In Situ Single Molecule Spectroscopy. Anal Chem 2021; 93:886-894. [PMID: 33393764 DOI: 10.1021/acs.analchem.0c03521] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Protein oligomerization and protein-protein interaction are crucial to regulate protein functions and biological processes. p73 protein is a very important transcriptional factor and can promote apoptosis and cell cycle arrest, and its transcriptional activity is regulated by p73 oligomerization and p73-MDM2 interaction. Although extracellular studies on p73 oligomerization and p73-MDM2 interaction have been carried out, it is unclear how p73 oligomerization and p73-MDM2 interaction occur in living cells. In our study, we described an in situ method for studying p73 oligomerization and p73-MDM2 interaction in living cells by combining fluorescence cross-correlation spectroscopy with a fluorescent protein labeling technique. Lentiviral transfection was used to transfect cells with a plasmid for either p73 or MDM2, each fused to a different fluorescent protein. p73 oligomerization was evaluated using brightness per particle, and the p73-MDM2 interaction was quantified using the cross-correlation value. We constructed a series of p73 mutants in three domains (transactivation domain, DNA binding domain, and oligomerization domain) and MDM2 mutants. We systematically studied p73 oligomerization and the effects of p73 oligomerization and the p73 and MDM2 structures on the p73-MDM2 interaction in single living cells. We have found that the p73 protein can form oligomers and that the p73 structure changes in the oligomerization domain significantly influence its oligomerization. p73 oligomerization and the structure changes significantly affect the p73-MDM2 interaction. Furthermore, the effects of inhibitors on p73 oligomerization and p73-MDM2 interaction were studied.
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Affiliation(s)
- Fucai Li
- School of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zhixue Du
- School of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Xiangyi Huang
- School of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Chaoqing Dong
- School of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Jicun Ren
- School of Chemistry & Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
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5
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Hu S, Su D, Sun L, Wang Z, Guan L, Liu S, Zhao B, Liu Y, Shi C, Yu J, Ma X. High-expression of ROCK1 modulates the apoptosis of lens epithelial cells in age-related cataracts by targeting p53 gene. Mol Med 2020; 26:124. [PMID: 33297931 PMCID: PMC7727231 DOI: 10.1186/s10020-020-00251-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 11/26/2020] [Indexed: 02/06/2023] Open
Abstract
Background Age-related cataract (ARC) is a serious visual impairment disease, and its pathogenesis is unclear. This article aims to investigate the role of ROCK1 in the apoptosis of lens epithelial cells (LECs) in age-related cataracts. Methods We collect anterior capsule samples from normal people, patients with age-related cataracts, young mice and naturally aging cataract mice. The oxidative stress-induced apoptosis model was constructed by cultivating HLE-B3 cells with H2O2. MTT, Hoechst 33342, and TUNEL assay were performed to explore proliferation and apoptosis. HE assay was used to observe cell morphology. The gene and protein expression were assessed by quantitative real-time PCR, western blot, immunofluorescence, and immunohistochemical staining. Result The results from the clinic and mice experiments showed that the numbers of lens epithelial cells from cataract individuals were less than the control individuals. In vitro, the apoptotic cells were increased in lens epithelial cells under H2O2 treatment. The ROCK1 protein level increased in the lens epithelial cells from age-related cataract patients and the old mice, respectively. Meanwhile, the up-regulation of the ROCK1 gene was associated with H2O2-induced HLE-B3 cells apoptosis. MTT and apoptosis assay showed ROCK1 was necessary in mediating H2O2-induced lens epithelial cells apoptosis through ROCK1 over-expression and knockdown experiment, respectively. Further investigation showed that p53 protein levels had been increased during ROCK1-mediated apoptosis in response to H2O2. Besides, ROCK1 phosphorylated p53 at ser15 to up-regulate its protein level. Conclusions This study established the novel association of ROCK1/p53 signaling with lens epithelial cells apoptosis and age-related cataract genesis.
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Affiliation(s)
- Shanshan Hu
- Hongqi Hospital of Mudanjiang Medical College, 5 Tongxiang Road, Mudanjiang, 157011, Heilongjiang, China. .,Department of Immunology, Basic Medical College of Harbin Medical University, Harbin, 150081, Heilongjiang, China.
| | - Dongmei Su
- Department of Genetics, National Research Institute for Family Planning, Health Department, Beijing, 100081, China.,Graduate School, Peking Union Medical College, Beijing, 100081, China
| | - Lei Sun
- Hongqi Hospital of Mudanjiang Medical College, 5 Tongxiang Road, Mudanjiang, 157011, Heilongjiang, China
| | - Zhongying Wang
- Hongqi Hospital of Mudanjiang Medical College, 5 Tongxiang Road, Mudanjiang, 157011, Heilongjiang, China
| | - Lina Guan
- Department of Genetics, National Research Institute for Family Planning, Health Department, Beijing, 100081, China
| | - Shanhe Liu
- Hongqi Hospital of Mudanjiang Medical College, 5 Tongxiang Road, Mudanjiang, 157011, Heilongjiang, China
| | - Baowen Zhao
- Hongqi Hospital of Mudanjiang Medical College, 5 Tongxiang Road, Mudanjiang, 157011, Heilongjiang, China
| | - Yong Liu
- Medical Research Center of Mudanjiang Medical College, Mudanjiang, 157011, Heilongjiang, China
| | - Cuige Shi
- Department of Genetics, National Research Institute for Family Planning, Health Department, Beijing, 100081, China
| | - Jianbo Yu
- Hongqi Hospital of Mudanjiang Medical College, 5 Tongxiang Road, Mudanjiang, 157011, Heilongjiang, China.
| | - Xu Ma
- Department of Genetics, National Research Institute for Family Planning, Health Department, Beijing, 100081, China. .,Graduate School, Peking Union Medical College, Beijing, 100081, China.
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6
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He Y, Wang Z, Hu Y, Yi X, Wu L, Cao Z, Wang J. Sensitive and selective monitoring of the DNA damage-induced intracellular p21 protein and unraveling the role of the p21 protein in DNA repair and cell apoptosis by surface plasmon resonance. Analyst 2020; 145:3697-3704. [DOI: 10.1039/c9an02464f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sensitive and selective monitoring of DNA damage-induced intracellular p21 protein is proposed using surface plasmon resonance. The method serves as a viable means for unraveling the role of p21 protein in DNA repair and cell apoptosis.
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Affiliation(s)
- Yuhan He
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- P. R. China 410083
| | - Zixiao Wang
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- P. R. China 410083
| | - Yuqing Hu
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- P. R. China 410083
| | - Xinyao Yi
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- P. R. China 410083
| | - Ling Wu
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- P. R. China 410083
| | - Zhong Cao
- Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation
- School of Chemistry and Biological Engineering
- Changsha University of Science and Technology
- Changsha
- P. R. China 410114
| | - Jianxiu Wang
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science
- College of Chemistry and Chemical Engineering
- Central South University
- Changsha
- P. R. China 410083
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7
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Wang X, Lv W, Wu J, Li H, Li F. In situ generated nanozyme-initiated cascade reaction for amplified surface plasmon resonance sensing. Chem Commun (Camb) 2020; 56:4571-4574. [DOI: 10.1039/d0cc01117g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A novel nanozyme-amplified surface plasmon resonance (SPR) sensor was successfully developed based on target-induced in situ generation of AuNPs and a AuNP-guided cascade amplification reaction, with Hg2+ as the target analyte.
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Affiliation(s)
- Xin Wang
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao, 266109
- People's Republic of China
| | - Wenxin Lv
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao, 266109
- People's Republic of China
| | - Jiahui Wu
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao, 266109
- People's Republic of China
| | - Haiyin Li
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao, 266109
- People's Republic of China
| | - Feng Li
- College of Chemistry and Pharmaceutical Sciences
- Qingdao Agricultural University
- Qingdao, 266109
- People's Republic of China
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8
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Li Y, Hu X, Yi W, Li D, Guo Y, Qi B, Yu A. NIR-II Fluorescence Imaging of Skin Avulsion and Necrosis. Front Chem 2019; 7:696. [PMID: 31696110 PMCID: PMC6817597 DOI: 10.3389/fchem.2019.00696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 10/08/2019] [Indexed: 12/22/2022] Open
Abstract
Skin avulsion is commonly seen in individuals exposed to heavy shearing forces. Subcutaneous tissue detachment and bone fractures usually accompany skin avulsion. Thus, the estimation of the extent of damaged tissue is very important. Currently, the viability of skin and subcutaneous tissue is determined by clinical observations, and these observations always underestimate the true extent of the avulsed skin. Herein, we synthesized an innovative probe, CH1055-GRRRDEVDK (CH1055-GK), which can specifically bind to caspase-3 so as to image skin avulsion and define necrotic regions. Our uptake and binding affinity tests in apoptotic cells and evaluation of the probe ex vivo and in vivo showed that the probe has a strong ability to bind caspase-3 in skin avulsion models and that it vividly detected the necrotic area in avulsed skins. Furthermore, the increased fluorescence intensity of the probe in the avulsed skin showed a larger affected area than that determined by clinical observations in live mice. Consequently, our results indicated that observation of the caspase-3-targeted probe CH1055-GK via NIR-II imaging allowed the clear detection of skin avulsion in subjects, indicating its potential as an imaging tool for the early diagnosis of skin avulsion and the determination of necrotic margins.
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Affiliation(s)
- Yizhou Li
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xiang Hu
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Wanrong Yi
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Daifeng Li
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yaqi Guo
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Baiwen Qi
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Aixi Yu
- Department of Orthopedics Trauma and Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
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