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Zhong W, Zhang L, Sun Z, Dong M, Zhang M. UI-MoCap: An Integrated UWB-IMU Circuit Enables 3D Positioning and Enhances IMU Data Transmission. IEEE Trans Neural Syst Rehabil Eng 2024; 32:1034-1044. [PMID: 38408007 DOI: 10.1109/tnsre.2024.3369647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
While inertial measurement unit (IMU)-based motion capture (MoCap) systems have been gaining popularity for human movement analysis, they still suffer from long-term positioning errors due to accumulated drift and inefficient data transmission via Wi-Fi or Bluetooth. To address this problem, this study introduces an integrated ultrawideband (UWB)-IMU system, named UI-MoCap, designed for simultaneous 3D positioning as well as wireless IMU data transmission through UWB pulses. The UI-MoCap comprises mobile UWB tags and hardware-synchronized UWB base stations. Each UWB tag, a compact circular PCB with a 3.4cm diameter, houses a nine-axis IMU unit and a UWB transceiver for data transmission. The base stations are equipped with a UWB transceiver and an Ethernet controller, ensuring efficient reception and management of messages from multiple tags. Experiments were conducted to evaluate the system's validity and reliability of 3D positioning and IMU data transmission. The results demonstrate that UI-MoCap achieves centimeter-level 3D positioning accuracy and maintains consistent positioning performance over time. Moreover, UI-MoCap exhibits high update rates and a minimal packet loss rate for IMU data transmission, significantly outperforming Wi-Fi-based transmission techniques. Future work will explore the fusion of UWB and IMU technologies to further enhance positioning performance, with a focus on human movement analysis and rehabilitation applications.
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Dong M, Gao Y, Fan H, Wang Y, Lv J, Bai J, Shao P, Gao Y, Lv Z, Feng Y. Comparison of clinical efficacy of 3D-printed artificial vertebral body and conventional titanium mesh cage in spinal reconstruction after total en bloc spondylectomy for spinal tumors: a systematic review and meta-analysis. Front Oncol 2024; 14:1327319. [PMID: 38380368 PMCID: PMC10878420 DOI: 10.3389/fonc.2024.1327319] [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: 10/24/2023] [Accepted: 01/22/2024] [Indexed: 02/22/2024] Open
Abstract
Propose This meta-analysis aimed to determine whether 3D-printed artificial vertebral bodies (AVBs) have superior clinical efficacy compared to conventional titanium mesh cages (TMCs) for spinal reconstruction after total en bloc spondylectomy (TES) for spinal tumors. Methods Electronic databases, including PubMed, OVID, ScienceDirect, Embase, CINAHL, Web of Science, Cochrane Library, WANFANG, and CNKI, were searched to identify clinical trials investigating 3D-printed AVB versus conventional TMC from inception to August 2023. Data on the operation time, intraoperative blood loss, preoperative and postoperative visual analogue scale (VAS) scores, preoperative and postoperative Frankel classification of spinal cord injury, vertebral body subsidence, and early complications were collected from eligible studies for a meta-analysis. Data were analyzed using Review Manager 5.4 and Stata 14.0. Results Nine studies assessing 374 patients were included. The results revealed significant differences between the 3D-printed AVB and conventional TMC groups with regard to operation time (P = 0.04), intraoperative blood loss (P = 0.004), postoperative VAS score (P = 0.02), vertebral body subsidence (P < 0.0001), and early complications (P = 0.02). Conversely, the remaining preoperative VAS score and Frankel classifications (pre-and postoperative) did not differ significantly between the groups. Conclusion The 3D-printed AVB in spinal reconstruction after TES for spinal tumors has the advantages of a short operative time, little intraoperative blood loss, weak postoperative pain, low occurrence of vertebral body subsidence and early complications, and a significant curative effect. This could provide a strong basis for physicians to make clinical decisions. Systematic review registration https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42023441521, identifier CRD42023441521.
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Affiliation(s)
- Mingjie Dong
- Department of Orthopaedics, the Second Hospital of Shanxi Medical University, Taiyuan, China
- Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, China
| | - Yingjie Gao
- Department of Orthopaedics, the Second Hospital of Shanxi Medical University, Taiyuan, China
- Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, China
| | - Hao Fan
- Department of Orthopaedics, the Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Yushan Wang
- Department of Orthopaedics, the Second Hospital of Shanxi Medical University, Taiyuan, China
- Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, China
| | - Jia Lv
- Department of Orthopaedics, the Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Junjun Bai
- Department of Orthopaedics, the Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Pengfei Shao
- Department of Orthopaedics, the Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Yu Gao
- Department of Orthopaedics, the Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Zhi Lv
- Department of Orthopaedics, the Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Yi Feng
- Department of Orthopaedics, the Second Hospital of Shanxi Medical University, Taiyuan, China
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Dong M, Feng Y. Reply to Letter to the Editor on "The Albumin to Globulin Ratio Performs Well for Diagnosing Periprosthetic Joint Infection: A Single-Center Retrospective Study". J Arthroplasty 2024; 39:e12-e13. [PMID: 38182325 DOI: 10.1016/j.arth.2023.10.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 10/15/2023] [Accepted: 10/17/2023] [Indexed: 01/07/2024] Open
Affiliation(s)
- Mingjie Dong
- Department of Orthopaedics, The Second Hospital of Shanxi Medical University, Taiyuan, China; Shanxi Key Laboratory of Bone and Soft Tissue Injury Repair, Taiyuan, China
| | - Yi Feng
- Department of Orthopaedics, The Second Hospital of Shanxi Medical University, Taiyuan, China
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Li S, Dong H, Wang Y, Wang S, Lv X, Dong M, Tian S, Shi J. China Alzheimer's Disease and Neurodegenerative Disorder Research (CANDOR) -A Prospective Cohort Study for Alzheimer's Disease and Vascular Cognitive Impairment. J Prev Alzheimers Dis 2024; 11:214-221. [PMID: 38230734 DOI: 10.14283/jpad.2023.97] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 01/18/2024]
Abstract
BACKGROUND Alzheimer's disease (AD) and vascular cognitive impairment (VCI) are the two main causes of dementia. AD and VCI share similar symptoms of cognitive decline and may be attributable to similar risk factors. Establishing a prospective cohort to compare VCI and AD would help to understand vascular risk factors related to dementia. OBJECTIVES China Alzheimer's disease and Neurodegenerative Disorder Research (CANDOR) study is a prospective multicenter cohort study. It aims to study the similarities and differences between AD and post stroke cognitive impairment (PSCI) in neuroimaging changes, disease progression, and multiple omics studies. DESIGN This is an ongoing study. From July 31, 2019, to August 1, 2022, we recruited 1449 participants with ages between 40 and 100 years. The cohort included three groups: AD group, PSCI group, and normal cognitive (NC) group. Data were collected in face-to-face interviews at baseline, and will be followed up every year for 4 years. The PSCI group had additional follow-ups at 3-month and 6-month after enrollment. Brain Magnetic Resonance Imaging (MRI) included high-resolution sequences for intracranial arteries. Cognitive assessments and follow-up information will be prospectively collected. Biological specimens including blood and urine at baseline were collected and tested. PARTICIPANTS The targeted sample size of PSCI group was 500, AD group with 600 and NC group with 2000. There were 1449 participants enrolled. Include 508 participants were in NC group, 387 in AD group and 554 in PSCI group. MEASUREMENTS Demographics, clinical parameters, and medical examinations were collected and performed. Cognitive assessment was performed to assess all cognitive domains including memory, language, executive function, and orientation function. CONCLUSIONS The CANDOR study is a prospective cohort study. Data from this cohort provide us an opportunity to investigate the contribution of vascular factors to dementia pathogenesis.
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Affiliation(s)
- S Li
- Jiong Shi, Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, No. 119, South Fourth Ring West Road, Fengtai District, Beijing 100070, People's Republic of China, Tel +86-10-59978350, Fax +86-10-59973383, Email
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Dong M, Wang Y, Fan H, Yang D, Wang R, Feng Y. The Albumin to Globulin Ratio Performs Well for Diagnosing Periprosthetic Joint Infection: A Single-Center Retrospective Study. J Arthroplasty 2024; 39:229-235.e4. [PMID: 37557968 DOI: 10.1016/j.arth.2023.08.002] [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: 10/05/2022] [Revised: 07/29/2023] [Accepted: 08/01/2023] [Indexed: 08/11/2023] Open
Abstract
BACKGROUND Accurate diagnosis of the periprosthetic joint infection (PJI) remains a challenge for surgeons. The purpose of this study was to assess the value of albumin to globulin ratio (AGR) and globulin (GLB) for diagnosing PJI. METHODS A total of 182 patients undergoing revision after arthroplasty were included and divided into 2 groups, 61 in knee group (PJI: 38; non-PJI: 23) and 121 in hip group (PJI: 26; non-PJI: 95). We used receiver operating characteristic curves to determine the diagnostic value of AGR, GLB, inflammatory markers (erythrocyte sedimentation rate [ESR] and C-reactive protein [CRP]). RESULTS The receiver operating characteristic curves showed the areas under the curve of AGR, GLB, ESR, and CRP in the knee group were 0.940, 0.928, 0.867, and 0.848, respectively, and they were 0.855, 0.831, 0.886, and 0.912 in the hip group. The optimal predictive cut-off values for AGR in knee and hip groups were 1.375 and 1.295, respectively. The sensitivity and specificity of AGR, respectively, were 94.7% and 87.0% (knee group) and 84.6% and 75.8% (hip group) for diagnosing PJI. The sensitivity of "AGR or ESR" and specificity of "AGR and GLB" in the knee group were 99.6% and 98.9%, respectively. CONCLUSION For knee or hip groups, the AGR exhibits good value for the diagnosis of PJI comparable with ESR and CRP. The AGR and GLB, together with CRP and ESR, should be used as the preferred indicators for diagnosing PJI. The "AGR or ESR" and "AGR and GLB" in the knee group have an excellent diagnostic value in sensitivity and specificity, respectively.
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Affiliation(s)
- Mingjie Dong
- Department of Orthopaedics, The Second Clinical Medical College of Shanxi Medical University, TaiYuan, China
| | - Yushan Wang
- Department of Orthopaedics, The Second Clinical Medical College of Shanxi Medical University, TaiYuan, China
| | - Hao Fan
- Department of Orthopaedics, The Second Clinical Medical College of Shanxi Medical University, TaiYuan, China
| | - Dinglong Yang
- Department of Orthopaedics, The Second Clinical Medical College of Shanxi Medical University, TaiYuan, China
| | - Renwei Wang
- Department of Orthopaedics, The Second Clinical Medical College of Shanxi Medical University, TaiYuan, China
| | - Yi Feng
- Department of Orthopaedics, The Second Hospital of Shanxi Medical University, TaiYuan, China
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Chen H, Zhao X, Hu S, You T, Xia C, Gao M, Dong M, Qiao Y, Zhao F. Estimation of economic burden throughout course of cervical squamous intraepithelial lesion and cervical cancer in China: A nationwide multicenter cross-sectional study. Chin J Cancer Res 2023; 35:675-685. [PMID: 38204443 PMCID: PMC10774142 DOI: 10.21147/j.issn.1000-9604.2023.06.11] [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: 09/24/2023] [Accepted: 11/15/2023] [Indexed: 01/12/2024] Open
Abstract
Objective Cervical squamous intraepithelial lesion (SIL) and cervical cancer are major threats to females' health and life in China, and we aimed to estimate the economic burden associated with their diagnosis and treatment. Methods A nationwide multicenter, cross-sectional, hospital-based survey was conducted in 26 qualified hospitals across seven administrative regions of China. We investigated females who had been pathologically diagnosed with SIL and cervical cancer, and included five disease courses ("diagnosis", "initial treatment", "chemoradiotherapy", "follow-up" and "recurrence/progression/metastasis") to estimate the total costs. The median and interquartile range (IQR) of total costs (including direct medical, direct non-medical, and indirect costs), reimbursement rate by medical insurance, and catastrophic health expenditures in every clinical stage were calculated. Results A total of 3,471 patients in different clinical stages were analyzed, including low-grade SIL (LSIL) (n=549), high-grade SIL (HSIL) (n=803), cervical cancer stage IA (n=226), IB (n=610), IIA (n=487), IIB (n=282), III (n=452) and IV (n=62). In urban areas, the estimated total costs of LSIL and HSIL were [Formula: see text]1,637.7 (IQR: [Formula: see text]956.4-[Formula: see text]2,669.2) and [Formula: see text]2,467.1 (IQR: [Formula: see text]1,579.1-[Formula: see text]3,762.3), while in rural areas the costs were [Formula: see text]459.0 (IQR: [Formula: see text]167.7-[Formula: see text]1,330.3) and [Formula: see text]1,230.5 (IQR: [Formula: see text]560.6-[Formula: see text]2,104.5), respectively. For patients with cervical cancer stage IA, IB, IIA, IIB, and III-IV, the total costs were [Formula: see text]15,034.9 (IQR: [Formula: see text]11,083.4-[Formula: see text]21,632.4), [Formula: see text]19,438.6 (IQR: [Formula: see text]14,060.0-[Formula: see text]26,505.9), [Formula: see text]22,968.8 (IQR: [Formula: see text]16,068.8-[Formula: see text]34,615.9), [Formula: see text]26,936.0 (IQR: [Formula: see text]18,176.6-[Formula: see text]41,386.0) and [Formula: see text]27,332.6 (IQR: [Formula: see text]17,538.7-[Formula: see text]44,897.0), respectively. Medical insurance covered 43%-55% of direct medical costs for cervical cancer patients, while the coverage for SIL patients was 19%-43%. For most cervical cancer patients, the expense was catastrophic, and the extent of catastrophic health expenditure was about twice large for rural patients than that for urban patients in each stage. Conclusions The economic burden of SIL and cervical cancer in China is substantial, with a significant proportion of the costs being avoidable for patients with LSIL. Even for those with medical insurance, catastrophic health expenditures are also a major concern for patients with cervical cancer, particularly for those living in rural areas.
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Affiliation(s)
- Hao Chen
- Department of Cancer Epidemiology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Xuelian Zhao
- Department of Cancer Epidemiology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Shangying Hu
- Department of Cancer Epidemiology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Tingting You
- Department of Cancer Epidemiology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Changfa Xia
- Office of Cancer Screening, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Meng Gao
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Mingjie Dong
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Youlin Qiao
- Center for Global Health, School of Population Medicine and Public Health, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Fanghui Zhao
- Department of Cancer Epidemiology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Tang SW, Kwok SH, Li X, Tang KH, Kubi JA, Brah AS, Yeung K, Dong M, Lam YW. A new class of antimicrobial therapeutics targeting the envelope stress response of Gram-negative bacteria: abridged secondary publication. Hong Kong Med J 2023; 29 Suppl 4:39-44. [PMID: 37690807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023] Open
Affiliation(s)
- S W Tang
- Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China
| | - S H Kwok
- Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China
| | - X Li
- Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China
| | - K H Tang
- Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China
| | - J A Kubi
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong SAR, China
| | - A S Brah
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong SAR, China
| | - K Yeung
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong SAR, China
| | - M Dong
- Department of Chemistry, City University of Hong Kong, Hong Kong SAR, China
| | - Y W Lam
- School of Applied Science, University of Huddersfield, United Kingdom
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Li W, Dong M, Li Y, Dong H. Macrophages-Cancer Membrane-Encapsulated Metal-Organic Frameworks with Copper-Depleting Moiety for Mitochondria-Targeted Therapeutics. Adv Healthc Mater 2023; 12:e2202986. [PMID: 36943933 DOI: 10.1002/adhm.202202986] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 11/17/2022] [Revised: 03/15/2023] [Indexed: 03/23/2023]
Abstract
Mitochondria-targeted therapeutics are an attractive approach against energy-dependent cancer. However, effective mitochondria organelle therapeutics agents are still highly desirable. Herein, a mitochondria-targeted therapeutics platform, termed CDM@MUiO-DP@MCHM, consisting of macrophages-cancer hybrid membrane (MCHM) encapsulated MUiO-66 metal-organic frameworks (MOFs) is reported, which is loaded with microRNA (miRNA) biomarker detection probe (DP) for cancer diagnosis and copper-depleting moiety (CDM) for mitochondrial copper depletion to suppress cancer growth. Using nude mice bearing MCF-7 as model, after injecting intravenously via the caudal vein of mice, the encapsulation of MCHM can not only greatly enhance the cancer homing-targeting ability of the nanoparticles (NPs) but also endows the NPs the immune escape capacity to extend the circulation time. The miRNA-21 biomarker can be detected by the fluorescence signal for diagnosis, while the CDM induced energy deficiency and compromised mitochondria membrane potential, leading to apoptosis of the cancer cell. The good performance of CDM@MUiO-DP@MCHM suggest the great potential mitochondria organelle therapeutics.
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Affiliation(s)
- Weiqun Li
- School of Science, Harbin Institute of Technology (Shenzhen), 518055, Shenzhen, China
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001, Harbin, China
| | - Mingjie Dong
- Marshall Laboratory of Biomedical Engineering, Precision Medicine and Health Research Institute, School of Biomedical Engineering, Health Science Center, Shenzhen University, 518060, Shenzhen, China
| | - Yingchun Li
- School of Science, Harbin Institute of Technology (Shenzhen), 518055, Shenzhen, China
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, 150001, Harbin, China
| | - Haifeng Dong
- Marshall Laboratory of Biomedical Engineering, Precision Medicine and Health Research Institute, School of Biomedical Engineering, Health Science Center, Shenzhen University, 518060, Shenzhen, China
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Tan Y, Zhou J, Xing X, Wang J, Huang J, Liu H, Chen J, Dong M, Xiang Q, Dong H, Zhang X. DNA Assembly of Plasmonic Nanostructures Enables In Vivo SERS-Based MicroRNA Detection and Tumor Photoacoustic Imaging. Anal Chem 2023. [PMID: 37467354 DOI: 10.1021/acs.analchem.3c00775] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
Controllable self-assembly of the DNA-linked gold nanoparticle (AuNP) architecture for in vivo biomedical applications remains a key challenge. Here, we describe the use of the programmed DNA tetrahedral structure to control the assembly of three different types of AuNPs (∼20, 10, and 5 nm) by organizing them into defined positioning and arrangement. A DNA-assembled "core-satellite" architecture is built by DNA sequencing where satellite AuNPs (10 and 5 nm) surround a central core AuNP (20 nm). The density and arrangement of the AuNP satellites around the core AuNP were controlled by tuning the size and amount of the DNA tetrahedron functionalized on the core AuNPs, resulting in strong electromagnetic field enhancement derived from hybridized plasmonic coupling effects. By conjugating with the Raman molecule, strong surface-enhanced Raman scattering photoacoustic imaging signals could be generated, which were able to image microRNA-21 and tumor tissues in vivo. These results provided an efficient strategy to build precision plasmonic superstructures in plasmonic-based bioanalysis and imaging.
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Affiliation(s)
- Yan Tan
- Marshall Laboratory of Biomedical Engineering, Precision Medicine and Health Research Institute, Research Center for Biosensor and Nanotheranostic, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Jianxing Zhou
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronics Engineering, Shenzhen University, Shenzhen 518060, China
| | - Xiaotong Xing
- Marshall Laboratory of Biomedical Engineering, Precision Medicine and Health Research Institute, Research Center for Biosensor and Nanotheranostic, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Junren Wang
- Marshall Laboratory of Biomedical Engineering, Precision Medicine and Health Research Institute, Research Center for Biosensor and Nanotheranostic, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Jinkun Huang
- Marshall Laboratory of Biomedical Engineering, Precision Medicine and Health Research Institute, Research Center for Biosensor and Nanotheranostic, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Huiyu Liu
- Marshall Laboratory of Biomedical Engineering, Precision Medicine and Health Research Institute, Research Center for Biosensor and Nanotheranostic, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Jiajie Chen
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronics Engineering, Shenzhen University, Shenzhen 518060, China
| | - Mingjie Dong
- Marshall Laboratory of Biomedical Engineering, Precision Medicine and Health Research Institute, Research Center for Biosensor and Nanotheranostic, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Qin Xiang
- Marshall Laboratory of Biomedical Engineering, Precision Medicine and Health Research Institute, Research Center for Biosensor and Nanotheranostic, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Haifeng Dong
- Marshall Laboratory of Biomedical Engineering, Precision Medicine and Health Research Institute, Research Center for Biosensor and Nanotheranostic, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Xueji Zhang
- Marshall Laboratory of Biomedical Engineering, Precision Medicine and Health Research Institute, Research Center for Biosensor and Nanotheranostic, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
- Guangdong Laboratory of Artificial Intelligence and Digital Economy (SZ), Shenzhen 518060, China
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Dong M, Fan H, Yang D, Sun X, Yan C, Feng Y. Comparison of spatiotemporal, kinematic, and kinetic gait characteristics in total and unicompartmental knee arthroplasty during level walking: A systematic review and meta-analysis. Gait Posture 2023; 104:58-69. [PMID: 37321113 DOI: 10.1016/j.gaitpost.2023.06.005] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 03/26/2023] [Accepted: 06/05/2023] [Indexed: 06/17/2023]
Abstract
PURPOSE This meta-analysis was performed to compare the spatiotemporal, kinematic, and kinetic gait characteristics during level walking between total knee arthroplasty (TKA) and unicompartmental knee arthroplasty (UKA). METHODS An electronic database literature search was performed to screen clinical trials which were included the studies evaluating not only spatiotemporal, kinematic, and kinetic gait parameters, but also knee range of motion and knee score (Knee Society Score and Oxford Knee Score, i.e., KSS and OKS). The data analysis was performed using statistical software Stata 14.0 and Review Manager 5.4. RESULTS Thirteen studies (369 knees) that met the criteria were eventually included in this meta-analysis. The results revealed significant differences between UKA and TKA with regard to walking speed (P = 0.04), stride length (P = 0.02), maximum knee flexion at loading (P = 0.001), the 1st peak of vert-GRF (P = 0.006), the 1st valley of vert-GRF (P = 0.007), knee internal rotational moment (P = 0.04), knee extension (P < 0.00001), and KSS Function score (P = 0.05). In contrast, there were no statistical differences in the remaining spatiotemporal, kinematic, and kinetic gait parameters. CONCLUSION Medial UKA design is superior to TKA design with regard to walking speed, stride length, maximum knee flexion at loading, the 1st peak and the 1st valley of vert-GRF, knee internal rotational moment, knee extension, and KSS Function score. And it could provide a stronger basis for physicians to make clinical decisions.
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Affiliation(s)
- Mingjie Dong
- Department of Orthopaedics, the Second Clinical Medical College of Shanxi Medical University, 030000 Taiyuan, China
| | - Hao Fan
- Department of Orthopaedics, the Second Clinical Medical College of Shanxi Medical University, 030000 Taiyuan, China
| | - Dinglong Yang
- Department of Orthopaedics, the Second Clinical Medical College of Shanxi Medical University, 030000 Taiyuan, China
| | - Xiaoyu Sun
- Department of Orthopaedics, the Second Clinical Medical College of Shanxi Medical University, 030000 Taiyuan, China
| | - Chaochao Yan
- Department of Orthopaedics, the Second Clinical Medical College of Shanxi Medical University, 030000 Taiyuan, China
| | - Yi Feng
- Department of Orthopaedics, the Second Hospital of Shanxi Medical University, 030000 Taiyuan, China.
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Li W, Peng X, Mei X, Dong M, Li Y, Dong H. Multifunctional DNA Tetrahedron for Alzheimer's Disease Mitochondria-Targeted Therapy by MicroRNA Regulation. ACS Appl Mater Interfaces 2023; 15:22977-22984. [PMID: 37145038 DOI: 10.1021/acsami.3c03181] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The principal hallmark of Alzheimer's disease (AD) is neuron mitochondrial dysfunction, whereas mitochondrial miRNAs potentially play important roles. Nevertheless, efficacious mitochondria organelle therapeutic agents for treatment and management of AD are highly advisable. Herein, we report a multifunctional DNA tetrahedron-based mitochondria-targeted therapeutic platform, termed tetrahedral DNA framework-based nanoparticles (TDFNs), which was modified with triphenylphosphine (TPP) for mitochondria-targeting, cholesterol (Chol) for crossing the central nervous system, and functional antisense oligonucleotide (ASO) for both AD diagnosis and gene silencing therapy. After injecting intravenously through the tail vein of 3 × Tg-AD model mice, TDFNs can both easily cross the blood brain barrier and accurately arrive at the mitochondria. The functional ASO could not only be detected via the fluorescence signal for diagnosis but also mediate the apoptosis pathway through knocking miRNA-34a down, leading to recovery of the neuron cells. The superior performance of TDFNs suggests the great potential in mitochondria organelle therapeutics.
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Affiliation(s)
- Weiqun Li
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, Guangdong 518055, China
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Xin Peng
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, Guangdong 518055, China
| | - Xuecui Mei
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, Guangdong 518055, China
| | - Mingjie Dong
- Marshall Laboratory of Biomedical Engineering, School of Biomedical Engineering, Health Science Center, Precision Medicine and Health Research Institute, Shenzhen University, Shenzhen, Guangdong 518060, China
| | - Yingchun Li
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, Guangdong 518055, China
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Haifeng Dong
- Marshall Laboratory of Biomedical Engineering, School of Biomedical Engineering, Health Science Center, Precision Medicine and Health Research Institute, Shenzhen University, Shenzhen, Guangdong 518060, China
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12
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Li G, Tang X, Li J, Dong M. Error identification and compensation regarding the kinematic parameter of the MD-PEF for tibial deformity correction. Comput Biol Med 2023; 158:106813. [PMID: 36966553 DOI: 10.1016/j.compbiomed.2023.106813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 02/18/2023] [Accepted: 03/20/2023] [Indexed: 03/31/2023]
Abstract
The correction accuracy of an external fixator is crucial to the treatment outcome of deformity correction and patient safety. In this study, the mapping model is established between the pose error and kinematic parameter error of the motor-driven parallel external fixator (MD-PEF). Subsequently, the kinematic parameter identification and error compensation algorithm of the external fixator is established based on the least squares method. An experimental platform based on the developed MD-PEF and Vicon motion capture system is constructed for kinematic calibration experiments. Experimental results show that the correction accuracy of the MD-PEF after calibration is as follows: translation accuracy dE1 = 0.36 mm, axial translation accuracy dE2 = 0.25 mm, angulation accuracy dE3 = 0.27°, and rotation accuracy dE4 = 0.2°. The accuracy detection experiment verifies the kinematic calibration results, which further validates the feasibility and reliability of the error identification and compensation algorithm constructed by the least squares method. The calibration approach used in this work also provides an effective way to improve the accuracy of other medical robots.
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13
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Luo Y, Gao X, Dong M, Zeng T, Chen Z, Yang M, Huang Z, Wang R, Pan F, Xiao Y. Exploring the structural properties of cathode and anode materials in Li-ion battery via neutron diffraction technique. Chinese Journal of Structural Chemistry 2023. [DOI: 10.1016/j.cjsc.2023.100032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
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14
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Li J, Wang S, Zuo S, Dong M, Jiao R. A 3-DOF electromotor-driven external fixator for foot and ankle deformity correction based on X-ray digital measurement. Int J Med Robot 2023; 19:e2502. [PMID: 36705096 DOI: 10.1002/rcs.2502] [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: 07/29/2022] [Revised: 12/26/2022] [Accepted: 01/25/2023] [Indexed: 01/28/2023]
Abstract
BACKGROUND The use of external fixators to treat foot and ankle deformities remains a challenge in orthopedic surgery due to their diversity. We hope to improve the automation and accuracy of the correction process. METHODS A three-degree-of-freedom (3-DOF) electromotor-driven external fixator for uniplanar foot and ankle deformities was proposed. Computer-assisted correction software was developed to help surgeons use digital technology to measure the required parameters from patients' X-ray radiographs. The correction trajectory and the prescriptions were generated in the software based on the proposed correction strategy. RESULTS Two clinical cases were simulated to verify the correction ability of the developed external fixator. The results showed that the angular and displacement deformities were well corrected. CONCLUSIONS The developed external fixator can accurately and automatically correct foot and ankle deformities with the help of computer-assisted correction software, which significantly reduces the burden on surgeons and patients.
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Affiliation(s)
- Jianfeng Li
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, China
| | - Shuang Wang
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, China
| | - Shiping Zuo
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, China
| | - Mingjie Dong
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, China
| | - Ran Jiao
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, China
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15
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Zhou Y, Zhang R, Dong M. Inhibition of TRPC4/5 Channel Is Effective in Protecting against Histamine-Induced Hyperpermeability by Blocking Ca 2+ Influx in Lung Microvascular Endothelial Cells. Biol Pharm Bull 2023; 46:864-868. [PMID: 37258152 DOI: 10.1248/bpb.b22-00916] [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: 06/02/2023]
Abstract
Dysfunction of lung microvascular endothelium is a major feature in the pathobiology of pulmonary edema and hypoxic respiratory failure. Histamine induces lung microvascular endothelial barrier disruption and hyperpermeability upon evoking intracellular Ca2+ ([Ca2+]i) dynamics via binding to its receptors. Transient receptor potential canonical (TRPC) channels are Ca2+-permeable channel and stimulated by the agonists of G-protein-coupled receptors (GPCR). Here, we assessed histamine induced [Ca2+]i increases in human lung microvascular endothelial cells (HLMVEC) by using live cell Ca2+ imaging. We found that histamine increased [Ca2+]i was maintained at a static elevated level after a transient peak. The elevated Ca2+ plateau was vanished when extracellular Ca2+ was removed, indicating Ca2+ influx from extracellular mediated the histamine-induced Ca2+ plateau. TRPC4/5 channels antagonists, ML204 (10 µM) and HC070 (1 µM), significantly inhibited the Ca2+ plateaus, which was not influenced by Pyr3 or larixyl, the antagonists of TRPC3/6. Furthermore, ML204 or HC070 effectively suppressed the permeability response to histamine in HLMVEC. Our results indicated that histamine-induced Ca2+ influx may be mediated by TRPC4/5 channels and the antagonist of the channel significantly improved histamine-induced HLMVEC dysfunction.
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Affiliation(s)
- Yan Zhou
- Medical Laboratory Department, The Second Hospital of Hebei Medical University
| | - Rui Zhang
- Medical Laboratory Department, The Second Hospital of Hebei Medical University
| | - Mingjie Dong
- General Surgery Department, The Second Hospital of Hebei Medical University
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16
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Dong M, Hu N, Hua Y, Xu X, Kandadi M, Guo R, Jiang S, Nair S, Hu D, Ren J. Erratum to: “Chronic Akt activation attenuated lipopolysaccharide-induced cardiac dysfunction via Akt/GSK3β-dependent inhibition of apoptosis and ER stress” [Biochim. Biophys. Acta. 1832(6) 2013 Jun; 848–63. doi:10.1016/j.bbadis.2013.02.023. Epub 2013 Mar 6.PMID: 23474308]. Biochim Biophys Acta Mol Basis Dis 2023; 1869:166567. [DOI: 10.1016/j.bbadis.2022.166567] [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: 11/07/2022]
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17
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Dong M, Fan W, Li J, Zhang P. Patient-Specific Exercises with the Development of an End-Effector Type Upper Limb Rehabilitation Robot. J Healthc Eng 2022; 2022:4125606. [PMID: 36337379 PMCID: PMC9633207 DOI: 10.1155/2022/4125606] [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] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/23/2022] [Accepted: 10/03/2022] [Indexed: 02/08/2024]
Abstract
End-effector type upper limb rehabilitation robots (ULRRs) are connected to patients at one distal point, making them have simple structures and less complex control algorithms, and they can avoid abnormal motion and posture of the target anatomical joints and specific muscles. Given that the end-effector type ULRR focuses more on the rehabilitation of the combined motion of upper limb chain, assisting the patient to perform collaborative tasks, and its intervention has some advantages than the exoskeleton type ULRR, we developed a novel three-degree-of-freedom (DOF) end-effector type ULRR. The advantage of the mechanical design is that the designed end-effector type ULRR can achieve three DOFs by using a four-bar mechanism and a lifting mechanism; we also developed the patient-specific exercises including patient-passive exercise and patient-cooperative exercise, and the advantage of the developed patient-cooperative exercise is that we simplified the human-robot coupling system model into a single spring system instead of the mass-spring-damp system, which efficiently improved the response speed of the control system. In terms of the organization structure of the work, we introduced the end-effector type ULRR's mechanical design, control system, inverse solution of positions, patient-passive exercise based on the inverse solution of positions and the linear position interpolation of servo drives, and patient-cooperative exercise based on the spring model, in sequence. Experiments with three healthy subjects have been conducted, with results showing good trajectory tracking performance in patient-passive exercise and showing effective, flexible, and good real-time interactive performance in patient-cooperative exercise.
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Affiliation(s)
- Mingjie Dong
- Faculty of Materials and Manufacturing, Beijing University of Technology, No. 100 Pingleiyuan Chaoyang District, Beijing 100124, China
| | - Wenpei Fan
- Faculty of Materials and Manufacturing, Beijing University of Technology, No. 100 Pingleiyuan Chaoyang District, Beijing 100124, China
| | - Jianfeng Li
- Faculty of Materials and Manufacturing, Beijing University of Technology, No. 100 Pingleiyuan Chaoyang District, Beijing 100124, China
| | - Pengfei Zhang
- Faculty of Materials and Manufacturing, Beijing University of Technology, No. 100 Pingleiyuan Chaoyang District, Beijing 100124, China
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Yang D, Li H, Chen Y, Ren W, Dong M, Li C, Jiao Q. Immunomodulatory mechanisms of abatacept: A therapeutic strategy for COVID-19. Front Med (Lausanne) 2022; 9:951115. [PMID: 35957855 PMCID: PMC9357915 DOI: 10.3389/fmed.2022.951115] [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: 05/27/2022] [Accepted: 07/04/2022] [Indexed: 11/13/2022] Open
Abstract
Coronavirus disease 2019 (COVID-19) caused by coronavirus-2 (SARS-CoV-2) infection has rapidly spread throughout the world and become a major threat to human beings. Cytokine storm is a major cause of death in severe patients. Abatacept can suppress cytokines used as antirheumatic drugs in clinical applications. This study analyzed the molecular mechanisms of abatacept treatment for COVID-19. Differentially expressed genes (DEGs) were identified by analyzing expression profiling of abatacept treatment for rheumatoid arthritis (RA) patients and SARS-CoV-2 infection patients. We found that 59 DEGs were upregulated in COVID-19 patients and downregulated following abatacept treatment. Gene set enrichment analysis (GSEA) and Gene Ontology (GO) analysis showed that immune and inflammatory responses were potential regulatory mechanisms. Moreover, we verified 8 targeting genes and identified 15 potential drug candidates for the treatment of COVID-19. Our study illustrated that abatacept could be a promising property for preventing severe COVID-19, and we predicted alternative potential drugs for the treatment of SARS-CoV-2 infection.
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Affiliation(s)
- Dinglong Yang
- Second Clinical Medical College, Shanxi Medical University, Taiyuan, China
| | - Hetong Li
- Second Clinical Medical College, Shanxi Medical University, Taiyuan, China
| | - Yujing Chen
- School of Public Health, Xi'an Jiaotong University, Xi'an, China
| | - Weiping Ren
- Department of Orthopedics, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Mingjie Dong
- Second Clinical Medical College, Shanxi Medical University, Taiyuan, China
| | - Chunjiang Li
- Department of Orthopedics, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Qiang Jiao
- Department of Orthopedics, The Second Hospital of Shanxi Medical University, Taiyuan, China
- *Correspondence: Qiang Jiao
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19
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Li C, Dong M, Yang D, Zhang Z, Shi J, Zhao R, Wei X. Comparison of posterior cruciate retention and substitution in total knee arthroplasty during gait: a systematic review and meta-analysis. J Orthop Surg Res 2022; 17:152. [PMID: 35264236 PMCID: PMC8906002 DOI: 10.1186/s13018-022-03047-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 03/02/2022] [Indexed: 12/02/2022] Open
Abstract
Background To compare the gait patterns between posterior cruciate retention and substitution in total knee arthroplasty (TKA). Methods Electronic databases including the PubMed, Embase, CINAHL, Web of Science, and Cochrane databases were searched to identify clinical trials investigating posterior cruciate retention versus substitution in TKA. The outcome measurements were the kinematic gait parameters (flexion at heel strike, maximum flexion during loading response, flexion range during loading, minimal flexion at terminal stance, maximal flexion at the swing, and total flexion during the gait cycle), Knee Society Score (KSS), knee flexion, knee extension, and walking speed. Statistical software Review Manager 5.4 and Stata 14.0 were used for data analysis. Results There were finally 9 studies included in this meta-analysis. The results did not reveal differences between posterior cruciate retention (CR) and posterior cruciate substitution (PS) groups in TKA, in terms of kinematic gait parameters, knee extension, walking speed, and KSS. However, the PS group had a significantly larger knee flexion angle than that in the CR group [weighted mean difference = − 3.20, 95% CI − 6.13 to − 0.28, P = 0.03]. Conclusion Both the posterior cruciate retention and posterior cruciate substitution lead to obvious improvements in patient function and have their advantages in getting a good cup position. The PS design is significantly better on the knee flexion, while there are no statistical differences in kinematic gait parameters and outcome scores between them. This might indicate that surgeons do not necessarily need a PS design to substitute the posterior cruciate ligament during TKA.
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Affiliation(s)
- Chunjiang Li
- Department of Orthopaedics, The Second Hospital of Shanxi Medical University, No. 382 Wuyi Road, Taiyuan, 030001, China
| | - Mingjie Dong
- Department of Orthopaedics, The Second Clinical Medical College of Shanxi Medical University, Taiyuan, 030001, China
| | - Dinglong Yang
- Department of Orthopaedics, The Second Clinical Medical College of Shanxi Medical University, Taiyuan, 030001, China
| | - Zhiqiang Zhang
- Department of Orthopaedics, The Second Hospital of Shanxi Medical University, No. 382 Wuyi Road, Taiyuan, 030001, China
| | - Junjun Shi
- Department of Orthopaedics, The Second Hospital of Shanxi Medical University, No. 382 Wuyi Road, Taiyuan, 030001, China
| | - Ruipeng Zhao
- Department of Orthopaedics, The Second Hospital of Shanxi Medical University, No. 382 Wuyi Road, Taiyuan, 030001, China
| | - Xiaochun Wei
- Department of Orthopaedics, The Second Hospital of Shanxi Medical University, No. 382 Wuyi Road, Taiyuan, 030001, China.
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20
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Huang Q, Liu FY, Mao NY, Sun JY, Dong M, Xie H, Liu F, Zhang H, Yu XL, Dong JP, Xu W, Huang F. [Application of oral fluid in SARS-CoV-2 nucleic acid and antibody detection]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:355-359. [PMID: 35381659 DOI: 10.3760/cma.j.cn112150-20211211-01146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
This study aimed to explore the application value of new biological specimen oral fluid in SARS-CoV-2 nucleic acid and antibody detection. Oral fluid and paired respiratory and blood specimens from 7 confirmed cases of two COVID-19 cluster epidemic were collected in Beijing from October to November 2021. SARS-CoV-2 virus and IgG antibody were detected by real time PCR kits and serum antibody detection reagents, and SARS-CoV-2 IgG antibody in oral fluids was detected by a new established method of magnetic particle chemiluminescence. The results showed that the nucleic acid amplification test of SARS-CoV-2 on nasopharyngeal swabs, throat swabs and oral fluid specimens from 3 confirmed cases of COVID-19 was positive, among which the Ct value for ORF1a/b and N gene of oral fluid samples in 2 cases was close to that of throat swab, and the Ct value of oral fluid sample for 1 case was higher than that of throat swab. The complete genome sequence of one oral fluid specimen was obtained, which belonged to the VOC/Delta variant strain. The SARS-CoV-2 IgG antibodies of the paired oral fluid and serum were all positive, and the S/CO values of oral fluid were all lower than those of serum. The series of oral fluid results showed that SARS-CoV-2 IgG antibody level increased from 11 to 32 days after the onset of the disease.
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Affiliation(s)
- Q Huang
- School of Public Health, Capital Medical University, Beijing 100069, China Institute of Preventive Immunization, Beijing Center for Disease Control and Prevention/Beijing Academy for Preventive Medicine/Beijing Institute of Tuberculosis Control Research and Prevention, Beijing 100013, China
| | - F Y Liu
- Department of Microbiology Laboratory, Beijing Haidian Center for Disease Control and Prevention, Beijing 100094, China
| | - N Y Mao
- Institute for Viral Disease Control and Prevention, Chinese Centers for Disease control and Prevention, Beijing 102206, China NHC Key Laboratory for Medical Virology and Viral Diseases, Beijing 102206, China
| | - J Y Sun
- Department Infectious Disease, Beijing Haidian Hospital, Beijing 100080, China
| | - M Dong
- Institute of Preventive Immunization, Beijing Center for Disease Control and Prevention/Beijing Academy for Preventive Medicine/Beijing Institute of Tuberculosis Control Research and Prevention, Beijing 100013, China
| | - H Xie
- Institute of Preventive Immunization, Beijing Center for Disease Control and Prevention/Beijing Academy for Preventive Medicine/Beijing Institute of Tuberculosis Control Research and Prevention, Beijing 100013, China
| | - F Liu
- Department of Microbiology Laboratory, Beijing Haidian Center for Disease Control and Prevention, Beijing 100094, China
| | - H Zhang
- Department of Microbiology Laboratory, Beijing Haidian Center for Disease Control and Prevention, Beijing 100094, China
| | - X L Yu
- Institute of Preventive Immunization, Beijing Center for Disease Control and Prevention/Beijing Academy for Preventive Medicine/Beijing Institute of Tuberculosis Control Research and Prevention, Beijing 100013, China
| | - J P Dong
- Department Infectious Disease, Beijing Haidian Hospital, Beijing 100080, China
| | - Wenbo Xu
- Institute for Viral Disease Control and Prevention, Chinese Centers for Disease control and Prevention, Beijing 102206, China NHC Key Laboratory for Medical Virology and Viral Diseases, Beijing 102206, China
| | - Fang Huang
- School of Public Health, Capital Medical University, Beijing 100069, China Institute of Preventive Immunization, Beijing Center for Disease Control and Prevention/Beijing Academy for Preventive Medicine/Beijing Institute of Tuberculosis Control Research and Prevention, Beijing 100013, China
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21
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Suo LD, Zhao D, Chen M, Li J, Dong M, Wang YT, Yu XL, Li MZ, Huang F, Pang XH, Lu L. [An investigation on serum antibody level of varicella-zoster virus in healthy population in Beijing]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:108-113. [PMID: 35184436 DOI: 10.3760/cma.j.cn112150-20211221-01174] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To assess the level and trend of varicella-zoster virus (VZV) antibody among healthy population in Beijing in 2017, after the five-year implementation of the two doses varicella vaccination strategy in 2012, and to provide evidence for scientific evaluation of immunization strategy. Methods: A total of 2 144 subjects in ten age groups from 8 districts of Beijing city were recruited in this study using cross-sectional survey based on multi-stage cluster random sampling method. Serum samples were collected and VZV antibody was detected by ELISA. The influencing factors of antibody concentration and positive rate were analyzed and compared with the study in 2012. The antibody concentration and antibody positive rate were analyzed by nonparametric test and χ² test respectively. Results: The ratio of subjects with registered residence in Beijing city to other provinces was 1∶1. The ratio of male to female was 1∶1.08. The median concentration of VZV antibody was 341.4 (78.6, 1 497.8) mIU/ml, and the total antibody positive rate was 71.1% (1 524/2 144). There were significant differences in antibody positive rate (χ²=736.39, P<0.01) and antibody concentration (χ²=740.34, P<0.01) among different age groups. The antibody positive rate generally increased with age (χ²trend=7.32, Ptrend<0.01). Among 862 children under 14 years old, the antibody positive rate of two doses vaccination 72.8% (182/250) was significantly higher than that of one dose vaccination 51.9% (154/297) (χ²=25.14, P<0.01). There was significant difference between 1-4 years old group (χ²=11.71, P<0.01) and 10-14 years old group (χ²=5.95, P=0.02), but not in 5-9 years old group (χ²=3.00, P=0.07). Compared with the study in 2012, the antibody positive rate increased in 5-9 years old group (χ²=14.35, P<0.01) and decreased in 1-4 years old group (χ²=11.51, P=0.01) in 2017. Conclusion: The recommended varicella booster vaccination has significantly improved the VZV antibody level of children in Beijing city. In the future, it is necessary to explore a more optimized two doses varicella vaccination schedule for children in combination with epidemiological evidence.
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Affiliation(s)
- L D Suo
- Institute of Immunization and Prevention, Beijing Municipal Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Institute of Immunization and Prevention, Beijing 100013, China
| | - D Zhao
- Institute of Immunization and Prevention, Beijing Municipal Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Institute of Immunization and Prevention, Beijing 100013, China
| | - M Chen
- Institute of Immunization and Prevention, Beijing Municipal Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Institute of Immunization and Prevention, Beijing 100013, China
| | - J Li
- Institute of Immunization and Prevention, Beijing Municipal Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Institute of Immunization and Prevention, Beijing 100013, China
| | - M Dong
- Institute of Immunization and Prevention, Beijing Municipal Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Institute of Immunization and Prevention, Beijing 100013, China
| | - Y T Wang
- Institute of Immunization and Prevention, Beijing Municipal Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Institute of Immunization and Prevention, Beijing 100013, China
| | - X L Yu
- Institute of Immunization and Prevention, Beijing Municipal Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Institute of Immunization and Prevention, Beijing 100013, China
| | - M Z Li
- Institute of Immunization and Prevention, Beijing Municipal Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Institute of Immunization and Prevention, Beijing 100013, China
| | - F Huang
- Institute of Immunization and Prevention, Beijing Municipal Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Institute of Immunization and Prevention, Beijing 100013, China
| | - X H Pang
- Institute of Immunization and Prevention, Beijing Municipal Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Institute of Immunization and Prevention, Beijing 100013, China
| | - L Lu
- Institute of Immunization and Prevention, Beijing Municipal Center for Disease Prevention and Control, Beijing Research Center for Preventive Medicine, Institute of Immunization and Prevention, Beijing 100013, China
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22
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Li G, Li J, Dong M, Zuo S. An Interference Inspection Algorithm of Limb and Hexapod Frame in the Treatment of Lower Limb Deformity. J Biomech Eng 2022; 144:1133333. [PMID: 35079773 DOI: 10.1115/1.4053400] [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: 07/21/2021] [Indexed: 11/08/2022]
Abstract
The Ortho-SUV frame is an innovative hexapod widely used in orthopedics for managing fractures and deformities. Avoidance of limb-frame interference is essential to verify the implementability of the pre-planned correction trajectory, as well as to maintain the continuity and security of the correction strategy. In this study, a novel interference inspection algorithm is developed to investigate the interaction of the limb and hexapod frame in the treatment of lower limb deformities. The algorithm is built on a minimum distance model of the cone frustum busbar and cylindrical axis using vector analysis. A pre-defined trajectory is generated by Cartesian coordinate path control. Subsequently, an interference case is performed through numerical simulation and motion simulation. The results show that the conclusion of numerical simulation and motion simulation are consistent, which prove the feasibility of the algorithm. The results also show that it is possible to identify the riskiest struts, which are prone to interfere with the limb, and the riskiest positions. The proposed algorithm can support the clinician in selecting the suitable frame configuration to avoid interference. The algorithm solves the problem that the interference can only be judged by clinical observation in the clinic.
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Affiliation(s)
- Guotong Li
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, No.100, Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Jianfeng Li
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, No.100, Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Mingjie Dong
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, No.100, Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Shiping Zuo
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, No.100, Pingleyuan, Chaoyang District, Beijing 100124, China
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23
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Li J, Zhou Y, Dong M, Rong X. Isokinetic muscle strength training strategy of an ankle rehabilitation robot based on adaptive gain and cascade PID control. IEEE Trans Cogn Dev Syst 2022. [DOI: 10.1109/tcds.2022.3145998] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Luo M, Wang X, Li AH, Luo Q, Xie H, Li MZ, Wang YT, Dong M, Zhang HR, Gong C. [Clinical characteristics of patients infected with Chlamydia pneumoniae in Beijing from 2015 to 2019]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:938-944. [PMID: 34404200 DOI: 10.3760/cma.j.cn112150-20210524-00500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To aralyze the clinical characteristics of Chlamydia pneumoniae infection in Beijing. Methods: Based on Beijing Respiratory Pathogen Surveillance System, acute respiratory infection patients were recruited from 35 different types of sentinel hospitals in Beijing. Their epidemiological and clinical data were systematically collected and clinical specimens were also obtained. Nuclear acid testing was performed for 30 types of respiratory pathogens (including Chlamydia pneumoniae). The identified patients of Chlamydia pneumoniae infection were divided into two groups, the acute upper respiratory tract infection (AURI) group and pneumoniae group. The differences in clinical characteristics, laboratory examination and prognosis were compared by using independent sample t test, Mann-Whitney U test, χ2 test or Fisher's exact probability test. Results: A total of 119 patients of Chlamydia pneumoniae infection were included, including 12 patients in the AURI group and 107 patients in pneumoniae group. Chlamydia pneumoniae infection mainly occurred in people aged from 5 to 44 years, accounting for 81.5% (97/119). The three most common clinical symptoms were cough (92.4%, 110/119), fever (88.8%, 95/107), and sputum production (76.5%, 91/119). White blood cell counts increased in 39.3% (46/117) of patients. Neutrophile granulocyte proportion increased in 39.7% (46/116) of patients. Platelet count increased in 36.9% (41/111) of patients. An increase of the creatine kinase MB isoenzyme (CKMB) was observed in 12 pneumonia patients (24.5%, 12/49). Radiological examination showed that 90.6% (87/105) of patients in the pneumoniae group had pulmonary parenchymal changes; the lesion occurred most commonly in the lower right lung lobe (34.3%, 36/105) and the lower left lung lobe (27.6%, 29/105). Although 73.8% (79/107) of patients in the pneumoniae group were hospitalized, no case received intensive care unit or mechanical ventilation. As to outcomes, one patient developed respiratory failure and 6 patients suffered myocardial injury. No death was observed in this study. The median days of hospitalization and course of illness for pneumonia patients M(P25,P75) were 10.0 (7.0, 13.0) days and 18.0 (13.5, 22.0) days, respectively. Conclusion: Generally, Chlamydia pneumoniae infections in Beijing from 2015 to 2019 were mild, and the main clinical manifestations were cough, fever and sputum. However, most patients in the pneumoniae group caused by Chlamydia pneumoniae still required hospitalization but with a better outcome.
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Affiliation(s)
- M Luo
- Department of Immunization, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine,Beijing 100013, China
| | - X Wang
- Department of Immunization, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine,Beijing 100013, China
| | - A H Li
- Department of Immunization, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine,Beijing 100013, China
| | - Q Luo
- School of Public Health of Capital Medical University,Beijing 100069,China
| | - H Xie
- Department of Immunization, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine,Beijing 100013, China
| | - M Z Li
- Department of Immunization, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine,Beijing 100013, China
| | - Y T Wang
- Department of Immunization, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine,Beijing 100013, China
| | - M Dong
- Department of Immunization, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine,Beijing 100013, China
| | - H R Zhang
- Department of Immunization, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine,Beijing 100013, China
| | - C Gong
- Department of Immunization, Beijing Center for Disease Prevention and Control/Beijing Research Center for Preventive Medicine,Beijing 100013, China
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Yang J, Wang H, Zhang J, Xu W, Weng W, Lv S, Dong M. Sestamibi Single-Positron Emission Computed Tomography/Diagnostic-quality Computed Tomography for the localization of abnormal parathyroid glands in patients with primary hyperparathyroidism: What clinicopathologic factors affect its accuracy? J Endocrinol Invest 2021; 44:1649-1658. [PMID: 33393058 DOI: 10.1007/s40618-020-01471-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 09/17/2020] [Accepted: 11/18/2020] [Indexed: 02/07/2023]
Abstract
PURPOSE Sestamibi Single-Positron Emission Computed Tomography/Diagnostic-quality Computed Tomography (MIBI-SPECT/CT) is a common technology used for primary hyperparathyroidism (PHPT) localization in clinical practice. However, the clinicopathologic factors affecting the accuracy of MIBI-SPECT/CT and the potential limitations remain unclear. METHODS Retrospectively enrolled PHPT patients (n = 280) were analyzed from August 2017 to December 2019. RESULTS Of 96 patients with PHPT (mean age, 54 years; 63 females), 17 had discordance between MIBI-SPECT/CT and intraoperative findings. Among the 17 patients with discordance, 58.8% had major discordance, which occurred in most patients with multigland disease (MGD). Compared with concordant patients, discordant patients exhibited increased frequencies of autoimmune thyroid disease (29.4% vs 10.1%, p = 0.035), MDG (41.2% vs 3.8%, p = 0.035), higher PTH (296 pg/mL vs 146 pg/mL; p = 0.012),and lower phosphorus levels (0.77 mmol/L vs 0.90 mmol/L; p = 0.024). MDG (odds ratio [OR], 16.95; 95% CI 2.10-142.86), parathyroid lesion size of 12 mm or less (OR, 6.93; 95% CI 1.41-34.10), and a PTH level higher than 192.5 pg/mL (OR, 12.66; 95% CI 2.17-71.43) were independently associated with discordant MIBI-SPECT/CT results. CONCLUSION MGD was most strongly associated with discordance between MIBI-SPECT/CT and intraoperative findings followed by a PTH level higher than 192.5 pg/mL and parathyroid lesion size of 12 mm or less. Surgeons should recognize these potential limitations, which may improve the preoperative procedure by encouraging further localization imaging and promptly facilitate intraoperative troubleshooting.
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Affiliation(s)
- J Yang
- Department of Nuclear Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, #79 Qingchun Road, Hangzhou, 310003, Zhejiang Province, People's Republic of China
| | - H Wang
- Department of Surgical Oncology, The First Affiliated Hospital, Zhejiang University School of Medicine, 310003, Hangzhou, People's Republic of China
| | - J Zhang
- Department of Nuclear Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, #79 Qingchun Road, Hangzhou, 310003, Zhejiang Province, People's Republic of China
| | - W Xu
- Department of Endocrinology, The First Affiliated Hospital, Zhejiang University School of Medicine, 310003, Hangzhou, People's Republic of China
| | - W Weng
- Department of Nuclear Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, #79 Qingchun Road, Hangzhou, 310003, Zhejiang Province, People's Republic of China
| | - S Lv
- Department of Radiology, The First Affiliated Hospital, Zhejiang University School of Medicine, 310003, Hangzhou, People's Republic of China
| | - M Dong
- Department of Nuclear Medicine, The First Affiliated Hospital, Zhejiang University School of Medicine, #79 Qingchun Road, Hangzhou, 310003, Zhejiang Province, People's Republic of China.
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Yang D, Gu X, Li C, Shi J, Chen Y, Dong M, Zhang Z. BCL7B is a potential novel diagnosis and prognosis biomarker for sarcomas using bioinformatics analysis. Medicine (Baltimore) 2021; 100:e26632. [PMID: 34260555 PMCID: PMC8284715 DOI: 10.1097/md.0000000000026632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 06/23/2021] [Indexed: 01/04/2023] Open
Abstract
BCL7B plays a potential role in the progression of various cancers, while its role in sarcomas is unknown. We aimed to evaluate BCL7B's diagnostic and prognostic value, and potential BCL7B-related mechanisms in sarcomas based on The Cancer Genome Atlas (TCGA) database. We collected patients with sarcoma from TCGA. Wilcoxon rank sum test was used to compare the expression of BCL7B in sarcoma samples with different clinical-pathologic features. Univariate Cox regression analysis and multivariate Cox regression analysis were used to evaluate prognosis factors for sarcoma. Gene set enrichment analysis (GSEA) was conducted to elucidate the significant functions and pathways associated with BCL7B. BCL7B was a potential biomarker for distinguishing normal and tumor tissues with the analysis of ROC curve (AUC = 0.588). Low BCL7B expression was significantly correlated with tumor multifocal (OR = 0.39 for yes vs no), larger residual tumor (OR = 0.40 for R1,R2 vs RO), male gender (OR = 0.48 for male vs female) and White race (OR = 0.29 for White vs Asian, Black or African American). High BCL7B expression was correlated with leiomyosarcoma histological type (OR = 6.08 for leiomyosarcoma vs dedifferentiated liposarcoma, pleomorphic sarcoma). Univariate and multivariate Cox regression analysis showed that low BCL7B expression was independently associated with poor overall survival (P = .008). GSEA showed that GPCR (G protein-coupled receptors) ligand binding, secreted factors, class A1 rhodopsin-like receptors, extracellular matrix organization, core matrisome, Fc epsilon receptor I mediated NF-κB activation, and WNT signaling pathway were differentially enriched in BCL7B low expression phenotype (|NES| > 1, adjusted P value <.05, and FDR value <0.25). BCL7B may play an important role in sarcoma progression and may be a potential biomarker for prognosis and diagnosis in sarcomas.
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Affiliation(s)
- Dinglong Yang
- Second Clinical Medical College, Shanxi Medical University, China
| | - Xiaodong Gu
- Department of Orthopedics, Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Chunjiang Li
- Department of Orthopedics, Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Junjun Shi
- Department of Orthopedics, Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Yujing Chen
- School of Public Health, Xi’an Jiaotong University, Xian, Shaanxi, China
| | - Mingjie Dong
- Second Clinical Medical College, Shanxi Medical University, China
| | - Zhiqiang Zhang
- Department of Orthopedics, Second Hospital of Shanxi Medical University, Taiyuan, China
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Tabassum N, Wang J, Ferguson M, Herz J, Dong M, Louveau A, Kipnis J, Acton ST. Image segmentation for neuroscience: lymphatics. J Phys Photonics 2021. [DOI: 10.1088/2515-7647/ac050e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
A recent discovery in neuroscience prompts the need for innovation in image analysis. Neuroscientists have discovered the existence of meningeal lymphatic vessels in the brain and have shown their importance in preventing cognitive decline in mouse models of Alzheimer’s disease. With age, lymphatic vessels narrow and poorly drain cerebrospinal fluid, leading to plaque accumulation, a marker for Alzheimer’s disease. The detection of vessel boundaries and width are performed by hand in current practice and thereby suffer from high error rates and potential observer bias. The existing vessel segmentation methods are dependent on user-defined initialization, which is time-consuming and difficult to achieve in practice due to high amounts of background clutter and noise. This work proposes a level set segmentation method featuring hierarchical matting, LyMPhi, to predetermine foreground and background regions. The level set force field is modulated by the foreground information computed by matting, while also constraining the segmentation contour to be smooth. Segmentation output from this method has a higher overall Dice coefficient and boundary F1-score compared to that of competing algorithms. The algorithms are tested on real and synthetic data generated by our novel shape deformation based approach. LyMPhi is also shown to be more stable under different initial conditions as compared to existing level set segmentation methods. Finally, statistical analysis on manual segmentation is performed to prove the variation and disagreement between three annotators.
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Li G, Li J, Zuo S, Dong M. Influence of parameter deviation on the closeness of the tibial limb and external fixator based on a novel collision detection algorithm. Int J Numer Method Biomed Eng 2021; 37:e3502. [PMID: 34114336 DOI: 10.1002/cnm.3502] [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] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 04/21/2021] [Accepted: 06/04/2021] [Indexed: 06/12/2023]
Abstract
The Ortho-SUV frame (OSF) is a hexapod external fixator widely applied in orthopedics deformity correction. The possibility of collision between OSF's struts and the soft tissue is an essential but overlooked issue. To avoid the issue, a novel collision detection algorithm is established based on a cone-cylinder model of the tibial limb-strut interaction for detecting the closeness of the tibial limb and external fixator. The algorithm is constructed using the vector analysis based on the model of the minimum distance between the truncated cone generatrix and the cylinder axis. The motion simulation is performed on the overall alignment through the Solidworks-motion module to verify the feasibility of the algorithm. Subsequently, the installation parameter deviations of the bone-fixator system are described to investigate the influence of orientation and position deviation on the closeness of the tibial limb and external fixator through the numerical method. The investigation results show that the orientation deviation γ (around the z-axis), the position deviation τ1 and τ2 (along the x and y-axes, respectively) have greater sensitivity to closeness and the influence of multiple deviations on the closeness has the property of superposition. The proposed algorithm can assist clinicians to strictly design and appraise frame configurations prior to their application to avoid the collision between the external fixator and the limbs during the correction. It has great application significance in the development of computer-aided correction software.
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Affiliation(s)
- Guotong Li
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, PR China
| | - Jianfeng Li
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, PR China
| | - Shiping Zuo
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, PR China
| | - Mingjie Dong
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, PR China
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Li XL, Zhang L, Hou B, Piao SF, Tang Q, Dong M, Liu SG, Cao CX. [Expression of lncRNA MIR210HG in preeclampsia placental tissue and its functional analysis]. Zhonghua Fu Chan Ke Za Zhi 2021; 56:425-433. [PMID: 34154318 DOI: 10.3760/cma.j.cn112141-20210118-00029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the differential expression of long non-coding RNA (lncRNA) in placental tissues of women with preeclampsia (PE) and the effect of MIR210HG on the biological function of HTR8/SVneo cells. Methods: A total of 39 cases of PE women (PE group) and 39 cases of normal pregnant women (CTL group) admitted to the Affiliated Hospital of Qingdao University from July 2018 to July 2019 were collected. (1) Transcriptome sequencing (RNA-seq) was used to analyze the differentially expressed lncRNAs in the placental tissues of the two groups. (2) The expression level of MIR210HG, one of the differentially expressed lncRNAs, in the placental tissues of the two groups was detected by real-time quantitative PCR. And the correlations between the expression level of MIR210HG and systolic blood pressure, diastolic blood pressure and neonatal birth weight were analyzed. (3) The constructed small interfering RNA and negative control (NC) RNA were transfected into the HTR8/SVneo cells. The cells were divided into MIR210HG knockdown (KD) group and NC group. The effects of living cell counting (CCK-8) and transwell assay on the proliferation and migration of HTR8/SVneo cells were detected. (4) RNA interacting with MIR210HG was predicted using the Encyclopedia of RNA Interactomes (ENCORI) database. Gene Ontology (GO) functional annotation, Kyoto Encyclopedia of Gene and Genomes (KEGG) and BioCarta pathway enrichment analysis were performed. Results: (1) A total of 26 significantly differentially expressed lncRNAs were found by RNA-seq, among which 21 lncRNAs were up-regulated and 5 lncRNAs were down-regulated. (2) The relative expression level of MIR210HG in the PE group was significantly higher than that in the CTL group (9.30±1.90 and 1.10±0.20, respectively; t=4.425, P<0.01). The relative expression level of MIR210HG had positive linear correlation with systolic blood pressure (r2=0.234, P<0.05) and diastolic blood pressure (r2=0.190, P<0.05), but had a negative linear correlation with newborn birth weight (r2=0.157, P<0.05). (3) Compared with the NC group, the proliferation and migration ability of HTR8/SVneo cells in the KD group were increased (all P<0.05). (4) A total of 38 RNAs that might interact with MIR210HG were predicted by ENCORI database. GO functional annotation analysis showed that MIR210HG might be involved in the functions of 27 pathways, including the regulation of production of molecular mediator of immune response, etc; KEGG pathway analysis showed that MIR210HG might be involved in the function of 8 pathways including allograft rejection, etc; Biocarta pathway analysis showed that MIR210HG may be involved in the functions of 8 pathways, including the eukaryotic initiation factor (eIF) pathway, etc. Conclusion: The expression of MIR210HG is up-regulated in the placental tissue of PE women, and MIR210HG might be a regulator of the biological behavior of trophoblast cells.
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Affiliation(s)
- X L Li
- Department of Endocrinology and Metabolism, Medical College of Qingdao University, Qingdao 266003, China
| | - L Zhang
- Prenatal Diagnosis Center and Medical Genetic Department, the Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - B Hou
- Department of Cardiology, the Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - S F Piao
- Department of Obstetrics, the Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - Q Tang
- Prenatal Diagnosis Center and Medical Genetic Department, the Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - M Dong
- Qingdao International Travel Health Care Center, Qingdao 266071, China
| | - S G Liu
- Prenatal Diagnosis Center and Medical Genetic Department, the Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - C X Cao
- Department of Geriatrics, the Affiliated Hospital of Qingdao University, Qingdao 266003, China
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Liu WQ, Bai R, Ma CL, Yu F, Xie B, Dong M, Ha J, Wen D. Metabolomics Changes of Serum and Tissues in Mice Died of Acute Tetracaine Poisoning. Fa Yi Xue Za Zhi 2021; 37:166-174. [PMID: 34142476 DOI: 10.12116/j.issn.1004-5619.2020.401006] [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] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Indexed: 11/30/2022]
Abstract
Abstract Objective To study the changes of metabolites in serum and tissues (kidney, liver and heart) of mice died of acute tetracaine poisoning by metabolomics, to search for potential biomarkers and related metabolic pathways, and to provide new ideas for the identification of cause of death and research on toxicological mechanism of acute tetracaine poisoning. Methods Forty ICR mice were randomly divided into control group and acute tetracaine poisoning death group. The model of death from acute poisoning was established by intraperitoneal injection of tetracaine, and the metabolic profile of serum and tissues of mice was obtained by ultra-high performance liquid chromatography-electrostatic field orbitrap high resolution mass spectrometry (UPLC-Orbitrap HRMS). Multivariate statistical principal component analysis (PCA) and orthogonal partial least square-discriminant analysis (OPLS-DA) were used, combined with t-test and fold change to identify the differential metabolites associated with death from acute tetracaine poisoning. Results Compared with the control group, the metabolic profiles of serum and tissues in the mice from acute tetracaine poisoning death group were significantly different. Eleven differential metabolites were identified in serum, including xanthine, spermine, 3-hydroxybutylamine, etc.; twenty-five differential metabolites were identified in liver, including adenylate, adenosine, citric acid, etc.; twelve differential metabolites were identified in heart, including hypoxanthine, guanine, guanosine, etc; four differential metabolites were identified in kidney, including taurochenodeoxycholic acid, 11, 12-epoxyeicosatrienoic acid, dimethylethanolamine and indole. Acute tetracaine poisoning mainly affected purine metabolism, tricarboxylic acid cycle, as well as metabolism of alanine, aspartic acid and glutamic acid. Conclusion The differential metabolites in serum and tissues of mice died of acute tetracaine poisoning are expected to be candidate biomarkers for this cause of death. The results can provide research basis for the mechanism and identification of acute tetracaine poisoning.
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Affiliation(s)
- W Q Liu
- Forensic Identification Center of Hebei Medical University, Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Key Laboratory of Forensic Medicine, College of Forensic Medicine, Hebei Medical University, Shijiazhuang 050017, China.,School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - R Bai
- Forensic Identification Center of Hebei Medical University, Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Key Laboratory of Forensic Medicine, College of Forensic Medicine, Hebei Medical University, Shijiazhuang 050017, China
| | - C L Ma
- Forensic Identification Center of Hebei Medical University, Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Key Laboratory of Forensic Medicine, College of Forensic Medicine, Hebei Medical University, Shijiazhuang 050017, China
| | - F Yu
- Forensic Identification Center of Hebei Medical University, Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Key Laboratory of Forensic Medicine, College of Forensic Medicine, Hebei Medical University, Shijiazhuang 050017, China
| | - B Xie
- Forensic Identification Center of Hebei Medical University, Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Key Laboratory of Forensic Medicine, College of Forensic Medicine, Hebei Medical University, Shijiazhuang 050017, China
| | - M Dong
- Forensic Identification Center of Hebei Medical University, Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Key Laboratory of Forensic Medicine, College of Forensic Medicine, Hebei Medical University, Shijiazhuang 050017, China
| | - J Ha
- School of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
| | - D Wen
- Forensic Identification Center of Hebei Medical University, Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Key Laboratory of Forensic Medicine, College of Forensic Medicine, Hebei Medical University, Shijiazhuang 050017, China
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Zhou R, Zhang X, Huang L, Zhu X, Dong M, Liu W, Wang S, Liu F. Association between serum estradiol levels prior to progesterone administration in artificial frozen-thawed blastocyst transfer cycles and live birth rate: a retrospective study. BJOG 2021; 128:2092-2100. [PMID: 34047447 DOI: 10.1111/1471-0528.16777] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/23/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To study whether serum estradiol (E2) levels prior to progesterone administration in the artificial endometrial preparation (AEP) of frozen-thawed blastocyst transfer affect the live birth rate. DESIGN Retrospective cohort study. SETTING Tertiary-care academic medical centre. POPULATION A total of 3857 frozen-thawed blastocyst transfer cycles were divided into three groups: <200 pg/ml (n = 1676); 200-399 pg/ml (n = 1296); and ≥400 pg/ml (n = 885), based on the 25th (182.3 pg/ml) and 75th percentile (390.2 pg/ml) of serum E2 level prior to progesterone administration. METHODS Univariable and multivariable logistic regression analysis was performed. MAIN OUTCOME MEASURES The primary outcome of the study was the live birth rate and the secondary outcomes included clinical pregnancy rate, pregnancy loss rate, neonatal birthweight, Z-score, and small for gestational age (SGA). RESULTS Compared with the reference group, accounting for major covariates, the live birth rate significantly decreased in the '≥400 pg/ml' group (adjusted OR 0.71, 95% CI 0.59-0.85). Compared with the reference group, there was an association between the E2 level in the '≥400 pg/ml' group and a decrease in the clinical pregnancy rate (adjusted OR 0.74, 95% CI 0.61-0.89). Compared with the reference group, the pregnancy loss rate significantly increased in the '≥400 pg/ml' group (adjusted OR 1.45, 95% CI 1.08-1.93). The E2 levels did not affect neonatal birthweight, Z-score, and SGA among singletons. CONCLUSIONS High serum E2 levels prior to progesterone administration in AEP are associated with a decreased live birth rate after frozen-thawed blastocyst transfer. TWEETABLE ABSTRACT High serum E2 levels prior to progesterone administration in artificial FET are associated with a decreased live birth rate after frozen-thawed blastocyst transfer.
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Affiliation(s)
- R Zhou
- Center for Reproductive Medicine, Guangdong Women and Children Hospital, Guangzhou, Guangdong Province, China
| | - X Zhang
- Center for Reproductive Medicine, Guangdong Women and Children Hospital, Guangzhou, Guangdong Province, China
| | - L Huang
- Center for Reproductive Medicine, Guangdong Women and Children Hospital, Guangzhou, Guangdong Province, China
| | - X Zhu
- Center for Reproductive Medicine, Guangdong Women and Children Hospital, Guangzhou, Guangdong Province, China
| | - M Dong
- Center for Reproductive Medicine, Guangdong Women and Children Hospital, Guangzhou, Guangdong Province, China
| | - W Liu
- Center for Reproductive Medicine, Guangdong Women and Children Hospital, Guangzhou, Guangdong Province, China
| | - S Wang
- Center for Reproductive Medicine, Guangdong Women and Children Hospital, Guangzhou, Guangdong Province, China
| | - F Liu
- Center for Reproductive Medicine, Guangdong Women and Children Hospital, Guangzhou, Guangdong Province, China
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Jiang J, Wu RH, Zhou HL, Li ZM, Kou D, Deng Z, Dong M, Chen LH. TGIF2 promotes cervical cancer metastasis by negatively regulating FCMR. Eur Rev Med Pharmacol Sci 2021; 24:5953-5962. [PMID: 32572908 DOI: 10.26355/eurrev_202006_21488] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE We aimed at studying the correlation between TGIF2 expression and clinicopathological features of cervical cancer (CCa). The relationship between TGIF2 and FCMR and its influence on the proliferation and metastasis of tumor cells were investigated using molecular biology techniques, so as to reveal the pathogenesis of CCa and provide a new target for clinical treatment. PATIENTS AND METHODS TGIF2 expression in 60 pairs of cervical tumors and paracancerous tissues samples collected from CCa patients of our hospital was studied by quantitative real-time polymerase chain reaction (qPCR) analysis, and the association between TGIF2 expression and the clinical indicators or prognosis of CCa patients were analyzed. CCa cells with TGIF2 knockdown were constructed using transfection technology. Changes in the biological phenotypes (proliferation, migration, invasion) of CCa cells C33-A and HeLa after TGIF2 knockdown were determined by Cell Counting Kit-8 (CCK-8) and transwell assays. In addition, the effects of TGIF2/FCMR axis on CCa metastasis were further explored in nude mice in vivo. RESULTS Our data revealed a significant increase in TGIF2 mRNA expression in CCa tissue specimens compared to adjacent ones, and the increasing degree was positively correlated with the incidence of lymph node or distant metastasis of CCa patients. The results of CCK-8 and transwell suggested that knocking down TGIF2 effectively attenuated the proliferative ability and invasiveness of CCa cells. Luciferase assay confirmed that TGIF2 can directly bind to the DNA promoter of its target gene FCMR. Simultaneous transfection of sh-TGIF2 and sh-FCMR partially reversed the inhibitory effect of single transfection of TGIF2 knockdown on the malignant progression of CCa. Experiments in nude mice also suggested that TGIF2 could promote CCa tumorigenesis through the modulation of FCMR expression. CONCLUSIONS In summary, TGIF2 can promote the migration and proliferation ability of cervical cancer cells via down-regulating FCMR. Our study provides a new therapeutic target for the clinical treatment of cervical cancer.
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Affiliation(s)
- J Jiang
- Department of Gynecology, the First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China.
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Dong M, Zhou Y, Li J, Rong X, Fan W, Zhou X, Kong Y. State of the art in parallel ankle rehabilitation robot: a systematic review. J Neuroeng Rehabil 2021; 18:52. [PMID: 33743757 PMCID: PMC7981854 DOI: 10.1186/s12984-021-00845-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [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] [Received: 01/15/2020] [Accepted: 03/09/2021] [Indexed: 11/10/2022] Open
Abstract
Background The ankle joint complex (AJC) is of fundamental importance for balance, support, and propulsion. However, it is particularly susceptible to musculoskeletal and neurological injuries, especially neurological injuries such as drop foot following stroke. An important factor in ankle dysfunction is damage to the central nervous system (CNS). Correspondingly, the fundamental goal of rehabilitation training is to stimulate the reorganization and compensation of the CNS, and to promote the recovery of the motor system’s motor perception function. Therefore, an increasing number of ankle rehabilitation robots have been developed to provide long-term accurate and uniform rehabilitation training of the AJC, among which the parallel ankle rehabilitation robot (PARR) is the most studied. The aim of this study is to provide a systematic review of the state of the art in PARR technology, with consideration of the mechanism configurations, actuator types with different trajectory tracking control techniques, and rehabilitation training methods, thus facilitating the development of new and improved PARRs as a next step towards obtaining clinical proof of their rehabilitation benefits. Methods A literature search was conducted on PubMed, Scopus, IEEE Xplore, and Web of Science for articles related to the design and improvement of PARRs for ankle rehabilitation from each site’s respective inception from January 1999 to September 2020 using the keywords “ parallel”, “ ankle”, and “ robot”. Appropriate syntax using Boolean operators and wildcard symbols was utilized for each database to include a wider range of articles that may have used alternate spellings or synonyms, and the references listed in relevant publications were further screened according to the inclusion criteria and exclusion criteria. Results and discussion Ultimately, 65 articles representing 16 unique PARRs were selected for review, all of which have developed the prototypes with experiments designed to verify their usability and feasibility. From the comparison among these PARRs, we found that there are three main considerations for the mechanical design and mechanism optimization of PARRs, the choice of two actuator types including pneumatic and electrically driven control, the covering of the AJC’s motion space, and the optimization of the kinematic design, actuation design and structural design. The trajectory tracking accuracy and interactive control performance also need to be guaranteed to improve the effect of rehabilitation training and stimulate a patient’s active participation. In addition, the parameters of the reviewed 16 PARRs are summarized in detail with their differences compared by using figures and tables in the order they appeared, showing their differences in the two main actuator types, four exercise modes, fifteen control strategies, etc., which revealed the future research trends related to the improvement of the PARRs. Conclusion The selected studies showed the rapid development of PARRs in terms of their mechanical designs, control strategies, and rehabilitation training methods over the last two decades. However, the existing PARRs all have their own pros and cons, and few of the developed devices have been subjected to clinical trials. Designing a PARR with three degrees of freedom (DOFs) and whereby the mechanism’s rotation center coincides with the AJC rotation center is of vital importance in the mechanism design and optimization of PARRs. In addition, the design of actuators combining the advantages of the pneumatic-driven and electrically driven ones, as well as some new other actuators, will be a research hotspot for the development of PARRs. For the control strategy, compliance control with variable parameters should be further studied, with sEMG signal included to improve the real-time performance. Multimode rehabilitation training methods with multimodal motion intention recognition, real-time online detection and evaluation system should also be further developed to meet the needs of different ankle disability and rehabilitation stages. In addition, the clinical trials are in urgent need to help the PARRs be implementable as an intervention in clinical practice.
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Affiliation(s)
- Mingjie Dong
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, No.100, Pingleyuan, Chaoyang District, Beijing, 100124, China
| | - Yu Zhou
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, No.100, Pingleyuan, Chaoyang District, Beijing, 100124, China
| | - Jianfeng Li
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, No.100, Pingleyuan, Chaoyang District, Beijing, 100124, China.
| | - Xi Rong
- Department of Neurology, the Affiliated Hospital of Qingdao University, 59 Haier Road, Laoshan District, Qingdao, 266000, China
| | - Wenpei Fan
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, No.100, Pingleyuan, Chaoyang District, Beijing, 100124, China
| | - Xiaodong Zhou
- Beijing Institute of Control Engineering, Beijing, 100094, China
| | - Yuan Kong
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, No.100, Pingleyuan, Chaoyang District, Beijing, 100124, China
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Liu T, Li X, Liu D, Liu S, Dong M. Increased serum CA125 II, but not CEA,CA19-9,AFP or CA72-4 in colon cancer compared to rectal cancer. Br J Biomed Sci 2021; 78:218-220. [PMID: 33393429 DOI: 10.1080/09674845.2020.1868685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- T Liu
- Department of Pharmacy, Harbin Medical University Cancer Hospital, Harbin, China
| | - X Li
- Department of Pharmacy, The First Affiliated Hospital of Harbin Medical University, Harbin, China
| | - D Liu
- Department of Pharmacy, Harbin Medical University Cancer Hospital, Harbin, China
| | - S Liu
- Department of Pharmacy, Harbin Medical University Cancer Hospital, Harbin, China
| | - M Dong
- Department of Pharmacy, Harbin Medical University Cancer Hospital, Harbin, China
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Shao D, Zhao ZN, Zhang YQ, Zhou XY, Zhao LB, Dong M, Xu FH, Xiang YJ, Luo HY. Efficacy of repetitive transcranial magnetic stimulation for post-stroke depression: a systematic review and meta-analysis of randomized clinical trials. Braz J Med Biol Res 2021; 54:e10010. [PMID: 33470386 PMCID: PMC7812912 DOI: 10.1590/1414-431x202010010] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 09/16/2020] [Indexed: 11/21/2022] Open
Abstract
We aimed to conduct a meta-analysis to evaluate the efficacy of repetitive transcranial magnetic stimulation (rTMS) in patients with post-stroke depression (PSD). Six relevant electronic databases (PubMed, CENTRAL, Embase, Web of Science, CINAHL, and PsycINFO) were searched. Randomized controlled trials (RCTs) that compared rTMS with control condition for PSD were included. The mean change in depression symptom scores was defined as the primary efficacy outcome. Secondary outcomes included the remission rate of depression, stroke recovery, and cognitive function recovery. In total, 7 RCTs with 351 participants were included. At post-treatment, rTMS was significantly more effective than the control condition, with a standardized mean difference (SMD) of -1.15 (95%CI: -1.62 to -0.69; P<0.001, I2=71%) and remission with an odds ratio (OR) of 3.46 (95%CI: 1.68 to 7.12; P<0.001; I2=11%). As for stroke recovery, rTMS was also better than the control condition (SMD=-0.67, 95%CI: -1.02 to -0.32; P<0.001). However, no significant difference was found for cognitive function recovery between the two groups (SMD=4.07, 95%CI: -1.41 to 9.55; P=0.15). To explore the potential moderators for the primary outcome, a series of subgroup and sensitivity analyses were performed. The results implied that rTMS may be more effective in Asian samples than in North American samples (P=0.03). In conclusion, from the current evidence in this study, rTMS could be an effective treatment for patients with PSD. Further clinical studies with larger sample sizes and clearer subgroup definitions are needed to confirm these outcomes.
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Affiliation(s)
- D Shao
- Department of Neurology, The Second Affiliated Hospital of Chongqing Medical University, Yuzhong District, Chongging, China
| | - Z N Zhao
- Department of Neurosurgery, The First Affiliated Hospital of Chongqing Medical and Pharmaceutical College, Chongqing, China
| | - Y Q Zhang
- Department of Neurology, The Second Affiliated Hospital of Chongqing Medical University, Yuzhong District, Chongging, China
| | - X Y Zhou
- Department of Psychiatry, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - L B Zhao
- Department of Neurology, Yongchuan Hospital of Chongqing Medical University, Chongqing, China
| | - M Dong
- Department of Neurology, The Second Affiliated Hospital of Chongqing Medical University, Yuzhong District, Chongging, China
| | - F H Xu
- Department of Neurology, The Second Affiliated Hospital of Chongqing Medical University, Yuzhong District, Chongging, China
| | - Y J Xiang
- Department of Psychiatry, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - H Y Luo
- Department of Neurology, The Second Affiliated Hospital of Chongqing Medical University, Yuzhong District, Chongging, China
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Li J, Li G, Dong M, Chen Y, Zuo S. Comparison of three different correction trajectories for foot and ankle deformity treated by supramalleolar osteotomy using a novel external fixator. Int J Numer Method Biomed Eng 2020; 36:e3400. [PMID: 32889768 DOI: 10.1002/cnm.3400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 07/12/2020] [Accepted: 08/25/2020] [Indexed: 06/11/2023]
Abstract
Based on the principle of distraction osteogenesis, external fixators are widely used in deformity correction of the foot and ankle. In this study, a novel ankle external fixator is proposed to correct complex multiplane deformities, especially for supramalleolar osteotomy to correct distal tibia deformities. The relatively simple structure and fewer struts in the proposed fixator reduce the complexity of adjusting the external fixator. Based on two existing adjustment strategies, a new strategy taking into account the orientation and shortest path of the ankle joint center is proposed, which is named joint adjustment for equal bone distraction. By proposing the inverse kinematic solutions of the novel external fixator, mathematical derivations of the bone trajectory and modelling of the bone shape for the three distraction strategies are performed. The results obtained by comparative analysis indicate that a uniformly spaced path of the ankle joint center can be acquired, and a smooth and uniform correction trajectory of the distal tibia end can be obtained using the new adjustment strategy. It can avoid bone end interference and only generates a maximum deviation 0.66% greater than the currently optimal 1 mm/day. The new strategy can perform multiplane corrections simultaneously, which shortens the correction time and reduces the patient's pain.
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Affiliation(s)
- Jianfeng Li
- College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China
| | - Guotong Li
- College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China
| | - Mingjie Dong
- College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China
| | - Ying Chen
- College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China
| | - Shiping Zuo
- College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China
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Li J, Li G, Hu X, Dong M, Tao C, Ji R, Chen Y. Investigation of Correction Trajectory Considering Bone End-Plane Orientation and the Shortest Growth Path. J Biomech Eng 2020; 142:1083897. [PMID: 32440677 DOI: 10.1115/1.4047260] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 05/04/2019] [Indexed: 11/08/2022]
Abstract
External fixators are widely used in orthopedics for the purposes of fracture reduction and bone deformity correction. Since there is nonlinear mapping between the joint and operation spaces of the external fixator, bone correction trajectories achieved by equally adjusting the length of the struts in the joint space are usually not the trajectories that clinicians expect. Based on two different adjustment strategies, a new strategy considering bone end-plane orientation and the shortest growth path is proposed to plan the position and orientation of the distal bone end, which is named joint adjustment for equal bone distraction. By proposing the inverse and forward kinematic solutions of an Ortho-SUV external fixator, correction trajectories with three different adjustment strategies are generated and compared, and the bone shapes for each strategy are modeled. The results obtained by comparative analysis indicate that a smooth and uniformly spaced linear trajectory can be acquired using the new adjustment strategy, which can avoid bone end interference and maintain an optimal distraction rate of 1.03 mm/day, with only a 3% error compared with 1 mm/day. The new strategy can perform multiplane corrections simultaneously and is beneficial for stimulating the growth of new bone tissue.
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Affiliation(s)
- Jianfeng Li
- College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, No. 100, Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Guotong Li
- College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, No. 100, Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Xiaojie Hu
- College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, No. 100, Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Mingjie Dong
- College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, No. 100, Pingleyuan, Chaoyang District, Beijing 100124, China
| | - Chunjing Tao
- National Research Center for Rehabilitation Technical Aids, No. 1 Ronghua Middle Road, Daxing District, Beijing 100176, China
| | - Run Ji
- National Research Center for Rehabilitation Technical Aids, No. 1 Ronghua Middle Road, Daxing District, Beijing 100176, China
| | - Ying Chen
- College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, No. 100, Pingleyuan, Chaoyang District, Beijing 100124, China
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Xie B, Yan WJ, Meng XY, Miao XG, Yu F, Dong M, Shi Y, Xiang P, Ma CL, Wen D. [Influence of Halogenated Hydroxyl-Alkanes Inhalation Anesthetic on the Determination of Ethanol Content in Blood]. Fa Yi Xue Za Zhi 2020; 36:682-687. [PMID: 33295171 DOI: 10.12116/j.issn.1004-5619.2020.05.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Indexed: 06/12/2023]
Abstract
Objective To study the influence of halogenated hydroxyl-alkanes inhalation anesthetic on the determination of ethanol content in blood. Methods Halogenated hydroxyl-alkanes were analyzed by headspace gas chromatography with double column confirmatory detection method. The influence of halogenated hydroxyl-alkanes on determination of ethanol content in blood sample by headspace gas chromatography was explored under the different detection conditions of KB-BAC1/ KB-BAC2 and J&W DB-ALC1/DB-ALC2 gas chromatographic column. Results The retention time of sevoflurane and enflurane was similar to that of ethanol and tert butanol respectively when using the J&W DB-ALC1/DB-ALC2 gas chromatographic column, and interfered with the detection of ethanol content in blood; only J&W DB-ALC1 gas chromatographic column can separate the sevoflurane and ethanol components, so as to eliminate their influence on the detection of ethanol content in blood. When using KB-BAC1/KB-BAC2 gas chromatographic column, the retention time of sevoflurane, isoflurane and ethanol is similar, especially that of sevoflurane and ethanol, and sevoflurane obviously interferes with the determination of ethanol content in blood. Conclusion Halogenated hydroxy-alkanes interfere with determination of ethanol content in blood by headspace gas chromatography. The interference can be discriminated effectively by choosing the suitable chromatographic column and double column confirmatory detection.
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Affiliation(s)
- B Xie
- Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Key Laboratory of Forensic Medicine, College of Forensic Medicine, Hebei Medical University, Shijiazhuang 050017, China
| | - W J Yan
- Huanghua Forensic Identification Center, Huanghua 061100, Hebei Province, China
| | - X Y Meng
- Shijiazhuang Public Transportation Administration Bureau, Shijiazhuang 050091, China
| | - X G Miao
- Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Key Laboratory of Forensic Medicine, College of Forensic Medicine, Hebei Medical University, Shijiazhuang 050017, China
| | - F Yu
- Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Key Laboratory of Forensic Medicine, College of Forensic Medicine, Hebei Medical University, Shijiazhuang 050017, China
| | - M Dong
- Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Key Laboratory of Forensic Medicine, College of Forensic Medicine, Hebei Medical University, Shijiazhuang 050017, China
| | - Y Shi
- Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - P Xiang
- Shanghai Key Laboratory of Forensic Medicine, Key Laboratory of Forensic Science, Ministry of Justice, Shanghai Forensic Service Platform, Academy of Forensic Science, Shanghai 200063, China
| | - C L Ma
- Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Key Laboratory of Forensic Medicine, College of Forensic Medicine, Hebei Medical University, Shijiazhuang 050017, China
| | - D Wen
- Collaborative Innovation Center of Forensic Medical Molecular Identification, Hebei Key Laboratory of Forensic Medicine, College of Forensic Medicine, Hebei Medical University, Shijiazhuang 050017, China
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Abstract
Wearable sensing devices, which are smart electronic devices that can be worn on the body as implants or accessories, have attracted much research interest in recent years. They are rapidly advancing in terms of technology, functionality, size, and real-time applications along with the fast development of manufacturing technologies and sensor technologies. By covering some of the most important technologies and algorithms of wearable devices, this paper is intended to provide an overview of upper-limb wearable device research and to explore future research trends. The review of the state-of-the-art of upper-limb wearable technologies involving wearable design, sensor technologies, wearable computing algorithms and wearable applications is presented along with a summary of their advantages and disadvantages. Toward the end of this paper, we highlight areas of future research potential. It is our goal that this review will guide future researchers to develop better wearable sensing devices for upper limbs.
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Affiliation(s)
- Mingjie Dong
- Beijing University of Technology, Beijing, China
| | - Bin Fang
- Tsinghua University, Beijing, China
| | - Jianfeng Li
- Beijing University of Technology, Beijing, China
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Jia Y, Liu Y, Zhang C, Chen Z, Dong M. PMD4 Analysis of Costs, Length of Hospital STAY (LOS), Readmission and Quality of Life in Patients Undergoing Primary TOTAL Knee Arthroplasty (TKA) from China ATTUNE® Study. Value Health Reg Issues 2020. [DOI: 10.1016/j.vhri.2020.07.310] [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: 11/25/2022]
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Affiliation(s)
- Jianfeng Li
- College of Mechanical Engineering and Applied Electronics TechnologyBeijing University of TechnologyBeijing100124People's Republic of China
| | - Wenpei Fan
- College of Mechanical Engineering and Applied Electronics TechnologyBeijing University of TechnologyBeijing100124People's Republic of China
| | - Mingjie Dong
- College of Mechanical Engineering and Applied Electronics TechnologyBeijing University of TechnologyBeijing100124People's Republic of China
| | - Xi Rong
- Department of NeurologyAffiliated Hospital of Qingdao UniversityQingdao266000People's Republic of China
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Fu J, Sun H, Wei H, Dong M, Zhang Y, Xu W, Fang Y, Zhao J. Astaxanthin alleviates spinal cord ischemia-reperfusion injury via activation of PI3K/Akt/GSK-3β pathway in rats. J Orthop Surg Res 2020; 15:275. [PMID: 32703256 PMCID: PMC7376638 DOI: 10.1186/s13018-020-01790-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 07/09/2020] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Ischemia-reperfusion injury of the spinal cord (SCII) often leads to unalterable neurological deficits, which may be associated with apoptosis induced by oxidative stress and inflammation. Astaxanthin (AST) is a strong antioxidant and anti-inflammatory agent with multitarget neuroprotective effects. This study aimed to investigate the potential therapeutic effects of AST for SCII and the molecular mechanism. METHODS Rat models of SCII with abdominal aortic occlusion for 40 min were carried out to investigate the effects of AST on the recovery of SCII. Tarlov's scores were used to assess the neuronal function; HE and TUNEL staining were used to observe the pathological morphology of lesions. Neuron oxidative stress and inflammation were measured using commercial detection kits. Flow cytometry was conducted to assess the mitochondrial swelling degree. Besides, Western blot assay was used to detect the expression of PI3K/Akt/GSK-3β pathway-related proteins, as well as NOX2 and NLRP3 proteins. RESULTS The results demonstrated that AST pretreatment promoted the hind limb motor function recovery and alleviated the pathological damage induced by SCII. Moreover, AST significantly enhanced the antioxidative stress response and attenuated mitochondrial swelling. However, AST pretreatment hardly inhibited the levels of proinflammatory cytokines after SCII. Most importantly, AST activated p-Akt and p-GSK-3β expression levels. Meanwhile, cotreatment with LY294002 (a PI3K inhibitor) was found to abolish the above protective effects observed with the AST pretreatment. CONCLUSION Overall, these results suggest that AST pretreatment not only mitigates pathological tissue damage but also effectively improves neural functional recovery following SCII, primarily by alleviating oxidative stress but not inhibiting inflammation. A possible underlying molecular mechanism of AST may be mainly attributed to the activation of PI3K/Akt/GSK-3β pathway.
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Affiliation(s)
- Jian Fu
- Department of Emergency Surgery, The Second Hospital of Hebei Medical University, No.215 Heping West Road, Shijiazhuang, 050000, Hebei, China
| | - Haibin Sun
- Department of Emergency Surgery, The Second Hospital of Hebei Medical University, No.215 Heping West Road, Shijiazhuang, 050000, Hebei, China
| | - Haofei Wei
- Department of Emergency Surgery, The Second Hospital of Hebei Medical University, No.215 Heping West Road, Shijiazhuang, 050000, Hebei, China
| | - Mingjie Dong
- Department of Emergency Surgery, The Second Hospital of Hebei Medical University, No.215 Heping West Road, Shijiazhuang, 050000, Hebei, China
| | - Yongzhe Zhang
- Department of Emergency Surgery, The Second Hospital of Hebei Medical University, No.215 Heping West Road, Shijiazhuang, 050000, Hebei, China
| | - Wei Xu
- Department of Emergency Surgery, The Second Hospital of Hebei Medical University, No.215 Heping West Road, Shijiazhuang, 050000, Hebei, China
| | - Yanwei Fang
- Department of Emergency Surgery, The Second Hospital of Hebei Medical University, No.215 Heping West Road, Shijiazhuang, 050000, Hebei, China
| | - Jianhui Zhao
- Department of Emergency Surgery, The Second Hospital of Hebei Medical University, No.215 Heping West Road, Shijiazhuang, 050000, Hebei, China.
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Zhang C, Dong M, Li J, Cao Q. A Modified Kinematic Model of Shoulder Complex Based on Vicon Motion Capturing System: Generalized GH Joint with Floating Centre. Sensors (Basel) 2020; 20:E3713. [PMID: 32630828 PMCID: PMC7374450 DOI: 10.3390/s20133713] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 06/28/2020] [Accepted: 07/01/2020] [Indexed: 11/30/2022]
Abstract
Due to the complex coupling motion of shoulder mechanism, only a small amount of quantitative information is available in the existing literature, although various kinematic models of the shoulder complex have been proposed. This study focused on the specific motion coupling relationship between glenohumeral (GH) joint center displacement variable quantity relative to the thorax coordinate system and humeral elevation angle to describe the shoulder complex. The mechanism model of shoulder complex was proposed with an algorithm designed. Subsequently, twelve healthy subjects performed right arm raising, lowering, as well as raising and lowering (RAL) movements in sixteen elevation planes, and the motion information of the markers attached to the thorax, scapula, and humerus was captured by using Vicon motion capturing system. Then, experimental data was processed and the generalized GH joint with floating center was quantized. Simultaneously, different coupling characteristics were detected during humerus raising as well as lowering movements. The motion coupling relationships in different phases were acquired, and a modified kinematic model was established, with the description of overall motion characteristics of shoulder complex validated by comparing the results with a prior kinematic model from literature, showing enough accuracy for the design of upper limb rehabilitation robots.
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Affiliation(s)
| | | | - Jianfeng Li
- Beijing Key Laboratory of Advanced Manufacturing Technology, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, China; (C.Z.); (M.D.); (Q.C.)
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Harris M, El Hindy M, Usmari-Moraes M, Hudd F, Shafei M, Dong M, Hezwani M, Clark P, House M, Forshaw T, Kehoe P, Conway ME. BCAT-induced autophagy regulates Aβ load through an interdependence of redox state and PKC phosphorylation-implications in Alzheimer's disease. Free Radic Biol Med 2020; 152:755-766. [PMID: 31982508 DOI: 10.1016/j.freeradbiomed.2020.01.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 12/20/2019] [Revised: 01/16/2020] [Accepted: 01/16/2020] [Indexed: 01/09/2023]
Abstract
Leucine, nutrient signal and substrate for the branched chain aminotransferase (BCAT) activates the mechanistic target of rapamycin (mTORC1) and regulates autophagic flux, mechanisms implicated in the pathogenesis of neurodegenerative conditions such as Alzheimer's disease (AD). BCAT is upregulated in AD, where a moonlighting role, imparted through its redox-active CXXC motif, has been suggested. Here we demonstrate that the redox state of BCAT signals differential phosphorylation by protein kinase C (PKC) regulating the trafficking of cellular pools of BCAT. We show inter-dependence of BCAT expression and proteins associated with the P13K/Akt/mTORC1 and autophagy signalling pathways. In response to insulin or an increase in ROS, BCATc is trafficked to the membrane and docks via palmitoylation, which is associated with BCATc-induced autophagy through PKC phosphorylation. In response to increased levels of BCATc, as observed in AD, amyloid β (Aβ) levels accumulate due to a shift in autophagic flux. This effect was diminished when incubated with leucine, indicating that dietary levels of amino acids show promise in regulating Aβ load. Together these findings show that increased BCATc expression, reported in human AD brain, will affect autophagy and Aβ load through the interdependence of its redox-regulated phosphorylation offering a novel target to address AD pathology.
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Affiliation(s)
- M Harris
- Faculty of Health and Applied Sciences, University of the West of England, Coldharbor Lane, Bristol, BS16 1QY, UK
| | - M El Hindy
- Faculty of Health and Applied Sciences, University of the West of England, Coldharbor Lane, Bristol, BS16 1QY, UK
| | - M Usmari-Moraes
- Faculty of Health and Applied Sciences, University of the West of England, Coldharbor Lane, Bristol, BS16 1QY, UK
| | - F Hudd
- Faculty of Health and Applied Sciences, University of the West of England, Coldharbor Lane, Bristol, BS16 1QY, UK
| | - M Shafei
- Faculty of Health and Applied Sciences, University of the West of England, Coldharbor Lane, Bristol, BS16 1QY, UK
| | - M Dong
- Department of Chemistry, North Carolina Agricultural and Technical State University, Market Street, Greensboro, NC, 27411, USA
| | - M Hezwani
- Faculty of Health and Applied Sciences, University of the West of England, Coldharbor Lane, Bristol, BS16 1QY, UK
| | - P Clark
- Faculty of Health and Applied Sciences, University of the West of England, Coldharbor Lane, Bristol, BS16 1QY, UK
| | - M House
- Faculty of Health and Applied Sciences, University of the West of England, Coldharbor Lane, Bristol, BS16 1QY, UK
| | - T Forshaw
- Faculty of Health and Applied Sciences, University of the West of England, Coldharbor Lane, Bristol, BS16 1QY, UK
| | - P Kehoe
- Institute of Clinical Neurosciences, Learning and Research Building, Southmead Hospital, Bristol, United Kingdom
| | - M E Conway
- Faculty of Health and Applied Sciences, University of the West of England, Coldharbor Lane, Bristol, BS16 1QY, UK.
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Hu L, He J, Dong M, Tang X, Jiang P, Lei A, Wang J. Divergent metabolic and transcriptomic responses of Synechocystis sp. PCC 6803 to salt stress after adaptive laboratory evolution. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101856] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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46
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Zuo S, Li J, Dong M, Zhou X, Fan W, Kong Y. Design and Performance Evaluation of a Novel Wearable Parallel Mechanism for Ankle Rehabilitation. Front Neurorobot 2020; 14:9. [PMID: 32132917 PMCID: PMC7040367 DOI: 10.3389/fnbot.2020.00009] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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] [Received: 08/29/2019] [Accepted: 01/29/2020] [Indexed: 11/25/2022] Open
Abstract
Repetitive and intensive physiotherapy is indispensable to patients with ankle disabilities. Increasingly robot-assisted technology has been employed in the treatment to reduce the burden of the therapists and the related costs of the patients. This paper proposes a configuration of a wearable parallel mechanism to supplement the equipment selection for ankle rehabilitation. The kinematic analysis, i.e., the inverse position solution and Jacobian matrices, is elaborated. Several performance indices, including the reachable workspace index, motion isotropy index, force transfer index, and maximum torque index, are developed based on the derived kinematic solution. Moreover, according to the proposed kinematic configuration and wearable design concept, the mechanical structure that contains a basic machine-drive system and a multi-model position/force data collection system is designed in detail. Finally, the results of the performance evaluation indicate that the wearable parallel robot possesses sufficient motion isotropy, high force transfer performance, and large maximum torque performance within a large workspace that can cover all possible range of motion of human ankle complex, and is suitable for ankle rehabilitation.
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Affiliation(s)
- Shiping Zuo
- College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China
| | - Jianfeng Li
- College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China
| | - Mingjie Dong
- College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China
| | - Xiaodong Zhou
- Beijing Institute of Control Engineering, Beijing, China
| | - Wenpei Fan
- College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China
| | - Yuan Kong
- College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China
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Jiao R, Wang Z, Chu R, Dong M, Rong Y, Chou W. An Intuitive End-to-End Human-UAV Interaction System for Field Exploration. Front Neurorobot 2020; 13:117. [PMID: 32116632 PMCID: PMC7033451 DOI: 10.3389/fnbot.2019.00117] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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] [Received: 08/26/2019] [Accepted: 12/24/2019] [Indexed: 11/13/2022] Open
Abstract
This paper presents an intuitive end-to-end interaction system between a human and a hexacopter Unmanned Aerial Vehicle (UAV) for field exploration in which the UAV can be commanded by natural human poses. Moreover, LEDs installed on the UAV are used to communicate the state and intents of the UAV to the human as feedback throughout the interaction. A real time multi-human pose estimation system is built that can perform with low latency while maintaining competitive performance. The UAV is equipped with a robotic arm, kinematic and dynamic attitude models for which are provided by introducing the center of gravity (COG) of the vehicle. In addition, a super-twisting extended state observer (STESO)-based back-stepping controller (BSC) is constructed to estimate and attenuate complex disturbances in the attitude control system of the UAV, such as wind gusts, model uncertainties, etc. A stability analysis for the entire control system is also presented based on the Lyapunov stability theory. The pose estimation system is integrated with the proposed intelligent control architecture to command the UAV to execute an exploration task stably. Additionally, all the components of this interaction system are described. Several simulations and experiments have been conducted to demonstrate the effectiveness of the whole system and its individual components.
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Affiliation(s)
- Ran Jiao
- School of Mechanical Engineering and Automation, Beihang University, Beijing, China
| | - Zhaowei Wang
- School of Mechanical Engineering and Automation, Beihang University, Beijing, China
| | - Ruihang Chu
- School of Mechanical Engineering and Automation, Beihang University, Beijing, China
| | - Mingjie Dong
- College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing, China
| | - Yongfeng Rong
- School of Mechanical Engineering and Automation, Beihang University, Beijing, China
| | - Wusheng Chou
- School of Mechanical Engineering and Automation, Beihang University, Beijing, China.,The State Key Laboratory of Virtual Reality, Technology and Systems, Beihang University, Beijing, China
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Stehli J, Dagan M, Zaman S, Koh J, Quine E, Crawford C, Dong M, Nanayakkara S, Htun N, Stub D, Dick R, Walton A, Duffy S. 840 Impact of Sex on Outcomes Following Transcatheter Aortic Valve Implantation. Heart Lung Circ 2020. [DOI: 10.1016/j.hlc.2020.09.847] [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: 11/17/2022]
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49
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Cao WY, Dong M, Hu ZY, Wu J, Li YC, Xu HD. Recombinant Lactococcus lactis NZ3900 expressing bioactive human FGF21 reduced body weight of Db/Db mice through the activity of brown adipose tissue. Benef Microbes 2019; 11:67-78. [PMID: 32066255 DOI: 10.3920/bm2019.0093] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 11/19/2022]
Abstract
Fibroblast growth factor 21 (FGF21), a metabolism regulator, has an important effect on metabolic diseases, such as obesity and diabetes. It is also expressed in mice, and the murine source has high homology with human FGF21. Recently, it has been extensively studied and has become a potential drug target for the treatment of metabolic diseases. As it is a protein-based hormone, FGF21 cannot be easily and quickly absorbed into the blood through oral administration. Moreover, it has a 0-2 h half-life in vivo, as shown in a previous study, thus its efficacy lasts for a short period of time when used to treat metabolic diseases, limiting its clinical applications. To avoid these limitations, we used Lactococcus lactis, a food-grade bacterium, as the host to express FGF21. It could be used successfully for the expression and long-term effect of FGF21 in vivo. Instead of antibiotic resistance genes, the LacF gene was used as a selection marker in the NZ3900/PNZ8149 expression system, which is safe and could reduce the antibiotic resistance crisis. In this study, we a constructed human FGF21 expressing L. lactis strain and administered it to Db/Db mice by gavage. Compared with the control group, the body weight of mice in the experimental group was significantly reduced, and the overall homeostasis was improved in mice treated with human FGF21. Moreover, the activity of brown adipose tissue was enhanced. These results revealed that oral administration of FGF21 through heterologous expression in L. lactis appears to be an effective approach for its clinical application.
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Affiliation(s)
- W-Y Cao
- School of Pharmaceutical Sciences, Key Laboratory of State Ministry of Education, Key Laboratory of Henan province for Drug Quality Control and Evaluation, Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou University, 100 Ke xue Avenue, Zhengzhou, Henan 450001, China P.R.,Key Laboratory of Animal Ecology and Conservation Biology Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China P.R
| | - M Dong
- Key Laboratory of Animal Ecology and Conservation Biology Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China P.R.,The University of the Chinese Academy of Sciences, Beijing 100049, China P.R
| | - Z-Y Hu
- School of Pharmaceutical Sciences, Key Laboratory of State Ministry of Education, Key Laboratory of Henan province for Drug Quality Control and Evaluation, Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou University, 100 Ke xue Avenue, Zhengzhou, Henan 450001, China P.R
| | - J Wu
- School of Pharmaceutical Sciences, Key Laboratory of State Ministry of Education, Key Laboratory of Henan province for Drug Quality Control and Evaluation, Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou University, 100 Ke xue Avenue, Zhengzhou, Henan 450001, China P.R
| | - Y-C Li
- School of Pharmaceutical Sciences, Key Laboratory of State Ministry of Education, Key Laboratory of Henan province for Drug Quality Control and Evaluation, Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou University, 100 Ke xue Avenue, Zhengzhou, Henan 450001, China P.R
| | - H-D Xu
- School of Pharmaceutical Sciences, Key Laboratory of State Ministry of Education, Key Laboratory of Henan province for Drug Quality Control and Evaluation, Collaborative Innovation Center of New Drug Research and Safety Evaluation, Zhengzhou University, 100 Ke xue Avenue, Zhengzhou, Henan 450001, China P.R
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Hao JP, Shi H, Zhang J, Zhang CM, Feng YM, Qie LY, Dong M, Ji X. Role of GSPE in improving early cerebral vascular damage by inhibition of Profilin-1 expression in a ouabain-induced hypertension model. Eur Rev Med Pharmacol Sci 2019; 22:6999-7012. [PMID: 30402867 DOI: 10.26355/eurrev_201810_16171] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Grape seed proanthocyanidin extract (GSPE), as one of the most popular natural drug extracted from the grape, has been reported to improve endothelial function and arteriosclerosis. However, little is known about the influence of GSPE on hypertension and vascular remodeling. Profilin-1, an Actin-binding protein, is closely involved in the remodeling of large vessels in ouabain-induced hypertension. To date, there is no effective prevention or treatment in place for the high incidence of ischemic stroke associated with hypertension. In this study, we aimed to determine the role of GSPE via inhibition Profilin-1 in ischemic cerebral cortices of ouabain-hypertension rats and potentially provide a new target to prevent stroke associated with hypertension. MATERIALS AND METHODS The blood pressure of male Sprague-Dawley (SD) rats was measured during a period of ouabain-induced hypertension. The expression of Profilin-1, vascular endothelial growth factor (VEGF) and endothelial nitric oxide synthase (eNOS) in the cerebral cortex were determined by quantitative Real Time-PCR (qRT-PCR) and Western blot. Histopathological and behavioral tests were also conducted. RESULTS Blood pressure elevation started at week 5 and reached clinical standards for hypertension at week 8. GSPE was proved to suppress Profilin-1 and VEGF levels through inhibition of Profilin-1-protein kinase B (AKT)-hypoxia inducible factor-1α (HIF-1α) signal pathway and promote eNOS expression. Moreover, the histopathological and ethiological improvement was observed in GSPE over-expression and Profilin-1 inhibition groups. CONCLUSIONS We detected that GSPE could improve cerebral vascular damage through inhibiting Profilin-1 in an ouabain-induced hypertension model.
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Affiliation(s)
- J-P Hao
- Department of Respiratory, Qilu Hospital of Shandong University, Jinan, Shandong, China.
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