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Manoharan D, Wang LC, Chen YC, Li WP, Yeh CS. Catalytic Nanoparticles in Biomedical Applications: Exploiting Advanced Nanozymes for Therapeutics and Diagnostics. Adv Healthc Mater 2024:e2400746. [PMID: 38683107 DOI: 10.1002/adhm.202400746] [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: 02/26/2024] [Revised: 04/17/2024] [Indexed: 05/01/2024]
Abstract
Catalytic nanoparticles (CNPs) as heterogeneous catalyst reveals superior activity due to their physio-chemical features, such as high surface-to-volume ratio and unique optical, electric, and magnetic properties. The CNPs, based on their physio-chemical nature, can either increase the reactive oxygen species (ROS) level for tumor and antibacterial therapy or eliminate the ROS for cytoprotection, anti-inflammation, and anti-aging. In addition, the catalytic activity of nanozymes could specifically trigger a specific reaction accompanied by the optical feature change, presenting the feasibility of biosensor and bioimaging applications. Undoubtedly, CNPs play a pivotal role in pushing the evolution of technologies in medical and clinical fields, and advanced strategies and nanomaterials rely on the input of chemical experts to develop. Herein, we present a systematic and comprehensive review of the challenges and recent development of catalytic NPs for biomedical applications from the viewpoint of advanced nanomaterial with unique catalytic activity and additional functions. Furthermore, we critically discuss the biosafety issue of applying biodegradable and non-biodegradable nanozymes and future perspectives to guide a promising direction in developing span-new nanozymes and more intelligent strategies for overcoming the current clinical limitations. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Divinah Manoharan
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Liu-Chun Wang
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Ying-Chi Chen
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Wei-Peng Li
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Chen-Sheng Yeh
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
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2
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Wei XL, Du WC, Wang R, Zhou JY, Yu H, Lu Y, Wang LC, Huang CY. [Epidemic characteristics and trend analysis of major injuries deaths among children and adolescents in Jiangsu Province from 2012 to 2021]. Zhonghua Liu Xing Bing Xue Za Zhi 2024; 45:536-541. [PMID: 38678349 DOI: 10.3760/cma.j.cn112338-20230912-00150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/29/2024]
Abstract
Objective: To understand the situation and epidemic characteristics of injury deaths among children aged 5 to 24 years in Jiangsu Province from 2012 to 2021 and the trend of annual changes. Methods: The main injury mortality data of children and adolescents was collected, and the crude and standardized mortality rates of road traffic accidents, drowning, suicide, and accidental falls among children and adolescents over a decade and the annual average percentage of change (AAPC) were calculated. The main injury mortality characteristics and trends of children and adolescents of different age groups and genders were analyzed. Results: The total number of injury deaths among 5 to 24 adolescents in Jiangsu Province was 16 052, with a standardized mortality rate of 9.58/100 000. There was no significant trend in the overall standardized mortality rate of injuries (AAPC=-3.450%, P=0.055). The standardized mortality rate of road traffic injuries among children and adolescents showed a decreasing trend over the past decade, with statistical significance (AAPC=-9.406%, P<0.001). The standardized suicide mortality rate showed an upward trend over the past decade, with statistical significance (AAPC=9.000%, P=0.001). The overall injury mortality rate showed an upward trend with age. Suicide rates in males and females were on the rise and both have statistical significance (AAPC=9.420% and AAPC=9.607%, both P<0.05). The standardized mortality rates of female traffic accidents, drowning, and male traffic accidents showed a decreasing trend and were statistically significant (AAPC for female traffic accidents=-7.364%, AAPC for female drowning=-5.352%, and AAPC for male traffic accidents=-10.242%, all P<0.05). The standardized mortality rate of urban and rural traffic accidents showed a decreasing trend and was statistically significant(AAPC=-7.899% and AAPC=-9.421%, both P<0.001). The standardized suicide mortality rate showed an upward trend and statistical significance (AAPC=11.009% and AAPC=7.528%, both P<0.05). Conclusions: The overall injury situation of children and adolescents in Jiangsu Province improved in the past decade from 2012 to 2021, but the suicide mortality rate was on the rise. It is necessary to focus on the mental health issues of this age group and to strengthen the prevention and control of suicide among children and adolescents, in Jiangsu.
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Affiliation(s)
- X L Wei
- Suzhou Center for Disease Control and Prevention, Suzhou 215004, China
| | - W C Du
- Department of Non-communicable Chronic Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - R Wang
- School of Public Health, Southeast University, Nanjing 210009, China
| | - J Y Zhou
- Department of Non-communicable Chronic Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - H Yu
- Department of Non-communicable Chronic Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - Y Lu
- Suzhou Center for Disease Control and Prevention, Suzhou 215004, China
| | - L C Wang
- Suzhou Center for Disease Control and Prevention, Suzhou 215004, China
| | - C Y Huang
- Suzhou Center for Disease Control and Prevention, Suzhou 215004, China
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3
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Yang LT, Wang WJ, Huang WT, Wang LC, Hsu MC, Kan CD, Huang CY, Wong TW, Li WP. Photo-Responsive Ascorbic Acid-Modified Ag 2S-ZnS Heteronanostructure Dropping pH to Trigger Synergistic Antibacterial and Bohr Effects for Accelerating Infected Wound Healing. ACS Appl Mater Interfaces 2024; 16:12018-12032. [PMID: 38394675 PMCID: PMC10921379 DOI: 10.1021/acsami.3c17424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/05/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024]
Abstract
Nonantibiotic approaches must be developed to kill pathogenic bacteria and ensure that clinicians have a means to treat wounds that are infected by multidrug-resistant bacteria. This study prepared matchstick-like Ag2S-ZnS heteronanostructures (HNSs). Their hydrophobic surfactants were then replaced with hydrophilic poly(ethylene glycol) (PEG) and thioglycolic acid (TGA) through the ligand exchange method, and this was followed by ascorbic acid (AA) conjugation with TGA through esterification, yielding well-dispersed PEGylated Ag2S-ZnS@TGA-AA HNSs. The ZnS component of the HNSs has innate semiconductivity, enabling the generation of electron-hole pairs upon irradiation with a light of wavelength 320 nm. These separate charges can react with oxygen and water around the HNSs to produce reactive oxygen species. Moreover, some holes can oxidize the surface-grafted AA to produce protons, decreasing the local pH and resulting in the corrosion of Ag2S, which releases silver ions. In evaluation tests, the PEGylated Ag2S-ZnS@TGA-AA had synergistic antibacterial ability and inhibited Gram-negative Escherichia coli and Gram-positive methicillin-resistant Staphylococcus aureus (MRSA). Additionally, MRSA-infected wounds treated with a single dose of PEGylated Ag2S-ZnS@TGA-AA HNSs under light exposure healed significantly more quickly than those not treated, a result attributable to the HNSs' excellent antibacterial and Bohr effects.
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Affiliation(s)
- Li-Ting Yang
- Department
of Medicinal and Applied Chemistry, Kaohsiung
Medical University, Kaohsiung 807, Taiwan
| | - Wen-Jyun Wang
- Department
of Medicinal and Applied Chemistry, Kaohsiung
Medical University, Kaohsiung 807, Taiwan
| | - Wan-Ting Huang
- Department
of Dermatology, National Cheng Kung University Hospital, College of
Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Liu-Chun Wang
- Department
of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Ming-Chien Hsu
- Department
of Medicinal and Applied Chemistry, Kaohsiung
Medical University, Kaohsiung 807, Taiwan
| | - Chung-Dann Kan
- Division
of Cardiovascular Surgery, Department of Surgery, National Cheng Kung
University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Chun-Yung Huang
- Department
of Seafood Science, National Kaohsiung University
of Science and Technology, Kaohsiung 807, Taiwan
| | - Tak-Wah Wong
- Department
of Dermatology, National Cheng Kung University Hospital, College of
Medicine, National Cheng Kung University, Tainan 704, Taiwan
- Department
of Biochemistry & Molecular Biology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
- Center
of Applied Nanomedicine, National Cheng
Kung University, Tainan 701, Taiwan
| | - Wei-Peng Li
- Department
of Medicinal and Applied Chemistry, Kaohsiung
Medical University, Kaohsiung 807, Taiwan
- Center
of Applied Nanomedicine, National Cheng
Kung University, Tainan 701, Taiwan
- Department
of Medical Research, Kaohsiung Medical University
Hospital, Kaohsiung 807, Taiwan
- Drug
Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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4
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Yan S, Tu CY, Du CY, Luo J, Liu JF, Liu TQ, Liu Q, Liu J, Li XH, Wang LC, Fang ZP, Yi WM, Chen YJ, Li QL, Ni Y, Wu JC, Qin CJ, Gu YL, Lu Z, Lun ZJ, Du LX, Chen G, Zheng QC, Sun KJ, Han WQ, Yu J. [Effect of recombinant human thrombin for hemostasis in liver resection: a randomized controlled phase Ⅲ clinical trial]. Zhonghua Yi Xue Za Zhi 2023; 103:3416-3423. [PMID: 37963740 DOI: 10.3760/cma.j.cn112137-20230911-00438] [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: 11/16/2023]
Abstract
Objective: To evaluate the hemostatic efficacy, safety and immunogenicity of recombinant human thrombin in the treatment of liver wounds that still ooze after conventional surgical hemostasis. Methods: A multicenter, stratified randomized, double-blind, placebo-controlled phase Ⅲ trial with a planned enrollment of 510 subjects at 33 centers, with a 2∶1 randomization to the thrombin group versus the placebo group. An interim analysis will be conducted after approximately 70% of the subjects have completed the observation period. The primary efficacy endpoint was the rate of hemostasis within 6 minutes at the point of bleeding that could be evaluated. Safety analysis was performed one month after surgery, and the positive rates of anti-drug antibody (ADA) and neutralizing antibody were evaluated. Results: At the interim analysis, a total of 348 subjects had been randomized and received the study drug (215 were male and 133 were female). They were aged 19-69 (52.9±10.9)years. Among them, 232 were in the thrombin group and 116 were in the placebo group, with balanced and comparable demographics and baseline characteristics between the two groups. The hemostasis rate at 6 minutes was 71.6% (95%CI:65.75%-77.36%) in the thrombin group and 44.0% (95%CI: 34.93%-53.00%) in the placebo group, respectively (P<0.001). No grade≥3 drug-related adverse events and no drug-related deaths were reported from the study.No recombinant human thrombin-induced immunologically-enhanced ADA or immunologically-induced ADA was detected after topical use in subjects. Conclusion: Recombinant human thrombin has shown significant hemostatic efficacy and good safety in controlling bleeding during liver resection surgery, while also demonstrating low immunogenicity characteristics.
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Affiliation(s)
- S Yan
- Department of Hepatobiliary and Pancreatic Surgery, the Second Hospital of Zhejiang University School of Medicine, Hangzhou 310003, China
| | - C Y Tu
- Department of General Surgery, Lishui Central Hospital, Lishui 323020, China
| | - C Y Du
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
| | - J Luo
- Department of Hepatobiliary and Intestinal Surgery, Hunan Cancer Hospital, Changsha 410031, China
| | - J F Liu
- Department of Hepatobiliary and Pancreatic Surgery, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, China
| | - T Q Liu
- Department of General Surgery, Jiangbin Hospital of Guangxi Zhuang Autonomous Region, Nanning 530021, China
| | - Q Liu
- Department of Hepatobiliary Surgery, Liuzhou People's Hospital, Liuzhou 545006, China
| | - J Liu
- Department of Hepatobiliary Surgery, Guizhou Provicial People's Hospital, Guiyang 550002, China
| | - X H Li
- Department of Hepatobiliary Surgery, Liaocheng People's Hospital, Liaocheng 252000, China
| | - L C Wang
- Department of General Surgery, the Third People's Hospital of Hainan Province, Sanya 572000, China
| | - Z P Fang
- Department of Hepatobiliary Surgery, Taizhou Hospital of Zhejiang Province, Linhai 317099, China
| | - W M Yi
- Department of Hepatobiliary Surgery, Hunan Provincial People's Hospital, Changsha 410005, China
| | - Y J Chen
- Department of Hepatobiliary Surgery, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou 510120, China
| | - Q L Li
- Department of Hepatobiliary and Pancreatic Surgery, the Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - Y Ni
- Department of Hepatobiliary and Pancreatic Surgery, Shenzhen Second People's Hospital, Shenzhen 518035, China
| | - J C Wu
- Department of Hepatobiliary Surgery, Hainan Provincial People's Hospital, Haikou 570311, China
| | - C J Qin
- Department of General Surgery, Huaihe Hospital of Henan University, Kaifeng 475000, China
| | - Y L Gu
- Department of Hepatobiliary Surgery, Affiliated Hospital of Jiangnan Univeisity, Wuxi 214122, China
| | - Z Lu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
| | - Z J Lun
- Department of Hepatobiliary Vascular Surgery, Zaozhuang Municipal Hospital, Zaozhuang 277101, China
| | - L X Du
- Department of Hepatobiliary Surgery, Shanxi Provincial People's Hospital, Xi'an 710068, China
| | - G Chen
- Department of Hepatobiliary and Pancreatic Surgery, the First People's Hospital of Kunming, Kunming 650034, China
| | - Q C Zheng
- Department of Hepatobiliary Surgery, Union Hospital Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430022, China
| | - K J Sun
- Department of Hepatobiliary Surgery, Zibo Central Hospital, Zibo 255036, China
| | - W Q Han
- Department of Urinary Surgery, Hunan Cancer Hospital, Changsha 410031, China
| | - J Yu
- Department of Hepatobiliary and Pancreatic Surgery, the First Hospital of Zhejiang University School of Medicine, Hangzhou 310003, China
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5
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Xing M, Fu QY, Lin SS, Fu X, Wang XX, Wang LC, Zhu X, Ouyang TL. [Analysis of fast-growing culturable bacteria and pathogenic bacteria in the surface water of the northeast coast of Hainan Island in China]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:1206-1216. [PMID: 37574314 DOI: 10.3760/cma.j.cn112150-20230221-00142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Objective: To obtain the diversity and abundance of fast-growing bacteria in the surface water of the northeast coast of Hainan Island in China, different cultivation methods were employed. This study also aims to provide a reference for isolating bacterial samples from seawater sources and preventing marine-derived pathogens. Methods: Based on the principles of taxonomic design, surface seawater samples were collected from six locations along the northeast coast of Hainan Island in China in March, June, October, and December 2021. Then, bacterial enrichment was performed based on traditional cultivation methods for Salmonella, Vibrio, Burkholderia pseudomallei, Actinomycetes, and general marine bacteria. After that, bacterial species identification was conducted by 16S rDNA amplicon sequencing and metagenomic sequencing. Results: A total of 1 151 fast-growing cultivable bacteria belonging to 66 genera and 213 species were identified using five different culture protocols. In different cultivation protocols, Bacillus and Klebsiella demonstrated extensive discriminatory advantages and ranked among the top genera in terms of abundance. Protocol 1 had Escherichia, Klebsiella, and Citrobacter as dominant genera. Pathogenic bacteria detected by protocol 1 included Klebsiella pneumoniae and Escherichia coli, with 37 and 29 strains respectively, while Salmonella enterica was uniquely detected with seven isolates. Proteus, Enterococcus, and Providencia were the dominant genera in protocol 2, and Proteus mirabilis was the most abundant pathogenic bacteria detected with 66 isolates. Vibrio cholerae was uniquely detected with six isolates at a higher abundance. Klebsiella, Escherichia, and Acinetobacter were the dominant genera in protocol 3, and Klebsiella pneumoniae was the most abundant pathogenic bacteria detected with 53 isolates, while Acinetobacter nosocomialis was uniquely detected with seven isolates. Vibrio and Pseudoalteromonas were the dominant genera in protocol 4, and they showed advantages in isolating and cultivating Marine-derived Vibrio. Exiguobacterium, Staphylococcus, and Bacillus were the dominant genera in protocol 5. Bacillus cereus and Lactococcus lactis were the most abundant pathogenic bacteria detected with 20 and 15 isolates, respectively, while Lactococcus lactis was uniquely detected at higher abundance. Metagenomic sequencing showed that Klebsiella pneumoniae was significantly dominant with a gene abundance of 51.11%, followed by Alcanivorax sp. at 12.57%. Conclusion: The surface water of the northeast coast of Hainan Island in China exhibits a rich diversity of bacteria, with Klebsiella pneumoniae being highly abundant in the studied area. Different cultivation methods demonstrate distinct selective advantages in culturing bacterial genera and pathogens. Therefore, it is necessary to optimize cultivation conditions for specific marine bacteria.
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Affiliation(s)
- M Xing
- Department of Clinical Laboratory,Wenchang People's Hospital, Wenchang 571300, China
| | - Q Y Fu
- Department of Clinical Laboratory,Wenchang People's Hospital, Wenchang 571300, China
| | - S S Lin
- Department of Clinical Laboratory,Wenchang People's Hospital, Wenchang 571300, China
| | - X Fu
- Department of Clinical Laboratory,Wenchang People's Hospital, Wenchang 571300, China
| | - X X Wang
- Department of Clinical & Central Laboratory,Sanya People's Hospital, Sanya 572000, China
| | - L C Wang
- Department of Clinical & Central Laboratory,Sanya People's Hospital, Sanya 572000, China
| | - X Zhu
- Department of Clinical & Central Laboratory,Sanya People's Hospital, Sanya 572000, China
| | - T L Ouyang
- Department of Clinical & Central Laboratory,Sanya People's Hospital, Sanya 572000, China
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6
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Wang LC, Chiou PY, Hsu YP, Lee CL, Hung CH, Wu YH, Wang WJ, Hsieh GL, Chen YC, Chang LC, Su WP, Manoharan D, Liao MC, Thangudu S, Li WP, Su CH, Tian HK, Yeh CS. Prussian blue analog with separated active sites to catalyze water driven enhanced catalytic treatments. Nat Commun 2023; 14:4709. [PMID: 37543632 PMCID: PMC10404294 DOI: 10.1038/s41467-023-40470-z] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Accepted: 07/28/2023] [Indexed: 08/07/2023] Open
Abstract
Chemodynamic therapy (CDT) uses the Fenton or Fenton-like reaction to yield toxic ‧OH following H2O2 → ‧OH for tumoral therapy. Unfortunately, H2O2 is often taken from the limited endogenous supply of H2O2 in cancer cells. A water oxidation CoFe Prussian blue (CFPB) nanoframes is presented to provide sustained, external energy-free self-supply of ‧OH from H2O to process CDT and/or photothermal therapy (PTT). Unexpectedly, the as-prepared CFPB nanocubes with no near-infrared (NIR) absorption is transformed into CFPB nanoframes with NIR absorption due to the increased Fe3+-N ≡ C-Fe2+ composition through the proposed proton-induced metal replacement reactions. Surprisingly, both the CFPB nanocubes and nanoframes provide for the self-supply of O2, H2O2, and ‧OH from H2O, with the nanoframe outperforming in the production of ‧OH. Simulation analysis indicates separated active sites in catalyzation of water oxidation, oxygen reduction, and Fenton-like reactions from CFPB. The liposome-covered CFPB nanoframes prepared for controllable water-driven CDT for male tumoral mice treatments.
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Affiliation(s)
- Liu-Chun Wang
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Pei-Yu Chiou
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Ya-Ping Hsu
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Chin-Lai Lee
- Department of Diagnostic Radiology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, 833, Taiwan
| | - Chih-Hsuan Hung
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Yi-Hsuan Wu
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Wen-Jyun Wang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Gia-Ling Hsieh
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Ying-Chi Chen
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Li-Chan Chang
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, 704, Taiwan
| | - Wen-Pin Su
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, 704, Taiwan
- Departments of Oncology and Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 704, Taiwan
| | - Divinah Manoharan
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Min-Chiao Liao
- Department of Diagnostic Radiology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, 833, Taiwan
| | - Suresh Thangudu
- Center for General Education, Chang Gung University, Taoyuan, 333, Taiwan
| | - Wei-Peng Li
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
- Center of Applied Nanomedicine, National Cheng Kung University, Tainan, 701, Taiwan.
| | - Chia-Hao Su
- Center for General Education, Chang Gung University, Taoyuan, 333, Taiwan.
- Department of Biomedical Imaging and Radiological Sciences, National Yang Ming Chiao Tung University, Taipei, 112, Taiwan.
- Department of Radiation Oncology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, 833, Taiwan.
- Institute for Radiological Research, Chang Gung University, Taoyuan, 333, Taiwan.
| | - Hong-Kang Tian
- Department of Chemical Engineering, National Cheng Kung University, Tainan, 701, Taiwan.
- Program on Smart and Sustainable Manufacturing, Academy of Innovative Semiconductor and Sustainable Manufacturing, National Cheng Kung University, Tainan, 701, Taiwan.
- Hierarchical Green-Energy Materials Research Center, National Cheng Kung University, Tainan, 701, Taiwan.
| | - Chen-Sheng Yeh
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan.
- Center of Applied Nanomedicine, National Cheng Kung University, Tainan, 701, Taiwan.
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7
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Wang LC, Chang LC, Chen WQ, Chien YH, Chang PY, Pao CW, Liu YF, Sheu HS, Su WP, Yeh CH, Yeh CS. Atomically dispersed golds on degradable zero-valent copper nanocubes augment oxygen driven Fenton-like reaction for effective orthotopic tumor therapy. Nat Commun 2022; 13:7772. [PMID: 36522345 PMCID: PMC9755215 DOI: 10.1038/s41467-022-35515-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 12/08/2022] [Indexed: 12/16/2022] Open
Abstract
Herein, we employ a galvanic replacement approach to create atomically dispersed Au on degradable zero-valent Cu nanocubes for tumor treatments on female mice. Controlling the addition of precursor HAuCl4 allows for the fabrication of different atomic ratios of AuxCuy. X-ray absorption near edge spectra indicates that Au and Cu are the predominant oxidation states of zero valence. This suggests that the charges of Au and Cu remain unchanged after galvanic replacement. Specifically, Au0.02Cu0.98 composition reveals the enhanced •OH generation following O2 → H2O2 → •OH. The degradable Au0.02Cu0.98 released Cu+ and Cu2+ resulting in oxygen reduction and Fenton-like reactions. Simulation studies indicate that Au single atoms boot zero-valent copper to reveal the catalytic capability of Au0.02Cu0.98 for O2 → H2O2 → •OH as well. Instead of using endogenous H2O2, H2O2 can be sourced from the O2 in the air through the use of nanocubes. Notably, the Au0.02Cu0.98 structure is degradable and renal-clearable.
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Affiliation(s)
- Liu-Chun Wang
- grid.64523.360000 0004 0532 3255Department of Chemistry, National Cheng Kung University, Tainan, 701 Taiwan
| | - Li-Chan Chang
- grid.64523.360000 0004 0532 3255Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, 704 Taiwan
| | - Wen-Qi Chen
- grid.64523.360000 0004 0532 3255Department of Chemistry, National Cheng Kung University, Tainan, 701 Taiwan
| | - Yi-Hsin Chien
- grid.411298.70000 0001 2175 4846Department of Materials Science and Engineering, Feng Chia University, Taichung, 40724 Taiwan
| | - Po-Ya Chang
- grid.410766.20000 0001 0749 1496National Synchrotron Radiation Research Center, Hsinchu, 30076 Taiwan
| | - Chih-Wen Pao
- grid.410766.20000 0001 0749 1496National Synchrotron Radiation Research Center, Hsinchu, 30076 Taiwan
| | - Yin-Fen Liu
- grid.64523.360000 0004 0532 3255Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, 704 Taiwan
| | - Hwo-Shuenn Sheu
- grid.410766.20000 0001 0749 1496National Synchrotron Radiation Research Center, Hsinchu, 30076 Taiwan
| | - Wen-Pin Su
- grid.64523.360000 0004 0532 3255Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, 704 Taiwan ,grid.64523.360000 0004 0532 3255Departments of Oncology and Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, 704 Taiwan
| | - Chen-Hao Yeh
- grid.411298.70000 0001 2175 4846Department of Materials Science and Engineering, Feng Chia University, Taichung, 40724 Taiwan
| | - Chen-Sheng Yeh
- grid.64523.360000 0004 0532 3255Department of Chemistry, National Cheng Kung University, Tainan, 701 Taiwan
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8
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Su WP, Chang LC, Song WH, Yang LX, Wang LC, Chia ZC, Chin YC, Shan YS, Huang CC, Yeh CS. Polyaniline-Based Glyco-Condensation on Au Nanoparticles Enhances Immunotherapy in Lung Cancer. ACS Appl Mater Interfaces 2022; 14:24144-24159. [PMID: 35579575 DOI: 10.1021/acsami.2c03839] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Lung cancer is considered among the deadliest cancers with a poor prognosis. Au@PG nanoparticles (NPs) are gold (Au)-based NPs featuring a polyaniline-based glyco structure (PG) generated from the polymerization of ortho-nitrophenyl-β-d-galactopyranoside (ONPG) with promising M1 macrophage polarization activity, resulting in tumor remodeling and from a cold to a hot microenvironment, which promotes the cytotoxic T cell response and tumor inhibition. The combination of Au@PG NPs and anti-programmed cell death protein 1 (PD-1) therapy improved tumor inhibition and immunosuppression, accompanied by the secretion of immunogenic cytokines. A one-pot synthetic method was developed to achieve glyco-condensation during the formation of Au@PG NPs, which induced macrophage polarization more efficiently than Au@glucose, Au@mannose, and Au@galactose NPs. The switch from M2 to M1 macrophages was dependent on NP size, with smaller Au@PG NPs performing better than larger ones, with effectiveness ranked as follows: 32.2 nm ≈ 29.8 nm < 26.4 nm < 18.3 nm. Cellular uptake by endocytosis induced size-dependent endoplasmic reticulum (ER) stress, which resulted in the activation of spleen tyrosine kinase (SYK), leading to immune modulations and macrophage polarization. Our results suggested the promising potential of Au@PG NPs in lung cancer immunotherapy.
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Affiliation(s)
- Wen-Pin Su
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
- Departments of Oncology and Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
- Center of Applied Nanomedicine, National Cheng Kung University, Tainan 701, Taiwan
| | - Li-Chan Chang
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Wei-How Song
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Li-Xing Yang
- Department of Photonics, Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan 701, Taiwan
- Center of Applied Nanomedicine, National Cheng Kung University, Tainan 701, Taiwan
| | - Liu-Chun Wang
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Zi-Chun Chia
- Department of Photonics, Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan 701, Taiwan
| | - Yu-Cheng Chin
- Department of Photonics, Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan 701, Taiwan
| | - Yan-Shen Shan
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
- Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Chih-Chia Huang
- Department of Photonics, Center for Micro/Nano Science and Technology, National Cheng Kung University, Tainan 701, Taiwan
- Center of Applied Nanomedicine, National Cheng Kung University, Tainan 701, Taiwan
| | - Chen-Sheng Yeh
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
- Center of Applied Nanomedicine, National Cheng Kung University, Tainan 701, Taiwan
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9
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Dai NB, Zhu XY, Jiang L, Gao Y, Hua YJ, Wang LC, Zhou JY, Wu M, Lu Y. [Incidence of gastric cancer and risk factors in Suzhou cohort]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:452-459. [PMID: 35443297 DOI: 10.3760/cma.j.cn112338-20210707-00536] [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 describe gastric cancer incidence in Suzhou cohort, explore the environmental risk factors of gastric cancer in Suzhou, and provide appropriate suggestions for gastric cancer prevention and control. Methods: The participants were from the Suzhou cohort of China Kadoorie Biobank. Baseline survey was conducted from 2004 to 2008, followed by long-term follow-up until December 31, 2013. After the exclusion of those who had been previously diagnosed with peptic ulcer and malignant tumor reported at baseline survey and gastric cancer within six months after enrollment, a total of 50,136 participants were included. Cox proportional risk models were used to identify risk factors of gastric cancer and their hazard ratios in Suzhou. The effect modifications of gender on the association between risk factors and gastric cancer were analyzed. Results: In the follow-up of 7.19 years (median), 374 gastric cancers cases occurred. The standardized incidence was 94.57 per 100 000 person-years. Multivariate Cox proportional risk model analysis found that age (10 years old as a age group, HR=2.20, 95%CI: 1.92-2.53, P<0.001), current smoking (HR=1.84, 95%CI: 1.10-3.07 P=0.020), consumption of preserved vegetables weekly (HR=2.28, 95%CI: 1.28-4.07, P=0.005) and daily (HR=2.05, 95%CI: 1.16-3.61, P=0.013) were risk factors for gastric cancer. Female (HR=0.44, 95%CI: 0.25-0.76, P=0.003) and refrigerator use (10 years as a limit, HR=0.85, 95%CI: 0.74-0.97, P=0.016) were protective factors for gastric cancer. Further analysis showed that there was heterogeneity between males and females in the association between refrigerator use years and the incidence of gastric cancer (P=0.009), and there was an interaction effect between gender and refrigerator use on the incidence of gastric cancer (P=0.010). Conclusions: The incidence of gastric cancer in Suzhou cohort was high. The risk factors of gastric cancer varied. There was a synergistic interaction effect between gender and refrigerator use years on the incidence of gastric cancer.
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Affiliation(s)
- N B Dai
- Biological Sample Application and Management Department, Suzhou Center for Disease Control and Prevention, Suzhou 215004, China
| | - X Y Zhu
- Biological Sample Application and Management Department, Suzhou Center for Disease Control and Prevention, Suzhou 215004, China
| | - L Jiang
- Biological Sample Application and Management Department, Suzhou Center for Disease Control and Prevention, Suzhou 215004, China
| | - Y Gao
- Biological Sample Application and Management Department, Suzhou Center for Disease Control and Prevention, Suzhou 215004, China
| | - Y J Hua
- Chronic Non-communicable Diseases Prevention and Control Department, Suzhou Center for Disease Control and Prevention, Suzhou 215004, China
| | - L C Wang
- Chronic Non-communicable Diseases Prevention and Control Department, Suzhou Center for Disease Control and Prevention, Suzhou 215004, China
| | - J Y Zhou
- Chronic Non-communicable Diseases Prevention and Control Institute, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - M Wu
- Chronic Non-communicable Diseases Prevention and Control Institute, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - Y Lu
- Chronic Non-communicable Diseases Prevention and Control Department, Suzhou Center for Disease Control and Prevention, Suzhou 215004, China
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10
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Wang LC, Chang LC, Su GL, Chang PY, Hsu HF, Lee CL, Li JR, Liao MC, Thangudu S, Treekoon J, Yu CC, Sheu HS, Tu TY, Su WP, Su CH, Yeh CS. Chemical Structure and Shape Enhance MR Imaging-Guided X-ray Therapy Following Marginative Delivery. ACS Appl Mater Interfaces 2022; 14:13056-13069. [PMID: 35253424 DOI: 10.1021/acsami.1c24991] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Ineffective site-specific delivery has seriously impeded the efficacy of nanoparticle-based drugs to a disease site. Here, we report the preparation of three different shapes (sphere, scroll, and oblate) to systematically evaluate the impact of the marginative delivery on the efficacy of magnetic resonance (MR) imaging-guided X-ray irradiation at a low dose of 1 Gy. In addition to the shape effect, the therapeutic efficacy is investigated for the first time to be strongly related to the structure effect that is associated with the chemical activity. The enhanced particle-vessel wall interaction of both the flat scroll and oblate following margination dynamics leads to greater accumulation in the lungs, resulting in superior performance over the sphere against lung tumor growth and suppression of lung metastasis. Furthermore, the impact of the structural discrepancy in nanoparticles on therapeutic efficacy is considered. The tetragonal oblate reveals that the feasibility of the charge-transfer process outperforms the orthorhombic scroll and cubic sphere to suppress tumors. Finally, surface area is also a crucial factor affecting the efficacy of X-ray treatments from the as-prepared particles.
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Affiliation(s)
- Liu-Chun Wang
- Department of Chemistry, National Cheng Kung University, Tainan 701 Taiwan
| | - Li-Chan Chang
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Guan-Lin Su
- Department of Biomedical Engineering, National Cheng Kung University, Tainan 701 Taiwan
| | - Po-Ya Chang
- National Synchrotron Radiation Research Center, Hsinchu 30077, Taiwan
| | - Hsiao-Fen Hsu
- National Synchrotron Radiation Research Center, Hsinchu 30077, Taiwan
| | - Chin-Lai Lee
- Kaohsiung Chang Gung Memorial Hospital, Institute for Translational Research in Biomedicine, Kaohsiung 833, Taiwan
| | - Jie-Ren Li
- Department of Chemistry, National Cheng Kung University, Tainan 701 Taiwan
| | - Min-Chiao Liao
- Kaohsiung Chang Gung Memorial Hospital, Institute for Translational Research in Biomedicine, Kaohsiung 833, Taiwan
| | - Suresh Thangudu
- Kaohsiung Chang Gung Memorial Hospital, Institute for Translational Research in Biomedicine, Kaohsiung 833, Taiwan
| | - Jongjit Treekoon
- Department of Chemistry, National Cheng Kung University, Tainan 701 Taiwan
| | - Chun-Chieh Yu
- Kaohsiung Chang Gung Memorial Hospital, Institute for Translational Research in Biomedicine, Kaohsiung 833, Taiwan
| | - Hwo-Shuenn Sheu
- National Synchrotron Radiation Research Center, Hsinchu 30077, Taiwan
| | - Ting-Yuan Tu
- Department of Biomedical Engineering, National Cheng Kung University, Tainan 701 Taiwan
- Medical Device Innovation Center, National Cheng Kung University, Tainan 701 Taiwan
| | - Wen-Pin Su
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
- Departments of Oncology and Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Chia-Hao Su
- Kaohsiung Chang Gung Memorial Hospital, Institute for Translational Research in Biomedicine, Kaohsiung 833, Taiwan
- Department of Biomedical Imaging and Radiological Sciences, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Chen-Sheng Yeh
- Department of Chemistry, National Cheng Kung University, Tainan 701 Taiwan
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11
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Hua YJ, Lu Y, Wang LC, Yu H, Duan YJ, Lyu J, Li LM. [Association between perception of community environment and physical activity in residents in Suzhou]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:1969-1975. [PMID: 34818842 DOI: 10.3760/cma.j.cn112338-20200929-01208] [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: 06/13/2023]
Abstract
Objective: To estimate physical activity level in residents in Suzhou and explore the association between community environment and physical activity level in local residents. Methods: Through multistage stratified random sampling, residents aged 25-64 years in Suzhou were surveyed by face-to face interview in 2017. Physical activity levels were assessed by the international physical activity questionnaire-long version (IPAQ-L). Perceptions of community environment were assessed by Neighborhood Environment Walkability Scale-Abbreviated (NEWS-A). Results: Among the local residents surveyed in Suzhou,the median of weekly total physical activity level was 3 610.42 MET-min/w. The level of occupational physical activity was higher than that of transportation, household and leisure-time related physical activity levels. After controlling for socio-demographic factors, public service access was negatively associated with the overall physical activity level (OR=0.522,95%CI:0.329-0.830), land-use mix-diversity was negatively associated with the level of occupational physical activity level (OR=0.701,95%CI: 0.492-0.999), infrastructure of walk and cycle ways was positively associated with occupational physical activity level (OR=1.603,95%CI:1.004-2.559); traffic hazards were negatively associated with the transportation physical activity level (OR=0.642,95%CI: 0.416-0.990); residential building density was positively associated with leisure-time physical activity level (OR=1.001,95%CI: 1.000-1.002), and the perceptions level of community environment were positively associated with the occupational, transportation, household and overall physical activity levels (OR=1.889,95%CI: 1.176-3.033;OR=1.671,95%CI: 1.120-2.495;OR=1.775,95%CI: 1.143-2.756;OR=1.593,95%CI: 1.079-2.350). Conclusion: Improving infrastructure of walk and cycle ways and beautifying community environment play an important role in increasing the physical activity level of the residents.
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Affiliation(s)
- Y J Hua
- Department of Non-communicable Disease Control and Prevention, Suzhou City Center for Disease Control and Prevention, Suzhou 215004, China
| | - Y Lu
- Department of Non-communicable Disease Control and Prevention, Suzhou City Center for Disease Control and Prevention, Suzhou 215004, China
| | - L C Wang
- Department of Non-communicable Disease Control and Prevention, Suzhou City Center for Disease Control and Prevention, Suzhou 215004, China
| | - H Yu
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - Y J Duan
- School of Public Health, Peking University, Beijing 100191, China
| | - J Lyu
- School of Public Health, Peking University, Beijing 100191, China
| | - L M Li
- School of Public Health, Peking University, Beijing 100191, China
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12
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Wang LC, Liu YX, Dun YJ, Sun XG. Early and mid-term outcomes of modified aortic root repair for acute stanford type A aortic dissection. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2007] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Acute Stanford type A aortic dissection (ATAAD) is the most common catastrophic aortic event. Most ATAAD involves the aortic root which has many important anatomical structures such as aortic valve, so the proper treatment of dissected root can ensure a good prognosis for patients. However, there is still no consensus on root management strategies for ATAAD patients with aortic root involvement.
Purpose
This clinical study aimed to evaluate the therapeutic effect of modified aortic root repair in ATAAD.
Methods
From September 2017 to September 2020, Participants with root involvement of ATAAD were recruited who underwent modified aortic root repair as well as some additional procedure such as aortic valve junction suspension plasty based on the aortic sinus tear extent. During this novel procedure, the proximal anastomosis plane was at the level of the sinu-tubular junction and the false lumen below it was retained. We collected and analyzed the perioperative clinical data and follow-up imaging data of patients, and further evaluated the early and mid-term efficacy of this surgical approach.
Results
A total of 79 patients were enrolled, including 59 males and 20 females, the age was (52.4±11.3) years old (28–73 years), the diameter of aortic sinus was (38.6±4.1) mm, and the diameter of sinu-tubular junction was (41.8±4.8) mm. In this group, 75 patients (94.9%) received ascending aorta replacement, total arch replacement and frozen elephant trunk, 2 patients (2.5%) received ascending aorta replacement and hybrid total arch replacement, 2 patients (2.5%) received ascending aorta replacement and partial arch replacement. Cardiopulmonary bypass time was (197.2±58.6) min (118–455 min), blocking time was (132.6±38.9) min (73–323 min), circulatory arrest time was (10.3±7.0) min (0–27 min). There was no perioperative death, no paraplegia, one secondary thoracotomy, five renal failures needing hemodialysis treatment and two cerebral infarctions. Before patients discharged, aortic CTA showed that the residual false lumen in the sinus disappeared. And the diameter of the aortic sinus was (35.5±3.1) mm, the diameter of the junction of the aortic sinus was (30.0±3.0) mm. The patients were followed up for (18±12) months (3–35 months). There was one patient died during follow-up and no further surgical intervention at the root of the aorta. Follow-up aortic CTA showed no residual or new dissection in the aortic sinus and no significant difference in the diameters of aortic sinu-tubular junction (P=0.122) or aortic sinus (P=0.37) between postoperative period and follow-up period. Echocardiography showed that the structure and function of the aortic valve were normal.
Conclusions
The modified aortic root repair for ATAAD is relatively simple, easy to learn and safe in perioperative period. Early and mid-term follow-up image examination showed that the structure of aortic sinus returned to normal. The long-term clinical effect requires close attention.
Funding Acknowledgement
Type of funding sources: None. Modified aortic root repair procedureAortic root diameter change under CTA
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Affiliation(s)
- L C Wang
- Fuwai Hospital, CAMS and PUMC, Department of Cardiovascular Surgery, Beijing, China
| | - Y X Liu
- Fuwai Hospital, CAMS and PUMC, Department of Cardiovascular Surgery, Beijing, China
| | - Y J Dun
- Fuwai Hospital, CAMS and PUMC, Department of Cardiovascular Surgery, Beijing, China
| | - X G Sun
- Fuwai Hospital, CAMS and PUMC, Department of Cardiovascular Surgery, Beijing, China
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13
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Manoharan D, Chang LC, Wang LC, Shan YS, Lin FC, Wu LC, Sheu HS, Su WP, Yeh CS. Synchronization of Nanoparticle Sensitization and Radiosensitizing Chemotherapy through Cell Cycle Arrest Achieving Ultralow X-ray Dose Delivery to Pancreatic Tumors. ACS Nano 2021; 15:9084-9100. [PMID: 33974409 DOI: 10.1021/acsnano.1c02283] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Pancreatic cancer is among the leading causes of cancer-related death and remains a formidable therapeutic challenge. To date, surgical resection and chemotherapy have been the standards of care. Methotrexate (MTX), which is recognized as a refractory drug for pancreatic cells, was conjugated to the surface of LiYF4:Ce3+ nanoparticles (NP-MTX) through a photocleavable linker molecule. When LiYF4:Ce3+ NPs are stimulated by X-rays, they emit light, which induces the photocleavage of the photolabile linker molecule to release MTX. MTX can target pancreatic tumors, which overexpress folic acid (FA) receptors and are internalized into the cell through receptor-mediated endocytosis. The synergistic effect of the NP-MTX treatment initiated by X-ray irradiation occurs due to the combination of nanoparticle sensitization and the radiosensitizing chemotherapy of the photocleaved MTX molecule. This dual sensitization effect mediated by NP-MTX enabled 40% dose enhancement, which corresponded with an increase in the generation of cytotoxic cellular reactive oxygen species (ROS) and enhanced S phase arrest within the cell cycle. The delivery of an ultralow radiation dose of 0.1 Gy resulted in the photocleavage of MTX from NP-MTX, and this strategy demonstrated in vivo efficacy against AsPC-1 and PANC-1 xenografted pancreatic tumors.
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Affiliation(s)
- Divinah Manoharan
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Li-Chan Chang
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Liu-Chun Wang
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Yan-Shen Shan
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
- Department of Surgery, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Forn-Chia Lin
- Department of Radiation Oncology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Lai-Chin Wu
- National Synchrotron Radiation Research Center, Hsinchu 300, Taiwan
| | - Hwo-Shuenn Sheu
- National Synchrotron Radiation Research Center, Hsinchu 300, Taiwan
| | - Wen-Pin Su
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
- Departments of Oncology and Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Chen-Sheng Yeh
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
- Center of Applied Nanomedicine, National Cheng Kung University, Tainan 704, Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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14
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Pham KY, Wang LC, Hsieh CC, Hsu YP, Chang LC, Su WP, Chien YH, Yeh CS. 1550 nm excitation-responsive upconversion nanoparticles to establish dual-photodynamic therapy against pancreatic tumors. J Mater Chem B 2021; 9:694-709. [PMID: 33367451 DOI: 10.1039/d0tb02655g] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The second near-infrared biological window b (NIR-IIb, 1500-1700 nm) is recently considered as the promising region for deeper tissue penetration. Herein, a nanocarrier for 1550 nm light-responsive dual-photodynamic therapy (PDT) is developed to efficiently boost singlet oxygen (1O2) generation. The dual-photosensitizers (PSs), rose bengal (RB) and chlorin e6 (Ce6), are carried by the silica-coated core-shell LiYbF4:Er@LiGdF4 upconversion nanoparticles (UCNPs), forming UCNP/RB,Ce6. Following 1550 nm laser irradiation, the upconversion emission of UCNP/RB,Ce6 in both green (∼550 nm) and red (∼670 nm) colors is fully utilized to activate RB and Ce6, respectively. The simultaneous triggering of dual-PS generates an abundant amount of 1O2 resulting in boosted PDT efficacy. This dual-PDT nanocarrier presents an enhanced anticancer effect under single dose treatment in comparison with the single-PS ones from in vitro and in vivo treatments. The marriage between the boosted dual-PDT and 1550 nm light excitation is anticipated to provide a new avenue for non-invasive therapy.
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Affiliation(s)
- Khang-Yen Pham
- Department of Chemistry, National Cheng Kung University, Tainan, Taiwan.
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15
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Wang LC, Gu AQ, Sun CL, Xu H, Ni XS, Wang RJ, Zhao XY, Wang QC. Cross-sectional study of factors correlated to quality of life in patients with coronary artery disease and diabetic retinopathy. J BIOL REG HOMEOS AG 2020; 34:1235-1240. [PMID: 32959642] [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] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Affiliation(s)
- L C Wang
- Cardiology Unit, Taizhou People's Hospital, Taizhou, Jiangsu, China
| | - A Q Gu
- Cardiology Unit, Taizhou People's Hospital, Taizhou, Jiangsu, China
| | - C L Sun
- Cardiology Unit, Taizhou People's Hospital, Taizhou, Jiangsu, China
| | - H Xu
- Cardiology Unit, Taizhou People's Hospital, Taizhou, Jiangsu, China
| | - X S Ni
- Cardiology Unit, Taizhou People's Hospital, Taizhou, Jiangsu, China
| | - R J Wang
- Cardiology Unit, Taizhou People's Hospital, Taizhou, Jiangsu, China
| | - X Y Zhao
- Cardiology Unit, Taizhou People's Hospital, Taizhou, Jiangsu, China
| | - Q C Wang
- Cardiology Unit, Taizhou People's Hospital, Taizhou, Jiangsu, China
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16
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Pu YC, Wang LC, Wu SN, Chang JC, Yeh CS. Aspect Ratio-Dependent Charge Carrier Dynamics in Matchstick-like Ag 2S-ZnS Nanorods for Solar Hydrogen Generation. J Phys Chem Lett 2020; 11:2150-2157. [PMID: 32090570 DOI: 10.1021/acs.jpclett.0c00413] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Matchstick-like Ag2S-ZnS nanorods (NRs) with a tunable aspect ratio (AR) were synthesized using one-pot thermal decomposition. The ultraviolet photoelectron spectra and time-resolved photoluminescence spectra of the Ag2S-ZnS NRs were collected to study their electronic band structures and charge carrier dynamics. The energy difference (ΔE) at the interface between the ZnS stem and Ag2S tip was altered as the AR of Ag2S-ZnS NRs increased from 11.9 to 18.4, resulting in an enlarged driving force for the delocalized electrons along the conduction band of ZnS being injected into that of Ag2S. The interfacial electron transfer rate constant (ket) from ZnS to Ag2S could be enhanced by ∼2 orders of magnitude from 5.27 × 106 to 3.24 × 108 s-1, leading to a significant improvement in the efficiency of solar hydrogen generation. This investigation provides new physical insights into the manipulation of charge carrier dynamics by means of AR adjustment in semiconductor nanoheterostructures for photoelectric conversions.
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Affiliation(s)
- Ying-Chih Pu
- Department of Materials Science, National University of Tainan, Tainan 70005, Taiwan
| | - Liu-Chun Wang
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Shu-Ning Wu
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Jui-Cheng Chang
- Bachelor Program in Interdisciplinary Studies, National Yunlin University of Science and Technology, Douliu, Yunlin 64002, Taiwan
| | - Chen-Sheng Yeh
- Department of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
- Center of Applied Nanomedicine, National Cheng Kung University, Tainan 701, Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
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17
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Huang CY, Li JX, Chen SF, Chen JC, Lu Y, Huang QL, Wang LC, Hua YJ, Hu YH. [Years of potential life lost due to premature death of cardiovascular diseases among residents in Suzhou from 1987 to 2017]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:104-107. [PMID: 31914577 DOI: 10.3760/cma.j.issn.0253-9624.2020.01.019] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
From 1987 to 2017, cardiovascular disease (CVD) had been ranking the first cause of death in Suzhou, and the mortality rate showed an upward trend annual percentage changes (APC=0.62%, P=0.001), while the standardized mortality rate showed a downward trend (APC=-2.65%, P<0.001). The probability of premature death of CVD declined consistently from 7.06% in 1987 to 2.00% in 2017 (APC=-4.45%, P<0.001). When the life expectancy was set at 70, the potential years of life lost rate (PYLLR) decreased from 6.35‰ in 1987 to 3.30‰ in 2017, and the standardized PYLLR decreased from 7.30‰ to 2.68‰. When the life expectancy was set at 75, the PYLLR decreased from 10.12‰ to 5.19‰, and the standardized PYLLR decreased from 11.44‰ to 3.88‰. With the increase of years, all PYLLR and standardized PYLLR showed a significantly downward trend (APC=-2.51%--3.89%, P<0.001).
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Affiliation(s)
- C Y Huang
- Department of Chronic Disease Prevention and Control, Center for Disease Prevention and Control, Suzhou 215004, China
| | - J X Li
- Department of Epidemiology, Fuwai Hospital, National Center for Cardiovascular Diseases/ Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - S F Chen
- Department of Epidemiology, Fuwai Hospital, National Center for Cardiovascular Diseases/ Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - J C Chen
- Department of Epidemiology, Fuwai Hospital, National Center for Cardiovascular Diseases/ Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Y Lu
- Department of Chronic Disease Prevention and Control, Center for Disease Prevention and Control, Suzhou 215004, China
| | - Q L Huang
- Department of Chronic Disease Prevention and Control, Center for Disease Prevention and Control, Suzhou 215004, China
| | - L C Wang
- Department of Chronic Disease Prevention and Control, Center for Disease Prevention and Control, Suzhou 215004, China
| | - Y J Hua
- Department of Chronic Disease Prevention and Control, Center for Disease Prevention and Control, Suzhou 215004, China
| | - Y H Hu
- Department of Chronic Disease Prevention and Control, Center for Disease Prevention and Control, Suzhou 215004, China
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Wang LC, Chen YG, Zhang Y, Yang HY, Zhao R, Xia YJ. [Clinical study on topography-guided laser ablation combined with accelerated corneal collagen cross-linking for early keratoconus]. Zhonghua Yan Ke Za Zhi 2019; 55:904-910. [PMID: 31874503 DOI: 10.3760/cma.j.issn.0412-4081.2019.12.007] [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] [Indexed: 11/05/2022]
Abstract
Objective: To study the safety and efficacy of topography-guided customized excimer laser subepithelial ablation combined with accelerated collagen cross-linking technique in treatment of early keratoconus. Methods: Ninteen patients(20 eyes) (13 males 14 eyes, and 6 females 6 eyes), aged 12 to 44 years (24.7±8.0) were diagnosed as keratoconus by three-dimensional corneal topography and tomography, clinical history and examinations, and classified as KC1~KC3. Based on the classical excimer laser subepithelial keratomileusis (LASEK) method, topography guided laser ablation was performed with an excimer laser system (WaveLight EX500). After laser ablation, the corneal stromal bed was immersed with 0.1% riboflavin for 10 minutes, and then was irradiated by ultraviolet light (Avedro KXL) at 30 mW/cm(2) for 4 minutes. All the patients were followed up for more than 12 months. The uncorrected visual acuity (UCVA), diopter, best corrected visual acuity (BSCVA), corneal topography, central corneal endothelial cell density (ECD), hexagonal cell percentage (HEX), coefficient of variation (CV) and other indicators were observed. For normal distribution variables, Dunnett-t test was used before and after operation, and Wilcoxon test was used for variables with abnormal distribution. And the complications were recorded. Results: There was no loss of BSCVA at 12 months postoperatively, 20% of the eyes had no change of BSCVA, and 15% of the eyes gained 1 line of BSCVA, 15% of the eyes gained 2 lines of BSCVA, 50% of the eyes gained 3 lines and more of BSCVA. There was no significant difference in UCVA, BSCVA, manifest refractive spherical equivalent (MRSE) and the cylinder at 3 months postoperatively (P>0.05). The BSCVA were significantly improved at 6 and 12 months postoperatively compared with those before operation (t=3.095, 3.079, <0.05). Although there was no significant difference in UCVA and MRSE, the cylinder was significantly reduced at 6 and 12 months postoperatively (t=-2.890, -2.435, P<0.05). Apex curvature (Kapex) and mean pupil power (MPP) within 4.5mm of central cornea decreased significantly (Z=-2.903, P<0.01; Z=-2.667, P<0.01). Even though the thinnest corneal thickness decreased from pre-operational (461.9±31.1) μm to post-operational (416.6±27.0) μm (Z=-3.059, P<0.01), the cornea became regular with keratometric asymmetry index of anterior corneal surface decreased (Z=-2.667, P<0.01). The corneal optical quality parameters were improved. There was no significant difference in ECD, HEX and CV at 12 months postoperatively (P>0.05). Twelve months after operation, grade 0, 0.5, 1 and 2 haze were seen on 20%, 55%, 20% and 5% corneas respectively. Conclusions: The topography guided excimer laser ablation combined with accelerated corneal collagen cross linking is safe and effective in treatment of early stage keratoconus. It can significantly improve corneal regularity while preventing keratoconus progression, so as to improve the best corrected visual acuity postoperatively. (Chin J Ophthalmol, 2019, 55: 904-910).
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Affiliation(s)
- L C Wang
- Department of ophthalmology, Peking University Third Hospital, Beijing 100191, China; 2 Department of ophthalmology, The Second Hospital of Zhengzhou. Zhengzhou 450006, Henan, China
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Chen ZZ, Wang LC, Manoharan D, Lee CL, Wu LC, Huang WT, Huang EY, Su CH, Sheu HS, Yeh CS. Low Dose of X-Ray-Excited Long-Lasting Luminescent Concave Nanocubes in Highly Passive Targeting Deep-Seated Hepatic Tumors. Adv Mater 2019; 31:e1905087. [PMID: 31625638 DOI: 10.1002/adma.201905087] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [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: 08/07/2019] [Revised: 10/01/2019] [Indexed: 05/22/2023]
Abstract
Chromium-doped zinc gallate, ZnGa2 O4 :Cr3+ (ZGC), is viewed as a long-lasting luminescence (LLL) phosphor that can avoid tissue autofluorescence interference for in vivo imaging detection. ZGC is a cubic spinel structure, a typical agglomerative or clustered morphology lacking a defined cubic shape, but a sphere-like feature is commonly obtained for the nanometric ZGC. The substantial challenge remains achieving a well-defined cubic feature in nanoscale. The process by which dispersed and well-defined concave cubic ZGC is obtained is described, exhibiting much stronger LLL in UV and X-ray excitation for the dispersed cubic ZGC compared with the agglomerative form that cannot be excited using X-rays with a low dose of 0.5 Gy. The cubic ZGC reveals a specific accumulation in liver and 0.5 Gy used at the end of X-ray excitation is sufficient for imaging of deep-seated hepatic tumors. The ZGC nanocubes show highly passive targeting of orthotopic hepatic tumors.
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Affiliation(s)
- Zheng-Zhe Chen
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Liu-Chun Wang
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Divinah Manoharan
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Chin-Lai Lee
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, 83301, Taiwan
| | - Lai-Chin Wu
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Wan-Ting Huang
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
| | - Eng-Yen Huang
- Department of Radiation Oncology, Chang Gung Memorial Hospital, Kaohsiung, 83301, Taiwan
| | - Chia-Hao Su
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, 83301, Taiwan
- Department of Biomedical Imaging and Radiological Sciences, National Yang Ming University, Taipei, 112, Taiwan
| | - Hwo-Shuenn Sheu
- National Synchrotron Radiation Research Center, Hsinchu, 30076, Taiwan
| | - Chen-Sheng Yeh
- Department of Chemistry, National Cheng Kung University, Tainan, 701, Taiwan
- Center of Applied Nanomedicine, National Cheng Kung University, Tainan, 701, Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
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20
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Peng HM, Wang LC, Chen JY, Zhou YX, Tian H, Lin JH, Guo WS, Lin Y, Qu TB, Guo A, Cao YP, Weng XS. [Microbiology analysis of periprothetic joint infection post total hip and knee arthroplasty of 9 centers in Beijing between 2014 and 2016]. Zhonghua Wai Ke Za Zhi 2019; 57:596-600. [PMID: 31422629 DOI: 10.3760/cma.j.issn.0529-5815.2019.08.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the microbiological test, antibiotic sensitivity and surgical treatment of periprosthetic joint infection(PJI) cases in post total hip arthroplasty (THA) and total knee arthroplasty (TKA) patients. Methods: A retrospective cross-sectional survey was conducted on 318 patients who underwent THA or TKA in 9 clinical centers in Beijing from January 2014 to December 2016.The data of microbiology, antibiotic sensitivity and surgical treatment were collected.The average age of patients was (62.3±13.1) years old (range: 21-86 years old), including 145 males and 173 females.The body mass index was (25.6±3.8) kg/m (2) (range: 15.6-38.1 kg/m(2)). Results: In total, 318 patients had microorganisms detected by periprosthetic tissue culture or synovial fluid culture, 209 cases (65.7%) had Gram-positive bacteria, 29 cases (9.1%) had Gram-negative bacteria, 10 cases (3.1%) had fungi, 3 cases (0.9%) had non-tuberculous mycobacteria, 72 cases (22.6%) were negative, 69 cases (21.7%) had methicillin-resistant bacteria. The antibiotic sensitivity results showed that the overall resistance rate of penicillin, cefuroxime, amoxicillin+clavulanic acid was 79.9%, 69.9%, and 68.1%, respectively; meropenem, vancomycin, and linezolid resistance rate was 0. For the treatment methods of hip and knee PJI, two-stage revision surgery acounted for 72.9% (108/148) and 64.1% (109/170), respectively. One-stage revision surgery accounted for 21.6% (32/148) and 7.6% (13/170), and open debridement surgery accounted for 4.7%(7/148) and 26.4% (45/170). Conclusions: Gram-positive bacteria was still the main pathogen of PJI.The methicillin-resistant bacteria and rare bacteria should be payed attention to. The Majority of hip and knee PJI cases were treated by two-stage revision surgery.
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Affiliation(s)
- H M Peng
- Department of Orthopedics, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - L C Wang
- Department of Orthopedics, Guangdong Provincial People's Hospital, Guangzhou 510080, China
| | - J Y Chen
- Department of Orthopedics, Chinese PLA General Hospital, Beijing 100853, China
| | - Y X Zhou
- Department of Orthopedics, Beijing Jishuitan Hospital, Beijing 100035, China
| | - H Tian
- Department of Orthopedics, Peking University Third Hospital, Beijing 100083, China
| | - J H Lin
- Department of Orthopedics, Peking University People's Hospital, Beijing 100044, China
| | - W S Guo
- Department of Orthopedics, Sino-Japanese Friendship Hospital, Beijing 100029, China
| | - Y Lin
- Department of Orthopedics, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
| | - T B Qu
- Department of Orthopedics, China Rehabilitation Research Center Beijing Boai Hospital, Beijing 100068, China
| | - A Guo
- Department of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - Y P Cao
- Department of Orthopedics, Peking University First Hospital, Beijing 100034, China
| | - X S Weng
- Department of Orthopedics, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
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Cao D, Li DJ, Wang Y, Zhang YH, Chen LY, Wang LC. [Clinical significance of CTP combined with ABIC score in predicting the short-term prognosis of patients with hepatitis B virus-related acute-on-chronic liver failure]. Zhonghua Gan Zang Bing Za Zhi 2019; 27:118-122. [PMID: 30818916 DOI: 10.3760/cma.j.issn.1007-3418.2019.02.009] [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] [Indexed: 02/05/2023]
Abstract
Objective: To investigate the risk factors affecting the short-term prognosis of patients with hepatitis B virus-related acute-on-chronic liver failure (HBV-ACLF), and establish a new scoring model to predict the short-term prognosis of patients. Methods: This study enrolled 222 patients with HBV-ACLF. According to their clinical outcomes during hospitalization and 90 days after discharge, they were divided into survival and death group. Clinical data were collected to calculate the Child-Turcotte-Pugh (CTP), model for end-stage liver disease (MELD), albumin-bilirubin (ALBI), and age-bilirubin-international normalized ratio-creatinine (ABIC) scores for prognosis. Multivariate logistic regression analysis was used to analyze the independent risk factors affecting 90-day mortality in HBV-ACLF patients. Cox regression model was used to establish a new prediction model. Area under the receiver operating characteristic curve was used to calculate short-term prognostic value of the models. K-M survival curve was used to predict the prognosis of patients. Results: CTP and ABIC scores were independent risk factors for 90-day mortality in HBV-ACLF patients, and the risk of death from liver failure had increased with increase of score. Cox regression model established a new predictive model CTP-ABIC = 0.551 × CTP + 0.297 × ABIC. Area under the receiver operating characteristic curve of all three scoring models (CTP, ABIC and CTP-ABIC) were 0.878, 0.829, 0.927, respectively. CTP-ABIC score was superior to the CTP and ABIC score (P value < 0.001). Patients with CTP-ABIC score ≥9.08 had higher mortality rate than patients with CTP-ABIC score < 9.08, and the difference was statistically significant (P < 0.001). Conclusion: All three scoring systems can predict short-term prognosis in patients with HBV-ACLF, but the accuracy of CTP-ABIC is superior.
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Affiliation(s)
- D Cao
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu 610041, China
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Su CH, Li WP, Tsao LC, Wang LC, Hsu YP, Wang WJ, Liao MC, Lee CL, Yeh CS. Enhancing Microcirculation on Multitriggering Manner Facilitates Angiogenesis and Collagen Deposition on Wound Healing by Photoreleased NO from Hemin-Derivatized Colloids. ACS Nano 2019; 13:4290-4301. [PMID: 30883107 DOI: 10.1021/acsnano.8b09417] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A deficiency of nitric oxide (NO) supply has been found to impair wound healing. The exogenous topical delivery of NO is a promising approach to enhance vasodilation and stimulate angiogenesis and collagen deposition. In this study, the CN groups on the surface of Prussian blue (PB) nanocubes were carefully reduced to -CH2-NH2 to conjugate with COOH group of hemin consisting of a Fe-porphyrin structure with strong affinity toward NO. Accordingly, the NO gas was able to coordinate to hemin-modified PB nanocubes. The hemin-modified PB carrying NO (PB-NO) can be responsible to near-infrared (NIR) light (808 nm) exposure to induce the thermo-induced liberation of NO based on the light-to-heat transformation property of PB nanocubes. The NO supply on the incisional wound sites can be readily topically dropped the colloidal solution of PB-NO for receiving NIR light irradiation. The enhanced blood flow was in a controllable manner whenever the wound sites containing PB-NO received NIR light irradiation. The promotion of blood perfusion following the on-demand multidelivery of NO has effectively facilitated the process of wound closure to enhance angiogensis and collagen deposition.
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Affiliation(s)
- Chia-Hao Su
- Institute for Translational Research in Biomedicine , Kaohsiung Chang Gung Memorial Hospital , Kaohsiung 833 , Taiwan
| | | | | | | | | | | | - Min-Chiao Liao
- Institute for Translational Research in Biomedicine , Kaohsiung Chang Gung Memorial Hospital , Kaohsiung 833 , Taiwan
| | - Chin-Lai Lee
- Institute for Translational Research in Biomedicine , Kaohsiung Chang Gung Memorial Hospital , Kaohsiung 833 , Taiwan
| | - Chen-Sheng Yeh
- Department of Medicinal and Applied Chemistry , Kaohsiung Medical University , Kaohsiung 807 , Taiwan
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Wang LC, Mittal AG, Puttmann K, Janzen N, Palmer LS, Yerkes EB, Ryan SL, Gonzales ET, Roth DR, Koh CJ. The changing gender landscape of pediatric urology fellowship: results from a survey of fellows and recent graduates. J Pediatr Urol 2019; 15:51-57. [PMID: 30340928 DOI: 10.1016/j.jpurol.2018.09.001] [Citation(s) in RCA: 5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 09/04/2018] [Indexed: 10/28/2022]
Abstract
INTRODUCTION Women are entering the subspecialty of pediatric urology at an accelerated rate. Gender differences affecting fellowship and job selection have been identified in other fields of medicine. OBJECTIVE The objective of this study was to understand gender differences in pediatric urology fellowship and job selection and how they may affect the workforce. STUDY DESIGN A 47-question electronic survey consisting of questions regarding demographics, residency training, and factors influencing fellowship and job selection was distributed to current fellows and recent graduates in pediatric urology in May 2017. RESULTS A total of 111 recent and current fellows were contacted, and 72% completed the survey (55% female [F] and 45% male [M]; 61% current fellows and 39% recent fellows). Respondents rated factors important in choosing pediatric urology on a scale of 1-5 (1, not important and 5, extremely important), and the top three for both genders were 1-working with children, 2-influential mentors, and 3-bread and butter cases such as inguinal orchiopexy. During residency, 93% of respondents reported having influential mentors in pediatric urology. However, mentorship was more important in fellowship choice for males than females (3.6 F, 4.1 M; P-value = 0.048), and 45% reported having only male mentors. Rating factors important in job choice on a scale of 1-5, respondents reported the top factors as 1-rapport with partners/mentorship (4.5), 2-geography/family preferences (4.3), and 3-participation in mentoring/teaching (3.8). Although most job selection criteria were rated similarly between genders, females rated call schedule higher than males (3.5 F, 2.9 M, P-value = 0.009). Although most females and males (79% of F, 78% of M, P-value = 0.868) sought primarily academic positions, a smaller proportion of females accepted academic positions (52% of F, 72% of M, P-value 0.26), and females reported lower satisfaction regarding the availability of jobs on a scale of 1-5 (1, very dissatisfied and 5, very satisfied; 3.1 F, 3.7 M; P-value = 0.034), particularly in academic positions (3.1 F, 3.7 M; P-value = 0.06). This difference was more pronounced in current fellows than recent graduates and may represent a worsening trend. CONCLUSION Although significant gender differences in fellowship and job selection may exist in other fields, we found that women and men choose pediatric urology fellowships and jobs using similar criteria, which include work-life balance. Gender differences exist in the influence of mentors, indicating a need for more female mentors. While men and women sought similar types of jobs, women were less satisfied with the availability of jobs, particularly academic jobs, than men, which warrants further investigation.
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Affiliation(s)
- L C Wang
- Division of Pediatric Urology, Texas Children's Hospital, Houston TX, USA.
| | - A G Mittal
- Division of Pediatric Urology, Texas Children's Hospital, Houston TX, USA
| | - K Puttmann
- Division of Pediatric Urology, Texas Children's Hospital, Houston TX, USA
| | - N Janzen
- Division of Pediatric Urology, Texas Children's Hospital, Houston TX, USA
| | - L S Palmer
- Department of Pediatric Urology, Cohen Children's Medical Center of New York, New Hyde Park NY, USA
| | - E B Yerkes
- Division of Urology, Lurie's Children's Hospital, Chicago IL, USA
| | - S L Ryan
- Division of Pediatric Urology, Texas Children's Hospital, Houston TX, USA
| | - E T Gonzales
- Division of Pediatric Urology, Texas Children's Hospital, Houston TX, USA
| | - D R Roth
- Division of Pediatric Urology, Texas Children's Hospital, Houston TX, USA
| | - C J Koh
- Division of Pediatric Urology, Texas Children's Hospital, Houston TX, USA
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Huang LQ, Shen W, Qiu T, Zhi YH, Wang LC, Mao SH, Xing X, Shen SH, Jiang RL. Establishment of mouse model of qi-deficiency gastrointestinal failure. J BIOL REG HOMEOS AG 2019; 33:237-244. [PMID: 30693737] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- L Q Huang
- Intensive Care Unit, Zhejiang Provincial Hosptial of TCM, Hangzhou, China
| | - W Shen
- Medical Center Agents, Zhejiang Provincial Hosptial of TCM, Hangzhou, China
| | - T Qiu
- Geriatric Ward, Qingbo District Community Health Service Center, Shangcheng District, Hangzhou, China
| | - Y H Zhi
- Intensive Care Unit, Zhejiang Provincial Hosptial of TCM, Hangzhou, China
| | - L C Wang
- Intensive Care Unit, Zhejiang Provincial Hosptial of TCM, Hangzhou, China
| | - S H Mao
- Intensive Care Unit, Zhejiang Provincial Hosptial of TCM, Hangzhou, China
| | - X Xing
- Intensive Care Unit, Zhejiang Provincial Hosptial of TCM, Hangzhou, China
| | - S H Shen
- Health Management Center, The first affiliated Hospital of Zhejiang University of Traditional Chinese medicine, Hangzhou, China
| | - R L Jiang
- Intensive Care Unit, Zhejiang Provincial Hosptial of TCM, Hangzhou, China
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Liu MK, Wang LC, Hu FL. [Value of serum matrix metalloproteinase 3 in the assessment of early rheumatoid arthritis]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:981-985. [PMID: 30562768] [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: 06/09/2023]
Abstract
OBJECTIVE To investigate the expression level of serum matrix metalloproteinase 3 (MMP3) in early rheumatoid arthritis (ERA) patients with normal C-reaction protein (CRP) or erythrocyte sedimentation rate (ESR), and the significance in disease assessment. METHODS In the study, 133 cases of early RA patients, 25 osteoarthritis (OA) patients and 60 healthy controls in Peking University People's Hospital from 2011 to 2015 were included. The RA patients were further divided into 4 groups according to levels of CRP and ESR: 88 patients with increased CRP and increased ESR, 15 patients with normal CRP and normal ESR, 17 patients with normal CRP but increased ESR, and 13 patients with increased CRP but normal ESR. All the clinical information of the patients was collected, and the serum MMP3 levels of both patients and healthy controls were detected by enzyme-linked immune sorbent assay (ELISA). RESULTS The serum MMP3 level of RA patients with normal CRP and/or normal ESR [(72.89±6.34) μg/L] was obviously higher than that of OA patients [(42.87±4.14) μg/L] (P=0.002) and healthy controls [(31.62±2.88) μg/L] (P<0.001). The serum MMP3 levels of the patients with normal CRP and normal ESR [(47.04±9.64) μg/L] were higher than those of the healthy controls, and there was statistical significance between the two groups (P<0.05). The serum MMP3 levels of the patients with increased CRP but normal ESR [(94.18±9.11) μg/L] and the patients with normal CRP but increased ESR [(79.42±10.60) μg/L] were both higher than those of the OA patients and healthy controls, and there was obvious statistical difference (P<0.05). In the early RA patients with normal CRP and/or normal ESR, the serum MMP3 level was positively correlated with the CRP level (r=0.336, P=0.024). The positive rate of MMP3 in the patients with normal CRP and/or normal ESR was 44.44%, higher than the positive rate of CRP (28.89%) and the positive rate of ESR (37.78%). In these early RA patients, the positive rate was 52.94% in the patients with normal CRP but increased ESR and 53.85% in the patients with increased CRP but normal ESR. CONCLUSION The detection of the serum MMP3 level was significant in the assessment of early RA patients within 2-year duration who had normal CRP or ESR value.
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Affiliation(s)
- M K Liu
- Department of Rheumatology and Immunology, Peking University People's Hospital & Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis (BZ0135) Beijing 100044, China; State Key Laboratory of Natural and Biomimetic Drugs, Peking University School of Pharmaceutical Sciences,Beijing 100191, China; Nanchang University Queen Mary School, Nanchang 330000, China
| | - L C Wang
- Department of Rheumatology and Immunology, Peking University People's Hospital & Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis (BZ0135) Beijing 100044, China; State Key Laboratory of Natural and Biomimetic Drugs, Peking University School of Pharmaceutical Sciences, Beijing 100191, China; Nanchang University Queen Mary School, Nanchang 330000, China
| | - F L Hu
- Department of Rheumatology and Immunology, Peking University People's Hospital & Beijing Key Laboratory for Rheumatism Mechanism and Immune Diagnosis (BZ0135) Beijing 100044, China; State Key Laboratory of Natural and Biomimetic Drugs, Peking University School of Pharmaceutical Sciences, Beijing 100191, China
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Li PP, Zhao YB, Li HJ, Che JM, Zhang ZH, Li ZC, Zhang YY, Wang LC, Liang M, Yi XY, Wang GH. Very high external quantum efficiency and wall-plug efficiency 527 nm InGaN green LEDs by MOCVD. Opt Express 2018; 26:33108-33115. [PMID: 30645467 DOI: 10.1364/oe.26.033108] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Accepted: 11/08/2018] [Indexed: 06/09/2023]
Abstract
We demonstrate very high luminous efficacy InGaN-based green light-emitting diodes (LEDs) grown on c-plane patterned sapphire substrates (PSS) using metal organic chemical vapor deposition (MOCVD). The 527 nm green LEDs show a peak external quantum efficiency (EQE) of 53.3%, a peak wall-plug efficiency (WPE) of 54.1% and a peak luminous efficacy of 329 lm/W, respectively. A high EQE of 38.4%, a WPE of 32.1% and a very low forward voltage of 2.86 V were obtained at a typical working current density of 20 A/cm2. By operating low cost green LEDs at a low current density, our devices (0.5 mm2) demonstrating an EQE and a WPE higher than 50% and an efficacy of 259 lm/W at 4 A/cm2 with an output power of 24 mW. High crystal quality of the InGaN/GaN MQWs was characterized by X-ray diffraction (XRD) and the advantage of the epitaxy design was investigated by APSYS software simulation. These results provide a simple way to achieve very high efficiency InGaN green LEDs.
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Zhang P, Du HB, Tong GD, Li XK, Sun XH, Chi XL, Xing YF, Zhou ZH, Li Q, Chen B, Wang H, Wang L, Jin H, Mao DW, Wang XB, Wu QK, Li FP, Hu XY, Lu BJ, Yang ZY, Zhang MX, Shi WB, He Q, Li Y, Jiang KP, Xue JD, Li XD, Jiang JM, Lu W, Tian GJ, Hu ZB, Guo JC, Li CZ, Deng X, Luo XL, Li FY, Zhang XW, Zheng YJ, Zhao G, Wang LC, Wu JH, Guo H, Mi YQ, Gong ZJ, Wang CB, Jiang F, Guo P, Yang XZ, Shi WQ, Yang HZ, Zhou Y, Sun NN, Jiao YT, Gao YQ, Zhou DQ, Ye YA. Serum hepatitis B surface antigen correlates with fibrosis and necroinflammation: A multicentre perspective in China. J Viral Hepat 2018; 25:1017-1025. [PMID: 29624802 DOI: 10.1111/jvh.12903] [Citation(s) in RCA: 6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 02/22/2018] [Indexed: 12/20/2022]
Abstract
The kinetics of serum hepatitis B surface antigen (HBsAg) during the natural history of hepatitis B virus (HBV) infection has been studied, but the factors affecting them remain unclear. We aimed to investigate the factors affecting HBsAg titres, using data from multicentre, large-sized clinical trials in China. The baseline data of 1795 patients in 3 multicentre trials were studied, and the patients were classified into 3 groups: hepatitis B early antigen (HBeAg)-positive chronic HBV infection (n = 588), HBeAg-positive chronic hepatitis B (n = 596), and HBeAg-negative chronic hepatitis B (n = 611). HBsAg titres in the different phases were compared, and multiple linear progression analyses were performed to investigate the implicated factors. HBsAg titres varied significantly in different phases (P = .000), with the highest (4.60 log10 IU/mL [10%-90% confidence interval: 3.52 log10 IU/mL-4.99 log10 IU/mL]) in patients with HBeAg-positive chronic HBV infection. In all phases, age and HBV DNA were correlated with serum HBsAg level. In HBeAg-positive chronic hepatitis B patients, a negative correlation between HBsAg titres and fibrosis stage was observed. Alanine amonitransferase or necroinflammatory activity was also correlated with HBsAg titres in HBeAg-negative chronic hepatitis B patients. In conclusion, decreased HBsAg titres may be associated with advancing fibrosis in HBeAg-positive chronic hepatitis B patients or increased necroinflammation in those with HBeAg-negative chronic hepatitis B. Our findings may help clinicians better understand the kinetics of HBsAg and provide useful insights into the management of this disease.
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Affiliation(s)
- P Zhang
- Department of Gastroenterology and Hepatology, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China.,Institute of liver disease, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China
| | - H B Du
- Department of Gastroenterology and Hepatology, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China.,Institute of liver disease, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China
| | - G D Tong
- Department of Hepatology, Shenzhen Hospital of Traditional Chinese Medicine, Shenzhen, Guangdong Province, China
| | - X K Li
- Department of Gastroenterology and Hepatology, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China.,Institute of liver disease, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China
| | - X H Sun
- Department of Hepatology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - X L Chi
- Department of Hepatology, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Y F Xing
- Department of Hepatology, Shenzhen Hospital of Traditional Chinese Medicine, Shenzhen, Guangdong Province, China
| | - Z H Zhou
- Department of Hepatology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Q Li
- The Fourth Ward, Fuzhou Infectious Disease Hospital, Fuzhou, Fujian Province, China
| | - B Chen
- Department of Hepatology, The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan Province, China
| | - H Wang
- Department of Infectious Disease, Ruijin Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - L Wang
- Department of Hepatology, Chengdu Infectious Disease Hospital, Chengdu, Sichuan Province, China
| | - H Jin
- Department of Integrated Traditional and Western Medicine on Liver Diseases, Beijing Youan Hospital, Capital Medical University, Beijing, China
| | - D W Mao
- Department of Hepatology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi Province, China
| | - X B Wang
- Department of Integrated Traditional and Western Medicine on Liver Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Q K Wu
- The First Department of Hepatology, Shenzhen No. 3 People's Hospital, Shenzhen, Guangdong Province, China
| | - F P Li
- Department of Hepatology, Shanxi Hospital of Traditional Chinese Medicine, Xi'an, Shanxi Province, China
| | - X Y Hu
- Department of Infectious Disease, The Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan Province, China
| | - B J Lu
- Department of Hepatology, The Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Shenyang, Liaoning Province, China
| | - Z Y Yang
- Department of Integrated Traditional and Western Medicine on Liver Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - M X Zhang
- Department of Integrated Traditional and Western Medicine on Liver Diseases, Shenyang Infectious Disease Hospital, Shenyang, Liaoning Province, China
| | - W B Shi
- Department of Infectious Disease, The First Affiliated Hospital of Anhui Academy of Chinese Medicine, Hefei, Anhui Province, China
| | - Q He
- The First Department of Hepatology, Shenzhen No. 3 People's Hospital, Shenzhen, Guangdong Province, China
| | - Y Li
- Department of Hepatology, The Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, Shandong Province, China
| | - K P Jiang
- Department of Hepatology, Foshan Hospital of Traditional Chinese Medicine, Foshan, Guangdong Province, China
| | - J D Xue
- Department of Hepatology, Shanxi Hospital of Traditional Chinese Medicine, Xi'an, Shanxi Province, China
| | - X D Li
- Department of Hepatology, Hubei Province Hospital of Traditional Chinese Medicine, Wuhan, Hubei Province, China
| | - J M Jiang
- Department of Hepatology, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou, Guangdong Province, China
| | - W Lu
- Department of Infectious Disease, Tianjin Infectious Disease Hospital, Tianjin, China
| | - G J Tian
- Department of Hepatology, Guangdong Hospital of Traditional Chinese Medicine, Guangzhou, Guangdong Province, China
| | - Z B Hu
- Department of Hepatology, The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning, Guangxi Province, China
| | - J C Guo
- Department of Hepatology, Hangzhou No. 6 People's Hospital, Hangzhou, Zhejiang Province, China
| | - C Z Li
- Department of Infectious Disease, Changhai Hospital, The Second Military Medical University, Shanghai, China
| | - X Deng
- Department of Hepatology, Ruikang Hospital, Guangxi University of Chinese Medicine, Nanning, Guangxi Province, China
| | - X L Luo
- Department of Hepatology, Hubei Province Hospital of Traditional Chinese Medicine, Wuhan, Hubei Province, China
| | - F Y Li
- Treatment and Research Center of Infectious Disease, 302 Military Hospital of China, Beijing, China
| | - X W Zhang
- Treatment and Research Center of Infectious Disease, 302 Military Hospital of China, Beijing, China
| | - Y J Zheng
- Department of Hepatology, Shenzhen Hospital of Traditional Chinese Medicine, Shenzhen, Guangdong Province, China
| | - G Zhao
- Department of Hepatology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - L C Wang
- Center of Infectious Disease, Huaxi Hospital, Sichuan University, Chengdu, Sichuan Province, China
| | - J H Wu
- Center of Hepatology, Xiamen Hospital of Traditional Chinese Medicine, Xiamen, Fujian Province, China
| | - H Guo
- Department of Hepatology, The First Affiliated Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Y Q Mi
- Department of Infectious Disease, Tianjin Infectious Disease Hospital, Tianjin, China
| | - Z J Gong
- Department of Infectious Disease, Hubei People's Hospital, Wuhan, Hubei Province, China
| | - C B Wang
- The Fourth Department of Infectious Disease, Linyi People's Hospital, Linyi, Shandong Province, China
| | - F Jiang
- Department of Gastroenterology and Hepatology, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China.,Institute of liver disease, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China
| | - P Guo
- Department of Hepatology, Xiyuan Hospital, China Academy of Chinese medical Science, Beijing, China
| | - X Z Yang
- Institute of liver disease, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China.,Department of Infectious Disease, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China
| | - W Q Shi
- Department of Hepatology, Xinhua Hospital, Zhejiang University of Traditional Chinese medicine, Hangzhou, Zhejiang Province, China
| | - H Z Yang
- Department of Traditional Chinese medicine, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Y Zhou
- Department of Hepatology, Qingdao No. 6 People's Hospital, Qingdao, Shandong Province, China
| | - N N Sun
- Department of Hepatology, Beijing Hospital of Traditional Chinese Medicine, Beijing, China
| | - Y T Jiao
- Shunyi Hospital of Traditional Chinese Medicine, Beijing, China
| | - Y Q Gao
- Department of Hepatology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - D Q Zhou
- Department of Hepatology, Shenzhen Hospital of Traditional Chinese Medicine, Shenzhen, Guangdong Province, China
| | - Y A Ye
- Department of Gastroenterology and Hepatology, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China.,Institute of liver disease, Beijing University of Chinese Medicine Affiliated Dongzhimen Hospital, Beijing, China
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Korinek M, El-Shazly M, Tsai YC, Wang LC, Yu ML, Wu YC, Chen BH, Chang FR. Screening for Anti-allergic Activity of Natural Products. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- M Korinek
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Biotechnology, College of Life Science, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - M El-Shazly
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, Ain-Shams University, Cairo, Egypt
| | - YC Tsai
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - LC Wang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - ML Yu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - YC Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
- Research Center for Natural Products & Drug Development, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - BH Chen
- Department of Biotechnology, College of Life Science, Kaohsiung Medical University, Kaohsiung, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - FR Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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Zhang D, Wang LC, Zhou YH, Liu XM, Li J. [Precision of three-dimensional printed brackets]. Beijing Da Xue Xue Bao Yi Xue Ban 2017; 49:704-708. [PMID: 28816292] [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: 06/07/2023]
Abstract
OBJECTIVE This study was based on digital orthodontic diagnosis work flow for indirect bonding transfer tray model design and three-dimensional (3D) printing, and the aim of this paper was to inspect the dimensional accuracyof 3D printed brackets, which is the foundation of the follow up work and hoped that will illuminate the clinical application of the digital orthodontics work flow. METHODS The samples which consisted of 14 cases of patients with malocclusion from Department of Orthodontics Peking University were selected, including 8 cases with tooth extraction and 6 cases without tooth extraction. All the 14 patients were taken intra-oral scan (Trios 3Shape, Denmark) and cone-beam computed tomography (CBCT, NewTom 3G volumetric scanner, Aperio Service,Italy)shooting after periodontal treatment. STL data and DICOM data were obtained from intraoral scans and CBCT images.Data segmentation, registration, fusion, automatic tooth arrangement, virtual positioning of orthodontic appliance and conversion the coordinates of malocclusion model were all done with self-programming software. The data of 3D printing model with brackets on it were output finally and printed out with EDEN260V (Objet Geometries, Israel) to make indirect bonding transfer tray. Digital vernier caliper was used to measure the length and width of upper and lower left brackets and buccal tubes on those 3D models after removal of surrounding supporting material by ultrasonic vibration and water-spray. Intra-examiner reliability was assessed by using intra-class correlation coefficients (ICC), and one-sample T test was used to compare the measurements with the standard dimensional data of the brackets. RESULTS There were significant differences which range in 0.04-0.17 mm between the 13 items out of the 19 measurement items. Except for the length of the lower left premolars'brackets, mean values of the other items were greater than the test value. CONCLUSION Although the measurement results in the width of brackets and the width and length of the buccal tubes obtained experimentally were slightly larger than the test value,this may not reduce the accuracy of indirect bonding procedure in clinic necessarily. Whether the differences which range in 0.04-0.17 mm would actually affect the retention and positioning of brackets needs to be confirmed by further studies.
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Affiliation(s)
- D Zhang
- Department of Orthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - L C Wang
- Department of Orthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Y H Zhou
- Department of Orthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - X M Liu
- Department of Orthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - J Li
- Department of Orthodontics, Peking University School and Hospital of Stomatology & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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30
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Wang LC, Zhang YY, Chen R, Liu ZQ, Ma J, Li Z, Yi XY, Li HJ, Wang JX, Wang GH, Zhu WH, Li JM. Optically pumped lasing with a Q-factor exceeding 6000 from wet-etched GaN micro-pyramids. Opt Lett 2017; 42:2976-2979. [PMID: 28957223 DOI: 10.1364/ol.42.002976] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2017] [Accepted: 06/29/2017] [Indexed: 06/07/2023]
Abstract
We report the observation of room-temperature optically pumped lasing modes from a single GaN pyramid microcavity on a metallic mirror. The mode at 367.2 nm exhibits a low threshold (0.4-0.5 MW/cm2) and a narrow linewidth (0.054 nm), by which the quality factor can be estimated to be >6000. These lasing behaviors can be attributed to the specific wet-etching approach by selectively etching away defects and pyramid geometry with bottom Ag reflectors for better light confinement. Optical resonances in these pyramids are further investigated in combination with three-dimensional finite-difference time-domain simulations.
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Abstract
The objective of this study was to investigate the manifestations, treatment and outcome of neuropsychiatric (NP) involvement in pediatric systemic lupus erythematosus (SLE) patients. The charts of 185 pediatric patients with SLE diagnosed between 1985 and 2005 in a tertiary referral hospital were retrospectively reviewed. NPSLE were defined using the American College of Rheumatology NPSLE case definitions. NPSLE developed in 34.6% (64/185) of the patients. The mean onset age was 15.2 years. Fourteen patients (21.9%) had NP manifestations on initial diagnosis of SLE. The median duration from the onset of SLE to NP manifestation was 11 months. The most frequent NP manifestations were seizure disorder (84.4%), ischemic stroke (28.1%) and psychosis (21.9%). However, the prevalence of manifestations of NPSLE might be underestimated by the retrospective design of our study. Higher mean C3/C4 levels, less percentage of anti-dsDNA antibodies elevation and higher percentage of elevated anticardiolipin antibodies were observed in NPSLE events than in non-NPSLE events ( P 0.05). The mortality rate of NPSLE patients decreased from 52.2% in 1985–1994 cohort to 27.8% in 1995–2005 cohort. In the past 10 years, the leading cause of death in NPSLE patients was NPSLE itself. NPSLE is common in pediatric SLE patients. It has diverse manifestations and a high mortality.
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Affiliation(s)
- H H Yu
- Department of Pediatrics, National Taiwan University Hospital, Taipei, Taiwan, Republic of China
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Wang DC, Wang LC, Wang LJ, Chen G, Zhao YX, Zhao ZF, Li YH. [Inhibitory effect of imrecoxib combined with lobaplatin on tumor growth and lymph node metastasis of human lung cancer xenografts in nude mice]. Zhonghua Zhong Liu Za Zhi 2016; 38:340-5. [PMID: 27188605 DOI: 10.3760/cma.j.issn.0253-3766.2016.05.004] [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 evaluate the inhibitory effect of imrecoxib combined with lobaplatin on tumor growth and lymph node metastasis of human lung adenocarcinoma xenografts in nude mice, and to explore its possible mechanisms. METHODS Human lung cancer A549 cells were injected into Bal B/c nude mice subcutaneously. Twenty-eight healthy male nude mice were randomly divided into 4 groups: the control group, imrecoxib group, lobaplatin group and imrecoxib combined with lobaplatin group. Each group was treated with appropriate drugs and the tumor size was measured every five days. The expression of ezrin and E-cadherin protein was detected by immunohistochemistry and flow cytometry. Ezrin and E-cadherin mRNA were detected by real-time PCR. RESULTS The tumor inhibition rates of imrecoxib group, lobaplatin group and combination group were 36.7%, 54.6% and 69.2%, respectively. The tumor volumes of imrecoxib group [(905.33±113.31) mm(3)] and combination group [(507.74±77.50) mm(3)] were significantly lower than that of the control group (1355.33±189.04) mm(3) (P<0.05), and the tumor weights were significantly reduced [(1.13±0.14) g, (0.63±0.10) g respectively] vs. (1.69±0.24) g (P<0.05). The expressions of ezrin protein and mRNA in the imrecoxib group and combined treatment group were significantly lower than that of the control group (136.53±35.52, 74.72±19.48 vs. 175.62±21.16 for protein expression level; 0.54±0.03, 0.36±0.03 vs. 1.02±0.02 for mRNA expression level, respectively, P<0.05 for both), while the expression of E-cadherin protein and mRNA in the imrecoxib group and combined treatment group was significantly higher than that of the control group (253.78±38.87, 308.94±24.67 vs. 213.66±30.31 for protein expression level; 2.19±0.02, 3.02±0.02 vs. 1.05±0.03 for mRNA expression level, respectively, P<0.05 for both). There was a significant negative correlation between ezrin protein and E-cadherin protein (r=-0.737, P<0.01), as well as between ezrin mRNA and E-cadherin mRNA (r=-0.977, P<0.01). CONCLUSIONS Administration of imrecoxib combined with lobaphatin has inhibitory effects on the growth of non-small cell lung cancer xenografts and lymph node metastasis via down-regulated ezrin and upregulated E-cadherin. Imrecoxib and lobaplatin have a synergistic antitumor effect.
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Affiliation(s)
- D C Wang
- Department of Respiratory Diseases, the Third Affiliated Hospital, Hebei Medical University, Shijiazhuang 050051, China
| | - L C Wang
- Department of Respiratory Diseases, the Third Affiliated Hospital, Hebei Medical University, Shijiazhuang 050051, China
| | - L J Wang
- Department of Clinical Pharmacy, the First Affiliated Hospital, Hebei Medical University, Shijiazhuang 050051, China
| | - G Chen
- Department of Respiratory Diseases, the Third Affiliated Hospital, Hebei Medical University, Shijiazhuang 050051, China
| | - Y X Zhao
- Department of Respiratory Diseases, the Third Affiliated Hospital, Hebei Medical University, Shijiazhuang 050051, China
| | - Z F Zhao
- Department of Respiratory Diseases, the Third Affiliated Hospital, Hebei Medical University, Shijiazhuang 050051, China
| | - Y H Li
- Department of Respiratory Diseases, the Third Affiliated Hospital, Hebei Medical University, Shijiazhuang 050051, China
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Ao TGBY, Lang ML, Li YQ, Zhao Y, Wang LC, Yang XJ. Cloning and expression analysis of cysteine protease gene (MwCP) in Agropyron mongolicum Keng. Genet Mol Res 2016; 15:gmr7424. [PMID: 26909915 DOI: 10.4238/gmr.15017424] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In this study, a cysteine protease gene (MwCP) from Agropyron mongolicum Keng was isolated using RACE. Sequence analysis indicated that MwCP was 1473 bp, and it contained a 1134-bp open reading frame, which encoded 377 amino acids with a 24-amino acid N-terminal signal peptide. The results indicated that the MwCP protein was a new member of the papain C1A family, and it was predicted to be an extracellular, secretory stable hydrophilic protein. The secondary structure of MwCP was mainly composed of α-helices and random coils, and the space structure primarily contained α-helices, β-sheets, and β-turns. Homology analyses showed the 98% homology between MwCP amino acids and a cysteine protease found in Triticum aestivum (GenBank accession No. AAW21813.1). Analysis of mRNA using semi-quantitative RT-PCR indicated that during a 48-h drought stress period, MwCP was expressed during the 4th hour, and the expression level peaked during the 6th hour before declining to the original level. The results revealed that MwCP was involved in drought-resistant physiological processes of A. mongolicum. Moreover, the MwCP expression levels were highest in leaves, intermediate in roots, and lowest in stems.
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Affiliation(s)
- T G B Y Ao
- College of Agronomy, Agricultural University of Hebei, Baoding, China.,College of Animal Science and Technology, Agricultural University of Hebei, Baoding, China
| | - M L Lang
- College of Life Sciences, Agricultural University of Hebei, Baoding, China
| | - Y Q Li
- College of Animal Science and Technology, Agricultural University of Hebei, Baoding, China
| | - Y Zhao
- College of Agronomy, Agricultural University of Hebei, Baoding, China
| | - L C Wang
- College of Agronomy, Agricultural University of Hebei, Baoding, China
| | - X J Yang
- College of Agronomy, Agricultural University of Hebei, Baoding, China.,College of Life Sciences, Agricultural University of Hebei, Baoding, China.,Key Laboratory of Crop Germplasm in Hebei Province, Agricultural University of Hebei, Baoding, China
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Zhang PP, Meng ZT, Wang LC, Guo LM, Li K. Astragalus polysaccharide promotes the release of mature granulocytes through the L-selectin signaling pathway. Chin Med 2015; 10:17. [PMID: 26161135 PMCID: PMC4497426 DOI: 10.1186/s13020-015-0043-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [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: 06/03/2014] [Accepted: 06/23/2015] [Indexed: 01/03/2023] Open
Abstract
Background This study aims to investigate the leukogenic effect of astragalus polysaccharide (APS), to compare its effect of increasing the numbers of mature granulocytes with that of granulocyte colony-stimulating factor (G-CSF), and to investigate the mechanism. Methods Rats were arbitrarily grouped into four groups (control, cyclophosphamide (CTX), CTX + APS, and CTX + G-CSF groups), and each group was then arbitrarily divided into five subgroups according to the time period since CTX infusion (0, 4, 7, 10, and 14 days). The expression of leukocyte selectin (L-selectin), its ligand, and shedding-related protease on granulocytes was analyzed. Leukocyte counts were obtained. Chemotactic capacity of polymorphonuclear leukocytes (PMNLs) was assessed. Results Both APS and G-CSF restored the expression of L-selectin, P-selectin glycoprotein ligand-1 (PSGL-1), CD11b/CD18, and ADAM17 to normal levels (P > 0.05 vs. control group on each time point), with APS eliciting a greater effect than G-CSF (P = 0.005 on day 7, P < 0.001 on day 10 and 14 for L-selectin; P = 0.038 on day 7, P = 0.001 on day 10, P < 0.001 on day 14 for PSGL-1; P < 0.001 on day 7, 10 and 14 for ADAM17; P < 0.001 on day 7, 10, and 14 for CD11b/CD18). The percentages of the bands and segmented bone marrow (BM) cells in myeloid neutrophils were higher in the CTX + APS group than in the CTX group on day 7 (P = 0.030) and reached normal levels on day 10 (P = 0.547) and 14 (P = 0.431) vs. control group. The ability of APS to increase numbers of PMNLs in peripheral blood after chemotherapy was significantly superior to that of G-CSF 7 days after chemotherapy (P = 0.029 on day 10, P = 0.006 on day 14). Moreover, APS more significantly improved the chemotactic ability of PMNLs among mature BM granulocytes and peripheral blood neutrophils after chemotherapy than did G-CSF (P < 0.001 on day 7, P = 0.001 on day 10 and P = 0.005 on day 14). Conclusions APS promoted the differentiation and chemotactic ability of BM granulocytes via the L-selectin signaling pathway. Electronic supplementary material The online version of this article (doi:10.1186/s13020-015-0043-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ping-Ping Zhang
- Department of Thoracic Medical Oncology, Lung Cancer Diagnosis and Treatment Center, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin, 300060 China.,Department of Radiotherapy, Hubei Cancer Hospital, Wuhan, 430079 China
| | - Zhao-Ting Meng
- Department of Thoracic Medical Oncology, Lung Cancer Diagnosis and Treatment Center, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin, 300060 China
| | - Liu-Chun Wang
- Department of Thoracic Medical Oncology, Lung Cancer Diagnosis and Treatment Center, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin, 300060 China
| | - Lei-Ming Guo
- Tianjin Institute for Biomedicinal Research, Tianjin, 300050 China
| | - Kai Li
- Department of Thoracic Medical Oncology, Lung Cancer Diagnosis and Treatment Center, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer; Key Laboratory of Cancer Prevention and Therapy, Tianjin, 300060 China
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Lin HT, Hsu CH, Tsai HJ, Lin CH, Lo PY, Wang SL, Wang LC. Influenza A plasma and serum virus antibody detection comparison in dogs using blocking enzyme-linked immunosorbent assay. Vet World 2015; 8:580-3. [PMID: 27047138 PMCID: PMC4774716 DOI: 10.14202/vetworld.2015.580-583] [Citation(s) in RCA: 3] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2014] [Revised: 03/31/2015] [Accepted: 04/07/2015] [Indexed: 11/18/2022] Open
Abstract
Background and Aim: The influenza A virus (IAV) is an important zoonotic pathogen with infections also reported in dogs. IAV infections can be detected through the presence of antibodies using the enzyme-linked immunosorbent assay (ELISA). Serum is the only standard sample source; however, there is no information on the availability of other sample sources for IAV antibody detection in dogs. Compared with serum, plasma is more widely employed in most animal hospitals. The object of this study is to investigate whether plasma collected in ethylenediaminetetraacetic acid (EDTA) tubes (EDTA plasma) or heparin tubes (heparin plasma) could be used in the ELISA protocol instead of serum for IAV antibody detection in dogs. Materials and Methods: Totally, 82 matched EDTA plasma and serum sample pairs and 79 matched heparin plasma and serum sample pairs were employed using blocking enzyme-linked immunosorbent assay (bELISA). The agreement and correlation between the plasma (EDTA or heparin plasma) and serum were assessed using the agreement index kappa (kD) calculation and Pearson correlation coefficient, respectively. Results: The agreement index kD of EDTA plasma and serum was 1.0, and that of heparin plasma and serum was 0.85. The Pearson correlation coefficient of EDTA plasma and serum was 0.87 (p<0.01), and that of heparin plasma and serum was 0.82 (p<0.01). Conclusion: The results proved that plasma, especially EDTA plasma, could be substituted for serum in the bELISA test. This might greatly expand the clinical applicability of IAV antibody detection in dogs.
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Affiliation(s)
- H T Lin
- Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, 1 Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - C H Hsu
- Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, 1 Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - H J Tsai
- Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, 1 Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - C H Lin
- Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, 1 Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - P Y Lo
- Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, 1 Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - S L Wang
- Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, 1 Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
| | - L C Wang
- Institute of Veterinary Clinical Sciences, School of Veterinary Medicine, National Taiwan University, 1 Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
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Wu JS, Chen YP, Wang LC, Yang YJ, Deng CW, Hou BX, He ZL, Chen JX. Implication of polymorphisms in DNA repair genes with an increased risk of hepatocellular carcinoma. Genet Mol Res 2014; 13:3812-8. [PMID: 24938468 DOI: 10.4238/2014.may.16.5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We explored the association between 4 XRCC1 (Arg194Trp and Arg399Gln) and XPD (Asp312Asn and Lys751Gln) polymorphisms with the development and prognosis of hepatocellular carcinoma (HCC). A total of 218 cases with HCC and 277 healthy controls were included in the study. Genotyping of the XRCC1 (Arg194Trp and Arg399Gln) and XPD (Asp312Asn and Lys751Gln) polymorphisms was performed in a 384-well plate format on the Sequenom MassARRAY platform. We found that individuals with the XRCC1 399AA genotype had a higher risk of HCC compared with the GG genotype (odds ratio, OR = 1.85, 95% confidence interval, CI = 1.03-3.23). Similarly, individuals carrying the XPD 751GG genotype showed a greatly increased risk of HCC (OR = 2.97, 95%CI = 126- 7.38). Cox regression analysis showed that individuals carrying XPD 751Gln/Gln genotypes had a 0.30-fold increased risk of death from HCC. These results suggest that polymorphisms in XRCC1 and XPD may have functional significance in HCC.
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Affiliation(s)
- J S Wu
- Oncology Department, Hainan Province Nongken Nada Hospital, Danzhou, China
| | - Y P Chen
- Department of Digestive System, Hainan Province Nongken Nada Hospital, Danzhou, China
| | - L C Wang
- Department of General Surgery, Hainan Province Nongken Sanya Hospital, Danzhou, China
| | - Y J Yang
- Department of Digestive System, Hainan Province Nongken Sanya Hospital, Danzhou, China
| | - C W Deng
- Oncology Department, Hainan Province Nongken Nada Hospital, Danzhou, China
| | - B X Hou
- Department of General Surgery, Hainan Province Nongken Sanya Hospital, Danzhou, China
| | - Z L He
- Department of General Surgery, Ninth People's Hospital, Chongqing, China
| | - J X Chen
- Department of General Surgery, Ninth People's Hospital, Chongqing, China
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Wu QJ, Wang LC, Zhou YM, Zhang JF, Wang T. Effects of clinoptilolite and modified clinoptilolite on the growth performance, intestinal microflora, and gut parameters of broilers. Poult Sci 2013; 92:684-92. [PMID: 23436519 DOI: 10.3382/ps.2012-02308] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The purpose of this study was to evaluate the effect of natural clinoptilolite (NCLI) and modified clinoptilolite (MCLI) on broiler performance, gut morphology, and its relation to gut circumstances. A total of two hundred forty 1-d-old male chicks were randomly assigned to 3 treatments, each of which comprised 8 pens of 10 chicks per pen. Birds in the control group were fed the basal diet, whereas those in the experimental groups were fed diets supplemented with NCLI at 2% (NCLI group) or MCLI at 2% (MCLI group) for 42 d. The results showed that compared with the control, supplementation with NCLI or MCLI had no significant (P > 0.05) effects on productive parameters from d 1 to 42. Supplementation with MCLI and NCLI was associated with greater (P < 0.05) villus height in the jejunal and ileal mucosa compared with those areas in the controls from d 1 to 42. However, supplementation with NCLI and MCLI had no significant (P > 0.05) influence on the crypt depth in the jejunal and ileal mucosa compared with those in the controls. Total viable counts of Escherichia coli were significantly (P < 0.05) decreased by MCLI and NCLI from d 1 to 21. The NCLI and MCLI significantly increased the total viable counts of Lactobacillus acidophilus from d 22 to 42. Small intestine and cecal pH values in the MCLI group were found to be lower (P < 0.05) than those in other groups. Total volatile fatty acid concentrations were significantly (P < 0.05) decreased in both experimental groups from d 22 to 42. This study showed that NCLI or MCLI, as feed additives for broilers, had a positive effect on gut parameters by acting on microbial populations of the digestive tract.
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Affiliation(s)
- Q J Wu
- College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, People's Republic of China
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Huang XL, Wang LC, Yi XX. Quantum Brayton cycle with coupled systems as working substance. Phys Rev E Stat Nonlin Soft Matter Phys 2013; 87:012144. [PMID: 23410319 DOI: 10.1103/physreve.87.012144] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Revised: 12/17/2012] [Indexed: 06/01/2023]
Abstract
We explore the quantum version of the Brayton cycle with a composite system as the working substance. The actual Brayton cycle consists of two adiabatic and two isobaric processes. Two pressures can be defined in our isobaric process; one corresponds to the external magnetic field (characterized by F(x)) exerted on the system, while the other corresponds to the coupling constant between the subsystems (characterized by F(y)). As a consequence, we can define two types of quantum Brayton cycle for the composite system. We find that the subsystem experiences a quantum Brayton cycle in one quantum Brayton cycle (characterized by F(x)), whereas the subsystem's cycle is quantum Otto cycle in another Brayton cycle (characterized by F(y)). The efficiency for the composite system equals to that for the subsystem in both cases, but the work done by the total system is usually larger than the sum of the work done by the two subsystems. The other interesting finding is that for the cycle characterized by F(y), the subsystem can be a refrigerator, while the total system is a heat engine. The result in this paper can be generalized to a quantum Brayton cycle with a general coupled system as the working substance.
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Affiliation(s)
- X L Huang
- School of Physics and Electronic Technology, Liaoning Normal University, Dalian 116029, China.
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Liu ZJ, Wang J, Wei XY, Chen P, Wang LC, Lin L, Sun BC, Li K. Predictive value of circulating endothelial cells for efficacy of chemotherapy with Rh-endostatin in non-small cell lung cancer. J Cancer Res Clin Oncol 2012; 138:927-37. [PMID: 22331237 DOI: 10.1007/s00432-012-1167-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Accepted: 01/30/2012] [Indexed: 11/25/2022]
Abstract
PURPOSE The present study was designed to elucidate the fluctuation of activated CECs (aCECs) during different therapies and to investigate their predictive value for efficacy of anti-angiogenesis and chemotherapy in advanced non-small cell lung cancer (NSCLC). METHODS Seventy-two patients were randomized into three arms, treated with concomitant NP (vinorelbine and cisplatin) and Rh-endostatin, Rh-endostatin followed by NP, and single NP up to a maximum of six cycles. Response, time to progression (TTP), and aCECs levels were observed. The correlation between aCECs and efficacy was analyzed. RESULTS We found that TTP was 8.5 months in concomitant NP and Rh-endostatin versus 5.3 months in NP (p = 0.04) and 6.0 months in Rh-endostatin followed by NP. aCECs fluctuated during the therapeutic period, with a significantly high level from baseline on 8th day of Rh-endostatin followed by NP regimen, that is, when single Rh-endostatin was administered for 1 week, and upon completion of therapy in cases of progressive disease in each group (all p < 0.05). When TTP was longer than 10 months, aCECs count difference (∆aCECs, the difference in the aCECs by post-therapeutic amount minus pre-therapeutic amount) was reversely correlated to TTP (p = 0.003, r = -0.647). CONCLUSIONS An improved synergistic effect was achieved from concomitant NP and Rh-endostatin compared with Rh-endostatin followed by NP and single NP. aCECs increased when the disease was aggravated or single Rh-endostatin treatment of Rh-endostatin was administered, while they decreased when a clinical response to the combined therapy was obtained. Our results suggest ∆aCECs as an ideal marker to predict the response to Rh-endostatin combined with chemotherapy.
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Affiliation(s)
- Zhu-Jun Liu
- Department of Thoracic Oncology, Tianjin Lung Cancer Center, Tianjin Cancer Institute and Hospital, Tianjin Medical University, Tianjin 300060, People's Republic of China
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Xu WJ, Huang C, Wang J, Jiang RC, Wang LC, Lin L, Liu ZJ, Sun BC, Li K. Comparison of the effects of recombinant human endostatin and docetaxel on human umbilical vein endothelial cells in different growth states. Chin Med J (Engl) 2011; 124:2883-2889. [PMID: 22040497] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
BACKGROUND Recombinant human endostatin (rh-endostatin, Endostar) has been proved to be an inhibitor of angiogenesis. Docetaxel has been also considered as a common chemotherapeutic agent with inhibition of angiogenesis of malignancies. However, their function has been seldom compared and a best synergism protocol is not determined. This study aimed to compare the effects of two drugs, investigate their combined impact on human umbilical vein endothelial cells (HUVECs), a molecular basis and find ideal protocols to inhibit endothelial cell proliferation. METHODS HUVECs on confluent growth or activated by vascular endothelial growth factor (VEGF) were treated by rh-endostatin or/and docetaxel at respective gradient concentration in following operations as cell proliferation determined by MTT assay, cell cycle distribution, apoptosis and markers of CD146, CD62E and CD105 detected by flow cytometery, the structure of the channel formed by HUVECs measured by tube formation count. RESULTS Rh-endostatin exhibited time dependent inhibition of proliferation while docetaxel showed both time and dose dependent inhibition. HUVECs accumulated in G(0)-G(1) with decreased numbers of cells in G(2) after a single treatment of rh-endostatin or that followed by docetaxel treatment. Cells accumulated in G(2) after both a single docetaxel and simultaneous administration. Both the number of cells in G(0)-G(1) and apoptotic cells were increased by docetaxel followed by rh-endostatin treatment. The number of non-apoptotic cells at G(0)-G(1) was increased by first administering rh-endostatin then docetaxel. Sequential treatment of docetaxel followed by rh-endostatin resulted in the greatest increase in apoptosis (34.7%) and the second highest apoptosis was seen with simultaneous administration (18.2%). Expression of CD146 and CD105 on confluent HUVECs was reduced at certain doses of rh-endostatin and/or docetaxel. However, rh-endostatin reduced CD105 without any apparent impact on either CD146 or CD62E expression, whereas these markers were down-regulated by docetaxel after pre-activation by VEGF. Rh-endostatin treatment maintained tube-like structures for a limited time. In contrast, docetaxel swiftly reduced tube formation. Simultaneous treatment, or docetaxel followed by rh-endostatin, exhibited a stronger inhibition on tube formation than either agent alone. CONCLUSIONS Both rh-endostatin and docetaxel can inhibit HUVEC proliferation while the high apoptotic rate after combined administration was probably owing to different sequent administration by docetaxel followed by rh-endostatin or simultaneous treatment. Both proliferation and adhesion molecules on HUVECs of confluent growth are down-regulated by the two drugs. The rh-endostatin decreased proliferation markers, but only slightly modified adhesion molecules, while both markers were down-regulated by docetaxel on HUVECs activated by VEGF. Rh-endostatin could maintain adhesion of HUVECs at first then induce cells apoptosis to damage tube formation. We hypothesize that it could lead to vascular normalization in short time. In contrast, docetaxel can suppress HUVEC proliferation, adhesion, and reduced tube formation swiftly due to its cytotoxicity. Combined treatments can induce a synergistic inhibition of tube formation.
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Affiliation(s)
- Wen-Jing Xu
- Department of Thoracic Oncology, Tianjin Medical University Cancer Institute and Hospital, Tianjin Key Laboratory of Cancer Prevention and Therapy, Tianjin 300060, China
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Wang LC, Tang KT, Chiu SW, Yang SR, Kuo CT. A bio-inspired two-layer multiple-walled carbon nanotube-polymer composite sensor array and a bio-inspired fast-adaptive readout circuit for a portable electronic nose. Biosens Bioelectron 2011; 26:4301-7. [PMID: 21664119 DOI: 10.1016/j.bios.2011.04.015] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2011] [Revised: 04/06/2011] [Accepted: 04/07/2011] [Indexed: 11/20/2022]
Abstract
We report a fully integrated, portable, battery-operated electronic nose system comprising a bio-inspired two-layer multiple-walled carbon nanotube (MWNT)-polymer composite sensor array, a bio-inspired fast-adaptive readout circuit, and a microprocessor embedded with a pattern recognition algorithm. The two-layer MWNT-polymer composite sensor is simple to operate, and the membrane quality can be easily controlled. These two-layer membranes have improved sensitivity and stability. The fast-adaptive readout circuit responds to the sensor response, while tuning out the long-term constant background humidity, temperature, and odors. This portable electronic nose system successfully classified four complex alcohol samples 40 times for each sample; these samples were sake, sorghum liquor, medical liquor, and whisky.
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Affiliation(s)
- L C Wang
- Department of Materials Science and Engineering, National Chiao Tung University, Taiwan
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Lv H, Wang JC, Wu KL, Gao X, Wang LC, You L, Chen ZJ. Numb regulates meiotic spindle organisation in mouse oocytes. Reprod Fertil Dev 2010; 22:664-72. [PMID: 20353726 DOI: 10.1071/rd09236] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2009] [Accepted: 10/12/2009] [Indexed: 11/23/2022] Open
Abstract
Numb is an adaptor protein that controls the fate of cells in different species through asymmetrical inheritance by sibling cells during division. It has been investigated extensively in mitosis, mostly in neural progenitor cells, but its function in meiosis remains unknown. The present study was designed to investigate the expression, subcellular localisation and functional roles of Numb during mouse oocyte meiotic maturation. Using real-time polymerase chain reaction and western blotting, we found that the expression of Numb increased from the germinal vesicle (GV) to MII stages. Immunofluorescent staining revealed that Numb was mainly concentrated in the GV before meiosis resumption, aggregated in the vicinity of the chromosomes after GV breakdown and then localised to the spindle poles from prometaphase I to MII. Nocodazole treatment resulted in spindle destruction and Numb diffusion into the cytoplasm. However, Numb appeared at the spindle poles again once the spindles had formed when nocodazole-treated oocytes were washed and cultured for spindle recovery. Depletion of Numb by RNA interference resulted in chromosome misalignment, spindle deformation and even doubled spindle formation. Our results suggest that Numb is critical for spindle organisation during mouse oocytes meiosis. The present study provides evidence of a new function for Numb in addition to its action as a cell fate-determining factor.
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Affiliation(s)
- H Lv
- Center for Reproductive Medicine, Provincial Hospital Affiliated to Shandong University, Key Laboratory of Reproductive Medicine, Shandong Province, Jinan 250021, China
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Chang YC, Lin JW, Wang LC, Chen HM, Hwang JJ, Chuang LM. Association of intraocular pressure with the metabolic syndrome and novel cardiometabolic risk factors. Eye (Lond) 2009; 24:1037-43. [PMID: 19816514 DOI: 10.1038/eye.2009.247] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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Huang C, Wang LC, Xiao JY, Ye ZX, Liu ZJ, Xu WJ, Cheng X, Wang J, Li K. [Analysis of cavitation of advanced NSCLC treated by rh-endostatin combined with NP chemotherapy]. Zhonghua Zhong Liu Za Zhi 2008; 30:712-715. [PMID: 19173919] [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: 05/27/2023]
Abstract
OBJECTIVE To study the significance of intra-tumoral cavitation in the patients with advanced NSCLC treated by rh-endostatin plus NP chemotherapy. METHODS Fifty-seven patients with advanced NSCLC were randomly assigned to receive chemotherapy with rh-endostatin plus NP or NP alone. The numbers of activated circulating endothelial cells (aCECs) were measured by flow cytometry. Chest computed tomography was performed to evaluate the efficacy after 2 cycles of chemotherapy. RESULTS Cavitation occurred in 5 of 29 patients in the rh-endostatin plus NP group, but not in any case of the NP group. Of the 5 patients, there were 2 males and 3 females, with pathological types of 3 adenocarcinomas, 1 adenosquamous cell carcinoma and 1 sarcomatoid carcinoma. All of these 5 cases had a peripherally located tumor in the CT scan. There was only one cavity in each case and most of these were roundish. Four cavities were situated in the center of the tumor and another one was eccentric. There were 3 cavities with thin wall and 2 with thick wall. Their average diameter was 2.7 cm. No hemoptysis occurred in these 5 patients. The blood-supply of the tumors showed by perfusion CT images was inhibited in 3 cases after treatment. The average number of aCECs decreased from 323.2/10(5) to 33.0/10(5) after treatment. CONCLUSION Intratumoral cavitation is a peculiar imaging characteristics after anti-angiogenic therapy, which may be caused by inhibition of blood-supply to the tumor. CT perfusion imaging and measurement of activated circulating endothelial cells may be helpful to predict the efficacy of anti-angiogenic therapy combined with chemotherapy.
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Affiliation(s)
- Chun Huang
- Department of Thoracic Oncology, Tianjin Lung Cancer Center, Tianjin Cancer Institute & Hospital, Tianjin Medical University, Tianjin 300060, China
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Farmer AJ, Wang LC, Medenica MM. Interstitial Granulomatous Dermatitis with Plaques. J Cutan Pathol 2008. [DOI: 10.1111/j.0303-6987.2005.320bu.x] [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: 11/30/2022]
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Schneider KC, Bradbeer C, Singh RN, Wang LC, Wilson PW, Burris RH. NITROGEN FIXATION BY CELL-FREE PREPARATIONS FROM MICROORGANISMS. Proc Natl Acad Sci U S A 2006; 46:726-33. [PMID: 16590664 PMCID: PMC222898 DOI: 10.1073/pnas.46.5.726] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- K C Schneider
- DEPARTMENT OF BIOCHEMISTRY, COLLEGE OF AGRICULTURE, UNIVERSITY OF WISCONSIN
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Abstract
Mandibular distraction osteogenesis is a well-developed clinical modality for the treatment of craniofacial deformities and dental arch discrepancies, in combination with orthodontic treatment. However, in our previous study, orthodontic tooth movement into the distraction gap caused severe root resorption. The present study aimed to clarify the osteoclastogenic activity of cells in the distraction gap. We hypothesized that the gene expression of osteoclastogenic- and osteoclast-supporting molecules in osteoblasts and stromal cells would increase at distraction sites during the consolidation period. An animal model experiment involving rabbits was designed for mandibular distraction osteogenesis and subjected to in situ hybridization analysis. The number of osteoclasts was larger in the distraction gap during the early consolidation period than in normal controls, due to an increase of gene expression for osteoclastogenic cytokines in osteoblasts. It was concluded that osteoclastogenic and osteoclastic activities are stimulated at distraction sites during the early consolidation period.
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Affiliation(s)
- L C Wang
- Division of Orthodontics and Dentofacial Orthopedics, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai 950-8575, Japan
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Yang YH, Lai HJ, Huang CM, Wang LC, Lin YT, Chiang BL. Sera from children with active Henoch-Schönlein purpura can enhance the production of interleukin 8 by human umbilical venous endothelial cells. Ann Rheum Dis 2004; 63:1511-3. [PMID: 15479906 PMCID: PMC1754792 DOI: 10.1136/ard.2003.016196] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To investigate the ability of sera from children with active Henoch-Schonlein purpura (HSP) to enhance endothelial interleukin (IL) 8 production and intercellular adhesion molecule (ICAM)-1 expression. METHODS Nine children with active HSP and nine normal healthy children were enrolled. IL8 serum levels of patients and controls at different stages were analysed. Production of IL8 and expression of ICAM-1 by human umbilical venous endothelial cells were detected (ELISA for IL8, flow cytometry for ICAM-1) and compared under various stimuli, including sera of patients at different stages, sera of controls, and medium alone. RESULTS Serum levels of IL8 were increased at the acute stage. Levels of IL8 in supernatants from human umbilical venous endothelial cells (HUVEC) co-cultured with sera from children with active HSP were significantly higher than those from HUVEC without any treatment (p = 0.001), HUVEC treated with inactive sera (p = 0.004), and HUVEC treated with sera from healthy controls (p = 0.004). Sera from patients and from controls did not enhance the expression of ICAM-1 on HUVEC. CONCLUSIONS Some factors may be present in sera from children with active HSP that could activate endothelial cells to produce IL8. This process may account, in part, for the mechanisms of perivascular neutrophil infiltration and leucocytosis in HSP.
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Affiliation(s)
- Y H Yang
- Department of Paediatrics, National Taiwan University Hospital, 7 Chung-Shan South Road, Taipei, Taiwan
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Abstract
The Berry phase in a composite system with one driven subsystem has been studied in this Letter. We choose two coupled spin-1 / 2 systems as the composite system; one of the subsystems is driven by a time-dependent magnetic field. We show how the Berry phases depend on the coupling between the two subsystems, and the relation between the Berry phases of the composite system and those of its subsystems.
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Affiliation(s)
- X X Yi
- Department of physics, Dalian University of Technology, Dalian 116024, China
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Wang LC, Meijer HK, Humbel BM, Jenks BG, Roubos EW. Activity-dependent dynamics of coexisting brain-derived neurotrophic factor, pro-opiomelanocortin and alpha-melanophore-stimulating hormone in melanotrope cells of Xenopus laevis. J Neuroendocrinol 2004; 16:19-25. [PMID: 14962071 DOI: 10.1111/j.1365-2826.2004.01110.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Brain-derived neurotrophic factor (BDNF) is involved as an autocrine factor in the regulation of the secretory activity of the neuroendocrine pituitary melanotrope cells of Xenopus laevis. We studied the subcellular distribution of BDNF in Xenopus melanotropes using a combination of high-pressure freezing, cryosubstitution and immunoelectron microscopy. Presence of BDNF, pro-opiomelanocortin (POMC) and alpha-melanophore-stimulating hormone (alphaMSH) within melanotrope secretory granules was studied by triple-labelling immunoelectron microscopy. In addition, intracellular processing of BDNF was investigated by quantifying the number of immunogold particles in different stages of secretory granule maturation, in animals adapted to black or white background light conditions. The high-pressure freezing technique provides excellent preservation of both cellular ultrastructure and antigenicity. BDNF coexists with POMC and alphaMSH within secretory granules. BDNF-immunoreactivity increases along the secretory granule maturation axis (i.e. from electron-dense, via moderately electron-dense, to electron-lucent secretory granules). Immature, low immunoreactive, electron-dense secretory granules are assumed to contain mainly or even exclusively proBDNF. Strongly immunoreactive electron-lucent secretory granules represent the mature granule stage in which proBDNF has been processed to mature BDNF. Furthermore, in moderately electron-dense secretory granules, immunoreactivity is markedly (+79%) higher in black-adapted than in white-adapted animals, indicating that stimulation of melanotrope cell activity by the black background condition speeds up processing of BDNF from its precursor in this granule stage. It is concluded that, in the Xenopus melanotrope, BDNF biosynthesis and processing occur along the secretory granule maturation axis, together with that of POMC-derived alphaMSH, and that the environmental light condition not only controls the biosynthesis and secretion of BDNF and of POMC end-products, but also regulates the rate of their intragranular processing.
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Affiliation(s)
- L C Wang
- Department of Cellular Animal Physiology, Nijmegen Institute for Neurosciences, University of Nijmegen, The Netherlands.
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