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Bei W, Qian J, Zilu Q, Kai C, Ruili J, Feng H, Liuqing C. Comparing four immunosuppressive agents for chronic spontaneous urticaria-A network meta-analysis. Int Immunopharmacol 2023; 123:110577. [PMID: 37567010 DOI: 10.1016/j.intimp.2023.110577] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 06/23/2023] [Accepted: 06/23/2023] [Indexed: 08/13/2023]
Abstract
BACKGROUND Immunosuppression is an integral part of treating chronic spontaneous urticaria (CSU), but there is no literature to evaluate the efficacy of multiple immunosuppressive agents. OBJECTIVE The comparison of the efficacy, safety, and incidence of adverse effects of four immunosuppressive medicines (tripterygium glycosides, methotrexate, cyclosporine A, and azathioprine) in combination with antihistamines in treating CSU provides a clinical reference and evidence-based medicine for treating CSU. METHODS PUBMED, The Cochrane Library, EMBASE, WANFANG, CNKI, CBM, and clinical trial registration platform were searched to collect relevant randomized controlled trials (RCT) and cohort studies of four immunosuppressive medicines combined with antihistamines for treating CSU. The primary outcomes were the efficacy of weekly urticaria activity score 7 (UAS7) and adverse effects. RESULTS This study pooled data from seven randomized clinical trials with 410 participants. The standardized mean differences for change in UAS7 were 0.10 (95% confidence interval (CI), 0.01 to 0.68) for cyclosporine A plus antihistamine; 0.03 (95% CI, 0.00 to 0.23) for azathioprine plus antihistamine; 0.52 (95% CI, 0.32 to 0.85) for tripterygium glycosides plus antihistamine; and 1.54 (95% CI, 0.64 to 3.67) for methotrexate plus antihistamine. There were no significant differences in side effects between these medicines in the limited number of trials and clinical samples. CONCLUSION Our results indicate that cyclosporine A combined with antihistamine resulted in greater improvements regarding the UAS7 in CSU patients and that tripterygium glycosides are also effective in treating CSU.
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Affiliation(s)
- Wang Bei
- Clinical College of Traditional Chinese Medicine, Hubei University of Chinese Medicine, Wuhan, Hubei 430000, China; Department of Dermatology, Wuhan No. 1 Hospital, Hospital of Traditional Chinese and Western Medicine Affiliated to Hubei University of Chinese Medicine, Wuhan Hospital of Traditional Chinese and Western Medicine Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei 430000, China; Hubei Province & Key Laboratory of Skin Infection and Immunity, Wuhan, Hubei 430000, China
| | - Jiang Qian
- Department of Dermatology, Wuhan No. 1 Hospital, Hospital of Traditional Chinese and Western Medicine Affiliated to Hubei University of Chinese Medicine, Wuhan Hospital of Traditional Chinese and Western Medicine Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei 430000, China; Hubei Province & Key Laboratory of Skin Infection and Immunity, Wuhan, Hubei 430000, China
| | - Qu Zilu
- Department of Dermatology, Wuhan No. 1 Hospital, Hospital of Traditional Chinese and Western Medicine Affiliated to Hubei University of Chinese Medicine, Wuhan Hospital of Traditional Chinese and Western Medicine Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei 430000, China; Hubei Province & Key Laboratory of Skin Infection and Immunity, Wuhan, Hubei 430000, China
| | - Chen Kai
- Department of Dermatology, Wuhan No. 1 Hospital, Hospital of Traditional Chinese and Western Medicine Affiliated to Hubei University of Chinese Medicine, Wuhan Hospital of Traditional Chinese and Western Medicine Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei 430000, China; Hubei Province & Key Laboratory of Skin Infection and Immunity, Wuhan, Hubei 430000, China
| | - Jiang Ruili
- Department of Dermatology, Wuhan No. 1 Hospital, Hospital of Traditional Chinese and Western Medicine Affiliated to Hubei University of Chinese Medicine, Wuhan Hospital of Traditional Chinese and Western Medicine Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei 430000, China; Hubei Province & Key Laboratory of Skin Infection and Immunity, Wuhan, Hubei 430000, China
| | - Hu Feng
- Department of Dermatology, Wuhan No. 1 Hospital, Hospital of Traditional Chinese and Western Medicine Affiliated to Hubei University of Chinese Medicine, Wuhan Hospital of Traditional Chinese and Western Medicine Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei 430000, China; Hubei Province & Key Laboratory of Skin Infection and Immunity, Wuhan, Hubei 430000, China.
| | - Chen Liuqing
- Clinical College of Traditional Chinese Medicine, Hubei University of Chinese Medicine, Wuhan, Hubei 430000, China; Department of Dermatology, Wuhan No. 1 Hospital, Hospital of Traditional Chinese and Western Medicine Affiliated to Hubei University of Chinese Medicine, Wuhan Hospital of Traditional Chinese and Western Medicine Affiliated to Tongji Medical College of Huazhong University of Science and Technology, Wuhan, Hubei 430000, China; Hubei Province & Key Laboratory of Skin Infection and Immunity, Wuhan, Hubei 430000, China.
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Yukun J, Yanmang S, Yan W, Bei W, Shurui F. Improved immune algorithm for sudden cardiac death first aid drones site selection. Int J Med Inform 2023; 173:105025. [PMID: 36898205 DOI: 10.1016/j.ijmedinf.2023.105025] [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: 10/20/2022] [Revised: 02/14/2023] [Accepted: 02/21/2023] [Indexed: 02/27/2023]
Abstract
AIMS Out-of-hospital cardiac arrest (OHCA) requires a fast emergency response, while traditional emergency takes too long to meet the demand. Combining a drone with a defibrillator can provide rapid resuscitation of OHCA patients. The aims are to improve survival in OHCA and to minimize the total system cost. METHODS We developed an integer planning model for sudden cardiac death (SCD) first aid drone siting based on a set covering model with the stability of the siting system as the main constraint, considering the rescue time and total system cost. Using 300 points to simulate potential cardiac arrest locations in the main municipal district of Tianjin, China, the SCD first aid drone siting points are solved using an improved immune algorithm. RESULTS Based on the actual parameters set by the SCD first aid drone, 25 siting points were solved in the main municipal district of Tianjin, China. These 25 sites were able to cover 300 simulated potential demand points. The average rescue time was 127.18 s and the maximum rescue time was 296.99 s. The total system cost was 136,824.46 Yuan. Comparing the pre- and post-algorithm solutions, the system stability was improved by 42.22%, and the maximum number of siting points corresponding to demand points was reduced by 29.41% and the minimum number was increased by 16.86%, which is closer to the average. CONCLUSIONS We propose the SCD emergency system and use the improved immune algorithm for example solving. Comparing the solution results using the pre- and post-improvement algorithms, the cost solved by the post-improvement algorithm is less and the system is more stable.
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Affiliation(s)
- Jia Yukun
- Hebei University of Technology, Tianjin 300400, China.
| | - Su Yanmang
- Hebei University of Technology, Tianjin 300400, China.
| | - Wang Yan
- Tianjin Vocational Institute, Tianjin 300350, China
| | - Wang Bei
- Hebei University of Technology, Tianjin 300400, China
| | - Fan Shurui
- Hebei University of Technology, Tianjin 300400, China
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Xiaoyan C, Wenbin H, Li D, Lijun L, Yan Y, Ting W, Xueyu H, Fang L, Bei W, Bilong F. Construction and application of enhanced recovery after surgery-optimized management system with nurse-led multidisciplinary cooperation. Nurs Open 2023. [PMID: 36855236 DOI: 10.1002/nop2.1696] [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: 02/16/2022] [Revised: 01/10/2023] [Accepted: 02/14/2023] [Indexed: 03/02/2023] Open
Abstract
AIM To evaluate the effect of enhanced recovery after surgery (ERAS)-optimized management system with nurse-led multidisciplinary cooperation. DESIGN A quasi-experimental design. METHODS Nursing department cooperated with medical and clinical department to establish an ERAS-optimized management system. After the system was developed, it was applied in surgical departments of the hospital. Using convenience sampling, 220 selective surgical patients, 82 nurses and 98 doctors from January 1st, 2021 to July 31st, 2021 were selected as the trial group. 220 selective surgical patients, 82 nurses and 98 doctors were selected as the control group from January 1st, 2020 to July 31st, 2020. ERAS observation indicators were compared between the two groups before and 6 months after implementation. The nurse professional identity scores and satisfaction of medical cooperation scores of the two groups at different time points were analysed by repeated analysis of variance. RESULTS After the implementation, ERAS observation indicators in the trial group were better than the control group (p < 0.05). There were significant differences in the group main effect, time main effect and interaction effect of nurse professional identity scores, satisfaction of medical cooperation scores and scores in all dimensions between the two groups (p < 0.05). The scores of the experimental group at 3 months and 6 months after implementation were better than those of the control group (p < 0.05). CONCLUSIONS Enhanced recovery after surgery-optimized management system with nurse-led multidisciplinary cooperation was an effective working method. It could promote patients recovery and enhance nurse professional identity.
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Affiliation(s)
- Chen Xiaoyan
- Nursing Department, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - He Wenbin
- Nursing Department, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Du Li
- Hepatobiliary & Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Li Lijun
- Hepatobiliary & Pancreatic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Yin Yan
- Department of Colorectal and Anal Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Wang Ting
- Urology Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - He Xueyu
- Thoracic Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Lu Fang
- Glandula Thyreoidea &Mammary Gland Surgery, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Wang Bei
- Nursing Department, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Feng Bilong
- Nursing Department, Zhongnan Hospital of Wuhan University, Wuhan, China
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Rouers A, Wong N, Goh YS, Torres‐Ruesta A, Tay MZ, Chang ZW, Fong S, Neo V, Kam IKJ, Yeo NK, Huang Y, Loh CY, Hor PX, Wong JXE, Tan YJ, Macary PA, Qian X, Bei W, Ngoh EZX, Salleh SNM, Wang CI, Poh XY, Rao S, Chia PY, Ong SWX, Lee TH, Lin RJH, Lim C, Teo J, Ren EC, Lye DC, Young BE, Ng LFP, Renia L. Efficient recall of SARS-CoV-2 variant-reactive B cells and T responses in the elderly upon heterologous mRNA vaccines as boosters. J Med Virol 2023; 95:e28258. [PMID: 36305052 PMCID: PMC9874655 DOI: 10.1002/jmv.28258] [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: 07/07/2022] [Revised: 08/30/2022] [Accepted: 10/25/2022] [Indexed: 01/27/2023]
Abstract
Waning antibody levels against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and the emergence of variants of concern highlight the need for booster vaccinations. This is particularly important for the elderly population, who are at a higher risk of developing severe coronavirus disease 2019 (COVID-19) disease. While studies have shown increased antibody responses following booster vaccination, understanding the changes in T and B cell compartments induced by a third vaccine dose remains limited. We analyzed the humoral and cellular responses in subjects who received either a homologous messenger RNA(mRNA) booster vaccine (BNT162b2 + BNT162b2 + BNT162b2; ''BBB") or a heterologous mRNA booster vaccine (BNT162b2 + BNT162b2 + mRNA-1273; ''BBM") at Day 0 (prebooster), Day 7, and Day 28 (postbooster). Compared with BBB, elderly individuals (≥60 years old) who received the BBM vaccination regimen display higher levels of neutralizing antibodies against the Wuhan and Delta strains along with a higher boost in immunoglobulin G memory B cells, particularly against the Omicron variant. Circulating T helper type 1(Th1), Th2, Th17, and T follicular helper responses were also increased in elderly individuals given the BBM regimen. While mRNA vaccines increase antibody, T cell, and B cell responses against SARS-CoV-2 1 month after receiving the third dose booster, the efficacy of the booster vaccine strategies may vary depending on age group and regimen combination.
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Affiliation(s)
- Angeline Rouers
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Nathan Wong
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Yun Shan Goh
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Anthony Torres‐Ruesta
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Matthew Zirui Tay
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Zi Wei Chang
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Siew‐Wai Fong
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Vanessa Neo
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Isaac Kai Jie Kam
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Nicholas Kim‐Wah Yeo
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Yuling Huang
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Chiew Yee Loh
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Pei Xiang Hor
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Joel Xu En Wong
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Yong Jie Tan
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - COVID‐19 Study Group
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Paul A. Macary
- Department of Microbiology and Immunology, Yong Loo Lin School of MedicineNational University of Singapore and National University Health SystemSingaporeSingapore
| | - Xinlei Qian
- Life Sciences InstituteNational University of SingaporeSingaporeSingapore
| | - Wang Bei
- A*STAR Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Eve Zi Xian Ngoh
- A*STAR Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Siti Nazihah Mohd Salleh
- A*STAR Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - Cheng-I Wang
- A*STAR Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | | | - Suma Rao
- National Centre for Infectious DiseasesSingapore,Department of Infectious DiseasesTan Tock Seng HospitalSingapore
| | - Po Ying Chia
- National Centre for Infectious DiseasesSingapore,Department of Infectious DiseasesTan Tock Seng HospitalSingapore,Lee Kong Chian School of MedicineNanyang Technological UniversitySingapore
| | - Sean W. X. Ong
- National Centre for Infectious DiseasesSingapore,Department of Infectious DiseasesTan Tock Seng HospitalSingapore
| | - Tau Hong Lee
- National Centre for Infectious DiseasesSingapore,Department of Infectious DiseasesTan Tock Seng HospitalSingapore
| | - Ray J. H. Lin
- National Centre for Infectious DiseasesSingapore,Department of Infectious DiseasesTan Tock Seng HospitalSingapore
| | - Clarissa Lim
- National Centre for Infectious DiseasesSingapore
| | - Jefanie Teo
- National Centre for Infectious DiseasesSingapore
| | - Ee Chee Ren
- A*STAR Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore
| | - David Chien Lye
- National Centre for Infectious DiseasesSingapore,Department of Infectious DiseasesTan Tock Seng HospitalSingapore,Lee Kong Chian School of MedicineNanyang Technological UniversitySingapore,School of Biological SciencesNanyang Technological UniversitySingapore
| | - Barnaby E. Young
- National Centre for Infectious DiseasesSingapore,Department of Infectious DiseasesTan Tock Seng HospitalSingapore,Lee Kong Chian School of MedicineNanyang Technological UniversitySingapore
| | - Lisa F. P. Ng
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore,National Institute of Health Research, Health Protection Research Unit in Emerging and Zoonotic InfectionsUniversity of LiverpoolLiverpoolUK,Institute of Infection, Veterinary and Ecological SciencesUniversity of LiverpoolLiverpoolUK
| | - Laurent Renia
- A*STAR Infectious Diseases Labs (A*STAR ID Labs), Agency for Science, Technology and Research (A*STAR)SingaporeSingapore,Lee Kong Chian School of MedicineNanyang Technological UniversitySingapore,School of Biological SciencesNanyang Technological UniversitySingapore
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5
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Yueqi Y, Ying Z, Jing L, Hongxiong G, Jianshuang C, Yan X, Hao C, Defu Y, Haiyang H, Xiaoqin X, Bei W, Gengfeng F. The Identification of A Novel HIV-1 Second-Generation Recombinant form (CRF01_AE/CRF07_BC) Among Men Who Have Sex with Men in Jiangsu, China. Curr HIV Res 2021; 19:188-194. [PMID: 33106145 DOI: 10.2174/1570162x18666201026143200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 09/12/2020] [Accepted: 09/25/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND CRF01_AE and CRF07_BC are the two major HIV-1 virus strains circulating in China. The proportion of dominant subtypes (CRF01_AE and CRF07_BC) among MSM in Jiangsu province was over 80%. A large number of URFs have been found in China in recent years. OBJECTIVE This study aimed to report on novel HIV-1 recombinants. METHODS We constructed Phylogenetic trees using the maximum likelihood (ML) method with 1000 bootstrap replicates in IQ-TREE 1.6.8 software and determined recombination breakpoints using SimPlot 3.5.1. RESULTS We identified a novel, second-generation HIV-1 recombinant (JS020202) between CRF01_ AE and CRF07_BC. The analysis of near full-length genome (NFLG) showed there were at least 8 breakpoints in the virus, which differed from any previously identified CRF and URF around the world. CONCLUSION Novel diverse CRF01_AE/07_BC suggested the complexity trends of HIV-1 genetics. The emergency situation of diverse recombinant strains should be monitored continuously.
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Affiliation(s)
- Yin Yueqi
- Department of Epidemiology and Health Statistics, Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China
| | - Zhou Ying
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - Lu Jing
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - Guo Hongxiong
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - Chen Jianshuang
- Department of Epidemiology and Health Statistics, Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China
| | - Xuan Yan
- Department of Epidemiology and Health Statistics, Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China
| | - Cheng Hao
- Wuxi Xinwu District Center for Disease Control and Prevention, Wuxi 214028, China
| | - Yuan Defu
- Department of Epidemiology and Health Statistics, Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China
| | - Hu Haiyang
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - Xu Xiaoqin
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - Wang Bei
- Department of Epidemiology and Health Statistics, Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Public Health, Southeast University, Nanjing 210009, China
| | - Fu Gengfeng
- Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
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Lee CY, Amrun SN, Chee RS, Goh YS, Mak T, Octavia S, Yeo NK, Chang ZW, Tay MZ, Torres‐Ruesta A, Carissimo G, Poh CM, Fong S, Bei W, Lee S, Young BE, Tan S, Leo Y, Lye DC, Lin RTP, Maurer‐Stroh S, Lee B, Wang C, Renia L, Ng LFP. Human neutralising antibodies elicited by SARS-CoV-2 non-D614G variants offer cross-protection against the SARS-CoV-2 D614G variant. Clin Transl Immunology 2021; 10:e1241. [PMID: 33628442 PMCID: PMC7899292 DOI: 10.1002/cti2.1241] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/21/2020] [Accepted: 12/23/2020] [Indexed: 01/06/2023] Open
Abstract
OBJECTIVES The emergence of a SARS-CoV-2 variant with a point mutation in the spike (S) protein, D614G, has taken precedence over the original Wuhan isolate by May 2020. With an increased infection and transmission rate, it is imperative to determine whether antibodies induced against the D614 isolate may cross-neutralise against the G614 variant. METHODS Antibody profiling against the SARS-CoV-2 S protein of the D614 variant by flow cytometry and assessment of neutralising antibody titres using pseudotyped lentiviruses expressing the SARS-CoV-2 S protein of either the D614 or G614 variant tagged with a luciferase reporter were performed on plasma samples from COVID-19 patients with known D614G status (n = 44 infected with D614, n = 6 infected with G614, n = 7 containing all other clades: O, S, L, V, G, GH or GR). RESULTS Profiling of the anti-SARS-CoV-2 humoral immunity reveals similar neutralisation profiles against both S protein variants, albeit waning neutralising antibody capacity at the later phase of infection. Of clinical importance, patients infected with either the D614 or G614 clade elicited a similar degree of neutralisation against both pseudoviruses, suggesting that the D614G mutation does not impact the neutralisation capacity of the elicited antibodies. CONCLUSIONS Cross-reactivity occurs at the functional level of the humoral response on both the S protein variants, which suggests that existing serological assays will be able to detect both D614 and G614 clades of SARS-CoV-2. More importantly, there should be negligible impact towards the efficacy of antibody-based therapies and vaccines that are currently being developed.
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Affiliation(s)
- Cheryl Yi‐Pin Lee
- A*STAR Infectious Diseases LabsAgency for Science, Technology and Research (A*STAR)Singapore
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore
| | - Siti Naqiah Amrun
- A*STAR Infectious Diseases LabsAgency for Science, Technology and Research (A*STAR)Singapore
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore
| | - Rhonda Sin‐Ling Chee
- A*STAR Infectious Diseases LabsAgency for Science, Technology and Research (A*STAR)Singapore
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore
| | - Yun Shan Goh
- A*STAR Infectious Diseases LabsAgency for Science, Technology and Research (A*STAR)Singapore
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore
| | - Tze‐Minn Mak
- National Centre for Infectious DiseasesSingapore
- National Public Health LaboratoryNational Centre for Infectious DiseasesSingapore
| | - Sophie Octavia
- National Centre for Infectious DiseasesSingapore
- National Public Health LaboratoryNational Centre for Infectious DiseasesSingapore
| | - Nicholas Kim‐Wah Yeo
- A*STAR Infectious Diseases LabsAgency for Science, Technology and Research (A*STAR)Singapore
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore
| | - Zi Wei Chang
- A*STAR Infectious Diseases LabsAgency for Science, Technology and Research (A*STAR)Singapore
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore
| | - Matthew Zirui Tay
- A*STAR Infectious Diseases LabsAgency for Science, Technology and Research (A*STAR)Singapore
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore
| | - Anthony Torres‐Ruesta
- A*STAR Infectious Diseases LabsAgency for Science, Technology and Research (A*STAR)Singapore
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore
- Department of BiochemistryYong Loo Lin School of MedicineNational University of SingaporeSingapore
| | - Guillaume Carissimo
- A*STAR Infectious Diseases LabsAgency for Science, Technology and Research (A*STAR)Singapore
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore
| | - Chek Meng Poh
- A*STAR Infectious Diseases LabsAgency for Science, Technology and Research (A*STAR)Singapore
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore
| | - Siew‐Wai Fong
- A*STAR Infectious Diseases LabsAgency for Science, Technology and Research (A*STAR)Singapore
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore
- Department of Biological SciencesNational University of SingaporeSingapore
| | - Wang Bei
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore
| | - Sandy Lee
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore
| | - Barnaby Edward Young
- National Centre for Infectious DiseasesSingapore
- Department of Infectious DiseasesTan Tock Seng HospitalSingapore
- Lee Kong Chian School of MedicineNanyang Technological UniversitySingapore
| | - Seow‐Yen Tan
- Department of Infectious DiseasesChangi General HospitalSingapore
| | - Yee‐Sin Leo
- National Centre for Infectious DiseasesSingapore
- Department of Infectious DiseasesTan Tock Seng HospitalSingapore
- Lee Kong Chian School of MedicineNanyang Technological UniversitySingapore
- Yong Loo Lin School of MedicineNational University of Singapore and National University Health SystemSingapore
| | - David C Lye
- National Centre for Infectious DiseasesSingapore
- Department of Infectious DiseasesTan Tock Seng HospitalSingapore
- Lee Kong Chian School of MedicineNanyang Technological UniversitySingapore
- Yong Loo Lin School of MedicineNational University of Singapore and National University Health SystemSingapore
| | - Raymond TP Lin
- National Public Health LaboratoryNational Centre for Infectious DiseasesSingapore
- Department of Microbiology and ImmunologyYong Loo Lin School of MedicineNational University of SingaporeSingapore
| | - Sebastien Maurer‐Stroh
- A*STAR Infectious Diseases LabsAgency for Science, Technology and Research (A*STAR)Singapore
- National Centre for Infectious DiseasesSingapore
- National Public Health LaboratoryNational Centre for Infectious DiseasesSingapore
- Department of Biological SciencesNational University of SingaporeSingapore
- Bioinformatics InstituteAgency for Science Technology and Research (A*STAR)Singapore
| | - Bernett Lee
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore
| | - Cheng‐I Wang
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore
| | - Laurent Renia
- A*STAR Infectious Diseases LabsAgency for Science, Technology and Research (A*STAR)Singapore
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore
| | - Lisa FP Ng
- A*STAR Infectious Diseases LabsAgency for Science, Technology and Research (A*STAR)Singapore
- Singapore Immunology NetworkAgency for Science, Technology and Research (A*STAR)Singapore
- Department of BiochemistryYong Loo Lin School of MedicineNational University of SingaporeSingapore
- National Institute of Health ResearchHealth Protection Research Unit in Emerging and Zoonotic InfectionsUniversity of LiverpoolLiverpoolUK
- Institute of Infection, Veterinary and Ecological SciencesUniversity of LiverpoolLiverpoolUK
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Li Y, Minzhang C, Minghui M, Xinmiao H, Laixin L, Bei W, Weihai Z, Wei Z, Yumei G, Kongnakorn T, Xiao Y, Peng S, Hughes D, Dashdorj N, Hach T. Improvement of long-term risks of cardiovascular events associated with community-based disease management in Chinese patients of the Xinjiang autonomous region of China. BMC Public Health 2020; 20:1034. [PMID: 32600440 PMCID: PMC7325287 DOI: 10.1186/s12889-020-09157-8] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Accepted: 06/22/2020] [Indexed: 12/03/2022] Open
Abstract
BACKGROUND A recent community-based disease management (CBDM) pilot study reported a 20.5% prevalence of hypertension and a 0.5 and 3.6% prevalence of stroke and coronary heart disease (CHD), respectively, in an elderly population (mean age 65 years) in the Xin Jiang autonomous region of China. The CBDM was initiated in 2013 as an essential public health service; however, the potential long-term impact of CBDM on cardiovascular (CV: CHD and stroke) events is unknown. The objective of the study was to understand the long-term impact of CBDM interventions on CV risk factors using disease-model simulation based on a single-arm experimental study. METHODS A discrete event simulation was developed to evaluate the impact of CBDM on the long-term CV risk among patients with hypertension, in China's Xin Jiang autonomous region. The model generated pairs of identical patients; one receives CBDM and one does not (control group). Their clinical courses were simulated based on time to CV events (CHD and strokes), which are estimated using published risk equations. The impact of CBDM was incorporated as improvement in systolic blood pressure (SBP) based on observations from the CBDM study. The simulation estimated the number of CV events over patients' lifetimes. RESULTS During a 2-year follow up, the CBDM led to an average reduction of 8.73 mmHg in SBP from baseline, and a 42% reduction in smoking. The discrete event simulation showed that, in the control group, the model estimated incidence rates of 276, 1789, and 616 per 100,000 individuals for lifetime CHD, stroke, and CV-related death, respectively. The impact of CBDM on SBP translated into reductions of 8, 28, and 23% in CHD, stroke, and CV-related deaths, respectively. Taking into account CBDM's reduction of both SBP and smoking, deaths from CHD, stroke, and CV-related deaths were reduced by 12, 30, and 26%, respectively. CONCLUSIONS The implementation of CBDM in China's Xinjiang autonomous region is expected to significantly reduce incidences of CHD, strokes, and CV-related deaths.
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Affiliation(s)
- Yang Li
- School of Public Health, Peking University, No. 38 Xueyuan Road, Haidian District, 100191, Beijing, China
| | - Cai Minzhang
- School of Public Health, Peking University, No. 38 Xueyuan Road, Haidian District, 100191, Beijing, China
| | - Ma Minghui
- Health and Family Planning Commission of Xinjiang Uygur Autonomous Region, Urumqi, China, No.191 Longquan Street Tianshan Region, Urumqi, 830000, Xinjiang, China
| | - Huang Xinmiao
- Health and Family Planning Commission of Xinjiang Uygur Autonomous Region, Urumqi, China, No.191 Longquan Street Tianshan Region, Urumqi, 830000, Xinjiang, China
| | - Liu Laixin
- Xinjiang Uygur Autonomous Region Center for Disease Control and Prevention, Urumqi, China, No.380, No.1 Jianquan Street Tianshan Region, Urumqi, 830000, Xinjiang, China
| | - Wang Bei
- Novartis Pharmaceuticals China, No.4218 Jinke Road ZhangJiang Hi-Tech Park, Pudong, 201203, Shanghai, China
| | - Zhu Weihai
- Health and Family Planning Commission of Xinjiang Uygur Autonomous Region, Urumqi, China, No.191 Longquan Street Tianshan Region, Urumqi, 830000, Xinjiang, China
| | - Zhe Wei
- Xinjiang Uygur Autonomous Region Center for Disease Control and Prevention, Urumqi, China, No.380, No.1 Jianquan Street Tianshan Region, Urumqi, 830000, Xinjiang, China
| | - Guan Yumei
- Shanxi Province Weinan City Center for Disease Control and Prevention, Weinan, China, No.5 Zhanbei Road, Weinan City, 714000, Shanxi, China
| | | | - Ying Xiao
- Evidera, Metro Building, 6th Floor, 1 Butterwick, London, W6 8DL, UK
| | - Siyang Peng
- Evidera, Metro Building, 6th Floor, 1 Butterwick, London, W6 8DL, UK
| | - David Hughes
- Sandoz International AG, Lichtstrasse 35, 4056, Basel, Switzerland
| | | | - Thomas Hach
- Novartis Pharma AG, Fabrikstrasse 12-1.03.14A, 4056, Basel, Switzerland.
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Serene TEL, G SV, Padmakumar JS, Terence HCW, Keem LJ, Bei W, Winston WWL. Predictive value of post-operative drain amylase levels for post-operative pancreatic fistula. Ann Hepatobiliary Pancreat Surg 2018; 22:397-404. [PMID: 30588532 PMCID: PMC6295369 DOI: 10.14701/ahbps.2018.22.4.397] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 08/30/2018] [Accepted: 09/03/2018] [Indexed: 12/14/2022] Open
Abstract
Backgrounds/Aims Traditionally, surgically placed pancreatic drains are removed, at the discretion of the operating surgeon. Moving towards enhanced recovery after surgery (ERAS), we looked for predictors for early drain removal. The purpose of this paper was to establish which postoperative days' (POD) drain amylase is most predictive against post-operative pancreatic fistula (POPF). Methods We conducted a retrospective study of 196 patients who underwent pancreatic resection at our institute from January 2006 to October 2013. Drain amylase levels were routinely measured. The International Study Group of Pancreatic Fistula (ISGPF) definition of POPF, and clinical severity grading were used. Results 5.1% (10 of 196) patients developed ISGPF Grades B and C POPF. Negative predictive value of developing significant POPF, if drain amylase values were low on PODs 1 and 3 was 98.7% (95% CI: 0.93-1.00). This translated to confidence in removing surgically placed pancreatic drains, at POD 1 and 3 when drain amylase values are low. Conclusions Patients with low drain amylase values on POD 1 and 3, are unlikely to develop POPF and may have pancreatic drains removed earlier.
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Affiliation(s)
| | | | | | | | - Low Jee Keem
- Department of General Surgery, Tan Tock Seng Hospital, Singapore
| | - Wang Bei
- Department of General Surgery, Tan Tock Seng Hospital, Singapore
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Yixuan W, Bei W, Menene NKONIKA, Hongyu D, Hongjun S. The Ultrasonographic Findings of Appendiceal Diseases: Benign and Malignant. Advanced Ultrasound in Diagnosis and Therapy 2018. [DOI: 10.37015/audt.2018.180815] [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: 11/06/2022] Open
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10
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Selby LKE, Tay RXY, Woon WWL, Low JK, Bei W, Shelat VG, Pang TCY, Junnarkar SP. Validity of the Barcelona Clinic Liver Cancer and Hong Kong Liver Cancer staging systems for hepatocellular carcinoma in Singapore. J Hepatobiliary Pancreat Sci 2017; 24:143-152. [PMID: 28012284 DOI: 10.1002/jhbp.423] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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: 02/05/2023]
Abstract
BACKGROUND Staging is vital in guiding therapeutic approach in patients diagnosed with hepatocellular carcinoma (HCC). Our study's goal is to compare paradigms in the Barcelona Clinic Liver Cancer (BCLC) and Hong Kong Liver Cancer (HKLC) systems, and evaluate the use of both in a local context, comparing their prognostic ability and therapeutic efficacy in the management of HCC. METHODS Seven hundred and sixty-six patients diagnosed between 2010 and 2015 were identified and staged according to BCLC and HKLC. Both system's performances were compared using Akaike information criterion (AIC), bootstrap concordance-index (c-index), and through Kaplan-Meier survival curves of patients who came under HKLC stages 1, 2, and 3 and the individual BCLC stages. Independent prognostic factors of survival were identified using univariate and multivariate analyses. RESULTS According to AIC and c-index, HKLC (AIC = 5,711, c-index = 0.74) has equivalent prognosticating value as BCLC (AIC = 5,764, c-index = 0.72). Through Kaplan-Meier curves, we determined that more aggressive treatments resulted in better outcomes. Particularly for patients under BCLC stage C, patients who followed the HKLC system's recommended treatments performed markedly better. CONCLUSIONS In our patient population, the HKLC system is comparable to the BCLC system in prognosticating patients, but is suggested to have better performance in guiding treatment.
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Affiliation(s)
- Li Kim E Selby
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Rosanna X Y Tay
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Winston W L Woon
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of General Surgery, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore 308433
| | - Jee Keem Low
- Department of General Surgery, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore 308433
| | - Wang Bei
- Department of General Surgery, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore 308433
| | - Vishalkumar G Shelat
- Department of General Surgery, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore 308433
| | - Tony C Y Pang
- Discipline of Surgery, The University of Sydney, Sydney, NSW, Australia
- Department of Surgery, Westmead Hospital, Sydney, NSW, Australia
| | - Sameer P Junnarkar
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
- Department of General Surgery, Tan Tock Seng Hospital, 11 Jalan Tan Tock Seng, Singapore 308433
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Xiao-ai L, Bei W, Xiao-hong X, Lei P, Bin W, Xiao-xue D, Chen-hui Z, Qi-wei D. Curcumin re-sensitizes multidrug resistant (MDR) breast cancer to cisplatin through inducing autophagy by decreasing CCAT1 expression. RSC Adv 2017. [DOI: 10.1039/c7ra02994b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Multidrug resistance (MDR) is a major obstacle to the chemotherapeutic treatment of breast cancer.
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Affiliation(s)
- Lv Xiao-ai
- Department of Breast Surgery
- The First Affiliated Hospital of Zhejiang Chinese Medicine University
- Hangzhou
- China
| | - Wang Bei
- Department of Breast Surgery
- The First Affiliated Hospital of Zhejiang Chinese Medicine University
- Hangzhou
- China
| | - Xu Xiao-hong
- Department of Breast Surgery
- The First Affiliated Hospital of Zhejiang Chinese Medicine University
- Hangzhou
- China
| | - Pan Lei
- Department of Breast Surgery
- The First Affiliated Hospital of Zhejiang Chinese Medicine University
- Hangzhou
- China
| | - Wang Bin
- Department of Breast Surgery
- The First Affiliated Hospital of Zhejiang Chinese Medicine University
- Hangzhou
- China
| | - Dong Xiao-xue
- Department of Breast Surgery
- The First Affiliated Hospital of Zhejiang Chinese Medicine University
- Hangzhou
- China
| | - Zheng Chen-hui
- Department of Breast Surgery
- The First Affiliated Hospital of Zhejiang Chinese Medicine University
- Hangzhou
- China
| | - Du Qi-wei
- Department of Breast Surgery
- The First Affiliated Hospital of Zhejiang Chinese Medicine University
- Hangzhou
- China
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Li Y, Minzhang C, Minghui M, Xinmiao H, Laixin L, Bei W, Minglei Z, Weihai Z, Wei Z, Yumei G, Kongnakorn T, Peng S, Hach T. GW27-e1255 Improvement of long term risks of cardiovascular events associated with community based disease management in chinese patients of the xin jiang autonomous region of china. J Am Coll Cardiol 2016. [DOI: 10.1016/j.jacc.2016.07.286] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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Bei W. Effects of endocannabinoids system on glucose metabolism of chronic intermittent hypoxia rats. Sleep Med 2015. [DOI: 10.1016/j.sleep.2015.02.469] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Tao L, Shengjun L, Bowen Z, Bei W, Dayong N, Zeng C, Ying Y, Ning W, Weifeng Z. Supercapacitor electrode with a homogeneously Co3O4-coated multiwalled carbon nanotube for a high capacitance. Nanoscale Res Lett 2015; 10:208. [PMID: 25995711 PMCID: PMC4437991 DOI: 10.1186/s11671-015-0915-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Accepted: 04/26/2015] [Indexed: 05/27/2023]
Abstract
Cobalt oxide (Co3O4) was homogeneously coated on multiwalled carbon nanotube through a simple chemical deposition method and employed in supercapacitor electrodes. SEM image indicated the uniform distribution of Co3O4 nanoparticles on the surface of the multiwalled carbon nanotube. A maximum specific capacitance of 273 Fg(-1) was obtained at the charge-discharge current density of 0.5 Ag(-1). After 500 cycles of continuous charge-discharge process, about 88% of the initial capacity could be retained.
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Affiliation(s)
- Li Tao
- />Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng, 475001 China
| | - Li Shengjun
- />Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng, 475001 China
| | - Zhang Bowen
- />Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng, 475001 China
| | - Wang Bei
- />Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng, 475001 China
| | - Nie Dayong
- />Department of Basic Courses, Yellow River Conservancy Technical Institute, Kaifeng, 475001 China
| | - Chen Zeng
- />Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng, 475001 China
| | - Yan Ying
- />Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng, 475001 China
| | - Wan Ning
- />Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng, 475001 China
| | - Zhang Weifeng
- />Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng, 475001 China
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Vallée JP, Hauwel M, Lepetit-Coiffé M, Bei W, Montet-Abou K, Meda P, Gardier S, Zammaretti P, Kraehenbuehl TP, Herrmann F, Hubbell JA, Jaconi ME. Embryonic stem cell-based cardiopatches improve cardiac function in infarcted rats. Stem Cells Transl Med 2012. [PMID: 23197784 DOI: 10.5966/sctm.2011-0028] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Pluripotent stem cell-seeded cardiopatches hold promise for in situ regeneration of infarcted hearts. Here, we describe a novel cardiopatch based on bone morphogenetic protein 2-primed cardiac-committed mouse embryonic stem cells, embedded into biodegradable fibrin matrices and engrafted onto infarcted rat hearts. For in vivo tracking of the engrafted cardiac-committed cells, superparamagnetic iron oxide nanoparticles were magnetofected into the cells, thus enabling detection and functional evaluation by high-resolution magnetic resonance imaging. Six weeks after transplantation into infarcted rat hearts, both local (p < .04) and global (p < .015) heart function, as well as the left ventricular dilation (p < .0011), were significantly improved (p < .001) as compared with hearts receiving cardiopatches loaded with iron nanoparticles alone. Histological analysis revealed that the fibrin scaffolds had degraded over time and clusters of myocyte enhancer factor 2-positive cardiac-committed cells had colonized most of the infarcted myocardium, including the fibrotic area. De novo CD31-positive blood vessels were formed in the vicinity of the transplanted cardiopatch. Altogether, our data provide evidence that stem cell-based cardiopatches represent a promising therapeutic strategy to achieve efficient cell implantation and improved global and regional cardiac function after myocardial infarction.
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Affiliation(s)
- Jean-Paul Vallée
- Department of Radiology, Geneva University Hospitals and University of Geneva, Switzerland
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