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Lu WJ, Zhang MS, Lu DL, Li ZW, Yang ZD, Wu L, Ni JT, Chen WD, Deng JJ, Luo XC. Sustainable valorizing high-protein feather waste utilization through solid-state fermentation by keratinase-enhanced Streptomyces sp. SCUT-3 using a novel promoter. Waste Manag 2024; 174:528-538. [PMID: 38134540 DOI: 10.1016/j.wasman.2023.12.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 11/24/2023] [Accepted: 12/08/2023] [Indexed: 12/24/2023]
Abstract
Feather waste, a rich source of proteins, has traditionally been processed through high-temperature puffing and acid-base hydrolysis, contributing to generation of greenhouse gases and H2S. To address this issue, we employed circular economy techniques to recover the nutritional value of feather waste. Streptomyces sp. SCUT-3, an efficient proteolytic and chitinolytic bacterium, was isolated for feather degradation previously. This study aimed to valorize feather waste for feed purposes by enhancing its feather transformation ability through promoter optimization. Seven promoters were identified through omics analysis and compared to a common Streptomyces promoter ermE*p. The strongest promoter, p24880, effectively enhanced the expression of three candidate keratinases (Sep39, Sep40, and Sep53). The expression efficiency of double-, triple-p24880 and sandwich p24880-sep39-p24880 promoters were further verified. The co-overexpression strain SCUT-3-p24880-sep39-p24880-sep40 exhibited a 16.21-fold increase in keratinase activity compared to the wild-type. Using this strain, a solid-state fermentation process was established that increased the feather/water ratio (w/w) to 1:1.5, shortened the fermentation time to 2.5 days, and increased soluble peptide and free amino acid yields to 0.41 g/g and 0.14 g/g, respectively. The resulting has high protein content (90.49 %), with high in vitro digestibility (94.20 %). This method has the potential to revolutionize the feather waste processing industry.
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Affiliation(s)
- Wen-Jun Lu
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Panyu District, Guangzhou, Guangdong 510006, China
| | - Ming-Shu Zhang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Panyu District, Guangzhou, Guangdong 510006, China
| | - De-Lin Lu
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Panyu District, Guangzhou, Guangdong 510006, China
| | - Zhi-Wei Li
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Panyu District, Guangzhou, Guangdong 510006, China
| | - Zhen-Dong Yang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Panyu District, Guangzhou, Guangdong 510006, China
| | - Lei Wu
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Panyu District, Guangzhou, Guangdong 510006, China
| | - Jing-Tao Ni
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Panyu District, Guangzhou, Guangdong 510006, China
| | - Wei-Dong Chen
- Institute of Animal Sciences, Guangdong Academy of Agricultural Sciences, Guangzhou, 510640, China
| | - Jun-Jin Deng
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Panyu District, Guangzhou, Guangdong 510006, China; Agro-biological Gene Research Center, Guangdong Academy of Agricultural Sciences, State Key Laboratory of Swine and Poultry Breeding Industry, Guangdong Provincial Key Laboratory of Crop Germplasm Resources Conservation and Utilization, Guangzhou 510640, China.
| | - Xiao-Chun Luo
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou Higher Education Mega Center, Panyu District, Guangzhou, Guangdong 510006, China.
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Zhang SS, Du J, Cui N, Yang X, Zhang L, Zhang WX, Yue M, Wu YX, Yang T, Zhang XA, Yang ZD, Lv HD, Lu QB, Liu W. Clinical efficacy of immunoglobulin on the treatment of severe fever with thrombocytopenia syndrome: a retrospective cohort study. EBioMedicine 2023; 96:104807. [PMID: 37738834 PMCID: PMC10520313 DOI: 10.1016/j.ebiom.2023.104807] [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: 02/26/2023] [Revised: 08/29/2023] [Accepted: 09/05/2023] [Indexed: 09/24/2023] Open
Abstract
BACKGROUND Optimal treatment strategy for severe fever with thrombocytopenia syndrome (SFTS) remained unknown. We aimed to evaluate the efficacy of intravenous immunoglobulin (IVIG) on SFTS. METHODS A retrospective cohort study was conducted based on medical records of the laboratory-confirmed SFTS patients hospitalized during 2010-2020 in the 154th hospital, China. A 1:1 propensity score matching with age, sex, the interval from symptom onset to admission, presence of chronic viral hepatitis, diabetes and disease severity was performed between Non-IVIG group (supportive therapy) and IVIG group (IVIG plus supportive therapy). The matching variables were adjusted to compare the case fatality rates (CFRs), viral load and laboratory parameters between the two groups. Risk ratio (RR) and 95% confidence interval (CI) were reported. FINDINGS Totally 2219 SFTS patients were recruited. CFRs were significantly higher in 1051 patients in IVIG group than 1168 patients in Non-IVIG group (19.0% vs. 4.6%, RR = 4.30, 95% CI 3.12-5.93). The difference remained significant after matching (17.2% vs. 5.1%, RR = 4.02, 95% CI 2.71-5.97). The CFR of IVIG group was significantly higher in all age groups, two IVIG therapy delay groups and two therapy duration groups compared to that of Non-IVIG group (all P < 0.05). IVIG therapy was related to higher viral loads and reduced counts of lymphocytes, T cells, CD4+ T cells and natural killer cells in the blood (all P < 0.05). INTERPRETATION No obvious efficacy of IVIG in saving life or improving outcome of SFTS was observed. Caution is needed for clinical physicians to continue prescribing IVIG for SFTS patients. FUNDING Natural Science Foundation of China.
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Affiliation(s)
- Shan-Shan Zhang
- Department of Laboratorial Science and Technology & Vaccine Research Center, School of Public Health, Peking University, Beijing, China; Center for Infectious Disease and Policy Research & Global Health and Infectious Diseases Group, Peking University, Beijing, China
| | - Juan Du
- Center for Infectious Disease and Policy Research & Global Health and Infectious Diseases Group, Peking University, Beijing, China
| | - Ning Cui
- The 154th Hospital, Xinyang, China
| | - Xin Yang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | | | - Wan-Xue Zhang
- Center for Infectious Disease and Policy Research & Global Health and Infectious Diseases Group, Peking University, Beijing, China
| | - Ming Yue
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China; Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China
| | - Yong-Xiang Wu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Tong Yang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Xiao-Ai Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | | | | | - Qing-Bin Lu
- Department of Laboratorial Science and Technology & Vaccine Research Center, School of Public Health, Peking University, Beijing, China; Center for Infectious Disease and Policy Research & Global Health and Infectious Diseases Group, Peking University, Beijing, China; Key Laboratory of Epidemiology of Major Diseases (Peking University), Ministry of Education, Beijing, China.
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China; Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, China; School of Public Health, Anhui Medical University, Hefei, China.
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3
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Li JC, Ding H, Wang G, Zhang S, Yang X, Wu YX, Peng XF, Zhang XA, Yang ZD, Cui N, Li H, Liu W. Dynamics of neutralizing antibodies against severe fever with thrombocytopenia syndrome virus. Int J Infect Dis 2023; 134:95-98. [PMID: 37247691 DOI: 10.1016/j.ijid.2023.05.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 05/03/2023] [Accepted: 05/17/2023] [Indexed: 05/31/2023] Open
Abstract
OBJECTIVES Severe fever with thrombocytopenia syndrome (SFTS) virus (SFTSV) is an emerging tick-borne bunyavirus with a high pathogenicity. Little is known about the longitudinal dynamics of the SFTSV-specific neutralizing antibody (NAb) and the related factors in patients with SFTS. METHODS A prospective cohort study of patients with laboratory-confirmed SFTS were conducted. Antiglomerulonephritis-immunoglobulin G (anti-Gn-IgG) and NAb titers were examined in serially collected serum samples, and their dynamic features were analyzed. RESULTS NAb was initially detected at 15 days after symptom onset in surviving patients with SFTS, with positive rates of 37.21% (16/43), whereas neither anti-Gn-IgG antibody nor NAb was detected in patients with fatal SFTS during their hospitalization. The NAb levels reached the peak at 2 months after symptom onset, and then gradually declined, with a rapid downward trend from 6 months to 4 years and a relatively slow downward trend from 5 to 10 years. There was a positive correlation between NAb and anti-Gn-IgG titers in surviving patients with SFTS (r = 0.699, P <0.001). Patients with a mild illness or low viral load experienced early NAb seroconversion. Six different dynamic patterns of NAb were noted in surviving patients. CONCLUSION These data provide useful information regarding the dynamic changes in NAb in patients with SFTS during the acute and convalescent phases and the follow-up period.
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Affiliation(s)
- Jia-Chen Li
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, People's Republic of China; Centre for Disease Prevention and Control in Northern Theater Command, Shenyang, People's Republic of China
| | - Heng Ding
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, People's Republic of China
| | - Gang Wang
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, People's Republic of China
| | - Shuo Zhang
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, People's Republic of China; College of Life Sciences, Southwest Forestry University, Kunming, People's Republic of China
| | - Xin Yang
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, People's Republic of China
| | - Yong-Xiang Wu
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, People's Republic of China
| | - Xue-Fang Peng
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, People's Republic of China
| | - Xiao-Ai Zhang
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, People's Republic of China
| | | | - Ning Cui
- The 154 Hospital, Xinyang, People's Republic of China
| | - Hao Li
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, People's Republic of China; School of Public Health, Wuhan University, Wuhan, People's Republic of China.
| | - Wei Liu
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, People's Republic of China; School of Public Health, Wuhan University, Wuhan, People's Republic of China.
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Sun J, Yang ZD, Xie X, Li L, Zeng HS, Gong B, Xu JQ, Wu JH, Qu BB, Song GW. Clinical application of SARS-CoV-2 antibody detection and monoclonal antibody therapies against COVID-19. World J Clin Cases 2023; 11:2168-2180. [PMID: 37122515 PMCID: PMC10131020 DOI: 10.12998/wjcc.v11.i10.2168] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 01/17/2023] [Accepted: 03/10/2023] [Indexed: 03/30/2023] Open
Abstract
The purpose of this study was to investigate the clinical application of severe acute respiratory distress syndrome coronavirus-2 (SARS-CoV-2) specific antibody detection and anti-SARS-CoV-2 specific monoclonal antibodies (mAbs) in the treatment of coronavirus infectious disease 2019 (COVID-19). The dynamic changes of SARS-CoV-2 specific antibodies during COVID-19 were studied. Immunoglobulin M (IgM) appeared earlier and lasted for a short time, while immunoglobulin G (IgG) appeared later and lasted longer. IgM tests can be used for early diagnosis of COVID-19, and IgG tests can be used for late diagnosis of COVID-19 and identification of asymptomatic infected persons. The combination of antibody testing and nucleic acid testing, which complement each other, can improve the diagnosis rate of COVID-19. Monoclonal anti-SARS-CoV-2 specific antibodies can be used to treat hospitalized severe and critically ill patients and non-hospitalized mild to moderate COVID-19 patients. COVID-19 convalescent plasma, highly concentrated immunoglobulin, and anti-SARS-CoV-2 specific mAbs are examples of anti-SARS-CoV-2 antibody products. Due to the continuous emergence of mutated strains of the novel coronavirus, especially omicron, its immune escape ability and infectivity are enhanced, making the effects of authorized products reduced or invalid. Therefore, the optimal application of anti-SARS-CoV-2 antibody products (especially anti-SARS-CoV-2 specific mAbs) is more effective in the treatment of COVID-19 and more conducive to patient recovery.
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Affiliation(s)
- Jin Sun
- Medical Innovation Research Office, Sinopharm Gezhouba Central Hospital, Third Clinical Medical College of Three Gorges University, Yichang 443002, Hubei Province, China
| | - Zhen-Dong Yang
- Department of Respiratory, Beijing Jindu Children Hospital, Beijing 102208, China
- Innovative Medicine Working Committee of the Chinese Society of Water Resources and Electric Power Medical Science and Technology, Beijing 100053, China
- Department of Pediatrics, Sinopharm Gezhouba Central Hospital, Third Clinical Medical College of Three Gorges University, Yichang 443002, Hubei Province, China
| | - Xiong Xie
- Department of Pediatrics, Sinopharm Gezhouba Central Hospital, Third Clinical Medical College of Three Gorges University, Yichang 443002, Hubei Province, China
| | - Li Li
- Department of Intensive Care, First Clinical Medical College of Three Gorges University, Yichang 443000, Hubei Province, China
| | - Hua-Song Zeng
- Department of Allergy Immunology and Rheumatology, Guangzhou Children's Hospital, Women's and Children's Medical Center Affiliated with Guangzhou Medical University, Guangzhou 510000, Guangdong Province, China
| | - Bo Gong
- Central Laboratory, Shanghai Changning District Maternal and Child Health, Maternal and Child Health Hospital Affiliated with Shanghai East China Normal University, Shanghai 210000, China
| | - Jian-Qiang Xu
- Department of Respiratory and Critical Care Medicine, Sinopharm Gezhouba Central Hospital, Third Clinical Medical College of Three Gorges University, Yichang 443002, Hubei Province, China
| | - Ji-Hong Wu
- School of Clinical Medicine, Beijing Tsinghua Chang Gung Hospital Affiliated to Tsinghua University, Beijing 102218, China
| | - Bei-Bei Qu
- Medical Innovation Research Office, Sinopharm Gezhouba Central Hospital, Third Clinical Medical College of Three Gorges University, Yichang 443002, Hubei Province, China
| | - Guo-Wei Song
- Department of Emergency, Children's Hospital Affiliated with Beijing Capital Institute of Pediatrics, Beijing 100020, China
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Yang ZD, Hua YF, Guo L. Confirmation of the third lumbar transverse process syndrome by clinical treatment and magnetic resonance imaging: a case description. Quant Imaging Med Surg 2023; 13:1260-1263. [PMID: 36819236 PMCID: PMC9929382 DOI: 10.21037/qims-22-520] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 12/07/2022] [Indexed: 01/09/2023]
Affiliation(s)
- Zhen-Dong Yang
- Department of Orthopedics, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yi-Fan Hua
- Department of Radiology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Li Guo
- Department of Radiology, The Second Affiliated Hospital of Kunming Medical University, Kunming, China
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6
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Dai ZN, Peng XF, Li JC, Zhao J, Wu YX, Yang X, Yang T, Zhang SF, Dai K, Guan XG, Yuan C, Yang ZD, Cui N, Lu QB, Huang Y, Fan H, Zhang XA, Xiao GF, Peng K, Zhang LK, Liu W, Li H. Effect of genomic variations in severe fever with thrombocytopenia syndrome virus on the disease lethality. Emerg Microbes Infect 2022; 11:1672-1682. [PMID: 35603493 PMCID: PMC9225783 DOI: 10.1080/22221751.2022.2081617] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Severe fever with thrombocytopenia syndrome virus (SFTSV), an emerging tick-borne bunyavirus, causes mild-to-moderate infection to critical illness or even death in human patients. The effect of virus variations on virulence and related clinical significance is unclear. We prospectively recruited SFTSV-infected patients in a hotspot region of SFTS endemic in China from 2011 to 2020, sequenced whole genome of SFTSV, and assessed the association of virus genomic variants with clinical data, viremia, and inflammatory response. We identified seven viral clades (I-VII) based on phylogenetic characterization of 805 SFTSV genome sequences. A significantly increased case fatality rate (32.9%) was revealed in one unique clade (IV) that possesses a specific co-mutation pattern, compared to other three common clades (I, 16.7%; II, 13.8%; and III, 11.8%). The phenotype-genotype association (hazard ratios ranged 1.327-2.916) was confirmed by multivariate regression adjusting age, sex, and hospitalization delay. We revealed a pronounced inflammation response featured by more production of CXCL9, IL-10, IL-6, IP-10, M-CSF, and IL-1β, in clade IV, which was also related to severe complications. We observed enhanced cytokine expression from clade IV inoculated PBMCs and infected mice. Moreover, the neutralization activity of convalescent serum from patients infected with one specified clade was remarkably reduced to other viral clades. Together, our findings revealed a significant association between one specific viral clade and SFTS fatality, highlighting the need for molecular surveillance for highly lethal strains in endemic regions and unravelled the importance of evaluating cross-clade effect in development of vaccines and therapeutics.
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Affiliation(s)
- Zi-Niu Dai
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China.,College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, People's Republic of China
| | - Xue-Fang Peng
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Jia-Chen Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Jing Zhao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Yong-Xiang Wu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Xin Yang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Tong Yang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Shao-Fei Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Ke Dai
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Xiu-Gang Guan
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Chun Yuan
- The People's Liberation Army 990 Hospital, Xinyang, People's Republic of China
| | - Zhen-Dong Yang
- The People's Liberation Army 990 Hospital, Xinyang, People's Republic of China
| | - Ning Cui
- The People's Liberation Army 990 Hospital, Xinyang, People's Republic of China
| | - Qing-Bin Lu
- School of Public Health, Peking University, Beijing, People's Republic of China
| | - Yong Huang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Hang Fan
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Xiao-Ai Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Geng-Fu Xiao
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Ke Peng
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Lei-Ke Zhang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, People's Republic of China
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China.,College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, People's Republic of China
| | - Hao Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
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7
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Ge HH, Wang G, Guo PJ, Zhao J, Zhang S, Xu YL, Liu YN, Ye XL, Wu YX, Li S, Yue M, Ji WJ, Geng SY, Li H, Zhang XA, Yang ZD, Cui N, Li W, Lin L, Liu W. Coinfections in hospitalized patients with severe fever with thrombocytopenia syndrome: A retrospective study. J Med Virol 2022; 94:5933-5942. [PMID: 36030552 DOI: 10.1002/jmv.28093] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/11/2022] [Accepted: 08/22/2022] [Indexed: 01/06/2023]
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging tick-borne disease with a high case fatality rate. Few studies have been performed on bacterial or fungal coinfections or the effect of antibiotic therapy. A retrospective, observational study was performed to assess the prevalence of bacterial and fungal coinfections in patients hospitalized for SFTSV infection. The most commonly involved microorganisms and the effect of antimicrobial therapy were determined by the site and source of infection. A total of 1201 patients hospitalized with SFTSV infection were included; 359 (29.9%) had microbiologically confirmed infections, comprised of 292 with community-acquired infections (CAIs) and 67 with healthcare-associated infections (HAIs). Death was independently associated with HAIs, with a more significant effect than that observed for CAIs. For bacterial infections, only those acquired in hospitals were associated with fatal outcomes, while fungal infection, whether acquired in hospital or community, was related to an increased risk of fatal outcomes. The infections in the respiratory tract and bloodstream were associated with a higher risk of death than that in the urinary tract. Both antibiotic and antifungal treatments were associated with improved survival for CAIs, while for HAIs, only antibiotic therapy was related to improved survival, and no effect from antifungal therapy was observed. Early administration of glucocorticoids was associated with an increased risk of HAIs. The study provided novel clinical and epidemiological data and revealed risk factors, such as bacterial coinfections, fungal coinfections, infection sources, and treatment strategies associated with SFTS deaths/survival. This report might be helpful in curing SFTS and reducing fatal SFTS.
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Affiliation(s)
- Hong-Han Ge
- State Key Laboratory Of Pathogen And Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Gang Wang
- State Key Laboratory Of Pathogen And Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Pei-Jun Guo
- Yantai Center for Disease Control and Prevention, Yantai, Shandong Province, People's Republic of China
| | - Jing Zhao
- State Key Laboratory Of Pathogen And Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China.,General Demonstration Research Room of Aeromedicine, Air Force Medical Center, Beijing, People's Republic of China
| | - Shuai Zhang
- Department of Clinical Laboratory, Yantai Qishan Hospital, Yantai, Shandong Province, People's Republic of China
| | - Yan-Li Xu
- Department of Infectious Diseases, Yantai Qishan Hospital, Yantai, Shandong Province, People's Republic of China
| | - Yuan-Ni Liu
- Department of Infectious Diseases, Yantai Qishan Hospital, Yantai, Shandong Province, People's Republic of China
| | - Xiao-Lei Ye
- The Center for Disease Prevention and Control in Western Theater Command of PLA Joint Logistic Support Force, Lanzhou, Gansu Province, People's Republic of China
| | - Yong-Xiang Wu
- State Key Laboratory Of Pathogen And Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Shuang Li
- State Key Laboratory Of Pathogen And Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Ming Yue
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, People's Republic of China
| | - Wen-Juan Ji
- Department of Infectious Diseases, Yantai Qishan Hospital, Yantai, Shandong Province, People's Republic of China
| | - Shu-Ying Geng
- Department of Infectious Diseases, Yantai Qishan Hospital, Yantai, Shandong Province, People's Republic of China
| | - Hao Li
- State Key Laboratory Of Pathogen And Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Xiao-Ai Zhang
- State Key Laboratory Of Pathogen And Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Zhen-Dong Yang
- The 990th Hospital of Joint Logistic Support Force of Chinese People's Liberation Army, Xinyang, Henan Province, People's Republic of China
| | - Ning Cui
- The 990th Hospital of Joint Logistic Support Force of Chinese People's Liberation Army, Xinyang, Henan Province, People's Republic of China
| | - Wei Li
- The 990th Hospital of Joint Logistic Support Force of Chinese People's Liberation Army, Xinyang, Henan Province, People's Republic of China
| | - Ling Lin
- Department of Infectious Diseases, Yantai Qishan Hospital, Yantai, Shandong Province, People's Republic of China
| | - Wei Liu
- State Key Laboratory Of Pathogen And Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China.,Beijing Key Laboratory of Vector Borne and Natural Focus Infectious Diseases, Beijing, People's Republic of China
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Ye XL, Dai K, Lu QB, Huang YQ, Lv SM, Zhang PH, Li JC, Zhang HY, Yang ZD, Cui N, Yuan C, Liu K, Zhang XA, Zhang JS, Li H, Yang Y, Fang LQ, Liu W. Infection with severe fever with thrombocytopenia virus in healthy population: a cohort study in a high endemic region, China. Infect Dis Poverty 2021; 10:133. [PMID: 34794512 PMCID: PMC8600349 DOI: 10.1186/s40249-021-00918-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 11/05/2021] [Indexed: 11/10/2022] Open
Abstract
Background Severe fever with thrombocytopenia (SFTS) caused by SFTS virus (SFTSV) was a tick-borne hemorrhagic fever that posed significant threat to human health in Eastern Asia. The study was designed to measure the seroprevalence of SFTSV antibody in healthy population residing in a high endemic region. Methods A cohort study was performed on healthy residents in Shangcheng County in Xinyang City from April to December in 2018, where the highest SFTS incidence in China was reported. Anti-SFTSV IgG was measured by indirect enzyme-linked immunosorbent assay and neutralizing antibody (NAb) was detected by using PRNT50. The logistic regression models were performed to analyze the variables that were associated with seropositive rates. Results Totally 886 individuals were recruited. The baseline seroprevalence that was tested before the epidemic season was 11.9% (70/587) for IgG and 6.8% (40/587) for NAb, which was increased to 13.4% (47/350) and 7.7% (27/350) during the epidemic season, and further to 15.8% (80/508) and 9.8% (50/508) post epidemic. The IgG antibody-based seropositivity was significantly related to the patients aged ≥ 70 years old [adjusted odds ratio (OR) = 2.440, 95% confidence interval (CI): 1.334–4.461 compared to the group of < 50 years old, P = 0.004], recent contact with cats (adjusted OR = 2.195, 95% CI: 1.261–3.818, P = 0.005), and working in tea garden (adjusted OR = 1.698, 95% CI: 1.002–2.880, P = 0.049) by applying multivariate logistic regression model. The NAb based seropositivity was similarly related to the patients aged ≥ 70 years old (adjusted OR = 2.691, 95% CI: 1.271–5.695 compared to the group of < 50 years old, P = 0.010), and recent contact with cats (OR = 2.648, 95% CI: 1.419–4.941, P = 0.002). For a cohort of individuals continually sampled with 1-year apart, the anti-SFTSV IgG were maintained at a stable level, while the NAb level reduced. Conclusions Subclinical infection might not provide adequate immunity to protect reinfection of SFTSV, thus highlighting the ongoing threats of SFTS in endemic regions, which called for an imperative need for vaccine development. Identification of risk factors might help to target high-risk population for public health education and vaccination in the future. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s40249-021-00918-0.
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Affiliation(s)
- Xiao-Lei Ye
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China
| | - Ke Dai
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China
| | - Qing-Bin Lu
- Department of Laboratorial Science and Technology, School of Public Health, Peking University, Beijing, 100191, People's Republic of China
| | - Yan-Qin Huang
- Shangcheng Center for Diseases Control and Prevention, Xinyang, 464000, People's Republic of China
| | - Shou-Ming Lv
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China
| | - Pan-He Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China
| | - Jia-Chen Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China
| | - Hai-Yang Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China
| | - Zhen-Dong Yang
- The 990 Hospital of Chinese People's Liberation Army Joint Logistic Support Force, Xinyang, 464000, People's Republic of China
| | - Ning Cui
- The 990 Hospital of Chinese People's Liberation Army Joint Logistic Support Force, Xinyang, 464000, People's Republic of China
| | - Chun Yuan
- The 990 Hospital of Chinese People's Liberation Army Joint Logistic Support Force, Xinyang, 464000, People's Republic of China
| | - Kun Liu
- Department of Epidemiology, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, School of Public Health, Air Force Medical University, Xi'an, 710032, People's Republic of China
| | - Xiao-Ai Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China
| | - Jiu-Song Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China
| | - Hao Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China
| | - Yang Yang
- Department of Biostatistics, College of Public Health and Health Professions, and Emerging Pathogens Institute, University of Florida, Gainesville, FL, 32611, USA.
| | - Li-Qun Fang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China.
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China. .,Department of Laboratorial Science and Technology, School of Public Health, Peking University, Beijing, 100191, People's Republic of China.
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Zhao J, Lu QB, Li H, Yuan Y, Cui N, Yuan C, Zhang XA, Yang ZD, Ruan SM, Liu LZ, Du J, Fang LQ, Liu W. Sex Differences in Case Fatality Rate of Patients With Severe Fever With Thrombocytopenia Syndrome. Front Microbiol 2021; 12:738808. [PMID: 34721338 PMCID: PMC8552034 DOI: 10.3389/fmicb.2021.738808] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 09/09/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Severe fever with thrombocytopenia syndrome (SFTS) is a tick-borne disease with high mortality. However, detailed analysis is lacking to explore the complex effect of sex with age or comorbidities. Methods: A retrospective cohort study was performed among 2,938 SFTS patients entered during 2011-2020 in Xinyang, China. The case fatality rate (CFR) was estimated for their association with sex, age, and comorbidities by an interactive way. The difference of immune response between sex was explored in an age dependent way. Results: An overall CFR of 15.3% (450/2,938) was obtained, which appeared to be higher in males than in females [17.7% vs. 13.6%, adjusted odds ratio (aOR) = 1.24; 95% CI, 1.00-1.53; P = 0.048] and increased dramatically with age (P < 0.001). The associations between sex and SFTS fatal outcome were age-dependent and varied according to the status of comorbidities. The mortality-related risk conferred by older age was more pronounced in males, with aOR (95% CI) to be 5.76 (3.75-8.84) vs. 5.30 (3.54-7.95) in female. Sex-stratified analysis disclosed significant associations between death and comorbidities among female patients (aOR = 1.87, 95% CI: 1.40-2.49; P < 0.001), while none among males. Among females, the significant associations between presence of comorbidity and fatal outcome differed among age groups, with aOR (95% CI) decreased from 2.28 (1.16-4.46) in ≤60 years, to 2.06 (1.34-3.18) in 60-70 years and further to 1.55 (0.97-2.47) in >70 years. Altogether 194 SFTS patients were randomly selected for the test of B cells, natural killer (NK) cells, CD4 cells percentages, and anti-SFTSV IgM antibody level, the results revealed that males >60 years had significantly decreased percentages of B cells, CD4 cells, lower anti-SFTSV IgM antibody titer, and increased level of NK cells than male aged ≤60 years, while none of these age specific differences was observed in the females. This finding underlies the more pronounced age specific difference in CFR among male than female. Conclusions: Males had a significantly higher mortality of SFTS than did females, and more likely to be affected by aging for SFTS mortality. This difference can be explained by the effect from comorbidities and the host immunity. It is essential to take a sex- and age-based approach to SFTS treatment and management.
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Affiliation(s)
- Jing Zhao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Qing-Bin Lu
- Department of Laboratorial Science and Technology, School of Public Health, Peking University, Beijing, China
| | - Hao Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Yang Yuan
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Ning Cui
- The 990th Hospital of Joint Logistic Support Force of Chinese People's Liberation Army, Xinyang, China
| | - Chun Yuan
- The 990th Hospital of Joint Logistic Support Force of Chinese People's Liberation Army, Xinyang, China
| | - Xiao-Ai Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Zhen-Dong Yang
- The 990th Hospital of Joint Logistic Support Force of Chinese People's Liberation Army, Xinyang, China
| | - Shi-Man Ruan
- Jinan Center for Disease Control and Prevention, Jinan, China
| | - Lan-Zheng Liu
- Jinan Center for Disease Control and Prevention, Jinan, China
| | - Juan Du
- Department of Laboratorial Science and Technology, School of Public Health, Peking University, Beijing, China
| | - Li-Qun Fang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China.,Department of Laboratorial Science and Technology, School of Public Health, Peking University, Beijing, China.,Beijing Key Laboratory of Vector Borne and Natural Focus Infectious Diseases, Beijing, China
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10
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Lv SM, Yuan C, Zhang L, Wang YN, Dai ZN, Yang T, Dai K, Zhang XA, Lu QB, Yang ZD, Cui N, Li H, Liu W. Severe fever with thrombocytopenia syndrome with re-infection in China: a case report. Infect Dis Poverty 2021; 10:90. [PMID: 34183070 PMCID: PMC8238631 DOI: 10.1186/s40249-021-00877-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 06/22/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Severe fever with thrombocytopenia syndrome (SFTS), an emerging tickborne infectious disease caused by a novel banyangvirus (SFTS virus, SFTSV), was endemic in several Asian countries with a high mortality up to 30%. Until recently, SFTSV-associated re-infection have not been reported and investigated. CASE PRESENTATION A 42-year-old female patient was identified as a case of SFTS with re-infection, with two episodes of SFTSV infection on June 2018 and May 2020. The diagnosis of SFTS was confirmed by detection of SFTSV RNA in the blood samples using real-time reverse-transcription polymerase chain reaction and antibodies specific for SFTSV using enzyme linked immunosorbent assay. The changes of viremia and antibody response differed between the two episodes. Phylogenetic analysis showed the two viral genome sequences were in the same clade, but showing 0.6% dissimilarity of the nearly whole nucleotide sequence. Analysis of clinical data revealed that the second episode showed milder illness than that of the first episode. CONCLUSIONS Epidemiological and clinical findings, viral whole genomic sequences, and serological evidence, provided evidence for the re-infection of SFTSV rather than prolonged viral shedding or relapse of the original infection. The patients with re-infection of SFTSV may be at high odds of clinically inapparent or mildly symptomatic. More attention should be directed towards the long-term follow up of the recovered patients in the future, to explicitly acquire the decay profile of their immunity response.
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Affiliation(s)
- Shou-Ming Lv
- Graduate School of Anhui Medical University, Hefei, 230032, People's Republic of China.,Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China
| | - Chun Yuan
- The 990 Hospital, People's Liberation Army, Xinyang, 464000, People's Republic of China
| | - Lan Zhang
- The 990 Hospital, People's Liberation Army, Xinyang, 464000, People's Republic of China
| | - Yu-Na Wang
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China
| | - Zi-Niu Dai
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China.,College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China
| | - Tong Yang
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China
| | - Ke Dai
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China
| | - Xiao-Ai Zhang
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China
| | - Qing-Bin Lu
- School of Public Health, Peking University, Beijing, 100191, People's Republic of China
| | - Zhen-Dong Yang
- The 990 Hospital, People's Liberation Army, Xinyang, 464000, People's Republic of China
| | - Ning Cui
- The 990 Hospital, People's Liberation Army, Xinyang, 464000, People's Republic of China
| | - Hao Li
- Graduate School of Anhui Medical University, Hefei, 230032, People's Republic of China. .,Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China.
| | - Wei Liu
- Graduate School of Anhui Medical University, Hefei, 230032, People's Republic of China. .,Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, 20 Dong-Da Street, Fengtai District, Beijing, 100071, People's Republic of China. .,College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, People's Republic of China. .,School of Public Health, Peking University, Beijing, 100191, People's Republic of China.
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11
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Li H, Li XM, Du J, Zhang XA, Cui N, Yang ZD, Xue XJ, Zhang PH, Cao WC, Liu W. Candidatus Rickettsia xinyangensis as Cause of Spotted Fever Group Rickettsiosis, Xinyang, China, 2015. Emerg Infect Dis 2021; 26:985-988. [PMID: 32310072 PMCID: PMC7181907 DOI: 10.3201/eid2605.170294] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
In 2015, we evaluated 221 patients with undifferentiated fever and tick bite or animal exposure in Xinyang, China, for Rickettsia infection. Three with mild disease were infected with Candidatus R. xinyangensis, which clustered with R. fournieri and R. vini in phylogenetic analyses. Field investigations suggest Haemaphysalis longicornis ticks might be involved in transmission.
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12
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Li H, Jiang XM, Cui N, Yuan C, Zhang SF, Lu QB, Yang ZD, Xin QL, Song YB, Zhang XA, Liu HZ, Du J, Fan XJ, Yuan L, Yuan YM, Wang Z, Wang J, Zhang L, Zhang DN, Wang ZB, Dai K, Bai JY, Hao ZN, Fan H, Fang LQ, Xiao G, Yang Y, Peng K, Wang HQ, Li JX, Zhang LK, Liu W. Clinical effect and antiviral mechanism of T-705 in treating severe fever with thrombocytopenia syndrome. Signal Transduct Target Ther 2021; 6:145. [PMID: 33859168 PMCID: PMC8050330 DOI: 10.1038/s41392-021-00541-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [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: 09/07/2020] [Revised: 01/24/2021] [Accepted: 02/27/2021] [Indexed: 11/08/2022] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) virus (SFTSV) is an emerging tick-borne virus with high fatality and an expanding endemic. Currently, effective anti-SFTSV intervention remains unavailable. Favipiravir (T-705) was recently reported to show in vitro and in animal model antiviral efficacy against SFTSV. Here, we conducted a single-blind, randomized controlled trial to assess the efficacy and safety of T-705 in treating SFTS (Chinese Clinical Trial Registry website, number ChiCTR1900023350). From May to August 2018, laboratory-confirmed SFTS patients were recruited from a designated hospital and randomly assigned to receive oral T-705 in combination with supportive care or supportive care only. Fatal outcome occurred in 9.5% (7/74) of T-705 treated patients and 18.3% (13/71) of controls (odds ratio, 0.466, 95% CI, 0.174-1.247). Cox regression showed a significant reduction in case fatality rate (CFR) with an adjusted hazard ratio of 0.366 (95% CI, 0.142-0.944). Among the low-viral load subgroup (RT-PCR cycle threshold ≥26), T-705 treatment significantly reduced CFR from 11.5 to 1.6% (P = 0.029), while no between-arm difference was observed in the high-viral load subgroup (RT-PCR cycle threshold <26). The T-705-treated group showed shorter viral clearance, lower incidence of hemorrhagic signs, and faster recovery of laboratory abnormities compared with the controls. The in vitro and animal experiments demonstrated that the antiviral efficacies of T-705 were proportionally induced by SFTSV mutation rates, particularly from two transition mutation types. The mutation analyses on T-705-treated serum samples disclosed a partially consistent mutagenesis pattern as those of the in vitro or animal experiments in reducing the SFTSV viral loads, further supporting the anti-SFTSV effect of T-705, especially for the low-viral loads.
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Affiliation(s)
- Hao Li
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, P. R. China
| | - Xia-Ming Jiang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, Hubei, P. R. China
| | - Ning Cui
- The 154 Hospital, People's Liberation Army, Xinyang, Henan, P. R. China
| | - Chun Yuan
- The 154 Hospital, People's Liberation Army, Xinyang, Henan, P. R. China
| | - Shao-Fei Zhang
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, P. R. China
| | - Qing-Bin Lu
- School of Public Health, Peking University, Beijing, P. R. China
| | - Zhen-Dong Yang
- The 154 Hospital, People's Liberation Army, Xinyang, Henan, P. R. China
| | - Qin-Lin Xin
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, Hubei, P. R. China
| | - Ya-Bin Song
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, P. R. China
| | - Xiao-Ai Zhang
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, P. R. China
| | - Hai-Zhou Liu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, Hubei, P. R. China
| | - Juan Du
- School of Public Health, Peking University, Beijing, P. R. China
| | - Xue-Juan Fan
- The 154 Hospital, People's Liberation Army, Xinyang, Henan, P. R. China
| | - Lan Yuan
- The 154 Hospital, People's Liberation Army, Xinyang, Henan, P. R. China
| | - Yi-Mei Yuan
- The 154 Hospital, People's Liberation Army, Xinyang, Henan, P. R. China
| | - Zhen Wang
- The 154 Hospital, People's Liberation Army, Xinyang, Henan, P. R. China
| | - Juan Wang
- The 154 Hospital, People's Liberation Army, Xinyang, Henan, P. R. China
| | - Lan Zhang
- The 154 Hospital, People's Liberation Army, Xinyang, Henan, P. R. China
| | - Dong-Na Zhang
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, P. R. China
| | - Zhi-Bo Wang
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, P. R. China
| | - Ke Dai
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, P. R. China
| | - Jie-Ying Bai
- Institute of Molecular Medicine, Peking University, Beijing, P. R. China
| | - Zhao-Nian Hao
- Tongji Medical College, Huazhong University of Science and Technology, Wuhan, P. R. China
| | - Hang Fan
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, P. R. China
| | - Li-Qun Fang
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, P. R. China
| | - Gengfu Xiao
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, Hubei, P. R. China
| | - Yang Yang
- Department of Biostatistics and Emerging Pathogens Institute, University of Florida, Gainesville, FL, USA
| | - Ke Peng
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, Hubei, P. R. China
| | - Hong-Quan Wang
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, P. R. China
| | - Jian-Xiong Li
- Department of Cancer, People's Liberation Army General Hospital, Beijing, P. R. China.
| | - Lei-Ke Zhang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, Hubei, P. R. China.
| | - Wei Liu
- Beijing Institute of Microbiology and Epidemiology, State Key Laboratory of Pathogen and Biosecurity, Beijing, P. R. China.
- Beijing Key Laboratory of Vector Borne and Natural Focus Infectious Diseases, Beijing, P. R. China.
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Cao JX, Liu L, Sun YT, Zeng QH, Yang ZD, Chen JC. Escitalopram improves neural functional prognosis and endothelial dysfunction in patients with acute cerebral infarction. Restor Neurol Neurosci 2020; 38:385-393. [PMID: 33185618 DOI: 10.3233/rnn-201041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Escitalopram is one of the most commonly used SSRIs at present, which has the characteristics of quick onset, less interactions with other drugs, and relative safety. OBJECTIVE This study aims to investigate the effects of escitalopram on neural functional prognoses and endothelial dysfunction after acute ischemic stroke. METHODS One hundred eligible patients afflicted with acute ischemic stroke were randomized into two groups: control and treatment groups. Patients in the treatment group received escitalopram in addition to the basic therapies in the control group over a period of 90 days. Neurological deficits were quantified using the National Institutes of Health Stroke Scale (NIHSS) score and Barthel index (BI) score, cognitive impairment was determined using the Mini-Mental State Examination (MMSE) score, depressive symptoms were measured using the 17-item Hamilton Depression Rating Scale (HAMD). Furthermore, post-stroke depression (PSD) was defined based on the Diagnostic and Statistical Manual of Mental Disorders (Fourth Edition), with a HAMD score ≥17. Flow-mediated vascular dilatation (FMD) of the brachial artery was use as a surrogate indicator for endothelial dysfunction assessment with ultrasound. RESULTS The mean NIHSS and HAMD scores on day 90 after treatment were significantly lower in the treatment group than in the control group (2.17±0.36 vs. 4.24±0.85; 5.81±1.35 vs. 10.43±4.91; P < 0.01), while the mean BI score and FMD were significantly higher in the treatment group (93.08±6.23 vs. 79.64±7.56, P < 0.01; 8.71±2.35 vs. 5.83±1.21, P < 0.05) than in the control group. The improvement in MMSE score was not significantly different between the two groups. CONCLUSIONS Treatment with escitalopram early after ischemic stroke can improve neural functional prognoses and endothelial dysfunction. Escitalopram had less side effects, which is worthy of clinical prophylactic application.
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Affiliation(s)
- Jin-Xia Cao
- Department of Neuropsychiatry, The Lianyungang Second People's Hospital, Jiangsu, China
| | - Li Liu
- Department of Neuropsychiatry, The Lianyungang Second People's Hospital, Jiangsu, China
| | - Yun-Tao Sun
- Department of Neuropsychiatry, The Lianyungang Second People's Hospital, Jiangsu, China
| | - Qing-Hong Zeng
- Department of Neurology, The Lianyungang Second People's Hospital, Jiangsu, China
| | - Zhen-Dong Yang
- Department of Ultrasonography, The Lianyungang Second People's Hospital, Jiangsu, China
| | - Jie-Chun Chen
- Department of Neurology, The Lianyungang Second People's Hospital, Jiangsu, China
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14
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Li XK, Dai K, Yang ZD, Yuan C, Cui N, Zhang SF, Hu YY, Wang ZB, Miao D, Zhang PH, Li H, Zhang XA, Huang YQ, Chen WW, Zhang JS, Lu QB, Liu W. Correlation between thrombocytopenia and host response in severe fever with thrombocytopenia syndrome. PLoS Negl Trop Dis 2020; 14:e0008801. [PMID: 33119592 PMCID: PMC7595704 DOI: 10.1371/journal.pntd.0008801] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 08/14/2020] [Indexed: 12/13/2022] Open
Abstract
Severe Fever with Thrombocytopenia Syndrome (SFTS) is an emerging infectious disease caused by a novel bunyavirus, SFTS virus (SFTSV), with fatal outcome developed in approximately 17% of the cases. Thrombocytopenia is a hallmark feature of SFTS, and associated with a higher risk of fatal outcome, however, the pathophysiological involvement of platelet in the clinical outcome of SFTS remained under-investigated. In the current study, by retrospectively analyzing 1538 confirmed SFTS patients, we observed that thrombocytopenia was associated with enhanced activation of the cytokine network and the vascular endothelium, also with a disturbed coagulation response. The platelet phenotypes were also extensively altered in the process of thrombocytopenia development of SFTS patients. More importantly, all these disturbed host responses were related to the severity of thrombocytopenia, thus were considered to play in a synergistic way to influence the disease outcome. Moreover, the clinical effect of platelet transfusion was assessed by comparing two groups of patients with or without receiving this therapy. As a result, we observed no therapy effect in altering frequencies of fatal outcome, clinical bleeding development, or dynamic change of platelet count during the hospitalization. It’s suggested that platelet supplementation alone acted a minor role in improving disease outcome, therefore new therapeutic intervention to regulate host response should be proposed. The current results revealed some evidence of interrelationship between platelet count and clinical outcome of SFTS disease from the perspective of activation of the cytokine network, the vascular endothelium, and the coagulation/fibrinolysis system. These evaluations might help to attain a better understanding of the pathogenesis and therapy choice in SFTS. Thrombocytopenia in SFTSV is a multifactor-process involving a combination of platelet size or morphology alterations, fibrinolysis activation and coagulation abnormalities, increased inflammatory response and endothelial injury. Platelet supplementation alone shows minor role in improving disease, therefore new therapeutic intervention to regulate host response should be proposed.
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Affiliation(s)
- Xiao-Kun Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
| | - Ke Dai
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
| | - Zhen-Dong Yang
- The 990 Hospital of Chinese People's Liberation Army Joint Logistic Support Force, Shihe District, Xinyang, P. R. China
| | - Chun Yuan
- The 990 Hospital of Chinese People's Liberation Army Joint Logistic Support Force, Shihe District, Xinyang, P. R. China
| | - Ning Cui
- The 990 Hospital of Chinese People's Liberation Army Joint Logistic Support Force, Shihe District, Xinyang, P. R. China
| | - Shao-Fei Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
| | - Yuan-Yuan Hu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
| | - Zhi-Bo Wang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
| | - Dong Miao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
| | - Pan-He Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
| | - Hao Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
| | - Xiao-Ai Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
| | - Yan-Qin Huang
- The Shangcheng Center for Disease Control and Prevention, Shangcheng County, Xinyang, P. R. China
| | - Wei-Wei Chen
- Treatment and Research Center for Infectious Diseases, the Fifth Medical Center of Chinese PLA General Hospital, Fengtai District, Beijing, P. R. China
| | - Jiu-Song Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
| | - Qing-Bin Lu
- Department of Laboratorial Science and Technology, School of Public Health, Peking University, Haidian District, Beijing, P. R. China
- * E-mail: (Q-BL); , (WL)
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
- Key Laboratory of Vector Borne and Natural Focus Infectious Diseases, Beijing, People’s Republic of China
- * E-mail: (Q-BL); , (WL)
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15
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Lu QB, Li H, Jiang FC, Mao LL, Liu XS, Wang N, Zhou YY, Dai K, Yang ZD, Dong LY, Cui N, Zhang XA, Zhang SF, Zhang PH, Fang LQ, Liu W. The Differential Characteristics Between Severe Fever With Thrombocytopenia Syndrome and Hemorrhagic Fever With Renal Syndrome in the Endemic Regions. Open Forum Infect Dis 2020; 6:ofz477. [PMID: 32128325 PMCID: PMC7047964 DOI: 10.1093/ofid/ofz477] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Accepted: 11/01/2019] [Indexed: 11/21/2022] Open
Abstract
An effective differentiation between severe fever with thrombocytopenia syndrome and hemorrhagic fever with renal syndrome was attained by a model considering patients’ age, mouse/tick contact, presence of blush, low back pain, diarrhea, enlarged lymph nodes, and white blood cell count.
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Affiliation(s)
- Qing-Bin Lu
- Department of Laboratorial Science and Technology, School of Public Health, Peking University, Beijing, People's Republic of China
| | - Hao Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Fa-Chun Jiang
- Division of Infectious Disease, Qingdao Center for Disease Control and Prevention, Qingdao, People's Republic of China
| | - Ling-Ling Mao
- Liaoning Center for Disease Control and Prevention, Shenyang, People's Republic of China
| | - Xue-Sheng Liu
- Liaoning Center for Disease Control and Prevention, Shenyang, People's Republic of China
| | - Ning Wang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China.,Department of Microbiology, Graduate School of Mudanjiang Normal University, Mudanjiang, People's Republic of China
| | - Yong-Yun Zhou
- China National Accreditation Service for Conformity Assessment, Beijing, People's Republic of China
| | - Ke Dai
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Zhen-Dong Yang
- The 990 Hospital of Chinese People's Liberation Army Joint Logistic Support Force, Xinyang, People's Republic of China
| | - Li-Yan Dong
- Division of Infectious Disease, Qingdao Center for Disease Control and Prevention, Qingdao, People's Republic of China
| | - Ning Cui
- The 990 Hospital of Chinese People's Liberation Army Joint Logistic Support Force, Xinyang, People's Republic of China
| | - Xiao-Ai Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Shao-Fei Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Pan-He Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Li-Qun Fang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, People's Republic of China
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16
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Zhang YM, Yang ZD, Yu YF. Effect of neuregulin-1 on the auditory cortex in adult C57BL/6J mice. Iran J Basic Med Sci 2020; 23:362-367. [PMID: 32440323 PMCID: PMC7229506 DOI: 10.22038/ijbms.2020.33656.8026] [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: 01/23/2023]
Abstract
OBJECTIVES We sought to explore whether neuregulin-1(NRG1) would have a protective effect on the auditory cortices of adult C57BL/6J mice. MATERIALS AND METHODS We used RTPCR and Western blot (WB) to detect the expression of NRG1 and ERBB4 (the receptor of NRG1) in the auditory cortices of C57BL/6J mice of different ages (6-8 weeks and 42-44 weeks). Three groups of 42-44 week-old C57BL/6J mice were intraperitoneally injected with mouse neurotrophic factor (m-NGF), NRG1, or saline for two months. We observed the ultrastructures of the auditory cortices of adult mice after treatment using transmission electron microscopy. Additionally, we observed expression of NRG1 in the auditory cortices by immunohistochemistry. RESULTS Expression of NRG1 and ERBB4 in the auditory cortices of C57BL/6J mice at the age of 42-44 weeks was lower compared with 6-8 week-old mice. The ultra-structures of the auditory cortices, including the neurons and myelin sheaths, as revealed by transmission electron microscopy were healthier in the m-NGF and NRG1 treatment groups than those in the saline group. We found that expression of NRG1 in the auditory cortices after treatment in the m-NGF and NRG1 groups, especially in the NRG1 group, was higher than that in the saline group. CONCLUSION We concluded that with increasing age, NRG1 in the auditory cortices of C57BL/6J mice gradually decreased, and that NRG1 had a protective effect on the auditory cortices in adult C57BL/J mice.
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Affiliation(s)
- Yun-Mei Zhang
- Department of Otolaryngology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Zhen-Dong Yang
- Department of Otolaryngology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Ya-Feng Yu
- Department of Otolaryngology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China,Corresponding author: Ya-Feng Yu. Department of Otolaryngology, The First Affiliated Hospital of Soochow University, Suzhou 215006, China. Tel: +86-0512-67780370;
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17
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Li H, Zhang PH, Du J, Yang ZD, Cui N, Xing B, Zhang XA, Liu W. Rickettsia japonica Infections in Humans, Xinyang, China, 2014-2017. Emerg Infect Dis 2020; 25:1719-1722. [PMID: 31441748 PMCID: PMC6711240 DOI: 10.3201/eid2509.171421] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
During 2014–2017, we screened for Rickettsia japonica infection in Xinyang, China, and identified 20 cases. The major clinical manifestations of monoinfection were fever, asthenia, myalgia, rash, and anorexia; laboratory findings included thrombocytopenia and elevated hepatic aminotransferase concentrations. Physicians in China should consider R. japonica infection in at-risk patients.
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18
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Li H, Zhang PH, Huang Y, Du J, Cui N, Yang ZD, Tang F, Fu FX, Li XM, Cui XM, Fan YD, Xing B, Li XK, Tong YG, Cao WC, Liu W. Isolation and Identification of Rickettsia raoultii in Human Cases: A Surveillance Study in 3 Medical Centers in China. Clin Infect Dis 2019; 66:1109-1115. [PMID: 29069294 DOI: 10.1093/cid/cix917] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 10/19/2017] [Indexed: 11/14/2022] Open
Abstract
Background Rickettsia raoultii is frequently detected in multiple tick species, whereas human infection remains scarcely studied. Methods A surveillance study was performed at 3 sentinel hospitals in China, to recruit participants with suspected tick exposure. Rickettsia raoultii infection was identified through polymerase chain reaction, followed by sequencing, and confirmed serologically. Isolation by cell culture was performed and the isolates were genome sequenced. Results Twenty-six subjects were determined to have R. raoultii infection, including 7 with asymptomatic infection, 15 with mild to moderate illness, and 4 with severe illness. Common nonspecific manifestations in the 19 patients with mild to moderate or severe illness included fever (100%), malaise (95%), myalgia (58%), lymphadenopathy (53%), and nausea (42%). Only 5% of them had rash, and 16% had eschar. Scalp eschar and neck lymphadenopathy after a tick bite syndrome was only seen in 2 patients. Of the 4 patients with severe complications, 3 developed pulmonary edema, and 1 developed clouding of consciousness and lethargy. Frequent abnormalities of laboratory testing included leukopenia, thrombocytopenia, lymphopenia, neutropenia, hypoproteinemia, and elevated levels of total bilirubin, hepatic aminotransferases, lactate dehydrogenase, and creatine kinase. All the 19 patients recovered without sequelae after receiving doxycycline treatment. Two R. raoultii strains were isolated, and a significantly less degraded genome was observed than other more virulent Rickettsia strains, indicating a low pathogenicity of the current strain. Conclusions Human infection with R. raoultii has a wide clinical spectrum that ranged from subclinical infection to severe complications. Physicians need to be aware of the high potential and clinical complexity of R. raoultii infection, to ensure appropriate testing and treatment in endemic regions.
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Affiliation(s)
- Hao Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology
| | - Pan-He Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology
| | - Yong Huang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology
| | - Juan Du
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology
| | - Ning Cui
- The 154 Hospital, People's Liberation Army, Xinyang
| | | | - Fang Tang
- Center for Disease Control and Prevention of the Chinese Peoples' Armed Police Forces, Beijing
| | - Fei-Xiang Fu
- Center for Disease Control and Prevention of the Chinese Peoples' Armed Police Forces, Beijing
| | - Xiao-Mei Li
- Taishan Medical University, Tai'an, People's Republic of China
| | - Xiao-Ming Cui
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology
| | - Ya-Di Fan
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology
| | - Bo Xing
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology
| | - Xiao-Kun Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology
| | - Yi-Gang Tong
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology
| | - Wu-Chun Cao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology
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19
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Li XK, Lu QB, Chen WW, Xu W, Liu R, Zhang SF, Du J, Li H, Yao K, Zhai D, Zhang PH, Xing B, Cui N, Yang ZD, Yuan C, Zhang XA, Xu Z, Cao WC, Hu Z, Liu W. Arginine deficiency is involved in thrombocytopenia and immunosuppression in severe fever with thrombocytopenia syndrome. Sci Transl Med 2019; 10:10/459/eaat4162. [PMID: 30232226 DOI: 10.1126/scitranslmed.aat4162] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 05/01/2018] [Accepted: 08/14/2018] [Indexed: 12/25/2022]
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) caused by a recently identified bunyavirus, SFTSV, is an emerging infectious disease with extensive geographical distribution and high mortality. Progressive viral replication and severe thrombocytopenia are key features of SFTSV infection and fatal outcome, whereas the underlying mechanisms are unknown. We revealed arginine deficiency in SFTS cases by performing metabolomics analysis on two independent patient cohorts, suggesting that arginine metabolism by nitric oxide synthase and arginase is a key pathway in SFTSV infection and consequential death. Arginine deficiency was associated with decreased intraplatelet nitric oxide (Plt-NO) concentration, platelet activation, and thrombocytopenia. An expansion of arginase-expressing granulocytic myeloid-derived suppressor cells was observed, which was related to T cell CD3-ζ chain down-regulation and virus clearance disturbance, implicating a role of arginase activity and arginine depletion in the impaired anti-SFTSV T cell function. Moreover, a comprehensive measurement of arginine bioavailability, global arginine bioavailability ratio, was shown to be a good prognostic marker for fatal prediction in early infection. A randomized controlled trial demonstrated that arginine administration was correlated with enhanced Plt-NO concentration, suppressed platelet activation, and elevated CD3-ζ chain expression and eventually associated with an accelerated virus clearance and thrombocytopenia recovery. Together, our findings revealed the arginine catabolism pathway-associated regulation of platelet homeostasis and T cell dysregulation after SFTSV infection, which not only provided a functional mechanism underlying SFTS pathogenesis but also offered an alternative therapy choice for SFTS.
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Affiliation(s)
- Xiao-Kun Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dongda Street, Fengtai District, Beijing 100071, P. R. China
| | - Qing-Bin Lu
- Department of Laboratorial Science and Technology, School of Public Health, Peking University, No. 38, Xueyuan Road, Haidian District, Beijing 100191, P. R. China
| | - Wei-Wei Chen
- The 302 Hospital, People's Liberation Army, No. 100, West 4th Ring Road, Fengtai District, Beijing 100039, P. R. China
| | - Wen Xu
- The 302 Hospital, People's Liberation Army, No. 100, West 4th Ring Road, Fengtai District, Beijing 100039, P. R. China
| | - Rong Liu
- School of Basic Medical Sciences, Wuhan University School of Medicine, 185 Donghu Street, Wuhan 430071, P. R. China
| | - Shao-Fei Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dongda Street, Fengtai District, Beijing 100071, P. R. China
| | - Juan Du
- Department of Laboratorial Science and Technology, School of Public Health, Peking University, No. 38, Xueyuan Road, Haidian District, Beijing 100191, P. R. China
| | - Hao Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dongda Street, Fengtai District, Beijing 100071, P. R. China
| | - Ke Yao
- School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, P. R. China
| | - Di Zhai
- School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, P. R. China
| | - Pan-He Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dongda Street, Fengtai District, Beijing 100071, P. R. China
| | - Bo Xing
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dongda Street, Fengtai District, Beijing 100071, P. R. China
| | - Ning Cui
- The 154 Hospital, People's Liberation Army, 104 Nan-Hu Road, Shihe District, Xinyang 464000, P. R. China
| | - Zhen-Dong Yang
- The 154 Hospital, People's Liberation Army, 104 Nan-Hu Road, Shihe District, Xinyang 464000, P. R. China
| | - Chun Yuan
- The 154 Hospital, People's Liberation Army, 104 Nan-Hu Road, Shihe District, Xinyang 464000, P. R. China
| | - Xiao-Ai Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dongda Street, Fengtai District, Beijing 100071, P. R. China
| | - Zhe Xu
- The 302 Hospital, People's Liberation Army, No. 100, West 4th Ring Road, Fengtai District, Beijing 100039, P. R. China
| | - Wu-Chun Cao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dongda Street, Fengtai District, Beijing 100071, P. R. China. .,School of Public Health, Shandong University, Jinan 250012, P.R. China
| | - Zeping Hu
- School of Pharmaceutical Sciences, Tsinghua University, Beijing 100084, P. R. China.
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dongda Street, Fengtai District, Beijing 100071, P. R. China. .,School of Public Health, Shandong University, Jinan 250012, P.R. China.,Microbiology and Epidemiology, Beijing Key Laboratory of Vector Borne and Natural Focus Infectious Diseases, Beijing, P. R. China
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20
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Lan LM, Yang ZD, Sun SL, Wen D, Kureshi A, Zeye MMJ, Zha L, Li M. Application of Demirjian's and Cameriere's Method in Dental Age Estimation of 8-16 Year Old Adolescents from Hunan Han Nationality. Fa Yi Xue Za Zhi 2019; 35:406-410. [PMID: 31532147 DOI: 10.12116/j.issn.1004-5619.2019.04.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Indexed: 11/30/2022]
Abstract
Abstract Objective To apply Demirjian's and Cameriere's method for dental age estimation of adolescents from Hunan Han nationality, and compare the accuracy of the two methods. Methods A total of 480 orthopantomograms of?8-16 year?old adolescents from Hunan Han nationality?with no special diseases and good nutritional status were collected?by Xiangya Stomatological Hospital of Central South University from January, 2016 to July, 2017, among them 236 males and 244 females. The dental age of each adolescent was determined by Demirjian's method and Cameriere's method, respectively, and the paired t-test of the estimated dental age and the chronological age determined by the two methods was conducted by SPSS 20.0 software to compare the difference between estimated dental age and chronological age. Results Mean chronological age of males and females was 11.91 and 11.88 years, respectively. The estimated dental age determined by Demirjian's method showed an underestimate of chronological age by an average of 0.11 years (males) and 0.15 years (females), while the estimated dental age determined by Cameriere's method showed an underestimate of chronological age by an average of 0.83 years (males) and 0.72 years (females). Conclusion Demirjian's method is more accurate than Cameriere's method in dental age estimation of adolescents from Hunan Han nationality, therefore more suitable for dental age estimation of adolescents in this region.
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Affiliation(s)
- L M Lan
- Department of Forensic Medicine, School of Basic Medical Science, Central South University, Changsha 410013, China
| | - Z D Yang
- Department of Forensic Medicine, School of Basic Medical Science, Central South University, Changsha 410013, China
| | - S L Sun
- Department of Forensic Medicine, School of Basic Medical Science, Central South University, Changsha 410013, China
| | - D Wen
- Department of Forensic Medicine, School of Basic Medical Science, Central South University, Changsha 410013, China
| | - A Kureshi
- Basic Medical College of Xinjiang Medical University, Urumqi 830011, China
| | - M M J Zeye
- Department of Forensic Medicine, School of Basic Medical Science, Central South University, Changsha 410013, China
| | - L Zha
- Department of Forensic Medicine, School of Basic Medical Science, Central South University, Changsha 410013, China
| | - M Li
- Department of Periodontology, Xiangya Stomatological Hospital, Central South University, Changsha 410008, China
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Zhang SF, Du J, Mi XM, Lu QB, Bai JY, Cui N, Yang ZD, Wang ZB, Zhang XA, Zhang PH, Li H, Liu W. Rickettsia typhi infection in severe fever with thrombocytopenia patients, China. Emerg Microbes Infect 2019; 8:579-584. [PMID: 30958100 PMCID: PMC6455236 DOI: 10.1080/22221751.2019.1599696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Shao-Fei Zhang
- a State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing Key Laboratory of Vector Borne and Natural Focus Infectious Diseases , Beijing , People's Republic of China
| | - Juan Du
- b School of Public Health , Peking University , Beijing , People's Republic of China
| | - Xian-Miao Mi
- a State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing Key Laboratory of Vector Borne and Natural Focus Infectious Diseases , Beijing , People's Republic of China
| | - Qing-Bin Lu
- b School of Public Health , Peking University , Beijing , People's Republic of China
| | - Jie-Ying Bai
- c Laboratory Animal Center , Academy of Military Medical Sciences , Beijing , People's Republic of China
| | - Ning Cui
- d The 154 Hospital , People's Liberation Army , Xinyang , People's Republic of China
| | - Zhen-Dong Yang
- d The 154 Hospital , People's Liberation Army , Xinyang , People's Republic of China
| | - Zhi-Bo Wang
- a State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing Key Laboratory of Vector Borne and Natural Focus Infectious Diseases , Beijing , People's Republic of China
| | - Xiao-Ai Zhang
- a State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing Key Laboratory of Vector Borne and Natural Focus Infectious Diseases , Beijing , People's Republic of China
| | - Pan-He Zhang
- a State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing Key Laboratory of Vector Borne and Natural Focus Infectious Diseases , Beijing , People's Republic of China
| | - Hao Li
- a State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing Key Laboratory of Vector Borne and Natural Focus Infectious Diseases , Beijing , People's Republic of China
| | - Wei Liu
- a State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing Key Laboratory of Vector Borne and Natural Focus Infectious Diseases , Beijing , People's Republic of China
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Zhang SF, Yang ZD, Huang ML, Wang ZB, Hu YY, Miao D, Dai K, Du J, Cui N, Yuan C, Li H, Li XK, Zhang XA, Zhang PH, Mi XM, Lu QB, Liu W. Preexisting chronic conditions for fatal outcome among SFTS patients: An observational Cohort Study. PLoS Negl Trop Dis 2019; 13:e0007434. [PMID: 31136581 PMCID: PMC6555536 DOI: 10.1371/journal.pntd.0007434] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 06/07/2019] [Accepted: 05/02/2019] [Indexed: 02/07/2023] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease that is caused by a novel bunyavirus SFTSV. Currently our knowledge of the host-related factors that influence the pathogenesis of disease is inadequate to allow prediction of fatal outcome. Here we conducted a prospective study of the largest database on the SFTS patients, to identify the presence of comorbidities in SFTS, and estimate their effect on the fatal outcome. Among 2096 patients eligible for inclusion, we identified nine kinds of comorbidities, from which hyperlipidemia (12.2%; 95% CI: 10.8%–13.6%), hypertension (11.0%; 95% CI: 9.6%–12.3%), chronic viral hepatitis (CVH) (9.3%; 95% CI: 8.1%–10.5%), and diabetes mellitus (DM) (6.8%; 95% CI: 5.7%–7.9%) were prevalent. Higher risk of death was found in patients with DM (adjusted OR = 2.304; 95% CI: 1.520–3.492; P<0.001), CVH (adjusted OR = 1.551; 95% CI: 1.053–2.285; P = 0.026) and chronic obstructive pulmonary diseases (COPD) (adjusted OR = 2.170; 95% CI: 1.215–3.872; P = 0.009) after adjusting for age, sex, delay from disease onset to admission and treatment regimens. When analyzing the comorbidities separately, we found that the high serum glucose could augment diseases severity. Compared to the group with max glucose < 7.0 mmol/L, patients with glucose between 7.0–11.1 mmol/L and glucose ≥11.1 mmol/L conferred higher death risk, with the adjusted OR to be 1.467 (95% CI: 1.081–1.989; P = 0.014) and 3.443 (95% CI: 2.427–4.884; P<0.001). Insulin therapy could effectively reduce the risk of severe outcome in DM patients with the adjusted OR 0.146 (95% CI: 0.058–0.365; P<0.001). For CVH patients, severe damage of liver and prolongation of blood coagulation time, as well as high prevalence of bleeding phenotype were observed. These data supported the provocative hypothesis that treating SFTS related complications can attain potentially beneficial effects on SFTS. SFTS now brings about a substantial global public health concern. Preexisting chronic conditions were thought to increase risk of severe SFTSV infections, however with sparse data mining efforts. In this study, we quantified the frequency of chronic comorbidities in SFTS, estimated their contribution to disease severity, and separately evaluated the effect from diabetes mellitus and chronic viral hepatitis on resulting in fatal outcome.
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Affiliation(s)
- Shao-Fei Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, PR China
| | - Zhen-Dong Yang
- The 990 Hospital of Chinese People's Liberation Army Joint Logistic Support Force, Xinyang, PR China
| | - Mao-Lin Huang
- The 990 Hospital of Chinese People's Liberation Army Joint Logistic Support Force, Xinyang, PR China
| | - Zhi-Bo Wang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, PR China
| | - Yuan-Yuan Hu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, PR China
| | - Dong Miao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, PR China
| | - Ke Dai
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, PR China
| | - Juan Du
- Department of Laboratorial Science and Technology, School of Public Health, Peking University, Beijing, PR China
| | - Ning Cui
- The 990 Hospital of Chinese People's Liberation Army Joint Logistic Support Force, Xinyang, PR China
| | - Chun Yuan
- The 990 Hospital of Chinese People's Liberation Army Joint Logistic Support Force, Xinyang, PR China
| | - Hao Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, PR China
| | - Xiao-Kun Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, PR China
| | - Xiao-Ai Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, PR China
| | - Pan-He Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, PR China
| | - Xian-Miao Mi
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, PR China
- * E-mail: (XMM); (QBL); (WL)
| | - Qing-Bin Lu
- Department of Laboratorial Science and Technology, School of Public Health, Peking University, Beijing, PR China
- * E-mail: (XMM); (QBL); (WL)
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, PR China
- Beijing Key Laboratory of Vector Borne and Natural Focus Infectious Diseases, Beijing, PR China
- * E-mail: (XMM); (QBL); (WL)
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Tao DD, Liu JS, Yang ZD, Wilson BS, Zhou N. Bilaterally Combined Electric and Acoustic Hearing in Mandarin-Speaking Listeners: The Population With Poor Residual Hearing. Trends Hear 2019; 22:2331216518757892. [PMID: 29451107 PMCID: PMC5818091 DOI: 10.1177/2331216518757892] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The hearing loss criterion for cochlear implant candidacy in mainland China is extremely stringent (bilateral severe to profound hearing loss), resulting in few patients with substantial residual hearing in the nonimplanted ear. The main objective of the current study was to examine the benefit of bimodal hearing in typical Mandarin-speaking implant users who have poorer residual hearing in the nonimplanted ear relative to those used in the English-speaking studies. Seventeen Mandarin-speaking bimodal users with pure-tone averages of ∼80 dB HL participated in the study. Sentence recognition in quiet and in noise as well as tone and word recognition in quiet were measured in monaural and bilateral conditions. There was no significant bimodal effect for word and sentence recognition in quiet. Small bimodal effects were observed for sentence recognition in noise (6%) and tone recognition (4%). The magnitude of both effects was correlated with unaided thresholds at frequencies near voice fundamental frequencies (F0s). A weak correlation between the bimodal effect for word recognition and unaided thresholds at frequencies higher than F0s was identified. These results were consistent with previous findings that showed more robust bimodal benefits for speech recognition tasks that require higher spectral resolution than speech recognition in quiet. The significant but small F0-related bimodal benefit was also consistent with the limited acoustic hearing in the nonimplanted ear of the current subject sample, who are representative of the bimodal users in mainland China. These results advocate for a more relaxed implant candidacy criterion to be used in mainland China.
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Affiliation(s)
- Duo-Duo Tao
- 1 Department of Ear, Nose, and Throat, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Ji-Sheng Liu
- 1 Department of Ear, Nose, and Throat, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Zhen-Dong Yang
- 1 Department of Ear, Nose, and Throat, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Blake S Wilson
- 2 Departments of Surgery, Biomedical Engineering, and Electrical and Computer Engineering, Duke University, Durham, NC, USA
| | - Ning Zhou
- 3 Department of Communication Sciences and Disorders, East Carolina University, Greenville, NC, USA
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Zhuang L, Sun Y, Cui XM, Tang F, Hu JG, Wang LY, Cui N, Yang ZD, Huang DD, Zhang XA, Liu W, Cao WC. Transmission of Severe Fever with Thrombocytopenia Syndrome Virus by Haemaphysalis longicornis Ticks, China. Emerg Infect Dis 2019; 24. [PMID: 29664718 PMCID: PMC5938789 DOI: 10.3201/eid2405.151435] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
We demonstrate maintenance and transmission of severe fever with thrombocytopenia syndrome virus by Haemaphysalis longicornis ticks in the larva, nymph, and adult stages with dissemination in salivary gland, midgut, and ovarian tissues. The H. longicornis tick is a competent vector to transmit this virus in both transovarial and transstadial modes.
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He YJ, Mai CY, Chen LJ, Zhang XM, Zhou JY, Cai M, Chen YX, Qi QL, Yang ZD. [Clinical characteristics and risk factors in pregnancy with severe community-acquired pneumonia]. Zhonghua Fu Chan Ke Za Zhi 2019; 53:842-848. [PMID: 30585023 DOI: 10.3760/cma.j.issn.0529-567x.2018.12.008] [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 analyze clinical characteristics of severe community-acquired pneumonia during pregnancy and its outcomes, and to explore the relevant risk factors. Methods: From September 2012 to September 2017, 324 398 pregnancies admitted in 7 tertiary hospitals were included. Clinical data of 33 cases of pregnancies with severe community-acquired pneumonia (severe pneumonia group) and 214 cases of pregnancies with common community-acquired pneumonia (control group) were reviewed retrospectively, including the clinical information, manifestations, laboratory examinations and pregnancy outcomes. Relevant risk factors were analyzed by multivariate logistic regression analysis. Results: (1) General data: pregnancies with severe community-acquired pneumonia accounted for 0.010% (33/324 398) of hospitalized pregnancies, the gestational age of two groups were (28±8) and (23±8) weeks, body mass index were (21.7±2.1) and (25.5±3.4) kg/m(2), rate of low income were 54.5% (18/33) and 31.8% (68/214) , respectively. The differences between two groups were all statistically significant (all P<0.05). No significant differences were found in age, pregnancy and parity times, rate of main pregnant complications such as diabetes and hypertension, educational level, asthma and onset seasons between two groups (all P>0.05). (2) Clinical data: the severe pneumonia group had significantly higher incidence of fever [100.0% (33/33) vs 75.2% (161/214) ], shortness of breath (90.9% vs 16.8%) compared with the control group (all P<0.05) .The median peripheral leukocytes counts were 12.3×10(9)/L and 10.2×10(9)/L, the hemoglobin level were (84±18) and (107±14) g/L,the albumin level were (26±4) and (37±3) g/L, the median serum urea nitrogen level were 3.7 and 2.4 mmol/L, the serum creatinine level were (72±25) and (45±11) μmol/L, respectively in two groups. The differences were all statistically significant (all P<0.05). No significantly statistical differences were found in coagulation indicator and cardiac function between two groups (all P>0.05). (3) Treatments: in severe pneumonia group, 12 patients (36.4%,12/33) needed invasive mechanical ventilation, 9 patients (27.3%,9/33) needed non-invasive mechanical ventilation, average time of mechanical ventilation was (7±4) days;8 patients (24.2%,8/33) with septic shock needed vasoactive drugs. However, there was no patient in control group needing mechanical ventilation and vasoactive drugs. (4) Pregnant outcomes: one patient (3.0%,1/33) died in the severe pneumonia group, while no death occurred in the control group. The hospital stay between two groups were (15.1±4.1) and (7.0±1.9) days, the rates of abortion and stillbirth between two groups were 42.4% (14/33) and 3.3% (7/214) , the rates of premature were 10/19 and 6.3% (13/207) , the rates of cesarean were 15/19 and 43.0% (89/207) , the rates of low birth weight newborn were 17/19 and 14.0% (29/207) , the rates of infected newborn were 15/19 and 10.1% (21/207) , the birth weights were (2 165±681) and (3 102±400) g, respectively. The differences between two groups were all statistically significant (all P<0.05). (5) Multivariate logistic regression analysis demonstrated that anemia, low body mass index, hypoproteinemia were risk factors for severe pneumonia in pregnancy (all P<0.05) . Conclusions: Pregnancy with severe community-acquired pneumonia may be complicated by multiple organ dysfunctions, lead to adverse outcomes. Anemia, malnutrition are risk factors for pregnancy with severe pneumonia. Active and effective treatment may improve its prognosis.
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Affiliation(s)
- Y J He
- Department of Intensive Care Unit, Foshan Woman and Children Hospital, Southern Medical University, Foshan 528000, China
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Yang ZD, Yang XY, Liu T, Chang ZW, Yin YB, Zhang XB, Yan JM, Jiang Q. In Situ CVD Derived Co-N-C Composite as Highly Efficient Cathode for Flexible Li-O 2 Batteries. Small 2018; 14:e1800590. [PMID: 30047210 DOI: 10.1002/smll.201800590] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Revised: 05/15/2018] [Indexed: 05/27/2023]
Abstract
To promote the development of high energy Li-O2 batteries, it is important to design and construct a suitable and effective oxygen-breathing cathode. Herein, activated cobalt-nitrogen-doped carbon nanotube/carbon nanofiber composites (Co-N-CNT/CNF) as the effective cathodes for Li-O2 batteries are prepared by in situ chemical vapor deposition (CVD). The unique architecture of these electrodes facilitates the rapid oxygen diffusion and electrolyte penetration. Meanwhile, the nitrogen-doped carbon nanotube/carbon nanofiber (N-CNT/CNF) and Co/CoNx serve as reaction sites to promote the formation/decomposition of discharge product. Li-O2 batteries with Co-N-CNT/CNF cathodes exhibit superior electrochemical performance in terms of a positive discharge plateau (2.81 V) and a low charge overpotential (0.61 V). Besides, Li-O2 batteries also present a high discharge capacity (11512.4 mAh g-1 at 100 mA g-1 ), and a long cycle life (130 cycles). Meanwhile, the Co-N-CNT/CNF cathode also has an excellent flexibility, thus the assembled flexible battery with Co-N-CNT/CNF can work normally and hold a wonderful capacity rate under various bending conditions.
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Affiliation(s)
- Zhen-Dong Yang
- Key Laboratory of Automobile Materials (Jilin University) of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Xiao-Yang Yang
- Key Laboratory of Automobile Materials (Jilin University) of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Tong Liu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Zhi-Wen Chang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yan-Bin Yin
- Key Laboratory of Automobile Materials (Jilin University) of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022, China
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Xin-Bo Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, P. R. China
| | - Jun-Min Yan
- Key Laboratory of Automobile Materials (Jilin University) of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022, China
| | - Qing Jiang
- Key Laboratory of Automobile Materials (Jilin University) of Education, School of Materials Science and Engineering, Jilin University, Changchun, 130022, China
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Li H, Lu QB, Xing B, Zhang SF, Liu K, Du J, Li XK, Cui N, Yang ZD, Wang LY, Hu JG, Cao WC, Liu W. Epidemiological and clinical features of laboratory-diagnosed severe fever with thrombocytopenia syndrome in China, 2011-17: a prospective observational study. Lancet Infect Dis 2018; 18:1127-1137. [PMID: 30054190 DOI: 10.1016/s1473-3099(18)30293-7] [Citation(s) in RCA: 157] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 04/02/2018] [Accepted: 05/01/2018] [Indexed: 11/18/2022]
Abstract
BACKGROUND Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease with an increasing case number and extensive geographical expansion, raising concerns locally and globally; however, the description of its clinical features needs to be addressed by large studies. We aimed to determine all the clinical features of SFTS in a large population of patients in an endemic area. METHODS In this prospective observational study, data were collected on patients admitted to the People's Liberation Army Hospital in Xinyang, Henan Province, China, with laboratory-diagnosed SFTS. Demographic, clinical, laboratory, and treatment data were collected for each patient, and patients were followed up within 2 weeks after discharge or discontinuation of treatment. The association between each demographic, clinical, and laboratory variable with a fatal outcome was assessed. A clinical scoring model was designed for the early prediction of a fatal outcome, and the effect of treatment on outcome was analysed. FINDINGS Between April 1, 2011, and Oct 31, 2017, 2096 patients with laboratory-confirmed SFTS were admitted. Mean age at admission was 61·4 years (SD 12·2) and 1239 (59%) patients were female. The case fatality rate (CFR) was 16·2% (95% CI 14·6-17·8). A higher risk was associated with being male (unadjusted odds ratio [OR] 1·45, 95% CI 1·15-1·83; p=0·002), older age (for a 10-year increase, unadjusted OR 1·82, 95% CI 1·62-2·04; p<0·0001), longer delay in admission (for every extra day taken before admission to hospital, unadjusted OR 1·18, 1·12-1·24; p<0·0001), presence of diarrhoea (adjusted OR 1·44, 1·12-1·87; p=0·005) or dyspnoea (adjusted OR 8·35, 5·97-11·69; p<0·0001), and development of haemorrhagic signs (adjusted OR 2·79, 95% CI 2·18-3·57; p<0·0001) or neurological symptoms (adjusted OR 30·26, 21·39-42·81; p<0·0001). Laboratory variables that were associated with death included abnormal concentrations of lactate dehydrogenase, aspartate aminotransferase, and blood urea nitrogen, and abnormal neutrophil percentage, which together with age and neurological symptoms were combined in the clinical scoring system. A total score of more than 8 was the optimal threshold to predict risk of death for patients who were evaluated within 6 days after symptom onset (area under the curve 0·879, 95% CI 0·855-0·902). For all participants, viraemia was a strong predictor of fatal outcome (all p<0·0001). Ribavirin therapy was effective in reducing CFR from 6·25% (15 of 240 participants) to 1·16% (two of 173 participants), but only in patients with a viral load below 1×106 copies per mL (hazard ratio 9·72, 95% CI 1·30-72·87; p=0·027). INTERPRETATION The changing epidemiological features and high CFR of SFTS underscore the necessity of continued surveillance. Early prediction of fatal outcome can be attained by monitoring of clinical and laboratory data. Ribavirin should be applied early, with best results achieved before the viral load reaches 1 × 106 copies per mL. FUNDING National Natural Science Foundation of China.
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Affiliation(s)
- Hao Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Qing-Bin Lu
- School of Public Health, Peking University, Beijing, China
| | - Bo Xing
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Shao-Fei Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Kun Liu
- School of Public Health, Fourth Military Medical University, Xi'an, China
| | - Juan Du
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Xiao-Kun Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Ning Cui
- the 154 Hospital, People's Liberation Army, Xinyang, China
| | - Zhen-Dong Yang
- the 154 Hospital, People's Liberation Army, Xinyang, China
| | - Li-Yuan Wang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Jian-Gong Hu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Wu-Chun Cao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China.
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Zhu BY, Yang ZD, Chen XR, Zhou J, Gao YH, Xian CJ, Chen KM. Exposure Duration Is a Determinant of the Effect of Sinusoidal Electromagnetic Fields on Peak Bone Mass of Young Rats. Calcif Tissue Int 2018; 103:95-106. [PMID: 29362823 DOI: 10.1007/s00223-018-0396-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 01/17/2018] [Indexed: 11/26/2022]
Abstract
We proposed a three-step strategy to obtain the optimal therapeutic parameters, which is composed of large-scale screening at cellular level, verification in animal experiments, and confirmation by a clinical trial. The objective of the current study was to test the feasibility of our strategy. Newborn rat calvarial osteoblasts were treated by 50 Hz 1.8 mT sinusoidal electromagnetic fields (SEMFs) with 0.5, 1.0, 1.5, 2.0, 2.5, and 3.0 h/days, respectively. The osteogenic differentiation and maturation of the osteoblast were assayed and compared to obtain the optimal duration. One-month-old growing rats were then treated by the same SEMFs with 0.5, 1.5, and 2.5 h/days, respectively, and the peak bone mass was analyzed after 2 months. It was found that the optimal exposure duration to promote the osteogenic differentiation and maturation of osteoblasts was 1.5 h/days, judging by the increasing degrees of ALP activity, calcified nodules formed, the gene and protein expression levels of Runx-2, BMP-2, and Col-I, as well as the expression levels of signaling proteins of the BMP-2/Smad1/5/8 pathway. The highest increase of peak bone mass after 2 months was also obtained by 1.5 h/days, judging by the results of X-ray dual-energy absorptiometry, mechanical property analysis, micro-CT scanning, and serum bone turnover marker examinations. The above results indicated that exposure duration is a determinant for the therapeutic effect of EMFs, and the optimal therapeutic effects only can be obtained by the optimal exposure duration.
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Affiliation(s)
- B Y Zhu
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, People's Republic of China
- Institute of Orthopaedics, Lanzhou General Hospital of CPLA, Lanzhou, 730050, People's Republic of China
| | - Z D Yang
- School of Life Science and Engineering, Lanzhou University of Technology, Lanzhou, 730050, People's Republic of China.
| | - X R Chen
- College of Life Sciences, Northwest A & F University, Yanglin, 712100, People's Republic of China
| | - J Zhou
- Institute of Orthopaedics, Lanzhou General Hospital of CPLA, Lanzhou, 730050, People's Republic of China
| | - Y H Gao
- Institute of Orthopaedics, Lanzhou General Hospital of CPLA, Lanzhou, 730050, People's Republic of China
| | - C J Xian
- Sansom Institute for Health Research, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA, 5001, Australia
| | - K M Chen
- Institute of Orthopaedics, Lanzhou General Hospital of CPLA, Lanzhou, 730050, People's Republic of China.
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Xing B, Li XK, Zhang SF, Lu QB, Du J, Zhang PH, Yang ZD, Cui N, Guo CT, Cao WC, Zhang XA, Liu W. Polymorphisms and haplotypes in the promoter of the TNF-α gene are associated with disease severity of severe fever with thrombocytopenia syndrome in Chinese Han population. PLoS Negl Trop Dis 2018; 12:e0006547. [PMID: 29939989 PMCID: PMC6034906 DOI: 10.1371/journal.pntd.0006547] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 02/23/2018] [Revised: 07/06/2018] [Accepted: 05/20/2018] [Indexed: 11/23/2022] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease that is caused by a novel bunyavirus, SFTSV. We assessed whether the single nucleotide polymorphisms (SNPs) in the tumor necrosis factor-alpha (TNF-α) were associated with risk to severity of SFTS. Five TNF-α SNPs (SNP1: T-1031C; SNP2: C-863A; SNP3: C-857T; SNP4: G-308A; SNP5: G-238A) were genotyped in 987 hospitalized SFTS patients and 633 asymptomatic/mild SFTSV-infected subjects of Chinese Han origin. Multivariate logistic regression analysis was used to calculate adjusted odds ratios (ORs) and 95% confidence intervals (95% CIs). The hospitalized SFTS patients had significantly lower frequency of G-238A A allele than those with mild/asymptomatic infection (P = 0.006). Furthermore, T-1031C C allele (P < 0.001) and G-238A A allele (P < 0.001) were significantly associated with decreased risk of death. Multiple haplotypes were significantly associated with decreased risk of SFTS hospital admission (SNP1-2, CC; SNP1-3, CCC; SNP1-4, CCCG; SNP1-5, CCCGA; SNP2-4, CCGA; SNP3-5, CGA; SNP4-5, GA) and death (SNP1-2, CA; SNP1-3, CAG; SNP1-4, CACG; SNP1-5, CACGG; SNP2-3, AC; SNP2-4, ACG; SNP2-5, ACGG) after correction for multiple comparisons. By using the ELISA assay, we observed that TNF-α concentration of hospitalized patients was significantly increased in acute phase than in convalescent phase (P < 0.001). Elevated TNF-α concentration was also revealed from fatal patients (P < 0.001). The -238A allele was associated with decreased serum TNF-α levels in SFTS patients in acute phase (P = 0.01). Our findings suggest that polymorphisms in TNF-α gene may play a role in mediating the risk to disease severity of SFTS in Chinese Han population. Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease that is caused by a novel bunyavirus. The current study disclosed the single nucleotide polymorphisms (SNPs) in the tumor necrosis factor-alpha (TNF-α) were associated with risk to disease severity of SFTS. These findings suggest that polymorphisms in TNF-α gene may play a role in mediating the risk to disease severity of SFTS in Chinese Han population. The study will be of interest to either the clinicians devoted to the prevention and therapy of SFTS or the geneticists devoted to studying the genetic susceptibility mechanisms of common diseases.
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Affiliation(s)
- Bo Xing
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R, China
| | - Xiao-Kun Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R, China
| | - Shao-Fei Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R, China
| | - Qing-Bin Lu
- School of Public Health, Peking University, Beijing, P. R, China
| | - Juan Du
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R, China
| | - Pan-He Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R, China
| | - Zhen-Dong Yang
- The 154 Hospital, People's Liberation Army, Xinyang, P. R, China
| | - Ning Cui
- The 154 Hospital, People's Liberation Army, Xinyang, P. R, China
| | - Chen-Tao Guo
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R, China
| | - Wu-Chun Cao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R, China
| | - Xiao-Ai Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R, China
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R, China
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Xu W, Li XK, Lu QB, Yang ZD, Du J, Xing B, Cui N, Zhang XA, Zhang SF, Yang XX, Liu W, Chen WW. Association between peripheral γδ T cell subsets and disease progression of severe fever with thrombocytopenia syndrome virus infection. Pathog Dis 2018; 75:4037127. [PMID: 28859400 DOI: 10.1093/femspd/ftx086] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2017] [Accepted: 07/25/2017] [Indexed: 11/15/2022] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is an emerging tick-borne infectious disease caused by SFTS virus. The cellular immune responses during SFTS virus infection have not been fully understood. This study examined the association between circulating γδ T cell subsets and clinical outcome of SFTS patients from China. A total of 101 hospitalized SFTS patients and 28 healthy controls were enrolled. Peripheral blood was collected, and lymphocyte subgroups and γδ T cell frequencies were evaluated by flow cytometry analysis. Their association with patients' outcome was also investigated. Starting from Week 1, the Vδ1 cells of patients were increased to significantly higher level at Month 3 after disease onset than the controls (P < 0.05), followed by a decrease to the normal level in Year 1. In contrast, the Vδ2 cells displayed significant lower level than the controls from Week 2 to Year 1. On Week 2, the Vδ2 cells demonstrated a significant decrease in the severe patients than both the mild and controls (P < 0.05). The adverse disease progression is accompanied by the reduction of Vδ2 cells, suggesting the key role of Vδ2 cells in the disease progression.
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Affiliation(s)
- Wen Xu
- Treatment and Research Centre for Infectious Diseases, The 302 Hospital, People's Liberation Army, No. 100, West 4th Ring Road, Beijing 100039, P. R. China
| | - Xiao-Kun Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dong-Da Street, Fengtai District, Beijing 100071, P. R. China
| | - Qing-Bin Lu
- Department of Laboratorial Science and Technology, School of Public Health, Peking University, No. 38, Xueyuan Road, Haidian District, Beijing 100191, P. R. China.,Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, School of Public Health, Peking University, No. 38, Xueyuan Road, Haidian District, Beijing 100191, P. R. China
| | - Zhen-Dong Yang
- Department of Infectious Disease, The 154 Hospital, People's Liberation Army, No.104, Nan-hu Road, Shi-he District, Xinyang 464000, P. R. China
| | - Juan Du
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dong-Da Street, Fengtai District, Beijing 100071, P. R. China
| | - Bo Xing
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dong-Da Street, Fengtai District, Beijing 100071, P. R. China
| | - Ning Cui
- Department of Infectious Disease, The 154 Hospital, People's Liberation Army, No.104, Nan-hu Road, Shi-he District, Xinyang 464000, P. R. China
| | - Xiao-Ai Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dong-Da Street, Fengtai District, Beijing 100071, P. R. China
| | - Shao-Fei Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dong-Da Street, Fengtai District, Beijing 100071, P. R. China
| | - Xin-Xin Yang
- Treatment and Research Centre for Infectious Diseases, The 302 Hospital, People's Liberation Army, No. 100, West 4th Ring Road, Beijing 100039, P. R. China
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, 20 Dong-Da Street, Fengtai District, Beijing 100071, P. R. China
| | - Wei-Wei Chen
- Treatment and Research Centre for Infectious Diseases, The 302 Hospital, People's Liberation Army, No. 100, West 4th Ring Road, Beijing 100039, P. R. China
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Yang ZD, Chang ZW, Zhang Q, Huang K, Zhang XB. Decorating carbon nanofibers with Mo 2C nanoparticles towards hierarchically porous and highly catalytic cathode for high-performance Li-O 2 batteries. Sci Bull (Beijing) 2018; 63:433-440. [PMID: 36658938 DOI: 10.1016/j.scib.2018.02.014] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [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: 11/30/2017] [Revised: 02/07/2018] [Accepted: 02/07/2018] [Indexed: 01/21/2023]
Abstract
A facile synthesis of the hierarchically porous cathode with Mo2C nanoparticles through the electrospinning technique and heat treatment is proposed. The carbonization temperature of the precursors is the key factor for the formation of Mo2C nanoparticles on the carbon nanofibers (MCNFs). Compared with the Mo2N nanoparticles embedded into N-doped carbon nanofibers film (MNNFs) and N-doped carbon nanofibers film (NFs), the battery with MCNFs cathode is capable of operation with a high-capacity (10,509 mAh g-1 at 100 mA g-1), a much reduced discharge-charge voltage gap, and a long-term life (124 cycles at 200 mA g-1 with a specific capacity limit of 500 mAh g-1). These excellent performances are derived from the synergy of the following advantageous factors: (1) the hierarchically self-standing and binder-free structure of MCNFs could ensure the high diffusion flux of Li+ and O2 as well as avoid clogging of the discharge product, bulk Li2O2; (2) the well dispersed Mo2C nanoparticles not only afford rich active sites, but also facilitate the electronic transfer for catalysis.
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Affiliation(s)
- Zhen-Dong Yang
- Key Laboratory of Automobile Materials, Ministry of Education, Department of Materials Science and Engineering, Jilin University, Changchun 130022, China; State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Zhi-Wen Chang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Qi Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; Hunan Key Laboratory for Micro-Nano Energy Materials and Device, Xiangtan University, Xiangtan 411105, China
| | - Keke Huang
- State Key Laboratory of Inorganic Synthesis & Preparative Chemistry, Jilin University, Changchun 130022, China.
| | - Xin-Bo Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
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Xu TG, Shi R, Lu N, Zhang J, Bai RS, Yang ZD, Zhou J. Adsorption of tobacco-specific nitrosamine 4-(methylnitrosamino) -1- (3-pyridyl)-1-butanone from aqueous solution with graphene aerogel. ACTA ACUST UNITED AC 2018. [DOI: 10.1088/1757-899x/324/1/012028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Li H, Cui XM, Cui N, Yang ZD, Hu JG, Fan YD, Fan XJ, Zhang L, Zhang PH, Liu W, Cao WC. Human Infection with Novel Spotted Fever Group Rickettsia Genotype, China, 2015. Emerg Infect Dis 2018; 22:2153-2156. [PMID: 27869588 PMCID: PMC5189162 DOI: 10.3201/eid2212.160962] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Only 4 species of spotted fever group rickettsiae have been detected in humans in China. However, phylogenetic analysis of samples from 5 ill patients in China indicated infection with a novel spotted fever group Rickettsia, designated Rickettsia sp. XY99. Clinical signs resembled those of severe fever with thrombocytopenia syndrome.
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Lu QB, Li H, Zhang PH, Cui N, Yang ZD, Fan YD, Cui XM, Hu JG, Guo CT, Zhang XA, Liu W, Cao WC. Severe Fever with Thrombocytopenia Syndrome Complicated by Co-infection with Spotted Fever Group Rickettsiae, China. Emerg Infect Dis 2018; 22:1957-1960. [PMID: 27767921 PMCID: PMC5088031 DOI: 10.3201/eid2211.161021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
During 2013–2015 in central China, co-infection with spotted fever group rickettsiae was identified in 77 of 823 patients infected with severe fever with thrombocytopenia syndrome virus. Co-infection resulted in delayed recovery and increased risk for death, prompting clinical practices in the region to consider co-infection in patients with severe fever with thrombocytopenia syndrome.
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Zhang XA, Guo CT, Lu QB, Hu JG, Cui N, Yang ZD, Peng W, Liu R, Hu CY, Qin SL, Wang XJ, Ding SJ, Huang DD, Liu W, Cao WC. The platelet derived growth factor-B polymorphism is associated with risk of severe fever with thrombocytopenia syndrome in Chinese individuals. Oncotarget 2017; 7:33340-9. [PMID: 27147565 PMCID: PMC5078099 DOI: 10.18632/oncotarget.9043] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2015] [Accepted: 04/11/2016] [Indexed: 01/29/2023] Open
Abstract
Background Severe fever with thrombocytopenia syndrome (SFTS) is an emerging infectious disease caused by a novel bunyavirus named SFTS virus (SFTSV). We hypothesize that host genetic variations may contribute to susceptibility to SFTS. Results Compared with the rs1800818 AA genotype, AG + GG genotypes were significantly associated with increased susceptibility to SFTS (odds ratio, 1.66, 95% confidence interval = 1.28-2.16; P < 0.001). By using the ELISA assay, we observed that PDGF-BB concentration was significantly reduced in acute phase of patients than in the controls (P < 0.001) and recovered patients at 6 month (P = 0.007) and 12 month (P = 0.003). A persistently reduced PDGF-BB was also revealed from the SFTSV-infected C57BL/6J mice (P < 0.001). The rs1800818 G allele was associated with decreased serum PDGF-BB levels in SFTS patients at their early infection (P = 0.015). In accordance, the relative mRNA levels of the at-risk G allele of 1800818 were lower than those of the A allele in heterozygous cell from acute phase of SFTS patients. PDGF-B rs1800818 conferred no susceptibility to severe or fatal outcome in SFTS patients. Materials and Methods An initially small-scale case-control association study guided the selection of platelet derived growth factor-B (PDGF-B) rs1800818 in 1020 SFTS patients and 1353 controls. Functional analyses were conducted to verify the biological significance of rs1800818 polymorphism. Conclusions Our findings suggest that the PDGF-B rs1800818 polymorphism might play a role in mediating the susceptibility to SFTS.
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Affiliation(s)
- Xiao-Ai Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, P. R. China
| | - Chen-Tao Guo
- Graduate School of Anhui Medical University, Hefei, 230032, P. R. China
| | - Qing-Bin Lu
- School of Public Health, Peking University, Beijing, 100191, P. R. China
| | - Jian-Gong Hu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, P. R. China
| | - Ning Cui
- The 154 Hospital, People's Liberation Army, Xinyang, 464000, P. R. China
| | - Zhen-Dong Yang
- The 154 Hospital, People's Liberation Army, Xinyang, 464000, P. R. China
| | - Wei Peng
- The Shangcheng People's Hospital, Xinyang, 464000, P. R. China
| | - Rong Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, P. R. China
| | - Chun-Yan Hu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, P. R. China
| | - Shu-Li Qin
- The 154 Hospital, People's Liberation Army, Xinyang, 464000, P. R. China
| | - Xian-Jun Wang
- Shandong Provincial Center for Disease Control and Prevention, Jinan, 250001, P. R. China
| | - Shu-Jun Ding
- Shandong Provincial Center for Disease Control and Prevention, Jinan, 250001, P. R. China
| | - Dou-Dou Huang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, P. R. China.,Graduate School of Anhui Medical University, Hefei, 230032, P. R. China
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, P. R. China.,Graduate School of Anhui Medical University, Hefei, 230032, P. R. China
| | - Wu-Chun Cao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, 100071, P. R. China
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Zhang YM, Yang ZD, Li WX, Shi C, Yu YF. [The relationship between the recurrence of benign paroxysmal positional vertigo and the level of bone mineral as well as estrogen in postmenopausal women]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 52:881-884. [PMID: 29262443 DOI: 10.3760/cma.j.issn.1673-0860.2017.12.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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 relationship between the recurrence of benign paroxysmal positional vertigo(BPPV) and the levels of bone mineral density(BMD) and estrogen in postmenopausal women. Methods: A total of 38 postmenopausal women with recurrent BPPV were recruited as study group, in the First Affiliated Hospital of Soochow University from December 2013 to June 2017. Meanwhile, 49 normal menopausal women were included as control. All patients were natural menopausal for over one year.The patients were diagnosed as BPPV based on results of Dix-Hallpike test and Roll-test, with at least two episodes of recurrent onset. In the subjects, BMD was measured by dual X-ray absorptiometry of lumbar vertebrae. Estrogen levels were obtained by testing serum estradiol (E2) levels in early morning fasting venous blood. In the present study, we compared the level of E2 and the value of BMD in two groups by SPSS 21.0. In the study group, patients with decreased BMD were divided into two groups: treatment and untreated group. The recurrence rate of BPPV was compared between the two groups within 12 months. Results: ①The averagel levels of E2 and BMD in the study group were (16.21±11.00)ng/L and -1.68±0.98) respectively, which were significantly lower than those in the control group (t value was 7.03 and 8.05 respectively, both P<0.05). The averagel levels of E2 and BMD incontrol group were(28.52±6.34)ng/L and -0.18±0.77 respectively. ②The number of patients with decreased BMD in the study group (30 cases) was more than that in control group (6 cases), and the difference was statistically significant (P<0.05). ③ The recurrence rate of BPPV in treatment group [17.6%(3/17)] was significantly lower than that of untreated group [61.5%(8/13)], and the difference was statistically significant (P<0.05). Conclusion: Recurrent BPPV in postmenopausal women usually accompany with low levels of estrogen and BMD. Active treatment is helpful for their recurrence of BPPV.
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Affiliation(s)
- Y M Zhang
- Department of Otorhinolaryngology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Z D Yang
- Department of Otorhinolaryngology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - W X Li
- Department of Otorhinolaryngology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - C Shi
- Department of Otorhinolaryngology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Y F Yu
- Department of Otorhinolaryngology, the First Affiliated Hospital of Soochow University, Suzhou 215006, China
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Li XQ, Liu YZ, Guo WF, Solanki MK, Yang ZD, Xiang Y, Ma ZC, Wen YG. The gall wasp Leptocybe invasa (Hymenoptera: Eulophidae) stimulates different chemical and phytohormone responses in two Eucalyptus varieties that vary in susceptibility to galling. Tree Physiol 2017; 37:1208-1217. [PMID: 28938058 DOI: 10.1093/treephys/tpx098] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 07/22/2017] [Indexed: 05/18/2023]
Abstract
Gall-inducing insects produce various types of galls on plants, but little is known about the gall-induction mechanism of these galling insects. The gall wasp Leptocybe invasa Fisher & LaSalle (Hymenoptera: Eulophidae) forms galls of different sizes on several Eucalyptus species. To clarify the physiological responses of Eucalyptus to L. invasa infestation, we measured the dynamics of nitrogen (N), carbon (C), total phenolics, total tannins and four types of phytohormones (zeatin [Z] + zeatin riboside [ZR], gibberellins [GA], indole-3-acetic acid [IAA] and abscisic acid [ABA]) in galled and ungalled leaf tissues of two Eucalyptus horticultural varieties (DH201-2 [Eucalyptus grandis × Eucalyptus camaldulensis] and EA [Eucalyptus exserta]) with different susceptibility to galling throughout the larval developmental stages. Nitrogen, total phenolics, tannins and four kinds of phytohormones strongly accumulated in tissues galled by L. invasa (especially during early larval feeding stages). While N, Z + ZR and GA levels were higher, tannins and ABA levels were lower in the galled tissues on the highly susceptible variety. Nitrogen, total phenolics, GA, Z + ZR and IAA levels in the galled tissues gradually decreased during gall development, but ABA and tannins conversely increased in the galled tissues of the less susceptible variety. Our results suggest that the effects of gall-inducing insects on plants depend not only on the susceptibility of the plant infested but also on the developmental stage of galled tissues. Gall formation process is thus synergistically influenced by both gall-inducing insect and plant genotypes.
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Affiliation(s)
- X Q Li
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, Guangxi, China
| | - Y Z Liu
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, Guangxi, China
| | - W F Guo
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, Guangxi, China
- Guangxi Crop Genetic Improvement and Biotechnology Lab, Guangxi Academy of Agricultural Sciences, Nanning 530007, Guangxi, China
| | - M K Solanki
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, Guangxi, China
| | - Z D Yang
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, Guangxi, China
| | - Y Xiang
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, Guangxi, China
| | - Z C Ma
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, Guangxi, China
| | - Y G Wen
- Guangxi Key Laboratory of Forest Ecology and Conservation, College of Forestry, Guangxi University, Nanning 530004, Guangxi, China
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Li XK, Yang ZD, Du J, Xing B, Cui N, Zhang PH, Li H, Zhang XA, Lu QB, Liu W. Endothelial activation and dysfunction in severe fever with thrombocytopenia syndrome. PLoS Negl Trop Dis 2017; 11:e0005746. [PMID: 28806760 PMCID: PMC5581191 DOI: 10.1371/journal.pntd.0005746] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 09/01/2017] [Accepted: 06/25/2017] [Indexed: 12/07/2022] Open
Abstract
Background Pathogenesis of severe fever with thrombocytopenia syndrome (SFTS) has not been well described yet. Recent studies indicate that SFTSV could replicate in endothelial cells. Here we performed a case-control study to determine whether endothelial activation/dysfunction occurred in SFTSV infection and to identify the biomarkers reflecting endothelial dysfunction. Methodology/Principal findings In a case-control study of 134 SFTS patients and 68 healthy controls, serum levels of plasminogen activator inhibitor 1, tissue plasminogen activator, P-selectin, platelet endothelial cell adhesion molecular, CD40 ligand, E-selectin, vascular endothelial growth factor A, serum amyloid antigen 1 (SAA-1) and vascular cell adhesion molecular 1 were significantly enhanced in the patients than the controls (all P<0.05), indicating the occurrence of endothelial activation/dysfunction in SFTS. The intercellular adhesion molecular 1 (ICAM-1) and SAA-1 at the convalescent phase were also significantly associated with severe patients, after adjusting for the potential confounders. The odds ratio was estimated to be 3.364 (95% CI 1.074–10.534) for ICAM-1, and 1.881 (95% CI 1.166–3.034) for SAA-1, respectively. Cutoff value of 1.1×107 pg/mL SAA-1 or 1.2×106 pg/mL ICAM-1 were found to have moderate power of predicting fatal cases. Conclusions The endothelial dysfunction may be one of the pathogenic mechanism of SFTS. The serum levels of ICAM-1 and SAA-1 might be used to predict adverse outcome. Severe fever with thrombocytopenia syndrome (SFTS) is a tick-borne viral disease and first reported in the rural areas of China. Pathogenesis of the disease has not been well described yet. Recent studies indicated that SFTSV replicated in endothelial cells. So, we performed a case-control study to explore whether endothelial activation/dysfunction occurred in SFTSV infection and to identify biomarkers reflecting endothelial dysfunction. We found that the occurrence of endothelial activation/dysfunction in severe fever with thrombocytopenia syndrome and the serum levels of ICAM-1 and SAA-1 might be used to predict adverse outcome.
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Affiliation(s)
- Xiao-Kun Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
| | - Zhen-Dong Yang
- The 154 Hospital, People’s Liberation Army, Xinyang, P. R. China
| | - Juan Du
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
| | - Bo Xing
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
| | - Ning Cui
- The 154 Hospital, People’s Liberation Army, Xinyang, P. R. China
| | - Pan-He Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
| | - Hao Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
| | - Xiao-Ai Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
| | - Qing-Bin Lu
- Department of Laboratorial Science and Technology, School of Public Health, Peking University, Beijing, P. R. China
- Beijing Key Laboratory of Toxicological Research and Risk Assessment for Food Safety, Beijing, P. R. China
- * E-mail: (WL); (QBL)
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, P. R. China
- * E-mail: (WL); (QBL)
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Zhang XA, Li S, Ching J, Yang ZD, Cui N, Zhang PH, Hu JG, Liu W. A sensitive and specific rapid diagnostic test for severe fever with thrombocytopenia syndrome virus. J Infect 2017; 74:517-519. [PMID: 28188817 DOI: 10.1016/j.jinf.2017.01.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Revised: 01/24/2017] [Accepted: 01/30/2017] [Indexed: 11/28/2022]
Affiliation(s)
- Xiao-Ai Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, PR China
| | - Sabrina Li
- Coyote Bioscience Company, Beijing, PR China
| | - Jesus Ching
- Coyote Bioscience Company, Beijing, PR China; Coyote Bioscience Company, District of Columbia, United States
| | - Zhen-Dong Yang
- The 154 Hospital, People's Liberation Army, Xinyang, PR China
| | - Ning Cui
- The 154 Hospital, People's Liberation Army, Xinyang, PR China
| | - Pan-He Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, PR China
| | - Jian-Gong Hu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, PR China
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, PR China.
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Zhang YM, Yang ZD, Yu YF. [The role of video nystagmography in the diagnosis and treatment of multiple benign paroxysmal positional vertigo]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1435-1437;1443. [PMID: 29871111 DOI: 10.13201/j.issn.1001-1781.2016.18.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Indexed: 11/12/2022]
Abstract
Objective:To explore the role of video nystagmography in the diagnosis and treatment of multiple benign paroxysmal positional vertigo. Method: Eleven patients of 313 patients with benign paroxysmal positional vertigo had been diagnosed as multiple benign paroxysmal positional vertigo.They were post and horizontal semicircular canal ipsilaterally, bilateral post semicircular canal, superior and horizontal semicircular canal ipsilaterally, and bilateral superior semicircular canal benign paroxysmal positional vertigo.Result:The patients were performed Dix-Hallpike test and Roll test under VNG, combined with track record by video nystagmography to confirm the affected sites. Six cases were post and horizontal semicircular canal benign paroxysmal positional vertigo ipsilaterally. Three cases were bilateral posterior semicircular canal benign paroxysmal positional vertigo, one case of superior semicircular canal and horizontal semicircular canal benign paroxysmal positional vertigo ipsilaterally, and one case of bilateral superior semicircular canal benign paroxysmal positional vertigo. The symptom of patients got relief after repositioning sequentially. We repositioned the affected canal with strong nystagmus and vertigo at the first time. Conclusion:Multiple benign paroxysmal positional vertigo was rare and easily misdiagnosed because of complex nystagmus. We can confirm the affected canal and intensity by video nystagmography and get good prognosis after repositioning sequentially.
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Affiliation(s)
- Y M Zhang
- Department of Otorhinolaryngology, the First Affiliated Hospital of Soochow University,Suzhou,215006, China
| | - Z D Yang
- Department of Otorhinolaryngology, the First Affiliated Hospital of Soochow University,Suzhou,215006, China
| | - Y F Yu
- Department of Otorhinolaryngology, the First Affiliated Hospital of Soochow University,Suzhou,215006, China
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Liu W, Li H, Lu QB, Cui N, Yang ZD, Hu JG, Fan YD, Guo CT, Li XK, Wang YW, Liu K, Zhang XA, Yuan L, Zhao PY, Qin SL, Cao WC. Candidatus Rickettsia tarasevichiae Infection in Eastern Central China: A Case Series. Ann Intern Med 2016; 164:641-8. [PMID: 27019406 DOI: 10.7326/m15-2572] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Human infection with Candidatus Rickettsia tarasevichiae (CRT) was first reported in northeastern China in 2012. OBJECTIVE To describe the clinical spectrum and laboratory findings of patients infected with CRT in eastern central China. DESIGN Case series. SETTING A sentinel hospital for severe fever with thrombocytopenia syndrome (SFTS) in eastern central China in 2014. PARTICIPANTS Hospitalized patients with SFTS-like illness. MEASUREMENTS Molecular and serologic tests were performed to diagnose CRT infection. Data about clinical manifestations and laboratory findings were retrieved from medical records. RESULTS 56 of 733 assessed patients had CRT based on polymerase chain reaction and sequencing. All patients presented with nonspecific manifestations, including fever (96%), malaise (88%), myalgia (57%), cough (25%), and dizziness (14%). Only 2 patients had rash. Further, 16% had eschar, 29% had lymphadenopathy, 100% had gastrointestinal symptoms, 34% had neurologic symptoms, 43% had hemorrhagic manifestations, and 23% had signs of plasma leakage. Thrombocytopenia was observed in 70%, leukopenia in 59%; lymphopenia in 45%; and elevated levels of lactate dehydrogenase in 82%, aspartate aminotransferase in 70%, alanine aminotransferase in 54%, and creatinine kinase in 46%. Co-infection with SFTS virus was documented in 66% patients, and 8 of the 56 patients died. LIMITATIONS Patients with CRT were not treated for infection because they were retrospectively identified. This was not a population-based study, and the results cannot be generalized to all patients with CRT. CONCLUSION Candidatus R tarasevichiae infection should be considered in the differential diagnosis of febrile patients with SFTS-like illness in endemic areas. PRIMARY FUNDING SOURCE National Natural Science Foundation of China.
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Yang ZD, Hu JG, Lu QB, Guo CT, Cui N, Peng W, Wang LY, Qin SL, Wang HY, Zhang PH, Zhang XA, Liu W, Cao WC. The prospective evaluation of viral loads in patients with severe fever with thrombocytopenia syndrome. J Clin Virol 2016; 78:123-8. [PMID: 27062673 DOI: 10.1016/j.jcv.2016.03.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [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: 12/09/2015] [Revised: 03/14/2016] [Accepted: 03/16/2016] [Indexed: 11/19/2022]
Abstract
BACKGROUND Severe fever with thrombocytopenia syndrome (SFTS), caused by novel bunyavirus (SFTSV) is a potentially fatal disease that was first identified in China. Person to person transmission through contact with blood or body fluids was considered as an important infection route. OBJECTIVES The study is designed to investigate the longitudinal viral loads following SFTSV infection and to identify factors affecting viral shedding in SFTS patients. METHODS A prospective, observational study was performed on 208 laboratory-confirmed SFTSV infected patients in Xinyang, Henan Province. Sequential serum samples were collected on admission and during the hospitalization for quantification of SFTSV RNA by real-time RT-PCR. RESULTS The viral RNA was undetectable in 55.6% of the patients on admission into the hospital, becoming detectable in most cases until three days and attained maximum level on six days after disease onset. This was followed by an obvious decrease thereafter, but maintained detectable for over 20 days. Viral load was independently predictable of severe disease outcome throughout the hospitalization. Viral load of >10(7)copies/mL was predictable of fatal outcome. The serum levels of PLT, WBC, LDH, AST and CK were significantly associated with viral loads level. CONCLUSIONS The diagnosis of SFTSV infection based on PCR test should be performed at least three days after disease onset. Peaking viral loads were attained around six days after disease, posing a highest risk of human-to-human transmission.
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Affiliation(s)
- Zhen-Dong Yang
- The 154 Hospital, Peoples Liberation Army, Xinyang 464000, PR China
| | - Jian-Gong Hu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China
| | - Qing-Bin Lu
- School of Public Health, Peking University, Beijing 100191, PR China.
| | - Chen-Tao Guo
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China; Graduate School of Anhui Medical University, Hefei 230032, PR China
| | - Ning Cui
- The 154 Hospital, Peoples Liberation Army, Xinyang 464000, PR China
| | - Wei Peng
- The Shangcheng County People's Hospital, Shangcheng, PR China
| | - Li-Yuan Wang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China; Graduate School of Anhui Medical University, Hefei 230032, PR China
| | - Shu-Li Qin
- The 154 Hospital, Peoples Liberation Army, Xinyang 464000, PR China
| | - Hong-Yu Wang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China; Graduate School of Anhui Medical University, Hefei 230032, PR China
| | - Pan-He Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China
| | - Xiao-Ai Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China.
| | - Wu-Chun Cao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China
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Abstract
The aim of the present study is to examine the expression level of peripheral mir-21 in multiple myeloma (MM) patients and to determine its clinical significance. MM patients (30), monoclonal gammopathy of undetermined significance (MGUS) patients (14), and normal controls (20) were recruited to determine the serum level of β2-MG, IgA and IgM, IgG, λ, κ, TP, ALB, Hb, LDH, and Ca(2+). Gene expression of mir-21 was quantified by SYBR green real-time fluorescent quantitative PCR. We found that the expression level of serum mir-21 in the MM group was significantly higher than the MGUS group and the NC group (P < 0.01). According to the ISS installment, the level of mir-21, lgG, κ, and ALB in the MM group in stage I differed from that in stages II and III. The level of IgA, β2-MG in stage III was higher as compared with stage I and II (P < 0.05 and P < 0.01).The levels of mir-21, κ, (κ+λ), IgG, (IgG + IgA + IgM), and β2-MG in MM patients were positively correlated with ALB (P < 0.01). Based on the results, miR-21 plays an important role as an oncogene. Mir-21 may be important in the occurrence, development, and disease prognosis of MM.
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Affiliation(s)
- J H Wang
- The Laboratory Medicine of First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - W W Zhou
- The Laboratory Medicine of First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - B X Liu
- The Laboratory Medicine of First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - D L Man
- The Laboratory Medicine of First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Z D Yang
- The Laboratory Medicine of First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - F R Liu
- Ministry of Education Key Laboratory of Medical Cell Biology
| | - H Shang
- The Laboratory Medicine of First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
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Lu QB, Zhang SY, Cui N, Hu JG, Fan YD, Guo CT, Qin SL, Yang ZD, Wang LY, Wang HY, Zhang XA, Liu W, Cao WC. Common adverse events associated with ribavirin therapy for Severe Fever with Thrombocytopenia Syndrome. Antiviral Res 2015; 119:19-22. [PMID: 25892251 DOI: 10.1016/j.antiviral.2015.04.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 04/09/2015] [Accepted: 04/10/2015] [Indexed: 10/23/2022]
Abstract
Severe Fever with Thrombocytopenia Syndrome (SFTS) is associated with high mortality rate, for which antiviral therapy with ribavirin was recommended. Based on our previous study, no visible effect of ribavirin therapy in improving clinical outcome was observed. Here we have accumulated the sample size to 634, and by performing prospective observation on the clinical progress and laboratory parameters, we found a significantly higher incidence of anemia and hyperamylasemia in patients who received ribavirin therapy in comparison with those who received no therapy. Generalized estimating equation model disclosed a significant effect on hemoglobin reduction and blood amylase augmentation from ribavirin administration. The occurrence of anemia and hyperamylasemia was associated with SFTS patients receiving ribavirin therapy, which might be adverse event of this drug administration. The recommendation of ribavirin for treating SFTS should be applied with caution.
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Affiliation(s)
- Qing-Bin Lu
- School of Public Health, Peking University, Beijing 100191, PR China.
| | - Shu-Yan Zhang
- Department of Clinical Laboratory, General Hospital of Beijing Military Region, Beijing 100700, PR China.
| | - Ning Cui
- The 154 Hospital, People's Liberation Army, Xinyang 464000, PR China.
| | - Jian-Gong Hu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China.
| | - Ya-Di Fan
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China.
| | - Chen-Tao Guo
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China; Graduate School of Anhui Medical University, Hefei 230032, PR China.
| | - Shu-Li Qin
- The 154 Hospital, People's Liberation Army, Xinyang 464000, PR China.
| | - Zhen-Dong Yang
- The 154 Hospital, People's Liberation Army, Xinyang 464000, PR China.
| | - Li-Yuan Wang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China; Graduate School of Anhui Medical University, Hefei 230032, PR China.
| | - Hong-Yu Wang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China; Graduate School of Anhui Medical University, Hefei 230032, PR China.
| | - Xiao-Ai Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China.
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China.
| | - Wu-Chun Cao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China.
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Cui N, Liu R, Lu QB, Wang LY, Qin SL, Yang ZD, Zhuang L, Liu K, Li H, Zhang XA, Hu JG, Wang JY, Liu W, Cao WC. Severe fever with thrombocytopenia syndrome bunyavirus-related human encephalitis. J Infect 2014; 70:52-9. [PMID: 25135231 DOI: 10.1016/j.jinf.2014.08.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 08/03/2014] [Accepted: 08/05/2014] [Indexed: 11/29/2022]
Abstract
BACKGROUND Severe Fever with Thrombocytopenia Syndrome (SFTS) is an emerging infectious disease caused by a novel bunyavirus. Until recently, SFTSV-associated encephalitis remained largely uninvestigated. METHODS We made clinical investigation on SFTS patients who experienced encephalitis in one reference hospital in Henan Province from 2011 to 2013 to identify the risk factors for encephalitis occurrence and their fatal outcome development. RESULTS Altogether 538 SFTS patients were included and 19.1% of them developed encephalitis. Fatal outcome occurred in 44.7% of the encephalitis patients. The risk factors associated with encephalitis occurrence and death included older age, longer delay between disease onset and hospital admission, pre-existing diabetes and myalgias, as well as the laboratory evaluations of higher virus load on admission, decreased WBC, PLT count, lymphocyte percentage and ALB, elevated neutrophils percentage, AST, ALT, LDH, CK, ALP, GGT, BUN and CREA. These parameters could be used as potential predictors referring to severe SFTS cases. One SFTSV strain was isolated from cerebrospinal fluid sample. Cytokine/chemokine assay revealed that blood EOTAXIN, IFN-γ, IL-15, IL-6, IP-10, TNF-α were remarkably elevated before clinical deterioration in the confirmed encephalitis patient. CONCLUSIONS SFTSV is capable of infecting the central nervous system and screening for SFTSV in encephalitis of unknown reason should be performed in SFTS endemic regions. The encephalitis occurrence and fatal outcome could be potentially predicted by clinical and laboratory evaluations.
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Affiliation(s)
- Ning Cui
- The 154 Hospital, People's Liberation Army, Xinyang 464000, PR China
| | - Rong Liu
- School of Public Health, Peking University, Beijing 100191, PR China; State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China
| | - Qing-Bin Lu
- School of Public Health, Peking University, Beijing 100191, PR China
| | - Li-Yuan Wang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China; Graduate School of Anhui Medical University, Hefei 230032, PR China
| | - Shu-Li Qin
- The 154 Hospital, People's Liberation Army, Xinyang 464000, PR China
| | - Zhen-Dong Yang
- The 154 Hospital, People's Liberation Army, Xinyang 464000, PR China
| | - Lu Zhuang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China
| | - Kun Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China
| | - Hao Li
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China
| | - Xiao-Ai Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China
| | - Jian-Gong Hu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China
| | - Jing-Yu Wang
- School of Public Health, Peking University, Beijing 100191, PR China
| | - Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China.
| | - Wu-Chun Cao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, PR China.
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Cui N, Bao XL, Yang ZD, Lu QB, Hu CY, Wang LY, Wang BJ, Wang HY, Liu K, Yuan C, Fan XJ, Wang Z, Zhang L, Zhang XA, Hu LP, Liu W, Cao WC. Clinical progression and predictors of death in patients with severe fever with thrombocytopenia syndrome in China. J Clin Virol 2014; 59:12-7. [DOI: 10.1016/j.jcv.2013.10.024] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Revised: 10/14/2013] [Accepted: 10/21/2013] [Indexed: 10/26/2022]
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Ji XR, Yang ZD, Yang XH, Liu DD, Ni HJ, Li M. Change of selenium in environment and risk of adolescent idiopathic scoliosis: a retrospective cohort study. Eur Rev Med Pharmacol Sci 2013; 17:2499-2503. [PMID: 24089230] [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: 06/02/2023]
Abstract
OBJECTIVES Scoliosis is the disease which has a long history over one century. However, the pathogenesis remains unclear at present. To demonstrate the effect of different selenium content in environment on the morbidity of adolescent idiopathic scoliosis (AIS). METHODS Retrospective cohort study (follow-up from 1997 to 2009): compare the difference morbidity between high selenium group and the normal selenium group of AIS. PATIENTS 9998 cases from three areas in China were participated in this study. There is different selenium content in these three areas. RESULTS High selenium levels were significant associated with the AIS morbidity. While low selenium level had no significant correlation with the AIS morbidity. CONCLUSIONS This study confirmed that high selenium content in the environment was one of risk factors for idiopathic scoliosis. We speculated that the excessive growth of the spine and the spinal cord asynchronous growth effect were key factors that high selenium content in the environment leads to scoliosis.
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Affiliation(s)
- X R Ji
- Department of Orthopedics, Changhai Hospital, Second Military Medical University, Shanghai, China.
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Liu W, Lu QB, Cui N, Li H, Wang LY, Liu K, Yang ZD, Wang BJ, Wang HY, Zhang YY, Zhuang L, Hu CY, Yuan C, Fan XJ, Wang Z, Zhang L, Zhang XA, Walker DH, Cao WC. Case-fatality ratio and effectiveness of ribavirin therapy among hospitalized patients in china who had severe fever with thrombocytopenia syndrome. Clin Infect Dis 2013; 57:1292-9. [PMID: 23965284 DOI: 10.1093/cid/cit530] [Citation(s) in RCA: 147] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND The wide distribution and high case-fatality ratio of severe fever with thrombocytopenia syndrome (SFTS) have made it a significant public health problem. This study was designed to identify the predictors of fatal outcomes and to evaluate the effectiveness of antiviral therapy in treating SFTS virus (SFTSV)-infected patients. METHODS A cross-sectional study was performed in a general hospital located in Xinyang city, whereas the largest number of patients with SFTS in China were treated during 2011-2012. The primary outcome for the treatment effect analysis was death. Other outcomes included sequential platelet levels and viral loads observed throughout the hospitalization and the interval between the initiation of ribavirin therapy and the return of the platelet count to a normal level. RESULTS A total of 311 SFTSV-infected patients were included in the study. The most frequent clinical presentations were fever, weakness, myalgia, and gastrointestinal symptoms. Each patient had thrombocytopenia, leukopenia, or both. The case-fatality ratio (CFR) was 17.4% (95% confidence interval [CI], 13.1%-21.6%). Older age (odds ratio [OR], 1.061; 95% CI, 1.023-1.099; P = .001), decreased level of consciousness (OR, 5.397; 95% CI, 2.660-10.948; P < .001), and elevated levels of lactate dehydrogenase (>1200 U/L; OR, 2.620; 95% CI, 1.073-6.399; P = .035) and creatine kinase (>800 U/L; OR, 2.328; 95% CI, 1.129-4.800; P = .022) were significantly associated with fatal outcome. The CFRs were similar between patients who received ribavirin and those who did not. Ribavirin treatment showed no significant effect on either platelet counts or viral loads during hospitalization of patients with fatal or nonfatal cases. CONCLUSIONS These findings can improve knowledge about the characteristics of patients with fatal outcomes and the use of antiviral drug for SFTS.
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Affiliation(s)
- Wei Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology
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Niu CC, Zhao C, Yang ZD, Zhang XL, Wu WR, Pan J, Zhao C, Li ZQ, Ding W, Yang Z, Si WK. Downregulation of γ-catenin inhibits CML cell growth and potentiates the response of CML cells to imatinib through β-catenin inhibition. Int J Mol Med 2012; 31:453-8. [PMID: 23233089 DOI: 10.3892/ijmm.2012.1207] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2012] [Accepted: 11/09/2012] [Indexed: 11/05/2022] Open
Abstract
γ-catenin plays different roles in different types of tumors, and its role in chronic myeloid leukemia (CML) cells has yet to be identified. In our study, two CML cell lines (K562, KU812) had higher γ-catenin expression levels compared to five types of BCR-ABL-negative leukemia cells. Knockdown of the expression of BCR-ABL resulted in downregulation of γ-catenin. Furthermore, downregulation of γ-catenin by siRNA inhibited the proliferation and colony formation of CML cells and the expression of the c-Myc and cyclin D1 genes; downregulation of γ-catenin also potentiated the effects of imatinib (inhibiting CML cell proliferation and inducing apoptosis) and suppressed the anti-apoptotic genes Bcl-xL and survivin. We also showed that downregulation of γ-catenin suppressed the phosphorylation of STAT5, promoted the phosphorylation of β-catenin and reduced the translocation of β-catenin into the nucleus, although there were no effects on the total level of β-catenin expression in the whole cells. Furthermore, downregulation of γ-catenin was found to promote glycogen synthase kinase-3β (GSK3β) and inhibit its phosphorylation. Collectively, our results suggest that γ-catenin is an oncogene protein in CML that can be regulated by BCR-ABL and that suppression of γ-catenin inhibits CML cell growth and potentiates the effects of imatinib on CML cells through inhibition of the activation of STAT5 and suppression of β-catenin by activating GSK3β.
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Affiliation(s)
- Chang-Chun Niu
- Department of Clinical Hematology, The Third Military Medical University, Chongqing 400038, P.R. China
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Zhang WM, Liu J, Sun ZX, Fan BQ, Yang ZD, Forsling W. Synthesis of mesoporous silica by a surface charge reversal route. J Colloid Interface Sci 2010; 349:473-6. [PMID: 20580376 DOI: 10.1016/j.jcis.2010.05.069] [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: 01/28/2010] [Revised: 05/15/2010] [Accepted: 05/19/2010] [Indexed: 11/26/2022]
Abstract
Pore size adjustable mesoporous silica was synthesized by adsorption of varying amounts of sodium dodecyl benzenesulfonate at the surface of silica activated by zinc ion via a novel surface charge reversal route. The pore size and volume can be adjusted from 5.9 to 13.76 nm and 0.88 to 1.08 cm(3) g(-1), respectively, with increasing the SDBS concentration from 0.77 to 3.08 mmol L(-1). Adsorption of Zn(2+) as a function of pH and N(2) adsorption/desorption isotherms demonstrated that the metal ions such as Zn(2+) could be readily removed with dilute nitric acid without apparent collapse of the pore structure at the proper range of SDBS concentration.
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Affiliation(s)
- Wei-Min Zhang
- School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
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