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Feng K, Bendiwhobel Ushie B, Zhang H, Li S, Deng F, Wang H, Ning YJ. Pathogenesis and virulence of Heartland virus. Virulence 2024; 15:2348252. [PMID: 38712703 PMCID: PMC11085952 DOI: 10.1080/21505594.2024.2348252] [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: 10/15/2023] [Accepted: 04/23/2024] [Indexed: 05/08/2024] Open
Abstract
Heartland virus (HRTV), an emerging tick-borne pathogenic bunyavirus, has been a concern since 2012, with an increasing incidence, expanding geographical distribution, and high pathogenicity in the United States. Infection from HRTV results in fever, thrombocytopenia, and leucopenia in humans, and in some cases, symptoms can progress to severe outcomes, including haemorrhagic disease, multi-organ failure, and even death. Currently, no vaccines or antiviral drugs are available for treatment of the HRTV disease. Moreover, little is known about HRTV-host interactions, viral replication mechanisms, pathogenesis and virulence, further hampering the development of vaccines and antiviral interventions. Here, we aimed to provide a brief review of HRTV epidemiology, molecular biology, pathogenesis and virulence on the basis of published article data to better understand this virus and provide clues for further study.
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Affiliation(s)
- Kuan Feng
- Hubei Jiangxia Laboratory, Wuhan, China
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- Key Laboratory of Virology and Biosafety and Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Benjamin Bendiwhobel Ushie
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Haiyan Zhang
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- Key Laboratory of Virology and Biosafety and Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Shu Li
- Department of Clinical Laboratory, Guangzhou Women & Children’s Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Fei Deng
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- Key Laboratory of Virology and Biosafety and Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Hualin Wang
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- Key Laboratory of Virology and Biosafety and Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Yun-Jia Ning
- Hubei Jiangxia Laboratory, Wuhan, China
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- Key Laboratory of Virology and Biosafety and Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
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2
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Dai S, Min YQ, Li Q, Feng K, Jiang Z, Wang Z, Zhang C, Ren F, Fang Y, Zhang J, Zhu Q, Wang M, Wang H, Deng F, Ning YJ. Interactome profiling of Crimean-Congo hemorrhagic fever virus glycoproteins. Nat Commun 2023; 14:7365. [PMID: 37963884 PMCID: PMC10646030 DOI: 10.1038/s41467-023-43206-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 11/02/2023] [Indexed: 11/16/2023] Open
Abstract
Crimean-Congo hemorrhagic fever virus (CCHFV) is a biosafety level-4 pathogen requiring urgent research and development efforts. The glycoproteins of CCHFV, Gn and Gc, are considered to play multiple roles in the viral life cycle by interactions with host cells; however, these interactions remain largely unclear to date. Here, we analyzed the cellular interactomes of CCHFV glycoproteins and identified 45 host proteins as high-confidence Gn/Gc interactors. These host molecules are involved in multiple cellular biological processes potentially associated with the physiological actions of the viral glycoproteins. Then, we elucidated the role of a representative cellular protein, HAX1. HAX1 interacts with Gn by its C-terminus, while its N-terminal region leads to mitochondrial localization. By the strong interaction, HAX1 sequestrates Gn to mitochondria, thus depriving Gn of its normal Golgi localization that is required for functional glycoprotein-mediated progeny virion packaging. Consistently, the inhibitory activity of HAX1 against viral packaging and hence propagation was further elucidated in the contexts of pseudotyped and authentic CCHFV infections in cellular and animal models. Together, the findings provide a systematic CCHFV Gn/Gc-cell protein-protein interaction map, but also unravel a HAX1/mitochondrion-associated host antiviral mechanism, which may facilitate further studies on CCHFV biology and therapeutic approaches.
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Affiliation(s)
- Shiyu Dai
- Key Laboratory of Virology and Biosafety and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China
- Department of Cardiovascular Surgery of the First Affiliated Hospital & Institute for Cardiovascular Science, Suzhou Medical College, Soochow University, Suzhou, 215006, China
| | - Yuan-Qin Min
- Key Laboratory of Virology and Biosafety and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China
- State Key Laboratory of Virology and Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071/430207, China
| | - Qi Li
- Key Laboratory of Virology and Biosafety and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China
- University of Chinese Academy of Sciences, 101408, Beijing, China
| | - Kuan Feng
- Key Laboratory of Virology and Biosafety and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China
- State Key Laboratory of Virology and Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071/430207, China
| | - Zhenyu Jiang
- Key Laboratory of Virology and Biosafety and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China
- University of Chinese Academy of Sciences, 101408, Beijing, China
| | - Zhiying Wang
- Key Laboratory of Virology and Biosafety and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China
| | - Cunhuan Zhang
- Key Laboratory of Virology and Biosafety and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China
| | - Fuli Ren
- Key Laboratory of Virology and Biosafety and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China
| | - Yaohui Fang
- Key Laboratory of Virology and Biosafety and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China
- University of Chinese Academy of Sciences, 101408, Beijing, China
| | - Jingyuan Zhang
- Key Laboratory of Virology and Biosafety and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China
- University of Chinese Academy of Sciences, 101408, Beijing, China
| | - Qiong Zhu
- Key Laboratory of Virology and Biosafety and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China
- State Key Laboratory of Virology and Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071/430207, China
| | - Manli Wang
- Key Laboratory of Virology and Biosafety and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China
- State Key Laboratory of Virology and Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071/430207, China
| | - Hualin Wang
- Key Laboratory of Virology and Biosafety and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China.
- State Key Laboratory of Virology and Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071/430207, China.
| | - Fei Deng
- Key Laboratory of Virology and Biosafety and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China.
- State Key Laboratory of Virology and Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071/430207, China.
| | - Yun-Jia Ning
- Key Laboratory of Virology and Biosafety and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China.
- State Key Laboratory of Virology and Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071/430207, China.
- Hubei Jiangxia Laboratory, Wuhan, 430200, China.
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3
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Brussow J, Feng K, Thiam F, Phogat S, Osei ET. Epithelial-fibroblast interactions in IPF: Lessons from in vitro co-culture studies. Differentiation 2023; 134:11-19. [PMID: 37738701 DOI: 10.1016/j.diff.2023.09.001] [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: 07/03/2023] [Revised: 08/19/2023] [Accepted: 09/10/2023] [Indexed: 09/24/2023]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive interstitial disease that is characterized by increased cellular proliferation and differentiation together with excessive extracellular matrix (ECM) deposition leading to buildup of scar tissue (fibrosis) and remodeling in the lungs. The activated and differentiated (myo)fibroblasts are one of the main sources of tissue remodeling in IPF and a crucial mechanism known to contribute to this feature is an aberrant crosstalk between pulmonary fibroblasts and the abnormal or injured pulmonary epithelium. This epithelial-fibroblast interaction mimics the temporal, spatial and cell-type specific crosstalk between the endoderm and mesoderm in the so-called epithelial-mesenchymal trophic unit (EMTU) during lung development that is proposed to be activated in healthy lung repair and dysregulated in various lung diseases including IPF. To study the dysregulated lung EMTU in IPF, various complex in vitro models have been established. Hence, in this review, we will provide a summary of studies that have used complex (3-dimensional) in vitro co-culture, and organoid models to assess how abnormal epithelial-fibroblast interactions in lung EMTU contribute to crucial features of the IPF including defective cellular differentiation, proliferation and migration as well as increased ECM deposition.
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Affiliation(s)
- J Brussow
- Department of Biology, Okanagan Campus, University of British Columbia, Kelowna, BC, Canada
| | - K Feng
- Department of Biology, Okanagan Campus, University of British Columbia, Kelowna, BC, Canada
| | - F Thiam
- Department of Biology, Okanagan Campus, University of British Columbia, Kelowna, BC, Canada
| | - S Phogat
- Department of Biology, Okanagan Campus, University of British Columbia, Kelowna, BC, Canada
| | - E T Osei
- Department of Biology, Okanagan Campus, University of British Columbia, Kelowna, BC, Canada; Centre for Heart Lung Innovation, St. Paul's Hospital, Vancouver, BC, V6Z 1Y6, Canada.
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4
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Min YQ, Huang M, Feng K, Jia Y, Sun X, Ning YJ. A New Cellular Interactome of SARS-CoV-2 Nucleocapsid Protein and Its Biological Implications. Mol Cell Proteomics 2023; 22:100579. [PMID: 37211047 PMCID: PMC10198743 DOI: 10.1016/j.mcpro.2023.100579] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 05/13/2023] [Accepted: 05/16/2023] [Indexed: 05/23/2023] Open
Abstract
There is still much to uncover regarding the molecular details of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. As the most abundant protein, coronavirus nucleocapsid (N) protein encapsidates viral RNAs, serving as the structural component of ribonucleoprotein and virion, and participates in transcription, replication, and host regulations. Virus-host interaction might give clues to better understand how the virus affects or is affected by its host during infection and identify promising therapeutic candidates. Considering the critical roles of N, we here established a new cellular interactome of SARS-CoV-2 N by using a high-specific affinity purification (S-pulldown) assay coupled with quantitative mass spectrometry and immunoblotting validations, uncovering many N-interacting host proteins unreported previously. Bioinformatics analysis revealed that these host factors are mainly involved in translation regulations, viral transcription, RNA processes, stress responses, protein folding and modification, and inflammatory/immune signaling pathways, in line with the supposed actions of N in viral infection. Existing pharmacological cellular targets and the directing drugs were then mined, generating a drug-host protein network. Accordingly, we experimentally identified several small-molecule compounds as novel inhibitors against SARS-CoV-2 replication. Furthermore, a newly identified host factor, DDX1, was verified to interact and colocalize with N mainly by binding to the N-terminal domain of the viral protein. Importantly, loss/gain/reconstitution-of-function experiments showed that DDX1 acts as a potent anti-SARS-CoV-2 host factor, inhibiting the viral replication and protein expression. The N-targeting and anti-SARS-CoV-2 abilities of DDX1 are consistently independent of its ATPase/helicase activity. Further mechanism studies revealed that DDX1 impedes multiple activities of N, including the N-N interaction, N oligomerization, and N-viral RNA binding, thus likely inhibiting viral propagation. These data provide new clues to better depiction of the N-cell interactions and SARS-CoV-2 infection and may help inform the development of new therapeutic candidates.
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Affiliation(s)
- Yuan-Qin Min
- Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China; Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Mengzhuo Huang
- Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China; University of Chinese Academy of Sciences, Beijing, China; State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Kuan Feng
- Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China; Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China; State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Yajie Jia
- Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Xiulian Sun
- Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China; Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China.
| | - Yun-Jia Ning
- Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China; Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China; State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China; Hubei Jiangxia Laboratory, Wuhan, China.
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5
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Feng K, Zhang HJ, Min YQ, Zhou M, Deng F, Wang HL, Li PQ, Ning YJ. SARS-CoV-2 NSP13 interacts with host IRF3, blocking antiviral immune responses. J Med Virol 2023; 95:e28881. [PMID: 37314155 DOI: 10.1002/jmv.28881] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 05/19/2023] [Accepted: 06/05/2023] [Indexed: 06/15/2023]
Abstract
Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), poses an unprecedented threat to human health since late 2019. Notably, the progression of the disease is associated with impaired antiviral interferon (IFN) responses. Although multiple viral proteins were identified as potential IFN antagonists, the underlying molecular mechanisms remain to be fully elucidated. In this study, we firstly demonstrate that SARS-CoV-2 NSP13 protein robustly antagonizes IFN response induced by the constitutively active form of transcription factor IRF3 (IRF3/5D). This induction of IFN response by IRF3/5D is independent of the upstream kinase, TBK1, a previously reported NSP13 target, thus indicating that NSP13 can act at the level of IRF3 to antagonize IFN production. Consistently, NSP13 exhibits a specific, TBK1-independent interaction with IRF3, which, moreover, is much stronger than that of NSP13 with TBK1. Furthermore, the NSP13-IRF3 interaction was shown to occur between the NSP13 1B domain and IRF3 IRF association domain (IAD). In agreement with the strong targeting of IRF3 by NSP13, we then found that NSP13 blocks IRF3-directed signal transduction and antiviral gene expression, counteracting IRF3-driven anti-SARS-CoV-2 activity. These data suggest that IRF3 is likely to be a major target of NSP13 in antagonizing antiviral IFN responses and provide new insights into the SARS-CoV-2-host interactions that lead to viral immune evasion.
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Affiliation(s)
- Kuan Feng
- Department of Pediatric Emergency, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Hui-Jiao Zhang
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yuan-Qin Min
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Min Zhou
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Fei Deng
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Hua-Lin Wang
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Pei-Qing Li
- Department of Pediatric Emergency, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Yun-Jia Ning
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
- Hubei Jiangxia Laboratory, Wuhan, China
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Mo Q, Feng K, Dai S, Wu Q, Zhang Z, Ali A, Deng F, Wang H, Ning YJ. Transcriptome profiling highlights regulated biological processes and type III interferon antiviral responses upon Crimean-Congo hemorrhagic fever virus infection. Virol Sin 2023; 38:34-46. [PMID: 36075566 PMCID: PMC10006212 DOI: 10.1016/j.virs.2022.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Accepted: 08/12/2022] [Indexed: 11/17/2022] Open
Abstract
Crimean-Congo hemorrhagic fever virus (CCHFV) is a biosafety level-4 (BSL-4) pathogen that causes Crimean-Congo hemorrhagic fever (CCHF) characterized by hemorrhagic manifestation, multiple organ failure and high mortality rate, posing great threat to public health. Despite the recently increasing research efforts on CCHFV, host cell responses associated with CCHFV infection remain to be further characterized. Here, to better understand the cellular response to CCHFV infection, we performed a transcriptomic analysis in human kidney HEK293 cells by high-throughput RNA sequencing (RNA-seq) technology. In total, 496 differentially expressed genes (DEGs), including 361 up-regulated and 135 down-regulated genes, were identified in CCHFV-infected cells. These regulated genes were mainly involved in host processes including defense response to virus, response to stress, regulation of viral process, immune response, metabolism, stimulus, apoptosis and protein catabolic process. Therein, a significant up-regulation of type III interferon (IFN) signaling pathway as well as endoplasmic reticulum (ER) stress response was especially remarkable. Subsequently, representative DEGs from these processes were well validated by RT-qPCR, confirming the RNA-seq results and the typical regulation of IFN responses and ER stress by CCHFV. Furthermore, we demonstrate that not only type I but also type III IFNs (even at low dosages) have substantial anti-CCHFV activities. Collectively, the data may provide new and comprehensive insights into the virus-host interactions and particularly highlights the potential role of type III IFNs in restricting CCHFV, which may help inform further mechanistic delineation of the viral infection and development of anti-CCHFV strategies.
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Affiliation(s)
- Qiong Mo
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China; University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Kuan Feng
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China
| | - Shiyu Dai
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China; University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Qiaoli Wu
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China
| | - Zhong Zhang
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China
| | - Ashaq Ali
- University of Chinese Academy of Sciences, Beijing, 101408, China; Centre of Excellence in Science and Applied Technologies, Islamabad, 45320, Pakistan
| | - Fei Deng
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China; Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071/430207, China.
| | - Hualin Wang
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China; Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071/430207, China.
| | - Yun-Jia Ning
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071/430207, China; Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071/430207, China.
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7
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Thiam F, Yazeedi SA, Feng K, Phogat S, Demirsoy E, Brussow J, Abokor FA, Osei ET. Understanding fibroblast-immune cell interactions via co-culture models and their role in asthma pathogenesis. Front Immunol 2023; 14:1128023. [PMID: 36911735 PMCID: PMC9996007 DOI: 10.3389/fimmu.2023.1128023] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [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: 12/20/2022] [Accepted: 02/10/2023] [Indexed: 02/25/2023] Open
Abstract
Asthma is a chronic lung disease involving airway inflammation and fibrosis. Fibroblasts are the main effector cells important for lung tissue production which becomes abnormal in asthmatics and is one of the main contributors to airway fibrosis. Although fibroblasts were traditionally viewed solely as structural cells, they have been discovered to be highly active, and involved in lung inflammatory and fibrotic processes in asthma. In line with this, using 2D and 3D in vitro co-culture models, a complex interaction between lung fibroblasts and various immune cells important for the pathogenesis of asthma have been recently uncovered. Hence, in this review, we provide the first-ever summary of various studies that used 2D and 3D in vitro co-culture models to assess the nature of aberrant immune cell-fibroblast interactions and their contributions to chronic inflammation and fibrotic mechanisms in asthma pathogenesis.
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Affiliation(s)
- F Thiam
- Department of Biology, University of British Columbia, Kelowna, BC, Canada
| | - S Al Yazeedi
- Department of Biology, University of British Columbia, Kelowna, BC, Canada
| | - K Feng
- Department of Biology, University of British Columbia, Kelowna, BC, Canada
| | - S Phogat
- Department of Biology, University of British Columbia, Kelowna, BC, Canada
| | - E Demirsoy
- Department of Biology, University of British Columbia, Kelowna, BC, Canada
| | - J Brussow
- Department of Biology, University of British Columbia, Kelowna, BC, Canada
| | - F A Abokor
- Department of Biology, University of British Columbia, Kelowna, BC, Canada
| | - E T Osei
- Department of Biology, University of British Columbia, Kelowna, BC, Canada.,Centre for Heart Lung Innovation, St. Paul's Hospital, Vancouver, BC, Canada
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8
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Feng K, Zhang H, Jiang Z, Zhou M, Min YQ, Deng F, Li P, Wang H, Ning YJ. SFTS bunyavirus NSs protein sequestrates mTOR into inclusion bodies and deregulates mTOR-ULK1 signaling, provoking pro-viral autophagy. J Med Virol 2023; 95:e28371. [PMID: 36458534 DOI: 10.1002/jmv.28371] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 10/27/2022] [Accepted: 11/20/2022] [Indexed: 12/04/2022]
Abstract
Autophagy is emerging as a critical player in host defense against diverse infections, in addition to its conserved function to maintain cellular homeostasis. Strikingly, some pathogens have evolved strategies to evade, subvert or exploit different steps of the autophagy pathway for their lifecycles. Here, we present a new viral mechanism of manipulating autophagy for its own benefit with severe fever with thrombocytopenia syndrome bunyavirus (SFTSV, an emerging high-pathogenic virus) as a model. SFTSV infection triggers autophagy, leading to complete autophagic flux. Mechanistically, we show that the nonstructural protein of SFTSV (NSs) interacts with mTOR, the pivotal regulator of autophagy, by targeting its kinase domain and captures mTOR into viral inclusion bodies (IBs) induced by NSs itself. Furthermore, NSsimpairs mTOR-mediated phosphorylation of unc-51-like kinase 1 (ULK1) at Ser757, disrupting the inhibitory effect of mTOR on ULK1 activity and thus contributing to autophagy induction. Pharmacologic treatment and Beclin-1 knockout experimental results establish that, in turn, autophagy enhances SFTSV infection and propagation. Moreover, the minigenome reporter system reveals that SFTSV ribonucleoprotein (the transcription and replication machinery) activity can be bolstered by autophagy. Additionally, we found that the NSs proteins of SFTSV-related bunyaviruses have a conserved function of targeting mTOR. Taken together, we unravel a viral strategy of inducing pro-viral autophagy by interacting with mTOR, sequestering mTOR into IBs and hence provoking the downstream ULK1 pathway, which presents a new paradigm for viral manipulation of autophagy and may help inform future development of specific antiviral therapies against SFTSV and related pathogens.
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Affiliation(s)
- Kuan Feng
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- Department of Pediatric Emergency, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Huijiao Zhang
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Zhenyu Jiang
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Min Zhou
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Yuan-Qin Min
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Fei Deng
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Peiqing Li
- Department of Pediatric Emergency, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, China
| | - Hualin Wang
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
| | - Yun-Jia Ning
- State Key Laboratory of Virology and National Virus Resource Center, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
- Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, China
- Hubei Jiangxia Laboratory, Wuhan, China
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Buckley DN, Gooden G, Feng K, Enk J, Salhia B. Targeted DNA methylation from cell-free DNA using hybridization probe capture. NAR Genom Bioinform 2022; 4:lqac099. [PMID: 36601578 PMCID: PMC9803870 DOI: 10.1093/nargab/lqac099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 11/28/2022] [Accepted: 12/09/2022] [Indexed: 01/01/2023] Open
Abstract
Cell-free (cf)DNA signatures are quickly becoming the target of choice for non-invasive screening, diagnosis, treatment and monitoring of human tumors. DNA methylation changes occur early in tumorigenesis and are widespread, making cfDNA methylation an attractive cancer biomarker. Already a proven technology for targeted genome sequencing, hybridization probe capture is emerging as a method for high-throughput targeted methylation profiling suitable to liquid biopsy samples. However, to date there are no reports describing the performance of this approach in terms of reproducibility, scalability, and accuracy. In the current study we performed hybridization probe capture using the myBaits® Custom Methyl-seq kit on 172 plasma samples and standards to evaluate its performance on cfDNA methylation analysis. The myBaits® assay showed high target recovery (>90%), demonstrated excellent reproducibility between captures (R 2 = 0.92 on average), and was unaffected by increasing the number of targets in a capture. Finally, myBaits® accurately replicated 'gold standard' beta values from WGBS (average R 2 = 0.79). The results of this study show that custom targeted methylation sequencing with myBaits® offers a cost-effective, reliable platform to profile DNA methylation at a set of discrete custom regions, with potential applicability to liquid biopsies for cancer monitoring.
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Affiliation(s)
- David N Buckley
- Department of Translational Genomics, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Gerald Gooden
- Department of Translational Genomics, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Kuan Feng
- Daicel Arbor Biosciences, Ann Arbor, MI, USA
| | - Jacob Enk
- Daicel Arbor Biosciences, Ann Arbor, MI, USA
| | - Bodour Salhia
- Department of Translational Genomics, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
- Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA, USA
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Oladehin O, Feng K, Haddock JW, Galeano-Cabral J, Wei K, Xin Y, Latturner SE, Baumbach RE. Mn substitution in the topological metal Zr 2Te 2P. J Phys Condens Matter 2022; 34:485501. [PMID: 36195084 DOI: 10.1088/1361-648x/ac9770] [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] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
Results are reported for Mn intercalated Zr2Te2P, where x-ray diffraction , energy dispersive spectroscopy, and transmission electron microscopy measurements reveal that the van der Waals bonded Te-Te layers are partially filled by Zr and Mn ions. This leads to the chemical formulas Zr0.07Zr2Te2P and Mn0.06Zr0.03Zr2Te2P for the parent and substituted compounds, respectively. The impact of the Mn ions is seen in the anisotropic magnetic susceptibility, where Curie-Weiss fits to the data indicate that the Mn ions are in the divalent state. Heat capacity and electrical transport measurements reveal metallic behavior, but the electronic coefficient of the heat capacity (γMn≈ 36.6 mJ (mol·K2)-1) is enhanced by comparison to that of the parent compound. Magnetic ordering is seen atTM≈4 K, where heat capacity measurements additionally show that the phase transition is broad, likely due to the disordered Mn distribution. This transition also strongly reduces the electronic scattering seen in the normalized electrical resistance. These results show that Mn substitution simultaneously introduces magnetic interactions and tunes the electronic state, which improves prospects for inducing novel behavior in Zr2Te2P and the broader family of ternary tetradymites.
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Affiliation(s)
- O Oladehin
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, United States of America
- Department of Physics, Florida State University, Tallahassee, FL 32306, United States of America
| | - K Feng
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, United States of America
- Department of Physics, Florida State University, Tallahassee, FL 32306, United States of America
| | - J W Haddock
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306, United States of America
| | - J Galeano-Cabral
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, United States of America
- Department of Mechanical Engineering, Florida State University, Tallahassee, FL 32306, United States of America
| | - K Wei
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, United States of America
| | - Y Xin
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, United States of America
| | - S E Latturner
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, FL 32306, United States of America
| | - R E Baumbach
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, United States of America
- Department of Physics, Florida State University, Tallahassee, FL 32306, United States of America
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Etemadi R, Zihayat M, Feng K, Adelman J, Bagheri E. Embedding-based Team Formation for Community Question Answering. Inf Sci (N Y) 2022. [DOI: 10.1016/j.ins.2022.09.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Liu HY, Li J, Huang DR, Feng K, Liu JH, He QN, Guo KY, Ding GY, Lou Y, Wang Y. [Early warning of low maternal unconjugated estriol level by prenatal screening for fetus with X-linked ichthyosis]. Zhonghua Fu Chan Ke Za Zhi 2022; 57:407-412. [PMID: 35775247 DOI: 10.3760/cma.j.cn112141-20220125-00043] [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: 06/15/2023]
Abstract
Objective: To analyze the characteristic of prenatal serological screening in fetus with X-linked ichthyosis (XLI), and to explore the relationship between unconjugated estriol (uE3) levels and XLI. Methods: A total of 56 fetuses with Xp22.31 microdeletion indicated by prenatal diagnosis and 70 fetuses diagnosed with trisomy 21 and 26 fetuses with trisomy 18 in Henan Provincial People's Hospital and Affiliated Hospital of Weifang Medical College from September 2016 to June 2021 were collected. The multiples of median (MoM) values of uE3, alpha-fetoprotein (AFP), and human chorionic gonadotropin (hCG) during the second trimester of pregnancy were retrospectively analyzed. Prenatal diagnosis was made by amniotic fluid karyotype analysis and genome copy number variant analysis, parent genetic verification and pathogenicity analysis were performed, and maternal and infant outcomes were followed up. Results: Of 56 pregnant women with fetal Xp22.31 microdeletion, 43 underwent serological screening during the second trimester of pregnancy, of which 42 were abnormal (39 male fetuses and 3 female fetuses). The median uE3 MoM value of 39 male fetuses [0.06 (0.00-0.21)] was lower than the normal value and significantly lower than that of fetuses with trisomy 21 [0.71 (0.26-1.27)] and fetuses with trisomy 18 [0.36 (0.15-0.84)], the difference was statistically significant (Z=99.96, P<0.001). While the MoM values of AFP and hCG were all within the normal range. Among the 56 fetuses carrying Xp22.31 microdeletion, 45 were male fetuses and 11 were female fetuses, and the deletion fragments all involved STS gene. Eighty-nine percent (50/56) were inherited from mother (49 cases) or father (1 case), and 11% (6/56) were de novo mutations. Follow-up showed 48 live births (38 males and 10 females) and 8 chose to terminate pregnancy (7 males and 1 female). Among the 38 male newborns, 37 presented with scaly skin changes from 1 to 3 months of age, and one had no clinical manifestations until 4 months after birth. Ten female newborns had no obvious clinical manifestations. Conclusions: The decrease levels of uE3 MoM on maternal serological screening is closely related to the higher risk of XLI in male fetuses. For pregnant women with low uE3 in serological screening or with family history of ichthyosis, in addition to chromosomal karyotype analysis, joint detection of genomic copy number variant analysis should be recommended.
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Affiliation(s)
- H Y Liu
- Department of Medical Genetics Center, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - J Li
- Department of Medical Genetics Center, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - D R Huang
- Department of Medical Genetics Center, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - K Feng
- Department of Medical Genetics and Prenatal Diagnosis, Affiliated Hospital of Weifang Medical University, Weifang 261000, China
| | - J H Liu
- Department of Obstetrics and Gynecology, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - Q N He
- Department of Medical Genetics Center, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - K Y Guo
- Department of Medical Genetics Center, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - G Y Ding
- Department of Medical Genetics Center, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - Y Lou
- Department of Medical Genetics Center, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China
| | - Yue Wang
- Department of Obstetrics and Gynecology, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, China
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Quan W, Feng K, Lu X, Lin G, Liu X, Xiang M, Gu G. A State Recognition Method of Isolation Switch in Traction Substation Based on Key Components Detection and Geometric Ranging. Neural Process Lett 2022. [DOI: 10.1007/s11063-022-10874-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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14
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Yu XM, Feng K, Ren QG, Ji H, Li X, Han CJ, Pan XL, Yuan Y. [Nasal seromucinous hamartoma: a case report]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022; 57:743-745. [PMID: 35725321 DOI: 10.3760/cma.j.cn115330-20210722-00477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Affiliation(s)
- X M Yu
- NHC Key Laboratory of Otorhinolaryngology (Shandong University), Jinan 250102, China Department of Otorhinolaryngology Head and Neck Surgery, Qilu Hospital (Qingdao), Shandong University, Qingdao 266035, China
| | - K Feng
- Department of Pathology, Qilu Hospital (Qingdao), Shandong University, Qingdao 266035, China
| | - Q G Ren
- Radiological Department, Qilu Hospital (Qingdao), Shandong University, Qingdao 266035, China
| | - H Ji
- Department of Pathology, Qilu Hospital (Qingdao), Shandong University, Qingdao 266035, China
| | - X Li
- Department of Otorhinolaryngology Head and Neck Surgery, Qilu Hospital (Qingdao), Shandong University, Qingdao 266035, China
| | - C J Han
- Department of Otorhinolaryngology Head and Neck Surgery, Qilu Hospital (Qingdao), Shandong University, Qingdao 266035, China
| | - X L Pan
- NHC Key Laboratory of Otorhinolaryngology (Shandong University), Jinan 250102, China Department of Otorhinolaryngology Head and Neck Surgery, Qilu Hospital (Qingdao), Shandong University, Qingdao 266035, China
| | - Y Yuan
- NHC Key Laboratory of Otorhinolaryngology (Shandong University), Jinan 250102, China Department of Otorhinolaryngology Head and Neck Surgery, Qilu Hospital (Qingdao), Shandong University, Qingdao 266035, China
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Campbell J, Feng K, De Young L, Brock G. Intracavernous Injection of Botulinum Toxin may Improve Erectile Function in a Bilateral Cavernous Nerve Injury Animal Model. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.01.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Li XL, Xie JF, Ye XY, Li Y, Li YG, Feng K, Tian SM, Lou JH, Xia CD. [Value of cerebral hypoxic-ischemic injury markers in the early diagnosis of sepsis associated encephalopathy in burn patients with sepsis]. Zhonghua Shao Shang Yu Chuang Mian Xiu Fu Za Zhi 2022; 38:21-28. [PMID: 35152685 DOI: 10.3760/cma.j.cn501120-20211006-00346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the value of cerebral hypoxic-ischemic injury markers in the early diagnosis of sepsis associated encephalopathy (SAE) in burn patients with sepsis. Methods: A retrospective case series study was conducted. From October 2018 to May 2021, 41 burn patients with sepsis who were admitted to Zhengzhou First People's Hospital met the inclusion criteria, including 23 males and 18 females, aged 18-65 (35±3) years. According to whether SAE occurred during hospitalization, the patients were divided into SAE group (21 cases) and non-SAE group (20 cases). The gender, age, deep partial-thickness burn area, full-thickness burn area, and acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ) scores of patients were compared between the two groups. The serum levels of central nervous system specific protein S100β and neuron specific enolase (NSE) at 12, 24, and 48 h after sepsis diagnosis (hereinafter referred to as after diagnosis), the serum levels of interleukin-6 (IL-6), IL-10, tumor necrosis factor α (TNF-α), Tau protein, adrenocorticotropic hormone (ACTH), and cortisol at 12, 24, 48, 72, 120, and 168 h after diagnosis, and the mean blood flow velocity of middle cerebral artery (VmMCA), pulsatility index, and cerebral blood flow index (CBFi) on 1, 3, and 7 d after diagnosis of patients in the two groups were counted. Data were statistically analyzed with chi-square test, analysis of variance for repeated measurement, independent sample t test, and Bonferroni correction. The independent variables to predict the occurrence of SAE was screened by multi-factor logistic regression analysis. The receiver operating characteristic (ROC) curve was drawn for predicting the occurrence of SAE in burn patients with sepsis, and the area under the curve (AUC), the best threshold, and the sensitivity and specificity under the best threshold were calculated. Results: The gender, age, deep partial-thickness burn area, full-thickness burn area, and APACHE Ⅱ score of patients in the two groups were all similar (χ2=0.02, with t values of 0.71, 1.59, 0.91, and 1.07, respectively, P>0.05). At 12, 24, and 48 h after diagnosis, the serum levels of S100β and NSE of patients in SAE group were all significantly higher than those in non-SAE group (with t values of 37.74, 77.84, 44.16, 22.51, 38.76, and 29.31, respectively, P<0.01). At 12, 24, 48, 72, 120, and 168 h after diagnosis, the serum levels of IL-10, Tau protein, and ACTH of patients in SAE group were all significantly higher than those in non-SAE group (with t values of 10.68, 13.50, 10.59, 8.09, 7.17, 4.71, 5.51, 3.20, 3.61, 3.58, 3.28, 4.21, 5.91, 5.66, 4.98, 4.69, 4.78, and 2.97, respectively, P<0.01). At 12, 24, 48, 72, and 120 h after diagnosis, the serum levels of IL-6 and TNF-α of patients in SAE group were all significantly higher than those in non-SAE group (with t values of 8.56, 7.32, 2.08, 2.53, 3.37, 4.44, 5.36, 5.35, 6.85, and 5.15, respectively, P<0.05 or P<0.01). At 12, 24, and 48 h after diagnosis, the serum level of cortisol of patients in SAE group was significantly higher than that in non-SAE group (with t values of 5.44, 5.46, and 3.55, respectively, P<0.01). On 1 d after diagnosis, the VmMCA and CBFi of patients in SAE group were significantly lower than those in non-SAE group (with t values of 2.94 and 2.67, respectively, P<0.05). On 1, 3, and 7 d after diagnosis, the pulsatile index of patients in SAE group was significantly higher than that in non-SAE group (with t values of 2.56, 3.20, and 3.12, respectively, P<0.05 or P<0.01). Serum IL-6 at 12 h after diagnosis, serum Tau protein at 24 h after diagnosis, serum ACTH at 24 h after diagnosis, and serum cortisol at 24 h after diagnosis were the independent risk factors for SAE complicated in burn patients with sepsis (with odds ratios of 2.42, 1.38, 4.29, and 4.19, 95% confidence interval of 1.76-3.82, 1.06-2.45, 1.37-6.68, and 3.32-8.79, respectively, P<0.01). For 41 burn patients with sepsis, the AUC of ROC of serum IL-6 at 12 h after diagnosis for predicting SAE was 0.92 (95% confidence interval was 0.84-1.00), the best threshold was 157 pg/mL, the sensitivity was 81%, and the specificity was 89%. The AUC of ROC of serum Tau protein at 24 h after diagnosis for predicting SAE was 0.92 (95% confidence interval was 0.82-1.00), the best threshold was 6.4 pg/mL, the sensitivity was 97%, and the specificity was 99%. The AUC of ROC of serum ACTH at 24 h after diagnosis for predicting SAE was 0.96 (95% confidence interval was 0.89-1.00), the best threshold was 14.7 pg/mL, the sensitivity was 90%, and the specificity was 94%. The AUC of ROC of serum cortisol at 24 h after diagnosis for predicting SAE was 0.93 (95% confidence interval was 0.86-1.00), the best threshold was 89 nmol/L, the sensitivity was 94%, and the specificity was 97%. Conclusions: Serum Tau protein, ACTH, and cortisol have high clinical diagnostic value for SAE complicated in burn patients with sepsis.
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Affiliation(s)
- X L Li
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - J F Xie
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - X Y Ye
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - Y Li
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - Y G Li
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - K Feng
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - S M Tian
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - J H Lou
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - C D Xia
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
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Feng K, Min YQ, Sun X, Deng F, Li P, Wang H, Ning YJ. Interactome profiling reveals interaction of SARS-CoV-2 NSP13 with host factor STAT1 to suppress interferon signaling. J Mol Cell Biol 2021; 13:760-762. [PMID: 34687317 PMCID: PMC8574307 DOI: 10.1093/jmcb/mjab068] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 09/26/2021] [Accepted: 09/28/2021] [Indexed: 11/15/2022] Open
Affiliation(s)
- Kuan Feng
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071 China.,Department of Pediatric Emergency, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, 510623 China
| | - Yuan-Qin Min
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071 China.,Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071 China
| | - Xiulian Sun
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071 China.,Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071 China
| | - Fei Deng
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071 China.,Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071 China
| | - Peiqing Li
- Department of Pediatric Emergency, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, 510623 China
| | - Hualin Wang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071 China.,Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071 China
| | - Yun-Jia Ning
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071 China.,Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, 430071 China
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Ye XY, Li XL, Li YG, Li YC, Xiao HT, Zhang J, Zhao XK, Xia CD, Tian SM, Feng K. [Clinical effects of medical ozone autologous blood transfusion combined with Xingnaojing in the treatment of septic encephalopathy in burns]. Zhonghua Shao Shang Za Zhi 2021; 37:568-574. [PMID: 34139826 DOI: 10.3760/cma.j.cn501120-20200330-00204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinical effects of medical ozone autologous blood transfusion combined with Xingnaojing in the treatment of septic encephalopathy in burns. Methods: The retrospective cohort study was conducted. From August 2015 to May 2019, 90 patients with burn septic encephalopathy and conforming to the inclusion criteria were admitted to Zhengzhou First People's Hospital. Forty-six patients (25 males and 21 females, aged (35±4) years ) treated with Xingnaojing were included in Xingnaojing alone group, and forty-four patients (20 males and 24 females, aged (34±5) years) treated with medical ozone autologous blood transfusion combined with Xingnaojing were included in ozone autologous blood transfusion+Xingnaojing group. Heart rate, body temperature, mean arterial pressure, acute physiology and chronic health evaluation Ⅱ(APACHEⅡ) score and Glasgow coma score (GCS) of patients in 2 groups were recorded before treatment and on 7 d after treatment. The blood-brain barrier injury markers including occludin, nitric oxide synthase (NOS), neuron-specific enolase (NSE), central nervous system specific protein S100β, glial fibrillar acidic protein (GFAP), and excitatory amino acid (EAA) in serum of patients in 2 groups were detected before treatment and on 1, 3, and 7 d after treatment. Computer tomography perfusion imaging for brain was performed in patients of 2 groups to calculate the region of interest cerebral blood flow (rCBF), region of interest blood volume (rCBV), and region of interest mean transit time (rMTT) before treatment and on 1, 3, and 7 d after treatment. Data were statistically analyzed with chi-square test, analysis of variance for repeated measurement, independent sample t test, and Bonferroni correction. Results: On 7 d after treatment, heart rate, body temperature, and mean arterial pressure of patients in 2 groups were decreased compared with those before treatment, heart rate of patients in ozone autologous blood transfusion+Xingnaojing group was obviously higher than that in Xingnaojing alone group (t=2.886, P<0.01), body temperature of patients in ozone autologous blood transfusion+Xingnaojing group was obviously lower than that in Xingnaojing alone group (t=5.020, P<0.01), and mean arterial pressure of patients in 2 groups were close (t=0.472, P>0.05). On 7 d after treatment, APACHEⅡ score of patients in ozone autologous blood transfusion+Xingnaojing group was obviously lower than that in Xingnaojing alone group (t=3.797, P<0.01), and GCS of patients in ozone autologous blood transfusion+Xingnaojing group was obviously higher than that in Xingnaojing alone group (t=4.934, P<0.01). On 3 and 7 d after treatment, the levels of occludin, NOS, NSE, S100β, GFAP, and EAA in serum of patients in ozone autologous blood transfusion+Xingnaojing group were significantly lower than those in Xingnaojing alone group (t=2.100, 2.090, 2.691, 2.013, 2.474, 2.635, 2.225, 4.011, 3.150, 2.691, 3.145, 2.781, P<0.05 or P<0.01). On 1, 3, and 7 d after treatment, rCBF and rCBV of patients in ozone autologous blood transfusion+Xingnaojing group were significantly increased compared with those in Xingnaojing alone group (t=3.127, 3.244, 3.883, 7.274, 3.661, 2.777, P<0.01). On 7 d after treatment, rMTT of patients in ozone autologous blood transfusion+Xingnaojing group was (3.02±0.57) s, which was significantly lower than (3.11±1.20) s in Xingnaojing alone group (t=2.409, P<0.05). Conclusions: Transfusion of medical ozone autologous blood combined with Xingnaojing therapy can effectively relieve brain injury and improve cerebral blood perfusion in patients with burn septic encephalopathy, which is with safety and credibility.
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Affiliation(s)
- X Y Ye
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - X L Li
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - Y G Li
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - Y C Li
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - H T Xiao
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - J Zhang
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - X K Zhao
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - C D Xia
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - S M Tian
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - K Feng
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
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Ke LT, Feng K, Wang WT, Qin ZY, Yu CH, Wu Y, Chen Y, Qi R, Zhang ZJ, Xu Y, Yang XJ, Leng YX, Liu JS, Li RX, Xu ZZ. Near-GeV Electron Beams at a Few Per-Mille Level from a Laser Wakefield Accelerator via Density-Tailored Plasma. Phys Rev Lett 2021; 126:214801. [PMID: 34114880 DOI: 10.1103/physrevlett.126.214801] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 03/18/2021] [Accepted: 04/28/2021] [Indexed: 06/12/2023]
Abstract
A simple, efficient scheme was developed to obtain near-gigaelectronvolt electron beams with energy spreads of few per-mille level in a single-stage laser wakefield accelerator. Longitudinal plasma density was tailored to control relativistic laser-beam evolution, resulting in injection, dechirping, and a quasi-phase-stable acceleration. With this scheme, electron beams with peak energies of 780-840 MeV, rms energy spreads of 2.4‰-4.1‰, charges of 8.5-23.6 pC, and rms divergences of 0.1-0.4 mrad were experimentally obtained. Quasi-three-dimensional particle-in-cell simulations agreed well with the experimental results. The dechirping strength was estimated to reach up to 11 TeV/mm/m, which is higher than previously obtained results. Such high-quality electron beams will boost the development of compact intense coherent radiation sources and x-ray free-electron lasers.
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Affiliation(s)
- L T Ke
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - K Feng
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China
| | - W T Wang
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China
| | - Z Y Qin
- Department of Physics, Shanghai Normal University, Shanghai 200234, People's Republic of China
| | - C H Yu
- Department of Physics, Shanghai Normal University, Shanghai 200234, People's Republic of China
| | - Y Wu
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China
| | - Y Chen
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China
| | - R Qi
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China
| | - Z J Zhang
- Department of Physics, Shanghai Normal University, Shanghai 200234, People's Republic of China
| | - Y Xu
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China
| | - X J Yang
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China
| | - Y X Leng
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China
- School of Physical Science and Technology, Shanghai Tech University, Shanghai 200031, People's Republic of China
| | - J S Liu
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China
- Department of Physics, Shanghai Normal University, Shanghai 200234, People's Republic of China
| | - R X Li
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
- School of Physical Science and Technology, Shanghai Tech University, Shanghai 200031, People's Republic of China
| | - Z Z Xu
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), Shanghai 201800, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
- School of Physical Science and Technology, Shanghai Tech University, Shanghai 200031, People's Republic of China
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20
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Li XL, Ye XY, Li YG, Xiao HT, Zhao XK, Zhang J, Feng K, Tian SM, Lou JH, Xia CD. [Value of renal injury marker protein in early diagnosis of acute kidney injury in burn patients with delayed resuscitation]. Zhonghua Shao Shang Za Zhi 2021; 37:143-149. [PMID: 33550768 DOI: 10.3760/cma.j.cn501120-20200915-00411] [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 explore the value of renal injury marker protein in early diagnosis of acute kidney injury (AKI) in burn patients with delayed resuscitation. Methods: The retrospective case-control research was conducted. Forty-three burn patients with delayed resuscitation (27 males and 16 females, with age of 18-75 (35±3) years)who were admitted to Zhengzhou First People's Hospital from May 2018 to May 2020 met the inclusion criteria. The patients were divided into AKI group with 23 patients and non-AKI group with 20 patients according to whether AKI occurred within 7 days after burns. The gender, age, deep partial-thickness burn area, full-thickness burn area, and acute physiology and chronic health evaluation Ⅱ of patients were compared between the two groups.The fluid supplement volume and serum creatinine at 12, 24, and 48 h after burn, serum albumin/fibrinogen ratio (AFR), urinary heat shock protein 70 (HSP70), tissue inhibitor of metalloproteinase-2 (TIMP-2)×insulin-like growth factor binding protein 7 (IGFBP-7), and neutrophil gelatinase associated lipocalin (NGAL)at 12, 24, 48, 72, 120, and 168 h after burn were detected.Data were statistically analyzed with Mann-Whitney U test, analysis of variance for repeated measurement, independent-samples t test, chi-square test and Bonferroni correction. The independent variable to predict the occurrence of AKI was screened by multi-factor logistic regression analysis. The receiver's operating characteristic curve was drawn for predicting the occurrence of AKI in burn delayed resuscitation patients, and the area under the curve (AUC), the best threshold, and the sensitivity and specificity under the best threshold were calculated. Results: The gender, age, deep partial-thickness burn area, full-thickness burn area, acute physiology and chronic health evaluation Ⅱ of patients in two groups were similar (χ(2)=1.98, t=1.98, 1.99, 1.99, 1.99, P>0.05). The fluid supplement volume of patients in AKI group at 24 and 48 h after burn was significantly less than that in non-AKI group (t=15.37, 6.51, P<0.01). The serum creatinine of patients in AKI group at 12, 24, and 48 h after burn was significantly higher than that in non-AKI group (Z=2.16, 5.62, 6.72, P<0.01). The serum AFR of patients in AKI group at 12, 24, 48, 72, 120, and 168 h after burn was significantly lower than that in non-AKI group (t=16.14, 35.35, 19.60, 20.47, 30.20, 20.17, P<0.01). The levels of urinary HSP70 of patients in AKI group at 12, 24, 48, 72, 120, and 168 h after burn were (6.89±0.87), (6.42±0.73), (5.81±0.72), (5.17±0.56), (4.63±0.51), (3.89±0.51) μg/L, which were significantly higher than (3.89±0.75), (3.57±0.63), (2.66±0.41), (1.83±0.35), (1.48±0.19), (1.28±0.19) μg/L in non-AKI group (t=12.00, 13.61, 17.39, 22.98, 26.34, 21.59, P<0.01). Urinary TIMP-2×IGFBP-7 and NGAL of patients in AKI group at 12, 24, 48, 72, 120, 168 h after burn were significantly higher than those in non-AKI group (t=26.94, 101.11, 35.50, 66.89, 17.34, 14.30, 14.00, 13.78, 12.32, 14.80, 21.36, 22.62, P<0.01). Urinary HSP70 and serum AFR at 12 h after burn, urinary TIMP-2×IGFBP-7 and NGAL at 24 h after burn were included into multi-factor logistic regression analysis (odds ratio=2.42, 3.47, 7.52, 5.61, 95% confidence interval=1.99-2.95, 1.86-3.92, 2.87-9.68, 2.14-14.69, P<0.01). For 43 patients with burn delayed resuscitation, the AUC of receiver's operating characteristic curve of serum AFR at 12 h after burn for predicting AKI was 0.739 (95% confidence interval=0.576-0.903), the optimal threshold was 9.90, the sensitivity was 82%, and the specificity was 90%. The AUC of urinary HSP70 at 12 h after burn was 0.990 (95% confidence interval=0.920-1.000), the optimal threshold was 1.40 μg/L, the sensitivity was 98%, and the specificity was 96%. The AUC of urinary TIMP-2×IGFBP-7 at 24 h after burn was 0.715 (95% confidence interval=0.512-0.890), the optimal threshold was 114.20 μg(2)/L(2), the sensitivity was 91%, and the specificity was 95%. The AUC of urinary NGAL at 24 h after burn was 0.972 (95% confidence interval=0.860-1.000), the optimal threshold was 78 μg/L, the sensitivity was 95%, and the specificity was 96%. Conclusions: Urinary HSP70 and NGAL have higher value in early diagnosis of AKI in burn patients with delayed resuscitation.
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Affiliation(s)
- X L Li
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - X Y Ye
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - Y G Li
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - H T Xiao
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - X K Zhao
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - J Zhang
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - K Feng
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - S M Tian
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - J H Lou
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - C D Xia
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
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Lv ZC, Cao XY, Guo YX, Zhang XD, Ding J, Geng J, Feng K, Niu H. MiR-137-5p alleviates inflammation by upregulating IL-10R1 expression in rats with spinal cord injury. Eur Rev Med Pharmacol Sci 2020; 23:4551-4557. [PMID: 31210303 DOI: 10.26355/eurrev_201906_18030] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This study aims to explore the potential functions of miR-137-5p and interleukin-10R1 (IL-10R1) in mediating the immune inflammation after spinal cord injury (SCI). MATERIALS AND METHODS Firstly, primary microglia were isolated from the spinal cord of newborn rats. Expression levels of miR-137-5p and IL-10R1 in LPS-induced microglia were determined by quantitative Real-time polymerase chain reaction (qRT-PCR). In addition, mRNA expressions of Janus kinase (Jak1) and signal transducer and activator of transcription 3 (STAT3) were also examined by qRT-PCR. SCI model in rats was established and randomly assigned to three different groups: Sham group, SCI group and miR-137-5p mimic group. Within one week of spinal injury, relative levels of miR-137-5p and IL-10R1 in rats of different groups were detected by qRT-PCR. The mRNA levels of JAK1, tyrosine kinase (Tyk2) and STAT3 in rats were also measured. Moreover, protein expression of IL-1β, TNF-α and IL-6 in rats was measured by Western blotting. Finally, the improvement of locomotor function in three groups of rats within 4 weeks via BBB rating scale. RESULTS Transfection of miR-137-5p mimics upregulated relative levels of IL-10R1, JAK1 and STAT3 in in vitro cultured microglia. Similarly, IL-10R1/JAK1/STAT3 pathway was activated in rats administrated with miR-137-5p mimics. Nevertheless, relative levels of classical inflammatory stimulators IL-1β, TNF-α and IL-6 were downregulated accordingly by miR-137-5p overexpression. Moreover, miR-137-5p effectively improved the locomotor function of rats after SCI. CONCLUSIONS MiR-137-5p exerts an anti-inflammatory response by upregulating IL-10R1, thus improving locomotor function and alleviating spinal cord injury.
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Affiliation(s)
- Z-C Lv
- Department of Spine Surgery, Luoyang Orthopedic Hospital of Henan Province, Zhengzhou, China.
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22
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Lv ZC, Cao XY, Guo YX, Zhang XD, Ding J, Geng J, Feng K, Niu H. Effects of MiR-146a on repair and inflammation in rats with spinal cord injury through the TLR/NF-κB signaling pathway. Eur Rev Med Pharmacol Sci 2020; 23:4558-4563. [PMID: 31210336 DOI: 10.26355/eurrev_201906_18031] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This study aims to investigate the effects of micro ribonucleic acid-34a (miR-34a) on repair and inflammation of rats with spinal cord injury (SCI) through the toll-like receptor (TLR)/nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) signaling pathway. MATERIALS AND METHODS In this study, 12 healthy rats (control group (CG)) and 24 SCI rats (experimental group (EG-1)) were selected as subjects. A total of 12 experimental rats randomly selected from EG-1 were injected with 5 µL agomiR-146 as EG-2 group. Serum levels of miR-146a, TLR, NF-κB, interleukin-8 (IL-8) and IL-6 of rats in CG and EG-1 were detected by quantitative reverse transcription-polymerase chain reaction (qRT-PCR). Furthermore, the protein levels of miR-146a, TLR, NF-κB, IL-8 and IL-6 in rats of CG and EG were detected via Western blotting. Spinal cord tissue sections of SCI rats after treatment with agomiR-146 were observed by hematoxylin and eosin staining (H&E) staining. RESULTS The mRNA level of miR-146a in SCI rats was significantly lower than that in healthy rats, and the difference was statistically significant (p < 0.05). The mRNA levels of TLR, NF-κB, IL-8 and IL-6 in SCI rats were markedly higher than those in healthy rats, showing significant differences (p < 0.05). However, the relative mRNA level of miR-146a in EG-2 group was significantly higher than that in EG-1 group, with a significant difference (p < 0.05). Relative level of miR-146a was not significantly different between EG-2 group and CG group (p > 0.05). Meanwhile, the mRNA levels of TLR, NF-κB, IL-8 and IL-6 in EG-2 group were evidently lower than those in EG-1 group, displaying significant differences (p < 0.05). CONCLUSIONS MiR-146a can promote the repair of SCI and reduce inflammatory responses in rats through the TLR/NF-κB signaling pathway.
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Affiliation(s)
- Z-C Lv
- Department of Spine Surgery, Luoyang Orthopedic Hospital of Henan Province, Zhengzhou, China.
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Li XL, Xiao HT, Zhang J, Li YG, Ye XY, Zhao XK, Wang L, Feng K, Tian SM, Lou JH, Xia CD, Li YC. [Successful rescue of one severe burn patient accompanied by asphyxia, sudden cardiac arrest, and acute respiratory distress syndrome]. Zhonghua Shao Shang Za Zhi 2020; 36:743-745. [PMID: 32829617 DOI: 10.3760/cma.j.cn501120-20190811-00344] [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
On March 14, 2017, a thirty years old male severe burn patient accompanied by asphyxia, sudden cardiac arrest, and acute respiratory distress syndrome was admitted to Zhengzhou First People's Hospital. During the shock stage, the pulse contour cardiac output was monitored for the restrictive rehydration, tracheotomy was performed, and fibrobronchoscope lavage was performed for the treatment of inhalation injury and pulmonary infection. An alternate application of suspended bed and turning bed was conducted to balance the treatment of cerebral edema and pulmonary infection; targeted antibiotics were used for anti-infective treatment; multiple operations were performed for eschar excision and skin grafting. At last, the wounds were all healed, the lung infection was cured, and the patient was discharged with severe disturbance of consciousness. Asphyxia and acute respiratory distress syndrome post-cardiopulmonary resuscitation are serious complications in severe burn patients. The clinical treatment of such patients is very difficult and should be highly alerted.
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Affiliation(s)
- X L Li
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - H T Xiao
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - J Zhang
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - Y G Li
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - X Y Ye
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - X K Zhao
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - L Wang
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - K Feng
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - S M Tian
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - J H Lou
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - C D Xia
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - Y C Li
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
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Yang X, Hu W, Xiu Z, Jiang A, Yang X, Saren G, Ji Y, Guan Y, Feng K. Effect of salt concentration on microbial communities, physicochemical properties and metabolite profile during spontaneous fermentation of Chinese northeast sauerkraut. J Appl Microbiol 2020; 129:1458-1471. [PMID: 32677269 DOI: 10.1111/jam.14786] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 06/29/2020] [Accepted: 07/12/2020] [Indexed: 11/30/2022]
Abstract
AIM The aim of this study was to study the effects of salt concentrations on the microbial communities, physicochemical properties, metabolome profiles and sensory characteristics during the fermentation of traditional northeast sauerkraut. METHODS AND RESULTS Northeast sauerkraut was spontaneously fermented under four salt concentrations (0·5, 1·5, 2·5 and 3·5%, w/w). The result of microbiological analysis showed that the population of lactic acid bacteria in 2·5%-salted sauerkraut was significantly higher than that in the other samples. Correspondingly, the speed of decrease in pH and accumulation of acids were the highest in 2·5%-salted sauerkraut. The glucose (analysed by HPLC) in 2·5%-salted sauerkraut was consumed more completely to produce higher levels of organic acids compared to those in the other samples. Principle component analysis showed clear differences in the metabolites of sauerkraut according to different salt concentrations. A higher level of volatiles (detected by HS-SPME/GC-MS) was identified in 2·5%-salted sauerkraut, and sensory evaluation demonstrated that 2·5%-salted sauerkraut had the best sensory characteristics. CONCLUSION The best quality of sauerkraut was obtained from fermented under 2·5% salt concentration. SIGNIFICANCE AND IMPACT OF THE STUDY This study facilitated the understanding of the effects of salt on the sauerkraut fermentation and may be useful for developing the quality of sauerkraut.
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Affiliation(s)
- X Yang
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, PR China.,College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - W Hu
- College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - Z Xiu
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, PR China
| | - A Jiang
- College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - X Yang
- College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - G Saren
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, PR China.,College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - Y Ji
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, PR China.,College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - Y Guan
- School of Bioengineering, Dalian University of Technology, Dalian, Liaoning, PR China.,College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
| | - K Feng
- College of Life Science, Dalian Minzu University, Dalian, Liaoning, PR China.,Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, Liaoning, PR China
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Min YQ, Shi C, Yao T, Feng K, Mo Q, Deng F, Wang H, Ning YJ. The Nonstructural Protein of Guertu Virus Disrupts Host Defenses by Blocking Antiviral Interferon Induction and Action. ACS Infect Dis 2020; 6:857-870. [PMID: 32167734 DOI: 10.1021/acsinfecdis.9b00492] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Guertu virus (GTV) is a potentially highly pathogenic bunyavirus newly isolated in China, which is genetically related to the severe fever with thrombocytopenia syndrome virus (SFTSV) and Heartland virus (HRTV), two other emerging life-threatening bunyaviruses. Previous studies suggested that SFTSV and HRTV antagonize the interferon (IFN) system by targeting antiviral signaling proteins in different ways. However, whether and how GTV counteracts the host innate immunity are unclear. Here, we found that GTV strongly inhibits both IFN induction and action through its nonstructural protein (NSs). Different from the NSs of SFTSV and HRTV, GTV NSs (G-NSs) induced the formation of two distinctive cytoplasmic structures, compact inclusion bodies (IBs) and extended filamentous structures (FSs). Protein interaction and colocalization analyses demonstrated that G-NSs interacts with TBK1 (TANK binding kinase-1, the pivotal kinase for IFN induction) and STAT2 (signal transducer and activator of transcription 2, the essential transcription factor for IFN action) and irreversibly sequesters the host proteins into the viral IBs and FSs. Consistently, G-NSs thus inhibited phosphorylation/activation and nuclear translocation of IFN-regulatory factor 3 (IRF3, the substrate of TBK1), diminishing the IFN induction. Furthermore, G-NSs sequestration of STAT2 blocked phosphorylation/activation and nuclear translocation of STAT2, disabling IFN action and host antiviral state establishment. Collectively, this study shows the robust subversion of the two phases of the IFN antiviral system by GTV and unravels the respective molecular mechanisms, exhibiting some notable differences from those employed by SFTSV and HRTV, providing insights into the virus-host interactions and pathogenesis, and probably also benefiting the prevention and treatment of the related infectious diseases in the future.
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Affiliation(s)
- Yuan-Qin Min
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
- Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
| | - Chen Shi
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
- The University of Chinese Academy of Sciences, Beijing 101408, China
| | - Ting Yao
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
- The University of Chinese Academy of Sciences, Beijing 101408, China
| | - Kuan Feng
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
- The University of Chinese Academy of Sciences, Beijing 101408, China
| | - Qiong Mo
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
- The University of Chinese Academy of Sciences, Beijing 101408, China
| | - Fei Deng
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
- Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
| | - Hualin Wang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
- Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
| | - Yun-Jia Ning
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
- Center for Biosafety Mega-Science, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
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Feng K, Yun YX, Wang XF, Yang GD, Zheng YJ, Lin CM, Wang LF. [Analysis of CT features of 15 children with 2019 novel coronavirus infection]. Zhonghua Er Ke Za Zhi 2020; 58:275-278. [PMID: 32234131 DOI: 10.3760/cma.j.cn112140-20200210-00071] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore imaging characteristics of children with 2019 novel coronavirus (2019-nCoV) infection. Methods: A retrospective analysis was performed on clinical data and chest CT images of 15 children diagnosed with 2019-nCoV infection. They were admitted to the Third People's Hospital of Shenzhen from January 16 to February 6, 2020. The distribution and morphology of pulmonary lesions on chest CT images were analyzed. Results: Among the 15 children, 5 were males and 10 females, aged from 4 to 14 years. Five of the 15 children were febrile and 10 were asymptomatic on the first visit. The first nasal or pharyngeal swab samples in all the 15 cases were positive for 2019-nCoV nucleic acid. For their first chest CT images, 6 patients had no lesions, while 9 patients had pulmonary inflammatory lesions. Seven cases had small nodular ground glass opacities and 2 cases had speckled ground glass opacities. After 3 to 5 days of treatment, 2019-nCoV nucleic acid in a second respiratory sample turned negative in 6 cases. Among them, chest CT images showed less lesions in 2 cases, no lesion in 3 cases, and no improvement in 1 case. The remaining 9 cases were still positive in a second nucleic acid test. Six patients showed similar chest CT inflammation, while 3 patients had new lesions, which were all small nodular ground glass opacities. Conclusions: The early chest CT images of children with 2019-nCoV infection are mostly small nodular ground glass opacities. The clinical symptoms of children with 2019-nCoV infection are nonspecific. Dynamic reexamination of chest CT and nucleic acid are important.
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Affiliation(s)
- K Feng
- Department of Radiology, the Third People's Hospital of Shenzhen, Shenzhen 518100, China
| | - Y X Yun
- Department of Radiology, the Third People's Hospital of Shenzhen, Shenzhen 518100, China
| | - X F Wang
- Department of Pediatrics, the Third People's Hospital of Shenzhen, Shenzhen 518100, China
| | - G D Yang
- Department of Radiology, the Third People's Hospital of Shenzhen, Shenzhen 518100, China
| | - Y J Zheng
- Department of Respiratory Medicine, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - C M Lin
- Department of Radiology, the Third People's Hospital of Shenzhen, Shenzhen 518100, China
| | - L F Wang
- Department of Radiology, the Third People's Hospital of Shenzhen, Shenzhen 518100, China
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27
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Chang E, Moayedi Y, Hoppenfeld M, Lafreniere-Roula M, Fan S, Henricksen E, Feng K, Morales D, Purewal S, Duclos S, Lee R, Lyapin A, Currie M, Ross H, Teuteberg J, Khush K. Malignancy Following Heart Transplant: Few and Far Between. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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28
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Feng K, Yun YX, Wang XF, Yang GD, Zheng YJ, Lin CM, Wang LF. [Analysis of CT features of 15 Children with 2019 novel coronavirus infection]. Zhonghua Er Ke Za Zhi 2020; 58:E007. [PMID: 32061200 DOI: 10.3760/cma.j.issn.0578-1310.2020.0007] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore imaging characteristics of children with 2019 novel coronavirus (2019-nCoV) infection. Methods: A retrospective analysis was performed on clinical data and chest CT images of 15 children diagnosed with 2019-nCoV. They were admitted to the third people's Hospital of Shenzhen from January 16 to February 6, 2020. The distribution and morphology of pulmonary lesions on chest CT images were analyzed. Results: Among the 15 children, there were 5 males and 10 females, aged from 4 to 14 years old. Five of the 15 children were febrile and 10 were asymptomatic on first visit. The first nasal or pharyngeal swab samples in all the 15 cases were positive for 2019-nCoV nucleic acid. For their first chest CT images, 6 patients had no lesions, while 9 patients had pulmonary inflammation lesions. Seven cases of small nodular ground glass opacities and 2 cases of speckled ground glass opacities were found. After 3 to 5 days of treatment, 2019-nCoV nucleic acid in a second respiratory sample turned negative in 6 cases. Among them, chest CT images showed less lesions in 2 cases, no lesion in 3 cases, and no improvement in 1 case. Other 9 cases were still positive in a second nucleic acid test. Six patients showed similar chest CT inflammation, while 3 patients had new lesions, which were all small nodular ground glass opacities. Conclusions: The early chest CT images of children with 2019-nCoV infection are mostly small nodular ground glass opacities. The clinical symptoms of children with 2019-nCoV infection are nonspecific. Dynamic reexamination of chest CT and nucleic acid are important.
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Affiliation(s)
- K Feng
- Department of Radiology, the third people's Hospital of Shenzhen, Shenzhen 518100, China
| | - Y X Yun
- Department of Radiology, the third people's Hospital of Shenzhen, Shenzhen 518100, China
| | - X F Wang
- Department of Pediatrics, the third people's Hospital of Shenzhen, Shenzhen 518100, China
| | - G D Yang
- Department of Radiology, the third people's Hospital of Shenzhen, Shenzhen 518100, China
| | - Y J Zheng
- Department of Respiratory Medicine, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - C M Lin
- Department of Radiology, the third people's Hospital of Shenzhen, Shenzhen 518100, China
| | - L F Wang
- Department of Radiology, the third people's Hospital of Shenzhen, Shenzhen 518100, China
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29
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Yin DG, Yan B, Feng K. Exploration of the relationship between DNA methyltransferase 1 and lung cancer screening. J BIOL REG HOMEOS AG 2020; 33:1789-1795. [PMID: 31989805 DOI: 10.23812/19-208-l] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- D G Yin
- Department of Thoracic Surgery, Xixi Hospital, Hangzhou, China
| | - B Yan
- Department of Thoracic Surgery, Xixi Hospital, Hangzhou, China
| | - K Feng
- Department of Thoracic Surgery, First Hospital, Fuyang District, Hangzhou, China
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30
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Li XL, Xiao HT, Li YC, Li YG, Zhang J, Feng K, Di HP, Tian SM, Lou JH, Xia CD. [Effects of citric acid on patients with severe burn complicated with acute renal injury treated by continuous renal replacement therapy]. Zhonghua Shao Shang Za Zhi 2019; 35:568-573. [PMID: 31474035 DOI: 10.3760/cma.j.issn.1009-2587.2019.08.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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 explore the effects of citric acid on patients with severe burn complicated with acute renal injury treated by continuous renal replacement therapy (CRRT). Methods: Medical records of 83 patients with large area of burn complicated with acute renal injury admitted to intensive care unit (ICU) of our department from January 2015 to December 2018 and meeting the inclusion criteria were analyzed retrospectively. The patients were divided into heparin group [n=43, 25 males and 18 females, aged (35.0±2.5) years] and citric acid group [n=40, 22 males and 18 females, aged (37.0±6.6) years] according to different anticoagulation methods. After admission, routine support treatment and CRRT were performed after being diagnosed with acute renal injury in patients in 2 groups. Patients in heparin group were treated with low molecular weight heparin for anticoagulation with first dosage of 20 U/kg and an increase of 2.5 to 5.0 U per hour, and patients in citric acid group were given citric acid of 0.02 g/mL with dosage of 150~200 mL/h for anticoagulation. The use time of blood filter, recovery time of urine volume, and time of staying in ICU, and platelet count, activated partial thromboplastin time (APTT), prothrombin time (PT), and serum creatinine, urea nitrogen, cystatin C, procalcitonin, C-reactive protein, and neutrophil, leukocyte count, blood sugar, aspartate aminotransferase (AST), alanine aminotransferase (ALT), and heart rate, body temperature, and mean arterial pressure before treatment and post treatment hour (PTH) 24 were recorded. Besides, occurrence of hemorrhage, hypocalcemia, metabolic acidosis, metabolic alkalosis, and death within 28 days post injury were recorded. Data were processed with t test and chi-square test. Results: The use time of blood filter of patients in citric acid group was (28.7±3.2)h, significantly longer than (19.4±2.6) h in heparin group (t=14.139, P<0.01). The recovery time of urine volume and time of staying in ICU of patients in citric acid group were respectively (7.6±0.9) and (9.6±1.3) d, significantly shorter than (9.2±1.5) and (11.2±1.8) d in heparin group (t=5.516, 4.697, P<0.01). Before treatment, there were no statistically significant differences in platelet count, APTT, and PT of patients in 2 groups (t=1.235, 0.515, 1.279, P>0.05). At PTH 24, the platelet count of patients in citric acid group was significantly higher than that in heparin group (t=10.947, P<0.01), and APTT and PT of patients in citric acid group were significantly shorter than those in heparin group (t=7.069, 9.142, P<0.01). Before treatment, there were no statistically significant differences in serum creatinine, urea nitrogen, and cystatin C of patients in 2 groups (t=1.684, 1.878, 1.472, P>0.05). At PTH 24, the serum creatinine, urea nitrogen, and cystatin C of patients in citric acid group were significantly lower than those in heparin group (t=7.778, 9.776, 5.117, P<0.01). Before treatment, there were no statistically significant differences in serum procalcitonin and C-reactive protein of patients in 2 groups (t=1.413, 0.898, P>0.05). At PTH 24, the serum procalcitonin and C-reactive protein of patients in citric acid group were significantly lower than those in heparin group (t=2.635, 2.297, P<0.05). Before treatment, there were no statistically significant differences in neutrophil, leukocyte count, blood sugar, AST, and ALT of patients in 2 groups (t=0.555, 0.816, 0.470, 1.896, 0.982, P>0.05). At PTH 24, the neutrophil, leukocyte count, blood sugar, AST, and ALT of patients in citric acid group were significantly lower than those in heparin group (t=2.054, 3.314, 7.185, 2.151, 3.013, P<0.05 or P<0.01). Before treatment, there were no statistically significant differences in heart rate, body temperature, and mean arterial pressure of patients in 2 groups (t=1.406, 0.474, 0.720, P>0.05). At PTH 24, the heart rate, body temperature, and mean arterial pressure of patients in citric acid group were significantly lower than those in heparin group (t=2.307, 4.498, 2.056, P<0.05 or P<0.01). The incidence of hemorrhage of patients in citric acid group while in hospital was significantly lower than that in heparin group (χ(2)=4.949, P<0.05). There were no statistically significant differences in incidence of hypocalcemia, metabolic acidosis, metabolic alkalosis, and death rate within 28 days post injury of patients in 2 groups while in hospital (χ(2)=3.346, 0.884, 0.297, 0.324, P>0.05). Conclusions: Citric acid has significant anticoagulant effect on patients with large area of burn complicated with acute renal injury treated by CRRT, which can prolong the use time of the blood filter, shorten the recovery time of urine volume and time of staying in ICU, improve renal function indexes, blood biochemical indexes, and inflammation indexes, maintain the stability of internal environment, and reduce the risk of hemorrhage.
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Affiliation(s)
- X L Li
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
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31
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Ma ZZ, Feng K. [Transition in the treatment viewpoint and method for injured eyes with no light perception]. Zhonghua Yan Ke Za Zhi 2019; 55:645-646. [PMID: 31495149 DOI: 10.3760/cma.j.issn.0412-4081.2019.09.003] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Exploratory pars plana vitrectomy (EPPV) made one quarter of injured eyes with no light perception (NLP) rescued. Previously, the clinical routine in making a decision of enucleation for injured eyes with NLP was based on preoperative evaluation. Such ideas, however, have altered with development of EPPV. Some extraordinary lesions can be explored in those moribund eyes during EPPV and dealt with newly developed techniques. This article reveals the pathological basis of traumatized NLP eyes and the advantages and effects of EPPV, and puts forward the concept that decision making of enucleation should be based on findings obtained during EPPV. (Chin J Ophthalmol, 2019, 55: 645-646).
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Affiliation(s)
- Z Z Ma
- Department of Ophthalmology, Peking University Third Hospital, Beijing 100191, China
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32
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Ning YJ, Mo Q, Feng K, Min YQ, Li M, Hou D, Peng C, Zheng X, Deng F, Hu Z, Wang H. Interferon-γ-Directed Inhibition of a Novel High-Pathogenic Phlebovirus and Viral Antagonism of the Antiviral Signaling by Targeting STAT1. Front Immunol 2019; 10:1182. [PMID: 31191546 PMCID: PMC6546826 DOI: 10.3389/fimmu.2019.01182] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 05/09/2019] [Indexed: 12/20/2022] Open
Abstract
Severe fever with thrombocytopenia syndrome (SFTS) is a life-threatening infectious disease caused by a novel phlebovirus, SFTS virus (SFTSV). Currently, there is no vaccine or antiviral available and the viral pathogenesis remains largely unknown. In this study, we demonstrated that SFTSV infection results in substantial production of serum interferon-γ (IFN-γ) in patients and then that IFN-γ in turn exhibits a robust anti-SFTSV activity in cultured cells, indicating the potential role of IFN-γ in anti-SFTSV immune responses. However, the IFN-γ anti-SFTSV efficacy was compromised once viral infection had been established. Consistently, we found that viral nonstructural protein (NSs) expression counteracts IFN-γ signaling. By protein interaction analyses combined with mass spectrometry, we identified the transcription factor of IFN-γ signaling pathway, STAT1, as the cellular target of SFTSV for IFN-γ antagonism. Mechanistically, SFTSV blocks IFN-γ-triggered STAT1 action through (1) NSs-STAT1 interaction-mediated sequestration of STAT1 into viral inclusion bodies and (2) viral infection-induced downregulation of STAT1 protein level. Finally, the efficacy of IFN-γ as an anti-SFTSV drug in vivo was evaluated in a mouse infection model: IFN-γ pretreatment but not posttreatment conferred significant protection to mice against lethal SFTSV infection, confirming IFN-γ's anti-SFTSV effect and viral antagonism against IFN-γ after the infection establishment. These findings present a picture of virus-host arm race and may promote not only the understanding of virus-host interactions and viral pathogenesis but also the development of antiviral therapeutics.
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Affiliation(s)
- Yun-Jia Ning
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Qiong Mo
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Kuan Feng
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yuan-Qin Min
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Mingyue Li
- Department of Infectious Diseases, Union Hospital, Institute of Infection and Immunology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Dianhai Hou
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Cheng Peng
- Department of Infectious Diseases, Union Hospital, Institute of Infection and Immunology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xin Zheng
- Department of Infectious Diseases, Union Hospital, Institute of Infection and Immunology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fei Deng
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Zhihong Hu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
| | - Hualin Wang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, China
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Feng K, Deng F, Hu Z, Wang H, Ning YJ. Heartland virus antagonizes type I and III interferon antiviral signaling by inhibiting phosphorylation and nuclear translocation of STAT2 and STAT1. J Biol Chem 2019; 294:9503-9517. [PMID: 31040183 DOI: 10.1074/jbc.ra118.006563] [Citation(s) in RCA: 26] [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: 11/04/2018] [Revised: 04/17/2019] [Indexed: 01/30/2023] Open
Abstract
Heartland virus (HRTV) is a pathogenic phlebovirus recently identified in the United States and related to severe fever with thrombocytopenia syndrome virus (SFTSV) emerging in Asia. We previously reported that SFTSV disrupts host antiviral responses directed by interferons (IFNs) and their downstream regulators, signal transducer and activator of transcription (STAT) proteins. However, whether HRTV infection antagonizes the IFN-STAT signaling axis remains unclear. Here, we show that, similar to SFTSV, HRTV also inhibits IFN-α- and IFN-λ-mediated antiviral responses. As expected, the nonstructural protein (NSs) of HRTV (HNSs) robustly antagonized both type I and III IFN signaling. Protein interaction analyses revealed that a common component downstream of type I and III IFN signaling, STAT2, is the target of HNSs. Of note, the DNA-binding and linker domains of STAT2 were required for an efficient HNSs-STAT2 interaction. Unlike the NSs of SFTSV (SNSs), which blocks both STAT2 and STAT1 nuclear accumulation, HNSs specifically blocked IFN-triggered nuclear translocation only of STAT2. However, upon HRTV infection, IFN-induced nuclear translocation of both STAT2 and STAT1 was suppressed, suggesting that STAT1 is an additional HRTV target for IFN antagonism. Consistently, despite HNSs inhibiting phosphorylation only of STAT2 and not STAT1, HRTV infection diminished both STAT2 and STAT1 phosphorylation. These results suggest that HRTV antagonizes IFN antiviral signaling by dampening both STAT2 and STAT1 activities. We propose that HNSs-specific targeting of STAT2 likely plays an important role but is not all of the "tactics" of HRTV in its immune evasion.
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Affiliation(s)
- Kuan Feng
- From the State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China and.,the University of Chinese Academy of Sciences, Beijing 101408, China
| | - Fei Deng
- From the State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China and
| | - Zhihong Hu
- From the State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China and
| | - Hualin Wang
- From the State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China and
| | - Yun-Jia Ning
- From the State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China and
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34
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Xia CD, Di HP, Xing PP, Xue JD, Cao DY, Tian SM, Wang LM, Feng K, Zhao YH. [Clinical effect of free anterolateral thigh flap in repairing large annular soft tissue defect of lower leg after burn]. Zhonghua Shao Shang Za Zhi 2019; 35:248-252. [PMID: 31060171 DOI: 10.3760/cma.j.issn.1009-2587.2019.04.003] [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] [Indexed: 11/05/2022]
Abstract
Objective: To explore the clinical effect of free anterolateral thigh flap in repairing large annular soft tissue defect of lower leg after burn. Methods: From January 2014 to December 2018, 9 patients with large annular soft tissue defects of lower legs after burns were hospitalized in Zhengzhou First People's Hospital, including 1 case with wounds on both legs. After debridement, area of wounds was 16 cm×11 cm-38 cm×21 cm, and the burn wounds were repaired with free anterolateral thigh flaps in the area of 18 cm×12 cm-32 cm×24 cm. End-to-end anastomosis of posterior tibial vessels or anterior tibial vessels with lateral circumflex femoral vessels was performed in manual way or by microvascular stapler. For the affected legs without condition for anastomosis, the sound medial lower leg flaps with areas of 10 cm×8 cm-15 cm×10 cm were excised and made into skin tubes, the posterior tibial vessels of the flaps were anastomosed with the vessels of free anterolateral femoral flaps, and the wounds of the injured lower legs were repaired by bridge-type cross-over free transplantation of anterolateral thigh flaps. The pedicles were broken 4 to 5 weeks later. The donor site was transplanted with autologous intermediate split-thickness skin graft from thigh. The outcome of the treatment, the number of perforators included in the flaps, and the anastomotic vessel in the recipient area of patients were recorded. The anastomosis time between manual way and microvascular staplers was recorded and compared. The patency of blood vessels, methods of free transplantation, and follow-up condition were recorded. Data were processed with Wilcoxon rank sum test for two independent samples. Results: All the 10 free flaps and skin grafts of 9 patients survived, and all the wounds were closed by primary operation. Seven flaps contained two perforators each, and three flaps contained three perforators each. The anastomotic vessels were posterior tibial vessels in 6 recipient areas and anterior tibial vessels in 4 recipient areas. Microvascular stapler was used to anastomose 12 veins, while 8 veins and 10 arteries were anstomosed manually. The time consumed by the former method was 4.00 (3.55, 4.38) min, significantly shorter than 12.80 (12.13, 13.40) min of the latter (W=78.00, P<0.01). The patency rates of veins and arteries were 100%. There was no vascular crisis due to vascular anastomosis. Three patients underwent bridge-type cross-over free transplantation, while the others underwent conventional free transplantation. Follow-up for 3 to 30 months showed that the donor site of the thigh had good motor function, without numbness or pain, but hypertrophy of scar could be seen. Four patients had slightly overstaffed flaps transplanted in the recipient area of the lower legs, while the other patients were satisfied with their appearance, and the walking function of the affected limbs gradually recovered. Conclusions: Free anterolateral thigh flap transplantation is a safe and reliable clinical limb salvage method for the repair of large annular soft tissue defect of lower leg after burn. Intraoperative application of microvascular stapler for venous anastomosis can shorten the time of vascular anastomosis and has great clinical application value.
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Affiliation(s)
- C D Xia
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - H P Di
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - P P Xing
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - J D Xue
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - D Y Cao
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - S M Tian
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - L M Wang
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - K Feng
- Department of Burns, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - Y H Zhao
- Department of Burns and Plastic Surgery, the People's Hospital of Jiangyin of Jiangsu Province, Jiangyin 214400, China
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Pan J, Feng K, Chen LL, Li H, Zhu JC, He Y. [Takotsubo syndrome followed with postoperative colon aneurysm: a case report]. Zhonghua Nei Ke Za Zhi 2019; 58:307-309. [PMID: 30917425 DOI: 10.3760/cma.j.issn.0578-1426.2019.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Affiliation(s)
- J Pan
- Health Management Center, Affiliated Hospital of Chengdu University, Chengdu 610081, China
| | - K Feng
- Cardiovascular Department, Affiliated Hospital of Chengdu University, Chengdu 610081, China
| | - L L Chen
- Department of Intensive Care Unit, Affiliated Hospital of Chengdu University, Chengdu 610081, China
| | - H Li
- Department of Intensive Care Unit, Affiliated Hospital of Chengdu University, Chengdu 610081, China
| | - J C Zhu
- Department of Intensive Care Unit, Affiliated Hospital of Chengdu University, Chengdu 610081, China
| | - Y He
- Department of Intensive Care Unit, Affiliated Hospital of Chengdu University, Chengdu 610081, China
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Feng K, Cai Z, Ding T, Yan H, Liu X, Zhang Z. Effects of potassium‐solubulizing and photosynthetic bacteria on tolerance to salt stress in maize. J Appl Microbiol 2019; 126:1530-1540. [DOI: 10.1111/jam.14220] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 02/02/2019] [Accepted: 02/07/2019] [Indexed: 11/29/2022]
Affiliation(s)
- K. Feng
- Department of Biological Technology Institute of Chemistry and Biological Engineering University of Science and Technology Beijing BeijingPeople's Republic of China
| | - Z. Cai
- Department of Biological Technology Institute of Chemistry and Biological Engineering University of Science and Technology Beijing BeijingPeople's Republic of China
| | - T. Ding
- Department of Biological Technology Institute of Chemistry and Biological Engineering University of Science and Technology Beijing BeijingPeople's Republic of China
| | - H. Yan
- Department of Biological Technology Institute of Chemistry and Biological Engineering University of Science and Technology Beijing BeijingPeople's Republic of China
| | - X. Liu
- Department of Biological Technology Institute of Chemistry and Biological Engineering University of Science and Technology Beijing BeijingPeople's Republic of China
| | - Z. Zhang
- Beijing Agro‐Biotechnology Research Center Beijing Academy of Agriculture and Forestry Sciences Beijing People's Republic of China
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Ning YJ, Kang Z, Xing J, Min YQ, Liu D, Feng K, Wang M, Deng F, Zhou Y, Hu Z, Wang H. Ebola virus mucin-like glycoprotein (Emuc) induces remarkable acute inflammation and tissue injury: evidence for Emuc pathogenicity in vivo. Protein Cell 2019; 9:389-393. [PMID: 28956289 PMCID: PMC5876185 DOI: 10.1007/s13238-017-0471-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Affiliation(s)
- Yun-Jia Ning
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Zhenyu Kang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Jingjun Xing
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yuan-Qin Min
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Dan Liu
- School of Medicine, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Kuan Feng
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Manli Wang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Fei Deng
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Yiwu Zhou
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Zhihong Hu
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Hualin Wang
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China.
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Yang T, Luo Q, Feng K, Jin XL, Zhang J. [Expression of Foxm1 in chronic sinusitis and itsrelationship with MUC5AC]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 30:1053-1057. [PMID: 29798037 DOI: 10.13201/j.issn.1001-1781.2016.13.012] [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: 12/13/2015] [Indexed: 11/12/2022]
Abstract
Objective:To explore the expression of Forkhead box protein m1(Foxml) in the sinus mucosa of patients with chronic rhinosinusitis(CRS) and the relationship between Foxm1 and MUC5AC for further understanding of the pathogenesis of CRS.Method:We obtained the sinus mucosa from 25 CRS with polyps(CRSwNP) patients and 25 CRS without polyps (CRSsNP) patients as two experimental groups.Nasal mucosa from 15 normol cases were obtained as control group.We used HE,Periodic acid-schiff staining to observe the histopathological change of each sample.The expression of Foxm1 and MUC5AC were determined by immunohistochemistry(IHC) and qRT-PCR in each group.We also analysed the relationship between Foxm1 and MUC5AC.Result:The HE and PAS staining showed that in the CRSwNP and CRSsNP patients,the main histopathological features was the hyperplasia of goblet cell,inflammatory cell and submucosal gland.IHC showed that Foxm1 and MUC5AC expression were higher in CRSwNP and CRSsNP compared with normal sinus mucosa.qRT-PCR also revealed that Foxm1 and MUC5AC expression was higher in CRSwNP and CRSsNP than in normal mucosa(P<0.05).Foxm1 and MUC5AC had a significant positive correlation.Conclusion:The expressions of Foxm1 and MUC5AC were increased in CRS,and Foxm1 may play an important role in the process of hypersecretion of MUC5AC in CRS.
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Affiliation(s)
- T Yang
- Department of Otorhinolaryngology,Jiangxi Health Vocational College,Nanchang,330052,China
| | - Q Luo
- Department of Otorhinolaryngology-Head and Neck Surgery,the First Affiliated Hospital of Nanchang University
| | - K Feng
- Department of Otorhinolaryngology-Head and Neck Surgery,the First Affiliated Hospital of Nanchang University
| | - X L Jin
- Department of Otorhinolaryngology-Head and Neck Surgery,the First Affiliated Hospital of Nanchang University
| | - J Zhang
- Department of Otorhinolaryngology-Head and Neck Surgery,the First Affiliated Hospital of Nanchang University
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Zhang Y, Feng K, Hu J, Shi L, Wei P, Xu Z, Shen G, Li M, Xu Q, He L. A microRNA-1 gene, tci-miR-1-3p, is involved in cyflumetofen resistance by targeting a glutathione S-transferase gene, TCGSTM4, in Tetranychus cinnabarinus. Insect Mol Biol 2018; 27:352-364. [PMID: 29424082 DOI: 10.1111/imb.12375] [Citation(s) in RCA: 12] [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] [Indexed: 06/08/2023]
Abstract
microRNA-1 (miR-1) is a well-studied conservative microRNA (miRNA) involved in immune responses in mammals and insects. However, little is known about its role in pesticide resistance in arthropods. In this study, we found that a microRNA belong to miR-1 family (tci-miR-1-3p) was significantly down-regulated in a cyflumetofen-resistant strain (CYR) of Tetranychus cinnabarinus compared with its homologous susceptible strain (SS), indicating an involvement of miR-1 in cyflumetofen resistance in mites. One glutathione S-transferase (GST) gene (TCGSTM4, a mu class GST gene), a candidate target gene of tci-miR-1-3p, was found to be significantly down-regulated when tci-miR-1-3p was over-expressed. The specific interaction between tci-miR-1-3p and the target sequence in the 3' untranslated region of TCGSTM4 was confirmed. A decrease or increase in tci-miR-1-3p abundance through feeding miRNA inhibitors or mimics significantly increased or decreased TCGSTM4 expressions at the mRNA and protein levels, respectively. In addition, an over-expression of tci-miR-1-3p resulted in a decrease in the tolerance of T. cinnabarinus to cyflumetofen in both SS and CYR strains, and vice versa. After decreasing TCGSTM4 transcription via RNA interference, T. cinnabarinus became more sensitive to cyflumetofen in both resistant and susceptible mites, and the change in mortality was greater in CYR than that in SS. Moreover, the recombinant TCGSTM4 could significantly decompose cyflumetofen, indicating that TCGSTM4 is a functional gene responsible for cyflumetofen resistance in mites.
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Affiliation(s)
- Y Zhang
- Academy of Agricultural Sciences, College of Plant Protection, Southwest University, Chongqing, China
| | - K Feng
- Academy of Agricultural Sciences, College of Plant Protection, Southwest University, Chongqing, China
| | - J Hu
- Academy of Agricultural Sciences, College of Plant Protection, Southwest University, Chongqing, China
| | - L Shi
- Academy of Agricultural Sciences, College of Plant Protection, Southwest University, Chongqing, China
| | - P Wei
- Academy of Agricultural Sciences, College of Plant Protection, Southwest University, Chongqing, China
| | - Z Xu
- Academy of Agricultural Sciences, College of Plant Protection, Southwest University, Chongqing, China
| | - G Shen
- Academy of Agricultural Sciences, College of Plant Protection, Southwest University, Chongqing, China
| | - M Li
- Department of Entomology, University of California, Riverside, CA, USA
| | - Q Xu
- Department of Biology, Abilene Christian University, Abilene, TX, USA
| | - L He
- Academy of Agricultural Sciences, College of Plant Protection, Southwest University, Chongqing, China
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Abstract
Background Next-generation sequencing (NGS) has revolutionized almost all fields of biology, agriculture and medicine, and is widely utilized to analyse genetic variation. Over the past decade, the NGS pipeline has been steadily improved, and the entire process is currently relatively straightforward. However, NGS instrumentation still requires upfront library preparation, which can be a laborious process, requiring significant hands-on time. Herein, we present a simple but robust approach to streamline library preparation by utilizing surface bound transposases to construct DNA libraries directly on a flowcell surface. Results The surface bound transposases directly fragment genomic DNA while simultaneously attaching the library molecules to the flowcell. We sequenced and analysed a Drosophila genome library generated by this surface tagmentation approach, and we showed that our surface bound library quality was comparable to the quality of the library from a commercial kit. In addition to the time and cost savings, our approach does not require PCR amplification of the library, which eliminates potential problems associated with PCR duplicates. Conclusions We described the first study to construct libraries directly on a flowcell. We believe our technique could be incorporated into the existing Illumina sequencing pipeline to simplify the workflow, reduce costs, and improve data quality.
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Affiliation(s)
- Kuan Feng
- Chemistry and Chemical Biology, University of New Mexico, Albuquerque, NM, 87131, USA
| | - Justin Costa
- Special Projects, Centrillion Technologies, Palo Alto, CA, 94303, USA
| | - Jeremy S Edwards
- Chemistry and Chemical Biology, University of New Mexico, Albuquerque, NM, 87131, USA. .,Internal Medicine, Chemical and Biological Engineering, University of New Mexico, Albuquerque, NM, 87131, USA. .,University of New Mexico Comprehensive Cancer Center, Albuquerque, NM, 87131, USA. .,University of New Mexico Health Sciences Center, Albuquerque, NM, 87131, USA.
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Du A, Huang S, Zhao X, Feng K, Zhang S, Huang J, Miao X, Baggi F, Ostrom RS, Zhang Y, Chen X, Xu C. Suppression of CHRN endocytosis by carbonic anhydrase CAR3 in the pathogenesis of myasthenia gravis. Autophagy 2017; 13:1981-1994. [PMID: 28933591 PMCID: PMC5788490 DOI: 10.1080/15548627.2017.1375633] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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: 12/21/2022] Open
Abstract
Myasthenia gravis is an autoimmune disorder of the neuromuscular junction manifested as fatigable muscle weakness, which is typically caused by pathogenic autoantibodies against postsynaptic CHRN/AChR (cholinergic receptor nicotinic) in the endplate of skeletal muscle. Our previous studies have identified CA3 (carbonic anhydrase 3) as a specific protein insufficient in skeletal muscle from myasthenia gravis patients. In this study, we investigated the underlying mechanism of how CA3 insufficiency might contribute to myasthenia gravis. Using an experimental autoimmune myasthenia gravis animal model and the skeletal muscle cell C2C12, we find that inhibition of CAR3 (the mouse homolog of CA3) promotes CHRN internalization via a lipid raft-mediated pathway, leading to accelerated degradation of postsynaptic CHRN. Activation of CAR3 reduces CHRN degradation by suppressing receptor endocytosis. CAR3 exerts this effect by suppressing chaperone-assisted selective autophagy via interaction with BAG3 (BCL2-associated athanogene 3) and by dampening endoplasmic reticulum stress. Collectively, our study illustrates that skeletal muscle cell CAR3 is critical for CHRN homeostasis in the neuromuscular junction, and its deficiency leads to accelerated degradation of CHRN and development of myasthenia gravis, potentially revealing a novel therapeutic approach for this disorder.
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Affiliation(s)
- Ailian Du
- a Department of Neurology, Tongren Hospital , Shanghai Jiao Tong University School of Medicine (SJTUSM) , Shanghai , China
| | - Shiqian Huang
- b Shanghai Institute of Immunology, Institutes of Medical Sciences , Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - Xiaonan Zhao
- b Shanghai Institute of Immunology, Institutes of Medical Sciences , Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - Kuan Feng
- c Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & SJTUSM , Shanghai , China
| | - Shuangyan Zhang
- b Shanghai Institute of Immunology, Institutes of Medical Sciences , Shanghai Jiao Tong University School of Medicine , Shanghai , China
| | - Jiefang Huang
- c Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & SJTUSM , Shanghai , China
| | - Xiang Miao
- c Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & SJTUSM , Shanghai , China
| | - Fulvio Baggi
- d Neurology IV-Neuroimmunology and Neuromuscular Diseases Unit, Fondazione Istituto Neurologico "Carlo Besta" , Milan , Italy
| | - Rennolds S Ostrom
- e Department of Biomedical and Pharmaceutical Sciences , Chapman University School of Pharmacy , Irvine , CA , USA
| | - Yanyun Zhang
- b Shanghai Institute of Immunology, Institutes of Medical Sciences , Shanghai Jiao Tong University School of Medicine , Shanghai , China.,c Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & SJTUSM , Shanghai , China
| | - Xiangjun Chen
- f Department of Neurology , Fudan University Huashan Hospital, and Institute of Neurology, Fudan University , Shanghai , China
| | - Congfeng Xu
- b Shanghai Institute of Immunology, Institutes of Medical Sciences , Shanghai Jiao Tong University School of Medicine , Shanghai , China.,c Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & SJTUSM , Shanghai , China
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Ning YJ, Feng K, Min YQ, Deng F, Hu Z, Wang H. Heartland virus NSs protein disrupts host defenses by blocking the TBK1 kinase-IRF3 transcription factor interaction and signaling required for interferon induction. J Biol Chem 2017; 292:16722-16733. [PMID: 28848048 DOI: 10.1074/jbc.m117.805127] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [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: 07/03/2017] [Revised: 08/21/2017] [Indexed: 12/19/2022] Open
Abstract
Heartland virus (HRTV) is a pathogenic phlebovirus related to the severe fever with thrombocytopenia syndrome virus (SFTSV), another phlebovirus causing life-threatening disease in humans. Previous findings have suggested that SFTSV can antagonize the host interferon (IFN) system via viral nonstructural protein (NSs)-mediated sequestration of antiviral signaling proteins into NSs-induced inclusion bodies. However, whether and how HRTV counteracts the host innate immunity is unknown. Here, we report that HRTV NSs (HNSs) also antagonizes IFN and cytokine induction and bolsters viral replication, although no noticeable inclusion body formation was observed in HNSs-expressing cells. Furthermore, HNSs inhibited the virus-triggered activation of IFN-β promoter by specifically targeting the IFN-stimulated response element but not the NF-κB response element. Consistently, HNSs blocked the phosphorylation and nuclear translocation of IFN regulatory factor 3 (IRF3, an IFN-stimulated response element-activating transcription factor). Reporter gene assays next showed that HNSs blockades the antiviral signaling mediated by RIG-I-like receptors likely at the level of TANK-binding kinase 1 (TBK1). Indeed, HNSs strongly interacts with TBK1 as indicated by confocal microscopy and pulldown analyses, and we also noted that the scaffold dimerization domain of TBK1 is required for the TBK1-HNSs interaction. Finally, pulldown assays demonstrated that HNSs expression dose-dependently diminishes a TBK1-IRF3 interaction, further explaining the mechanism for HNSs function. Collectively, these data suggest that HNSs, an antagonist of host innate immunity, interacts with TBK1 and thereby hinders the association of TBK1 with its substrate IRF3, thus blocking IRF3 activation and transcriptional induction of the cellular antiviral responses.
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Affiliation(s)
- Yun-Jia Ning
- From the State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China and
| | - Kuan Feng
- From the State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China and.,University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuan-Qin Min
- From the State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China and
| | - Fei Deng
- From the State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China and
| | - Zhihong Hu
- From the State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China and
| | - Hualin Wang
- From the State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan 430071, China and
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Dang Z, Fu Y, Duo H, Fan H, Qiao Z, Guo Z, Feng K, Chui W, Shen X, Geng Qiu J, Ni M, He S, Zhao H, Peng M, Xiao N, Nonaka N, Nasu T, Huang F, Oku Y, Hayashimoto N, Hu W, Li W. An epidemiological survey of echinococcosis in intermediate and definitive hosts in Qinghai Province, China. Trop Biomed 2017; 34:483-490. [PMID: 33593033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In order to understand the epidemiological status of alveolar and cystic echinococcosis in intermediate and definitive hosts in Qinghai Province, China, during the period 2007-2011, we investigated the infection in humans and animals, including yaks, Tibetan sheep, Tibetan dogs, and wild foxes distributed in different counties around the province. Sera from local residents were examined using a rapid serodiagnostic kit to detect specific antibodies against Echinococcus. Seropositive samples were confirmed with B-scan ultrasonography and X-ray examinations. Yaks and Tibetan sheep were checked at slaughterhouses, and cysts and suspicious lesions were collected for analysis. A rapid diagnostic strip was used to detect Echinococcus adults in Tibetan dogs. Positive dogs were dewormed and the parasites collected. Wild foxes were trapped and necropsies performed with particular attention to the intestine. Forty-eight of 735 (6.4%) humans tested were positive and 475 of 854 (55.6%) Tibetan sheep and 85 of 352 (24.15%) yaks were infected with Echinococcus. Across different counties, 214 of 948 (22.57%) Tibetan dogs were positive, and five of 36 (13.9%) wild foxes were infected with Echinococcus. Molecular studies showed that all the infections detected in humans, domestic yaks, and Tibetan sheep were the G1 genotype (E. granulosus), whereas the parasites from Tibetan foxes and Tibetan dogs were E. shiquicus and E. multilocularis, respectively. In conclusion, Echinococcosis is hyperendemic in Qinghai Province in both its intermediate and definitive hosts and the G1 genotype of cystic Echinococcus is the dominant strain.
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Affiliation(s)
- Z Dang
- Key Laboratory on Biology of Parasite and Vector, Ministry of Health, Shanghai, China; National Center for International Research on Tropical Diseases, Shanghai, China; WHO Collaborating Center for Tropical Diseases, Shanghai, China; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai 200025, China
| | - Y Fu
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - H Duo
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - H Fan
- Affiliated Hospital of Qinghai University, Xining 810016, China
| | - Z Qiao
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - Z Guo
- Key Laboratory on Biology of Parasite and Vector, Ministry of Health, Shanghai, China; National Center for International Research on Tropical Diseases, Shanghai, China; WHO Collaborating Center for Tropical Diseases, Shanghai, China; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai 200025, China
- Affiliated Hospital of Qinghai University, Xining 810016, China
| | - K Feng
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
- Laboratory of Veterinary Parasitic Diseases, Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - W Chui
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - X Shen
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - J Geng Qiu
- Zhen Qin Township Veterinary Station, Chengduo 815100, China
| | - M Ni
- Haiyan Veterinary Stations, Haiyan 812200, China
| | - S He
- Haiyan Veterinary Stations, Haiyan 812200, China
| | - H Zhao
- Medical College of Qinghai University, Xining 810016, China
| | - M Peng
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
| | - N Xiao
- Key Laboratory on Biology of Parasite and Vector, Ministry of Health, Shanghai, China; National Center for International Research on Tropical Diseases, Shanghai, China; WHO Collaborating Center for Tropical Diseases, Shanghai, China; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai 200025, China
| | - N Nonaka
- Laboratory of Veterinary Parasitic Diseases, Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - T Nasu
- Laboratory of Veterinary Parasitic Diseases, Department of Veterinary Sciences, Faculty of Agriculture, University of Miyazaki, Miyazaki 889-2192, Japan
| | - F Huang
- Parasitology Laboratory, School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
| | - Y Oku
- Parasitology Laboratory, School of Veterinary Medicine, Faculty of Agriculture, Tottori University, Tottori 680-8553, Japan
| | - N Hayashimoto
- ICLAS Monitoring Center, Central Institute for Experimental Animals, 3-25-12 Tonomachi, Kawasaki, Kanagawa 210-0821, Japan
| | - W Hu
- Key Laboratory on Biology of Parasite and Vector, Ministry of Health, Shanghai, China; National Center for International Research on Tropical Diseases, Shanghai, China; WHO Collaborating Center for Tropical Diseases, Shanghai, China; National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai 200025, China
| | - W Li
- Academy of Animal and Veterinary Medicine, Qinghai University of Animal and Veterinary Sciences, Xining 810016, China
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Feng K, Guo HK, Zhang YL, Wu Z. [Visual quality comparison after multifocal toric intraocular lens or monofocal toric intraocular lens implantation]. Zhonghua Yan Ke Za Zhi 2017; 53:274-280. [PMID: 28412800 DOI: 10.3760/cma.j.issn.0412-4081.2017.04.009] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare visual quality and satisfaction after multifocal toric intraocular lens (Acrysof IQ Restor toric, ART) and monofocal toric intraocular lens implantation in patients. Methods: It was a prospective nonrandomized Phase Ⅲ clinical trial. Patients with age-related cataract and corneal astigmatism were enrolled and accepted phacoemulsification combined with implantation of intraocular lens (IOL) in Henan Provincial Eye Hospital during March 2013 to December 2014. Fifty-six cases were divided into two groups according to which IOL they chose. ART group included 28 cases (3l eyes) aged from 41.0 to 72.0 years, with an average age of 61.5 years; toric group included 28 cases (33 eyes) aged from 42.0 to 75.0 years, with an average age of 63.5 years. Three months postoperatively, uncorrected distance visual acuity (UDVA) at 5, 70, 40 cm, corrected distance, intermediate, and near visual acuities, defocus curve, residual refractive astigmatism, rotational stability of the IOL, contrast sensitivity and patientsatisfaction were evaluated. All data were processed by statistic package deal SPSS 16.0. Postoperative visual acuity, residual astigmatism, IOL axial rotation and contrast sensitivity were compared by independent samples t test; preoperative and postoperative corneal astigmatism were compared by paired t-test; spectacle independency and halo incidence were processed by χ(2) test; visual satisfaction score was analyzed by Mann-Whitney test. Results: At 3 months postoperatively, in ART group, UDVA was (0.04±0.05), UIVA was (0.24±0.15), UNVA was (0.20±0.24). While in Toric group, UDVA was (0.06±0.04), UIVA was (0.30±0.13), UNVA was (0.47±0.21). There was no significant difference in UDVA between two groups(t=0.79, P=0.433). But in ART group, UIVA and UNVA were markedly better than those in Toric group(t=2.74, P=0.008; t=3.45, P<0.01). Depth of focus was 5.50 D (+2.00--3.50 D) in the ART group and 2.50 D (+1.00--1.50 D) in the Toric group. Average postoperative residual astigmatism was (-0.45±0.41)D in ART group and (-0.41±0.32)D in the Toric group. There was no significant difference between two groups (t=1.05, P=0.304). Average IOL rotation test was (2.95°±1.34°) in the ART group and (2.75°±1.64°) in the Toric group. There was no significant difference between two groups (t=0.67, P=0.452). Spectacle independency was achieved by 85.7% of patients in the ART group and 32.1% in the Toric group. There was no signifcant difference in distant visual satisfaction scores between the two groups(Z=0.71, P>0.05), while the intermediate and near visual satisfaction scores were significantly different(Z=2.27, P<0.05; Z=2.60, P<0.05) Conclusions: Both of the ART IOL and toric IOL can correct patients astigmatism. Implantation of ART IOL in patients with cataract and corneal astigmatism provided excellent distance, intermediate, and near visual outcomes. It provided better predictability of the refractive results, nice rotational stability, and good optical performance. At the same time, it improved the spectacle independency of cataract patients with astigmatism. (Chin J Ophthalmol, 2017, 53: 274-280).
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Affiliation(s)
- K Feng
- Henan Eye Hospital, Zhengzhou 450000, China
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Zhang P, Feng K, Xue Y, Zhang CX, Wang Y, Li XL. Clinical applications of haploidentical hematopoietic stem cell transplantation in severe aplastic anemia. Eur Rev Med Pharmacol Sci 2017; 21:155-161. [PMID: 28121342] [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: 06/06/2023]
Abstract
OBJECTIVE The purpose of this study was to investigate the efficacy and safety of haploidentical allogeneic hemopoietic stem cell transplantation (allo-HSCT) in severe aplastic anemia (SAA) and prophylaxis of complications involved. PATIENTS AND METHODS 8 patients with clinically diagnosed SAA (5 cases of SAA-I and 3 cases of SAA-II) were recruited, with the parents as the donors of hemopoietic stem cells. The conditioning regimen before HSCT included cyclophosphamide, fludarabine, pig anti-human lymphocyte immune globulin (p-ALG) and/or total body irradiation (TBI). The recipients received short-term methotrexate (MTX), mycophenolate mofetil (MMF), and cyclosporin A (CsA) for graft versus host disease (GVHD) prophylaxis. Subsequent to successful allo-HSCT, the hematopoietic reconstitution was observed, coupled with periodical surveillance of the chimerism rate, the occurrence, and severity of postoperative complications as infection, GVHD, veno-occlusive disease (VOD), hemorrhagic cystitis (HC), cytomegalovirus (CMV) as well as the long-term survival rate, etc. RESULTS We found that hematopoietic reconstruction was achieved in all of the 8 patients with the average time of 14.8d for absolute neutrophil count (ANC) > 0.5×109/L, and the average time of 15.0d for platelet count was more than 20×109/L. Follow-up for 1 month later revealed that DNA chimeric rate of donor cells was 95%-100%. The complications were aGVHD in 7 cases including 5 cases of grade I-II (62.5%), 1 case of grade III (12.5%) and 1 case of grade IV (12.5%), as well as chronic graft versus host disease (cGVHD) in 2 patients, including 1 case (12.5%) localized in the oral cavity and 1 case (12.5%) with extensive type cGVHD in the whole body skin. No VOD or HC was observed, and no transplantation-related death occurred at median following-up of 8.5 months (2 to 18 months). CONCLUSIONS Allo-HSCT is safe and effective in patients with SAA and has great clinical perspective.
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Affiliation(s)
- P Zhang
- Department of Hematology, The Affiliated XuZhou Hospital of Medical College of Southeast University, Xuzhou Central Hospital, Xuzhou, Jiangsu Province, China.
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Xu C, Feng K, Zhao X, Huang S, Cheng Y, Qian L, Wang Y, Sun H, Jin M, Chuang TH, Zhang Y. Regulation of autophagy by E3 ubiquitin ligase RNF216 through BECN1 ubiquitination. Autophagy 2015; 10:2239-50. [PMID: 25484083 PMCID: PMC4502788 DOI: 10.4161/15548627.2014.981792] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [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] [Indexed: 12/27/2022] Open
Abstract
Autophagy is an evolutionarily conserved biological process involved in an array of physiological and pathological events. Without proper control, autophagy contributes to various disorders, including cancer and autoimmune and inflammatory diseases. It is therefore of vital importance that autophagy is under careful balance. Thus, additional regulators undoubtedly deepen our understanding of the working network, and provide potential therapeutic targets for disorders. In this study, we found that RNF216 (ring finger protein 216), an E3 ubiquitin ligase, strongly inhibits autophagy in macrophages. Further exploration demonstrates that RNF216 interacts with BECN1, a key regulator in autophagy, and leads to ubiquitination of BECN1, thereby contributing to BECN1 degradation. RNF216 was involved in the ubiquitination of lysine 48 of BECN1 through direct interaction with the triad (2 RING fingers and a DRIL [double RING finger linked]) domain. We further showed that inhibition of autophagy through overexpression of RNF216 in alveolar macrophages promotes Listeria monocytogenes growth and distribution, while knockdown of RNF216 significantly inhibited these outcomes. These effects were confirmed in a mouse model of L. monocytogenes infection, suggesting that manipulating RNF216 expression could be a therapeutic approach. Thus, our study identifies a novel negative regulator of autophagy and suggests that RNF216 may be a target for treatment of inflammatory diseases.
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Key Words
- Atg, autophagy-related
- BALF, bronchoalveolar lavage fluid
- BECN1
- BMDM, bone marrow-derived macrophage
- CFU, colony-forming unit
- GFP, green fluorescent protein
- HRP, horseradish peroxidase
- LPS, lipopolysaccharide
- MAP1LC3A, microtubule-associated protein 1 light chain 3 α
- MOI, multiplicity of infection
- NFKB, nuclear factor of kappa light polypeptide gene enhancer in B-cells
- PBS, phosphate-buffered saline
- RIPK1, receptor (TNFRSF)-interacting serine-threonine kinase 1
- RNF216
- RNF216, ring finger protein 216;TIRAP, toll-interleukin 1 receptor (TIR) domain containing adaptor protein
- TICAM1/TRIF, toll-like receptor adaptor molecule 1
- TICAM2, toll-like receptor adaptor molecule 2
- TLR, toll-like receptor
- TNF, tumor necrosis factor
- TRAF, TNF receptor-associated factor
- Triad, 2 RING fingers and a DRIL (double RING finger linked)
- Ub, ubiquitin
- autophagy
- i.t., intratracheally
- protein degradation
- shRNA, short hairpin RNA
- ubiquitination
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Affiliation(s)
- Congfeng Xu
- a Shanghai Institute of Immunology; Institutes of Medical Sciences; Shanghai Jiao Tong University School of Medicine (SJTUSM); and Key Laboratory of Stem Cell Biology; Institute of Health Sciences; Shanghai Institutes for Biological Sciences; Chinese Academy of Sciences & SJTUSM ; Shanghai , China
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Feng K, Streyer W, Zhong Y, Hoffman AJ, Wasserman D. Photonic materials, structures and devices for Reststrahlen optics. Opt Express 2015; 23:A1418-A1433. [PMID: 26698791 DOI: 10.1364/oe.23.0a1418] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present a review of existing and potential next-generation far-infrared (20-60 μm) optical materials and devices. The far-infrared is currently one of the few remaining frontiers on the optical spectrum, a space underdeveloped and lacking in many of the optical and optoelectronic materials and devices taken for granted in other, more technologically mature wavelength ranges. The challenges associated with developing optical materials, structures, and devices at these wavelengths are in part a result of the strong phonon absorption in the Reststrahlen bands of III-V semiconductors that collectively span the far-infrared. More than just an underexplored spectral band, the far-IR may also be of potential importance for a range of sensing applications in astrochemistry, biology, and industrial and geological processes. Additionally, with a suitable far-IR optical infrastructure, it is conceivable that even more applications could emerge. In this review, we will present recent progress on far-infrared materials and phenomena such as phononic surface modes, engineered composite materials, and optoelectronic devices that have the potential to serve as the next generation of components in a far-infrared optical tool-kit.
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Cai W, Du A, Feng K, Zhao X, Qian L, Ostrom RS, Xu C. Adenylyl cyclase 6 activation negatively regulates TLR4 signaling through lipid raft-mediated endocytosis. J Immunol 2013; 191:6093-100. [PMID: 24218452 DOI: 10.4049/jimmunol.1301912] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Proper intracellular localization of TLRs is essential for their signaling and biological function. Endocytosis constitutes a key step in protein turnover, as well as maintenance of TLR localization in plasma membrane and intracellular compartments, and thus provides important regulating points to their signaling. In this study, we demonstrate that adenylyl cyclase (AC) activation attenuates TLR4 signaling in a murine macrophage cell line (RAW 264.7) and bone marrow-derived macrophages when stimulated with LPS. We further show that the AC6 isoform plays a key role in negative regulation of TLR4 signaling by promoting protein degradation. TLR4 is normally endocytosed through the clathrin-mediated pathway, but concomitant AC6 activation shifts it to lipid raft-mediated endocytosis, which accelerates degradation of TLR4 and suppresses downstream signaling. Our studies unveil a new mechanism of negative regulation of TLR4 signaling through AC6-mediated endocytosis, which might provide a novel therapeutic approach for limiting inflammatory and autoimmune diseases.
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Affiliation(s)
- Wei Cai
- Shanghai Institute of Immunology, Institutes of Medical Sciences, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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Abstract
BACKGROUND Angiocidin plays a key role in angiogenesis and tumor progression. High angiocidin expression is detected in some kind of solid tumors and tumor vascular endothelial cells. Several reports have shown the inhibition of angiogenesis and tumor growth caused by angiocidin. However, the role of angiocidin in liver cancers growth is still unclear. OBJECTIVES To examine angiocidin expression in SMMC-7221 and HepG2 cells and the role of angiocidin in liver cancer cell growth. METHODS RT-PCR and western blot are used in this study to detect angiocidin expression. SiRNA and MTT experiments are used in exploring the role of angiocidin in tumor cell growth. RESULTS Our study showed high angiocidin expression in two kinds of liver cancer cells. Angiocidin protein production in HepG2 cells were reduced significantly by siRNA. When HepG2 cells were transfected with siRNA-angiocidin, these cells showed very low proliferation activity compared with control cells. Our study suggests that reduction of angiocidin may contribute to decreased proliferation activity in liver cancer cells. CONCLUSION Angiocidin is highly expressed in liver cancer cells, and it may play a key role in tumor growth of liver cancers.
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Affiliation(s)
- X G Guan
- Life Science Research Center, Beihua University, Jilin, Jilin Province, China
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Ping HC, Feng K, Zhang GR, Wei KJ, Zou GW, Wang WM. Ontogeny expression of ghrelin, neuropeptide Y and cholecystokinin in blunt snout bream, Megalobrama amblycephala. J Anim Physiol Anim Nutr (Berl) 2013; 98:338-46. [DOI: 10.1111/jpn.12084] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 04/16/2013] [Indexed: 12/14/2022]
Affiliation(s)
- H.-C. Ping
- Key Laboratory of Freshwater Animal Breeding; Ministry of Agriculture; College of Fisheries; Huazhong Agricultural University; Wuhan China
| | - K. Feng
- Key Laboratory of Freshwater Animal Breeding; Ministry of Agriculture; College of Fisheries; Huazhong Agricultural University; Wuhan China
| | - G.-R. Zhang
- Key Laboratory of Freshwater Animal Breeding; Ministry of Agriculture; College of Fisheries; Huazhong Agricultural University; Wuhan China
| | - K.-J. Wei
- Key Laboratory of Freshwater Animal Breeding; Ministry of Agriculture; College of Fisheries; Huazhong Agricultural University; Wuhan China
| | - G.-W. Zou
- Key Laboratory of Freshwater Biodiversity Conservation; Ministry of Agriculture; Yangtze River Fisheries Research Institute; Chinese Academy of Fishery Sciences; Wuhan China
| | - W.-M. Wang
- Key Laboratory of Freshwater Animal Breeding; Ministry of Agriculture; College of Fisheries; Huazhong Agricultural University; Wuhan China
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