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  1. Article: Epidemiological characteristics of

    Zhu, Jiaying / Ju, Yanmin / Zhou, Xinyu / Chen, Taoyu / Zhuge, Xiangkai / Dai, Jianjun

    Frontiers in microbiology

    2023  Volume 14, Page(s) 1219733

    Abstract: Carbapenem- ... ...

    Abstract Carbapenem-resistant
    Language English
    Publishing date 2023-07-19
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2587354-4
    ISSN 1664-302X
    ISSN 1664-302X
    DOI 10.3389/fmicb.2023.1219733
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Extracellular vesicles produced by avian pathogenic Escherichia coli (APEC) activate macrophage proinflammatory response and neutrophil extracellular trap (NET) formation through TLR4 signaling.

    Wang, Zhongxing / Zhu, Dongyu / Zhang, Yuting / Xia, Fufang / Zhu, Jiaying / Dai, Jianjun / Zhuge, Xiangkai

    Microbial cell factories

    2023  Volume 22, Issue 1, Page(s) 177

    Abstract: Background: Avian pathogenic Escherichia coli (APEC) is the major pathogen causing important avian diseases in poultry. As an important subtype of extraintestinal pathogenic E. coli, APEC has zoonotic potential and is considered a foodborne pathogen. ... ...

    Abstract Background: Avian pathogenic Escherichia coli (APEC) is the major pathogen causing important avian diseases in poultry. As an important subtype of extraintestinal pathogenic E. coli, APEC has zoonotic potential and is considered a foodborne pathogen. APEC extracellular vesicles (EVs) may play vital roles in the interaction of the pathogen with its host cells. However, the precise roles played by APEC EVs are still not completely clear, especially in immune cells.
    Results: In this study, we investigated the relationships between APEC EVs and immune cells. The production and characteristics of the EVs of APEC isolate CT265 were identified. Toll like receptor 4 (TLR4) triggered the cellular immune responses when it interacted with APEC EVs. APEC EVs induced a significant release of proinflammatory cytokines in THP-1 macrophages. APEC EVs induced the macrophage inflammatory response via the TLR4/MYD88/NF-κB signaling pathway, which participated in the activation of the APEC-EV-induced NLRP3 inflammasome. However, the loss of lipopolysaccharide (LPS) from APEC EVs reduced the activation of the NLRP3 inflammasome mediated by TLR4/MYD88/NF-κB signaling. Because APEC EVs activated the macrophage inflammatory response and cytokines release, we speculated that the interaction between APEC EVs and macrophages activated and promoted neutrophil migration during APEC extraintestinal infection. This study is the first to report that APEC EVs induce the formation of neutrophil extracellular traps (NETs) and chicken heterophil extracellular traps. Treatment with APEC EVs induced SAPK/JNK activation in neutrophils. The inhibition of TLR4 signaling suppressed APEC-EV-induced NET formation. However, although APEC EVs activated the immune response of macrophages and initiated NET formation, they also damaged macrophages, causing their apoptosis. The loss of LPS from APEC EVs did not prevent this process.
    Conclusion: APEC-derived EVs induced inflammatory responses in macrophages and NETs in neutrophils, and that TLR4 was involved in the APEC-EV-activated inflammatory response. These findings provided a basis for the further study of APEC pathogenesis.
    MeSH term(s) Humans ; Extracellular Traps ; Escherichia coli ; Toll-Like Receptor 4 ; NF-kappa B ; Inflammasomes ; Lipopolysaccharides ; Myeloid Differentiation Factor 88 ; NLR Family, Pyrin Domain-Containing 3 Protein ; Signal Transduction ; Extracellular Vesicles ; Adaptor Proteins, Signal Transducing ; Escherichia coli Infections/veterinary
    Chemical Substances Toll-Like Receptor 4 ; NF-kappa B ; Inflammasomes ; Lipopolysaccharides ; Myeloid Differentiation Factor 88 ; NLR Family, Pyrin Domain-Containing 3 Protein ; Adaptor Proteins, Signal Transducing ; TLR4 protein, human
    Language English
    Publishing date 2023-09-09
    Publishing country England
    Document type Journal Article
    ZDB-ID 2091377-1
    ISSN 1475-2859 ; 1475-2859
    ISSN (online) 1475-2859
    ISSN 1475-2859
    DOI 10.1186/s12934-023-02171-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Genomics Analysis to Identify Multiple Genetic Determinants That Drive the Global Transmission of the Pandemic ST95 Lineage of Extraintestinal Pathogenic

    Xia, Fufang / Cheng, Jinlong / Jiang, Min / Wang, Zhongxing / Wen, Zhe / Wang, Min / Ren, Jianluan / Zhuge, Xiangkai

    Pathogens (Basel, Switzerland)

    2022  Volume 11, Issue 12

    Abstract: Extraintestinal ... ...

    Abstract Extraintestinal pathogenic
    Language English
    Publishing date 2022-12-07
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2695572-6
    ISSN 2076-0817
    ISSN 2076-0817
    DOI 10.3390/pathogens11121489
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: A Potential Nontraditional Approach To Combat

    Wang, Xiaoming / Liu, Ting / Lv, Xi / Sun, Naiyan / Li, Fan / Luo, Lei / Zhuge, Xiangkai / Huang, Jinhu / Wang, Liping

    Antimicrobial agents and chemotherapy

    2023  Volume 67, Issue 7, Page(s) e0004723

    Abstract: The emergence of TMexCD1-TOprJ1, a novel transferable resistance-nodulation-division (RND)-type efflux pump conferring resistance to tigecycline, is now a serious public health issue in the world. Here, we found that melatonin synergistically enhanced ... ...

    Abstract The emergence of TMexCD1-TOprJ1, a novel transferable resistance-nodulation-division (RND)-type efflux pump conferring resistance to tigecycline, is now a serious public health issue in the world. Here, we found that melatonin synergistically enhanced the antibacterial efficacy of tigecycline against
    MeSH term(s) Animals ; Mice ; Tigecycline/pharmacology ; Melatonin/pharmacology ; Melatonin/metabolism ; Minocycline/pharmacology ; Klebsiella Infections/drug therapy ; Klebsiella Infections/microbiology ; Drug Resistance, Bacterial/genetics ; Membrane Transport Proteins/genetics ; Anti-Bacterial Agents/therapeutic use ; Adjuvants, Immunologic ; Adjuvants, Pharmaceutic ; Microbial Sensitivity Tests ; Klebsiella pneumoniae/genetics ; Klebsiella pneumoniae/metabolism
    Chemical Substances Tigecycline (70JE2N95KR) ; Melatonin (JL5DK93RCL) ; Minocycline (FYY3R43WGO) ; Membrane Transport Proteins ; Anti-Bacterial Agents ; Adjuvants, Immunologic ; Adjuvants, Pharmaceutic
    Language English
    Publishing date 2023-06-08
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 217602-6
    ISSN 1098-6596 ; 0066-4804
    ISSN (online) 1098-6596
    ISSN 0066-4804
    DOI 10.1128/aac.00047-23
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: ProQ binding to small RNA RyfA promotes virulence and biofilm formation in avian pathogenic Escherichia coli.

    Wang, Zhongxing / Chen, Rui / Xia, Fufang / Jiang, Min / Zhu, Dongyu / Zhang, Yuting / Dai, Jianjun / Zhuge, Xiangkai

    Veterinary research

    2023  Volume 54, Issue 1, Page(s) 109

    Abstract: Avian pathogenic Escherichia coli (APEC) is a notable subpathotype of the nonhuman extraintestinal pathogenic E. coli (ExPEC). Recognized as an extraintestinal foodborne pathogen, the zoonotic potential of APEC/ExPEC allows for cross-host transmission ... ...

    Abstract Avian pathogenic Escherichia coli (APEC) is a notable subpathotype of the nonhuman extraintestinal pathogenic E. coli (ExPEC). Recognized as an extraintestinal foodborne pathogen, the zoonotic potential of APEC/ExPEC allows for cross-host transmission via APEC-contaminated poultry meat and eggs. ProQ, an RNA binding protein, is evolutionarily conserved in E. coli. However, its regulatory roles in the biofilm formation and virulence of APEC/ExPEC have not been explored. In this study, proQ deletion in the APEC strain FY26 significantly compromised its biofilm-forming ability. Furthermore, animal tests and cellular infection experiments showed that ProQ depletion significantly attenuated APEC virulence, thereby diminishing its capacity for bloodstream infection and effective adherence to and persistence within host cells. Transcriptome analysis revealed a decrease in the transcription level of the small RNA (sRNA) RyfA in the mutant FY26ΔproQ, suggesting a direct interaction between the sRNA RyfA and ProQ. This interaction might indicate that sRNA RyfA is a novel ProQ-associated sRNA. Moreover, the direct binding of ProQ to the sRNA RyfA was crucial for APEC biofilm formation, pathogenicity, adhesion, and intracellular survival. In conclusion, our findings provide detailed insight into the interaction between ProQ and sRNA RyfA and deepen our understanding of the regulatory elements that dictate APEC virulence and biofilm development. Such insights are instrumental in developing strategies to counteract APEC colonization within hosts and impede APEC biofilm establishment on food surfaces.
    MeSH term(s) Animals ; Escherichia coli ; Virulence ; Escherichia coli Infections/veterinary ; Chickens/genetics ; Poultry Diseases/pathology ; Virulence Factors/genetics ; Biofilms ; RNA, Small Untranslated ; Escherichia coli Proteins/genetics ; Escherichia coli Proteins/metabolism ; RNA-Binding Proteins
    Chemical Substances Virulence Factors ; RNA, Small Untranslated ; Escherichia coli Proteins ; ProQ protein, E coli ; RNA-Binding Proteins
    Language English
    Publishing date 2023-11-22
    Publishing country England
    Document type Journal Article
    ZDB-ID 1146298-x
    ISSN 1297-9716 ; 0928-4249
    ISSN (online) 1297-9716
    ISSN 0928-4249
    DOI 10.1186/s13567-023-01241-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Dissemination of virulence and resistance genes among Klebsiella pneumoniae via outer membrane vesicle: An important plasmid transfer mechanism to promote the emergence of carbapenem-resistant hypervirulent Klebsiella pneumoniae.

    Wang, Zhongxing / Wen, Zhe / Jiang, Min / Xia, Fufang / Wang, Min / Zhuge, Xiangkai / Dai, Jianjun

    Transboundary and emerging diseases

    2022  Volume 69, Issue 5, Page(s) e2661–e2676

    Abstract: Klebsiella pneumoniae is well-known opportunistic enterobacteria involved in complex clinical infections in humans and animals. The domestic animals might be a source of the multidrug-resistant virulent K. pneumoniae to humans. K. pneumoniae infections ... ...

    Abstract Klebsiella pneumoniae is well-known opportunistic enterobacteria involved in complex clinical infections in humans and animals. The domestic animals might be a source of the multidrug-resistant virulent K. pneumoniae to humans. K. pneumoniae infections in domestic animals are considered as an emergent global concern. The horizontal gene transfer plays essential roles in bacterial genome evolution by spread of virulence and resistance determinants. However, the virulence genes can be transferred horizontally via K. pneumoniae-derived outer membrane vesicles (OMVs) remains to be unreported. In this study, we performed complete genome sequencing of two K. pneumoniae HvK2115 and CRK3022 with hypervirulent or carbapenem-resistant traits. OMVs from K. pneumoniae HvK2115 and CRK3022 were purified and observed. The carriage of virulence or resistance genes in K. pneumoniae OMVs was identified. The influence of OMVs on the horizontal transfer of virulence-related or drug-resistant plasmids among K. pneumoniae strains was evaluated thoroughly. The plasmid transfer to recipient bacteria through OMVs was identified by polymerase chain reaction, pulsed field gel electrophoresis and Southern blot. This study revealed that OMVs could mediate the intraspecific and interspecific horizontal transfer of the virulence plasmid phvK2115. OMVs could simultaneously transfer two resistance plasmids into K. pneumoniae and Escherichia coli recipient strains. OMVs-mediated horizontal transfer of virulence plasmid phvK2115 could significantly enhance the pathogenicity of human carbapenem-resistant K. pneumoniae CRK3022. The CRK3022 acquired the virulence plasmid phvK2115 could become a CR-hvKp strain. It was critically important that OMVs-mediated horizontal transfer of phvK2115 lead to the coexistence of virulence and carbapenem-resistance genes in K. pneumoniae, resulting in the emerging of carbapenem-resistant hypervirulent K. pneumoniae.
    MeSH term(s) Animals ; Anti-Bacterial Agents/pharmacology ; Anti-Bacterial Agents/therapeutic use ; Carbapenem-Resistant Enterobacteriaceae ; Carbapenems/pharmacology ; Escherichia coli/genetics ; Humans ; Klebsiella Infections/microbiology ; Klebsiella Infections/veterinary ; Klebsiella pneumoniae/genetics ; Plasmids/genetics ; Virulence/genetics ; beta-Lactamases
    Chemical Substances Anti-Bacterial Agents ; Carbapenems ; beta-Lactamases (EC 3.5.2.6)
    Language English
    Publishing date 2022-06-25
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2414822-2
    ISSN 1865-1682 ; 1865-1674
    ISSN (online) 1865-1682
    ISSN 1865-1674
    DOI 10.1111/tbed.14615
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Dissemination of virulence and resistance genes among Klebsiella pneumoniae via outer membrane vesicle: An important plasmid transfer mechanism to promote the emergence of carbapenem‐resistant hypervirulent Klebsiella pneumoniae

    Wang, Zhongxing / Wen, Zhe / Jiang, Min / Xia, Fufang / Wang, Min / Zhuge, Xiangkai / Dai, Jianjun

    Transboundary and emerging diseases. 2022 Sept., v. 69, no. 5

    2022  

    Abstract: Klebsiella pneumoniae is well‐known opportunistic enterobacteria involved in complex clinical infections in humans and animals. The domestic animals might be a source of the multidrug‐resistant virulent K. pneumoniae to humans. K. pneumoniae infections ... ...

    Abstract Klebsiella pneumoniae is well‐known opportunistic enterobacteria involved in complex clinical infections in humans and animals. The domestic animals might be a source of the multidrug‐resistant virulent K. pneumoniae to humans. K. pneumoniae infections in domestic animals are considered as an emergent global concern. The horizontal gene transfer plays essential roles in bacterial genome evolution by spread of virulence and resistance determinants. However, the virulence genes can be transferred horizontally via K. pneumoniae‐derived outer membrane vesicles (OMVs) remains to be unreported. In this study, we performed complete genome sequencing of two K. pneumoniae HvK2115 and CRK3022 with hypervirulent or carbapenem‐resistant traits. OMVs from K. pneumoniae HvK2115 and CRK3022 were purified and observed. The carriage of virulence or resistance genes in K. pneumoniae OMVs was identified. The influence of OMVs on the horizontal transfer of virulence‐related or drug‐resistant plasmids among K. pneumoniae strains was evaluated thoroughly. The plasmid transfer to recipient bacteria through OMVs was identified by polymerase chain reaction, pulsed field gel electrophoresis and Southern blot. This study revealed that OMVs could mediate the intraspecific and interspecific horizontal transfer of the virulence plasmid phvK2115. OMVs could simultaneously transfer two resistance plasmids into K. pneumoniae and Escherichia coli recipient strains. OMVs‐mediated horizontal transfer of virulence plasmid phvK2115 could significantly enhance the pathogenicity of human carbapenem‐resistant K. pneumoniae CRK3022. The CRK3022 acquired the virulence plasmid phvK2115 could become a CR‐hvKp strain. It was critically important that OMVs‐mediated horizontal transfer of phvK2115 lead to the coexistence of virulence and carbapenem‐resistance genes in K. pneumoniae, resulting in the emerging of carbapenem‐resistant hypervirulent K. pneumoniae.
    Keywords Escherichia coli ; Klebsiella pneumoniae ; Southern blotting ; evolution ; genome ; horizontal gene transfer ; humans ; multiple drug resistance ; plasmids ; polymerase chain reaction ; virulence
    Language English
    Dates of publication 2022-09
    Size p. e2661-e2676.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note JOURNAL ARTICLE
    ZDB-ID 2414822-2
    ISSN 1865-1682 ; 1865-1674
    ISSN (online) 1865-1682
    ISSN 1865-1674
    DOI 10.1111/tbed.14615
    Database NAL-Catalogue (AGRICOLA)

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  8. Article ; Online: Characterization of antimicrobial resistance in chicken-source phylogroup F Escherichia coli: similar populations and resistance spectrums between E. coli recovered from chicken colibacillosis tissues and retail raw meats in Eastern China.

    Wang, Min / Jiang, Min / Wang, Zhongxing / Chen, Rui / Zhuge, Xiangkai / Dai, Jianjun

    Poultry science

    2021  Volume 100, Issue 9, Page(s) 101370

    Abstract: The extended-spectrum cephalosporin resistant E. coli from food animals transferring to community settings of humans causes a serious threat to public health. Unlike phylogroup B2 E. coli strains, the clinical significance of isolates in phylogroup F is ... ...

    Abstract The extended-spectrum cephalosporin resistant E. coli from food animals transferring to community settings of humans causes a serious threat to public health. Unlike phylogroup B2 E. coli strains, the clinical significance of isolates in phylogroup F is not well revealed. Here, we report on a collection (n = 563) of phylogroup F E. coli isolates recovered from chicken colibacillosis tissues and retail raw chicken meat samples in Eastern China. There was an overlapped distribution of MLST types between chicken colibacillosis-origin and meat-source phylogroup F E. coli, including dominant STs (ST648, ST405, ST457, ST393, ST1158, etc). This study further investigated the presence of extended-spectrum β-lactamase (ESBL/pAmpC) producers in these chicken-source phylogroup F E. coli strains. The prevalence of extended-spectrum cephalosporin resistant strains in phylogroup F E. coli from chicken colibacillosis and raw meat separately accounted for 66.1 and 71.2%. The resistance genotypes and plasmid replicon types of chicken-source phylogroup F E. coli isolates were characterized by multiplex PCR. Our results revealed β-lactamase CTX-M, OXA, CMY and TEM genes were widespread in chicken-source phylogroup F E. coli, and blaCTX-M was the most predominant ESBL gene. Moreover, there was a high prevalence of non-lactamase resistance genes in these β-lactam-resistant isolates. The replicons IncB/O/K/Z, IncI1, IncN, IncFIC, IncQ1, IncX4, IncY, and p0111, associated with antibiotic-resistant large plasmids, were widespread in chicken-source phylogroup F E. coli. There was no obvious difference for the populations, resistance spectrums, and resistance genotypes between phylogroup F E. coli from chicken colibacillosis tissues and retail meats. This detail assessment of the population and resistance genotype showed chicken-source phylogroup F E. coli might hold zoonotic risk and contribute the spread of multidrug-resistant E. coli to humans.
    MeSH term(s) Animals ; Anti-Bacterial Agents/pharmacology ; Chickens ; Drug Resistance, Bacterial/genetics ; Escherichia coli/genetics ; Escherichia coli Infections/epidemiology ; Escherichia coli Infections/veterinary ; Meat ; Multilocus Sequence Typing/veterinary
    Chemical Substances Anti-Bacterial Agents
    Language English
    Publishing date 2021-06-30
    Publishing country England
    Document type Journal Article
    ZDB-ID 242586-5
    ISSN 1525-3171 ; 0032-5791
    ISSN (online) 1525-3171
    ISSN 0032-5791
    DOI 10.1016/j.psj.2021.101370
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Protective Effects of N-Acetylcysteine on Lipopolysaccharide-Induced Respiratory Inflammation and Oxidative Stress.

    Chen, Hongbai / Ma, Nana / Song, Xiaokun / Wei, Guozhen / Zhang, Hongzhu / Liu, Jing / Shen, Xiangzhen / Zhuge, Xiangkai / Chang, Guangjun

    Antioxidants (Basel, Switzerland)

    2022  Volume 11, Issue 5

    Abstract: As the leading cause of bovine respiratory disease (BRD), bacterial pneumonia can result in tremendous losses in the herd farming industry worldwide. N-acetylcysteine (NAC), an acetylated precursor of the amino acid L-cysteine, has been reported to have ... ...

    Abstract As the leading cause of bovine respiratory disease (BRD), bacterial pneumonia can result in tremendous losses in the herd farming industry worldwide. N-acetylcysteine (NAC), an acetylated precursor of the amino acid L-cysteine, has been reported to have anti-inflammatory and antioxidant properties. To explore the protective effect and underlying mechanisms of NAC in ALI, we investigated its role in lipopolysaccharide (LPS)-induced bovine embryo tracheal cells (EBTr) and mouse lung injury models. We found that NAC pretreatment attenuated LPS-induced inflammation in EBTr and mouse models. Moreover, LPS suppressed the expression of oxidative-related factors in EBTr and promoted gene expression and the secretion of inflammatory cytokines. Conversely, the pretreatment of NAC alleviated the secretion of inflammatory cytokines and decreased their mRNA levels, maintaining stable levels of antioxidative gene expression. In vivo, NAC helped LPS-induced inflammatory responses and lung injury in ALI mice. The relative protein concentration, total cells, and percentage of neutrophils in BALF; the level of secretion of IL-6, IL-8, TNF-α, and IL-1β; MPO activity; lung injury score; and the expression level of inflammatory-related genes were decreased significantly in the NAC group compared with the LPS group. NAC also ameliorated LPS-induced mRNA level changes in antioxidative genes. In conclusion, our findings suggest that NAC affects the inflammatory and oxidative response, alleviating LPS-induced EBTr inflammation and mouse lung injury, which offers a natural therapeutic strategy for BRD.
    Language English
    Publishing date 2022-04-29
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2704216-9
    ISSN 2076-3921
    ISSN 2076-3921
    DOI 10.3390/antiox11050879
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Factor H Is Bound by Outer Membrane-Displayed Carbohydrate Metabolism Enzymes of Extraintestinal Pathogenic

    Sun, Yu / Xu, Bin / Zhuge, Xiangkai / Tang, Fang / Wang, Xuhang / Gong, Qianwen / Chen, Rui / Xue, Feng / Dai, Jianjun

    Frontiers in cellular and infection microbiology

    2021  Volume 10, Page(s) 592906

    Abstract: Extraintestinal ... ...

    Abstract Extraintestinal pathogenic
    MeSH term(s) Animals ; Carbohydrate Metabolism ; Complement Factor H ; Escherichia coli Infections ; Escherichia coli Proteins/metabolism ; Extraintestinal Pathogenic Escherichia coli ; Humans ; Virulence
    Chemical Substances Escherichia coli Proteins ; Complement Factor H (80295-65-4)
    Language English
    Publishing date 2021-01-25
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2619676-1
    ISSN 2235-2988 ; 2235-2988
    ISSN (online) 2235-2988
    ISSN 2235-2988
    DOI 10.3389/fcimb.2020.592906
    Database MEDical Literature Analysis and Retrieval System OnLINE

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