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Irenge LM, Ambroise J, Bearzatto B, Durant JF, Bonjean M, Wimba LK, Gala JL. Genomic evolution and rearrangement of CTX-Φ prophage elements in Vibrio cholerae during the 2018-2024 cholera outbreaks in eastern Democratic Republic of the Congo. Emerg Microbes Infect 2024; 13:2399950. [PMID: 39259213 PMCID: PMC11395875 DOI: 10.1080/22221751.2024.2399950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 11/22/2023] [Accepted: 12/11/2023] [Indexed: 09/12/2024]
Abstract
ABSTRACTBetween 2018 and 2024, we conducted systematic whole-genome sequencing and phylogenomic analysis on 263 V. cholerae O1 isolates from cholera patients across four provinces in the Democratic Republic of Congo (North-Kivu, South-Kivu, Tanganyika, and Kasai Oriental). These isolates were classified into the AFR10d and AFR10e sublineages of AFR10 lineage, originating from the third wave of the seventh El Tor cholera pandemic (7PET). Compared to the strains analysed between 2014 and 2017, both sublineages had few genetic changes in the core genome but recent isolates (2022-2024) had significant CTX prophage rearrangement. AFR10e spread across all four provinces, while AFR10d appeared to be extinct by the end of 2020. Since 2022, most V. cholerae O1 isolates exhibited significant CTX prophage rearrangements, including a tandem repeat of an environmental satellite phage RS1 downstream the ctxB toxin gene of the CTX-Φ-3 prophage on the large chromosome, as well as two or more arrayed copies of an environmental pre-CTX-Φ prophage precursor on the small chromosome. We used Illumina data for mapping and coverage estimation to identify isolates with unique CTX-Φ genomic features. Gene localization was then determined on MinION-derived assemblies, revealing an organization similar to that of non-O1 V. cholerae isolates found in Asia (O139 VC1374, and environmental O4 VCE232), but never described in V. cholerae O1 El Tor from the third wave. In conclusion, while the core genome of AFR10d and AFR10e showed minimal changes, significant alterations in the CTX-Φ and pre-CTX-Φ prophage content and organization were identified in AFR10e from 2022 onwards.
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Affiliation(s)
- Leonid M Irenge
- Centre for Applied Molecular Technologies, Institute of Clinical and Experimental Research, Université catholique de Louvain (UCLouvain), Woluwe-Saint-Lambert, Belgium
| | - Jérôme Ambroise
- Centre for Applied Molecular Technologies, Institute of Clinical and Experimental Research, Université catholique de Louvain (UCLouvain), Woluwe-Saint-Lambert, Belgium
| | - Bertrand Bearzatto
- Centre for Applied Molecular Technologies, Institute of Clinical and Experimental Research, Université catholique de Louvain (UCLouvain), Woluwe-Saint-Lambert, Belgium
| | - Jean-François Durant
- Centre for Applied Molecular Technologies, Institute of Clinical and Experimental Research, Université catholique de Louvain (UCLouvain), Woluwe-Saint-Lambert, Belgium
| | - Maxime Bonjean
- Centre for Applied Molecular Technologies, Institute of Clinical and Experimental Research, Université catholique de Louvain (UCLouvain), Woluwe-Saint-Lambert, Belgium
| | - Louisette K Wimba
- Institut Supérieur des Techniques Médicales/Bukavu, Bukavu, The Democratic Republic of the Congo
| | - Jean-Luc Gala
- Centre for Applied Molecular Technologies, Institute of Clinical and Experimental Research, Université catholique de Louvain (UCLouvain), Woluwe-Saint-Lambert, Belgium
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2
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Westerström P, Gabrielsen Ås C, Bak Dragsted U. Characterising virulence in a nontoxigenic non-O1/non-O139 Vibrio cholerae isolate imported from Vietnam. Heliyon 2024; 10:e37205. [PMID: 39309771 PMCID: PMC11416250 DOI: 10.1016/j.heliyon.2024.e37205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 08/28/2024] [Accepted: 08/29/2024] [Indexed: 09/25/2024] Open
Abstract
Vibrio cholerae is a major human pathogen that can cause life-threatening acute diarrhea. V. cholerae are classified according to O-antigen polysaccharide outer membrane properties, where the serotypes O1 and O139 are strains that cause pandemics and epidemics while non-O1/non-O139 usually cause mild disease. The dynamic evolution of V. cholerae involves acquisition of new virulence factors through horizontal gene transfer and formerly nontoxigenic serogroups are increasingly being reported to cause severe forms of human disease. In this study we have serotyped one isolate (ST588-CPH) of imported V. cholerae from Vietnam to Denmark and performed whole genome sequencing to identify known virulence genes and furthermore studied the pattern of virulence in closely related pathogenic strains of V. cholerae. ST558-CPH was found to be a non-O1/non-O139 strain. Initial analysis from the whole genome sequencing gave a 96,6 % match to the O139-specific wbfZ gene, but in a second analysis with a higher identification threshold, the wbfZ gene was absent. We suggest a "de novo" display of a database misannotation, which explains the conflicting results. The MLST analysis revealed that the isolate belongs to the nontoxigenic non-O1/non-O139 sequence type ST558. ST558 has recently been reported as a sequence type forming a cluster of ST's that should be monitored, as it has shown to have virulence causing moderate to severe illness. Our analysis of virulence genes identified MakA, a recently discovered toxin, which seems to be generally present in both toxigenic and nontoxigenic strains.
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Affiliation(s)
- Pontus Westerström
- Department of Medical Microbiology, Clinic of Laboratory Medicine, St. Olavs University Hospital, Trondheim, Norway
| | - Christina Gabrielsen Ås
- Department of Medical Microbiology, Clinic of Laboratory Medicine, St. Olavs University Hospital, Trondheim, Norway
| | - Ulrik Bak Dragsted
- Department for Multimorbidity, North Zealand Hospital, Hilleroed, Denmark
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Wang L, Chu Y, Cao B, Zhang R, Hussain Z, Liu Q. Cobalt (II) porphyrin nanoaggregates as sacrificial templates to improve the peroxidase-like activity of light-controlled TiO 2-based nanozymes for colorimetric determination of amikacin. Talanta 2024; 281:126889. [PMID: 39288583 DOI: 10.1016/j.talanta.2024.126889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2024] [Revised: 08/30/2024] [Accepted: 09/13/2024] [Indexed: 09/19/2024]
Abstract
Although porphyrin modification can improve the peroxidase-like activity of some inorganic nanozymes, it is hardly studied that metal porphyrin self-assembled nanoaggregates as sacrificial templates to turn on the peroxidase-like activity of inorganic nanozymes under light illumination. In this work, cobalt (II) 5,10,15,20-Tetrakis (4-carboxylpheyl)porphyrin (CoTCPP) self-assembled nanoaggregates are firstly used as soft templates to prepare TiO2-based nanozymes with the enhanced peroxidase-like activity. Interestingly, CoTCPP nanoaggregates can be changed into Co oxide nanoparticles dispersed into the nanosphere composites. Furthermore, the peroxidase-like activity of CoTCPP-TiO2 nanospheres can be controlled by light illumination. Comparatively, CoTCPP-TiO2 nanoshperes exhibit the highest peroxidase-like activity of three nanospheres (CoTCPP-TiO2, H2TCPP-TiO2 and TiO2) with similar morphology under the light illumination. Other than the existence of oxygen vacancy, the formation of heterostructure between TiO2 and a small amount of Co3O4 are ascribed to increase the catalytic activity of CoTCPP-TiO2 composites. Thus, a facile and convenient colorimetric sensing platform has been constructed and tuned by light illumination for determining H2O2 and amikacin in a good linear range of 20-100 and 50-100 μM with a limit of detection (LOD) of 3.04 μM and 1.88 μM, respectively. The CoTCPP-TiO2 based colorimetric sensing platform has been validated by measuring the amikacin residue in lake water.
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Affiliation(s)
- Liming Wang
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, 266590, PR China
| | - Ying Chu
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, 266590, PR China
| | - Bo Cao
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, 266590, PR China
| | - Ruizhe Zhang
- College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao, 266590, PR China
| | - Zakir Hussain
- School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), Sector H-12, Islamabad, Pakistan.
| | - Qingyun Liu
- College of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao, 266590, PR China.
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Rafei R, Osman M, Kassem II, Dabboussi F, Weill FX, Hamze M. Spotlight on the epidemiology and antimicrobial susceptibility profiles of Vibrio species in the MENA region, 2000-2023. Future Microbiol 2024; 19:1333-1353. [PMID: 39229784 DOI: 10.1080/17460913.2024.2392460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Accepted: 08/12/2024] [Indexed: 09/05/2024] Open
Abstract
Recent cholera outbreaks in many countries in the Middle East and North Africa (MENA) region have raised public health concerns and focused attention on the genus Vibrio. However, the epidemiology of Vibrio species in humans, water, and seafood is often anecdotal in this region. In this review, we screened the literature and provided a comprehensive assessment of the distribution and antibiotic resistance properties of Vibrio species in different clinical and environmental samples in the region. This review will contribute to understanding closely the real burden of Vibrio species and the spread of antibiotic-resistant strains in the MENA region. The overall objective is to engage epidemiologists, sanitarians and public health stakeholders to address this problem under the One-health ethos.
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Affiliation(s)
- Rayane Rafei
- Laboratoire Microbiologie, Santé et Environnement (LMSE), Doctoral School of Sciences & Technology, Faculty of Public Health, Lebanese University, Tripoli, 1300, Lebanon
| | - Marwan Osman
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Issmat I Kassem
- Center for Food Safety, Department of Food Science & Technology, University of Georgia, 1109 Experiment Street, Griffin, GA 30223-1797, USA
| | - Fouad Dabboussi
- Laboratoire Microbiologie, Santé et Environnement (LMSE), Doctoral School of Sciences & Technology, Faculty of Public Health, Lebanese University, Tripoli, 1300, Lebanon
| | - François-Xavier Weill
- Institut Pasteur, Université Paris Cité, Unité des Bactéries pathogènes entériques, Centre National de Référence des vibrions et du choléra, Paris, F-75015, France
| | - Monzer Hamze
- Laboratoire Microbiologie, Santé et Environnement (LMSE), Doctoral School of Sciences & Technology, Faculty of Public Health, Lebanese University, Tripoli, 1300, Lebanon
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Ebenberger SP, Cakar F, Chen Y, Pressler K, Eberl L, Schild S. The activity of the quorum sensing regulator HapR is modulated by the bacterial extracellular vesicle (BEV)-associated protein ObfA of Vibrio cholerae. J Extracell Vesicles 2024; 13:e12507. [PMID: 39252550 PMCID: PMC11386269 DOI: 10.1002/jev2.12507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 08/05/2024] [Accepted: 08/22/2024] [Indexed: 09/11/2024] Open
Abstract
Vibrio cholerae, a facultative human pathogen and causative agent of the severe diarrheal disease cholera, transits between the human intestinal tract and aquatic reservoirs. Like other bacterial species, V. cholerae continuously releases bacterial extracellular vesicles (BEVs) from its surface, which have been recently characterised for their role during in vivo colonisation. However, between epidemic outbreaks, V. cholerae persists in the biofilm mode for extended periods in aquatic reservoirs, which enhances environmental fitness and host transition. In this study, we investigated the effect of V. cholerae BEVs on biofilm formation, a critical feature for ex vivo survival. In contrast to BEVs from planktonic cultures, our results show that physiological concentrations of BEVs from dynamic biofilm cultures facilitate V. cholerae biofilm formation, which could be linked to a proteinaceous factor. Comparative proteomic analyses of planktonic- and biofilm-derived BEVs identified a previously uncharacterised outer membrane protein as an abundant component of dynamic biofilm-derived BEVs, which was found to be responsible for the BEV-dependent enhancement of biofilm production. Consequently, this protein was named outer membrane-associated biofilm facilitating protein A (ObfA). Comprehensive molecular studies unravelled ObfA as a negative modulator of HapR activity. HapR is a key transcriptional regulator of the V. cholerae quorum sensing (QS) cascade acting as a potent repressor of biofilm formation and virulence. Consistently, obfA mutants not only exhibited reduced biofilm production but also reduced colonisation fitness. Surprisingly, our results demonstrate that ObfA does not affect HapR through the canonical QS system but via the Csr-cascade altering the expression of the small regulatory RNAs CsrC and CsrD. In summary, this study elucidates a novel intraspecies BEV-based communication in V. cholerae that influences biofilm formation and colonisation fitness via a new regulatory pathway involving HapR, Csr-cascade and the BEV-associated protein ObfA.
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Affiliation(s)
| | - Fatih Cakar
- Institute of Molecular BiosciencesUniversity of GrazGrazAustria
| | - Yi‐Chi Chen
- Department of Plant and Microbial BiologyUniversity of ZurichZurichSwitzerland
| | | | - Leo Eberl
- Department of Plant and Microbial BiologyUniversity of ZurichZurichSwitzerland
| | - Stefan Schild
- Institute of Molecular BiosciencesUniversity of GrazGrazAustria
- BioTechMed‐GrazGrazAustria
- Field of Excellence BiohealthUniversity of GrazGrazAustria
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6
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Rouard C, Njamkepo E, Quilici ML, Nguyen S, Knight-Connoni V, Šafránková R, Weill FX. Vibrio cholerae serogroup O5 was responsible for the outbreak of gastroenteritis in Czechoslovakia in 1965. Microb Genom 2024; 10. [PMID: 39235832 DOI: 10.1099/mgen.0.001282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/06/2024] Open
Abstract
Several authors have attributed the explosive outbreak of gastroenteritis that occurred in Czechoslovakia in 1965 to a toxigenic strain of Vibrio cholerae serogroup O37 based on unverified metadata associated with three particular strains from the American Type Culture Collection. Here, by sequencing the original strain preserved at the Czech National Collection of Type Cultures since 1966, we show that the strain responsible for this outbreak was actually a V. cholerae O5 that lacks the genes encoding the cholera toxin, the toxin-coregulated pilus protein and Vibrio pathogenicity islands present in V. cholerae O37 strains.
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Affiliation(s)
- Caroline Rouard
- Institut Pasteur, Université Paris Cité, Unité des Bactéries pathogènes entériques, Centre National de Référence Vibrions et Choléra, Paris, France
| | - Elisabeth Njamkepo
- Institut Pasteur, Université Paris Cité, Unité des Bactéries pathogènes entériques, Centre National de Référence Vibrions et Choléra, Paris, France
| | - Marie-Laure Quilici
- Institut Pasteur, Université Paris Cité, Unité des Bactéries pathogènes entériques, Centre National de Référence Vibrions et Choléra, Paris, France
| | - Scott Nguyen
- ATCC, 10801 University Boulevard, Manassas, VA 20110, USA
| | | | - Renáta Šafránková
- Czech National Collection of Type Cultures, National Institute of Public Health, Prague, Czech Republic
| | - Francois-Xavier Weill
- Institut Pasteur, Université Paris Cité, Unité des Bactéries pathogènes entériques, Centre National de Référence Vibrions et Choléra, Paris, France
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7
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Rouard C, Greig DR, Tauhid T, Dupke S, Njamkepo E, Amato E, van der Putten B, Naseer U, Blaschitz M, Mandilara GD, Cohen Stuart J, Indra A, Noël H, Sideroglou T, Heger F, van den Beld M, Wester AL, Quilici ML, Scholz HC, Fröding I, Jenkins C, Weill FX. Genomic analysis of Vibrio cholerae O1 isolates from cholera cases, Europe, 2022. Euro Surveill 2024; 29. [PMID: 39239731 PMCID: PMC11378513 DOI: 10.2807/1560-7917.es.2024.29.36.2400069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2024] Open
Abstract
BackgroundThe number of cholera cases reported to the World Health Organization (WHO) in 2022 was more than double that of 2021. Nine countries of the WHO European Region reported 51 cases of cholera in 2022 vs five reported cases in 2021.AimWe aimed to confirm that the Vibrio cholerae O1 isolates reported by WHO European Region countries in 2022 belonged to the seventh pandemic El Tor lineage (7PET). We also studied their virulence, antimicrobial resistance (AMR) determinants and phylogenetic relationships.MethodsWe used microbial genomics to study the 49 V. cholerae O1 isolates recovered from the 51 European cases. We also used > 1,450 publicly available 7PET genomes to provide a global phylogenetic context for these 49 isolates.ResultsAll 46 good-quality genomes obtained belonged to the 7PET lineage. All but two isolates belonged to genomic Wave 3 and were grouped within three sub-lineages, one of which, Pre-AFR15, predominated (34/44). This sub-lineage, corresponding to isolates from several countries in Southern Asia, the Middle East and Eastern or Southern Africa, was probably a major contributor to the global upsurge of cholera cases in 2022. No unusual AMR profiles were inferred from analysis of the AMR gene content of the 46 genomes.ConclusionReference laboratories in high-income countries should use whole genome sequencing to assign V. cholerae O1 isolates formally to the 7PET or non-epidemic lineages. Periodic collaborative genomic studies based on isolates from travellers can provide useful information on the circulating strains and their evolution, particularly as concerns AMR.
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Affiliation(s)
- Caroline Rouard
- Institut Pasteur, Université Paris Cité, Unité des Bactéries pathogènes entériques, Centre National de Référence des Vibrions et du choléra, Paris, France
| | - David R Greig
- Gastrointestinal Bacteria Reference Unit (GBRU), UK Health Security Agency, London, United Kingdom
| | - Thamida Tauhid
- Public Health Agency of Sweden, Unit for Laboratory Surveillance of Bacterial Pathogens, Solna, Sweden
| | - Susann Dupke
- Centre for Biological Threats and Special Pathogens (ZBS 2), National Consultant Laboratory for Human Pathogenic Vibrio species, Robert Koch Institute, Berlin, Germany
| | - Elisabeth Njamkepo
- Institut Pasteur, Université Paris Cité, Unité des Bactéries pathogènes entériques, Centre National de Référence des Vibrions et du choléra, Paris, France
| | - Ettore Amato
- Norwegian Institute of Public Health, Department of Infection Control and Preparedness, Oslo, Norway
| | - Boas van der Putten
- Centre for Infectious Disease Control, Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Umaer Naseer
- Norwegian Institute of Public Health, Department of Infection Control and Preparedness, Oslo, Norway
| | | | - Georgia D Mandilara
- National Reference Centre for Salmonella, School of Public Health, University of West Attica, Athens, Greece
| | - James Cohen Stuart
- Department of Medical Microbiology, Noordwest Ziekenhuisgroep, Alkmaar, The Netherlands
| | - Alexander Indra
- Paracelsus Medical University of Salzburg, Salzburg, Austria
| | - Harold Noël
- Santé publique France, Saint Maurice, France
| | - Theologia Sideroglou
- Directorate of Epidemiological Surveillance and Intervention for Infectious Diseases, National Public Health Organization (NPHO), Athens, Greece
| | - Florian Heger
- Austrian Agency for Health and Food Safety, Vienna, Austria
| | - Maaike van den Beld
- Centre for Infectious Disease Control, Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Astrid Louise Wester
- Norwegian Institute of Public Health, Department of Bacteriology, Norwegian Reference Laboratory for Cholera, Oslo, Norway
| | - Marie-Laure Quilici
- Institut Pasteur, Université Paris Cité, Unité des Bactéries pathogènes entériques, Centre National de Référence des Vibrions et du choléra, Paris, France
| | - Holger C Scholz
- Centre for Biological Threats and Special Pathogens (ZBS 2), National Consultant Laboratory for Human Pathogenic Vibrio species, Robert Koch Institute, Berlin, Germany
| | - Inga Fröding
- Public Health Agency of Sweden, Unit for Laboratory Surveillance of Bacterial Pathogens, Solna, Sweden
| | - Claire Jenkins
- Gastrointestinal Bacteria Reference Unit (GBRU), UK Health Security Agency, London, United Kingdom
| | - François-Xavier Weill
- Institut Pasteur, Université Paris Cité, Unité des Bactéries pathogènes entériques, Centre National de Référence des Vibrions et du choléra, Paris, France
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Dias RA. Towards a Comprehensive Definition of Pandemics and Strategies for Prevention: A Historical Review and Future Perspectives. Microorganisms 2024; 12:1802. [PMID: 39338476 PMCID: PMC11433773 DOI: 10.3390/microorganisms12091802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2024] [Revised: 08/22/2024] [Accepted: 08/28/2024] [Indexed: 09/30/2024] Open
Abstract
The lack of a universally accepted definition of a pandemic hinders a comprehensive understanding of and effective response to these global health crises. Current definitions often lack quantitative criteria, rendering them vague and limiting their utility. Here, we propose a refined definition that considers the likelihood of susceptible individuals contracting an infectious disease that culminates in widespread global transmission, increased morbidity and mortality, and profound societal, economic, and political consequences. Applying this definition retrospectively, we identify 22 pandemics that occurred between 165 and 2024 AD and were caused by a variety of diseases, including smallpox (Antonine and American), plague (Justinian, Black Death, and Third Plague), cholera (seven pandemics), influenza (two Russian, Spanish, Asian, Hong Kong, and swine), AIDS, and coronaviruses (SARS, MERS, and COVID-19). This work presents a comprehensive analysis of past pandemics caused by both emerging and re-emerging pathogens, along with their epidemiological characteristics, societal impact, and evolution of public health responses. We also highlight the need for proactive measures to reduce the risk of future pandemics. These strategies include prioritizing surveillance of emerging zoonotic pathogens, conserving biodiversity to counter wildlife trafficking, and minimizing the potential for zoonotic spillover events. In addition, interventions such as promoting alternative protein sources, enforcing the closure of live animal markets in biodiversity-rich regions, and fostering global collaboration among diverse stakeholders are critical to preventing future pandemics. Crucially, improving wildlife surveillance systems will require the concerted efforts of local, national and international entities, including laboratories, field researchers, wildlife conservationists, government agencies and other stakeholders. By fostering collaborative networks and establishing robust biorepositories, we can strengthen our collective capacity to detect, monitor, and mitigate the emergence and transmission of zoonotic pathogens.
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Affiliation(s)
- Ricardo Augusto Dias
- School of Veterinary Medicine, University of Sao Paulo, Av. Prof. Dr. Orlando Marques de Paiva, 87, São Paulo 05508-270, Brazil
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Armando CJ, Rocklöv J, Sidat M, Tozan Y, Mavume AF, Bunker A, Sewe MO. Spatial-temporal analysis of climate and socioeconomic conditions on cholera incidence in Mozambique from 2000 to 2018: an ecological longitudinal retrospective study. BMJ Open 2024; 14:e082503. [PMID: 39160100 PMCID: PMC11337674 DOI: 10.1136/bmjopen-2023-082503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 07/30/2024] [Indexed: 08/21/2024] Open
Abstract
OBJECTIVES This study aims to assess both socioeconomic and climatic factors of cholera morbidity in Mozambique considering both spatial and temporal dimensions. DESIGN An ecological longitudinal retrospective study using monthly provincial cholera cases from Mozambican Ministry of Health between 2000 and 2018. The cholera cases were linked to socioeconomic data from Mozambique Demographic and Health Surveys conducted in the period 2000-2018 and climatic data; relative humidity (RH), mean temperature, precipitation and Normalised Difference Vegetation Index (NDVI). A negative binomial regression model in a Bayesian framework was used to model cholera incidence while adjusting for the spatiotemporal covariance, lagged effect of environmental factors and the socioeconomic indicators. SETTING Eleven provinces in Mozambique. RESULTS Over the 19-year period, a total of 153 941 cholera cases were notified to the surveillance system in Mozambique. Risk of cholera increased with higher monthly mean temperatures above 24°C in comparison to the reference mean temperature of 23°C. At mean temperature of 19°C, cholera risk was higher at a lag of 5-6 months. At a shorter lag of 1 month, precipitation of 223.3 mm resulted in an 57% increase in cholera risk (relative risk, RR 1.57 (95% CI 1.06 to 2.31)). Cholera risk was greatest at 3 lag months with monthly NDVI of 0.137 (RR 1.220 (95% CI 1.042 to 1.430)), compared with the reference value of 0.2. At an RH of 54%, cholera RR was increased by 62% (RR 1.620 (95% CI 1.124 to 2.342)) at a lag of 4 months. We found that ownership of radio RR 0.29, (95% CI 0.109 to 0.776) and mobile phones RR 0.262 (95% CI 0.097 to 0.711) were significantly associated with low cholera risk. CONCLUSION The derived lagged patterns can provide appropriate lead times in a climate-driven cholera early warning system that could contribute to the prevention and management of outbreaks.
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Affiliation(s)
- Chaibo Jose Armando
- Department of Public Health and Clinical Medicine, Sustainable Health Section, Umeå University, Umea, Sweden
- Eduardo Mondlane University, Maputo, Mozambique
| | - Joacim Rocklöv
- Department of Public Health and Clinical Medicine, Sustainable Health Section, Umeå University, Umea, Sweden
- Heidelberg Institute of Global Health and Interdisciplinary Centre for Scientific Computing, Heidelberg University, Heidelberg, Germany
| | | | - Yesim Tozan
- School of Global Public Health, NYU, New York, New York, USA
| | | | - Aditi Bunker
- Heidelberg Institute of Global Health, Heidelberg University, Heidelberg, Germany
| | - Maquins Odhiambo Sewe
- Department of Public Health and Clinical Medicine, Sustainable Health Section, Umeå University, Umea, Sweden
- Universitatsklinikum Heidelberg Heidelberg Institute of Global Health, Heidelberg, Germany
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10
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Sallam M, Athamneh RY, Alkhazaleh R, Alzayadneh L, Jaradat L, Majali T, Obeidat S, Shhab A, Hallit S, Barakat M, Mahafzah A. Attitude towards cholera vaccination and its related factors in Jordan amid the 2022 Middle East outbreak. BMC Public Health 2024; 24:2237. [PMID: 39152391 PMCID: PMC11330065 DOI: 10.1186/s12889-024-19768-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 08/12/2024] [Indexed: 08/19/2024] Open
Abstract
BACKGROUND An outbreak of cholera was reported in the Middle East by the second half of 2022. Raising public awareness and vaccination against cholera represent critical factors in the preventive efforts. The current study aimed to assess the knowledge of cholera and attitude towards its vaccination among a sample of the general public residing in Jordan. METHODS An online self-administered questionnaire was distributed to the residents in Jordan using a snowball convenience-based sampling approach. The questionnaire based on previously published studies included items to evaluate sociodemographic variables, knowledge about cholera symptoms, transmission, and prevention and the willingness to accept cholera vaccination. Additionally, four items based on the validated 5 C scale in Arabic were included to assess the psychological factors influencing attitude to cholera vaccination. RESULTS The final study sample comprised 1339 respondents, of whom 1216 (90.8%) heard of cholera before the study. Among those who heard of cholera, and on a scale from 0 to 20, the overall mean cholera Knowledge score (K-score) was 12.9 ± 3.8. In multivariate analysis, being over 30 years old and occupation as healthcare workers or students in healthcare-related colleges were significantly associated with a higher K-score compared to younger individuals and students in non-healthcare-related colleges. Overall, the acceptance of cholera vaccination if cases are recorded in Jordan, and if the vaccine is safe, effective, and provided freely was reported among 842 participants (69.2%), while 253 participants were hesitant (20.8%) and 121 participants were resistant (10.0%). In linear regression, the significant predictors of cholera vaccine acceptance were solely the three psychological factors namely high confidence, low constraints, and high collective responsibility. CONCLUSIONS In this study, the identified gaps in cholera knowledge emphasize the need to enhance educational initiatives. Although cholera vaccine acceptance was relatively high, a significant minority of the respondents exhibited vaccination hesitancy or resistance. The evident correlation between the psychological determinants and attitudes toward cholera vaccination emphasizes the need to consider these factors upon designing public health campaigns aimed at cholera prevention. The insights of the current study highlight the importance of addressing both knowledge gaps and psychological barriers to optimize cholera control strategies.
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Affiliation(s)
- Malik Sallam
- Department of Pathology, Microbiology and Forensic Medicine, School of Medicine, The University of Jordan, Amman, Jordan.
- Department of Clinical Laboratories and Forensic Medicine, University Hospital, Queen Rania Al-Abdullah Street-Aljubeiha, P.O. Box: 13046, Amman, Jordan.
| | - Rabaa Y Athamneh
- Department of Medical Laboratories Sciences, Faculty of Allied Medical Sciences, Zarqa University, Zarqa, Jordan
| | | | | | - Laila Jaradat
- School of Medicine, The University of Jordan, Amman, Jordan
| | - Tala Majali
- School of Medicine, The University of Jordan, Amman, Jordan
| | - Sarah Obeidat
- School of Medicine, The University of Jordan, Amman, Jordan
| | - Aseel Shhab
- School of Medicine, The University of Jordan, Amman, Jordan
| | - Souheil Hallit
- School of Medicine and Medical Sciences, Holy Spirit University of Kaslik, Jounieh, Lebanon
- Research Department, Psychiatric Hospital of the Cross, Jal Eddib, Lebanon
| | - Muna Barakat
- Department of Clinical Pharmacy and Therapeutics, Faculty of Pharmacy, Applied Science Private University, Amman, Jordan
| | - Azmi Mahafzah
- Department of Pathology, Microbiology and Forensic Medicine, School of Medicine, The University of Jordan, Amman, Jordan
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11
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Abou Fayad A, Rafei R, Njamkepo E, Ezzeddine J, Hussein H, Sinno S, Gerges JR, Barada S, Sleiman A, Assi M, Baakliny M, Hamedeh L, Mahfouz R, Dabboussi F, Feghali R, Mohsen Z, Rady A, Ghosn N, Abiad F, Abubakar A, Barakat A, Wauquier N, Quilici ML, Hamze M, Weill FX, Matar GM. An unusual two-strain cholera outbreak in Lebanon, 2022-2023: a genomic epidemiology study. Nat Commun 2024; 15:6963. [PMID: 39138238 PMCID: PMC11322537 DOI: 10.1038/s41467-024-51428-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Accepted: 08/07/2024] [Indexed: 08/15/2024] Open
Abstract
Cholera is a life-threatening gastrointestinal infection caused by a toxigenic bacterium, Vibrio cholerae. After a lull of almost 30 years, a first case of cholera was detected in Lebanon in October 2022. The outbreak lasted three months, with 8007 suspected cases (671 laboratory-confirmed) and 23 deaths. In this study, we use phenotypic methods and microbial genomics to study 34 clinical and environmental Vibrio cholerae isolates collected throughout this outbreak. All isolates are identified as V. cholerae O1, serotype Ogawa strains from wave 3 of the seventh pandemic El Tor (7PET) lineage. Phylogenomic analysis unexpectedly reveals the presence of two different strains of the seventh pandemic El Tor (7PET) lineage. The dominant strain has a narrow antibiotic resistance profile and is phylogenetically related to South Asian V. cholerae isolates and derived African isolates from the AFR15 sublineage. The second strain is geographically restricted and extensively drug-resistant. It belongs to the AFR13 sublineage and clusters with V. cholerae isolates collected in Yemen. In conclusion, the 2022-2023 Lebanese cholera outbreak is caused by the simultaneous introduction of two different 7PET strains. Genomic surveillance with cross-border collaboration is therefore crucial for the identification of new introductions and routes of circulation of cholera, improving our understanding of cholera epidemiology.
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Affiliation(s)
- Antoine Abou Fayad
- Department of Experimental Pathology, Immunology and Microbiology, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
- Center for Infectious Diseases Research, American University of Beirut, Beirut, Lebanon
- World Health Organization (WHO) Collaborating Center for Reference and Research on Bacterial Pathogens, Beirut, Lebanon
| | - Rayane Rafei
- Laboratoire Microbiologie, Santé et Environnement (LMSE), Doctoral School of Sciences and Technology, Faculty of Public Health, Lebanese University, Tripoli, Lebanon
| | - Elisabeth Njamkepo
- Institut Pasteur, Université Paris Cité, Unité des Bactéries pathogènes entériques, Centre National de Référence des vibrions et du choléra, Paris, F-75015, France
| | - Jana Ezzeddine
- Department of Experimental Pathology, Immunology and Microbiology, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
- Center for Infectious Diseases Research, American University of Beirut, Beirut, Lebanon
- World Health Organization (WHO) Collaborating Center for Reference and Research on Bacterial Pathogens, Beirut, Lebanon
| | - Hadi Hussein
- Department of Experimental Pathology, Immunology and Microbiology, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
- Center for Infectious Diseases Research, American University of Beirut, Beirut, Lebanon
- World Health Organization (WHO) Collaborating Center for Reference and Research on Bacterial Pathogens, Beirut, Lebanon
| | | | - Jose-Rita Gerges
- Department of Experimental Pathology, Immunology and Microbiology, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
- Center for Infectious Diseases Research, American University of Beirut, Beirut, Lebanon
- World Health Organization (WHO) Collaborating Center for Reference and Research on Bacterial Pathogens, Beirut, Lebanon
| | - Sara Barada
- Department of Experimental Pathology, Immunology and Microbiology, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
- Center for Infectious Diseases Research, American University of Beirut, Beirut, Lebanon
- World Health Organization (WHO) Collaborating Center for Reference and Research on Bacterial Pathogens, Beirut, Lebanon
| | - Ahmad Sleiman
- Department of Experimental Pathology, Immunology and Microbiology, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
- Center for Infectious Diseases Research, American University of Beirut, Beirut, Lebanon
- World Health Organization (WHO) Collaborating Center for Reference and Research on Bacterial Pathogens, Beirut, Lebanon
| | | | - Maryo Baakliny
- Epidemiological Surveillance Unit, Ministry of Public Health, Beirut, Lebanon
| | - Lama Hamedeh
- Department of Pathology and Laboratory Medicine, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Rami Mahfouz
- Department of Pathology and Laboratory Medicine, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
| | - Fouad Dabboussi
- Laboratoire Microbiologie, Santé et Environnement (LMSE), Doctoral School of Sciences and Technology, Faculty of Public Health, Lebanese University, Tripoli, Lebanon
| | - Rita Feghali
- Department of Laboratory Medicine, Rafik Hariri University Hospital, Beirut, 2010, Lebanon
| | - Zeina Mohsen
- Department of Laboratory Medicine, Rafik Hariri University Hospital, Beirut, 2010, Lebanon
| | | | - Nada Ghosn
- Epidemiological Surveillance Unit, Ministry of Public Health, Beirut, Lebanon
| | - Firas Abiad
- Epidemiological Surveillance Unit, Ministry of Public Health, Beirut, Lebanon
| | | | - Amal Barakat
- Infectious Hazard Management, Department of Health Emergency World Health Organisation, Eastern Mediterranean Regional Office Cairo, Cairo, Egypt
| | - Nadia Wauquier
- Cholera Programme, Department of Health Emergency Interventions, World Health Organisation, Geneva, Switzerland
| | - Marie-Laure Quilici
- Institut Pasteur, Université Paris Cité, Unité des Bactéries pathogènes entériques, Centre National de Référence des vibrions et du choléra, Paris, F-75015, France
| | - Monzer Hamze
- Laboratoire Microbiologie, Santé et Environnement (LMSE), Doctoral School of Sciences and Technology, Faculty of Public Health, Lebanese University, Tripoli, Lebanon.
| | - François-Xavier Weill
- Institut Pasteur, Université Paris Cité, Unité des Bactéries pathogènes entériques, Centre National de Référence des vibrions et du choléra, Paris, F-75015, France.
| | - Ghassan M Matar
- Department of Experimental Pathology, Immunology and Microbiology, Faculty of Medicine, American University of Beirut, Beirut, Lebanon.
- Center for Infectious Diseases Research, American University of Beirut, Beirut, Lebanon.
- World Health Organization (WHO) Collaborating Center for Reference and Research on Bacterial Pathogens, Beirut, Lebanon.
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12
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Ashinze P, Tolulope Joseph O, Akande E, Mayowa A, Sikiru Ademola A, Mafua N, Sakiru Adeshina A, Ozioma Chukwu B, Emmanuel E, Ocholi Edache A, Nyahwai NE, Wireko AA, Abdul-Rahman T. Zambia's Cholera Crisis: A call for global attention and intervention against an unfolding epidemic scourge. New Microbes New Infect 2024; 60-61:101428. [PMID: 38818246 PMCID: PMC11137335 DOI: 10.1016/j.nmni.2024.101428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 05/09/2024] [Accepted: 05/14/2024] [Indexed: 06/01/2024] Open
Affiliation(s)
- Patrick Ashinze
- 82 Division Medical Service Hospital, Enugu, Nigeria
- Faculty of Clinical Sciences, University of Ilorin, Ilorin, Nigeria
- Division of Research, Toufik's World Medical Association, Sumy, Ukraine
| | | | - Eniola Akande
- Faculty of Clinical Sciences, University of Ilorin, Ilorin, Nigeria
| | - Ajao Mayowa
- Faculty of Clinical Sciences, University of Ilorin, Ilorin, Nigeria
| | | | - Nelson Mafua
- Faculty of Clinical Sciences, Madonna University, Nigeria
| | | | | | - Egbunu Emmanuel
- Faculty of Clinical Sciences, University of Ilorin, Ilorin, Nigeria
- Federal Medical Centre, Bida, Niger state, Nigeria
| | - Akogwu Ocholi Edache
- Faculty of Clinical Sciences, University of Ilorin, Ilorin, Nigeria
- Wesley Guild Hospital, Obafemi Awolowo University Teaching Hospital, Ile-Ife, Osun State, Nigeria
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13
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Chaguza C, Chibwe I, Chaima D, Musicha P, Ndeketa L, Kasambara W, Mhango C, Mseka UL, Bitilinyu-Bangoh J, Mvula B, Kipandula W, Bonongwe P, Munthali RJ, Ngwira S, Mwendera CA, Kalizang'oma A, Jambo KC, Kambalame D, Kamng'ona AW, Steele AD, Chauma-Mwale A, Hungerford D, Kagoli M, Nyaga MM, Dube Q, French N, Msefula CL, Cunliffe NA, Jere KC. Genomic insights into the 2022-2023Vibrio cholerae outbreak in Malawi. Nat Commun 2024; 15:6291. [PMID: 39060226 PMCID: PMC11282309 DOI: 10.1038/s41467-024-50484-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Accepted: 07/09/2024] [Indexed: 07/28/2024] Open
Abstract
Malawi experienced its deadliest Vibrio cholerae (Vc) outbreak following devastating cyclones, with >58,000 cases and >1700 deaths reported between March 2022 and May 2023. Here, we use population genomics to investigate the attributes and origin of the Malawi 2022-2023 Vc outbreak isolates. Our results demonstrate the predominance of ST69 clone, also known as the seventh cholera pandemic El Tor (7PET) lineage, expressing O1 Ogawa (~ 80%) serotype followed by Inaba (~ 16%) and sporadic non-O1/non-7PET serogroups (~ 4%). Phylogenetic reconstruction revealed that the Malawi outbreak strains correspond to a recent importation from Asia into Africa (sublineage AFR15). These isolates harboured known antimicrobial resistance and virulence elements, notably the ICEGEN/ICEVchHai1/ICEVchind5 SXT/R391-like integrative conjugative elements and a CTXφ prophage with the ctxB7 genotype compared to historical Malawian Vc isolates. These data suggest that the devastating cyclones coupled with the recent importation of 7PET serogroup O1 strains, may explain the magnitude of the 2022-2023 cholera outbreak in Malawi.
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Affiliation(s)
- Chrispin Chaguza
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, Yale University, New Haven, CT, USA.
- Yale Institute for Global Health, Yale University, New Haven, CT, USA.
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK.
- NIHR Mucosal Pathogens Research Unit, Research Department of Infection, Division of Infection and Immunity, University College London, London, UK.
- Parasites and Microbes Programme, Wellcome Sanger Institute, Hinxton, UK.
| | - Innocent Chibwe
- Public Health Institute of Malawi, Ministry of Health, Lilongwe, Malawi
| | - David Chaima
- Department of Pathology, School of Medicine and Oral Health, Kamuzu University of Health Sciences, Blantyre, Malawi
| | - Patrick Musicha
- Parasites and Microbes Programme, Wellcome Sanger Institute, Hinxton, UK
- Malawi-Liverpool-Wellcome Research Programme, Blantyre, Malawi
| | - Latif Ndeketa
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK
- Malawi-Liverpool-Wellcome Research Programme, Blantyre, Malawi
| | | | | | - Upendo L Mseka
- Malawi-Liverpool-Wellcome Research Programme, Blantyre, Malawi
| | | | - Bernard Mvula
- Public Health Institute of Malawi, Ministry of Health, Lilongwe, Malawi
| | - Wakisa Kipandula
- Department of Medical Laboratory Sciences, Faculty of Biomedical Sciences and Health profession, Kamuzu University of Health Sciences, Blantyre, Malawi
| | - Patrick Bonongwe
- Ministry of Health, Balaka District Hospital, Balaka, Machinga, Malawi
| | - Richard J Munthali
- Department of Psychiatry, University of British Columbia, Vancouver, BC, Canada
| | - Selemani Ngwira
- Public Health Institute of Malawi, Ministry of Health, Lilongwe, Malawi
| | - Chikondi A Mwendera
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK
| | - Akuzike Kalizang'oma
- NIHR Mucosal Pathogens Research Unit, Research Department of Infection, Division of Infection and Immunity, University College London, London, UK
- Malawi-Liverpool-Wellcome Research Programme, Blantyre, Malawi
| | - Kondwani C Jambo
- Malawi-Liverpool-Wellcome Research Programme, Blantyre, Malawi
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | | | - Arox W Kamng'ona
- Department of Biomedical Sciences, School of Life Sciences and Allied Health Professions, Kamuzu University of Health Sciences, Blantyre, Malawi
| | - A Duncan Steele
- Diarrhoeal Pathogens Research Unit, Sefako Makgatho Health Sciences University, Medunsa, 0204, Pretoria, South Africa
| | | | - Daniel Hungerford
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK
- NIHR Health Protection Research Unit in Gastrointestinal Infections, University of Liverpool, Liverpool, UK
| | - Matthew Kagoli
- Public Health Institute of Malawi, Ministry of Health, Lilongwe, Malawi
| | - Martin M Nyaga
- Next Generation Sequencing Unit and Division of Virology, Faculty of Health Sciences, University of the Free State, Bloemfontein, 9300, South Africa
| | - Queen Dube
- Malawi Ministry of Health, Lilongwe, Malawi
| | - Neil French
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK
- Malawi-Liverpool-Wellcome Research Programme, Blantyre, Malawi
| | - Chisomo L Msefula
- Department of Pathology, School of Medicine and Oral Health, Kamuzu University of Health Sciences, Blantyre, Malawi
| | - Nigel A Cunliffe
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK
- NIHR Health Protection Research Unit in Gastrointestinal Infections, University of Liverpool, Liverpool, UK
- NIHR Global Health Research Group on Gastrointestinal Infections, University of Liverpool, Liverpool, UK
| | - Khuzwayo C Jere
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, UK.
- Malawi-Liverpool-Wellcome Research Programme, Blantyre, Malawi.
- Department of Medical Laboratory Sciences, Faculty of Biomedical Sciences and Health profession, Kamuzu University of Health Sciences, Blantyre, Malawi.
- NIHR Health Protection Research Unit in Gastrointestinal Infections, University of Liverpool, Liverpool, UK.
- NIHR Global Health Research Group on Gastrointestinal Infections, University of Liverpool, Liverpool, UK.
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14
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Kong M, Zhao W, Wang C, Qi J, Liu J, Zhang Q. A Well-Established Gut Microbiota Enhances the Efficiency of Nutrient Metabolism and Improves the Growth Performance of Trachinotus ovatus. Int J Mol Sci 2024; 25:5525. [PMID: 38791564 PMCID: PMC11121967 DOI: 10.3390/ijms25105525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 05/14/2024] [Accepted: 05/16/2024] [Indexed: 05/26/2024] Open
Abstract
The gut microbiota has become an essential component of the host organism and plays a crucial role in the host immune system, metabolism, and physiology. Nevertheless, our comprehension of how the fish gut microbiota contributes to enhancing nutrient utilization in the diet and improving host growth performance remains unclear. In this study, we employed a comprehensive analysis of the microbiome, metabolome, and transcriptome to analyze intestines of the normal control group and the antibiotic-treated model group of T. ovatus to investigate how the gut microbiota enhances fish growth performance and uncover the underlying mechanisms. First, we found that the growth performance of the control group was significantly higher than that of the antibiotic-treated model under the same feeding conditions. Subsequent multiomics analyses showed that the gut microbiota can improve its own composition by mediating the colonization of some probiotics represented by Lactobacillus in the intestine, improving host metabolic efficiency with proteins and lipids, and also influencing the expression of genes in signaling pathways related to cell proliferation, which together contribute to the improved growth performance of T. ovatus. Our results demonstrated the important contribution of gut microbiota and its underlying molecular mechanisms on the growth performance of T. ovatus.
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Affiliation(s)
- Miao Kong
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institution, Ocean University of China, Sanya 572025, China; (M.K.); (W.Z.); (C.W.); (J.Q.); (J.L.)
- MOE Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Wendong Zhao
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institution, Ocean University of China, Sanya 572025, China; (M.K.); (W.Z.); (C.W.); (J.Q.); (J.L.)
- MOE Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Cong Wang
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institution, Ocean University of China, Sanya 572025, China; (M.K.); (W.Z.); (C.W.); (J.Q.); (J.L.)
- MOE Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Jie Qi
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institution, Ocean University of China, Sanya 572025, China; (M.K.); (W.Z.); (C.W.); (J.Q.); (J.L.)
- MOE Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Jinxiang Liu
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institution, Ocean University of China, Sanya 572025, China; (M.K.); (W.Z.); (C.W.); (J.Q.); (J.L.)
- MOE Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao 266003, China
| | - Quanqi Zhang
- Key Laboratory of Tropical Aquatic Germplasm of Hainan Province, Sanya Oceanographic Institution, Ocean University of China, Sanya 572025, China; (M.K.); (W.Z.); (C.W.); (J.Q.); (J.L.)
- MOE Key Laboratory of Marine Genetics and Breeding, Ministry of Education, Ocean University of China, Qingdao 266003, China
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15
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Pauzé-Foixet J, Mathieu-Denoncourt A, Duperthuy M. Elevated concentrations of polymyxin B elicit a biofilm-specific resistance mechanism in Vibrio cholerae. Res Microbiol 2024; 175:104179. [PMID: 38185395 DOI: 10.1016/j.resmic.2023.104179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 12/05/2023] [Accepted: 12/30/2023] [Indexed: 01/09/2024]
Abstract
Vibrio cholerae can form biofilms in the aquatic environment and in the human intestine, facilitating the release of hyper-infectious aggregates. Due to the increasing antibiotic resistance, alternatives need to be found. One of these alternatives is antimicrobial peptides, including polymyxin B (PmB). In this study, we first investigated the resistance of V. cholerae O1 El Tor strain A1552 to various antimicrobials under aerobic and anaerobic conditions. An increased resistance to PmB is observed in anaerobiosis, with a 3-fold increase in the dose required for 50 % growth inhibition. We then studied the impact of the PmB on the formation and the degradation of V. cholerae biofilms to PmB. Our results show that PmB affects more efficiently biofilm formation under anaerobic conditions. On the other hand, preformed biofilms are susceptible to degradation by PmB at concentrations close to the minimal inhibitory concentration. At higher concentrations, we observe an opacification of the biofilm structures within 20 min post-treatment, suggesting a densification of the structure. This densification does not seem to result from the overexpression of matrix genes but rather from DNA release through massive cell lysis, likely forming a protective shield that limits the penetration of the PmB into the biofilm.
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Affiliation(s)
- Julien Pauzé-Foixet
- Département de Microbiologie, Infectiologie et Immunologie, Faculté de médecine, Université de Montréal, Montréal, Québec, Canada
| | - Annabelle Mathieu-Denoncourt
- Département de Microbiologie, Infectiologie et Immunologie, Faculté de médecine, Université de Montréal, Montréal, Québec, Canada
| | - Marylise Duperthuy
- Département de Microbiologie, Infectiologie et Immunologie, Faculté de médecine, Université de Montréal, Montréal, Québec, Canada.
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16
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Blanco P, Hipólito A, García-Pastor L, Trigo da Roza F, Toribio-Celestino L, Ortega A, Vergara E, San Millán Á, Escudero J. Identification of promoter activity in gene-less cassettes from Vibrionaceae superintegrons. Nucleic Acids Res 2024; 52:2961-2976. [PMID: 38214222 PMCID: PMC11014356 DOI: 10.1093/nar/gkad1252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 12/18/2023] [Accepted: 12/26/2023] [Indexed: 01/13/2024] Open
Abstract
Integrons are genetic platforms that acquire new genes encoded in integron cassettes (ICs), building arrays of adaptive functions. ICs generally encode promoterless genes, whose expression relies on the platform-associated Pc promoter, with the cassette array functioning as an operon-like structure regulated by the distance to the Pc. This is relevant in large sedentary chromosomal integrons (SCIs) carrying hundreds of ICs, like those in Vibrio species. We selected 29 gene-less cassettes in four Vibrio SCIs, and explored whether their function could be related to the transcription regulation of adjacent ICs. We show that most gene-less cassettes have promoter activity on the sense strand, enhancing the expression of downstream cassettes. Additionally, we identified the transcription start sites of gene-less ICs through 5'-RACE. Accordingly, we found that most of the superintegron in Vibrio cholerae is not silent. These promoter cassettes can trigger the expression of a silent dfrB9 cassette downstream, increasing trimethoprim resistance >512-fold in V. cholerae and Escherichia coli. Furthermore, one cassette with an antisense promoter can reduce trimethoprim resistance when cloned downstream. Our findings highlight the regulatory role of gene-less cassettes in the expression of adjacent cassettes, emphasizing their significance in SCIs and their clinical importance if captured by mobile integrons.
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Affiliation(s)
- Paula Blanco
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid 28040, Spain
- VISAVET Health Surveillance Centre, Universidad Complutense de Madrid, Madrid 28040, Spain
| | - Alberto Hipólito
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid 28040, Spain
- VISAVET Health Surveillance Centre, Universidad Complutense de Madrid, Madrid 28040, Spain
| | - Lucía García-Pastor
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid 28040, Spain
- VISAVET Health Surveillance Centre, Universidad Complutense de Madrid, Madrid 28040, Spain
| | - Filipa Trigo da Roza
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid 28040, Spain
- VISAVET Health Surveillance Centre, Universidad Complutense de Madrid, Madrid 28040, Spain
| | - Laura Toribio-Celestino
- Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), Madrid 28049, Spain
| | - Alba Cristina Ortega
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid 28040, Spain
| | - Ester Vergara
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid 28040, Spain
- VISAVET Health Surveillance Centre, Universidad Complutense de Madrid, Madrid 28040, Spain
| | - Álvaro San Millán
- Centro Nacional de Biotecnología, Consejo Superior de Investigaciones Científicas (CNB-CSIC), Madrid 28049, Spain
- Centro de Investigación Biológica en Red de Epidemiología y Salud Pública (CIBERESP), Instituto de Salud Carlos III, Madrid 28222, Spain
| | - José Antonio Escudero
- Departamento de Sanidad Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid 28040, Spain
- VISAVET Health Surveillance Centre, Universidad Complutense de Madrid, Madrid 28040, Spain
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17
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Chisenga CC, Phiri B, Ng’ombe H, Muchimba M, Musukuma-Chifulo K, Silwamba S, Laban NM, Luchen C, Liswaniso F, Chibesa K, Mubanga C, Mwape K, Simuyandi M, Cunningham AF, Sack D, Bosomprah S. Seroconversion and Kinetics of Vibriocidal Antibodies during the First 90 Days of Re-Vaccination with Oral Cholera Vaccine in an Endemic Population. Vaccines (Basel) 2024; 12:390. [PMID: 38675772 PMCID: PMC11055093 DOI: 10.3390/vaccines12040390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/05/2024] [Accepted: 03/20/2024] [Indexed: 04/28/2024] Open
Abstract
Despite the successful introduction of oral cholera vaccines, Zambia continues to experience multiple, sporadic, and protracted cholera outbreaks in various parts of the country. While vaccines have been useful in staying the cholera outbreaks, the ideal window for re-vaccinating individuals resident in cholera hotspot areas remains unclear. Using a prospective cohort study design, 225 individuals were enrolled and re-vaccinated with two doses of Shanchol™, regardless of previous vaccination, and followed-up for 90 days. Bloods were collected at baseline before re-vaccination, at day 14 prior to second dosing, and subsequently on days 28, 60, and 90. Vibriocidal assay was performed on samples collected at all five time points. Our results showed that anti-LPS and vibriocidal antibody titers increased at day 14 after re-vaccination and decreased gradually at 28, 60, and 90 days across all the groups. Seroconversion rates were generally comparable in all treatment arms. We therefore conclude that vibriocidal antibody titers generated in response to re-vaccination still wane quickly, irrespective of previous vaccination status. However, despite the observed decline, the levels of vibriocidal antibodies remained elevated over baseline values across all groups, an important aspect for Zambia where there is no empirical evidence as to the ideal time for re-vaccination.
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Affiliation(s)
- Caroline Cleopatra Chisenga
- Enteric Disease and Vaccine Research Unit, Centre for Infectious Disease Research in Zambia, Lusaka P.O. Box 34681, Zambia; (C.C.C.); (B.P.); (H.N.); (M.M.); (K.M.-C.); (S.S.); (N.M.L.); (C.L.); (F.L.); (K.C.); (C.M.); (K.M.); (M.S.)
| | - Bernard Phiri
- Enteric Disease and Vaccine Research Unit, Centre for Infectious Disease Research in Zambia, Lusaka P.O. Box 34681, Zambia; (C.C.C.); (B.P.); (H.N.); (M.M.); (K.M.-C.); (S.S.); (N.M.L.); (C.L.); (F.L.); (K.C.); (C.M.); (K.M.); (M.S.)
| | - Harriet Ng’ombe
- Enteric Disease and Vaccine Research Unit, Centre for Infectious Disease Research in Zambia, Lusaka P.O. Box 34681, Zambia; (C.C.C.); (B.P.); (H.N.); (M.M.); (K.M.-C.); (S.S.); (N.M.L.); (C.L.); (F.L.); (K.C.); (C.M.); (K.M.); (M.S.)
| | - Mutinta Muchimba
- Enteric Disease and Vaccine Research Unit, Centre for Infectious Disease Research in Zambia, Lusaka P.O. Box 34681, Zambia; (C.C.C.); (B.P.); (H.N.); (M.M.); (K.M.-C.); (S.S.); (N.M.L.); (C.L.); (F.L.); (K.C.); (C.M.); (K.M.); (M.S.)
| | - Kalo Musukuma-Chifulo
- Enteric Disease and Vaccine Research Unit, Centre for Infectious Disease Research in Zambia, Lusaka P.O. Box 34681, Zambia; (C.C.C.); (B.P.); (H.N.); (M.M.); (K.M.-C.); (S.S.); (N.M.L.); (C.L.); (F.L.); (K.C.); (C.M.); (K.M.); (M.S.)
| | - Suwilanji Silwamba
- Enteric Disease and Vaccine Research Unit, Centre for Infectious Disease Research in Zambia, Lusaka P.O. Box 34681, Zambia; (C.C.C.); (B.P.); (H.N.); (M.M.); (K.M.-C.); (S.S.); (N.M.L.); (C.L.); (F.L.); (K.C.); (C.M.); (K.M.); (M.S.)
| | - Natasha Makabilo Laban
- Enteric Disease and Vaccine Research Unit, Centre for Infectious Disease Research in Zambia, Lusaka P.O. Box 34681, Zambia; (C.C.C.); (B.P.); (H.N.); (M.M.); (K.M.-C.); (S.S.); (N.M.L.); (C.L.); (F.L.); (K.C.); (C.M.); (K.M.); (M.S.)
| | - Chaluma Luchen
- Enteric Disease and Vaccine Research Unit, Centre for Infectious Disease Research in Zambia, Lusaka P.O. Box 34681, Zambia; (C.C.C.); (B.P.); (H.N.); (M.M.); (K.M.-C.); (S.S.); (N.M.L.); (C.L.); (F.L.); (K.C.); (C.M.); (K.M.); (M.S.)
| | - Fraser Liswaniso
- Enteric Disease and Vaccine Research Unit, Centre for Infectious Disease Research in Zambia, Lusaka P.O. Box 34681, Zambia; (C.C.C.); (B.P.); (H.N.); (M.M.); (K.M.-C.); (S.S.); (N.M.L.); (C.L.); (F.L.); (K.C.); (C.M.); (K.M.); (M.S.)
| | - Kennedy Chibesa
- Enteric Disease and Vaccine Research Unit, Centre for Infectious Disease Research in Zambia, Lusaka P.O. Box 34681, Zambia; (C.C.C.); (B.P.); (H.N.); (M.M.); (K.M.-C.); (S.S.); (N.M.L.); (C.L.); (F.L.); (K.C.); (C.M.); (K.M.); (M.S.)
| | - Cynthia Mubanga
- Enteric Disease and Vaccine Research Unit, Centre for Infectious Disease Research in Zambia, Lusaka P.O. Box 34681, Zambia; (C.C.C.); (B.P.); (H.N.); (M.M.); (K.M.-C.); (S.S.); (N.M.L.); (C.L.); (F.L.); (K.C.); (C.M.); (K.M.); (M.S.)
| | - Kapambwe Mwape
- Enteric Disease and Vaccine Research Unit, Centre for Infectious Disease Research in Zambia, Lusaka P.O. Box 34681, Zambia; (C.C.C.); (B.P.); (H.N.); (M.M.); (K.M.-C.); (S.S.); (N.M.L.); (C.L.); (F.L.); (K.C.); (C.M.); (K.M.); (M.S.)
| | - Michelo Simuyandi
- Enteric Disease and Vaccine Research Unit, Centre for Infectious Disease Research in Zambia, Lusaka P.O. Box 34681, Zambia; (C.C.C.); (B.P.); (H.N.); (M.M.); (K.M.-C.); (S.S.); (N.M.L.); (C.L.); (F.L.); (K.C.); (C.M.); (K.M.); (M.S.)
| | - Adam F. Cunningham
- Institute of Immunology and Immunotherapy, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK;
| | - David Sack
- Center for Immunization Research, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA;
| | - Samuel Bosomprah
- Enteric Disease and Vaccine Research Unit, Centre for Infectious Disease Research in Zambia, Lusaka P.O. Box 34681, Zambia; (C.C.C.); (B.P.); (H.N.); (M.M.); (K.M.-C.); (S.S.); (N.M.L.); (C.L.); (F.L.); (K.C.); (C.M.); (K.M.); (M.S.)
- Department of Biostatistics, School of Public Health, University of Ghana, Accra P.O. Box LG13, Ghana
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He X, Fan K, Gong H, Huang M, Zeng Q, Huang J, Peng X, Lai P, Lu Y, Wang H. Mechanism study of cross presentation of exogenous antigen induced by cholera toxin-like chimeric protein. Vaccine 2024; 42:1549-1560. [PMID: 38320931 DOI: 10.1016/j.vaccine.2024.01.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 12/09/2023] [Accepted: 01/23/2024] [Indexed: 02/08/2024]
Abstract
Tumor subunit vaccines have great potential in personalized cancer immunotherapy. They are usually administered with adjuvant owing to their low immunogenicity. Cholera toxin (CT) is a biological adjuvant with diverse biological functions and a long history of use. Our earlier study revealed that a CT-like chimeric protein co-delivered with murine granulocyte-macrophage colony stimulating factor (mGM-CSF) and prostate cancer antigen epitope could co-stimulate dendritic cells (DCs) and enhance cross presentation of tumor epitope. To further study the molecular mechanism of CT-like chimeric protein in cross presentation, major histocompatibility complex class I (MHC I)-restricted epitope 257-264 of ovalbumin (OVAT) was used as a model antigen peptide in this study. Recombinant A subunit and pentameric B subunit of CT protein were respectively genetically constructed and purified. Then both assembled into AB5 chimeric protein in vitro. Three different chimeric biomacromolecules containing mGM-CSF and OVAT were constructed according to the different fusion sites and whether the endoplasmic reticulum (ER) retention sequence was included. It was found that A2 domain and B subunit of CT were both available for loading epitopes and retaining GM1 affinity. The binding activity of GM1 was positively correlated with antigen endocytosis. Once internalized, DCs became mature and cross-presented antigen. KDEL helped the whole molecule to be retained in the ER, and this improved the cross presentation of antigen on MHC I molecules. In conclusion, hexameric CT-like chimeric protein with dual effects of GM1 affinity and ER retention sequence were potential in improvement of cross presentation. The results laid a foundation for designing personalized tumor vaccine based on CT-like chimeric protein molecular structure.
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Affiliation(s)
- Xianying He
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, CN, China
| | - Kaixiang Fan
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, CN, China
| | - Haiyan Gong
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, CN, China
| | - Mingqin Huang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, CN, China
| | - Qingsong Zeng
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, CN, China
| | - Junjie Huang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, CN, China
| | - Ximing Peng
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, CN, China
| | - Peifang Lai
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, CN, China
| | - Yujing Lu
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, CN, China
| | - Huaqian Wang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou 510006, CN, China.
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Sokemawu Freeman AY, Ganizani A, Mwale AC, Manda IK, Chitete J, Phiri G, Stambuli B, Chimulambe E, Koslengar M, Kimambo NR, Bita A, Apolot RR, Mponda H, Mungwira RG, Chapotera G, Yur CT, Yatich NJ, Totah T, Mantchombe F, Chamla DD, Olu OO. Analyses of drinking water quality during a protracted cholera epidemic in Malawi - a cross-sectional study of key physicochemical and microbiological parameters. JOURNAL OF WATER AND HEALTH 2024; 22:510-521. [PMID: 38557567 DOI: 10.2166/wh.2024.283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 01/25/2024] [Indexed: 04/04/2024]
Abstract
Anecdotal evidence and available literature indicated that contaminated water played a major role in spreading the prolonged cholera epidemic in Malawi from 2022 to 2023. This study assessed drinking water quality in 17 cholera-affected Malawi districts from February to April 2023. Six hundred and thirty-three records were analysed. The median counts/100 ml for thermotolerant coliform was 98 (interquartile range (IQR): 4-100) and that for Escherichia coli was 0 (IQR: 0-9). The drinking water in all (except one) districts was contaminated by thermotolerant coliform, while six districts had their drinking water sources contaminated by E. coli. The percentage of contaminated drinking water sources was significantly higher in shallow unprotected wells (80.0% for E. coli and 95.0% for thermotolerant coliform) and in households (55.8% for E. coli and 86.0% for thermotolerant coliform). Logistic regression showed that household water has three times more risk of being contaminated by E. coli and two and a half times more risk of being contaminated by thermotolerant coliform compared to other water sources. This study demonstrated widespread contamination of drinking water sources during a cholera epidemic in Malawi, which may be the plausible reason for the protracted nature of the epidemic.
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Affiliation(s)
| | | | | | | | | | - Gift Phiri
- Ministry of Water and Sanitation, Lilongwe, Malawi
| | | | | | | | | | - Alisa Bita
- World Health Organization Country Office, Lilongwe, Malawi
| | | | - Hamid Mponda
- World Health Organization Country Office, Lilongwe, Malawi
| | | | | | - Chol Thabo Yur
- World Health Organization Emergency Preparedness and Response Hub, Nairobi, Kenya
| | | | - Terence Totah
- World Health Organization Regional Office for Africa, Brazzaville, Congo
| | - Freddie Mantchombe
- World Health Organization Regional Office for Africa, Brazzaville, Congo
| | - Dick Damas Chamla
- World Health Organization Regional Office for Africa, Brazzaville, Congo
| | - Olushayo Oluseun Olu
- World Health Organization Regional Office for Africa, Brazzaville, Congo E-mail:
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20
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Potapova A, Garvey W, Dahl P, Guo S, Chang Y, Schwechheimer C, Trebino MA, Floyd KA, Phinney BS, Liu J, Malvankar NS, Yildiz FH. Outer membrane vesicles and the outer membrane protein OmpU govern Vibrio cholerae biofilm matrix assembly. mBio 2024; 15:e0330423. [PMID: 38206049 PMCID: PMC10865864 DOI: 10.1128/mbio.03304-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 12/12/2023] [Indexed: 01/12/2024] Open
Abstract
Biofilms are matrix-encased microbial communities that increase the environmental fitness and infectivity of many human pathogens including Vibrio cholerae. Biofilm matrix assembly is essential for biofilm formation and function. Known components of the V. cholerae biofilm matrix are the polysaccharide Vibrio polysaccharide (VPS), matrix proteins RbmA, RbmC, Bap1, and extracellular DNA, but the majority of the protein composition is uncharacterized. This study comprehensively analyzed the biofilm matrix proteome and revealed the presence of outer membrane proteins (OMPs). Outer membrane vesicles (OMVs) were also present in the V. cholerae biofilm matrix and were associated with OMPs and many biofilm matrix proteins suggesting that they participate in biofilm matrix assembly. Consistent with this, OMVs had the capability to alter biofilm structural properties depending on their composition. OmpU was the most prevalent OMP in the matrix, and its absence altered biofilm architecture by increasing VPS production. Single-cell force spectroscopy revealed that proteins critical for biofilm formation, OmpU, the matrix proteins RbmA, RbmC, Bap1, and VPS contribute to cell-surface adhesion forces at differing efficiency, with VPS showing the highest efficiency whereas Bap1 showing the lowest efficiency. Our findings provide new insights into the molecular mechanisms underlying biofilm matrix assembly in V. cholerae, which may provide new opportunities to develop inhibitors that specifically alter biofilm matrix properties and, thus, affect either the environmental survival or pathogenesis of V. cholerae.IMPORTANCECholera remains a major public health concern. Vibrio cholerae, the causative agent of cholera, forms biofilms, which are critical for its transmission, infectivity, and environmental persistence. While we know that the V. cholerae biofilm matrix contains exopolysaccharide, matrix proteins, and extracellular DNA, we do not have a comprehensive understanding of the majority of biofilm matrix components. Here, we discover outer membrane vesicles (OMVs) within the biofilm matrix of V. cholerae. Proteomic analysis of the matrix and matrix-associated OMVs showed that OMVs carry key matrix proteins and Vibrio polysaccharide (VPS) to help build biofilms. We also characterize the role of the highly abundant outer membrane protein OmpU in biofilm formation and show that it impacts biofilm architecture in a VPS-dependent manner. Understanding V. cholerae biofilm formation is important for developing a better prevention and treatment strategy framework.
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Affiliation(s)
- Anna Potapova
- Department of Microbiology and Environmental Toxicology, University of California-Santa Cruz, Santa Cruz, California, USA
| | - William Garvey
- Department of Microbiology and Environmental Toxicology, University of California-Santa Cruz, Santa Cruz, California, USA
| | - Peter Dahl
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut, USA
- Microbial Sciences Institute, Yale University, West Haven, Connecticut, USA
| | - Shuaiqi Guo
- Microbial Sciences Institute, Yale University, West Haven, Connecticut, USA
- Department of Microbial Pathogenesis, Yale School of Medicine, New Haven, Connecticut, USA
| | - Yunjie Chang
- Microbial Sciences Institute, Yale University, West Haven, Connecticut, USA
- Department of Microbial Pathogenesis, Yale School of Medicine, New Haven, Connecticut, USA
| | - Carmen Schwechheimer
- Department of Microbiology and Environmental Toxicology, University of California-Santa Cruz, Santa Cruz, California, USA
| | - Michael A. Trebino
- Department of Microbiology and Environmental Toxicology, University of California-Santa Cruz, Santa Cruz, California, USA
| | - Kyle A. Floyd
- Department of Microbiology and Environmental Toxicology, University of California-Santa Cruz, Santa Cruz, California, USA
| | - Brett S. Phinney
- Proteomics Core Facility, UC Davis Genome Center, University of California-Davis, Davis, California, USA
| | - Jun Liu
- Microbial Sciences Institute, Yale University, West Haven, Connecticut, USA
- Department of Microbial Pathogenesis, Yale School of Medicine, New Haven, Connecticut, USA
| | - Nikhil S. Malvankar
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut, USA
- Microbial Sciences Institute, Yale University, West Haven, Connecticut, USA
| | - Fitnat H. Yildiz
- Department of Microbiology and Environmental Toxicology, University of California-Santa Cruz, Santa Cruz, California, USA
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21
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Chavda VP, Vuppu S, Mishra T, Kamaraj S, Sharma N, Punetha S, Sairam A, Vaghela D, Dargahi N, Apostolopoulos V. Combatting infectious diarrhea: innovations in treatment and vaccination strategies. Expert Rev Vaccines 2024; 23:246-265. [PMID: 38372023 DOI: 10.1080/14760584.2023.2295015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 12/11/2023] [Indexed: 02/20/2024]
Abstract
INTRODUCTION The escalating prevalence of infectious diseases is an important cause of concern in society. Particularly in several developing countries, infectious diarrhea poses a major problem, with a high fatality rate, especially among young children. The condition is divided into four classes, namely, acute diarrhea, invasive diarrhea, acute bloody diarrhea, and chronic diarrhea. Various pathogenic agents, such as bacteria, viruses, protozoans, and helminths, contribute to the onset of this condition. AREAS COVERED The review discusses the scenario of infectious diarrhea, the prevalent types, as well as approaches to management including preventive, therapeutic, and vaccination strategies. The vaccination techniques are extensively discussed including the available vaccines, their advantages as well as limitations. EXPERT OPINION There are several approaches available to develop new-improved vaccines. In addition, route of immunization is important and aerosols/nasal sprays, oral route, skin patches, powders, and liquid jets to minimize needles can be used. Plant-based vaccines, such as rice, might save packing and refrigeration costs by being long-lasting, non-refrigerable, and immunogenic. Future research should utilize predetermined PCR testing intervals and symptom monitoring to identify persistent pathogens after therapy and symptom remission.
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Affiliation(s)
- Vivek P Chavda
- Department of Pharmaceutics and Pharmaceutical Technology, LM College of Pharmacy, Ahmedabad, Gujarat, India
| | - Suneetha Vuppu
- Department of Biotechnology, Science, Innovation, and Society Research Lab 115, Hexagon (SMV), Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Toshika Mishra
- Department of Biotechnology, Science, Innovation, and Society Research Lab 115, Hexagon (SMV), Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Sathvika Kamaraj
- Department of Biotechnology, Science, Innovation, and Society Research Lab 115, Hexagon (SMV), Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Nikita Sharma
- Department of Biotechnology, Science, Innovation, and Society Research Lab 115, Hexagon (SMV), Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Swati Punetha
- Department of Biotechnology, Science, Innovation, and Society Research Lab 115, Hexagon (SMV), Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Anand Sairam
- Department of Biotechnology, Science, Innovation, and Society Research Lab 115, Hexagon (SMV), Vellore Institute of Technology, Vellore, Tamil Nadu, India
| | - Dixa Vaghela
- Pharmacy Section, L.M. College of Pharmacy, Ahmedabad, Gujarat, India
| | - Narges Dargahi
- Institute for Health and Sport, Victoria University, Melbourne, Australia
| | - Vasso Apostolopoulos
- Institute for Health and Sport, Victoria University, Melbourne, Australia
- Australian Institute for Musculoskeletal Science (AIMSS), Immunology Program, Sunshine Hospital Campus, Saint Albans, Victoria, Australia
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Marques PH, Rodrigues TCV, Santos EH, Bleicher L, Aburjaile FF, Martins FS, Oliveira CJF, Azevedo V, Tiwari S, Soares S. Design of a multi-epitope vaccine (vme-VAC/MST-1) against cholera and vibriosis based on reverse vaccinology and immunoinformatics approaches. J Biomol Struct Dyn 2023:1-16. [PMID: 38112302 DOI: 10.1080/07391102.2023.2293256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 11/25/2023] [Indexed: 12/21/2023]
Abstract
Vibriosis and cholera are serious diseases distributed worldwide and caused by six marine bacteria of the Vibrio genus. Thousands of deaths occur each year due to these illnesses, necessitating the development of new preventive measures. Presently, the existing cholera vaccine demonstrates an effectiveness of approximately 60%. Here we describe a new multi-epitope vaccine, 'vme-VAC/MST-1' based on vaccine targets identified by reverse vaccinology and epitopes predicted by immunoinformatics, two currently effective tools for predicting new vaccines for bacterial pathogens. The vaccine was designed to combat vibriosis and cholera by incorporating epitopes predicted for CTL, HTL, and B cells. These epitopes were identified from six vaccine targets revealed through subtractive genomics, combined with reverse vaccinology, and were further filtered using immunoinformatics approaches based on their predicted immunogenicity. To construct the vaccine, 28 epitopes (24 CTL/B and 4 HTL/B) were linked to the sequence of the cholera toxin B subunit adjuvant. In silico analyses indicate that the resulting immunogen is stable, soluble, non-toxic, and non-allergenic. Furthermore, it exhibits no homology to the host and demonstrates a strong capacity to elicit innate, B-cell, and T-cell immune responses. Our analysis suggests that it is likely to elicit immune reactions mediated through the TLR5 pathway, as evidenced by the molecular docking of the vaccine with the receptor, which revealed high affinity and a favorable reaction. Thus, vme-VAC/MST-1 is predicted to be a safe and effective solution against pathogenic Vibrio spp. However, further experimental analyses are required to measure the vaccine's effects In vivo.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Pedro Henrique Marques
- Institute of Biological Sciences, Post-graduate Interunits Program in Bioinformatics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
- Department of Preventive Veterinary Medicine, School of Veterinary Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Thais Cristina Vilela Rodrigues
- Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Eduardo Horta Santos
- Institute of Biological Sciences, Post-graduate Interunits Program in Bioinformatics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Lucas Bleicher
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Flavia Figueira Aburjaile
- Department of Preventive Veterinary Medicine, School of Veterinary Medicine, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Flaviano S Martins
- Department of Microbiology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Carlo Jose Freire Oliveira
- Department of Microbiology, Immunology and Parasitology, Institute of Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil
| | - Vasco Azevedo
- Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Sandeep Tiwari
- Institute of Biology, Federal University of Bahia, Salvador, BA, Brazil
- Institute of Health Sciences, Federal University of Bahia, Salvador, BA, Brazil
| | - Siomar Soares
- Department of Microbiology, Immunology and Parasitology, Institute of Biological Sciences, Federal University of Triângulo Mineiro, Uberaba, MG, Brazil
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23
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Mao Y, Chen Z, Lu Y, Cao KF, Wu Y, Hu HY. Inactivation of Bacteria in Water by Ferrate(VI): Efficiency and Mechanisms. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:20893-20904. [PMID: 38032700 DOI: 10.1021/acs.est.3c05118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Ferrate (Fe(VI)) is an emerging green disinfectant and has received increasing attention nowadays. This study conducted systematic analyses of Fe(VI) disinfection on six typical bacteria in different water matrices. The results showed that Fe(VI) was more effective in inactivating Gram-negative (G-) bacteria than Gram-positive (G+) bacteria, and the disinfection performance of Fe(VI) was better in a phosphate buffer than that in a borate buffer and secondary effluent. The inactivation rate constants of G- bacteria were significantly higher than those of G+ bacteria. The cell membrane damage of G- bacteria was also more severe than that of G+ bacteria after Fe(VI) treatment. The cell wall structure, especially cell wall thickness, might account for the difference of the inactivation efficiency between G- bacteria and G+ bacteria. Moreover, it is revealed that Fe(VI) primarily reacted with proteins rather than other biological molecules (i.e., phospholipids, peptidoglycan, and lipopolysaccharide). This was further evidenced by the reduction of bacterial autofluorescence due to the destruction of bacterial proteins during Fe(VI) inactivation. Overall, this study advances the understanding of Fe(VI) disinfection mechanisms and provides valuable information for the Fe(VI) application in water disinfection.
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Affiliation(s)
- Yu Mao
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Beijing Laboratory for Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing 100084, P. R. China
| | - Zhuo Chen
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Beijing Laboratory for Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing 100084, P. R. China
| | - Yun Lu
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Beijing Laboratory for Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing 100084, P. R. China
| | - Ke-Fan Cao
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Beijing Laboratory for Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing 100084, P. R. China
| | - Yinhu Wu
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Beijing Laboratory for Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing 100084, P. R. China
| | - Hong-Ying Hu
- Environmental Simulation and Pollution Control State Key Joint Laboratory, State Environmental Protection Key Laboratory of Microorganism Application and Risk Control (SMARC), Beijing Laboratory for Environmental Frontier Technologies, School of Environment, Tsinghua University, Beijing 100084, P. R. China
- Research Institute for Environmental Innovation (Suzhou), Tsinghua, Suzhou 215163, P. R. China
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24
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Semenza JC, Ko AI. Waterborne Diseases That Are Sensitive to Climate Variability and Climate Change. N Engl J Med 2023; 389:2175-2187. [PMID: 38055254 DOI: 10.1056/nejmra2300794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Affiliation(s)
- Jan C Semenza
- From the Heidelberg Institute of Global Health, University of Heidelberg, Heidelberg, Germany (J.C.S.); the Department of Public Health and Clinical Medicine, Section of Sustainable Health, Umeå University, Umeå, Sweden (J.C.S.); the Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT (A.I.K.); and Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil (A.I.K.)
| | - Albert I Ko
- From the Heidelberg Institute of Global Health, University of Heidelberg, Heidelberg, Germany (J.C.S.); the Department of Public Health and Clinical Medicine, Section of Sustainable Health, Umeå University, Umeå, Sweden (J.C.S.); the Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT (A.I.K.); and Instituto Gonçalo Moniz, Fundação Oswaldo Cruz, Salvador, Brazil (A.I.K.)
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25
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Tarnas MC, Al-Dheeb N, Zaman MH, Parker DM. Association between air raids and reported incidence of cholera in Yemen, 2016-19: an ecological modelling study. Lancet Glob Health 2023; 11:e1955-e1963. [PMID: 37973343 DOI: 10.1016/s2214-109x(23)00272-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 05/30/2023] [Accepted: 06/05/2023] [Indexed: 11/19/2023]
Abstract
BACKGROUND Yemen continues to endure cholera outbreaks during ongoing conflict and destructive environmental events. Air raids have been used throughout the conflict to target military and civilian infrastructure. We aimed to assess the association between air raids and cholera incidence while taking into account geographical, environmental, economic, and demographic factors that drive outbreaks. METHODS In this ecological modelling study, we used data from Sept 12, 2016, to Dec 29, 2019, for the number of air raids, vegetation coverage, surface water, precipitation, temperature, economic variables, and cholera case and population data to model the association between conflict and the weekly incidence of cholera (per 100 000 people) in Yemen. Data were transformed into weekly intervals and governorates were categorised according to air raid severity (the number of raids in the previous 3 months). We used a negative binomial generalised additive model that accounted for geographical location and environmental, temporal, economic, and demographic variables to estimate incidence rate ratios for the association between air raid severity and cases of cholera. FINDINGS During the study period, 2 107 912 cases of cholera were reported in Yemen, and a minimum of 11 366 air raids were recorded. After controlling for relevant factors, compared with no air raids, all other levels of air raid severity were significantly associated with cholera incidence. The largest effect was noted in governorates with severe air raid levels (ie, ≥76 during the previous 3 months), which had an incidence rate ratio of 2·06 (95% CI 1·59-2·69; p<0·0001) for cholera compared with governorates with no air raids in the previous 3 months. Economic factors were also significantly associated with increased cholera incidence. INTERPRETATION Air raids were significantly associated with the burden of cholera in Yemen, even after controlling for other relevant factors. Quantification of this relationship further shows that the cholera outbreak is largely a result of human action rather than a natural occurrence, and demonstrates the conflict's devastating effects on health. Our findings highlight the need for ceasefire and peacebuilding efforts, as well as infrastructure and economic restoration, to reduce Yemen's cholera burden. FUNDING None. TRANSLATION For the Arabic translation of the abstract see Supplementary Materials section.
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Affiliation(s)
- Maia C Tarnas
- Department of Population Health and Disease Prevention, University of California, Irvine, Irvine, CA, USA.
| | | | - Muhammad H Zaman
- Department of Biomedical Engineering, Boston University, Boston, MA, USA; Center on Forced Displacement, Boston University, Boston, MA, USA
| | - Daniel M Parker
- Department of Population Health and Disease Prevention, University of California, Irvine, Irvine, CA, USA; Department of Epidemiology & Biostatistics, University of California, Irvine, Irvine, CA, USA
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26
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Hoque MM, Noorian P, Espinoza-Vergara G, Adhikary S, To J, Rice SA, McDougald D. Increased iron utilization and oxidative stress tolerance in a Vibrio cholerae flrA mutant confers resistance to amoeba predation. Appl Environ Microbiol 2023; 89:e0109523. [PMID: 37882527 PMCID: PMC10686080 DOI: 10.1128/aem.01095-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 09/15/2023] [Indexed: 10/27/2023] Open
Abstract
IMPORTANCE Persistence of V. cholerae in the aquatic environment contributes to the fatal diarrheal disease cholera, which remains a global health burden. In the environment, bacteria face predation pressure by heterotrophic protists such as the free-living amoeba A. castellanii. This study explores how a mutant of V. cholerae adapts to acquire essential nutrients and survive predation. Here, we observed that up-regulation of iron acquisition genes and genes regulating resistance to oxidative stress enhances pathogen fitness. Our data show that V. cholerae can defend predation to overcome nutrient limitation and oxidative stress, resulting in an enhanced survival inside the protozoan hosts.
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Affiliation(s)
- M. Mozammel Hoque
- Australian Institute for Microbiology and Infection, University of Technology Sydney, Sydney, NSW, Australia
| | - Parisa Noorian
- Australian Institute for Microbiology and Infection, University of Technology Sydney, Sydney, NSW, Australia
| | - Gustavo Espinoza-Vergara
- Australian Institute for Microbiology and Infection, University of Technology Sydney, Sydney, NSW, Australia
| | - Srijon Adhikary
- Australian Institute for Microbiology and Infection, University of Technology Sydney, Sydney, NSW, Australia
| | - Joyce To
- Australian Institute for Microbiology and Infection, University of Technology Sydney, Sydney, NSW, Australia
| | - Scott A. Rice
- Australian Institute for Microbiology and Infection, University of Technology Sydney, Sydney, NSW, Australia
- CSIRO Animal, Food and Health Sciences, Westmead, NSW, Australia
| | - Diane McDougald
- Australian Institute for Microbiology and Infection, University of Technology Sydney, Sydney, NSW, Australia
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27
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Wang K, Lu H, Zou M, Wang G, Zhao J, Huang X, Ren F, Hu H, Huang J, Min X. DegS protease regulates antioxidant capacity and adaptability to oxidative stress environment in Vibrio cholerae. Front Cell Infect Microbiol 2023; 13:1290508. [PMID: 38053530 PMCID: PMC10694293 DOI: 10.3389/fcimb.2023.1290508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 11/06/2023] [Indexed: 12/07/2023] Open
Abstract
Adaptation to oxidative stress is critical for survival of Vibrio cholerae in aquatic ecosystems and hosts. DegS activates the σE envelope stress response. We have previously revealed that DegS may be involved in regulating the oxidative stress response. In this study, we demonstrated that deletion of the degS gene attenuates the antioxidant capacity of V. cholerae. In addition, our results further revealed that the regulation of antioxidant capacity by DegS in V. cholerae could involve the cAMP-CRP complex, which regulates rpoS. XthA is an exonuclease that repairs oxidatively damaged cells and affects the bacterial antioxidant capacity. qRT-PCR showed that DegS, σE, cAMP, CRP, and RpoS positively regulate xthA gene transcription. XthA overexpression partially compensates for antioxidant deficiency in the degS mutant. These results suggest that DegS affects the antioxidant capacity of V.cholerae by regulating xthA expression via the cAMP-CRP-RpoS pathway. In a mouse intestinal colonization experiment, our data showed that V.cholerae degS, rpoE, and rpoS gene deletions were associated with significantly reduced resistance to oxidative stress and the ability to colonize the mouse intestine. In conclusion, these findings provide new insights into the regulation of antioxidant activity by V.cholerae DegS.
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Affiliation(s)
- Kaiying Wang
- Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
- School of Laboratory Medicine, Zunyi Medical University, Zunyi, Guizhou, China
| | - Huifang Lu
- Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
- School of Laboratory Medicine, Zunyi Medical University, Zunyi, Guizhou, China
| | - Mei Zou
- Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
- School of Laboratory Medicine, Zunyi Medical University, Zunyi, Guizhou, China
| | - Guangli Wang
- Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
- School of Laboratory Medicine, Zunyi Medical University, Zunyi, Guizhou, China
| | - Jiajun Zhao
- Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
- School of Laboratory Medicine, Zunyi Medical University, Zunyi, Guizhou, China
| | - Xiaoyu Huang
- Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
- School of Laboratory Medicine, Zunyi Medical University, Zunyi, Guizhou, China
| | - Fangyu Ren
- Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
- School of Laboratory Medicine, Zunyi Medical University, Zunyi, Guizhou, China
| | - Huaqin Hu
- Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
- School of Laboratory Medicine, Zunyi Medical University, Zunyi, Guizhou, China
| | - Jian Huang
- Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
- School of Laboratory Medicine, Zunyi Medical University, Zunyi, Guizhou, China
| | - Xun Min
- Department of Laboratory Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou, China
- School of Laboratory Medicine, Zunyi Medical University, Zunyi, Guizhou, China
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Severin GB, Ramliden MS, Ford KC, Van Alst AJ, Sanath-Kumar R, Decker KA, Hsueh BY, Chen G, Yoon SH, Demey LM, O'Hara BJ, Rhoades CR, DiRita VJ, Ng WL, Waters CM. Activation of a Vibrio cholerae CBASS anti-phage system by quorum sensing and folate depletion. mBio 2023; 14:e0087523. [PMID: 37623317 PMCID: PMC10653837 DOI: 10.1128/mbio.00875-23] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 07/13/2023] [Indexed: 08/26/2023] Open
Abstract
IMPORTANCE To counteract infection with phage, bacteria have evolved a myriad of molecular defense systems. Some of these systems initiate a process called abortive infection, in which the infected cell kills itself to prevent phage propagation. However, such systems must be inhibited in the absence of phage infection to prevent spurious death of the host. Here, we show that the cyclic oligonucleotide based anti-phage signaling system (CBASS) accomplishes this by sensing intracellular folate molecules and only expressing this system in a group. These results enhance our understanding of the evolution of the seventh Vibrio cholerae pandemic and more broadly how bacteria defend themselves against phage infection.
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Affiliation(s)
- Geoffrey B. Severin
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan, USA
| | - Miriam S. Ramliden
- Department of Molecular Biology and Microbiology, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Kathryne C. Ford
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
| | - Andrew J. Van Alst
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
| | - Ram Sanath-Kumar
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
| | - Kaitlin A. Decker
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
| | - Brian Y. Hsueh
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
| | - Gong Chen
- Department of Molecular Biology and Microbiology, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Soo Hun Yoon
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
| | - Lucas M. Demey
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
| | - Brendan J. O'Hara
- Department of Molecular Biology and Microbiology, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Christopher R. Rhoades
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
| | - Victor J. DiRita
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
| | - Wai-Leung Ng
- Department of Molecular Biology and Microbiology, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Christopher M. Waters
- Department of Microbiology and Molecular Genetics, Michigan State University, East Lansing, Michigan, USA
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Okada K, Roobthaisong A, Hamada S. Flagella-related gene mutations in Vibrio cholerae during extended cultivation in nutrient-limited media impair cell motility and prolong culturability. mSystems 2023; 8:e0010923. [PMID: 37642466 PMCID: PMC10654082 DOI: 10.1128/msystems.00109-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 04/19/2023] [Indexed: 08/31/2023] Open
Abstract
IMPORTANCE Vibrio cholerae undergoes a transition to a viable but non-culturable (VNC) state when subjected to various environmental stresses. We showed here that flagellar motility was involved in the development of the VNC state of V. cholerae. In this study, motility-defective isolates with mutations in various flagella-related genes, but not motile isolates, were predominantly obtained under the stress of long-term batch culture. Other genomic regions were highly conserved, suggesting that the mutations were selective. During the stationary phase of long-term culture, V. cholerae isolates with mutations in the acetate kinase and flagella-related genes were predominant. This study suggests that genes involved in specific functions in V. cholerae undergo mutations under certain environmental conditions.
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Affiliation(s)
- Kazuhisa Okada
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
- Thailand-Japan Research Collaboration Center on Emerging and Re-emerging Infections, National Institute of Health, Nonthaburi, Thailand
| | - Amonrattana Roobthaisong
- Thailand-Japan Research Collaboration Center on Emerging and Re-emerging Infections, National Institute of Health, Nonthaburi, Thailand
| | - Shigeyuki Hamada
- Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan
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Hraib M, Alaidi S, Jouni S, Saad S, Muna M, Alaidi N, Alshehabi Z. Cholera: An Overview with Reference to the Syrian Outbreak. Avicenna J Med 2023; 13:199-205. [PMID: 38144913 PMCID: PMC10736186 DOI: 10.1055/s-0043-1775762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2023] Open
Abstract
Cholera is an acute type of diarrheal disease caused by intestinal infection with the toxin-producing bacteria Vibrio cholerae. The disease is still endemic in almost 69 countries, accounting for around 2.86 million cases and 95,000 deaths annually. Cholera is associated with poor infrastructure, and lack of access to sanitation and clean drinking water. The current cholera outbreak in Syria is associated with more than 10 years of conflict, which has devastated infrastructures and health services. There were 132,782 suspected cases reported between August 25, 2022 and May 20, 2023 in all 14 governorates, including 104 associated deaths. The recent earthquake in the region has complicated the situation, with an increase in cholera cases, and hindrance to a response to the disease. Climate change has driven a number of large cholera outbreaks around the world this year. The World Health Organization prequalifies three oral cholera vaccines. Cholera treatment mainly depends on rehydration, with the use of antibiotics in more severe infections. This review gives an overview of cholera bacteriology, pathogenesis, epidemiology, clinical manifestations, diagnosis, management, and prevention in light of global climate change and the ongoing outbreak in Syria, which poses a significant public health threat that requires urgent attention.
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Affiliation(s)
- Munawar Hraib
- Faculty of Medicine, Tishreen University, Latakia, Syria
| | - Sara Alaidi
- Faculty of Medicine, Tishreen University, Latakia, Syria
| | - Sarah Jouni
- Faculty of Medicine, Tishreen University, Latakia, Syria
| | - Sana Saad
- Faculty of Medicine, Tishreen University, Latakia, Syria
| | - Mohammad Muna
- Faculty of Medicine, Tishreen University, Latakia, Syria
| | - Nour Alaidi
- Faculty of Medicine, Tishreen University, Latakia, Syria
| | - Zuheir Alshehabi
- Department of Pathology, Tishreen University Hospital, Latakia, Syria
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31
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Akhtar M, Basher SR, Nizam NN, Hossain L, Bhuiyan TR, Qadri F, Lundgren A. T helper cell responses in adult diarrheal patients following natural infection with enterotoxigenic Escherichia coli are primarily of the Th17 type. Front Immunol 2023; 14:1220130. [PMID: 37809062 PMCID: PMC10552643 DOI: 10.3389/fimmu.2023.1220130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 08/31/2023] [Indexed: 10/10/2023] Open
Abstract
Background Infection with enterotoxigenic Escherichia coli (ETEC) gives rise to IgA antibodies against both the heat labile toxin (LT) and colonization factors (CFs), which are considered to synergistically protect against ETEC diarrhea. Since the development of ETEC-specific long lived plasma cells and memory B cells is likely to be dependent on T helper (Th) cells, we investigated if natural ETEC diarrhea elicits ETEC-specific Th cells and their relation to IgA responses. Methods Th cell subsets were analyzed in adult Bangladeshi patients hospitalized due to ETEC diarrhea by flow cytometric analysis of peripheral blood mononuclear cells (PBMCs) isolated from blood collected day 2, 7, 30 and 90 after hospitalization as well as in healthy controls. The LT- and CF-specific Th responses were determined by analysis of IL-17A and IFN-γ in antigen stimulated PBMC cultures using ELISA. ETEC-specific IgA secreted by circulating antibody secreting cells (plasmablasts) were analyzed by using the antibodies in lymphocyte supernatants (ALS) ELISA-based method and plasma IgA was also measured by ELISA. Results ETEC patients mounted significant ALS and plasma IgA responses against LTB and CFs on day 7 after hospitalization. ETEC patients had significantly elevated proportions of memory Th cells with a Th17 phenotype (CCR6+CXCR3-) in blood compared to controls, while frequencies of Th1 (CCR6-CXCR3+) or Th2 (CCR6-CXCR3-) cells were not increased. Antigen stimulation of PBMCs revealed IL-17A responses to LT, most clearly observed after stimulation with double mutant heat labile toxin (dmLT), but also with LT B subunit (LTB), and to CS6 in samples from patients with LT+ or CS6+ ETEC bacteria. Some individuals also mounted IFN-γ responses to dmLT and LTB. Levels of LTB specific IgA antibodies in ALS, but not plasma samples correlated with both IL-17A (r=0.5, p=0.02) and IFN-γ (r=0.6, p=0.01) responses to dmLT. Conclusions Our results show that ETEC diarrhea induces T cell responses, which are predominantly of the Th17 type. The correlations between IL-17A and IFN-g and intestine-derived plasmablast responses support that Th responses may contribute to the development of protective IgA responses against ETEC infection. These observations provide important insights into T cell responses that need to be considered in the evaluation of advanced ETEC vaccine candidates.
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Affiliation(s)
- Marjahan Akhtar
- Infectious Diseases Divison, icddr, b (International Centre for Diarrhoeal Disease Research, Bangladesh), Dhaka, Bangladesh
| | - Salima Raiyan Basher
- Infectious Diseases Divison, icddr, b (International Centre for Diarrhoeal Disease Research, Bangladesh), Dhaka, Bangladesh
| | - Nuder Nower Nizam
- Infectious Diseases Divison, icddr, b (International Centre for Diarrhoeal Disease Research, Bangladesh), Dhaka, Bangladesh
| | - Lazina Hossain
- Infectious Diseases Divison, icddr, b (International Centre for Diarrhoeal Disease Research, Bangladesh), Dhaka, Bangladesh
| | - Taufiqur Rahman Bhuiyan
- Infectious Diseases Divison, icddr, b (International Centre for Diarrhoeal Disease Research, Bangladesh), Dhaka, Bangladesh
| | - Firdausi Qadri
- Infectious Diseases Divison, icddr, b (International Centre for Diarrhoeal Disease Research, Bangladesh), Dhaka, Bangladesh
| | - Anna Lundgren
- Department of Microbiology and Immunology, Institute of Biomedicine, University of Gothenburg, Gothenburg, Sweden
- Department of Clinical Immunology and Transfusion Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden
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Lee D, Choi H, Son S, Bae J, Joo J, Kim DW, Kim EJ. Expression of Cholera Toxin (CT) and the Toxin Co-Regulated Pilus (TCP) by Variants of ToxT in Vibrio cholerae Strains. Toxins (Basel) 2023; 15:507. [PMID: 37624264 PMCID: PMC10467113 DOI: 10.3390/toxins15080507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/11/2023] [Accepted: 08/15/2023] [Indexed: 08/26/2023] Open
Abstract
The expression of the two major virulence genes of Vibrio cholerae-tcpA (the major subunit of the toxin co-regulated pilus) and ctxAB (cholera toxin)-is regulated by the ToxR regulon, which is triggered by environmental stimuli during infection within the human small intestine. Special culture methods are required to induce the expression of virulence genes in V. cholerae in the laboratory setting. In the present study, induction of the expression of virulence genes by two point mutations (65th and 139th amino acids) in toxT, which is produced by the ToxR regulon and activates the transcription of the virulence genes in V. cholerae, under laboratory culture conditions has been investigated. Each of the four toxT alleles assessed displayed different transcriptional activator functions in a given V. cholerae strain. Although the ToxR regulon has been known to not be expressed by El Tor biotype V. cholerae strains cultured under standard laboratory conditions, the variant toxT alleles that we assessed in this study enabled the expression virulence genes in El Tor biotype strains grown under simple culture conditions comprising shake culture in LB medium, suggesting that the regulation of virulence gene expression may be regulated more complexly than previously thought and may involve additional factors beyond the production of ToxT by the ToxR regulon.
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Affiliation(s)
- Donghyun Lee
- Department of Pharmacy, College of Pharmacy, Hanyang University, Ansan 15588, Republic of Korea
- Institute of Pharmacological Research, Hanyang University, Ansan 15588, Republic of Korea
| | - Hunseok Choi
- Department of Pharmacy, College of Pharmacy, Hanyang University, Ansan 15588, Republic of Korea
- Institute of Pharmacological Research, Hanyang University, Ansan 15588, Republic of Korea
| | - Seonghyeon Son
- Department of Pharmacy, College of Pharmacy, Hanyang University, Ansan 15588, Republic of Korea
- Institute of Pharmacological Research, Hanyang University, Ansan 15588, Republic of Korea
| | - Jonghyun Bae
- Department of Pharmacy, College of Pharmacy, Hanyang University, Ansan 15588, Republic of Korea
- Institute of Pharmacological Research, Hanyang University, Ansan 15588, Republic of Korea
| | - Jayun Joo
- Department of Pharmacy, College of Pharmacy, Hanyang University, Ansan 15588, Republic of Korea
- Institute of Pharmacological Research, Hanyang University, Ansan 15588, Republic of Korea
| | - Dong Wook Kim
- Department of Pharmacy, College of Pharmacy, Hanyang University, Ansan 15588, Republic of Korea
- Institute of Pharmacological Research, Hanyang University, Ansan 15588, Republic of Korea
| | - Eun Jin Kim
- Department of Pharmacy, College of Pharmacy, Hanyang University, Ansan 15588, Republic of Korea
- Institute of Pharmacological Research, Hanyang University, Ansan 15588, Republic of Korea
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33
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Xu X, Qian J, Ke Q, Wang Y, Liu Y, Bao D. Bacteremia Caused by a Serotype Ob5 Vibrio cholerae Strain in a Cirrhotic Patient in China. Microbiol Spectr 2023; 11:e0205423. [PMID: 37378569 PMCID: PMC10434239 DOI: 10.1128/spectrum.02054-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 06/14/2023] [Indexed: 06/29/2023] Open
Abstract
The increasing incidence of non-O1/non-O139 Vibrio cholerae (NOVC) has been observed worldwide. However, septicemia caused by NOVC remains a rare condition that has received limited attention. Currently, there are no established treatment guidelines for bloodstream infections caused by NOVC, and the understanding of this condition mainly relies on individual case reports. Although NOVC bacteremia can be fatal in a small percentage of cases, knowledge about its microbiological features remains limited. Here, we present a case of V. cholerae septicemia caused by NOVC in a 46-year-old man with chronic viral hepatitis and liver cirrhosis. The isolated strain, named V. cholerae VCH20210731 and classified as a new sequence type (ST), ST1553, was found to be susceptible to most of the antimicrobial agents tested. O-antigen serotyping of V. cholerae VCH20210731 revealed that it belonged to serotype Ob5. Interestingly, the ctxAB genes, which are typically associated with V. cholerae, were absent in VCH20210731. However, the strain possessed 25 other potential virulence genes, such as hlyA, luxS, hap, and rtxA. The resistome of V. cholerae VCH20210731 included several genes, including qnrVC4, crp, almG, and parE. Nevertheless, susceptibility testing demonstrated that the isolate was susceptible to most of the antimicrobial agents tested. Phylogenetic analysis indicated that the closest strain to VCH20210731 was strain 120 from Russia, differing by 630 single-nucleotide polymorphisms (SNPs). Our findings contribute to the understanding of the genomic epidemiological characteristics and antibiotic resistance mechanisms of this invasive bacterial pathogen. IMPORTANCE This study highlights the discovery of a novel ST1553 V. cholerae strain in China, providing valuable insights into the genomic epidemiology and global transmission dynamics of V. cholerae. It is important to note that clinical presentations of NOVC bacteremia can vary significantly, and the isolates demonstrate genetic diversity. Consequently, health care professionals and public health experts should remain vigilant about the potential for infection with this pathogen, particularly considering the elevated prevalence of liver disease in China.
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Affiliation(s)
- Xiaohong Xu
- Department of Clinical Laboratory, Sanmen People’s Hospital, Taizhou, Zhejiang, China
| | - Jiao Qian
- Department of Clinical Laboratory, Taizhou Hospital of Zhejiang Province, Wenzhou Medical University, Taizhou, Zhejiang, China
- Key Laboratory of System Medicine and Precision Diagnosis and Treatment of Taizhou, Taizhou, Zhejiang, China
| | - Qinjian Ke
- Department of Clinical Laboratory, Sanmen People’s Hospital, Taizhou, Zhejiang, China
| | - Yizhang Wang
- Department of Clinical Laboratory, Sanmen People’s Hospital, Taizhou, Zhejiang, China
| | - Yanchao Liu
- Department of Laboratory Medicine, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Key Laboratory of Clinical In Vitro Diagnostic Techniques of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Danni Bao
- Department of Clinical Laboratory, Sanmen People’s Hospital, Taizhou, Zhejiang, China
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Li X, Li X, Zhang H, Kan B, Fan F. VP3 Phage Combined with High Salt Promotes the Lysis of Biofilm-Associated Vibrio cholerae. Viruses 2023; 15:1639. [PMID: 37631982 PMCID: PMC10458087 DOI: 10.3390/v15081639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/22/2023] [Accepted: 07/24/2023] [Indexed: 08/27/2023] Open
Abstract
Cholera, caused by pathogenic Vibrio cholerae, poses a significant public health risk through water and food transmission. Biofilm-associated V. cholerae plays a crucial role in seasonal cholera outbreaks as both a reservoir in aquatic environments and a direct source of human infection. Although VP3, a lytic phage, shows promise in eliminating planktonic V. cholerae from the aquatic environment, its effectiveness against biofilm-associated V. cholerae is limited. To address this limitation, our proposed approach aims to enhance the efficacy of VP3 in eliminating biofilm-associated V. cholerae by augmenting the availability of phage receptors on the surface of Vibrio cholerae. TolC is a receptor of VP3 and a salt efflux pump present in many bacteria. In this study, we employed NaCl as an enhancer to stimulate TolC expression and observed a significant enhancement of TolC expression in both planktonic and biofilm cells of V. cholerae. This enhancement led to improved adsorption of VP3. Importantly, our findings provide strong evidence that high salt concentrations combined with VP3 significantly improve the elimination of biofilm-associated V. cholerae. This approach offers a potential strategy to eliminate biofilm-formation bacteria by enhancing phage-host interaction.
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Affiliation(s)
- Xu Li
- School of Light Industry, Beijing Technology and Business University, Beijing 100048, China
| | - Xiaorui Li
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Huayao Zhang
- Department of Epidemiology, School of Public Health, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
| | - Biao Kan
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Fenxia Fan
- State Key Laboratory of Infectious Disease Prevention and Control, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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Liobikienė G, Matiiuk Y, Krikštolaitis R. The concern about main crises such as the Covid-19 pandemic, the war in Ukraine, and climate change's impact on energy-saving behavior. ENERGY POLICY 2023:113678. [PMID: 37366494 PMCID: PMC10288316 DOI: 10.1016/j.enpol.2023.113678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 06/01/2023] [Accepted: 06/11/2023] [Indexed: 06/28/2023]
Abstract
The number of crises experienced around the world forces people to reconsider and reassess various aspects of their lives. The energy crisis caused by the war in Ukraine and uncontrolled climate change revealed the importance of energy-saving behavior. Thus, the aim of this paper is to analyze the concerns about current crises such as the Covid-19 pandemic, the war in Ukraine, and climate change's impact on energy-saving behavior and changes in environmental concern. Referring to the survey conducted in Lithuania in 2022, where 1000 respondents participated, the results revealed that the war in Ukraine was the most concerning problem. The level of climate change concern was slightly lower. Meanwhile, the Covid-19 pandemic was the least important problem in Lithuania in 2022. Furthermore, respondents stated that the Covid-19 pandemic contributed to the changes in environmental concern and energy-saving actions more than the war in Ukraine did. Meanwhile, the Generalized Linear Model results revealed that only the war in Ukraine positively and significantly influenced energy-saving behavior. The Covid-19 pandemic concern negatively affected energy-saving behavior, while the climate change concern factor affected it indirectly, as the interaction of attitudes toward energy consumption. Thus, this study revealed the main aspect of and how to encourage energy-saving behavior in the context of the main current crises.
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Affiliation(s)
- Genovaitė Liobikienė
- Department of Environmental Sciences, Vytautas Magnus University, Vileikos st. 8, LT-44404, Kaunas, Lithuania
| | - Yuliia Matiiuk
- Department of Environmental Sciences, Vytautas Magnus University, Vileikos st. 8, LT-44404, Kaunas, Lithuania
| | - Ričardas Krikštolaitis
- Department of Mathematics and Statistics, Vytautas Magnus University, Universiteto str. 10, Akademija, LT, 53361, Kaunas Dist, Lithuania
- Lithuanian Energy Institute, Breslaujos str. 3, LT-44403, Kaunas, Lithuania
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Yu S, Zhang L, Wang A, Jin Y, Zhou D. Nanobodies: the Potential Application in Bacterial Treatment and Diagnosis. Biochem Pharmacol 2023:115640. [PMID: 37315818 DOI: 10.1016/j.bcp.2023.115640] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 06/02/2023] [Accepted: 06/06/2023] [Indexed: 06/16/2023]
Abstract
An infection caused by bacteria is one of the main factors that poses a threat to human health. A recent report from the World Health Organization (WHO) has highlighted that bacteria that cause blood infections have become increasingly drug-resistant. Therefore, it is crucial to research and develop new techniques for detecting and treating these infections. Since their discovery, nanobodies have exhibited numerous outstanding biological properties. They are easy to express, modify, and have high stability, robust permeability and low immunogenicity, all of which indicate their potential as a substitute. Nanobodies have been utilized in a variety of studies on viruses and cancer. This article primarily focuses on nanobodies and introduces their characteristics and application in the diagnosis and treatment of bacterial infections.
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Affiliation(s)
- Siyuan Yu
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Xianyang, China
| | - Lu Zhang
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Xianyang, China; Northwest A&F University Shenzhen Research Institute, Shenzhen, China; Department of Animal Engineering, Yangling Vocational&Technical College, Xianyang, China
| | - Aihua Wang
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Xianyang, China
| | - Yaping Jin
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Xianyang, China; Northwest A&F University Shenzhen Research Institute, Shenzhen, China.
| | - Dong Zhou
- College of Veterinary Medicine, Northwest A&F University, Xianyang, China; Key Laboratory of Animal Biotechnology, Ministry of Agriculture and Rural Affairs, Northwest A&F University, Xianyang, China
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Condinho M, Carvalho B, Cruz A, Pinto SN, Arraiano CM, Pobre V. The role of RNA regulators, quorum sensing and c-di-GMP in bacterial biofilm formation. FEBS Open Bio 2023; 13:975-991. [PMID: 35234364 PMCID: PMC10240345 DOI: 10.1002/2211-5463.13389] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 02/15/2022] [Accepted: 02/28/2022] [Indexed: 11/10/2022] Open
Abstract
Biofilms provide an ecological advantage against many environmental stressors, such as pH and temperature, making it the most common life-cycle stage for many bacteria. These protective characteristics make eradication of bacterial biofilms challenging. This is especially true in the health sector where biofilm formation on hospital or patient equipment, such as respirators, or catheters, can quickly become a source of anti-microbial resistant strains. Biofilms are complex structures encased in a self-produced polymeric matrix containing numerous components such as polysaccharides, proteins, signalling molecules, extracellular DNA and extracellular RNA. Biofilm formation is tightly controlled by several regulators, including quorum sensing (QS), cyclic diguanylate (c-di-GMP) and small non-coding RNAs (sRNAs). These three regulators in particular are fundamental in all stages of biofilm formation; in addition, their pathways overlap, and the significance of their role is strain-dependent. Currently, ribonucleases are also of interest for their potential role as biofilm regulators, and their relationships with QS, c-di-GMP and sRNAs have been investigated. This review article will focus on these four biofilm regulators (ribonucleases, QS, c-di-GMP and sRNAs) and the relationships between them.
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Affiliation(s)
- Manuel Condinho
- Instituto de Tecnologia Química e Biológica António XavierUniversidade Nova de LisboaOeirasPortugal
| | - Beatriz Carvalho
- Instituto de Tecnologia Química e Biológica António XavierUniversidade Nova de LisboaOeirasPortugal
| | - Adriana Cruz
- iBB‐Institute for Bioengineering and Biosciences (IBB)Instituto Superior TécnicoLisboaPortugal
- i4HB‐Institute for Health and BioeconomyInstituto Superior TécnicoLisboaPortugal
| | - Sandra N. Pinto
- iBB‐Institute for Bioengineering and Biosciences (IBB)Instituto Superior TécnicoLisboaPortugal
- i4HB‐Institute for Health and BioeconomyInstituto Superior TécnicoLisboaPortugal
| | - Cecília M. Arraiano
- Instituto de Tecnologia Química e Biológica António XavierUniversidade Nova de LisboaOeirasPortugal
| | - Vânia Pobre
- Instituto de Tecnologia Química e Biológica António XavierUniversidade Nova de LisboaOeirasPortugal
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Montero DA, Vidal RM, Velasco J, George S, Lucero Y, Gómez LA, Carreño LJ, García-Betancourt R, O’Ryan M. Vibrio cholerae, classification, pathogenesis, immune response, and trends in vaccine development. Front Med (Lausanne) 2023; 10:1155751. [PMID: 37215733 PMCID: PMC10196187 DOI: 10.3389/fmed.2023.1155751] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 04/14/2023] [Indexed: 05/24/2023] Open
Abstract
Vibrio cholerae is the causative agent of cholera, a highly contagious diarrheal disease affecting millions worldwide each year. Cholera is a major public health problem, primarily in countries with poor sanitary conditions and regions affected by natural disasters, where access to safe drinking water is limited. In this narrative review, we aim to summarize the current understanding of the evolution of virulence and pathogenesis of V. cholerae as well as provide an overview of the immune response against this pathogen. We highlight that V. cholerae has a remarkable ability to adapt and evolve, which is a global concern because it increases the risk of cholera outbreaks and the spread of the disease to new regions, making its control even more challenging. Furthermore, we show that this pathogen expresses several virulence factors enabling it to efficiently colonize the human intestine and cause cholera. A cumulative body of work also shows that V. cholerae infection triggers an inflammatory response that influences the development of immune memory against cholera. Lastly, we reviewed the status of licensed cholera vaccines, those undergoing clinical evaluation, and recent progress in developing next-generation vaccines. This review offers a comprehensive view of V. cholerae and identifies knowledge gaps that must be addressed to develop more effective cholera vaccines.
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Affiliation(s)
- David A. Montero
- Departamento de Microbiología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - Roberto M. Vidal
- Programa de Microbiología y Micología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Instituto Milenio de Inmunología e Inmunoterapia, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Juliana Velasco
- Unidad de Paciente Crítico, Clínica Hospital del Profesor, Santiago, Chile
- Programa de Formación de Especialista en Medicina de Urgencia, Universidad Andrés Bello, Santiago, Chile
| | - Sergio George
- Programa de Microbiología y Micología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Yalda Lucero
- Programa de Microbiología y Micología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Departamento de Pediatría y Cirugía Infantil, Hospital Dr. Roberto del Rio, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Leonardo A. Gómez
- Departamento de Microbiología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - Leandro J. Carreño
- Instituto Milenio de Inmunología e Inmunoterapia, Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Programa de Inmunología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Richard García-Betancourt
- Programa de Inmunología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Miguel O’Ryan
- Programa de Microbiología y Micología, Instituto de Ciencias Biomédicas, Facultad de Medicina, Universidad de Chile, Santiago, Chile
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Proutière A, Drebes Dörr NC, Bader L, Stutzmann S, Metzger LC, Isaac S, Chiaruttini N, Blokesch M. Sporadic type VI secretion in seventh pandemic Vibrio cholerae. MICROBIOLOGY (READING, ENGLAND) 2023; 169. [PMID: 37134007 DOI: 10.1099/mic.0.001329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Vibrio cholerae is a pathogen that causes disease in millions of people every year by colonizing the small intestine and then secreting the potent cholera toxin. How the pathogen overcomes the colonization barrier created by the host's natural microbiota is, however, still not well understood. In this context, the type VI secretion system (T6SS) has gained considerable attention given its ability to mediate interbacterial killing. Interestingly, and in contrast to non-pandemic or environmental V. cholerae isolates, strains that are causing the ongoing cholera pandemic (7PET clade) are considered T6SS-silent under laboratory conditions. Since this idea was recently challenged, we performed a comparative in vitro study on T6SS activity using diverse strains or regulatory mutants. We show that modest T6SS activity is detectable in most of the tested strains under interbacterial competition conditions. The system's activity was also observed through immunodetection of the T6SS tube protein Hcp in culture supernatants, a phenotype that can be masked by the strains' haemagglutinin/protease. We further investigated the low T6SS activity within the bacterial populations by imaging 7PET V. cholerae at the single-cell level. The micrographs showed the production of the machinery in only a small fraction of cells within the population. This sporadic T6SS production was higher at 30 °C than at 37 °C and occurred independently of the known regulators TfoX and TfoY but was dependent on the VxrAB two-component system. Overall, our work provides new insight into the heterogeneity of T6SS production in populations of 7PET V. cholerae strains in vitro and provides a possible explanation of the system's low activity in bulk measurements.
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Affiliation(s)
- Alexis Proutière
- Laboratory of Molecular Microbiology, Global Health Institute, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Natália C Drebes Dörr
- Laboratory of Molecular Microbiology, Global Health Institute, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Loriane Bader
- Laboratory of Molecular Microbiology, Global Health Institute, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Sandrine Stutzmann
- Laboratory of Molecular Microbiology, Global Health Institute, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Lisa C Metzger
- Laboratory of Molecular Microbiology, Global Health Institute, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Sandrine Isaac
- Laboratory of Molecular Microbiology, Global Health Institute, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Nicolas Chiaruttini
- Bioimaging and Optics Platform (PT-BIOP), School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Melanie Blokesch
- Laboratory of Molecular Microbiology, Global Health Institute, School of Life Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
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Buliva E, Elnossery S, Okwarah P, Tayyab M, Brennan R, Abubakar A. Cholera prevention, control strategies, challenges and World Health Organization initiatives in the Eastern Mediterranean Region: A narrative review. Heliyon 2023; 9:e15598. [PMID: 37153427 PMCID: PMC10160509 DOI: 10.1016/j.heliyon.2023.e15598] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 02/01/2023] [Accepted: 04/17/2023] [Indexed: 05/09/2023] Open
Abstract
The resurgence of cholera is presenting unusual challenges in the Eastern Mediterranean Region (EMR), where it is considered endemic in nine-member states. The risk of a cholera outbreak spreading to non-endemic countries remains high. We discuss the regional trends of cholera, regional burden, and challenges with a focus on World Health Organization (WHO) initiatives in the region that could be useful in preventing and controlling the disease in similar contexts. Despite significant progress in the control of cholera worldwide, the disease continues to be a major public health problem across the region, where it constitutes both an emerging and re-emerging threat. Recurring cholera outbreaks are an indication of deprived water and sanitation conditions as well as weak health systems, contributing to the transmission and spread of the cholera infection. We note that despite the challenges in eliminating cholera in the region, effective implementation of the proposed WHO EMR Strategic framework, among other measures, could sustain the region's cholera prevention, preparedness, and response needs.
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Affiliation(s)
- Evans Buliva
- World Health Organization (WHO) Regional Office for the Eastern Mediterranean, Cairo, Egypt
| | - Sherein Elnossery
- World Health Organization (WHO) Regional Office for the Eastern Mediterranean, Cairo, Egypt
| | - Patrick Okwarah
- Amref International University (AMIU), School of Public Health, Nairobi, Kenya
| | - Muhammad Tayyab
- World Health Organization (WHO) Regional Office for the Eastern Mediterranean, Cairo, Egypt
| | - Richard Brennan
- World Health Organization (WHO) Regional Office for the Eastern Mediterranean, Cairo, Egypt
| | - Abdinasir Abubakar
- World Health Organization (WHO) Regional Office for the Eastern Mediterranean, Cairo, Egypt
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Akel M, Sakr F, Haddad C, Hajj A, Sacre H, Zeenny RM, Safwan J, Salameh P. Knowledge, Attitude, and Practices of the General Population toward the Old-New Outbreak of Cholera in a Developing Country. Trop Med Infect Dis 2023; 8:tropicalmed8040236. [PMID: 37104361 PMCID: PMC10144007 DOI: 10.3390/tropicalmed8040236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/14/2023] [Accepted: 04/17/2023] [Indexed: 04/28/2023] Open
Abstract
Background: In October 2022, the first case of cholera since 1993 was recorded in Lebanon. This study aimed to develop and validate a tool to explore the knowledge, attitudes, and practices (KAP) toward cholera infection and its prevention among the general population in Lebanon and identify the associated factors related to the KAP assessment to guide prevention and awareness strategies. The nation's already precarious healthcare system might become overwhelmed by the response to the cholera outbreak. Therefore, evaluating the level of cholera-related KAP among the Lebanese population is crucial since it directly affects the disease's treatment, control, and prevention. Methods: This online cross-sectional study was carried out between October and November 2022 during the cholera outbreak in Lebanon. Snowball sampling was used to recruit 448 adults living in Lebanon. Results: The suggested KAP scales had adequate structural and convergent validity and were internally consistent. The disease knowledge was inversely associated with the reluctance to receive educational information (β = -1.58) and cigarette smoking (β = -1.31) but positively associated with the female gender (β = 1.74) and awareness of vaccine availability and efficacy (β = 1.34). For attitude, healthcare professionals were less frightened than others (β = 2.69). Better practices were related to better knowledge (β = 0.43), while inadequate practices were associated with getting information from social media (β = -2.47). Conclusions: This study could identify notable gaps in the knowledge, attitudes, and practices, which varied according to participant characteristics. Cholera incidence can be reduced by improved community education and training, increased access to safe water, sanitation, and hygiene amenities, and changes in behavior. These findings warrant additional actions by public health stakeholders and governmental authorities to promote better practices and curb disease transmission.
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Affiliation(s)
- Marwan Akel
- School of Pharmacy, Lebanese International University, Beirut P.O. Box 146404, Lebanon
- INSPECT-LB (Institut National de Santé Publique, d'Épidémiologie Clinique et de Toxicologie-Liban), Beirut P.O. Box 12109, Lebanon
- School of Education, Lebanese International University, Beirut P.O. Box 146404, Lebanon
| | - Fouad Sakr
- School of Pharmacy, Lebanese International University, Beirut P.O. Box 146404, Lebanon
- INSPECT-LB (Institut National de Santé Publique, d'Épidémiologie Clinique et de Toxicologie-Liban), Beirut P.O. Box 12109, Lebanon
- UMR U955 INSERM, Institut Mondor de Recherche Biomédicale, Université Paris-Est Créteil, 94010 Créteil, France
- École Doctorale Sciences de la Vie et de la Santé, Université Paris-Est Créteil, 94010 Créteil, France
| | - Chadia Haddad
- INSPECT-LB (Institut National de Santé Publique, d'Épidémiologie Clinique et de Toxicologie-Liban), Beirut P.O. Box 12109, Lebanon
- School of Medicine, Lebanese American University, Byblos P.O. Box 13-5053, Lebanon
- Research Department, Psychiatric Hospital of the Cross, Jall Eddib P.O. Box 60096, Lebanon
| | - Aline Hajj
- INSPECT-LB (Institut National de Santé Publique, d'Épidémiologie Clinique et de Toxicologie-Liban), Beirut P.O. Box 12109, Lebanon
- Faculté de Pharmacie, Université Laval, Québec G1V 0A6, Canada
- Oncology Division, CHU de Québec Université Laval Research Center, Québec G1S 4L8, Canada
- Laboratoire de Pharmacologie, Pharmacie Clinique et Contrôle de Qualité des Médicament, Faculté de Pharmacie, Université Saint-Joseph de Beyrouth, Beirut P.O. Box 1107-2180, Lebanon
| | - Hala Sacre
- INSPECT-LB (Institut National de Santé Publique, d'Épidémiologie Clinique et de Toxicologie-Liban), Beirut P.O. Box 12109, Lebanon
- Drug Information Center, Order of Pharmacists of Lebanon, Beirut P.O. Box 11-2807, Lebanon
| | - Rony M Zeenny
- INSPECT-LB (Institut National de Santé Publique, d'Épidémiologie Clinique et de Toxicologie-Liban), Beirut P.O. Box 12109, Lebanon
- Department of Pharmacy, American University of Beirut Medical Center, Beirut P.O. Box 11-0236, Lebanon
| | - Jihan Safwan
- School of Pharmacy, Lebanese International University, Beirut P.O. Box 146404, Lebanon
- INSPECT-LB (Institut National de Santé Publique, d'Épidémiologie Clinique et de Toxicologie-Liban), Beirut P.O. Box 12109, Lebanon
| | - Pascale Salameh
- INSPECT-LB (Institut National de Santé Publique, d'Épidémiologie Clinique et de Toxicologie-Liban), Beirut P.O. Box 12109, Lebanon
- School of Medicine, Lebanese American University, Byblos P.O. Box 13-5053, Lebanon
- Faculty of Pharmacy, Lebanese University, Hadath P.O. Box 6573-14, Lebanon
- Department of Primary Care and Population Health, University of Nicosia Medical School, Nicosia 2417, Cyprus
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Terrinoni M, Nordqvist SL, Löfstrand M, Nilsson F, Källgård S, Sharma T, Lebens MR, Holmgren J. A thermostable, dry formulation inactivated Hikojima whole cell/cholera toxin B subunit oral cholera vaccine. Vaccine 2023; 41:3347-3357. [PMID: 37085452 DOI: 10.1016/j.vaccine.2023.04.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/23/2023] [Accepted: 04/03/2023] [Indexed: 04/23/2023]
Abstract
The feared diarrheal disease cholera remains an important global health problem. Use of oral cholera vaccine (OCV) from a global stockpile against both epidemic and endemic cholera is a cornerstone in the World Health Organisations (WHOs) global program for "Ending cholera by 2030". Three liquid inactivated whole-cell OCVs (Dukoral®, ShancholTM, and Euvichol-Plus®) are WHO prequalified and have proved to be safe and effective. However, their multicomponent composition and cold-chain requirement increase manufacturing, storage and transport costs. ShancholTM and Euvichol-Plus® OCVs used in WHOs global vaccine stockpile also lack the protective cholera toxin B-subunit (CTB) antigen present in Dukoral®, which results in suboptimal efficacy. WHOs Global Task Force on Cholera Control (GTFCC) has identified a thermostable, dry formulation vaccine as a priority for further OCV development. We describe here the development of such a vaccine, based on a lyophilized mixture of a single strain of formalin-killed Hikojima bacteria together with a low-cost, recombinantly produced CTB. The new vaccine, which is easy and inexpensive to manufacture, could be stored for at least 26 months at 25 °C and for at least 8 months at 40 °C with preservation of cell morphology and with no loss of protective Ogawa and Inaba lipopolysaccharides or CTB. It also proved to be well tolerated and to have equivalent oral immunogenicity in mice as ShancholTM and Dukoral® OCVs with regard to both serum and intestinal-mucosal antibody responses.
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Affiliation(s)
- Manuela Terrinoni
- Department of Microbiology and Immunology and Gothenburg University Vaccine Research Institute (GUVAX), Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Box 435, SE-405 30 Göteborg, Sweden.
| | - Stefan L Nordqvist
- Department of Microbiology and Immunology and Gothenburg University Vaccine Research Institute (GUVAX), Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Box 435, SE-405 30 Göteborg, Sweden
| | - Madeleine Löfstrand
- Department of Microbiology and Immunology and Gothenburg University Vaccine Research Institute (GUVAX), Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Box 435, SE-405 30 Göteborg, Sweden
| | - Frida Nilsson
- Department of Microbiology and Immunology and Gothenburg University Vaccine Research Institute (GUVAX), Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Box 435, SE-405 30 Göteborg, Sweden
| | - Susanne Källgård
- Department of Microbiology and Immunology and Gothenburg University Vaccine Research Institute (GUVAX), Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Box 435, SE-405 30 Göteborg, Sweden
| | - Tarun Sharma
- MSD-Wellcome Trust Hilleman Laboratories, New Delhi, India
| | - Michael R Lebens
- Department of Microbiology and Immunology and Gothenburg University Vaccine Research Institute (GUVAX), Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Box 435, SE-405 30 Göteborg, Sweden
| | - Jan Holmgren
- Department of Microbiology and Immunology and Gothenburg University Vaccine Research Institute (GUVAX), Institute of Biomedicine, Sahlgrenska Academy at University of Gothenburg, Box 435, SE-405 30 Göteborg, Sweden.
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Burbick CR, Munson E, Lawhon SD, Zapp A, Villaflor M, Thelen E. An Update on Novel Taxa and Revised Taxonomic Status of Bacteria (Including Members of the Phylum Planctomycetota) Isolated from Aquatic Host Species Described in 2018 to 2021. J Clin Microbiol 2023; 61:e0142622. [PMID: 36719221 PMCID: PMC9945501 DOI: 10.1128/jcm.01426-22] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Increased interest in farmed aquatic species, aquatic conservation measures, and microbial metabolic end-product utilization have translated into a need for awareness and recognition of novel microbial species and revisions to bacterial taxonomy. Because this need has largely been unmet, through a 4-year literature review, we present lists of novel and revised bacterial species (including members of the phylum Planctomycetota) derived from aquatic hosts that can serve as a baseline for future biennial summaries of taxonomic revisions in this field. Most new and revised taxa were noted within oxidase-positive and/or nonglucose fermentative Gram-negative bacilli, including members of the Tenacibaculum, Flavobacterium, and Vibrio genera. Valid and effectively published novel members of the Streptococcus, Erysipelothrix, and Photobacterium genera are additionally described from disease pathogenesis perspectives.
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Affiliation(s)
- Claire R. Burbick
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman, Washington, USA
| | - Erik Munson
- Department of Medical Laboratory Science, Marquette University, Milwaukee, Wisconsin, USA
| | - Sara D. Lawhon
- Department of Veterinary Pathobiology, Texas A&M University, College Station, Texas, USA
| | - Amanda Zapp
- Department of Medical Laboratory Science, Marquette University, Milwaukee, Wisconsin, USA
| | - Maia Villaflor
- Department of Medical Laboratory Science, Marquette University, Milwaukee, Wisconsin, USA
| | - Elizabeth Thelen
- Department of Medical Laboratory Science, Marquette University, Milwaukee, Wisconsin, USA
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Almagro-Moreno S, Martinez-Urtaza J, Pukatzki S. Vibrio Infections and the Twenty-First Century. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1404:1-16. [PMID: 36792868 DOI: 10.1007/978-3-031-22997-8_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
The Vibrionaceae is a highly diverse family of aquatic bacteria. Some members of this ubiquitous group can cause a variety of diseases in humans ranging from cholera caused by Vibrio cholerae, severe septicemia caused by Vibrio vulnificus, to acute gastroenteritis by Vibrio parahaemolyticus. Planet Earth is experiencing unprecedented changes of planetary scale associated with climate change. These environmental perturbations paired with overpopulation and pollution are increasing the distribution of pathogenic Vibrios and exacerbating the risk of causing infections. In this chapter, we discuss various aspects of Vibrio infections within the context of the twenty-first century with a major emphasis on the aforementioned pathogenic species. Overall, we believe that the twenty-first century is posed to be both one full of challenges due to the rise of these pathogens, and also a catalyst for innovative and groundbreaking discoveries.
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Affiliation(s)
- Salvador Almagro-Moreno
- Burnett School of Biomedical Sciences, University of Central Florida, Orlando, FL, USA. .,National Center for Integrated Coastal Research, University of Central Florida, Orlando, FL, USA.
| | - Jaime Martinez-Urtaza
- Department de Genetica I de Microbiologia, Facultat de Biociencies, Universitat Autonoma de Barcelona, Barcelona, Spain
| | - Stefan Pukatzki
- Department of Biology, The City College of New York, New York, NY, USA
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Liu M, Zhao MY, Wang H, Wang ZH, Wang Z, Liu Y, Li YP, Dong T, Fu Y. Pesticin-Like Effector VgrG3 cp Targeting Peptidoglycan Delivered by the Type VI Secretion System Contributes to Vibrio cholerae Interbacterial Competition. Microbiol Spectr 2023; 11:e0426722. [PMID: 36625646 PMCID: PMC9927483 DOI: 10.1128/spectrum.04267-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 12/13/2022] [Indexed: 01/11/2023] Open
Abstract
Vibrio cholerae can utilize a type VI secretion system (T6SS) to increase its intra- and interspecies competition. However, much still remains to be understood about the underlying mechanism of this intraspecies competition. In this study, we isolated an environmental V. cholerae strain E1 that lacked the typical virulence factors toxin-coregulated pilus and cholera toxin and that encoded a functional T6SS. We identified an evolved VgrG3 variant with a predicted C-terminal pesticin-like domain in V. cholerae E1, designated VgrG3cp. Using heterologous expression, protein secretion, and peptidoglycan-degrading assays, we demonstrated that VgrG3cp is a T6SS-dependent effector harboring cell wall muramidase activity and that its toxicity can be neutralized by cognate immunity protein TsiV3cp. Site-directed mutagenesis proved that the aspartic acid residue at position 867 is crucial for VgrG3cp-mediated antibacterial activity. Bioinformatic analysis showed that genes encoding VgrG3cp-like homologs are distributed in Vibrio species, are linked with T6SS structural genes and auxiliary genes, and the vgrG3cp-tsiV3cp gene pair of V. cholerae probably evolved from Vibrio anguillarum and Vibrio fluvialis via homologous recombination. Through a time-lapse microscopy assay, we directly determined that cells accumulating VgrG3cp disrupted bacterial division, while the cells continued to increase in size until the loss of membrane potential and cell wall breakage and finally burst. The results of the competitive killing assay showed that VgrG3cp contributes to V. cholerae interspecies competition. Collectively, our study revealed a novel T6SS E-I pair representing a new T6SS toxin family which allows V. cholerae to gain dominance within polymicrobial communities by T6SS. IMPORTANCE The type VI secretion system used by a broad range of Gram-negative bacteria delivers toxic proteins to target adjacent eukaryotic and prokaryotic cells. Diversification of effector proteins determines the complex bacterium-bacterium interactions and impacts the health of hosts and environmental ecosystems in which bacteria reside. This work uncovered an evolved valine-glycine repeat protein G3, carrying a C-terminal pesticin-like domain (VgrG3cp), which has been suggested to harbor cell wall hydrolase activity and is able to affect cell division and the integrity of cell wall structure. Pesticin-like homologs constitute a family of T6SS-associated effectors targeting bacterial peptidoglycan which are distributed in Vibrio species, and genetic loci of them are linked with T6SS structural genes and auxiliary genes. T6SS-delivered VgrG3cp mediated broad-spectrum antibacterial activity for several microorganisms tested, indicating that VgrG3cp-mediated antimicrobial activity is capable of conferring bacteria a competitive advantage over competitors in the same niches.
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Affiliation(s)
- Ming Liu
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Meng-Yu Zhao
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
- The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, China
| | - Heng Wang
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Zeng-Hang Wang
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic & Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Zhao Wang
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Ying Liu
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Yin-Peng Li
- The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen, China
| | - Tao Dong
- Department of Immunology and Microbiology, School of Life Sciences, Southern University of Science and Technology, Shenzhen, China
| | - Yang Fu
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
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Combating cholera by building predictive capabilities for pathogenic Vibrio cholerae in Yemen. Sci Rep 2023; 13:2255. [PMID: 36755108 PMCID: PMC9908932 DOI: 10.1038/s41598-022-22946-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 10/21/2022] [Indexed: 02/10/2023] Open
Abstract
Cholera remains a global public health threat in regions where social vulnerabilities intersect with climate and weather processes that impact infectious Vibrio cholerae. While access to safe drinking water and sanitation facilities limit cholera outbreaks, sheer cost of building such infrastructure limits the ability to safeguard the population. Here, using Yemen as an example where cholera outbreak was reported in 2016, we show how predictive abilities for forecasting risk, employing sociodemographical, microbiological, and climate information of cholera, can aid in combating disease outbreak. An epidemiological analysis using Bradford Hill Criteria was employed in near-real-time to understand a predictive model's outputs and cholera cases in Yemen. We note that the model predicted cholera risk at least four weeks in advance for all governorates of Yemen with overall 72% accuracy (varies with the year). We argue the development of anticipatory decision-making frameworks for climate modulated diseases to design intervention activities and limit exposure of pathogens preemptively.
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Abstract
The major function of the mammalian immune system is to prevent and control infections caused by enteropathogens that collectively have altered human destiny. In fact, as the gastrointestinal tissues are the major interface of mammals with the environment, up to 70% of the human immune system is dedicated to patrolling them The defenses are multi-tiered and include the endogenous microflora that mediate colonization resistance as well as physical barriers intended to compartmentalize infections. The gastrointestinal tract and associated lymphoid tissue are also protected by sophisticated interleaved arrays of active innate and adaptive immune defenses. Remarkably, some bacterial enteropathogens have acquired an arsenal of virulence factors with which they neutralize all these formidable barriers to infection, causing disease ranging from mild self-limiting gastroenteritis to in some cases devastating human disease.
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Affiliation(s)
- Micah J. Worley
- Department of Biology, University of Louisville, Louisville, Kentucky, USA,CONTACT Micah J. Worley Department of Biology, University of Louisville, 139 Life Sciences Bldg, Louisville, Kentucky, USA
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Liu M, Wang H, Liu Y, Tian M, Wang Z, Shu RD, Zhao MY, Chen WD, Wang H, Wang H, Fu Y. The phospholipase effector Tle1 Vc promotes Vibrio cholerae virulence by killing competitors and impacting gene expression. Gut Microbes 2023; 15:2241204. [PMID: 37526354 PMCID: PMC10395195 DOI: 10.1080/19490976.2023.2241204] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 07/20/2023] [Indexed: 08/02/2023] Open
Abstract
Vibrio cholerae utilizes the Type VI secretion system (T6SS) to gain an advantage in interbacterial competition by delivering anti-prokaryotic effectors in a contact-dependent manner. However, the impact of T6SS and its secreted effectors on physiological behavior remains poorly understood. In this study, we present Tle1Vc, a phospholipase effector in atypical pathogenic V. cholerae E1 that is secreted by T6SS via its interaction with VgrG1E1. Tle1Vc contains a DUF2235 domain and belongs to the Tle1 (type VI lipase effector) family. Bacterial toxicity assays, lipase activity assays and site-directed mutagenesis revealed that Tle1Vc possessed phospholipase A1 activity and phospholipase A2 activity, and that Tle1Vc-induced toxicity required a serine residue (S356) and two aspartic acid residues (D417 and D496). Cells intoxication with Tle1Vc lead to membrane depolarization and alter membrane permeability. Tli1tox-, a cognate immunity protein, directly interacts with Tle1Vc to neutralize its toxicity. Moreover, Tle1Vc can kill multiple microorganisms by T6SS and promote in vivo fitness of V. cholerae through mediating antibacterial activity. Tle1Vc induces bacterial motility by increasing the expression of flagellar-related genes independently of functional T6SS and the tit-for-tat (TFT) response, where Pseudomonas aeruginosa uses its T6SS-H1 cluster to counterattack other offensive attackers. Our study also demonstrated that the physical puncture of E1 T6SS can induce a moderate TFT response, which is essential to the Tle1Vc-mediated strong TFT response, maximizing effector functions. Overall, our study characterized the antibacterial mechanism of phospholipase effector Tle1Vc and its multiple physiological significance.
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Affiliation(s)
- Ming Liu
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Heng Wang
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Ying Liu
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Miao Tian
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Zhao Wang
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Run-Dong Shu
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Meng-Yu Zhao
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Wei-Di Chen
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Hao Wang
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Hui Wang
- College of Life Sciences, Nanjing Agricultural University, Nanjing, China
| | - Yang Fu
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
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De-Simone SG, Napoleão-Pêgo P, Gonçalves PS, Lechuga GC, Cardoso SV, Provance DW, Morel CM, da Silva FR. B-Cell Epitope Mapping of the Vibrio cholera Toxins A, B, and P and an ELISA Assay. Int J Mol Sci 2022; 24:531. [PMID: 36613974 PMCID: PMC9820764 DOI: 10.3390/ijms24010531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 12/31/2022] Open
Abstract
Oral immunization with the choleric toxin (CT) elicits a high level of protection against its enterotoxin activities and can control cholera in endemic settings. However, the complete B-cell epitope map of the CT that is responsible for protection remains to be clarified. A library of one-hundred, twenty-two 15-mer peptides covering the entire sequence of the three chains of the CT protein (CTP) was prepared by SPOT synthesis. The immunoreactivity of membrane-bound peptides with sera from mice vaccinated with an oral inactivated vaccine (Schankol™) allowed the mapping of continuous B-cell epitopes, topological studies, multi-antigen peptide (MAP) synthesis, and Enzyme-Linked Immunosorbent Assay (ELISA) development. Eighteen IgG epitopes were identified; eight in the CTA, three in the CTB, and seven in the protein P. Three V. cholera specific epitopes, Vc/TxA-3, Vc/TxB-11, and Vc/TxP-16, were synthesized as MAP4 and used to coat ELISA plates in order to screen immunized mouse sera. Sensitivities and specificities of 100% were obtained with the MAP4s of Vc/TxA-3 and Vc/TxB-11. The results revealed a set of peptides whose immunoreactivity reflects the immune response to vaccination. The array of peptide data can be applied to develop improved serological tests in order to detect cholera toxin exposure, as well as next generation vaccines to induce more specific antibodies against the cholera toxin.
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Affiliation(s)
- Salvatore G. De-Simone
- Center for Technological Development in Health (CDTS)/National Institute of Science and Technology for Innovation in Neglected Diseases Populations (INCT-IDPN), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-900, RJ, Brazil
- Epidemiology and Molecular Systematics Laboratory (LEMS), Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-900, RJ, Brazil
- Program of Post-Graduation on Science and Biotechnology, Molecular and Cellular Biology Department, Biology Institute, Federal Fluminense University, Niterói 24020-036, RJ, Brazil
| | - Paloma Napoleão-Pêgo
- Center for Technological Development in Health (CDTS)/National Institute of Science and Technology for Innovation in Neglected Diseases Populations (INCT-IDPN), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-900, RJ, Brazil
- Epidemiology and Molecular Systematics Laboratory (LEMS), Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-900, RJ, Brazil
| | - Priscilla S. Gonçalves
- Center for Technological Development in Health (CDTS)/National Institute of Science and Technology for Innovation in Neglected Diseases Populations (INCT-IDPN), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-900, RJ, Brazil
- Epidemiology and Molecular Systematics Laboratory (LEMS), Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-900, RJ, Brazil
- Program of Post-Graduation on Science and Biotechnology, Molecular and Cellular Biology Department, Biology Institute, Federal Fluminense University, Niterói 24020-036, RJ, Brazil
| | - Guilherme C. Lechuga
- Center for Technological Development in Health (CDTS)/National Institute of Science and Technology for Innovation in Neglected Diseases Populations (INCT-IDPN), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-900, RJ, Brazil
- Epidemiology and Molecular Systematics Laboratory (LEMS), Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-900, RJ, Brazil
| | - Sergian V. Cardoso
- Department of Health, Graduate Program in Translational Biomedicine (BIOTRANS), University of Grande Rio (UNIGRANRIO), Caxias 25071-202, RJ, Brazil
| | - David W. Provance
- Center for Technological Development in Health (CDTS)/National Institute of Science and Technology for Innovation in Neglected Diseases Populations (INCT-IDPN), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-900, RJ, Brazil
- Epidemiology and Molecular Systematics Laboratory (LEMS), Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-900, RJ, Brazil
| | - Carlos M. Morel
- Center for Technological Development in Health (CDTS)/National Institute of Science and Technology for Innovation in Neglected Diseases Populations (INCT-IDPN), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-900, RJ, Brazil
| | - Flavio R. da Silva
- Center for Technological Development in Health (CDTS)/National Institute of Science and Technology for Innovation in Neglected Diseases Populations (INCT-IDPN), Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-900, RJ, Brazil
- Epidemiology and Molecular Systematics Laboratory (LEMS), Oswaldo Cruz Institute, Oswaldo Cruz Foundation (FIOCRUZ), Rio de Janeiro 21040-900, RJ, Brazil
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Castello A, Alio V, Sciortino S, Oliveri G, Cardamone C, Butera G, Costa A. Occurrence and Molecular Characterization of Potentially Pathogenic Vibrio spp. in Seafood Collected in Sicily. Microorganisms 2022; 11:microorganisms11010053. [PMID: 36677345 PMCID: PMC9866474 DOI: 10.3390/microorganisms11010053] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/15/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022] Open
Abstract
Seafood can vehiculate foodborne illnesses from water to humans. Climate changes, increasing water contamination and coastlines anthropization, favor the global spread of Vibrio spp. and the occurrence of antibiotic-resistant isolates. The aim of this study was to evaluate the spread of potentially pathogenic Vibrio spp. in fishery products collected in Sicily and to assess their antibiotic resistance. Bacteriological and molecular methods were applied to 603 seafood samples to detect V. parahaemolyticus, V. cholerae, V. vulnificus, and Vibrio alginolyticus in order to assess their pathogenicity and antimicrobial resistance. About 30% of bivalves and 20% of other fishery products were contaminated by Vibrio spp.; V. parahaemolyticus accounted for 43/165 isolates, 3 of which were carrying either tdh or trh; V. cholerae accounted for 12/165 isolates, all of them non-O1 non-O139 and none carrying virulence genes; and V. vulnificus accounted for 5/165 isolates. The highest rates of resistance were observed for ampicillin, but we also detected strains resistant to antibiotics currently included among the most efficient against Vibrio spp. In spite of their current low incidence, their rise might pose further issues in treating infections; hence, these results stress the need for a continuous monitoring of antimicrobial resistance among fishery products and an effective risk assessment.
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