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Mo W, Wang H, Wang J, Wang Y, Liu Y, Luo Y, He M, Cheng S, Mei H, He J, Su J. Advances in Research on Bacterial Oxidation of Mn(II): A Visualized Bibliometric Analysis Based on CiteSpace. Microorganisms 2024; 12:1611. [PMID: 39203453 PMCID: PMC11356483 DOI: 10.3390/microorganisms12081611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2024] [Revised: 08/03/2024] [Accepted: 08/05/2024] [Indexed: 09/03/2024] Open
Abstract
Manganese (Mn) pollution poses a serious threat to the health of animals, plants, and humans. The microbial-mediated Mn(II) removal method has received widespread attention because of its rapid growth, high efficiency, and economy. Mn(II)-oxidizing bacteria can oxidize toxic soluble Mn(II) into non-toxic Mn(III/IV) oxides, which can further participate in the transformation of other heavy metals and organic pollutants, playing a crucial role in environmental remediation. This study aims to conduct a bibliometric analysis of research papers on bacterial Mn(II) oxidation using CiteSpace, and to explore the research hotspots and developmental trends within this field between 2008 and 2023. A series of visualized knowledge map analyses were conducted with 469 screened SCI research papers regarding annual publication quantity, author groups and their countries and regions, journal categories, publishing institutions, and keywords. China, the USA, and Japan published the most significant number of research papers on the research of bacterial Mn(II) oxidation. Research hotspots of bacterial Mn(II) oxidation mainly focused on the species and distributions of Mn(II)-oxidizing bacteria, the influencing factors of Mn(II) oxidation, the mechanisms of Mn(II) oxidation, and their applications in environment. This bibliometric analysis provides a comprehensive visualized knowledge map to quickly understand the current advancements, research hotspots, and academic frontiers in bacterial Mn(II) oxidation.
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Affiliation(s)
- Wentao Mo
- Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China; (W.M.); (H.W.); (J.W.); (Y.W.); (Y.L.); (Y.L.); (M.H.); (S.C.); (H.M.)
| | - Hang Wang
- Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China; (W.M.); (H.W.); (J.W.); (Y.W.); (Y.L.); (Y.L.); (M.H.); (S.C.); (H.M.)
| | - Jianghan Wang
- Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China; (W.M.); (H.W.); (J.W.); (Y.W.); (Y.L.); (Y.L.); (M.H.); (S.C.); (H.M.)
| | - Yue Wang
- Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China; (W.M.); (H.W.); (J.W.); (Y.W.); (Y.L.); (Y.L.); (M.H.); (S.C.); (H.M.)
| | - Yunfei Liu
- Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China; (W.M.); (H.W.); (J.W.); (Y.W.); (Y.L.); (Y.L.); (M.H.); (S.C.); (H.M.)
| | - Yi Luo
- Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China; (W.M.); (H.W.); (J.W.); (Y.W.); (Y.L.); (Y.L.); (M.H.); (S.C.); (H.M.)
| | - Minghui He
- Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China; (W.M.); (H.W.); (J.W.); (Y.W.); (Y.L.); (Y.L.); (M.H.); (S.C.); (H.M.)
| | - Shuang Cheng
- Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China; (W.M.); (H.W.); (J.W.); (Y.W.); (Y.L.); (Y.L.); (M.H.); (S.C.); (H.M.)
| | - Huiting Mei
- Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China; (W.M.); (H.W.); (J.W.); (Y.W.); (Y.L.); (Y.L.); (M.H.); (S.C.); (H.M.)
| | - Jin He
- National Key Laboratory of Agricultural Microbiology, College of Life Science and Technology, Huazhong Agricultural University, Wuhan 430062, China;
| | - Jianmei Su
- Hubei Key Laboratory of Regional Development and Environmental Response, Faculty of Resources and Environmental Science, Hubei University, Wuhan 430062, China; (W.M.); (H.W.); (J.W.); (Y.W.); (Y.L.); (Y.L.); (M.H.); (S.C.); (H.M.)
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Ghafari S, Alavi SM, Khaghani S. Potentially pathogenic culturable bacteria in hemodialysis waters. BMC Microbiol 2024; 24:276. [PMID: 39054498 PMCID: PMC11270894 DOI: 10.1186/s12866-024-03430-1] [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: 02/12/2023] [Accepted: 07/16/2024] [Indexed: 07/27/2024] Open
Abstract
BACKGROUND Hemodialysis patients are at risk of acquiring healthcare-related infections due to using non-sterile water to prepare hemodialysis fluid. Therefore, microbiological control and monitoring of used water are of crucial importance. MATERIALS AND METHODS In this work, we identified bacterial populations occupying a hemodialysis water distribution system for almost a 6-month period in Ahvaz city, southwest of Iran. A total of 18 samples from three points were collected. We found high colony counts of bacteria on R2A agar. 31 bacteria with different morphological and biochemical characteristics were identified by molecular-genetic methods based on 16 S rRNA gene sequencing. Endotoxin concentrations were measured, using Endosafe® Rapid LAL Single-Test Vials. RESULTS A diverse bacterial community was identified, containing predominantly Gram-negative bacilli. The most frequently isolated genus was Sphingomonas. Five species including M. fortuitum, M. lentiflavum, M.szulgai, M. barrassiae, and M. gordonae was identified .Despite the presence of Gram-negative bacteria the endotoxin analysis of all samples revealed that their endotoxin values were below the detection limit. CONCLUSION The members of Sphingomonas genus along with Bosea and mycobacteria could be regarded as pioneers in surface colonization and biofilm creation. These bacteria with others like Pelomonas, Bradyrhizobium, staphylococcus, and Microbacterium may represent a potential health risk to patients under hemodialysis treatment.
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Affiliation(s)
- Shokouh Ghafari
- Cellular and Molecular Research Center, Faculty of Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Seyed Mohammad Alavi
- Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Soheila Khaghani
- Infectious and Tropical Diseases Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
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Sjöberg S, Stairs CW, Allard B, Homa F, Martin T, Sjöberg V, Ettema TJG, Dupraz C. Microbiomes in a manganese oxide producing ecosystem in the Ytterby mine, Sweden: impact on metal mobility. FEMS Microbiol Ecol 2020; 96:fiaa169. [PMID: 32815988 PMCID: PMC7593233 DOI: 10.1093/femsec/fiaa169] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 08/13/2020] [Indexed: 12/28/2022] Open
Abstract
Microbe-mediated precipitation of Mn-oxides enriched in rare earth elements (REE) and other trace elements was discovered in tunnels leading to the main shaft of the Ytterby mine, Sweden. Defining the spatial distribution of microorganisms and elements in this ecosystem provide a better understanding of specific niches and parameters driving the emergence of these communities and associated mineral precipitates. Along with elemental analyses, high-throughput sequencing of the following four subsystems were conducted: (i) water seeping from a rock fracture into the tunnel, (ii) Mn-oxides and associated biofilm; referred to as the Ytterby Black Substance (YBS) biofilm (iii) biofilm forming bubbles on the Mn-oxides; referred to as the bubble biofilm and (iv) fracture water that has passed through the biofilms. Each subsystem hosts a specific collection of microorganisms. Differentially abundant bacteria in the YBS biofilm were identified within the Rhizobiales (e.g. Pedomicrobium), PLTA13 Gammaproteobacteria, Pirellulaceae, Hyphomonadaceae, Blastocatellia and Nitrospira. These taxa, likely driving the Mn-oxide production, were not detected in the fracture water. This biofilm binds Mn, REE and other trace elements in an efficient, dynamic process, as indicated by substantial depletion of these metals from the fracture water as it passes through the Mn deposit zone. Microbe-mediated oxidation of Mn(II) and formation of Mn(III/IV)-oxides can thus have considerable local environmental impact by removing metals from aquatic environments.
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Affiliation(s)
- Susanne Sjöberg
- Department of Geological Sciences, Stockholm University, Svante Arrhenius väg 8, SE-106 91 Stockholm, Sweden
| | - Courtney W Stairs
- Department of Cell and Molecular Biology, Science for Life Laboratory, Uppsala University, Box 596, SE-751 23 Uppsala, Sweden
| | - Bert Allard
- Man-Technology-Environment Research Centre (MTM), Örebro University, SE-701 82 Örebro, Sweden
| | - Felix Homa
- Department of Cell and Molecular Biology, Science for Life Laboratory, Uppsala University, Box 596, SE-751 23 Uppsala, Sweden
- Laboratory of Microbiology, Department of Agrotechnology and Food Sciences, Wageningen University, Stippeneng 4, 6708WE Wageningen, The Netherlands
| | - Tom Martin
- Department of Cell and Molecular Biology, Science for Life Laboratory, Uppsala University, Box 596, SE-751 23 Uppsala, Sweden
| | - Viktor Sjöberg
- Man-Technology-Environment Research Centre (MTM), Örebro University, SE-701 82 Örebro, Sweden
| | - Thijs J G Ettema
- Department of Cell and Molecular Biology, Science for Life Laboratory, Uppsala University, Box 596, SE-751 23 Uppsala, Sweden
- Laboratory of Microbiology, Department of Agrotechnology and Food Sciences, Wageningen University, Stippeneng 4, 6708WE Wageningen, The Netherlands
| | - Christophe Dupraz
- Department of Geological Sciences, Stockholm University, Svante Arrhenius väg 8, SE-106 91 Stockholm, Sweden
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