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Comparative Genomic Analysis Reveals Potential Pathogenicity and Slow-Growth Characteristics of Genus Brevundimonas and Description of Brevundimonas pishanensis sp. nov. Microbiol Spectr 2022; 10:e0246821. [PMID: 35416704 PMCID: PMC9045160 DOI: 10.1128/spectrum.02468-21] [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] [Indexed: 11/20/2022] Open
Abstract
The genus Brevundimonas consists of Gram-negative bacteria widely distributed in environment and can cause human infections. However, the genomic characteristics and pathogenicity of Brevundimonas remain poorly studied. Here, the whole-genome features of 24 Brevundimonas type strains were described. Brevundimonas spp. had relatively small genomes (3.13 ± 0.29 Mb) within the family Caulobacteraceae but high G+C contents (67.01 ± 2.19 mol%). Two-dimensional hierarchical clustering divided those genomes into 5 major clades, in which clades II and V contained nine and five species, respectively. Interestingly, phylogenetic analysis showed a one-to-one match between core and accessory genomes, which suggested coevolution of species within the genus Brevundimonas. The unique genes were annotated to biological functions like catalytic activity, signaling and cellular processes, multisubstance metabolism, etc. The majority of Brevundimonas spp. harbored virulence-associated genes icl, tufA, kdsA, htpB, and acpXL, which encoded isocitrate lyase, elongation factor, 2-dehydro-3-deoxyphosphooctonate aldolase, heat shock protein, and acyl carrier protein, respectively. In addition, genomic islands (GIs) and phages/prophages were identified within the Brevundimonas genus. Importantly, a novel Brevundimonas species was identified from the feces of a patient (suffering from diarrhea) by the analyses of biochemical characteristics, phylogenetic tree of 16S rRNA gene, multilocus sequence analysis (MLSA) sequences, and genomic data. The name Brevundimonas pishanensis sp. nov. was proposed, with type strain CHPC 1.3453 (= GDMCC 1.2503T = KCTC 82824T). Brevundimonas spp. also showed obvious slow growth compared with that of Escherichia coli. Our study reveals insights into genomic characteristics and potential virulence-associated genes of Brevundimonas spp., and provides a basis for further intensive study of the pathogenicity of Brevundimonas. IMPORTANCEBrevundimonas spp., a group of bacteria from the family Caulobacteraceae, is associated with nosocomial infections, deserve widespread attention. Our study elucidated genes potentially associated with the pathogenicity of the Brevundimonas genus. We also described some new characteristics of Brevundimonas spp., such as small chromosome size, high G+C content, and slow-growth phenotypes, which made the Brevundimonas genus a good model organism for in-depth studies of growth rate traits. Apart from the comparative analysis of the genomic features of the Brevundimonas genus, we also reported a novel Brevundimonas species, Brevundimonas pishanensis, from the feces of a patient with diarrhea. Our study promotes the understanding of the pathogenicity characteristics of Brevundimonas species bacteria.
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Anversa L, Romani CD, Caria ES, Saeki EK, Nascentes GAN, Garbelotti M, Stancari RCA, Dantas STA, Rall VLM, Ruiz LS, Camargo CH, Richini-Pereira VB. Quality of dialysis water and dialysate in hemodialysis centers: highlight for occurrence of non-fermenting gram-negative bacilli. J Appl Microbiol 2022; 132:3416-3429. [PMID: 35108426 DOI: 10.1111/jam.15470] [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: 08/18/2021] [Revised: 01/28/2022] [Accepted: 01/31/2022] [Indexed: 11/30/2022]
Abstract
AIMS To evaluate the physicochemical and microbiological quality of dialysis water and dialysate samples from hemodialysis centers. METHODS AND RESULTS Samples were fortnightly collected from three hemodialysis centers in Bauru City, Brazil, between July/2017 and June/2018, at the stages of post-reverse osmosis, reuse and dialysate. Analyses included determination of conductivity, fluoride, nitrate and sulfate; test for total coliform bacteria; count of heterotrophic bacteria; count and identification of non-fermenting gram-negative bacilli (NFGNB); drug susceptibility test; biofilm formation capacity, and genetic similarity among some isolated NFGNB. Of the analyzed samples, only 4/72 (5.6%) had conductivity values ≥ 10 mS/cm, 4/216 (1.9%) presented total coliforms, and 1/216 (0.5%) had heterotrophic bacteria count > 100 CFU/mL. NFGNB were isolated from 99/216 (45.8%) samples, and the major identified microorganisms included Herbaspirillum aquaticum/huttiense, Brevundimonas aurantiaca, Cupriavidus metallidurans, Pseudomonas aeruginosa and Ralstonia insidiosa. Isolates of P. aeruginosa and Burkholderia cepacia complex were sensitive to most antimicrobials and, together with isolates of Ralstonia insidiosa and Ralstonia pickettii, showed strong biofilm formation capacity. Some isolates expressed the same electrophoretic profile on pulsed-field gel electrophoresis, indicating persistence of bacterial clones in the systems over time. CONCLUSIONS NFGNB were observed in several dialysis water and dialysate samples from all investigated centers, which may represent a risk to the health of patients. SIGNIFICANCE AND IMPACT OF THE STUDY Regular inclusion of actions for NFGNB control and monitoring in hemodialysis fluids are suggested for greater safety of the dialytic process.
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Affiliation(s)
- L Anversa
- Adolfo Lutz Institute, Regional Laboratories Center Bauru, Bauru, Brazil
| | - C D Romani
- Adolfo Lutz Institute, Regional Laboratories Center Bauru, Bauru, Brazil
| | - E S Caria
- Adolfo Lutz Institute, Regional Laboratories Center Bauru, Bauru, Brazil
| | - E K Saeki
- Adolfo Lutz Institute, Regional Laboratories Center Presidente Prudente, Presidente Prudente, Brazil
| | - G A N Nascentes
- Federal Institute of Education, Science and Technology of Triângulo Mineiro, Uberaba, Brazil
| | - M Garbelotti
- Adolfo Lutz Institute, Regional Laboratories Center Bauru, Bauru, Brazil
| | - R C A Stancari
- Adolfo Lutz Institute, Regional Laboratories Center Bauru, Bauru, Brazil
| | - S T A Dantas
- Institute of Biosciences, Department of Microbiology and Immunology, São Paulo State University (Unesp), Botucatu, Brazil
| | - V L M Rall
- Institute of Biosciences, Department of Microbiology and Immunology, São Paulo State University (Unesp), Botucatu, Brazil
| | - L S Ruiz
- Adolfo Lutz Institute, Regional Laboratories Center Bauru, Bauru, Brazil
| | - C H Camargo
- Adolfo Lutz Institute, Central Laboratory, São Paulo, Brazil
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Paramasivam V, Paez A, Verma A, Landry D, Braden GL. Brevundimonas vesicularis Peritonitis in a Chronic Peritoneal Dialysis Patient. Case Rep Nephrol Dial 2021; 11:314-320. [PMID: 34901199 PMCID: PMC8613580 DOI: 10.1159/000517140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 05/07/2021] [Indexed: 11/19/2022] Open
Abstract
Gram-negative peritonitis in chronic peritoneal dialysis patients is difficult to treat and may result in catheter loss. Brevundimonas vesicularis is a Gram-negative rod bacterium which rarely causes infections in humans. A 41-year-old male receiving continuous cycling peritoneal dialysis for 5 months developed culture-negative peritonitis. He failed initial empiric treatment with intraperitoneal vancomycin and levofloxacin and thereafter intravenous gentamicin. B. vesicularis resistant to levofloxacin was isolated from the peritoneal fluid 21 days after his initial symptoms. Despite treatment with intravenous ceftriaxone and oral amoxicillin-clavulanate, the infection persisted, which required removal of the peritoneal catheter in order to cure this infection. We describe the features of B. vesicularis infection in our patient and the rarely reported additional cases.
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Affiliation(s)
- Vijayakumar Paramasivam
- Division of Hospital Medicine, Baystate Medical Center, University of Massachusetts Medical School at Baystate, Springfield, Massachusetts, USA
| | - Armando Paez
- Division of Infectious Disease, Baystate Medical Center, University of Massachusetts Medical School at Baystate, Springfield, Massachusetts, USA
| | - Ashish Verma
- Division of Nephrology, Baystate Medical Center, University of Massachusetts Medical School at Baystate, Springfield, Massachusetts, USA
| | - Daniel Landry
- Division of Nephrology, Baystate Medical Center, University of Massachusetts Medical School at Baystate, Springfield, Massachusetts, USA
| | - Gregory L Braden
- Division of Nephrology, Baystate Medical Center, University of Massachusetts Medical School at Baystate, Springfield, Massachusetts, USA
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Diversity and Genetic Basis for Carbapenem Resistance in a Coastal Marine Environment. Appl Environ Microbiol 2020; 86:AEM.02939-19. [PMID: 32198174 DOI: 10.1128/aem.02939-19] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 03/07/2020] [Indexed: 11/20/2022] Open
Abstract
Resistance to the "last-resort" antibiotics, such as carbapenems, has led to very few antibiotics being left to treat infections by multidrug-resistant bacteria. Spread of carbapenem resistance (CR) has been well characterized for the clinical environment. However, there is a lack of information about its environmental distribution. Our study reveals that CR is present in a wide range of Gram-negative bacteria in the coastal seawater environment, including four phyla, eight classes, and 30 genera. These bacteria were likely introduced into seawater via stormwater flows. Some CR isolates found here, such as Acinetobacter junii, Acinetobacter johnsonii, Brevundimonas vesicularis, Enterococcus durans, Pseudomonas monteilii, Pseudomonas fulva, and Stenotrophomonas maltophilia, are further relevant to human health. We also describe a novel metallo-β-lactamase (MBL) for marine Rheinheimera isolates with CR, which has likely been horizontally transferred to Citrobacter freundii or Enterobacter cloacae In contrast, another MBL of the New Delhi type was likely acquired by environmental Variovorax isolates from Escherichia coli, Klebsiella pneumoniae, or Acinetobacter baumannii utilizing a plasmid. Our findings add to the growing body of evidence that the aquatic environment is both a reservoir and a vector for novel CR genes.IMPORTANCE Resistance against the "last-resort" antibiotics of the carbapenem family is often based on the production of carbapenemases, and this has been frequently observed in clinical samples. However, the dissemination of carbapenem resistance (CR) in the environment has been less well explored. Our study shows that CR is commonly found in a range of bacterial taxa in the coastal aquatic environment and can involve the exchange of novel metallo-β-lactamases from typical environmental bacteria to potential human pathogens or vice versa. The outcomes of this study contribute to a better understanding of how aquatic and marine bacteria can act as reservoirs and vectors for CR outside the clinical setting.
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Scombroid Poisoning with Concurrent Brevundimonas Septicemia: A Unique Case Report and Brief Literature Review. Case Rep Infect Dis 2019; 2019:2148654. [PMID: 31815024 PMCID: PMC6877972 DOI: 10.1155/2019/2148654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 10/26/2019] [Indexed: 11/17/2022] Open
Abstract
Scombroid poisoning is a predominantly self-limited illness associated with ingestion of poorly handled fish. It is not frequently associated with bacteremia and has never been described with Brevundimonas septicemia. We describe a case of a man who presented in shock with histamine poisoning after ingesting sushi. Blood cultures grew an uncommon pathogen, Brevundimonas vesicularis. This case demonstrates systemic bacterial infection in the setting of histamine poisoning, which is an atypical presentation for a well-known foodborne illness.
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Assessment of Airborne Bacterial and Fungal Communities in Selected Areas of Teaching Hospital, Kandy, Sri Lanka. BIOMED RESEARCH INTERNATIONAL 2019; 2019:7393926. [PMID: 31309114 PMCID: PMC6594343 DOI: 10.1155/2019/7393926] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 04/13/2019] [Accepted: 05/21/2019] [Indexed: 02/06/2023]
Abstract
Nosocomial infections, in lay term known as hospital acquired infections, are caused mainly by airborne pathogens found in healthcare facilities and their surroundings. The aim of this study was to quantify and identify bacteria and fungi in a hospital, which is an understudied area of air quality in Sri Lanka. Air samples were collected in agar medium and petri plates containing sterile filter papers. The number of culturable and total airborne microorganisms was estimated by manual counting and fluorescent microscopy, respectively. The morphologically distant bacteria and fungi were identified by DNA sequencing. The statistical analysis revealed significant variances between studied sites (p < 0.05) where Outpatients Department and Respiratory Unit showed higher levels of airborne microbial load. Culturable microbial count was higher at noon (hospital visiting hours) compared to other sampling periods (after hospital visiting hours) within the hospital. Total count of airborne microbes was found to be the highest during the afternoon. The most sensitive zones such as Operating Theatre and Intensive Care Unit showed considerably higher counts of airborne microbes. Identification by molecular means revealed the presence of human pathogens in the hospital air including Bacillus sp, Micrococcus sp, Pseudomonas sp, Staphylococcu ssp, Exiguobacterium sp, Enterobacter sp, Escherichia sp, Sphingomonas sp, Massilia sp, Kocuria sp, Fusarium sp, and Aspergillus sp. In conclusion, the results from this study indicate that the hospital air was generally contaminated. Therefore, the implementation of proactive policies and strategies are needed to monitor hospital air quality in sensitive zones as well as other areas of the hospitals.
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Abstract
Non-fermenting Gram-negative bacteria are problematic in clinical locations, being one of the most prevalent causes of nosocomial infections. Many of these non-fermenting Gram-negative bacteria are opportunistic pathogens that affect patients that are suffering with underlying medical conditions and diseases. Brevundimonas spp., in particular Brevundimonas diminuta and Brevundimonas vesicularis, are a genus of non-fermenting Gram-negative bacteria considered of minor clinical importance. Forty-nine separate instances of infection relating to Brevundimonas spp were found in the scientific literature along with two pseudo-infections. The majority of these instances were infection with Brevundimonas vesicularis (thirty-five cases – 71%). The major condition associated with Brevundimonas spp infection was bacteraemia with seventeen individual cases/outbreaks (35%). This review identified forty-nine examples of Brevundimonas spp. infections have been discussed in the literature. These findings indicate that infection review programs should consider investigation of possible Brevundimonas spp outbreaks if these bacteria are clinically isolated in more than one patient.
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Affiliation(s)
- Michael P Ryan
- a Industrial Biochemistry Programme, Department of Chemical Sciences , School of Natural Sciences, University of Limerick , Limerick , Ireland
| | - J Tony Pembroke
- b Molecular Biochemistry Laboratory, Department of Chemical Sciences , School of Natural Sciences, University of Limerick , Limerick , Ireland.,c Bernal Institute, University of Limerick , Limerick , Ireland
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Christiadi D, Singer RF, Roberts DM. Successful Treatment of PD Peritonitis Due to Brevundimonas vesicularis. Perit Dial Int 2018; 38:379-381. [PMID: 30185480 DOI: 10.3747/pdi.2018.00014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Brevundimonas vesicularis is a rare cause of peritoneal dialysis-associated peritonitis (PD peritonitis). One documented case report described poor outcome despite treatment with appropriate antibiotics. Here, we report the successful treatment of PD peritonitis due to Brevundimonas vesicularis with 21 days of intraperitoneal (IP) antibiotics using the regimen described for Pseudomonas aeruginosa, notably IP gentamicin (10 days) followed by IP cefepime and oral ciprofloxacin (11 days). Despite the favorable outcome, measurement of antibiotic concentrations in the PD effluent suggests that the cefepime and possibly ciprofloxacin regimens do not achieve key antibiotic concentration targets that are reported to maximize bacterial kill. The role of routine therapeutic drug monitoring to maximize clinical outcomes from antibiotic therapy for PD peritonitis requires further consideration.
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Affiliation(s)
| | - Richard F Singer
- Renal Medicine, The Canberra Hospital, Garran, ACT, Australia.,Medical School, Australian National University, Acton, ACT, Australia
| | - Darren M Roberts
- Renal Medicine, The Canberra Hospital, Garran, ACT, Australia .,Medical School, Australian National University, Acton, ACT, Australia
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9
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Bolzon C, Nguyen BH. A rare case of peritonitis due to Brevundimonas vesicularis. J Community Hosp Intern Med Perspect 2018; 8:161-162. [PMID: 29915660 PMCID: PMC5998283 DOI: 10.1080/20009666.2018.1478564] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Accepted: 05/15/2018] [Indexed: 11/23/2022] Open
Abstract
Healthcare associated infections due to gram negative bacilli are a major concern among healthcare institutions. While Pseudomonas and Escherichia coli species are known major organisms; other lesser known species can also cause primary infection. We present a case of peritonitis in a patient on a peritoneal dialysis regimen due to Brevundimonas vesicularis.
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Affiliation(s)
- Colin Bolzon
- SABA University School of Medicine, SABA Dutch Caribbean
| | - Binh Hoa Nguyen
- Department of Medicine, Internal Medicine Residency Program, Greater Baltimore Medical Center, Baltimore, MD, USA
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Stabler SN, Mack B, McCormack G, Cheng MP. Brevundimonas vesicularis Causing Bilateral Pneumosepsis in an Immunocompetent Adult: A Case Report and Literature Review. Can J Hosp Pharm 2018; 71:208-210. [PMID: 29955194 PMCID: PMC6019083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- Sarah N Stabler
- , BSc(Pharm), ACPR, PharmD, is with the Department of Critical Care and the Department of Pharmacy Services, Surrey Memorial Hospital, Surrey, British Columbia
| | - Benjamin Mack
- , MD, FRCPC, is with the Department of Laboratory Medicine and Pathology, Surrey Memorial Hospital, Surrey, British Columbia
| | - Grant McCormack
- , MD, FRCPC, is with the Department of Critical Care, Surrey Memorial Hospital, Surrey, British Columbia
| | - Matthew P Cheng
- , MD, FRCPC, is with the Division of Infectious Diseases and the Department of Medical Microbiology, McGill University Health Centre, Montréal, Quebec
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11
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Fang B, Li JW, Zhang M, Ren FZ, Pang GF. Chronic chlorpyrifos exposure elicits diet-specific effects on metabolism and the gut microbiome in rats. Food Chem Toxicol 2018; 111:144-152. [DOI: 10.1016/j.fct.2017.11.001] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 10/31/2017] [Accepted: 11/01/2017] [Indexed: 01/07/2023]
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Eberlein C, Heuer H, Vidal S, Westphal A. Microbial Communities in Globodera pallida Females Raised in Potato Monoculture Soil. PHYTOPATHOLOGY 2016; 106:581-590. [PMID: 26863445 DOI: 10.1094/phyto-07-15-0180-r] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Globodera spp. are under strict quarantine in many countries. Suppressiveness to cyst nematodes can evolve under monoculture of susceptible hosts. Females developing in potato monoculture soil infested with G. pallida populations Chavornay or Delmsen were examined for inherent microbial communities. In the greenhouse, nonheated and heat-treated (134°C for 10 min) portions of this soil were placed in root observation chambers, planted with Solanum tuberosum 'Selma', and inoculated with G. pallida Pa3 Chavornay. At harvest in Delmsen soil, cysts had fewer eggs in nonheated than heat-treated soil. In denaturing gradient gel electrophoresis analysis, bacterial and fungal fingerprints were characterized by a high variability between replicates; nonheated soils displayed more dominant bands than heated soils, indicating more bacterial and fungal populations. In amplicon pyrosequencing, females from nonheated portions frequently contained internal transcribed spacer sequences of the fungus Malassezia. Specific for the Chavornay and Delmsen population, ribosomal sequences of the bacteria Burkolderia and Ralstonia were abundant on eggs. In this first report of microbial communities in G. pallida raised in potato monoculture, candidate microorganisms perhaps associated with the health status of the eggs of G. pallida were identified. If pathologies on cyst nematodes can be ascertained, these organisms could improve the sustainability of production systems.
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Affiliation(s)
- Caroline Eberlein
- First and fourth authors: Institute for Plant Protection in Field Crops and Grassland, Julius Kühn-Institut, D-38104 Braunschweig, Germany; second author: Institute for Epidemiology and Pathogen Diagnostic, Julius Kühn-Institut, D-38104 Braunschweig, Germany; and third author: Department of Crop Sciences, University of Göttingen, 37077 Göttingen, Germany
| | - Holger Heuer
- First and fourth authors: Institute for Plant Protection in Field Crops and Grassland, Julius Kühn-Institut, D-38104 Braunschweig, Germany; second author: Institute for Epidemiology and Pathogen Diagnostic, Julius Kühn-Institut, D-38104 Braunschweig, Germany; and third author: Department of Crop Sciences, University of Göttingen, 37077 Göttingen, Germany
| | - Stefan Vidal
- First and fourth authors: Institute for Plant Protection in Field Crops and Grassland, Julius Kühn-Institut, D-38104 Braunschweig, Germany; second author: Institute for Epidemiology and Pathogen Diagnostic, Julius Kühn-Institut, D-38104 Braunschweig, Germany; and third author: Department of Crop Sciences, University of Göttingen, 37077 Göttingen, Germany
| | - Andreas Westphal
- First and fourth authors: Institute for Plant Protection in Field Crops and Grassland, Julius Kühn-Institut, D-38104 Braunschweig, Germany; second author: Institute for Epidemiology and Pathogen Diagnostic, Julius Kühn-Institut, D-38104 Braunschweig, Germany; and third author: Department of Crop Sciences, University of Göttingen, 37077 Göttingen, Germany
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Nicoletti G, Corbella M, Jaber O, Marone P, Scevola D, Faga A. Non-pathogenic microflora of a spring water with regenerative properties. Biomed Rep 2015; 3:758-762. [PMID: 26623012 PMCID: PMC4660603 DOI: 10.3892/br.2015.507] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2015] [Accepted: 07/24/2015] [Indexed: 12/28/2022] Open
Abstract
The Comano spring water (Comano, Italy) has been demonstrated to improve skin regeneration, not only by increasing keratinocyte proliferation and migration, but also by modulating the regenerated collagen and elastic fibers in the dermis. However, such biological properties may not be entirely explained by its mineral composition only. As the non-pathogenic bacterial populations have demonstrated an active role in different biological processes, the potential presence of non-pathogenic bacterial species within the Comano spring water was investigated in order to identify any possible correlation between these bacterial populations and the demonstrated biological properties of this water. The water was collected at the spring using an aseptic procedure and multiple cultures were carried out. A total of 9 different strains were isolated, which were Aeromonas hydrophila, Brevundimonas vesicularis, Chromobacterium violaceum, Citrobacter youngae, Empedobacter brevis, Pantoea agglomerans, Pseudomonas putida, Pseudomonas stutzeri and Streptococcus mitis. All the isolated bacterial strains, although showing a rare potential virulence, demonstrated peculiar and favorable metabolic attitudes in controlling environmental pollution. The therapeutical effects of certain spring waters are currently being proven as correlated not only to their peculiar mineral composition, but also to the complex activity of their resident non-pathogenic bacterial populations. Although the present study provided only preliminary data, some of the non-pathogenic bacterial populations that were identified in the Comano spring water are likely to produce molecular mediators with a role in the wound healing process that, thus far, remain unknown. Numerous other unknown bacterial species, comprehensively termed DNA-rich 'dark matter', are likely to contribute to the Comano water regenerative properties as well. Therefore, the non-pathogenic bacterial populations of the Comano spring water are possibly credited for its demonstrated regenerative properties.
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Affiliation(s)
- Giovanni Nicoletti
- Plastic and Reconstructive Surgery, Department of Clinical Surgical Diagnostic and Pediatric Sciences, University of Pavia, I-27100 Pavia, Italy ; Plastic and Reconstructive Surgery Unit, Salvatore Maugeri Research and Care Institute, I-27100 Pavia, Italy ; Advanced Technologies for Regenerative Medicine and Inductive Surgery Research Centre, University of Pavia, I-27100 Pavia, Italy
| | - Marta Corbella
- Department of Infectious Diseases, San Matteo Research and Care Institute, I-27100 Pavia, Italy
| | - Omar Jaber
- Plastic and Reconstructive Surgery, Department of Clinical Surgical Diagnostic and Pediatric Sciences, University of Pavia, I-27100 Pavia, Italy ; Plastic and Reconstructive Surgery Unit, Salvatore Maugeri Research and Care Institute, I-27100 Pavia, Italy ; Advanced Technologies for Regenerative Medicine and Inductive Surgery Research Centre, University of Pavia, I-27100 Pavia, Italy
| | - Piero Marone
- Department of Infectious Diseases, San Matteo Research and Care Institute, I-27100 Pavia, Italy
| | - Daniele Scevola
- Department of Infectious Diseases, San Matteo Research and Care Institute, I-27100 Pavia, Italy ; Department of Internal Medicine and Medical Therapeutics, University of Pavia, I-27100 Pavia, Italy
| | - Angela Faga
- Plastic and Reconstructive Surgery, Department of Clinical Surgical Diagnostic and Pediatric Sciences, University of Pavia, I-27100 Pavia, Italy ; Plastic and Reconstructive Surgery Unit, Salvatore Maugeri Research and Care Institute, I-27100 Pavia, Italy ; Advanced Technologies for Regenerative Medicine and Inductive Surgery Research Centre, University of Pavia, I-27100 Pavia, Italy
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Sohn KM, Huh K, Baek JY, Kim YS, Kang CI, Peck KR, Lee NY, Song JH, Ko KS, Chung DR. A new causative bacteria of infective endocarditis, Bergeyella cardium sp. nov. Diagn Microbiol Infect Dis 2014; 81:213-6. [PMID: 25544000 DOI: 10.1016/j.diagmicrobio.2014.12.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Revised: 12/05/2014] [Accepted: 12/05/2014] [Indexed: 12/21/2022]
Abstract
The first cases of infective endocarditis due to a new species of Bergeyella, Bergeyella cardium sp. nov., are reported. Two strains, 13-07(T) (= JCM 30115(T) = NCCP 15908(T)) and 13-16, were independently isolated from 2 patients in different hospitals in Korea. Initially, the isolates were identified as Brevundimonas spp.; however, their 16S rRNA gene sequences shared a similarity of 94.9% with Bergeyella zoohelcum, implying that they are a new species belonging to of the genus Bergeyella. The organisms might be susceptible to many commonly used antibiotics, including penicillin. The first case was successfully treated with ceftriaxone, and the second, with piperacillin/tazobactam plus amikacin.
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Affiliation(s)
- Kyung Mok Sohn
- Division of Infectious Diseases, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Kyungmin Huh
- Division of Infectious Diseases, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jin-Yang Baek
- Asia Pacific Foundation for Infectious Diseases (APFID), Seoul, Republic of Korea
| | - Yeon-Sook Kim
- Division of Infectious Diseases, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Cheol-In Kang
- Division of Infectious Diseases, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Kyong Ran Peck
- Division of Infectious Diseases, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Nam Yong Lee
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jae-Hoon Song
- Division of Infectious Diseases, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Kwan Soo Ko
- Asia Pacific Foundation for Infectious Diseases (APFID), Seoul, Republic of Korea; Department of Molecular Cell Biology, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea.
| | - Doo Ryeon Chung
- Division of Infectious Diseases, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea.
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Bacteremia due to Brevundimonas vesicularis. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2013; 46:143. [DOI: 10.1016/j.jmii.2013.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Accepted: 02/15/2013] [Indexed: 11/22/2022]
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