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Montemari AL, Marzano V, Essa N, Levi Mortera S, Rossitto M, Gardini S, Selan L, Vrenna G, Onetti Muda A, Putignani L, Fiscarelli EV. A Shaving Proteomic Approach to Unveil Surface Proteins Modulation of Multi-Drug Resistant Pseudomonas aeruginosa Strains Isolated From Cystic Fibrosis Patients. Front Med (Lausanne) 2022; 9:818669. [PMID: 35355602 PMCID: PMC8959810 DOI: 10.3389/fmed.2022.818669] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 01/31/2022] [Indexed: 11/13/2022] Open
Abstract
Cystic fibrosis (CF) is the most common rare disease caused by a mutation of the CF transmembrane conductance regulator gene encoding a channel protein of the apical membrane of epithelial cells leading to alteration of Na+ and K+ transport, hence inducing accumulation of dense and sticky mucus and promoting recurrent airway infections. The most detected bacterium in CF patients is Pseudomonas aeruginosa (PA) which causes chronic colonization, requiring stringent antibiotic therapies that, in turn induces multi-drug resistance. Despite eradication attempts at the first infection, the bacterium is able to utilize several adaptation mechanisms to survive in hostile environments such as the CF lung. Its adaptive machinery includes modulation of surface molecules such as efflux pumps, flagellum, pili and other virulence factors. In the present study we compared surface protein expression of PA multi- and pan-drug resistant strains to wild-type antibiotic-sensitive strains, isolated from the airways of CF patients with chronic colonization and recent infection, respectively. After shaving with trypsin, microbial peptides were analyzed by tandem-mass spectrometry on a high-resolution platform that allowed the identification of 174 differentially modulated proteins localized in the region from extracellular space to cytoplasmic membrane. Biofilm assay was performed to characterize all 26 PA strains in term of biofilm production. Among the differentially expressed proteins, 17 were associated to the virulome (e.g., Tse2, Tse5, Tsi1, PilF, FliY, B-type flagellin, FliM, PyoS5), six to the resistome (e.g., OprJ, LptD) and five to the biofilm reservoir (e.g., AlgF, PlsD). The biofilm assay characterized chronic antibiotic-resistant isolates as weaker biofilm producers than wild-type strains. Our results suggest the loss of PA early virulence factors (e.g., pili and flagella) and later expression of virulence traits (e.g., secretion systems proteins) as an indicator of PA adaptation and persistence in the CF lung environment. To our knowledge, this is the first study that, applying a shaving proteomic approach, describes adaptation processes of a large collection of PA clinical strains isolated from CF patients in early and chronic infection phases.
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Affiliation(s)
- Anna Lisa Montemari
- Department of Diagnostics and Laboratory Medicine, Unit of Microbiology and Diagnostic Immunology, Unit of Cystic Fibrosis Diagnostics, Bambino Gesù Children's Hospital IRCCS, Rome, Italy
| | - Valeria Marzano
- Multimodal Laboratory Medicine Research Area, Unit of Human Microbiome, Bambino Gesù Children's Hospital IRCCS, Rome, Italy
| | - Nour Essa
- Department of Diagnostics and Laboratory Medicine, Unit of Microbiology and Diagnostic Immunology, Unit of Cystic Fibrosis Diagnostics, Bambino Gesù Children's Hospital IRCCS, Rome, Italy
| | - Stefano Levi Mortera
- Multimodal Laboratory Medicine Research Area, Unit of Human Microbiome, Bambino Gesù Children's Hospital IRCCS, Rome, Italy
| | - Martina Rossitto
- Department of Diagnostics and Laboratory Medicine, Unit of Microbiology and Diagnostic Immunology, Unit of Cystic Fibrosis Diagnostics, Bambino Gesù Children's Hospital IRCCS, Rome, Italy
| | | | - Laura Selan
- Department of Public Health and Infectious Diseases, Sapienza University, Rome, Italy
| | - Gianluca Vrenna
- Department of Public Health and Infectious Diseases, Sapienza University, Rome, Italy
| | - Andrea Onetti Muda
- Department of Diagnostics and Laboratory Medicine, Bambino Gesù Children's Hospital IRCCS, Rome, Italy
| | - Lorenza Putignani
- Department of Diagnostics and Laboratory Medicine, Unit of Microbiology and Diagnostic Immunology, Unit of Microbiomics, and Multimodal Laboratory Medicine Research Area, Unit of Human Microbiome, Bambino Gesù Children's Hospital IRCCS, Rome, Italy
| | - Ersilia Vita Fiscarelli
- Department of Diagnostics and Laboratory Medicine, Unit of Microbiology and Diagnostic Immunology, Unit of Cystic Fibrosis Diagnostics, Bambino Gesù Children's Hospital IRCCS, Rome, Italy
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Silva VO, Espeschit IF, Moreira MAS. Clonal relationship of Escherichia coli biofilm producer isolates obtained from mastitic milk. Can J Microbiol 2013; 59:291-3. [DOI: 10.1139/cjm-2013-0053] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Escherichia coli is capable of producing several virulence factors involved in the pathophysiology of bovine mastitis. Cell surface structures such as flagella, pili, and other outer membrane adhesins are considered essential for biofilm formation on abiotic surfaces. The aim of this study was characterize the molecular profile of E. coli isolates obtained from mastitic milk by using the technique of pulsed-field gel electrophoresis (PFGE) and evaluating results within the pulsetypes formed with the presence of virulence genes involved in biofilm production. Twenty-seven E. coli biofilm-producing isolates were obtained from mastitic milk samples belonging to Brazilian Agricultural Research Corporation; these samples were analyzed by PFGE. We identified 9 (I to IX) different phylogenetic groups with a similarity of 90% and observed the presence of fimA (large subunit of the fimbriae type 1) and csgA gene (large subunit of curli fimbriae) in all isolates. Sixteen isolates had the gene fliC (flagellin). Evaluation of the genetic profile carried out through the PFGE showed that the bacteria do not share the same origin. It was not possible to associate the biofilm production capacity with the presence or absence of related genes. Therefore, strains of environmental mastitis-causing E. coli present different pathotypes.
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Affiliation(s)
- Vitor Oliveira Silva
- Division of Preventive Veterinary Medicine and Public Health, Department of Veterinary, Federal University of Viçosa. PH Rolfs Avenue, s/n, Zip Code: 36570-000, Viçosa, MG, Brazil
| | - Isis Freitas Espeschit
- Division of Preventive Veterinary Medicine and Public Health, Department of Veterinary, Federal University of Viçosa. PH Rolfs Avenue, s/n, Zip Code: 36570-000, Viçosa, MG, Brazil
| | - Maria Aparecida Scatamburlo Moreira
- Division of Preventive Veterinary Medicine and Public Health, Department of Veterinary, Federal University of Viçosa. PH Rolfs Avenue, s/n, Zip Code: 36570-000, Viçosa, MG, Brazil
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Nandi SP, Sultana M, Hossain MA. Prevalence and characterization of multidrug-resistant zoonotic Enterobacter spp. in poultry of Bangladesh. Foodborne Pathog Dis 2013; 10:420-7. [PMID: 23560422 DOI: 10.1089/fpd.2012.1388] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Poultry and poultry products are major contributors of zoonotic pathogens. Limited data are available on Enterobacter spp. as a potent zoonotic pathogen in poultry. The present study is a first endeavor on the emergence of multidrug-resistant zoonotic Enterobacter spp. and its prevalence arising from poultry in Bangladesh. Cloacal swabs from poultry samples of five different farms at Savar, Dhaka, Bangladesh were collected and from 106 isolates, 18 presumptive Enterobacter spp. were obtained. Antibiogram using 19 used antibiotics belonging to 15 major groups revealed that all of the 18 isolates were completely resistant to penicillin and rifampicin, but differed in their drug resistance pattern against ampicillin (94.4%), clindamycin (94.4%), erythromycin (94.4%), vancomycin (88.9%), sulfonamides (72.2%), imipenem (66.6%), streptomycin (55.6%), nitrofurantoin (33.3%), doxycycline (33.3%), tetracyclines (33.3%), cefepime (11.1%), and gentamicin (5.6%). All Enterobacter spp. were found to be plasmid free, implying that multidrug-resistant properties are chromosomal borne. The vanA and sulI were detected by polymerase chain reaction assay in 17 and 13 isolates, respectively. Amplified ribosomal DNA restriction analysis and randomly amplified polymorphic DNA distributed the 18 multidrug-resistant Enterobacter spp. into three genotypes. Phylogenetic analysis of the representatives of the three genotypes using partial 16S rRNA gene sequence (approximately 900 bp) showed that the genotypically diverse groups belonged to Enterobacter hormaechei, E. cloacae, and E. cancerogenus, respectively. The clinical significance of the close relative Enterobacter spp. is indicative of their zoonotic potential. Therefore, urgent intervention is required to limit the emergence and spread of these bacteria in poultry feed as well as prudent use of antibiotics among poultry farmers in Bangladesh.
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Piñón-Castillo H, Brito E, Goñi-Urriza M, Guyoneaud R, Duran R, Nevarez-Moorillon G, Gutiérrez-Corona J, Caretta C, Reyna-López G. Hexavalent chromium reduction by bacterial consortia and pure strains from an alkaline industrial effluent. J Appl Microbiol 2010; 109:2173-82. [DOI: 10.1111/j.1365-2672.2010.04849.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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