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Suleiman M, Abu-Aqil G, Lapidot I, Huleihel M, Salman A. Significant reduction of the culturing time required for bacterial identification and antibiotic susceptibility determination by infrared spectroscopy. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:3745-3756. [PMID: 38818530 DOI: 10.1039/d4ay00604f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
Rapid testing of bacteria for antibiotic susceptibility is essential for effective treatment and curbing the emergence of multidrug-resistant bacteria. The misuse of antibiotics, coupled with the time-consuming classical testing methods, intensifies the threat of antibiotic resistance, a major global health concern. In this study, employing infrared spectroscopy-based machine learning techniques, we significantly shortened the time required for susceptibility testing to 10 hours, a significant improvement from the 24 hours in our previous studies as well as the conventional methods that typically take at least 48 hours. This remarkable reduction in turnaround time (from 48 hours to 10 hours), achieved by minimizing the culturing period, offers a game-changing advantage for clinical applications. Our study involves a dataset comprising 400 bacterial samples (200 E. coli, 100 Klebsiella pneumoniae, and 100 Pseudomonas aeruginosa) with an impressive 96% accuracy in the taxonomic classification at the species level and up to 82% accuracy in bacterial susceptibility to various antibiotics.
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Affiliation(s)
- Manal Suleiman
- Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.
| | - George Abu-Aqil
- Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.
| | - Itshak Lapidot
- Department of Electrical Engineering, ACLP-Afeka Center for Language Processing, Afeka Tel-Aviv Academic College of Engineering, Tel-Aviv 69107, Israel
- Laboratoire Informatique d'Avignon (LIA), Avignon Université, 339 Chemin des Meinajaries, 84000 Avignon, France
| | - Mahmoud Huleihel
- Department of Microbiology, Immunology, and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.
| | - Ahmad Salman
- Department of Physics, SCE - Shamoon College of Engineering, Beer-Sheva 84100, Israel.
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2
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Heine L, Alfinete NW, Potgieter N, Barnard TG. Multi- and extensively drug resistant Escherichia coli isolated from South African children under 5 years old with diarrhoea. Diagn Microbiol Infect Dis 2024; 109:116279. [PMID: 38547800 DOI: 10.1016/j.diagmicrobio.2024.116279] [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: 11/26/2023] [Revised: 03/08/2024] [Accepted: 03/19/2024] [Indexed: 04/30/2024]
Abstract
BACKGROUND Globally, millions of children die as a result of diarrhoea and/or antimicrobial resistant infections. Diarrhoeagenic Escherichia coli (DEC) are responsible for a substantial proportion of cases of diarrhoea in South Africa and sub-Saharan Africa. Effective treatments (including the use of antimicrobials) are therefore essential. METHODOLOGY E. coli isolated from children under the age of five were subjected to antimicrobial susceptibility testing using the Vitek 2® compact automated system (bioMérieux Inc., France) and categorized as multidrug or extensively drug resistant (MDR or XDR). RESULTS Almost all isolates (164/166, 98.8 %) were categorized as MDR with 4.9 % (9/166) categorized as XDR. The majority of isolates (153/166, 92.2 %) were also phenotypically classified as extended-spectrum β-lactamase (ESBL) producers. More than half of these isolates (78/153, 51.0 %) were subjected to PCR for genes associated with ESBL production. More than half (45/78, 57.7 %) of the isolates tested were PCR positive for at least one ESBL gene or gene group and 11.5 % (9/78) were positive for two ESBL genes or gene groups. DISCUSSION There is a need to strengthen antimicrobial resistance surveillance in South Africa and improve infection prevention and control measures. There is also a need to review the current South African Treatment Guidelines as outlined by the South African Essential Drugs Programme.
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Affiliation(s)
- Lee Heine
- Water and Health Research Centre, University of Johannesburg, Johannesburg, Gauteng, South Africa.
| | - Ntando W Alfinete
- Water and Health Research Centre, University of Johannesburg, Johannesburg, Gauteng, South Africa
| | - Natasha Potgieter
- Department of Microbiology, One Health Research Group, University of Venda, Thohoyandou, Limpopo, South Africa
| | - Tobias G Barnard
- Water and Health Research Centre, University of Johannesburg, Johannesburg, Gauteng, South Africa
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3
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Romyasamit C, Sornsenee P, Kawila S, Saengsuwan P. Extended-spectrum beta-lactamase-producing Escherichia coli and Klebsiella pneumoniae: insights from a tertiary hospital in Southern Thailand. Microbiol Spectr 2024:e0021324. [PMID: 38809095 DOI: 10.1128/spectrum.00213-24] [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: 01/23/2024] [Accepted: 04/12/2024] [Indexed: 05/30/2024] Open
Abstract
Broad-spectrum ampicillin-resistant and third-generation cephalosporin-resistant Enterobacteriaceae, particularly Escherichia coli and Klebsiella pneumoniae that have pathological features in humans, have become a global concern. This study aimed to investigate the prevalence, antimicrobial susceptibility, and molecular genetic features of extended-spectrum beta-lactamase (ESBL)-producing E. coli and K. pneumoniae isolates in Southern Thailand. Between January and August 2021, samples (n = 199) were collected from a tertiary care hospital in Southern Thailand. ESBL and AmpC-lactamase genes were identified using multiplex polymerase chain reaction (PCR). The genetic relationship between ESBL-producing E. coli and K. pneumoniae was determined using the enterobacterial repetitive intergenic consensus (ERIC) polymerase chain reaction. ESBL-producing E. coli and K. pneumoniae isolates were mostly collected from catheter urine samples of infected female patients. The ESBL production prevalence was highest in the medical wards (n = 75, 37.7%), followed by that in surgical wards (n = 64, 32.2%) and operating rooms (n = 19, 9.5%). Antimicrobial susceptibility analysis revealed that all isolates were resistant to ampicillin, cefotaxime, ceftazidime, ceftriaxone, and cefuroxime; 79.4% were resistant to ciprofloxacin; and 64.3% were resistant to trimethoprim-sulfamethoxazole. In ESBL-producing K. pneumoniae and E. coli, blaTEM (n = 57, 72.2%) and blaCTX-M (n = 61, 50.8%) genes were prominent; however, no blaVEB, blaGES, or blaPER were found in any of these isolates. Furthermore, only ESBL-producing K. pneumoniae had co-harbored blaTEM and blaSHV genes at 11.6%. The ERIC-PCR pattern of multidrug-resistant ESBL-producing strains demonstrated that the isolates were clonally related (95%). Notably, the presence of multidrug-resistant and extremely resistant ESBL producers was 83.4% and 16.6%, respectively. This study highlights the presence of blaTEM, blaCTX-M, and co-harbored genes in ESBL-producing bacterial isolates from hospitalized patients, which are associated with considerable resistance to beta-lactamase and third-generation cephalosporins. IMPORTANCE We advocate for evidence-based guidelines and antimicrobial stewardship programs to encourage rational and appropriate antibiotic use, ultimately reducing the selection pressure for drug-resistant bacteria and lowering the likelihood of ESBL-producing bacterial infections.
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Affiliation(s)
- Chonticha Romyasamit
- School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, Thailand
| | - Phoomjai Sornsenee
- Department of Family Medicine and Preventive Medicine, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Soontara Kawila
- Microbiology Unit, Department of Pathology, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Phanvasri Saengsuwan
- Department of Biomedical Sciences and Biomedical Engineering, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, Thailand
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4
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Jing W, Guo R, Zhu X, Peng S, Li H, Xu D, Hu L, Mo H. Ferrous gluconate triggers ferroptosis in Escherichia coli: Implications of lipid peroxidation and DNA damage. Microbiol Res 2024; 284:127711. [PMID: 38636240 DOI: 10.1016/j.micres.2024.127711] [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: 03/13/2024] [Revised: 03/28/2024] [Accepted: 04/01/2024] [Indexed: 04/20/2024]
Abstract
Microbial ferroptosis has been proved to combat drug-resistant pathogens, but whether this pattern can be applied to the prevention and control of Escherichia coli remains to be further explored. In this study, ferrous gluconate (FeGlu) showed remarkable efficacy in killing E. coli MG1655 with a mortality rate exceeding 99.9%, as well as enterotoxigenic E. coli H10407 (ETEC H10407) and enterohemorrhagic E. coli O157:H7 (EHEC O157:H7). Bacteria death was instigated by the infiltration of Fe2+, accompanied by a burst of intracellular reactive oxygen species (ROS) and lipid peroxidation. Notably, mitigating lipid peroxidation failed to alleviate death of E. coli. Further findings confirmed that FeGlu induced DNA damage, and ΔrecA mutant showed more sensitive, implicating that DNA damage was involved in the death of E. coli. The direct interaction of Fe2+ with DNA was demonstrated by fluorescent staining, gel electrophoresis, and circular dichroism (CD). Moreover, proteomic analysis unveiled 50 differentially expressed proteins (DEPs), including 18 significantly down-regulated proteins and 32 significantly up-regulated proteins. Among them, the down-regulation of SOS-responsive transcriptional suppressor LexA indicated DNA damage induced severely by FeGlu. Furthermore, FeGlu influenced pathways such as fatty acid metabolism (FadB, FadE), iron-sulfur cluster assembly (IscA, IscU, YadR), iron binding, and DNA-binding transcription, along with α-linolenic acid metabolism, fatty acid degradation, and pyruvate metabolism. These pathways were related to FeGlu stress, including lipid peroxidation and DNA damage. In summary, FeGlu facilitated ferroptosis in E. coli through mechanisms involving lipid peroxidation and DNA damage, which presents a new strategy for the development of innovative antimicrobial strategies targeting E. coli infections.
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Affiliation(s)
- Wenhui Jing
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Rongxian Guo
- Laboratory of Functional Microbiology and Animal Health, College of Animal Science and Technology, Henan University of Science and Technology, Luoyang 471003, China; Luoyang Key Laboratory of Live Carrier Biomaterial and Animal Disease Prevention and Control, Luoyang 471003, China
| | - Xiaolin Zhu
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Shurui Peng
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Hongbo Li
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Dan Xu
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Liangbin Hu
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
| | - Haizhen Mo
- School of Food Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
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Pecha S, Reuter L, Ohdah S, Petersen J, Pahrmann C, Aytar Çelik P, Çabuk A, Reichenspurner H, Yildirim Y. Bionic Nanocoating of Prosthetic Grafts Significantly Reduces Bacterial Growth. ACS APPLIED MATERIALS & INTERFACES 2024; 16:13534-13542. [PMID: 38447594 PMCID: PMC10958452 DOI: 10.1021/acsami.3c18634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Revised: 02/15/2024] [Accepted: 02/16/2024] [Indexed: 03/08/2024]
Abstract
Prosthetic materials are a source of bacterial infections, with significant morbidity and mortality. Utilizing the bionic "Lotus effect," we generated superhydrophobic vascular prostheses by nanocoating and investigated their resistance to bacterial colonization. Nanoparticles were generated from silicon dioxide (SiO2), and coated vascular prostheses developed a nanoscale roughness with superhydrophobic characteristics. Coated grafts and untreated controls were incubated with different bacterial solutions including heparinized blood under mechanical stress and during artificial perfusion and were analyzed. Bioviability- and toxicity analyses of SiO2 nanoparticles were performed. Diameters of SiO2 nanoparticles ranged between 20 and 180 nm. Coated prostheses showed a water contact angle of > 150° (mean 154 ± 3°) and a mean water roll-off angle of 9° ± 2°. Toxicity and viability experiments demonstrated no toxic effects of SiO2 nanoparticles on human induced pluripotent stem cell-derived cardiomyocytes endothelial cells, fibroblasts, and HEK239T cells. After artificial perfusion with a bacterial solution (Luciferase+ Escherichia coli), bioluminescence imaging measurements showed a significant reduction of bacterial colonization of superhydrophobic material-coated prostheses compared to that of untreated controls. At the final measurement (t = 60 min), a 97% reduction of bacterial colonization was observed with superhydrophobic material-coated prostheses. Superhydrophobic vascular prostheses tremendously reduced bacterial growth. During artificial perfusion, the protective superhydrophobic effects of the vascular grafts could be confirmed using bioluminescence imaging.
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Affiliation(s)
- Simon Pecha
- Department
of Cardiovascular Surgery, University Heart
and Vascular Center, 20246 Hamburg, Germany
- DZHK
(German Centre for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, 20246 Hamburg, Germany
| | - Lukas Reuter
- Department
of Cardiovascular Surgery, University Heart
and Vascular Center, 20246 Hamburg, Germany
- DZHK
(German Centre for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, 20246 Hamburg, Germany
| | - Shahabuddin Ohdah
- Department
of Radiology, University Medical Center
Hamburg Eppendorf, 20246 Hamburg, Germany
| | - Johannes Petersen
- Department
of Cardiovascular Surgery, University Heart
and Vascular Center, 20246 Hamburg, Germany
- DZHK
(German Centre for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, 20246 Hamburg, Germany
| | - Christiane Pahrmann
- Department
of Cardiovascular Surgery, University Heart
and Vascular Center, 20246 Hamburg, Germany
| | - Pinar Aytar Çelik
- Department
of Biotechnology and Biosafety, Graduate School of Natural and Applied
Science, Eskisehir Osmangazi University, 26480 Eskisehir, Turkey
| | - Ahmet Çabuk
- Department
of Biology, Faculty of Science and Letter, Eskişehir Osmangazi University, 26040 Eskişehir, Turkey
| | - Hermann Reichenspurner
- Department
of Cardiovascular Surgery, University Heart
and Vascular Center, 20246 Hamburg, Germany
- DZHK
(German Centre for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, 20246 Hamburg, Germany
| | - Yalin Yildirim
- Department
of Cardiovascular Surgery, University Heart
and Vascular Center, 20246 Hamburg, Germany
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Muthusamy R, Mahesh S, Travasso C. Antibiotic Profiling of E. coli Borne UTI Infection in Tertiary Healthcare Settings. Cureus 2024; 16:e56632. [PMID: 38646249 PMCID: PMC11032086 DOI: 10.7759/cureus.56632] [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] [Received: 01/05/2024] [Accepted: 03/21/2024] [Indexed: 04/23/2024] Open
Abstract
Introduction In general, with frequent recurrence of urinary tract infections (UTIs), long-term antibiotic therapy is stipulated at a low dose. With this type of situation and with easy access to several classes of antibiotics in tertiary health care settings, the use of such drugs results in the development of resistant bacteria in patients. Escherichia coli is a frequent cause of UTI observed. Hence, it was proposed in the present study to assess the antimicrobial resistance status of E. coli in UTI-infected patients. Methods This study was conducted among female patients diagnosed with UTI. About 80 urine samples were collected in an aseptic condition, Under the process of culture identification 44 samples were found to be positive for UTI infection. The positive samples were plated on blood agar. Out of 44 samples, 18 samples were found to be positive, and 26 samples were negative for E. coli infection. The 18 samples were screened on MALDI-TOF for identification. Further, the samples were assessed for susceptibility to antibiotic medication within the study area. Result The study identified different strains of E. coli, and the CHB gene E. coli was found in eight samples. The sample showed pink oval-round spots in the culture medium and was resistant to nitrofurantoin, cephalosporin, and cephalexin antibiotics. Hence, antimicrobial susceptibility tests are necessary for managing and treating bacterial E. coli infections. Conclusion E. coli is a common bacterium found in the vaginal region of patients, suggesting a potential infection. E. coli can be associated with UTIs in women. The results from this study conclude that E. coli is rapidly becoming multidrug-resistant, as only higher antibiotics can inhibit its growth. To effectively manage infections caused by E. coli proper diagnosis, laboratory testing, and antibiotic treatment are required.
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Affiliation(s)
- Raman Muthusamy
- Microbiology, Saveetha Institute of Medical and Technical Sciences, Chennai, IND
| | - Saisri Mahesh
- Medicine, Saveetha Institute of Medical and Technical Sciences, Chennai, IND
| | - Christy Travasso
- Microbiology, Saveetha Institute of Medical and Technical Sciences, Chennai, IND
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Li XD, Lu Y, Luo CY, Xin WG, Kang X, Lin YC, Lin LB. Lacticaseibacillus chiayiensis mediate intestinal microbiome and microbiota-derived metabolites regulating the growth and immunity of chicks. Vet Microbiol 2024; 290:109969. [PMID: 38211362 DOI: 10.1016/j.vetmic.2023.109969] [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: 10/20/2023] [Revised: 12/06/2023] [Accepted: 12/21/2023] [Indexed: 01/13/2024]
Abstract
Emerging evidence confirms beneficial properties of probiotics in promoting growth and immunity of farmed chicken. However, the molecular mechanisms underlying the host-microbiome interactions mediated by probiotics are not fully understood. In this study, the internal mechanisms of Lacticaseibacillus chiayiensis-mediated host-microbiome interactions and to elucidate how it promotes host growth were investigated by additional supplementation with L. chiayiensis. We conducted experiments, including intestinal cytokines, digestive enzymes test, intestinal microbiome, metabolome and transcriptome analysis. The results showed that chickens fed L. chiayiensis exhibited higher body weight gain and digestive enzyme activity, and lower pro-inflammatory cytokines, compared to controls. Microbiota sequencing analysis showed that the gut microbiota structure was reshaped with L. chiayiensis supplementation. Specifically, Lactobacillus and Escherichia increased in abundance and Enterococcus, Lactococcus, Corynebacterium, Weissella and Gallicola decreased. In addition, the bacterial community diversity was significantly increased compared to controls. Metabolomic and transcriptomic analyses revealed that higher bile acids and N-acyl amides concentrations and lower carbohydrates concentrations in L. chiayiensis-fed chickens. Meanwhile, the expression of genes related to nutrient transport and absorption in the intestine was upregulated, which reflected the enhanced digestion and absorption of nutrients in chickens supplemented with L. chiayiensis. Moreover, supplementation of L. chiayiensis down-regulated genes involved in inflammation-related, mainly involved in NF-κB signaling pathway and MHC-II mediated antigen presentation process. Cumulatively, these findings highlight that host-microbiota crosstalk enhances the host growth phenotype in two ways: by enhancing bile acid metabolism and digestive enzyme activity, and reducing the occurrence of intestinal inflammation to promote nutrient absorption and maintain intestinal health. This provides a basis for the application of LAB as an alternative to antibiotics in animal husbandry.
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Affiliation(s)
- Xin-Dong Li
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China; Engineering Research Center for Replacement Technology of Feed Antibiotics of Yunnan College, Kunming 650500, Yunnan, China
| | - Yao Lu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China; Engineering Research Center for Replacement Technology of Feed Antibiotics of Yunnan College, Kunming 650500, Yunnan, China
| | - Cheng-Ying Luo
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China; Engineering Research Center for Replacement Technology of Feed Antibiotics of Yunnan College, Kunming 650500, Yunnan, China
| | - Wei-Gang Xin
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China; Engineering Research Center for Replacement Technology of Feed Antibiotics of Yunnan College, Kunming 650500, Yunnan, China
| | - Xin Kang
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China; Engineering Research Center for Replacement Technology of Feed Antibiotics of Yunnan College, Kunming 650500, Yunnan, China
| | - Yi-Cen Lin
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China; Engineering Research Center for Replacement Technology of Feed Antibiotics of Yunnan College, Kunming 650500, Yunnan, China.
| | - Lian-Bing Lin
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, Yunnan, China; Engineering Research Center for Replacement Technology of Feed Antibiotics of Yunnan College, Kunming 650500, Yunnan, China.
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Tabussam T, Shehnaz H, Majeed MI, Nawaz H, Alghamdi AA, Iqbal MA, Shahid M, Shahid U, Umer R, Rehman MT, Farooq U, Hassan A, Imran M. Surface-enhanced Raman spectroscopy for studying the interaction of organometallic compound bis(1,3-dihexylimidazole-2-yl) silver(i) hexafluorophosphate (v) with the biofilm of Escherichia coli. RSC Adv 2024; 14:7112-7123. [PMID: 38419676 PMCID: PMC10899858 DOI: 10.1039/d3ra08667d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 01/23/2024] [Indexed: 03/02/2024] Open
Abstract
Escherichia coli biofilms are a major cause of gastrointestinal tract diseases, such as esophageal, stomach and intestinal diseases. Nowadays, these are the most commonly occurring diseases caused by consuming contaminated food. In this study, we evaluated the efficacy of probiotics in controlling multidrug-resistant E. coli and reducing its ability to form biofilms. Our results substantiate the effective use of probiotics as antimicrobial alternatives and to eradicate biofilms formed by multidrug-resistant E. coli. In this research, surface enhanced Raman spectroscopy (SERS) was utilized to identify and evaluate Escherichia coli biofilms and their response to the varying concentrations of the organometallic compound bis(1,3-dihexylimidazole-2-yl) silver(i) hexafluorophosphate (v). Given the escalating challenge of antibiotic resistance in bacteria that form biofilms, understanding the impact of potential antibiotic agents is crucial for the healthcare sector. The combination of SERS with principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA) enabled the detection and characterization of the biofilm, providing insights into the biochemical changes induced by the antibiotic candidate. The identified SERS spectral features served as indicators for elucidating the mode of action of the potential drug on the biofilm. Through PCA and PLS-DA, metabolic variations allowing the differentiation and classification of unexposed biofilms and biofilms exposed to different concentrations of the synthesized antibiotic were successfully identified, with 95% specificity, 96% sensitivity, and a 0.75 area under the curve (AUC). This research underscores the efficiency of surface enhanced Raman spectroscopy in differentiating the impact of potential antibiotic agents on E. coli biofilms.
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Affiliation(s)
- Tania Tabussam
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Hina Shehnaz
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Muhammad Irfan Majeed
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Haq Nawaz
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Abeer Ahmed Alghamdi
- Department of Physics, College of Science, Princess Nourah bint Abdulrahman University P.O. Box 84428 Riyadh 11671 Saudi Arabia
| | - Muhammad Adnan Iqbal
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Muhammad Shahid
- Department of Biochemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Urwa Shahid
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Rabiea Umer
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | | | - Umer Farooq
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Ahmad Hassan
- Department of Chemistry, University of Agriculture Faisalabad Faisalabad 38000 Pakistan
| | - Muhammad Imran
- Department of Chemistry, Faculty of Science, King Khalid University P.O. Box 9004 Abha 61413 Saudi Arabia
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9
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Sharma A, Rashid M, Chauhan P, Kaur S, Kaur A. In vitro antibacterial and anti-biofilm potential of an endophytic Schizophyllum commune. AMB Express 2024; 14:10. [PMID: 38245627 PMCID: PMC10799838 DOI: 10.1186/s13568-024-01663-x] [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: 06/13/2023] [Accepted: 01/07/2024] [Indexed: 01/22/2024] Open
Abstract
The emergence of antibiotic resistance in pathogens is one of the major health concerns facing mankind as different bacterial strains have developed resistance to antibiotics over the period of time due to overuse and misuse of antibiotics. Besides this, ability to form biofilms is another major factor contributing to antibiotic resistance, which has necessitated the need for exploration for novel and effective compounds with ability to inhibit biofilm formation. Endophytic fungi are reported to exhibit antibacterial and anti-biofilm potential and could serve as a potent source of novel antibacterial compounds. Majority of the bioactivities have been reported from fungi belonging to phylum Ascomycota. Endophytic basidiomycetes, inspite of their profound ability to serve as a source of bioactive compounds have not been exploited extensively. In present study, an attempt was made to assess the antibacterial, anti-biofilm and biofilm dispersion potential of an endophytic basidiomycetous fungus Schizophyllum commune procured from the culture collection of our lab. Ethyl acetate extract of S. commune showed good antibacterial activity against Staphylococcus aureus, Klebsiella pneumoniae, Escherichia coli, Pseudomonas aeruginosa, Salmonella enterica and Vibrio cholerae. Minimum inhibitory concentration and minimum bactericidal concentration of the extract were in the range of 1.25-10 mg/ml against the tested bacterial pathogens. The mode of action was determined to be bactericidal which was further confirmed by time kill studies. Good anti-biofilm activity of S. commune extract was recorded against K. pneumoniae and S. enterica, which was further validated by fluorescence microscopy. The present study highlights the importance of endophytic basidiomycetes as source of therapeutic compounds.
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Affiliation(s)
- Avinash Sharma
- Department of Microbiology, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Muzamil Rashid
- Department of Microbiology, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Pooja Chauhan
- Department of Microbiology, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Sukhraj Kaur
- Department of Microbiology, Guru Nanak Dev University, Amritsar, 143005, Punjab, India
| | - Amarjeet Kaur
- Department of Microbiology, Guru Nanak Dev University, Amritsar, 143005, Punjab, India.
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Allegretti YH, Yamaji R, Adams-Sapper S, Riley LW. Genetic features of antimicrobial drug-susceptible extraintestinal pathogenic Escherichia coli pandemic sequence type 95. Microbiol Spectr 2024; 12:e0418922. [PMID: 38059630 PMCID: PMC10783064 DOI: 10.1128/spectrum.04189-22] [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: 10/16/2022] [Accepted: 11/13/2023] [Indexed: 12/08/2023] Open
Abstract
IMPORTANCE Despite the increasing prevalence of antibiotic-resistant Escherichia coli strains that cause urinary tract and bloodstream infections, a major pandemic lineage of extraintestinal pathogenic E. coli (ExPEC) ST95 has a comparatively low frequency of drug resistance. We compared the genomes of 1,749 ST95 isolates to identify genetic features that may explain why most strains of ST95 resist becoming drug-resistant. Identification of such genomic features could contribute to the development of novel strategies to prevent the spread of antibiotic-resistant genes and devise new measures to control antibiotic-resistant infections.
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Affiliation(s)
| | | | | | - Lee W. Riley
- University of California Berkeley, Berkeley, California, USA
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Ahmed NA, Gulhan T. Determination of antibiotic resistance patterns and genotypes of Escherichia coli isolated from wild birds. MICROBIOME 2024; 12:8. [PMID: 38191447 PMCID: PMC10773086 DOI: 10.1186/s40168-023-01729-1] [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: 08/01/2022] [Accepted: 11/21/2023] [Indexed: 01/10/2024]
Abstract
BACKGROUND Curbing the potential negative impact of antibiotic resistance, one of our era's growing global public health crises, requires regular monitoring of the resistance situations, including the reservoir of resistance genes. Wild birds, a possible bioindicator of antibiotic resistance, have been suggested to play a role in the dissemination of antibiotic-resistant bacteria. Therefore, this study was conducted with the objective of determining the phenotypic and genotypic antibiotic resistance profiles of 100 Escherichia coli isolates of gull and pigeon origin by using the Kirby-Bauer disk diffusion method and PCR. Furthermore, the genetic relationships of the isolates were determined by RAPD-PCR. RESULTS Phenotypic antibiotic susceptibility testing revealed that 63% (63/100) and 29% (29/100) of E. coli isolates were resistant to at least one antibiotic and multidrug-resistant (MDR), respectively. With the exception of cephalothin, to which the E. coli isolates were 100% susceptible, tetracycline (52%), kanamycin (38%), streptomycin (37%), ampicillin (28%), chloramphenicol (21%), trimethoprim/sulfamethoxazole (19%), gentamicin (13%), enrofloxacin (12%) and ciprofloxacin (12%) resistances were detected at varying degrees. Among the investigated resistance genes, tet(B) (66%), tet(A) (63%), aphA1 (48%), sul3 (34%), sul2 (26%), strA/strB (24%) and sul1 (16%) were detected. Regarding the genetic diversity of the isolates, the RAPD-PCR-based dendrograms divided both pigeon and gull isolates into five different clusters based on a 70% similarity threshold. Dendrogram analysis revealed 47-100% similarities among pigeon-origin strains and 40-100% similarities among gull-origin E.coli strains. CONCLUSIONS This study revealed that gulls and pigeons carry MDR E. coli isolates, which may pose a risk to animal and human health by contaminating the environment with their feces. However, a large-scale epidemiological study investigating the genetic relationship of the strains from a "one health" point of view is warranted to determine the possible transmission patterns of antibiotic-resistant bacteria between wild birds, the environment, humans, and other hosts. Video Abstract.
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Affiliation(s)
- Nejash A Ahmed
- Department of Veterinary Microbiology, Faculty of Veterinary Medicine, Ondokuz Mayis University, Samsun, Turkey.
- Daro Lebu District Agriculture Office, Mechara-Micheta, Ethiopia.
| | - Timur Gulhan
- Department of Veterinary Microbiology, Faculty of Veterinary Medicine, Ondokuz Mayis University, Samsun, Turkey
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12
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Ramatla T, Tutubala M, Motlhaping T, de Wet L, Mokgokong P, Thekisoe O, Lekota K. Molecular detection of Shiga toxin and extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli isolates from sheep and goats. Mol Biol Rep 2024; 51:57. [PMID: 38165462 PMCID: PMC10761393 DOI: 10.1007/s11033-023-08987-0] [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: 07/22/2023] [Accepted: 10/26/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND The Shiga toxin (Stx)-producing Escherichia coli (STEC) have become important global public health concerns. This study investigated the prevalence, antimicrobial resistance profile, and extended-spectrum beta-lactamase-producing E. coli in sheep and goat faeces. METHODS AND RESULTS A total of 53 E. coli isolates were confirmed by PCR targeting the uidA [β-D glucuronidase] gene. The Shiga toxin genes stx1 and stx2, as well as bfpA, vir, eaeA, lt and aafII virulence genes, were detected in this study. Of the 53 isolates confirmed to be STEC, 100% were positive for stx2 and 47.2% for stx1. Three isolates possessed a combination of stx1 + stx2 + eaeA, while four isolates harboured stx1 + stx2 + vir virulence genes. The isolates displayed phenotypic antimicrobial resistance against erythromycin (66.04%), colistin sulphate (43.4%), chloramphenicol (9.4%) and ciprofloxacin (1.9%). A total of 28.8% of the strains were phenotypically considered ESBL producers and contained the beta-lactamase blaCTX-M-9 and blaCTX-M-25 gene groups. A larger proportion of the E. coli strains (86.8%) contained the antibiotic sulphonamide resistant (sulII) gene, while 62.3%, 62.3%, 52.8%, 43.4%, 41.5%, 20.8%, 18.9%, 11.3%, 11.3%, 9.4%, 9.4% and 5.7% possessed mcr-4, floR, mcr-1, tet(A), sulI, tet(O), tet(W), parC, mcr-2, ampC 5, qnrS and ermB genes, respectively. Thirteen isolates of the ESBL-producing E. coli were considered multi-drug resistant (MDR). One Shiga toxin (stx2) and two beta-lactamase genes (blaCTX-M-9 and blaCTX-M-25 groups) were present in 16 isolates. In conclusion, the E. coli isolates from the small stock in this study contained a large array of high antibiotic resistance and virulence profiles. CONCLUSIONS Our findings highlight the importance of sheep and goats as sources of virulence genes and MDR E. coli. From a public health and veterinary medicine perspective, the characterization of ESBL producers originating from small livestock (sheep and goats) is crucial due to their close contact with humans.
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Affiliation(s)
- Tsepo Ramatla
- Unit for Environmental Sciences and Management, North West University, Potchefstroom, 2531, South Africa.
| | - Mpho Tutubala
- Unit for Environmental Sciences and Management, North West University, Potchefstroom, 2531, South Africa
| | - Tshepang Motlhaping
- Unit for Environmental Sciences and Management, North West University, Potchefstroom, 2531, South Africa
| | - Lara de Wet
- Unit for Environmental Sciences and Management, North West University, Potchefstroom, 2531, South Africa
| | - Prudent Mokgokong
- Unit for Environmental Sciences and Management, North West University, Potchefstroom, 2531, South Africa
| | - Oriel Thekisoe
- Unit for Environmental Sciences and Management, North West University, Potchefstroom, 2531, South Africa
| | - Kgaugelo Lekota
- Unit for Environmental Sciences and Management, North West University, Potchefstroom, 2531, South Africa
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13
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Cui J, Luo Q, Wei C, Deng X, Liang H, Wei J, Gong Y, Tang Q, Zhang K, Liao X. Electrochemical biosensing for E.coli detection based on triple helix DNA inhibition of CRISPR/Cas12a cleavage activity. Anal Chim Acta 2024; 1285:342028. [PMID: 38057050 DOI: 10.1016/j.aca.2023.342028] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 11/08/2023] [Accepted: 11/11/2023] [Indexed: 12/08/2023]
Abstract
BACKGROUND Escherichia coli (E.coli) is both a commensal and a foodborne pathogenic bacterium in the human gastrointestinal tract, posing significant potential risks to human health and food safety. However, one of the major challenges in E.coli detection lies in the preparation and storage of antibodies. In traditional detection methods, antibodies are indispensable, but their instability often leads to experimental complexity and increased false positives. This underscores the need for new technologies and novel sensors. Therefore, the development of a simple and sensitive method for analyzing E.coli would make significant contributions to human health and food safety. RESULTS We constructed an electrochemical biosensor based on triple-helical DNA and entropy-driven amplification reaction (EDC) to inhibit the cleavage activity of Cas12a, enabling high-specificity detection of E.coli. Replacing antibodies with nucleic acid aptamers (Apt) as recognition elements, we utilized the triple-helical DNA generated by the binding of DNA2 and DNA5/DNA6 double-helical DNA through the entropy-driven amplification reaction to inhibit the collateral cleavage activity of clustered regularly interspaced short palindromic repeats gene editing system (CRISPR) and its associated proteins (Cas). By converting E.coli into electrical signals and recording signal changes in the form of square wave voltammetry (SWV), rapid detection of E.coli was achieved. Optimization of experimental conditions and data detection under the optimal conditions provided high sensitivity, low detection limits, and high specificity. SIGNIFICANCE With a minimal detection limit of 5.02 CFU/mL and a linear range of 1 × 102 - 1 × 107 CFU/mL, the suggested approach was successfully verified to analyze E.coli at various concentrations. Additionally, after examining E.coli samples from pure water and pure milk, the recoveries ranged between 95.76 and 101.20%, demonstrating the method's applicability. Additionally, it provides a feasible research direction for the detection of pathogenic bacteria causing other diseases using the CRISPR/Cas gene editing system.
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Affiliation(s)
- Jiuying Cui
- Guangxi key laboratory of basic and translational research of Bone and joint Degenerative Disease, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China
| | - Qisheng Luo
- Guangxi key laboratory of basic and translational research of Bone and joint Degenerative Disease, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China
| | - Cheng Wei
- Guangxi key laboratory of basic and translational research of Bone and joint Degenerative Disease, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China
| | - Xiandong Deng
- Guangxi key laboratory of basic and translational research of Bone and joint Degenerative Disease, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China
| | - Hongqu Liang
- Guangxi key laboratory of basic and translational research of Bone and joint Degenerative Disease, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China
| | - Jihua Wei
- Guangxi key laboratory of basic and translational research of Bone and joint Degenerative Disease, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China
| | - Yuanxun Gong
- Guangxi key laboratory of basic and translational research of Bone and joint Degenerative Disease, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China
| | - Qianli Tang
- Guangxi key laboratory of basic and translational research of Bone and joint Degenerative Disease, The Affiliated Hospital of Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China.
| | - Kai Zhang
- School of Chemistry and Materials Science, Nanjing University of Information Science and Technology. Nanjing, 210044, P. R. China.
| | - Xianjiu Liao
- School of Pharmacy, Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China.
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McCain J, Martínez SR, Fungo F, Sakaya A, Cosa G. Two-Pronged Dormant Photosensitizer-Antibiotic Bacterial Inactivation: Mechanism, Dosage, and Cellular Evolution Visualized at the Single-Cell Level. J Am Chem Soc 2023; 145:28124-28136. [PMID: 38095965 DOI: 10.1021/jacs.3c10034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Innovative therapeutic approaches are required to battle the rise of antibiotic-resistant bacterial strains. Tapping on reactive oxygen species (ROS) generation in bacteria induced by bactericidal antibiotics, here we report a two-pronged strategy for bacterial inactivation relying on the synergistic combination of a bactericidal antibiotic and newly designed dormant photosensitizers (DoPSs) that activate in the presence of ROS. Intramolecular quenching renders DoPS inert in the presence of light. ROS trapping by DoPS aborts the quenching mechanism unmasking, in equal proportions, singlet oxygen (1O2) sensitization and fluorescence emission. Juxtaposed antioxidant-prooxidant activity built within our DoPS enables (i) initial activation of a few molecules by ROS and (ii) subsequent rapid activation of all DoPS in a bacterium via a domino effect mediated by photogenerated 1O2. Bulk colony forming unit studies employing the minimum inhibitory concentration of the antibiotic illustrate rapid and selective inactivation of Escherichia coli and Pseudomonas aeruginosa only in the presence of light, antibiotic, and DoPS. Single-cell, real-time imaging studies on E. coli reveal an autocatalytic progression of DoPS activation from focal points, providing a unique amplification system for sensing. Single-cell analysis further illustrates the impact of DoPS cellular loading on the rate of DoPS activation and cell death times and on the 1O2 dosing necessary for cell death to occur. Our two-pronged therapy discriminates based on cell metabolites and has the potential to result in lower toxicity, pave the way to reduced drug resistance, and provide insightful mechanistic information about bacterial membrane response to 1O2.
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Affiliation(s)
- Julia McCain
- Department of Chemistry and Quebec Center for Advanced Materials (QCAM), McGill University, Montreal, QC H3A 0B8, Canada
| | - Sol R Martínez
- Department of Chemistry and Quebec Center for Advanced Materials (QCAM), McGill University, Montreal, QC H3A 0B8, Canada
| | - Florencia Fungo
- Department of Chemistry and Quebec Center for Advanced Materials (QCAM), McGill University, Montreal, QC H3A 0B8, Canada
| | - Aya Sakaya
- Department of Chemistry and Quebec Center for Advanced Materials (QCAM), McGill University, Montreal, QC H3A 0B8, Canada
| | - Gonzalo Cosa
- Department of Chemistry and Quebec Center for Advanced Materials (QCAM), McGill University, Montreal, QC H3A 0B8, Canada
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15
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Nikolic N, Anagnostidis V, Tiwari A, Chait R, Gielen F. Droplet-based methodology for investigating bacterial population dynamics in response to phage exposure. Front Microbiol 2023; 14:1260196. [PMID: 38075890 PMCID: PMC10703435 DOI: 10.3389/fmicb.2023.1260196] [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: 07/17/2023] [Accepted: 10/23/2023] [Indexed: 02/12/2024] Open
Abstract
An alarming rise in antimicrobial resistance worldwide has spurred efforts into the search for alternatives to antibiotic treatments. The use of bacteriophages, bacterial viruses harmless to humans, represents a promising approach with potential to treat bacterial infections (phage therapy). Recent advances in microscopy-based single-cell techniques have allowed researchers to develop new quantitative methodologies for assessing the interactions between bacteria and phages, especially the ability of phages to eradicate bacterial pathogen populations and to modulate growth of both commensal and pathogen populations. Here we combine droplet microfluidics with fluorescence time-lapse microscopy to characterize the growth and lysis dynamics of the bacterium Escherichia coli confined in droplets when challenged with phage. We investigated phages that promote lysis of infected E. coli cells, specifically, a phage species with DNA genome, T7 (Escherichia virus T7) and two phage species with RNA genomes, MS2 (Emesvirus zinderi) and Qβ (Qubevirus durum). Our microfluidic trapping device generated and immobilized picoliter-sized droplets, enabling stable imaging of bacterial growth and lysis in a temperature-controlled setup. Temporal information on bacterial population size was recorded for up to 25 h, allowing us to determine growth rates of bacterial populations and helping us uncover the extent and speed of phage infection. In the long-term, the development of novel microfluidic single-cell and population-level approaches will expedite research towards fundamental understanding of the genetic and molecular basis of rapid phage-induced lysis and eco-evolutionary aspects of bacteria-phage dynamics, and ultimately help identify key factors influencing the success of phage therapy.
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Affiliation(s)
- Nela Nikolic
- Living Systems Institute, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
- Department of Physics and Astronomy, Faculty of Environment, Science and Economy, University of Exeter, Exeter, United Kingdom
- Translational Research Exchange @ Exeter, University of Exeter, Exeter, United Kingdom
| | - Vasileios Anagnostidis
- Living Systems Institute, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
- Department of Physics and Astronomy, Faculty of Environment, Science and Economy, University of Exeter, Exeter, United Kingdom
| | - Anuj Tiwari
- Living Systems Institute, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
| | - Remy Chait
- Living Systems Institute, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
- Department of Biosciences, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
| | - Fabrice Gielen
- Living Systems Institute, Faculty of Health and Life Sciences, University of Exeter, Exeter, United Kingdom
- Department of Physics and Astronomy, Faculty of Environment, Science and Economy, University of Exeter, Exeter, United Kingdom
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16
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Das S, Kabir A, Chouhan CS, Shahid MAH, Habib T, Rahman M, Nazir KHMNH. Domestic cats are potential reservoirs of multidrug-resistant human enteropathogenic E. coli strains in Bangladesh. Saudi J Biol Sci 2023; 30:103786. [PMID: 37771370 PMCID: PMC10522898 DOI: 10.1016/j.sjbs.2023.103786] [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] [Received: 07/07/2023] [Revised: 08/11/2023] [Accepted: 08/18/2023] [Indexed: 09/30/2023] Open
Abstract
Companion animals serve as our best friends, confidants, and family members. Thus, disease and antibiotic resistance gene transmission in pets and humans must be sought out. The study aimed to identify the common pathogenic Escherichia coli (E.coli) in pet cats and the antibiotic resistance patterns and resistant gene distribution. Samples (n = 210) were collected from different veterinary clinics in Bangladesh's cities of Mymensingh and Dhaka. Pathogenic E. coli was identified using conventional and molecular approaches. The disc diffusion method assessed the resistance profile against 12 antibiotics, and PCR was used to identify the beta-lactam resistance genes. The prevalence of the stx-1 gene was found to be 2.86%, whereas the rfbO157 prevalence was found to be 1.90% in cats. The stx-1 gene (n = 6) was 100% resistant to erythromycin and imipenem, whereas 100% sensitive to chloramphenicol. In turn, the rfbO157 gene (n = 4) exhibited 100% resistance to erythromycin, imipenem, cefixime, and azithromycin. In addtion, we identified genes that exhibit resistance to beta-lactam antibiotics (100% blaTEM, 40% blaCTX-M, 40% blaSHV2). This study found shiga-toxin producing and extended-spectrum beta-lactamase (ESBL) producing E. coli for the first time in pet cats of Bangladesh. Furthermore, the antimicrobial resistance (AMR) profile of the isolated strains refers to the occurrence of multidrug, which concerns cats and their owners. The existence of these genes in non-diarrheic pet animal isolates indicates that domestic pets may serve as a reservoir for human infection. Thus, one health strategy comprising animal and human health sectors, governments, together with stakeholders is needed to confront multidrug-resistant E. coli infections in Bangladesh.
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Affiliation(s)
- Shanta Das
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Ajran Kabir
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Chandra Shaker Chouhan
- Department of Medicine, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Md. Ahosanul Haque Shahid
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Tasmia Habib
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - Marzia Rahman
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
| | - KHM Nazmul Hussain Nazir
- Department of Microbiology and Hygiene, Faculty of Veterinary Science, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh
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17
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Peng D, Shan J, Fan Z, Huang C, Chen H, Wu X. Mechanistic insights into the cinnamaldehyde modification of lignin for sustainable anti-fungal reagent. Int J Biol Macromol 2023; 249:125994. [PMID: 37506788 DOI: 10.1016/j.ijbiomac.2023.125994] [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: 03/31/2023] [Revised: 06/26/2023] [Accepted: 07/24/2023] [Indexed: 07/30/2023]
Abstract
The limited anti-fungal activity of enzymatic hydrolysis lignin (EHL) has been a challenge in its direct application as a bamboo preservative. To address this issue, the cinnamaldehyde modification of EHL was carried out to introduce anti-fungal structures into the lignin matrix, effectively enhancing its anti-fungal activity. The results demonstrated that the minimal inhibitory concentrations of the modified lignin (EHL-DC) against Aspergillus niger significantly improved from 16 mg/mL to 1 mg/mL, with comparable enhancements in anti-fungal activity against other fungi. As a result of the modification, the EHL-DC is more prone to interact with fungal cell membranes, contributing to a roughened, shrunken hyphal surface and a decrease in mycelial biomass. Multiple characterization methods were employed to better grapple with the EHL-DC chemical changes. The nitrogen content increased from 2.3 % to 8.3 %, and alterations in elemental compositions further support the proposed reaction mechanism and its role in enhancing EHL's anti-fungal activity. This study offers novel insights into the high-value utilization of enzymatic hydrolysis lignin based on green chemistry principles.
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Affiliation(s)
- Dandan Peng
- School of Chemical and Materials Engineering, National Engineering & Technology Research Center of Wood-Based Resources Comprehensive Utilization, Zhejiang A & F University, Hangzhou 311300, People's Republic of China
| | - Jingqun Shan
- School of Finance, Zhejiang University of Finance and Economics, Hangzhou 310018, People's Republic of China
| | - Zhiwei Fan
- School of Chemical and Materials Engineering, National Engineering & Technology Research Center of Wood-Based Resources Comprehensive Utilization, Zhejiang A & F University, Hangzhou 311300, People's Republic of China
| | - Caoxing Huang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, People's Republic of China
| | - Haili Chen
- School of Chemical and Materials Engineering, National Engineering & Technology Research Center of Wood-Based Resources Comprehensive Utilization, Zhejiang A & F University, Hangzhou 311300, People's Republic of China.
| | - Xinxing Wu
- School of Chemical and Materials Engineering, National Engineering & Technology Research Center of Wood-Based Resources Comprehensive Utilization, Zhejiang A & F University, Hangzhou 311300, People's Republic of China; Microbes and Insects Control Institute of Bio-based Materials, Zhejiang A&F University, Hangzhou 311300, People's Republic of China.
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18
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Ramatla T, Mafokwane T, Lekota K, Monyama M, Khasapane G, Serage N, Nkhebenyane J, Bezuidenhout C, Thekisoe O. "One Health" perspective on prevalence of co-existing extended-spectrum β-lactamase (ESBL)-producing Escherichia coli and Klebsiella pneumoniae: a comprehensive systematic review and meta-analysis. Ann Clin Microbiol Antimicrob 2023; 22:88. [PMID: 37740207 PMCID: PMC10517531 DOI: 10.1186/s12941-023-00638-3] [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: 07/19/2023] [Accepted: 09/12/2023] [Indexed: 09/24/2023] Open
Abstract
BACKGROUND The Escherichia coli (E. coli) and Klebsiella pneumoniae (K. pneumoniae) bacterial isolates that produce extended-spectrum β-lactamases (ESBLs) contribute to global life-threatening infections. This study conducted a systematic review and meta-analysis on the global prevalence of ESBLs in co-existing E. coli and K. pneumoniae isolated from humans, animals and the environment. METHODS The systematic review protocol was registered in the International Prospective Register of Systematic Reviews (PROSPERO) [ID no: CRD42023394360]. This study was carried out following the preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines. One hundred and twenty-six eligible studies published on co-existing antibiotic resistance in E. coli and K. pneumoniae between 1990 and 2022 were included. RESULTS The pooled prevalence of ESBL-producing E. coli and K. pneumoniae was 33.0% and 32.7% for humans, 33.5% and 19.4% for animals, 56.9% and 24.2% for environment, 26.8% and 6.7% for animals/environment, respectively. Furthermore, the three types of resistance genes that encode ESBLs, namely blaSHVblaCTX-M,blaOXA, and blaTEM, were all detected in humans, animals and the environment. CONCLUSIONS The concept of "One-Health" surveillance is critical to tracking the source of antimicrobial resistance and preventing its spread. The emerging state and national surveillance systems should include bacteria containing ESBLs. A well-planned, -implemented, and -researched alternative treatment for antimicrobial drug resistance needs to be formulated.
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Affiliation(s)
- Tsepo Ramatla
- Unit for Environmental Sciences and Management, North-West University, Potchefstroom, 2520, South Africa.
| | - Tshepo Mafokwane
- Department of Life and Consumer Sciences, University of South Africa, Florida, 1710, South Africa
| | - Kgaugelo Lekota
- Unit for Environmental Sciences and Management, North-West University, Potchefstroom, 2520, South Africa
| | - Maropeng Monyama
- Department of Life and Consumer Sciences, University of South Africa, Florida, 1710, South Africa
| | - George Khasapane
- Department of Life Sciences, Central University of Technology, Bloemfontein, 9300, South Africa
| | - Naledi Serage
- Unit for Environmental Sciences and Management, North-West University, Potchefstroom, 2520, South Africa
| | - Jane Nkhebenyane
- Department of Life Sciences, Central University of Technology, Bloemfontein, 9300, South Africa
| | - Carlos Bezuidenhout
- Unit for Environmental Sciences and Management, North-West University, Potchefstroom, 2520, South Africa
| | - Oriel Thekisoe
- Unit for Environmental Sciences and Management, North-West University, Potchefstroom, 2520, South Africa
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19
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Pan Z, Guo J, Zhong Y, Fan L, Su Y. Gentamicin resistance to Escherichia coli related to fatty acid metabolism based on transcriptome analysis. Can J Microbiol 2023; 69:328-338. [PMID: 37224563 DOI: 10.1139/cjm-2023-0036] [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: 05/26/2023]
Abstract
Antibiotic overuse and misuse have promoted the emergence and spread of antibiotic-resistant bacteria. Increasing bacterial resistance to antibiotics is a major healthcare problem, necessitating elucidation of antibiotic resistance mechanisms. In this study, we explored the mechanism of gentamicin resistance by comparing the transcriptomes of antibiotic-sensitive and -resistant Escherichia coli. A total of 410 differentially expressed genes were identified, of which 233 (56.83%) were up-regulated and 177 (43.17%) were down-regulated in the resistant strain compared with the sensitive strain. Gene Ontology (GO) analysis classifies differential gene expression into three main categories: biological processes, cellular components, and molecular functions. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis indicated that the up-regulated genes were enriched in eight metabolic pathways, including fatty acid metabolism, which suggests that fatty acid metabolism may be involved in the development of gentamicin resistance in E. coli. This was demonstrated by measuring the acetyl-CoA carboxylase activity, plays a fundamental role in fatty acid metabolism, was increased in gentamicin-resistant E. coli. Treatment of fatty acid synthesis inhibitor, triclosan, promoted gentamicin-mediated killing efficacy to antibiotic-resistant bacteria. We also found that exogenous addition of oleic acid, which involved in fatty acid metabolism, reduced E. coli sensitivity to gentamicin. Overall, our results provide insight into the molecular mechanism of gentamicin resistance development in E. coli.
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Affiliation(s)
- Zhiyu Pan
- Department of Cell Biology & Institute of Biomedicine, National Engineering Research Center of Genetic Medicine, MOE Key Laboratory of Tumor Molecular Biology, Guangdong Provincial Key Laboratory of Bioengineering Medicine, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Juan Guo
- Department of Cell Biology & Institute of Biomedicine, National Engineering Research Center of Genetic Medicine, MOE Key Laboratory of Tumor Molecular Biology, Guangdong Provincial Key Laboratory of Bioengineering Medicine, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Yilin Zhong
- Department of Cell Biology & Institute of Biomedicine, National Engineering Research Center of Genetic Medicine, MOE Key Laboratory of Tumor Molecular Biology, Guangdong Provincial Key Laboratory of Bioengineering Medicine, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Lvyuan Fan
- Department of Cell Biology & Institute of Biomedicine, National Engineering Research Center of Genetic Medicine, MOE Key Laboratory of Tumor Molecular Biology, Guangdong Provincial Key Laboratory of Bioengineering Medicine, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
| | - Yubin Su
- Department of Cell Biology & Institute of Biomedicine, National Engineering Research Center of Genetic Medicine, MOE Key Laboratory of Tumor Molecular Biology, Guangdong Provincial Key Laboratory of Bioengineering Medicine, College of Life Science and Technology, Jinan University, Guangzhou, 510632, China
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20
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Tariq A, Salman M, Mustafa G, Tawab A, Naheed S, Naz H, Shahid M, Ali H. Agonistic antibacterial potential of Loigolactobacillus coryniformis BCH-4 metabolites against selected human pathogenic bacteria: An in vitro and in silico approach. PLoS One 2023; 18:e0289723. [PMID: 37561679 PMCID: PMC10414564 DOI: 10.1371/journal.pone.0289723] [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: 04/11/2023] [Accepted: 07/25/2023] [Indexed: 08/12/2023] Open
Abstract
Lactic acid bacteria are known to produce numerous antibacterial metabolites that are active against various pathogenic microbes. In this study, bioactive metabolites from the cell free supernatant of Loigolactobacillus coryniformis BCH-4 were obtained by liquid-liquid extraction, using ethyl acetate, followed by fractionation, using silica gel column chromatography. The collected F23 fraction effectively inhibited the growth of pathogenic bacteria (Escherichia coli, Bacillus cereus, and Staphylococcus aureus) by observing the minimum inhibitory concentration (MIC) and minimum bactericidal concentrations (MBC). The evaluated values of MIC were 15.6 ± 0.34, 3.9 ± 0.59, and 31.2 ± 0.67 μg/mL and MBC were 15.6 ± 0.98, 7.8 ± 0.45, and 62.5 ± 0.23 μg/mL respectively, against the above-mentioned pathogenic bacteria. The concentration of F23 fraction was varying from 1000 to 1.9 μg/mL. Furthermore, the fraction also exhibited sustainable biofilm inhibition. Using the Electrospray Ionization Mass Spectrometry (ESI-MS/MS), the metabolites present in the bioactive fraction (F23), were identified as phthalic acid, myristic acid, mangiferin, 16-hydroxylpalmatic acid, apigenin, and oleandomycin. By using in silico approach, docking analysis showed good interaction of identified metabolites and receptor proteins of pathogenic bacteria. The present study suggested Loigolactobacillus coryniformis BCH-4, as a promising source of natural bioactive metabolites which may receive great benefit as potential sources of drugs in the pharmacological sector.
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Affiliation(s)
- Anam Tariq
- Department of Biochemistry, Government College University Faisalabad (GCUF), Faisalabad, Pakistan
| | - Mahwish Salman
- Department of Biochemistry, Government College University Faisalabad (GCUF), Faisalabad, Pakistan
| | - Ghulam Mustafa
- Department of Biochemistry, Government College University Faisalabad (GCUF), Faisalabad, Pakistan
| | - Abdul Tawab
- National Institute for Biotechnology and Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Shazia Naheed
- Department of Applied Chemistry, Government College University Faisalabad (GCUF), Faisalabad, Pakistan
| | - Hafsa Naz
- Department of Biochemistry, Government College University Faisalabad (GCUF), Faisalabad, Pakistan
| | - Misbah Shahid
- Department of Biochemistry, Government College University Faisalabad (GCUF), Faisalabad, Pakistan
| | - Hazrat Ali
- Industrial Biotechnology Division, National Institute for Biotechnology and Genetic Engineering College, Pakistan Institute of Engineering and Applied Sciences (NIBGE-C,PIEAS), Faisalabad, Pakistan
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21
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Kasanga M, Kwenda G, Wu J, Kasanga M, Mwikisa MJ, Chanda R, Mupila Z, Yankonde B, Sikazwe M, Mwila E, Shempela DM, Solochi BB, Phiri C, Mudenda S, Chanda D. Antimicrobial Resistance Patterns and Risk Factors Associated with ESBL-Producing and MDR Escherichia coli in Hospital and Environmental Settings in Lusaka, Zambia: Implications for One Health, Antimicrobial Stewardship and Surveillance Systems. Microorganisms 2023; 11:1951. [PMID: 37630511 PMCID: PMC10459584 DOI: 10.3390/microorganisms11081951] [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: 06/29/2023] [Revised: 07/21/2023] [Accepted: 07/26/2023] [Indexed: 08/27/2023] Open
Abstract
Antimicrobial resistance (AMR) is a public health problem threatening human, animal, and environmental safety. This study assessed the AMR profiles and risk factors associated with Escherichia coli in hospital and environmental settings in Lusaka, Zambia. This cross-sectional study was conducted from April 2022 to August 2022 using 980 samples collected from clinical and environmental settings. Antimicrobial susceptibility testing was conducted using BD PhoenixTM 100. The data were analysed using SPSS version 26.0. Of the 980 samples, 51% were from environmental sources. Overall, 64.5% of the samples tested positive for E. coli, of which 52.5% were from clinical sources. Additionally, 31.8% were ESBL, of which 70.1% were clinical isolates. Of the 632 isolates, 48.3% were MDR. Most clinical isolates were resistant to ampicillin (83.4%), sulfamethoxazole/trimethoprim (73.8%), and ciprofloxacin (65.7%) while all environmental isolates were resistant to sulfamethoxazole/trimethoprim (100%) and some were resistant to levofloxacin (30.6%). The drivers of MDR in the tested isolates included pus (AOR = 4.6, CI: 1.9-11.3), male sex (AOR = 2.1, CI: 1.2-3.9), and water (AOR = 2.6, CI: 1.2-5.8). This study found that E. coli isolates were resistant to common antibiotics used in humans. The presence of MDR isolates is a public health concern and calls for vigorous infection prevention measures and surveillance to reduce AMR and its burdens.
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Affiliation(s)
- Maisa Kasanga
- Department of Epidemiology and Biostatistics, School of Public Health, Zhengzhou University, Zhengzhou 450001, China (J.W.)
| | - Geoffrey Kwenda
- Department of Biomedical Sciences, School of Health Sciences, University of Zambia, Lusaka 10101, Zambia;
| | - Jian Wu
- Department of Epidemiology and Biostatistics, School of Public Health, Zhengzhou University, Zhengzhou 450001, China (J.W.)
| | - Maika Kasanga
- Department of Pharmacy, University Teaching Hospital, Lusaka 50110, Zambia;
| | - Mark J. Mwikisa
- Department of Pathology and Microbiology, University Teaching Hospital, Lusaka 50110, Zambia (B.B.S.)
| | - Raphael Chanda
- Adult Centre of Excellence, University Teaching Hospital, Lusaka 50110, Zambia
| | - Zachariah Mupila
- Department of Pathology and Microbiology, University Teaching Hospital, Lusaka 50110, Zambia (B.B.S.)
| | - Baron Yankonde
- Department of Pathology and Microbiology, University Teaching Hospital, Lusaka 50110, Zambia (B.B.S.)
| | - Mutemwa Sikazwe
- Department of Pathology, Lusaka Trust Hospital, Lusaka 35852, Zambia
| | - Enock Mwila
- Department of Pathology, Lusaka Trust Hospital, Lusaka 35852, Zambia
| | - Doreen M. Shempela
- Churches Health Association of Zambia, Lusaka 34511, Zambia
- Department of Laboratory and Research, Central University of Nicaragua, Managua 12104, Nicaragua
| | - Benjamin B. Solochi
- Department of Pathology and Microbiology, University Teaching Hospital, Lusaka 50110, Zambia (B.B.S.)
| | - Christabel Phiri
- Department of Microbiology, School of Public Health, University of Zambia, Lusaka 10101, Zambia
| | - Steward Mudenda
- Department of Pharmacy, School of Health Sciences, University of Zambia, Lusaka 10101, Zambia
- Research and Surveillance Technical Working Group, Zambia National Public Health Institute, Lusaka 10101, Zambia
| | - Duncan Chanda
- Adult Centre of Excellence, University Teaching Hospital, Lusaka 50110, Zambia
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22
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Éliás AJ, Barna V, Patoni C, Demeter D, Veres DS, Bunduc S, Erőss B, Hegyi P, Földvári-Nagy L, Lenti K. Probiotic supplementation during antibiotic treatment is unjustified in maintaining the gut microbiome diversity: a systematic review and meta-analysis. BMC Med 2023; 21:262. [PMID: 37468916 DOI: 10.1186/s12916-023-02961-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 06/26/2023] [Indexed: 07/21/2023] Open
Abstract
BACKGROUND Probiotics are often used to prevent antibiotic-induced low-diversity dysbiosis, however their effect is not yet sufficiently summarized in this regard. We aimed to investigate the effects of concurrent probiotic supplementation on gut microbiome composition during antibiotic therapy. METHODS We performed a systematic review and meta-analysis of randomized controlled trials reporting the differences in gut microbiome diversity between patients on antibiotic therapy with and without concomitant probiotic supplementation. The systematic search was performed in three databases (MEDLINE (via PubMed), Embase, and Cochrane Central Register of Controlled Trials (CENTRAL)) without filters on 15 October 2021. A random-effects model was used to estimate pooled mean differences (MD) with 95% confidence intervals (CI). This review was registered on PROSPERO (CRD42021282983). RESULTS Of 11,769 identified articles, 15 were eligible in the systematic review and 5 in the meta-analyses. Quantitative data synthesis for Shannon (MD = 0.23, 95% CI: [(-)0.06-0.51]), Chao1 (MD = 11.59 [(-)18.42-41.60]) and observed OTUs (operational taxonomic unit) (MD = 17.15 [(-)9.43-43.73]) diversity indices revealed no significant difference between probiotic supplemented and control groups. Lacking data prevented meta-analyzing other diversity indices; however, most of the included studies reported no difference in the other reported α- and ß-diversity indices between the groups. Changes in the taxonomic composition varied across the eligible studies but tended to be similar in both groups. However, they showed a potential tendency to restore baseline levels in both groups after 3-8 weeks. This is the first meta-analysis and the most comprehensive review of the topic to date using high quality methods. The limited number of studies and low sample sizes are the main limitations of our study. Moreover, there was high variability across the studies regarding the indication of antibiotic therapy and the type, dose, and duration of antimicrobials and probiotics. CONCLUSIONS Our results showed that probiotic supplementation during antibiotic therapy was not found to be influential on gut microbiome diversity indices. Defining appropriate microbiome diversity indices, their standard ranges, and their clinical relevance would be crucial.
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Affiliation(s)
- Anna Júlia Éliás
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
- Doctoral School of Health Sciences, Semmelweis University, Budapest, Hungary
| | - Viktória Barna
- Faculty of Health Sciences, Semmelweis University, Budapest, Hungary
| | - Cristina Patoni
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
- Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Dóra Demeter
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
- Military Hospital Medical Centre, Hungarian Defense Forces, Budapest, Hungary
| | - Dániel Sándor Veres
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Stefania Bunduc
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
- Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
- Fundeni Clinical Institute, Bucharest, Romania
| | - Bálint Erőss
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
- Institute of Pancreatic Diseases, Semmelweis University, Budapest, Hungary
- Institute for Translational Medicine, Medical School, University of Pécs, Pécs, Hungary
| | - Péter Hegyi
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
- Institute of Pancreatic Diseases, Semmelweis University, Budapest, Hungary
- Institute for Translational Medicine, Medical School, University of Pécs, Pécs, Hungary
| | - László Földvári-Nagy
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary.
- Department of Morphology and Physiology, Faculty of Health Sciences, Semmelweis University, Budapest, Hungary.
| | - Katalin Lenti
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
- Department of Morphology and Physiology, Faculty of Health Sciences, Semmelweis University, Budapest, Hungary
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23
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L A LA, Waturangi DE. Application of BI-EHEC and BI-EPEC bacteriophages to control enterohemorrhagic and enteropathogenic escherichia coli on various food surfaces. BMC Res Notes 2023; 16:102. [PMID: 37312167 DOI: 10.1186/s13104-023-06371-6] [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: 08/31/2022] [Accepted: 05/25/2023] [Indexed: 06/15/2023] Open
Abstract
OBJECTIVES The purposes of this study were to determine the Efficiency of Plating (EOP) value of Bacteriophage BI-EHEC and BI-EPEC and to evaluate the application of these bacteriophages in reducing population of EHEC and EPEC on various food samples. RESULTS In this study, we used bacteriophage BI-EHEC and BI-EPEC, which were isolated from previous study. Both phages were tested with other multiple pathotypes of intestinal pathogenic E. coli to determine the efficiency of plating. BI-EHEC had high efficiency toward ETEC with an EOP value of 2.95 but low efficiency toward EHEC with an EOP value of 0.10, while BI-EPEC had high efficiency toward EHEC and ETEC with EOP values of 1.10 and 1.21, respectively. As biocontrol agents, both bacteriophages able to reduce CFU of EHEC and EPEC in several food samples using 1 and 6-days incubation times at 4 [Formula: see text]. BI-EHEC reduced the number of EHEC with an overall percentage of bacterial reduction value above 0.13 log10, while BI-EPEC reduced number of EPEC with reduction value above 0.33 log10.
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Affiliation(s)
- Leny Agustina L A
- Faculty of Biotechnology, Atma Jaya Catholic University of Indonesia, Jalan Jenderal Sudirman 51 Jakarta, 12930, South Jakarta, Indonesia
| | - Diana Elizabeth Waturangi
- Faculty of Biotechnology, Atma Jaya Catholic University of Indonesia, Jalan Jenderal Sudirman 51 Jakarta, 12930, South Jakarta, Indonesia.
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24
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Joddha HB, Mathakiya RA, Joshi KV, Khant RB, Golaviya AV, Hinsu AT, Desai MR, Jakhesara SJ, Koringa PG. Profiling of Antimicrobial Resistance Genes and Integron from Escherichia coli Isolates Using Whole Genome Sequencing. Genes (Basel) 2023; 14:1212. [PMID: 37372392 DOI: 10.3390/genes14061212] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 05/23/2023] [Accepted: 05/24/2023] [Indexed: 06/29/2023] Open
Abstract
This study is designed to investigate Escherichia coli for the antibiotic resistance genes (ARGs) and integrons from healthy as well as diarrhoeic/diseased animals/birds' faecal samples. A total of eight samples were selected for the study; from each animal, two samples were taken, one from healthy animals/birds and one from diarrhoeic/diseased animals/birds. Antibiotic sensitivity testing (AST) and whole genome sequencing (WGS) was performed for selected isolates. The E. coli isolates showed resistance to moxifloxacin, followed by erythromycin, ciprofloxacin, pefloxacin, tetracycline, levofloxacin, ampicillin, amoxicillin, and sulfadiazine (4/8, 50.00% each). The E. coli isolates were 100% sensitive to amikacin, followed by chloramphenicol, cefixime, cefoperazone, and cephalothin. A total of 47 ARGs from 12 different antibiotic classes were detected among the eight isolates by WGS. The different classes of antibiotics included aminoglycoside, sulphonamide, tetracycline, trimethoprim, quinolone, fosfomycin, phenicol, macrolide, colistin, fosmidomycin, and multidrug efflux. The class 1 integrons were detected in 6/8 (75.00%) isolates with 14 different gene cassettes.
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Affiliation(s)
- Harshrajsinh B Joddha
- Department of Veterinary Microbiology, College of Veterinary Science and A H, Kamdhenu University, Anand 388001, Gujarat, India
| | - Rafiyuddin A Mathakiya
- Department of Veterinary Microbiology, College of Veterinary Science and A H, Kamdhenu University, Anand 388001, Gujarat, India
| | - Kuldip V Joshi
- Department of Veterinary Microbiology, College of Veterinary Science and A H, Kamdhenu University, Anand 388001, Gujarat, India
| | - Ravindra B Khant
- Department of Veterinary Microbiology, College of Veterinary Science and A H, Kamdhenu University, Anand 388001, Gujarat, India
| | - Akash V Golaviya
- Department of Veterinary Microbiology, College of Veterinary Science and A H, Kamdhenu University, Anand 388001, Gujarat, India
| | - Ankit T Hinsu
- Department of Animal Biotechnology, College of Veterinary Science and A H, Kamdhenu University, Anand 388001, Gujarat, India
| | - Mansi R Desai
- Department of Animal Biotechnology, College of Veterinary Science and A H, Kamdhenu University, Anand 388001, Gujarat, India
| | - Subhash J Jakhesara
- Department of Animal Biotechnology, College of Veterinary Science and A H, Kamdhenu University, Anand 388001, Gujarat, India
| | - Prakash G Koringa
- Department of Animal Biotechnology, College of Veterinary Science and A H, Kamdhenu University, Anand 388001, Gujarat, India
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25
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Han Y, Liao C, Meng X, Zhao Q, Yan X, Tian L, Liu Y, Li N, Wang X. Switchover of electrotrophic and heterotrophic respirations enables the biomonitoring of low concentration of BOD in oxygen-rich environment. WATER RESEARCH 2023; 235:119897. [PMID: 36963309 DOI: 10.1016/j.watres.2023.119897] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 03/16/2023] [Accepted: 03/18/2023] [Indexed: 06/18/2023]
Abstract
Biochemical oxygen demand (BOD) is a key indicator of water quality. However, there is still no technique to directly measure BOD at low concentrations in oxygen-rich environments. Here, we propose a new scheme using facultative electrotrophs as the sensing element, and confirmed aerobic Acinetobacter venetianus RAG-1 immobilized on electrode was able to measure BOD via the switchover between electrotrophic and heterotrophic respirations. The hybrid binder of Nafion and polytetrafluoroethylene (PTFE) maximized the baseline current (127 ± 2 A/m2) and sensitivity (2.5 ± 0.1 (mA/m2)/(mg/L)). The current decrease and the BOD5 concentration fitted well with a linear model in the case of known contaminants, verified with both lab samples of acetate and glucose (R2>0.96) and in standard curves of real environmental samples collected from the lake and the effluent of wastewater treatment plant (R2>0.98). Importantly, the biosensor tested actual contaminated water samples with an error of 0.4∼10% compared to BOD5 in the case of unknown contaminants. Transcriptomics revealed that reverse oxidative TCA may involve in the electrotrophic respiration of RAG-1 since citrate synthase (gltA) was highly expressed, which was partly downregulated when heterotrophic metabolism was triggered by BOD. This can be returned to electrotroph when BOD was depleted. Our results showed a new way to rapidly measure BOD in oxygen-rich environment, demonstrating the possibility to employ bacteria with two competitive respiration pathways for pollution detection.
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Affiliation(s)
- Yilian Han
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China
| | - Chengmei Liao
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China.
| | - Xinyi Meng
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China
| | - Qian Zhao
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China
| | - Xuejun Yan
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China
| | - Lili Tian
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China
| | - Ying Liu
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China
| | - Nan Li
- School of Environmental Science and Engineering, Tianjin University, No. 35 Yaguan Road, Jinnan District, Tianjin 300350, China
| | - Xin Wang
- MOE Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, No. 38 Tongyan Road, Jinnan District, Tianjin 300350, China.
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26
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Ganipisetti VM, Dudiki N, Athavale A. A Diagnostic Quandary of Escherichia Coli Pneumonia: A Case Report and Literature Review. Cureus 2023; 15:e39668. [PMID: 37265881 PMCID: PMC10231897 DOI: 10.7759/cureus.39668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/29/2023] [Indexed: 06/03/2023] Open
Abstract
Escherichia coli community-acquired pneumonia (CAP) is an under-recognized condition associated with higher mortality compared to the other well-studied causes of pneumonia. E. coli pneumonia is frequently associated with bacteremia. Despite the absence of abdominal or urinary symptoms, the infection may originate from an occult gastrointestinal (GI) source since it is a common commensal bacteria of the GI tract. Conditions related to extraintestinal pathogenic E. coli (ExPEC) are gaining attention, and there has been a trend toward the rise of pneumonia secondary to gram-negative bacteria. This presents a diagnostic stewardship dilemma in a patient with sepsis, E. coli bacteremia, and apparent pneumonia - to assume and treat for E. coli CAP or to look for a GI/genitourinary source which may, in turn, lead to incidental findings and further studies. We report a case of E. coli CAP in a 62-year-old patient and our approach regarding the treatment and imaging course.
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Affiliation(s)
| | - Natasha Dudiki
- Pulmonary and Critical Care, Indiana University Health Ball Memorial Hospital, Muncie, USA
| | - Anand Athavale
- Hospital Medicine, Presbyterian Hospital, Albuquerque, USA
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27
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Tian Z, Wu G, Libby M, Wu K, Jeong KJ, Kim YJ. Synthesis of biologically derived poly(pyrogallol) nanofibers for antibacterial applications. J Mater Chem B 2023; 11:3356-3363. [PMID: 36987970 PMCID: PMC10387265 DOI: 10.1039/d3tb00312d] [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] [Indexed: 03/18/2023]
Abstract
Herein, we present the facile synthesis of poly(pyrogallol) biopolymers and their application as antibacterial agents. Pyrogallol is a class of phenolic compounds that can be found in various plants. Polymerization was performed by the auto-oxidation of pyrogallol under a hydrated condition. The microscopic image of poly(pyrogallol) shows a highly homogenous nanofibrous structure with a diameter of 100.3 ± 16.3 nm. Spectroscopic analysis by FT-IR spectroscopy, Raman spectroscopy, and XPS corroborated the formation of ether (C-O-C) bonds between the hydroxyl group and adjacent carbons of pyrogallol during polymerization. The FT-IR and XPS spectra also revealed redox-active gallol functional groups on poly(pyrogallol) nanofibers, which can be used to release free electrons and protons during oxidation followed by the generation of reactive oxygen species (ROS). The generated ROS from poly(pyrogallol) was used to inhibit the growth of bacteria, Escherichia coli, at a inhibition rates of 56.3 ± 9.7% and 95.5 ± 2.0% within 0.5 and 2 h, respectively. This finding suggests that poly(pyrogallol) can be used as a naturally occurring antibacterial agent for various biomedical and environmental applications.
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Affiliation(s)
- Zhen Tian
- Department of Chemical Engineering, University of New Hampshire, Durham, NH 03824, USA.
| | - Guo Wu
- Department of Chemical Engineering, University of New Hampshire, Durham, NH 03824, USA.
| | - Matt Libby
- Department of Chemical Engineering, University of New Hampshire, Durham, NH 03824, USA.
| | - Kang Wu
- Department of Chemical Engineering, University of New Hampshire, Durham, NH 03824, USA.
| | - Kyung Jae Jeong
- Department of Chemical Engineering, University of New Hampshire, Durham, NH 03824, USA.
| | - Young Jo Kim
- Department of Chemical Engineering, University of New Hampshire, Durham, NH 03824, USA.
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28
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Zhou Y, Li Z, Huang J, Wu Y, Mao X, Tan Y, Liu H, Ma D, Li X, Wang X. Development of a phage-based electrochemical biosensor for detection of Escherichia coli O157: H7 GXEC-N07. Bioelectrochemistry 2023; 150:108345. [PMID: 36495704 DOI: 10.1016/j.bioelechem.2022.108345] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 11/29/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022]
Abstract
Escherichia coli (E. coli) O157:H7 is one of the most important foodborne pathogens that causing severe foodborne diseases. With the development of foodborne diseases, there is an urgent need to seek new methods for early detection and monitoring of E. coli O157:H7. In this study, an electrochemical biosensor using phage EP01 as the recognition agent for detection of E. coli O157:H7 GXEC-N07 was established due to the specificity and high efficiency of phage EP01 in recognizing GXEC-N07. The biosensor was developed by depositing phages conjugated carboxyl graphene oxide (CFGO) and conductive carbon black (CB) onto the surface of glass carbon electrodes (GCEs). When detecting GXEC-N07 in the concentration range of 102 ∼ 107 CFU/mL, the biosensor showed good linearity with a low detection limit of 11.8 CFU/mL, and the whole progress was in less than 30 min. The biosensor was successfully applied to the quantitative detection of GXEC-N07 in fresh milk and raw pork. The recovery values ranged from 60.8 % to 114.2 %. The biosensor provides a rapid, specific, low cost, and label free tool for E. coli O157:H7 GXEC-N07 detection. It is expected to become a powerful method for the detection of bacteria that threatening food safety and public health security.
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Affiliation(s)
- Yuqing Zhou
- College of Animal Science and Technology, Guangxi University, Nanning 530004, Guangxi, China
| | - Ziyong Li
- College of Animal Science and Technology, Guangxi University, Nanning 530004, Guangxi, China
| | - Jijie Huang
- College of Animal Science and Technology, Guangxi University, Nanning 530004, Guangxi, China
| | - Yuxing Wu
- College of Animal Science and Technology, Guangxi University, Nanning 530004, Guangxi, China
| | - Xinyu Mao
- College of Animal Science and Technology, Guangxi University, Nanning 530004, Guangxi, China
| | - Yizhou Tan
- College of Animal Science and Technology, Guangxi University, Nanning 530004, Guangxi, China
| | - Hui Liu
- College of Animal Science and Technology, Guangxi University, Nanning 530004, Guangxi, China
| | - Dongxin Ma
- College of Animal Science and Technology, Guangxi University, Nanning 530004, Guangxi, China
| | - Xun Li
- College of Animal Science and Technology, Guangxi University, Nanning 530004, Guangxi, China; Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China; Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530004, China; Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, Nanning 530004, China.
| | - Xiaoye Wang
- College of Animal Science and Technology, Guangxi University, Nanning 530004, Guangxi, China; Guangxi Zhuang Autonomous Region Engineering Research Center of Veterinary Biologics, Nanning 530004, China; Guangxi Key Laboratory of Animal Reproduction, Breeding and Disease Control, Nanning 530004, China; Guangxi Colleges and Universities Key Laboratory of Prevention and Control for Animal Disease, Nanning 530004, China.
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Mączyńska B, Frej-Mądrzak M, Sarowska J, Woronowicz K, Choroszy-Król I, Jama-Kmiecik A. Evolution of Antibiotic Resistance in Escherichia coli and Klebsiella pneumoniae Clinical Isolates in a Multi-Profile Hospital over 5 Years (2017-2021). J Clin Med 2023; 12:jcm12062414. [PMID: 36983414 PMCID: PMC10058544 DOI: 10.3390/jcm12062414] [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: 02/08/2023] [Revised: 03/10/2023] [Accepted: 03/19/2023] [Indexed: 03/30/2023] Open
Abstract
In recent years, we have witnessed a growing drug resistance among bacteria, which is associated with the use and availability of an increasing number of broad-spectrum antimicrobial agents, as well as with their irrational and excessive use. The present study aims to analyze changes in the drug resistance of Gram-negative Enterobacterales: Escherichia coli and Klebsiella pneumoniae, isolated from infections in a multi-profile hospital over five years (from 2017 to 2021). Among the practical outcomes of the evaluation of these data will be the possibility of determining changes in susceptibility to the antibiotics used in the hospital. In turn, this will help propose new therapeutic options, especially for empirical therapy that is necessary in severe infections. The analysis of the use of individual groups of antibiotics allowed for identification of the causes of the increasing resistance of Gram-negative bacilli. The highest number of infections whose etiological agent was K. pneumoniae ESBL(+) and E. coli ESBL(+) was observed in 2018. In the analyzed five-year period, the number of multi-resistant (MDR) K. pneumoniae strains increased successively, which seems to be related to the growing use, especially in the pandemic period, of broad-spectrum antibiotics, mainly penicillins with inhibitors, third-generation cephalosporins, and carbapenems.
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Affiliation(s)
- Beata Mączyńska
- Department of Pharmaceutical Microbiology and Parasitology, Faculty of Pharmacy, Medical University, 50-367 Wroclaw, Poland
- Department of Hygiene and Epidemiology, Lower Silesian T. Marciniak Specialist Hospital-Center for Emergency Medicine, 54-049 Wrocław, Poland
| | - Magdalena Frej-Mądrzak
- Department of Basic Sciences, Faculty of Health Sciences, Medical University, 50-367 Wroclaw, Poland
| | - Jolanta Sarowska
- Department of Basic Sciences, Faculty of Health Sciences, Medical University, 50-367 Wroclaw, Poland
| | | | - Irena Choroszy-Król
- Department of Basic Sciences, Faculty of Health Sciences, Medical University, 50-367 Wroclaw, Poland
| | - Agnieszka Jama-Kmiecik
- Department of Basic Sciences, Faculty of Health Sciences, Medical University, 50-367 Wroclaw, Poland
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Ning Z, Wang S, Guo C, Zhang M. The impact of environmental factors on the transport and survival of pathogens in agricultural soils from karst areas of Yunnan province, China: Laboratory column simulated leaching experiments. Front Microbiol 2023; 14:1143900. [PMID: 37007467 PMCID: PMC10060967 DOI: 10.3389/fmicb.2023.1143900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 02/22/2023] [Indexed: 03/18/2023] Open
Abstract
IntroductionGroundwater is considered the best candidate for drinking water supply in the karst area. The groundwater water resources, however, are vulnerable to pathogenic microorganism contamination because of the typically thin soil layers overlying aquifers and the high permeability of the aquifer host rock, resulting in short residence times and low natural attenuation capacities. Until now, little attention has been paid to the critical environmental factors affecting the pathogenic microorganism contamination in soil-groundwater systems in the karst area.MethodsIn the study, orthogonality column experiments with controlling ambient temperatures, pH values of inlet water, and soil porosities were carried out to investigate the transport and lifespan of pathogenic microorganisms in the leachate of agricultural soils in the karst area of Yunnan province, China. The pathogenic indicators, i.e., total bacteria count (TBC) and total coliforms count (TCC), and hydrochemical parameters, i.e., pH and permanganate index (CODMn) in the leaching water, were systematically monitored.Results and DiscussionThe results showed that bacteria including coliforms can survive for prolonged periods of time in karst soils. The soils overlying the karst rocks were unable to impede the bacteria from seeping into the groundwater. The soils, in turn, likely served as both reservoirs and incubators for pathogenic bacteria. The ambient temperature was the most predominant influential factor affecting both TBC and TCC. The bacteria concentrations were proportional to the temperature in the leachate. Therefore, more attention should be paid to temperature variations in protecting the water supply, particularly in the high-temperature period, such as during the summer months.
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Affiliation(s)
- Zhuo Ning
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, China
- Key Laboratory of Groundwater Remediation of Hebei Province and China Geological Survey, Zhengding, China
| | - Shuaiwei Wang
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, China
- *Correspondence: Shuaiwei Wang,
| | - Caijuan Guo
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, China
| | - Min Zhang
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, China
- Key Laboratory of Groundwater Remediation of Hebei Province and China Geological Survey, Zhengding, China
- Min Zhang,
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Chemical Composition and Biological Activities of Essential Oils of Four Asarum Species Growing in Vietnam. Molecules 2023; 28:molecules28062580. [PMID: 36985550 PMCID: PMC10053891 DOI: 10.3390/molecules28062580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/08/2023] [Accepted: 03/09/2023] [Indexed: 03/14/2023] Open
Abstract
The essential oils (EOs) of the aerial parts of four Asarum species (A. geophilum, A. yentunensis, A. splendens and A. cordifolium) were isolated by steam distillation and analyzed by the GC/MS method. The A. cordifolium EO contains 33 constituents with the main component being elemicine (77.20%). The A. geophilum EO was contains 49 constituents with the main components being determined as 9-epi-(E)-caryophyllene (18.43%), eudesm-7(11)-en-4-ol (13.41%), β-caryophyllene (8.05%) and phytol (7.23%). The A. yentunensis EO contains 26 constituents with the main components being safrole (64.74%) and sesquicineole (15.34%). The EO of A. splendens contains 41 constituents with the main components being 9-epi-(E)-caryophyllene (15.76%), eudesm-7(11)-en-4-ol (14.21%), β-caryophyllene (9.52%) and trans-bicyclogermacrene (7.50%). For antimicrobial activity, the A. yentunensis EO exhibited the highest inhibition activity against Staphylococcus aureus and the A. cordifolium EO against Bacillus subtillis (MIC values of 100 μg/mL). For antioxidant activity, the A. geophilum EO showed the highest potential with an SC (%) value of 63.34 ± 1.0%, corresponding to an SC50 value of 28.57 µg/mL. For anti-inflammatory activity, the A. splendens EO exhibited the highest potential with an IC50 value of 21.68 µg/mL, corresponding to an inhibition rate of NO production of 69.58 ± 1.3% and the percentage of cell life was 81.85 ± 0.9%.
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Diversity of Bacterial Clones and Plasmids of NDM-1 Producing Escherichia coli Clinical Isolates in Central Greece. Microorganisms 2023; 11:microorganisms11020516. [PMID: 36838481 PMCID: PMC9959086 DOI: 10.3390/microorganisms11020516] [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] [Received: 01/17/2023] [Revised: 02/09/2023] [Accepted: 02/16/2023] [Indexed: 02/22/2023] Open
Abstract
The objective of the present study was to genetically characterize ten NDM-1 producing Escherichia coli isolates, recovered from patients in a hospital in Central Greece during the period 2017 to 2021.The isolates were studied by whole genome sequencing to obtain multi-locus sequencing typing (MLST), identification of blaNDM1-environment, resistome and plasmid content. MLST analysis showed the presence of eight sequence types: ST46* (two isolates), ST46, ST744, ST998, ST410, ST224, ST4380, ST683 and ST12 (one isolate each). Apart of the presence of blaNDM-1, the isolates carried a combination of various to β-lactams encoding resistance genes: blaTEM-1B, blaCTX-15, blaOXA-1, blaVIM-1, blaSHV-5, blaOXA-16, blaOXA-10 and blaVEB-1. Additionally, plurality of resistance genes to aminoglycosides, macrolides, rifamycin, phenicols, sulfonamides and tetracycline was detected. The presence of multiple replicons was observed, with predominance of IncFII and IncFIB. Analysis of blaNDM-1 genetic environment of the isolates showed that seven had 100% identity with the pS-3002cz plasmid (Accession Number KJ 958927), two with the pB-3002cz plasmid (Accession Number KJ958926) and one with the pEc19397-131 plasmid (Accession Number MG878866). Τhis latter plasmid was derived by the fusion of two, previously identified, plasmids, pAMPD2 and pLK75 (Accession Numbers CP078058 and KJ440076, respectively). The diversity of clones and plasmids of NDM-1 producing E. coli isolated from patients in Greece indicates a continuous horizontal gene transfer.
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Bhatt D, Singh S, Singhal N, Bhardwaj N, Deep A. Glyco-conjugated metal-organic framework biosensor for fluorescent detection of bacteria. Anal Bioanal Chem 2023; 415:659-667. [PMID: 36462049 DOI: 10.1007/s00216-022-04455-z] [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: 08/01/2022] [Revised: 11/17/2022] [Accepted: 11/21/2022] [Indexed: 12/04/2022]
Abstract
Metal-organic frameworks (MOFs) are hybrid materials constructed by the linkage between an inorganic secondary building unit and an organic linker. A number of MOFs are luminescent in nature and can be structurally tuned for desirable geometry, surface functionality, and porosity. Luminescent MOFs have been endorsed for various biosensing applications. Lectins and carbohydrates have been used for the development of simple and convenient biosensing and bioimaging tools. Lectins are mostly present on the surface of microorganisms where they aid in pathogenesis. Due to this, they can be potential targets for a microbial biosensor. The present study, for the first time, explores the usage of a carbohydrate-conjugated FeMOF (Glyco-MOF) bioprobe for the selective determination of Pseudomonas aeruginosa and Escherichia coli. NH2-MIL-53(Fe) MOF was synthesized via a room temperature protocol and separately conjugated with galactose and mannose sugars via glutaraldehyde chemistry. The synthesized bioprobe is validated for structural integrity, luminescent nature, stability, and analyte assay. Electron microscopy studies validated the unhindered MOF's morphology and structural integrity, after bioconjugation. The synthesized bioprobes were able to detect P. aeruginosa and E. coli up to respective detection limits of 202 and 8 CFU/mL, respectively. The bioprobes are selective even in co-presence of possible interferants as well as being environmentally stable.
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Affiliation(s)
- Deepanshu Bhatt
- Central Scientific Instruments Organisation (CSIR-CSIO), Sector 30-C, Chandigarh, 160030, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Shalini Singh
- Central Scientific Instruments Organisation (CSIR-CSIO), Sector 30-C, Chandigarh, 160030, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Nitin Singhal
- National Agri-Food Biotechnology Institute (NABI), Sector 81, SAS Nagar, Mohali, Punjab, 140306, India
| | - Neha Bhardwaj
- Department of Biotechnology, University Institute of Engineering Technology (UIET), Panjab University, Chandigarh, India
| | - Akash Deep
- Central Scientific Instruments Organisation (CSIR-CSIO), Sector 30-C, Chandigarh, 160030, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Antioxidant and Antimicrobial Evaluations of Moringa oleifera Lam Leaves Extract and Isolated Compounds. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020899. [PMID: 36677956 PMCID: PMC9866898 DOI: 10.3390/molecules28020899] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/03/2023] [Accepted: 01/05/2023] [Indexed: 01/18/2023]
Abstract
Moringa oleifera, native to India, grows in tropical and subtropical regions around the world and has valuable pharmacological properties such as anti-asthmatic, anti-diabetic, anti-inflammatory, anti-infertility, anti-cancer, anti-microbial, antioxidant, and many more. The purpose of this study was to assess the free radical scavenging ability of two extracts and two pure compounds of M. oleifera Lam (hexane, ethanol, compound E3, and compound Ra) against reactive oxygen species, as well as their reducing power and antimicrobial activities. Bioautography antioxidant assay, 2,2-diphenyl-1-picrylhydrazyl (DPPH), hydrogen peroxide (H2O2) free radical scavenging, and iron (iii) (Fe3+ to Fe2+) chloride reducing power assays were used to assess the extracts' qualitative and quantitative free radical scavenging activities. Furthermore, the extract and the compounds were tested against both Gram-positive and Gram-negative bacterial strains suspended in Mueller-Hinton Broth. The extracts and pure compounds showed noteworthy antioxidant potential, with positive compound bands in the Rf range of 0.05-0.89. DPPH), H2O2, and Fe3+ to Fe2+ reduction assays revealed that ethanol extract has a high antioxidant potential, followed by compound E3, compound Ra, and finally hexane extract. Using regression analysis, the half maximal inhibitory concentration (IC50) values for test and control samples were calculated. Compound Ra and ethanol exhibited high antioxidant activity at concentrations as low as ≈0.28 mg/mL in comparison with n-hexane extract, compound E3, ascorbic acid, and butylated hydroxytoluene standards. The radical scavenging activity of almost all M. oleifera plant extracts against DPPH was observed at 0.28 mg/mL; however, the highest activity was observed at the same concentration for ascorbic acid and butylated hydroxytoluene (BHT) with a low IC50 value of 0.08 mg/mL and compound Ra and ethanol with a low IC50 of 0.4 mg/mL, respectively. The extracts and pure compounds of M. oleifera have little to no antibacterial potential. M. oleifera extracts contain antioxidant agents efficient to alleviate degenerative conditions such as cancer and cardiovascular disease but have little activity against infectious diseases.
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Abu-Aqil G, Suleiman M, Sharaha U, Riesenberg K, Lapidot I, Huleihel M, Salman A. Fast identification and susceptibility determination of E. coli isolated directly from patients' urine using infrared-spectroscopy and machine learning. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 285:121909. [PMID: 36170776 DOI: 10.1016/j.saa.2022.121909] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 08/18/2022] [Accepted: 09/18/2022] [Indexed: 06/16/2023]
Abstract
For effective treatment, it is crucial to identify the infecting bacterium at the species level and to determine its antimicrobial susceptibility. This is especially true now, when numerous bacteria have developed multidrug resistance to most commonly used antibiotics. Currently used methods need ∼ 48 h to identify a bacterium and determine its susceptibility to specific antibiotics. This study reports the potential of using infrared spectroscopy with machine learning algorithms to identify E. coli isolated directly from patients' urine while simultaneously determining its susceptibility to antibiotics within ∼ 40 min after receiving the patient's urine sample. For this goal, 1,765 E. coli isolates purified directly from urine samples were collected from patients with urinary tract infections (UTIs). After collection, the samples were tested by infrared microscopy and analyzed by machine learning. We achieved success rates of ∼ 96% in isolate level identification and ∼ 84% in susceptibility determination.
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Affiliation(s)
- George Abu-Aqil
- Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Manal Suleiman
- Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Uraib Sharaha
- Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
| | - Klaris Riesenberg
- Director of Microbiology Laboratory, Soroka University Medical Center, Beer-Sheva 84105, Israel
| | - Itshak Lapidot
- Department of Electrical and Electronics Engineering, ACLP-Afeka Center for Language Processing, Afeka Tel-Aviv Academic College of Engineering, Tel-Aviv 69107, Israel
| | - Mahmoud Huleihel
- Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.
| | - Ahmad Salman
- Department of Physics, SCE - Shamoon College of Engineering, Beer-Sheva 84100, Israel.
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Mwansa M, Mukuma M, Mulilo E, Kwenda G, Mainda G, Yamba K, Bumbangi FN, Muligisa-Muonga E, Phiri N, Silwamba I, Muma JB. Determination of antimicrobial resistance patterns of Escherichia coli isolates from farm workers in broiler poultry production and assessment of antibiotic resistance awareness levels among poultry farmers in Lusaka, Zambia. Front Public Health 2023; 10:998860. [PMID: 36703831 PMCID: PMC9871586 DOI: 10.3389/fpubh.2022.998860] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 12/09/2022] [Indexed: 01/12/2023] Open
Abstract
The challenges posed by antibiotic-resistant pathogens have continued to increase worldwide, particularly in resource-limited countries. Human-livestock interactions are implicated in the complex AMR causal web. A cross-sectional study was conducted in four districts of Lusaka Province, Zambia to determine the antibiotic resistance patterns, ESBL production of E. coli isolated from stool samples of broiler poultry farm workers, and to assess poultry farmers' antibiotic resistance awareness. Sixty-six human stool samples were collected and processed for E. coli isolation, antibiotic resistance testing, and screened for ESBL production. In addition, 80 farmers were assessed for their level of awareness on antibiotic resistance. A total of 58 single E. coli isolates were obtained which showed high (87.9%) resistance to tetracycline, trimethoprim/sulfamethoxazole (48.3%), and ampicillin (46.8%); followed by nalidixic acid (19.0%), ciprofloxacin (12.1%), cefotaxime (8.6%) and chloramphenicol (5.2%). The prevalence of AMR E. coli was 67.2%, and 29.3% were MDR. Two (3.4%) isolates were identified to be ESBL producers, harboring the CTX-M gene. The study results also showed that broiler farmers were aware and knowledgeable of antibiotic resistance, although knowledge about its impact on human health was low. This study demonstrated the presence of resistant and ESBL producing E. coli among poultry farm workers.
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Affiliation(s)
- Mwaba Mwansa
- Department of Basic Medical Sciences, Michael Chilufya Sata School of Medicine, Copperbelt University, Ndola, Zambia
| | - Mercy Mukuma
- Department of Food Science and Nutrition, School of Agricultural Sciences, University of Zambia, Lusaka, Zambia
| | - Esther Mulilo
- Department of Food Science and Nutrition, School of Agricultural Sciences, University of Zambia, Lusaka, Zambia
| | - Geoffrey Kwenda
- Department of Biomedical Sciences, School of Health Sciences, University of Zambia, Lusaka, Zambia
| | - Geoffrey Mainda
- Department of Veterinary Services, Public Health Unit, Ministry of Fisheries and Livestock, Lusaka, Zambia
| | - Kaunda Yamba
- Department of Pathology and Microbiology, University Teaching Hospitals, Lusaka, Zambia
| | - Flavien Nsoni Bumbangi
- Department of Medicine and Clinical Studies, School of Medicine, Eden University, Lusaka, Zambia
| | | | - Nelson Phiri
- Department of Environmental Health, School of Medicine, Eden University, Lusaka, Zambia
| | - Isaac Silwamba
- Livestock Services Cooperative Society, Department of Laboratory and Diagnostics, Lusaka, Zambia
| | - John Bwalya Muma
- Department of Disease Control, School of Veterinary Medicine, University of Zambia, Lusaka, Zambia
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Trzcińska-Wencel J, Wypij M, Rai M, Golińska P. Biogenic nanosilver bearing antimicrobial and antibiofilm activities and its potential for application in agriculture and industry. Front Microbiol 2023; 14:1125685. [PMID: 36891391 PMCID: PMC9986290 DOI: 10.3389/fmicb.2023.1125685] [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: 12/16/2022] [Accepted: 01/30/2023] [Indexed: 02/22/2023] Open
Abstract
Introduction Due to the increasing resistance of bacteria and fungi to antimicrobials, it is necessary to search for effective alternatives to prevent and treat pathogens causing diseases in humans, animals, and plants. In this context, the mycosynthesized silver nanoparticles (AgNPs) are considered as a potential tool to combat such pathogenic microorganisms. Methods AgNPs were synthesized from Fusarium culmorum strain JTW1 and characterized by Transmission Electron Microscopy (TEM), X-ray diffraction (XRD), Fourier Transform Infrared (FTIR) spectroscopy, Nanoparticle Tracking Analysis (NTA), Dynamic Light Scattering (DLS) and Zeta potential measurement. The minimum inhibitory (MIC) and biocidal concentrations (MBC) were determined against 13 bacterial strains. Moreover, the combined effect of AgNPs with antibiotics (streptomycin, kanamycin, ampicillin, tetracycline) was also studied by determining the Fractional Inhibitory Concentration (FIC) index. The anti-biofilm activity was examined by crystal violet and fluorescein diacetate (FDA) assays. Furthermore, antifungal activity of AgNPs was evaluated against a panel of phytopathogenic fungi viz., Botrytis, Colletotrichum, Fusarium, Phoma, Sclerotinia, and an oomycete pathogen Phytophthora by agar well-diffusion and micro-broth dilution method to evaluate the minimal AgNPs concentrations that inhibit fungal spore germination. Results Fungi-mediated synthesis resulted in the formation of small (15.56 ± 9.22 nm), spherical and stable (zeta potential of - 38.43 mV) AgNPs with good crystallinity. The results of FTIR spectroscopy indicated the presence of various functional groups, namely hydroxyl, amino, and carboxyl ones, from the biomolecules on the surface of AgNPs. The AgNPs showed antimicrobial and antibiofilm formation activities against Gram-positive and Gram-negative bacteria. The values of MIC and MBC ranged between 16-64 and 32-512 μg mL-1, respectively. The enhanced effect of AgNPs in combination with antibiotics was confirmed against human pathogens. The highest synergistic effect (FIC = 0.0625) was demonstrated by the combination of AgNPs with streptomycin against two strains of Escherichia coli (ATCC 25922 and ATCC 8739), followed by Klebsiella pneumoniae and Pseudomonas aeruginosa (FIC = 0.125). Enhanced effects of AgNPs with ampicillin were also shown against Staphylococcus aureus ATCC 25923 (FIC = 0.125) and P. aeruginosa (FIC = 0.25), as well as kanamycin against S. aureus ATCC 6538 (FIC = 0.25). The crystal violet assay revealed that the lowest concentration of AgNPs (0.125 μg mL-1) reduced the development of biofilms of Listeria monocytogenes and Salmonella enterica, while the maximum resistance was shown by Salmonella infantis, its biofilm was reduced after exposure to a concentration of 512 μg mL-1. A high inhibitory effect on the activity of bacterial hydrolases was observed by the FDA assay. AgNPs at a concentration of 0.125 μg mL-1 reduced the hydrolytic activity of all biofilms formed by the tested pathogens, except E. coli ATCC 25922, P. aeruginosa, and Pectobacterium carotovorum (efficient concentration was 2-fold higher, at 0.25 μg mL-1), while the hydrolytic activity of E. coli ATCC 8739, Salmonella infantis and S. aureus ATCC 6538 was suppressed after treatment with AgNPs at concentrations of 0.5, 2 and 8 μg mL-1, respectively. Moreover, AgNPs inhibited fungal growth and spore germination of Botrytis cinerea, Phoma lingam, and Sclerotinia sclerotiorum. MIC and MFC values of AgNPs against spores of these fungal strains were determined at 64, 256, and 32 μg mL-1, and zones of growth inhibition were 4.93, 9.54, and 3.41 mm, respectively. Discussion Fusarium culmorum strain JTW1 was found to be an eco-friendly biological system for an easy, efficient and inexpensive synthesis of AgNPs. In our study, the mycosynthesised AgNPs demonstrated remarkable antimicrobial (antibacterial and antifungal) and antibiofilm activities against a wide range of human and plant pathogenic bacteria and fungi singly and in combination with antibiotics. These AgNPs could be applied in medicine, agriculture, and food industry to control such pathogens that cause numerous human diseases and crop losses. However, before using them extensive animal studies are required to evaluate the toxicity, if any.
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Affiliation(s)
| | - Magdalena Wypij
- Department of Microbiology, Nicolaus Copernicus University in Toruń, Toruń, Poland
| | - Mahendra Rai
- Department of Microbiology, Nicolaus Copernicus University in Toruń, Toruń, Poland.,Nanobiotechnology Laboratory, Department of Biotechnology, SGB Amravati University, Amravati, Maharashtra, India
| | - Patrycja Golińska
- Department of Microbiology, Nicolaus Copernicus University in Toruń, Toruń, Poland
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Long N, Deng J, Qiu M, Zhang Y, Wang Y, Guo W, Dai M, Lin L. Inflammatory and pathological changes in Escherichia coli infected mice. Heliyon 2022; 8:e12533. [PMID: 36643320 PMCID: PMC9834738 DOI: 10.1016/j.heliyon.2022.e12533] [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: 08/30/2022] [Revised: 10/31/2022] [Accepted: 12/14/2022] [Indexed: 12/25/2022] Open
Abstract
Purpose Understanding the inflammation and histopathological changes in vivo caused by Escherichia coli infection is of great significance for scientific research and clinical diagnosis. Methods Mice were randomly divided into 6 groups (N = 10) after adaptive feeding, and it challenged by intraperitoneal injection with different concentrations of E. coli ATCC25922. The survival situation within 7 days was recorded, and the half-lethal dose (LD50) was calculated by Karber's method. After the end, the blood, heart, liver, spleen, lung, and kidney of the mice were collected. We detected the concentration of inflammatory cytokines (IL-6, IL-β, and TNF-α) and inducible nitric oxide synthase (iNOS) in serum by ELSIA. Organs were observed by histopathological staining and electron microscope observation. Results The LD50 of mice infected with E. coli was 1.371∗106 CFU/kg. The concentrations of IL-6, IL-β, and TNF-α increased with time after infection in mice, reaching the highest concentration on the 7th day. iNOS was significantly increased on the 1st day of infection, and then decreased over time (P < 0.01). Within a week after infection, the colony counts of the heart, liver, spleen, lung and kidney showed a first decrease, and then reached a surge on the 7th day. Pathological results showed that a small amount of mitochondrial swelling and autophagy were seen in the spleen, lung and kidney tissues of the infected group; and a small amount of secondary lysosomes and autophagy were also seen; but no pathological changes were found in the liver and heart. Conclusion Escherichia coli can cause inflammation and oxidative stress in mice, causing different degrees of damage to the spleen, lung, and kidney tissues, which provides theoretical support for inflammatory and pathological changes caused by Escherichia coli infection in vivo.
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Affiliation(s)
- Nana Long
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, Sichuan, PR China,Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu, 610500, Sichuan, PR China
| | - Jingzhu Deng
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, Sichuan, PR China,Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu, 610500, Sichuan, PR China
| | - Min Qiu
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, Sichuan, PR China,Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu, 610500, Sichuan, PR China
| | - Yanjiao Zhang
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, Sichuan, PR China,Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu, 610500, Sichuan, PR China
| | - Yuzhen Wang
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, Sichuan, PR China,Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu, 610500, Sichuan, PR China
| | - Wei Guo
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, Sichuan, PR China,Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu, 610500, Sichuan, PR China
| | - Min Dai
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, Sichuan, PR China,Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu, 610500, Sichuan, PR China,Corresponding author.
| | - Lin Lin
- School of Laboratory Medicine, Chengdu Medical College, Chengdu, Sichuan, PR China,Sichuan Provincial Engineering Laboratory for Prevention and Control Technology of Veterinary Drug Residue in Animal-origin Food, Chengdu Medical College, Chengdu, 610500, Sichuan, PR China,Corresponding author.
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Current and Emerging Treatment Options for Multidrug Resistant Escherichia coli Urosepsis: A Review. Antibiotics (Basel) 2022; 11:antibiotics11121821. [PMID: 36551478 PMCID: PMC9774639 DOI: 10.3390/antibiotics11121821] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/13/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Escherichia coli is a versatile commensal and pathogenic member of the human microflora. As the primary causative pathogen in urosepsis, E. coli places an immense burden on healthcare systems worldwide. To further exacerbate the issue, multi drug resistance (MDR) has spread rapidly through E. coli populations, making infections more troublesome and costlier to treat. This paper aimed to review the literature concerning the development of MDR in uropathogenic E. coli (UPEC) and explore the existing evidence of current and emerging treatment strategies. While some MDR strains maybe treated with β-lactam-β-lactamase inhibitor combinations as well as cephalosporins, cephamycin, temocillin and fosfomycin, current treatment strategies for many MDR UPEC strains are reliant on carbapenems. Carbapenem overreliance may contribute to the alarming dissemination of carbapenem-resistance amongst some UPEC communities, which has ushered in a new age of difficult to treat infections. Alternative treatment options for carbapenem resistant UPEC may include novel β-lactam-β-lactamase or carbapenemase inhibitor combinations, cefiderocol, polymyxins, tigecycline, aminoglycosides or fosfomycin. For metallo-β-lactamase producing strains (e.g., NDM, IMP-4), combinations of cefazidime-avibacam with aztreonam have been used. Additionally, the emergence of new antimicrobials brings new hope to the treatment of such infections. However, continued research is required to successfully bring these into the clinic for the treatment of MDR E. coli urosepsis.
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Sindelo A, Nene L, Nyokong T. Photodynamic antimicrobial chemotherapy with asymmetrical cationic or neutral metallophthalocyanines conjugated to amino-functionalized zinc oxide nanoparticles (spherical or pyramidal) against planktonic and biofilm microbial cultures. Photodiagnosis Photodyn Ther 2022; 40:103160. [PMID: 36244683 DOI: 10.1016/j.pdpdt.2022.103160] [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: 08/15/2022] [Revised: 10/06/2022] [Accepted: 10/12/2022] [Indexed: 11/06/2022]
Abstract
The synthesis and characterization of neutral zinc and indium substituted mercaptobenzothiazole substituted phthalocyanines (Pcs) and their respective cationic derivatives are presented. The phthalocyanines were further covalently linked to two differently shaped amino-functionalized ZnO nanoparticles (ZnONPs): namely nanospheres (NH2-ZnONSp), and nanopyramids (NH2-ZnONPy), to form corresponding nanoconjugates. The photophysicochemical properties of each nanocomposite were determined, and the Pc-ZnONPs produced high singlet oxygen quantum yields. The photodynamic antimicrobial chemotherapy activity was determined using planktonic and biofilm cells of Staphylococcus aureus (S. aureus), Escherichia coli (E. coli), and Candida albicans (C. albicans). The conjugates of the cationic Pc derivatives with ZnONPy produced the highest log reduction values (∼ 8 and above) with the complete elimination of all planktonic cells at 0.45 kJ/cm2 for S. aureus and at 0.9 kJ/cm2 for E. coli, and C. albicans. For biofilms log reduction values >3 for both S. aureus and E. coli were obtained. The conjugates of the cationic Pc derivatives with NH2-ZnONPy showed great potential in eradicating mixed microbial biofilms.
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Affiliation(s)
- Azole Sindelo
- Institute of Nanotechnology Innovation, Rhodes University, PO Box 94, Makhanda 6140, South Africa
| | - Lindokuhle Nene
- Institute of Nanotechnology Innovation, Rhodes University, PO Box 94, Makhanda 6140, South Africa
| | - Tebello Nyokong
- Institute of Nanotechnology Innovation, Rhodes University, PO Box 94, Makhanda 6140, South Africa.
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Wu R, Dong X, Wang Q, Zhang Z, Wang J, Wang X. D1018 with higher stability and excellent lipopolysaccharide binding affinity has potent anti-bacterial and anti-inflammatory activity. Front Microbiol 2022; 13:1010017. [DOI: 10.3389/fmicb.2022.1010017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 11/02/2022] [Indexed: 12/02/2022] Open
Abstract
Escherichia coli (E. coli) infection and LPS-induced inflammation are still of severe threat to human health. With the increasing problem of antibiotic resistance, there is a desperate need to develop new approaches to solve the problem. Antimicrobial peptide (AMP) IDR-1018 exhibited potential antimicrobial and immunoregulation activity. However, moderate antimicrobial efficiency and susceptibility to protease cleavage limited its therapeutic application. Therefore, the derived 1018M which has better activity against MRSA and whole sequence D-amino acids substitution peptides (D1018 and D1018M) were synthesized in this study. The resistance of D1018 and D1018M against tested proteases increased (2–4 times), particularly in D1018. The antibacterial activity of D1018 was the same as that of the parent peptide IDR-1018, but the antimicrobial activity of D1018M was slightly increased (2-fold). Though the hemolysis of IDR-1018 and D1018 was about 2%, at the concentration of 8×MIC, the cytotoxicity of IDR-1018, D1018, and 1018M was negligible. The peptides could interact with E. coli cell wall and cytoplasmic membrane, penetrate the membrane, cause leakage of contents, and disrupt genomic DNA. Among them, D1018 is the most prominent one. In addition, IDR-1018 and D1018 showed potent binding ability to LPS, thus leading to excellent inhibition capacity to LPS-induced proinflammation response. Taken together, these data demonstrate that D1018 is a promising peptide candidate for the treatment of E. coli infection.
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Liu S, She P, Li Z, Li Y, Li L, Yang Y, Zhou L, Wu Y. Drug synergy discovery of tavaborole and aminoglycosides against Escherichia coli using high throughput screening. AMB Express 2022; 12:151. [PMID: 36454354 PMCID: PMC9715904 DOI: 10.1186/s13568-022-01488-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 11/01/2022] [Indexed: 12/05/2022] Open
Abstract
High incidences of urinary tract infection (UTI) of aminoglycosides-resistant E.coli causes a severe burden for public health. A new therapeutic strategy to ease this crisis is to repurpose non-antibacterial compounds to increase aminoglycosides sensibility against multidrug resistant E.coli pathogens. Based on high throughput screening technology, we profile the antimicrobial activity of tavaborole, a first antifungal benzoxaborole drug for onychomycosis treatment, and investigate the synergistic interaction between tavaborole and aminoglycosides, especially tobramycin and amikacin. Most importantly, by resistance accumulation assay, we found that, tavaborole not only slowed resistance occurrence of aminoglycosides, but also reduced invasiveness of E.coli in combination with tobramycin. Mechanistic studies preliminary explored that tavaborole and aminoglycosides lead to mistranslation, but would be still necessary to investigate more details for further research. In addition, tavaborole exhibited low systematic toxicity in vitro and in vivo, and enhanced aminoglycoside bactericidal activity in mice peritonitis model. Collectively, these results suggest the potential of tavaborole as a novel aminoglycosides adjuvant to tackle the clinically relevant drug resistant E. coli and encourages us to discover more benzoxaborole analogues for circumvention of recalcitrant infections.
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Affiliation(s)
- Shasha Liu
- grid.431010.7Department of Laboratory Medicine, The Third Xiangya Hospital, Central South University, Changsha, 410000 Hunan China
| | - Pengfei She
- grid.431010.7Department of Laboratory Medicine, The Third Xiangya Hospital, Central South University, Changsha, 410000 Hunan China
| | - Zehao Li
- grid.431010.7Department of Laboratory Medicine, The Third Xiangya Hospital, Central South University, Changsha, 410000 Hunan China
| | - Yimin Li
- grid.431010.7Department of Laboratory Medicine, The Third Xiangya Hospital, Central South University, Changsha, 410000 Hunan China
| | - Linhui Li
- grid.431010.7Department of Laboratory Medicine, The Third Xiangya Hospital, Central South University, Changsha, 410000 Hunan China
| | - Yifan Yang
- grid.431010.7Department of Laboratory Medicine, The Third Xiangya Hospital, Central South University, Changsha, 410000 Hunan China
| | - Linying Zhou
- grid.216417.70000 0001 0379 7164Department of Laboratory Medicine, The Affiliated Changsha Hospital of Xiangya School of Medicine, Central South University, Changsha, 410000 Hunan China
| | - Yong Wu
- grid.216417.70000 0001 0379 7164Department of Laboratory Medicine, The Affiliated Changsha Hospital of Xiangya School of Medicine, Central South University, Changsha, 410000 Hunan China
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Orosz N, Tóthné Tóth T, Vargáné Gyuró G, Tibor Nábrádi Z, Hegedűsné Sorosi K, Nagy Z, Rigó É, Kaposi Á, Gömöri G, Adi Santoso CM, Nagy A. Comparison of Length of Hospital Stay for Community-Acquired Infections Due to Enteric Pathogens, Influenza Viruses and Multidrug-Resistant Bacteria: A Cross-Sectional Study in Hungary. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:15935. [PMID: 36498009 PMCID: PMC9739820 DOI: 10.3390/ijerph192315935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 11/25/2022] [Accepted: 11/27/2022] [Indexed: 06/17/2023]
Abstract
Community-acquired infections (CAI) can affect the duration of care and mortality of patients. Therefore, we aimed to investigate these as well as factors influencing the length of hospital stay in patients with CAI due to enteric pathogens, influenza viruses and multidrug-resistant (MDR) bacteria. We obtained data on 531 patients with CAI from the medical databases of a Hungarian university hospital and analyzed their characteristics using a regression model. Patients with MDR bacterial infection had the highest mortality (26.24%) and they stayed significantly longer in the hospital than cases with other CAIs. Our results showed that infection by Clostridioides difficile (odds ratio (OR): 6.98, 95% confidence interval (CI): 1.03-47.48; p = 0.047), MDR Escherichia coli (OR: 7.64, 95% CI: 1.24-47.17; p = 0.029), MDR Klebsiella spp. (OR: 7.35, 95% CI: 1.15-47.07; p = 0.035) and hospitalization in the department of pulmonology (OR: 5.48, 95% CI: 1.38-21.76; p = 0.016) and surgery (OR: 4.19, 95% CI: 1.18-14.81; p = 0.026) significantly increased, whereas female sex (OR: 0.62, 95% CI: 0.40-0.97; p = 0.037) and hospitalization in the department of pediatrics (OR: 0.17, 95% CI: 0.04-0.64; p = 0.009) decreased the odds of staying in the hospital for more than 6 days. Our findings provide new information on the epidemiology of CAI and can contribute to the development of public health programs that decrease the burden of infections acquired in the community.
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Affiliation(s)
- Nikolett Orosz
- Department of Hospital Hygiene, University of Debrecen Clinical Centre, 4032 Debrecen, Hungary
| | - Tünde Tóthné Tóth
- Department of Hospital Hygiene, University of Debrecen Clinical Centre, 4032 Debrecen, Hungary
| | - Gyöngyi Vargáné Gyuró
- Department of Hospital Hygiene, University of Debrecen Clinical Centre, 4032 Debrecen, Hungary
| | - Zsoltné Tibor Nábrádi
- Department of Hospital Hygiene, University of Debrecen Clinical Centre, 4032 Debrecen, Hungary
| | - Klára Hegedűsné Sorosi
- Department of Hospital Hygiene, University of Debrecen Clinical Centre, 4032 Debrecen, Hungary
| | - Zsuzsa Nagy
- Department of Hospital Hygiene, University of Debrecen Clinical Centre, 4032 Debrecen, Hungary
| | - Éva Rigó
- Department of Hospital Hygiene, University of Debrecen Clinical Centre, 4032 Debrecen, Hungary
| | - Ádám Kaposi
- Department of Hospital Hygiene, University of Debrecen Clinical Centre, 4032 Debrecen, Hungary
| | - Gabriella Gömöri
- Department of Hospital Hygiene, University of Debrecen Clinical Centre, 4032 Debrecen, Hungary
| | | | - Attila Nagy
- Department of Health Informatics, Faculty of Health Sciences, University of Debrecen, 4028 Debrecen, Hungary
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Zhao X, Miao Y, Adam FEA, Zhao H, Zhou Z, Su M, Li R, Yang B, Lv Z, Xiao S, Wang X, Wang J, Yang Z. ESBLs-producing Escherichia coli from sheep-origin: Genome-wide virulence genes identification and in vivo virulence assessment in mice and Galleria mellonella. Transbound Emerg Dis 2022; 69:3606-3617. [PMID: 36222239 DOI: 10.1111/tbed.14729] [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: 08/05/2022] [Revised: 09/19/2022] [Accepted: 10/02/2022] [Indexed: 02/07/2023]
Abstract
The worldwide spread of pathogenic Escherichia coli, together with the multidrug resistant linked with extended-spectrum β-lactamases (blaCTX-M , blaTEM and blaOXA ), not only affect the health of animals and humans but also bring huge economic losses to animal husbandry. Despite the high levels of virulence present in many extended-spectrum beta-lactamases (ESBLs)-producing E. coli isolates, however, few studies have comprehensively assessed the pathogenicity of ESBLs-producing E. coli isolates. Thus, the aim of the present study was to investigate the presence of virulence genes in third-generation cephalosporin-resistant E. coli and to assess their pathogenicity and zoonotic potential. Previously, we identified 67 ESBLs-producing E. coli strains from sheep anal swabs in northwest China. In this study, we genotypically and phenotypically characterized isolates of E. coli that produce ESBLs. According to the VirulenceFinder and virulence factors database, all ESBLs-producing E. coli strains harboured a wide range of virulence genes. The ColV plasmid-related genes (hlyF, ompT, iss, iutA and cvaC) were present in 52 (77.6%) ESBLs-producing E. coli isolates. Surprisingly, quite a number of extraintestinal pathogenic E. coli virulence-related genes were detected in 62 (92.5%) of 67 isolates. A total of 33 serotypes and 37 sequence types (STs) were found in 67 ESBLs-producing isolates. ST10 is the most prevalent ST, which is represented by five strains. The cluster analysis showed that CC10 and CC23 were the common clonal complexes (CCs). Predominant serotypes were O8 (10%) and O9 (9%) followed by 6% each of O89, O101 and O185. Most sheep-origin ESBLs-producing E. coli held the highly pathogenic to human and displayed moderate-to-vigorous-intensity motor capacity. The ESBLs-producing E. coli isolates with numerous virulence-related genes were able to cause multiple infectious diseases in animal models (mice, neonatal rats and Galleria mellonella). To our knowledge, this study represents an important first step for a comprehensive characterization of pathogenicity and zoonotic potential of sheep-origin ESBLs-producing E. coli isolates. These findings may be of significant value for the identification of pathogenicity and zoonotic potential risks associated with sheep-origin ESBLs-producing E. coli.
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Affiliation(s)
- Xueliang Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Yongqiang Miao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | | | - Haoyu Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Zilian Zhou
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Mengru Su
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Ruichao Li
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu, China
| | - Baowei Yang
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, China
| | - Zexun Lv
- College of Food Science and Engineering, Northwest A&F University, Yangling, Shaanxi, China
| | - Sa Xiao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Xinglong Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Juan Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
| | - Zengqi Yang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi, China
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Pérez-Etayo L, González D, Vitas AI. Clonal Complexes 23, 10, 131 and 38 as Genetic Markers of the Environmental Spread of Extended-Spectrum β-Lactamase (ESBL)-Producing E. coli. Antibiotics (Basel) 2022; 11:1465. [PMID: 36358120 PMCID: PMC9686695 DOI: 10.3390/antibiotics11111465] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/17/2022] [Accepted: 10/21/2022] [Indexed: 07/30/2023] Open
Abstract
In accordance with the global action plan on antimicrobial resistance adopted by the World Health Assembly in 2015, there is a need to develop surveillance programs for antimicrobial resistant bacteria. In this context, we have analyzed the clonal diversity of Extended-spectrum β-lactamase (ESBL)-producing Escherichia coli (E. coli) isolated from aquatic environments and human and food samples in Spain, with the aim of determining possible clonal complexes (CCs) that act as markers of the potential risk of transmission of these resistant bacteria. The phylogenetic groups, sequence types (STs) and CCs were determined by different Polymerase Chain Reaction (PCR) and Multilocus Sequence Typing (MLST) techniques. Phylogroup A was prevalent and was mainly present in food and water strains, while human strains were mostly associated with phylogroup B2. According to the observed prevalence in the different niches, CC23 and CC10 are proposed as markers of phylogroups A and C, related with the spread of blaCTX-M1 and blaCTX-M15 genes. Similarly, CC131 and CC38 could be associated to the dissemination of pathogenic strains (phylogroups B2 and D) carrying mainly blaCTX-M14 and blaCTX-M15 genes. Some strains isolated from wastewater treatment plants (WWTPs) showed identical profiles to those isolated from other environments, highlighting the importance that water acquires in the dissemination of bacterial resistance. In conclusion, the detection of these genetic markers in different environments could be considered as an alert in the spread of ESBL.
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Affiliation(s)
- Lara Pérez-Etayo
- Department of Microbiology and Parasitology, University of Navarra, 31008 Pamplona, Spain
- Navarra Institute for Health Research (IdiSNA), 31008 Pamplona, Spain
| | - David González
- Department of Microbiology and Parasitology, University of Navarra, 31008 Pamplona, Spain
- Navarra Institute for Health Research (IdiSNA), 31008 Pamplona, Spain
| | - Ana Isabel Vitas
- Department of Microbiology and Parasitology, University of Navarra, 31008 Pamplona, Spain
- Navarra Institute for Health Research (IdiSNA), 31008 Pamplona, Spain
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Abbasi E, van Belkum A, Ghaznavi-Rad E. Common Etiological Agents in Adult Patients with Gastroenteritis from Central Iran. Microb Drug Resist 2022; 28:1043-1055. [PMID: 36130139 DOI: 10.1089/mdr.2021.0177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Aims: This study represents the first analysis from Iran for both the frequency of the most common causes of infectious diarrhoea and their antibiotic resistance patterns in adult patients. Methods: Adult stool specimens (n = 211) were analyzed. Stool specimens were analyzed using standard microbiological, polymerase chain reaction, and reverse transcription polymerase chain reaction tests to identify bacterial, parasitic, and viral enteropathogens. Antibiotic resistance profiles were determined. Results: Enteropathogens were identified in 46.4% (98/211) of the surveyed samples. This included 33.1% (70/211) bacterial infections, including 9.9% (21/211) diarrheagenic Escherichia coli (DEC) and 8.5% (18/211) Shigella spp. We detected 7.1% (15/211) parasitic infections (mostly Giardia lamblia) and 6.1% (13/211) viral infections (mostly adenovirus). The DEC and Shigella spp. isolates included many multi-drug resistant (MDR) isolates (95.2% and 77.7%, respectively), and extended spectrum-β-lactamase (ESBL) genes were often present (57.1% and 61.1%, respectively). The most commonly identified ESBL genes in the DEC and Shigella spp. isolates were blaTEM (100% in both species), blaCTX-M15 (91.6% and 100%, respectively), AmpC blaCIT (80% and 100%, respectively), and blaDHA (80% and 100%, respectively). Conclusions: Bacterial infection was the primary cause of infectious diarrhea, affecting one-third of the adults. The frequency of DEC and Shigella spp. was higher than for other enteropathogens. The high prevalence of MDR, the elevated incidence of ESBL genes among Shigella spp. and DEC isolates, and the presence of quinolone resistance in the Salmonella spp. isolates represent a significant challenge for gastroenteritis diagnosis and treatment in this region.
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Affiliation(s)
- Elnaz Abbasi
- Department of Microbiology & Immunology, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran
| | - Alex van Belkum
- Data Analytics Department, BioMérieux, La Balme les Grottes, France
| | - Ehsanollah Ghaznavi-Rad
- Department of Microbiology & Immunology, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran.,Department of Biotechnology, Molecular and Medicine Research Center, Faculty of Medicine, Arak University of Medical Sciences, Arak, Iran
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Zhang X, Fang C, Zhang J, Hua W, He R, Zhou M. Carbapenemase- and Colistin Resistant Escherichia coli Strains from Children in China: High Genetic Diversity and First Report of bla NDM-5, bla CTX-M-65, bla OXA-10, bla TEM-1, and mcr-1.1 Genes Co-Occurrence in E. coli ST156. Infect Drug Resist 2022; 15:5315-5320. [PMID: 36110130 PMCID: PMC9467903 DOI: 10.2147/idr.s378574] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 08/20/2022] [Indexed: 11/23/2022] Open
Abstract
Background The emergence of carbapenem and colistin co-resistant Escherichia coli poses a huge challenge to infection control. The purpose of this study was to clarify the mechanism of the carbapenems and colistin co-resistance in E. coli strains. Methods Antimicrobial susceptibility test was carried out by agar dilution methods and colistin resistance was confirmed by broth microdilution methods. Whole genome sequencing was carried out, and resistance genes, sequence types and virulence genes of carbapenems and colistin co-resistance E. coli isolates were analyzed. Results The results showed that among the 176 carbapenem-resistant Enterobacteriaceae strains, 5 multidrug resistant E. coli strains exhibiting coresistance to carbapenem and colistin. The main mechanism of 5 E. coli strains in this study was generating carbapenem. Four E. coli strains were mcr-positive, while one mcr-negative strain had a new MgrB mutation. The blaNDM-5, blaCTX-M-65, blaOXA-10, blaTEM-1 and mcr-1.1 genes were simultaneously detected in E. coli 20IR1127 strain belonging to ST156 lineage. Other antimicrobial resistance genes encoding aminoglycosides-, sulfonamide-, chloramphenicol-, tetracyclines- and macrolides resistance were also detected. Conclusion The main mechanisms of carbapenem and colistin resistance were encoded by blaNDM and mcr1.1, meanwhile mgrB mutations also contribute to colistin resistance. To our knowledge, this study is the first to report of E. coli ST156 strain in which the blaNDM-5, blaCTX-M-65, blaOXA-10, blaTEM-1 and mcr1.1 genes coexist. In addition, there is also an E. coli ST457 strain, which carries blaTEM-1, blaNDM-9, blaCTX-M-199 and is positive for mcr1.1 gene.
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Affiliation(s)
- Xiucai Zhang
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, People's Republic of China
| | - Chao Fang
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, People's Republic of China
| | - Junfeng Zhang
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, People's Republic of China
| | - Wang Hua
- Department of Infectious Diseases, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, People's Republic of China
| | - Rong He
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, People's Republic of China
| | - Mingming Zhou
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, People's Republic of China
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Lv C, Shang J, Zhang W, Sun B, Li M, Guo C, Zhou N, Guo X, Huang S, Zhu Y. Dynamic antimicrobial resistant patterns of Escherichia coli from healthy poultry and swine over 10 years in Chongming Island, Shanghai. Infect Dis Poverty 2022; 11:98. [PMID: 36114584 PMCID: PMC9482194 DOI: 10.1186/s40249-022-01025-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 09/06/2022] [Indexed: 11/30/2022] Open
Abstract
Background Antimicrobial resistance (AMR) is one of the greatest threats to animal and public health. Here, we conducted a dynamic surveillance of Escherichia coli on Chongming Island in Shanghai during 2009–2021 to identify the characteristics and trends of Chongming’s AMR pandemic. Methods Rectal (cloaca) swabs from four poultry and nine swine farms (Chongming Island, 2009–2021) were collected for E. coli strains acquisition. The micro-broth dilution method was used to test antimicrobial susceptibility of E. coli isolates against 10 antimicrobial classes including 15 antimicrobials. Utilizing generalized linear mixed models (GLMMs) and co-occurrence analyses, we further explored the multiple-drug-resistance (MDR) combinations and dynamic patterns of E. coli over 10 years in two food animals. Results Total of 863 MDR isolates were found among 945 collected E. coli isolates, 337 from poultry and 608 from swine. Both isolates exhibited high resistant rates (> 70%) to tetracyclines, phenicols, sulfonamides, penicillins, and aminoglycosides (only in swine). The resistant rates of swine isolates to penicillins, aminoglycosides, tetracyclines, phenicols, and polymyxins were significantly higher than those of poultry isolates, whereas resistance to fluoroquinolones was reversed. Resistance to polymyxins decreased similarly in swine (42.4% in 2009 to 0.0% in 2021) and poultry isolates (from 16.5% to 0.0%). However, resistance to other seven antimicrobial classes (excluding carbapenems and penicillins) declined dramatically in swine isolates, particularly fluoroquinolones (from 80.5% to 14.4%), and tendencies of resistance to the seven classes showed markedly divergent patterns in poultry isolates. Using Poisson GLMMs, the AMR carriage since 2016 was significantly lower than that of 2009 (odds ratio < 1), indicating a decline in the risk of MDR emergence. Furthermore, despite the highly diverse MDR profiles, co-occurrence analysis identified two prominent MDR clusters of penicillins-phenicols-fluoroquinolones in poultry and aminoglycosides-tetracyclines-sulfonamides-phenicols in swine. Conclusions Our study uncovered vastly distinct AMR patterns and dynamic tendencies of poultry and swine E. coli isolates from Chongming. Meanwhile, Chongming’s AMR status has ameliorated, as indicated by the decline in antimicrobials prevalence (particularly in swine), lower likelihood of MDR emergence and low carbapenem-, cephalosporin-, and polymyxin resistance. Importantly, this surveillance results are the vital basis for future policy development in Chongming and Shanghai. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s40249-022-01025-4.
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Post AS, Guiraud I, Peeters M, Lompo P, Ombelet S, Karama I, Yougbaré S, Garba Z, Rouamba E, Tinto H, Jacobs J. Escherichia coli from urine samples of pregnant women as an indicator for antimicrobial resistance in the community: a field study from rural Burkina Faso. Antimicrob Resist Infect Control 2022; 11:112. [PMID: 36064435 PMCID: PMC9446845 DOI: 10.1186/s13756-022-01142-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 08/03/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
In low- and middle-income countries, surveillance of antimicrobial resistance (AMR) is mostly hospital-based and, in view of poor access to clinical microbiology, biased to more resistant pathogens. We aimed to assess AMR among Escherichia coli isolates obtained from urine cultures of pregnant women as an indicator for community AMR and compared the AMR results with those from E. coli isolates obtained from febrile patients in previously published clinical surveillance studies conducted within the same population in Nanoro, rural Burkina Faso. We furthermore explored feasibility of adding urine culture to standard antenatal care in a rural sub-Saharan African setting.
Methods
Between October 2016–September 2018, midstream urine samples collected as part of routine antenatal care in Nanoro district were cultured by a dipslide method and screened for antibiotic residues. Significant growth was defined as a pure culture of Enterobacterales at counts of ≥ 104 colony forming units/ml.
Results
Significant growth was observed in 202/5934 (3.4%) cultures; E. coli represented 155 (76.7%) of isolates. Among E. coli isolates, resistance rates to ampicillin, cotrimoxazole and ciprofloxacin were respectively 65.8%, 64.4% 16.2%, compared to 89.5%, 89.5% and 62.5% among E. coli from clinical isolates (n = 48 of which 45 from blood cultures). Proportions of extended spectrum beta-lactamase producers and multidrug resistance were 3.2% and 5.2% among E. coli isolates from urine in pregnant women versus 35.4%, and 60.4% respectively among clinical isolates.
Conclusions
The E. coli isolates obtained from healthy pregnant women had significantly lower AMR rates compared to clinical E. coli isolates, probably reflecting the lower antibiotic pressure in the pregnant women population. Adding urine culture to the routine urine analysis (dipstick) of antenatal care was feasible. The dipslide culture method was affordable and user-friendly and allowed on-site inoculation and easy transport; challenges were contamination (midstream urine sampling) and the semi-quantitative reading. Provided confirmation of the present findings in other settings, E. coli from urine samples in pregnant women may be a potential indicator for benchmarking, comparing, and monitoring community AMR rates across populations over different countries and regions.
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Zhu W, Ding Y, Huang C, Wang J, Wang J, Wang X. Genomic characterization of a novel bacteriophage STP55 revealed its prominent capacity in disrupting the dual-species biofilm formed by Salmonella Typhimurium and Escherichia coli O157: H7 strains. Arch Microbiol 2022; 204:597. [PMID: 36056994 DOI: 10.1007/s00203-022-03208-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 06/21/2022] [Accepted: 08/19/2022] [Indexed: 11/02/2022]
Abstract
Salmonella and Escherichia coli are important foodborne pathogens, forming bacterial biofilms that contribute to their virulence, antimicrobial resistance, and survival on surfaces. Broad lytic phages are promising alternatives to conventional technologies for pathogen biocontrol and reducing biofilms. Herein, we isolated and characterized a novel polyvalent phage STP55 that not only lyse some serotypes of Salmonella, but also some E. coli strains. It had a wide range of pH (4-12) and thermal (30-60 °C) tolerances. The latent time was determined to be 10 min in the one-step growth experiment. Morphological observations by transmission electron microscopy and phylogenetic analysis using terminase gene classified STP55 to family Ackermannviridae in the order Caudovirales, with a complex tail structure. The genome was found to comprise 157,708 bp double-stranded DNA, with 44.57% GC content, 207 predicted ORFs and with no genes associated with antibiotic resistance, toxins, lysogeny, and virulence factors. Particularly, phage STP55 was able to inhibit single- and dual-species biofilms formation by S. Typhimurium ATCC 14028 and E. coli O157: H7, with a reduction percentage of 51.0%, 47.8% and 52.8%, respectively. Moreover, more than 65.0%, 72.9% and 46.2% of an established, single- and dual-species biofilms by S. Typhimurium ATCC 14028 and E. coli O157: H7 were removed after 8 h exposure to the phage STP55, respectively. The elimination effect of STP55 on dual-species biofilm formed on lettuce was further observed by SEM. Overall, our results demonstrated that STP55 is a promising antimicrobial against Salmonella and E. coli.
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Affiliation(s)
- Wenjuan Zhu
- Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Wuhan, 430070, China.,College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yifeng Ding
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Chenxi Huang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ji Wang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jia Wang
- Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Wuhan, 430070, China.,College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China
| | - Xiaohong Wang
- Key Laboratory of Environment Correlative Dietology, Huazhong Agricultural University, Wuhan, 430070, China. .,College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China.
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