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You searched for: Subject term Escherichia coli Remove constraint Subject term: Escherichia coli Subject term Gram-negative bacteria Remove constraint Subject term: Gram-negative bacteria
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1. Aqueous synthesis of N-heterocyclic carbene-protected gold nanoclusters with intrinsic antibacterial activity

Author:
Qing Wu; Rui Peng; Fang Gong; Yufeng Luo; Hean Zhang; Qianling Cui
Source:
Colloids and surfaces 2022 v.645 pp. 128934
ISSN:
0927-7757
Subject:
Candida albicans; Escherichia coli; Gram-negative bacteria; Gram-positive bacteria; Staphylococcus aureus; X-ray photoelectron spectroscopy; antibacterial properties; carbenes; cell walls; heterocyclic nitrogen compounds; hydrophilicity; ligands; nanogold; nuclear magnetic resonance spectroscopy; reactive oxygen species; stabilizers
Abstract:
... N-Heterocyclic carbene (NHC) is regarded as a versatile ligand to stabilize gold nanoclusters (AuNCs) via forming strong Au-C bonds. However, reports on NHC-protected AuNCs are rare, especially in aqueous systems. Herein, we present a facile one-step approach to fabricate hydrophilic AuNCs in an aqueous medium using a NHC-based ligand as both a reducing agent and stabilizer. The coordination mecha ...
DOI:
10.1016/j.colsurfa.2022.128934

2. Changes in fluidity of the E. coli outer membrane in response to temperature, divalent cations and polymyxin‐B show two different mechanisms of membrane fluidity adaptation

Author:
Luis David Ginez; Aurora Osorio; Ricardo Vázquez‐Ramírez; Thelma Arenas; Luis Mendoza; Laura Camarena; Sebastian Poggio
Source:
FEBS journal 2022 v.289 no.12 pp. 3550-3567
ISSN:
1742-464X
Subject:
Escherichia coli; Gram-negative bacteria; dyes; fluorescence recovery after photobleaching; lipopolysaccharides; membrane fluidity; models; polymyxin B; temperature
Abstract:
... The outer membrane (OM) is an essential component of the Gram‐negative bacterial cell envelope. Restricted diffusion of integral OM proteins and lipopolysaccharide (LPS) that constitute the outer leaflet of the OM support a model in which the OM is in a semi‐crystalline state. The low fluidity of the OM has been suggested to be an important property of this membrane that even contributes to cell r ...
DOI:
10.1111/febs.16358

3. Lipid A Structural Determination from a Single Colony

Author:
Hyojik Yang; Richard D. Smith; Courtney E. Chandler; J. Kristie Johnson; Shelley N. Jackson; Amina S. Woods; Alison J. Scott; David R. Goodlett; Robert K. Ernst
Source:
Analytical chemistry 2022 v.94 no.21 pp. 7460-7465
ISSN:
1520-6882
Subject:
Escherichia coli; Gram-negative bacteria; analytical chemistry; bacterial culture; colistin; constitutional isomers; genes; glycosidic linkages; lipid A; moieties; patients; tandem mass spectrometry; urine
Abstract:
... We describe an innovative use for the recently reported fast lipid analysis technique (FLAT) that allows for the generation of MALDI tandem mass spectrometry data suitable for lipid A structure analysis directly from a single Gram-negative bacterial colony. We refer to this tandem MS version of FLAT as FLATⁿ. Neither technique requires sophisticated sample preparation beyond the selection of a sin ...
DOI:
10.1021/acs.analchem.1c05394

4. Molecular Mechanisms of Lipopolysaccharide (LPS) Induced Inflammation in an Immortalized Ovine Luteal Endothelial Cell Line (OLENDO)

Author:
Aykut Gram; Mariusz P. Kowalewski
Source:
Veterinary sciences 2022 v.9 no.3 pp. -
ISSN:
2306-7381
Subject:
Escherichia coli; Gram-negative bacteria; angiogenesis; cell lines; endothelial cells; inflammation; interleukin-6; interleukin-8; lipopolysaccharides; mammary glands; mitogen-activated protein kinase; morphogenesis; phosphorylation; sheep; transcription factor NF-kappa B; uterus
Abstract:
... Escherichia coli (E. coli) is the most common Gram-negative bacterium causing infection of the uterus or mammary gland and is one of the major causes of infertility in livestock. In those animals affected by E. coli driven LPS-mediated infections, fertility problems occur in part due to disrupted follicular and luteal functionality. However, the molecular mechanisms by which LPS induces inflammati ...
DOI:
10.3390/vetsci9030099

5. The impact of glutaraldehyde based footbaths on Dichelobacter nodosus prevalence and the antimicrobial resistant community of the ovine interdigital skin

Author:
Hayley J. Marshall; Adam M. Blanchard; Katie R. Kelly; Jia Ni Goh; Alexander D. Williams; Lis King; Fiona Lovatt; Peers L. Davies; Sabine Tötemeyer
Source:
Veterinary microbiology 2022 pp. 109459
ISSN:
0378-1135
Subject:
Dichelobacter nodosus; Escherichia coli; Gram-negative bacteria; agar; ampicillin; antibiotic resistance; antibiotic resistance genes; bacterial communities; community structure; footrot; glutaraldehyde; lameness; metagenomics; multiple drug resistance; pathogens; sheep; sheep industry; tetracycline
Abstract:
... Lameness is a significant problem for the UK sheep industry, accounting for approximately 65% of the industries total antibiotic use. Ovine footrot, the leading cause of infectious lameness, is a highly contagious polymicrobial bacterial infection, primarily caused by the Gram-negative bacterium Dichelobacter nodosus. Preventative antimicrobial footbaths are commonly used to reduce the spread of b ...
DOI:
10.1016/j.vetmic.2022.109459

6. A Large Insertion Domain in the Rho Factor From a Low G + C, Gram-negative Bacterium is Critical for RNA Binding and Transcription Termination Activity

Author:
Isabelle Simon; Mildred Delaleau; Annie Schwartz; Marc Boudvillain
Source:
Journal of molecular biology 2021 v.433 no.15 pp. 167060
ISSN:
0022-2836
Subject:
Actinobacteria; Bacteroides fragilis; Escherichia coli; Gram-negative bacteria; evolutionary adaptation; genomics; molecular biology; nucleoside-triphosphate phosphatase; transcription termination
Abstract:
... Rho-dependent termination of transcription (RDTT) is a critical regulatory mechanism specific to bacteria. In a subset of species including most Actinobacteria and Bacteroidetes, the Rho factor contains a large, poorly conserved N-terminal insertion domain (NID) of cryptic function. To date, only two NID-bearing Rho factors from high G + C Actinobacteria have been thoroughly characterized. Both ca ...
DOI:
10.1016/j.jmb.2021.167060

7. A novel strategy of nanosized herbal Plectranthus amboinicus, Phyllanthus niruri and Euphorbia hirta treated TiO2 nanoparticles for antibacterial and anticancer activities

Author:
P. Maheswari; S. Harish; S. Ponnusamy; C. Muthamizhchelvan
Source:
Bioprocess and biosystems engineering 2021 v.44 no.8 pp. 1593-1616
ISSN:
1615-7591
Subject:
Escherichia coli; Euphorbia hirta; Gram-negative bacteria; Gram-positive bacteria; Klebsiella pneumoniae; Phyllanthus niruri; Plectranthus amboinicus; Pseudomonas aeruginosa; Staphylococcus aureus; Streptococcus mutans; antibacterial properties; biocompatibility; bioprocessing; cancer therapy; cell viability; drugs; flow cytometry; mouth neoplasms; protein synthesis; titanium dioxide; toxicity; toxicity testing
Abstract:
... Titanium dioxide nanoparticles exhibit good anticancer and antibacterial activities. They are known to be environmentally friendly, stable, less toxic, and have excellent biocompatibility nature. Due to these properties, they are well suited for biological applications particularly in biomedical applications such as drug delivery and cancer therapy. In this research article, three medicinal herbs ...
DOI:
10.1007/s00449-020-02491-6

8. A rapid, antibiotic susceptibility test for multidrug-resistant, Gram-negative bacterial uropathogens using the biochemical assay, DETECT

Author:
Nicole Jackson; Clarissa A. Borges; Nicole J. Tarlton; Angel Resendez; Aubrianne K. Milton; Tara R. de Boer; Cheyenne R. Butcher; Niren Murthy; Lee W. Riley
Source:
Journal of microbiological methods 2021 v.182 pp. 106160
ISSN:
0167-7012
Subject:
Escherichia coli; Gram-negative bacteria; Klebsiella pneumoniae; antibiotic resistance; ciprofloxacin; multiple drug resistance; nitrofurantoin; rapid methods; sulfamethoxazole; trimethoprim; urinary tract
Abstract:
... The increasing prevalence of extended spectrum β-lactamases (ESBLs) and plasmid-mediated AmpC (pAmpC) β-lactamases among Enterobacterales threatens our ability to treat urinary tract infections (UTIs). These organisms are resistant to most β-lactam antibiotics and are frequently multidrug-resistant (MDR). Consequently, they are often resistant to antibiotics used to empirically treat UTIs. The lac ...
DOI:
10.1016/j.mimet.2021.106160

9. Antibacterial mechanisms of bacteriocin BM1157 against Escherichia coli and Cronobacter sakazakii

Author:
Lingli Luo; Lanhua Yi; Jiaxin Chen; Bianfang Liu; Xin Lü
Source:
Food control 2021 v.123 pp. 107730
ISSN:
0956-7135
Subject:
Cronobacter sakazakii; Escherichia coli; Gram-negative bacteria; amino acid metabolism; antibacterial properties; antibiotic resistance; antibiotics; bacteriocins; bioactive compounds; biofilm; carbohydrate metabolism; cell death; cell membranes; food safety; infection; lactate dehydrogenase; lipid metabolism; nucleic acids; permeability; propidium; proteome; synthesis; ultrastructure; virulent strains
Abstract:
... E. coli and C. sakazakii are both opportunistic pathogenic bacteria that widely found in food. Emerging of antibiotic resistance makes the treatment of Gram-negative bacteria infection become ever more difficult. Therefore, it is urgent to find new antibacterial compounds against Gram-negative bacteria. Our previous study showed that bacteriocin BM1157 had broad antibacterial activity against both ...
DOI:
10.1016/j.foodcont.2020.107730

10. Bioactivity and antimicrobial properties of chemically characterized compost teas from different green composts

Author:
Mariavittoria Verrillo; Melania Salzano; Vincenza Cozzolino; Riccardo Spaccini; Alessandro Piccolo
Source:
Waste management 2021 v.120 pp. 98-107
ISSN:
0956-053X
Subject:
Escherichia coli; Gram-negative bacteria; Klebsiella pneumoniae; Pseudomonas aeruginosa; antioxidant activity; antioxidants; artichokes; basil; dietary supplements; epicotyls; humans; hydrophobicity; infrared spectroscopy; lignin; minimum inhibitory concentration; nuclear magnetic resonance spectroscopy; pepper; phytotoxicity; pyrolysis gas chromatography; seed germination; waste management; water solubility
Abstract:
... The acknowledgement of bioactive functions of compost teas promotes the research on characteristics and potential application of these heterogeneous water-soluble extracts from recycled biomasses. In this work, compost teas were isolated from on-farm composts made with agro-industrial residues of artichoke, pepper and coffee husks with the aim to evaluate the structural-activity relationship of di ...
DOI:
10.1016/j.wasman.2020.11.013

11. Characterization of the selective binding of modified chitosan nanoparticles to Gram-negative bacteria strains

Author:
Boris Veltman; Dorin Harpaz; Yael Cohen; Elena Poverenov; Evgeni Eltzov
Source:
International journal of biological macromolecules 2022 v.194 pp. 666-675
ISSN:
0141-8130
Subject:
Bacillus licheniformis; Bacillus megaterium; Bacillus subtilis; Escherichia coli; Pectobacterium carotovorum; Pseudomonas aeruginosa; Salmonella; Serratia marcescens; antibacterial properties; bacterial growth; chitosan; fluorescence microscopy; polymers; viability assays
Abstract:
... Chitosan is a nature-sourced polysaccharide widely used in numerous applications. The antibacterial potential of chitosan has attracted researchers to further develop and utilize this polymer for the formation of biocompatible antibacterial agents for both the food and healthcare industries. The tested hypothesis in this study is that modified N-alkylaminated chitosan nanoparticles (CNPs) have sel ...
DOI:
10.1016/j.ijbiomac.2021.11.111

12. Colistimethate sodium-chitosan hydrogel for treating Gram-negative bacterial wound infections

Author:
Aathira Pradeep; Nivethitha Ashok; V. Priya; Anoop V. Pillai; Riju Ramachandran Menon; V. Anil Kumar; R. Jayakumar
Source:
International journal of biological macromolecules 2022 pp. -
ISSN:
0141-8130
Subject:
Escherichia coli; Gram-negative bacteria; Klebsiella pneumoniae; Pseudomonas aeruginosa; antibacterial properties; antibiotics; biofilm; chitosan; drug resistance; hydrogels; sodium; toxicity
Abstract:
... The drug resistance is higher among Gram-negative bacteria and demands the usage of strong antibiotics which can in turn result in systemic toxicity. In the treatment of the chronic wounds harboring pathogenic Gram-negative bacteria, the demand for an antimicrobial product that can be topically administered has been on the rise. In an effort to address the above issue, we have developed Colistimet ...
DOI:
10.1016/j.ijbiomac.2022.06.113

13. Designing a Multi-Epitope Vaccine against Chlamydia trachomatis by Employing Integrated Core Proteomics, Immuno-Informatics and In Silico Approaches

Author:
Sidra Aslam; Sajjad Ahmad; Fatima Noor; Usman Ali Ashfaq; Farah Shahid; Abdur Rehman; Muhammad Tahir ul Qamar; Eid A. Alatawi; Fahad M. Alshabrmi; Khaled S. Allemailem
Source:
Biology 2021 v.10 no.10 pp. -
ISSN:
2079-7737
Subject:
Chlamydia trachomatis; Escherichia coli; Gram-negative bacteria; T-lymphocytes; adjuvants; blindness; cervix; cholera toxin; computer simulation; epithelium; epitopes; humans; immune response; immunoinformatics; molecular dynamics; pathogens; pregnancy; protein synthesis; proteomics; rectum; urethra; vaccination; vaccines
Abstract:
... Chlamydia trachomatis, a Gram-negative bacterium that infects the rectum, urethra, congenital sites, and columnar epithelium of the cervix. It is a major cause of preventable blindness, ectopic pregnancy, and bacterial sexually transmitted infections worldwide. There is currently no licensed multi-epitope vaccination available for this pathogen. This study used core proteomics, immuno-informatics, ...
DOI:
10.3390/biology10100997

14. Enhancement of antibacterial activity of synthesized ligand‐free CdS nanocrystals due to silver doping

Author:
Pijush C. Dey; Birson Ingti; Amitabha Bhattacharjee; Manabendra D. Choudhury; Ratan Das; Siddhartha S. Nath
Source:
Journal of basic microbiology 2021 v.61 no.1 pp. 27-36
ISSN:
0233-111X
Subject:
Escherichia coli; Gram-negative bacteria; Staphylococcus aureus; X-ray diffraction; anti-infective agents; antibacterial properties; antibiotic resistance; cell walls; diffusion; exhibitions; nanocrystals; scanning electron microscopy; silver; transmission electron microscopy; zinc
Abstract:
... Recently, different nanocrystals have been reported to be the alternative, optimistic, and novel antimicrobial agent against the many antibiotic‐resistant bacteria. Here, ligand‐free CdS and Ag‐doped CdS (Ag/CdS) nanocrystals have been synthesized by chemical methods for the study of the antimicrobial activity on Escherichia coli and Staphylococcus aureus by Kirby–Bauer diffusion method to see the ...
DOI:
10.1002/jobm.202000296

15. Escherichia coli Nissle 1917 secondary metabolism: aryl polyene biosynthesis and phosphopantetheinyl transferase crosstalk

Author:
Courtney V. Jones; Brianna G. Jarboe; Haley M. Majer; Amy T. Ma; Joris Beld
Source:
Applied microbiology and biotechnology 2021 v.105 no.20 pp. 7785-7799
ISSN:
0175-7598
Subject:
Escherichia coli; Gram-negative bacteria; biofilm; biosynthesis; biotechnology; multigene family; polyketides; post-translational modification; probiotics; secondary metabolites
Abstract:
... Escherichia coli Nissle 1917 (EcN) is a Gram-negative bacterium that is used to treat inflammatory bowel diseases. The probiotic character of EcN is not well-understood, but its ability to produce secondary metabolites plays an important role in its activity. The EcN genome encodes for an aryl polyene (APE) biosynthetic gene cluster (BGC), and APE products have a role in biofilm formation. We show ...
DOI:
10.1007/s00253-021-11546-x

16. Escherichia coli and coliform contamination of a primary and secondary use waterway in Clarksville, Arkansas

Author:
Julio A. Molina-Pineda; Fernanda Hernandez Sanchez; David Thomas; Sean Coleman
Source:
Bios 2021 v.91 no.4 pp. 264-270
ISSN:
0005-3155
Subject:
Escherichia coli; Gram-negative bacteria; antibiotic resistance; chickens; ciprofloxacin; coliform bacteria; sulfamethoxazole; trimethoprim; Arkansas
Abstract:
... The existence of a live-chicken processing plant about 20 meters from a water source in Clarksville, Arkansas, raises concerns about bacteria contamination in the water. Over a period of three days, water samples from three different locations (upstream, across from the processing plant, and downstream) and for three different types of water at each location (running, stagnant in the middle, stagn ...
DOI:
10.1893/0005-3155-91.4.264

17. Escherichia coli response to subinhibitory concentrations of colistin: insights from a study of membrane dynamics and morphology

Author:
Ilanila Ilangumaran Ponmalar; Jitendriya Swain; Jaydeep K. Basu
Source:
Biomaterials science 2022 v.10 no.10 pp. 2609-2617
ISSN:
2047-4849
Subject:
Escherichia coli; Gram-negative bacteria; antibiotic resistance; biocompatible materials; biosynthesis; cell growth; cell membranes; colistin; diffusivity; fluorescence correlation spectroscopy; lipids; polypeptides; surface roughness
Abstract:
... Prevalence of widespread bacterial infections brings forth a critical need to understand the molecular mechanisms of the antibiotics as well as the bacterial response to those antibiotics. Improper use of antibiotics, which can be in sub-lethal concentrations is one among the multiple reasons for acquiring antibiotic resistance which makes it vital to understand the bacterial response towards sub- ...
DOI:
10.1039/d2bm00037g

18. Functional annotation unravels probiotic properties of a poultry isolate, Bacillus velezensis CGS1.1

Author:
Riteshri Soni; Hareshkumar Keharia; Christopher Dunlap; Ninad Pandit; Jayraj Doshi
Source:
Lebensmittel-Wissenschaft + Technologie 2022 v.153 pp. 112471
ISSN:
0023-6438
Subject:
Bacillus velezensis; Escherichia coli; Gram-negative bacteria; antibiotics; antimicrobial properties; biofilm; casein; cellulose; chickens; choloylglycine hydrolase; coculture; computer simulation; gastrointestinal system; genomics; hydrophobicity; liquids; pectins; phenotype; phytic acid; probiotics; sequence analysis; starch; toxins; tributyrin; virulence
Abstract:
... Probiotics are an eco-friendly and prospective substitute for antibiotic growth promoters. The present investigation aimed to dissect the probiotic attributes of a poultry isolate CGS1.1 by integrating genomics and phenotypic traits. The strain exhibited bile salt hydrolase activity and ∼73% survival in simulated gastrointestinal juices. It displayed notable aggregation, cell surface hydrophobicit ...
Handle:
10113/7505877
DOI:
10.1016/j.lwt.2021.112471

19. Immunoproteomic identification of OmpA with potential stimulation of serum‐specific antibody in Nile tilapia (Oreochromis niloticus) and its ability to protect against Edwardsiella ictaluri infection

Author:
Todsaporn Bunpote; Pakkakul Sangsuriya; Saengchan Senapin; Prapansak Srisapoome; Pongsak Khunrae; Sasimanas Unajak; Ha Thanh Dong; Triwit Rattanarojpong
Source:
Aquaculture research 2022 v.53 no.8 pp. 3214-3227
ISSN:
1355-557X
Subject:
Edwardsiella ictaluri; Escherichia coli; Gram-negative bacteria; Oreochromis niloticus; agglutination; antibodies; aquaculture; bacterial infections; blood serum; fish; immunization; molecular weight; outer membrane proteins; recombinant vaccines; research; solubilization; vaccine development
Abstract:
... Edwardsiella ictaluri is a Gram‐negative bacterium that has been reported to be disease causing in several economic fish including Nile tilapia. Here, immunoproteomic identification found that outer membrane protein A (OmpA) could react with serum from fish naturally infected with E. ictaluri. The expression and production of recombinant OmpA protein could be successfully conducted in Escherichia ...
DOI:
10.1111/are.15833

20. Mobile Colistin Resistance Gene mcr-1 Detected on an IncI2 Plasmid in Salmonella Typhimurium Sequence Type 19 from a Healthy Pig in South Korea

Author:
Dong Chan Moon; Su-Jeong Kim; Abraham Fikru Mechesso; Hee Young Kang; Hyun-Ju Song; Ji-Hyun Choi; Soon-Seek Yoon; Suk-Kyung Lim
Source:
Microorganisms 2021 v.9 no.2 pp. -
ISSN:
2076-2607
Subject:
Escherichia coli; Gram-negative bacteria; Salmonella Enteritidis; Salmonella Gallinarum; Salmonella Typhimurium; adhesion; chickens; colistin; macrophages; multiple drug resistance; plasmids; resistance genes; swine; virulence; China; South Korea
Abstract:
... Colistin is considered the last resort for the treatment of multi-drug resistant Gram-negative bacterial infections. We studied colistin resistance and the mcr-1 gene carriage in Salmonella isolates recovered from food animals in South Korea between 2010 and 2018. Colistin resistance was found in 277 isolates, predominantly in Salmonella Enteritidis (57.1%) and Salmonella Gallinarum (41.9%). Howev ...
DOI:
10.3390/microorganisms9020398

21. PEG-400 mediated synthesis, computational, antibacterial and antifungal studies of fluorinated pyrazolines

Author:
Sandip S. Pathade; Vishnu A. Adole; Bapu S. Jagdale
Source:
Current research in green and sustainable chemistry 2021 v.4 pp. 100172
ISSN:
2666-0865
Subject:
Escherichia coli; Gram-negative bacteria; Gram-positive bacteria; Lewis acids; absorption; antifungal properties; chalcones; chemical structure; density functional theory; energy; fungi; green chemistry; hardness; nitrogen; research
Abstract:
... The present study explores a detailed comprehensive study on the computational, antibacterial and antifungal studies of pyrazoline derivatives. Four chalcones and corresponding 5-aryl-3-(4-fluorophenyl)-1-phenyl-4,5-dihydro-1H-pyrazoles were synthesized in PEG-400 and the structure of the pyrazolines were affirmed by IR, ¹H NMR, and ¹³C NMR spectral techniques. The PEG-400 mediated synthesis of py ...
DOI:
10.1016/j.crgsc.2021.100172

22. Photodynamic inactivation of pathogenic Gram-negative and Gram-positive bacteria mediated by Si(IV) phthalocyanines bearing axial ammonium units

Author:
Sara R.D. Gamelas; Cátia Vieira; Maria Bartolomeu; Maria A.F. Faustino; João P.C. Tomé; Augusto C. Tomé; Adelaide Almeida; Leandro M.O. Lourenço
Source:
Journal of photochemistry and photobiology 2022 v.233 pp. 112502
ISSN:
1011-1344
Subject:
Escherichia coli; Gram-positive bacteria; Staphylococcus aureus; absorption; ammonium; antibiotics; irradiation; photobiology; photochemistry; viability; white light
Abstract:
... The photodynamic inactivation (PDI) of microorganisms has gained interest as an efficient option for conventional antibiotic treatments. Recently, Si(IV) phthalocyanines (SiPcs) have been highlighted as promising photosensitizers (PSs) to the PDI of microorganisms due to their remarkable absorption and emission features. To increase the potential of cationic SiPcs as PS drugs, one novel (1a) and t ...
DOI:
10.1016/j.jphotobiol.2022.112502

23. Pro- and anti-inflammatory responses of common carp Cyprinus carpio head kidney leukocytes to E.coli LPS as modified by different dietary plant oils

Author:
Thi Mai Nguyen; Syaghalirwa N.M. Mandiki; Jean M.A.J. Salomon; Joel Bondekwe Baruti; Nang Thu Tran Thi; Thu Hang Nguyen; Truong Quynh Nhu; Patrick Kestemont
Source:
Developmental and comparative immunology 2021 v.114 pp. 103828
ISSN:
0145-305X
Subject:
Cyprinus carpio; Escherichia coli; Gram-negative bacteria; arachidonic acid; cod liver oil; culture media; docosahexaenoic acid; endotoxins; fish; gene expression; immunocompetence; immunomodulation; inflammation; interleukin-1; interleukin-10; interleukin-6; interleukin-8; kidneys; linseed oil; lipopolysaccharides; metabolism; peroxidase; sesame oil; transcription factor NF-kappa B
Abstract:
... Dietary lipids could modify fatty acid (FA) composition in fish tissues. Long chain polyunsaturated fatty acids (LC-PUFAs) such as arachidonic acid (ARA), eicosapentaneoic acid (EPA) and docosahexaenoic acid (DHA) are able to modulate the immune status in fish through an inflammatory process but their availability may be limited when fish are exclusively fed plant oils. This study was conducted to ...
DOI:
10.1016/j.dci.2020.103828

24. Remediation of surface water contaminated by pathogenic microorganisms using calcium peroxide: Matrix effect, micro-mechanisms and morphological-physiological changes

Author:
Wenhui Qiu; Honghong Chen; Shuwen Zhang; Ying Xiong; Ming Zheng; Tingting Zhu; Minkyu Park; Jason T. Magnuson; Chunmiao Zheng; Mohamed Gamal El-Din
Source:
Water research 2022 v.211 pp. 118074
ISSN:
0043-1354
Subject:
Escherichia coli; Gram-negative bacteria; Gram-positive bacteria; Staphylococcus aureus; bacteriophages; calcium peroxide; hydrogen peroxide; models; oxygen; pathogens; remediation; research; surface water
Abstract:
... Calcium peroxide (CaO₂), a common solid peroxide, has been increasingly used in contaminated site remediation due to its ability to release oxygen (O₂) and hydrogen peroxide (H₂O₂) and its environmental friendliness. Our present study is first to explore micromechnisms of CaO₂ to efficaciously inactivate pathogen indicators including gram-negative bacterium of Escherichia coli (E. coli), gram-posi ...
DOI:
10.1016/j.watres.2022.118074

25. Repurposing Non-Antibiotic Drugs Auranofin and Pentamidine in Combination to Combat Multidrug-Resistant Gram-Negative Bacteria

Author:
Yingxiao Yu; Huimin Zhao; Jiayin Lin; Zongshao Li; Guobao Tian; Yi Yan Yang; Peiyan Yuan; Xin Ding
Source:
International journal of antimicrobial agents 2022 v.59 no.5 pp. 106582
ISSN:
0924-8579
Subject:
Escherichia coli; Gram-negative bacteria; Klebsiella pneumoniae; antibacterial properties; atomic absorption spectrometry; colistin; fluorescence; health services; minimum inhibitory concentration; multiple drug resistance; rheumatoid arthritis
Abstract:
... Infections caused by multidrug-resistant (MDR) bacteria, especially MDR Gram-negative bacteria, have posed a great challenge to healthcare systems globally. To address the shortage of effective antibiotics against MDR Gram-negative bacterial infections, two non-antibiotic drugs – auranofin (rheumatoid arthritis drug) and pentamidine (antiprotozoal drug) – are being repurposed to treat MDR Gram-neg ...
DOI:
10.1016/j.ijantimicag.2022.106582

26. SELEX against whole-cell bacteria resulted in lipopolysaccharide binding aptamers

Author:
Deniz Yılmaz; Tuğdem Muslu; Ayhan Parlar; Hasan Kurt; Meral Yüce
Source:
Journal of biotechnology 2022 v.354 pp. 10-20
ISSN:
0168-1656
Subject:
Escherichia coli; Gram-negative bacteria; Gram-positive bacteria; Listeria monocytogenes; biotechnology; flow cytometry; fluorescence emission spectroscopy; inflammation; lipopolysaccharides; macrophages; oligonucleotides; systematic evolution of ligands by exponential enrichment; therapeutics
Abstract:
... Nucleic acid aptamers are target-specific oligonucleotides selected from combinatorial libraries through an iterative in vitro screening process known as Systemic Evolution of Ligands by Exponential Enrichment (SELEX). In this report, the selection of bacteria differentiating ssDNA aptamer candidates from a combinatorial library through the whole-cell SELEX method was performed. The enriched SELEX ...
DOI:
10.1016/j.jbiotec.2022.06.001

27. The Epidemiology of Meningitis in Infants under 90 Days of Age in a Large Pediatric Hospital

Author:
Timothy A. Erickson; Flor M. Munoz; Catherine L. Troisi; Melissa S. Nolan; Rodrigo Hasbun; Eric L. Brown; Kristy O. Murray
Source:
Microorganisms 2021 v.9 no.3 pp. -
ISSN:
2076-2607
Subject:
Enterovirus; Escherichia coli; Gram-negative bacteria; Streptococcus agalactiae; ampicillin; cephalosporins; disease prevention; drug therapy; epidemiology; etiology; health services; hospitals; meningitis; methicillin-resistant Staphylococcus aureus; morbidity; mortality; premature birth; Texas
Abstract:
... Background: Meningitis is associated with substantial morbidity and mortality, particularly in the first three months of life. Methods: We conducted a retrospective review of patients <90 days of age with meningitis at Texas Children’s Hospital from 2010–2017. Cases were confirmed using the National Healthcare Safety Network (NHSN) definition of meningitis. Results: Among 694 infants with meningit ...
DOI:
10.3390/microorganisms9030526

28. The effect of piscidin antimicrobial peptides on the formation of Gram‐negative bacterial biofilms

Author:
Benjamin S. Prior; Miles D. Lange; Scott A. Salger; Benjamin J. Reading; Eric Peatman; Benjamin H. Beck
Source:
Journal of fish diseases 2022 v.45 no.1 pp. 99-105
ISSN:
0140-7775
Subject:
Aeromonas hydrophila; Escherichia coli; Flavobacterium columnare; Gram-negative bacteria; Gram-positive bacteria; antimicrobial peptides; antimicrobial properties; biofilm; fish; growth retardation; hybrids; innate immunity
Abstract:
... Fish‐derived antimicrobial peptides are an important part of the innate immune system due to their potent antimicrobial properties. Piscidins are a class of antimicrobial peptides first described in hybrid striped bass (Morone chrysops x Morone saxatilis) but have also been identified in many other fish species. Previous work demonstrated the broad antimicrobial activity of piscidins against Gram‐ ...
Handle:
10113/7594097
DOI:
10.1111/jfd.13540

29. Use of Recombinant Escherichia coli Strains in Immunofluorescence Assays for Melioidosis Diagnosis

Author:
Kanoknart Lantong; Jirarat Songsri; Sueptrakool Wisessombat; Wanida Mala; Warinda Prommachote; Wilaiwan Senghoi; Manas Kotepui; Jedsada Kaewrakmuk; Treenate Jiranantasak; Apichai Tuanyok; Wiyada Kwanhian Klangbud
Source:
Pathogens 2021 v.10 no.5 pp. -
ISSN:
2076-0817
Subject:
Burkholderia pseudomallei; Escherichia coli; Gram-negative bacteria; blood serum; cross reaction; fluorescent antibody technique; hemagglutination; immunoglobulin G; melioidosis; point-of-care testing
Abstract:
... Burkholderia pseudomallei is a Gram-negative bacterium and the causative agent of melioidosis in humans and animals in the tropics. The clinical manifestations of melioidosis are diverse, ranging from localized infections to whole-body sepsis. The effective serological method is crucial for the point-of-care diagnosis of melioidosis. The aim of this study was to develop indirect immunofluorescence ...
DOI:
10.3390/pathogens10050559

30. Xanthogranulomatous Pyelonephritis Caused by Stenotrophomonas maltophilia—The First Case Report and Brief Review

Author:
Răzvan-Cosmin Petca; Răzvan-Alexandru Dănău; Răzvan-Ionuț Popescu; Daniel Damian; Cristian Mareș; Aida Petca; Viorel Jinga
Source:
Pathogens 2022 v.11 no.1 pp. -
ISSN:
2076-0817
Subject:
Escherichia coli; Gram-negative bacteria; Proteus mirabilis; adults; antibiotic resistance; case studies; females; histopathology; levofloxacin; pathogens; patients; pyelonephritis; renal calculi; renal function; risk; surgery; vancomycin
Abstract:
... Xanthogranulomatous pyelonephritis (XGP) represents a rare and severe pathology secondary to chronic urinary obstruction and recurrent infections. Commonly, this condition leads to loss of kidney function, and frequently, surgical approach is the only optional treatment. Proteus mirabilis and Escherichia coli are the most frequent pathogens associated with XGP. The actual changes in the pathogen’s ...
DOI:
10.3390/pathogens11010081

31. Paenibacillus alvei MP1 as a Producer of the Proteinaceous Compound with Activity against Important Human Pathogens, Including Staphylococcus aureus and Listeria monocytogenes

Author:
Magdalena Pajor; Zirui Ray Xiong; Randy W. Worobo; Piotr Szweda
Source:
Pathogens 2020 v.9 no.5 pp. -
ISSN:
2076-0817
Subject:
Escherichia coli; Gram-negative bacteria; Listeria monocytogenes; Paenibacillus alvei; Staphylococcus aureus; ammonium sulfate; animal pathogens; antibiotic resistance; antibiotics; antimicrobial properties; buckwheat honey; heat stability; heat treatment; mass spectrometry; metabolites; peptides; proteinases; research; virulent strains
Abstract:
... An emerging need for new classes of antibiotics is, on the one hand, evident as antimicrobial resistance continues to rise. On the other hand, the awareness of the pros and cons of chemically synthesized compounds’ extensive use leads to a search for new metabolites in already known reservoirs. Previous research showed that Paenibacillus strain (P. alvei MP1) recovered from a b ...
DOI:
10.3390/pathogens9050319

32. A Comparative Antibacterial, Antioxidant, and Antineoplastic Potential of Rauwolfia serpentina (L.) Leaf Extract with Its Biologically Synthesized Gold Nanoparticles (R-AuNPs)

Author:
Mohammad Y. Alshahrani; Zeeshan Rafi; Nadiyah M. Alabdallah; Ambreen Shoaib; Irfan Ahmad; Mohammed Asiri; Gaffar Sarwar Zaman; Shadma Wahab; Mohd Saeed; Salman Khan
Source:
Plants 2021 v.10 no.11 pp. -
ISSN:
2223-7747
Subject:
Bacillus subtilis; Escherichia coli; Gram-negative bacteria; Proteus vulgaris; Rauvolfia serpentina; Staphylococcus aureus; Streptococcus pyogenes; amoxicillin; antibacterial properties; antineoplastic activity; antioxidant activity; antioxidants; cell lines; encapsulation; humans; inhibitory concentration 50; leaf extracts; medicinal plants; nanogold; transmission electron microscopy; ultraviolet-visible spectroscopy; uterine cervical neoplasms; zeta potential
Abstract:
... Rauwolfia serpentina (R. serpentina), belonging to the family Apocynaceae, is a renowned medicinal herb for its different pharmacological activities such as antibacterial, antifungal, anti-inflammatory, and antiproliferative characteristics. This study has done a comparative assessment of the antibacterial, antioxidant, and anti-cancer activity of R. serpentina aqueous leaf extract (RSALE) with en ...
DOI:
10.3390/plants10112278

33. A Novel Weissella cibaria Strain UTNGt21O Isolated from Wild Solanum quitoense Fruit: Genome Sequence and Characterization of a Peptide with Highly Inhibitory Potential toward Gram-Negative Bacteria

Author:
Gabriela N. Tenea; Pamela Hurtado; Clara Ortega
Source:
Foods 2020 v.9 no.9 pp. -
ISSN:
2304-8158
Subject:
EDTA (chelating agent); Escherichia coli; Gram-negative bacteria; Salmonella; Solanum quitoense; Weissella cibaria; antibacterial properties; bacteriocins; cell death; cells; chelating agents; databases; foods; fruits; genome; genome mining; length; nucleotide sequences; peptides; permeability; sequence homology; shape; shrubs; strains; transmission electron microscopy
Abstract:
... A novel Weissella cibaria strain UTNGt21O from the fruit of the Solanum quitoense (naranjilla) shrub produces a peptide that inhibits the growth of both Salmonella enterica subsp. enterica ATCC51741 and Escherichia coli ATCC25922 at different stages. A total of 31 contigs were assembled, with a total length of 1,924,087 bases, 20 contig hits match the core genome of different groups within Weissel ...
DOI:
10.3390/foods9091242

34. A Spodoptera exigua serpin is involved in the immunity of hemolymph induced by Heliothis virescens ascovirus 3h

Author:
Zi-Qi Li; Ni Li; Ying Zhao; Guo-Hua Huang
Source:
Journal of Asia-Pacific entomology 2021 v.24 no.1 pp. 120-128
ISSN:
1226-8615
Subject:
Autographa californica; Bacillus thuringiensis; Baculoviridae; Escherichia coli; Gram-negative bacteria; Gram-positive bacteria; Heliothis virescens ascovirus 3a; Spodoptera exigua; eggs; entomology; exhibitions; fat body; genes; head; hemolymph; infection; innate immunity; insects; instars; larvae; melanization; midgut; proteinases; proteins; serine proteinase inhibitors; serpins; virus replication
Abstract:
... Serine protease inhibitors (serpins) are a broadly distributed protease superfamily in various organisms, which participate in the negative regulation of melanization in insects. Our pervious study demonstrated that induced melanization by Heliothis virescens ascovirus 3h is helpful for HvAV-3h viral replication. In this study, the serpin-2.1 like gene from Spodoptera exigua (Seserpin-2.1 like) wh ...
DOI:
10.1016/j.aspen.2020.12.001

35. A tandem-repeat galectin-1 from Apostichopus japonicus with broad PAMP recognition pattern and antibacterial activity

Author:
Chi Zhang; Zhuang Xue; Zichao Yu; Hui Wang; Yu Liu; Huan Li; Lingling Wang; Chenghua Li; Linsheng Song
Source:
Fish & shellfish immunology 2020 v.99 pp. 167-175
ISSN:
1050-4648
Subject:
Apostichopus japonicus; Escherichia coli; Gram-negative bacteria; Gram-positive bacteria; Komagataella pastoris; Mesocentrotus; Micrococcus luteus; Paracentrotus lividus; Vibrio splendidus; amino acid sequences; amino acids; antibacterial properties; carbohydrate binding; coelomocytes; digestive system; fish; fungi; galactose; galectins; gene expression; inflammation; integument; invertebrates; lipopolysaccharides; mannose; messenger RNA; muscles; open reading frames; pathogens; peptidoglycans; phylogeny; polypeptides; recombinant proteins; respiratory system
Abstract:
... Galectins belong to the family of carbohydrate-binding proteins and play major roles in the immune and inflammatory responses of both vertebrates and invertebrates. In the present study, one novel galectin-1 protein named AjGal-1 was identified from Apostichopus japonicas with an open reading frame of 1179 bp encoding a polypeptide of 392 amino acids. The deduced amino acids sequence of AjGal-1 co ...
DOI:
10.1016/j.fsi.2020.02.011

36. An Escherichia coli isolate from hospital sewage carries blaNDM-1 and blaoxa-10

Author:
Zimeng Hu; Weiye Chen; Genglin Guo; Chen Dong; Yun Shen; Si Qin; Long Chen; Wei Zhang
Source:
Archives of microbiology 2021 v.203 no.7 pp. 4427-4432
ISSN:
0302-8933
Subject:
Escherichia coli; Gram-negative bacteria; O-antigens; beta-lactamase; carbapenems; hospitals; multiple drug resistance; prediction; serotypes; sewage
Abstract:
... Carbapenems, as the “last line of defense” against Gram-negative bacteria, are increasingly being challenged by drug-resistant bacteria, especially Enterobacteriaceae. In this study, a carbapenem-resistant Gram-negative bacterium, named AH001, was isolated from hospital sewage, and a modified Hodge test confirmed that this bacterium can produce carbapenemase. Further analysis revealed that this ba ...
DOI:
10.1007/s00203-021-02431-2

37. Antibacterial Activities of Acetic Acid against Major and Minor Pathogens Isolated from Mastitis in Dairy Cows

Author:
Noppason Pangprasit; Anyaphat Srithanasuwan; Witaya Suriyasathaporn; Surachai Pikulkaew; John K. Bernard; Wasana Chaisri
Source:
Pathogens 2020 v.9 no.11 pp. -
ISSN:
2076-0817
Subject:
Escherichia coli; Gram-negative bacteria; Staphylococcus chromogenes; acetic acid; agar; antibacterial properties; bovine mastitis; coagulase negative staphylococci; culture media; dairy cows; diffusion; dodecanoic acid; lactic acid; minimum inhibitory concentration; pathogens; screening
Abstract:
... The present study evaluated the antimicrobial activities of acetic acid against bovine mastitis pathogens compared to lactic acid and lauric and caprylic saturated fatty acids. Eleven mastitis pathogens were isolated from sub-clinical and clinical bovine mastitis cases for the study. An initial screening of their antibacterial activities by agar well diffusion method was performed. The minimum inh ...
DOI:
10.3390/pathogens9110961

38. Antibacterial Potential and Apoptosis Induction by Pigments from the Endophyte Burkholderia sp. WYAT7

Author:
A. Ashitha; E. K. Radhakrishnan; Jyothis Mathew
Source:
Current microbiology 2020 v.77 no.9 pp. 2475-2485
ISSN:
0343-8651
Subject:
Acinetobacter baumannii; Artemisia; Bacillus subtilis; Burkholderia; DNA fragmentation; Escherichia coli; Gram-negative bacteria; Klebsiella pneumoniae; Pseudomonas aeruginosa; Salmonella Typhi; Staphylococcus aureus; acridine orange; antibacterial properties; antineoplastic activity; apoptosis; cancer therapy; caspase-9; cytotoxicity; endophytes; ethidium; medicinal plants; melanoma; minimum inhibitory concentration
Abstract:
... Pigment from the endophyte Burkholderia sp. WYAT7 isolated from the medicinal plant Artemisia nilagirica (Clarke) Pamp. was extracted. The antibacterial efficacy of the crude pigment Y was assessed as a source of antibiotic against both Gram-positive and Gram-negative bacterial pathogens. The pigment Y exhibited a significant level of antibacterial activity against the tested pathogens Salmonella ...
DOI:
10.1007/s00284-020-02013-3

39. Antibacterial action of peptide F1 against colistin resistance E. coli SHP45 (mcr-1)

Author:
Qun Wang; Jianyin Miao; Konglong Feng; Jianhua Liu; Wei Li; Jun Li; Zhijie Yang; Yong Cao
Source:
Food & function 2020 v.11 no.11 pp. 10231-10241
ISSN:
2042-650X
Subject:
Escherichia coli; Gram-negative bacteria; Gram-positive bacteria; Staphylococcus aureus; antibacterial properties; antimicrobial peptides; colicins; colistin; drug resistance; kefir; lipid A; phospholipids; research; virulent strains
Abstract:
... The emergence of the plasmid-mediated colistin resistance mechanism (mcr-1) makes bacterial resistance to colistin increasingly serious. This mcr-1 mediated bacterial resistance to colicin is conferred primarily through modification of lipid A in lipopolysaccharides (LPS). In our previous research, antimicrobial peptide F1 was derived from Tibetan kefir and has been shown to effectively inhibit th ...
DOI:
10.1039/d0fo01923b

40. Antibacterial activity and HPLC analysis of extracts from Mediterranean brown algae

Author:
Antonella Maggio; Rosa Alduina; Elisabetta Oddo; Antonio Palumbo Piccionello; Anna Maria Mannino
Source:
Plant biosystems 2022 v.156 no.1 pp. 43-50
ISSN:
1724-5575
Subject:
Cystoseira; Dictyopteris; Escherichia coli; Gram-negative bacteria; Kocuria rhizophila; Padina pavonica; Staphylococcus aureus; antibacterial properties; herbivores; isomers; phenol; thallus
Abstract:
... The antibacterial activity of methanolic extracts of eight Mediterranean brown algae belonging to the genera Cystoseira sensu lato, Dictyopteris and Padina was investigated. Extracts from Sargassaceae showed antibacterial activity. Specifically, Carpodesmia crinita and Carpodesmia brachycarpa extracts inhibited the growth of the Gram-positive strain Kocuria rhizophila whereas Cystoseira compressa ...
DOI:
10.1080/11263504.2020.1829737

41. Antibacterial activity of an anti-lipopolysaccharide factor (MjALF-D) identified from kuruma prawn (Marsupenaeus japonicus)

Author:
Heqian Zhang; Jinbin Zheng; Wenzhi Cheng; Yong Mao; Xiangyong Yu
Source:
Fish & shellfish immunology 2022 pp. -
ISSN:
1050-4648
Subject:
Escherichia coli; Gram-negative bacteria; Gram-positive bacteria; Marsupenaeus japonicus; Micrococcus luteus; Photobacterium damselae; antibacterial properties; antimicrobial peptides; fish; growth retardation; immunity; kinetics; liquids; minimum inhibitory concentration; shellfish; shrimp; transmission electron microscopy
Abstract:
... Antimicrobial peptides (AMPs) play important roles in host innate immune systems. Anti-lipopolysaccharide factor (ALF), which is a primary AMP in crustaceans, is active against bacteria, fungi and some viruses. MjALF-D, an anionic peptide, is a group D ALF isolated from Marsupenaeus japonicus. In the present study, a series of experiments were performed to study its antibacterial spectrum and furt ...
DOI:
10.1016/j.fsi.2022.06.036

42. Antibacterial and antioxidant activity of naphthofuranquinones from the twigs of tropical mangrove Avicennia officinalis

Author:
Suvik Assaw; Muhammad Isyraq Hazim Mohd Amir; Tyng Tyng Khaw; Kamariah Bakar; Siti Aisha Mohd Radzi; Noor Wini Mazlan
Source:
Natural product research 2020 v.34 no.16 pp. 2403-2406
ISSN:
1478-6427
Subject:
2,2-diphenyl-1-picrylhydrazyl; Avicennia officinalis; Bacillus subtilis; Enterobacter cloacae; Escherichia coli; Gram-negative bacteria; Gram-positive bacteria; Staphylococcus aureus; Staphylococcus epidermidis; Vibrio cholerae; antibacterial properties; antioxidant activity; antioxidants; bioactive compounds; branches; chemical structure; chromatography; fractionation; mangroves (trees); metabolites; minimum inhibitory concentration; nuclear magnetic resonance spectroscopy; quinones; Malaysia
Abstract:
... Mangrove plants are endowed with various biologically active compounds which have potent antibacterial and antioxidant properties. In present study, a bioactivity-guided fractionation for antibacterial and antioxidant active metabolites from the twigs of Avicennia officinalis collected from Kuala Selangor Nature Park, Selangor, Malaysia gave 13 major fractions. The antibacterial activity of A. off ...
DOI:
10.1080/14786419.2018.1538220

43. Antibacterial potential of Ni-doped zinc oxide nanostructure: comparatively more effective against Gram-negative bacteria including multi-drug resistant strains

Author:
Atanu Naskar; Sohee Lee; Kwang-sun Kim
Source:
RSC advances 2020 v.10 no.3 pp. 1232-1242
ISSN:
2046-2069
Subject:
Acinetobacter baumannii; Escherichia coli; Gram-negative bacteria; Staphylococcus aureus; Staphylococcus epidermidis; X-ray diffraction; X-ray photoelectron spectroscopy; antibacterial properties; antibiotics; genes; minimum inhibitory concentration; multiple drug resistance; nanomaterials; nickel; public health; reactive oxygen species; scanning electron microscopy; transmission electron microscopy; zinc; zinc oxide
Abstract:
... Infections by multidrug-resistant (MDR) bacteria are one of the most threatening concerns for public health. For this purpose, nanomaterials have emerged with great potential for antibacterial activity. In this paper, we report the synthesis of new Ni²⁺-doped zinc oxide (Ni-ZnO or NZO) nanostructures as targeted antibacterial agents for Gram-negative bacteria. A one-pot low-temperature solution pr ...
DOI:
10.1039/c9ra09512h

44. Antifouling, antibacterial and non-cytotoxic transparent cellulose membrane with grafted zwitterion and quaternary ammonium copolymers

Author:
Chen Xu; Jungang Jiang; Hale Oguzlu; Yi Zheng; Feng Jiang
Source:
Carbohydrate polymers 2020 v.250 pp. 116960
ISSN:
0144-8617
Subject:
Escherichia coli; Gram-negative bacteria; Staphylococcus aureus; adsorption; antibacterial properties; bacterial adhesion; biocompatibility; cell viability; cellulose; chlorides; composite polymers; hydrophilicity; mechanical properties; polymerization; sulfobetaine; zwitterions
Abstract:
... Copolymer brushes with different ratios of sulfobetaine methacrylate (SBMA) and [2-(Acryloyloxy)ethyl]trimethylammonium chloride (DAC) were grafted from transparent cellulose membrane (CM) via surface-initiated atom transfer radical polymerization (SI-ATRP) method for improving its antifouling and antibacterial performance. Surface concentrated copolymer grafting on the cellulose membranes can be ...
DOI:
10.1016/j.carbpol.2020.116960

45. Antimicrobial activity of spices essential oils and its effectiveness on mature biofilms of human pathogens

Author:
Carla Condò; Immacolata Anacarso; Carla Sabia; Ramona Iseppi; Igor Anfelli; Luca Forti; Simona de Niederhäusern; Moreno Bondi; Patrizia Messi
Source:
Natural product research 2020 v.34 no.4 pp. 567-574
ISSN:
1478-6427
Subject:
Aeromonas hydrophila; Candida albicans; Cinnamomum verum; Cuminum cyminum; Enterococcus faecalis; Escherichia coli; Gram-negative bacteria; Klebsiella pneumoniae; Pimpinella anisum; Proteus mirabilis; Pseudomonas aeruginosa; Staphylococcus aureus; Staphylococcus epidermidis; Streptococcus pyogenes; Syzygium aromaticum; animal pathogens; antibacterial properties; biofilm; cinnamon; cloves; essential oils; minimum inhibitory concentration; oils
Abstract:
... The antibacterial activity of Pimpinella anisum L., Cinnamomum zeylanicum, Syzygium aromaticum, and Cuminum cyminum L. essential oils (EOs) against some common pathogenic microorganisms (Staphylococcus aureus ATCC 6538, Staphylococcus epidermidis ATCC 14990, Enterococcus faecalis ATCC 29212, Streptococcus pyogenes ATCC 1915, Escherichia coli ATCC 8739, Pseudomonas aeruginosa ATCC 27853, Aeromonas ...
DOI:
10.1080/14786419.2018.1490904

46. Antimicrobial activity of topical dyes used in clinical veterinary ophthalmology

Author:
Thiago Alegre Coelho Ferreira; José Francisco Ghignatti Warth; Lucianne Leigue dos Santos; Bret A. Moore; Fabiano Montiani‐Ferreira
Source:
Veterinary ophthalmology 2020 v.23 no.3 pp. 497-505
ISSN:
1463-5216
Subject:
Escherichia coli; Gram-negative bacteria; Pseudomonas aeruginosa; Staphylococcus aureus; Staphylococcus pseudintermedius; Streptococcus; antibacterial properties; bacterial growth; disk diffusion antimicrobial test; fluorescein; ophthalmology; preservatives
Abstract:
... OBJECTIVE: To evaluate in vitro the antibacterial effects of fluorescein, rose bengal, and lissamine green topical ophthalmic dyes against selected Gram‐positive and Gram‐negative bacteria, and to evaluate whether preserved or preservative‐free fluorescein solutions are able to inhibit or potentiate bacterial growth. PROCEDURES: Susceptibility testing was performed using the Kirby‐Bauer disk diffu ...
DOI:
10.1111/vop.12746

47. Antimicrobial effect of Sargassum plagiophyllum mediated gold nanoparticles on Escherichia coli and Salmonella typhi

Author:
T. Stalin Dhas; P. Sowmiya; V. Ganesh Kumar; M. Ravi; K. Suthindhiran; J. Francis Borgio; G. Narendrakumar; V. Ramesh Kumar; V. Karthick; C.M. Vineeth Kumar
Source:
Biocatalysis and agricultural biotechnology 2020 v.26 pp. 101627
ISSN:
1878-8181
Subject:
Escherichia coli; Gram-negative bacteria; Salmonella Typhi; Sargassum; antibacterial properties; antioxidant activity; atomic force microscopy; biosynthesis; cell viability; fluorescence microscopy; macroalgae; medicinal properties; nanogold; nanoparticles; particle size; plants (botany); scanning electron microscopy
Abstract:
... Biosynthesis of gold nanoparticles has been carried out with various sources like bacteria, plants and algae. Seaweeds have high nutritional and medicinal properties. Sargassum plagiophyllum is seaweed that has excellent antioxidant activity. This study aims at evaluating the antimicrobial activity of biosynthesized gold nanoparticles from the extract of S. plagiophyllum. The synthesised nanoparti ...
DOI:
10.1016/j.bcab.2020.101627

48. Antimicrobial packaging efficiency of ZnO-SiO2 nanocomposites infused into PVA/CS film for enhancing the shelf life of food products

Author:
Nasser A. Al-Tayyar; Ahmed M. Youssef; Rashad R. Al-Hindi
Source:
Food packaging and shelf life 2020 v.25 pp. 100523
ISSN:
2214-2894
Subject:
Escherichia coli; Fourier transform infrared spectroscopy; Gram-negative bacteria; Gram-positive bacteria; Staphylococcus aureus; X-ray diffraction; antibacterial properties; antimicrobial packaging; breads; chitosan; contact angle; ecological footprint; food packaging; food pathogens; mechanical properties; nanocomposites; nanoparticles; packaging materials; permeability; polyvinyl alcohol; scanning electron microscopy; shelf life; silica; water vapor; zinc oxide; Iraq
Abstract:
... In the current work, antimicrobial bionanocomposite films were fabricated based on chitosan (CS), poly (vinyl alcohol) (PVA) and nanocomposites comprised of silicon dioxide nanoparticles doped with zinc oxide nanoparticles (ZnO-SiO₂). The ZnO-SiO₂ nanocomposite was prepared and incorporated into a PVA/CS blend at different ratios (0.50, 1.0, 3.0 and 5.0 %) to generate the PVA/CS/ZnO-SiO₂ bionanoco ...
DOI:
10.1016/j.fpsl.2020.100523

49. Antimicrobial resistance of bacterial pathogens isolated from canine urinary tract infections

Author:
Zhuoling Yu; Yao Wang; Yanyun Chen; Min Huang; Yang Wang; Zhangqi Shen; Zhaofei Xia; Gebin Li
Source:
Veterinary microbiology 2020 v.241 pp. 108540
ISSN:
0378-1135
Subject:
Escherichia coli; Gram-negative bacteria; Gram-positive bacteria; Klebsiella; Staphylococcus; amikacin; ampicillin; antibiotic resistance; ceftazidime; dog diseases; dogs; erythromycin; females; florfenicol; hospitals; males; meropenem; multiple drug resistance; nitrofurantoin; pathogens; polymyxins; pulsed-field gel electrophoresis; therapeutics; urinary tract diseases; vancomycin; China
Abstract:
... Urinary tract infections (UTIs), many of which are caused by bacterial pathogens, are some of the most common infections in dogs. To effectively treat UTIs, it is important to identify the predominant bacterial pathogens and their susceptibility to antimicrobial agents. In this study, we collected 326 samples from cases with UTIs or other urinary system diseases at the China Agricultural Universit ...
DOI:
10.1016/j.vetmic.2019.108540

50. Antioxidant/Antimicrobial Film Based on Carboxymethyl Cellulose/Gelatin/TiO2–Ag Nano-Composite

Author:
Sajad Pirsa; Elnaz Farshchi; Leila Roufegarinejad
Source:
Journal of polymers and the environment 2020 v.28 no.12 pp. 3154-3163
ISSN:
1566-2543
Subject:
Escherichia coli; Gram-negative bacteria; Staphylococcus aureus; antimicrobial properties; antioxidant activity; antioxidants; biodegradability; carboxymethylcellulose; colorimetry; design; environment; food packaging; gelatin; nanocomposites; nanoparticles; plastics; scanning electron microscopy; silver; titanium dioxide
Abstract:
... Due to the environmental problems caused by the use of synthetic plastics in food packaging, it is necessary to replace them with biodegradable films. In this study, carboxyl methyl cellulose/gelatin composite modified with TiO₂–Ag nanoparticles (CMC/Gel/TiO₂–Ag) was prepared and its antioxidant, antimicrobial, mechanical, colorimetric and morphological characteristics were investigated. To evalua ...
DOI:
10.1007/s10924-020-01846-0