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Tran PL, Presson CL, Kashem MNH, Li W, Reid TW, de Riese WTW. Complete Growth Inhibition of Pseudomonas aeruginosa by Organo-Selenium-Incorporated Urinary Catheter Material. Antibiotics (Basel) 2024; 13:736. [PMID: 39200036 PMCID: PMC11350670 DOI: 10.3390/antibiotics13080736] [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: 06/10/2024] [Revised: 07/25/2024] [Accepted: 08/02/2024] [Indexed: 09/01/2024] Open
Abstract
To further investigate the inhibition of Pseudomonas aeruginosa's in vitro growth and biofilm formation by an organo-selenium-incorporated polyurethane (PU) catheter material. P. aeruginosa, Staphylococcus aureus, and Candida albicans were incubated in vitro with organo-selenium and control polyurethane catheter materials in the presence of glutathione. Growth was evaluated by a colony-forming-unit (CFU) count and visualized with confocal laser scanning microscopy. Two different PU catheter materials were used. Using tin-catalyzed PU catheter material, complete inhibition of S. aureus was seen at 1% selenium (Se), whereas no inhibition was seen for P. aeruginosa at up to 3.0% Se. Whereas, using a thermoplastic PU catheter material, 1.5% Se and 2% Se organo-selenium caused several logs of growth inhibition of P. aeruginosa, and 2.5% selenium, incorporation showed complete inhibition (8 logs). Samples with lower than 1.5% selenium did not show adequate growth inhibition for P. aeruginosa. Similar in vitro growth inhibition was achieved against a multidrug-resistant C. albicans strain. It was concluded that optimal inhibition of P. aeruginosa in vitro growth and biofilm formation occurs with 2.5% selenium incorporated as organo-selenium in a thermoplastic PU catheter material. These results suggest that reduced incidence of CAUTIs (catheter associated urinary tract infections) with P. aeruginosa and other bacteria and fungi can be achieved by using organo-selenium-incorporated catheters.
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Affiliation(s)
- Phat L. Tran
- Department of Ophthalmology and Visual Sciences, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA;
| | - Caroline L. Presson
- Department of Urology, School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA; (C.L.P.); (W.T.W.d.R.)
| | - Md Nayeem Hasan Kashem
- Department of Chemical Engineering, Texas Tech University, Lubbock, TX 79409, USA; (M.N.H.K.); (W.L.)
| | - Wei Li
- Department of Chemical Engineering, Texas Tech University, Lubbock, TX 79409, USA; (M.N.H.K.); (W.L.)
| | - Ted W. Reid
- Department of Ophthalmology and Visual Sciences, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA;
| | - Werner T. W. de Riese
- Department of Urology, School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA; (C.L.P.); (W.T.W.d.R.)
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Celebı D, Celebı O, Aydin E, Baser S, Güler MC, Yildirim S, Taghizadehghalehjoughi A. Boron Compound-Based Treatments Against Multidrug-Resistant Bacterial Infections in Lung Cancer In Vitro Model. Biol Trace Elem Res 2024; 202:145-160. [PMID: 37884681 DOI: 10.1007/s12011-023-03912-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 10/08/2023] [Indexed: 10/28/2023]
Abstract
Multidrug-resistant bacteria is one of the most important public health problems. Increasing rates of antibacterial resistance also affect the outcomes of medical approaches. Cancer treatment because of immune system deficiency (chemotherapy or steroids usage) commonly can cause infection. Lung cancer is the dominant cause of cancer-related deaths, and infection is the most common cause of death among those patients. In this study, it was aimed to determine the antimicrobial, antibiofilm, and anticancer activity of boron compounds. A549 lung cancer cell line was infected with Acinetobacter baumannii (ATCC 19606), Klebsiella pneumoniae (ATCC 700603), and Pseudomonas aeruginosa (ATCC 27853). In order to determine the fractional inhibitory concentration (FIC) index, antibiotics and boron compound concentrations prepared according to the minimum inhibitory concentration (MIC) values were determined by the checkerboard method. In our study results, the antibiofilm activity was an average of 46% in A. baumannii+boron compounds, 45% in P. aeruginosa+boron compounds, and 43% in K. pneumoniae. Cell culture analysis results show a decrease in viability and antioxidant capacity and an increase in total oxidant status after adding boron compounds to the culture. Immunofluorescence results show a correlation with MTT, and boron compounds increased 8-OHdG expression in comparison to antibiotic administration. In conclusion, boron compounds have promising effects on bacteria, especially in resistant bacteria spp.
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Affiliation(s)
- Demet Celebı
- Department of Microbiology, Faculty of Veterinary Medicine, Ataturk University, 25240, Erzurum, Turkey.
- Ataturk University Vaccine Application and Development Center, Ataturk University, 25240, Erzurum, Turkey.
| | - Ozgur Celebı
- Department of Medical Microbiology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey
| | - Elif Aydin
- Vocational School of Health Services, Kütahya Health Sciences University, Kütahya, Turkey
| | - Sumeyye Baser
- Department of Medical Microbiology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey
| | - Mustafa Can Güler
- Department of Medical Physiology, Faculty of Medicine, Atatürk University, Erzurum, Turkey
| | - Serkan Yildirim
- Department of Pathology, Faculty of Veterinary Medicine, Ataturk University, 25240, Erzurum, Turkey
| | - Ali Taghizadehghalehjoughi
- Department of Medical Pharmacology, Faculty of Medicine, Seyh Edebali University, 11000, Bilecik, Turkey
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Celebi O, Celebi D, Baser S, Aydın E, Rakıcı E, Uğraş S, Ağyar Yoldaş P, Baygutalp NK, Abd El-Aty AM. Antibacterial Activity of Boron Compounds Against Biofilm-Forming Pathogens. Biol Trace Elem Res 2024; 202:346-359. [PMID: 37464169 DOI: 10.1007/s12011-023-03768-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 07/05/2023] [Indexed: 07/20/2023]
Abstract
This study aimed to evaluate the antibacterial activity of nine boron derivatives against biofilm-forming pathogenic bacteria. The effect of boron derivatives (CMB, calcium metaborate; SMTB, sodium metaborate tetrahydrate; ZB, zinc borate; STFB, sodium tetra fluorine borate; STB, sodium tetraborate; PTFB, potassium tetra fluor borate; APTB, ammonium pentabo-rate tetrahydrate; SPM, sodium perborate monohydrate; Borax, ATFB, ammonium tetra fluorine borate) on bacteria isolated from blood culture was determined by the minimum inhibitory concentration (MIC) method. Then, biofilm formation potentials on microplates, tubes, and Congo red agar were examined. The cytotoxicity of boron derivatives was determined by using WST-1-based methods. The interaction between the biofilm-forming bacteria, fibroblast cells, and boron derivatives was determined with the infection model. We found that the sodium metaborate tetrahydrate molecule was effective against all pathogens. According to the optical density values detected at 630 nm in microplates, meticillin-resistant Staphylococcus aureus was observed to have the most substantial biofilm ability at 0.257 nm. As a result of cytotoxicity studies, it has been determined that a 1 µg/L concentration of boron derivatives is not toxic to fibroblast L929 cells. In cell culture experiments, these boron derivatives have very serious inhibitory activity against biofilm-forming pathogens in a short treatment period, such as 2-4 h. Furthermore, using these molecules on inanimate surfaces affected by biofilms would be appropriate instead of living cells.
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Affiliation(s)
- Ozgur Celebi
- Department of Medical Microbiology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey
| | - Demet Celebi
- Department of Microbiology, Faculty of Veterinary Medicine, Ataturk University, 25240, Erzurum, Turkey
- Ataturk University Vaccine Application and Development Center, Ataturk University, 25240, Erzurum, Turkey
| | - Sumeyye Baser
- Department of Medical Microbiology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey
| | - Elif Aydın
- Vocational School of Health Services, Kütahya Health Sciences University, Kütahya, Turkey.
| | - Erva Rakıcı
- Department of Medical Microbiology, Faculty of Medicine, Recep Tayyip Erdogan University, 53020, Rize, Turkey
| | - Serpil Uğraş
- Department of Field Crops, Faculty of Agriculture and Natural Science, Duzce University, 81620, Düzce, Turkey
| | - Pınar Ağyar Yoldaş
- Traditional and Complementary Medicine Applied and Research Center, Duzce University, Duzce, Turkey
| | - Nurcan Kılıç Baygutalp
- Department of Biochemistry, Faculty of Pharmacy, Ataturk University, 25240, Erzurum, Turkey
| | - A M Abd El-Aty
- Department of Medical Pharmacology, Faculty of Medicine, Ataturk University, 25240, Erzurum, Turkey
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Aksoy N, Vatansever C, Adalı C, Adaklı Aksoy B, Fışgın T. The Inhibitory Effects of Amylase and Streptokinase on Minimum Inhibitory Concentration of Antibiotics Used to Treat Gram Negative Bacteria Biofilm Infection on Indwelling Devices. Indian J Microbiol 2023; 63:533-540. [PMID: 38031607 PMCID: PMC10682295 DOI: 10.1007/s12088-023-01109-1] [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: 04/11/2023] [Accepted: 10/07/2023] [Indexed: 12/01/2023] Open
Abstract
The study evaluated and compared the effect of adding streptokinase and amylase to antibiotics that are already used in clinical practice to treat Gram negative bacteria biofilm infection on indwelling devices on the antibiotics' minimum inhibitory concentration (MIC). 24 h-old biofilms were developed on 96-well plate with eight clinical isolates. MIC of amikacin, cefepime, ceftazidime, colistin, meropenem, and piperacillin-tazobactam, on biofilms were measured before and after the addition of 25 U/ml streptokinase and 25 μg/ml amylase with microplate reader. The addition of streptokinase reduces the MICs of cefepime, ceftazidime, colistin, meropenem from (16, 16, 8, 4 μg/ml) to (8, 1, 1, 0.5 μg/ml) in Escherichia coli (isolate 1). While the addition of amylase reduces the MICs of only cefepime, ceftazidime from (16, 16 μg/ml) to (2, 4 μg/ml) in E. coli (isolate 1). In Pseudomonas aeruginosa (isolate 4), the MICs of amikacin, cefepime, ceftazidime, colistin and meropenem (64, 16, 32, 4, 32 μg/ml) reduced to (2, 1, 0.5, 0.25, 0.5 μg/ml) with streptokinase and (4, 4, 4, 2, 0.5 μg/ml) with amylase respectively. Similar inhibitions were seen in Pseudomonas putida, Proteus mirabilis. We can conclude that the addition of streptokinase and amylase were effective in reducing the MICs of antibiotics that are commonly used to treat Gram negative bacteria biofilm infection on indwelling devices, thereby increasing susceptibility of bacteria to antibiotics. Streptokinase obviously had a greater effect than amylase, implying that it should be prioritized in future in vivo and clinical studies to obtain successful therapy with antibiotics on biofilm infections.
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Affiliation(s)
- Nilay Aksoy
- Department of Clinical Pharmacy, School of Pharmacy, Altınbaş University, Istanbul, Turkey
| | - Cansu Vatansever
- Department of Pharmaceutical Microbiology, School of Pharmacy, Altınbaş University, Istanbul, Turkey
| | - Ceren Adalı
- Department of Clinical Pharmacy, School of Pharmacy, Lokman Hekim University, Ankara, Turkey
| | - Başak Adaklı Aksoy
- Medical Park Bahçelievler Hospital Pediatric Hematology Oncology and Pediatric Bone Marrow Transplantation Unit, Altınbaş University, Istanbul, Turkey
| | - Tunç Fışgın
- Medical Park Bahçelievler Hospital Pediatric Hematology Oncology and Pediatric Bone Marrow Transplantation Unit, Altınbaş University, Istanbul, Turkey
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Sharma S, Mohler J, Mahajan SD, Schwartz SA, Bruggemann L, Aalinkeel R. Microbial Biofilm: A Review on Formation, Infection, Antibiotic Resistance, Control Measures, and Innovative Treatment. Microorganisms 2023; 11:1614. [PMID: 37375116 DOI: 10.3390/microorganisms11061614] [Citation(s) in RCA: 76] [Impact Index Per Article: 76.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/15/2023] [Accepted: 05/23/2023] [Indexed: 06/29/2023] Open
Abstract
Biofilm is complex and consists of bacterial colonies that reside in an exopolysaccharide matrix that attaches to foreign surfaces in a living organism. Biofilm frequently leads to nosocomial, chronic infections in clinical settings. Since the bacteria in the biofilm have developed antibiotic resistance, using antibiotics alone to treat infections brought on by biofilm is ineffective. This review provides a succinct summary of the theories behind the composition of, formation of, and drug-resistant infections attributed to biofilm and cutting-edge curative approaches to counteract and treat biofilm. The high frequency of medical device-induced infections due to biofilm warrants the application of innovative technologies to manage the complexities presented by biofilm.
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Affiliation(s)
- Satish Sharma
- Department of Urology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY 14260, USA
| | - James Mohler
- Department of Urology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14203, USA
| | - Supriya D Mahajan
- Department of Medicine, Division of Allergy, Immunology, and Rheumatology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY 14203, USA
| | - Stanley A Schwartz
- Department of Urology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY 14260, USA
- Department of Medicine, Division of Allergy, Immunology, and Rheumatology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY 14203, USA
- Department of Medicine, VA Western New York Healthcare System, Buffalo, NY 14215, USA
| | - Liana Bruggemann
- Department of Biomedical Informatics, University at Buffalo, Buffalo, NY 14260, USA
| | - Ravikumar Aalinkeel
- Department of Urology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY 14260, USA
- Department of Medicine, Division of Allergy, Immunology, and Rheumatology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY 14203, USA
- Department of Medicine, VA Western New York Healthcare System, Buffalo, NY 14215, USA
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Efficacy of organo-selenium-incorporated urinary catheter tubing for in vitro growth inhibition of E. coli, K. pneumoniae, P. aeruginosa, and H. influenzae. Int Urol Nephrol 2023; 55:503-510. [PMID: 36462116 DOI: 10.1007/s11255-022-03422-y] [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: 07/12/2022] [Accepted: 11/18/2022] [Indexed: 12/04/2022]
Abstract
PURPOSE Catheter-associated urinary tract infections are of significant medical burden in cost, morbidity, and mortality. Experimental selenium-coated medical devices have demonstrated non-toxic in vitro and in vivo antimicrobial activity. While antimicrobial-coated catheters have shown efficacy in preventing CAUTIs, selenium has not been tested in this context. The purpose of this in vitro study is to evaluate selenium-incorporated urinary catheters for inhibition of uropathogenic bacterial growth and biofilm formation. METHODS Urinary catheters incorporated with 1% organo-selenium and standard (uncoated) catheters were incubated in vitro with E. coli, K. pneumoniae, P. aeruginosa, H. influenzae, and combinations of these bacteria. Growth was evaluated by colony-forming unit count and visualized with confocal laser and scanning electron microscopy. Organo-selenium catheter material integrity was also tested by soaking the tubing in phosphate-buffered saline for 12 weeks at 37 °C. RESULTS Organo-selenium-incorporated catheters demonstrated total reduction (100%) of in vitro bacterial growth and biofilm formation for E. coli, K. pneumoniae, H. influenzae, and a combination of these species when compared to control. P. aeruginosa growth was inhibited by approximately 4 logs (99.99%). Complete inhibition of E. coli growth was maintained after long-term phosphate-buffered saline soaking. CONCLUSION The results demonstrate that organo-selenium was stably incorporated into catheter tubing and inhibited bacterial attachment, growth, and biofilm formation for multiple uropathogenic organisms. Furthermore, long-term soaking of organo-selenium tubing in phosphate-buffered saline did not show any decline in bacterial growth inhibition or biofilm formation. These findings suggest that organo-selenium-incorporated catheters may be advantageous in preventing catheter-associated urinary tract infections and warrant further in vivo and clinical evaluation.
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AlMojel N, AbdulAzees PA, Lamb EM, Amaechi BT. Determining growth inhibition of Candida albicans biofilm on denture materials after application of an organoselenium-containing dental sealant. J Prosthet Dent 2023; 129:205-212. [PMID: 34078547 DOI: 10.1016/j.prosdent.2021.04.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 04/09/2021] [Accepted: 04/09/2021] [Indexed: 01/18/2023]
Abstract
STATEMENT OF PROBLEM Denture stomatitis is a chronic inflammatory condition caused by the formation of Candida albicans biofilm on denture bases. It is associated with aggravating intraoral pain, itching, and burning sensations. It can also potentiate cardiovascular diseases and aspiration pneumonia. The problem has thus far eluded efficient, toxic-free, and cost-effective solutions. PURPOSE The purpose of this in vitro study was to investigate the effectiveness of organoselenium to inhibit the formation of C. albicans biofilm on the surface of acrylic resin denture base materials when it is either incorporated into the acrylic resin material or coated on the denture surface as a light-polymerized surface sealant. MATERIAL AND METHODS Sixty heat-polymerized polymethyl methacrylate disks were fabricated and assigned to 4 groups (n=15): disks coated with a light-polymerized organoselenium-containing enamel surface sealant (DenteShield), disks impregnated with 0.5% organoselenium (0.5% selenium), disks impregnated with 1% organoselenium (1% selenium), and disks without organoselenium (control). C. albicans biofilm was grown on each disk which had been placed in a well of the microtiter plate containing 1-mL brain heart infusion broth inoculated with C. albicans. The plates were incubated aerobically at 37 °C for 48 hours. A confocal laser scanning microscope was used to determine the biofilm thickness, biomass, and live/dead cell ratio. Biofilm morphology was examined with scanning electron microscopy, whereas microbial viability was quantified by the spread plate method. The data were analyzed by using ANOVA and Tukey-Kramer multiple comparisons (α=.05). RESULTS The microbial viability, biofilm thickness, biofilm biomass, and live/dead cell ratio were lower (P<.001) on disks in the test groups (DenteShield, 0.5% selenium, 1% selenium) when compared with the control group, with these variables being lowest in the 0.5% selenium and 1% selenium groups. The 0.5% selenium and 1% selenium groups did not differ significantly from each other in any of the variables (P>.05). Scanning electron microscope images showed inhibition of both biofilm growth and yeast to hyphae transition in the DenteShield, 0.5% selenium, and 1% selenium groups, with visible disruption of the biofilm morphology. CONCLUSIONS The present study demonstrated that organoselenium, whether incorporated into or coated on the surface of an acrylic resin denture base material, has the potential to inhibit Candida albicans biofilm growth on denture surfaces and as such can be clinically useful for the prevention of denture stomatitis.
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Affiliation(s)
- Neda AlMojel
- Former Resident, Postgraduate Prosthodontics, Department of Comprehensive Dentistry, UT Health School of Dentistry, San Antonio, Texas
| | - Parveez Ahmed AbdulAzees
- Post-doctoral fellow, Department of Comprehensive Dentistry, UT Health School of Dentistry, San Antonio, Texas
| | - E Mathew Lamb
- Assistance Professor and program director prosthodontic residency, Department of Comprehensive dentistry, UT Health School of Dentistry, San Antonio, Texas
| | - Bennett T Amaechi
- Professor and Director of Cariology, Department of Comprehensive Dentistry, UT Health School of Dentistry, San Antonio, Texas.
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Physical Approaches to Prevent and Treat Bacterial Biofilm. Antibiotics (Basel) 2022; 12:antibiotics12010054. [PMID: 36671255 PMCID: PMC9854850 DOI: 10.3390/antibiotics12010054] [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: 11/13/2022] [Revised: 12/11/2022] [Accepted: 12/20/2022] [Indexed: 12/30/2022] Open
Abstract
Prosthetic joint infection (PJI) presents several clinical challenges. This is in large part due to the formation of biofilm which can make infection eradication exceedingly difficult. Following an extensive literature search, this review surveys a variety of non-pharmacological methods of preventing and/or treating biofilm within the body and how they could be utilized in the treatment of PJI. Special attention has been paid to physical strategies such as heat, light, sound, and electromagnetic energy, and their uses in biofilm treatment. Though these methods are still under study, they offer a potential means to reduce the morbidity and financial burden related to multiple stage revisions and prolonged systemic antibiotic courses that make up the current gold standard in PJI treatment. Given that these options are still in the early stages of development and offer their own strengths and weaknesses, this review offers an assessment of each method, the progress made on each, and allows for comparison of methods with discussion of future challenges to their implementation in a clinical setting.
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Tran P, Kopel J, Ray C, Reed J, Reid TW. Organo-selenium containing dental sealant inhibits biofilm formation by oral bacteria. Dent Mater 2022; 38:848-857. [DOI: 10.1016/j.dental.2022.04.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 03/31/2022] [Accepted: 04/01/2022] [Indexed: 11/17/2022]
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Patel B, Mishra S, Priyadarsini IK, Vavilala SL. Elucidating the anti-biofilm and anti-quorum sensing potential of selenocystine against respiratory tract infections causing bacteria: in vitro and in silico studies. Biol Chem 2021; 402:769-783. [PMID: 33735944 DOI: 10.1515/hsz-2020-0375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 03/10/2021] [Indexed: 11/15/2022]
Abstract
Bacteria are increasingly relying on biofilms to develop resistance to antibiotics thereby resulting in their failure in treating many infections. In spite of continuous research on many synthetic and natural compounds, ideal anti-biofilm molecule is still not found thereby warranting search for new class of molecules. The current study focuses on exploring anti-biofilm potential of selenocystine against respiratory tract infection (RTI)-causing bacteria. Anti-bacterial and anti-biofilm assays demonstrated that selenocystine inhibits the growth of bacteria in their planktonic state, and formation of biofilms while eradicating preformed-biofilm effectively. Selenocystine at a MIC50 as low as 42 and 28 μg/mL effectively inhibited the growth of Klebsiella pneumonia and Pseudomonas aeruginosa. The antibacterial effect is further reconfirmed by agar cup diffusion assay and growth-kill assay. Selenocystine showed 30-60% inhibition of biofilm formation in K. pneumonia, and 44-70% in P. aeruginosa respectively. It also distorted the preformed-biofilms by degrading the eDNA component of the Extracellular Polymeric Substance matrix. Molecular docking studies of selenocystine with quorum sensing specific proteins clearly showed that through the carboxylic acid moiety it interacts and inhibits the protein function, thereby confirming its anti-biofilm potential. With further validation selenocystine can be explored as a potential candidate for the treatment of RTIs.
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Affiliation(s)
- Bharti Patel
- School of Biological and Chemical Sciences, UM DAE Centre for Excellence in Basic Sciences, University of Mumbai, Kalina Campus, Santacruz East, Mumbai400098, India
| | - Subrata Mishra
- School of Biological and Chemical Sciences, UM DAE Centre for Excellence in Basic Sciences, University of Mumbai, Kalina Campus, Santacruz East, Mumbai400098, India
| | - Indira K Priyadarsini
- School of Biological and Chemical Sciences, UM DAE Centre for Excellence in Basic Sciences, University of Mumbai, Kalina Campus, Santacruz East, Mumbai400098, India
| | - Sirisha L Vavilala
- School of Biological and Chemical Sciences, UM DAE Centre for Excellence in Basic Sciences, University of Mumbai, Kalina Campus, Santacruz East, Mumbai400098, India
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Lin F, Yuan S, Han W. Effective prevention of Escherichia coli biofilm on materials by nano-vibration. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2020.125610] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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12
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Espaladori MC, Diniz JMB, de Brito LCN, Tavares WLF, Kawai T, Vieira LQ, Sobrinho APR. Selenium intracanal dressing: effects on the periapical immune response. Clin Oral Investig 2020; 25:2951-2958. [PMID: 33026524 DOI: 10.1007/s00784-020-03615-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 10/01/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVES To evaluate the selenium (Se) behavior when used as an endodontic dressing in teeth with pulp necrosis. Additionally, its effects was also compared with the calcium hydroxide (C.H.), which is used globally as a root canal dressing, and the combination of the C.H. with Se (C.H. + Se). MATERIALS AND METHODS The sample consisted of 60 patients requiring endodontic treatment who were divided into groups, i.e., without intracanal medication (empty) and with medications as follows: selenium (Se), calcium hydroxide (C.H.), and calcium hydroxide + selenium (C.H. + Se) (n = 15). After the coronary opening, three absorbent paper points were placed in the RCS and maintained for 2 min for microbial evaluation. Following the cleaning and shaping procedures, new paper points were introduced into the root canal system, passing passively through the root apex (2 mm) into the periapical tissues for 2 min, for immune evaluation. The collections were performed again 15 days later. Real-time PCR quantified the expression of the prokaryotic 16S ribosomal RNA. The 16S mRNA was evaluated before the cleaning and shaping procedures and 15 days later in the groups treated with or without medication. RESULTS A significant reduction in the microbial load was observed only in the groups that received endodontic dressing (p < 0.05). The cytokines IFN-γ, TNF-α, IL-1α, IL-17A, IL-10, IL-6 and MCP-1, were also quantified by real-time PCR. There was an increase in the gene expression level of the cytokines (T15) TNF-α and IL-10 in the C.H. group compared to the other groups (p < 0.05). The IFN-γ mRNA expression was reduced in the groups treated with the medications (Se, C.H., and C.H. + Se). CONCLUSIONS The findings of the present study indicate that in the case of treatment over multiple sessions, the use of root canal dressing is essential to avoid the root canal system (RCS) microbial recolonization. Selenium potentiated the effects of calcium hydroxide inducing an anti-inflammatory response in periapical tissues. CLINICAL RELEVANCE Se is a mineral essential for the formation of the amino acid selenocysteine, which is directly involved in the maintenance of the immune response. Selenium has been widely used in the medical field in the treatment of cancer, as an activator of bone metabolism, and as a stimulator of the immune system. In this study, it was shown that the incorporation of Se, whether as intracanal medication alone or in conjunction with other medications, may potentiate periapical tissue repair after RCS cleaning and shaping procedures.
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Affiliation(s)
- Marcela Carvalho Espaladori
- Department of Operative Dentistry, School of Dentistry, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Julia Mourão Braga Diniz
- Department of Operative Dentistry, School of Dentistry, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | | | | | - Toshihisa Kawai
- College of Dental Medicine, Nova Southeastern University, Davie, FL, USA
| | - Leda Quercia Vieira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
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Balikci E, Yilmaz B, Tahmasebifar A, Baran ET, Kara E. Surface modification strategies for hemodialysis catheters to prevent catheter-related infections: A review. J Biomed Mater Res B Appl Biomater 2020; 109:314-327. [PMID: 32864803 DOI: 10.1002/jbm.b.34701] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 07/21/2020] [Accepted: 08/04/2020] [Indexed: 12/11/2022]
Abstract
Insertion of a central venous catheter is one of the most common invasive procedures applied in hemodialysis therapy for end-stage renal disease. The most important complication of a central venous catheter is catheter-related infections that increase hospitalization and duration of intensive care unit stay, cost of treatment, mortality, and morbidity rates. Pathogenic microorganisms, such as, bacteria and fungi, enter the body from the catheter insertion site and the surface of the catheter can become colonized. The exopolysaccharide-based biofilms from bacterial colonies on the surface are the main challenge in the treatment of infections. Catheter lock solutions and systemic antibiotic treatment, which are commonly used in the treatment of hemodialysis catheter-related infections, are insufficient to prevent and terminate the infections and eventually the catheter needs to be replaced. The inadequacy of these approaches in termination and prevention of infection revealed the necessity of coating of hemodialysis catheters with bactericidal and/or antiadhesive agents. Silver compounds and nanoparticles, anticoagulants (e.g., heparin), antibiotics (e.g., gentamicin and chlorhexidine) are some of the agents used for this purpose. The effectiveness of few commercial hemodialysis catheters that were coated with antibacterial agents has been tested in clinical trials against catheter-related infections of pathogenic bacteria, such as Staphylococcus aureus and Staphylococcus epidermidis with promising results. Novel biomedical materials and engineering techniques, such as, surface micro/nano patterning and the conjugation of antimicrobial peptides, enzymes, metallic cations, and hydrophilic polymers (e.g., poly [ethylene glycol]) on the surface, has been suggested recently.
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Affiliation(s)
- Elif Balikci
- Department of Tissue Engineering, University of Health Sciences Turkey, Istanbul, 34668, Turkey
| | - Bengi Yilmaz
- Department of Tissue Engineering, University of Health Sciences Turkey, Istanbul, 34668, Turkey.,Department of Biomaterials, University of Health Sciences Turkey, Istanbul, 34668, Turkey
| | - Aydin Tahmasebifar
- Department of Tissue Engineering, University of Health Sciences Turkey, Istanbul, 34668, Turkey.,Department of Biomaterials, University of Health Sciences Turkey, Istanbul, 34668, Turkey
| | - Erkan Türker Baran
- Department of Tissue Engineering, University of Health Sciences Turkey, Istanbul, 34668, Turkey.,Department of Biomaterials, University of Health Sciences Turkey, Istanbul, 34668, Turkey
| | - Ekrem Kara
- Department of Internal Medicine, Division of Nephrology, School of Medicine, Recep Tayyip Erdogan University, Rize, 53100, Turkey
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14
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Datta A, Willcox MDP, Stapleton F. In vivo efficacy of silver-impregnated barrel contact lens storage cases. Cont Lens Anterior Eye 2020; 44:101357. [PMID: 32807659 DOI: 10.1016/j.clae.2020.08.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 08/02/2020] [Accepted: 08/06/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE This study examined the rate and level of microbial contamination of silver and non-silver (control) barrel contact lens storage cases in vivo. METHODS A prospective, single-centre, randomized, double blinded, crossover study was conducted to evaluate the efficacy of silver and control barrel cases used with an Oxipol™-based disinfecting solution over a two-month period. Lens cases were collected, and the frequency, type and level of microbial contamination evaluated using viable culture and standard identification methods. Questionnaires were used to assess the contact lens-related hygiene compliance of the participants. RESULTS Forty eight daily contact lens wearers completed the study. Overall, 27 % of silver and 35 % control lens cases (P > 0.05) were contaminated, predominantly with Gram-positive bacteria. Only, 12 % of participants had good compliance, with 46 % having average compliance and 43 % poor compliance. Compliance score was not associated with level of microbial contamination. However, the use of hydrogel lenses in combination with silver cases compared to non-silver barrel cases resulted significantly greater numbers of bacteria colonising cases. CONCLUSION The present investigation demonstrated that the use of silver barrel cases does not reduce the overall rate and level of bacterial contamination, but that using hydrogel lenses in combination with silver cases resulted in higher numbers of bacteria isolated from cases.
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Affiliation(s)
- Ananya Datta
- School of Optometry and Vision Science, UNSW Sydney, NSW, Australia
| | - Mark D P Willcox
- School of Optometry and Vision Science, UNSW Sydney, NSW, Australia
| | - Fiona Stapleton
- School of Optometry and Vision Science, UNSW Sydney, NSW, Australia.
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15
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Dhand C, Ong CY, Dwivedi N, Varadarajan J, Halleluyah Periayah M, Jianyang Lim E, Mayandi V, Goh ETL, Najjar RP, Chan LW, Beuerman RW, Foo LL, Loh XJ, Lakshminarayanan R. Mussel-Inspired Durable Antimicrobial Contact Lenses: The Role of Covalent and Noncovalent Attachment of Antimicrobials. ACS Biomater Sci Eng 2020; 6:3162-3173. [DOI: 10.1021/acsbiomaterials.0c00229] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chetna Dhand
- Anti-Infectives Research Group, Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
- CSIR-Advanced Materials and Processes Research Institute, Hoshangabad Road, Bhopal 462026, India
| | - Chun Yan Ong
- Department of Pharmacy, National University of Singapore, 18 Science Drive, Singapore 117543, Singapore
| | - Neeraj Dwivedi
- CSIR-Advanced Materials and Processes Research Institute, Hoshangabad Road, Bhopal 462026, India
| | - Jayasudha Varadarajan
- Anti-Infectives Research Group, Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
| | - Mercy Halleluyah Periayah
- Anti-Infectives Research Group, Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
| | - Edward Jianyang Lim
- Anti-Infectives Research Group, Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
| | - Venkatesh Mayandi
- Anti-Infectives Research Group, Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
- School of Biological Sciences, Nanyang Technological University Singapore, 60 Nanyang Drive, Singapore 637551, Singapore
| | - Eunice Tze Leng Goh
- Anti-Infectives Research Group, Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
| | - Raymond P. Najjar
- Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Graduate Medical School, Singapore 169857 Singapore
- Visual Neuroscience Research Group, Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
| | - Lai Wah Chan
- Department of Pharmacy, National University of Singapore, 18 Science Drive, Singapore 117543, Singapore
| | - Roger W. Beuerman
- Anti-Infectives Research Group, Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
- Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Graduate Medical School, Singapore 169857 Singapore
| | - Li Lian Foo
- Singapore National Eye Centre, 11 Third Hospital Avenue, Singapore 168751, Singapore
| | - Xian Jun Loh
- Institute of Materials Research and Engineering, A*STAR, 3 Research Link, Singapore 117602, Singapore
| | - Rajamani Lakshminarayanan
- Anti-Infectives Research Group, Singapore Eye Research Institute, The Academia, 20 College Road, Discovery Tower, Singapore 169856, Singapore
- Department of Pharmacy, National University of Singapore, 18 Science Drive, Singapore 117543, Singapore
- Ophthalmology and Visual Sciences Academic Clinical Program, Duke-NUS Graduate Medical School, Singapore 169857 Singapore
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16
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Tran P, Enos T, Luth K, Hamood A, Ray C, Mitchell K, Reid TW. Organo-Selenium-Containing Polyester Bandage Inhibits Bacterial Biofilm Growth on the Bandage and in the Wound. Biomedicines 2020; 8:biomedicines8030062. [PMID: 32192009 PMCID: PMC7148522 DOI: 10.3390/biomedicines8030062] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 03/11/2020] [Accepted: 03/12/2020] [Indexed: 12/20/2022] Open
Abstract
The dressing material of a wound plays a key role since bacteria can live in the bandage and keep re-infecting the wound, thus a bandage is needed that blocks biofilm in the bandage. Using an in vivo wound biofilm model, we examined the effectiveness of an organo-selenium (OS)-coated polyester dressing to inhibit the growth of bacteria in a wound. Staphylococcus aureus (as well as MRSA, Methicillin resistant Staph aureus), Stenotrophomonas maltophilia, Enterococcus faecalis, Staphylococcus epidermidis, and Pseudomonas aeruginosa were chosen for the wound infection study. All the bacteria were enumerated in the wound dressing and in the wound tissue under the dressing. Using colony-forming unit (CFU) assays, over 7 logs of inhibition (100%) was found for all the bacterial strains on the material of the OS-coated wound dressing and in the tissue under that dressing. Confocal laser scanning microscopy along with IVIS spectrum in vivo imaging confirmed the CFU results. Thus, the dressing acts as a reservoir for a biofilm, which causes wound infection. The same results were obtained after soaking the dressing in PBS at 37 °C for three months before use. These results suggest that an OS coating on polyester dressing is both effective and durable in blocking wound infection.
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Affiliation(s)
- Phat Tran
- Department of Ophthalmology & Visual Sciences, TTUHSC, Lubbock, TX 79430, USA; (P.T.); (T.E.); (K.L.); (C.R.); (K.M.)
| | - Tyler Enos
- Department of Ophthalmology & Visual Sciences, TTUHSC, Lubbock, TX 79430, USA; (P.T.); (T.E.); (K.L.); (C.R.); (K.M.)
| | - Keaton Luth
- Department of Ophthalmology & Visual Sciences, TTUHSC, Lubbock, TX 79430, USA; (P.T.); (T.E.); (K.L.); (C.R.); (K.M.)
| | - Abdul Hamood
- Department of Microbiology & Immunology, TTUHSC, Lubbock, TX 79430, USA;
| | - Coby Ray
- Department of Ophthalmology & Visual Sciences, TTUHSC, Lubbock, TX 79430, USA; (P.T.); (T.E.); (K.L.); (C.R.); (K.M.)
| | - Kelly Mitchell
- Department of Ophthalmology & Visual Sciences, TTUHSC, Lubbock, TX 79430, USA; (P.T.); (T.E.); (K.L.); (C.R.); (K.M.)
| | - Ted W. Reid
- Department of Ophthalmology & Visual Sciences, TTUHSC, Lubbock, TX 79430, USA; (P.T.); (T.E.); (K.L.); (C.R.); (K.M.)
- SelenBio, Inc., Austin, TX 78735, USA
- Correspondence: ; Tel.: +1-806-743-9982
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17
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Krasniqi S, Sejdini M, Stubljar D, Jukic T, Ihan A, Aliu K, Aliu X. Antimicrobial Effect of Orthodontic Materials on Cariogenic Bacteria Streptococcus mutans and Lactobacillus acidophilus. Med Sci Monit Basic Res 2020; 26:e920510. [PMID: 31959737 PMCID: PMC6993557 DOI: 10.12659/msmbr.920510] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND White spot lesions (WSLs) are a common complication after orthodontic treatment. The aim of this study was to characterize and compare the antimicrobial properties of selenium-containing vs. fluoride-containing orthodontic materials. MATERIAL AND METHODS Antibacterial efficacy of orthodontic materials (SeLECT Defense bonding agent, Adhesive agent, Band Cement, Transbond Plus SEP bonding agent, Transbond Plus Adhesive agent, Fuji I Band cement, Fuji Ortho LC Adhesive agent, Ortho Solo Bonding agent, Transbond XT bonding agent, and Transbond XT primer) was tested with the inhibition of 2 bacterial strains: S. mutans (ATCC 10449) and L. acidophilus (ATCC 4356). The antimicrobial efficacy of the materials was measured by agar diffusion test. The diameters of inhibition zones around each disk were measured in millimeters (mm). RESULTS Materials containing selenium and fluoride showed significant differences from the negative control (both p<0.001). Orthodontic materials containing fluoride as a potential antimicrobial agent showed larger zones of inhibition in total (9.1±2.6 mm), the selenium group was the second-most effective (4.7±4.9 mm), and the group without any potential antimicrobial agent showed the least antimicrobial effect (0.9±1.0 mm). Materials from the group with no antibacterial agent were not significantly different from the negative control group (p>0.05). CONCLUSIONS Materials containing selenium carried the most significance when comparing microorganisms with the agent, since they were the only ones showing difference between the 2 microorganisms. They showed statistically significant difference in efficacy against S. mutans, and poor antimicrobial effect against L. acidophilus. These data suggest that orthodontic materials containing selenium might have the potential to prevent WSLs due to their antimicrobial properties.
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Affiliation(s)
- Sokol Krasniqi
- Faculty of Medicine, University of Pristina, Pristina, Kosovo
| | - Milaim Sejdini
- Faculty of Medicine, University of Pristina, Pristina, Kosovo
| | - David Stubljar
- Department of Research and Development, In-Medico, Metlika, Slovenia
| | - Tomislav Jukic
- Department of Internal Medicine, History of Medicine and Medical Ethics, Faculty of Medicine, Osijek, Croatia
| | - Alojz Ihan
- Medical Faculty, Institute of Microbiology and Immunology, Ljubljana, Slovenia
| | - Kaltrina Aliu
- Faculty of Medicine, University of Pristina, Pristina, Kosovo
| | - Xhevdet Aliu
- Faculty of Dentistry, University for Business and Technology, Pristina, Kosovo
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Abstract
The formation of bacterial biofilm on implanted devices or damaged tissues leads to biomaterial-associated infections often resulting in life-threatening diseases and implant failure. It is a challenging process to eradicate biofilms as they are resistant to antimicrobial treatments. Conventional techniques, such as high heat and chemicals exposure, may not be suitable for biofilm removal in nosocomial settings. These techniques create surface degradation on the treated materials and lead to environmental pollution due to the use of toxic chemicals. A novel technique known as non-thermal plasma has a great potential to decontaminate or sterilize those nosocomial biofilms. This article aims to provide readers with an extensive review of non-thermal plasma and biofilms to facilitate further investigations. A brief introduction summarizes the problem caused by biofilms in hospital settings with current techniques used for biofilm inactivation followed by the literature review strategy. The remainder of the review discusses plasma and its generation, the role played by plasma reactive species, various factors affecting the antimicrobial efficacy of non-thermal plasma and summarizes many studies published in the field.
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19
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Cotton Cellulose-CdTe Quantum Dots Composite Films with Inhibition of Biofilm-Forming S. aureus. FIBERS 2019. [DOI: 10.3390/fib7060057] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A cellulose-cadmium (Cd)-tellurium (TE) quantum dots (QDs) composite film was successfully synthesized by incorporating CdTe QDs onto a cellulose matrix derived from waste cotton linters. Cellulose-CdTe QDs composite film was characterized by field emission scanning electron microscopy (FE-SEM), energy dispersive X-ray (EDX) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), and X-ray diffraction (XRD). The antibacterial activity of the prepared composite film was investigated using the multidrug-resistance (MTR) Staphylococcus aureus bacteria. In vitro antibacterial assays demonstrated that CdTe QDs composite film can efficiently inhibit biofilm formation. Our results showed that the cellulose-CdTe QDs composite film is a promising candidate for biomedical applications including wound dressing, medical instruments, burn treatments, implants, and other biotechnology fields.
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20
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Dsouza R, Spillman DR, Barkalifa R, Monroy GL, Chaney EJ, White KC, Boppart SA. In vivo detection of endotracheal tube biofilms in intubated critical care patients using catheter-based optical coherence tomography. JOURNAL OF BIOPHOTONICS 2019; 12:e201800307. [PMID: 30604487 PMCID: PMC6470036 DOI: 10.1002/jbio.201800307] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 11/21/2018] [Accepted: 01/02/2019] [Indexed: 06/09/2023]
Abstract
The formation of biofilms in the endotracheal tubes (ETTs) of intubated patients on mechanical ventilation is associated with a greater risk of ventilator-associated pneumonia and death. New technologies are needed to detect and monitor ETTs in vivo for the presence of these biofilms. Longitudinal OCT imaging was performed in mechanically ventilated subjects at 24-hour intervals until extubation to detect the formation and temporal changes of in vivo ETT biofilms. OCT-derived attenuation coefficient images were used to differentiate between mucus and biofilm. Extubated ETTs were examined with optical and electron microscopy, and all imaging results were correlated with standard-of-care clinical test reports. OCT and attenuation coefficient images from four subjects were positive for ETT biofilms and were negative for two subjects. The processed and stained extubated ETTs and clinical reports confirmed the presence/absence of biofilms in all subjects. Our findings confirm that OCT can detect and differentiate between biofilm-positive and biofilm-negative groups (P < 10-5 ). OCT image-based features may serve as biomarkers for direct in vivo detection of ETT biofilms and help drive investigation of new management strategies to reduce the incidence of VAP.
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Affiliation(s)
- Roshan Dsouza
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N Mathews Ave, Urbana, Illinois 61801, USA
| | - Darold R. Spillman
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N Mathews Ave, Urbana, Illinois 61801, USA
| | - Ronit Barkalifa
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N Mathews Ave, Urbana, Illinois 61801, USA
| | - Guillermo L. Monroy
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N Mathews Ave, Urbana, Illinois 61801, USA
- Department of Bioengineering, University of Illinois at Urbana-Champaign, 1270 Digital Computer Laboratory, MC-278, Urbana, Illinois 61801, USA
| | - Eric J. Chaney
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N Mathews Ave, Urbana, Illinois 61801, USA
| | - Karen C. White
- Critical Care Medicine, Carle Foundation Hospital, 611 W. Park Street, Urbana, Illinois 61801, USA
| | - Stephen A. Boppart
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 N Mathews Ave, Urbana, Illinois 61801, USA
- Department of Bioengineering, University of Illinois at Urbana-Champaign, 1270 Digital Computer Laboratory, MC-278, Urbana, Illinois 61801, USA
- Carle-Illinois College of Medicine, University of Illinois at Urbana-Champaign, 807 S. Wright St., Urbana, Illinois 61801, USA
- Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, 306 N. Wright St., Urbana, Illinois 61801, USA
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Suresh MK, Biswas R, Biswas L. An update on recent developments in the prevention and treatment of Staphylococcus aureus biofilms. Int J Med Microbiol 2019; 309:1-12. [DOI: 10.1016/j.ijmm.2018.11.002] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 11/19/2018] [Accepted: 11/26/2018] [Indexed: 12/17/2022] Open
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22
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Kumbar L, Yee J. Current Concepts in Hemodialysis Vascular Access Infections. Adv Chronic Kidney Dis 2019; 26:16-22. [PMID: 30876612 DOI: 10.1053/j.ackd.2018.10.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 10/24/2018] [Accepted: 10/26/2018] [Indexed: 01/15/2023]
Abstract
Infection-related causes are second only to cardiovascular events for mortality among end-stage renal disease patients. This review will provide an overview of hemodialysis catheter-, graft-, and fistula-related infections with emphasis on diagnosis and management in specific settings. Use of catheters at the initiation of dialysis has remained unchanged at 80%. Of all access-related bloodstream infections (BSIs), 70% occur in patients with catheters. The risk factors for BSIs in tunneled, cuffed catheters include the duration of the catheter, past catheter-related bacteremia, left-sided internal jugular vein catheters, hypoalbuminemia, and immunosuppression. Surprisingly, human immunodeficiency virus infection has not been associated with a higher risk of catheter-related bacteremia. Catheter-related bloodstream infection is a clinical definition that requires specific laboratory testing to identify the catheter as the source of the BSI. A central line-associated bloodstream infection is a primary BSI in a patient who had a catheter within the 48-h period before the development of the BSI with no other identifiable source. Guidewire exchange of catheter is a viable alternative in select patients to aid in preserving venous access sites. Catheter lock therapy can decrease infectious complications and mortality. Arteriovenous graft infections are prevalent with significant morbidity. Studies evaluating the impact of stent use in infection risks of the arteriovenous graft are sorely needed.
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Ko SJ, Kang NH, Kim MK, Park J, Park E, Park GH, Kang TW, Na DE, Park JB, Yi YE, Jeon SH, Park Y. Antibacterial and anti-biofilm activity, and mechanism of action of pleurocidin against drug resistant Staphylococcus aureus. Microb Pathog 2018; 127:70-78. [PMID: 30508627 DOI: 10.1016/j.micpath.2018.11.052] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 11/29/2018] [Indexed: 11/25/2022]
Abstract
The abuse of antibiotics has resulted in the emergence of multi-drug-resistant bacteria. Staphylococcus aureus is a frequent cause of infections, and antibiotic-resistant S. aureus has become a serious problem. Antimicrobial peptides play an important role in innate immunity and are attracting increasing attention as alternative antibiotics. In a previous study, pleurocidin, derived from winter flounder, was identified as a 25-amino acid antimicrobial peptide with no cytotoxicity toward mammalian cells and low hemolytic activity. In the present study, pleurocidin was observed to exhibit antimicrobial activity against gram-positive and gram-negative bacteria, especially against drug resistant S. aureus. Pleurocidin retained its antibacterial activity against drug resistant S. aureus in the presence of a physiological salt concentration. Membrane depolarization assays and propidium iodide uptake indicated that pleurocidin kills bacteria by damaging the integrity of the bacterial membrane. DNA binding assays revealed that pleurocidin binds to DNA. Thus, pleurocidin targets not only the bacterial membrane, but also their DNA. S. aureus biofilms have become a serious problem because of increased resistance to antibiotics. Therefore, we investigated the effect of pleurocidin on biofilm inhibition and eradication using crystal violet staining and microscopic observation. Pleurocidin inhibited and eradicated biofilms at low concentrations. Taken together, the results suggested that pleurocidin is a promising candidate therapeutic agent to treat drug-resistant bacteria and biofilm-related infections.
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Affiliation(s)
- Su Jin Ko
- Department of Biomedical Science, Chosun University, Gwangju, 61452, South Korea
| | - Na Hee Kang
- Department of Biomedical Science, Chosun University, Gwangju, 61452, South Korea
| | - Min Kyung Kim
- Department of Biomedical Science, Chosun University, Gwangju, 61452, South Korea
| | - Jonggwan Park
- Department of Bioinformatics, Kongju National University, Kongju, 38065, South Korea
| | - Eunji Park
- Department of Biomedical Science, Chosun University, Gwangju, 61452, South Korea
| | - Ga Hyeon Park
- Jangseong High School, Jeollanamdo, 57216, South Korea
| | - Tae Woo Kang
- Jangseong High School, Jeollanamdo, 57216, South Korea
| | - Da Eun Na
- Jangseong High School, Jeollanamdo, 57216, South Korea
| | - Jin Bae Park
- Jangseong High School, Jeollanamdo, 57216, South Korea
| | - Yae Eun Yi
- Jangseong High School, Jeollanamdo, 57216, South Korea
| | | | - Yoonkyung Park
- Department of Biomedical Science, Chosun University, Gwangju, 61452, South Korea; Research Center for Proteineous Materials, Chosun University, Gwangju, 61452, South Korea.
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Cheng H, Zhang M, Hu H, Gong Z, Zeng Y, Chen J, Zhu Z, Wan Y. Selenium-Modified TiO2 Nanoarrays with Antibacterial and Anticancer Properties for Postoperation Therapy Applications. ACS APPLIED BIO MATERIALS 2018; 1:1656-1666. [DOI: 10.1021/acsabm.8b00486] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
| | | | | | | | | | | | | | - Ying Wan
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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25
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Nair MS, Upadhyay A, Fancher S, Upadhyaya I, Dey S, Kollanoor-Johny A, Zhao J, Venkitanarayanan K. Inhibition and Inactivation of Escherichia coli O157:H7 Biofilms by Selenium. J Food Prot 2018; 81:926-933. [PMID: 29745757 DOI: 10.4315/0362-028x.jfp-17-427] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The present study investigated the efficacy of selenium (Se) in reduction of enterohemorrhagic Escherichia coli (EHEC) exopolysaccharide (EPS) synthesis, inhibition of biofilm formation at 25 and 4°C on polystyrene surface, and inactivation of mature EHEC biofilms in combination with hot water. Sterile 96-well polystyrene plates inoculated with EHEC (∼6.0 log CFU per well) were treated with a subinhibitory concentration (SIC) of Se, and biofilms were allowed to mature at 4 and 25°C for 96 h. Biofilm-associated bacterial population was determined by scraping and plating, whereas the extent of EPS production was determined using ruthenium red staining assay. Solid surface assay was used to study the effect of Se on early attachment of EHEC cells to polystyrene. The efficacy of Se in rapid inactivation of preformed, mature EHEC biofilm was investigated by treating biofilms on polystyrene plates with the MBC of Se in combination with hot water at 80°C with a contact time of 0 min, 30 s, 2 min, and 5 min. Furthermore, the effect of Se on EHEC biofilm architecture was visualized using confocal microscopy, whereas the effect of Se on EHEC biofilm genes was determined using real-time quantitative PCR (RT-qPCR). Finally, the potential feasibility of coating stainless steel surfaces with Se nanoparticles to inhibit EHEC biofilm formation was studied. Se reduced early attachment of planktonic cells, biofilm formation, and EPS synthesis in EHEC ( P < 0.05). Se in combination with hot water reduced biofilm-associated bacterial counts by 3 to 4 log CFU/mL at 5 min of exposure compared with the control ( P < 0.05). However, hot water treatment alone decreased biofilm-associated bacterial counts by only 1.0 log CFU/mL. RT-qPCR results revealed that Se down-regulated the transcription of critical genes associated with biofilm synthesis in EHEC ( P < 0.05). The results collectively suggest that Se could potentially be used to control EHEC biofilms in food processing environments, but appropriate applications need to be validated.
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Affiliation(s)
- Meera Surendran Nair
- 1 Department of Animal Science, University of Connecticut, Storrs, Connecticut 06269, USA
| | - Abhinav Upadhyay
- 1 Department of Animal Science, University of Connecticut, Storrs, Connecticut 06269, USA
| | - Samantha Fancher
- 1 Department of Animal Science, University of Connecticut, Storrs, Connecticut 06269, USA
| | - Indu Upadhyaya
- 1 Department of Animal Science, University of Connecticut, Storrs, Connecticut 06269, USA
| | - Swayandipta Dey
- 2 Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, USA
| | - Anup Kollanoor-Johny
- 1 Department of Animal Science, University of Connecticut, Storrs, Connecticut 06269, USA
| | - Jing Zhao
- 2 Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, USA
| | - Kumar Venkitanarayanan
- 1 Department of Animal Science, University of Connecticut, Storrs, Connecticut 06269, USA
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Tran PL, Li J, Lungaro L, Ramesh S, Ivanov IN, Moon JW, Graham DE, Hamood A, Wang J, Elfick AP, Rivero IV. Cryomilled zinc sulfide: A prophylactic for Staphylococcus aureus-infected wounds. J Biomater Appl 2018; 33:82-93. [PMID: 29683016 DOI: 10.1177/0885328218770530] [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: 11/15/2022]
Abstract
Bacterial pathogens that colonize wounds form biofilms, which protect the bacteria from the effect of host immune response and antibiotics. This study examined the effectiveness of newly synthesized zinc sulfide in inhibiting biofilm development by Staphylococcus aureus ( S. aureus) strains. Zinc sulfide (ZnS) was anaerobically biosynthesized to produce CompA, which was further processed by cryomilling to maximize the antibacterial properties to produce CompB. The effect of the two compounds on the S. aureus strain AH133 was compared using zone of inhibition assay. The compounds were formulated in a polyethylene glycol cream. We compared the effect of the two compounds on biofilm development by AH133 and two methicillin-resistant S. aureus clinical isolates using the in vitro model of wound infection. Zone of inhibition assay revealed that CompB is more effective than CompA. At 15 mg/application, the formulated cream of either compound inhibited biofilm development by AH133, which was confirmed using confocal laser scanning microscopy. At 20 mg/application, CompB inhibited biofilm development by the two methicillin-resistant S. aureus clinical isolates. To further validate the effectiveness of CompB, mice were treated using the murine model of wound infection. Colony forming cell assay and in vivo live imaging results strongly suggested the inhibition of S. aureus growth.
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Affiliation(s)
- Phat L Tran
- 1 Department of Ophthalmology and Visual Sciences, Texas Tech University Health Sciences Center, School of Medicine, Lubbock, Texas, USA
| | - Jianqiang Li
- 2 Department of Industrial and Manufacturing Systems Engineering, Iowa State University, Ames IA, USA
| | - Lisa Lungaro
- 3 Institute for Bioengineering, University of Edinburgh, Edinburgh, Scotland, UK
| | - Srikanthan Ramesh
- 2 Department of Industrial and Manufacturing Systems Engineering, Iowa State University, Ames IA, USA
| | - Ilia N Ivanov
- 4 Center for Nanophase Materials Science, Oak Ridge National Laboratory, Oak Ridge TN, USA
| | - Ji-Won Moon
- 5 Biosciences Division, Oak Ridge National Laboratory, Oak Ridge TN, USA
| | - David E Graham
- 5 Biosciences Division, Oak Ridge National Laboratory, Oak Ridge TN, USA
| | - Abdul Hamood
- 6 Department of Molecular Microbiology and Immunology, Texas Tech University Health Sciences Center, Lubbock, Texas, USA.,7 Department of Surgery, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
| | - James Wang
- 8 School of Medicine, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
| | - Alistair Pd Elfick
- 3 Institute for Bioengineering, University of Edinburgh, Edinburgh, Scotland, UK
| | - Iris V Rivero
- 2 Department of Industrial and Manufacturing Systems Engineering, Iowa State University, Ames IA, USA.,7 Department of Surgery, Texas Tech University Health Sciences Center, Lubbock, Texas, USA
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Deb A, Vimala R. Biofilm Formation by Pseudomonas Species Onto Graphene Oxide–TiO 2 Nanocomposite-Coated Catheters: In vitro Analysis. INTERNATIONAL JOURNAL OF NANOSCIENCE 2018. [DOI: 10.1142/s0219581x17600146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The present study focuses on the development of an in vitro model system for biofilm growth by Pseudomonas aerouginosa onto small discs of foley catheter. Catheter disc used for the study was coated with graphene oxide–titanium oxide composite (GO–TiO[Formula: see text] and titanium oxide (TiO[Formula: see text] and characterized through XRD, UV–visible spectroscopy. Morphological analysis was done by scanning electron microscopy (SEM). The biofilm formed on the catheter surface was quantified by crystal violet (CV) staining method and a colorimetric assay (MTT assay) which involves the reduction of tetrazolium salt. The catheter coated with GO–TiO2 showed reduced biofilm growth in comparison to the TiO2-coated and uncoated catheter, thus indicating that it could be successfully used in coating biomedical devices to prevent biofilm formation which is a major cause of nosocomial infection.
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Affiliation(s)
- Ananya Deb
- School of Biosciences and Technology, VIT University, Vellore 632 014, Tamil Nadu, India
| | - R. Vimala
- Center for Nanotechnology Research, VIT University, Vellore 632 014, Tamil Nadu, India
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Kim MK, Kang HK, Ko SJ, Hong MJ, Bang JK, Seo CH, Park Y. Mechanisms driving the antibacterial and antibiofilm properties of Hp1404 and its analogue peptides against multidrug-resistant Pseudomonas aeruginosa. Sci Rep 2018; 8:1763. [PMID: 29379033 PMCID: PMC5789083 DOI: 10.1038/s41598-018-19434-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Accepted: 12/28/2017] [Indexed: 01/06/2023] Open
Abstract
Hp1404, identified from the venom of the scorpion Heterometrus petersii, displays antimicrobial activity with cytotoxicity. Several synthetic peptides were designed based on the parent peptide Hp1404 to reduce cytotoxicity and improve activity (deletion of glycine and phenylalanine, substitution with leucine and lysine). The analogue peptides generated comprised 12 amino acids and displayed amphipathic α-helical structures, with higher hydrophobic moments and net positive charge than those of the Hp1404. The analogues showed less hemolytic and toxic effects toward mammalian cells than the Hp1404, especially Hp1404-T1e, which exhibited particularly potent antibacterial and antibiofilm activities against multidrug-resistant Pseudomonas aeruginosa (MRPA) strains. The analogue peptide Hp1404-T1e was more stable against salt and trypsin than the Hp1404. Hp1404's mechanism of action involves binding to lipopolysaccharide (LPS), thereby killing bacteria through membrane disruption. Hp1404-T1e kills bacteria more rapidly than Hp1404 and not only seems to bind more strongly to LPS but may also be able to enter bacterial cells and interact with their DNA. Additionally, Hp1404-T1e can effectively kill bacteria in vivo. The results of this study indicate that Hp1404-T1e not only displays antimicrobial activity, but is also functional in physiological conditions, confirming its potential use as an effective therapeutic agent against MRPA.
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Affiliation(s)
- Min Kyung Kim
- Research Center for proteineous Materials (RCPM), Chosun University, Kwangju, Republic of Korea
- Department of Biotechnology and BK21-Plus Research Team for Bioactive Control Technology, Chosun University, Kwangju, Republic of Korea
| | - Hee Kyoung Kang
- Department of Biotechnology and BK21-Plus Research Team for Bioactive Control Technology, Chosun University, Kwangju, Republic of Korea
| | - Su Jin Ko
- Research Center for proteineous Materials (RCPM), Chosun University, Kwangju, Republic of Korea
- Department of Biotechnology and BK21-Plus Research Team for Bioactive Control Technology, Chosun University, Kwangju, Republic of Korea
| | - Min Ji Hong
- Research Center for proteineous Materials (RCPM), Chosun University, Kwangju, Republic of Korea
- Department of Biotechnology and BK21-Plus Research Team for Bioactive Control Technology, Chosun University, Kwangju, Republic of Korea
| | - Jeong Kyu Bang
- Division of Magnetic Resonance, Korea Basic Science Institute, Ochang, Chung-Buk, 363-883, Republic of Korea
| | - Chang Ho Seo
- Department of Bioinformatics, Kongju National University, Kongju, 314-701, South Korea
| | - Yoonkyung Park
- Research Center for proteineous Materials (RCPM), Chosun University, Kwangju, Republic of Korea.
- Department of Biotechnology and BK21-Plus Research Team for Bioactive Control Technology, Chosun University, Kwangju, Republic of Korea.
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Latorre-Sánchez A, Johansson M, Zhang Y, Malkoch M, Pomposo JA. Active quinine-based films able to release antimicrobial compounds via melt quaternization at low temperature. J Mater Chem B 2017; 6:98-104. [PMID: 32254197 DOI: 10.1039/c7tb02739g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The fabrication of antibacterial films based on renewable materials (e.g., chitosan) has attracted significant interest in fields such as food packaging, health care and medicine. However, exploiting the antibacterial properties of cinchona alkaloids to design active nanostructured films able to release quinine-based antimicrobial compounds has not been considered previously. Herein, we develop two different routes to produce active quinine-based nanostructured cross-linked films by exploiting the multiple reactive sites of quinine and, specifically, both the nitrogen atom and the vinyl group of the quinuclidine portion of the molecule, as well as their corresponding orthogonal quaternization and thiol-ene coupling reactions. The first synthetic strategy produces stiff and brittle nanostructured quinine-based films of limited utility for practical applications. Conversely, the second approach produces active, flexible and nanostructured quinine-based films (Tg = -14 °C, Young's modulus = 1.3 GPa), which are able to release antimicrobial compounds against E. coli that, remarkably, are noncytotoxic against mouse macrophage and human dermal fibroblast cells. These kinds of active cinchona alkaloid-based coatings are easy to prepare by means of simple, solvent-free, melt quaternization/spreading procedures at a relatively low temperature (120 °C), making this second approach one of the most facile reported procedures to date to produce active nanostructured bio-based films.
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Affiliation(s)
- Alejandro Latorre-Sánchez
- Centro de Física de Materiales (CSIC, UPV/EHU) and Materials Physics Center MPC, Paseo Manuel de Lardizabal 5, E-20018 San Sebastián, Spain.
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Tran P, Arnett A, Jarvis C, Mosley T, Tran K, Hanes R, Webster D, Mitchell K, Dominguez L, Hamood A, Reid TW. Organo-Selenium Coatings Inhibit Gram-Negative and Gram-Positive Bacterial Attachment to Ophthalmic Scleral Buckle Material. Transl Vis Sci Technol 2017; 6:1. [PMID: 28875063 PMCID: PMC5580502 DOI: 10.1167/tvst.6.5.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Accepted: 06/19/2017] [Indexed: 11/24/2022] Open
Abstract
Purpose Biofilm formation is a problem for solid and sponge-type scleral buckles. This can lead to complications that require removal of the buckle, and result in vision loss due to related ocular morbidity, primarily infection, or recurrent retinal detachment. We investigate the ability of a covalent organo-selenium coating to inhibit biofilm formation on a scleral buckle. Methods Sponge and solid Labtican brand scleral buckles were coated with organo-selenium coupled to a silyation reagent. Staphylococcus aureus biofilm formation was monitored by a standard colony-forming unit assay and the confocal laser scanning microscopy, while Pseudomonas aeruginosa biofilm formation was examined by scanning electron microscopy. Stability studies were done, by soaking in phosphate buffer saline (PBS) at room temperature for 2 months. Toxicity against human corneal epithelial cell was examined by growing the cells in the presence of organo-selenium–coated scleral buckles. Results The organo-selenium coating inhibited biofilm formation by gram-negative and gram-positive bacteria. The buckle coatings also were shown to be fully active after soaking in PBS for 2 months. The organo-selenium coatings had no effect on the viability of human corneal epithelial cells. Conclusions Organo-selenium can be used to covalently coat a scleral buckle, which is stable and inhibits biofilm formation for gram-negative and gram-positive bacteria. The organo-selenium buckle coating was stable and nontoxic to cell culture. Translational Relevance This technology provides a means to inhibit bacterial attachment to devices attached to the eye, without damage to ocular cells.
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Affiliation(s)
- Phat Tran
- Department of Ophthalmology and Visual Sciences, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Avery Arnett
- Department of Ophthalmology and Visual Sciences, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Courtney Jarvis
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Thomas Mosley
- Department of Ophthalmology and Visual Sciences, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Khien Tran
- Department of Ophthalmology and Visual Sciences, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | | | - Dan Webster
- Department of Medical Education, Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Kelly Mitchell
- Department of Ophthalmology and Visual Sciences, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Leo Dominguez
- Department of Ophthalmology and Visual Sciences, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Abdul Hamood
- Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Ted W Reid
- Department of Ophthalmology and Visual Sciences, Texas Tech University Health Sciences Center, Lubbock, TX, USA.,Department of Immunology and Molecular Microbiology, Texas Tech University Health Sciences Center, Lubbock, TX, USA
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Organoselenium Polymer Inhibits Biofilm Formation in Polypropylene Contact Lens Case Material. Eye Contact Lens 2017; 43:110-115. [DOI: 10.1097/icl.0000000000000239] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Wansapura PT, Dassanayake RS, Hamood A, Tran P, Moussa H, Abidi N. Preparation of chitin-CdTe quantum dots films and antibacterial effect onStaphylococcus aureusandPseudomonas aeruginosa. J Appl Polym Sci 2017. [DOI: 10.1002/app.44904] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Poorna Tharaka Wansapura
- Department of Plant and Soil Science, Fiber and Biopolymer Research Institute; Texas Tech University; Lubbock Texas 79409
| | - Rohan Suranga Dassanayake
- Department of Plant and Soil Science, Fiber and Biopolymer Research Institute; Texas Tech University; Lubbock Texas 79409
| | - Abdul Hamood
- Department of Microbiology and Immunology; Texas Tech University Health Science Center; Lubbock Texas 79430
| | - Phat Tran
- Department of Microbiology and Immunology; Texas Tech University Health Science Center; Lubbock Texas 79430
| | - Hanna Moussa
- Department of Mechanical Engineering; Texas Tech University; Lubbock Texas 79409
| | - Noureddine Abidi
- Department of Plant and Soil Science, Fiber and Biopolymer Research Institute; Texas Tech University; Lubbock Texas 79409
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Kather M, Skischus M, Kandt P, Pich A, Conrads G, Neuss S. Funktionelle Isoeugenol-modifizierte Nanogel-Beschichtungen für biologische Grenzflächen. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201609180] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Michael Kather
- Funktionelle und interaktive Polymere; DWI - Leibniz Institut für Interaktive Materialien; Forckenbeckstraße 50 52056 Aachen Deutschland
| | - Merle Skischus
- Lehr- und Forschungsgebiet Orale Mikrobiologie und Immunologie der Klinik für Zahnerhaltung, ZPP, Uniklinik; RWTH Aachen; Deutschland
| | - Pierre Kandt
- Institut für Pathologie und Helmholtz Institut für Biomedizinische Technologien - Zell- und Molekularbiologie an Grenzflächen, Uniklinik; RWTH Aachen; Deutschland
| | - Andrij Pich
- Funktionelle und interaktive Polymere; DWI - Leibniz Institut für Interaktive Materialien; Forckenbeckstraße 50 52056 Aachen Deutschland
| | - Georg Conrads
- Lehr- und Forschungsgebiet Orale Mikrobiologie und Immunologie der Klinik für Zahnerhaltung, ZPP, Uniklinik; RWTH Aachen; Deutschland
| | - Sabine Neuss
- Institut für Pathologie und Helmholtz Institut für Biomedizinische Technologien - Zell- und Molekularbiologie an Grenzflächen, Uniklinik; RWTH Aachen; Deutschland
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Kather M, Skischus M, Kandt P, Pich A, Conrads G, Neuss S. Functional Isoeugenol-Modified Nanogel Coatings for the Design of Biointerfaces. Angew Chem Int Ed Engl 2017; 56:2497-2502. [DOI: 10.1002/anie.201609180] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Indexed: 12/16/2022]
Affiliation(s)
- Michael Kather
- Funktionelle und interaktive Polymere; DWI-Leibniz Institut für Interaktive Materialien; Forckenbeckstrasse 50 52056 Aachen Germany
| | - Merle Skischus
- Lehr- und Forschungsgebiet Orale Mikrobiologie und Immunologie der Klinik für Zahnerhaltung, ZPP, Uniklinik; RWTH Aachen; Germany
| | - Pierre Kandt
- Institut für Pathologie und Helmholtz Institut für Biomedizinische Technologien-Zell- und Molekularbiologie an Grenzflächen, Uniklinik; RWTH Aachen; Germany
| | - Andrij Pich
- Funktionelle und interaktive Polymere; DWI-Leibniz Institut für Interaktive Materialien; Forckenbeckstrasse 50 52056 Aachen Germany
| | - Georg Conrads
- Lehr- und Forschungsgebiet Orale Mikrobiologie und Immunologie der Klinik für Zahnerhaltung, ZPP, Uniklinik; RWTH Aachen; Germany
| | - Sabine Neuss
- Institut für Pathologie und Helmholtz Institut für Biomedizinische Technologien-Zell- und Molekularbiologie an Grenzflächen, Uniklinik; RWTH Aachen; Germany
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36
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Oliveira SS, Cunha RL, Silva MS. 77Se and 125Te NMR spectroscopy for enantiopurity determination of chalcogen amines. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.08.091] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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37
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Sancineto L, Piccioni M, De Marco S, Pagiotti R, Nascimento V, Braga AL, Santi C, Pietrella D. Diphenyl diselenide derivatives inhibit microbial biofilm formation involved in wound infection. BMC Microbiol 2016; 16:220. [PMID: 27654924 PMCID: PMC5031294 DOI: 10.1186/s12866-016-0837-x] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Accepted: 09/13/2016] [Indexed: 12/13/2022] Open
Abstract
Background Organoselenium compounds have antimicrobial activity against some bacteria and fungi; furthermore, the antioxidant activity of diselenides has been demonstrated. The aim of the present work was to examine the in vitro minimal inhibitory concentration of a panel of differently substituted diselenides and their effectiveness in inhibiting biofilm formation and dispersing preformed microbial biofilm of Staphylococcus epidermidis, Staphylococcus aureus, Streptococcus pyogenes and Pseudomonas aeruginosa and the yeast Candida albicans, all involved in wound infections. Moreover, the cytotoxicity of the compounds was determined in human dermal fibroblast and keratinocytes. In closing, we tested their direct antioxidant activity. Results Diselenides showed different antimicrobial activity, depending on the microorganism. All diselenides demonstrated a good antibiofilm activity against S. aureus and S. epidermidis, the compounds camphor diselenide, bis[ethyl-N-(2’-selenobenzoyl) glycinate] and bis[2’-seleno-N-(1-methyl-2-phenylethyl) benzamide] were active against S. pyogenes and C. albicans biofilm while only diselenides 2,2’-diselenidyldibenzoic acid and bis[ethyl-N-(2’-selenobenzoyl) glycinate] were effective against P. aeruginosa. Moreover, the compounds bis[ethyl-N-(2’-selenobenzoyl) glycinate] and bis[2’-seleno-N-(1-methyl-2-phenylethyl) benzamide] showed an antioxidant activity at concentrations lower than the 50 % of cytotoxic concentration. Conclusions Because microbial biofilms are implicated in chronic infection of wounds and treatment failure, the combination of antimicrobial activity and potential radical scavenging effects may contribute to the improvement of wound healing. Therefore, this study suggests that bis[ethylN-(2’-selenobenzoyl) glycinate] and bis[2’-seleno-N-(1-methyl-2-phenylethyl) benzamide] are promising compounds to be used in preventing and treating microbial wound infections.
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Affiliation(s)
- Luca Sancineto
- Department of Pharmaceutical Sciences, University of Perugia, Via del Giochetto, 06122, Perugia, Italy
| | - Miranda Piccioni
- Department of Pharmaceutical Sciences, University of Perugia, Via del Giochetto, 06122, Perugia, Italy
| | - Stefania De Marco
- Department of Pharmaceutical Sciences, University of Perugia, Via del Giochetto, 06122, Perugia, Italy
| | - Rita Pagiotti
- Department of Pharmaceutical Sciences, University of Perugia, Via del Giochetto, 06122, Perugia, Italy
| | - Vanessa Nascimento
- Laboratorio de Sıntese de Substancias de Selenio Bioativas, Centro de Ciencias Fısicas e Matematicas, Departamento de Quımica, Universidade Federal de Santa Catarina, 88040-900, Florianopolis, SC, Brazil
| | - Antonio Luiz Braga
- Laboratorio de Sıntese de Substancias de Selenio Bioativas, Centro de Ciencias Fısicas e Matematicas, Departamento de Quımica, Universidade Federal de Santa Catarina, 88040-900, Florianopolis, SC, Brazil
| | - Claudio Santi
- Department of Pharmaceutical Sciences, University of Perugia, Via del Giochetto, 06122, Perugia, Italy
| | - Donatella Pietrella
- Department of Pharmaceutical Sciences, University of Perugia, Via del Giochetto, 06122, Perugia, Italy.
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Sahu N, Soni D, Chandrashekhar B, Satpute DB, Saravanadevi S, Sarangi BK, Pandey RA. Synthesis of silver nanoparticles using flavonoids: hesperidin, naringin and diosmin, and their antibacterial effects and cytotoxicity. INTERNATIONAL NANO LETTERS 2016. [DOI: 10.1007/s40089-016-0184-9] [Citation(s) in RCA: 91] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Sub-Optimal Treatment of Bacterial Biofilms. Antibiotics (Basel) 2016; 5:antibiotics5020023. [PMID: 27338489 PMCID: PMC4929437 DOI: 10.3390/antibiotics5020023] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 05/08/2016] [Accepted: 06/13/2016] [Indexed: 01/22/2023] Open
Abstract
Bacterial biofilm is an emerging clinical problem recognized in the treatment of infectious diseases within the last two decades. The appearance of microbial biofilm in clinical settings is steadily increasing due to several reasons including the increased use of quality of life-improving artificial devices. In contrast to infections caused by planktonic bacteria that respond relatively well to standard antibiotic therapy, biofilm-forming bacteria tend to cause chronic infections whereby infections persist despite seemingly adequate antibiotic therapy. This review briefly describes the responses of biofilm matrix components and biofilm-associated bacteria towards sub-lethal concentrations of antimicrobial agents, which may include the generation of genetic and phenotypic variabilities. Clinical implications of bacterial biofilms in relation to antibiotic treatments are also discussed.
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40
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Tan LC, Nancharaiah YV, van Hullebusch ED, Lens PNL. Selenium: environmental significance, pollution, and biological treatment technologies. Biotechnol Adv 2016; 34:886-907. [PMID: 27235190 DOI: 10.1016/j.biotechadv.2016.05.005] [Citation(s) in RCA: 220] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Revised: 04/26/2016] [Accepted: 05/21/2016] [Indexed: 10/21/2022]
Abstract
Selenium is an essential trace element needed for all living organisms. Despite its essentiality, selenium is a potential toxic element to natural ecosystems due to its bioaccumulation potential. Though selenium is found naturally in the earth's crust, especially in carbonate rocks and volcanic and sedimentary soils, about 40% of the selenium emissions to atmospheric and aquatic environments are caused by various industrial activities such as mining-related operations. In recent years, advances in water quality and pollution monitoring have shown that selenium is a contaminant of potential environmental concern. This has practical implications on industry to achieve the stringent selenium regulatory discharge limit of 5μgSeL(-1) for selenium containing wastewaters set by the United States Environmental Protection Agency. Over the last few decades, various technologies have been developed for the treatment of selenium-containing wastewaters. Biological selenium reduction has emerged as the leading technology for removing selenium from wastewaters since it offers a cheaper alternative compared to physico-chemical treatments and is suitable for treating dilute and variable selenium-laden wastewaters. Moreover, biological treatment has the advantage of forming elemental selenium nanospheres which exhibit unique optical and spectral properties for various industrial applications, i.e. medical, electrical, and manufacturing processes. However, despite the advances in biotechnology employing selenium reduction, there are still several challenges, particularly in achieving stringent discharge limits, the long-term stability of biogenic selenium and predicting the fate of bioreduced selenium in the environment. This review highlights the significance of selenium in the environment, health, and industry and biotechnological advances made in the treatment of selenium contaminated wastewaters. The challenges and future perspectives are overviewed considering recent biotechnological advances in the management of these selenium-laden wastewaters.
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Affiliation(s)
- Lea Chua Tan
- UNESCO-IHE Institute for Water Education, Westvest 7, 2611 AX Delft, The Netherlands.
| | - Yarlagadda V Nancharaiah
- Biofouling and Biofilm Process Section, Water and Steam Chemistry Division, Bhabha Atomic Research Centre Kalpakkam, 603102 Tamil Nadu, India.
| | - Eric D van Hullebusch
- Université Paris-Est, Laboratoire Géomatériaux et Environnement (EA 4508), UPEM, 77454 Marne-la-Vallée, France.
| | - Piet N L Lens
- UNESCO-IHE Institute for Water Education, Westvest 7, 2611 AX Delft, The Netherlands; Department of Chemistry and Bioengineering, Tampere University of Technology, P.O-Box 541, Tampere, Finland.
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Bhattacharya M, Wozniak DJ, Stoodley P, Hall-Stoodley L. Prevention and treatment of Staphylococcus aureus biofilms. Expert Rev Anti Infect Ther 2015; 13:1499-516. [PMID: 26646248 DOI: 10.1586/14787210.2015.1100533] [Citation(s) in RCA: 168] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
S. aureus colonizes both artificial and tissue surfaces in humans causing chronic persistent infections that are difficult to cure. It is a notorious pathogen due to its antibiotic recalcitrance and phenotypic adaptability, both of which are facilitated by its ability to develop biofilms. S. aureus biofilms challenge conventional anti-infective approaches, most notably antibiotic therapy. Therefore there is an unmet need to develop and include parallel approaches that target S. aureus biofilm infections. This review discusses two broad anti-infective strategies: (1) preventative approaches (anti-biofilm surface coatings, the inclusion of biofilm-specific vaccine antigens); and (2) approaches aimed at eradicating established S. aureus biofilms, particularly those associated with implant infections. Advances in understanding the distinct nature of S. aureus biofilm development and pathogenesis have led to growing optimism in S. aureus biofilm targeted anti-infective strategies. Further research is needed however, to see the successful administration and validation of these approaches to the diverse types of infections caused by S. aureus biofilms from multiple clinical strains.
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Affiliation(s)
- Mohini Bhattacharya
- a Department of Microbiology , The Ohio State University , Columbus , OH , USA
| | - Daniel J Wozniak
- a Department of Microbiology , The Ohio State University , Columbus , OH , USA.,b Department of Microbial Infection and Immunity , The Ohio State University College of Medicine , Columbus , OH , USA.,c The Center for Microbial Interface Biology, The Ohio State University , Columbus , OH , USA
| | - Paul Stoodley
- b Department of Microbial Infection and Immunity , The Ohio State University College of Medicine , Columbus , OH , USA.,c The Center for Microbial Interface Biology, The Ohio State University , Columbus , OH , USA.,d Department of Orthopedics , The Ohio State University College of Medicine , Columbus , OH , USA.,e Department of Engineering Sciences, National Centre for Advanced Tribology at Southampton (nCATS) , University of Southampton , Southampton , UK
| | - Luanne Hall-Stoodley
- b Department of Microbial Infection and Immunity , The Ohio State University College of Medicine , Columbus , OH , USA.,c The Center for Microbial Interface Biology, The Ohio State University , Columbus , OH , USA
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Nanoscale Plasma Coating Inhibits Formation of Staphylococcus aureus Biofilm. Antimicrob Agents Chemother 2015; 59:7308-15. [PMID: 26369955 DOI: 10.1128/aac.01944-15] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 09/06/2015] [Indexed: 11/20/2022] Open
Abstract
Staphylococcus aureus commonly infects medical implants or devices, with devastating consequences for the patient. The infection begins with bacterial attachment to the device, followed by bacterial multiplication over the surface of the device, generating an adherent sheet of bacteria known as a biofilm. Biofilms resist antimicrobial therapy and promote persistent infection, making management difficult to futile. Infections might be prevented by engineering the surface of the device to discourage bacterial attachment and multiplication; however, progress in this area has been limited. We have developed a novel nanoscale plasma coating technology to inhibit the formation of Staphylococcus aureus biofilms. We used monomeric trimethylsilane (TMS) and oxygen to coat the surfaces of silicone rubber, a material often used in the fabrication of implantable medical devices. By quantitative and qualitative analysis, the TMS/O2 coating significantly decreased the in vitro formation of S. aureus biofilms; it also significantly decreased in vivo biofilm formation in a mouse model of foreign-body infection. Further analysis demonstrated TMS/O2 coating significantly changed the protein adsorption, which could lead to reduced bacterial adhesion and biofilm formation. These results suggest that TMS/O2 coating can be used to effectively prevent medical implant-related infections.
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Aribi M, Meziane W, Habi S, Boulatika Y, Marchandin H, Aymeric JL. Macrophage Bactericidal Activities against Staphylococcus aureus Are Enhanced In Vivo by Selenium Supplementation in a Dose-Dependent Manner. PLoS One 2015; 10:e0135515. [PMID: 26340099 PMCID: PMC4560415 DOI: 10.1371/journal.pone.0135515] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2015] [Accepted: 07/22/2015] [Indexed: 11/27/2022] Open
Abstract
Background Dietary selenium is of fundamental importance to maintain optimal immune function and enhance immunity during infection. To this end, we examined the effect of selenium on macrophage bactericidal activities against Staphylococcus aureus. Methods Assays were performed in golden Syrian hamsters and peritoneal macrophages cultured with S. aureus and different concentrations of selenium. Results Infected and selenium-supplemented animals have significantly decreased levels of serum nitric oxide (NO) production when compared with infected but non-selenium-supplemented animals at day 7 post-infection (p < 0.05). A low dose of 5 ng/mL selenium induced a significant decrease in macrophage NO production, but significant increase in hydrogen peroxide (H2O2) levels (respectively, p = 0.009, p < 0.001). The NO production and H2O2 levels were significantly increased with increasing concentrations of selenium; the optimal macrophage activity levels were reached at 20 ng/mL. The concentration of 5 ng/mL of selenium induced a significant decrease in the bacterial arginase activity but a significant increase in the macrophage arginase activity. The dose of 20 ng/mL selenium induced a significant decrease of bacterial growth (p < 0.0001) and a significant increase in macrophage phagocytic activity, NO production/arginase balance and S. aureus killing (for all comparisons, p < 0.001). Conclusions Selenium acts in a dose-dependent manner on macrophage activation, phagocytosis and bacterial killing suggesting that inadequate doses may cause a loss of macrophage bactericidal activities and that selenium supplementation could enhance the in vivo control of immune response to S. aureus.
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Affiliation(s)
- Mourad Aribi
- Laboratory of Applied Molecular Biology and Immunology, Department of Biology, University of Tlemcen, 13000, Tlemcen, Algeria
- * E-mail:
| | - Warda Meziane
- Laboratory of Applied Molecular Biology and Immunology, Department of Biology, University of Tlemcen, 13000, Tlemcen, Algeria
| | - Salim Habi
- Laboratory of Applied Molecular Biology and Immunology, Department of Biology, University of Tlemcen, 13000, Tlemcen, Algeria
| | - Yasser Boulatika
- Laboratory of Applied Molecular Biology and Immunology, Department of Biology, University of Tlemcen, 13000, Tlemcen, Algeria
| | - Hélène Marchandin
- Université Montpellier 1, UMR 5569 HydroSciences Montpellier, Équipe Pathogènes Hydriques Santé Environnements, 34093, Montpellier, Cedex 5, France
- Centre Hospitalier Régional Universitaire, Laboratoire de Bactériologie, 34295, Montpellier, Cedex 5, France
| | - Jean-Luc Aymeric
- UM2-INRA, UMR1333, Laboratoire Diversité, Génomes et Interactions Microorganismes Insectes, Université de Montpellier, Bataillon, 34095, Montpellier, Cedex 05, France
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Wu H, Moser C, Wang HZ, Høiby N, Song ZJ. Strategies for combating bacterial biofilm infections. Int J Oral Sci 2015; 7:1-7. [PMID: 25504208 PMCID: PMC4817533 DOI: 10.1038/ijos.2014.65] [Citation(s) in RCA: 542] [Impact Index Per Article: 60.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/16/2014] [Indexed: 12/30/2022] Open
Abstract
Formation of biofilm is a survival strategy for bacteria and fungi to adapt to their living environment, especially in the hostile environment. Under the protection of biofilm, microbial cells in biofilm become tolerant and resistant to antibiotics and the immune responses, which increases the difficulties for the clinical treatment of biofilm infections. Clinical and laboratory investigations demonstrated a perspicuous correlation between biofilm infection and medical foreign bodies or indwelling devices. Clinical observations and experimental studies indicated clearly that antibiotic treatment alone is in most cases insufficient to eradicate biofilm infections. Therefore, to effectively treat biofilm infections with currently available antibiotics and evaluate the outcomes become important and urgent for clinicians. The review summarizes the latest progress in treatment of clinical biofilm infections and scientific investigations, discusses the diagnosis and treatment of different biofilm infections and introduces the promising laboratory progress, which may contribute to prevention or cure of biofilm infections. We conclude that, an efficient treatment of biofilm infections needs a well-established multidisciplinary collaboration, which includes removal of the infected foreign bodies, selection of biofilm-active, sensitive and well-penetrating antibiotics, systemic or topical antibiotic administration in high dosage and combinations, and administration of anti-quorum sensing or biofilm dispersal agents.
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Affiliation(s)
- Hong Wu
- 1] Department of Clinical Microbiology, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, Denmark [2] Department of International Health, Immunology & Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Claus Moser
- Department of Clinical Microbiology, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, Denmark
| | - Heng-Zhuang Wang
- Department of Clinical Microbiology, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, Denmark
| | - Niels Høiby
- 1] Department of Clinical Microbiology, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, Denmark [2] Department of International Health, Immunology & Microbiology, University of Copenhagen, Copenhagen, Denmark
| | - Zhi-Jun Song
- 1] Department of Clinical Microbiology, Rigshospitalet, University Hospital of Copenhagen, Copenhagen, Denmark [2] Department of Clinical Microbiology, Slagelse Hospital, Slagelse, Denmark
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45
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Tran PL, Hamood AN, de Souza A, Schultz G, Liesenfeld B, Mehta D, Reid TW. A study on the ability of quaternary ammonium groups attached to a polyurethane foam wound dressing to inhibit bacterial attachment and biofilm formation. Wound Repair Regen 2015; 23:74-81. [DOI: 10.1111/wrr.12244] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Accepted: 11/13/2014] [Indexed: 01/04/2023]
Affiliation(s)
- Phat L. Tran
- Departments of Ophthalmology and Visual Sciences; School of Medicine; Texas Tech University Health Sciences Center; Lubbock Texas
| | - Abdul N. Hamood
- Departments of Medical Microbiology and Immunology; Texas Tech University Health Sciences Center; Lubbock Texas
| | | | - Gregory Schultz
- Department of Obstetrics and Gynecology; College of Medicine; University of Florida; Gainesville Florida
| | | | | | - Ted W. Reid
- Departments of Ophthalmology and Visual Sciences; School of Medicine; Texas Tech University Health Sciences Center; Lubbock Texas
- Departments of Medical Microbiology and Immunology; Texas Tech University Health Sciences Center; Lubbock Texas
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Elmasri WA, Yang T, Tran P, Hegazy MEF, Hamood AN, Mechref Y, Paré PW. Teucrium polium phenylethanol and iridoid glycoside characterization and flavonoid inhibition of biofilm-forming Staphylococcus aureus. JOURNAL OF NATURAL PRODUCTS 2015; 78:2-9. [PMID: 25524452 DOI: 10.1021/np5004092] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The chemical composition and biofilm regulation of 15 metabolites from Teucrium polium are reported. Compounds were isolated from a CH2Cl2-MeOH extract of the aerial parts of the plant and included iridoid and phenylethanol glycosides and a monoterpenoid, together with nine known compounds. The structures were elucidated based on standard spectroscopic (UV, (1)H and (13)C NMR), 2D NMR ((1)H-(1)H COSY, HMQC, HMBC, and NOESY), and/or LC-ESIMS/MS data analyses. Inhibition of the biofilm-forming strain Staphylococcus aureus was observed with exposure to compounds 7 and 8.
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Affiliation(s)
- Wael A Elmasri
- Department of Chemistry and Biochemistry, Texas Tech University , Lubbock, Texas 79409, United States
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Khan MN, Karamthulla S, Choudhury LH, Haque Faizi MS. Ultrasound assisted multicomponent reactions: a green method for the synthesis of highly functionalized selenopyridines using reusable polyethylene glycol as reaction medium. RSC Adv 2015. [DOI: 10.1039/c5ra02403j] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A simple and benign one-pot protocol for the synthesis of 2-amino selenopyrindine derivatives 4 has been developed using ultrasound assisted multicomponent reactions of aldehydes, malononitrile and benzeneselenol in PEG-400.
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Affiliation(s)
- Md. Nasim Khan
- Department of Chemistry
- Indian Institute of Technology Patna
- Patna-800 013
- India
| | - Shaik Karamthulla
- Department of Chemistry
- Indian Institute of Technology Patna
- Patna-800 013
- India
| | - Lokman H. Choudhury
- Department of Chemistry
- Indian Institute of Technology Patna
- Patna-800 013
- India
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Sakamoto A, Terui Y, Horie C, Fukui T, Masuzawa T, Sugawara S, Shigeta K, Shigeta T, Igarashi K, Kashiwagi K. Antibacterial effects of protruding and recessed shark skin micropatterned surfaces of polyacrylate plate with a shallow groove. FEMS Microbiol Lett 2014; 361:10-16. [DOI: 10.1111/1574-6968.12604] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 09/15/2014] [Accepted: 09/15/2014] [Indexed: 12/01/2022] Open
Affiliation(s)
- Akihiko Sakamoto
- Faculty of Pharmacy; Chiba Institute of Science; Choshi Chiba Japan
| | - Yusuke Terui
- Faculty of Pharmacy; Chiba Institute of Science; Choshi Chiba Japan
| | - Chihiro Horie
- Faculty of Pharmacy; Chiba Institute of Science; Choshi Chiba Japan
| | - Takashi Fukui
- Faculty of Pharmacy; Chiba Institute of Science; Choshi Chiba Japan
| | | | | | | | | | | | - Keiko Kashiwagi
- Faculty of Pharmacy; Chiba Institute of Science; Choshi Chiba Japan
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Wang JC, Hamood AN, Saadeh C, Cunningham MJ, Yim MT, Cordero J. Strategies to prevent biofilm-based tympanostomy tube infections. Int J Pediatr Otorhinolaryngol 2014; 78:1433-8. [PMID: 25060938 DOI: 10.1016/j.ijporl.2014.05.025] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 05/09/2014] [Accepted: 05/20/2014] [Indexed: 01/08/2023]
Abstract
OBJECTIVE To review the potential contributory role of biofilms to post-tympanstomy tube otorrhea and plugging as well as the available interventions currently utilized to prevent biofilm formation on tympanostomy tubes. DATA SOURCES A literature review was performed utilizing the MEDLINE/Pubmed database from 1980 to 2013. REVIEW METHODS Electronic database was searched with combinations of keywords "biofilm", "tympanostomy tube", "ventilation tube", and "post-tympanostomy tube otorrhea". RESULTS Two of the most common sequelae that occur after tympanostomy tube insertion are otorrhea and tube occlusion. There is an increased evidence supporting a role for biofilms in the pathogenesis of otitis media. In this review, we have shown a multitude of novel approaches for prevention of biofilm associated sequelae of otitis media with effusion. These interventions include (i) changing the inherent composition of the tube itself, (ii) coating the tubes with antibiotics, polymers, plant extracts, or other biofilm-resistant materials, (iii) tubal impregnation with antimicrobial compounds, and (iv) surface alterations of the tube by ion-bombardment or surface ionization. CONCLUSION Currently, there is not one type of tympanostomy tube in which bacteria will not adhere. The challenges of treating chronic post-tympanostomy tube otorrhea and tube occlusion indicate the need for further research in optimization of tympanostomy tube design in addition to development of novel therapies.
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Affiliation(s)
- James C Wang
- School of Medicine, Texas Tech University Health Sciences Center, 3601 4th Street STOP 8312, Lubbock, TX 79430, USA.
| | - Abdul N Hamood
- Department of Microbiology & Infectious Diseases, Texas Tech University Health Sciences Center, Lubbock, TX, USA
| | - Charles Saadeh
- School of Medicine, Texas Tech University Health Sciences Center, 3601 4th Street STOP 8312, Lubbock, TX 79430, USA
| | - Michael J Cunningham
- Department of Otolaryngology and Communication Enhancement, Children's Hospital Boston, Boston, MA, USA
| | - Michael T Yim
- Department of Otolaryngology - Head and Neck Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Joehassin Cordero
- Division of Otolaryngology, Department of Surgery, Texas Tech University Health Sciences Center, Lubbock, TX, USA
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Tran PL, Patel S, Hamood AN, Enos T, Mosley T, Jarvis C, Desai A, Lin P, Reid TW. A Novel Organo-Selenium Bandage that Inhibits Biofilm Development in a Wound by Gram-Positive and Gram-Negative Wound Pathogens. Antibiotics (Basel) 2014; 3:435-49. [PMID: 27025754 PMCID: PMC4790367 DOI: 10.3390/antibiotics3030435] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 08/07/2014] [Accepted: 08/19/2014] [Indexed: 11/16/2022] Open
Abstract
Biofilm formation in wounds is a serious problem which inhibits proper wound healing. One possible contributor to biofilm formation in a wound is the bacteria growing within the overlying bandage. To test this mechanism, we used bandages that contained a coating of organo-selenium that was covalently attached to the bandage. We tested the ability of this coating to kill bacteria on the bandage and in the underlying tissue. The bandage material was tested with both lab strains and clinical isolates of Staphylococcus aureus, Pseudomonas aeruginosa and Staphylococcus epidermidis. It was found that the organo-selenium coated bandage showed inhibition, of biofilm formation on the bandage in vitro (7–8 logs), with all the different bacteria tested, at selenium concentrations in the coating of less than 1.0%. These coatings were found to remain stable for over one month in aqueous solution, 15 min in boiling water, and over 6 years at room temperature. The bandages were also tested on a mouse wound model where the bacteria were injected between the bandage and the wound. Not only did the selenium bandage inhibit biofilm formation in the bandage, but it also inhibited biofilm formation in the wound tissue. Since selenium does not leave the bandage, this would appear to support the idea that a major player in wound biofilm formation is bacteria which grows in the overlying bandage.
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Affiliation(s)
- Phat L Tran
- Departments of Ophthalmology and Visual Sciences, School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA.
| | - Saurabh Patel
- Department of Neonatology, University of Illinois, Chicago, IL 60607, USA.
| | - Abdul N Hamood
- Departments of Medical Microbiology and Immunology, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA.
| | - Tyler Enos
- South Western Medical Center, University of Texas, Dallas, TX 75390, USA.
| | - Thomas Mosley
- Departments of Ophthalmology and Visual Sciences, School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA.
| | - Courtney Jarvis
- Departments of Ophthalmology and Visual Sciences, School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA.
| | - Akash Desai
- Departments of Ophthalmology and Visual Sciences, School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA.
| | - Pamela Lin
- Departments of Ophthalmology and Visual Sciences, School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA.
| | - Ted W Reid
- Departments of Ophthalmology and Visual Sciences, School of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA.
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