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Westerway SC, Basseal JM, Abramowicz J, Moran C. Recommendations for the Cleaning of Endocavity Ultrasound Transducers Between Patients. ULTRASOUND IN MEDICINE & BIOLOGY 2024; 50:775-778. [PMID: 38485533 DOI: 10.1016/j.ultrasmedbio.2024.02.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 02/15/2024] [Accepted: 02/17/2024] [Indexed: 05/01/2024]
Abstract
The COVID-19 pandemic highlighted the importance of infection prevention and control measures for all medical procedures, including ultrasound examinations. As the use of ultrasound increases across more medical modalities, including point-of-care ultrasound, so does the risk of possible transmission from equipment to patients and patients to patients. This is particularly relevant for endocavity transducers, such as trans-vaginal, trans-rectal and trans-oesophageal, which could be contaminated with organisms from blood, mucosal, genital or rectal secretions. This article proports to update the WFUMB 2017 guidelines which focussed on the cleaning and disinfection of trans-vaginal ultrasound transducers between patients.
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Affiliation(s)
| | - Jocelyne M Basseal
- Sydney Infectious Diseases Institute, Faculty of Medicine and Health, University of Sydney, NSW, Australia
| | - Jacques Abramowicz
- Department of Obstetrics and Gynecology, University of Chicago, Chicago, Illinois, USA
| | - Carmel Moran
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK
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Szalai EÁ, Teutsch B, Babay V, Galvács A, Hegyi P, Hársfalvi P, Pál R, Varga G, Lohinai ZM, Kerémi B. Hyperpure chlorine dioxide versus chlorhexidine in intra-oral halitosis (ODOR trial) - protocol of a double-blinded, double-arm, parallel non-inferiority pilot randomized controlled trial. BDJ Open 2024; 10:35. [PMID: 38769314 PMCID: PMC11106080 DOI: 10.1038/s41405-024-00221-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 04/22/2024] [Accepted: 04/23/2024] [Indexed: 05/22/2024] Open
Abstract
INTRODUCTION Intra-oral halitosis (IOH) is the most common type of bad breath; its consequences impair quality of life. However, evidence-based treatment protocols and guidelines are lacking. Our aim is to investigate the effectiveness of chlorine dioxide as an applicable complementary treatment modality in IOH after tongue cleaning. METHODS AND ANALYSIS The ODOR trial will be a single-center, double-blinded, parallel-group, double-armed pilot randomized controlled trial with a non-inferiority design. The efficacy of hyperpure chlorine dioxide will be compared to chlorhexidine mouthwash. We plan to investigate the short-term effects of the intervention over a 3-h period. The primary endpoint will be changes in organoleptic test scores. At the end of the pilot investigation of the first 30 patients each, sample size calculation will be performed. If feasible, the investigators will continue the study by enrolling more patients. TRIAL REGISTRATION The trial has been registered at ClinicalTrials.gov (NCT06219226).
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Affiliation(s)
- Eszter Ágnes Szalai
- Department of Restorative Dentistry and Endodontics, Semmelweis University, Budapest, Hungary
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Brigitta Teutsch
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
- Department of Radiology, Medical Imaging Centre, Semmelweis University, Budapest, Hungary
- Institute for Translational Medicine, Medical School, University of Pécs, Pécs, Hungary
| | - Viktória Babay
- Faculty of Dentistry, Semmelweis University, Budapest, Hungary
| | - Adél Galvács
- Faculty of Dentistry, Semmelweis University, Budapest, Hungary
| | - Péter Hegyi
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
- Institute for Translational Medicine, Medical School, University of Pécs, Pécs, Hungary
- Division of Pancreatic Diseases, Semmelweis University, Budapest, Hungary
| | - Péter Hársfalvi
- University of Veterinary Medicine Budapest, Department of Biostatistics, Budapest, Hungary
- BiTrial Clinical Research, Budapest, Hungary
| | | | - Gábor Varga
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
- Department of Oral Biology, Semmelweis University, Budapest, Hungary
| | - Zsolt M Lohinai
- Department of Restorative Dentistry and Endodontics, Semmelweis University, Budapest, Hungary
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Beáta Kerémi
- Department of Restorative Dentistry and Endodontics, Semmelweis University, Budapest, Hungary.
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary.
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Helou M, Mahdi A, Abou Fayad A, Sleiman A, Matar GM, Zoghbi S, Madani T, Husni R. Antimicrobial effects of chlorine dioxide in a hospital setting. Sci Rep 2023; 13:22866. [PMID: 38129523 PMCID: PMC10739700 DOI: 10.1038/s41598-023-49997-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023] Open
Abstract
Chlorine dioxide is a powerful disinfectant with strong antibacterial properties. We conducted a study at different sites of the Lebanese American University Medical Center-Rizk Hospital to determine the efficacy of the ECOM air mask in decreasing the particle load. Air cultures were obtained from three different locations, namely the patients' elevator, visitors' elevator and mobile clinic and the number of colonies grown on each type of agar was determined. We also measured particle counts at the three sites both at baseline and after placement of the ECOM air mask. After 7 days of ECOM air mask use, the numbers of colonies grown on all types of media was decreased by 20-100% versus the baseline values. The counts of particles of different diameters (0.3, 0.5 and 5 µm) were decreased at all three sampled sites. This study highlighted the efficacy of the ECOM air mask. The utility of the gaseous form of ClO2 as an antiseptic in the hospital setting appears promising.
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Affiliation(s)
- Mariana Helou
- Division of Emergency, Department of Internal Medicine, School of Medicine, Lebanese American University, Beirut, Lebanon
| | - Ahmad Mahdi
- Division of Infectious Diseases, Department of Internal Medicine, School of Medicine, Lebanese American University, Beirut, Lebanon
| | - Antoine Abou Fayad
- Center for Infectious Diseases Research, American University of Beirut, Beirut, Lebanon
| | - Ahmad Sleiman
- Center for Infectious Diseases Research, American University of Beirut, Beirut, Lebanon
| | - Ghassan M Matar
- Center for Infectious Diseases Research, American University of Beirut, Beirut, Lebanon
| | - Sanaa Zoghbi
- Infection Control Program, Lebanese American University Medical Center, Beirut, Lebanon
| | - Tarek Madani
- Infection Control Program, Lebanese American University Medical Center, Beirut, Lebanon
| | - Rola Husni
- Division of Infectious Diseases, Department of Internal Medicine, School of Medicine, Lebanese American University, Beirut, Lebanon.
- Lebanese American University-Rizk Hospital, Beirut, Lebanon.
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4
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Szabó EV, Huszta B, Polyák M, Ruksakiet K, Bernáth R, Ghidán Á, Csáki Á, Kostadinova M, Dinya E, Vág J, Lohinai ZM. Antimicrobial efficacy of sodium hypochlorite and hyper-pure chlorine dioxide in the depth of dentin tubules in vitro. BMC Oral Health 2023; 23:930. [PMID: 38012605 PMCID: PMC10680282 DOI: 10.1186/s12903-023-03685-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 11/21/2023] [Indexed: 11/29/2023] Open
Abstract
OBJECTIVES The study aimed to compare the antibacterial effect of a novel disinfectant, hyper-pure chlorine dioxide (hClO2) to sodium hypochlorite (NaOCl) in various depths of dentin tubules. MATERIALS AND METHODS The distal root of the extracted lower molars was infected artificially with Enterococcus faecalis. The control group was rinsed with saline, and the test groups were irrigated with either 5% NaOCl or 0.12% hClO2. The longitudinally split teeth were stained by viability stain. The coronal third of the root was scanned with a confocal laser scanning microscope. The fluorescent intensities were measured, and the percentage of dead bacteria was calculated at depths up to 950 μm along the dentin tubules. The effect of penetration depth, irrigants, and their interaction on antimicrobial efficacy was determined by the linear mixed model. RESULTS The percentage of dead bacteria was higher both in the NaOCl (45.1 ± 2.3%, p < 0.01) and in the hClO2 (44.6 ± 3.8%, p < 0.01) irrigant groups compared to saline (23 ± 4.5%); however, there was no difference between them. The percentage of killed bacteria was not correlated with the depths in any group (p = 0.633). CONCLUSIONS Our results suggest that the functional penetration depth of NaOCl is at least 2-3 times more than published to date. There is no difference in disinfection effectiveness along the dentin tubules between NaOCl and hClO2 until at least the measured 950 μm. However, both were only able to eradicate the intratubular bacteria partially. CLINICAL RELEVANCE Hyper-pure ClO2 could be used as an alternative or final adjuvant irrigant in endodontic treatment.
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Affiliation(s)
- Enikő Vasziné Szabó
- Department of Restorative Dentistry and Endodontics, Semmelweis University, Szentkirály u. 47, H-1088, Budapest, Hungary.
| | - Brigitta Huszta
- Department of Restorative Dentistry and Endodontics, Semmelweis University, Szentkirály u. 47, H-1088, Budapest, Hungary
| | - Melinda Polyák
- Department of Restorative Dentistry and Endodontics, Semmelweis University, Szentkirály u. 47, H-1088, Budapest, Hungary
| | - Kasidid Ruksakiet
- Department of Restorative Dentistry and Endodontics, Semmelweis University, Szentkirály u. 47, H-1088, Budapest, Hungary
- Department of Oral Biology, Semmelweis University, Nagyvárad tér 4, H-1089, Budapest, Hungary
- Department of Restorative Dentistry, Faculty of Dentistry, Naresuan University, Tha Pho, Mueang Phitsanulok District, 65000, Phitsanulok, Thailand
| | - Róbert Bernáth
- Department of Oral Diagnostics, Semmelweis University, Nagyvárad tér 4, H-1089, Budapest, Hungary
| | - Ágoston Ghidán
- Department of Medical Microbiology, Semmelweis University, Nagyvárad tér 4, H-1089, Budapest, Hungary
| | - Ágnes Csáki
- Department of Anatomy, Histology and Embryology, Semmelweis University, Tűzoltó u. 58, H-1094, Budapest, Hungary
| | - Milia Kostadinova
- Department of Restorative Dentistry and Endodontics, Semmelweis University, Szentkirály u. 47, H-1088, Budapest, Hungary
| | - Elek Dinya
- Institute of Digital Health Sciences Semmelweis University, Ferenc tér 15, H-1094, Budapest, Hungary
| | - János Vág
- Department of Restorative Dentistry and Endodontics, Semmelweis University, Szentkirály u. 47, H-1088, Budapest, Hungary
| | - Zsolt M Lohinai
- Department of Restorative Dentistry and Endodontics, Semmelweis University, Szentkirály u. 47, H-1088, Budapest, Hungary
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Zhang X, Sha J, Huang Z, Chen S, Luo X, Liu R, Asakawa T, Zhang Q. A pilot study comparing the disinfecting effects of commercialized stable ClO 2 solution (free of activation) with conventional H 2O 2 on dental unit waterlines in the dental practice setting. Drug Discov Ther 2023; 17:357-362. [PMID: 37880103 DOI: 10.5582/ddt.2023.01077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
Disinfection of dental unit waterlines (DUWLs) plays a key role in control and prevention of nosocomial infection in a dental clinic. The most conventional disinfectant is hydrogen peroxide (H2O2), while chlorine dioxide (ClO2) has been considered however was limited by the "activation" procedures. With the availability of commercialized stable ClO2 solution (free of activation), direct application of ClO2 in the dental practice became possible. This study was designed to compare the disinfecting effects of stable 5 ppm of ClO2 solution with conventional 0.24% of H2O2 on DUWLs in dental practice. Studies of colony-forming units (CFUs), confocal laser scanning microscopy (CLSM) and scanning electron microscope (SEM) were employed for evaluation. In CFUs studies, we found that the efficiency of ClO2 was no less than those of H2O2. In the morphological studies, the stronger disinfecting effects of ClO2 was verified by both CLSM and SEM studies for removal and prevention of biofilm. Importantly, ClO2 solution achieved a better disinfecting efficiency not only at the surface of bacterial biofilm, but also, it has penetrating effects, presented disinfecting effects from the surface to the bottom of the biofilm. This pilot study provided evidence regarding the efficiency of stable ClO2 solution on disinfection of DUWLs in the dental practice setting. Application of stable ClO2 solution in dental practice is therefore become possible.
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Affiliation(s)
- Xiaolei Zhang
- Department of Hospital Infection, Shenzhen Stomatology Hospital, Shenzhen, China
| | - Jingjing Sha
- Department of Endodontics, Shenzhen Stomatology Hospital, Shenzhen, China
| | - Zefan Huang
- Department of Nursing, Shenzhen Stomatology Hospital, Shenzhen, China
| | - Sisi Chen
- Department of Endodontics, Shenzhen Stomatology Hospital, Shenzhen, China
| | - Xufei Luo
- Department of Hospital Infection, Shenzhen Stomatology Hospital, Shenzhen, China
| | - Ruijun Liu
- Department of Periodontology, Shenzhen Stomatology Hospital, Shenzhen, China
| | - Tetsuya Asakawa
- Institute of Neurology, National Clinical Research Center for Infectious Diseases, the Third People's Hospital of Shenzhen, Shenzhen, China
| | - Qiang Zhang
- Department of Orthodontics, Shenzhen Stomatology Hospital, Shenzhen, China
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Saguti F, Kjellberg I, Churqui MP, Wang H, Tunovic T, Ottoson J, Bergstedt O, Norder H, Nyström K. The Virucidal Effect of the Chlorination of Water at the Initial Phase of Disinfection May Be Underestimated If Contact Time Calculations Are Used. Pathogens 2023; 12:1216. [PMID: 37887732 PMCID: PMC10609707 DOI: 10.3390/pathogens12101216] [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: 09/11/2023] [Revised: 09/27/2023] [Accepted: 09/29/2023] [Indexed: 10/28/2023] Open
Abstract
For the microbiological safety of drinking water, disinfection methods are used to remove or inactivate microorganisms. Chlorine and chlorine dioxide are often used as disinfectants in drinking water treatment plants (DWTPs). We investigated the effectiveness of these chemicals in inactivate echovirus 30 (E30), simian 11 rotavirus (RV SA11), and human adenovirus type 2 (HAdV2) in purified water from a DWTP. Within two minutes of contact, chlorine dioxide inactivated E30 by 4-log10, RV SA11 by 3-log10, and HAdV2 could not be detected, while chlorine reduced E30 by 3-log10, RV SA11 by 2-3log10, and HAdV2 by 3-4log10. However, viral genomes could be detected for up to 2 h using qPCR. The CT method, based on a combination of disinfectant concentration and contact time, during such a short initial phase, is problematic. The high concentrations of disinfectant needed to neutralize organic matter may have a strong immediate effect on virus viability. This may lead to the underestimation of disinfection and overdosing of disinfectants in water with organic contamination. These results are useful for the selection of disinfection systems for reuse of treated wastewater and in the risk assessment of water treatment processes using chlorine and chlorine dioxide.
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Affiliation(s)
- Fredy Saguti
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, 413 46 Gothenburg, Sweden
| | - Inger Kjellberg
- Göteborgs Stad Kretslopp och Vatten, 424 23 Gothenburg, Sweden
| | - Marianela Patzi Churqui
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, 413 46 Gothenburg, Sweden
| | - Hao Wang
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, 413 46 Gothenburg, Sweden
| | - Timur Tunovic
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, 413 46 Gothenburg, Sweden
| | - Jakob Ottoson
- Department of Risk and Benefit Assessment, Swedish Food Agency, 75126 Uppsala, Sweden
| | - Olof Bergstedt
- Göteborgs Stad Kretslopp och Vatten, 424 23 Gothenburg, Sweden
| | - Helene Norder
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, 413 46 Gothenburg, Sweden
| | - Kristina Nyström
- Institute of Biomedicine, Department of Infectious Diseases, University of Gothenburg, 413 46 Gothenburg, Sweden
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7
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Krömker V, Rota N, Locatelli C, Gusmara C, Marinoni A, Molteni D, Schmenger A, Erk RE, Moroni P. Randomized noninferiority field trial evaluating a postmilking teat dip for the prevention of naturally occurring intramammary infections. J Dairy Sci 2023; 106:6342-6352. [PMID: 37479581 DOI: 10.3168/jds.2022-22732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 03/01/2023] [Indexed: 07/23/2023]
Abstract
The aim of this study was to perform a positive-controlled field study under natural exposure conditions to test the efficacy of a newly developed chlorine dioxide-based postmilking teat disinfectant (experimental product, EX) for noninferiority compared with an already established chlorine dioxide-based teat disinfectant (positive control product, PC). After blocking by parity, approximately 200 Holstein cows in early to mid-lactation stages from a dairy farm near Padua, Italy, were randomly assigned to one of 2 groups. Over a 13-wk period between September and December 2021, the teats of cows were dipped with the EX or the PC after each milking. Milk samples were collected from individual quarters of enrolled cows for 13 wk to determine infection status. Teat condition was assessed at wk 1, 5, and 9. Mixed logistic regression was used to analyze the effect of treatment on the incidence of new intramammary infections. For the noninferiority analysis, the upper limit of the 95% confidence interval for the difference in new intramammary infection (NIMI) rate between the 2 treatments (EX - PC) had to be to the left of the critical value d (0.035) to conclude that EX was noninferior to PC in terms of the risk of NIMI. The results showed that the incidence of new infections in the quarters treated with EX (3.1%) was not different from that in the udder quarters treated with PC (2.6%). No overall difference was found between the treatments in terms of teat condition. As the upper limit of the 95% confidence interval of the NIMI rate difference was smaller than the predefined noninferiority limit, we concluded that the EX was noninferior compared with the PC.
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Affiliation(s)
- V Krömker
- Department of Veterinary and Animal Sciences, Section for Production, Nutrition and Health, Copenhagen University, 1870 Frederiksberg C, Denmark.
| | - N Rota
- Agribovis S. r. l., Meda, 20821, Italy
| | - C Locatelli
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria e Scienze Animali, 26900, Lodi, Italy; Laboratorio di Malattie Infettive degli Animali-MiLab, University of Milan, 26900, Lodi, Italy
| | - C Gusmara
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria e Scienze Animali, 26900, Lodi, Italy; Laboratorio di Malattie Infettive degli Animali-MiLab, University of Milan, 26900, Lodi, Italy
| | - A Marinoni
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria e Scienze Animali, 26900, Lodi, Italy
| | - D Molteni
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria e Scienze Animali, 26900, Lodi, Italy
| | - A Schmenger
- Steinbeis Research Center for Dairy Science, 32278 Kirchlengern, Germany
| | | | - P Moroni
- Università degli Studi di Milano, Dipartimento di Medicina Veterinaria e Scienze Animali, 26900, Lodi, Italy; Laboratorio di Malattie Infettive degli Animali-MiLab, University of Milan, 26900, Lodi, Italy; Quality Milk Production Services, Animal Health Diagnostic Center, Cornell University, Ithaca, NY 14853
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Herczegh A, Csák B, Dinya E, Moldován A, Ghidán Á, Palcsó B, Lohinai ZM. Short- and long term antibacterial effects of a single rinse with different mouthwashes: A randomized clinical trial. Heliyon 2023; 9:e15350. [PMID: 37095907 PMCID: PMC10121446 DOI: 10.1016/j.heliyon.2023.e15350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/14/2023] [Accepted: 04/04/2023] [Indexed: 04/08/2023] Open
Abstract
Objectives Reducing the microbial level in the aerosol created during dental procedures is essential to avoiding infections. The aim of this study was to examine the change in Streptococcus mutans (S. mutans) and the total bacterial load in human saliva in vivo after a single rinse with different mouthwashes. Material and methods One mL of unstimulated saliva was collected from volunteers with poor oral hygiene at baseline and 5 min after a 1-min rinsing with diluted Solumium Oral® (hyper-pure 0.0015% chlorine dioxide; ClO2), Listerine Total Care®, Corsodyl® (0.2% chlorhexidine-digluconate; CHX), or BioGate Si*CLEAN for bacterial investigation. In a second study, volunteers rinsed with 0.003% ClO2 or CHX for 1 min, and saliva was collected at baseline, after 5 min, and after 90 min. After plating, the total plate and S. mutans colony numbers were determined. Results In the first study, ClO2 and CHX similarly reduced both total germ and S. mutans numbers, while Listerine Total Care® decreased only the S. mutans counts. BioGate Si*Clean had no effect on either the total germ or S. mutans numbers. In the second study, an increasing tendency toward bacterial regrowth was observed with CHX after 90 min compared to the 5-min value, while no change was measured after ClO2 rinsing. Conclusion Hyper-pure ClO2 rinsing may be a new promising preventive and therapeutic adjuvant in dental practice, as it is similar in effectiveness to the gold standard CHX-containing mouthwashes, especially in patients concerned with taste or tooth discoloration during oral health therapy.
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Kazberova A, Solovov R, Orlichenia V. Phosphorylated Cotton Cellulose as a Matrix for Generating Chlorine Dioxide. Polymers (Basel) 2023; 15:polym15040967. [PMID: 36850250 PMCID: PMC9967223 DOI: 10.3390/polym15040967] [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: 11/30/2022] [Revised: 02/09/2023] [Accepted: 02/11/2023] [Indexed: 02/18/2023] Open
Abstract
Currently, developing disinfectant materials is of utmost importance. A significant advantage of our fabric is its reusability. The disinfectants based on a natural polymer of cellulose have been barely investigated. Our work presents a modified cellulose material, and the data obtained for the first time on the chlorine dioxide generation process when treating the material with a sodium chlorite alcohol solution. A method of applying NaClO2 onto the fabric by impregnating it with a solution sprayed by an aerosol generator is proposed. This kind of fabric is capable of withstanding multiple usages after pre-washing and rinsing. The lowest alcohols-methanol, ethanol and isopropanol-are proposed as optimal solvents. It was shown that the phosphorylated cotton cellulose fabric impregnated with this solution generates chlorine dioxide during the first 25-35 min. Neither humidity nor expedites improve the process of releasing the chlorine dioxide, but high moisture content in the air causes the complete absorption of ClO2 by microdrops and its removal from the gas environment. A promising technique for removing the excess ClO2 by the means of UV treatment is proposed: after 15 min of treating ClO2 in the gas phase, it disappears entirely. These materials could be used as disinfectants in different industries, such as food and industrial manufacturing.
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Affiliation(s)
- Anfisa Kazberova
- Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences, 40 Obruchev Street, 117342 Moscow, Russia
| | - Roman Solovov
- Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences, 40 Obruchev Street, 117342 Moscow, Russia
| | - Verbina Orlichenia
- Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences, 40 Obruchev Street, 117342 Moscow, Russia
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Yan S, Liu C, Hou LA, Wang B, Zhang Y. A new filterless indoor air purifier for particulate matter and bioaerosol based on heterogeneous condensation. ENVIRONMENTAL RESEARCH 2023; 218:115034. [PMID: 36502900 DOI: 10.1016/j.envres.2022.115034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/28/2022] [Accepted: 12/08/2022] [Indexed: 06/17/2023]
Abstract
Using an indoor air purifier is an important solution for improving indoor air quality and protecting people from the harmful effects of air pollution on their health. The filter air purifiers can remove particulate matter including bioaerosols, but their filter media can cause secondary pollution. To fulfill this need, a new filterless indoor air purifier, the Cloud-Air-Purifying (CAP) air purifier, is presented in this study. Using heterogeneous condensation and supergravity technology, the CAP air purifier grows and collects fine particles, while rapidly disinfecting bioaerosols with chemical disinfection and ultraviolet (UV) disinfection. Furthermore, the purifying performance of the CAP air purifier was tested in a simulated cabin. The results showed the clean air delivery rate (CADR) of the CAP air purifier was approximately 150 m3/h, and the effective coefficient was 0.93. The CAP air purifier was highly efficient in purifying fine particulate matter, 93% for PM10 and 91% for particle size of 0.5-1 μm in 60 min, which was 13-58 times more than natural decay. The reason for the efficient removal of fine particles is that they can condense and grow in water vapor supersaturated environment and be collected in a supergravity field. Moreover, the CAP air purifier has significant bactericidal effects on bioaerosols. It achieved a disinfection efficiency of 99.99997% by decreasing bioaerosols from 108 CFU/m3 to less than 30 CFU/m3 in only 20 min when particle purification in combination with UV disinfection and disinfectant (ClO2). Furthermore, ClO2 release concentrations, noise, and power consumption were investigated for application purposes, with results showing that they were within acceptable limits. The study presents an innovative idea and design for preventing airborne microorganisms and particulate matter through heterogeneous condensation technology.
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Affiliation(s)
- Shijun Yan
- Key Laboratory of Western China's Environmental Systems (Ministry of Education) and Engineering Research Center of Fine Particle Pollution Control Technology and Equipment, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, PR China
| | - Chang Liu
- Key Laboratory of Western China's Environmental Systems (Ministry of Education) and Engineering Research Center of Fine Particle Pollution Control Technology and Equipment, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, PR China
| | - Li-An Hou
- Key Laboratory of Western China's Environmental Systems (Ministry of Education) and Engineering Research Center of Fine Particle Pollution Control Technology and Equipment, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, PR China; Xi'an High-Tech Institute, Xi'an, 710025, PR China
| | - Bo Wang
- Key Laboratory of Western China's Environmental Systems (Ministry of Education) and Engineering Research Center of Fine Particle Pollution Control Technology and Equipment, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, PR China
| | - Yumeng Zhang
- Key Laboratory of Western China's Environmental Systems (Ministry of Education) and Engineering Research Center of Fine Particle Pollution Control Technology and Equipment, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, PR China; College of Atmospheric Sciences, Lanzhou University, PR China.
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Szalai E, Tajti P, Szabó B, Hegyi P, Czumbel LM, Shojazadeh S, Varga G, Németh O, Keremi B. Daily use of chlorine dioxide effectively treats halitosis: A meta-analysis of randomised controlled trials. PLoS One 2023; 18:e0280377. [PMID: 36634129 PMCID: PMC9836286 DOI: 10.1371/journal.pone.0280377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 12/27/2022] [Indexed: 01/13/2023] Open
Abstract
OBJECTIVES We aimed to conduct a systematic review on published data in order to investigate the efficacy of mouthwash products containing chlorine dioxide in halitosis. STUDY DESIGN Systematic review and meta-analysis. METHODS Our search was conducted on 14th October 2021. We searched the following electronic databases: MEDLINE, Embase, Scopus, Web of Science, and CENTRAL. We analysed data on adults with halitosis, included only randomised controlled trials and excluded in vitro and animal studies. The interventional groups used chlorine dioxide, and the comparator groups used a placebo or other mouthwash. Our primary outcomes were changes in organoleptic test scores (OLS) and Volatile Sulfur Compound (VSC) levels from baseline to the last available follow-up. RESULTS We found 325 articles in databases. After the selection process, ten articles were eligible for qualitative synthesis, and 7 RCTs with 234 patients were involved in the meta-analysis. Our findings showed a significant improvement in the parameters of the chlorine dioxide group compared to the placebo group in OLS one-day data (mean difference (MD): -0.82; 95% confidence intervals (95% CIs): [-1.04 --0.6]; heterogeneity: I2 = 0%, p = 0.67); and one-week OLS data (MD: -0.24; 95% CIs: [-0.41 --0.07]; I2 = 0%, p = 0.52); and also changes in H2S one-day data (standardised mean difference (SMD): -1.81; 95% CIs: [-2.52 --1.10]); I2 = 73.4%, p = 0.02). CONCLUSION Our data indicate that chlorine dioxide mouthwash may be a good supportive therapy in oral halitosis without known side effects.
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Affiliation(s)
- Eszter Szalai
- Department of Restorative Dentistry and Endodontics, Semmelweis University, Budapest, Hungary
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Péter Tajti
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
- Department of Prosthodontics, Semmelweis University, Budapest, Hungary
| | - Bence Szabó
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
| | - Péter Hegyi
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
- Institute for Translational Medicine, Szentágothai Research Centre, Medical School, University of Pécs, Pécs, Hungary
- Institute of Pancreatic Diseases, Semmelweis University, Budapest, Hungary
| | - László Márk Czumbel
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
- Department of Periodontology, Semmelweis University, Budapest, Hungary
| | | | - Gábor Varga
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
- Department of Oral Biology, Semmelweis University, Budapest, Hungary
| | - Orsolya Németh
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
- Department of Community Dentistry, Semmelweis University, Budapest, Hungary
| | - Beata Keremi
- Department of Restorative Dentistry and Endodontics, Semmelweis University, Budapest, Hungary
- Centre for Translational Medicine, Semmelweis University, Budapest, Hungary
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12
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Cao J, Shi Y, Wen M, Peng Y, Miao Q, Liu X, Zheng M, Asakawa T, Lu H. Can nasal irrigation with chlorine dioxide be considered as a potential alternative therapy for respiratory infectious diseases? The example of COVID-19. Biosci Trends 2022; 16:447-450. [PMID: 36504072 DOI: 10.5582/bst.2022.01495] [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: 12/13/2022]
Abstract
Chlorine dioxide (ClO2) is a high-level disinfectant that is safe and widely used for sterilization. Due to the limitations on preparing a stable solution, direct use of ClO2 in the human body is limited. Nasal irrigation is an alternative therapy used to treat respiratory infectious diseases. This study briefly summarizes the available evidence regarding the safety/efficacy of directly using ClO2 on the human body as well as the approach of nasal irrigation to treat COVID-19. Based on the available information, as well as a preliminary experiment that comprehensively evaluated the efficacy and safety of ClO2, 25-50 ppm was deemed to be an appropriate concentration of ClO2 for nasal irrigation to treat COVID-19. This finding requires further verification. Nasal irrigation with ClO2 can be considered as a potential alternative therapy to treat respiratory infectious diseases, and COVID-19 in particular.
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Affiliation(s)
- Jing Cao
- Department of Nursing, National Clinical Research Center for Infectious Diseases, Third People's Hospital of Shenzhen, Shenzhen, Guangdong, China
| | - Yirong Shi
- Department of Nursing, National Clinical Research Center for Infectious Diseases, Third People's Hospital of Shenzhen, Shenzhen, Guangdong, China
| | - Min Wen
- Department of Nursing, National Clinical Research Center for Infectious Diseases, Third People's Hospital of Shenzhen, Shenzhen, Guangdong, China
| | - Yuanyuan Peng
- Department of Nursing, National Clinical Research Center for Infectious Diseases, Third People's Hospital of Shenzhen, Shenzhen, Guangdong, China
| | - Qiqi Miao
- Department of Nursing, National Clinical Research Center for Infectious Diseases, Third People's Hospital of Shenzhen, Shenzhen, Guangdong, China
| | - Xiaoning Liu
- Department of Nursing, National Clinical Research Center for Infectious Diseases, Third People's Hospital of Shenzhen, Shenzhen, Guangdong, China
| | - Mingbin Zheng
- Institute of Neurology, National Clinical Research Center for Infectious Diseases, Third People's Hospital of Shenzhen, Shenzhen, Guangdong, China
| | - Tetsuya Asakawa
- Institute of Neurology, National Clinical Research Center for Infectious Diseases, Third People's Hospital of Shenzhen, Shenzhen, Guangdong, China
| | - Hongzhou Lu
- Institute of Neurology, National Clinical Research Center for Infectious Diseases, Third People's Hospital of Shenzhen, Shenzhen, Guangdong, China.,Department of Infectious Diseases, National Clinical Research Center for Infectious Diseases, Third People's Hospital of Shenzhen, Shenzhen, Guangdong, China
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Surface Free Energy and Composition Changes and Ob Cellular Response to CHX-, PVPI-, and ClO 2-Treated Titanium Implant Materials. J Funct Biomater 2022; 13:jfb13040202. [PMID: 36412843 PMCID: PMC9680491 DOI: 10.3390/jfb13040202] [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: 09/28/2022] [Revised: 10/19/2022] [Accepted: 10/21/2022] [Indexed: 12/14/2022] Open
Abstract
The study evaluated the interaction of a titanium dental implant surface with three different antibacterial solutions: chlorhexidine, povidone-iodine, and chlorine dioxide. Implant surface decontamination is greatly challenging modern implant dentistry. Alongside mechanical cleaning, different antibacterial agents are widely used, though these could alter implant surface properties. Commercially pure (CP) grade 4 titanium (Ti) discs were treated with three different chemical agents (chlorhexidine 0.2% (CHX), povidone-iodine 10% (PVPI), chlorine dioxide 0.12% (ClO2)) for 5 min. Contact angle measurements, X-ray photoelectron spectroscopy (XPS) analysis, and cell culture studies were performed. Attachment and proliferation of primary human osteoblast cells were investigated via MTT (dimethylthiazol-diphenyl tetrazolium bromide), alamarBlue, LDH (lactate dehydrogenase), and fluorescent assays. Contact angle measurements showed that PVPI-treated samples (Θ = 24.9 ± 4.1) gave no difference compared with controls (Θ = 24.6 ± 5.4), while CHX (Θ = 47.2 ± 4.1) and ClO2 (Θ = 39.2 ± 9.8) treatments presented significantly higher Θ values. All samples remained in the hydrophilic region. XPS analysis revealed typical surface elements of CP grade 4 titanium (Ti, O, and C). Both MTT and alamarBlue cell viability assays showed similarity between treated and untreated control groups. The LDH test revealed no significant difference, and fluorescent staining confirmed these results. Although there was a difference in surface wettability, a high proliferation rate was observed in all treated groups. The in vitro study proved that CHX, PVPI, and ClO2 are proper candidates as dental implant decontamination agents.
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14
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Yıldız SZ, Bilir C, Eskiler GG, Bilir F. The Anticancer Potential of Chlorine Dioxide in Small-Cell Lung Cancer Cells. Cureus 2022; 14:e29989. [PMID: 36381770 PMCID: PMC9636887 DOI: 10.7759/cureus.29989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/06/2022] [Indexed: 11/06/2022] Open
Abstract
Background Chlorine dioxide (ClO2) is an effective disinfectant consisting of oxygen, chloride, and potassium. Because of its high oxidative capacity, ClO2 exerts antimicrobial, antiviral, and antifungal effects. However, its anticancer effects remain to be elucidated. Methodology The anticancer activity of CIO2 was assessed on DMS114 small-cell lung cancer (SCLC) cells and human umbilical vein endothelial cells (HUVEC) as control by WST-1, Annexin V, cell cycle analysis, and acridine orange staining. We for the first time investigated the possible therapeutic effects of long-term stabilized ClO2 solution (LTSCD). Results Our preliminary findings showed that LTSCD significantly inhibited the proliferation of SCLC cells (p < 0.01) with less toxicity in HUVEC cells. Additionally, LTSCD induced apoptotic cell death in SCLC cells through nuclear blebbing and vacuolar formation. However, LTSCD treatment did not induce cell cycle arrest in both cell lines. Conclusions LTSCD can be a therapeutic potential for the treatment of SCLC. However, further investigations are required to assess the LTSCD-induced cell death in SCLC both in vitro and in vivo.
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Affiliation(s)
- Salih Zeki Yıldız
- Department of Chemistry, Faculty of Arts and Sciences, Sakarya University, Sakarya, TUR
| | - Cemil Bilir
- Medical Oncology, Istinye University, VM Medical Park Pendik Hospital, Istanbul, TUR
| | - Gamze Guney Eskiler
- Department of Medical Biology, Faculty of Medicine, Sakarya University, Sakarya, TUR
| | - Filiz Bilir
- Department of Gynecologic Oncology, Faculty of Medicine, Kocaeli University, Kocaeli, TUR
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15
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Lanrewaju AA, Enitan-Folami AM, Sabiu S, Swalaha FM. A review on disinfection methods for inactivation of waterborne viruses. Front Microbiol 2022; 13:991856. [PMID: 36212890 PMCID: PMC9539188 DOI: 10.3389/fmicb.2022.991856] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 08/29/2022] [Indexed: 11/13/2022] Open
Abstract
Water contamination is a global health problem, and the need for safe water is ever-growing due to the public health implications of unsafe water. Contaminated water could contain pathogenic bacteria, protozoa, and viruses that are implicated in several debilitating human diseases. The prevalence and survival of waterborne viruses differ from bacteria and other waterborne microorganisms. In addition, viruses are responsible for more severe waterborne diseases such as gastroenteritis, myocarditis, and encephalitis among others, hence the need for dedicated attention to viral inactivation. Disinfection is vital to water treatment because it removes pathogens, including viruses. The commonly used methods and techniques of disinfection for viral inactivation in water comprise physical disinfection such as membrane filtration, ultraviolet (UV) irradiation, and conventional chemical processes such as chlorine, monochloramine, chlorine dioxide, and ozone among others. However, the production of disinfection by-products (DBPs) that accompanies chemical methods of disinfection is an issue of great concern due to the increase in the risks of harm to humans, for example, the development of cancer of the bladder and adverse reproductive outcomes. Therefore, this review examines the conventional disinfection approaches alongside emerging disinfection technologies, such as photocatalytic disinfection, cavitation, and electrochemical disinfection. Moreover, the merits, limitations, and log reduction values (LRVs) of the different disinfection methods discussed were compared concerning virus removal efficiency. Future research needs to merge single disinfection techniques into one to achieve improved viral disinfection, and the development of medicinal plant-based materials as disinfectants due to their antimicrobial and safety benefits to avoid toxicity is also highlighted.
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Affiliation(s)
| | | | - Saheed Sabiu
- Department of Biotechnology and Food Science, Durban University of Technology, Durban, South Africa
| | - Feroz Mahomed Swalaha
- Department of Biotechnology and Food Science, Durban University of Technology, Durban, South Africa
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16
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Palcsó B, Kazsoki A, Herczegh A, Ghidán Á, Pinke B, Mészáros L, Zelkó R. Formulation of Chlorine-Dioxide-Releasing Nanofibers for Disinfection in Humid and CO 2-Rich Environment. NANOMATERIALS 2022; 12:nano12091481. [PMID: 35564190 PMCID: PMC9104377 DOI: 10.3390/nano12091481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/22/2022] [Accepted: 04/26/2022] [Indexed: 11/30/2022]
Abstract
Background: Preventing infectious diseases has become particularly relevant in the past few years. Therefore, antiseptics that are harmless and insusceptible to microbial resistance mechanisms are desired in medicine and public health. In our recent work, a poly(ethylene oxide)-based nanofibrous mat loaded with sodium chlorite was formulated. Methods: We tested the chlorine dioxide production and bacterial inactivation of the fibers in a medium, modeling the parameters of human exhaled air (ca. 5% (v/v) CO2, T = 37 °C, RH > 95%). The morphology and microstructure of the fibers were investigated via scanning electron microscopy and infrared spectroscopy. Results: Smooth-surfaced, nanoscale fibers were produced. The ClO2-producing ability of the fibers decreased from 65.8 ppm/mg to 4.8 ppm/mg with the increase of the sample weight from 1 to 30 mg. The effect of CO2 concentration and exposure time was also evaluated. The antibacterial activity of the fibers was tested in a 24 h experiment. The sodium-chlorite-loaded fibers showed substantial antibacterial activity. Conclusions: Chlorine dioxide was liberated into the gas phase in the presence of CO2 and water vapor, eliminating the bacteria. Sodium-chlorite-loaded nanofibers can be sources of prolonged chlorine dioxide production and subsequent pathogen inactivation in a CO2-rich and humid environment. Based on the results, further evaluation of the possible application of the formulation in face-mask filters as medical devices is encouraged.
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Affiliation(s)
- Barnabás Palcsó
- University Pharmacy Department of Pharmacy Administration, Faculty of Pharmaceutical Sciences, Semmelweis University, Hőgyes Endre utca 7-9, H-1092 Budapest, Hungary; (B.P.); (A.K.)
| | - Adrienn Kazsoki
- University Pharmacy Department of Pharmacy Administration, Faculty of Pharmaceutical Sciences, Semmelweis University, Hőgyes Endre utca 7-9, H-1092 Budapest, Hungary; (B.P.); (A.K.)
| | - Anna Herczegh
- Department of Conservative Dentistry, Faculty of Dentistry, Semmelweis University, Szentkirályi utca 47, H-1088 Budapest, Hungary;
| | - Ágoston Ghidán
- Institute of Medical Microbiology, Faculty of Medicine, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary;
| | - Balázs Pinke
- Department of Polymer Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary; (B.P.); (L.M.)
| | - László Mészáros
- Department of Polymer Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, Hungary; (B.P.); (L.M.)
- MTA-BME Research Group for Composite Science and Technology, Műegyetem rkp. 3, H-1111 Budapest, Hungary
| | - Romána Zelkó
- University Pharmacy Department of Pharmacy Administration, Faculty of Pharmaceutical Sciences, Semmelweis University, Hőgyes Endre utca 7-9, H-1092 Budapest, Hungary; (B.P.); (A.K.)
- Correspondence: ; Tel.: +36-1-2170927
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17
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Veres T, Voniatis C, Molnár K, Nesztor D, Fehér D, Ferencz A, Gresits I, Thuróczy G, Márkus BG, Simon F, Nemes NM, García-Hernández M, Reiniger L, Horváth I, Máthé D, Szigeti K, Tombácz E, Jedlovszky-Hajdu A. An Implantable Magneto-Responsive Poly(aspartamide) Based Electrospun Scaffold for Hyperthermia Treatment. NANOMATERIALS 2022; 12:nano12091476. [PMID: 35564185 PMCID: PMC9101327 DOI: 10.3390/nano12091476] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 04/15/2022] [Accepted: 04/22/2022] [Indexed: 02/06/2023]
Abstract
When exposed to an alternating magnetic field, superparamagnetic nanoparticles can elicit the required hyperthermic effect while also being excellent magnetic resonance imaging (MRI) contrast agents. Their main drawback is that they diffuse out of the area of interest in one or two days, thus preventing a continuous application during the typical several-cycle multi-week treatment. To solve this issue, our aim was to synthesise an implantable, biodegradable membrane infused with magnetite that enabled long-term treatment while having adequate MRI contrast and hyperthermic capabilities. To immobilise the nanoparticles inside the scaffold, they were synthesised inside hydrogel fibres. First, polysuccinimide (PSI) fibres were produced by electrospinning and crosslinked, and then, magnetitc iron oxide nanoparticles (MIONs) were synthesised inside and in-between the fibres of the hydrogel membranes with the well-known co-precipitation method. The attenuated total reflectance Fourier-transform infrared spectroscopy (ATR-FTIR) investigation proved the success of the chemical synthesis and the presence of iron oxide, and the superconducting quantum interference device (SQUID) study revealed their superparamagnetic property. The magnetic hyperthermia efficiency of the samples was significant. The given alternating current (AC) magnetic field could induce a temperature rise of 5 °C (from 37 °C to 42 °C) in less than 2 min even for five quick heat-cool cycles or for five consecutive days without considerable heat generation loss in the samples. Short-term (1 day and 7 day) biocompatibility, biodegradability and MRI contrast capability were investigated in vivo on Wistar rats. The results showed excellent MRI contrast and minimal acute inflammation.
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Affiliation(s)
- Tamás Veres
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, 1089 Budapest, Hungary; (T.V.); (C.V.); (K.M.)
| | - Constantinos Voniatis
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, 1089 Budapest, Hungary; (T.V.); (C.V.); (K.M.)
- Department of Surgery, Transplantation and Gastroenterology, Semmelweis University, 1082 Budapest, Hungary
| | - Kristóf Molnár
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, 1089 Budapest, Hungary; (T.V.); (C.V.); (K.M.)
| | - Dániel Nesztor
- Department of Food Engineering, University of Szeged, 6725 Szeged, Hungary; (D.N.); (E.T.)
| | - Daniella Fehér
- Heart and Vascular Centre, Department of Surgical Research and Techniques, Semmelweis University, 1122 Budapest, Hungary; (D.F.); (A.F.)
| | - Andrea Ferencz
- Heart and Vascular Centre, Department of Surgical Research and Techniques, Semmelweis University, 1122 Budapest, Hungary; (D.F.); (A.F.)
| | - Iván Gresits
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary; (I.G.); (I.H.); (D.M.); (K.S.)
| | - György Thuróczy
- NRIRR “Frédéric Joliot-Curie” National Research Institute for Radiobiology and Radiohygiene, 1221 Budapest, Hungary;
| | - Bence Gábor Márkus
- Stavropoulos Center for Complex Quantum Matter, Department of Physics and Astronomy, University of Notre Dame, Notre Dame, IN 46556, USA;
- Institute of Physics, Budapest University of Technology and Economics, 1521 Budapest, Hungary;
- Wigner Research Centre for Physics Economics, 1121 Budapest, Hungary
| | - Ferenc Simon
- Institute of Physics, Budapest University of Technology and Economics, 1521 Budapest, Hungary;
- Wigner Research Centre for Physics Economics, 1121 Budapest, Hungary
| | - Norbert Marcell Nemes
- Grupo de Física de Materiales Complejos (GFMC), Departamento de Física de Materiales, Universidad Complutense de Madrid, 28040 Madrid, Spain; (N.M.N.); (M.G.-H.)
| | - Mar García-Hernández
- Grupo de Física de Materiales Complejos (GFMC), Departamento de Física de Materiales, Universidad Complutense de Madrid, 28040 Madrid, Spain; (N.M.N.); (M.G.-H.)
| | - Lilla Reiniger
- Department of Pathology and Experimental Cancer Research, Semmelweis University, 1085 Budapest, Hungary;
| | - Ildikó Horváth
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary; (I.G.); (I.H.); (D.M.); (K.S.)
| | - Domokos Máthé
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary; (I.G.); (I.H.); (D.M.); (K.S.)
- Hungarian Center of Excellence for Molecular Medicine (HCEMM), In Vivo Imaging Advanced Core Facility, Semmelweis University Site, 1094 Budapest, Hungary
| | - Krisztián Szigeti
- Department of Biophysics and Radiation Biology, Semmelweis University, 1094 Budapest, Hungary; (I.G.); (I.H.); (D.M.); (K.S.)
| | - Etelka Tombácz
- Department of Food Engineering, University of Szeged, 6725 Szeged, Hungary; (D.N.); (E.T.)
- Soós Ernő Water Technology Research and Development Center, University of Pannonia, 8800 Nagykanizsa, Hungary
| | - Angela Jedlovszky-Hajdu
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, 1089 Budapest, Hungary; (T.V.); (C.V.); (K.M.)
- Correspondence:
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18
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Kőhidai Z, Takács A, Lajkó E, Géczi Z, Pállinger É, Láng O, Kőhidai L. The effects of mouthwashes in human gingiva epithelial progenitor (HGEPp) cells. Clin Oral Investig 2022; 26:4559-4574. [PMID: 35257248 PMCID: PMC9203393 DOI: 10.1007/s00784-022-04422-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 02/17/2022] [Indexed: 11/26/2022]
Abstract
OBJECTIVES The gingiva epithelium accounts for a significant proportion of the surface around the tooth. An inflammatory reaction occurs in the presence of bacterial biofilm, adhesion is reduced, and the depth of the sulcus gingivalis increases. The most common antiseptic agents in oral rinses are chlorhexidine digluconate (CHX) and cetylpyridinium chloride. We examined long-lasting effects of residual concentrations of eight commercially available rinses. Our main goals were (i) to analyze the effect of different chemical compositions on cell proliferation, (ii) to examine apoptosis, and (iii) cell morphology on human epithelial progenitor cell line (HGEPp). MATERIALS AND METHODS Cell proliferation was measured in a real-time system (0-48 h) by impedimetry (xCELLigence). Apoptosis was measured with labeled Annexin-V (BD-FACScalibur). RESULTS Changes in proliferation were measured at certain concentrations: (i) H2O2 proved to be cytotoxic at almost all concentrations; (ii) low concentrations of CHX (0.0001%; 0.0003%) were proliferation inducers, while higher concentrations were cytotoxic; (iii) for ClO2, advantageous proliferative effect was observed over a broad concentration range (0.06-6 ppm). In mouthwashes, additives in the formulation (e.g., allantoin) appeared to influence cellular responses positively. Apoptosis marker assay results suggested a low-level activation by the tested agents. CONCLUSIONS Mouthwashes and their reference compounds proved to have concentration-dependent cytotoxic effects on human gingival epithelial cells. CLINICAL RELEVANCE A better understanding of the effects of mouthwashes and their reference compounds is particularly important. These concentration-dependent effects (cytotoxic or proliferation inducing) interfere with human cells physiology while being used in the fight against the pathogenic flora.
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Affiliation(s)
- Zsófia Kőhidai
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary.
- Department of Oral Diagnostics, Semmelweis University, Budapest, Hungary.
| | - Angéla Takács
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
| | - Eszter Lajkó
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
| | - Zoltán Géczi
- Department of Prosthodontics, Semmelweis University, Budapest, Hungary
| | - Éva Pállinger
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
| | - Orsolya Láng
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
| | - László Kőhidai
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
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19
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Fehér D, Ferencz A, Szabó G, Juhos K, Csukás D, Voniatis C, Reininger L, Molnár K, Jedlovszky-Hajdú A, Wéber G. Early and late effects of absorbable poly(vinyl alcohol) hernia mesh to tissue reconstruction. IET Nanobiotechnol 2021; 15:565-574. [PMID: 34694741 PMCID: PMC8675808 DOI: 10.1049/nbt2.12015] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 12/15/2020] [Accepted: 12/26/2020] [Indexed: 11/19/2022] Open
Abstract
Hernia is a defect of the abdominal wall. Treatment is principally surgical mesh implantation. Non-degradable surgical meshes produce numerous complications and side-effects such as inflammatory response, mesh migration and chronic pain. In contrast, the biodegradable, poly (vinyl alcohol) (PVA) based polymers have excellent chemical, mechanical and biological properties and after their degradation no chronic pain can be expected. The toxicology of PVA solution and fibers was investigated with Human dermal fibroblast- Adult cell line. Implantation tests were observed on long-term contact (rat) and large animal (swine) models. To measure the adhesion formation, Diamond and Vandendael score were used. Macroscopical and histological responses were graded from the samples. In vitro examination showed that PVA solution and fibers are biocompatible for the cells. According to the implantation tests, all samples were integrated into the surrounding tissue, and there was no foreign body reaction. The average number of adhesions was found on the non-absorbable suture line. The biocompatibility of the PVA nanofiber mesh was demonstrated. It has a non-adhesive, non-toxic and good quality structure which has the potential to be an alternative solution for the part of the hernia mesh.
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Affiliation(s)
- Daniella Fehér
- Department of Surgical Research and Techniques, Semmelweis University, Budapest, Hungary
| | - Andrea Ferencz
- Department of Surgical Research and Techniques, Semmelweis University, Budapest, Hungary
| | - Györgyi Szabó
- Department of Surgical Research and Techniques, Semmelweis University, Budapest, Hungary
| | - Krisztina Juhos
- Department of Surgical Research and Techniques, Semmelweis University, Budapest, Hungary
| | - Domokos Csukás
- Department of Surgical Research and Techniques, Semmelweis University, Budapest, Hungary
| | - Constantinos Voniatis
- Department of Surgical Research and Techniques, Semmelweis University, Budapest, Hungary.,Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Lilla Reininger
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Kristóf Molnár
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - Angéla Jedlovszky-Hajdú
- Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - György Wéber
- Department of Surgical Research and Techniques, Semmelweis University, Budapest, Hungary
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Palócz O, Noszticzius Z, Kály-Kullai K, Bradley E, Csikó G. In vitro study of chlorine dioxide on porcine intestinal epithelial cell gene markers. Vet Med Sci 2021; 8:591-597. [PMID: 34672097 PMCID: PMC8959260 DOI: 10.1002/vms3.658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
BACKGROUND Chlorine dioxide (ClO2 ) is an inorganic, potent biocide and is available in highly purified aqueous solution. It can be administered as an oral antiseptic in this form. OBJECTIVES Our aim is to determine the level of inflammatory markers and cytochrome genes expressed by enterocytes exposed to different concentrations of hyperpure chlorine dioxide solution. METHODS Porcine jejunal enterocyte cell (IPEC-J2) cultures were treated with the aqueous solution of hyper-pure chlorine dioxide of various concentrations. We determined the alterations in mRNA levels of inflammatory mediators, such as IL6, CXCL8/IL8, TNF, HSPA6 (Hsp70), CAT and PTGS2 (COX2); furthermore, the expression of three cytochrome genes (CYP1A1, CYP1A2, CYP3A29) were analysed by quantitative PCR method. RESULTS The highest applied ClO2 concentration reduced the expression of all three investigated CYP genes. The gene expression of PTGS2 and CAT were not altered by most concentrations of ClO2 . The expression of IL8 gene was reduced by all applied concentrations of ClO2 . TNF mRNA level was also decreased by most ClO2 concentrations used. CONCLUSIONS Different concentrations of chlorine dioxide exhibited immunomodulatory activity and caused altered transcription of CYP450 genes in porcine enterocytes. Further studies are needed to determine the appropriate ClO2 concentration for oral use in animals.
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Affiliation(s)
- Orsolya Palócz
- Department of Pharmacology and Toxicology, University of Veterinary Medicine, Budapest, Hungary
| | - Zoltán Noszticzius
- Department of Physics, Faculty of Natural Sciences, Budapest University of Technology and Economics, Budapest, Hungary
| | - Kristóf Kály-Kullai
- Department of Physics, Faculty of Natural Sciences, Budapest University of Technology and Economics, Budapest, Hungary
| | - Emma Bradley
- Department of Pharmacology and Toxicology, University of Veterinary Medicine, Budapest, Hungary
| | - György Csikó
- Department of Pharmacology and Toxicology, University of Veterinary Medicine, Budapest, Hungary
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21
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Barczikai D, Domokos J, Szabó D, Molnar K, Juriga D, Krisch E, Nagy KS, Kohidai L, Helfer CA, Jedlovszky-Hajdu A, Puskas JE. Polyisobutylene-New Opportunities for Medical Applications. Molecules 2021; 26:molecules26175207. [PMID: 34500639 PMCID: PMC8434312 DOI: 10.3390/molecules26175207] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 08/15/2021] [Accepted: 08/24/2021] [Indexed: 11/22/2022] Open
Abstract
This paper presents the results of the first part of testing a novel electrospun fiber mat based on a unique macromolecule: polyisobutylene (PIB). A PIB-based compound containing zinc oxide (ZnO) was electrospun into self-supporting mats of 203.75 and 295.5 g/m2 that were investigated using a variety of techniques. The results show that the hydrophobic mats are not cytotoxic, resist fibroblast cell adhesion and biofilm formation and are comfortable and easy to breathe through for use as a mask. The mats show great promise for personal protective equipment and other applications.
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Affiliation(s)
- Dóra Barczikai
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (D.B.); (D.J.); (K.S.N.)
| | - Judit Domokos
- Institute of Medical Microbiology, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (J.D.); (D.S.)
| | - Dóra Szabó
- Institute of Medical Microbiology, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (J.D.); (D.S.)
| | - Kristof Molnar
- Department of Food, Agricultural and Biological Engineering, College of Food, Agricultural, and Environmental Sciences, The Ohio State University, 222 FABE, 1680 Madison Avenue, Wooster, OH 44691, USA; (K.M.); (E.K.); (C.A.H.)
| | - David Juriga
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (D.B.); (D.J.); (K.S.N.)
| | - Eniko Krisch
- Department of Food, Agricultural and Biological Engineering, College of Food, Agricultural, and Environmental Sciences, The Ohio State University, 222 FABE, 1680 Madison Avenue, Wooster, OH 44691, USA; (K.M.); (E.K.); (C.A.H.)
| | - Krisztina S. Nagy
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (D.B.); (D.J.); (K.S.N.)
| | - Laszlo Kohidai
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary;
| | - Carin A. Helfer
- Department of Food, Agricultural and Biological Engineering, College of Food, Agricultural, and Environmental Sciences, The Ohio State University, 222 FABE, 1680 Madison Avenue, Wooster, OH 44691, USA; (K.M.); (E.K.); (C.A.H.)
| | - Angela Jedlovszky-Hajdu
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvárad tér 4, H-1089 Budapest, Hungary; (D.B.); (D.J.); (K.S.N.)
- Correspondence: (A.J.-H.); (J.E.P.)
| | - Judit E. Puskas
- Department of Food, Agricultural and Biological Engineering, College of Food, Agricultural, and Environmental Sciences, The Ohio State University, 222 FABE, 1680 Madison Avenue, Wooster, OH 44691, USA; (K.M.); (E.K.); (C.A.H.)
- Correspondence: (A.J.-H.); (J.E.P.)
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22
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Molnar K, Voniatis C, Feher D, Szabo G, Varga R, Reiniger L, Juriga D, Kiss Z, Krisch E, Weber G, Ferencz A, Varga G, Zrinyi M, Nagy KS, Jedlovszky-Hajdu A. Poly(amino acid) based fibrous membranes with tuneable in vivo biodegradation. PLoS One 2021; 16:e0254843. [PMID: 34388163 PMCID: PMC8362958 DOI: 10.1371/journal.pone.0254843] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 07/04/2021] [Indexed: 11/19/2022] Open
Abstract
In this work two types of biodegradable polysuccinimide-based, electrospun fibrous membranes are presented. One contains disulfide bonds exhibiting a shorter (3 days) in vivo biodegradation time, while the other one has alkyl crosslinks and a longer biodegradation time (more than 7 days). According to the mechanical measurements, the tensile strength of the membranes is comparable to those of soft the connective tissues and visceral tissues. Furthermore, the suture retention test suggests, that the membranes would withstand surgical handling and in vivo fixation. The in vivo biocompatibility study demonstrates how membranes undergo in vivo hydrolysis and by the 3rd day they become poly(aspartic acid) fibrous membranes, which can be then enzymatically degraded. After one week, the disulfide crosslinked membranes almost completely degrade, while the alkyl-chain crosslinked ones mildly lose their integrity as the surrounding tissue invades them. Histopathology revealed mild acute inflammation, which diminished to a minimal level after seven days.
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Affiliation(s)
- Kristof Molnar
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
- Department of Food, Agricultural and Biological Engineering, College of Food, Agricultural, and Environmental Sciences, The Ohio State University, Wooster, OH, United States of America
| | - Constantinos Voniatis
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
- Department of Surgical Research and Techniques, Semmelweis University, Budapest, Hungary
| | - Daniella Feher
- Department of Surgical Research and Techniques, Semmelweis University, Budapest, Hungary
| | - Gyorgyi Szabo
- Department of Surgical Research and Techniques, Semmelweis University, Budapest, Hungary
| | - Rita Varga
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Lilla Reiniger
- 1 Department of Pathology and Experimental Cancer Research, Semmelweis University, Budapest, Hungary
| | - David Juriga
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Zoltan Kiss
- Department of Polymer Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Budapest, Hungary
- Biomechanical Research Center, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Budapest, Hungary
| | - Eniko Krisch
- Department of Food, Agricultural and Biological Engineering, College of Food, Agricultural, and Environmental Sciences, The Ohio State University, Wooster, OH, United States of America
| | - Gyorgy Weber
- Department of Surgical Research and Techniques, Semmelweis University, Budapest, Hungary
| | - Andrea Ferencz
- Department of Surgical Research and Techniques, Semmelweis University, Budapest, Hungary
| | - Gabor Varga
- Department of Oral Biology, Semmelweis University, Budapest, Hungary
| | - Miklos Zrinyi
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Krisztina S. Nagy
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
- Department of Oral Biology, Semmelweis University, Budapest, Hungary
| | - Angela Jedlovszky-Hajdu
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
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23
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Totaro M, Badalucco F, Costa AL, Tuvo B, Casini B, Privitera G, Menchini Fabris GB, Baggiani A. Effectiveness of Disinfection with Chlorine Dioxide on Respiratory Transmitted, Enteric, and Bloodborne Viruses: A Narrative Synthesis. Pathogens 2021; 10:pathogens10081017. [PMID: 34451481 PMCID: PMC8398083 DOI: 10.3390/pathogens10081017] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 08/04/2021] [Accepted: 08/10/2021] [Indexed: 11/23/2022] Open
Abstract
A viral spread occurrence such as the SARS-CoV-2 pandemic has prompted the evaluation of different disinfectants suitable for a wide range of environmental matrices. Chlorine dioxide (ClO2) represents one of the most-used virucidal agents in different settings effective against both enveloped and nonenveloped viruses. This narrative synthesis is focused on the effectiveness of ClO2 applied in healthcare and community settings in order to eliminate respiratory transmitted, enteric, and bloodborne viruses. Influenza viruses were reduced by 99.9% by 0.5–1.0 mg/L of ClO2 in less than 5 min. Higher concentration (20 mg/L) eliminated SARS-CoV-2 from sewage. ClO2 concentrations from 0.2 to 1.0 mg/L ensured at least a 99% viral reduction of AD40, HAV, Coxsackie B5 virus, and other enteric viruses in less than 30 min. Considering bloodborne viruses, 30 mg/L of ClO2 can eliminate them in 5 min. Bloodborne viruses (HIV-1, HCV, and HBV) may be completely eliminated from medical devices and human fluids after a treatment with 30 mg/L of ClO2 for 30 min. In conclusion, ClO2 is a versatile virucidal agent suitable for different environmental matrices.
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Affiliation(s)
- Michele Totaro
- Department of Translational Research and the New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (M.T.); (F.B.); (A.L.C.); (B.T.); (B.C.); (G.P.)
| | - Federica Badalucco
- Department of Translational Research and the New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (M.T.); (F.B.); (A.L.C.); (B.T.); (B.C.); (G.P.)
| | - Anna Laura Costa
- Department of Translational Research and the New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (M.T.); (F.B.); (A.L.C.); (B.T.); (B.C.); (G.P.)
| | - Benedetta Tuvo
- Department of Translational Research and the New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (M.T.); (F.B.); (A.L.C.); (B.T.); (B.C.); (G.P.)
| | - Beatrice Casini
- Department of Translational Research and the New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (M.T.); (F.B.); (A.L.C.); (B.T.); (B.C.); (G.P.)
| | - Gaetano Privitera
- Department of Translational Research and the New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (M.T.); (F.B.); (A.L.C.); (B.T.); (B.C.); (G.P.)
| | | | - Angelo Baggiani
- Department of Translational Research and the New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (M.T.); (F.B.); (A.L.C.); (B.T.); (B.C.); (G.P.)
- Correspondence: ; Tel.: +50-221-3583; Fax: +50-221-3588
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24
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da Costa MC, Ferreira BA, de Moura FBR, de Lima LG, Araujo FDA, Mota FCD. Evaluation of 4% stabilized Sodium Hypochlorite activity in the repair of cutaneous excisional wounds in mice. Injury 2021; 52:2075-2083. [PMID: 34147247 DOI: 10.1016/j.injury.2021.05.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 05/18/2021] [Accepted: 05/20/2021] [Indexed: 02/02/2023]
Abstract
Wounds are conditions largely present in the clinical routine, and even though frequent, their complete resolution can be challenging. Several solutions can aid or stimulate the healing process, and for this reason, this work used a stabilized solution of 4% sodium hypochlorite for the treatment of excisional wounds in mice. This study was carried out in two distinct stages: in the first stage, the optimal concentration of the chlorinated solution was determined by using the sponge implantation technique in mouse subcutaneous tissue to evaluate the dose-response curve; and in the second phase, this concentration was tested in an experimental model of excisional skin wounds in mice. Soluble collagen, hemoglobin, myeloperoxidase (MPO) and N-acetyl-β-D-glycosaminidase (NAG) activity were assessed, and total, type I and type III collagen deposition were quantified in both stages. Based on the results presented in the sponge implantation study, the chlorinated solution at 150 ppm (0.015%) was chosen for use in a preclinical trial of skin healing in mice. At 1, 3, 7 and 14 days of treatment, the % wound area repair in the group treated with 150 ppm chlorinated solution was higher when compared to the control group, with statistical differences at all time points (*p≤ 0.05 and **p≤ 0.01). 150 ppm chlorinated solution obtained from a stabilized 4% sodium hypochlorite solution was effective in accelerating cutaneous excision wound repair in mice, showing a positive influence on tissue repair.
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Affiliation(s)
- Marcelo C da Costa
- Department of Veterinary Surgery, Paulista State University Júlio de Mesquita Filho, Access Road Highway Professor Paulo Donato Castelane Castelane S / N, Vila Industrial, [Zip Code]: 14884-900, Jaboticabal-SP, Brazil.
| | - Bruno A Ferreira
- Institute of Biomedical Sciences, Federal University of Uberlândia, Avenue. João Naves de Ávila, 2121 - Santa Monica, [Zip Code]: 1720, 38400-902, Uberlândia-MG, Brazil
| | - Francyelle B R de Moura
- Institute of Biology, Campinas State University, Street Monteiro Lobato, 255. [Zip Code]: 1308-862, Campinas-SP, Brazil
| | - Lara G de Lima
- Veterinarian, Federal University of Uberlândia, Avenue Mato Grosso, 3289 - Código postal [Zip Code]: 38405-314, Bloco 2S - Umuarama, Uberlândia - MG, Brazil
| | - Fernanda de A Araujo
- Institute of Biomedical Sciences, Federal University of Uberlândia, Avenue. João Naves de Ávila, 2121 - Santa Monica, [Zip Code]: 1720, 38400-902, Uberlândia-MG, Brazil
| | - Francisco C D Mota
- Department of Veterinary Surgery, Federal University of Uberlândia, Av. Mato Grosso, 3289 - [Zip Code]: 38405-314, Bloco 2S - Umuarama, Uberlândia - MG, Brazil.
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25
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Stawarz-Janeczek M, Kryczyk-Poprawa A, Muszyńska B, Opoka W, Pytko-Polończyk J. Disinfectants Used in Stomatology and SARS-CoV-2 Infection. Eur J Dent 2021; 15:388-400. [PMID: 33694135 PMCID: PMC8184310 DOI: 10.1055/s-0041-1724154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Effective disinfection is a basic procedure in medical facilities, including those conducting dental surgeries, where treatments for tissue discontinuity are also performed, as it is an important element of infection prevention. Disinfectants used in dentistry and dental and maxillofacial surgery include both inorganic (hydrogen peroxide, sodium chlorite-hypochlorite) and organic compounds (ethanol, isopropanol, peracetic acid, chlorhexidine, eugenol). Various mechanisms of action of disinfectants have been reported, which include destruction of the structure of bacterial and fungal cell membranes; damage of nucleic acids; denaturation of proteins, which in turn causes inhibition of enzyme activity; loss of cell membrane integrity; and decomposition of cell components. This article discusses the most important examples of substances used as disinfectants in dentistry and presents the mechanisms of their action with particular focus on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The search was conducted in ScienceDirect, PubMed, and Scopus databases. The interest of scientists in the use of disinfectants in dental practice is constantly growing, which results in the increasing number of publications on disinfection, sterilization, and asepsis. Many disinfectants often possess several of the abovementioned mechanisms of action. In addition, disinfectant preparations used in dental practice either contain one compound or are frequently a mixture of active compounds, which increases their range and effectiveness of antimicrobial action. Currently available information on disinfectants that can be used to prevent SARS-CoV-2 infection in dental practices was summarized.
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Affiliation(s)
- Magdalena Stawarz-Janeczek
- Department of Integrated Dentistry, Faculty of Medicine, Jagiellonian University Medical College, Kraków, Poland
| | - Agata Kryczyk-Poprawa
- Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Kraków, Poland
| | - Bożena Muszyńska
- Department of Pharmaceutical Botany, Faculty of Pharmacy, Jagiellonian University Medical College, Kraków, Poland
| | - Włodzimierz Opoka
- Department of Inorganic and Analytical Chemistry, Faculty of Pharmacy, Jagiellonian University Medical College, Kraków, Poland
| | - Jolanta Pytko-Polończyk
- Department of Integrated Dentistry, Faculty of Medicine, Jagiellonian University Medical College, Kraków, Poland
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26
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Jones IA, Joshi LT. Biocide Use in the Antimicrobial Era: A Review. Molecules 2021; 26:molecules26082276. [PMID: 33919993 PMCID: PMC8071000 DOI: 10.3390/molecules26082276] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 04/03/2021] [Accepted: 04/06/2021] [Indexed: 12/12/2022] Open
Abstract
Biocides are widely used in healthcare and industry to control infections and microbial contamination. Ineffectual disinfection of surfaces and inappropriate use of biocides can result in the survival of microorganisms such as bacteria and viruses on inanimate surfaces, often contributing to the transmission of infectious agents. Biocidal disinfectants employ varying modes of action to kill microorganisms, ranging from oxidization to solubilizing lipids. This review considers the main biocides used within healthcare and industry environments and highlights their modes of action, efficacy and relevance to disinfection of pathogenic bacteria. This information is vital for rational use and development of biocides in an era where microorganisms are becoming resistant to chemical antimicrobial agents.
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27
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Malyshev D, Dahlberg T, Wiklund K, Andersson PO, Henriksson S, Andersson M. Mode of Action of Disinfection Chemicals on the Bacterial Spore Structure and Their Raman Spectra. Anal Chem 2021; 93:3146-3153. [PMID: 33523636 PMCID: PMC7893628 DOI: 10.1021/acs.analchem.0c04519] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
![]()
Contamination of
toxic spore-forming bacteria is problematic since
spores can survive a plethora of disinfection chemicals and it is
hard to rapidly detect if the disinfection chemical has inactivated
the spores. Thus, robust decontamination strategies and reliable detection
methods to identify dead from viable spores are critical. In this
work, we investigate the chemical changes of Bacillus
thuringiensis spores treated with sporicidal agents
such as chlorine dioxide, peracetic acid, and sodium hypochlorite
using laser tweezers Raman spectroscopy. We also image treated spores
using SEM and TEM to verify if we can correlate structural changes
in the spores with changes to their Raman spectra. We found that over
30 min, chlorine dioxide did not change the Raman spectrum or the
spore structure, peracetic acid showed a time-dependent decrease in
the characteristic DNA/DPA peaks and ∼20% of the spores were
degraded and collapsed, and spores treated with sodium hypochlorite
showed an abrupt drop in DNA and DPA peaks within 20 min and some
structural damage to the exosporium. Structural changes appeared in
spores after 10 min, compared to the inactivation time of the spores,
which is less than a minute. We conclude that vibrational spectroscopy
provides powerful means to detect changes in spores but it might be
problematic to identify if spores are live or dead after a decontamination
procedure.
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Affiliation(s)
| | | | | | - Per Ola Andersson
- Swedish Defence Research Agency (FOI), Umeå, 906 21 Sweden.,Department of Engineering Sciences, Uppsala University, Box 35 751 03, Uppsala, Sweden
| | - Sara Henriksson
- Umeå Core Facility for Electron Microscopy, Umeå University, Umeå, 901 87 Sweden
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28
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Kerémi B, Márta K, Farkas K, Czumbel LM, Tóth B, Szakács Z, Csupor D, Czimmer J, Rumbus Z, Révész P, Németh A, Gerber G, Hegyi P, Varga G. Effects of Chlorine Dioxide on Oral Hygiene - A Systematic Review and Meta-analysis. Curr Pharm Des 2021; 26:3015-3025. [PMID: 32410557 PMCID: PMC8383470 DOI: 10.2174/1381612826666200515134450] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 04/29/2020] [Indexed: 12/26/2022]
Abstract
Background Effective and selective oral rinses are required in the daily medical and dental practice. Currently mouthwashes used have substantial side effects. Objectives Our aim was to evaluate the efficacy of chlorine dioxide-containing mouthwashes in comparison with other previously established mouth rinses in healthy adults using oral hygiene indices. Methods This work was registered in PROSPERO (CRD42018099059) and carried out using multiple databases and reported according to the PRISMA statement. The search terms used were “chlorine dioxide” AND “oral”, and only randomised controlled trials (RCTs) were included. The primary outcome was the alteration of the plaque index (PI), while the secondary outcomes were the gingival index (GI) and bacterial counts. For the risk of bias assessment, the Cochrane Risk of Bias Tool was used. Statistical analysis for data heterogeneity was performed by Q-value and I2-tests. Results 364 articles were found in the databases. After the selection process, only five RCTs were eligible for meta-analysis. Data heterogeneity was low. There were no statistical differences in effectiveness between chlorine dioxide and other effective mouth rinses in PI (0.720±0.119 vs 0.745±0.131; 95%; confidence intervals (CIs): 0.487-0.952 vs 0.489-1.001, respectively) and GI (0.712±0.130 vs 0.745±0.131; 95% CIs: 0.457–0.967 vs 0.489–1.001, respectively) and also in bacterial counts. Conclusion Chlorine dioxide reduces both plaque and gingival indices and bacterial counts in the oral cavity similar to other routinely used oral rinses, however, the evidence supporting this outcome is very limited. Therefore, further large scale RCTs are needed to decrease the risk of bias.
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Affiliation(s)
- Beáta Kerémi
- Department of Oral Biology, Faculty of Dentistry, Semmelweis University, Budapest, Hungary
| | - Katalin Márta
- Institute for Translational Medicine, Medical School, University of Pecs, Pecs, Hungary
| | - Kornélia Farkas
- Institute for Translational Medicine, Medical School, University of Pecs, Pecs, Hungary,Institute of Bioanalysis, Medical School, University of Pecs, Pecs, Hungary
| | - László M Czumbel
- Department of Oral Biology, Faculty of Dentistry, Semmelweis University, Budapest, Hungary
| | - Barbara Tóth
- Department of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged, Szeged, Hungary
| | - Zsolt Szakács
- Institute for Translational Medicine, Medical School, University of Pecs, Pecs, Hungary
| | - Dezső Csupor
- Department of Pharmacognosy, Interdisciplinary Excellence Centre, University of Szeged, Szeged, Hungary
| | - József Czimmer
- Division of Gastroenterology, First Department of Medicine, Medical School, University of Pecs, Pecs, Hungary
| | - Zoltán Rumbus
- Institute for Translational Medicine, Medical School, University of Pecs, Pecs, Hungary
| | - Péter Révész
- Department of Otorhinolaryngology (ENT), Medical School, University of Pecs, Pecs, Hungary
| | - Adrienn Németh
- Department of Otorhinolaryngology (ENT), Medical School, University of Pecs, Pecs, Hungary
| | - Gábor Gerber
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Péter Hegyi
- Institute for Translational Medicine, Medical School, University of Pecs, Pecs, Hungary,Szentágothai Research Centre, University of Pecs, Pecs, Hungary
| | - Gábor Varga
- Department of Oral Biology, Faculty of Dentistry, Semmelweis University, Budapest, Hungary
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29
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Buckley D, Dharmasena M, Wang H, Huang J, Adams J, Pettigrew C, Fraser A, Jiang X. Efficacy of novel aqueous photo-chlorine dioxide against a human norovirus surrogate, bacteriophage MS2 and Clostridium difficile endospores, in suspension, on stainless steel and under greenhouse conditions. J Appl Microbiol 2020; 130:1531-1545. [PMID: 33025608 DOI: 10.1111/jam.14887] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 09/12/2020] [Accepted: 10/01/2020] [Indexed: 11/27/2022]
Abstract
AIMS The efficacy of a novel photochemical method for generating chlorine dioxide (photoClO2 ) was evaluated against human noroviruses (HuNoV) surrogate, bacteriophage MS2, and Clostridium difficile endospores. METHODS AND RESULTS Chlorine dioxide was generated by mixing 1% sodium chlorite with 10 parts-per-million (ppm) Eosin Y and irradiating with a photo-activator-excitable light. PhotoClO2 efficacy was assessed against bacteriophage MS2 and C. difficile endospores in suspension, on hard surfaces and greenhouse conditions under soiled and unsoiled conditions. The estimated effective photoClO2 produced and consumed was 20·39 ± 0·16 ppm at a rate of 8·16 ppm per min in a 1% sodium chlorite solution. In suspension, MS2 phage was reduced by 3·35 and >5·10 log10 PFU per ml in 120 and 90 min, with and without soil, respectively. At the same time, when dried on stainless steel surface, MS2 phage was reduced by >4·53 log10 PFU per carrier in 30 min under both conditions. On the other hand, C. difficile endospores in suspension were reduced by 2·26 and 3·65 log10 CFU per ml in 120 min with and without soiling, respectively. However, on stainless steel surface, maximal reductions of the C. difficile endospores were 0·8 and 1·5 log10 CFU per carrier with and without soiling, respectively, and a maximal reduction of 2·97 log10 CFU per carrier under greenhouse conditions at 24 h. CONCLUSIONS Overall, photoClO2 showed promise as a technology to control HuNoV contamination on environmental surfaces but requires further optimization and testing against C. difficile endospores. SIGNIFICANCE AND IMPACT OF THE STUDY Results from this investigation will serve as a model for how to generate and quantify photoClO2 and how to appropriately evaluate this new class of disinfectants against environmentally resilient pathogens: viruses and bacterial endospores.
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Affiliation(s)
- D Buckley
- Department of Biological Sciences, Clemson University, Clemson, SC, USA
| | - M Dharmasena
- Department of Food, Nutrition, and Packaging Sciences, Clemson University, Clemson, SC, USA
| | - H Wang
- Department of Food, Nutrition, and Packaging Sciences, Clemson University, Clemson, SC, USA
| | - J Huang
- Department of Food, Nutrition, and Packaging Sciences, Clemson University, Clemson, SC, USA
| | - J Adams
- The Procter and Gamble Co, Cincinnati, OH, USA
| | - C Pettigrew
- The Procter and Gamble Co, Cincinnati, OH, USA
| | - A Fraser
- Department of Food, Nutrition, and Packaging Sciences, Clemson University, Clemson, SC, USA
| | - X Jiang
- Department of Food, Nutrition, and Packaging Sciences, Clemson University, Clemson, SC, USA
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Láng O, Nagy KS, Láng J, Perczel-Kovách K, Herczegh A, Lohinai Z, Varga G, Kőhidai L. Comparative study of hyperpure chlorine dioxide with two other irrigants regarding the viability of periodontal ligament stem cells. Clin Oral Investig 2020; 25:2981-2992. [PMID: 33044682 PMCID: PMC8060220 DOI: 10.1007/s00784-020-03618-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 10/01/2020] [Indexed: 02/07/2023]
Abstract
Objectives Periodontal ligament stem cells (PDLSCs) have an underlined significance as their high proliferative capacity and multipotent differentiation provide an important therapeutic potential. The integrity of these cells is frequently disturbed by the routinely used irrigative compounds applied as periodontal or endodontic disinfectants (e.g., hydrogen peroxide (H2O2) and chlorhexidine (CHX)). Our objectives were (i) to monitor the cytotoxic effect of a novel dental irrigative compound, chlorine dioxide (ClO2), compared to two traditional agents (H2O2, CHX) on PDLSCs and (ii) to test whether the aging factor of PDLSC cultures determines cellular responsiveness to the chemicals tested. Methods Impedimetry (concentration-response study), WST-1 assays (WST = water soluble tetrazolium salt), and morphology analysis were performed to measure changes in cell viability induced by the 3 disinfectants; immunocytochemistry of stem cell markers (STRO-1, CD90, and CD105) measured the induced mesenchymal characteristics. Results Cell viability experiments demonstrated that the application of ClO2 does not lead to a significant decrease in viability of PLDSCs in concentrations used to kill microbes. On the contrary, traditional irrigants, H2O2, and CHX are highly toxic on PDLSCs. Aging of PLDSC cultures (passages 3 vs. 7) has characteristic effects on their responsiveness to these agents as the increased expression of mesenchymal stem cell markers turns to decreased. Conclusions and clinical relevance While the active ingredients of mouthwash (H2O2, CHX) applied in endodontic or periodontitis management have a serious toxic effect on PDLSCs, the novel hyperpure ClO2 is less toxic providing an environment favoring dental structure regenerations during disinfectant interventions. Electronic supplementary material The online version of this article (10.1007/s00784-020-03618-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Orsolya Láng
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
| | - Krisztina S Nagy
- Department of Oral Biology, Semmelweis University, Budapest, Hungary.,Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - Julia Láng
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary
| | - Katalin Perczel-Kovách
- Department of Oral Biology, Semmelweis University, Budapest, Hungary.,Department in Community Dentistry, Semmelweis University, Budapest, Hungary
| | - Anna Herczegh
- Department of Conservative Dentistry, Semmelweis University, Budapest, Hungary
| | - Zsolt Lohinai
- Department of Conservative Dentistry, Semmelweis University, Budapest, Hungary
| | - Gábor Varga
- Department of Oral Biology, Semmelweis University, Budapest, Hungary
| | - László Kőhidai
- Department of Genetics, Cell- and Immunobiology, Semmelweis University, Budapest, Hungary.
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Molnar K, Varga R, Jozsa B, Barczikai D, Krisch E, Nagy KS, Varga G, Jedlovszky-Hajdu A, Puskas JE. Investigation of the Cytotoxicity of Electrospun Polysuccinimide-Based Fiber Mats. Polymers (Basel) 2020; 12:E2324. [PMID: 33050638 PMCID: PMC7601339 DOI: 10.3390/polym12102324] [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: 09/14/2020] [Revised: 10/07/2020] [Accepted: 10/09/2020] [Indexed: 11/16/2022] Open
Abstract
This study investigated cell viability in the presence of allylamine-modified and plasma-treated electrospun polysuccinimide fiber mats (PSI-AAmp). Low pressure non-equilibrium plasma was used for crosslinking the PSI-AAm. Comparison of FTIR and XPS analyses demonstrated that crosslinking occurred on the surface of the samples. Cell viability was investigated using the MG-63 osteosarcoma cell line and WST-1 viability reagent. Since PSI hydrolyzes to poly(aspartic acid) (PASP), PASP was used in addition to the regular controls (cells only). Phase contrast showed normal morphology in all cases at 24 h; however, in the presence of PSI-AAmp at 72 h, some rounded, dead cells could also be seen, and proliferation was inhibited. Since proliferation in the presence of PASP alone was not inhibited, the cause of inhibition was not the final product of the hydrolysis. Further investigations will be carried out to pinpoint the cause.
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Affiliation(s)
- Kristof Molnar
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvarad ter 4, H-1089 Budapest, Hungary; (K.M.); (R.V.); (B.J.); (D.B.); (K.S.N.)
- Department of Food, Agricultural and Biological Engineering, College of Food, Agricultural, and Environmental Sciences, The Ohio State University, 222 FABE, 1680 Madison Avenue, Wooster, OH 44691, USA;
| | - Rita Varga
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvarad ter 4, H-1089 Budapest, Hungary; (K.M.); (R.V.); (B.J.); (D.B.); (K.S.N.)
| | - Benjamin Jozsa
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvarad ter 4, H-1089 Budapest, Hungary; (K.M.); (R.V.); (B.J.); (D.B.); (K.S.N.)
| | - Dora Barczikai
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvarad ter 4, H-1089 Budapest, Hungary; (K.M.); (R.V.); (B.J.); (D.B.); (K.S.N.)
| | - Eniko Krisch
- Department of Food, Agricultural and Biological Engineering, College of Food, Agricultural, and Environmental Sciences, The Ohio State University, 222 FABE, 1680 Madison Avenue, Wooster, OH 44691, USA;
| | - Krisztina S. Nagy
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvarad ter 4, H-1089 Budapest, Hungary; (K.M.); (R.V.); (B.J.); (D.B.); (K.S.N.)
- Department of Oral Biology, Semmelweis University, Nagyvarad ter 4, H-1089 Budapest, Hungary;
| | - Gabor Varga
- Department of Oral Biology, Semmelweis University, Nagyvarad ter 4, H-1089 Budapest, Hungary;
| | - Angela Jedlovszky-Hajdu
- Laboratory of Nanochemistry, Department of Biophysics and Radiation Biology, Semmelweis University, Nagyvarad ter 4, H-1089 Budapest, Hungary; (K.M.); (R.V.); (B.J.); (D.B.); (K.S.N.)
| | - Judit E. Puskas
- Department of Food, Agricultural and Biological Engineering, College of Food, Agricultural, and Environmental Sciences, The Ohio State University, 222 FABE, 1680 Madison Avenue, Wooster, OH 44691, USA;
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Venkei A, Eördegh G, Turzó K, Urbán E, Ungvári K. A simplified in vitro model for investigation of the antimicrobial efficacy of various antiseptic agents to prevent peri-implantitis. Acta Microbiol Immunol Hung 2020; 67:127-132. [PMID: 32160783 DOI: 10.1556/030.2020.01080] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Accepted: 01/01/2020] [Indexed: 01/16/2023]
Abstract
The biofilm formation by oral bacteria on the implant surface is one of the most remarkable factors of peri-implant infections, which may eventually lead to bone resorption and loss of the dental implant. Therefore, the elimination of biofilm is an essential step for the successful therapy of implant-related infections. In this work we created a basic in vitro model to evaluate the antibacterial effect of three widely used antiseptics.Commercially pure (CP4) titanium sample discs with sand blasted, acid etched, and polished surface were used. The discs were incubated with mono-cultures of Streptococcus mitis and Streptococcus salivarius. The adhered bacterial biofilms were treated with different antiseptics: chlorhexidine-digluconate (CHX), povidone-iodine (PI), and chlorine dioxide (CD) for 5 min and the control discs with ultrapure water. The antibacterial effect of the antiseptics was tested by colorimetric assay.According to the results, the PI and the CD were statistically the most effective in the elimination of the two test bacteria on both titanium surfaces after 5 min treatment time. The CD showed significant effect only against S. salivarius.Based on our results we conclude that PI and CD may be promising antibacterial agents to disinfecting the peri-implant site in the dental practice.
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Affiliation(s)
- Annamária Venkei
- 1Institute of Clinical Microbiology, Faculty of Medicine, University of Szeged, 6725, Semmelweis u. 6, Szeged, Hungary
| | - Gabriella Eördegh
- 2Department of Oral Biology and Experimental Dental Research, Faculty of Dentistry, University of Szeged, 6720, Tisza Lajos krt. 64, Szeged, Hungary
| | - Kinga Turzó
- 3Dentistry Program, Medical School, University of Pécs, 7621, Dischka Gy. u. 5, Pécs, Hungary
| | - Edit Urbán
- 1Institute of Clinical Microbiology, Faculty of Medicine, University of Szeged, 6725, Semmelweis u. 6, Szeged, Hungary
| | - Krisztina Ungvári
- 2Department of Oral Biology and Experimental Dental Research, Faculty of Dentistry, University of Szeged, 6720, Tisza Lajos krt. 64, Szeged, Hungary
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Kály-Kullai K, Wittmann M, Noszticzius Z, Rosivall L. Can chlorine dioxide prevent the spreading of coronavirus or other viral infections? Medical hypotheses. Physiol Int 2020; 107:1-11. [PMID: 32208977 DOI: 10.1556/2060.2020.00015] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Motivation Viruses have caused many epidemics throughout human history. The novel coronavirus [10] is just the latest example. A new viral outbreak can be unpredictable, and development of specific defense tools and countermeasures against the new virus remains time-consuming even in today's era of modern medical science and technology. In the lack of effective and specific medication or vaccination, it would be desirable to have a nonspecific protocol or substance to render the virus inactive, a substance/protocol, which could be applied whenever a new viral outbreak occurs. This is especially important in cases when the emerging new virus is as infectious as SARS-CoV-2 [4]. Aims and structure of the present communication In this editorial, we propose to consider the possibility of developing and implementing antiviral protocols by applying high purity aqueous chlorine dioxide (ClO2) solutions. The aim of this proposal is to initiate research that could lead to the introduction of practical and effective antiviral protocols. To this end, we first discuss some important properties of the ClO2 molecule, which make it an advantageous antiviral agent, then some earlier results of ClO2 gas application against viruses will be reviewed. Finally, we hypothesize on methods to control the spread of viral infections using aqueous ClO2 solutions.
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Affiliation(s)
- K Kály-Kullai
- 1Department of Physics, Group of Chemical Physics, Budapest University of Technology and Economics, Budapest, Hungary
| | - M Wittmann
- 1Department of Physics, Group of Chemical Physics, Budapest University of Technology and Economics, Budapest, Hungary
| | - Z Noszticzius
- 1Department of Physics, Group of Chemical Physics, Budapest University of Technology and Economics, Budapest, Hungary
| | - László Rosivall
- 2Institute of Translational Medicine and International Nephrology Research and Training Center, Semmelweis University, Budapest, Hungary
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Tan JN, Hwang CA, Huang L, Wu VCH, Hsiao HI. In Situ Generation of Chlorine Dioxide for Decontamination of Salmonella, Listeria monocytogenes, and Pathogenic Escherichia coli on Cantaloupes, Mung Beans, and Alfalfa Seeds. J Food Prot 2020; 83:287-294. [PMID: 31961232 DOI: 10.4315/0362-028x.jfp-19-434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 10/17/2019] [Indexed: 11/11/2022]
Abstract
ABSTRACT In situ generation of chlorine dioxide to reduce microbial populations on produce surfaces has been shown to be effective on produce models. This study examined the treatment for decontamination of bacterial pathogens on whole cantaloupes and sprout seeds. Whole cantaloupes, mung beans, and alfalfa seeds were inoculated with Salmonella, Listeria monocytogenes, and Shiga toxin-producing Escherichia coli, sprayed with or dipped in 0.4 to 1.6% sodium chlorite (NaClO2) solutions, dried, and treated with 6 mM hydrochloric acid (HCl; sequential treatment). Controls were samples treated with NaClO2 or HCl (individual treatment). The pathogen populations on samples before and after treatments were enumerated to determine the reductions of pathogen populations by the treatments. The methods of applying NaClO2 and HCl (dipping for 30 min or spraying 0.2 g on cantaloupe rind [2 by 2 cm]), NaClO2 concentrations of 0.4 to 1.6% for cantaloupes, and treatment times of 5, 15, and 30 min for sprout seeds were evaluated to identify treatment parameters. For cantaloupes treated with spraying with 1.6% NaClO2, the sequential treatment caused significantly (P < 0.05) higher reductions (6.2 to 7.7 log CFU/cm2) than the combined reductions (3.2 to 5.2 log CFU/cm2) by the individual treatments. For cantaloupes treated by dipping in 1.6% NaClO2 and by spraying with 0.4 and 0.8% NaClO2, the reductions caused by the sequential treatment were not significantly (P > 0.05) different from those by the individual treatments. For mung beans, sequential 15- and 30-min treatments caused significantly (P < 0.05) higher reductions of 4.3 to 5.0 and 4.7 to 6.7 log CFU/g, respectively, than the individual treatments. The sequential 15-min treatment also caused high reductions of 5.1 to 7.3 log CFU/g on alfalfa seeds. The treatments did not bleach the color of cantaloupes and did not affect the germination rates of mung beans and alfalfa seeds. This study identified 1.6% NaClO2 and 6 mM HCl for sequential spraying treatment for cantaloupes and for sequential dipping (15-min) treatment for mung beans and alfalfa seeds that may be used for decontamination of whole cantaloupes and sprout seeds. HIGHLIGHTS
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Affiliation(s)
- Jing Ni Tan
- Department of Food Science, National Taiwan Ocean University, 2 Beining Road, Jhongjheng District, Keelung City 202, Taiwan
| | - Cheng-An Hwang
- Residue Chemistry and Predictive Microbiology Research Unit, Eastern Regional Research Center, U.S. Department of Agriculture, Agricultural Research Service, 600 East Mermaid Lane, Wyndmoor, Pennsylvania 19038, USA
| | - Lihan Huang
- Residue Chemistry and Predictive Microbiology Research Unit, Eastern Regional Research Center, U.S. Department of Agriculture, Agricultural Research Service, 600 East Mermaid Lane, Wyndmoor, Pennsylvania 19038, USA
| | - Vivian C H Wu
- Produce Safety and Microbiology Research Unit, Western Regional Research Center, U.S. Department of Agriculture, Agricultural Research Service, 800 Buchanan Street, Albany, California 94710, USA (ORCID: https://orcid.org/0000-0002-1525-1078 [V.C.H.W.])
| | - Hsin-I Hsiao
- Department of Food Science, National Taiwan Ocean University, 2 Beining Road, Jhongjheng District, Keelung City 202, Taiwan
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Villa A, Sonis ST. An update on pharmacotherapies in active development for the management of cancer regimen-associated oral mucositis. Expert Opin Pharmacother 2020; 21:541-548. [DOI: 10.1080/14656566.2020.1718652] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Alessandro Villa
- Divisions of Oral Medicine and Dentistry, Brigham and Women’s Hospital and the Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Oral Medicine, Infection and Immunity. Harvard School of Dental Medicine, Boston, MA, USA
- Primary Endpoint Solutions, Watertown, MA, USA
| | - Stephen T. Sonis
- Divisions of Oral Medicine and Dentistry, Brigham and Women’s Hospital and the Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Oral Medicine, Infection and Immunity. Harvard School of Dental Medicine, Boston, MA, USA
- Primary Endpoint Solutions, Watertown, MA, USA
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Poly-Gamma-Glutamic Acid Functions as an Eective Lubricant with Antimicrobial Activity in Multipurpose Contact Lens Care Solutions. Polymers (Basel) 2019; 11:polym11061050. [PMID: 31208136 PMCID: PMC6630909 DOI: 10.3390/polym11061050] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 05/26/2019] [Accepted: 06/13/2019] [Indexed: 12/03/2022] Open
Abstract
In order to perform the multiple functions of disinfection, cleansing, and storage, preservatives are often added to contact lens care solutions. The disadvantage of adding preservatives is that this often causes various eye conditions. However, lens care solutions would not be able to disinfect in the absence of such preservatives. In addition, comfort is an important issue for contact lens wearers due to the long periods of time they are worn. It has been shown that lower friction coefficients are correlated with increased comfort. We have previously developed a multipurpose contact lens care solution in which poly-gamma-glutamic acid (γ-PGA) was the main ingredient. In this study, we investigated the antimicrobial activity and lubricating property of our care solution. We showed that there was a synergetic effect of γ-PGA and chlorine dioxide on antimicrobial activity. We also demonstrated that γ-PGA functioned as a lubricating agent. Our results provided evidence of γ-PGA acting as a multi-functional polymer that could be applied in contact lens care solutions.
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Anna H, Barnabás P, Zsolt L, Romána Z. Tracking of the degradation process of chlorhexidine digluconate and ethylenediaminetetraacetic acid in the presence of hyper-pure chlorine dioxide in endodontic disinfection. J Pharm Biomed Anal 2019; 164:360-364. [DOI: 10.1016/j.jpba.2018.11.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 10/29/2018] [Accepted: 11/01/2018] [Indexed: 11/25/2022]
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Palcsó B, Moldován Z, Süvegh K, Herczegh A, Zelkó R. Chlorine dioxide-loaded poly(acrylic acid) gels for prolonged antimicrobial effect. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 98:782-788. [PMID: 30813084 DOI: 10.1016/j.msec.2019.01.043] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 12/13/2018] [Accepted: 01/10/2019] [Indexed: 10/27/2022]
Abstract
Chlorine dioxide, the so-called "ideal biocide", can be successfully applied as an antiseptic agent based on its rapid and safe antimicrobial property. One of the significant limitations of its topical or oral use is that the chlorine dioxide residence time in aqueous solution is very short due to the volatility of the gas. Therefore, the primary purpose of the present study was to increase the duration of chlorine dioxide effect by creating a system capable of loading the gas for a prolonged time and gradually releasing it at the site of action. Poly(acrylic acid) gels of various chlorine dioxide and polymer concentrations were formulated to achieve this goal. A two-factor, three-level face-centred central composite design was applied for the formulation. The microstructure of the gels was tracked by positron annihilation lifetime spectroscopy based on the ortho-positronium (o-Ps) lifetime distributions with the residual chlorine concentrations, determined by iodometric titration and their antibacterial effects. The results indicate that the polymer possesses two functions. On the one hand, as a diffusion barrier inhibits the fugacity of the gaseous chlorine dioxide but on the other side, the polymer chains form an arranged supramolecular structure with the hydrated forms of chlorine dioxide thus resulting in its sustained fugacity. The latter showed optimum as a function of the polymer concentration in the investigated range (0.1-0.3% w/w). The o-Ps lifetime distributions confirmed the microstructural changes of the formulations and were in good agreement with the analytical and microbiological evaluation. The application of chlorine dioxide-loaded bioadhesive gels could be a promising alternative for the effective and safe treatment of topical infections.
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Affiliation(s)
- Barnabás Palcsó
- University Pharmacy Department of Pharmacy Administration, Semmelweis University, Hőgyes Endre utca 7-9, H-1092 Budapest, Hungary
| | - Zsófia Moldován
- Department of Conservative Dentistry, Semmelweis University, Szentkirályi utca 47, H-1088 Budapest, Hungary
| | - Károly Süvegh
- Laboratory of Nuclear Chemistry, Eötvös Loránd University/HAS Chemical Research Center, P.O. Box 32, H-1518 Budapest 112, Hungary
| | - Anna Herczegh
- Department of Conservative Dentistry, Semmelweis University, Szentkirályi utca 47, H-1088 Budapest, Hungary
| | - Romána Zelkó
- University Pharmacy Department of Pharmacy Administration, Semmelweis University, Hőgyes Endre utca 7-9, H-1092 Budapest, Hungary.
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Wu MS, Xu X. Inactivation of antibiotic-resistant bacteria by chlorine dioxide in soil and shifts in community composition. RSC Adv 2019; 9:6526-6532. [PMID: 35518509 PMCID: PMC9061123 DOI: 10.1039/c8ra07997h] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 02/10/2019] [Indexed: 11/21/2022] Open
Abstract
Antibiotic-resistant bacteria are common widespread in soil and the most resistant species isStaphylococcus aureus.Sphingomonas,ArthrobacterandMassiliaare sensitive to ClO2.MicromonosporaceaeandThaumarchaeotaare more resistant to ClO2.
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Affiliation(s)
- M. S. Wu
- College of Resources and Civil Engineering
- Northeastern University
- Shenyang 100819
- China
- School of Resources and Materials
| | - X. Xu
- Tongji Zhejiang College
- Jiaxing
- China
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Biswas D, Tiwari M, Tiwari V. Comparative mechanism based study on disinfectants against multidrug-resistant Acinetobacter baumannii. J Cell Biochem 2018; 119:10314-10326. [PMID: 30145822 DOI: 10.1002/jcb.27373] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 06/28/2018] [Indexed: 12/19/2022]
Abstract
Acinetobacter baumannii has emerged as a hospital-acquired pathogen and has spread in the hospital settings, leading to enhanced nosocomial outbreaks associated with high death rates. Therefore, the aim of the current study is to determine the effective concentration of disinfectants like sodium hypochlorite, hydrogen peroxide, and chlorine dioxide, against multidrug-resistant (MDR) strains of A. baumannii. In this study, we have investigated the effect of disinfectants on different MDR strains i.e. RS307, RS6694, RS7434, RS10953, RS122, and sensitive strain ATCC-19606 of A. baumannii, via differential growth curves analysis, disc diffusion assay, estimation of reactive oxygen species (ROS), lipid peroxidation, and protein carbonylation. All the results collectively showed that 1% sodium hypochlorite (P value < 0.0027), 2.5% hydrogen peroxide (P value = 0.0032), and 10 mM (P value = 0.017) chlorine dioxide significantly inhibit the growth of MDR strains of A. baumannii. A significant increase in the ROS generations, altered lipid peroxidation, and a decrease in protein carbonylation was also observed after treatment with disinfectants, which confirmed its ROS-dependent damage mechanism. These disinfectants also enhance the membrane leakage of reducing sugar, protein, and DNA. The current study highlights and recommends the use of 2.5% hydrogen peroxide to control the MDR strains of A. baumannii in the hospital setup. Therefore, the present results will help in selecting concentrations of different disinfectants for regular use in hospital setups to eradicate the multidrug-resistant A. baumannii from the hospital setup.
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Affiliation(s)
- Deepika Biswas
- Department of Biochemistry, Central University of Rajasthan, Bandarsindri, Ajmer, India
| | - Monalisa Tiwari
- Department of Biochemistry, Central University of Rajasthan, Bandarsindri, Ajmer, India
| | - Vishvanath Tiwari
- Department of Biochemistry, Central University of Rajasthan, Bandarsindri, Ajmer, India
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Venkatnarayanan S, Sriyutha Murthy P, Kirubagaran R, Venugopalan VP. Chlorine dioxide as an alternative antifouling biocide for cooling water systems: Toxicity to larval barnacle Amphibalanus reticulatus (Utinomi). MARINE POLLUTION BULLETIN 2017; 124:803-810. [PMID: 28111001 DOI: 10.1016/j.marpolbul.2017.01.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 01/06/2017] [Accepted: 01/12/2017] [Indexed: 06/06/2023]
Abstract
Chlorine dioxide (ClO2) is seen as an effective alternative to chlorine, which is widely used as an antifouling biocide. However, data on its efficacy against marine macrofoulants is scanty. In this study, acute toxicity of ClO2 to larval forms of the fouling barnacle Amphibalanus reticulatus was investigated. ClO2 treatment at 0.1mg/L for 20min elicited 45-63% reduction in naupliar metamorphosis, 70% inhibition of cyprid settlement and 80% inhibition of metamorphosis to juveniles. Increase in concentration to 0.2mg/L did not result in any significant difference in the settlement inhibition or metamorphosis. Treatment with 0.2mg/L of ClO2 elicited substantial reduction in the settlement of barnacle larvae compared to control. The study indicates the possibility of using ClO2 as an alternative antifouling biocide in power plant cooling water systems. However, more work needs to be done on the environmental effects of such switchover, which we are currently undertaking.
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Affiliation(s)
- Srinivas Venkatnarayanan
- Biofouling and Biofilm Processes Section, Water & Steam Chemistry Division, Bhabha Atomic Research Centre, Kalpakkam 603 102, Tamil Nadu, India
| | - P Sriyutha Murthy
- Biofouling and Biofilm Processes Section, Water & Steam Chemistry Division, Bhabha Atomic Research Centre, Kalpakkam 603 102, Tamil Nadu, India; Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400 094, India
| | - Ramalingam Kirubagaran
- Marine Biotechnology, ESSO-National Institute of Ocean Technology, Chennai 600 100, India
| | - Vayalam P Venugopalan
- Biofouling and Biofilm Processes Section, Water & Steam Chemistry Division, Bhabha Atomic Research Centre, Kalpakkam 603 102, Tamil Nadu, India; Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400 094, India.
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Praeger U, Herppich WB, Hassenberg K. Aqueous chlorine dioxide treatment of horticultural produce: Effects on microbial safety and produce quality–A review. Crit Rev Food Sci Nutr 2017; 58:318-333. [DOI: 10.1080/10408398.2016.1169157] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Ulrike Praeger
- Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Department Horticultural Engineering, Potsdam, Germany
| | - Werner B. Herppich
- Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Department Horticultural Engineering, Potsdam, Germany
| | - Karin Hassenberg
- Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB), Department Horticultural Engineering, Potsdam, Germany
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Manuel CA, Bagby SM, Reisinger JA, Pugazhenthi U, Pitts TM, Keysar SB, Arcaroli JJ, Leszczynski JK. Procedure for Horizontal Transfer of Patient-Derived Xenograft Tumors to Eliminate Corynebacterium bovis. JOURNAL OF THE AMERICAN ASSOCIATION FOR LABORATORY ANIMAL SCIENCE : JAALAS 2017; 56:166-172. [PMID: 28315646 PMCID: PMC5361042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 08/19/2016] [Accepted: 10/07/2016] [Indexed: 06/06/2023]
Abstract
Human patient-derived xenograft (PDX) tumors, propagated in immunodeficient mice, are rapidly growing in use as a model for cancer research. Horizontal transfer between mice, without in vitro cell culture, allows these tumors to retain many of their unique characteristics from their individual patient of origin. However, the immunodeficient mouse strains used to grow these tumors are susceptible to numerous opportunistic pathogens, including Corynebacterium bovis. At our institution, 2 in vivo tumor banks of PDX tumors had been maintained within nude mouse colonies enzootically infected with C. bovis. Elimination of C. bovis from these colonies required the aseptic harvest and horizontal transfer of tumor tissue between infected and naïve recipient mice without cross-contamination. Out of necessity, we developed a standard operating procedure using enhancements to traditional aseptic surgical technique with concurrent application of both procedural and physical barriers to prevent C. bovis transmission. By using these methods, all 61 unique PDX tumor models were successfully harvested from C. bovis-infected mice and transferred into recipient mice without transmission of infection. Our data demonstrate that, in situations where C. bovis-free colonies can be established and maintained, this procedure can successfully be used to eliminate C. bovis from an in vivo tumor bank of valuable PDX tumors.
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Affiliation(s)
- Christopher A Manuel
- Office of Laboratory Animal Resources, Department of Pathology, University of Colorado Denver, Anschutz Medical Campus, University of Colorado Cancer Center, Aurora, Colorado;,
| | - Stacey M Bagby
- School of Medicine, Division of Medical Oncology, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado
| | - Julie A Reisinger
- School of Medicine, Division of Medical Oncology, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado
| | - Umarani Pugazhenthi
- School of Medicine, Division of Endocrinology, Metabolism, and Diabetes, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado
| | - Todd M Pitts
- University of Colorado Cancer Center, School of Medicine, Division of Medical Oncology, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado
| | - Stephen B Keysar
- University of Colorado Cancer Center, School of Medicine, Division of Medical Oncology, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado
| | - John J Arcaroli
- University of Colorado Cancer Center, School of Medicine, Division of Medical Oncology, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado
| | - Jori K Leszczynski
- Office of Laboratory Animal Resources, Department of Pathology, University of Colorado Denver, Anschutz Medical Campus, Aurora, Colorado
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Reactions of aquacobalamin and cob(II)alamin with chlorite and chlorine dioxide. J Biol Inorg Chem 2016; 22:453-459. [DOI: 10.1007/s00775-016-1417-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 11/14/2016] [Indexed: 10/20/2022]
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Ahmed ST, Kim G, Islam MM, Mun HS, Bostami AR, Yang CJ. Effects of dietary chlorine dioxide on growth performance, intestinal and excreta microbiology, and odorous gas emissions from broiler excreta. J APPL POULTRY RES 2015. [DOI: 10.3382/japr/pfv058] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Stratilo CW, Crichton MKF, Sawyer TW. Decontamination Efficacy and Skin Toxicity of Two Decontaminants against Bacillus anthracis. PLoS One 2015; 10:e0138491. [PMID: 26394165 PMCID: PMC4578770 DOI: 10.1371/journal.pone.0138491] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Accepted: 08/31/2015] [Indexed: 12/30/2022] Open
Abstract
Decontamination of bacterial endospores such as Bacillus anthracis has traditionally required the use of harsh or caustic chemicals. The aim of this study was to evaluate the efficacy of a chlorine dioxide decontaminant in killing Bacillus anthracis spores in solution and on a human skin simulant (porcine cadaver skin), compared to that of commonly used sodium hypochlorite or soapy water decontamination procedures. In addition, the relative toxicities of these decontaminants were compared in human skin keratinocyte primary cultures. The chlorine dioxide decontaminant was similarly effective to sodium hypochlorite in reducing spore numbers of Bacillus anthracis Ames in liquid suspension after a 10 minute exposure. After five minutes, the chlorine dioxide product was significantly more efficacious. Decontamination of isolated swine skin contaminated with Bacillus anthracis Sterne with the chlorine dioxide product resulted in no viable spores sampled. The toxicity of the chlorine dioxide decontaminant was up to two orders of magnitude less than that of sodium hypochlorite in human skin keratinocyte cultures. In summary, the chlorine dioxide based decontaminant efficiently killed Bacillus anthracis spores in liquid suspension, as well as on isolated swine skin, and was less toxic than sodium hypochlorite in cultures of human skin keratinocytes.
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Affiliation(s)
- Chad W Stratilo
- Biological Threat Defence Section, Defence Research and Development Canada - Suffield Research Centre, Medicine Hat, Alberta, Canada
| | - Melissa K F Crichton
- Biological Threat Defence Section, Defence Research and Development Canada - Suffield Research Centre, Medicine Hat, Alberta, Canada
| | - Thomas W Sawyer
- Casualty Management Section, Defence Research and Development Canada - Suffield Research Centre, Medicine Hat, Alberta, Canada
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Yadav SR, Kini VV, Padhye A. Inhibition of Tongue Coat and Dental Plaque Formation by Stabilized Chlorine Dioxide Vs Chlorhexidine Mouthrinse: A Randomized, Triple Blinded Study. J Clin Diagn Res 2015; 9:ZC69-74. [PMID: 26501017 PMCID: PMC4606346 DOI: 10.7860/jcdr/2015/14587.6510] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Accepted: 07/20/2015] [Indexed: 11/24/2022]
Abstract
BACKGROUND Chlorine dioxide (ClO2) is an oxidizing agent with known bactericidal, viricidal and fungicidal properties. Its efficacy in reducing the halitosis has been established by previous literature. However, data evaluating its antiplaque property is scarce. Chlorhexidine (CHX) is considered as the gold standard and an effective adjunctive to mechanical plaque removal. However, it is associated with few reversible side effects. Therefore a study was conducted to assess the antiplaque property of ClO2 containing mouthrinse against CHX mouthrinse. AIMS AND OBJECTIVES To evaluate the efficacy of stabilized chlorine dioxide containing mouthrinse and CHX containing mouthrinse in inhibition of tongue coat accumulation and dental plaque formation using a four day plaque regrowth model clinically and microbiologically in a healthy dental cohort. MATERIALS AND METHODS A Single Center, Randomized, Triple blinded, Microbiological clinical trial was conducted involving 25 healthy dental students volunteers (11 males, 14 females). Two commercially available mouthrinse: Mouthrinse A - Aqueous based ClO2 mouthrinse Freshchlor(®) and Mouthrinse B - Aqueous based 0.2% CHX mouthrinse Hexidine(®) were selected as the test products. Subjects were asked to rinse and gargle for 1 minute with the allocated mouthrinse under supervision after supragingival scaling, polishing and tongue coat removal. After four hours, smears were taken from the buccal mucosa and tooth surface. On the fifth day from baseline of four day non brushing plaque regrowth model the samples were again taken from buccal mucosa and tooth surface followed by recording of plaque scores by Rastogi Modification of Navy Plaque index, extent of tongue coat by Winkel's tongue coating index and measuring tongue coat wet weight in grams. The samples collected were subjected to microbial analysis and the results were expressed as colony forming units (CFUs) per sample. STATISTICAL ANALYSIS The Data was analysed using SPSS 16.00 and presented using descriptive statistics. Independent t-test was used for the comparison between mouthrinse A groups & mouthrinse B group. RESULTS The plaque scores and Winkels tongue coat scores, wet tongue coat weight recorded on the fifth day after the use of the two mouthrinse didn't show a statistically significant difference. The CFU per sample from tooth and mucosa after four hours revealed low bacteria count with respect to mouthrinse B however the CFU obtained on the fifth day did not show a statistically significant difference between the two mouthrinse. CONCLUSION The clinical antiplaque efficacy of CHX and ClO2 mouthwash is comparable and so is the efficacy in reducing the oral bacterial load.
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Affiliation(s)
- Seema Roodmal Yadav
- Post Graduate Student, Department of Periodontology, Mahatma Gandhi Mission’s Dental College and Hospital, Kamothe, Navi Mumbai, Maharashtra, India
| | - Vineet Vaman Kini
- Professor, Department of Periodontology, Mahatma Gandhi Mission’s Dental College and Hospital, Kamothe, Navi Mumbai, Maharashtra, India
| | - Ashvini Padhye
- Professor and Head of Department, Department of Periodontology, Mahatma Gandhi Mission’s Dental College and Hospital, Kamothe, Navi Mumbai, Maharashtra, India
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Herczegh A, Gyurkovics M, Ghidan Á, Megyesi M, Lohinai Z. Effect of dentin powder on the antimicrobial properties of hyperpure chlorine-dioxide and its comparison to conventional endodontic disinfecting agents. Acta Microbiol Immunol Hung 2014; 61:209-20. [PMID: 25046882 DOI: 10.1556/amicr.61.2014.2.10] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Previously we found that the high purity chlorine-dioxide(ClO2) has a very potent disinfectant efficacy on oral pathogenic microorganisms and as a root canal irrigant it is able to eliminate the experimental Enterococcus faecalis(E. faecalis) infection from the root canal system. This study examines whether the presence of dentin powder influences the antibacterial efficacy of ClO 2. METHODS In an in vitro dentin powder model the following irrigants were tested against planktonic E. faecalis: 2% chlorhexidine (CHX), 2.5% sodium hypochlorite (NaOCl), 0.12%ClO2 (Solumium) and one local root canal medicament: saturated Ca(OH)2. Survival of bacteria exposed to agents without and with human dentin powder or preincubated with dentin powder was investigated. The effect of the dentin powder on ClO2 concentration was investigated by titrations. RESULTS Without dentin powder ClO 2 killed all E. faecalis and delivered the best result already after 1 minute; however, after longer contact time with dentin the difference between the disinfectants disappeared. The presence of dentin powder decreased the concentration of ClO 2 and attenuated the antibacterial efficiency of ClO2 and Ca(OH)2, but did not decrease of CHX and NaOCl.Preincubation with dentin powder caused significant loss of antibacterial activity of all investigated agents, ClO2 and Ca(OH)2 having the highest reduction. CONCLUSION As the presence of dentin powder had a negative effect on the efficacy of disinfectants, the importance of elimination of dentin scrapings and smear layer from the root canal system during endodontic treatments is highly recommended. ClO 2 can be effective for a final rinse.
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Affiliation(s)
- Anna Herczegh
- 1 Semmelweis University Department of Conservative Dentistry Budapest Hungary
| | - Milán Gyurkovics
- 1 Semmelweis University Department of Conservative Dentistry Budapest Hungary
| | - Ágoston Ghidan
- 2 Semmelweis University Department of Medical Microbiology Budapest Hungary
| | - Marianna Megyesi
- 3 Budapest University of Technology and Economics Department of Physics Budapest Hungary
| | - Zsolt Lohinai
- 1 Semmelweis University Department of Conservative Dentistry Budapest Hungary
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