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Oliinychenko YK, Ekonomou SI, Tiwari BK, Stratakos AC. Assessing the Effects of Cold Atmospheric Plasma on the Natural Microbiota and Quality of Pork during Storage. Foods 2024; 13:1015. [PMID: 38611321 PMCID: PMC11011429 DOI: 10.3390/foods13071015] [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: 03/06/2024] [Revised: 03/22/2024] [Accepted: 03/23/2024] [Indexed: 04/14/2024] Open
Abstract
Cold atmospheric plasma (CAP) is a novel non-thermal technology with significant potential for use in meat processing to prolong shelf life. The objective of the study was to evaluate the efficiency of CAP treatment on the natural microbiota and quality traits of pork stored for 8 days at 4 °C. CAP treatment was applied by employing piezoelectric direct discharge technology to treat pork samples for 0, 3, 6, and 9 min. Reductions of approximately 0.8-1.7 log CFU/g were observed in total viable counts (TVC) and Pseudomonas spp. levels for CAP treatments longer than 3 min, immediately after treatment. A storage study revealed that CAP-treated pork (>6 min) had significantly lower levels of TVC, Pseudomonas spp., and Enterobacteriaceae throughout storage. Regarding quality traits, CAP application for longer than 3 min significantly increased water retention and yellowness and decreased meat redness compared to untreated pork. However, other parameters such as pH, tenderness, and lightness exhibited no statistically significant differences between untreated and CAP-treated pork. Lipid oxidation levels were higher only for the 9-min treatment compared to untreated pork. Our results revealed that CAP is a promising technology that can extend the microbiological shelf life of pork during refrigeration storage.
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Affiliation(s)
- Yelyzaveta K. Oliinychenko
- School of Applied Sciences, College for Health, Science and Society, University of the West of England, Coldharbour Ln, Bristol BS16 1QY, UK; (Y.K.O.); (S.I.E.)
| | - Sotirios I. Ekonomou
- School of Applied Sciences, College for Health, Science and Society, University of the West of England, Coldharbour Ln, Bristol BS16 1QY, UK; (Y.K.O.); (S.I.E.)
| | - Brijesh K. Tiwari
- Department of Food Biosciences, Teagasc Food Research Centre, Teagasc, Ashtown, D15 DY05 Dublin, Ireland;
| | - Alexandros Ch. Stratakos
- School of Applied Sciences, College for Health, Science and Society, University of the West of England, Coldharbour Ln, Bristol BS16 1QY, UK; (Y.K.O.); (S.I.E.)
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2
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Winiecki M, Stepczyńska M, Moraczewski K, Skowronski L, Trzcinski M, Rerek T, Malinowski R. Effect of Low-Temperature Oxygen Plasma Treatment of Titanium Alloy Surface on Tannic Acid Coating Deposition. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1065. [PMID: 38473537 DOI: 10.3390/ma17051065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 02/20/2024] [Accepted: 02/23/2024] [Indexed: 03/14/2024]
Abstract
In this study, the effect of low-temperature oxygen plasma treatment with various powers of a titanium alloy surface on the structural and morphological properties of a substrate and the deposition of a tannic acid coating was investigated. The surface characteristics of the titanium alloy were evaluated by X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), atomic force microscopy (AFM), and contact angle measurements. Following this, the tannic acid coatings were deposited on the titanium alloy substrates and the structural and morphological properties of the tannic acid coatings deposited were subject to characterization by XPS, SEM, and spectroscopic ellipsometry (SE) measurements. The results show that the low-temperature oxygen plasma treatment of titanium alloys leads to the formation of titanium dioxides that contain -OH groups on the surface being accompanied by a reduction in carbon, which imparts hydrophilicity to the titanium substrate, and the effect increases with the applied plasma power. The performed titanium alloy substrate modification translates into the quality of the deposited tannic acid coating standing out by higher uniformity of the coating, lower number of defects indicating delamination or incomplete bonding of the coating with the substrate, lower number of cracks, thinner cracks, and higher thickness of the tannic acid coatings compared to the non-treated titanium alloy substrate. A similar effect is observed as the applied plasma power increases.
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Affiliation(s)
- Mariusz Winiecki
- Department of Constructional Materials and Biomaterials, Faculty of Materials Engineering, Kazimierz Wielki University, Chodkiewicza 30, 85-064 Bydgoszcz, Poland
| | - Magdalena Stepczyńska
- Department of Polymer Materials Engineering, Faculty of Materials Engineering, Kazimierz Wielki University, Chodkiewicza 30, 85-064 Bydgoszcz, Poland
| | - Krzysztof Moraczewski
- Department of Polymer Materials Engineering, Faculty of Materials Engineering, Kazimierz Wielki University, Chodkiewicza 30, 85-064 Bydgoszcz, Poland
| | - Lukasz Skowronski
- Division of Surface Science, Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, Kaliskiego 7, 85-796 Bydgoszcz, Poland
| | - Marek Trzcinski
- Division of Surface Science, Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, Kaliskiego 7, 85-796 Bydgoszcz, Poland
| | - Tomasz Rerek
- Division of Surface Science, Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, Kaliskiego 7, 85-796 Bydgoszcz, Poland
| | - Rafał Malinowski
- Łukasiewicz Research Network-Institute for Engineering of Polymer Materials and Dyes, Marii Skłodowskiej-Curie 55, 87-100 Torun, Poland
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Konchekov EM, Gudkova VV, Burmistrov DE, Konkova AS, Zimina MA, Khatueva MD, Polyakova VA, Stepanenko AA, Pavlik TI, Borzosekov VD, Malakhov DV, Kolik LV, Gusein-zade N, Gudkov SV. Bacterial Decontamination of Water-Containing Objects Using Piezoelectric Direct Discharge Plasma and Plasma Jet. Biomolecules 2024; 14:181. [PMID: 38397418 PMCID: PMC10886754 DOI: 10.3390/biom14020181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Revised: 01/25/2024] [Accepted: 01/31/2024] [Indexed: 02/25/2024] Open
Abstract
Cold atmospheric plasma has become a widespread tool in bacterial decontamination, harnessing reactive oxygen and nitrogen species to neutralize bacteria on surfaces and in the air. This technology is often employed in healthcare, food processing, water treatment, etc. One of the most energy-efficient and universal methods for creating cold atmospheric plasma is the initiation of a piezoelectric direct discharge. The article presents a study of the bactericidal effect of piezoelectric direct discharge plasma generated using the multifunctional source "CAPKO". This device allows for the modification of the method of plasma generation "on the fly" by replacing a unit (cap) on the working device. The results of the generation of reactive oxygen and nitrogen species in a buffer solution in the modes of direct discharge in air and a plasma jet with an argon flow are presented. The bactericidal effect of these types of plasma against the bacteria E. coli BL21 (DE3) was studied. The issues of scaling the treatment technique are considered.
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Affiliation(s)
- Evgeny M. Konchekov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (V.V.G.); (D.E.B.); (N.G.-z.); (S.V.G.)
| | - Victoria V. Gudkova
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (V.V.G.); (D.E.B.); (N.G.-z.); (S.V.G.)
- Institute of Physical Research and Technology, Peoples’ Friendship University of Russia (RUDN University), 117198 Moscow, Russia
| | - Dmitriy E. Burmistrov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (V.V.G.); (D.E.B.); (N.G.-z.); (S.V.G.)
| | - Aleksandra S. Konkova
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (V.V.G.); (D.E.B.); (N.G.-z.); (S.V.G.)
| | - Maria A. Zimina
- Institute of Physical Research and Technology, Peoples’ Friendship University of Russia (RUDN University), 117198 Moscow, Russia
| | - Mariam D. Khatueva
- Institute of Physical Research and Technology, Peoples’ Friendship University of Russia (RUDN University), 117198 Moscow, Russia
| | - Vlada A. Polyakova
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (V.V.G.); (D.E.B.); (N.G.-z.); (S.V.G.)
| | - Alexandra A. Stepanenko
- Center for Precision Genome Editing and Genetic Technologies for Biomedicine, Institute of Gene Biology, Russian Academy of Sciences, 119334 Moscow, Russia
| | - Tatyana I. Pavlik
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (V.V.G.); (D.E.B.); (N.G.-z.); (S.V.G.)
| | - Valentin D. Borzosekov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (V.V.G.); (D.E.B.); (N.G.-z.); (S.V.G.)
- Institute of Physical Research and Technology, Peoples’ Friendship University of Russia (RUDN University), 117198 Moscow, Russia
| | - Dmitry V. Malakhov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (V.V.G.); (D.E.B.); (N.G.-z.); (S.V.G.)
| | - Leonid V. Kolik
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (V.V.G.); (D.E.B.); (N.G.-z.); (S.V.G.)
| | - Namik Gusein-zade
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (V.V.G.); (D.E.B.); (N.G.-z.); (S.V.G.)
| | - Sergey V. Gudkov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia; (V.V.G.); (D.E.B.); (N.G.-z.); (S.V.G.)
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Lunder M, Dahle S, Fink R. Cold atmospheric plasma for surface disinfection: a promising weapon against deleterious meticillin-resistant Staphylococcus aureus biofilms. J Hosp Infect 2024; 143:64-75. [PMID: 37939884 DOI: 10.1016/j.jhin.2023.10.014] [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: 07/26/2023] [Revised: 10/02/2023] [Accepted: 10/15/2023] [Indexed: 11/10/2023]
Abstract
BACKGROUND Bacteria are becoming increasingly resistant to classical antimicrobial agents, so new approaches need to be explored. AIM To assess the potential of cold atmospheric plasma for the management of meticillin-resistant Staphylococcus aureus (MRSA). METHODS The 24, 48, and 72 h resistant and susceptible S. aureus biofilms were exposed to 60, 120, and 180 s treatment with plasma. FINDINGS Increasing the treatment time results in higher cell reduction for both susceptible and resistant strains of S. aureus (P < 0.05). Up to log10 reduction factor of 5.24 cfu/cm2 can be achieved in 180 s of plasma treatment. Furthermore, plasma can substantially alter the cell's metabolisms and impact cell membrane integrity. However, it has not been shown that plasma can reduce biofilm biomass in the case of 24 h and 48 h biofilms, although the 72 h biofilm was more susceptible, and its biomass was decreased (P < 0.05). The accumulation of intrabacterial reactive oxygen species was also observed, which confirms the plasma's induction of oxidative stress. Finally, it was shown that continuous plasma exposure of bacterial cells does not cause resistance to plasma, nor is resistance developed to cefoxitin. CONCLUSION Cold atmospheric plasma is a good candidate for S. aureus and MRSA biofilm treatment and may therefore be of value in the bacterial resistance crisis.
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Affiliation(s)
- M Lunder
- University of Ljubljana, Faculty of Health Sciences, Ljubljana, Slovenia
| | - S Dahle
- University of Ljubljana, Biotechnical Faculty, Ljubljana, Slovenia
| | - R Fink
- University of Ljubljana, Faculty of Health Sciences, Ljubljana, Slovenia.
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Dahle S, Žigon J, Fink R. Cold plasma for sustainable control of hygienically relevant biofilms. The interaction of plasma distance and exposure time. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2024; 34:340-354. [PMID: 36436211 DOI: 10.1080/09603123.2022.2149710] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 11/14/2022] [Indexed: 06/16/2023]
Abstract
This study aimed to analyse the efficacy of a new cold plasma device adapted for treatment with a low power consumption . We tested the reduction of bacterial cells in biofilms of E. coli, S. aureus and P. aeruginosa. . The results show significant differences between bacterial cells, suggesting that Gramme-positive S. aureus is less susceptible to plasma treatment than Gramme-negative E. coli and P. aeruginosa. Increasing the exposure time and decreasing the distance decreases the number of cells in the biofilm. However, the combination of close distance and long exposure time resulted in synergistic effects. We demonstrated a reduction of up to 6.6 log CFU cm2 for E. coli at 1 mm and an exposure time of 60 seconds. All these indicate that the new cold plasma jet device can be an important key to ensuring hygiene and numerous applications in medicine and engineering are possible.
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Affiliation(s)
- Sebastian Dahle
- Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Jure Žigon
- Biotechnical Faculty, University of Ljubljana, Ljubljana, Slovenia
| | - Rok Fink
- Faculty of Health Sciences, University of Ljubljana, Ljubljana, Slovenia
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Vyas HK, Xia B, Alam D, Gracie NP, Rothwell JG, Rice SA, Carter D, Cullen PJ, Mai-Prochnow A. Plasma activated water as a pre-treatment strategy in the context of biofilm-infected chronic wounds. Biofilm 2023; 6:100154. [PMID: 37771391 PMCID: PMC10522953 DOI: 10.1016/j.bioflm.2023.100154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/11/2023] [Accepted: 09/11/2023] [Indexed: 09/30/2023] Open
Abstract
Healing and treatment of chronic wounds are often complicated due to biofilm formation by pathogens. Here, the efficacy of plasma activated water (PAW) as a pre-treatment strategy has been investigated prior to the application of topical antiseptics polyhexamethylene biguanide, povidone iodine, and MediHoney, which are routinely used to treat chronic wounds. The efficacy of this treatment strategy was determined against biofilms of Escherichia coli formed on a plastic substratum and on a human keratinocyte monolayer substratum used as an in vitro biofilm-skin epithelial cell model. PAW pre-treatment greatly increased the killing efficacy of all the three antiseptics to eradicate the E. coli biofilms formed on the plastic and keratinocyte substrates. However, the efficacy of the combined PAW-antiseptic treatment and single treatments using PAW or antiseptic alone was lower for biofilms formed in the in vitro biofilm-skin epithelial cell model compared to the plastic substratum. Scavenging assays demonstrated that reactive species present within the PAW were largely responsible for its anti-biofilm activity. PAW treatment resulted in significant intracellular reactive oxygen and nitrogen species accumulation within the E. coli biofilms, while also rapidly acting on the microbial membrane leading to outer membrane permeabilisation and depolarisation. Together, these factors contribute to significant cell death, potentiating the antibacterial effect of the assessed antiseptics.
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Affiliation(s)
- Heema K.N. Vyas
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, New South Wales, Australia
- The Sydney Institute for Infectious Diseases, The University of Sydney, Sydney, New South Wales, Australia
| | - Binbin Xia
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, New South Wales, Australia
| | - David Alam
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, New South Wales, Australia
| | - Nicholas P. Gracie
- School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Joanna G. Rothwell
- School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Scott A. Rice
- Agriculture and Food, Microbiomes for One Systems Health, Commonwealth Scientific and Industrial Research Organisation, Sydney, New South Wales, Australia
- The Australian Institute for Microbiology and Infection, University of Technology Sydney, Sydney, New South Wales, Australia
| | - Dee Carter
- The Sydney Institute for Infectious Diseases, The University of Sydney, Sydney, New South Wales, Australia
- School of Life and Environmental Sciences, The University of Sydney, Sydney, New South Wales, Australia
| | - Patrick J. Cullen
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, New South Wales, Australia
| | - Anne Mai-Prochnow
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, New South Wales, Australia
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7
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Sojithamporn P, Leksakul K, Sawangrat C, Charoenchai N, Boonyawan D. Degradation of Pesticide Residues in Water, Soil, and Food Products via Cold Plasma Technology. Foods 2023; 12:4386. [PMID: 38137190 PMCID: PMC10743213 DOI: 10.3390/foods12244386] [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: 10/17/2023] [Revised: 11/30/2023] [Accepted: 12/02/2023] [Indexed: 12/24/2023] Open
Abstract
Water, soil, and food products contain pesticide residues. These residues result from excessive pesticides use, motivated by the fact that agricultural productivity can be increased by the use of these pesticides. The accumulation of these residues in the body can cause health problems, leading to food safety concerns. Cold plasma technology has been successfully employed in various applications, such as seed germination, bacterial inactivation, wound disinfection, surface sterilization, and pesticide degradation. In recent years, researchers have increasingly explored the effectiveness of cold plasma technology in the degradation of pesticide residues. Most studies have shown promising outcomes, encouraging further research and scaling-up for commercialization. This review summarizes the use of cold plasma as an emerging technology for pesticide degradation in terms of the plasma system and configuration. It also outlines the key findings in this area. The most frequently adopted plasma systems for each application are identified, and the mechanisms underlying pesticide degradation using cold plasma technology are discussed. The possible factors influencing pesticide degradation efficiency, challenges in research, and future trends are also discussed. This review demonstrates that despite the nascent nature of the technology, the use of cold plasma shows considerable potential in regards to pesticide residue degradation, particularly in food applications.
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Affiliation(s)
- Phanumas Sojithamporn
- Graduate Program in Industrial Engineering, Department of Industrial Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand;
| | - Komgrit Leksakul
- Department of Industrial Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand; (C.S.); (N.C.)
| | - Choncharoen Sawangrat
- Department of Industrial Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand; (C.S.); (N.C.)
| | - Nivit Charoenchai
- Department of Industrial Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand; (C.S.); (N.C.)
| | - Dheerawan Boonyawan
- Plasma and Beam Physics Research Center (PBP), Faculty of Science, Chiang Mai University, Chiang Mai 50200, Thailand;
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8
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Maybin JA, Thompson TP, Flynn PB, Skvortsov T, Hickok NJ, Freeman TA, Gilmore BF. Cold atmospheric pressure plasma-antibiotic synergy in Pseudomonas aeruginosa biofilms is mediated via oxidative stress response. Biofilm 2023; 5:100122. [PMID: 37214348 PMCID: PMC10196807 DOI: 10.1016/j.bioflm.2023.100122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 04/06/2023] [Accepted: 04/06/2023] [Indexed: 05/24/2023] Open
Abstract
Cold atmospheric-pressure plasma (CAP) has emerged as a potential alternative or adjuvant to conventional antibiotics for the treatment of bacterial infections, including those caused by antibiotic-resistant pathogens. The potential of sub-lethal CAP exposures to synergise conventional antimicrobials for the eradication of Pseudomonas aeruginosa biofilms is investigated in this study. The efficacy of antimicrobials following or in the absence of sub-lethal CAP pre-treatment in P. aeruginosa biofilms was assessed. CAP pre-treatment resulted in an increase in both planktonic and biofilm antimicrobial sensitivity for all three strains tested (PAO1, PA14, and PA10548), with both minimum inhibitory concentrations (MICs) and minimum biofilm eradication concentrations (MBECs) of individual antimicrobials, being significantly reduced following CAP pre-treatment of the biofilm (512-fold reduction with ciprofloxacin/gentamicin; and a 256-fold reduction with tobramycin). At all concentrations of antimicrobial used, the combination of sub-lethal CAP exposure and antimicrobials was effective at increasing time-to-peak metabolism, as measured by isothermal microcalorimetry, again indicating enhanced susceptibility. CAP is known to damage bacterial cell membranes and DNA by causing oxidative stress through the in situ generation of reactive oxygen and nitrogen species (RONS). While the exact mechanism is not clear, oxidative stress on outer membrane proteins is thought to damage/perturb cell membranes, confirmed by ATP and LDH leakage, allowing antimicrobials to penetrate the bacterial cell more effectively, thus increasing bacterial susceptibility. Transcriptomic analysis, reveals that cold-plasma mediated oxidative stress caused upregulation of P. aeruginosa superoxide dismutase, cbb3 oxidases, catalases, and peroxidases, and upregulation in denitrification genes, suggesting that P. aeruginosa uses these enzymes to degrade RONS and mitigate the effects of cold plasma mediated oxidative stress. CAP treatment also led to an increased production of the signalling molecule ppGpp in P. aeruginosa, indicative of a stringent response being established. Although we did not directly measure persister cell formation, this stringent response may potentially be associated with the formation of persister cells in biofilm cultures. The production of ppGpp and polyphosphate may be associated with protein synthesis inhibition and increase efflux pump activity, factors which can result in antimicrobial tolerance. The transcriptomic analysis also showed that by 6 h post-treatment, there was downregulation in ribosome modulation factor, which is involved in the formation of persister cells, suggesting that the cells had begun to resuscitate/recover. In addition, CAP treatment at 4 h post-exposure caused downregulation of the virulence factors pyoverdine and pyocyanin; by 6 h post-exposure, virulence factor production was increasing. Transcriptomic analysis provides valuable insights into the mechanisms by which P. aeruginosa biofilms exhibits enhanced susceptibility to antimicrobials. Overall, these findings suggest, for the first time, that short CAP sub-lethal pre-treatment can be an effective strategy for enhancing the susceptibility of P. aeruginosa biofilms to antimicrobials and provides important mechanistic insights into cold plasma-antimicrobial synergy. Transcriptomic analysis of the response to, and recovery from, sub-lethal cold plasma exposures in P. aeruginosa biofilms improves our current understanding of cold plasma biofilm interactions.
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Affiliation(s)
- Jordanne-Amee Maybin
- Biofilm Research Group, School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Thomas P Thompson
- Biofilm Research Group, School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Padrig B Flynn
- Biofilm Research Group, School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Timofey Skvortsov
- Biofilm Research Group, School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Noreen J Hickok
- Department of Orthopaedic Surgery Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA, 19107, USA
| | - Theresa A Freeman
- Department of Orthopaedic Surgery Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, PA, 19107, USA
| | - Brendan F Gilmore
- Biofilm Research Group, School of Pharmacy, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast, BT9 7BL, UK
- Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, UK
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9
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Baz A, Bakri A, Butcher M, Short B, Ghimire B, Gaur N, Jenkins T, Short RD, Riggio M, Williams C, Ramage G, Brown JL. Staphylococcus aureus strains exhibit heterogenous tolerance to direct cold atmospheric plasma therapy. Biofilm 2023; 5:100123. [PMID: 37138646 PMCID: PMC10149328 DOI: 10.1016/j.bioflm.2023.100123] [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: 12/23/2022] [Revised: 04/04/2023] [Accepted: 04/12/2023] [Indexed: 05/05/2023] Open
Abstract
The global clinical and socioeconomic impact of chronic wounds is substantial. The main difficulty that clinicians face during the treatment of chronic wounds is the risk of infection at the wound site. Infected wounds arise from an accumulation of microbial aggregates in the wound bed, leading to the formation of polymicrobial biofilms that can be largely resistant to antibiotic therapy. Therefore, it is essential for studies to identify novel therapeutics to alleviate biofilm infections. One innovative technique is the use of cold atmospheric plasma (CAP) which has been shown to possess promising antimicrobial and immunomodulatory properties. Here, different clinically relevant biofilm models will be treated with cold atmospheric plasma to assess its efficacy and killing effects. Biofilm viability was assessed using live dead qPCR, and morphological changes associated with CAP evaluated using scanning electron microscopy (SEM). Results indicated that CAP was effective against Candida albicans and Pseudomonas aeruginosa, both as mono-species biofilms and when grown in a triadic model system. CAP also significantly reduced viability in the nosocomial pathogen, Candida auris. Staphylococcus aureus Newman exhibited a level of tolerance to CAP therapy, both when grown alone or in the triadic model when grown alongside C. albicans and P. aeruginosa. However, this degree of tolerance exhibited by S. aureus was strain dependent. At a microscopic level, biofilm treatment led to subtle changes in morphology in the susceptible biofilms, with evidence of cellular deflation and shrinkage. Taken together, these results indicate a promising application of direct CAP therapy in combatting wound and skin-related biofilm infections, although biofilm composition may affect the treatment efficacy.
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Affiliation(s)
- Abdullah Baz
- Oral Sciences Research Group, Glasgow Dental School, School of Medicine, Dentistry & Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8TA, United Kingdom
- Glasgow Biofilm Research Network, 378 Sauchiehall Street, Glasgow, G2 3JZ, United Kingdom
| | - Ahmed Bakri
- Oral Sciences Research Group, Glasgow Dental School, School of Medicine, Dentistry & Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8TA, United Kingdom
- Glasgow Biofilm Research Network, 378 Sauchiehall Street, Glasgow, G2 3JZ, United Kingdom
| | - Mark Butcher
- Oral Sciences Research Group, Glasgow Dental School, School of Medicine, Dentistry & Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8TA, United Kingdom
- Glasgow Biofilm Research Network, 378 Sauchiehall Street, Glasgow, G2 3JZ, United Kingdom
| | - Bryn Short
- Oral Sciences Research Group, Glasgow Dental School, School of Medicine, Dentistry & Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8TA, United Kingdom
- Glasgow Biofilm Research Network, 378 Sauchiehall Street, Glasgow, G2 3JZ, United Kingdom
| | - Bhagirath Ghimire
- Department of Chemistry and Material Science Institute, University of Lancaster, Lancaster, LA1 4YB, United Kingdom
| | - Nishtha Gaur
- Department of Chemistry and Material Science Institute, University of Lancaster, Lancaster, LA1 4YB, United Kingdom
| | - Toby Jenkins
- Department of Chemistry, University of Bath, Bath, BA2 7AY, United Kingdom
| | - Robert D. Short
- Department of Chemistry and Material Science Institute, University of Lancaster, Lancaster, LA1 4YB, United Kingdom
| | - Marcello Riggio
- Oral Sciences Research Group, Glasgow Dental School, School of Medicine, Dentistry & Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8TA, United Kingdom
- Glasgow Biofilm Research Network, 378 Sauchiehall Street, Glasgow, G2 3JZ, United Kingdom
| | - Craig Williams
- Glasgow Biofilm Research Network, 378 Sauchiehall Street, Glasgow, G2 3JZ, United Kingdom
- Microbiology Department, Lancaster Royal Infirmary, University of Lancaster, Lancaster, LA1 4YW, United Kingdom
| | - Gordon Ramage
- Oral Sciences Research Group, Glasgow Dental School, School of Medicine, Dentistry & Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8TA, United Kingdom
- Glasgow Biofilm Research Network, 378 Sauchiehall Street, Glasgow, G2 3JZ, United Kingdom
| | - Jason L. Brown
- Oral Sciences Research Group, Glasgow Dental School, School of Medicine, Dentistry & Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8TA, United Kingdom
- Glasgow Biofilm Research Network, 378 Sauchiehall Street, Glasgow, G2 3JZ, United Kingdom
- Corresponding author. Oral Sciences Research Group, Glasgow Dental School, School of Medicine, Dentistry and Nursing, College of Medical, Veterinary and Life Sciences, University of Glasgow, 378 Sauchiehall Street, Glasgow, G2 3JZ, UK.
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10
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Barjasteh A, Kaushik N, Choi EH, Kaushik NK. Cold Atmospheric Pressure Plasma: A Growing Paradigm in Diabetic Wound Healing-Mechanism and Clinical Significance. Int J Mol Sci 2023; 24:16657. [PMID: 38068979 PMCID: PMC10706109 DOI: 10.3390/ijms242316657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 11/17/2023] [Accepted: 11/20/2023] [Indexed: 12/18/2023] Open
Abstract
Diabetes is one of the most significant causes of death all over the world. This illness, due to abnormal blood glucose levels, leads to impaired wound healing and, as a result, foot ulcers. These ulcers cannot heal quickly in diabetic patients and may finally result in amputation. In recent years, different research has been conducted to heal diabetic foot ulcers: one of them is using cold atmospheric pressure plasma. Nowadays, cold atmospheric pressure plasma is highly regarded in medicine because of its positive effects and lack of side effects. These conditions have caused plasma to be considered a promising technology in medicine and especially diabetic wound healing because studies show that it can heal chronic wounds that are resistant to standard treatments. The positive effects of plasma are due to different reactive species, UV radiation, and electromagnetic fields. This work reviews ongoing cold atmospheric pressure plasma improvements in diabetic wound healing. It shows that plasma can be a promising tool in treating chronic wounds, including ones resulting from diabetes.
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Affiliation(s)
- Azadeh Barjasteh
- Department of Physics, Lorestan University, Khorramabad 68151-44316, Iran;
| | - Neha Kaushik
- Department of Biotechnology, College of Engineering, The University of Suwon, Hwaseong 18323, Republic of Korea;
| | - Eun Ha Choi
- Department of Electrical and Biological Physics/Plasma, Bioscience Research Center, Kwangwoon University, Seoul 01897, Republic of Korea;
| | - Nagendra Kumar Kaushik
- Department of Electrical and Biological Physics/Plasma, Bioscience Research Center, Kwangwoon University, Seoul 01897, Republic of Korea;
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11
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Wang Y, Liu Y, Zhao Y, Sun Y, Duan M, Wang H, Dai R, Liu Y, Li X, Jia F. Bactericidal efficacy difference between air and nitrogen cold atmospheric plasma on Bacillus cereus: Inactivation mechanism of Gram-positive bacteria at the cellular and molecular level. Food Res Int 2023; 173:113204. [PMID: 37803533 DOI: 10.1016/j.foodres.2023.113204] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 06/19/2023] [Accepted: 06/27/2023] [Indexed: 10/08/2023]
Abstract
As an emerging food processing technology, cold atmospheric plasma (CAP) has attracted great attention in the field of microbial inactivation. Although CAP has been proven to effectively inactivate a variety of foodborne pathogens, there is less research on the inactivation of Bacillus cereus, and the exact inactivation mechanism is still unclear. Elucidating the inactivation mechanism will help to develop and optimize this sterilization method, with the prospective application in industrialized food production. This study aims to explore the bactericidal efficacy difference between air and nitrogen CAP on B. cereus, a typical Gram-positive bacterium, and reveals the inactivation mechanism of CAP at the cellular and molecular level, by observing the change of the cell membrane, cell morphological damage, intracellular antioxidant enzyme activity and cellular biomacromolecules changes. The results showed that both air CAP and nitrogen CAP could effectively inactivate B. cereus, which was due to the reactive oxygen and nitrogen species (RONS) generated by the plasma causing bacterial death. The damage pathways of CAP on Gram-positive bacteria could be explained by disrupting the bacterial cell membrane and cell morphology, disturbing the intracellular redox homeostasis, and destroying biomacromolecules in the cells. The differences in active species generated by the plasma were the main reason for the different bactericidal efficiencies of air CAP and nitrogen CAP, where air CAP producing RONS with stronger oxidative capacity in a shorter time. This study indicates that air CAP is an effective, inexpensive and green technology for B. cereus inactivation, providing a basis for industrial application in food processing.
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Affiliation(s)
- Yuhan Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yana Liu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yijie Zhao
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yingying Sun
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Miaolin Duan
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Han Wang
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Ruitong Dai
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Yi Liu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Xingmin Li
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China.
| | - Fei Jia
- Department of Biological and Agricultural Engineering, University of Arkansas, Fayetteville, AR 72701, USA.
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12
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Hamza IA, El-Kalliny AS, Abd-Elmaksoud S, Marouf MA, Abdel-Wahed MS, El-Liethy MA, Hefny MM. Cold atmospheric plasma: a sustainable approach to inactivating viruses, bacteria, and protozoa with remediation of organic pollutants in river water and wastewater. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:116214-116226. [PMID: 37910365 PMCID: PMC10682252 DOI: 10.1007/s11356-023-30298-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Accepted: 10/02/2023] [Indexed: 11/03/2023]
Abstract
Innovative technologies are needed to enhance access to clean water and avoid waterborne diseases. We investigated the performance of cold atmospheric plasma (CAP), a clean and sustainable approach for microbial inactivation and total organic carbon (TOC) degradation in environmental water. Water matrices played a crucial role in the performance of CAP efficacy; for example, complete removal of ɸX174 from dH2O required 1 min of treatment, while ɸX174 reductions of ~ 2log10 and 4log10 were obtained after 10 min of CAP exposure in river water and wastewater samples, respectively. Similarly, after 10 min of CAP treatment, bacterial concentrations decreased by 3 log10 and 4 log10, in river and wastewater samples, respectively. In contrast, after 30 s of contact time, a 4 log10 reduction of bacteria was accomplished in dH2O. Complete removal of Acanthamoeba from dH2O was found after 30 min of CAP treatment, whereas it was not removed from surface water or wastewater at the same exposure time. Additionally, the approach successfully reduced TOC, and the degradation kinetics of TOC were represented by pseudo-first-order. CAP showed higher rates of TOC degradation in the final effluent of the wastewater treatment plant compared to surface water. The difference in CAP performance between river water and wastewater could be attributed to the bulk structure of humic acids in river water compared to small organic byproducts in the final effluent of WWTP. Overall, the findings reported here support the idea that CAP holds promise as a sustainable solution for controlling pathogens, removing organic water pollution, and integrating with traditional purification processes. Low-cost systems may advance CAP technology and increase its widespread use.
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Affiliation(s)
- Ibrahim Ahmed Hamza
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St., Dokki, Giza, 12622, Egypt.
| | - Amer S El-Kalliny
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St., Dokki, Giza, 12622, Egypt
| | - Sherif Abd-Elmaksoud
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St., Dokki, Giza, 12622, Egypt
| | - Mohamed A Marouf
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St., Dokki, Giza, 12622, Egypt
| | - Mahmoud S Abdel-Wahed
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St., Dokki, Giza, 12622, Egypt
| | - Mohamed Azab El-Liethy
- Water Pollution Research Department, National Research Centre, 33 El Buhouth St., Dokki, Giza, 12622, Egypt
| | - Mohamed Mokhtar Hefny
- Engineering Mathematics and Physics Department, Faculty of Engineering and Technology, Future University in Egypt, Cairo, Egypt
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13
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Jayasena DD, Kang T, Wijayasekara KN, Jo C. Innovative Application of Cold Plasma Technology in Meat and Its Products. Food Sci Anim Resour 2023; 43:1087-1110. [PMID: 37969327 PMCID: PMC10636222 DOI: 10.5851/kosfa.2023.e31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/16/2023] [Accepted: 06/16/2023] [Indexed: 11/17/2023] Open
Abstract
The growing demand for sustainable food production and the rising consumer preference for fresh, healthy, and safe food products have been driving the need for innovative methods for processing and preserving food. In the meat industry, this demand has led to the development of new interventions aimed at extending the shelf life of meats and its products while maintaining their quality and nutritional value. Cold plasma has recently emerged as a subject of great interest in the meat industry due to its potential to enhance the microbiological safety of meat and its products. This review discusses the latest research on the possible application of cold plasma in the meat processing industry, considering its effects on various quality attributes and its potential for meat preservation and enhancement. In this regard, many studies have reported substantial antimicrobial efficacy of cold plasma technology in beef, pork, lamb and chicken, and their products with negligible changes in their physicochemical attributes. Further, the application of cold plasma in meat processing has shown promising results as a potential novel curing agent for cured meat products. Understanding the mechanisms of action and the interactions between cold plasma and food ingredients is crucial for further exploring the potential of this technology in the meat industry, ultimately leading to the development of safe and high-quality meat products using cold plasma technology.
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Affiliation(s)
- Dinesh D. Jayasena
- Department of Animal Science, Faculty of
Animal Science and Export Agriculture, Uva Wellassa
University, Badulla 90000, Sri Lanka
| | - Taemin Kang
- Department of Agricultural Biotechnology,
Center for Food and Bioconvergence, and Research Institute of Agriculture
and Life Science, Seoul National University, Seoul 08826,
Korea
| | - Kaushalya N. Wijayasekara
- Department of Animal Science, Faculty of
Animal Science and Export Agriculture, Uva Wellassa
University, Badulla 90000, Sri Lanka
| | - Cheorun Jo
- Department of Agricultural Biotechnology,
Center for Food and Bioconvergence, and Research Institute of Agriculture
and Life Science, Seoul National University, Seoul 08826,
Korea
- Institute of Green Bio Science and
Technology, Seoul National University, Pyeongchang 25354,
Korea
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14
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Larkin JO, Mozden SC, Chyan Y, Zheng Q, Cherukuri P, Tour JM, Ball ZT. Capacitively Coupled Plasma from Laser-Induced Graphene Points to Ozone as the Major Mediator of Antibacterial Activity. ACS APPLIED MATERIALS & INTERFACES 2023; 15:45601-45605. [PMID: 37724983 DOI: 10.1021/acsami.3c09216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
Low-temperature plasma is an emerging approach for the treatment of bacterial infections. Nonchemical treatments such as cold plasma offer potential solutions to antibiotic resistance. We investigated the use of laser-induced graphene as an inexpensive, lightweight, and portable electrode for generating cold plasma. At the same time, the mechanism or molecular mediators of cold plasma-induced antibacterial activity remain poorly understood. This study validates graphene as an efficient structure for producing therapeutic cold plasma, and this study also indicates that ozone is the primary mediator of antibacterial activity in graphene-mediated cold plasmas for bacterial growth under the conditions studied.
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Affiliation(s)
- James O Larkin
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Sarah C Mozden
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Yieu Chyan
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Qingxin Zheng
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Paul Cherukuri
- Institute of Biosciences and Bioengineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department of Electrical and Computer Engineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Rice Nexus, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - James M Tour
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Smalley-Curl Institute and the NanoCarbon Center, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Department of Computer Science, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Zachary T Ball
- Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, United States
- Institute of Biosciences and Bioengineering, Rice University, 6100 Main Street, Houston, Texas 77005, United States
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15
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Mohseni P, Ghorbani A, Fariborzi N. Exploring the potential of cold plasma therapy in treating bacterial infections in veterinary medicine: opportunities and challenges. Front Vet Sci 2023; 10:1240596. [PMID: 37720476 PMCID: PMC10502341 DOI: 10.3389/fvets.2023.1240596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 08/21/2023] [Indexed: 09/19/2023] Open
Abstract
Cold plasma therapy is a novel approach that has shown significant promise in treating bacterial infections in veterinary medicine. Cold plasma possesses the potential to eliminate various bacteria, including those that are resistant to antibiotics, which renders it a desirable substitute for traditional antibiotics. Furthermore, it can enhance the immune system and facilitate the process of wound healing. However, there are some challenges associated with the use of cold plasma in veterinary medicine, such as achieving consistent and uniform exposure to the affected area, determining optimal treatment conditions, and evaluating the long-term impact on animal health. This paper explores the potential of cold plasma therapy in veterinary medicine for managing bacterial diseases, including respiratory infections, skin infections, and wound infections such as Clostridium botulinum, Clostridium perfringens, Bacillus cereus, and Bacillus subtilis. It also shows the opportunities and challenges associated with its use. In conclusion, the paper highlights the promising potential of utilizing cold plasma in veterinary medicine. However, to gain a comprehensive understanding of its benefits and limitations, further research is required. Future studies should concentrate on refining treatment protocols and assessing the long-term effects of cold plasma therapy on bacterial infections and the overall health of animals.
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Affiliation(s)
- Parvin Mohseni
- Department of Pathobiology, Faculty of Veterinary Medicine, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Abozar Ghorbani
- Nuclear Agriculture Research School, Nuclear Science and Technology Research Institute (NSTRI), Karaj, Iran
| | - Niloofar Fariborzi
- Department of Biology and Control of Diseases Vector, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
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16
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Zhang H, Zhang C, Han Q. Mechanisms of bacterial inhibition and tolerance around cold atmospheric plasma. Appl Microbiol Biotechnol 2023:10.1007/s00253-023-12618-w. [PMID: 37421472 PMCID: PMC10390405 DOI: 10.1007/s00253-023-12618-w] [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: 01/21/2023] [Revised: 05/29/2023] [Accepted: 06/01/2023] [Indexed: 07/10/2023]
Abstract
The grim situation of bacterial infection has undoubtedly become a major threat to human health. In the context of frequent use of antibiotics, a new bactericidal method is urgently needed to fight against drug-resistant bacteria caused by non-standard use of antibiotics. Cold atmospheric plasma (CAP) is composed of a variety of bactericidal species, which has excellent bactericidal effect on microbes. However, the mechanism of interaction between CAP and bacteria is not completely clear. In this paper, we summarize the mechanisms of bacterial killing by CAP in a systematic manner, discuss the responses of bacteria to CAP treatment that are considered to be related to tolerance and their underlying mechanisms, review the recent advances in bactericidal applications of CAP finally. This review indicates that CAP inhibition and tolerance of survival bacteria are a set of closely related mechanisms and suggests that there might be other mechanisms of tolerance to survival bacteria that had not been discovered yet. In conclusion, this review shows that CAP has complex and diverse bactericidal mechanisms, and has excellent bactericidal effect on bacteria at appropriate doses. KEY POINTS: • The bactericidal mechanism of CAP is complex and diverse. • There are few resistant bacteria but tolerant bacteria during CAP treatment. • There is excellent germicidal effect when CAP in combination with other disinfectants.
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Affiliation(s)
- Hao Zhang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Chengxi Zhang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Disease, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Qi Han
- Department of Oral Pathology, State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China.
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17
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Shabani H, Dezhpour A, Jafari S, Moghaddam MJM, Nilkar M. Antimicrobial activity of cold atmospheric-pressure argon plasma combined with chicory (Cichorium intybus L.) extract against P. aeruginosa and E. coli biofilms. Sci Rep 2023; 13:9441. [PMID: 37296178 PMCID: PMC10256777 DOI: 10.1038/s41598-023-35906-x] [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: 04/03/2023] [Accepted: 05/25/2023] [Indexed: 06/12/2023] Open
Abstract
The present study reports a significant combined antibacterial activity of Cichorium intybus L. (known as Chicory) natural extract with cold atmospheric-pressure argon plasma treatment against multi-drug resistant (MDR) Gram-negative bacteria. To detect reactive species that are generated in the argon plasma, optical emission spectra were recorded. The molecular bands were allocated to the hydroxyl radicals (OH) and neutral nitrogen molecules (N2). Moreover, the atomic lines form the emitted spectra were determined to argon atoms (Ar) and the oxygen atoms (O), respectively. The results revealed that Chicory extract treatment at a concentration of 0.043 g/ml reduced the metabolic activity of P. aeruginosa cells by 42%, while, a reduced metabolic activity of 50.6% was found for E. coli biofilms. Moreover, the combination of Chicory extract with 3 min Ar-plasma introduced a synergistic effect, so that it exhibited a significantly reduced metabolic activity of P. aeruginosa to 84.1%, and E. coli ones to 86.7%, respectively. The relationship between cell viability and membrane integrity of P. aeruginosa and E. coli biofilms treated with Chicory extract and argon plasma jet were also analyzed by CLSM. It was found that after the combined treatment, a noticeable membrane disruption was formed. Besides, it was concluded that E. coli biofilms showed a higher sensitivity to Ar-plasma than P. aeruginosa biofilm at longer plasma exposure times. This study suggests that the anti-biofilm therapy based on a combined effect of Chicory extract and cold argon plasma treatment can serve as a considerable green method for treatment of antimicrobial MDR bacteria.
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Affiliation(s)
- H Shabani
- Department of Physics, Faculty of Science, University of Guilan, Rasht, 41335-1914, Iran
| | - A Dezhpour
- Department of Physics, Faculty of Science, University of Guilan, Rasht, 41335-1914, Iran
| | - S Jafari
- Department of Physics, Faculty of Science, University of Guilan, Rasht, 41335-1914, Iran.
| | | | - M Nilkar
- Research Unit Plasma Technology (RUPT), Department of Applied Physics, Faculty of Engineering and Architecture, Ghent University, Sint-Pietersnieuwstraat 41 B4, 9000, Ghent, Belgium
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18
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Mumtaz S, Rana JN, Lim JS, Javed R, Choi EH, Han I. Effect of Plasma On-Time with a Fixed Duty Ratio on Reactive Species in Plasma-Treated Medium and Its Significance in Biological Applications. Int J Mol Sci 2023; 24:ijms24065289. [PMID: 36982365 PMCID: PMC10049170 DOI: 10.3390/ijms24065289] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 02/22/2023] [Accepted: 03/08/2023] [Indexed: 03/12/2023] Open
Abstract
Optimizing the therapeutic range of nonthermal atmospheric pressure plasma (NTAPP) for biomedical applications is an active research topic. For the first time, we examined the effect of plasma on-times in this study while keeping the duty ratio and treatment time fixed. We have evaluated the electrical, optical, and soft jet properties for two different duty ratios of 10% and 36%, using the plasma on-times of 25, 50, 75, and 100 ms. Furthermore, the influence of plasma on-time on reactive oxygen and nitrogen species (ROS/RNS) levels in plasma treated medium (PTM) was also investigated. Following treatment, the characteristics of (DMEM media) and PTM (pH, EC, and ORP) were also examined. While EC and ORP rose by raising plasma on-time, pH remained unchanged. Finally, the PTM was used to observe the cell viability and ATP levels in U87-MG brain cancer cells. We found it interesting that, by increasing the plasma on-time, the levels of ROS/RNS dramatically increased in PTM and significantly affected the viability and ATP levels of the U87-MG cell line. The results of this study provide a significant indication of advancement by introducing the optimization of plasma on-time to increase the efficacy of the soft plasma jet for biomedical applications.
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Affiliation(s)
- Sohail Mumtaz
- Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Republic of Korea; (S.M.); (J.S.L.); (E.H.C.)
- Plasma Bioscience Research Center (PBRC), Applied Plasma Medicine Center, Kwangwoon University, Seoul 01897, Republic of Korea; (J.N.R.); (R.J.)
| | - Juie Nahushkumar Rana
- Plasma Bioscience Research Center (PBRC), Applied Plasma Medicine Center, Kwangwoon University, Seoul 01897, Republic of Korea; (J.N.R.); (R.J.)
- Department of Plasma Bio-Display, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Jun Sup Lim
- Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Republic of Korea; (S.M.); (J.S.L.); (E.H.C.)
- Plasma Bioscience Research Center (PBRC), Applied Plasma Medicine Center, Kwangwoon University, Seoul 01897, Republic of Korea; (J.N.R.); (R.J.)
| | - Rida Javed
- Plasma Bioscience Research Center (PBRC), Applied Plasma Medicine Center, Kwangwoon University, Seoul 01897, Republic of Korea; (J.N.R.); (R.J.)
- Department of Plasma Bio-Display, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Eun Ha Choi
- Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Republic of Korea; (S.M.); (J.S.L.); (E.H.C.)
- Plasma Bioscience Research Center (PBRC), Applied Plasma Medicine Center, Kwangwoon University, Seoul 01897, Republic of Korea; (J.N.R.); (R.J.)
- Department of Plasma Bio-Display, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Ihn Han
- Plasma Bioscience Research Center (PBRC), Applied Plasma Medicine Center, Kwangwoon University, Seoul 01897, Republic of Korea; (J.N.R.); (R.J.)
- Department of Plasma Bio-Display, Kwangwoon University, Seoul 01897, Republic of Korea
- Correspondence: ; Tel.: +82-2-940-5666; Fax: +82-2-940-5664
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19
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Żywicka A, Ciecholewska-Juśko D, Charęza M, Drozd R, Sobolewski P, Junka A, Gorgieva S, El Fray M, Fijałkowski K. Argon plasma-modified bacterial cellulose filters for protection against respiratory pathogens. Carbohydr Polym 2023; 302:120322. [PMID: 36604039 DOI: 10.1016/j.carbpol.2022.120322] [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: 07/14/2022] [Revised: 10/20/2022] [Accepted: 11/06/2022] [Indexed: 11/13/2022]
Abstract
In this work, we present novel, sustainable filters based on bacterial cellulose (BC) functionalized with low-pressure argon plasma (LPP-Ar). The "green" production process involved BC biosynthesis by Komagataeibacter xylinus, followed by simple purification, homogenization, lyophilization, and finally LPP-Ar treatment. The obtained LPP-Ar-functionalized BC-based material (LPP-Ar-BC-bM) showed excellent antimicrobial and antiviral properties against both Gram-positive (S. aureus) and Gram-negative (E. coli) bacteria, and an enveloped bacteriophage phage Φ6, with no cytotoxicity versus murine fibroblasts in vitro. Further, filters consisting of three layers of LPP-Ar-BC-bM had >99 % bacterial and viral filtration efficiency, while maintaining sufficiently low airflow resistance (6 mbar at an airflow of 95 L/min). Finally, as a proof-of-concept, we were able to prepare 80 masks with LPP-Ar-BC-bM filter and ~85 % of volunteer medical staff assessed them as "good" or "very good" in terms of comfort. We conclude that our novel sustainable, biobased, biodegradable filters are suitable for respiratory personal protective equipment (PPE), such as surgical masks and respirators.
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Affiliation(s)
- Anna Żywicka
- Department of Microbiology and Biotechnology, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology in Szczecin, Piastów 45, 70-311 Szczecin, Poland.
| | - Daria Ciecholewska-Juśko
- Department of Microbiology and Biotechnology, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology in Szczecin, Piastów 45, 70-311 Szczecin, Poland.
| | - Magdalena Charęza
- Department of Microbiology and Biotechnology, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology in Szczecin, Piastów 45, 70-311 Szczecin, Poland.
| | - Radosław Drozd
- Department of Microbiology and Biotechnology, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology in Szczecin, Piastów 45, 70-311 Szczecin, Poland.
| | - Peter Sobolewski
- Department of Polymer and Biomaterials Science, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastów 45, 70-311 Szczecin, Poland.
| | - Adam Junka
- Department of Pharmaceutical Microbiology and Parasitology, Faculty of Pharmacy, Wroclaw Medical University, Borowska 211A, 50-556 Wrocław, Poland.
| | - Selestina Gorgieva
- Institute of Engineering Materials and Design, Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia.
| | - Miroslawa El Fray
- Department of Polymer and Biomaterials Science, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastów 45, 70-311 Szczecin, Poland.
| | - Karol Fijałkowski
- Department of Microbiology and Biotechnology, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology in Szczecin, Piastów 45, 70-311 Szczecin, Poland.
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20
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Kaushik NK, Bhartiya P, Kaushik N, Shin Y, Nguyen LN, Park JS, Kim D, Choi EH. Nitric-oxide enriched plasma-activated water inactivates 229E coronavirus and alters antiviral response genes in human lung host cells. Bioact Mater 2023; 19:569-580. [PMID: 35574062 PMCID: PMC9080223 DOI: 10.1016/j.bioactmat.2022.05.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 04/20/2022] [Accepted: 05/03/2022] [Indexed: 12/18/2022] Open
Abstract
The ongoing pandemic caused by the novel coronavirus, SARS-CoV-2, is influencing global health. Moreover, there is a major threat of future coronaviruses affecting the entire world in a similar, or even more dreadful, manner. Therefore, effective and biocompatible therapeutic options against coronaviruses are urgently needed. To address this challenge, medical specialists require a well-informed and safe approach to treating human coronaviruses (HCoVs). Herein, an environmental friendly approach for viral inactivation, based on plasma technology, was considered. A microwave plasma system was employed for the generation of the high amount of gaseous nitric oxide to prepare nitric oxide enriched plasma-activated water (NO-PAW), the effects of which on coronaviruses, have not been reported to date. To determine these effects, alpha-HCoV-229E was used in an experimental model. We found that NO-PAW treatment effectively inhibited coronavirus infection in host lung cells, visualized by evaluating the cytopathic effect and expression level of spike proteins. Interestingly, NO-PAW showed minimal toxicity towards lung host cells, suggesting its potential for therapeutic application. Moreover, this new approach resulted in viral inactivation and greatly improved the gene levels involved in host antiviral responses. Together, our findings provide evidence of an initiation point for further progress toward the clinical development of antiviral treatments, including such coronaviruses.
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Affiliation(s)
- Nagendra Kumar Kaushik
- Department of Electrical and Biological Physics, Plasma Bioscience Research Center, Kwangwoon University, Seoul, 01897, Republic of Korea
| | - Pradeep Bhartiya
- Department of Electrical and Biological Physics, Plasma Bioscience Research Center, Kwangwoon University, Seoul, 01897, Republic of Korea
| | - Neha Kaushik
- Department of Biotechnology, College of Engineering, The University of Suwon, Hwaseong-si, 18323, Republic of Korea
| | - Yungoh Shin
- Department of Electrical and Biological Physics, Plasma Bioscience Research Center, Kwangwoon University, Seoul, 01897, Republic of Korea
| | - Linh Nhat Nguyen
- Department of Electrical and Biological Physics, Plasma Bioscience Research Center, Kwangwoon University, Seoul, 01897, Republic of Korea
| | - Jang Sick Park
- Department of Electrical and Biological Physics, Plasma Bioscience Research Center, Kwangwoon University, Seoul, 01897, Republic of Korea
| | - Doyoung Kim
- Department of Electrical and Biological Physics, Plasma Bioscience Research Center, Kwangwoon University, Seoul, 01897, Republic of Korea
| | - Eun Ha Choi
- Department of Electrical and Biological Physics, Plasma Bioscience Research Center, Kwangwoon University, Seoul, 01897, Republic of Korea
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21
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Kim N, Lee S, Lee S, Kang J, Choi Y, Park J, Park C, Khang D, Kim S. Portable Cold Atmospheric Plasma Patch-Mediated Skin Anti-Inflammatory Therapy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2202800. [PMID: 36180414 PMCID: PMC9731685 DOI: 10.1002/advs.202202800] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 08/27/2022] [Indexed: 05/29/2023]
Abstract
Although plasma is a promising technology in various fields, its clinical application is restricted by several limitations. A cold atmospheric plasma (CAP) patch is fabricated to help overcome hurdles, especially when treating skin diseases. This patch has surface dielectric barrier discharge, which generates reactive oxygen species (ROS) and reactive nitrogen species (RNS) on a flexible polymer film surface on which the embedded electrode induces a locally strong electric field. The effect of the CAP patch on psoriasis is also evaluated. The distinct characteristics of psoriasis between the lesion and non-lesion area allow the CAP patch to be suitable for only lesion area for its treatment. The CAP patch induces the opening of calcium channels in keratinocytes, thereby restoring abnormal keratinocyte differentiation and the collapse of the tight junction; thus, alleviating psoriatic symptoms. In addition, the favorable effect is due to the induction of ROS/RNS by the CAP patch, not the electric field generated during plasma generation. The findings indicate that the proposed portable CAP patch can help treat inflammatory skin disorders, especially psoriasis. As this can be used easily as a combination therapy with existing drugs, it may help reduce side effects caused by existing drugs.
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Affiliation(s)
- Namkyung Kim
- Cell & Matrix Research InstituteDepartment of PharmacologySchool of MedicineKyungpook National UniversityDaegu41944South Korea
| | - Seunghun Lee
- Department of Nano‐Bio ConvergenceNano Surface Materials DivisionKorea Institute of Materials ScienceChangwon51508South Korea
| | - Soyoung Lee
- Immunoregulatory Materials Research CenterKorea Research Institute of Bioscience and BiotechnologyJeongeup56212South Korea
| | - Jinjoo Kang
- Cell & Matrix Research InstituteDepartment of PharmacologySchool of MedicineKyungpook National UniversityDaegu41944South Korea
| | - Young‐Ae Choi
- Cell & Matrix Research InstituteDepartment of PharmacologySchool of MedicineKyungpook National UniversityDaegu41944South Korea
| | - Jeongsu Park
- Department of PhysiologySchool of MedicineGachon UniversityIncheon21999South Korea
| | - Chul‐Kyu Park
- Department of PhysiologySchool of MedicineGachon UniversityIncheon21999South Korea
| | - Dongwoo Khang
- Department of PhysiologySchool of MedicineGachon UniversityIncheon21999South Korea
| | - Sang‐Hyun Kim
- Cell & Matrix Research InstituteDepartment of PharmacologySchool of MedicineKyungpook National UniversityDaegu41944South Korea
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22
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Assessment of the Effect of Cold Atmospheric Plasma (CAP) on the Hairtail ( Trichiurus lepturus) Quality under Cold Storage Conditions. Foods 2022; 11:foods11223683. [PMID: 36429278 PMCID: PMC9689270 DOI: 10.3390/foods11223683] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/10/2022] [Accepted: 11/13/2022] [Indexed: 11/19/2022] Open
Abstract
Cold Atmospheric Plasma (CAP) is a novel non-thermal preservation method that extends the shelf-life of food. Therefore, this study investigated the effect of CAP on the quality parameters of hairtail (Trichiurus lepturus) during cold storage conditions (at 4 °C and RH range 45−55%). For that reason, different quality parameters including the total bacteria count (TBC), total volatile basic nitrogen (TVB-N), pH, thiobarbituric acid reacting substances value (TBARS), color, texture, and sensory evaluation have been measured. The hairtail was exposed to CAP at 50 kV voltage for 2, 3, 4, and 5 min. The results showed that the samples treated with CAP at 50 kV for 5 min had significantly lower (p < 0.05) TBC (7.04 ± 0.26 log CFU/g) compared with the control sample (8.69 ± 0.06 log CFU/g). Similar results were found concerning TVB-N, which strongly decreased in the treated samples (16.63 ± 0.03 mg N/100 g) in comparison with the control sample (22.79 ± 0.03 mg N/100 g). In addition, the CAP-treated samples had lower (p < 0.05) changes in color than those of the control group. With reference to the sensory evaluation, the shelf-life of CAP-treated samples (at 50 kV for 5 min) was longer than the untreated samples by about 6 days. These results led us to the conclusion that CAP can effectively delay spoilage and deterioration, slow the rise in pH, and maintain the sensory attributes of hairtail during cold storage conditions.
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Panariello BHD, Mody DP, Eckert GJ, Witek L, Coelho PG, Duarte S. Low-Temperature Plasma Short Exposure to Decontaminate Peri-Implantitis-Related Multispecies Biofilms on Titanium Surfaces In Vitro. BIOMED RESEARCH INTERNATIONAL 2022; 2022:1549774. [PMID: 37228507 PMCID: PMC10205409 DOI: 10.1155/2022/1549774] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 09/29/2022] [Indexed: 03/10/2024]
Abstract
BACKGROUND The use of low-temperature plasma (LTP) is a novel approach to treating peri-implantitis. LTP disrupts the biofilm while conditioning the surrounding host environment for bone growth around the infected implant. The main objective of this study was to evaluate the antimicrobial properties of LTP on newly formed (24 h), intermediate (3 days), and mature (7 days) peri-implant-related biofilms formed on titanium surfaces. METHODS Actinomyces naeslundii (ATCC 12104), Porphyromonas gingivalis (W83), Streptococcus oralis (ATCC 35037), and Veillonella dispar (ATCC 17748) were cultivated in brain heart infusion supplemented with 1% yeast extract, hemin (0.5 mg/mL), and menadione (5 mg/mL) and kept at 37°C in anaerobic conditions for 24 h. Species were mixed for a final concentration of ~105 colony forming units (CFU)/mL (OD = 0.01), and the bacterial suspension was put in contact with titanium specimens (7.5 mm in diameter by 2 mm in thickness) for biofilm formation. Biofilms were treated with LTP for 1, 3, and 5 min at 3 or 10 mm from plasma tip to sample. Controls were those having no treatment (negative control, NC) and argon flow under the same LTP conditions. Positive controls were those treated with 14 μg/mL amoxicillin and 140 μg/mL metronidazole individually or combined and 0.12% chlorhexidine (n = 6 per group). Biofilms were evaluated by CFU, confocal laser scanning microscopy (CLSM), and fluorescence in situ hybridization (FISH). Comparisons among bacteria; 24 h, 3-day, and 7-day biofilms; and treatments for each biofilm were made. Wilcoxon signed-rank and Wilcoxon rank sum tests were applied (α = 0.05). RESULTS Bacterial growth was observed in all NC groups, corroborated by FISH. LTP treatment significantly reduced all bacteria species compared to the NC in all biofilm periods and treatment conditions (p ≤ 0.016), and CLSM corroborated these results. CONCLUSION Within the limitation of this study, we conclude that LTP application effectively reduces peri-implantitis-related multispecies biofilms on titanium surfaces in vitro.
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Affiliation(s)
| | - Drashty P. Mody
- Department of Cariology, Operative Dentistry and Dental Public Health Indianapolis, Indianapolis, IN, USA
| | - George J. Eckert
- Department of Biostatistics and Health Data Science, Indiana University School of Medicine, IN, USA
| | - Lukasz Witek
- Department of Biomaterials, New York University College of Dentistry, New York, NY, USA
| | - Paulo G. Coelho
- Department of Biomaterials, New York University College of Dentistry, New York, NY, USA
| | - Simone Duarte
- American Dental Association Science and Research Institute, Chicago, IL, USA
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Cold Atmospheric Plasma Jet Treatment Improves Human Keratinocyte Migration and Wound Closure Capacity without Causing Cellular Oxidative Stress. Int J Mol Sci 2022; 23:ijms231810650. [PMID: 36142561 PMCID: PMC9504313 DOI: 10.3390/ijms231810650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 09/08/2022] [Accepted: 09/09/2022] [Indexed: 11/17/2022] Open
Abstract
Cold Atmospheric Plasma (CAP) is an emerging technology with great potential for biomedical applications such as sterilizing equipment and antitumor strategies. CAP has also been shown to improve skin wound healing in vivo, but the biological mechanisms involved are not well known. Our study assessed a possible effect of a direct helium jet CAP treatment on keratinocytes, in both the immortalized N/TERT-1 human cell line and primary keratinocytes obtained from human skin samples. The cells were covered with 200 µL of phosphate buffered saline and exposed to the helium plasma jet for 10−120 s. In our experimental conditions, micromolar concentrations of hydrogen peroxide, nitrite and nitrate were produced. We showed that long-time CAP treatments (≥60 s) were cytotoxic, reduced keratinocyte migration, upregulated the expression of heat shock protein 27 (HSP27) and induced oxidative cell stress. In contrast, short-term CAP treatments (<60 s) were not cytotoxic, did not affect keratinocyte proliferation and differentiation, and did not induce any changes in mitochondria, but they did accelerate wound closure in vitro by improving keratinocyte migration. In conclusion, these results suggest that helium-based CAP treatments improve wound healing by stimulating keratinocyte migration. The study confirms that CAP could be a novel therapeutic method to treat recalcitrant wounds.
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Roy A, Banerjee A, Das SC, Vaid A, Katiyal S, Majumdar A. Tolerance effect of a shock-free atmospheric plasma on human skin. APPLIED PHYSICS. A, MATERIALS SCIENCE & PROCESSING 2022; 128:866. [PMID: 36101661 PMCID: PMC9454411 DOI: 10.1007/s00339-022-06022-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023]
Abstract
UNLABELLED In this work, a shock-free argon-fed plasma plume was generated by a variable-frequency power supply and the discharge characteristics were investigated from the voltage and current waveforms between 72 and 92 kHz frequencies. The higher electron temperature dominates the plasma chemical process and the average plasma temperature is about 30 ℃ under these conditions. The influence of non-thermal atmospheric plasma plume length and plume temperature on Ar gas flow is optimized at 7 sL/min. The average charge accumulation on the plume tip area and the dependence of flow rate on the plasma irradiation area were also explored. This atmospheric pressure plasma jet (APPJ) has been proposed for human-skin irradiation on different areas (even on the tongue) owing to its less painful, tingling and burning effect. Optical emission spectroscopy (OES) confirmed the presence of excited argon with reactive nitrogen (RNS) and oxygen species (ROS). This study contributes to a better understanding of non-thermal plasma effects on the human body which may find prospects for disinfection and prevention of different diseases during the current pandemic time. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s00339-022-06022-w.
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Affiliation(s)
- Avishek Roy
- Department of Electronics, Vidyasagar College, 39 Sankar Ghosh Lane, Kolkata, 700006 India
| | - Arindam Banerjee
- Department of Physics, Indian Institute of Engineering Science and Technology, Shibpur, 711103 India
| | | | - Akshay Vaid
- FCIPT Division, Institute for Plasma Research, A10-B, GIDC, Gandhinagar, 382044 India
| | - Sumant Katiyal
- School of Electronics, Devi Ahilya Vishwavidyalaya, Indore, 452001 India
| | - Abhijit Majumdar
- Department of Physics, Indian Institute of Engineering Science and Technology, Shibpur, 711103 India
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26
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Dandapani H, Kankaanpää P, Jones PR, Kallio P. A Plasmid-Based Fluorescence Reporter System for Monitoring Oxidative Damage in E. coli. SENSORS (BASEL, SWITZERLAND) 2022; 22:6334. [PMID: 36080791 PMCID: PMC9459809 DOI: 10.3390/s22176334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/11/2022] [Accepted: 08/17/2022] [Indexed: 06/15/2023]
Abstract
Quantitating intracellular oxidative damage caused by reactive oxygen species (ROS) is of interest in many fields of biological research. The current systems primarily rely on supplemented oxygen-sensitive substrates that penetrate the target cells, and react with ROS to produce signals that can be monitored with spectroscopic or imaging techniques. The objective here was to design a new non-invasive analytical strategy for measuring ROS-induced damage inside living cells by taking advantage of the native redox sensor system of E. coli. The developed plasmid-based sensor relies on an oxygen-sensitive transcriptional repressor IscR that controls the expression of a fluorescent marker in vivo. The system was shown to quantitatively respond to oxidative stress induced by supplemented H2O2 and lowered cultivation temperatures. Comparative analysis with fluorescence microscopy further demonstrated that the specificity of the reporter system was equivalent to the commercial chemical probe (CellROX). The strategy introduced here is not dependent on chemical probes, but instead uses a fluorescent expression system to detect enzyme-level oxidative damage in microbial cells. This provides a cheap and simple means for analysing enzyme-level oxidative damage in a biological context in E. coli.
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Affiliation(s)
- Hariharan Dandapani
- Molecular Plant Biology, Department of Life Technologies, University of Turku, FI-20014 Turku, Finland
| | - Pasi Kankaanpää
- Turku BioImaging and Turku Bioscience Centre, University of Turku, FI-20014 Turku, Finland
- Turku BioImaging and Turku Bioscience Centre, Åbo Akademi University, FI-20500 Turku, Finland
| | - Patrik R. Jones
- Molecular Plant Biology, Department of Life Technologies, University of Turku, FI-20014 Turku, Finland
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London SW7 2BX, UK
| | - Pauli Kallio
- Molecular Plant Biology, Department of Life Technologies, University of Turku, FI-20014 Turku, Finland
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27
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Jiang G, Ma J, Wang C, Wang Y, Laghari AA. Kinetics and mechanism analysis on self-decay of airborne bacteria:biological and physical decay under different temperature. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 832:155033. [PMID: 35390386 DOI: 10.1016/j.scitotenv.2022.155033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 03/24/2022] [Accepted: 03/31/2022] [Indexed: 05/13/2023]
Abstract
Bioaerosol as an important medium has aroused widespread concern on its potential hazards in disease transmission and environment biosafety. However, little is known about the duration and self-decay of airborne bacteria in the atmosphere environment. Further, the self-decay process is proposed to include biological-decay and physical-decay. At present, there are many reports on the bacteria apoptosis mechanism and airborne particle migration. However, few studies focus on self-decay during the physical movement of airborne bacteria. The present study investigated self-decay laws and efficiencies of airborne bacteria in the sealed reactor under room temperature (18 ± 2 °C, RT) and low temperature (3 ± 2 °C, LT). The self-decay rate constants of 0.0089, 0.0133, 0.0092, and 0.0122 min-1 were obtained under RT-E. coli, LT-E. coli, RT-S. aureus and LT-S. aureus, respectively. There was no significant difference between the self-decay efficiency of gram-negative and gram-positive bacteria under the same conditions. Nevertheless, gram-negative bacteria were more sensitive to temperature change compared with gram-positive bacteria, where the self-decay efficiency of gram-negative under LT was 49% higher than that under RT, and the value of gram-positive was 32% at the same condition. Furthermore, the laws of biological-decay and physical-decay conformed to the first-order kinetic model by theoretical derivation. Biological-decay accounted for 59.5% at RT and 88.5% at LT among self-decay, which is mainly caused by energy absorption, environmental stress, and bacterial structure changes. Physical-decay mainly caused by gravity settlement accounting for 40% at RT and 10% at LT among self-decay, approximately. Meanwhile, the influence of environmental factors on self-decay was mainly reflected in the biological-decay process. Overall, it is of great significance for clarifying the changing laws of bioaerosol and controlling the transmission of airborne bacteria.
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Affiliation(s)
- Guanyu Jiang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, PR China; Tianjin Key Lab of Indoor Air Environmental Quality Control, Tianjin 300350, PR China
| | - Jinbiao Ma
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, PR China; Tianjin Key Lab of Indoor Air Environmental Quality Control, Tianjin 300350, PR China
| | - Can Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, PR China; Tianjin Key Lab of Indoor Air Environmental Quality Control, Tianjin 300350, PR China.
| | - Yongchao Wang
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, PR China; Tianjin Key Lab of Indoor Air Environmental Quality Control, Tianjin 300350, PR China
| | - Azhar Ali Laghari
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, PR China; Tianjin Key Lab of Indoor Air Environmental Quality Control, Tianjin 300350, PR China
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28
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Human Trial for the Effect of Plasma-Activated Water Spray on Vaginal Cleaning in Patients with Bacterial Vaginosis. Med Sci (Basel) 2022; 10:medsci10020033. [PMID: 35736353 PMCID: PMC9227462 DOI: 10.3390/medsci10020033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 05/03/2022] [Accepted: 06/16/2022] [Indexed: 11/18/2022] Open
Abstract
Underwater plasma discharge temporally produces several reactive radicals and/or free chlorine molecules in water, which is responsible for antimicrobial activity. Hence, it can simply sanitize tap water without disinfectant treatment. Additionally, the spraying technique using cleaning water exploits deep application in the narrow and curved vaginal tract of patients. Herein, we attempted a clinical trial to evaluate the vaginal cleaning effect of spraying plasma-activated water (PAW) to patients with vaginitis (46 patients). The efficacy was compared with treatment with betadine antiseptics used to treat bacterial vaginosis (40 patients). To evaluate the cleaning effect, Gram staining of the vaginal secretions was conducted before and after spraying PAW or betadine treatment (BT). Consequently, PAW-sprayed (PAWS) patients (22.3%) showed a better vaginal cleaning effect against Gram-positive and -negative bacteria than BT patients (14.4%). Moreover, 18 patients in the BT group showed worsened vaginal contamination, whereas five patients in the PAWS group showed worsened vaginal contamination. Taken together, the noncontact method of spraying cleaning water to the vagina exhibited a reliable vaginal cleaning effect without further bacterial infection compared with BT. Therefore, we suggest a clinical application of the spraying method using PAW for vaginal cleaning to patients with vaginitis without disinfectants and antibiotics.
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29
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Baek KH, Jang D, Kim T, Park JY, Kim D, Ryoo S, Lee S. Instant inactivation of aerosolized SARS-CoV-2 by dielectric filter discharge. PLoS One 2022; 17:e0268049. [PMID: 35587941 PMCID: PMC9119459 DOI: 10.1371/journal.pone.0268049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 04/15/2022] [Indexed: 01/02/2023] Open
Abstract
This study aimed to evaluate the instant inactivation effect of dielectric filter discharge (DFD) on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) aerosols. The filter consisted of one layer of ZrO2 beads covered by aluminum mesh electrodes; this porous structure of DFD part generates filter-type surface discharge and reactive oxygen species. In a closed cylindrical chamber, DFD treated air flow containing SARS-CoV-2 aerosols, primarily composed of particle diameters of ≤ 1 μm. A polypropylene melt-blown filter collected the treated bioaerosols for inactivation analysis. Plaque and polymerase chain reaction assays showed that the aerosolized SARS-CoV-2 that passed through the filter were more than 99.84% inactivated with degradation of SARS-CoV-2 genes (ORF1ab and E). However, ozone exposure without DFD passage was not found to be effective for bioaerosol inactivation in plaque assay.
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Affiliation(s)
- Ki Ho Baek
- Department of Nano-Bio Convergence, Korea Institute of Materials Science, Changwon, Republic of Korea
| | - Donghwan Jang
- Clinical Research Centre, Masan National Tuberculosis Hospital, Changwon, Republic of Korea
| | - Taeyoon Kim
- Clinical Research Centre, Masan National Tuberculosis Hospital, Changwon, Republic of Korea
| | - Joo Young Park
- Department of Nano-Bio Convergence, Korea Institute of Materials Science, Changwon, Republic of Korea
| | - Dojoon Kim
- Purunbit, Siheung-si, Gyeonggi-do, Republic of Korea
| | - Sungweon Ryoo
- Clinical Research Centre, Masan National Tuberculosis Hospital, Changwon, Republic of Korea
| | - Seunghun Lee
- Department of Nano-Bio Convergence, Korea Institute of Materials Science, Changwon, Republic of Korea
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30
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Qin H, Qiu H, He ST, Hong B, Liu K, Lou F, Li M, Hu P, Kong X, Song Y, Liu Y, Pu M, Han P, Li M, An X, Song L, Tong Y, Fan H, Wang R. Efficient disinfection of SARS-CoV-2-like coronavirus, pseudotyped SARS-CoV-2 and other coronaviruses using cold plasma induces spike protein damage. JOURNAL OF HAZARDOUS MATERIALS 2022; 430:128414. [PMID: 35149493 PMCID: PMC8813208 DOI: 10.1016/j.jhazmat.2022.128414] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Revised: 01/19/2022] [Accepted: 01/31/2022] [Indexed: 05/05/2023]
Abstract
Coronavirus disease 2019 (COVID-19) has become a worldwide public health emergency, and the high transmission of SARS-CoV-2 variants has raised serious concerns. Efficient disinfection methods are crucial for the prevention of viral transmission. Herein, pulse power-driven cold atmospheric plasma (CAP), a novel sterilization strategy, was found to potently inactivate SARS-CoV-2-like coronavirus GX_P2V, six strains of major epidemic SARS-CoV-2 variants and even swine coronavirus PEDV and SADS-CoV within 300 s (with inhibition rate more than 99%). We identified four dominant short-lived reactive species, ONOO-, 1O2, O2- and·OH, generated in response to CAP and distinguished their roles in the inactivation of GX_P2V and SARS-CoV-2 spike protein receptor binding domain (RBD), which is responsible for recognition and binding to human angiotensin-converting enzyme 2 (hACE2). Our study provides detailed evidence of a novel surface disinfection strategy for SARS-CoV-2 and other coronaviruses.
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Affiliation(s)
- Hongbo Qin
- College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China; College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Hengju Qiu
- College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Shi-Ting He
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Bixia Hong
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Ke Liu
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Fuxing Lou
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Maochen Li
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Pan Hu
- College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xianghao Kong
- College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yujie Song
- College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yuchen Liu
- College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Mingfang Pu
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Pengjun Han
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Mengzhe Li
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Xiaoping An
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Lihua Song
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yigang Tong
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China; Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Huahao Fan
- College of Life Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Ruixue Wang
- College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
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Hiengrach P, Visitchanakun P, Tongchairawewat P, Tangsirisatian P, Jungteerapanich T, Ritprajak P, Wannigama DL, Tangtanatakul P, Leelahavanichkul A. Sepsis Encephalopathy Is Partly Mediated by miR370-3p-Induced Mitochondrial Injury but Attenuated by BAM15 in Cecal Ligation and Puncture Sepsis Male Mice. Int J Mol Sci 2022; 23:ijms23105445. [PMID: 35628259 PMCID: PMC9141734 DOI: 10.3390/ijms23105445] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 05/06/2022] [Accepted: 05/10/2022] [Indexed: 02/06/2023] Open
Abstract
BAM15 (a mitochondrial uncoupling agent) was tested on cecal ligation and puncture (CLP) sepsis mice with in vitro experiments. BAM15 attenuated sepsis as indicated by survival, organ histology (kidneys and livers), spleen apoptosis (activated caspase 3), brain injury (SHIRPA score, serum s100β, serum miR370-3p, brain miR370-3p, brain TNF-α, and apoptosis), systemic inflammation (cytokines, cell-free DNA, endotoxemia, and bacteremia), and blood-brain barrier (BBB) damage (Evan's blue dye and the presence of green fluorescent E. coli in brain after an oral administration). In parallel, brain miR arrays demonstrated miR370-3p at 24 h but not 120 h post-CLP, which was correlated with metabolic pathways. Either lipopolysaccharide (LPS) or TNF-α upregulated miR370-3p in PC12 (neuron cells). An activation by sepsis factors (LPS, TNF-α, or miR370-3p transfection) damaged mitochondria (fluorescent color staining) and reduced cell ATP, possibly through profound mitochondrial activity (extracellular flux analysis) that was attenuated by BAM15. In bone-marrow-derived macrophages, LPS caused mitochondrial injury, decreased cell ATP, enhanced glycolysis activity (extracellular flux analysis), and induced pro-inflammatory macrophages (iNOS and IL-1β) which were neutralized by BAM15. In conclusion, BAM15 attenuated sepsis through decreased mitochondrial damage, reduced neuronal miR370-3p upregulation, and induced anti-inflammatory macrophages. BAM15 is proposed to be used as an adjuvant therapy against sepsis hyperinflammation.
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Affiliation(s)
- Pratsanee Hiengrach
- Center of Excellence on Translational Research in Inflammation and Immunology (CETRII), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (P.H.); (P.V.)
| | - Peerapat Visitchanakun
- Center of Excellence on Translational Research in Inflammation and Immunology (CETRII), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (P.H.); (P.V.)
| | - Pakteema Tongchairawewat
- Chulalongkorn University International Medical Program, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand; (P.T.); (P.T.); (T.J.)
| | - Ponphisudti Tangsirisatian
- Chulalongkorn University International Medical Program, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand; (P.T.); (P.T.); (T.J.)
| | - Thitiphat Jungteerapanich
- Chulalongkorn University International Medical Program, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand; (P.T.); (P.T.); (T.J.)
| | - Patcharee Ritprajak
- Research Unit in Integrative Immuno-Microbial Biochemistry and Bioresponsive Nanomaterials, Department of Microbiology, Faculty of Dentistry, Chulalongkorn University, Bangkok 10330, Thailand;
| | - Dhammika Leshan Wannigama
- Antimicrobial Resistance and Stewardship Research Unit, Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand;
- School of Medicine, Faculty of Health and Medical Sciences, The University of Western Australia, Nedlands, WA 6009, Australia
| | - Pattarin Tangtanatakul
- Department of Transfusion Medicine and Clinical Microbiology, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok 10330, Thailand
- Center of Excellence in Immunology and Immune-Mediated Disease, Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand
- Correspondence: (P.T.); (A.L.); Tel.: +66-2256-4132 (A.L.); Fax: +66-2252-5952 (A.L.)
| | - Asada Leelahavanichkul
- Center of Excellence on Translational Research in Inflammation and Immunology (CETRII), Department of Microbiology, Chulalongkorn University, Bangkok 10330, Thailand; (P.H.); (P.V.)
- Nephrology Unit, Department of Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand
- Correspondence: (P.T.); (A.L.); Tel.: +66-2256-4132 (A.L.); Fax: +66-2252-5952 (A.L.)
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No-ozone cold plasma can kill oral pathogenic microbes in H 2O 2-dependent and independent manner. Sci Rep 2022; 12:7597. [PMID: 35534525 PMCID: PMC9085805 DOI: 10.1038/s41598-022-11665-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 04/25/2022] [Indexed: 01/05/2023] Open
Abstract
To apply the sterilisation effect of low-temperature plasma to the oral cavity, the issue of ozone from plasma must be addressed. In this study, a new technology for generating cold plasma with almost no ozone is developed and is named Nozone (no-ozone) Cold Plasma (NCP) technology. The antimicrobial efficacy of the NCP against four oral pathogens is tested, and its specific mechanism is elucidated. The treatment of NCP on oral pathogenic microbes on a solid medium generated a growth inhibition zone. When NCP is applied to oral pathogens in a liquid medium, the growth of microbes decreased by more than 105 colony forming units, and the bactericidal effect of NCP remained after the installation of dental tips. The bactericidal effect of NCP in the liquid medium is due to the increase in hydrogen peroxide levels in the medium. However, the bactericidal effect of NCP in the solid medium depends on the charged elements of the NCP. Furthermore, the surface bactericidal efficiency of the dental-tip-installed NCP is proportional to the pore size of the tips and inversely proportional to the length of the tips. Overall, we expect this NCP device to be widely used in dentistry in the near future.
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Lee HR, Lee YS, You YS, Huh JY, Kim K, Hong YC, Kim CH. Antimicrobial effects of microwave plasma-activated water with skin protective effect for novel disinfectants in pandemic era. Sci Rep 2022; 12:5968. [PMID: 35396389 PMCID: PMC8992786 DOI: 10.1038/s41598-022-10009-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Accepted: 02/21/2022] [Indexed: 12/19/2022] Open
Abstract
Skin antiseptics have important implications for public health and medicine. Although conventional antiseptics have considerable antimicrobial activity, skin toxicity and the development of resistance are common problems. Plasma-treated water has sterilization and tissue-regenerative effects. Therefore, the aim of this study was to identify whether plasma-activated water (PAW) manufactured by our microwave plasma system can be used as a novel antiseptic solution for skin protection. PAW was produced by dissolving reactive nitrogen oxide gas using microwave plasma in deionized water. The antibacterial effects of PAW against Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Bacillus cereus, and Salmonella typhimurium and effective concentrations were investigated by a solid agar plate assay. The factors mediating the effects of PAW were evaluated by the addition of reactive species scavengers. Cytotoxicity and cell viability assays were performed to examine the protective effect of PAW on normal skin cells. PAW exhibited excellent sterilization and no toxicity in normal skin cells. Experiments also confirmed the potential of PAW as a sanitizer for SARS-CoV-2. Our findings support the use of PAW as an effective skin disinfectant with good safety in the current situation of a global pandemic.
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Affiliation(s)
- Hye Ran Lee
- Department of Otolaryngology-Head and Neck Surgery, Catholic Kwandong University International St. Mary's Hospital, Incheon, 22711, Republic of Korea
| | - Yun Sang Lee
- Department of Otolaryngology, School of Medicine, Ajou University, 164 World-Cup Street, Yeongtong-gu, Suwon, 16499, Republic of Korea
| | - Young Suk You
- Plarit Co., Ltd., 443 Samnye-ro Samnye-eup, Wanju-gun, Jeollabuk-do, 565-701, Republic of Korea
| | - Jin Young Huh
- ICD Co., Ltd., 274 Manse-ro, Daedeok-myeon, Anseong-si, Gyeonggi-do, 17542, Republic of Korea
| | - Kangil Kim
- Institute of Plasma Technology, Korea Institute of Fusion Energy, 814-2 Ohsikdo-dong, Gunsan, 573-540, Republic of Korea
| | - Yong Cheol Hong
- Division of Applied Technology Research, National Fusion Research Institute, 113 Gwahangno, Yuseong-gu, Daejeon, 305-333, Republic of Korea
| | - Chul-Ho Kim
- Department of Otolaryngology, School of Medicine, Ajou University, 164 World-Cup Street, Yeongtong-gu, Suwon, 16499, Republic of Korea.
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Experimental Study of a Nonthermal DBD-Driven Plasma Jet System Using Different Supply Methods. PLASMA 2022. [DOI: 10.3390/plasma5010007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This article presents an experimental study of a DBD-driven plasma jet system. The aim of the study is to design a whole system (the jet reactor, its electrical power supply, and a gas-feeding apparatus) suitable for biomedical applications. The article describes the test bench developed for this purpose and discusses the parameters it controls. The measurements show that the studied solutions can be used to control critical parameters such as the jet temperature and dimensions. The best results were obtained for a bipolar short-pulse voltage power supply in the 10–20 kHz frequency range and for a series resonant inverter current power supply operated in “burst mode”, allowing low-frequency modulation.
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Dubey SK, Parab S, Alexander A, Agrawal M, Achalla VPK, Pal UN, Pandey MM, Kesharwani P. Cold atmospheric plasma therapy in wound healing. Process Biochem 2022. [DOI: 10.1016/j.procbio.2021.11.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Fabrication of Novel Chitosan–Hydroxyapatite Nanostructured Thin Films for Biomedical Applications. COATINGS 2021. [DOI: 10.3390/coatings11121561] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In this study, we develop chitosan–hydroxyapatite (CS–HAp) composite layers that were deposited on Si substrates in radio frequency (RF) magnetron sputtering discharge in argon gas. The composition and structure of CS–HAp composite layers were investigated by analytical techniques, such as Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), metallographic microscopy (MM), and atomic force microscopy (AFM). On the other hand, in the present study the second order derivative of FT-IR–ATR spectra, for compositional analyses of CS–HAp, were used. The SEM, MM, and AFM data have shown the formation of CS–HAp composite layers. The surface of CS–HAp composite layers showed uniform growth (at an Ar gas working pressure of p = 2 × 10−3 mbar). The surface of the CS–HAp composites coatings became more nanostructured, becoming granular as the gas pressure increased from 5 × 10−3 to 1.2 × 10−2 mbar. However, our studies revealed that the surface morphology of the CS–HAp composite layers varies with the Ar gas working pressure. At the same time, optical properties are slightly influenced by Ar pressure. Their unique physicochemical properties make them suitable for various applications in the biomedical field, if we consider the already proven antimicrobial properties of chitosan. The antifungal properties and the capacity of the CS–HAp composite layers to inhibit the development of fungal biofilms were also demonstrated using the Candida albicans ATCC 10231 (C. albicans) fungal strain.
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Gouarderes S, Marches A, Vicendo P, Fourquaux I, Simon M, Merbahi N, Gibot L. Cold helium plasma jet does not stimulate collagen remodeling in a 3D human dermal substitute. Bioelectrochemistry 2021; 143:107985. [PMID: 34735915 DOI: 10.1016/j.bioelechem.2021.107985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 10/03/2021] [Accepted: 10/18/2021] [Indexed: 11/16/2022]
Abstract
Cold Atmospheric Plasma (CAP) is an emerging physical approach displaying encouraging antitumor and wound healing effects both in vitro and in vivo. In this study, we assessed the potential of direct CAP to remodel skin collagens using an original tissue-engineered human dermal substitute model rich in endogenous extracellular matrix (ECM) covered with 600 µl of culture medium and treated with CAP for 30 and 120 s. Our results indicated that Reactive Oxygen and Nitrogen Species (RONS) such as H2O2, NO3- and NO2- were produced in the medium during treatment. It appeared that in the CAP-treated dermal substitutes 1) cell viability was not altered, 2) pro-collagen I secretion was not modified over 48 h of culture after treatment, 3) global activity of matrix metalloproteinases MMPs was not modulated over 48 h after treatment, and 4) no change in hydroxyproline content was observed over 5 days after treatment. In order to confirm the efficiency of our device, we showed that the plasma-activated culture medium induced cell apoptosis and growth delay using a 3D human tumor spheroid model. In conclusion, no effect of direct CAP treatment was monitored on dermal ECM production and degradation, indicating that CAP does not stimulate collagen remodeling at the tissue scale.
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Affiliation(s)
- Sara Gouarderes
- Laboratoire des IMRCP, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France
| | - Aurélie Marches
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), Toulouse University, CNRS, Inserm, Toulouse III - Paul Sabatier University, Toulouse, France; Laplace UMR CNRS 5213, Université Toulouse III - Paul Sabatier, France
| | - Patricia Vicendo
- Laboratoire des IMRCP, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France
| | - Isabelle Fourquaux
- Centre de Microscopie Électronique Appliquée à la Biologie, CMEAB, 133 route de Narbonne, 31062 Toulouse, France
| | - Michel Simon
- Toulouse Institute for Infectious and Inflammatory Diseases (Infinity), Toulouse University, CNRS, Inserm, Toulouse III - Paul Sabatier University, Toulouse, France
| | - Nofel Merbahi
- Laplace UMR CNRS 5213, Université Toulouse III - Paul Sabatier, France.
| | - Laure Gibot
- Laboratoire des IMRCP, CNRS UMR 5623, Université Toulouse III - Paul Sabatier, France.
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38
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Combination of vaporized ethyl pyruvate and non-thermal atmospheric pressure plasma for the inactivation of bacteria on lettuce surfaces. INNOV FOOD SCI EMERG 2021. [DOI: 10.1016/j.ifset.2021.102795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Nam G, Kim M, Jang Y, Cho S. Cold Atmospheric Pressure Microplasma Pipette for Disinfection of Methicillin-Resistant Staphylococcus aureus. MICROMACHINES 2021; 12:1103. [PMID: 34577746 PMCID: PMC8465082 DOI: 10.3390/mi12091103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/10/2021] [Accepted: 09/10/2021] [Indexed: 11/20/2022]
Abstract
Microbial infections should be controlled and prevented for successful wound healing and tissue regeneration. Various disinfection methods exist that use antibiotics, ultraviolet (UV), heat, radiation, or chemical disinfectants; however, cold atmospheric pressure plasma has exhibited a unique and effective antibacterial ability that is not affected by antibiotic resistance or pain. This study develops a cold atmospheric pressure microplasma pipette (CAPMP) that outputs an Ar plasma plume through a tube with an inner radius of 180 μm for disinfection in a small area. The CAPMP was evaluated using Staphylococcus aureus and methicillin-resistant Staphylococcus aureus diluted in liquid media, spread on solid agar, or covered by dressing gauze. An increase in the treatment time of CAPMP resulted in a decrease in the number of colonies of the grown microorganism (colony forming unit) and an increase in the disinfected area for both bacteria. The disinfection ability of CAPMP was observed when the bacteria were covered with dressing gauze and was dependent on the number of gauze layers.
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Affiliation(s)
- Geunyoung Nam
- Department of Biomedical Engineering, Gachon Advanced Institute for Health Science & Technology, Gachon University, 191 Hambakmoe-ro, Incheon 21999, Korea;
| | - Muhwan Kim
- Femto Science Inc., 557 Dongtangiheung-ro, Hwaseong-si 18469, Gyeonggi-do, Korea; (M.K.); (Y.J.)
| | - Yeonsook Jang
- Femto Science Inc., 557 Dongtangiheung-ro, Hwaseong-si 18469, Gyeonggi-do, Korea; (M.K.); (Y.J.)
| | - Sungbo Cho
- Department of Biomedical Engineering, Gachon Advanced Institute for Health Science & Technology, Gachon University, 191 Hambakmoe-ro, Incheon 21999, Korea;
- Department of Electronic Engineering, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si 13120, Gyeonggi-do, Korea
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Jang W, Kim HS, Alam K, Ji MK, Cho HS, Lim HP. Direct-Deposited Graphene Oxide on Dental Implants for Antimicrobial Activities and Osteogenesis. Int J Nanomedicine 2021; 16:5745-5754. [PMID: 34471350 PMCID: PMC8404087 DOI: 10.2147/ijn.s319569] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 07/29/2021] [Indexed: 12/05/2022] Open
Abstract
Objective To determine the effects of graphene oxide (GO) deposition (on a zirconia surface) on bacterial adhesion and osteoblast activation. Methods An atmospheric pressure plasma generator (PGS-300) was used to coat Ar/CH4 mixed gas onto zirconia specimens (15-mm diameter × 2.5-mm thick disks) at a rate of 10 L/min and 240 V. Zirconia specimens were divided into two groups: uncoated (control; Zr) group and GO-coated (Zr-GO) group. Surface characteristics and element structures of each specimen were evaluated by field emission scanning electron microscope (FE-SEM), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and contact angle. Additionally, crystal violet staining was performed to assess the adhesion of Streptococcus mutans. WST-8 and ALP (Alkaline phosphatase) assays were conducted to evaluate MC3T3-E1 osteoblast adhesion, proliferation, and differentiation. Statistical analysis was calculated by the Mann–Whitney U-test. Results FE–SEM and Raman spectroscopy demonstrated effective GO deposition on the zirconia surface in Zr-GO. The attachment and biofilm formation of S. mutans was significantly reduced in Zr-GO compared with that of Zr (P < 0.05). While no significant differences in cell attachment of MC3T3-1 were observed, both proliferation and differentiation were increased in Zr-GO as compared with that of Zr (P < 0.05). Significance GO-coated zirconia inhibited the attachment of S. mutans and stimulated proliferation and differentiation of osteoblasts. Therefore, GO-coated zirconia can prevent peri-implantitis by inhibiting bacterial adhesion. Moreover, its osteogenic ability can increase bone adhesion and success rate of implants.
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Affiliation(s)
- WooHyung Jang
- Department of Prosthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Hee-Seon Kim
- Department of Prosthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
| | - Khurshed Alam
- Department of Materials Science and Engineering, Chonnam National University, Gwangju, 61186, Korea
| | - Min-Kyung Ji
- Optoelectronics Convergence Research Center, Chonnam National University, Gwangju, 61186, Korea
| | - Hoon-Sung Cho
- Department of Materials Science and Engineering, Chonnam National University, Gwangju, 61186, Korea
| | - Hyun-Pil Lim
- Department of Prosthodontics, School of Dentistry, Chonnam National University, Gwangju, Korea
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41
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Tan F, Rui X, Xiang X, Yu Z, Al-Rubeai M. Multimodal treatment combining cold atmospheric plasma and acidic fibroblast growth factor for multi-tissue regeneration. FASEB J 2021; 35:e21442. [PMID: 33774850 DOI: 10.1096/fj.202002611r] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/21/2021] [Accepted: 01/29/2021] [Indexed: 02/07/2023]
Abstract
Cold atmospheric plasma (CAP) is an emerging technology for biomedical applications, exemplified by its antimicrobial and antineoplastic potentials. On the contrary, acidic fibroblast growth factor (aFGF) has been a long-standing potent mitogen for cells from various origins. In this study, we are the first to develop a multimodal treatment combining the aforementioned physicochemical and pharmacological treatments and investigated their individual and combined effects on wound healing, angiogenesis, neurogenesis, and osteogenesis. This work was performed at the tissue, cellular, protein, and gene levels, using histochemical staining, flow cytometry, ELISA, and PCR, respectively. Depending on the type of target tissue, various combinations of aforementioned methods were used. The results showed that the enhancement on would healing and angiogenesis by CAP and aFGF were synergistic. The former was manifested by increased murine fibroblast proliferation and reduced cutaneous tissue inflammation, whereas the latter by upregulated proangiogenic markers in vivo, for example, CD31, VEGF, and TGF-β, and downregulated antiangiogenic proteins in vitro, for example, angiostatin and angiopoietin-2, respectively. In addition, aFGF outperformed CAP during neurogenesis, which was evidenced by superior neurite outgrowth, while CAP exceeded aFGF in osteogenesis which was demonstrated by more substantial bone nodule formation. These novel findings not only support the fact that CAP and aFGF are both multipotent agents during tissue regeneration, but also highlight the potential of our multimodal treatment combining the individual advantages of CAP and aFGF. The versatile administration route, that is, topical and/or systemic, might further broaden its applications.
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Affiliation(s)
- Fei Tan
- Department of ORL-HNS, Shanghai East Hospital, Shanghai, China.,School of Medicine, Tongji University, Shanghai, China.,The Royal College of Surgeons of England, London, UK
| | - Xiaoqing Rui
- Department of ORL-HNS, Shanghai East Hospital, Shanghai, China
| | - Xue Xiang
- Research Center for Translational Medicine, Shanghai East Hospital, Shanghai, China
| | - Zuoren Yu
- School of Medicine, Tongji University, Shanghai, China.,Research Center for Translational Medicine, Shanghai East Hospital, Shanghai, China
| | - Mohamed Al-Rubeai
- Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland
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Levchenko I, Xu S, Baranov O, Bazaka O, Ivanova EP, Bazaka K. Plasma and Polymers: Recent Progress and Trends. Molecules 2021; 26:molecules26134091. [PMID: 34279431 PMCID: PMC8271681 DOI: 10.3390/molecules26134091] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/20/2021] [Accepted: 06/22/2021] [Indexed: 02/06/2023] Open
Abstract
Plasma-enhanced synthesis and modification of polymers is a field that continues to expand and become increasingly more sophisticated. The highly reactive processing environments afforded by the inherently dynamic nature of plasma media are often superior to ambient or thermal environments, offering substantial advantages over other processing methods. The fluxes of energy and matter toward the surface enable rapid and efficient processing, whereas the charged nature of plasma-generated particles provides a means for their control. The range of materials that can be treated by plasmas is incredibly broad, spanning pure polymers, polymer-metal, polymer-wood, polymer-nanocarbon composites, and others. In this review, we briefly outline some of the recent examples of the state-of-the-art in the plasma-based polymer treatment and functionalization techniques.
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Affiliation(s)
- Igor Levchenko
- Plasma Sources and Application Centre, National Institute of Education, Nanyang Technological University, Singapore 637616, Singapore;
- Correspondence: (I.L.); (K.B.)
| | - Shuyan Xu
- Plasma Sources and Application Centre, National Institute of Education, Nanyang Technological University, Singapore 637616, Singapore;
| | - Oleg Baranov
- Faculty of Aircraft Engines, National Aerospace University, 61070 Kharkiv, Ukraine;
| | - Olha Bazaka
- School of Science, RMIT University, P.O. Box 2476, Melbourne, VIC 3001, Australia; (O.B.); (E.P.I.)
| | - Elena P. Ivanova
- School of Science, RMIT University, P.O. Box 2476, Melbourne, VIC 3001, Australia; (O.B.); (E.P.I.)
| | - Kateryna Bazaka
- Plasma Sources and Application Centre, National Institute of Education, Nanyang Technological University, Singapore 637616, Singapore;
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
- School of Engineering, The Australian National University, Canberra, ACT 2601, Australia
- Correspondence: (I.L.); (K.B.)
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Non-Thermal Atmospheric Pressure Argon-Sourced Plasma Flux Promotes Wound Healing of Burn Wounds and Burn Wounds with Infection in Mice through the Anti-Inflammatory Macrophages. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11125343] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Plasma medicine is the utilization of gas ionization that might be beneficial for the treatment of burn wounds, a healthcare problem with a significant mortality rate. Due to a lack of information on the impact of plasma flux in immune cells and a high prevalence of bacterial infection in burn wounds, non-thermal argon-based plasma flux was tested on macrophages (RAW246.7) and in mouse models of burn wounds with or without Staphylococcus aureus infection. Accordingly, plasma flux enhanced reactive oxygen species (ROS), using dihydroethidium assay, and decreased abundance of NF-κB-p65 (Western blot analysis) in non-stimulating macrophages. In parallel, plasma flux upregulated IL-10 gene expression (an anti-inflammatory cytokine) in lipopolysaccharide (LPS)-induced inflammatory macrophages, while downregulating the pro-inflammatory cytokines (IL-1β and IL-6). Additionally, plasma flux improved the migratory function of fibroblasts (L929) (fibroblast scratch assay) but not fibroblast proliferation. Moreover, once daily plasma flux administration for 7 days promoted the healing process in burn wounds with or without infection (wound area and wound rank score). Additionally, plasma flux reduced tissue cytokines (TNF-α and IL-6) in burn wounds with infection and promoted collagen in burn wounds without infection. In conclusion, plasma flux induced anti-inflammatory macrophages and promoted the burn-wound healing process partly through the decrease in macrophage NF-κB. Hence, plasma flux treatment should be tested in patients with burn wounds.
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Direct and Indirect Bactericidal Effects of Cold Atmospheric-Pressure Microplasma and Plasma Jet. Molecules 2021; 26:molecules26092523. [PMID: 33925959 PMCID: PMC8123442 DOI: 10.3390/molecules26092523] [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: 01/30/2021] [Revised: 04/19/2021] [Accepted: 04/21/2021] [Indexed: 11/16/2022] Open
Abstract
The direct and indirect bactericidal effects of dielectric barrier discharge (DBD) cold atmospheric-pressure microplasma in an air and plasma jet generated in an argon-oxygen gas mixture was investigated on Staphylococcus aureus and Cutibacterium acnes. An AC power supply was used to generate plasma at relatively low discharge voltages (0.9-2.4 kV) and frequency (27-30 kHz). Cultured bacteria were cultivated at a serial dilution of 10-5, then exposed to direct microplasma treatment and indirect treatment through plasma-activated water (PAW). The obtained results revealed that these methods of bacterial inactivation showed a 2 and 1 log reduction in the number of survived CFU/mL with direct treatment being the most effective means of treatment at just 3 min using air. UV-Vis spectroscopy confirmed that an increase in treatment time at 1.2% O2, 98.8% Ar caused a decrease in O2 concentration in the water as well as a decrease in absorbance of the peaks at 210 nm, which are attributed NO2- and NO3- concentration in the water, termed denitratification and denitritification in the treated water, respectively.
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Glover K, Stratakos AC, Varadi A, Lamprou DA. 3D scaffolds in the treatment of diabetic foot ulcers: New trends vs conventional approaches. Int J Pharm 2021; 599:120423. [PMID: 33647412 DOI: 10.1016/j.ijpharm.2021.120423] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 02/20/2021] [Accepted: 02/20/2021] [Indexed: 12/22/2022]
Abstract
Diabetic foot ulcer (DFU) is a serious complication of diabetes mellitus, affecting roughly 25% of diabetic patients and resulting in lower limb amputation in over 70% of known cases. In addition to the devastating physiological consequences of DFU and its impact on patient quality of life, DFU has significant clinical and economic implications. Various traditional therapies are implemented to effectively treat DFU. However, emerging technologies such as bioprinting and electrospinning, present an exciting opportunity to improve current treatment strategies through the development of 3D scaffolds, by overcoming the limitations of current wound healing strategies. This review provides a summary on (i) current prevention and treatment strategies available for DFU; (ii) methods of fabrication of 3D scaffolds relevant for this condition; (iii) suitable materials and commonly used molecules for the treatment of DFU; and (iv) future directions offered by emerging technologies.
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Affiliation(s)
- Katie Glover
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK
| | - Alexandros Ch Stratakos
- Faculty of Health and Applied Sciences, Center for Research in Biosciences, University of the West of England, Bristol BS16 1QY, UK
| | - Aniko Varadi
- Faculty of Health and Applied Sciences, Center for Research in Biosciences, University of the West of England, Bristol BS16 1QY, UK
| | - Dimitrios A Lamprou
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, UK.
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Abstract
Plasma is an electrically conducting medium that responds to electric and magnetic fields. It consists of large quantities of highly reactive species, such as ions, energetic electrons, exited atoms and molecules, ultraviolet photons, and metastable and active radicals. Non-thermal or cold plasmas are partially ionized gases whose electron temperatures usually exceed several tens of thousand degrees K, while the ions and neutrals have much lower temperatures. Due to the presence of reactive species at low temperature, the biological effects of non-thermal plasmas have been studied for application in the medical area with promising results. This review outlines the application of cold atmospheric pressure plasma (CAPP) in dentistry for the control of several pathogenic microorganisms, induction of anti-inflammatory, tissue repair effects and apoptosis of cancer cells, with low toxicity to healthy cells. Therefore, CAPP has potential to be applied in many areas of dentistry such as cariology, periodontology, endodontics and oral oncology.
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A KHz frequency cold atmospheric pressure argon plasma jet for the emission of O( 1S) auroral lines in ambient air. Sci Rep 2021; 11:1893. [PMID: 33479428 PMCID: PMC7820241 DOI: 10.1038/s41598-021-81488-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 01/07/2021] [Indexed: 12/02/2022] Open
Abstract
Creation of the “auroral” green line, a fascinating occurrence commonly observed in the upper atmosphere, has long been a difficult endeavor, especially at atmospheric pressure. Here we report strong emission of the “auroral” green line for the first time in a kHz frequency, linear field atmospheric pressure plasma jet system. The device used 99.999% pure argon as a working gas for the plasma generation. Optical emission spectroscopy measurements of the after discharge region show the existence of 557.7 nm emission which corresponds to the transition O(\documentclass[12pt]{minimal}
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\begin{document}$$^1$$\end{document}1S)–O(\documentclass[12pt]{minimal}
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\begin{document}$$^1$$\end{document}1D). The intensity of the produced green line is strong enough that the entire plasma plume in the ambient air is visible as a green plasma. We provide the chemical reactions of O(\documentclass[12pt]{minimal}
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\begin{document}$$^1$$\end{document}1S) production in the plasma and the estimation of the density of the O(\documentclass[12pt]{minimal}
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\begin{document}$$^1$$\end{document}1S) metastable state using the kinetic reactions. Further, the O(\documentclass[12pt]{minimal}
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\begin{document}$$^1$$\end{document}1S) emission is characterized by changing the flow rate of argon, applied voltage and electrode gap. The adequate plasma length (\documentclass[12pt]{minimal}
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\begin{document}$$> 25 \, \hbox {mm}$$\end{document}>25mm) along with the production of a variety of reactive components viz; OH, \documentclass[12pt]{minimal}
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\begin{document}$${\hbox {N}}_{2}^{+}$$\end{document}N2+ and oxygen (777 nm) make this configuration useful for applications such as: blood coagulation, cancer treatment, sterilization, and waste treatment. Moreover, this setup can be potentially used as a test bed for the in-depth understanding of plasma chemistry relevant to the aurora and comet tails using a laboratory setting.
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Heslin C, Boehm D, Gilmore BF, Megaw J, Freeman TA, Hickok NJ, Cullen PJ, Bourke P. Biomolecules as Model Indicators of In Vitro and In Vivo Cold Plasma Safety. FRONTIERS IN PHYSICS 2021; 8:613046. [PMID: 37124146 PMCID: PMC10136044 DOI: 10.3389/fphy.2020.613046] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The potential applications for cold plasma in medicine are extensive, from microbial inactivation and induction of apoptosis in cancer cells to stimulating wound healing and enhancing the blood coagulation cascade. The safe bio-medical application of cold plasma and subsequent effect on complex biological pathways requires precision and a distinct understanding of how physiological redox chemistry is manipulated. Chemical modification of biomolecules such as carbohydrates, proteins, and lipids treated with cold plasma have been characterized, however, the context of how alterations of these molecules affect cell behavior or in vivo functionality has not been determined. Thus, this study examines the cytotoxic and mutagenic effects of plasma-treated molecules in vitro using CHO-K1 cells and in vivo in Galleria mellonella larvae. Specifically, albumin, glucose, cholesterol, and arachidonic acid were chosen as representative biomolecules, with established involvement in diverse bioprocesses including; cellular respiration, intracellular transport, cell signaling or membrane structure. Long- and short-term effects depended strongly on the molecule type and the treatment milieu indicating the impact of chemical and physical modifications on downstream biological pathways. Importantly, absence of short-term toxicity did not always correlate with absence of longer-term effects, indicating the need to comprehensively assess ongoing effects for diverse biological applications.
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Affiliation(s)
- Caitlin Heslin
- School of Food Science and Environmental Health, Technological University Dublin, Dublin, Ireland
| | - Daniela Boehm
- School of Food Science and Environmental Health, Technological University Dublin, Dublin, Ireland
| | | | - Julianne Megaw
- School of Pharmacy, Queens University Belfast, Belfast, United Kingdom
| | - Theresa A. Freeman
- Department of Orthopaedic Surgery, Sidney Kimmel Medical College, Jefferson University, Philadelphia, PA, United States
| | - Noreen J. Hickok
- Department of Orthopaedic Surgery, Sidney Kimmel Medical College, Jefferson University, Philadelphia, PA, United States
| | - P. J. Cullen
- School of Food Science and Environmental Health, Technological University Dublin, Dublin, Ireland
- School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, NSW, Australia
| | - Paula Bourke
- School of Food Science and Environmental Health, Technological University Dublin, Dublin, Ireland
- School of Biological Sciences, Queens University Belfast, Belfast, United Kingdom
- Plasma Research Group, School of Biosystems and Food Engineering, University College Dublin, Dublin, Ireland
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Comprehensive biomedical applications of low temperature plasmas. Arch Biochem Biophys 2020; 693:108560. [PMID: 32857998 PMCID: PMC7448743 DOI: 10.1016/j.abb.2020.108560] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/20/2020] [Accepted: 08/24/2020] [Indexed: 02/08/2023]
Abstract
The main component of plasma medicine is the use of low-temperature plasma (LTP) as a powerful tool for biomedical applications. LTP generates high reactivity at low temperatures and can be activated with noble gases with molecular mixtures or compressed air. LTP reactive species are quickly produced, and are a remarkably good source of reactive oxygen and nitrogen species including singlet oxygen (O2), ozone (O3), hydroxyl radicals (OH), nitrous oxide (NO), and nitrogen dioxide (NO2). Its low gas temperature and highly reactive non-equilibrium chemistry make it appropriate for the alteration of inorganic surfaces and delicate biological systems. Treatment of oral biofilm-related infections, treatment of wounds and skin diseases, assistance in cancer treatment, treatment of viruses' infections (e.g. herpes simplex), and optimization of implants surfaces are included among the extensive plasma medicine applications. Each of these applications will be discussed in this review article.
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Kováčová M, Bodík M, Mičušík M, Humpolíček P, Šiffalovič P, Špitálsky Z. Increasing the effectivity of the antimicrobial surface of carbon quantum dots-based nanocomposite by atmospheric pressure plasma. CLINICAL PLASMA MEDICINE 2020. [DOI: 10.1016/j.cpme.2020.100111] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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