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Čolić M, Kraljević Pavelić S, Peršurić Ž, Agaj A, Bulog A, Pavelić K. Enhancing the bioavailability and activity of natural antioxidants with nanobubbles and nanoparticles. Redox Rep 2024; 29:2333619. [PMID: 38577911 PMCID: PMC11000614 DOI: 10.1080/13510002.2024.2333619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024] Open
Abstract
KEY POLICY HIGHLIGHTSNanobubbles and nanoparticles may enhance the polyphenols' bioavailabilityNanobubbles may stimulate the activation of Nrf2 and detox enzymesArmoured oxygen nanobubbles may enhance radiotherapy or chemotherapy effects.
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Affiliation(s)
| | | | - Željka Peršurić
- Faculty of Medicine, Juraj Dobrila University of Pula, Pula, Croatia
| | - Andrea Agaj
- Faculty of Medicine, Juraj Dobrila University of Pula, Pula, Croatia
| | - Aleksandar Bulog
- Teaching Institute for Public Health of Primorsko-Goranska County, Rijeka, Croatia
- Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Krešimir Pavelić
- Faculty of Medicine, Juraj Dobrila University of Pula, Pula, Croatia
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2
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Tian S, Tan S, Fan M, Gong W, Yang T, Jiao F, Qiao H. Hypoxic environment of wounds and photosynthesis-based oxygen therapy. BURNS & TRAUMA 2024; 12:tkae012. [PMID: 38860010 PMCID: PMC11163460 DOI: 10.1093/burnst/tkae012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 03/04/2024] [Accepted: 03/13/2024] [Indexed: 06/12/2024]
Abstract
The hypoxic environment is among the most important factors that complicates the healing of chronic wounds, such as venous leg ulcers, pressure injuries and diabetic foot ulcers, which seriously affects the quality of life of patients. Various oxygen supply treatments are used in clinical practice to improve the hypoxic environment at the wound site. However, problems still occur, such as insufficient oxygen supply, short oxygen infusion time and potential biosafety risks. In recent years, artificial photosynthetic systems have become a research hotspot in the fields of materials and energy. Photosynthesis is expected to improve the oxygen level at wound sites and promote wound healing because the method provides a continuous oxygen supply and has good biosafety. In this paper, oxygen treatment methods for wounds are reviewed, and the oxygen supply principle and construction of artificial photosynthesis systems are described. Finally, research progress on the photosynthetic oxygen production system to promote wound healing is summarized.
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Affiliation(s)
- Shuning Tian
- Jiangsu Engineering Research Center for Efficient Delivery System of TCM, School of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Qixia District, Nanjing 210023, China
| | - Shenyu Tan
- Jiangsu Engineering Research Center for Efficient Delivery System of TCM, School of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Qixia District, Nanjing 210023, China
| | - Mingjie Fan
- Jiangsu Engineering Research Center for Efficient Delivery System of TCM, School of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Qixia District, Nanjing 210023, China
| | - Wenlin Gong
- Jiangsu Engineering Research Center for Efficient Delivery System of TCM, School of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Qixia District, Nanjing 210023, China
| | - Tianchang Yang
- Jiangsu Engineering Research Center for Efficient Delivery System of TCM, School of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Qixia District, Nanjing 210023, China
| | - Fangwen Jiao
- Department of Pathogen Biology, School of Medicine and Holistic Integrative Medicine, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Qixia District, Nanjing 210023, China
| | - Hongzhi Qiao
- Jiangsu Engineering Research Center for Efficient Delivery System of TCM, School of Pharmacy, Nanjing University of Chinese Medicine, 138 Xianlin Avenue, Qixia District, Nanjing 210023, China
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Han X, Ju L, Saengow C, Ren W, Ewoldt R, Fan T, Irudayaraj J. Nano oxygen chamber by cascade reaction for hypoxia mitigation and reactive oxygen species scavenging in wound healing. Bioact Mater 2024; 35:67-81. [PMID: 38312517 PMCID: PMC10835133 DOI: 10.1016/j.bioactmat.2024.01.010] [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: 10/22/2023] [Revised: 12/26/2023] [Accepted: 01/11/2024] [Indexed: 02/06/2024] Open
Abstract
Hypoxia, excessive reactive oxygen species (ROS), and impaired angiogenesis are prominent obstacles to wound healing following trauma and surgical procedures, often leading to the development of keloids and hypertrophic scars. To address these challenges, a novel approach has been proposed, involving the development of a cascade enzymatic reaction-based nanocarriers-laden wound dressing. This advanced technology incorporates superoxide dismutase modified oxygen nanobubbles and catalase modified oxygen nanobubbles within an alginate hydrogel matrix. The oxygen nano chamber functions through a cascade reaction between superoxide dismutase and catalase, wherein excessive superoxide in the wound environment is enzymatically decomposed into hydrogen peroxide, and this hydrogen peroxide is subsequently converted into oxygen by catalase. This enzymatic cascade effectively controls wound inflammation and hypoxia, mitigating the risk of keloid formation. Concurrently, the oxygen nanobubbles release oxygen continuously, thus providing a sustained supply of oxygen to the wound site. The oxygen release from this dynamic system stimulates fibroblast proliferation, fosters the formation of new blood vessels, and contributes to the overall wound healing process. In the rat full-thickness wound model, the cascade reaction-based nano oxygen chamber displayed a notable capacity to expedite wound healing without scarring. Furthermore, in the pilot study of porcine full-thickness wound healing, a notable acceleration of tissue repair was observed in the conceived cascade reaction-based gel treated group within the 3 days post-surgery, which represents the proliferation stage of healing process. These achievements hold significant importance in ensuring the complete functional recovery of tissues, thereby highlighting its potential as a promising approach for enhancing wound healing outcomes.
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Affiliation(s)
- Xiaoxue Han
- Department of Bioengineering, 1102 Everitt Lab, 1406 W. Green St., University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Biomedical Research Center, Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL, 61801, USA
- Cancer Center at Illinois, Beckman Institute, Urbana, IL, 61801, USA
| | - Leah Ju
- Department of Bioengineering, 1102 Everitt Lab, 1406 W. Green St., University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Biomedical Research Center, Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL, 61801, USA
| | - Chai Saengow
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Wen Ren
- Department of Bioengineering, 1102 Everitt Lab, 1406 W. Green St., University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Biomedical Research Center, Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL, 61801, USA
- Cancer Center at Illinois, Beckman Institute, Urbana, IL, 61801, USA
| | - Randy Ewoldt
- Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Timothy Fan
- Cancer Center at Illinois, Beckman Institute, Urbana, IL, 61801, USA
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
| | - Joseph Irudayaraj
- Department of Bioengineering, 1102 Everitt Lab, 1406 W. Green St., University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
- Biomedical Research Center, Mills Breast Cancer Institute, Carle Foundation Hospital, Urbana, IL, 61801, USA
- Cancer Center at Illinois, Beckman Institute, Urbana, IL, 61801, USA
- Carle Illinois College of Medicine, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA
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Ho YJ, Cheng HL, Liao LD, Lin YC, Tsai HC, Yeh CK. Oxygen-loaded microbubble-mediated sonoperfusion and oxygenation for neuroprotection after ischemic stroke reperfusion. Biomater Res 2023; 27:65. [PMID: 37415210 DOI: 10.1186/s40824-023-00400-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 05/21/2023] [Indexed: 07/08/2023] Open
Abstract
BACKGROUND Ischemic stroke-reperfusion (S/R) injury is a crucial issue in the protection of brain function after thrombolysis. The vasodilation induced by ultrasound (US)-stimulated microbubble cavitation has been applied to reduce S/R injury through sonoperfusion. The present study uses oxygen-loaded microbubbles (OMBs) with US stimulation to provide sonoperfusion and local oxygen therapy for the reduction of brain infarct size and neuroprotection after S/R. METHODS The murine S/R model was established by photodynamic thrombosis and thrombolysis at the remote branch of the anterior cerebral artery. In vivo blood flow, partial oxygen pressure (pO2), and brain infarct staining were examined to analyze the validity of the animal model and OMB treatment results. The animal behaviors and measurement of the brain infarct area were used to evaluate long-term recovery of brain function. RESULTS The percentage of blood flow was 45 ± 3%, 70 ± 3%, and 86 ± 2% after 60 min stroke, 20 min reperfusion, and 10 min OMB treatment, respectively, demonstrating sonoperfusion, and the corresponding pO2 level was 60 ± 1%, 76 ± 2%, and 79 ± 4%, showing reoxygenation. After 14 days of treatment, a 87 ± 3% reduction in brain infarction and recovery of limb coordination were observed in S/R mice. The expression of NF-κB, HIF-1α, IL-1β, and MMP-9 was inhibited and that of eNOS, BDNF, Bcl2, and IL-10 was enhanced, indicating activation of anti-inflammatory and anti-apoptosis responses and neuroprotection. Our study demonstrated that OMB treatment combines the beneficial effects of sonoperfusion and local oxygen therapy to reduce brain infarction and activate neuroprotection to prevent S/R injury.
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Affiliation(s)
- Yi-Ju Ho
- Department of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
- Center for Intelligent Drug Systems and Smart Bio-devices (IDS2B), National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Hsiang-Lung Cheng
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, No. 101, Section 2, Kuang-Fu Road, Hsinchu, 30013, Taiwan
| | - Lun-De Liao
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Zhunan, Taiwan
| | - Yu-Chun Lin
- Department of Medical Science, National Tsing Hua University, Hsinchu, Taiwan
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, Taiwan
| | - Hong-Chieh Tsai
- Department of Neurosurgery, Linkou Chang Gung Memorial Hospital, No.5Fuxing St.Guishan Dist., Taoyuan City, 333, Taiwan.
- School of Traditional Chinese Medicine, Chang Gung University, Taoyuan, Taiwan.
| | - Chih-Kuang Yeh
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, No. 101, Section 2, Kuang-Fu Road, Hsinchu, 30013, Taiwan.
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5
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Jannesari M, Akhavan O, Madaah Hosseini HR, Bakhshi B. Oxygen-Rich Graphene/ZnO 2-Ag nanoframeworks with pH-Switchable Catalase/Peroxidase activity as O 2 Nanobubble-Self generator for bacterial inactivation. J Colloid Interface Sci 2023; 637:237-250. [PMID: 36701869 DOI: 10.1016/j.jcis.2023.01.079] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2022] [Revised: 01/10/2023] [Accepted: 01/15/2023] [Indexed: 01/20/2023]
Abstract
The oxygen-rich organic/inorganic (reduced graphene oxide (rGO)/ZnO2-Ag) nanoframeworks as suppliers of O2 nanobubbles (NBs) with dual pH-and-temperature-sensitive behavior were developed to suppress bacterial growth. It was demonstrated that not only the rate but also the final product of oxygen-rich ZnO2 decomposition (to an intermediate product of H2O2) rate was dramatically controlled by pH adjustment. Furthermore, in the presence of Ag nanoparticles, ̇OH radical generation switched to O2 NBs evolution by shifting the pH from acidic to basic/neutral conditions, demonstrating an adjustable nanozyme function-ability between catalase and peroxidase-like activity, respectively. Antibacterial properties of the in-situ generated O2 NBs substantially enhanced against bacterial models including methicillin-resistant Staphylococcus aureus in the presence of rGO. In fact, deflecting the electrons from their main respiratory chain to an oxygen-rich bypath through rGO significantly stimulated reactive oxygen species (ROS) generation, combating bacteria more efficiently. Moreover, NIR laser irradiation-induced temperature rise (due to the inherent photothermal properties of rGO) facilitated ZnO2 decomposition and accelerated growth and collapse of NBs. The simultaneous microscale thermal and mechanical destructions induced stronger antibacterial behavior. These results hold great promises for designing simple organic/inorganic nanoframeworks as solid sources of NBs with tunable enzyme-like ability in response to environmental conditions suitable for forthcoming graphene-based bio-applications.
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Affiliation(s)
- Marziyeh Jannesari
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, P.O. Box 14588, 89694, Tehran, Iran; School of Chemical and Bioprocess Engineering, University College Dublin, Belfield, Dublin 4, Ireland
| | - Omid Akhavan
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, P.O. Box 14588, 89694, Tehran, Iran; Department of Physics, Sharif University of Technology, P.O. Box 11155-9161, Tehran, Iran.
| | - Hamid R Madaah Hosseini
- Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11155-9466, Tehran, Iran
| | - Bita Bakhshi
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran
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6
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Ho YJ, Hsu HC, Wu BH, Lin YC, Liao LD, Yeh CK. Preventing ischemia-reperfusion injury by acousto-mechanical local oxygen delivery. J Control Release 2023; 356:481-492. [PMID: 36921723 DOI: 10.1016/j.jconrel.2023.03.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 02/28/2023] [Accepted: 03/11/2023] [Indexed: 03/17/2023]
Abstract
Ischemia-reperfusion (I/R) injury is a pathological process that causes vascular damage and dysfunction which increases recurrence and/or mortality in myocardial infarction, ischemic stroke, and organ transplantation. We hypothesized that ultrasound-stimulated oxygen-loaded microbubble (O2-MB) cavitation would enhance mechanical force on endothelium and simultaneously release oxygen locally at the targeted vessels. This cooperation between biomechanical and biochemical stimuli might modulate endothelial metabolism, providing a potential clinical approach to the prevention of I/R injury. Murine hindlimb and cardiac I/R models were used to demonstrate the feasibility of injury prevention by O2-MB cavitation. Increased mechanical force on endothelium induced eNOS-activated vasodilation and angiogenesis to prevent re-occlusion at the I/R vessels. Local oxygen therapy increased endothelial oxygenation that inhibited HIF-1α expression, increased ATP generation, and activated cyclin D1 for cell repair. Moreover, a decrease in interstitial H2O2 level reduced the expression of caspase3, NFκB, TNFα, and IL6, thus ameliorating inflammatory responses. O2-MB cavitation showed efficacy in maintaining cardiac function and preventing myocardial fibrosis after I/R. Finally, we present a potential pathway for the modulation of endothelial metabolism by O2-MB cavitation in relation to I/R injury, wound healing, and vascular bioeffects.
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Affiliation(s)
- Yi-Ju Ho
- Department of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan.
| | - Hui-Ching Hsu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Bing-Huan Wu
- Department of Medical Science, National Tsing Hua University, Hsinchu, Taiwan
| | - Yu-Chun Lin
- Department of Medical Science, National Tsing Hua University, Hsinchu, Taiwan; Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, Taiwan
| | - Lun-De Liao
- Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Zhunan, Taiwan
| | - Chih-Kuang Yeh
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan.
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Hansen HHWB, Cha H, Ouyang L, Zhang J, Jin B, Stratton H, Nguyen NT, An H. Nanobubble technologies: Applications in therapy from molecular to cellular level. Biotechnol Adv 2023; 63:108091. [PMID: 36592661 DOI: 10.1016/j.biotechadv.2022.108091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 12/27/2022] [Indexed: 12/31/2022]
Abstract
Nanobubbles are gaseous entities suspended in bulk liquids that have widespread beneficial usage in many industries. Nanobubbles are already proving to be versatile in furthering the effectiveness of disease treatment on cellular and molecular levels. They are functionalized with biocompatible and stealth surfaces to aid in the delivery of drugs. At the same time, nanobubbles serve as imaging agents due to the echogenic properties of the gas core, which can also be utilized for controlled and targeted delivery. This review provides an overview of the biomedical applications of nanobubbles, covering their preparation and characterization methods, discussing where the research is currently focused, and how they will help shape the future of biomedicine.
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Affiliation(s)
- Helena H W B Hansen
- Queensland Micro and Nanotechnology Centre, Griffith University, 170 Kessels Road, Nathan, QLD 4111, Australia
| | - Haotian Cha
- Queensland Micro and Nanotechnology Centre, Griffith University, 170 Kessels Road, Nathan, QLD 4111, Australia
| | - Lingxi Ouyang
- Queensland Micro and Nanotechnology Centre, Griffith University, 170 Kessels Road, Nathan, QLD 4111, Australia
| | - Jun Zhang
- Queensland Micro and Nanotechnology Centre, Griffith University, 170 Kessels Road, Nathan, QLD 4111, Australia
| | - Bo Jin
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Helen Stratton
- School of Environment and Science, Griffith University, Nathan, QLD 4111, Australia
| | - Nam-Trung Nguyen
- Queensland Micro and Nanotechnology Centre, Griffith University, 170 Kessels Road, Nathan, QLD 4111, Australia.
| | - Hongjie An
- Queensland Micro and Nanotechnology Centre, Griffith University, 170 Kessels Road, Nathan, QLD 4111, Australia.
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Kakiuchi K, Kozuka T, Mase N, Miyasaka T, Harii N, Takeoka S. Do Ultrafine Bubbles Work as Oxygen Carriers? LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:1354-1363. [PMID: 36649623 DOI: 10.1021/acs.langmuir.2c01209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Fine bubbles (FBs) are bubbles with sizes less than 100 μm and are divided into ultrafine bubbles (UFBs, < 1 μm) and microbubbles (MBs, 1-100 μm) depending on their size. Although FB aeration is known as a more efficient way than macrobubble aeration to increase the oxygen level in unoxygenated water, few reports have demonstrated whether dispersed UFBs work as oxygen carriers or not. Furthermore, oxygen supersaturation is one of the attractive characteristics of FB dispersion, but the reason is yet to be revealed. In this study, we evaluated the relationship between the FBs, especially UFB concentration, and oxygen content in several situations to reveal the two questions. The FB concentration and oxygen content were examined using particle analyzers and our developed oxygen measurement method, which can measure the oxygen content in FB dispersion, respectively. First, in the evaluations of the oxygen dispersion from UFBs with respect to the surrounding oxygen level, UFBs did become neither small nor diminish even in degassed water. Second, the changes in UFBs and oxygen content upon storage temperature and the existence of a lid during storage were evaluated, and there was no correlation between them. It means UFBs contribute little to the oxygen content in UFB dispersion. Furthermore, the oxygen content in the UFB dispersion decreased over time identically as that of the oxygen-supersaturated water with little UFBs. Third, we evaluated the relationship between FB concentration and oxygen content during FB generation by measuring them simultaneously. The results showed that dispersed MB and UFB concentrations did not account for the supersaturation of the FB dispersion. From the result, it was revealed that 100-200 nm of UFBs themselves did not work as oxygen carriers, and the oxygen supersaturation in FB dispersions was due to the supersaturated state of dissolved oxygen that was prepared during the FB generation process.
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Affiliation(s)
- Kenta Kakiuchi
- Faculty of Science and Engineering, Waseda University (TWIns), 162-8480Tokyo, Japan
| | - Tomoki Kozuka
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, 432-8561Shizuoka, Japan
| | - Nobuyuki Mase
- Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, 432-8561Shizuoka, Japan
- Research Institute of Green Science and Technology, Shizuoka University, 432-8561Shizuoka, Japan
| | - Takehiro Miyasaka
- Department of Human Environmental Science, Shonan Institute of Technology, 251-8511Fujisawa, Kanagawa, Japan
| | - Norikazu Harii
- Department of Community and Family Medicine, Faculty of Medicine, University of Yamanashi, 409-3898Yamanashi, Japan
| | - Shinji Takeoka
- Faculty of Science and Engineering, Waseda University (TWIns), 162-8480Tokyo, Japan
- Research Institute for Science and Engineering, Waseda University, 169-8555Tokyo, Japan
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9
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Fundamentals and applications of nanobubbles: A review. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Sanchez Armengol E, Blanka Kerezsi A, Laffleur F. Allergies caused by textiles: control, research and future perspective in the medical field. Int Immunopharmacol 2022; 110:109043. [PMID: 35843147 DOI: 10.1016/j.intimp.2022.109043] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 07/01/2022] [Accepted: 07/07/2022] [Indexed: 11/05/2022]
Abstract
Textile production forms one of the most polluting industries worldwide. However, other than damaging environmental effects, chemical waste products, such as formaldehyde or thiazolinone, are problematic for human health, as allergic potential is present in these compounds. Mostly, contact dermatitis occurs when human skin is exposed to textiles. Moreover, non-eczemous variants are mainly associated to textiles. In order to diagnose the possible allergy of the patient towards these compounds, in vivo and in vitro methods ca be performed, such as patch testing or cytokine detection assays, respectively. Newest research focuses on medical textiles such as garments or sutures to help in diagnosis, therapy and recovery of the patients. Sutures and dressings with antimicrobial properties, with the release of oxygen and growth factors offer greater properties. In this review, state of the art in the field as well as future perspectives will be discussed, which are based on the smart textiles that are going to become more important and probably widespread after the current limits exceeded.
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Affiliation(s)
- Eva Sanchez Armengol
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Aletta Blanka Kerezsi
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria
| | - Flavia Laffleur
- Department of Pharmaceutical Technology, Institute of Pharmacy, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.
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11
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Lin YJ, Chang Chien BY, Lee YH. Injectable and thermoresponsive hybrid hydrogel with Antibacterial, Anti-inflammatory, oxygen Transport, and enhanced cell growth activities for improved diabetic wound healing. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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12
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Aoki K, Ida Y, Fukushima N, Matsumura H. Topical application of oxygen nano‐bubble water enhances the healing process of ischaemic skin wound healing in an animal model. Int Wound J 2022; 19:1843-1852. [DOI: 10.1111/iwj.13790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/26/2022] [Accepted: 03/05/2022] [Indexed: 11/29/2022] Open
Affiliation(s)
- Kohei Aoki
- Department of Plastic Surgery Tokyo Medical University Shinjuku City Japan
| | - Yukiko Ida
- Department of Plastic Surgery Tokyo Medical University Shinjuku City Japan
| | - Noritoshi Fukushima
- Department of Preventive Medicine and Public Health Tokyo Medical University Shinjuku City Japan
| | - Hajime Matsumura
- Department of Plastic Surgery Tokyo Medical University Shinjuku City Japan
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13
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Abstract
Nanobubbles are nanoscopic gaseous domains than can exist on solid surfaces or in bulk liquids. They have attracted significant attention in the last decade due to their long-time (meta)stability and ready potential for real-world applications, especially in environmental engineering and more sustainable ecosystems, water treatment, irrigation, and crop growth. After reviewing important nano-bubble science and activity, with some of the latest promising results in agriculture, we point out important directions in applications of nano-bubble phenomena for boosting sustainability, with viewpoints on how to revolutionise best-practice environmental and green sustainability, taking into account economic drivers and impacts. More specifically, it is pointed out how nanobubbles may be used as delivery vehicles, or “nano-carriers”, for nutrients or other agents to specific targets in a variety of ecosystems of environmental relevance, and how core this is to realising a vision of ultra-dense NBs in shaping a positive and lasting impact on ecosystems and our natural environment.
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14
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Afshari R, Akhavan O, Hamblin MR, Varma RS. Review of Oxygenation with Nanobubbles: Possible Treatment for Hypoxic COVID-19 Patients. ACS APPLIED NANO MATERIALS 2021; 4:11386-11412. [PMID: 37556289 PMCID: PMC8565459 DOI: 10.1021/acsanm.1c01907] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 10/12/2021] [Indexed: 05/05/2023]
Abstract
The coronavirus disease (COVID-19) pandemic, which has spread around the world, caused the death of many affected patients, partly because of the lack of oxygen arising from impaired respiration or blood circulation. Thus, maintaining an appropriate level of oxygen in the patients' blood by devising alternatives to ventilator systems is a top priority goal for clinicians. The present review highlights the ever-increasing application of nanobubbles (NBs), miniature gaseous vesicles, for the oxygenation of hypoxic patients. Oxygen-containing NBs can exert a range of beneficial physiologic and pharmacologic effects that include tissue oxygenation, as well as tissue repair mechanisms, antiinflammatory properties, and antibacterial activity. In this review, we provide a comprehensive survey of the application of oxygen-containing NBs, with a primary focus on the development of intravenous platforms. The multimodal functions of oxygen-carrying NBs, including antimicrobial, antiinflammatory, drug carrying, and the promotion of wound healing are discussed, including the benefits and challenges of using NBs as a treatment for patients with acute hypoxemic respiratory failure, particularly due to COVID-19.
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Affiliation(s)
- Ronak Afshari
- Department of Physics, Sharif University
of Technology, P.O. Box 11155-9161, Tehran 14588-89694,
Iran
| | - Omid Akhavan
- Department of Physics, Sharif University
of Technology, P.O. Box 11155-9161, Tehran 14588-89694,
Iran
| | - Michael R Hamblin
- Laser Research Centre, Faculty of Health Science,
University of Johannesburg, Doornfontein 2028, South
Africa
| | - Rajender S. Varma
- Regional Center of Advanced Technologies and Materials,
Czech Advanced Technology and Research Institute, Palacky
University, Šlechtitelů 27, Olomouc 78371, Czech
Republic
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15
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Bosanquet DC, Harding KG. Wound healing: potential therapeutic options. Br J Dermatol 2021; 187:149-158. [PMID: 34726774 DOI: 10.1111/bjd.20772] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/04/2021] [Indexed: 12/22/2022]
Abstract
This review highlights the range of therapeutic options available to clinicians treating difficult-to-heal wounds. While certain treatments are established in daily clinical practice, most therapeutic interventions lack robust and rigorous data regarding their efficacy, which would help to determine when, and for whom, they should be used. The purpose of this review is to give a broad overview of the available interventions, with a brief summary of the evidence base for each intervention.
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Affiliation(s)
- D C Bosanquet
- South East Wales Vascular Network, Aneurin Bevan University Health Board, Royal Gwent Hospital, Cardiff Road, Newport, NP16 2UB, UK
| | - K G Harding
- Clinical Innovation Hub, Cardiff University, Cardiff, CF14 4XN, UK.,Skin Research Institute Singapore (SRIS), Singapore
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16
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Ntentakis DP, Ntentaki AM, Delavogia E, Kalomoiris L, Venieri D, Arkadopoulos N, Kalogerakis N. Dissolved oxygen technologies as a novel strategy for non-healing wounds: A critical review. Wound Repair Regen 2021; 29:1062-1079. [PMID: 34655455 DOI: 10.1111/wrr.12972] [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: 05/31/2021] [Revised: 08/14/2021] [Accepted: 09/09/2021] [Indexed: 02/07/2023]
Abstract
Non-healing wounds are steadily becoming a global-health issue. Prolonged hypoxia propagates wound chronicity; yet, oxygenating treatments are considered inadequate to date. Dissolved oxygen (DO) in aqueous solutions introduces a novel approach to enhanced wound oxygenation, and is robustly evaluated for clinical applications. A systematic literature search was conducted, whereby experimental and clinical studies of DO technologies were categorized per engineering approach. Technical principles, methodology, endpoints and outcomes were analysed for both oxygenating and healing effects. Forty articles meeting our inclusion criteria were grouped as follows: DO solutions (17), oxygen (O2 ) dressings (9), O2 hydrogels (11) and O2 emulsions (3). All technologies improved wound oxygenation, each to a variable degree. They also achieved at least one statistically significant outcome related to wound healing, mainly in epithelialization, angiogenesis and collagen synthesis. Scarcity in clinical data and methodological variability precluded quantitative comparisons among the biotechnologies studied. DO technologies warrantee further evaluation for wound oxygenation in the clinical setting. Standardised methodologies and targeted research questions are pivotal to facilitate global integration in healthcare.
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Affiliation(s)
- Dimitrios P Ntentakis
- School of Chemical and Environmental Engineering, Technical University of Crete, Chania, Greece
| | | | - Eleni Delavogia
- Department of Paediatrics, Harvard Medical School, Boston, Massachusetts, USA
| | - Loukas Kalomoiris
- Faculty of Medicine, School of Health Sciences, University of Thessaly, Larissa, Greece
| | - Danae Venieri
- School of Chemical and Environmental Engineering, Technical University of Crete, Chania, Greece
| | - Nikolaos Arkadopoulos
- Fourth Department of Surgery, Faculty of Medicine, School of Health Sciences, National and Kapodistrian University of Athens, Athens, Greece
| | - Nicolas Kalogerakis
- School of Chemical and Environmental Engineering, Technical University of Crete, Chania, Greece
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17
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Paknahad AA, Kerr L, Wong DA, Kolios MC, Tsai SSH. Biomedical nanobubbles and opportunities for microfluidics. RSC Adv 2021; 11:32750-32774. [PMID: 35493576 PMCID: PMC9042222 DOI: 10.1039/d1ra04890b] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Accepted: 09/19/2021] [Indexed: 12/17/2022] Open
Abstract
The use of bulk nanobubbles in biomedicine is increasing in recent years, which is attributable to the array of therapeutic and diagnostic tools promised by developing bulk nanobubble technologies. From cancer drug delivery and ultrasound contrast enhancement to malaria detection and the diagnosis of acute donor tissue rejection, the potential applications of bulk nanobubbles are broad and diverse. Developing these technologies to the point of clinical use may significantly impact the quality of patient care. This review compiles and summarizes a representative collection of the current applications, fabrication techniques, and characterization methods of bulk nanobubbles in biomedicine. Current state-of-the-art generation methods are not designed to create nanobubbles of high concentration and low polydispersity, both characteristics of which are important for several bulk nanobubble applications. To date, microfluidics has not been widely considered as a tool for generating nanobubbles, even though the small-scale precision and real-time control offered by microfluidics may overcome the challenges mentioned above. We suggest possible uses of microfluidics for improving the quality of bulk nanobubble populations and propose ways of leveraging existing microfluidic technologies, such as organ-on-a-chip platforms, to expand the experimental toolbox of researchers working to develop biomedical nanobubbles. The use of bulk nanobubbles in biomedicine is increasing in recent years. This translates into new opportunities for microfluidics, which may enable the generation of higher quality nanobubbles that lead to advances in diagnostics and therapeutics.![]()
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Affiliation(s)
- Ali A Paknahad
- Department of Mechanical and Industrial Engineering, Ryerson University 350 Victoria Street Toronto Ontario M5B 2K3 Canada .,Institute for Biomedical Engineering, Science and Technology (iBEST), A Partnership Between Ryerson University and St. Michael's Hospital 209 Victoria Street Toronto Ontario M5B 1T8 Canada.,Keenan Research Centre for Biomedical Science, Unity Health Toronto 209 Victoria Street Toronto Ontario M5B 1W8 Canada
| | - Liam Kerr
- Department of Mechanical and Industrial Engineering, Ryerson University 350 Victoria Street Toronto Ontario M5B 2K3 Canada .,Institute for Biomedical Engineering, Science and Technology (iBEST), A Partnership Between Ryerson University and St. Michael's Hospital 209 Victoria Street Toronto Ontario M5B 1T8 Canada.,Keenan Research Centre for Biomedical Science, Unity Health Toronto 209 Victoria Street Toronto Ontario M5B 1W8 Canada
| | - Daniel A Wong
- Institute for Biomedical Engineering, Science and Technology (iBEST), A Partnership Between Ryerson University and St. Michael's Hospital 209 Victoria Street Toronto Ontario M5B 1T8 Canada.,Keenan Research Centre for Biomedical Science, Unity Health Toronto 209 Victoria Street Toronto Ontario M5B 1W8 Canada.,Department of Electrical, Computer, and Biomedical Engineering, Ryerson University 350 Victoria Street Toronto Ontario M5B 2K3 Canada
| | - Michael C Kolios
- Institute for Biomedical Engineering, Science and Technology (iBEST), A Partnership Between Ryerson University and St. Michael's Hospital 209 Victoria Street Toronto Ontario M5B 1T8 Canada.,Keenan Research Centre for Biomedical Science, Unity Health Toronto 209 Victoria Street Toronto Ontario M5B 1W8 Canada.,Department of Physics, Ryerson University Toronto Ontario M5B 2K3 Canada
| | - Scott S H Tsai
- Department of Mechanical and Industrial Engineering, Ryerson University 350 Victoria Street Toronto Ontario M5B 2K3 Canada .,Institute for Biomedical Engineering, Science and Technology (iBEST), A Partnership Between Ryerson University and St. Michael's Hospital 209 Victoria Street Toronto Ontario M5B 1T8 Canada.,Keenan Research Centre for Biomedical Science, Unity Health Toronto 209 Victoria Street Toronto Ontario M5B 1W8 Canada.,Graduate Program in Biomedical Engineering, Ryerson University 350 Victoria Street Toronto Ontario M5B 2K3 Canada
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18
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Connaghan F, Avsar P, Patton D, O'Connor T, Moore Z. Impact of topical oxygen therapy on diabetic foot ulcer healing rates: a systematic review. J Wound Care 2021; 30:823-829. [PMID: 34644137 DOI: 10.12968/jowc.2021.30.10.823] [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] [Indexed: 12/30/2022]
Abstract
OBJECTIVE The aim of this systematic review was to determine the impact of topical oxygen therapy (TOT) on diabetic foot ulcer (DFU) healing. METHOD Using systematic review methodology, we considered randomised controlled trials (RCTs), controlled trials, pilot studies and observational studies. The search was conducted in January 2019, using PubMed, CINAHL, Ovid, Cochrane, Web of Science and EMBASE databases. Data analysis was undertaken using RevMan and a narrative synthesis. The article titles were assessed by two authors independently, and the abstracts (when available) of the studies identified by the search strategy were screened for their eligibility, according to the inclusion and exclusion criteria. The full-text version of potentially relevant studies was obtained and two authors independently screened this against the inclusion criteria. Data were extracted using a predesigned extraction tool and all included studies were quality appraised using the Evidence-Based Librarianship checklist. RESULTS The search returned 565 records of which eight met the inclusion criteria. Of the included studies, three were set in single centre outpatient wound clinics, two studies were set in an outpatient wound care research clinic and three studies were multisite. Meta-analysis of four studies was undertaken. DFUs are >2 times more likely to heal with TOT than with standard care alone. The odds ratio (OR)=2.49 (95% confidence interval (CI): 1.59-3.90, p=0.00001). The remaining four studies also showed that using TOT increased healing rates. An included study reported that time to 50% DFU closure was significantly shorter in participants who received the TOT, mean 18.4 days versus 28.9 days in the sham therapy group (p=0.001). However, the validity of 65.5% of the eight studies was assessed as low. CONCLUSION The findings suggest that TOT enhances healing for patients with hard-to-heal DFUs when used with standard care. The results from the trials reviewed also indicate a benefit for patients over standard care alone. However, the sample sizes in the studies were generally small, thus, more RCTs are warranted to further validate these findings. DECLARATION OF INTEREST The authors have no conflicts of interest to declare.
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Affiliation(s)
| | - Pinar Avsar
- Skin Wounds and Trauma Research Centre, Royal College of Surgeons in Ireland, University of Medicine and Health Sciences, Dublin, Ireland
| | - Declan Patton
- Skin Wounds and Trauma Research Centre, Royal College of Surgeons in Ireland, University of Medicine and Health Sciences, Dublin, Ireland.,Adjunct Associate Professor, Fakeeh College of Health Sciences, Jeddah, Saudi Arabia.,Honorary Senior Fellow, Faculty of Science, Medicine and Health, University of Wollongong, Australia.,Adjunct Professor, Griffith University, Australia
| | - Tom O'Connor
- Skin Wounds and Trauma Research Centre, Royal College of Surgeons in Ireland, University of Medicine and Health Sciences, Dublin, Ireland.,Adjunct Professor, Griffith University, Australia.,Honorary Professor, Lida Institute, Shanghai, China.,Adjunct Professor, Fakeeh College of Health Sciences, Jeddah, Saudi Arabia
| | - Zena Moore
- Skin Wounds and Trauma Research Centre, Royal College of Surgeons in Ireland, University of Medicine and Health Sciences, Dublin, Ireland.,Adjunct Professor, Griffith University, Australia.,Honorary Professor, Lida Institute, Shanghai, China.,Adjunct Professor, Fakeeh College of Health Sciences, Jeddah, Saudi Arabia.,Professor, Department of Public Health, Faculty of Medicine and Health Sciences, Ghent University, Belgium.,Visiting Professor, University of Wales, Cardiff, UK
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19
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Sayadi LR, Rowland R, Naides A, Tomlinson L, Ponticorvo A, Durkin AJ, Widgerow AD. A Quantitative Assessment of Wound Healing With Oxygenated Micro/Nanobubbles in a Preclinical Burn Model. Ann Plast Surg 2021; 87:421-426. [PMID: 34559711 PMCID: PMC8555472 DOI: 10.1097/sap.0000000000003017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND Burns are devastating injuries, carry significant morbidity, and require long-term treatment or multiple reconstructive procedures. Wound healing and secondary insults caused by burn wound conversion are amendable to therapeutic intervention, where ischemia has been cited as one of the major factors (Dermatol Surg. 2008;34:1159-1169). Halting injury progression in the zone of stasis is crucial as conversion creates increased burn surface area and depth, leading to local and systemic consequences (J Burns Wounds. 2006;5:e2). Oxygen-carrying micro/nanobubbles, MNB(O2), offer a novel technology that can be used to effectively deliver oxygen to burn wounds and potentially counteract burn wound ischemia. METHODS Topical irrigation with MNB(O2) of full-thickness burn wounds on a rodent model (n = 3) was compared against saline-treated controls (n = 3). Tissue structure (reduced scattering coefficient, μs'), oxyhemoglobin concentration (cHbO2), and tissue perfusion were quantified over the course of 28 days through spatial frequency domain imaging and laser speckle imaging. Histological samples taken at the end of the experiment were examined for evidence of wound healing. RESULTS Findings in this preliminary study showed hastened healing with significant differences in spatial frequency domain imaging-measured μs' during wound healing (days 11-28) in MNB(O2) group. The healing "tipping point" seemed to occur at days 9 to 11 with increased collagen organization and increased cHbO2 occurring around that period confirming the gross healing improvements observed. In addition, histological evidence indicated that only the MNB(O2) burns had reached the remodeling phase by the end of 28-day study period. CONCLUSIONS These preliminary findings propose the potential of MNB(O2) as a topical method for improving burn wound healing.
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Affiliation(s)
- Lohrasb R. Sayadi
- Center for Tissue Engineering, Department of Plastic Surgery, University of California, Irvine, 200 S. Manchester Ave., Suite 650, Orange, CA 92868
| | - Rebecca Rowland
- Beckman Laser Institute and Medical Clinic, University of California, Irvine, 1002 Health Sciences Road East, Irvine, CA 92617
| | - Alexandra Naides
- Center for Tissue Engineering, Department of Plastic Surgery, University of California, Irvine, 200 S. Manchester Ave., Suite 650, Orange, CA 92868
| | - Luke Tomlinson
- Center for Tissue Engineering, Department of Plastic Surgery, University of California, Irvine, 200 S. Manchester Ave., Suite 650, Orange, CA 92868
| | - Adrien Ponticorvo
- Beckman Laser Institute and Medical Clinic, University of California, Irvine, 1002 Health Sciences Road East, Irvine, CA 92617
| | - Anthony J. Durkin
- Beckman Laser Institute and Medical Clinic, University of California, Irvine, 1002 Health Sciences Road East, Irvine, CA 92617
- Department of Biomedical Engineering, University of California, Irvine, 3120 Natural Sciences II, Irvine, CA 92697
| | - Alan D. Widgerow
- Center for Tissue Engineering, Department of Plastic Surgery, University of California, Irvine, 200 S. Manchester Ave., Suite 650, Orange, CA 92868
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20
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Zulbaran-Rojas A, Mishra R, Pham A, Suliburk J, Najafi B. Continuous Diffusion of Oxygen Adjunct Therapy to Improve Scar Reduction after Cervicotomy - A Proof of Concept Randomized Controlled Trial. J Surg Res 2021; 268:585-594. [PMID: 34469858 DOI: 10.1016/j.jss.2021.07.028] [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: 02/22/2021] [Revised: 05/24/2021] [Accepted: 07/29/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Dressing materials are known to influence post-operative surgical wound healing and scar formation (SF). A particular dressing that could promote wound hydration is essential to ensure quick epithelialization and reduce SF. This study examined the effectiveness of a novel Continuous Diffusion of Oxygen (CDO) dressing to reduce scar length post cervicotomy. METHODS A randomized controlled trial was performed in patients undergoing cervicotomy, either for thyroid or parathyroid disease. Patients were randomized to either control (CG) or intervention (IG) groups. The IG received a portable CDO system (TransCu O2, EO2 Concepts Inc., TX, USA), whereas the CG received a standard dressing for a 4-week period. The primary outcome was >10% of scar length reduction and %change in scar length. RESULTS 21 patients were recruited (Age: 53 ± 16 years; 90% female; CG = 9, IG = 12). 5 patients were lost to follow-up. At 4 weeks, 88.8% of the IG significantly achieved >10% of scar reduction (versus CG = 28.5%, d = 0.48, P = 0.049), showing a 40.4% smaller scar (15.7% versus 11.2%, d = 0.13, P = 0.72) compared to the CG. However, the difference was not significant. A sub-sample of patients undergoing thyroidectomy showed a significant scar reduction using CDO (IG = 11.6% versus CG = 5.1%, d = 2.96, P = 0.009). CONCLUSIONS This is the first study to assess scar reduction using CDO adjunct therapy after cervicotomy. Advanced CDO dressings may assist wound healing showing improved outcomes for scar visualization in patients undergoing thyroidectomy. A larger sample is required to validate this observation.
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Affiliation(s)
- Alejandro Zulbaran-Rojas
- Interdisciplinary Consortium on Advanced Motion Performance (iCAMP), Division of Vascular Surgery and Endovascular Therapy, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Ramkinker Mishra
- Interdisciplinary Consortium on Advanced Motion Performance (iCAMP), Division of Vascular Surgery and Endovascular Therapy, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - Alan Pham
- Interdisciplinary Consortium on Advanced Motion Performance (iCAMP), Division of Vascular Surgery and Endovascular Therapy, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas
| | - James Suliburk
- Division of Endocrine Surgery, Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas
| | - Bijan Najafi
- Interdisciplinary Consortium on Advanced Motion Performance (iCAMP), Division of Vascular Surgery and Endovascular Therapy, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas,.
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21
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Kalogerakis N, Kalogerakis GC, Botha QP. Environmental applications of nanobubble technology: Field testing at industrial scale. CAN J CHEM ENG 2021. [DOI: 10.1002/cjce.24211] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Nicolas Kalogerakis
- School of Environmental Engineering Technical University of Crete Chania Greece
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22
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Hu J, Guo S, Hu H, Sun J. Systematic review of the efficacy of topical haemoglobin therapy for wound healing. Int Wound J 2020; 17:1323-1330. [PMID: 32427424 PMCID: PMC7948847 DOI: 10.1111/iwj.13392] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 04/17/2020] [Accepted: 04/19/2020] [Indexed: 12/19/2022] Open
Abstract
Hypoxia is a common cause of poor wound healing, for which a variety of oxygen therapies have been developed. In order to overcome the limitations of traditional methods of treatment, namely the type of equipment, its setting, safety and cost, local haemoglobin therapy has been developed, although no reviews have so far been published. Here, we systematically review the current evidence to establish the efficacy, scope, adverse reactions, and required precautions of this new form of therapy. A search of the literature was conducted in the PubMed, Embase, Scopus, CENTRAL, CINAHL, and Web of science databases, with 17 studies meeting the eligibility criteria, comprising one animal model study and 16 clinical studies. Local haemoglobin therapy is able to safely and effectively promote the healing of a variety of wounds, especially those that are chronic and non-healing. However, premature discontinuation of this treatment can result in impediment to wound healing and even deterioration of the wound. The distinct benefit of the elimination of slough and relief of pain suggests that this technique may represent a new generation of debridement technology. Furthermore, its ease of use and convenience enables patient self-management, thereby greatly reducing health care costs.
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Affiliation(s)
- Jieman Hu
- Department of Gastrointestinal Colorectal and Anal Surgerythe First Hospital of Jilin UniversityChangchunChina
- School of Nursing, Jilin UniversityChangchunChina
| | - Shaoning Guo
- School of Nursing, Jilin UniversityChangchunChina
- Department of AnesthesiologyThe First Hospital of Jilin UniversityChangchunChina
| | - Haiyan Hu
- Department of Gastrointestinal Colorectal and Anal Surgerythe First Hospital of Jilin UniversityChangchunChina
| | - Jianan Sun
- Department of Gastrointestinal Colorectal and Anal Surgerythe First Hospital of Jilin UniversityChangchunChina
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23
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Jannesari M, Akhavan O, Madaah Hosseini HR, Bakhshi B. Graphene/CuO 2 Nanoshuttles with Controllable Release of Oxygen Nanobubbles Promoting Interruption of Bacterial Respiration. ACS APPLIED MATERIALS & INTERFACES 2020; 12:35813-35825. [PMID: 32664715 DOI: 10.1021/acsami.0c05732] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
An oxygen nanoshuttle based on a reduced graphene oxide/copper peroxide (rGO/CuO2) nanocomposite has been presented to deliver in situ oxygen nanobubbles (O2 NBs) for combating bacterial infections. In the presence of rGO, the solid source of oxygen (i.e., CuO2) was decomposed (in response to environmental conditions such as pH and temperature) into O2 NBs in a more controllable and long-lasting trend (from 60 to 144 h). In a neutral buffer, the O2 NBs experienced growth and collapse evolutions, creating a dynamic micro-nanoenvironment around the nanocomposite. In addition to effective battling against methicillin-resistant Staphylococcus aureus bacteria, the O2 NBs demonstrated superior antibacterial properties on Gram-positive S. aureus to those on Gram-negative Escherichia coli bacteria, especially in the presence of rGO. In fact, the rGO contents could provide synergistic effects through harvesting some respiratory electrons (leading to striking interruption of the bacterial respiratory pathway) in one side and transferring them into the O2 NBs, resulting in nanoscale reactive oxygen species (ROS) generation in another side. Moreover, near-infrared laser irradiation induced more damage to the cell membrane due to the synergistic effects of local heat elevation and catalyzing the release/collapse of NBs imposing mechanical disruptions. Our results show that the O2-containing nanoshuttles can effectively be used as intelligent and controllable anti-infection nanorobots in upcoming graphene-based nanobiomedical applications.
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Affiliation(s)
- Marziyeh Jannesari
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, P.O. Box 14588 89694, Tehran, Iran
| | - Omid Akhavan
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, P.O. Box 14588 89694, Tehran, Iran
- Department of Physics, Sharif University of Technology, P.O. Box 11155-9161, Tehran, Iran
| | - Hamid R Madaah Hosseini
- Institute for Nanoscience and Nanotechnology, Sharif University of Technology, P.O. Box 14588 89694, Tehran, Iran
- Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box: 11155-9466, Tehran, Iran
| | - Bita Bakhshi
- Department of Bacteriology, Faculty of Medical Sciences, Tarbiat Modares University, P.O. Box: 14115-175, Tehran, Iran
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Ho YJ, Li JP, Fan CH, Liu HL, Yeh CK. Ultrasound in tumor immunotherapy: Current status and future developments. J Control Release 2020; 323:12-23. [PMID: 32302759 DOI: 10.1016/j.jconrel.2020.04.023] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 04/12/2020] [Accepted: 04/13/2020] [Indexed: 12/24/2022]
Abstract
Immunotherapy has considerable potential in eliminating cancers by activating the host's own immune system, while the thermal and mechanical effects of ultrasound have various applications in tumor therapy. Hyperthermia, ablation, histotripsy, and microbubble stable/inertial cavitation can alter the tumor microenvironment to enhance immunoactivation to inhibit tumor growth. Microbubble cavitation can increase vessel permeability and thereby improve the delivery of immune cells, cytokines, antigens, and antibodies to tumors. Violent microbubble cavitation can disrupt tumor cells and efficiently expose them to numerous antigens so as to promote the maturity of antigen-presenting cells and subsequent adaptive immune-cell activation. This review provides an overview and compares the mechanisms of ultrasound-induced immune modulation for peripheral and brain tumor therapy, even degenerative brain diseases therapy. The possibility of reversing tumors to an immunoactive microenvironment by utilizing the cavitation of microbubbles loaded with therapeutic gases is also proposed as another potential pathway for immunotherapy. Finally, we disuss the challenges and opportunities of ultrasound in immunotherapy for future development.
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Affiliation(s)
- Yi-Ju Ho
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Ju-Pi Li
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300, Taiwan; School of Medicine, Chung Shan Medical University, Taichung 402, Taiwan
| | - Ching-Hsiang Fan
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300, Taiwan
| | - Hao-Li Liu
- Department of Electrical Engineering, Chang-Gung University, Taoyuan 333, Taiwan; Department of Neurosurgery, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan.
| | - Chih-Kuang Yeh
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 300, Taiwan.
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25
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Ho YJ, Hsu HC, Kang ST, Fan CH, Chang CW, Yeh CK. Ultrasonic Transdermal Delivery System with Acid–Base Neutralization-Generated CO2 Microbubble Cavitation. ACS APPLIED BIO MATERIALS 2020; 3:1968-1975. [DOI: 10.1021/acsabm.9b01126] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Yi-Ju Ho
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Hui-Ching Hsu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Shih-Tsung Kang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
- Trust Bio-sonics, Zhubei City 30261, Taiwan
| | - Ching-Hsiang Fan
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Chien-Wen Chang
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Chih-Kuang Yeh
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu 30013, Taiwan
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26
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Varetto G, Verzini F, Trucco A, Frola E, Spalla F, Gibello L, Boero M, Capaldi G, Rispoli P. Oxygen Delivery Therapy with EPIFLO Reduces Wound Hyperperfusion in Patients with Chronic Leg Ulcers: A Laser Speckle Contrast Analysis. Ann Vasc Surg 2019; 64:246-252. [PMID: 31634600 DOI: 10.1016/j.avsg.2019.09.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 09/13/2019] [Accepted: 09/17/2019] [Indexed: 01/02/2023]
Abstract
BACKGROUND Today transdermal continuous oxygen therapy (TCOT) is used in wound care to promote healing by improving local hypoxia and preventing infection, and it has been described to reduce local inflammation over 1 month of administration. The present study aims to investigate the effects of this treatment on wound microcirculation through laser speckle contrast analysis (LASCA). METHODS 20 adult patients (mean age: 76 ± 11.5 years) were prospectively enrolled. Inclusion criteria were presence of venous or mixed lower limb ulcers from three or more months without dimension reduction and without indication to surgery and weekly treatment by our outpatient clinic with silver dressings. Subjects underwent 1 month of TCOT (EPIFLO®) in addition to foam dressing. The primary endpoint was the comparison of ulcer and healthy skin perfusion through LASCA, performed before and after the treatment period. Secondary considered endpoints were wound area, wound area severity index and PUSH Tools 3.0 ulcer severity scales, and pain assessment (Numerical Rating Scale [NRS]). RESULTS Before treatment, the wound area was significantly more perfused than healthy skin (+45%; P = 0.005). At the end of the study, this difference was not significant anymore (+20.5%; P = 0.11). Ulcer perfusion decreased (-12.5%, P = 0.047), whereas healthy skin perfusion did not vary significantly. A reduction of the wound dimension (median difference: 2 cm; P = 0.009) and pain (median difference: 2 NRS point; P < 0.001) after therapy were assessed. CONCLUSIONS LASCA shows that 1 month of TCOT can help reduce hyperperfusion of ulcer bed in patients with chronic lower limb ulcers, strengthening the hypothesis that this treatment effectively contrasts inflammation. This could correlate with the area and pain reduction assessed; however, the absence of a control group in this study does not allow a generalization of this hypothesis. Larger, controlled trials are needed to properly assess the relationship between TCOT effects on wound microenvironment and effective healing process.
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Affiliation(s)
- Gianfranco Varetto
- Division of Vascular and Endovascular Surgery, Department of surgical sciences, University of Torino, A. O. U. Città della Salute e della Scienza, Molinette Hospital, Torino, Italy.
| | - Fabio Verzini
- Division of Vascular and Endovascular Surgery, Department of surgical sciences, University of Torino, A. O. U. Città della Salute e della Scienza, Molinette Hospital, Torino, Italy
| | - Andrea Trucco
- Division of Vascular and Endovascular Surgery, Department of surgical sciences, University of Torino, A. O. U. Città della Salute e della Scienza, Molinette Hospital, Torino, Italy
| | - Edoardo Frola
- Division of Vascular and Endovascular Surgery, Department of surgical sciences, University of Torino, A. O. U. Città della Salute e della Scienza, Molinette Hospital, Torino, Italy
| | - Flavia Spalla
- Division of Vascular and Endovascular Surgery, Department of surgical sciences, University of Torino, A. O. U. Città della Salute e della Scienza, Molinette Hospital, Torino, Italy
| | - Lorenzo Gibello
- Division of Vascular and Endovascular Surgery, Department of surgical sciences, University of Torino, A. O. U. Città della Salute e della Scienza, Molinette Hospital, Torino, Italy
| | - Michele Boero
- Division of Vascular and Endovascular Surgery, Department of surgical sciences, University of Torino, A. O. U. Città della Salute e della Scienza, Molinette Hospital, Torino, Italy
| | - Giacomo Capaldi
- Division of Vascular and Endovascular Surgery, Department of surgical sciences, University of Torino, A. O. U. Città della Salute e della Scienza, Molinette Hospital, Torino, Italy
| | - Pietro Rispoli
- Division of Vascular and Endovascular Surgery, Department of surgical sciences, University of Torino, A. O. U. Città della Salute e della Scienza, Molinette Hospital, Torino, Italy
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27
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Wang S, Yin C, Han X, Guo A, Chen X, Liu S, Liu Y. Improved Healing of Diabetic Foot Ulcer upon Oxygenation Therapeutics through Oxygen-Loading Nanoperfluorocarbon Triggered by Radial Extracorporeal Shock Wave. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:5738368. [PMID: 31485296 PMCID: PMC6710755 DOI: 10.1155/2019/5738368] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Revised: 05/22/2019] [Accepted: 06/24/2019] [Indexed: 12/15/2022]
Abstract
Diabetic foot ulcers (DFUs), the most serious complication of diabetes mellitus, can induce high morbidity, the need to amputate lower extremities, and even death. Although many adjunctive strategies have been applied for the treatment of DFUs, the low treatment efficiency, potential side effects, and high cost are still huge challenges. Recently, nanomaterial-based drug delivery systems (NDDSs) have achieved targeted drug delivery and controlled drug release, offering great promises in various therapeutics for diverse disorders. Additionally, the radial extracorporeal shock wave (rESW) has been shown to function as a robust trigger source for the NDDS to release its contents, as the rESW harbors a potent capability in generating pressure waves and in creating the cavitation effect. Here, we explored the performance of oxygen-loaded nanoperfluorocarbon (Nano-PFC) combined with the rESW as a treatment for DFUs. Prior to in vivo assessment, we first demonstrated the high oxygen affinity in vitro and great biocompatibility of Nano-PFC. Moreover, the rESW-responsive oxygen release behavior from oxygen-saturated Nano-PFC was also successfully verified in vitro and in vivo. Importantly, the wound healing of DFUs was significantly accelerated due to improved blood microcirculation, which was a result of rESW therapy (rESWT), and the targeted release of oxygen into the wound from oxygen-loaded Nano-PFC, which was triggered by the rESW. Collectively, the oxygen-saturated Nano-PFC and rESW provide a completely new approach to treat DFUs, and this study highlights the advantages of combining nanotechnology with rESW in therapeutics.
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Affiliation(s)
- Shunhao Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chunyang Yin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoguang Han
- Beijing Jishuitan Hospital, The 4th Clinical Hospital of Peking University Health Science Center, Beijing 100035, China
| | - Anyi Guo
- Beijing Jishuitan Hospital, The 4th Clinical Hospital of Peking University Health Science Center, Beijing 100035, China
| | - Xiaodong Chen
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - Sijin Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yajun Liu
- Beijing Jishuitan Hospital, The 4th Clinical Hospital of Peking University Health Science Center, Beijing 100035, China
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28
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Massella D, Argenziano M, Ferri A, Guan J, Giraud S, Cavalli R, Barresi AA, Salaün F. Bio-Functional Textiles: Combining Pharmaceutical Nanocarriers with Fibrous Materials for Innovative Dermatological Therapies. Pharmaceutics 2019; 11:E403. [PMID: 31405229 PMCID: PMC6723157 DOI: 10.3390/pharmaceutics11080403] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 07/30/2019] [Accepted: 08/05/2019] [Indexed: 12/16/2022] Open
Abstract
In the field of pharmaceutical technology, significant attention has been paid on exploiting skin as a drug administration route. Considering the structural and chemical complexity of the skin barrier, many research works focused on developing an innovative way to enhance skin drug permeation. In this context, a new class of materials called bio-functional textiles has been developed. Such materials consist of the combination of advanced pharmaceutical carriers with textile materials. Therefore, they own the possibility of providing a wearable platform for continuous and controlled drug release. Notwithstanding the great potential of these materials, their large-scale application still faces some challenges. The present review provides a state-of-the-art perspective on the bio-functional textile technology analyzing the several issues involved. Firstly, the skin physiology, together with the dermatological delivery strategy, is keenly described in order to provide an overview of the problems tackled by bio-functional textiles technology. Secondly, an overview of the main dermatological nanocarriers is provided; thereafter the application of these nanomaterial to textiles is presented. Finally, the bio-functional textile technology is framed in the context of the different dermatological administration strategies; a comparative analysis that also considers how pharmaceutical regulation is conducted.
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Affiliation(s)
- Daniele Massella
- ENSAIT, GEMTEX-Laboratoire de Génie et Matériaux Textiles, F-59000 Lille, France.
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino (TO), Italy.
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China.
| | - Monica Argenziano
- Department of Drug Science and Technology, University of Turin, Via P. Giuria 9, 10125 Torino, Italy
| | - Ada Ferri
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino (TO), Italy
| | - Jinping Guan
- College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China
| | - Stéphane Giraud
- ENSAIT, GEMTEX-Laboratoire de Génie et Matériaux Textiles, F-59000 Lille, France
| | - Roberta Cavalli
- Department of Drug Science and Technology, University of Turin, Via P. Giuria 9, 10125 Torino, Italy
| | - Antonello A Barresi
- Department of Applied Science and Technology, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino (TO), Italy
| | - Fabien Salaün
- ENSAIT, GEMTEX-Laboratoire de Génie et Matériaux Textiles, F-59000 Lille, France
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29
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Abstract
PURPOSE The preservation of transplantable tissue is directly tied to and limited by the ischemia time. Micro/nanobubbles (MNBs) are miniature gaseous voids that allow for the oxygenation of tissue given their high oxygen-carrying capacity. One of the current limitations of islet cell transplantation for type 1 diabetes is poor islet survival, caused by hypoxia, after harvesting the cells from pancreata. As such, the purpose of this study was to elucidate whether MNBs, when added to standard culture medium, improve islet cell survival postharvest. MATERIALS AND METHODS Islet cells were harvested from Sprague-Dawley rat pancreas tissue via a standard collagenase digestion and gradient purification. To create the MNB solution, a shear-based generation system was used to produce both air- and oxygen-filled MNBs in standard Connaught Medical Research Laboratories (CMRL) medium. Four groups, consisting of 500 islet equivalents, were cultured with either the standard CMRL medium, macrobubble-CMRL, MNB (air)-CMRL, or MNB (O2)-CMRL, and they were incubated at 37°C. Each treatment solution was replenished 24 hours postincubation, and after 48 hours of culture, dithizone staining was used to determine the islet cell counts, and the viability was assessed using Calcein AM/propidium iodide staining. RESULTS Islet cells that were preserved in macrobubble-CMRL, MNB (air)-CMRL, and MNB (O2)-CMRL conditions showed an increased survival compared with those cultured with standard CMRL. The islet cells cultured in the MNB (air)-CMRL condition demonstrated the greatest cell survival compared with all other groups, including the pure oxygen-carrying MNBs. None of the MNB treatments significantly altered the viability of the islet cells compared to the control condition. CONCLUSIONS The addition of MNBs to culture medium offers an innovative approach for the oxygenation of transplantable tissue, such as islet cells. This study demonstrated that MNBs filled with air provided the most optimal addition to the islet cell culture medium for improving islet cell survival amongst the treatment groups we tested. Given these findings, we hypothesize that MNBs may also improve the oxygenation and survival of a variety of other tissues, including fat grafts from lipoaspirate, chronic wounds, and solid organs.
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30
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Sayadi LR, Banyard DA, Ziegler ME, Obagi Z, Prussak J, Klopfer MJ, Evans GR, Widgerow AD. Topical oxygen therapy & micro/nanobubbles: a new modality for tissue oxygen delivery. Int Wound J 2018; 15:363-374. [PMID: 29314626 DOI: 10.1111/iwj.12873] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 11/06/2017] [Accepted: 11/16/2017] [Indexed: 12/26/2022] Open
Abstract
Up to 15 billion dollars of US health care expenditure each year is consumed by treatment of poorly healing wounds whose etiologies are often associated with aberrancies in tissue oxygenation. To address this issue, several modes of tissue oxygen delivery systems exist, including Hyperbaric Oxygen Therapy (HBOT) and Topical Oxygen Therapy (TOT), but their efficacies have yet to be fully substantiated. Micro/nanobubbles (MNBs), which range anywhere from 100 μm to <1 μm in diameter and are relatively stable for hours, offer a new mode of oxygen delivery to wounds. The aim of this article is to systematically review literature examining the use of TOT for wound healing and use of MNBs for tissue oxygenation using the MEDLINE database. The search yielded 87 articles (12 MNB articles and 75 TOT articles), of which 52 met the inclusion criteria for this literature review (12 MNB articles and 40 TOT articles). Additionally, we present an analysis on the efficacy of our MNB generating technology and propose its use as a wound healing agent.
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Affiliation(s)
- Lohrasb R Sayadi
- Center for Tissue Engineering, Plastic Surgery Department, University of California, Irvine, California
| | - Derek A Banyard
- Center for Tissue Engineering, Plastic Surgery Department, University of California, Irvine, California
| | - Mary E Ziegler
- Center for Tissue Engineering, Plastic Surgery Department, University of California, Irvine, California
| | - Zaidal Obagi
- Center for Tissue Engineering, Plastic Surgery Department, University of California, Irvine, California
| | - Jordyne Prussak
- Center for Tissue Engineering, Plastic Surgery Department, University of California, Irvine, California
| | - Michael J Klopfer
- Biomedical Engineering Department, University of California, Irvine, California
| | - Gregory Rd Evans
- Center for Tissue Engineering, Plastic Surgery Department, University of California, Irvine, California
| | - Alan D Widgerow
- Center for Tissue Engineering, Plastic Surgery Department, University of California, Irvine, California
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