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Stock C. pH-regulated single cell migration. Pflugers Arch 2024; 476:639-658. [PMID: 38214759 PMCID: PMC11006768 DOI: 10.1007/s00424-024-02907-2] [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: 11/22/2023] [Revised: 12/21/2023] [Accepted: 01/02/2024] [Indexed: 01/13/2024]
Abstract
Over the last two decades, extra- and intracellular pH have emerged as fundamental regulators of cell motility. Fundamental physiological and pathological processes relying on appropriate cell migration, such as embryonic development, wound healing, and a proper immune defense on the one hand, and autoimmune diseases, metastatic cancer, and the progression of certain parasitic diseases on the other, depend on surrounding pH. In addition, migrating single cells create their own localized pH nanodomains at their surface and in the cytosol. By this means, the migrating cells locally modulate their adhesion to, and the re-arrangement and digestion of, the extracellular matrix. At the same time, the cytosolic nanodomains tune cytoskeletal dynamics along the direction of movement resulting in concerted lamellipodia protrusion and rear end retraction. Extracellular pH gradients as found in wounds, inflamed tissues, or the periphery of tumors stimulate directed cell migration, and long-term exposure to acidic conditions can engender a more migratory and invasive phenotype persisting for hours up to several generations of cells after they have left the acidic milieu. In the present review, the different variants of pH-dependent single cell migration are described. The underlying pH-dependent molecular mechanisms such as conformational changes of adhesion molecules, matrix protease activity, actin (de-)polymerization, and signaling events are explained, and molecular pH sensors stimulated by H+ signaling are presented.
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Affiliation(s)
- Christian Stock
- Department of Gastroenterology, Hepatology, Infectiology & Endocrinology, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.
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2
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Tricou LP, Al-Hawat ML, Cherifi K, Manrique G, Freedman BR, Matoori S. Wound pH-Modulating Strategies for Diabetic Wound Healing. Adv Wound Care (New Rochelle) 2024. [PMID: 38149883 DOI: 10.1089/wound.2023.0129] [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] [Indexed: 12/28/2023] Open
Abstract
Significance: Chronic diabetic wounds on the lower extremities (diabetic foot ulcers, DFU) are one of the most prevalent and life-threatening complications of diabetes, responsible for significant loss of quality of life and cost to the health care system. Available pharmacologic treatments fail to achieve complete healing in many patients. Recent studies and investigational treatments have highlighted the potential of modulating wound pH in DFU. Recent Advances: Data from in vitro, preclinical, and clinical studies highlight the role of pH in the pathophysiology of DFU, and topical administration of pH-lowering agents have shown promise as a therapeutic strategy for diabetic wounds. In this critical review, we describe the role of pH in DFU pathophysiology and present selected low-molecular-weight and hydrogel-based pH-modulating systems for wound healing and infection control in diabetic wounds. Critical Issues: The molecular mechanisms leading to pH alterations in diabetic wounds are complex and may differ between in vitro models, animal models of diabetes, and the human pathophysiology. Wound pH-lowering bandages for DFU therapy must be tested in established animal models of diabetic wound healing and patients with diabetes to establish a comprehensive benefit-risk profile. Future Directions: As our understanding of the role of pH in the pathophysiology of diabetic wounds is deepening, new treatments for this therapeutic target are being developed and will be tested in preclinical and clinical studies. These therapeutic systems will establish a target product profile for pH-lowering treatments such as an optimal pH profile for each wound healing stage. Thus, controlling wound bed pH could become a powerful tool to accelerate chronic diabetic wound healing.
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Affiliation(s)
- Léo-Paul Tricou
- Faculté de Pharmacie, Université de Montréal, Montréal, Canada
- ISPB Faculté de Pharmacie, Université Claude Bernard Lyon 1, Lyon, France
- Chemical Engineering Department, Polytechnique Montreal, Montréal, Canada
| | | | - Katia Cherifi
- Faculté de Pharmacie, Université de Montréal, Montréal, Canada
| | | | - Benjamin R Freedman
- Department of Orthopedic Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Simon Matoori
- Faculté de Pharmacie, Université de Montréal, Montréal, Canada
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3
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Stocker M, Blancke Soares A, Liebsch G, Meier RJ, Canis M, Gires O, Haubner F. Quantification of oxygen consumption in head and neck cancer using fluorescent sensor foil technology. Front Oncol 2024; 14:1002798. [PMID: 38390268 PMCID: PMC10882065 DOI: 10.3389/fonc.2024.1002798] [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: 07/25/2022] [Accepted: 01/22/2024] [Indexed: 02/24/2024] Open
Abstract
Introduction Head and neck squamous cell carcinoma (HNSCC) patients suffer from frequent local recurrences that negatively impact on prognosis. Hence, distinguishing tumor and normal tissue is of clinical importance as it may improve the detection of residual tumor tissue in surgical resection margins and during imaging-based surgery planning. Differences in O2 consumption (OC) can be used to this aim, as they provide options for improved surgical, image-guided approaches. Methods In the present study, the potential of a fluorescent sensor foil-based technology to quantify OC in HNSCC was evaluated in an in vitro 3D model and in situ in patients. Results In vitro measurements of OC using hypopharyngeal and esophageal cell lines allowed a specific detection of tumor cell spheroids embedded together with cancer-associated fibroblasts in type I collagen extracellular matrix down to a diameter of 440 µm. Pre-surgery in situ measurements were conducted with a handheld recording device and sensor foils with an oxygen permeable membrane and immobilized O2-reactive fluorescent dyes. Lateral tongue carcinoma and carcinoma of the floor of the mouth were chosen for analysis owing to their facilitated accessibility. OC was evaluated over a time span of 60 seconds and was significantly higher in tumor tissue compared to healthy mucosa in the vicinity of the tumor. Discussion Hence, OC quantification using fluorescent sensor foil-based technology is a relevant parameter for the differentiation of tumor tissue of the head and neck region and may support surgery planning.
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Affiliation(s)
- Magdalena Stocker
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, Ludwig Maximilians University (LMU) Munich, Munich, Germany
| | - Alexandra Blancke Soares
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, Ludwig Maximilians University (LMU) Munich, Munich, Germany
| | - Gregor Liebsch
- PreSens Precision Sensing GmbH, Imaging Solutions, Regensburg, Germany
| | - Robert J Meier
- PreSens Precision Sensing GmbH, Imaging Solutions, Regensburg, Germany
| | - Martin Canis
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, Ludwig Maximilians University (LMU) Munich, Munich, Germany
| | - Olivier Gires
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, Ludwig Maximilians University (LMU) Munich, Munich, Germany
| | - Frank Haubner
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, Ludwig Maximilians University (LMU) Munich, Munich, Germany
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Patenall BL, Carter KA, Ramsey MR. Kick-Starting Wound Healing: A Review of Pro-Healing Drugs. Int J Mol Sci 2024; 25:1304. [PMID: 38279304 PMCID: PMC10816820 DOI: 10.3390/ijms25021304] [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: 12/01/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 01/28/2024] Open
Abstract
Cutaneous wound healing consists of four stages: hemostasis, inflammation, proliferation/repair, and remodeling. While healthy wounds normally heal in four to six weeks, a variety of underlying medical conditions can impair the progression through the stages of wound healing, resulting in the development of chronic, non-healing wounds. Great progress has been made in developing wound dressings and improving surgical techniques, yet challenges remain in finding effective therapeutics that directly promote healing. This review examines the current understanding of the pro-healing effects of targeted pharmaceuticals, re-purposed drugs, natural products, and cell-based therapies on the various cell types present in normal and chronic wounds. Overall, despite several promising studies, there remains only one therapeutic approved by the United States Food and Drug Administration (FDA), Becaplermin, shown to significantly improve wound closure in the clinic. This highlights the need for new approaches aimed at understanding and targeting the underlying mechanisms impeding wound closure and moving the field from the management of chronic wounds towards resolving wounds.
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Affiliation(s)
| | | | - Matthew R. Ramsey
- Department of Dermatology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA (K.A.C.)
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5
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Kalinichev AV, Zieger SE, Koren K. Optical sensors (optodes) for multiparameter chemical imaging: classification, challenges, and prospects. Analyst 2023; 149:29-45. [PMID: 37975528 DOI: 10.1039/d3an01661g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Chemical gradients and uneven distribution of analytes are common in natural and artificial systems. As a result, the ability to visualize chemical distributions in two or more dimensions has gained significant importance in recent years. This has led to the integration of chemical imaging techniques into all domains of analytical chemistry. In this review, we focus on the use of optical sensors, so-called optodes, to obtain real-time and multidimensional images of two or more parameters simultaneously. It is important to emphasize that multiparameter imaging in this context is not confined solely to multiple chemical parameters (analytes) but also encompasses physical (e.g., temperature or flow) or biological (e.g., metabolic activity) parameters. First, we discuss the technological milestones that have paved the way for chemical imaging using optodes. Later, we delve into various strategies that can be taken to enable multiparameter imaging. The latter spans from developing novel receptors that enable the recognition of multiple parameters to chemometrics and machine learning-based techniques for data analysis. We also explore ongoing trends, challenges, and prospects for future developments in this field. Optode-based multiparameter imaging is a rapidly expanding field that is being fueled by cutting-edge technologies. Chemical imaging possesses the potential to provide novel insights into complex samples, bridging not only across various scientific disciplines but also between research and society.
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Affiliation(s)
- Andrey V Kalinichev
- Aarhus University Centre for Water Technology, Department of Biology - Microbiology, Ny Munkegade 116, 8000 Aarhus C, Denmark.
| | - Silvia E Zieger
- Aarhus University Centre for Water Technology, Department of Biology - Microbiology, Ny Munkegade 116, 8000 Aarhus C, Denmark.
| | - Klaus Koren
- Aarhus University Centre for Water Technology, Department of Biology - Microbiology, Ny Munkegade 116, 8000 Aarhus C, Denmark.
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6
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Sajjad A, Ali H, Zia M. Fabrication and evaluation of vitamin doped Zno/AgNPs nanocomposite based wheat gluten films: a promising findings for burn wound treatment. Sci Rep 2023; 13:16072. [PMID: 37752271 PMCID: PMC10522583 DOI: 10.1038/s41598-023-43413-2] [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: 06/20/2023] [Accepted: 09/23/2023] [Indexed: 09/28/2023] Open
Abstract
Burn wound treatment remains a significant issue in wound care management especially when multidrug resistant bacterial infection and accumulation are present. Delayed wound healing is mostly due to ineffectiveness of commercially available wound dressings that protects the wound but less efficient in healing perspective. Therefore, nano-based wound dressing might be efficient solution for wound healing management. The present study reports the fabrication and evaluation of zinc oxide (ZnO) or silver nanoparticles (Ag NPs) capped with vitamin A or E nanocomposite that were incorporated in wheat gluten (WG) films. The chemical structure, phase purity, and morphological features confirmed the successful coating of NPs by vitamins A and E and their interaction with WG during film casting. The maximum swelling response was observed by NPs vitamin composite WG films than control films while slow release of vitamins and NPs from films was observed up to 24 h. WG films either carrying ZnO or Ag NPs, and vitamin A or E demonstrated significant antioxidant and antibacterial potential. The NPs-vitamin composite loaded WG films showed wound contraction within 14 days during in vivo burn wound healing experiments on mice model. The rates of wound healing, re-epithelialization, collagen deposition with fibroblast regeneration, adipocytes, and hair follicle development were observed through visual and histopathological examination. The study reveals that vitamin A or E doped ZnO or Ag NPs fabricated in WG can be efficiently used against burn wounds due to their physiochemical and biological properties. Furthermore the biocompatible nature and biodegradable potential make the films more prone to mankind maneuver for initial protection and healing remedy.
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Affiliation(s)
- Anila Sajjad
- Department of Biotechnology, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Hussain Ali
- Veterinary Farms Management Sub-Division, National Institute of Health, Islamabad, Pakistan
| | - Muhammad Zia
- Department of Biotechnology, Quaid-i-Azam University, Islamabad, 45320, Pakistan.
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Kurz B, Michael HP, Förch A, Wallner S, Zeman F, Decking SM, Ugele I, Hintschich C, Haubner F, Ettl T, Renner K, Brochhausen C, Schreml S. Expression of pH-Sensitive TRPC4 in Common Skin Tumors. Int J Mol Sci 2023; 24:ijms24021037. [PMID: 36674553 PMCID: PMC9862651 DOI: 10.3390/ijms24021037] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/29/2022] [Accepted: 01/04/2023] [Indexed: 01/06/2023] Open
Abstract
TRPCs (transient receptor potential classical or cation channels) play a crucial role in tumor biology, especially in the Ca2+ homeostasis in cancer cells. TRPC4 is a pH-sensitive member of this family of proteins. As solid tumors exhibit an inversed pH-gradient with lowered extracellular and increased intracellular pH, both contributing to tumor progression, TRPC4 might be a signaling molecule in the altered tumor microenvironment. This is the first study to investigate the expression profiles of TRPC4 in common skin cancers such as basal cell carcinoma (BCC), squamous cell carcinoma (SCC), malignant melanoma (MM) and nevus cell nevi (NCN). We found that all SCCs, NCNs, and MMs show positive TRPC4-expression, while BCCs do only in about half of the analyzed samples. These data render TRPC4 an immunohistochemical marker to distinguish SCC and BCC, and this also gives rise to future studies investigating the role of TRPC4 in tumor progression, and especially metastasis as BCCs very rarely spread and are mostly negative for TRPC4.
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Affiliation(s)
- Bernadett Kurz
- Department of Dermatology, University Medical Center Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Hannah Philine Michael
- Department of Dermatology, University Medical Center Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Antonia Förch
- Department of Dermatology, University Medical Center Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Susanne Wallner
- Department of Dermatology, University Medical Center Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Florian Zeman
- Center for Clinical Studies, University Medical Center Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Sonja-Maria Decking
- Department of Otorhinolaryngology, University Medical Center Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Ines Ugele
- Department of Otorhinolaryngology, University Medical Center Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Constantin Hintschich
- Department of Otorhinolaryngology, University Medical Center Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Frank Haubner
- Department of Otorhinolaryngology, University Hospital, Ludwig Maximilians University Munich, Marchioninistraße 15, 81377 Munich, Germany
| | - Tobias Ettl
- Department of Maxillofacial Surgery, University Medical Center Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Kathrin Renner
- Department of Otorhinolaryngology, University Medical Center Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Christoph Brochhausen
- Institute of Pathology, University of Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Stephan Schreml
- Department of Dermatology, University Medical Center Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
- Correspondence:
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8
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The Challenges of O 2 Detection in Biological Fluids: Classical Methods and Translation to Clinical Applications. Int J Mol Sci 2022; 23:ijms232415971. [PMID: 36555613 PMCID: PMC9786805 DOI: 10.3390/ijms232415971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/10/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022] Open
Abstract
Dissolved oxygen (DO) is deeply involved in preserving the life of cellular tissues and human beings due to its key role in cellular metabolism: its alterations may reflect important pathophysiological conditions. DO levels are measured to identify pathological conditions, explain pathophysiological mechanisms, and monitor the efficacy of therapeutic approaches. This is particularly relevant when the measurements are performed in vivo but also in contexts where a variety of biological and synthetic media are used, such as ex vivo organ perfusion. A reliable measurement of medium oxygenation ensures a high-quality process. It is crucial to provide a high-accuracy, real-time method for DO quantification, which could be robust towards different medium compositions and temperatures. In fact, biological fluids and synthetic clinical fluids represent a challenging environment where DO interacts with various compounds and can change continuously and dynamically, and further precaution is needed to obtain reliable results. This study aims to present and discuss the main oxygen detection and quantification methods, focusing on the technical needs for their translation to clinical practice. Firstly, we resumed all the main methodologies and advancements concerning dissolved oxygen determination. After identifying the main groups of all the available techniques for DO sensing based on their mechanisms and applicability, we focused on transferring the most promising approaches to a clinical in vivo/ex vivo setting.
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9
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Investigation of the Mechanism and Chemistry Underlying Staphylococcus aureus ' Ability to Inhibit Pseudomonas aeruginosa Growth In Vitro. J Bacteriol 2022; 204:e0017422. [PMID: 36218351 DOI: 10.1128/jb.00174-22] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Pseudomonas aeruginosa inhibits or eradicates Staphylococcus aureus in most in vitro settings. Nonetheless, P. aeruginosa and S. aureus are commonly isolated from chronically infected, nonhealing wounds and lungs of people with cystic fibrosis (CF). Therefore, we hypothesized that S. aureus could protect itself from P. aeruginosa through glucose-derived metabolites, such as small organic acids, preventing it from being eradicated. This in vitro study demonstrated that S. aureus populations, in the presence of glucose, secrete one or more substances that efficiently eradicate P. aeruginosa in a concentration-dependent manner. These substances had a molecular mass lower than three kDa, were hydrophilic, heat- and proteinase-resistant, and demonstrated a pH-dependent effect. Nuclear magnetic resonance analysis identified acetoin, acetic acid, and oligopeptides or cyclic peptides in glucose-grown S. aureus supernatants. All the tested wild-type and clinical S. aureus strain inhibited P. aeruginosa growth. Thus, we proposed a model in which a cocktail of these compounds, produced by established S. aureus populations in glucose presence, facilitated these two species' coexistence in chronic infections. IMPORTANCE Chronic infections affect a growing part of the population and are associated with high societal and personal costs. Multiple bacterial species are often present in these infections, and multispecies infections are considered more severe than single-species infections. Staphylococcus aureus and Pseudomonas aeruginosa often coexist in chronic infections. However, the interactions between these two species and their coexistence in chronic infections are not fully understood. By exploring in vitro interactions, we found a novel S. aureus-mediated inhibition of P. aeruginosa, and we suggested a model of the coexistence of the two species in chronic infections. With this study, we enhanced our understanding of the pathogenesis of chronic multispecies infections, which is crucial to paving the way for developing improved treatment strategies.
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10
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Ciofu O, Moser C, Jensen PØ, Høiby N. Tolerance and resistance of microbial biofilms. Nat Rev Microbiol 2022; 20:621-635. [PMID: 35115704 DOI: 10.1038/s41579-022-00682-4] [Citation(s) in RCA: 287] [Impact Index Per Article: 143.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/04/2022] [Indexed: 02/07/2023]
Abstract
Chronic infections caused by microbial biofilms represent an important clinical challenge. The recalcitrance of microbial biofilms to antimicrobials and to the immune system is a major cause of persistence and clinical recurrence of these infections. In this Review, we present the extent of the clinical problem, and the mechanisms underlying the tolerance of biofilms to antibiotics and to host responses. We also explore the role of biofilms in the development of antimicrobial resistance mechanisms.
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Affiliation(s)
- Oana Ciofu
- Department of Immunology and Microbiology, Costerton Biofilm Center, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
| | - Claus Moser
- Department of Immunology and Microbiology, Costerton Biofilm Center, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Microbiology, Rigshospitalet, Copenhagen, Denmark
| | - Peter Østrup Jensen
- Department of Immunology and Microbiology, Costerton Biofilm Center, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Microbiology, Rigshospitalet, Copenhagen, Denmark
| | - Niels Høiby
- Department of Immunology and Microbiology, Costerton Biofilm Center, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Clinical Microbiology, Rigshospitalet, Copenhagen, Denmark
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11
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Sim P, Song Y, Yang GN, Cowin AJ, Garg S. In Vitro Wound Healing Properties of Novel Acidic Treatment Regimen in Enhancing Metabolic Activity and Migration of Skin Cells. Int J Mol Sci 2022; 23:ijms23137188. [PMID: 35806191 PMCID: PMC9266998 DOI: 10.3390/ijms23137188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 06/22/2022] [Accepted: 06/24/2022] [Indexed: 02/01/2023] Open
Abstract
Strategies that alter the pH of wounds to improve healing outcomes are an emerging area of interest. Currently, there is limited understanding of the effect of hydrogen (H+) on the functionality of skin cells during proliferation and migration, highlighting the need for research to determine the effect of pH during wound healing. This study aimed to determine the effect of acidification on the metabolic activity and migration of human immortalized keratinocytes (HaCaT) and human foreskin fibroblasts (HFF). In vitro models were used with phosphoric and citric acid buffers at a pH range between 3 and 7. Our results showed that cells were more viable in buffers with low rather than high ionic strength. A time-dependent effect of the acidification treatment was also observed with cell metabolic activity varying with treatment duration and frequency. Our results showed that a 24 h treatment and subsequent resting phase significantly improved cell proliferation and migration. This in vitro study is the first to establish a correlation between the role of acidic pH, molarity and treatment regimen in cellular activity. Our data demonstrated a positive effect of acidic pH on cell metabolic activity and migration rate, suggesting a clinical potential in indications such as wound healing.
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Affiliation(s)
- Pivian Sim
- Centre for Pharmaceutical Innovation (CPI)Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia; (P.S.); (Y.S.)
| | - Yunmei Song
- Centre for Pharmaceutical Innovation (CPI)Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia; (P.S.); (Y.S.)
| | - Gink N. Yang
- Regenerative Medicine, Future Industries Institute, University of South Australia, Adelaide, SA 5095, Australia; (G.N.Y.); (A.J.C.)
| | - Allison J. Cowin
- Regenerative Medicine, Future Industries Institute, University of South Australia, Adelaide, SA 5095, Australia; (G.N.Y.); (A.J.C.)
| | - Sanjay Garg
- Centre for Pharmaceutical Innovation (CPI)Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia; (P.S.); (Y.S.)
- Correspondence: ; Tel.: +61-883021575
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12
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Bacterial responsive hydrogels based on quaternized chitosan and GQDs-ε-PL for chemo-photothermal synergistic anti-infection in diabetic wounds. Int J Biol Macromol 2022; 210:377-393. [PMID: 35526764 DOI: 10.1016/j.ijbiomac.2022.05.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 04/27/2022] [Accepted: 05/02/2022] [Indexed: 01/18/2023]
Abstract
Clinically, systemic antibiotic therapy and traditional dressings care are not satisfactory in treating chronic diabetic ulcers (DU). Therefore, we presented sprayable antibacterial hydrogel for effective treatment of DU by using antibacterial macromolecules (quaternized chitosan, QCS, Mn ≈ 1.5 × 105), photothermal antibacterial nanoparticles (ε-poly-l-lysine grafted graphene quantum dots, GQDs-ε-PL) and miocompatible macromolecules (benzaldehyde-terminated four-arm poly(ethylene glycol), 4 arm PEG-BA) as materials. The results revealed that the hydrogel could be in situ formed in 70-89 s through dynamic imine bonds crosslinking and exhibited a pH-dependent swelling ability and degradability. The hydrogel could respond to bacterial triggered acidic environment to play a synergistic effect of chemotherapy and xenon light irradiated PTT, leading to the rupture of the bacterial membrane and the inactivation of bacteria, promoting the migration and proliferation of fibroblast cell, enhancing the adhesion of platelet endothelial cell, and finally accelerating the healing of infected diabetic wound. Moreover, the hydrogel displayed self-healing, hemostatic, and biocompatible abilities, which could provide a better healing environment for wound and further promote wound healing. Hence, the multifunctional hydrogel is expected to be a potential dressing for the clinical treatment of DU.
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13
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Lustig A, Gefen A. The performance of gelling fibre wound dressings under clinically relevant robotic laboratory tests. Int Wound J 2022; 19 Suppl 1:3-21. [PMID: 35142062 PMCID: PMC9478960 DOI: 10.1111/iwj.13761] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 01/09/2022] [Accepted: 01/13/2022] [Indexed: 12/16/2022] Open
Abstract
The effectiveness of wound dressing performance in exudate management is commonly gauged in simple, non‐realistic laboratory setups, typically, where dressing specimens are submersed in vessels containing aqueous solutions, rather than by means of clinically relevant test configurations. Specifically, two key fluid–structure interaction concepts: sorptivity—the ability of wound dressings to transfer exudate, including viscous fluids, away from the wound bed by capillary action and durability—the capacity of dressings to maintain their structural integrity over time and particularly, at removal events, have not been properly addressed in existing test protocols. The present article reviews our recent published research concerning the development of clinically relevant testing methods for wound dressings, focussing on the clinical relevance of the tests as well as on the standardisation and automation of laboratory measurements of dressing performance. A second objective of this work was to compile the experimental results characterising the performance of gelling fibre dressings, which were acquired using advanced testing methods, to demonstrate differences across products that apparently belong to the same “gelling fibre” family but differ remarkably in materials, structure and composition and, thereby, in performance.
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Affiliation(s)
- Adi Lustig
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel
| | - Amit Gefen
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel
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14
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Lichtenberg M, Jakobsen TH, Kühl M, Kolpen M, Jensen PØ, Bjarnsholt T. OUP accepted manuscript. FEMS Microbiol Rev 2022; 46:6574409. [PMID: 35472245 PMCID: PMC9438473 DOI: 10.1093/femsre/fuac018] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 04/04/2022] [Accepted: 04/24/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Mads Lichtenberg
- Costerton Biofilm Center, Department of Immunology and Microbiology, University of Copenhagen, Blegdamsvej 3B, 2200, København, Denmark
| | - Tim Holm Jakobsen
- Costerton Biofilm Center, Department of Immunology and Microbiology, University of Copenhagen, Blegdamsvej 3B, 2200, København, Denmark
| | - Michael Kühl
- Marine Biological Section, Department of Biology, University of Copenhagen, Strandpromenaden 5, 3000 Helsingør, Denmark
| | - Mette Kolpen
- Department of Clinical Microbiology, Copenhagen University Hospital, Ole Maaløes vej 26, 2200, København, Denmark
| | - Peter Østrup Jensen
- Costerton Biofilm Center, Department of Immunology and Microbiology, University of Copenhagen, Blegdamsvej 3B, 2200, København, Denmark
- Department of Clinical Microbiology, Copenhagen University Hospital, Ole Maaløes vej 26, 2200, København, Denmark
| | - Thomas Bjarnsholt
- Corresponding author: Costerton Biofilm Center, Department of Immunology and Microbiology, University of Copenhagen, Blegdamsvej 3B, 2200, København, Denmark. Tel: +45 20659888; E-mail:
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15
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Li B, Lin J, Huang P, Chen X. Near-infrared probes for luminescence lifetime imaging. Nanotheranostics 2022; 6:91-102. [PMID: 34976583 PMCID: PMC8671960 DOI: 10.7150/ntno.63124] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 06/29/2021] [Indexed: 12/12/2022] Open
Abstract
Biomedical luminescence imaging in the near-infrared (NIR, 700-1700 nm) region has shown great potential in visualizing biological processes and pathological conditions at cellular and animal levels, owing to the reduced tissue absorption and scattering compared to light in the visible (400-700 nm) region. To overcome the background interference and signal attenuation during intensity-based luminescence imaging, lifetime imaging has demonstrated a reliable imaging modality complementary to intensity measurement. Several selective or environment-responsive probes have been successfully developed for luminescence lifetime imaging and multiplex detection. This review summarizes recent advances in the application of luminescence lifetime imaging at cellular and animal levels in NIR-I and NIR-II regions. Finally, the challenges and further directions of luminescence lifetime imaging are also discussed.
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Affiliation(s)
- Benhao Li
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen 518060, China
- Departments of Diagnostic Radiology, Surgery, Chemical and Biomolecular Engineering, and Biomedical Engineering, Yong Loo Lin School of Medicine and Faculty of Engineering, National University of Singapore, Singapore, 119074, Singapore
- Clinical Imaging Research Centre, Centre for Translational Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
- Nanomedicine Translational Research Program, NUS Center for Nanomedicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
| | - Jing Lin
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen 518060, China
| | - Peng Huang
- Marshall Laboratory of Biomedical Engineering, International Cancer Center, Laboratory of Evolutionary Theranostics (LET), School of Biomedical Engineering, Shenzhen University Health Science Center, Shenzhen 518060, China
| | - Xiaoyuan Chen
- Departments of Diagnostic Radiology, Surgery, Chemical and Biomolecular Engineering, and Biomedical Engineering, Yong Loo Lin School of Medicine and Faculty of Engineering, National University of Singapore, Singapore, 119074, Singapore
- Clinical Imaging Research Centre, Centre for Translational Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
- Nanomedicine Translational Research Program, NUS Center for Nanomedicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
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16
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Tung CH, Han MS, Shen Z, Gray BD, Pak KY, Wang J. Near-Infrared Fluorogenic Spray for Rapid Tumor Sensing. ACS Sens 2021; 6:3657-3666. [PMID: 34549942 DOI: 10.1021/acssensors.1c01370] [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: 12/29/2022]
Abstract
Surgical resection of cancerous tissues is a critical procedure for solid tumor treatment. During the operation, the surgeon mostly identifies the cancerous tissues by naked-eye visualization under white light without aid, therefore, the outcome heavily relies on the surgeon's experience. A near-infrared pH-responsive fluorogenic dye, CypH-11, was designed to be used as a sensitive cancer spray to highlight cancerous tissues during surgical operations, minimizing the surgeon's subjective judgment. CypH-11, pKa 6.0, emits almost no fluorescence at neutral pH but fluoresces brightly in an acidic environment, a ubiquitous consequence of cancer cell proliferation. After topical application, CypH-11 was absorbed quickly, and its fluorescence signal in the cancerous tissue was developed within a minute. The signal-to-background ratio was 1.3 and 1.5 at 1 and 10 min, respectively. The fluorogenic property and near-instant signal development capability enable the "spray-and-see" concept. This fast-acting CypH-11 spray could be a handy and effective tool for fluorescence-guided surgery, identifying small cancerous lesions in real time for optimal resection without systemic toxicity.
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Affiliation(s)
- Ching-Hsuan Tung
- Molecular Imaging Innovations Institute, Department of Radiology, Weill Cornell Medicine, New York, New York 10021, United States
| | - Myung Shin Han
- Molecular Imaging Innovations Institute, Department of Radiology, Weill Cornell Medicine, New York, New York 10021, United States
| | - Zhenhua Shen
- Molecular Imaging Innovations Institute, Department of Radiology, Weill Cornell Medicine, New York, New York 10021, United States
| | - Brian D. Gray
- Molecular Targeting Technologies, Inc., West Chester, Pennsylvania 19380, United States
| | - Koon Y. Pak
- Molecular Targeting Technologies, Inc., West Chester, Pennsylvania 19380, United States
| | - Jianguang Wang
- Molecular Imaging Innovations Institute, Department of Radiology, Weill Cornell Medicine, New York, New York 10021, United States
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17
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Blancke Soares A, Meier R, Liebsch G, Schwenk-Zieger S, Kirmaier ME, Theurich S, Widmann M, Canis M, Gires O, Haubner F. High-resolution spatiotemporal pH e and pO 2 imaging in head and neck and oesophageal carcinoma cells. Cancer Metab 2021; 9:21. [PMID: 33947450 PMCID: PMC8097870 DOI: 10.1186/s40170-021-00257-6] [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: 10/15/2020] [Accepted: 04/07/2021] [Indexed: 12/04/2022] Open
Abstract
Background pO2 and pH are physiological parameters relevant for different processes in health and disease, including wound healing and cancer progression. Head and neck squamous cell carcinomas (HNSCC) and oesophageal squamous cell carcinomas (ESCC) have a high rate of local recurrence that is partly related to treatment-resistant residual tumour cells. Hence, novel diagnostic tools are required to visualise potential residual tumour cells and thereby improve treatment outcome for HNSCC and ESCC patients. We developed a device to spatiotemporally measure oxygen consumption rates (OCR) and extracellular acidification rates (ECAR) to distinguish HNSCC and ESCC cells from healthy cells in vitro, exploiting general metabolic differences between cancer cells and healthy cells. Methods OCR and ECAR were measured via a newly developed device named STO2p-Q (SpatioTemporal O2 and pH Quantification) using the VisiSens technology based on ratiometric fluorescence imaging, facilitating spatiotemporal resolution. Results were confirmed using extracellular flux analyses (Seahorse technology). Results STO2p-Q is described and used to measure OCR and ECAR in HNSCC and ESCC cell lines and normal fibroblast and epithelial cells as components of the tumour microenvironment. OCR measurements showed differences amongst HNSCC and ESCC cell lines and between HNSCC/ESCC and normal cells, which on average had lower OCR than HNSCC/ESCC cells. Both OCR and ECAR measurements were independently verified using the Seahorse technology. Additionally, using STO2p-Q, HNSCC/ESCC, and normal cells could be spatially resolved with a resolution in the low millimetre range. Conclusions We developed a method to spatiotemporally measure OCR and ECAR of cells, which has many potential in vitro applications and lays the foundation for the development of novel diagnostic tools for the detection of cancerous tissue in HNSCC and ESCC patients in vivo. Supplementary Information The online version contains supplementary material available at 10.1186/s40170-021-00257-6.
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Affiliation(s)
- Alexandra Blancke Soares
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Robert Meier
- PreSens Precision Sensing GmbH, Am Biopark 11, 93053, Regensburg, Germany
| | - Gregor Liebsch
- PreSens Precision Sensing GmbH, Am Biopark 11, 93053, Regensburg, Germany
| | - Sabina Schwenk-Zieger
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Martin E Kirmaier
- Department of Medicine III, LMU University Hospital, Ludwig Maximilians University Munich, 81377, Munich, Germany.,Cancer and Immunometabolism Research Group, Gene Center LMU, Ludwig Maximilians University Munich, 81377, Munich, Germany
| | - Sebastian Theurich
- Department of Medicine III, LMU University Hospital, Ludwig Maximilians University Munich, 81377, Munich, Germany.,Cancer and Immunometabolism Research Group, Gene Center LMU, Ludwig Maximilians University Munich, 81377, Munich, Germany
| | - Magdalena Widmann
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Martin Canis
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Olivier Gires
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.,Clinical Cooperation Group "Personalized Radiotherapy in Head and Neck Cancer", Helmholtz Zentrum München, German Research Center for Environmental Health GmbH, 85764, Neuherberg, Germany
| | - Frank Haubner
- Department of Otorhinolaryngology, Head and Neck Surgery, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.
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18
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O'Callaghan S, Galvin P, O'Mahony C, Moore Z, Derwin R. 'Smart' wound dressings for advanced wound care: a review. J Wound Care 2021; 29:394-406. [PMID: 32654609 DOI: 10.12968/jowc.2020.29.7.394] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Hard-to-heal wounds are a common side-effect of diabetes, obesity, pressure ulcers and age-related vascular diseases, the incidences of which are growing worldwide. The increasing financial burden of hard-to-heal wounds on global health services has provoked technological research into improving wound diagnostics and therapeutics via 'smart' dressings, within which elements such as microelectronic sensors, microprocessors and wireless communication radios are embedded. This review highlights the progress being made by research groups worldwide in producing 'smart' wound device prototypes. Significant advances have been made, for example, flexible substrates have replaced rigid circuit boards, sensors have been printed on commercial wound dressing materials and wireless communication has been demonstrated. Challenges remain, however, in the areas of power supply, disposability, low-profile components, multiparametric sensing and seamless device integration in commercial wound dressings.
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Affiliation(s)
- Suzanne O'Callaghan
- Department of Life Sciences Interface, Tyndall National Institute, University College Cork, Ireland
| | - Paul Galvin
- Department of Life Sciences Interface, Tyndall National Institute, University College Cork, Ireland
| | - Conor O'Mahony
- Department of Life Sciences Interface, Tyndall National Institute, University College Cork, Ireland
| | - Zena Moore
- Royal College of Surgeons in Ireland, School of Nursing, 123 St. Stephen's Green, Dublin 2 Dublin, Ireland.,Monash University, Melbourne, Australia.,Ghent University, Belgium.,Lida Institute, Shanghai, China.,University of Wales, Cardiff, Wales
| | - Rosemarie Derwin
- Royal College of Surgeons in Ireland, School of Nursing, 123 St. Stephen's Green, Dublin 2 Dublin, Ireland
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19
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Le Guern F, Mussard V, Gaucher A, Rottman M, Prim D. Fluorescein Derivatives as Fluorescent Probes for pH Monitoring along Recent Biological Applications. Int J Mol Sci 2020; 21:E9217. [PMID: 33287208 PMCID: PMC7729466 DOI: 10.3390/ijms21239217] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 11/24/2020] [Accepted: 12/01/2020] [Indexed: 12/19/2022] Open
Abstract
Potential of hydrogen (pH) is one of the most relevant parameters characterizing aqueous solutions. In biology, pH is intrinsically linked to cellular life since all metabolic pathways are implicated into ionic flows. In that way, determination of local pH offers a unique and major opportunity to increase our understanding of biological systems. Whereas the most common technique to obtain these data in analytical chemistry is to directly measure potential between two electrodes, in biological systems, this information has to be recovered in-situ without any physical interaction. Based on their non-invasive optical properties, fluorescent pH-sensitive probe are pertinent tools to develop. One of the most notorious pH-sensitive probes is fluorescein. In addition to excellent photophysical properties, this fluorophore presents a pH-sensitivity around neutral and physiologic domains. This review intends to shed new light on the recent use of fluorescein as pH-sensitive probes for biological applications, including targeted probes for specific imaging, flexible monitoring of bacterial growth, and biomedical applications.
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Affiliation(s)
- Florent Le Guern
- Institut Lavoisier de Versailles, CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France; (V.M.); (A.G.); (D.P.)
| | - Vanessa Mussard
- Institut Lavoisier de Versailles, CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France; (V.M.); (A.G.); (D.P.)
| | - Anne Gaucher
- Institut Lavoisier de Versailles, CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France; (V.M.); (A.G.); (D.P.)
| | - Martin Rottman
- Faculté de Médecine Simone Veil, Université de Versailles St Quentin, INSERM UMR U1173, 2 Avenue de la Source de la Bièvre, 78180 Montigny le Bretonneux, France;
- Hôpital Raymond Poincaré, AP-HP, GHU Paris Saclay, 104 Bd Poincaré, 92380 Garches, France
| | - Damien Prim
- Institut Lavoisier de Versailles, CNRS, UVSQ, Université Paris-Saclay, 78035 Versailles, France; (V.M.); (A.G.); (D.P.)
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20
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Smart bandage with integrated multifunctional sensors based on MXene-functionalized porous graphene scaffold for chronic wound care management. Biosens Bioelectron 2020; 169:112637. [DOI: 10.1016/j.bios.2020.112637] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 09/06/2020] [Accepted: 09/17/2020] [Indexed: 12/13/2022]
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21
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Cascales JP, Roussakis E, Witthauer L, Goss A, Li X, Chen Y, Marks HL, Evans CL. Wearable device for remote monitoring of transcutaneous tissue oxygenation. BIOMEDICAL OPTICS EXPRESS 2020; 11:6989-7002. [PMID: 33408975 PMCID: PMC7747925 DOI: 10.1364/boe.408850] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 10/30/2020] [Accepted: 11/02/2020] [Indexed: 06/12/2023]
Abstract
Wearable devices have found widespread applications in recent years as both medical devices as well as consumer electronics for sports and health tracking. A metric of health that is often overlooked in currently available technology is the direct measurement of molecular oxygen in living tissue, a key component in cellular energy production. Here, we report on the development of a wireless wearable prototype for transcutaneous oxygenation monitoring based on quantifying the oxygen-dependent phosphorescence of a metalloporphyrin embedded within a highly breathable oxygen sensing film. The device is completely self-contained, weighs under 30 grams, performs on-board signal analysis, and can communicate with computers or smartphones. The wearable measures tissue oxygenation at the skin surface by detecting the lifetime and intensity of phosphorescence, which undergoes quenching in the presence of oxygen. As well as being insensitive to motion artifacts, it offers robust and reliable measurements even in variable atmospheric conditions related to temperature and humidity. Preliminary in vivo testing in a porcine ischemia model shows that the wearable is highly sensitive to changes in tissue oxygenation in the physiological range upon inducing a decrease in limb perfusion.
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22
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Steinegger A, Wolfbeis OS, Borisov SM. Optical Sensing and Imaging of pH Values: Spectroscopies, Materials, and Applications. Chem Rev 2020; 120:12357-12489. [PMID: 33147405 PMCID: PMC7705895 DOI: 10.1021/acs.chemrev.0c00451] [Citation(s) in RCA: 174] [Impact Index Per Article: 43.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Indexed: 12/13/2022]
Abstract
This is the first comprehensive review on methods and materials for use in optical sensing of pH values and on applications of such sensors. The Review starts with an introduction that contains subsections on the definition of the pH value, a brief look back on optical methods for sensing of pH, on the effects of ionic strength on pH values and pKa values, on the selectivity, sensitivity, precision, dynamic ranges, and temperature dependence of such sensors. Commonly used optical sensing schemes are covered in a next main chapter, with subsections on methods based on absorptiometry, reflectometry, luminescence, refractive index, surface plasmon resonance, photonic crystals, turbidity, mechanical displacement, interferometry, and solvatochromism. This is followed by sections on absorptiometric and luminescent molecular probes for use pH in sensors. Further large sections cover polymeric hosts and supports, and methods for immobilization of indicator dyes. Further and more specific sections summarize the state of the art in materials with dual functionality (indicator and host), nanomaterials, sensors based on upconversion and 2-photon absorption, multiparameter sensors, imaging, and sensors for extreme pH values. A chapter on the many sensing formats has subsections on planar, fiber optic, evanescent wave, refractive index, surface plasmon resonance and holography based sensor designs, and on distributed sensing. Another section summarizes selected applications in areas, such as medicine, biology, oceanography, bioprocess monitoring, corrosion studies, on the use of pH sensors as transducers in biosensors and chemical sensors, and their integration into flow-injection analyzers, microfluidic devices, and lab-on-a-chip systems. An extra section is devoted to current challenges, with subsections on challenges of general nature and those of specific nature. A concluding section gives an outlook on potential future trends and perspectives.
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Affiliation(s)
- Andreas Steinegger
- Institute
of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Otto S. Wolfbeis
- Institute
of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, D-93040 Regensburg, Germany
| | - Sergey M. Borisov
- Institute
of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
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23
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Lustig A, Alves P, Call E, Santamaria N, Gefen A. The sorptivity and durability of gelling fibre dressings tested in a simulated sacral pressure ulcer system. Int Wound J 2020; 18:194-208. [PMID: 33236856 PMCID: PMC8243987 DOI: 10.1111/iwj.13515] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 10/03/2020] [Accepted: 10/09/2020] [Indexed: 12/14/2022] Open
Abstract
Wound‐dressing performances are affected by exudate viscosity, resistance to flow because of gravity, and bodyweight loads, the level of which is related to the body position. Here, we focussed on two dressing properties: (a) Sorptivity—the ability of dressings to transfer exudate away from the wound bed by capillary action—and (b) Durability—the capacity of dressings to maintain their integrity over time and during their removal. Both properties are critically important for avoiding further tissue damage but require the development of new laboratory tests for their measurement. A computer‐controlled phantom of an exuding sacral pressure ulcer has therefore been developed and used to compare the performances of Exufiber (Mölnlycke Health Care) vs an alternative market‐leading dressing. Sorptivity was determined using weight tests, and durability was measured through tensile tests of the used dressings. For a supine configuration, the Exufiber dressing demonstrated ~three times higher sorptivity and better durability, withstanding ~five times greater strain energy than the other product before failure occurred. This work paves the way for quantitative, standardised testing of dressings in all aspects of exudate management. The reported tests are further suitable for testing dressing combinations or how dressings interact with negative pressure wound therapy.
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Affiliation(s)
- Adi Lustig
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel
| | - Paulo Alves
- Centre for Interdisciplinary Research in Health, Catholic University of Portugal, Porto, Portugal
| | - Evan Call
- Department of Microbiology, Weber State University, Ogden, Utah, USA
| | - Nick Santamaria
- School of Health Sciences, University of Melbourne, Melbourne, Victoria, Australia
| | - Amit Gefen
- Department of Biomedical Engineering, Faculty of Engineering, Tel Aviv University, Tel Aviv, Israel
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24
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Ávila FR, Huayllani MT, Boczar D, Ciudad P, Sarabia-Estrada R, Quiñones-Hinojosa A, Forte AJ. Materiales sensibles a biomarcadores y apósitos inteligentes: revisión sistemática. J Wound Care 2020; 29:13-22. [PMID: 33251960 DOI: 10.12968/jowc.2020.29.latam_sup_3.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Evaluate a number of biomarkers that can objectively measure the wound healing process, and identify the materials that could replicate this in smart wound dressings. METHOD A systematic review was conducted to establish the use of materials sensitive to biomarkers. Publications in English were included. Review articles and abstracts presented at conferences were excluded. RESULTS A total of 296 studies were identified, of which 19 were included. All of these were experimental studies. The articles evaluated pH, temperature, blood pressure, uric acid, and glucose. The materials used were hydrogels, fibres and conductive inks. CONCLUSION The most cited biomarker was pH. Materials that evaluate biomarkers via colorimetric methods could be the most suitable to incorporate into smart wound dressings.
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Affiliation(s)
- Francisco R Ávila
- Division of Plastic Surgery, Mayo Clinic, Jacksonville, Florida, Estados Unidos
| | - Maria T Huayllani
- Division of Plastic Surgery, Mayo Clinic, Jacksonville, Florida, Estados Unidos
| | - Daniel Boczar
- Division of Plastic Surgery, Mayo Clinic, Jacksonville, Florida, Estados Unidos
| | - Pedro Ciudad
- Departmento de Cirugía Plástica, Reconstructiva y Quemaduras, Hospital Nacional Arzobispo Loayza, Lima, Perú
| | | | | | - Antonio J Forte
- Division of Plastic Surgery, Mayo Clinic, Jacksonville, Florida, Estados Unidos
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25
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Yahya EB, Jummaat F, Amirul AA, Adnan AS, Olaiya NG, Abdullah CK, Rizal S, Mohamad Haafiz MK, Khalil HPSA. A Review on Revolutionary Natural Biopolymer-Based Aerogels for Antibacterial Delivery. Antibiotics (Basel) 2020; 9:E648. [PMID: 32998197 PMCID: PMC7601537 DOI: 10.3390/antibiotics9100648] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 09/24/2020] [Accepted: 09/27/2020] [Indexed: 02/08/2023] Open
Abstract
A biopolymer-based aerogel has been developed to become one of the most potentially utilized materials in different biomedical applications. The biopolymer-based aerogel has unique physical, chemical, and mechanical properties and these properties are used in tissue engineering, biosensing, diagnostic, medical implant and drug delivery applications. Biocompatible and non-toxic biopolymers such as chitosan, cellulose and alginates have been used to deliver antibiotics, plants extract, essential oils and metallic nanoparticles. Antibacterial aerogels have been used in superficial and chronic wound healing as dressing sheets. This review critically analyses the utilization of biopolymer-based aerogels in antibacterial delivery. The analysis shows the relationship between their properties and their applications in the wound healing process. Furthermore, highlights of the potentials, challenges and proposition of the application of biopolymer-based aerogels is explored.
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Affiliation(s)
- Esam Bashir Yahya
- School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia; (E.B.Y.); (N.G.O.); (C.K.A.); (M.K.M.H.)
| | - Fauziah Jummaat
- Management Science University Medical Centre, University Drive, Off Persiaran Olahraga, Section 13, Shah Alam, Selangor 40100, Malaysia;
| | - A. A. Amirul
- School of Biological Sciences, Universiti Sains Malaysia, Penang 11800, Malaysia
| | - A. S. Adnan
- Management Science University Medical Centre, University Drive, Off Persiaran Olahraga, Section 13, Shah Alam, Selangor 40100, Malaysia;
| | - N. G. Olaiya
- School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia; (E.B.Y.); (N.G.O.); (C.K.A.); (M.K.M.H.)
| | - C. K. Abdullah
- School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia; (E.B.Y.); (N.G.O.); (C.K.A.); (M.K.M.H.)
| | - Samsul Rizal
- Department of Mechanical Engineering, Universitas Syiah Kuala, Banda Aceh 23111, Indonesia;
| | - M. K. Mohamad Haafiz
- School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia; (E.B.Y.); (N.G.O.); (C.K.A.); (M.K.M.H.)
| | - H. P. S. Abdul Khalil
- School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia; (E.B.Y.); (N.G.O.); (C.K.A.); (M.K.M.H.)
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26
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Guan S, Li Y, Cheng C, Gao X, Gu X, Han X, Ye H. Manufacture of pH- and HAase-responsive hydrogels with on-demand and continuous antibacterial activity for full-thickness wound healing. Int J Biol Macromol 2020; 164:2418-2431. [PMID: 32798544 DOI: 10.1016/j.ijbiomac.2020.08.108] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 08/10/2020] [Accepted: 08/12/2020] [Indexed: 12/17/2022]
Abstract
A kind of "intelligent" antibacterial dressing-A-HA/HA-ADH/SS hydrogel was in situ formed quickly via dynamic covalent bonds cross-linking between aldehyde hyaluronic acid (A-HA), adipic acid dihydrazide graft hyaluronic acid (HA-ADH) and sisomicin sulfate (SS). FT-IR, SEM and rheological results displayed that the hydrogels were successfully prepared. The hydrogels had good optical transmittance, injectability, self-healing ability, cytocompatibility, antioxidant activity and hemostatic performance which were beneficial to observe the wound healing condition and provide a good healing environment for wounds. In addition, the hydrogels showed a pH- and HAase- dependent degradability, which allowed them to release more SS at infected wound and then exert on-demand and sustained antibacterial effect against S. aureus and E. coli. The results of wound healing and histological examination revealed that these hydrogels have a good therapeutic effect in the full-thickness mouse skin defect wound. Thus, the hydrogels are expected to be used as potential wound dressings to improve wound healing.
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Affiliation(s)
- Shengcan Guan
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, China
| | - Ya Li
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Cui Cheng
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China.
| | - Xiaoran Gao
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China
| | - Xiaofeng Gu
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100081, China
| | - Xiao Han
- College of Biological Science and Engineering, Fuzhou University, Fuzhou 350108, China.
| | - Hanhui Ye
- The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province, Mengchao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, China.
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Cui Y, Duan W, Jin Y, Wo F, Xi F, Wu J. Ratiometric Fluorescent Nanohybrid for Noninvasive and Visual Monitoring of Sweat Glucose. ACS Sens 2020; 5:2096-2105. [PMID: 32450686 DOI: 10.1021/acssensors.0c00718] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Noninvasive and visual monitoring of glucose is highly desirable for diabetes diagnostics and long-term home-based health management. Owing to the correlation of the glucose level between blood and sweat, on-body sweat glucose detection provides potential for noninvasive healthcare but is highly challenging. Herein, we for the first time demonstrate a wearable skin pad based on the ratiometric fluorescent nanohybrid, which can realize noninvasive and visual monitoring of sweat glucose. Luminescent porous silicon (PSi) particles, which have a porous structure and oxidation-responsive photoluminescence decay, are chosen to load (adsorb or entrap) carbon quantum dots (CQDs) for the construction of the dual fluorescence nanohybrid. Bimetallic (Au and Ag) nanoparticles (BiM) are also co-decorated on the PSi particle to improve detection sensitivity by enhancing PSi's initial fluorescence and oxidation kinetics. Owing to the efficient fluorescence resonance energy transfer effect, BiM-CQDs@PSi initially exhibits PSi's red fluorescence with complete quenching of CQDs's blue fluorescence. The oxidation of PSi triggered by hydrogen peroxide (H2O2) weakens the FRET effect and decays PSi's fluorescence, causing ratiometric fluorescence to change from red (PSi) to blue (CQDs). A wearable skin pad is easily fabricated by co-immobilization of BiM-CQDs@PSi and glucose oxidase (GOX) in a transparent and biocompatible chitosan film supported by an adhesive polyurethane membrane. When the skin pad is attached on the body, the same ratiometric fluorescence transition (red → blue) is observed upon the stimulation of H2O2 generated in GOX-catalyzed oxidation of sweat glucose. Based on the strong correlation between the ratio of the fluorescence change and sweat glucose level, clinical tests toward diabetics and healthy volunteers can clearly indicate hyperglycemia.
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Affiliation(s)
- Yaoxuan Cui
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Wei Duan
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Yao Jin
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Fangjie Wo
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Fengna Xi
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jianmin Wu
- Institute of Analytical Chemistry, Department of Chemistry, Zhejiang University, Hangzhou 310058, China
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Wongkaew N, Simsek M, Heider J, Wegener J, Baeumner AJ, Schreml S, Stolwijk JA. Cytocompatibility of Mats Prepared from Different Electrospun Polymer Nanofibers. ACS APPLIED BIO MATERIALS 2020; 3:4912-4921. [DOI: 10.1021/acsabm.0c00426] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Nongnoot Wongkaew
- Institute for Analytical Chemistry, Chemo- and Biosensors, Faculty of Chemistry and Pharmacy, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Marcel Simsek
- Institute for Analytical Chemistry, Chemo- and Biosensors, Faculty of Chemistry and Pharmacy, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Judith Heider
- Department of Dermatology, University Medical Center Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Joachim Wegener
- Institute for Analytical Chemistry, Chemo- and Biosensors, Faculty of Chemistry and Pharmacy, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
- Fraunhofer Research Institution for Microsystems and Solid State Technologies, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Antje J. Baeumner
- Institute for Analytical Chemistry, Chemo- and Biosensors, Faculty of Chemistry and Pharmacy, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
| | - Stephan Schreml
- Department of Dermatology, University Medical Center Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Judith A. Stolwijk
- Institute for Analytical Chemistry, Chemo- and Biosensors, Faculty of Chemistry and Pharmacy, University of Regensburg, Universitätsstraße 31, 93053 Regensburg, Germany
- Department of Dermatology, University Medical Center Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
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Parra-Ortiz E, Malekkhaiat Häffner S, Saerbeck T, Skoda MWA, Browning KL, Malmsten M. Oxidation of Polyunsaturated Lipid Membranes by Photocatalytic Titanium Dioxide Nanoparticles: Role of pH and Salinity. ACS APPLIED MATERIALS & INTERFACES 2020; 12:32446-32460. [PMID: 32589394 DOI: 10.1021/acsami.0c08642] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In the present study, UV-induced membrane destabilization by TiO2 (anatase) nanoparticles was investigated by neutron reflectometry (NR), small-angle X-ray scattering (SAXS), quartz crystal microbalance with dissipation (QCM-D), dynamic light scattering (DLS), and ζ-potential measurements for phospholipid bilayers formed by zwitterionic palmitoyloleoylphosphatidylcholine (POPC) containing biologically relevant polyunsaturations. TiO2 nanoparticles displayed pH-dependent binding to such bilayers. Nanoparticle binding alone, however, has virtually no destabilizing effects on the lipid bilayers. In contrast, UV illumination in the presence of TiO2 nanoparticles activates membrane destabilization as a result of lipid oxidation caused by the generation of reactive oxygen species (ROS), primarily •OH radicals. Despite the short diffusion length characterizing these, the direct bilayer attachment of TiO2 nanoparticles was demonstrated to not be a sufficient criterion for an efficient UV-induced oxidation of bilayer lipids, the latter also depending on ROS generation in bulk solution. From SAXS and NR, minor structural changes were seen when TiO2 was added in the absence of UV exposure, or on UV exposure in the absence of TiO2 nanoparticles. In contrast, UV exposure in the presence of TiO2 nanoparticles caused large-scale structural transformations, especially at high ionic strength, including gradual bilayer thinning, lateral phase separation, increases in hydration, lipid removal, and potential solubilization into aggregates. Taken together, the results demonstrate that nanoparticle-membrane interactions ROS generation at different solution conditions act in concert to induce lipid membrane destabilization on UV exposure and that both of these need to be considered for understanding the performance of UV-triggered TiO2 nanoparticles in nanomedicine.
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Affiliation(s)
- Elisa Parra-Ortiz
- Department of Pharmacy, University of Copenhagen, Copenhagen DK-2100, Denmark
| | | | - Thomas Saerbeck
- Institut Laue-Langevin, CS 20156, Grenoble Cedex 9 38042, France
| | - Maximilian W A Skoda
- ISIS Pulsed Neutron and Muon Source, Rutherford Appleton Laboratory, Harwell, Oxfordshire OX11 OQX, U.K
| | - Kathryn L Browning
- Department of Pharmacy, University of Copenhagen, Copenhagen DK-2100, Denmark
| | - Martin Malmsten
- Department of Pharmacy, University of Copenhagen, Copenhagen DK-2100, Denmark
- Department of Physical Chemistry 1, Lund University, Lund SE-221 00, Sweden
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Stolwijk JA, Sauer L, Ackermann K, Nassios A, Aung T, Haerteis S, Bäumner AJ, Wegener J, Schreml S. pH sensing in skin tumors: Methods to study the involvement of GPCRs, acid-sensing ion channels and transient receptor potential vanilloid channels. Exp Dermatol 2020; 29:1055-1061. [PMID: 32658355 DOI: 10.1111/exd.14150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 07/01/2020] [Accepted: 07/06/2020] [Indexed: 12/19/2022]
Abstract
Solid tumors exhibit an inversed pH gradient with increased intracellular pH (pHi ) and decreased extracellular pH (pHe ). This inside-out pH gradient is generated via sodium/hydrogen antiporter 1, vacuolar-type H + ATPases, monocarboxylate transporters, (bi)carbonate (co)transporters and carboanhydrases. Our knowledge on how pHe -signals are sensed and what the respective receptors induce inside cells is scarce. Some pH-sensitive receptors (GPR4, GPR65/TDAG8, GPR68/OGR1, GPR132/G2A, possibly GPR31 and GPR151) and ion channels (acid-sensing ion channels ASICs, transient receptor potential vanilloid receptors TRPVs) transduce signals inside cells. As little is known on the expression and function of these pH sensors, we used immunostainings to study tissue samples from common and rare skin cancers. Our current and future work is directed towards investigating the impact of all the pH-sensing receptors in different skin tumors using cell culture techniques with selective knockdown/knockout (siRNA/CRISPR-Cas9). To study cell migration and proliferation, novel impedance-based wound healing assays have been developed and are used. The field of pH sensing in tumors and wounds holds great promise for the development of pH-targeting therapies, either against pH regulators or sensors to inhibit cell proliferation and migration.
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Affiliation(s)
- Judith A Stolwijk
- Department of Dermatology, University Medical Center Regensburg, Regensburg, Germany.,Institute of Analytical Chemistry, Chemo- and Biosensors, Faculty of Chemistry and Pharmacy, University of Regensburg, Regensburg, Germany
| | - Lisa Sauer
- Institute of Analytical Chemistry, Chemo- and Biosensors, Faculty of Chemistry and Pharmacy, University of Regensburg, Regensburg, Germany
| | - Kirsten Ackermann
- Department of Dermatology, University Medical Center Regensburg, Regensburg, Germany
| | - Anaïs Nassios
- Department of Dermatology, University Medical Center Regensburg, Regensburg, Germany
| | - Thiha Aung
- Centre of Plastic, Aesthetic, Hand and Reconstructive Surgery, University Medical Center Regensburg, Regensburg, Germany
| | - Silke Haerteis
- Institute of Molecular and Cellular Anatomy, University of Regensburg, Regensburg, Germany
| | - Antje J Bäumner
- Institute of Analytical Chemistry, Chemo- and Biosensors, Faculty of Chemistry and Pharmacy, University of Regensburg, Regensburg, Germany
| | - Joachim Wegener
- Institute of Analytical Chemistry, Chemo- and Biosensors, Faculty of Chemistry and Pharmacy, University of Regensburg, Regensburg, Germany
| | - Stephan Schreml
- Department of Dermatology, University Medical Center Regensburg, Regensburg, Germany
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Insights into Host-Pathogen Interactions in Biofilm-Infected Wounds Reveal Possibilities for New Treatment Strategies. Antibiotics (Basel) 2020; 9:antibiotics9070396. [PMID: 32664205 PMCID: PMC7400121 DOI: 10.3390/antibiotics9070396] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/04/2020] [Accepted: 07/07/2020] [Indexed: 12/26/2022] Open
Abstract
Normal wound healing occurs in three phases—the inflammatory, the proliferative, and the remodeling phase. Chronic wounds are, for unknown reasons, arrested in the inflammatory phase. Bacterial biofilms may cause chronicity by arresting healing in the inflammatory state by mechanisms not fully understood. Pseudomonas aeruginosa, a common wound pathogen with remarkable abilities in avoiding host defense and developing microbial resistance by biofilm formation, is detrimental to wound healing in clinical studies. The host response towards P. aeruginosa biofilm-infection in chronic wounds and impact on wound healing is discussed and compared to our own results in a chronic murine wound model. The impact of P. aeruginosa biofilms can be described by determining alterations in the inflammatory response, growth factor profile, and count of leukocytes in blood. P. aeruginosa biofilms are capable of reducing the host response to the infection, despite a continuously sustained inflammatory reaction and resulting local tissue damage. A recent observation of in vivo synergism between immunomodulatory and antimicrobial S100A8/A9 and ciprofloxacin suggests its possible future therapeutic potential.
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Li S, Mohamedi AH, Senkowsky J, Nair A, Tang L. Imaging in Chronic Wound Diagnostics. Adv Wound Care (New Rochelle) 2020; 9:245-263. [PMID: 32226649 PMCID: PMC7099416 DOI: 10.1089/wound.2019.0967] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 05/14/2019] [Indexed: 01/18/2023] Open
Abstract
Significance: Chronic wounds affect millions of patients worldwide, placing a huge burden on health care resources. Although significant progress has been made in the development of wound treatments, very few advances have been made in wound diagnosis. Recent Advances: Standard imaging methods like computed tomography, single-photon emission computed tomography, magnetic resonance imaging, terahertz imaging, and ultrasound imaging have been widely employed in wound diagnostics. A number of noninvasive optical imaging modalities like optical coherence tomography, near-infrared spectroscopy, laser Doppler imaging, spatial frequency domain imaging, digital camera imaging, and thermal and fluorescence imaging have emerged over the years. Critical Issues: While standard diagnostic wound imaging modalities provide valuable information, they cannot account for dynamic changes in the wound environment. In addition, they lack the capability to predict the healing outcome. Thus, there remains a pressing need for more efficient methods that can not only indicate the current state of the wound but also help determine whether the wound is on track to heal normally. Future Directions: Many imaging probes have been fabricated and shown to provide real-time assessment of tissue microenvironment and inflammatory responses in vivo. These probes have been demonstrated to noninvasively detect various changes in the wound environment, which include tissue pH, reactive oxygen species, fibrin deposition, matrix metalloproteinase production, and macrophage accumulation. This review summarizes the creation of these probes and their potential implications in wound monitoring.
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Affiliation(s)
- Shuxin Li
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas
| | - Ali H. Mohamedi
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas
| | | | | | - Liping Tang
- Department of Bioengineering, University of Texas at Arlington, Arlington, Texas
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Solaimuthu A, Vijayan AN, Murali P, Korrapati PS. Nano-biosensors and their relevance in tissue engineering. CURRENT OPINION IN BIOMEDICAL ENGINEERING 2020. [DOI: 10.1016/j.cobme.2019.12.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Roussakis E, Cascales JP, Marks HL, Li X, Grinstaff M, Evans CL. Humidity‐Insensitive Tissue Oxygen Tension Sensing for Wearable Devices
†. Photochem Photobiol 2020; 96:373-379. [DOI: 10.1111/php.13198] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 10/22/2019] [Accepted: 11/16/2019] [Indexed: 12/25/2022]
Affiliation(s)
- Emmanuel Roussakis
- Wellman Center for Photomedicine Massachusetts General Hospital Harvard Medical School Boston MA
| | - Juan Pedro Cascales
- Wellman Center for Photomedicine Massachusetts General Hospital Harvard Medical School Boston MA
| | - Haley L. Marks
- Wellman Center for Photomedicine Massachusetts General Hospital Harvard Medical School Boston MA
| | - Xiaolei Li
- Wellman Center for Photomedicine Massachusetts General Hospital Harvard Medical School Boston MA
| | - Mark Grinstaff
- Departments of Biomedical Engineering and Chemistry Boston University Boston MA
| | - Conor L. Evans
- Wellman Center for Photomedicine Massachusetts General Hospital Harvard Medical School Boston MA
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35
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Nanofibrous membranes as smart wound dressings that release antibiotics when an injury is infected. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2019.124313] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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36
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Ji S, Zhou S, Zhang X, Li C, Chen W, Jiang X. Oxygen-Sensing Probes and Bandage for Optical Detection of Inflammation. ACS APPLIED BIO MATERIALS 2019; 2:5110-5117. [DOI: 10.1021/acsabm.9b00775] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Shilu Ji
- MOE Key Laboratory of High Performance Polymer Materials and Technology, Department of Polymer Science & Engineering, College of Chemistry & Chemical Engineering, and Jiangsu Key Laboratory for Nanotechnology, Nanjing University, Nanjing 210093, P. R. China
| | - Sensen Zhou
- MOE Key Laboratory of High Performance Polymer Materials and Technology, Department of Polymer Science & Engineering, College of Chemistry & Chemical Engineering, and Jiangsu Key Laboratory for Nanotechnology, Nanjing University, Nanjing 210093, P. R. China
| | - Xiaoke Zhang
- MOE Key Laboratory of High Performance Polymer Materials and Technology, Department of Polymer Science & Engineering, College of Chemistry & Chemical Engineering, and Jiangsu Key Laboratory for Nanotechnology, Nanjing University, Nanjing 210093, P. R. China
| | - Cheng Li
- MOE Key Laboratory of High Performance Polymer Materials and Technology, Department of Polymer Science & Engineering, College of Chemistry & Chemical Engineering, and Jiangsu Key Laboratory for Nanotechnology, Nanjing University, Nanjing 210093, P. R. China
| | - Weizhi Chen
- MOE Key Laboratory of High Performance Polymer Materials and Technology, Department of Polymer Science & Engineering, College of Chemistry & Chemical Engineering, and Jiangsu Key Laboratory for Nanotechnology, Nanjing University, Nanjing 210093, P. R. China
| | - Xiqun Jiang
- MOE Key Laboratory of High Performance Polymer Materials and Technology, Department of Polymer Science & Engineering, College of Chemistry & Chemical Engineering, and Jiangsu Key Laboratory for Nanotechnology, Nanjing University, Nanjing 210093, P. R. China
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Auerswald S, Schreml S, Meier R, Blancke Soares A, Niyazi M, Marschner S, Belka C, Canis M, Haubner F. Wound monitoring of pH and oxygen in patients after radiation therapy. Radiat Oncol 2019; 14:199. [PMID: 31711506 PMCID: PMC6849199 DOI: 10.1186/s13014-019-1413-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Accepted: 10/30/2019] [Indexed: 12/22/2022] Open
Abstract
OBJECTIVES Postradiogenic wound healing disorders are an important clinical problem. While a variety of treatment modalities are available, there is no strategy to objectively judge treatment success. The aim of this study was to evaluate a 2D luminescence imaging system for pH and oxygen in non-healing wounds after radiotherapy. METHODS Luminescence 2D imaging was performed with the VisiSens (Presens, Regensburg, Germany) 2D imaging systems A1 and A2 for oxygen and pH, respectively. Biocompatible planar luminescent sensor foils were applied to non-irradiated and irradiated skin as well as to radiogenic wounds of five patients and the pH and the oxygen saturation was determined. RESULTS pH measurements showed significant differences between non-irradiated skin (6.46 ± 0.18) and irradiated skin (6.96 ± 0.26). Radiogenic wounds exhibited the highest pH values (7.53 ± 0.26). Oxygen measurements revealed a mean oxygen saturation of non-irradiated skin of 6.19 ± 0.83 mmHg. The highest value of oxygen saturation (28.4 ± 2.4 mmHg) was found on irradiated skin while irradiated wounds had a poor oxygen saturation (9.4 ± 2.2 mmHg) (mean ± s.e.m.). CONCLUSION We found that routine measurement of pH and pO2 in patients could be easily integrated into the clinical routine. The results of the measurements show unfavorable pH and oxygen saturation conditions for wound healing in irradiated wounds. Interestingly, irradiated wounds exhibit a more pronounced hypoxia than irradiated skin which is reflected by an altered pH and pO2 compared to unirradiated skin, which has the potential to serve as a prognostic marker in the future. In addition to the objectification of the treatment success of postradiogenic wound healing disorders, the extent of skin toxicity could already be predicted during radiotherapy with this method.
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Affiliation(s)
- Steffen Auerswald
- Department of Otorhinolaryngology, University Medical Center Regensburg, Regensburg, Germany
| | - Stephan Schreml
- Department of Dermatology, University Medical Center Regensburg, Regensburg, Germany
| | | | - Alexandra Blancke Soares
- Department of Otorhinolaryngology, University Medical Center Munich, Klinikum Großhadern, Marchioninistr. 15, 81377, Munich, Germany
| | - Maximilian Niyazi
- Department of Radiation Oncology, University Medical Center Munich, Munich, Germany
| | - Sebastian Marschner
- German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Claus Belka
- Department of Radiation Oncology, University Medical Center Munich, Munich, Germany
| | - Martin Canis
- Department of Otorhinolaryngology, University Medical Center Munich, Klinikum Großhadern, Marchioninistr. 15, 81377, Munich, Germany
| | - Frank Haubner
- Department of Otorhinolaryngology, University Medical Center Munich, Klinikum Großhadern, Marchioninistr. 15, 81377, Munich, Germany.
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Pedersen SF, Counillon L. The SLC9A-C Mammalian Na +/H + Exchanger Family: Molecules, Mechanisms, and Physiology. Physiol Rev 2019; 99:2015-2113. [PMID: 31507243 DOI: 10.1152/physrev.00028.2018] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Na+/H+ exchangers play pivotal roles in the control of cell and tissue pH by mediating the electroneutral exchange of Na+ and H+ across cellular membranes. They belong to an ancient family of highly evolutionarily conserved proteins, and they play essential physiological roles in all phyla. In this review, we focus on the mammalian Na+/H+ exchangers (NHEs), the solute carrier (SLC) 9 family. This family of electroneutral transporters constitutes three branches: SLC9A, -B, and -C. Within these, each isoform exhibits distinct tissue expression profiles, regulation, and physiological roles. Some of these transporters are highly studied, with hundreds of original articles, and some are still only rudimentarily understood. In this review, we present and discuss the pioneering original work as well as the current state-of-the-art research on mammalian NHEs. We aim to provide the reader with a comprehensive view of core knowledge and recent insights into each family member, from gene organization over protein structure and regulation to physiological and pathophysiological roles. Particular attention is given to the integrated physiology of NHEs in the main organ systems. We provide several novel analyses and useful overviews, and we pinpoint main remaining enigmas, which we hope will inspire novel research on these highly versatile proteins.
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Affiliation(s)
- S F Pedersen
- Section for Cell Biology and Physiology, Department of Biology, University of Copenhagen, Copenhagen, Denmark; and Université Côte d'Azur, CNRS, Laboratoire de Physiomédecine Moléculaire, LP2M, France, and Laboratories of Excellence Ion Channel Science and Therapeutics, Nice, France
| | - L Counillon
- Section for Cell Biology and Physiology, Department of Biology, University of Copenhagen, Copenhagen, Denmark; and Université Côte d'Azur, CNRS, Laboratoire de Physiomédecine Moléculaire, LP2M, France, and Laboratories of Excellence Ion Channel Science and Therapeutics, Nice, France
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Haalboom M. Chronic Wounds: Innovations in Diagnostics and Therapeutics. Curr Med Chem 2019; 25:5772-5781. [PMID: 28699502 DOI: 10.2174/0929867324666170710120556] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 06/10/2017] [Accepted: 06/10/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND A major global health issue is the existence of chronic wounds. Appropriate diagnosis and treatment is essential to promote wound healing and prevent further complications. Traditional methods for treatment and diagnosis of chronic wounds have shown to be of limited effectiveness. Therefore, there is a need for the development of diagnostic and therapeutic innovations in chronic wound care. OBJECTIVE This mini-review aims to provide insight in the current knowledge of the wound healing process and the deficiencies encountered in chronic wounds, which provides a basis for the development of innovations in chronic wound care. Furthermore, promising diagnostic and therapeutic innovations will be highlighted. METHODS Literature was searched for recent articles (=<10 years) describing the current knowledge about the wound healing process and chronic wounds. The most promising diagnostic and therapeutic innovations were gathered from articles published in the past 5 years. RESULTS/CONCLUSION Wound healing is a well-organized process consisting of four phases: coagulation, inflammation, proliferation and wound remodelling. Chronic wounds often stagnate in the inflammatory phase and/or experience an impaired proliferative phase. This mini-review has demonstrated that increased knowledge about the processes involved in wound healing has paved the way for the development of new diagnostic tools and treatments for chronic wounds. Increased knowledge about bacterial invasion and infection in has encouraged researchers to develop diagnostic tools to help clinicians detect these phenomena appropriately and in time. Other researchers have shown that they are able to design/extract biochemical compounds that intervene in the disrupted healing processes in chronic wounds.
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Affiliation(s)
- Marieke Haalboom
- Department of Vascular Surgery/Medical School Twente, Medisch Spectrum Twente, Enschede, Netherlands
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40
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How medical engineering has changed our understanding of chronic wounds and future prospects. Med Eng Phys 2019; 72:13-18. [DOI: 10.1016/j.medengphy.2019.08.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 08/27/2019] [Indexed: 12/26/2022]
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41
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Biswas A, Shukla A, Maiti P. Biomaterials for Interfacing Cell Imaging and Drug Delivery: An Overview. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:12285-12305. [PMID: 31125238 DOI: 10.1021/acs.langmuir.9b00419] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This feature article provides an overview of different kinds of futuristic biomaterials which have the potential to be used for fluorescent imaging and drug delivery, often simultaneously. The synthesis route or preparation process, fluorescence property, release profile, biocompatibility, bioimaging, and mechanistic approaches are vividly discussed. These include bioimaging with fluorescently doped quantum dots, mesoporous silica, noble metals, metal clusters, hydrophilic/hydrophobic polymers, semiconducting polymer dots, carbon/graphene dots, dendrimers, fluorescent proteins, and other nanobiomaterials. Another section discusses the controlled and targeted drug, gene, or biologically active material delivery using various vehicles such as micelles, 2D nanomaterials, organic nanoparticles, polymeric nanohybrids, and chemically modified polymers. In the last section, we discuss biomaterials, which can deliver biologically active molecules, and imaging the cell/tissue.
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Affiliation(s)
- Arpan Biswas
- School of Materials Science and Technology , Indian Institute of Technology (Banaras Hindu University) , Varanasi 221 005 , India
| | - Aparna Shukla
- School of Materials Science and Technology , Indian Institute of Technology (Banaras Hindu University) , Varanasi 221 005 , India
| | - Pralay Maiti
- School of Materials Science and Technology , Indian Institute of Technology (Banaras Hindu University) , Varanasi 221 005 , India
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Rao Z, Pace S, Jordan PM, Bilancia R, Troisi F, Börner F, Andreas N, Kamradt T, Menche D, Rossi A, Serhan CN, Gerstmeier J, Werz O. Vacuolar (H +)-ATPase Critically Regulates Specialized Proresolving Mediator Pathways in Human M2-like Monocyte-Derived Macrophages and Has a Crucial Role in Resolution of Inflammation. THE JOURNAL OF IMMUNOLOGY 2019; 203:1031-1043. [PMID: 31300512 DOI: 10.4049/jimmunol.1900236] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 06/16/2019] [Indexed: 12/21/2022]
Abstract
Alternative (M2)-polarized macrophages possess high capacities to produce specialized proresolving mediators (SPM; i.e., resolvins, protectins, and maresins) that play key roles in resolution of inflammation and tissue regeneration. Vacuolar (H+)-ATPase (V-ATPase) is fundamental in inflammatory cytokine trafficking and secretion and was implicated in macrophage polarization toward the M2 phenotype, but its role in SPM production and lipid mediator biosynthesis in general is elusive. In this study, we show that V-ATPase activity is required for the induction of SPM-biosynthetic pathways in human M2-like monocyte-derived macrophages (MDM) and consequently for resolution of inflammation. Blockade of V-ATPase by archazolid during IL-4-induced human M2 polarization abrogated 15-lipoxygenase-1 expression and prevented the related biosynthesis of SPM in response to pathogenic Escherichia coli, assessed by targeted liquid chromatography-tandem mass spectrometry-based metabololipidomics. In classically activated proinflammatory M1-like MDM, however, the biosynthetic machinery for lipid mediator formation was independent of V-ATPase activity. Targeting V-ATPase in M2 influenced neither IL-4-triggered JAK/STAT6 nor the mTOR complex 1 signaling but strongly suppressed the ERK-1/2 pathway. Accordingly, the ERK-1/2 pathway contributes to 15-lipoxygenase-1 expression and SPM formation in M2-like MDM. Targeting V-ATPase in vivo delayed resolution of zymosan-induced murine peritonitis accompanied by decreased SPM levels without affecting proinflammatory leukotrienes or PGs. Together, our data propose that V-ATPase regulates 15-lipoxygenase-1 expression and consequent SPM biosynthesis involving ERK-1/2 during M2 polarization, implying a crucial role for V-ATPase in the resolution of inflammation.
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Affiliation(s)
- Zhigang Rao
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Simona Pace
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Paul M Jordan
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Rossella Bilancia
- Department of Pharmacy, School of Medicine, University of Naples Federico II, 80131 Naples, Italy
| | - Fabiana Troisi
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Friedemann Börner
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich-Schiller-University Jena, 07743 Jena, Germany
| | - Nico Andreas
- Institute of Immunology, Jena University Hospital, 07743 Jena, Germany
| | - Thomas Kamradt
- Institute of Immunology, Jena University Hospital, 07743 Jena, Germany
| | - Dirk Menche
- Kekulé-Institut für Organische Chemie und Biochemie der Rheinischen Friedrich-Wilhelms-Universität Bonn, D-53121 Bonn, Germany; and
| | - Antonietta Rossi
- Department of Pharmacy, School of Medicine, University of Naples Federico II, 80131 Naples, Italy
| | - Charles N Serhan
- Center for Experimental Therapeutics and Reperfusion Injury, Department of Anesthesiology, Perioperative, and Pain Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115
| | - Jana Gerstmeier
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich-Schiller-University Jena, 07743 Jena, Germany;
| | - Oliver Werz
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich-Schiller-University Jena, 07743 Jena, Germany;
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Shamsipur M, Barati A, Nematifar Z. Fluorescent pH nanosensors: Design strategies and applications. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2019. [DOI: 10.1016/j.jphotochemrev.2019.03.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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44
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Reinders Y, Meier RJ, Liebsch G, Pohl F, Schreml S, Prantl L, Haubner F. Imaging of pH and pO 2 gives insight in molecular processes of irradiated cells. Exp Dermatol 2019; 28:628-630. [PMID: 30776155 DOI: 10.1111/exd.13905] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 01/21/2019] [Accepted: 01/30/2019] [Indexed: 02/04/2023]
Abstract
One of the major challenges in radiation therapy is the interference with tissue repair processes due to hypoxic characteristics and pH dysregulation. In this study, we present dual imaging of pH and oxygenation in vitro based on luminescent biocompatible sensor foils that allow studying the effects of irradiation on different cell types in culture. Different sensitivities of fibroblast and oral squamous carcinoma cells were observed by complementing oxygen and pH differences with proliferation assays. This study highlights especially the distinct role of oxygen after irradiation and the difference in proliferation processes of irradiated normal dermal cells in contrast to irradiated tumor cells.
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Affiliation(s)
- Yvonne Reinders
- Department of Otorhinolaryngology, University Hospital Regensburg, Regensburg, Germany.,Department of Plastic, Aesthetic, Hand & Reconstructive Surgery, University Hospital Regensburg, Regensburg, Germany.,Leibniz-Institut für Analytische Wissenschaften - ISAS - e.V., Dortmund, Germany
| | | | | | - Fabian Pohl
- Department of Radiotherapy, University Hospital Regensburg, Regensburg, Germany
| | - Stephan Schreml
- Department of Dermatology, University Hospital Regensburg, Regensburg, Germany
| | - Lukas Prantl
- Department of Plastic, Aesthetic, Hand & Reconstructive Surgery, University Hospital Regensburg, Regensburg, Germany
| | - Frank Haubner
- Department of Otorhinolaryngology, Ludwig-Maximilians-University Munich, Munich, Germany
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45
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Lim CJ, Lee S, Kim JH, Kil HJ, Kim YC, Park JW. Wearable, Luminescent Oxygen Sensor for Transcutaneous Oxygen Monitoring. ACS APPLIED MATERIALS & INTERFACES 2018; 10:41026-41034. [PMID: 30404434 DOI: 10.1021/acsami.8b13276] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We present a new concept for a wearable oxygen (O2) sensor for transcutaneous O2 pressure (tcpO2) monitoring by combining the technologies of luminescent gas sensing and wearable devices. O2 monitoring has been exhaustively studied given its central role in diagnosing various diseases. The ability to quantify the physiological distribution and real-time dynamics of O2 from the subcellular to the macroscopic level is required to fully understand mechanisms associated with both normal physiological and pathological conditions. Despite its profound biological and clinical importance, few effective methods exist for noninvasively quantifying O2 in a physiological setting. The wearable sensor developed here consists of three components: a luminescent sensing film attached onto skin by a carbon tape, an organic light-emitting diode (OLED) as a light source, and an organic photodiode (OPD) as a light detector. All the components are solution-processable and integrated on a plane in a bandage-like configuration. To verify the performance, tcpO2 variations by pressure-induced occlusion were measured in the lower arm and a thumb by the wearable sensor, and the results were comparable to those measured by a commercial instrument. In addition to its flexibility, other features of this sensor render it a potential low-cost solution for the simultaneous monitoring of tcpO2 in any part of a body.
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Affiliation(s)
- Chang-Jin Lim
- Department of Materials Science and Engineering , Yonsei University , Seoul 03722 , Korea
| | - Soyeon Lee
- Department of Materials Science and Engineering , Yonsei University , Seoul 03722 , Korea
| | - Jin-Hoon Kim
- Department of Materials Science and Engineering , Yonsei University , Seoul 03722 , Korea
| | - Hye-Jun Kil
- Biomedical Research Institute , Korea Institute of Science and Technology , Seoul 02792 , Korea
| | - Yu-Chan Kim
- Biomedical Research Institute , Korea Institute of Science and Technology , Seoul 02792 , Korea
| | - Jin-Woo Park
- Department of Materials Science and Engineering , Yonsei University , Seoul 03722 , Korea
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46
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Challenges for successful implantation of biofuel cells. Bioelectrochemistry 2018; 124:57-72. [DOI: 10.1016/j.bioelechem.2018.05.011] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2017] [Revised: 05/11/2018] [Accepted: 05/25/2018] [Indexed: 01/09/2023]
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47
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DeRosa CA, Daly ML, Kerr C, Fraser CL. Methoxy‐Substituted Difluoroboron Benzoylacetonate Complexes with Color‐Tunable Phosphorescence. CHEMPHOTOCHEM 2018. [DOI: 10.1002/cptc.201800156] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
| | - Margaret L. Daly
- Department of Chemistry University of Virginia Charlottesville, VA 22904 USA
| | - Caroline Kerr
- Department of Chemistry University of Virginia Charlottesville, VA 22904 USA
| | - Cassandra L. Fraser
- Department of Chemistry University of Virginia Charlottesville, VA 22904 USA
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48
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Pal A, Goswami D, Cuellar HE, Castro B, Kuang S, Martinez RV. Early detection and monitoring of chronic wounds using low-cost, omniphobic paper-based smart bandages. Biosens Bioelectron 2018; 117:696-705. [DOI: 10.1016/j.bios.2018.06.060] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 06/06/2018] [Accepted: 06/27/2018] [Indexed: 12/18/2022]
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49
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Edwards JV, Prevost NT, Santiago M, von Hoven T, Condon BD, Qureshi H, Yager DR. Hydrogen Peroxide Generation of Copper/Ascorbate Formulations on Cotton: Effect on Antibacterial and Fibroblast Activity for Wound Healing Application. Molecules 2018; 23:E2399. [PMID: 30235850 PMCID: PMC6225216 DOI: 10.3390/molecules23092399] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 09/10/2018] [Accepted: 09/13/2018] [Indexed: 11/24/2022] Open
Abstract
Greige cotton (unbleached cotton) is an intact plant fiber that retains much of the outer cotton fiber layers. These layers contain pectin, peroxidases, and trace metals that are associated with hydrogen peroxide (H₂O₂) generation during cotton fiber development. When greige cotton is subjected to a nonwoven hydroentanglement process, components of the outer cotton fiber layers are retained. When hydrated, this fabric can generate H₂O₂ (5⁻50 micromolar). This range has been characterized as inducing accelerated wound healing associated with enhanced cell signaling and the proliferation of cells vital to wound restoration. On the other hand, H₂O₂ levels above 50 micromolar have been associated with bacteriostatic activity. Here, we report the preparation and hydrogen peroxide activity of copper/ascorbate formulations, both as adsorbed and in situ synthesized analogs on cotton. The cooper/ascorbate-cotton formulations were designed with the goal of modulating hydrogen peroxide levels within functional ranges beneficial to wound healing. The cotton/copper formulation analogs were prepared on nonwoven unbleached cotton and characterized with cotton impregnation titers of 3⁻14 mg copper per gram of cotton. The copper/ascorbate cotton analog formulations were characterized spectroscopically, and the copper titer was quantified with ICP analysis and probed for peroxide production through assessment with Amplex Red. All analogs demonstrated antibacterial activity. Notably, the treatment of unbleached cotton with low levels of ascorbate (~2 mg/g cotton) resulted in a 99 percent reduction in Klebsiella pneumoniae and Staphylococcus aureus. In situ synthesized copper/ascorbate nanoparticles retained activity and did not leach out upon prolonged suspension in an aqueous environment. An assessment of H₂O₂ effects on fibroblast proliferation are discussed in light of the copper/cotton analogs and wound healing.
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Affiliation(s)
- J Vincent Edwards
- Southern Regional Research Center, USDA-ARS, New Orleans, LA 70120, USA.
| | | | - Michael Santiago
- Southern Regional Research Center, USDA-ARS, New Orleans, LA 70120, USA.
| | - Terri von Hoven
- Southern Regional Research Center, USDA-ARS, New Orleans, LA 70120, USA.
| | - Brian D Condon
- Southern Regional Research Center, USDA-ARS, New Orleans, LA 70120, USA.
| | - Huzaifah Qureshi
- Plastic and Reconstructive Surgery, Virginia Commonwealth University, Richmond, VA 23111, USA.
| | - Dorne R Yager
- Plastic and Reconstructive Surgery, Virginia Commonwealth University, Richmond, VA 23111, USA.
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50
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Kmiec MM, Hou H, Lakshmi Kuppusamy M, Drews TM, Prabhat AM, Petryakov SV, Demidenko E, Schaner PE, Buckey JC, Blank A, Kuppusamy P. Transcutaneous oxygen measurement in humans using a paramagnetic skin adhesive film. Magn Reson Med 2018; 81:781-794. [PMID: 30277275 DOI: 10.1002/mrm.27445] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 06/11/2018] [Accepted: 06/11/2018] [Indexed: 01/20/2023]
Abstract
PURPOSE Transcutaneous oxygen tension (TcpO2 ) provides information about blood perfusion in the tissue immediately below the skin. These data are valuable in assessing wound healing problems, diagnosing peripheral vascular/arterial insufficiency, and predicting disease progression or the response to therapy. Currently, TcpO2 is primarily measured using electrochemical skin sensors, which consume oxygen and are prone to calibration errors. The goal of the present study was to develop a reliable method for TcpO2 measurement in human subjects. METHODS We have developed a novel TcpO2 oximetry method based on electron paramagnetic resonance (EPR) principles with an oxygen-sensing skin adhesive film, named the superficial perfusion oxygen tension (SPOT) chip. The SPOT chip is a 3-mm diameter, 60-μm thick circular film composed of a stable paramagnetic oxygen sensor. The chip is covered with an oxygen-barrier material on one side and secured on the skin by a medical adhesive transfer tape to ensure that only the oxygen that diffuses through the skin surface is measured. The method quantifies TcpO2 through the linewidth of the EPR spectrum. RESULTS Repeated measurements using a cohort of 10 healthy human subjects showed that the TcpO2 measurements were robust, reliable, and reproducible. The TcpO2 values ranged from 7.8 ± 0.8 to 22.0 ± 1.0 mmHg in the volar forearm skin (N = 29) and 8.1 ± 0.3 to 23.4 ± 1.3 mmHg in the foot (N = 86). CONCLUSIONS The results demonstrated that the SPOT chip can measure TcpO2 reliably and repeatedly under ambient conditions. The SPOT chip method could potentially be used to monitor TcpO2 in the clinic.
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Affiliation(s)
- Maciej M Kmiec
- Department of Radiology, Geisel School of Medicine, Dartmouth College, Lebanon, New Hampshire
| | - Huagang Hou
- Department of Radiology, Geisel School of Medicine, Dartmouth College, Lebanon, New Hampshire
| | - M Lakshmi Kuppusamy
- Department of Radiology, Geisel School of Medicine, Dartmouth College, Lebanon, New Hampshire
| | - Thomas M Drews
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts
| | - Anjali M Prabhat
- Department of Radiology, Geisel School of Medicine, Dartmouth College, Lebanon, New Hampshire
| | - Sergey V Petryakov
- Department of Radiology, Geisel School of Medicine, Dartmouth College, Lebanon, New Hampshire
| | - Eugene Demidenko
- Department of Biomedical Data Sciences, Geisel School of Medicine, Dartmouth College, Lebanon, New Hampshire
| | - Philip E Schaner
- Department of Medicine, Geisel School of Medicine, Dartmouth College, Lebanon, New Hampshire
| | - Jay C Buckey
- Department of Medicine, Geisel School of Medicine, Dartmouth College, Lebanon, New Hampshire
| | - Aharon Blank
- Schulich Faculty of Chemistry Technion, Israel Institute of Technology, Haifa, Israel
| | - Periannan Kuppusamy
- Department of Radiology, Geisel School of Medicine, Dartmouth College, Lebanon, New Hampshire.,Department of Chemistry, University of Massachusetts, Amherst, Massachusetts
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