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Costa L, Carvalho AF, Fernandes AJS, Campos T, Dourado N, Costa FM, Gama M. Bacterial nanocellulose as a simple and tailorable platform for controlled drug release. Int J Pharm 2024; 663:124560. [PMID: 39127171 DOI: 10.1016/j.ijpharm.2024.124560] [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: 05/10/2024] [Revised: 07/31/2024] [Accepted: 08/04/2024] [Indexed: 08/12/2024]
Abstract
In this study we present a proof of concept of a simple and straightforward approach for the development of a Bacterial Nanocellulose drug delivery system (BNC-DDS), envisioning the local delivery of immunomodulatory drugs to prevent foreign body reaction (FBR). Inspired by the self-adhesion behavior of BNC upon drying, we proposed a BNC laminate entrapping commercial crystalline drugs (dexamethasone-DEX and GW2580) in a sandwich system. The stability of the bilayer BNC-DDS was evidenced by the high interfacial energy of the bilayer films, 150 ± 11 and 88 ± 7 J/m2 respectively for 2 mm- and 10-mm thick films, corresponding to an increase of 7.5 and 4.4-fold comparatively to commercial tissue adhesives. In vitro release experiments unveiled the tunability of the bilayer BNC-DDS by showing extended drug release when thicker BNC membranes were used (from 16 to 47 days and from 35 to 132 days, for the bilayer-BNC entrapping DEX and GW2580, respectively). Mathematical modeling of the release data pointed to a diffusion-driven mechanism with non-fickian behavior. Overall, the results have demonstrated the potential of this simple approach for developing BNC-drug depots for localized and sustained release of therapeutic agents over adjustable timeframes.
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Affiliation(s)
- Lígia Costa
- CEB - Centre of Biological Engineering, University of Minho, Campus Gualtar, Braga, Portugal; LABBELS -Associate Laboratory, Braga, Guimarães, Portugal
| | - Alexandre F Carvalho
- i3N and Physics Department, University of Aveiro Campus of Santiago, 3810-193 Aveiro, Portugal
| | - António J S Fernandes
- i3N and Physics Department, University of Aveiro Campus of Santiago, 3810-193 Aveiro, Portugal
| | - Teresa Campos
- LABBELS -Associate Laboratory, Braga, Guimarães, Portugal; CMEMS-UMINHO, Universidade do Minho, 4800-058 Guimarães, Portugal
| | - Nuno Dourado
- LABBELS -Associate Laboratory, Braga, Guimarães, Portugal; CMEMS-UMINHO, Universidade do Minho, 4800-058 Guimarães, Portugal
| | - Florinda M Costa
- i3N and Physics Department, University of Aveiro Campus of Santiago, 3810-193 Aveiro, Portugal
| | - Miguel Gama
- CEB - Centre of Biological Engineering, University of Minho, Campus Gualtar, Braga, Portugal; LABBELS -Associate Laboratory, Braga, Guimarães, Portugal.
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2
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Bernardelli de Mattos I, Tuca AC, Kukla F, Lemarchand T, Markovic D, Kamolz LP, Funk M. A Highly Standardized Pre-Clinical Porcine Wound Healing Model Powered by Semi-Automated Histological Analysis. Biomedicines 2024; 12:1697. [PMID: 39200162 PMCID: PMC11351733 DOI: 10.3390/biomedicines12081697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2024] [Revised: 07/10/2024] [Accepted: 07/25/2024] [Indexed: 09/02/2024] Open
Abstract
The wound-healing process is a physiological response that begins after a disruption to the integrity of tissues present in the skin. To understand the intricacies involved in this process, many groups have tried to develop different in vitro models; however, the lack of a systemic response has, until this day, been the major barrier to the establishment of these models as the main study platform. Therefore, in vivo models are still the most common system for studying healing responses following different treatments, especially porcine models, which share several morphological similarities to the human skin. In this work, we developed a porcine excisional wound model and used semi-automated software as a strategy to generate quantitative morphometric results of healing responses by specific tissues and compartments. Our aim was to extract the most information from the model while producing reliable, reproducible, and standardized results. In order to achieve this, we established a 7-day treatment using a bacterial cellulose dressing as our standard for all the analyzed wounds. The thickness of the residual dermis under the wound (DUtW) bed was shown to influence the healing outcome, especially for the regeneration of epidermal tissue, including the wound closure rate. The analysis of the DUtW throughout the entire dorsal region of the animals opened up the possibility of establishing a map that will facilitate the experimental design of future works, increasing their standardization and reproducibility and ultimately reducing the number of animals needed. Thus, the developed model, together with the automated morphometric analysis approach used, offers the possibility to generate robust quantitative results with a rapid turnaround time while allowing the study of multiple extra morphometric parameters, creating a more holistic analysis.
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Affiliation(s)
- Ives Bernardelli de Mattos
- Department of Tissue Engineering & Regenerative Medicine (TERM), University Hospital Würzburg, 97080 Würzburg, Germany;
- EVOMEDIS GmbH, 8036 Graz, Austria;
| | - Alexandru C. Tuca
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, 8036 Graz, Austria;
| | - Fabian Kukla
- TPL Path Labs GmbH, A Stagebio Company, 79111 Freiburg, Germany; (F.K.); (T.L.)
| | - Thomas Lemarchand
- TPL Path Labs GmbH, A Stagebio Company, 79111 Freiburg, Germany; (F.K.); (T.L.)
| | - Danijel Markovic
- Department of Biomedical Research, Medical University of Graz, 8036 Graz, Austria;
| | - Lars P. Kamolz
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, 8036 Graz, Austria;
- Joanneum Research Forschungsgesellschaft mbH, COREMED, 8036 Graz, Austria
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3
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Leong MY, Kong YL, Harun MY, Looi CY, Wong WF. Current advances of nanocellulose application in biomedical field. Carbohydr Res 2023; 532:108899. [PMID: 37478689 DOI: 10.1016/j.carres.2023.108899] [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: 10/03/2022] [Revised: 07/10/2023] [Accepted: 07/11/2023] [Indexed: 07/23/2023]
Abstract
Nanocellulose (NC) is a natural fiber that can be extracted in fibrils or crystals form from different natural sources, including plants, bacteria, and algae. In recent years, nanocellulose has emerged as a sustainable biomaterial for various medicinal applications including drug delivery systems, wound healing, tissue engineering, and antimicrobial treatment due to its biocompatibility, low cytotoxicity, and exceptional water holding capacity for cell immobilization. Many antimicrobial products can be produced due to the chemical functionality of nanocellulose, such disposable antibacterial smart masks for healthcare use. This article discusses comprehensively three types of nanocellulose: cellulose nanocrystals (CNC), cellulose nanofibrils (CNF), and bacterial nanocellulose (BNC) in view of their structural and functional properties, extraction methods, and the distinctive biomedical applications based on the recently published work. On top of that, the biosafety profile and the future perspectives of nanocellulose-based biomaterials have been further discussed in this review.
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Affiliation(s)
- M Y Leong
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University Lakeside Campus, 47500, Subang Jaya, Selangor Darul Ehsan, Malaysia
| | - Y L Kong
- Department of Engineering and Applied Sciences, American Degree Program, Taylor's University Lakeside Campus, 47500, Subang Jaya, Selangor Darul Ehsan, Malaysia.
| | - M Y Harun
- Department of Chemical and Environmental Engineering, Faculty of Engineering, Universiti Putra Malaysia, 43400, UPM Serdang, Selangor Darul Ehsan, Malaysia
| | - C Y Looi
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University Lakeside Campus, 47500, Subang Jaya, Selangor Darul Ehsan, Malaysia
| | - W F Wong
- Department of Medical Microbiology, Faculty of Medicine, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
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4
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Abdelhamid HN. An introductory review on advanced multifunctional materials. Heliyon 2023; 9:e18060. [PMID: 37496901 PMCID: PMC10366438 DOI: 10.1016/j.heliyon.2023.e18060] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 07/04/2023] [Accepted: 07/05/2023] [Indexed: 07/28/2023] Open
Abstract
This review summarizes the applications of some of the advanced materials. It included the synthesis of several nanoparticles such as metal oxide nanoparticles (e.g., Fe3O4, ZnO, ZrOSO4, MoO3-x, CuO, AgFeO2, Co3O4, CeO2, SiO2, and CuFeO2); metal hydroxide nanosheets (e.g., Zn5(OH)8(NO3)2·2H2O, Zn(OH)(NO3)·H2O, and Zn5(OH)8(NO3)2); metallic nanoparticles (Ag, Au, Pd, and Pt); carbon-based nanomaterials (graphene, graphene oxide (GO), graphitic carbon nitride (g-C3N4), and carbon dots (CDs)); biopolymers (cellulose, nanocellulose, TEMPO-oxidized cellulose nanofibers (TOCNFs), and chitosan); organic polymers (e.g. covalent-organic frameworks (COFs)); and hybrid materials (e.g. metal-organic frameworks (MOFs)). Most of these materials were applied in several fields such as environmental-based technologies (e.g., water remediation, air purification, gas storage), energy (production of hydrogen, dimethyl ether, solar cells, and supercapacitors), and biomedical sectors (sensing, biosensing, cancer therapy, and drug delivery). They can be used as efficient adsorbents and catalysts to remove emerging contaminants e.g., inorganic (i.e., heavy metals) and organic (e.g., dyes, antibiotics, pesticides, and oils in water via adsorption. They can be also used as catalysts for catalytic degradation reactions such as redox reactions of pollutants. They can be used as filters for air purification by capturing carbon dioxide (CO2) and volatile organic compounds (VOCs). They can be used for hydrogen production via water splitting, alcohol oxidation, and hydrolysis of NaBH4. Nanomedicine for some of these materials was also included being an effective agent as an antibacterial, nanocarrier for drug delivery, and probe for biosensing.
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Affiliation(s)
- Hani Nasser Abdelhamid
- Advanced Multifunctional Materials Laboratory, Chemistry Department-Faculty of Science, Assiut University, Egypt
- Nanotechnology Research Centre (NTRC), The British University in Egypt (BUE), Suez Desert Road, El-Sherouk City, Cairo 11837, Egypt
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5
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Schiefer JL, Aretz FG, Fuchs PC, Lefering R, Yary P, Opländer C, Schulz A, Daniels M. Comparison of Long-Term Skin Quality and Scar Formation in Partial-Thickness Burn Wounds Treated with Suprathel ® and epicite hydro® Wound Dressings. MEDICINA (KAUNAS, LITHUANIA) 2022; 58:1550. [PMID: 36363504 PMCID: PMC9698741 DOI: 10.3390/medicina58111550] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/12/2022] [Accepted: 10/26/2022] [Indexed: 08/27/2023]
Abstract
Background and Objectives: Scar formation after burn trauma has a significant impact on the quality of life of burn patients. Hypertrophic scars or keloids can be very distressing to patients due to potential pain, functional limitations, or hyper- or hypopigmentation. In a previous study comparing Suprathel® and the new and cheaper dressing epicitehydro®, we were able to show that pain reduction, exudation, and time until wound-healing of partial-thickness burn wounds were similar, without any documented infections. No study exists that objectively measures and compares skin and scar quality after treatment with Suprathel® and epicitehydro® at present. Materials and Methods: In this study, the scar quality of 20 patients who had been treated with Suprathel® and epicitehydro® was objectively assessed using the Cutometer®, Mexameter®, and Tewameter®, as well as subjectively with the Patient and Observer Scar Assessment Scale, 3, 6, and 12 months after burn injury. Results: In all performed measurements, no significant differences were detected in scar formation after treatment of partial-thickness burn wounds with the two dressings. Conclusions: Both the newer and less expensive wound-dressing epicitehydro® and the well-known wound-dressing Suprathel® resulted in stable wound closure and showed good cosmetic results in the follow-up examinations.
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Affiliation(s)
- Jennifer Lynn Schiefer
- Department of Plastic, Reconstructive, Hand and Burn Surgery, Hospital Cologne Merheim, University of Witten-Herdecke, 58455 Witten, Germany
| | - Friederike Genoveva Aretz
- Department of Plastic, Reconstructive, Hand and Burn Surgery, Hospital Cologne Merheim, University of Witten-Herdecke, 58455 Witten, Germany
| | - Paul Christian Fuchs
- Department of Plastic, Reconstructive, Hand and Burn Surgery, Hospital Cologne Merheim, University of Witten-Herdecke, 58455 Witten, Germany
| | - Rolf Lefering
- Institute for Research in Operative Medicine (IFOM), Faculty of Health, Witten/Herdecke University, 51109 Cologne, Germany
| | - Pouyan Yary
- Department of Plastic, Reconstructive, Hand and Burn Surgery, Hospital Cologne Merheim, University of Witten-Herdecke, 58455 Witten, Germany
| | - Christian Opländer
- Institute for Research in Operative Medicine (IFOM), Faculty of Health, Witten/Herdecke University, 51109 Cologne, Germany
| | - Alexandra Schulz
- Department of Plastic, Reconstructive, Hand and Burn Surgery, Hospital Cologne Merheim, University of Witten-Herdecke, 58455 Witten, Germany
| | - Marc Daniels
- Department of Plastic, Reconstructive, Hand and Burn Surgery, Hospital Cologne Merheim, University of Witten-Herdecke, 58455 Witten, Germany
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Tuca AC, Bernardelli de Mattos I, Funk M, Winter R, Palackic A, Groeber-Becker F, Kruse D, Kukla F, Lemarchand T, Kamolz LP. Orchestrating the Dermal/Epidermal Tissue Ratio during Wound Healing by Controlling the Moisture Content. Biomedicines 2022; 10:biomedicines10061286. [PMID: 35740308 PMCID: PMC9219632 DOI: 10.3390/biomedicines10061286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 05/26/2022] [Accepted: 05/27/2022] [Indexed: 01/13/2023] Open
Abstract
A balanced and moist wound environment and surface increases the effect of various growth factors, cytokines, and chemokines, stimulating cell growth and wound healing. Considering this fact, we tested in vitro and in vivo water evaporation rates from the cellulose dressing epicitehydro when combined with different secondary dressings as well as the resulting wound healing efficacy in a porcine donor site model. The aim of this study was to evaluate how the different rates of water evaporation affected wound healing efficacy. To this end, epicitehydro primary dressing, in combination with different secondary dressing materials (cotton gauze, JELONET◊, AQUACEL® Extra ™, and OPSITE◊ Flexifix), was placed on 3 × 3 cm-sized dermatome wounds with a depth of 1.2 mm on the flanks of domestic pigs. The healing process was analyzed histologically and quantified by morphometry. High water evaporation rates by using the correct secondary dressing, such as cotton gauze, favored a better re-epithelialization in comparison with the low water evaporation resulting from an occlusive secondary dressing, which favored the formation of a new and intact dermal tissue that nearly fully replaced all the dermis that was removed during wounding. This newly available evidence may be of great benefit to clinical wound management.
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Affiliation(s)
- Alexandru-Cristian Tuca
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, 8036 Graz, Austria; (R.W.); (A.P.); (L.-P.K.)
- Correspondence: ; Tel.: +43-316-385-30742
| | - Ives Bernardelli de Mattos
- Department Tissue Engineering & Regenerative Medicine (TERM), University Hospital Würzburg, 97080 Würzburg, Germany; (I.B.d.M.); (F.G.-B.); (D.K.)
| | | | - Raimund Winter
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, 8036 Graz, Austria; (R.W.); (A.P.); (L.-P.K.)
| | - Alen Palackic
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, 8036 Graz, Austria; (R.W.); (A.P.); (L.-P.K.)
| | - Florian Groeber-Becker
- Department Tissue Engineering & Regenerative Medicine (TERM), University Hospital Würzburg, 97080 Würzburg, Germany; (I.B.d.M.); (F.G.-B.); (D.K.)
- Translational Center Regenerative Therapies, Fraunhofer Institute for Silicate Research ISC, 97080 Würzburg, Germany
| | - Daniel Kruse
- Department Tissue Engineering & Regenerative Medicine (TERM), University Hospital Würzburg, 97080 Würzburg, Germany; (I.B.d.M.); (F.G.-B.); (D.K.)
| | - Fabian Kukla
- TPL Path Labs GmbH, 79111 Freiburg, Germany; (F.K.); (T.L.)
| | | | - Lars-Peter Kamolz
- Department of Surgery, Division of Plastic, Aesthetic and Reconstructive Surgery, Medical University of Graz, 8036 Graz, Austria; (R.W.); (A.P.); (L.-P.K.)
- Joanneum Research Forschungsgesellschaft mbH, COREMED, 8036 Graz, Austria
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7
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Zahel P, Beekmann U, Eberlein T, Schmitz M, Werz O, Kralisch D. Bacterial Cellulose-Adaptation of a Nature-Identical Material to the Needs of Advanced Chronic Wound Care. Pharmaceuticals (Basel) 2022; 15:683. [PMID: 35745602 PMCID: PMC9228795 DOI: 10.3390/ph15060683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Revised: 05/19/2022] [Accepted: 05/21/2022] [Indexed: 12/10/2022] Open
Abstract
Modern wound treatment calls for hydroactive dressings. Among the variety of materials that have entered the field of wound care in recent years, the carbohydrate polymer bacterial cellulose (BC) represents one of the most promising candidates as the biomaterial features a high moisture-loading and donation capacity, mechanical stability, moldability, and breathability. Although BC has already gained increasing relevance in the treatment of burn wounds, its potential and clinical performance for "chronic wound" indications have not yet been sufficiently investigated. This article focuses on experimental and clinical data regarding the application of BC within the indications of chronic, non-healing wounds, especially venous and diabetic ulcers. A recent clinical observation study in a chronic wound setting clearly demonstrated its wound-cleansing properties and ability to induce healing in stalling wounds. Furthermore, the material parameters of BC dressings obtained through the static cultivation of Komagataeibacter xylinus were investigated for the first time in standardized tests and compared to various advanced wound-care products. Surprisingly, a free swell absorptive capacity of a BC dressing variant containing 97% moisture was found, which was higher than that of alginate or even hydrofiber dressings. We hypothesize that the fine-structured, open porous network and the resulting capillary forces are among the main reasons for this unexpected result.
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Affiliation(s)
- Paul Zahel
- JeNaCell GmbH—An Evonik Company, 07745 Jena, Germany; (P.Z.); (U.B.)
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, 07743 Jena, Germany;
| | - Uwe Beekmann
- JeNaCell GmbH—An Evonik Company, 07745 Jena, Germany; (P.Z.); (U.B.)
| | | | | | - Oliver Werz
- Department of Pharmaceutical/Medicinal Chemistry, Institute of Pharmacy, Friedrich Schiller University Jena, 07743 Jena, Germany;
| | - Dana Kralisch
- JeNaCell GmbH—An Evonik Company, 07745 Jena, Germany; (P.Z.); (U.B.)
- Evonik Operations GmbH, 45128 Essen, Germany
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8
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Abdelhamid HN, Mathew AP. Cellulose-Based Nanomaterials Advance Biomedicine: A Review. Int J Mol Sci 2022; 23:5405. [PMID: 35628218 PMCID: PMC9140895 DOI: 10.3390/ijms23105405] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/21/2022] [Accepted: 05/10/2022] [Indexed: 02/04/2023] Open
Abstract
There are various biomaterials, but none fulfills all requirements. Cellulose biopolymers have advanced biomedicine to satisfy high market demand and circumvent many ecological concerns. This review aims to present an overview of cellulose knowledge and technical biomedical applications such as antibacterial agents, antifouling, wound healing, drug delivery, tissue engineering, and bone regeneration. It includes an extensive bibliography of recent research findings from fundamental and applied investigations. Cellulose-based materials are tailorable to obtain suitable chemical, mechanical, and physical properties required for biomedical applications. The chemical structure of cellulose allows modifications and simple conjugation with several materials, including nanoparticles, without tedious efforts. They render the applications cheap, biocompatible, biodegradable, and easy to shape and process.
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Affiliation(s)
- Hani Nasser Abdelhamid
- Department of Materials and Environmental Chemistry, Stockholm University, SE-10691 Stockholm, Sweden;
- Advanced Multifunctional Materials Laboratory, Department of Chemistry, Faculty of Science, Assiut University, Assiut 71515, Egypt
| | - Aji P. Mathew
- Department of Materials and Environmental Chemistry, Stockholm University, SE-10691 Stockholm, Sweden;
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9
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Luca-Pozner V, Nischwitz SP, Conti E, Lipa G, Ghezal S, Luze H, Funk M, Remy H, Qassemyar Q. The use of a novel burn dressing out of bacterial nanocellulose compared to the French standard of care in paediatric 2nd degree burns - A retrospective analysis. Burns 2021; 48:1472-1480. [PMID: 34924226 DOI: 10.1016/j.burns.2021.11.019] [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: 07/21/2021] [Revised: 08/18/2021] [Accepted: 11/23/2021] [Indexed: 11/02/2022]
Abstract
PURPOSE Paediatric burn care is a delicate discipline which benefits from special attention. Despite being highly effective, the current standard of care for second degree burns in the largest paediatric burn center in France - exposure to infrared light - involves long hospital stays, straining economic and professional resources, especially in times of a pandemic. The present study investigated this standard of care and compared it to the use of a bacterial nanocellulose dressing. MATERIALS AND METHODS A retrospective analysis of two groups has been performed: the control group assessed thirty consecutive children treated with the standard of care, and the intervention group assessed thirty consecutive children treated with the bacterial nanocellulose dressing. Parameters evaluated were: healed wounds, additional treatments, rate of infections, hospital length of stay, pain experience and overall satisfaction. RESULTS The two groups did not differ significantly in terms of age and TBSA. A significant reduction in hospital length of stay (p < .001) and pain experience (p < .001) could be observed. In terms of healed wounds, additional treatments and infections, the two groups were equally matched (p > .05) with satisfactory results in both groups. Tendencies towards better results could be seen in the intervention group. CONCLUSION The use of bacterial nanocellulose wound dressings is an important tool in the armamentarium of today's burn surgeons. Satisfying results were achieved, ameliorating burn care for children. Future studies are indicated to further support its value and assess the economic impact.
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Affiliation(s)
- V Luca-Pozner
- Armand Trousseau Hospital, Department of Plastic and Reconstructive Surgery, 28 Av du Dr Arnold Netter, Paris, France; Sorbonne University, 91-105 Boulevard de l'Hopital, Paris, France
| | - S P Nischwitz
- COREMED - Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria; Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria.
| | - E Conti
- Armand Trousseau Hospital, Department of Plastic and Reconstructive Surgery, 28 Av du Dr Arnold Netter, Paris, France
| | - G Lipa
- Armand Trousseau Hospital, Department of Plastic and Reconstructive Surgery, 28 Av du Dr Arnold Netter, Paris, France
| | - S Ghezal
- Armand Trousseau Hospital, Department of Plastic and Reconstructive Surgery, 28 Av du Dr Arnold Netter, Paris, France
| | - H Luze
- COREMED - Cooperative Centre for Regenerative Medicine, JOANNEUM RESEARCH Forschungsgesellschaft mbH, Graz, Austria; Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Graz, Austria
| | - M Funk
- EVOMEDIS GmbH, Graz, Austria
| | - H Remy
- Armand Trousseau Hospital, Department of Plastic and Reconstructive Surgery, 28 Av du Dr Arnold Netter, Paris, France
| | - Q Qassemyar
- Armand Trousseau Hospital, Department of Plastic and Reconstructive Surgery, 28 Av du Dr Arnold Netter, Paris, France; Sorbonne University, 91-105 Boulevard de l'Hopital, Paris, France
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10
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Paleczny J, Junka A, Brożyna M, Dydak K, Oleksy-Wawrzyniak M, Ciecholewska-Juśko D, Dziedzic E, Bartoszewicz M. The High Impact of Staphylococcus aureus Biofilm Culture Medium on In Vitro Outcomes of Antimicrobial Activity of Wound Antiseptics and Antibiotic. Pathogens 2021; 10:pathogens10111385. [PMID: 34832540 PMCID: PMC8626063 DOI: 10.3390/pathogens10111385] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/14/2021] [Accepted: 10/22/2021] [Indexed: 12/19/2022] Open
Abstract
The staphylococcal biofilm-based infections of wounds still pose a significant therapeutical challenge. Treated improperly, they increase the risk of limb amputation or even death of the patient. The present algorithms of infected wound treatment include, among others, the application of antiseptic substances. In vitro wound biofilm models are applied in order to scrutinize their activity. In the present work, using a spectrum of techniques, we showed how the change of a single variable (medium composition) in the standard in vitro model translates not only to shift in staphylococcal biofilm features but also to the change of efficacy of clinically applied wound antimicrobials such as octenidine, polyhexamethylene biguanide, chlorhexidine, hypochlorite solutions, and locally applied gentamycin. The data presented in this study may be of a pivotal nature, taking into consideration the fact that results of in vitro analyses are frequently used to propagate application of specific antimicrobials in hospitals and ambulatory care units.
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Affiliation(s)
- Justyna Paleczny
- Department of Pharmaceutical Microbiology and Parasitology, Faculty of Pharmacy, Wroclaw Medical University, 50-556 Wroclaw, Poland; (J.P.); (M.B.); (K.D.); (M.O.-W.); (M.B.)
| | - Adam Junka
- Department of Pharmaceutical Microbiology and Parasitology, Faculty of Pharmacy, Wroclaw Medical University, 50-556 Wroclaw, Poland; (J.P.); (M.B.); (K.D.); (M.O.-W.); (M.B.)
- Correspondence:
| | - Malwina Brożyna
- Department of Pharmaceutical Microbiology and Parasitology, Faculty of Pharmacy, Wroclaw Medical University, 50-556 Wroclaw, Poland; (J.P.); (M.B.); (K.D.); (M.O.-W.); (M.B.)
| | - Karolina Dydak
- Department of Pharmaceutical Microbiology and Parasitology, Faculty of Pharmacy, Wroclaw Medical University, 50-556 Wroclaw, Poland; (J.P.); (M.B.); (K.D.); (M.O.-W.); (M.B.)
| | - Monika Oleksy-Wawrzyniak
- Department of Pharmaceutical Microbiology and Parasitology, Faculty of Pharmacy, Wroclaw Medical University, 50-556 Wroclaw, Poland; (J.P.); (M.B.); (K.D.); (M.O.-W.); (M.B.)
| | - Daria Ciecholewska-Juśko
- Department of Microbiology and Biotechnology, Faculty of Biotechnology and Animal Husbandry, West Pomeranian University of Technology, 70-311 Szczecin, Poland;
| | - Ewelina Dziedzic
- Faculty of Medicine, Lazarski University, 02-662 Warszawa, Poland;
| | - Marzenna Bartoszewicz
- Department of Pharmaceutical Microbiology and Parasitology, Faculty of Pharmacy, Wroclaw Medical University, 50-556 Wroclaw, Poland; (J.P.); (M.B.); (K.D.); (M.O.-W.); (M.B.)
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Resch A, Staud C, Radtke C. Nanocellulose-based wound dressing for conservative wound management in children with second-degree burns. Int Wound J 2021; 18:478-486. [PMID: 33465280 PMCID: PMC8273580 DOI: 10.1111/iwj.13548] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 12/19/2020] [Accepted: 12/31/2020] [Indexed: 01/08/2023] Open
Abstract
The initial care of burn wounds and choice of dressing are pivotal to optimally support the healing process. To ensure fast re-epithelialisation within 10-14 days and prevent complications, an optimal healing environment is essential. An innovative dressing based on nanocellulose was used for the treatment of burns in children. Children (0-16 years) with clean, partial-thickness burn wounds, 1 to 10% of the total body surface area were included. Complete re-epithelialisation was achieved within 7-17 days, with 13 patients showing re-epithelialised >95% by day 10. Satisfying results concerning time to re-epithelialisation and material handling were obtained. The possibility to leave the dressing on the wounds for 7 days showed a positive effect in the treatment of children, for whom every hospital visit may cause massive stress reactions. The nanocellulose-based dressing is a promising tool in conservative treatment of burns. Reducing the frequency of dressing changes supports a fast and undisturbed recovery; moreover, the dressing provides an optimal moist healing environment. The time to re-epithelialisation is comparable to frequently used materials, and cost reduction effect can be achieved without loss of quality. Possible pain and distress levels are kept to a minimum; therefore, flexibility and compliance of the patients and their parents are enhanced.
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Affiliation(s)
- Annika Resch
- Division of Plastic and Reconstructive Surgery, Department of SurgeryMedical University of ViennaViennaAustria
| | - Clement Staud
- Division of Plastic and Reconstructive Surgery, Department of SurgeryMedical University of ViennaViennaAustria
| | - Christine Radtke
- Division of Plastic and Reconstructive Surgery, Department of SurgeryMedical University of ViennaViennaAustria
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Controlled Release of the α-Tocopherol-Derived Metabolite α-13'-Carboxychromanol from Bacterial Nanocellulose Wound Cover Improves Wound Healing. NANOMATERIALS 2021; 11:nano11081939. [PMID: 34443772 PMCID: PMC8398652 DOI: 10.3390/nano11081939] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/10/2021] [Accepted: 07/12/2021] [Indexed: 01/29/2023]
Abstract
Inflammation is a hallmark of tissue remodeling during wound healing. The inflammatory response to wounds is tightly controlled and well-coordinated; dysregulation compromises wound healing and causes persistent inflammation. Topical application of natural anti-inflammatory products may improve wound healing, in particular under chronic pathological conditions. The long-chain metabolites of vitamin E (LCM) are bioactive molecules that mediate cellular effects via oxidative stress signaling as well as anti-inflammatory pathways. However, the effect of LCM on wound healing has not been investigated. We administered the α-tocopherol-derived LCMs α-13'-hydroxychromanol (α-13'-OH) and α-13'-carboxychromanol (α-13'-COOH) as well as the natural product garcinoic acid, a δ-tocotrienol derivative, in different pharmaceutical formulations directly to wounds using a splinted wound mouse model to investigate their effects on the wounds' proinflammatory microenvironment and wound healing. Garcinoic acid and, in particular, α-13'-COOH accelerated wound healing and quality of the newly formed tissue. We next loaded bacterial nanocellulose (BNC), a valuable nanomaterial used as a wound dressing with high potential for drug delivery, with α-13'-COOH. The controlled release of α-13'-COOH using BNC promoted wound healing and wound closure, mainly when a diabetic condition was induced before the injury. This study highlights the potential of α-13'-COOH combined with BNC as a potential active wound dressing for the advanced therapy of skin injuries.
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Nicu R, Ciolacu F, Ciolacu DE. Advanced Functional Materials Based on Nanocellulose for Pharmaceutical/Medical Applications. Pharmaceutics 2021; 13:1125. [PMID: 34452086 PMCID: PMC8399340 DOI: 10.3390/pharmaceutics13081125] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 07/09/2021] [Accepted: 07/19/2021] [Indexed: 12/13/2022] Open
Abstract
Nanocelluloses (NCs), with their remarkable characteristics, have proven to be one of the most promising "green" materials of our times and have received special attention from researchers in nanomaterials. A diversity of new functional materials with a wide range of biomedical applications has been designed based on the most desirable properties of NCs, such as biocompatibility, biodegradability, and their special physicochemical properties. In this context and under the pressure of rapid development of this field, it is imperative to synthesize the successes and the new requirements in a comprehensive review. The first part of this work provides a brief review of the characteristics of the NCs (cellulose nanocrystals-CNC, cellulose nanofibrils-CNF, and bacterial nanocellulose-BNC), as well as of the main functional materials based on NCs (hydrogels, nanogels, and nanocomposites). The second part presents an extensive review of research over the past five years on promising pharmaceutical and medical applications of nanocellulose-based materials, which have been discussed in three important areas: drug-delivery systems, materials for wound-healing applications, as well as tissue engineering. Finally, an in-depth assessment of the in vitro and in vivo cytotoxicity of NCs-based materials, as well as the challenges related to their biodegradability, is performed.
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Affiliation(s)
- Raluca Nicu
- Department of Natural Polymers, Bioactive and Biocompatible Materials, “Petru Poni” Institute of Macromolecular Chemistry, 700487 Iasi, Romania;
| | - Florin Ciolacu
- Department of Natural and Synthetic Polymers, “Gheorghe Asachi” Technical University of Iasi, 700050 Iasi, Romania
| | - Diana E. Ciolacu
- Department of Natural Polymers, Bioactive and Biocompatible Materials, “Petru Poni” Institute of Macromolecular Chemistry, 700487 Iasi, Romania;
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