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Mayrovitz HN. Intra-day variations in volar forearm skin hydration. Skin Res Technol 2024; 30:e13849. [PMID: 38978227 PMCID: PMC11231035 DOI: 10.1111/srt.13849] [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: 06/11/2024] [Accepted: 06/17/2024] [Indexed: 07/10/2024]
Abstract
BACKGROUND Skin hydration (SKH) measurements are used for multiple purposes: to study skin physiology, to clinically investigate dermatological issues, and to assess localized skin water in pathologies like diabetes and lymphedema. Often the volar forearm is measured at various times of day (TOD). This report aims to characterize intra-day variations in volar forearm SKH to provide guidance on expected TOD dependence. MATERIALS AND METHODS Forty medical students (20 male) self-measured tissue dielectric constant (TDC) on their non-dominant forearm in triplicate as an index of local skin tissue water every 2 h starting at 0800 and ending at 2400 h. All were trained and pre-certified in the procedure and had whole-body fat (FAT%) and water (H2O%) measured. Day average TDC (TDCAVG) was determined as the average of all time points expressed as mean ± SD. RESULTS Males versus females had similar ages (25.1 ± 2.2 years vs. 25.1 ± 1.5 years), higher H2O% (56.6 ± 5.0 vs. 51.8 ± 5.7, p = 0.002), and higher TDCAVG (32.7 ± 4.1 vs. 28.5 ± 5.1, p = 0.008). TDC values were not significantly impacted by H2O% or FAT%. Female TDC exhibited a significant decreasing trend from morning to night (p = 0.004); male TDC showed no trend. CONCLUSION Skin water assessed by TDC shows some intra-day variations for females and males but with quite different temporal patterns. Clinical relevance relates to the confidence level associated with skin hydration estimates when measured at different times of day during normal clinic hours which, based on the present data, is expected to be around 5% for both males and females.
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Affiliation(s)
- Harvey N. Mayrovitz
- Department of Medical Education, Dr. Kiran C. Patel College of Allopathic MedicineNova Southeastern UniversityFort LauderdaleUSA
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Lyu S, Liu Q, Yuen HY, Xie H, Yang Y, Yeung KWK, Tang CY, Wang S, Liu Y, Li B, He Y, Zhao X. A differential-targeting core-shell microneedle patch with coordinated and prolonged release of mangiferin and MSC-derived exosomes for scarless skin regeneration. MATERIALS HORIZONS 2024; 11:2667-2684. [PMID: 38669042 DOI: 10.1039/d3mh01910a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
Microneedles for skin regeneration are conventionally restricted by uncontrollable multi-drug release, limited types of drugs, and poor wound adhesion. Here, a novel core-shell microneedle patch is developed for scarless skin repair, where the shell is composed of hydrophilic gelatin methacryloyl (GelMA) loaded with mangiferin, an anti-inflammatory small molecule, and the core is composed of hydrophobic poly (lactide-co-propylene glycol-co-lactide) dimethacrylates (PGLADMA) loaded with bioactive macromolecule and human mesenchymal stromal cell (hMSC)-derived exosomes. This material choice provides several benefits: the GelMA shell provides a swelling interface for tissue interlocking and rapid release of mangiferin at an early wound healing stage for anti-inflammation, whereas the PGLADMA core offers long-term encapsulation and release of exosomes (30% release in 3 weeks), promoting sustained angiogenesis and anti-inflammation. Our results demonstrate that the core-shell microneedle possesses anti-inflammatory properties and can induce angiogenesis both in vitro in terms of macrophage polarization and tube formation of human umbilical vein endothelial cells (HUVECs), and in vivo in terms of anti-inflammation, re-epithelization, and vessel formation. Importantly, we also observe reduced scar formation in vivo. Altogether, the degradation dynamics of our hydrophilic/hydrophobic materials enable the design of a core-shell microneedle for differential and prolonged release, promoting scarless skin regeneration, with potential for other therapies of long-term exosome release.
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Affiliation(s)
- Shang Lyu
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR 999077, China
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR 999077, China.
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China.
| | - Qi Liu
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR 999077, China
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR 999077, China.
| | - Ho-Yin Yuen
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR 999077, China
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR 999077, China.
| | - Huizhi Xie
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR 999077, China
| | - Yuhe Yang
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR 999077, China
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR 999077, China.
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, Guangdong 518057, China
| | - Kelvin Wai-Kwok Yeung
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR 999077, China
| | - Chak-Yin Tang
- Department of Industrial & Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR 999077, China
| | - Shuqi Wang
- Tianfu Jincheng Laboratory, City of Future Medicine, Chengdu 641400, China
- Clinical Research Center for Respiratory Disease, West China Hospital, Sichuan University, Chengdu 610065, China
| | - Yaxiong Liu
- Jihua Laboratory, Foshan, Guangdong 528000, China
| | - Bin Li
- Medical 3D Printing Center, Orthopedic Institute, Department of Orthopaedic Surgery, The First Affiliated Hospital, School of Biology & Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou, Jiangsu 215006, China.
- Collaborative Innovation Center of Hematology, Soochow University, Suzhou, Jiangsu 215006, China
| | - Yong He
- State Key Laboratory of Fluid Power and Mechatronic Systems, School of Mechanical Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China.
| | - Xin Zhao
- Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR 999077, China
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong SAR 999077, China.
- The Hong Kong Polytechnic University Shenzhen Research Institute, Shenzhen, Guangdong 518057, China
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Pumford AD, Staricha KL, Kunkel ET, Armstrong MF, Behfar A, Van Abel KM. Exosome Therapy for a Nonhealing Scalp Wound Following Chemoradiation and Surgical Therapy. Mayo Clin Proc 2024; 99:1006-1012. [PMID: 38839179 DOI: 10.1016/j.mayocp.2024.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Revised: 04/05/2024] [Accepted: 04/19/2024] [Indexed: 06/07/2024]
Abstract
This case report describes the safety and utility of a noninvasive therapy, Purified Exosome Product (PEP), for poorly healing scalp wounds in the setting of prior chemoradiation and surgery. A man in his 60s with a history of high-grade angiosarcoma of the right temporoparietal scalp reconstruction had a 1-year history of 2 nonhealing scalp wounds after neoadjuvant chemotherapy followed by concurrent chemoradiation therapy, wide local excision, and latissimus dorsi free flap and split-thickness skin graft. The patient underwent débridement followed by 4 collagen (Bellafill)-PEP and 4 fibrin (Tisseel)-PEP applications during 7 months in 2022. Photographs of the area of exposed bone of the temporoparietal wound were measured and standardized by ImageJ open-source software. The frontal wound was not routinely measured and therefore was qualitatively assessed by reviewing photographs over time. The frontal wound completely healed, and the temporoparietal wound showed a 96% decrease in overall size. The patient had no adverse effects of treatment and continues to demonstrate ongoing healing. This case exhibits the safety and utility of topical PEP therapy for noninvasive treatment of poorly healing scalp wounds and offers the potential for an alternative treatment of patients who are poor candidates for additional surgical intervention.
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Affiliation(s)
| | - Kelly L Staricha
- Department of Otolaryngology-Head & Neck Surgery, Mayo Clinic, Rochester, MN
| | - Elizabeth T Kunkel
- Department of Otolaryngology-Head & Neck Surgery, Mayo Clinic, Rochester, MN
| | - Michael F Armstrong
- Department of Otolaryngology-Head & Neck Surgery, Mayo Clinic, Rochester, MN
| | - Atta Behfar
- Department of Cardiovascular Medicine, Van Cleve Cardiac Regenerative Medicine Program, Mayo Clinic, Rochester, MN
| | - Kathryn M Van Abel
- Department of Otolaryngology-Head & Neck Surgery, Mayo Clinic, Rochester, MN.
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Simonyan H, Palumbo R, Petrosyan S, Mkrtchyan A, Galstyan A, Saghyan A, Scognamiglio PL, Vicidomini C, Fik-Jaskólka M, Roviello GN. BSA Binding and Aggregate Formation of a Synthetic Amino Acid with Potential for Promoting Fibroblast Proliferation: An In Silico, CD Spectroscopic, DLS, and Cellular Study. Biomolecules 2024; 14:579. [PMID: 38785986 PMCID: PMC11118884 DOI: 10.3390/biom14050579] [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: 03/28/2024] [Revised: 05/10/2024] [Accepted: 05/11/2024] [Indexed: 05/25/2024] Open
Abstract
This study presents the chemical synthesis, purification, and characterization of a novel non-natural synthetic amino acid. The compound was synthesized in solution, purified, and characterized using NMR spectroscopy, polarimetry, and melting point determination. Dynamic Light Scattering (DLS) analysis demonstrated its ability to form aggregates with an average size of 391 nm, extending to the low micrometric size range. Furthermore, cellular biological assays revealed its ability to enhance fibroblast cell growth, highlighting its potential for tissue regenerative applications. Circular dichroism (CD) spectroscopy showed the ability of the synthetic amino acid to bind serum albumins (using bovine serum albumin (BSA) as a model), and CD deconvolution provided insights into the changes in the secondary structures of BSA upon interaction with the amino acid ligand. Additionally, molecular docking using HDOCK software elucidated the most likely binding mode of the ligand inside the BSA structure. We also performed in silico oligomerization of the synthetic compound in order to obtain a model of aggregate to investigate computationally. In more detail, the dimer formation achieved by molecular self-docking showed two distinct poses, corresponding to the lowest and comparable energies, with one pose exhibiting a quasi-coplanar arrangement characterized by a close alignment of two aromatic rings from the synthetic amino acids within the dimer, suggesting the presence of π-π stacking interactions. In contrast, the second pose displayed a non-coplanar configuration, with the aromatic rings oriented in a staggered arrangement, indicating distinct modes of interaction. Both poses were further utilized in the self-docking procedure. Notably, iterative molecular docking of amino acid structures resulted in the formation of higher-order aggregates, with a model of a 512-mer aggregate obtained through self-docking procedures. This model of aggregate presented a cavity capable of hosting therapeutic cargoes and biomolecules, rendering it a potential scaffold for cell adhesion and growth in tissue regenerative applications. Overall, our findings highlight the potential of this synthetic amino acid for tissue regenerative therapeutics and provide valuable insights into its molecular interactions and aggregation behavior.
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Affiliation(s)
- Hayarpi Simonyan
- Institute of Pharmacy, Yerevan State University, 1 Alex Manoogian Str., Yerevan 0025, Armenia
| | - Rosanna Palumbo
- Institute of Biostructures and Bioimaging, Italian National Council for Research (IBB-CNR), Area di Ricerca Site and Headquarters, Via Pietro Castellino 111, 80131 Naples, Italy
| | - Satenik Petrosyan
- Institute of Pharmacy, Yerevan State University, 1 Alex Manoogian Str., Yerevan 0025, Armenia
| | - Anna Mkrtchyan
- Institute of Pharmacy, Yerevan State University, 1 Alex Manoogian Str., Yerevan 0025, Armenia
| | - Armen Galstyan
- Department of Chemistry, Yerevan State University, 1 Alex Manoogian Str., Yerevan 0025, Armenia
| | - Ashot Saghyan
- Institute of Pharmacy, Yerevan State University, 1 Alex Manoogian Str., Yerevan 0025, Armenia
| | | | - Caterina Vicidomini
- Institute of Biostructures and Bioimaging, Italian National Council for Research (IBB-CNR), Area di Ricerca Site and Headquarters, Via Pietro Castellino 111, 80131 Naples, Italy
| | - Marta Fik-Jaskólka
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland
| | - Giovanni N. Roviello
- Institute of Biostructures and Bioimaging, Italian National Council for Research (IBB-CNR), Area di Ricerca Site and Headquarters, Via Pietro Castellino 111, 80131 Naples, Italy
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5
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Hecker A, Watzinger N, Pignet AL, Michelitsch B, Kotzbeck P, Kamolz LP. Ceramic Dressings-A New Non-Pharmacological Therapeutic Option in the Management of Chronic Wounds? J Pers Med 2024; 14:498. [PMID: 38793080 PMCID: PMC11122284 DOI: 10.3390/jpm14050498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 04/30/2024] [Accepted: 05/06/2024] [Indexed: 05/26/2024] Open
Abstract
A new ceramic dressing, free from active antimicrobial or pharmaceutical agents, uses physical binding mechanisms for its absorption capacities and bacterial-binding properties. The purpose of this study was to evaluate wound healing, bacterial-related retention, and diagnostic properties of ceramic dressings in patients with stagnated chronic wounds. METHODS In this monocentric, intra-individually controlled, prospective study, patients with conservatively treated refractory chronic wounds were enrolled. One week before the start of the application with ceramic dressing, it was ensured during a screening phase that chronic wounds showed less than a 10% reduction in wound size. During the 4-week ceramic dressing treatment wound size measurements, wound scoring, measurement of wound exudate amount, wound swabs, and ceramic dressing sonication (low-intensity ultrasound) were carried out. The sonication fluid of the removed ceramic dressing was used for analysis of bacterial retention and compared to wound swabs. RESULTS A total of 20 patients with a mean age of 64.6 years (±26.2) and 21 chronic wounds were included in this study. After a 4-week treatment, a significant reduction of median wound size from 1178 mm2 (range 104-6300) to 751.5 mm2 (range 16-4819) and better total wound scores were observed (p < 0.001). The sensitivity of bacteria detection was 90.7% in the sonication fluid from the ceramic dressings, while only 76.9% in the conventional wound swabs. CONCLUSION The new ceramic dressing seems to have a positive impact on wound healing in chronic wounds. Bacteria-binding characteristics of the investigated ceramic dressing, in combination with its debridement, absorption, and detoxification properties, could contribute to its healing abilities. Based on those results, the investigated ceramic dressing seems to be a promising new treatment option for chronic wounds without the use of any active antimicrobial or pharmacological agents. Moreover, ceramic dressings can also be considered for microbiological diagnostic purposes.
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Affiliation(s)
- Andrzej Hecker
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 29/4, 8036 Graz, Austria; (A.H.); (L.-P.K.)
- COREMED—Centre for Regenerative Medicine and Precision Medicine, Joanneum Research Forschungsgesellschaft mbH, Neue Stiftingtalstraße 2, 8010 Graz, Austria
| | - Nikolaus Watzinger
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 29/4, 8036 Graz, Austria; (A.H.); (L.-P.K.)
- COREMED—Centre for Regenerative Medicine and Precision Medicine, Joanneum Research Forschungsgesellschaft mbH, Neue Stiftingtalstraße 2, 8010 Graz, Austria
| | - Anna-Lisa Pignet
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 29/4, 8036 Graz, Austria; (A.H.); (L.-P.K.)
- COREMED—Centre for Regenerative Medicine and Precision Medicine, Joanneum Research Forschungsgesellschaft mbH, Neue Stiftingtalstraße 2, 8010 Graz, Austria
| | - Birgit Michelitsch
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 29/4, 8036 Graz, Austria; (A.H.); (L.-P.K.)
| | - Petra Kotzbeck
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 29/4, 8036 Graz, Austria; (A.H.); (L.-P.K.)
- COREMED—Centre for Regenerative Medicine and Precision Medicine, Joanneum Research Forschungsgesellschaft mbH, Neue Stiftingtalstraße 2, 8010 Graz, Austria
| | - Lars-Peter Kamolz
- Division of Plastic, Aesthetic and Reconstructive Surgery, Department of Surgery, Medical University of Graz, Auenbruggerplatz 29/4, 8036 Graz, Austria; (A.H.); (L.-P.K.)
- COREMED—Centre for Regenerative Medicine and Precision Medicine, Joanneum Research Forschungsgesellschaft mbH, Neue Stiftingtalstraße 2, 8010 Graz, Austria
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Jiang Y, Wang L, Qi W, Yin P, Liao X, Luo Y, Ding Y. Antibacterial and self-healing sepiolite-based hybrid hydrogel for hemostasis and wound healing. BIOMATERIALS ADVANCES 2024; 159:213838. [PMID: 38531257 DOI: 10.1016/j.bioadv.2024.213838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 02/29/2024] [Accepted: 03/22/2024] [Indexed: 03/28/2024]
Abstract
The process of wound healing necessitates a specific environment, thus prompting extensive research into the utilization of hydrogels for this purpose. While numerous hydrogel structures have been investigated, the discovery of a self-healing hydrogel possessing favorable biocompatibility, exceptional mechanical properties, and effective hemostatic and antibacterial performance remains uncommon. In this work, a polyvinyl alcohol (PVA) hybrid hydrogel was meticulously designed through a simple reaction, wherein CuxO anchored sepiolite was incorporated into the hydrogel. The results indicate that introduction of sepiolite greatly improves the toughness, self-healing and adhesion properties of the PVA hydrogels. CuxO nanoparticles endow the hydrogels with excellent antibacterial performance towards Staphylococcus aureus and Escherichia coli. The application of hybrid hydrogels for fast hemostasis and wound healing are verified in vitro and in vivo with rat experiments. This work thereby demonstrates an effective strategy for designing biodegradable hemostatic and wound healing materials.
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Affiliation(s)
- Yizhi Jiang
- School of mechanical engineering and mechanics, Xiangtan University, Xiangtan 411105, China
| | - Li Wang
- College of Life Science, Hunan Normal University, Changsha 410081, China
| | - Wangdan Qi
- College of Life Science, Hunan Normal University, Changsha 410081, China
| | - Peisheng Yin
- School of mechanical engineering and mechanics, Xiangtan University, Xiangtan 411105, China
| | - Xiang Liao
- Xiangtan Sepiolite Technology Co., LTD, Xiangtan 411100, China
| | - Yuze Luo
- College of Life Science, Hunan Normal University, Changsha 410081, China.
| | - Yanhuai Ding
- School of mechanical engineering and mechanics, Xiangtan University, Xiangtan 411105, China.
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7
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Dupré R, Baillif S, Lotte R, Ruimy R, Lagier J, Berrouane Y, Gawdat T, Fendri M, Martel A. Is topical antibiotic use necessary to prevent surgical site infection following oculoplastic surgery? Graefes Arch Clin Exp Ophthalmol 2024:10.1007/s00417-024-06489-8. [PMID: 38643423 DOI: 10.1007/s00417-024-06489-8] [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: 11/29/2023] [Revised: 04/01/2024] [Accepted: 04/09/2024] [Indexed: 04/22/2024] Open
Abstract
PURPOSE To assess whether oculoplastic surgeries can be performed without any topical and systemic antibiotics, in a "100% antibiotic free" fashion. METHOD We conducted a multicenter retrospective study between November 2017 and December 2022. Patients who underwent an oculoplastic procedure were screened. Patients who received preoperative or postoperative systemic antibiotics were excluded. Intraoperative IV antibiotics were allowed. Patients were divided into two groups: those who were treated with local antibiotics ointments (LATB group) and those who were treated without local antibiotics ointments (LATB free group) postoperatively. The primary outcome was the incidence of surgical site infections (SSI). The relationship between the use of local antibiotics and the occurrence of SSI was assessed using Fisher's exact test. The alpha risk was set to 5% and two-tailed tests were used. RESULTS Among the 947 procedures included, 617 were included in the LATB group and 330 in the LATB free group. 853 and 80 procedures were classified Altemeier class 1 (clean) and class 2 (clean-contaminated) surgeries, respectively. Overall, 310 (32.73%) procedures were performed without any systemic nor topical antibiotics (100% antibiotic free fashion). SSI occured in four (4/617; 0.65%) and five (5/330; 1.52%) procedures in the LATB and LATB free group respectively, without any statistical difference between the groups (p = 0.290). A subgroup analysis was carried out by excluding the procedures performed under prophylactic intraoperative intravenous antibiotics and did not reveal any statistical difference between the two groups (p = 0.144). All SSI patients were treated with systemic antibiotics with favorable outcomes. Postoperative wound dehiscence was the only risk factor associated with postoperative SSI (p = 0.002). CONCLUSION This study suggests that performing a "100% antibiotic free" oculoplastic surgery without systemic and topical antibiotics is reasonable in Altemeier class 1 and class 2 procedures.
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Affiliation(s)
- Robin Dupré
- Ophtalmology department, Pasteur 2 Hospital, University Hospital of Nice, 30 Voie Romaine CS 51069 - 06001, Cedex 1, Nice, France
| | - Stéphanie Baillif
- Ophtalmology department, Pasteur 2 Hospital, University Hospital of Nice, 30 Voie Romaine CS 51069 - 06001, Cedex 1, Nice, France
| | - Romain Lotte
- Department of Bacteriology, University Hospital of Nice, Nice, France
| | - Raymond Ruimy
- Department of Bacteriology, University Hospital of Nice, Nice, France
| | - Jacques Lagier
- Ophtalmology department, Pasteur 2 Hospital, University Hospital of Nice, 30 Voie Romaine CS 51069 - 06001, Cedex 1, Nice, France
| | - Yasmina Berrouane
- Infection Prevention and Control Department, Cimiez Hospital, University Hospital of Nice, Nice, France
| | - Tamer Gawdat
- Ophthalmology department, Kasr Al Ainy Hospital, Cairo University, Cairo, Egypt
| | - Mehdi Fendri
- Ophtalmology department, Private activity at Taoufik Hospital Group, Tunis, Tunisia
| | - Arnaud Martel
- Ophtalmology department, Pasteur 2 Hospital, University Hospital of Nice, 30 Voie Romaine CS 51069 - 06001, Cedex 1, Nice, France.
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Sanjarnia P, Picchio ML, Polegre Solis AN, Schuhladen K, Fliss PM, Politakos N, Metterhausen L, Calderón M, Osorio-Blanco ER. Bringing innovative wound care polymer materials to the market: Challenges, developments, and new trends. Adv Drug Deliv Rev 2024; 207:115217. [PMID: 38423362 DOI: 10.1016/j.addr.2024.115217] [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: 11/14/2023] [Revised: 01/24/2024] [Accepted: 02/18/2024] [Indexed: 03/02/2024]
Abstract
The development of innovative products for treating acute and chronic wounds has become a significant topic in healthcare, resulting in numerous products and innovations over time. The growing number of patients with comorbidities and chronic diseases, which may significantly alter, delay, or inhibit normal wound healing, has introduced considerable new challenges into the wound management scenario. Researchers in academia have quickly identified promising solutions, and many advanced wound healing materials have recently been designed; however, their successful translation to the market remains highly complex and unlikely without the contribution of industry experts. This review article condenses the main aspects of wound healing applications that will serve as a practical guide for researchers working in academia and industry devoted to designing, evaluating, validating, and translating polymer wound care materials to the market. The article highlights the current challenges in wound management, describes the state-of-the-art products already on the market and trending polymer materials, describes the regulation pathways for approval, discusses current wound healing models, and offers a perspective on new technologies that could soon reach consumers. We envision that this comprehensive review will significantly contribute to highlighting the importance of networking and exchanges between academia and healthcare companies. Only through the joint of these two actors, where innovation, manufacturing, regulatory insights, and financial resources act in harmony, can wound care products be developed efficiently to reach patients quickly and affordably.
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Affiliation(s)
- Pegah Sanjarnia
- POLYMAT, Applied Chemistry Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizábal, 3, 20018 Donostia-San Sebastián, Spain
| | - Matías L Picchio
- POLYMAT, Applied Chemistry Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizábal, 3, 20018 Donostia-San Sebastián, Spain; Instituto de Desarrollo Tecnológico para la Industria Química (INTEC), CONICET, Güemes 3450, Santa Fe 3000, Argentina
| | - Agustin N Polegre Solis
- Beiersdorf AG, Research & Development Department, Beiersdorfstraße 1-9, 22529 Hamburg, Germany
| | - Katharina Schuhladen
- Beiersdorf AG, Research & Development Department, Beiersdorfstraße 1-9, 22529 Hamburg, Germany
| | - Patricia M Fliss
- Beiersdorf AG, Research & Development Department, Beiersdorfstraße 1-9, 22529 Hamburg, Germany
| | - Nikolaos Politakos
- POLYMAT, Applied Chemistry Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizábal, 3, 20018 Donostia-San Sebastián, Spain
| | - Lutz Metterhausen
- Beiersdorf AG, Research & Development Department, Beiersdorfstraße 1-9, 22529 Hamburg, Germany
| | - Marcelo Calderón
- POLYMAT, Applied Chemistry Department, Faculty of Chemistry, University of the Basque Country UPV/EHU, Paseo Manuel de Lardizábal, 3, 20018 Donostia-San Sebastián, Spain; IKERBASQUE, Basque Foundation for Science, Plaza Euskadi 5, 48009 Bilbao, Spain
| | - Ernesto R Osorio-Blanco
- Beiersdorf AG, Research & Development Department, Beiersdorfstraße 1-9, 22529 Hamburg, Germany.
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Kaczmarek-Szczepańska B, Zasada L, Wekwejt M, Brzezinska MS, Michno A, Ronowska A, Ciesielska M, Kovtun G, Cuberes MT. PVA-Based Films with Strontium Titanate Nanoparticles Dedicated to Wound Dressing Application. Polymers (Basel) 2024; 16:484. [PMID: 38399862 PMCID: PMC10893095 DOI: 10.3390/polym16040484] [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: 12/15/2023] [Revised: 01/30/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Bioactive materials may be applied in tissue regeneration, and an example of such materials are wound dressings, which are used to accelerate skin healing, especially after trauma. Here, we proposed a novel dressing enriched by a bioactive component. The aim of our study was to prepare and characterize poly(vinyl alcohol) films modified with strontium titanate nanoparticles. The physicochemical properties of films were studied, such as surface free energy and surface roughness, as well as the mechanical properties of materials. Moreover, different biological studies were carried out, like in vitro hemo- and cyto-compatibility, biocidal activity, and anti-biofilm formation. Also, the degradation of the materials' utilization possibilities and enzymatic activity in compost were checked. The decrease of surface free energy, increase of roughness, and improvement of mechanical strength were found after the addition of nanoparticles. All developed films were cyto-compatible, and did not induce a hemolytic effect on the human erythrocytes. The PVA films containing the highest concentration of STO (20%) reduced the proliferation of Eschericha coli, Pseudomonas aeruginosa, and Staphylococcus aureus significantly. Also, all films were characterized by surface anti-biofilm activity, as they significantly lowered the bacterial biofilm abundance and its dehydrogenase activity. The films were degraded by the compost microorganism. However, PVA with the addition of 20%STO was more difficult to degrade. Based on our results, for wound dressing application, we suggest using bioactive films based on PVA + 20%STO, as they were characterized by high antibacterial properties, favorable physicochemical characteristics, and good biocompatibility with human cells.
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Affiliation(s)
- Beata Kaczmarek-Szczepańska
- Department of Biomaterials and Cosmetics Chemistry, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin 7, 87-100 Toruń, Poland; (L.Z.); (M.C.)
| | - Lidia Zasada
- Department of Biomaterials and Cosmetics Chemistry, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin 7, 87-100 Toruń, Poland; (L.Z.); (M.C.)
| | - Marcin Wekwejt
- Department of Biomaterials Technology, Faculty of Mechanical Engineering and Ship Technology, Gdańsk University of Technology, 80-233 Gdańsk, Poland;
| | - Maria Swiontek Brzezinska
- Department of Environmental Microbiology and Biotechnology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Torun, Lwowska 1, 87-100 Torun, Poland;
| | - Anna Michno
- Department of Molecular Medicine, Medical University of Gdańsk, 80-210 Gdańsk, Poland; (A.M.); (A.R.)
| | - Anna Ronowska
- Department of Molecular Medicine, Medical University of Gdańsk, 80-210 Gdańsk, Poland; (A.M.); (A.R.)
| | - Magdalena Ciesielska
- Department of Biomaterials and Cosmetics Chemistry, Faculty of Chemistry, Nicolaus Copernicus University, Gagarin 7, 87-100 Toruń, Poland; (L.Z.); (M.C.)
| | - Ganna Kovtun
- Institute of Magnetism NAS of Ukraine and MES of Ukraine, Blvd. Acad. Vernadsky 36-b, 03142 Kyiv, Ukraine;
- Department of Applied Mechanics and Project Engineering, Mining and Industrial Engineering School of Almaden, University of Castilla-La Mancha, Plaza Manuel Meca 1, 13400 Almadén, Spain;
| | - M. Teresa Cuberes
- Department of Applied Mechanics and Project Engineering, Mining and Industrial Engineering School of Almaden, University of Castilla-La Mancha, Plaza Manuel Meca 1, 13400 Almadén, Spain;
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10
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Nusantoro AP, Kuntaman K, Perdanakusuma DS. Management of wounds in diabetes by administering allicin and quercetin in emulsion form as wound medicine in diabetic rat models. JOURNAL OF COMPLEMENTARY & INTEGRATIVE MEDICINE 2024; 0:jcim-2023-0177. [PMID: 38308387 DOI: 10.1515/jcim-2023-0177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 01/10/2024] [Indexed: 02/04/2024]
Abstract
Wounds in diabetes is a complex problem that requires effective treatment at a high cost. Adjuvant therapy from natural bioactive elements can be an alternative to overcome problems in diabetic wound healing disorders. Allicin and quercetin are natural bioactive substances contained in several fruit or vegetable plants that have various pharmacological effects. The purpose of this study was to determine the effect of allicin and quercetin in emulsion form as wound medicine in helping the wound healing process. Diabetic wistar rats with wounds on their backs measuring 1 × 1 cm were divided into four treatment groups which were given wound medicine once a day for seven days according to their distribution. The wound healing process was evaluated on the third and seventh day. Data were observed and analyzed using appropriate statistical tools. Measurement of wound healing indicators was carried out by examining wound contraction and histopathological examination showing that the treatment group given the allicin and quercetin formula experienced an improvement compared to the treatment group without allicin and quercetin. Allicin and quercetin increase the percentage of wound contraction, increase the density of blood vessels and the epithelialization process in the wound so that the wound healing process becomes faster. In conclusion, allicin and quercetin can be effective adjuvant therapies in helping wound healing in diabetes. Wound medication in the form of an emulsion is an effective choice, because it can maintain the stability of the allicin and quercetin content and can make the wound environment moist.
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Affiliation(s)
- Agik Priyo Nusantoro
- Doctoral Program of Medical Science, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
- Department of Nursing, Faculty of Health Science, Universitas Kusuma Husada, Surakarta, Indonesia
| | - Kuntaman Kuntaman
- Department of Microbiology, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
| | - David Sontani Perdanakusuma
- Department of Reconstructive and Aesthetic Plastic Surgery, Faculty of Medicine, Universitas Airlangga, Surabaya, Indonesia
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11
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Wang X, Yang Y, Zhao W, Zhu Z, Pei X. Recent advances of hydrogels as smart dressings for diabetic wounds. J Mater Chem B 2024; 12:1126-1148. [PMID: 38205636 DOI: 10.1039/d3tb02355a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Chronic diabetic wounds have been an urgent clinical problem, and wound dressings play an important role in their management. Due to the design of traditional dressings, it is difficult to achieve adaptive adhesion and on-demand removal of complex diabetic wounds, real-time monitoring of wound status, and dynamic adjustment of drug release behavior according to the wound microenvironment. Smart hydrogels, as smart dressings, can respond to environmental stimuli and achieve more precise local treatment. Here, we review the latest progress of smart hydrogels in wound bandaging, dynamic monitoring, and drug delivery for treatment of diabetic wounds. It is worth noting that we have summarized the most important properties of smart hydrogels for diabetic wound healing. In addition, we discuss the unresolved challenges and future prospects in this field. We hope that this review will contribute to furthering progress on smart hydrogels as improved dressing for diabetic wound healing and practical clinical application.
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Affiliation(s)
- Xu Wang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu, 610041, Sichuan, China.
| | - Yuhan Yang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu, 610041, Sichuan, China.
| | - Weifeng Zhao
- College of Polymer Science and Engineering, The State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu, Sichuan 610065, China
| | - Zhou Zhu
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu, 610041, Sichuan, China.
| | - Xibo Pei
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3, South Peoples Road, Chengdu, 610041, Sichuan, China.
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12
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Chakraborty S, Shukla S, Rastogi M, Mund SS, Chowdhury A, Mukherjee C, Sahu K, Majumder SK. Evaluation of antimicrobial photodynamic action of a pluronic and pectin based film loaded with methylene blue against methicillin resistant Staphylococcus aureus. Biomed Mater 2024; 19:025004. [PMID: 38181448 DOI: 10.1088/1748-605x/ad1bb3] [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: 11/16/2023] [Accepted: 01/05/2024] [Indexed: 01/07/2024]
Abstract
Antimicrobial wound dressings play a crucial role in treatment of wound infections. However, existing commercial options fall short due to antibiotic resistance and the limited spectrum of activity of newly emerging antimicrobials against bacteria that are frequently encountered in wound infections. Antimicrobial photodynamic therapy (aPDT) is very promising alternative therapeutic approach against antibiotic resistant microbes such as methicillin resistantStaphylococcus aureus (MRSA). However, delivery of the photosensitizer (PS) homogeneously to the wound site is a challenge. Though polymeric wound dressings based on synthetic and biopolymers are being explored for aPDT, there is paucity of data regarding theirin vivoefficacy. Moreover, there are no studies on use of PS loaded, pluoronic (PL) and pectin (PC) based films for aPDT. We report development of a polymeric film for potential use in aPDT. The film was prepared using PL and PC via solvent casting approach and impregnated with methylene blue (MB) for photodynamic inactivation of MRSAin vitroandin vivo. Atomic force microscopic imaging of the films yielded vivid pictures of surface topography, with rough surfaces, pores, and furrows. The PL:PC ratio (2:3) was optimized that would result in an intact film but exhibit rapid release of MB in time scale suitable for aPDT. The film showed good antibacterial activity against planktonic suspension, biofilm of MRSA upon exposure to red light. Investigations on MRSA infected excisional wounds of mice reveal that topical application of MB loaded film for 30 min followed by red light exposure for 5 min (fluence; ∼30 J cm-2) or 10 min (fluence; ∼60 J cm-2) reduces ∼80% or ∼92% of bioburden, respectively. Importantly, the film elicits no significant cytotoxicity against keratinocytes and human adipose derived mesenchymal stem cells. Taken together, our data demonstrate that PS-loaded PL-PC based films are a promising new tool for treatment of MRSA infected wounds.
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Affiliation(s)
- Sourabrata Chakraborty
- Laser Biomedical Applications Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India
| | - Shivangi Shukla
- Laser Biomedical Applications Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India
| | - Mahima Rastogi
- Laser Biomedical Applications Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India
- Homi Bhabha National Institute (HBNI), Training School Complex, Anushakti Nagar, Mumbai 400 094, India
| | - Sai Sarbani Mund
- Laser Biomedical Applications Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India
- Homi Bhabha National Institute (HBNI), Training School Complex, Anushakti Nagar, Mumbai 400 094, India
| | - Anupam Chowdhury
- Laser Biomedical Applications Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India
| | - Chandrachur Mukherjee
- Homi Bhabha National Institute (HBNI), Training School Complex, Anushakti Nagar, Mumbai 400 094, India
- Optical Coating Lab, Raja Ramanna Centre for Advanced Technology, Indore 452013, India
| | - Khageswar Sahu
- Laser Biomedical Applications Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India
- Homi Bhabha National Institute (HBNI), Training School Complex, Anushakti Nagar, Mumbai 400 094, India
| | - Shovan Kumar Majumder
- Laser Biomedical Applications Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India
- Homi Bhabha National Institute (HBNI), Training School Complex, Anushakti Nagar, Mumbai 400 094, India
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13
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Dong D, Lv X, Jiang Q, Zhang J, Gu Z, Yu W, Han Z, Wang N, Hou W, Cheng Z. Multifunctional electrospun polycaprolactone/chitosan/hEGF/lidocaine nanofibers for the treatment of 2 stage pressure ulcers. Int J Biol Macromol 2024; 256:128533. [PMID: 38042313 DOI: 10.1016/j.ijbiomac.2023.128533] [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: 08/25/2023] [Revised: 11/29/2023] [Accepted: 11/29/2023] [Indexed: 12/04/2023]
Abstract
In this study, a multifunctional nanofiber dressing that can promote antibacterial, analgesic and healing was prepared by electrospinning technology. Hydrophobic polycaprolactone (PCL)/chitosan (CS)/lidocaine hydrochloride (LID) and epidermal growth factor (EGF) were used as scaffold materials and dissolved in trifluoroacetic acid to prepare spinning solution. The morphology of PCEL dressing was observed by scanning electron microscopy. The fiber structure was dense and the average diameter was 297.0 nm. The water absorption capacity test and water contact angle measurement showed that the fiber had good water absorption and hydrophilicity (1302 %, 139.258°). Drug release was 84 % within 60 h. In the results of antibacterial experiment, the dressing showed certain antibacterial properties. The results of cell experiments show that the dressing can promote cell proliferation. In addition, coagulation experiments showed that the dressing could quickly coagulate the blood within 4 min. In addition, PCEL dressing promoted collagen deposition and vascularization through animal models of pressure sores. Therefore, multifunctional dressing can be used as an ideal auxiliary means for the treatment of pressure sores, and it is a promising alternative to chronic wound healing.
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Affiliation(s)
- Dongxing Dong
- College of Resources and Environment, Jilin Agricultural University, Changchun 130118, People's Republic of China; Scientific and Technological Innovation Center of Health Products and Medical Materials with Characteristic Resources of Jilin Province, Changchun 130118, People's Republic of China
| | - Xiaoli Lv
- College of Resources and Environment, Jilin Agricultural University, Changchun 130118, People's Republic of China; Scientific and Technological Innovation Center of Health Products and Medical Materials with Characteristic Resources of Jilin Province, Changchun 130118, People's Republic of China.
| | - Qiushi Jiang
- State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xianning West Road, Xi'an 710049, People's Republic of China
| | - Jingjing Zhang
- College of Resources and Environment, Jilin Agricultural University, Changchun 130118, People's Republic of China; Scientific and Technological Innovation Center of Health Products and Medical Materials with Characteristic Resources of Jilin Province, Changchun 130118, People's Republic of China
| | - Zhengyi Gu
- College of Resources and Environment, Jilin Agricultural University, Changchun 130118, People's Republic of China
| | - Weimin Yu
- Scientific and Technological Innovation Center of Health Products and Medical Materials with Characteristic Resources of Jilin Province, Changchun 130118, People's Republic of China
| | - Zhaolian Han
- College of Resources and Environment, Jilin Agricultural University, Changchun 130118, People's Republic of China; Scientific and Technological Innovation Center of Health Products and Medical Materials with Characteristic Resources of Jilin Province, Changchun 130118, People's Republic of China
| | - Ning Wang
- College of Resources and Environment, Jilin Agricultural University, Changchun 130118, People's Republic of China; Scientific and Technological Innovation Center of Health Products and Medical Materials with Characteristic Resources of Jilin Province, Changchun 130118, People's Republic of China
| | - Wenli Hou
- Department of Cadre Ward, the First Hospital of Jilin University, 71 Xinmin Street, Chaoyang, Changchun 130021, People's Republic of China.
| | - Zhiqiang Cheng
- College of Resources and Environment, Jilin Agricultural University, Changchun 130118, People's Republic of China; Scientific and Technological Innovation Center of Health Products and Medical Materials with Characteristic Resources of Jilin Province, Changchun 130118, People's Republic of China
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14
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Shan J, Wang J, Lu D, Yu X, Zheng L, Zhang Y. Simplified dressing change after surgery for high anal fistula: A prospective, single centre randomized controlled study on loose combined cutting seton (LCCS) technique. Int Wound J 2024; 21:e14401. [PMID: 37709499 PMCID: PMC10788579 DOI: 10.1111/iwj.14401] [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: 07/09/2023] [Accepted: 08/31/2023] [Indexed: 09/16/2023] Open
Abstract
BACKGROUND Dressing change is the most important part of postoperative wound care. The aim of this study was to evaluate whether a more effective, simple and less painful method of dressing change for anal fistulas could be found without the need for debridement and packing. Data related to postoperative recovery were recorded at postoperative days 3, 7, 14, 21 and 180. METHODS In this experiment, 76 subjects diagnosed with high anal fistula were randomly divided into a simplified dressing change (SDC) group and a traditional debridement dressing change(TDDC) group according to a ratio of 1:1. RESULTS The SDC group had significantly fewer pain scores, bleeding rates, dressing change times, inpatient days and lower average inpatient costs than the TDDC group. There were no significant differences in wound healing time, area and depth and Wexner score between the two groups. CONCLUSIONS Studies have shown that the use of simplified dressing changes does not affect cure or recurrence rates, but significantly reduces dressing change times and pain during changes, reducing patient inpatient length of stay and costs.
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Affiliation(s)
- Jiaying Shan
- Department of Andrology, Dongzhimen HospitalBeijing University of Chinese MedicineBeijingChina
| | - Jin Wang
- Department of Andrology, Dongzhimen HospitalBeijing University of Chinese MedicineBeijingChina
| | - Dongdong Lu
- Department of Andrology, Dongzhimen HospitalBeijing University of Chinese MedicineBeijingChina
| | - Xudong Yu
- Department of Andrology, Dongzhimen HospitalBeijing University of Chinese MedicineBeijingChina
| | - Lihua Zheng
- Department of ProctologyChina‐Japan Friendship HospitalBeijingChina
| | - Yaosheng Zhang
- Department of Andrology, Dongzhimen HospitalBeijing University of Chinese MedicineBeijingChina
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15
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Yan Z, Zhang T, Wang Y, Xiao S, Gao J. Extracellular vesicle biopotentiated hydrogels for diabetic wound healing: The art of living nanomaterials combined with soft scaffolds. Mater Today Bio 2023; 23:100810. [PMID: 37810755 PMCID: PMC10550777 DOI: 10.1016/j.mtbio.2023.100810] [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: 07/31/2023] [Revised: 09/08/2023] [Accepted: 09/21/2023] [Indexed: 10/10/2023] Open
Abstract
Diabetic wounds (DWs) pose a major challenge for the public health system owing to their high incidence, complex pathogenesis, and long recovery time; thus, there is an urgent need to develop innovative therapies to accelerate the healing process of diabetic wounds. As natural nanovesicles, extracellular vesicles (EVs) are rich in sources with low immunogenicity and abundant nutritive molecules and exert potent therapeutic effects on diabetic wound healing. To avoid the rapid removal of EVs, a suitable delivery system is required for their controlled release. Owing to the advantages of high porosity, good biocompatibility, and adjustable physical and chemical properties of hydrogels, EV biopotentiated hydrogels can aid in achieving precise and favorable therapy against diabetic wounds. This review highlights the different design strategies, therapeutic effects, and mechanisms of EV biopotentiated hydrogels. We also discussed the future challenges and opportunities of using EV biopotentiated hydrogels for diabetic wound healing.
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Affiliation(s)
- Zhenzhen Yan
- Department of Burn Surgery, The First Affiliated Hospital of Naval Medical University, Shanghai, 200433, People's Republic of China
| | - Tinglin Zhang
- Changhai Clinical Research Unit, The First Affiliated Hospital of Naval Medical University, Shanghai, 200433, People's Republic of China
| | - Yuxiang Wang
- Department of Burn Surgery, The First Affiliated Hospital of Naval Medical University, Shanghai, 200433, People's Republic of China
| | - Shichu Xiao
- Department of Burn Surgery, The First Affiliated Hospital of Naval Medical University, Shanghai, 200433, People's Republic of China
| | - Jie Gao
- Changhai Clinical Research Unit, The First Affiliated Hospital of Naval Medical University, Shanghai, 200433, People's Republic of China
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16
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Jia X, Li J, Zheng Y, Yang X, Che T, Zhang J, Zhang Y, Zhang X, Wu Z. Dynamic Microenvironment-Adaptable Hydrogel with Photothermal Performance and ROS Scavenging for Management of Diabetic Ulcer. ACS APPLIED MATERIALS & INTERFACES 2023; 15:49974-49987. [PMID: 37870548 DOI: 10.1021/acsami.3c09182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
Persistent bacterial infections and excessive oxidative stress prevent the healing of diabetic ulcers, leading to an increased disability rate. Current treatments fail to kill bacteria while simultaneously relieving oxidative stress. Herein, a dynamic microenvironment-adaptable hydrogel (BP@CAu) with photothermal performance and reactive oxygen species scavenging is presented for diabetic ulcer healing. This hydrogel prepared using a dynamic borate-ester could respond to acidity in the infection microenvironment for a controllable drug release. An excellent photothermal conversion effect was integrated in the hydrogel, which exhibited strong antibacterial activity against Staphylococcus aureus and Pseudomonas aeruginosa. The hydrogel attenuated intracellular oxidative stress and inflammation and promoted cell migration. In a full-thickness skin defect model of diabetic rats, the BP@CAu hydrogel contributed to the fastest wound closure, with ideal reepithelialization, granulation tissue formation, and regeneration of blood vessels. Further mechanistic studies revealed that the hydrogel relieved oxidative stress and downregulated the expression of inflammatory cytokines, resulting in dramatic therapeutic effects on diabetic wounds. Therefore, this study provides a synergistic therapeutic strategy for efficient photothermal performance and reactive oxygen species scavenging in diabetic ulcers.
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Affiliation(s)
- Xinxin Jia
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
- Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin 300134, China
| | - Jie Li
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yin Zheng
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education; Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, China
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, Shandong 250021, China
| | - Xiaopeng Yang
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
- Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin 300134, China
| | - Tingting Che
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
- Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin 300134, China
| | - Jun Zhang
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education; Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, China
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, Shandong 250021, China
| | - Yuanyuan Zhang
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
- Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin 300134, China
| | - Xinge Zhang
- Key Laboratory of Functional Polymer Materials of Ministry of Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhongming Wu
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
- Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin 300134, China
- Key Laboratory of Endocrine Glucose & Lipids Metabolism and Brain Aging, Ministry of Education; Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, China
- Shandong Institute of Endocrine and Metabolic Diseases, Jinan, Shandong 250021, China
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17
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Moss R, Gorman M, LeBlanc J, Ritchie C, McDowell TK, Lowe J, Ettinger L, McSweeney MB. Evaluation of the sensory properties of thickened and protein-enhanced ice cream using check-all-that-apply and temporal check-all-that-apply. J Texture Stud 2023; 54:615-625. [PMID: 36967629 DOI: 10.1111/jtxs.12756] [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: 01/27/2023] [Revised: 03/20/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023]
Abstract
Ice cream formulations with varying amounts of added whey protein were created for those living with dysphagia in long-term care facilities (LTCs) to improve protein and fluid intake. The samples of thickened ice cream included a control (0% whey protein [WP]) and formulations with 6% (6WP), 8% (8WP), 10% (10WP), 12% (12WP) and 14% (14WP) added whey protein by volume. The consistency of the samples was assessed using the International Dysphagia Diet Standardization Initiative (IDDSI) Spoon Tilt Test, a sensory trial (n = 102) using hedonic scales and check-all-that-apply (CATA) and another sensory trial (n = 96) using temporal check-all-that-apply (TCATA). The whey protein increased the acceptability of the thickened ice cream except for the 12WP and 14WP formulations. The formulations with higher amounts of whey protein were associated with bitterness, custard/eggy flavor, and mouthcoating. The TCATA identified that the addition of whey protein led to slippery, gritty, and grainy attributes being perceived in the thickened ice cream. The study identified that 10% whey protein by volume can be added to thickened ice cream without impacting its' acceptability and the 6WP, 8WP, and 10WP formulations were liked significantly more than the control (without whey protein).
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Affiliation(s)
- Rachael Moss
- School of Nutrition and Dietetics, Acadia University, Wolfville, Nova Scotia, Canada
| | - Mackenzie Gorman
- School of Nutrition and Dietetics, Acadia University, Wolfville, Nova Scotia, Canada
| | - Jeanne LeBlanc
- School of Nutrition and Dietetics, Acadia University, Wolfville, Nova Scotia, Canada
| | - Christopher Ritchie
- School of Nutrition and Dietetics, Acadia University, Wolfville, Nova Scotia, Canada
| | - Taylor K McDowell
- School of Nutrition and Dietetics, Acadia University, Wolfville, Nova Scotia, Canada
| | - Judith Lowe
- School of Nutrition and Dietetics, Acadia University, Wolfville, Nova Scotia, Canada
| | - Laurel Ettinger
- School of Nutrition and Dietetics, Acadia University, Wolfville, Nova Scotia, Canada
| | - Matthew B McSweeney
- School of Nutrition and Dietetics, Acadia University, Wolfville, Nova Scotia, Canada
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18
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Lauterbach AL, Slezak AJ, Wang R, Cao S, Raczy MM, Watkins EA, Jimenez CJM, Hubbell JA. Mannose-Decorated Co-Polymer Facilitates Controlled Release of Butyrate to Accelerate Chronic Wound Healing. Adv Healthc Mater 2023; 12:e2300515. [PMID: 37503634 DOI: 10.1002/adhm.202300515] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 05/25/2023] [Indexed: 07/29/2023]
Abstract
Butyrate is a key bacterial metabolite that plays an important and complex role in modulation of immunity and maintenance of epithelial barriers. Its translation to clinic is limited by poor bioavailability, pungent smell, and the need for high doses, and effective delivery strategies have yet to realize clinical potential. Here, a novel polymeric delivery platform for tunable and sustainable release of butyrate consisting of a methacrylamide backbone with butyryl ester or phenyl ester side chains as well as mannosyl side chains, which is also applicable to other therapeutically relevant metabolites is reported. This platform's utility in the treatment of non-healing diabetic wounds is explored. This butyrate-containing material modulated immune cell activation in vitro and induced striking changes in the milieu of soluble cytokine and chemokine signals present within the diabetic wound microenvironment in vivo. This novel therapy shows efficacy in the treatment of non-healing wounds through the modulation of the soluble signals present within the wound, and importantly accommodates the critical temporal regulation associated with the wound healing process. Currently, the few therapies to address non-healing wounds demonstrate limited efficacy. This novel platform is positioned to address this large unmet clinical need and improve the closure of otherwise non-healing wounds.
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Affiliation(s)
- Abigail L Lauterbach
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
| | - Anna J Slezak
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
| | - Ruyi Wang
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
| | - Shijie Cao
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
| | - Michal M Raczy
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
| | - Elyse A Watkins
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
| | | | - Jeffrey A Hubbell
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL, 60637, USA
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19
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Hoen L, Pfeffer D, Schmidt JR, Kraft J, Hildebrand J, Kalkhof S. Hydration Status of Geriatric Patients Is Associated with Changes in Plasma Proteome, Especially in Proteins Involved in Coagulation. Nutrients 2023; 15:3789. [PMID: 37686821 PMCID: PMC10490147 DOI: 10.3390/nu15173789] [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: 07/24/2023] [Revised: 08/02/2023] [Accepted: 08/04/2023] [Indexed: 09/10/2023] Open
Abstract
Due to multifactorial reasons, such as decreased thirst and decreased total body water, elderly patients are vulnerable to dehydration. The study aims to investigate whether moderate dehydration or hyperhydration affects the blood proteome. Blood samples, medication, and bioelectrical impedance analysis (BIA) details were collected from 131 geriatric patients (77 women and 54 men aged 81.1 ± 7.2 years). Based on an evaluation by Bioelectrical Impedance Vector Analyses (BIVAs) of this cohort, for each hydration status (dehydrated, hyperhydrated, and control), five appropriate blood plasma samples for both males and females were analyzed by liquid chromatography-mass spectrometry (LC-MS). Overall, 262 proteins for female patients and 293 proteins for male patients could be quantified. A total of 38 proteins had significantly different abundance, showing that hydration status does indeed affect the plasma proteome. Protein enrichment analysis of the affected proteins revealed "Wound Healing" and "Keratinization" as the two main biological processes being dysregulated. Proteins involved in clot formation are especially affected by hydration status.
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Affiliation(s)
- Laura Hoen
- Institute for Bioanalysis, Coburg University of Applied Sciences and Arts, Friedrich-Streib-Str. 2, 96450 Coburg, Germany
| | - Daniel Pfeffer
- Institute for Bioanalysis, Coburg University of Applied Sciences and Arts, Friedrich-Streib-Str. 2, 96450 Coburg, Germany
- Division of Geriatrics, Klinikum Coburg GmbH, 96450 Coburg, Germany
| | - Johannes R. Schmidt
- Proteomics Unit, Department of Preclinical Development and Validation, Fraunhofer Institute for Cell Therapy and Immunology—IZI, Perlickstr. 1, 04103 Leipzig, Germany
| | - Johannes Kraft
- Division of Geriatrics, Klinikum Coburg GmbH, 96450 Coburg, Germany
| | - Janosch Hildebrand
- Institute for Bioanalysis, Coburg University of Applied Sciences and Arts, Friedrich-Streib-Str. 2, 96450 Coburg, Germany
| | - Stefan Kalkhof
- Institute for Bioanalysis, Coburg University of Applied Sciences and Arts, Friedrich-Streib-Str. 2, 96450 Coburg, Germany
- Proteomics Unit, Department of Preclinical Development and Validation, Fraunhofer Institute for Cell Therapy and Immunology—IZI, Perlickstr. 1, 04103 Leipzig, Germany
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20
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Xu R, Fang Y, Zhang Z, Cao Y, Yan Y, Gan L, Xu J, Zhou G. Recent Advances in Biodegradable and Biocompatible Synthetic Polymers Used in Skin Wound Healing. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5459. [PMID: 37570163 PMCID: PMC10419642 DOI: 10.3390/ma16155459] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/29/2023] [Accepted: 08/02/2023] [Indexed: 08/13/2023]
Abstract
The treatment of skin wounds caused by trauma and pathophysiological disorders has been a growing healthcare challenge, posing a great economic burden worldwide. The use of appropriate wound dressings can help to facilitate the repair and healing rate of defective skin. Natural polymer biomaterials such as collagen and hyaluronic acid with excellent biocompatibility have been shown to promote wound healing and the restoration of skin. However, the low mechanical properties and fast degradation rate have limited their applications. Skin wound dressings based on biodegradable and biocompatible synthetic polymers can not only overcome the shortcomings of natural polymer biomaterials but also possess favorable properties for applications in the treatment of skin wounds. Herein, we listed several biodegradable and biocompatible synthetic polymers used as wound dressing materials, such as PVA, PCL, PLA, PLGA, PU, and PEO/PEG, focusing on their composition, fabrication techniques, and functions promoting wound healing. Additionally, the future development prospects of synthetic biodegradable polymer-based wound dressings are put forward. Our review aims to provide new insights for the further development of wound dressings using synthetic biodegradable polymers.
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Affiliation(s)
- Ruojiao Xu
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou 310053, China; (R.X.); (Y.F.); (Z.Z.); (Y.C.); (Y.Y.); (L.G.)
| | - Yifeng Fang
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou 310053, China; (R.X.); (Y.F.); (Z.Z.); (Y.C.); (Y.Y.); (L.G.)
| | - Zhao Zhang
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou 310053, China; (R.X.); (Y.F.); (Z.Z.); (Y.C.); (Y.Y.); (L.G.)
| | - Yajie Cao
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou 310053, China; (R.X.); (Y.F.); (Z.Z.); (Y.C.); (Y.Y.); (L.G.)
| | - Yujia Yan
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou 310053, China; (R.X.); (Y.F.); (Z.Z.); (Y.C.); (Y.Y.); (L.G.)
| | - Li Gan
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou 310053, China; (R.X.); (Y.F.); (Z.Z.); (Y.C.); (Y.Y.); (L.G.)
| | - Jinbao Xu
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510030, China
| | - Guoying Zhou
- College of Life Science, Zhejiang Chinese Medical University, Hangzhou 310053, China; (R.X.); (Y.F.); (Z.Z.); (Y.C.); (Y.Y.); (L.G.)
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21
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Chhabra J, Chopra H, Pahwa R, Raina N, Wadhwa K, Saini S, Negi P, Gupta M, Singh I, Dureja H, Emran TB. Potential of nanoemulsions for accelerated wound healing: innovative strategies. Int J Surg 2023; 109:2365-2377. [PMID: 37158143 PMCID: PMC10442146 DOI: 10.1097/js9.0000000000000460] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 05/01/2023] [Indexed: 05/10/2023]
Abstract
Wounds represent various significant health concerns for patients and also contribute major costs to healthcare systems. Wound healing comprises of overlapped and various coordinated steps such as homeostasis, inflammation, proliferation, and remodeling. In response to the failure of many strategies in delivering intended results including wound closure, fluid loss control, and exhibiting properties such as durability, targeted delivery, accelerated action, along with histocompatibility, numerous nanotechnological advances have been introduced. To understand the magnitude of wound therapy, this systematic and updated review discussing the effectiveness of nanoemulsions has been undertaken. This review portrays mechanisms associated with wound healing, factors for delayed wound healing, and various technologies utilized to treat wounds effectively. While many strategies are available, nanoemulsions have attracted the tremendous attention of scientists globally for the research in wound therapy due to their long-term thermodynamic stability and bioavailability. Nanoemulsions not only aid in tissue repair, but are also considered as an excellent delivery system for various synthetic and natural actives. Nanotechnology provides several pivotal benefits in wound healing, including improved skin permeation, controlled release, and stimulation of fibroblast cell proliferation. The significant role of nanoemulsions in improved wound healing along with their preparation techniques has also been highlighted with special emphasis on mechanistic insights. This article illustrates recent research advancements for the utilization of nanoemulsions in wound treatment. An adequate literature search has been conducted using the keywords 'Nanoemulsions in wound healing', 'Wound therapy and nanoemulsions', 'Herbal actives in wound therapy', 'Natural oils and wounds treatment' etc., from PubMed, Science Direct, and Google Scholar databases. Referred and original publications in the English language accessed till April 2022 has been included, whereas nonEnglish language papers, unpublished data, and nonoriginal papers were excluded from the study.
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Affiliation(s)
- Jatin Chhabra
- Institute of Pharmaceutical Sciences, Kurukshetra University, Kurukshetra
| | - Hitesh Chopra
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Rakesh Pahwa
- Institute of Pharmaceutical Sciences, Kurukshetra University, Kurukshetra
| | - Neha Raina
- Department of Pharmaceutics, Delhi Pharmaceutical Sciences & Research University, New Delhi
| | - Karan Wadhwa
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana
| | - Swati Saini
- Institute of Pharmaceutical Sciences, Kurukshetra University, Kurukshetra
| | - Poonam Negi
- School of Pharmaceutical Sciences, Shoolini University, Solan, Himachal Pradesh, India
| | - Madhu Gupta
- Department of Pharmaceutics, Delhi Pharmaceutical Sciences & Research University, New Delhi
| | - Inderbir Singh
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Harish Dureja
- Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, Haryana
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong, Bangladesh
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka, Bangladesh
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22
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Yasin SNN, Said Z, Halib N, Rahman ZA, Mokhzani NI. Polymer-Based Hydrogel Loaded with Honey in Drug Delivery System for Wound Healing Applications. Polymers (Basel) 2023; 15:3085. [PMID: 37514474 PMCID: PMC10383286 DOI: 10.3390/polym15143085] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/01/2023] [Accepted: 05/18/2023] [Indexed: 07/30/2023] Open
Abstract
Excellent wound dressings should have crucial components, including high porosity, non-toxicity, high water absorption, and the ability to retain a humid environment in the wound area and facilitate wound healing. Unfortunately, current wound dressings hamper the healing process, with poor antibacterial, anti-inflammatory, and antioxidant activity, frequent dressing changes, low biodegradability, and poor mechanical properties. Hydrogels are crosslinked polymer chains with three-dimensional (3D) networks that have been applicable as wound dressings. They could retain a humid environment on the wound site, provide a protective barrier against pathogenic infections, and provide pain relief. Hydrogel can be obtained from natural, synthetic, or hybrid polymers. Honey is a natural substance that has demonstrated several therapeutic efficacies, including anti-inflammatory, antibacterial, and antioxidant activity, which makes it beneficial for wound treatment. Honey-based hydrogel wound dressings demonstrated excellent characteristics, including good biodegradability and biocompatibility, stimulated cell proliferation and reepithelization, inhibited bacterial growth, and accelerated wound healing. This review aimed to demonstrate the potential of honey-based hydrogel in wound healing applications and complement the studies accessible regarding implementing honey-based hydrogel dressing for wound healing.
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Affiliation(s)
- Siti Nor Najihah Yasin
- Department of Basic Sciences and Oral Biology, Faculty of Dentistry, Universiti Sains Islam Malaysia, Tower B, Persiaran MPAJ, Jalan Pandan Utama, Pandan Indah, Kuala Lumpur 55100, Malaysia
| | - Zulfahmi Said
- Department of Basic Sciences and Oral Biology, Faculty of Dentistry, Universiti Sains Islam Malaysia, Tower B, Persiaran MPAJ, Jalan Pandan Utama, Pandan Indah, Kuala Lumpur 55100, Malaysia
| | - Nadia Halib
- Department of Basic Sciences and Oral Biology, Faculty of Dentistry, Universiti Sains Islam Malaysia, Tower B, Persiaran MPAJ, Jalan Pandan Utama, Pandan Indah, Kuala Lumpur 55100, Malaysia
| | - Zulaiha A Rahman
- Department of Basic Sciences and Oral Biology, Faculty of Dentistry, Universiti Sains Islam Malaysia, Tower B, Persiaran MPAJ, Jalan Pandan Utama, Pandan Indah, Kuala Lumpur 55100, Malaysia
| | - Noor Izzati Mokhzani
- Department of Basic Sciences and Oral Biology, Faculty of Dentistry, Universiti Sains Islam Malaysia, Tower B, Persiaran MPAJ, Jalan Pandan Utama, Pandan Indah, Kuala Lumpur 55100, Malaysia
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23
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Scandorieiro S, Kimura AH, de Camargo LC, Gonçalves MC, da Silva JVH, Risso WE, de Andrade FG, Zaia CTBV, Lonni AASG, Dos Reis Martinez CB, Durán N, Nakazato G, Kobayashi RKT. Hydrogel-Containing Biogenic Silver Nanoparticles: Antibacterial Action, Evaluation of Wound Healing, and Bioaccumulation in Wistar Rats. Microorganisms 2023; 11:1815. [PMID: 37512989 PMCID: PMC10383514 DOI: 10.3390/microorganisms11071815] [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: 05/30/2023] [Revised: 06/20/2023] [Accepted: 06/26/2023] [Indexed: 07/30/2023] Open
Abstract
Wound infections are feared complications due to their potential to increase healthcare costs and cause mortality since multidrug-resistant bacteria reduce treatment options. This study reports the development of a carbomer hydrogel containing biogenic silver nanoparticles (bioAgNPs) and its effectiveness in wound treatment. This hydrogel showed in vitro bactericidal activity after 2 h, according to the time-kill assay. It also reduced bacterial contamination in rat wounds without impairing their healing since the hydrogel hydrophilic groups provided hydration for the injured skin. The high number of inflammatory cells in the first days of the skin lesion and the greater degree of neovascularization one week after wound onset showed that the healing process occurred normally. Furthermore, the hydrogel-containing bioAgNPs did not cause toxic silver accumulation in the organs and blood of the rats. This study developed a bioAgNP hydrogel for the treatment of wounds; it has a potent antimicrobial action without interfering with cicatrization or causing silver bioaccumulation. This formulation is effective against bacteria that commonly cause wound infections, such as Pseudomonas aeruginosa and Staphylococcus aureus, and for which new antimicrobials are urgently needed, according to the World Health Organization's warning.
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Affiliation(s)
- Sara Scandorieiro
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
- Laboratory of Innovation and Cosmeceutical Technology, Department of Pharmaceutical Sciences, Center of Health Sciences, University Hospital of Londrina, Londrina 86038-350, Brazil
| | - Angela Hitomi Kimura
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - Larissa Ciappina de Camargo
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - Marcelly Chue Gonçalves
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - João Vinícius Honório da Silva
- Laboratory of Histopathological Analysis, Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - Wagner Ezequiel Risso
- Laboratory of Animal Ecophysiology, Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - Fábio Goulart de Andrade
- Laboratory of Histopathological Analysis, Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - Cássia Thaïs Bussamra Vieira Zaia
- Laboratory of Neuroendocrine Physiology and Metabolism, Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - Audrey Alesandra Stinghen Garcia Lonni
- Laboratory of Innovation and Cosmeceutical Technology, Department of Pharmaceutical Sciences, Center of Health Sciences, University Hospital of Londrina, Londrina 86038-350, Brazil
| | - Claudia Bueno Dos Reis Martinez
- Laboratory of Animal Ecophysiology, Department of Physiological Sciences, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - Nelson Durán
- Institute of Biology, State University of Campinas, Campinas 13083-862, Brazil
| | - Gerson Nakazato
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
| | - Renata Katsuko Takayama Kobayashi
- Laboratory of Basic and Applied Bacteriology, Department of Microbiology, Center of Biological Sciences, State University of Londrina, Londrina 86057-970, Brazil
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24
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Mansour H, Elsigeny SM, Elshami FI, Auf M, Shaban SY, van Eldik R. Microstructure, Physical and Biological Properties, and BSA Binding Investigation of Electrospun Nanofibers Made of Poly(AA-co-ACMO) Copolymer and Polyurethane. Molecules 2023; 28:molecules28093951. [PMID: 37175361 PMCID: PMC10180346 DOI: 10.3390/molecules28093951] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/05/2023] [Accepted: 05/06/2023] [Indexed: 05/15/2023] Open
Abstract
In this study, poly(AA-co-ACMO) and polyurethane-based nanofibers were prepared in a ratio of 1:1 (NF11) and 2:1 (NF21) as antimicrobial carriers for chronic wound management. Different techniques were used to characterize the nanofibers, and poly(AA-co-ACMO) was mostly found on the surface of PU. With an increase in poly(AA-co-ACMO) dose from 0 (PU) and 1:1 (NF11) to 2:1 (NF21) in the casting solution, the contact angle (CA) was reduced from 137 and 95 to 24, respectively, and hydrophilicity was significantly increased. As most medications inhibit biological processes by binding to a specific protein, in vitro protein binding was investigated mechanistically using a stopped-flow technique. Both NF11 and NF21 bind to BSA via two reversible steps: a fast second-order binding followed by a slow first-order one. The overall parameters for NF11 (Ka = 1.1 × 104 M-1, Kd = 89.0 × 10-6, ΔG0 = -23.1 kJ mol-1) and NF21 (Ka = 189.0 × 104 M-1, Kd = 5.3 × 10-6 M, ΔG0 = -27.5 kJ mol-1) were determined and showed that the affinity for BSA is approximately (NF11)/(NF21) = 1/180. This indicates that NF21 has much higher BSA affinity than NF11, although BSA interacts with NF11 much faster. NF21 with higher hydrophilicity showed effective antibacterial properties compared to NF11, in agreement with kinetic data. The study provided an approach to manage chronic wounds and treating protein-containing wastewater.
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Affiliation(s)
- Hanaa Mansour
- Chemistry Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Samia M Elsigeny
- Chemistry Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Fawzia I Elshami
- Chemistry Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Mohamed Auf
- Chemistry Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Shaban Y Shaban
- Chemistry Department, Faculty of Science, Kafrelsheikh University, Kafrelsheikh 33516, Egypt
| | - Rudi van Eldik
- Department of Chemistry and Pharmacy, University of Erlangen-Nuremberg, 91058 Erlangen, Germany
- Faculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland
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25
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Xia H, Hu Q, Yang Y, Yuan H, Cai Y, Liu Z, Xu Z, Xiong Y, Zhou J, Ye Q, Zhong Z. Effect of Matrix Metalloproteinase 23 Accelerating Wound Healing Induced by Hydroxybutyl Chitosan. ACS APPLIED BIO MATERIALS 2023; 6:1460-1470. [PMID: 36921248 DOI: 10.1021/acsabm.2c01008] [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: 03/17/2023]
Abstract
Skin wounds may cause severe financial and social burden due to the difficulties in wound healing. Original inert dressings cannot meet multiple needs in the process of wound healing. Therefore, the development of materials to accelerate healing progress is essential and urgent. In the previous study, we found that the homogeneously synthesized hydroxybutyl chitosan (HBCS) had an effective performance in promoting wound healing. Proteomic analysis of the same specimen suggested that matrix metalloproteinase 23 (MMP23) may play a key role in HBCS expediting the progress of wound healing. In this work, we aim to reveal the underlying mechanism of MMP23 in the dynamic process of cutaneous proliferation and repair period. In order to regulate the expression level of MMP23 in the local wound area, we leaded in adeno-associated virus (AAV) to specifically decreased expression quantity of MMP23 in rat skin. In contrast to the negative control groups, we found that the wound closed faster and the collagen fibers and neovascularization were significantly increased in AAV groups. These findings highlighted that MMP23 was involved in wound healing after traumatic injury, and managing the expression of MMP23 could be a potential intervention target to accelerate wound healing.
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Affiliation(s)
- Haoyang Xia
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Engineering Research Center of Natural Polymer-based Medical Materials in Hubei Province, Wuhan 430071, China
| | - Qianchao Hu
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Engineering Research Center of Natural Polymer-based Medical Materials in Hubei Province, Wuhan 430071, China
| | - Yi Yang
- College of Health Science, Wuhan Sports University, Wuhan 430079, China
| | - Haoran Yuan
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Engineering Research Center of Natural Polymer-based Medical Materials in Hubei Province, Wuhan 430071, China
| | - Yan Cai
- Department of Chemistry, Hubei Engineering Center of Natural Polymers-based Medical Materials, Key Laboratory of Biomedical Polymers of Ministry of Education, Wuhan University, Wuhan 430072, China
| | - Zhongzhong Liu
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Engineering Research Center of Natural Polymer-based Medical Materials in Hubei Province, Wuhan 430071, China
| | - Zhigao Xu
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Engineering Research Center of Natural Polymer-based Medical Materials in Hubei Province, Wuhan 430071, China
| | - Yan Xiong
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Engineering Research Center of Natural Polymer-based Medical Materials in Hubei Province, Wuhan 430071, China
| | - Jinping Zhou
- Department of Chemistry, Hubei Engineering Center of Natural Polymers-based Medical Materials, Key Laboratory of Biomedical Polymers of Ministry of Education, Wuhan University, Wuhan 430072, China
| | - Qifa Ye
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Engineering Research Center of Natural Polymer-based Medical Materials in Hubei Province, Wuhan 430071, China.,Transplantation Medicine Engineering and Technology Research Center, National Health Commission, The 3rd Xiangya Hospital of Central South University, Changsha 410013, China
| | - Zibiao Zhong
- Zhongnan Hospital of Wuhan University, Institute of Hepatobiliary Diseases of Wuhan University, Transplant Center of Wuhan University, Hubei Key Laboratory of Medical Technology on Transplantation, Engineering Research Center of Natural Polymer-based Medical Materials in Hubei Province, Wuhan 430071, China
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26
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Anadkat MJ, Lacouture M, Friedman A, Horne ZD, Jung J, Kaffenberger B, Kalmadi S, Ovington L, Kotecha R, Abdullah HI, Grosso F. Expert guidance on prophylaxis and treatment of dermatologic adverse events with Tumor Treating Fields (TTFields) therapy in the thoracic region. Front Oncol 2023; 12:975473. [PMID: 36703794 PMCID: PMC9873416 DOI: 10.3389/fonc.2022.975473] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 09/23/2022] [Indexed: 01/06/2023] Open
Abstract
Tumor Treating Fields (TTFields) are electric fields, delivered via wearable arrays placed on or near the tumor site, that exert physical forces to disrupt cellular processes critical for cancer cell viability and tumor progression. As a first-in-class treatment, TTFields therapy is approved for use in newly diagnosed glioblastoma, recurrent glioblastoma, and pleural mesothelioma. Additionally, TTFields therapy is being investigated in non-small cell lung cancer (NSCLC), brain metastases from NSCLC, pancreatic cancer, ovarian cancer, hepatocellular carcinoma, and gastric adenocarcinoma. Because TTFields therapy is well tolerated and delivery is locoregional, there is low risk of additive systemic adverse events (AEs) when used with other cancer treatment modalities. The most common AE associated with TTFields therapy is mild-to-moderate skin events, which can be treated with topical agents and may be managed without significant treatment interruptions. Currently, there are no guidelines for oncologists regarding the management of TTFields therapy-related skin AEs in the thoracic region, applicable for patients with pleural mesothelioma or NSCLC. This publication aims to provide guidance on preventing, minimizing, and managing dermatologic AEs in the thoracic region to help improve patient quality of life and reduce treatment interruptions that may impact outcomes with TTFields therapy.
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Affiliation(s)
- Milan J. Anadkat
- Division of Dermatology, Department of Medicine, Washington University, St. Louis, MO, United States,*Correspondence: Milan J. Anadkat,
| | - Mario Lacouture
- Dermatology Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, United States
| | - Adam Friedman
- Division of Dermatology, Department of Medicine, George Washington University School of Medicine and Health Sciences, Washington, DC, United States
| | - Zachary D. Horne
- Department of Radiation Oncology, Allegheny Health Network Cancer Institute, Pittsburgh, PA, United States
| | - Jae Jung
- Department of Dermatology, Norton Healthcare, Louisville, KY, United States
| | | | - Sujith Kalmadi
- Oncology and Haematology Department, Ironwood Cancer & Research Center, Chandler, AZ, United States
| | - Liza Ovington
- Ovington & Associates, Walnutport, PA, United States
| | - Rupesh Kotecha
- Miami Cancer Institute, Baptist Health South Florida, Miami, FL, United States
| | | | - Federica Grosso
- Mesothelioma Unit, SS Antonio e Biagio General Hospital, Alessandria, Italy
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27
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Zhang R, Wang S, Ma X, Jiang S, Chen T, Du Y, Cheng M, Liu J, Yuan Y, Ye T, Wang S. In situ gelation strategy based on ferrocene-hyaluronic acid organic copolymer biomaterial for exudate management and multi-modal wound healing. Acta Biomater 2022; 154:180-193. [PMID: 36243366 DOI: 10.1016/j.actbio.2022.09.076] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 09/13/2022] [Accepted: 09/29/2022] [Indexed: 12/14/2022]
Abstract
Exudate management remains a major concern in slow or non-healing wound management. Therefore, there is a need to devise a massive exudate-absorbing, exudate-locking, and stable extracellular matrix structure-maintaining functional wound dressing. Inspired by metal-organic frameworks, we chemically introduced sandwich ferrocene (Fc) into hyaluronic acid (HA) to fabricate an innovative metal Fc-HA organic copolymer (FHoC) as the skeleton material for in situ gelation, which was then gently compressed into a pre-hydrogel patch (FHoCP). Fc promoted the rearrangement of polymer chains to form additional microcrystalline and hydrophobic regions, which improved hydrogel transition and the exudate-locking ability. Thus, the simple composition FHoCP(5) absorbed 150 times its weight of water and maintained a firm three-dimensional network, which contributed to reducing inflammation and acted as a physical barrier against hemostasis and anti-bacterial invasion. Meanwhile, multi-modal processes, including fibroblast migration, angiogenesis, and antibacterial effects, were integrated into the gelled FHoCP(5) guided by Fe to promote wound healing. This study suggested that FHoC biomaterial could accelerate the closure of chronic wounds. We believe that this unique FHoCP(5)-based in situ gelation strategy could provide a solid drug-loaded scaffold for cell or adjunctive drug therapies, which holds great potential for the development of multifunctional biomaterials. STATEMENT OF SIGNIFICANCE: Hydrogels that absorb excessive exudates while maintaining stable ECM-like network as well as exert multimodal wound healing activities are ideal dressings for accelerating chronic wound contraction. Herein, we reported an innovative metal ferrocene-hyaluronic acid organic copolymer patch (FHoCP) and FHoCP-mediated in situ gelation strategy. Ferrocene (Fc) induced in situ gelation by promoting polymer chain rearrangement, acting as a physical barrier for hemostasis and anti-bacterial invasion, and absorbing massive exudates, resulting in reducing delayed inflammation. As the structural core, rigid Fc enhanced the stability of the hydrogel backbone, and hydrophobic Fc improved fibroblast migration. In addition, Fe2+ chemically inhibited bacteria and increased angiogenesis. These results indicated the potential of FHoCP-based hydrogel for application in clinical skin reconstruction.
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Affiliation(s)
- Rui Zhang
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Sixue Wang
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Xiaofan Ma
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Shan Jiang
- Chinese medicine (traditional Chinese medicine preparation direction), College of traditional Chinese Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Taoxi Chen
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Yuhao Du
- Chinese medicine (traditional Chinese medicine preparation direction), College of traditional Chinese Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Muhua Cheng
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China
| | - Jun Liu
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China; Shenyang Junhong Pharmaceutical Co., Ltd., Shenyang, Liaoning, China
| | - Yue Yuan
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Tiantian Ye
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China.
| | - Shujun Wang
- Department of Pharmaceutics, College of Pharmacy, Shenyang Pharmaceutical University, Shenyang 110016, China.
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Carvalho CDS, Bernardes MJC, Gonçalves RC, Vilela MS, da Silva MVM, Oliveira VDS, da Rocha MR, Vinaud MC, Galdino H, Lino RDS. Treatment of experimentally induced partial-thickness burns in rats with different silver-impregnated dressings. Acta Cir Bras 2022; 37:e370801. [PMID: 36449949 PMCID: PMC9708113 DOI: 10.1590/acb370801] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 07/20/2022] [Indexed: 11/29/2022] Open
Abstract
PURPOSE To evaluate the morphometric, macroscopic and microscopic aspects of experimentally induced partial-thickness burns in rats treated with different silver-based dressings. METHODS Wistar rats were used, divided into six treatments: saline (NaCl 0.9%); silver sulfadiazine 1%; Silvercel; Mepilex Ag; Aquacel Ag and Acticoat. The animals were monitored daily and euthanized at 7, 14 and 30 days after injury induction (DAI). RESULTS At 7 DAI, necrosis/crust was greater in control, silver sulfadiazine and Mepilex Ag treatments, granulation tissue was induced by Aquacel Ag, polymorphonuclear infiltrate (PMN) infiltration was intensified by Mepilex Ag; mononuclear infiltrate (MN) infiltration and angiogenesis were increased by Silvercel. At 14 DAI, hemorrhage was decreased by Silvercel and Mepilex Ag, PMN infiltration increased by Acticoat. At 30 DAI, angiogenesis was greater in the Acticoat treatment and fibroblasts were increased by Acticoat and Mepilex Ag. Collagen was induced at 14 DAI by silver sulfadiazine and Aquacel Ag and, at 30 DAI, by silver sulfadiazine and Silvercel treatments. CONCLUSIONS Silvercel and Acticoat presented better results than the other products. However, all the dressings were better than the control at some point during the process, and may contribute to the healing of partial thickness burns. Silvercel and Aquacel Ag treatments induced better cosmetic outcomes regarding wound closure and scarring.
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Affiliation(s)
- Carolyna de Sousa Carvalho
- MSc. Universidade Federal de Goiás – Tropical Pathology and Public Health Institute – Tropical Medicine and Public Health Graduation Program – Goiânia (GO), Brazil
| | - Milton Junio Cândido Bernardes
- PhD. Universidade Federal de Goiás – Tropical Pathology and Public Health Institute – Biology of the Host-Parasite Relationship Graduation Program – Goiânia (GO), Brazil
| | - Randys Caldeira Gonçalves
- MSc. Universidade Federal de Goiás – Tropical Pathology and Public Health Institute – Tropical Medicine and Public Health Graduation Program – Goiânia (GO), Brazil
| | | | | | - Vinicius da Silva Oliveira
- Graduate student. Universidade Federal de Goiás – Medicine School – Medicine Course – Goiânia (GO), Brazil
| | - Marcelo Ribeiro da Rocha
- Graduate student. Universidade Federal de Goiás – Medicine School – Medicine Course – Goiânia (GO), Brazil
| | - Marina Clare Vinaud
- PhD. Universidade Federal de Goiás – Tropical Pathology and Public Health Institute – Biosciences Department – Goiânia (GO), Brazil
| | - Hélio Galdino
- PhD. Universidade Federal de Goiás – Nursing School – Goiânia (GO), Brazil
| | - Ruy de Souza Lino
- PhD. Universidade Federal de Goiás – Tropical Pathology and Public Health Institute – Biosciences Department – Goiânia (GO), Brazil.,Corresponding author:
- (55 62) 3209-6113
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Qian S, Wang J, Liu Z, Mao J, Zhao B, Mao X, Zhang L, Cheng L, Zhang Y, Sun X, Cui W. Secretory Fluid-Aggregated Janus Electrospun Short Fiber Scaffold for Wound Healing. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2200799. [PMID: 35266631 DOI: 10.1002/smll.202200799] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Indexed: 06/14/2023]
Abstract
Exudate management is critical to improve chronic wound healing. Herein, inspired by a Janus-structured lotus leaf with asymmetric wettability, a Janus electrospun short fiber scaffold is fabricated via electrospinning technologies and short fiber modeling. This scaffold is composed of hydrophilic 2D curcumin-loaded electrospun fiber and hydrophobic 3D short fiber via layer-by-layer assembly and electrostatic interactions which can aggregate the wound exudate by pumping from the hydrophobic layer to the hydrophilic via multiple contact points between hydrophilic and hydrophobic fibers, and simultaneously trigger the cascade release of curcumin in the upper 2D electrospun fiber. The 3D short fiber with high porosity and hydrophobicity can quickly aggregate exudate within 30 s after compounding with hydrophilic 2D electrospun fiber via a spontaneous pump. In vitro experiments show that Janus electrospun short fiber has good biocompatibility, and the cascade release of curcumin can significantly promote the proliferation and migration of fibroblasts. In vivo experiments show that it can trigger cascade release of curcumin by aggregating wound exudate, so as to accelerate wound healing process and promote collagen deposition and vascularization. Hence, this unique biometric Janus scaffold provides an alternative for chronic wound healing.
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Affiliation(s)
- Shutong Qian
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, 639 Zhi Zao Ju Road, Shanghai, 200011, P. R. China
| | - Juan Wang
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, P. R. China
| | - Zhimo Liu
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, 639 Zhi Zao Ju Road, Shanghai, 200011, P. R. China
| | - Jiayi Mao
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, 639 Zhi Zao Ju Road, Shanghai, 200011, P. R. China
| | - Binfan Zhao
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, 639 Zhi Zao Ju Road, Shanghai, 200011, P. R. China
| | - Xiyuan Mao
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, 639 Zhi Zao Ju Road, Shanghai, 200011, P. R. China
| | - Liucheng Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, 639 Zhi Zao Ju Road, Shanghai, 200011, P. R. China
| | - Liying Cheng
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, 639 Zhi Zao Ju Road, Shanghai, 200011, P. R. China
| | - Yuguang Zhang
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, 639 Zhi Zao Ju Road, Shanghai, 200011, P. R. China
| | - Xiaoming Sun
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, 639 Zhi Zao Ju Road, Shanghai, 200011, P. R. China
| | - Wenguo Cui
- Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, 639 Zhi Zao Ju Road, Shanghai, 200011, P. R. China
- Department of Orthopaedics, Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases, Shanghai Institute of Traumatology and Orthopaedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, 197 Ruijin 2nd Road, Shanghai, 200025, P. R. China
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Rippon MG, Mikosiński J, Rogers AA. HydroTac-a hydro-responsive wound dressing: a review of the in vitro evidence. J Wound Care 2022; 31:540-547. [PMID: 35797259 DOI: 10.12968/jowc.2022.31.7.540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
AIM The aim of this review is to identify and summarise the key in vitro evidence available to support the use of HydroTac (HRWD-2) to address specific aspects associated with the treatment of both acute and hard-to-heal wounds. BACKGROUND The provision of a moist wound healing environment to support optimal wound healing has been a basic tenet in wound care since the pioneering work on the benefits of occlusion to support wound healing. Modern wound dressings have adopted the benefits of moist healing through their innovative development. HRWD-2 has been shown in clinical studies to enable and support good healing outcomes and the in vitro evidence in support of this dressing is presented in this article. METHOD An online literature search (supplemented with a manual search of resources not available online) was conducted to identify articles and studies describing in vitro evidence in support of HRWD-2 in aspects important for promoting a healing response in the clinical environment. RESULTS In vitro studies showed that HRWD-2 contributes to balancing moisture levels and enhances the availability of growth factors known to be important for re-epithelialisation. Pre-clinical studies indicate that HRWD-2 enhances wound re-epithelialisation. Together these results suggest that HRWD-2 promotes a moist healing environment leading to the dressing supporting re-epithelialisation. In vitro data indicating an intrinsic lower in vitro adherence of HRWD-2 likely translate clinically to the benefits of an atraumatic wound dressing, including reduced pain (specifically at dressing change). CONCLUSION The in vitro evidence presented in this review supports the successful clinical results reported for HRWD-2 in terms of fluid management, wound healing and pain reduction at dressing change.
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Affiliation(s)
- Mark G Rippon
- University of Huddersfield, Queensgate, Huddersfield, UK
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31
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Ojo OE, Ilomuanya MO, Sekunowo OI, Gbenebor OP, Adeosun SO. Development and characterization of mupirocin encapsulated in animal bone-derived hydroxyapatite for management of chronic wounds. BENI-SUEF UNIVERSITY JOURNAL OF BASIC AND APPLIED SCIENCES 2022. [DOI: 10.1186/s43088-022-00262-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Hydroxyapatite is an important biomedical material used in drug delivery owing to its excellent bioactivity and biocompatibility. In this study, hydroxyapatite isolated from bovine and caprine bones was capped and used as a drug carrier to encapsulate mupirocin as an active pharmaceutical product in hydrogel formulations which were utilized in wound healing application using animal model (Wistar Rats).
Results
Characterization of the mupirocin-encapsulated hydroxyapatite using Fourier transform infrared spectroscopy, and X-ray diffractometer revealed the active presence of mupirocin after encapsulation. The in-vitro drug release study revealed that the capped hydroxyapatite obtained from caprine bone loaded with mupirocin gave drug release rate of 84.67% of the drug within 75 min while conventional mupirocin ointment had the lowest at 27.04% within the same time. The capped hydroxyapatite obtained from bovine bone loaded with mupirocin had the highest encapsulation efficiency of 73.67%. However, the animals treated with formulation prepared from capped hydroxyapatite obtained from caprine bone loaded with mupirocin had the highest wound closure area of 377.8 mm2, while conventional mupirocin ointment had 231.5 mm2 in 16 days of treatment. All the formulations with mupirocin except the ointment showed excellent resistance against Klebsiella pneumonia and Staphylococcus aureus of about 40 mm of inhibition zone.
Conclusions
The mupirocin encapsulated in hydroxyapatite extracted from bovine and caprine bones has been demonstrated to be more superior to the conventional ointment in the management of chronic wound conditions.
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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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Composite Membrane Dressings System with Metallic Nanoparticles as an Antibacterial Factor in Wound Healing. MEMBRANES 2022; 12:membranes12020215. [PMID: 35207136 PMCID: PMC8876280 DOI: 10.3390/membranes12020215] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/26/2022] [Accepted: 02/09/2022] [Indexed: 02/04/2023]
Abstract
Wound management is the burning problem of modern medicine, significantly burdening developed countries’ healthcare systems. In recent years, it has become clear that the achievements of nanotechnology have introduced a new quality in wound healing. The application of nanomaterials in wound dressing significantly improves their properties and promotes the healing of injuries. Therefore, this review paper presents the subjectively selected nanomaterials used in wound dressings, including the metallic nanoparticles (NPs), and refers to the aspects of their application as antimicrobial factors. The literature review was supplemented with the results of our team’s research on the elements of multifunctional new-generation dressings containing nanoparticles. The wound healing multiple molecular pathways, mediating cell types, and affecting agents are discussed herein. Moreover, the categorization of wound dressings is presented. Additionally, some materials and membrane constructs applied in wound dressings are described. Finally, bacterial participation in wound healing and the mechanism of the antibacterial function of nanoparticles are considered. Membranes involving NPs as the bacteriostatic factors for improving wound healing of skin and bones, including our experimental findings, are discussed in the paper. In addition, some studies of our team concerning the selected bacterial strains’ interaction with material involving different metallic NPs, such as AuNPs, AgNPs, Fe3O4NPs, and CuNPs, are presented. Furthermore, nanoparticles’ influence on selected eukaryotic cells is mentioned. The ideal, universal wound dressing still has not been obtained; thus, a new generation of products have been developed, represented by the nanocomposite materials with antibacterial, anti-inflammatory properties that can influence the wound-healing process.
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Douglas P. Re-thinking lactation-related nipple pain and damage. WOMEN'S HEALTH (LONDON, ENGLAND) 2022; 18:17455057221087865. [PMID: 35343816 PMCID: PMC8966064 DOI: 10.1177/17455057221087865] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/14/2023]
Abstract
Nipple pain is a common reason for premature cessation of breastfeeding. Despite the benefits of breastfeeding for both infant and mother, clinical support for problems such as maternal nipple pain remains a research frontier. Maternal pharmaceutical treatments, and infant surgery and bodywork interventions are commonly recommended for lactation-related nipple pain without evidence of benefit. The pain is frequently attributed to mammary dysbiosis, candidiasis, or infant anatomic anomaly (including to diagnoses of posterior or upper lip-tie, high palate, retrognathia, or subtle cranial nerve abnormalities). Although clinical protocols universally state that improved fit and hold is the mainstay of treatment of nipple pain and wounds, the biomechanical parameters of pain-free fit and hold remain an omitted variable bias in almost all clinical breastfeeding research. This article reviews the research literature concerning aetiology, classification, prevention, and management of lactation-related nipple-areolar complex (NAC) pain and damage. Evolutionary and complex systems perspectives are applied to develop a narrative synthesis of the heterogeneous and interdisciplinary evidence elucidating nipple pain in breastfeeding women. Lactation-related nipple pain is most commonly a symptom of inflammation due to repetitive application of excessive mechanical stretching and deformational forces to nipple epidermis, dermis and stroma during milk removal. Keratinocytes lock together when mechanical forces exceed desmosome yield points, but if mechanical loads continue to increase, desmosomes may rupture, resulting in inflammation and epithelial fracture. Mechanical stretching and deformation forces may cause stromal micro-haemorrhage and inflammation. Although the environment of the skin of the nipple-areolar complex is uniquely conducive to wound healing, it is also uniquely exposed to environmental risks. The two key factors that both prevent and treat nipple pain and inflammation are, first, elimination of conflicting vectors of force during suckling or mechanical milk removal, and second, elimination of overhydration of the epithelium which risks moisture-associated skin damage. There is urgent need for evaluation of evidence-based interventions for the elimination of conflicting intra-oral vectors of force during suckling.
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Affiliation(s)
- Pamela Douglas
- School of Nursing and Midwifery, Griffith University, Brisbane, QLD, Australia
- General Practice Clinical Unit, The University of Queensland, Brisbane, QLD, Australia
- Possums & Co., Brisbane, QLD, Australia
- Pamela Douglas, c/o Possums & Co., PO Box 5139, Brisbane, West End QLD 4101, Australia.
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Grigoryan AY, Bezhin AI, Pankrusheva TA, Sukovatykh BS. [Local management of purulent wounds with wound dressings]. Khirurgiia (Mosk) 2022:42-48. [PMID: 36398954 DOI: 10.17116/hirurgia202211142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Purulent-inflammatory lesions of skin and soft tissues account for 30-35% of causes of admission to surgical hospitals. In outpatient system, this value reaches 35-60%. Moreover, suppuration of wounds after elective surgery occurs in 2-5% of cases. Adequately selected drugs for local wound therapy can achieve localization of purulent process and avoid spread of infection. This review summarizes data on development, experimental and clinical testing of wound dressings over the past 10 years, presents classification options and analyzes their advantages and disadvantages. The authors emphasize higher efficacy of hydrophilic coatings, and coatings based on chitosan, collagen, methylcellulose and its derivatives are preferred. It is advisable to introduce a component with antimicrobial, anesthetic and hemostatic activity stimulating tissue regeneration into the matrix of wound dressing. The priority is introduction of antiseptic substances causing fewer side effects compared to antibiotics. Further research and development of new wound dressings is a priority in surgery considering changing landscape and development of resistance of microorganisms.
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Affiliation(s)
| | - A I Bezhin
- Kursk State Medical University, Kursk, Russia
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36
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Amiri N, Golin AP, Jalili RB, Ghahary A. Roles of cutaneous cell-cell communication in wound healing outcome: An emphasis on keratinocyte-fibroblast crosstalk. Exp Dermatol 2021; 31:475-484. [PMID: 34932841 DOI: 10.1111/exd.14516] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 11/28/2021] [Accepted: 12/19/2021] [Indexed: 01/13/2023]
Abstract
Tissue repair is a very complex event and involves a continuously orchestrated sequence of signals and responses from platelets, fibroblasts, epithelial, endothelial and immune cells. The details of interaction between these signals, which are mainly growth factors and cytokines, have been widely discussed. However, it is still not clear how activated cells at wound sites lessen their activities after epithelialization is completed. Termination of the wound healing process requires a fine balance between extracellular matrix (ECM) deposition and degradation. Maintaining this balance requires highly accurate epithelial-mesenchymal communication and correct information exchange between keratinocytes and fibroblasts. As it has been reported in the literature, a disruption in epithelialization during the process of wound healing increases the frequency of developing chronic wounds or fibrotic conditions, as seen in a variety of clinical cases. Conversely, the potential stop signal for wound healing should have a regulatory role on both ECM synthesis and degradation to reach a successful wound healing outcome. This review briefly describes the potential roles of growth factors and cytokines in controlling the early phase of wound healing and predominantly explores the role of releasable factors from epithelial-mesenchymal interaction in controlling during and the late stage of the healing process. Emphasis will be given on the crosstalk between keratinocytes and fibroblasts in ECM modulation and the healing outcome following a brief discussion of the wound healing initiation mechanism. In particular, we will review the termination of acute dermal wound healing, which frequently leads to the development of hypertrophic scarring.
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Affiliation(s)
- Nafise Amiri
- Department of Surgery, International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, British Columbia, Canada
| | - Andrew P Golin
- Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Reza B Jalili
- Department of Surgery, International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, British Columbia, Canada
| | - Aziz Ghahary
- Department of Surgery, International Collaboration on Repair Discoveries (ICORD), University of British Columbia, Vancouver, British Columbia, Canada
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Huang YJ, Huang CL, Lai RY, Zhuang CH, Chiu WH, Lee KM. Microstructure and Biological Properties of Electrospun In Situ Polymerization of Polycaprolactone-Graft-Polyacrylic Acid Nanofibers and Its Composite Nanofiber Dressings. Polymers (Basel) 2021; 13:4246. [PMID: 34883754 PMCID: PMC8659835 DOI: 10.3390/polym13234246] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 11/26/2021] [Accepted: 11/29/2021] [Indexed: 12/30/2022] Open
Abstract
In this study, polycaprolactone (PCL)- and poly(acrylic acid) (PAA)-based electrospun nanofibers were prepared for the carriers of antimicrobials and designed composite nanofiber mats for chronic wound care. The PCL- and PAA-based electrospun nanofibers were prepared through in situ polymerization starting from PCL and acrylic acid (AA). Different amounts of AA were introduced to improve the hydrophilicity of the PCL electrospun nanofibers. A compatibilizer and a photoinitiator were then added to the electrospinning solution to form a grafted structure composed of PCL and PAA (PCL-g-PAA). The grafted PAA was mainly located on the surface of a PCL nanofiber. The optimization of the composition of PCL, AA, compatibilizer, and photoinitiator was studied, and the PCL-g-PAA electrospun nanofibers were characterized through scanning electron microscopy and 1H-NMR spectroscopy. Results showed that the addition of AA to PCL improved the hydrophilicity of the electrospun PCL nanofibers, and a PCL/AA ratio of 80/20 presented the best composition and had smooth nanofiber morphology. Moreover, poly[2 -(tert-butylaminoethyl) methacrylate]-grafted graphene oxide nanosheets (GO-g-PTA) functioned as an antimicrobial agent and was used as filler for PCL-g-PAA nanofibers in the preparation of composite nanofiber mats, which exerted synergistic effects promoted by the antibacterial properties of GO-g-PTA and the hydrophilicity of PCL-g-PAA electrospun nanofibers. Thus, the composite nanofiber mats had antibacterial properties and absorbed body fluids in the wound healing process, thereby promoting cell proliferation. The biodegradation of the PCL-g-PAA electrospun nanofibers also demonstrated an encouraging result of three-fold weight reduction compared to the neat PCL nanofiber. Our findings may serve as guidelines for the fabrication of electrospun nanofiber composites that can be used mats for chronic wound care.
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Affiliation(s)
- Yi-Jen Huang
- Department of Fiber and Composite Materials, Feng Chia University, Taichung 40724, Taiwan; (Y.-J.H.); (R.-Y.L.); (C.-H.Z.)
| | - Chien-Lin Huang
- Department of Fiber and Composite Materials, Feng Chia University, Taichung 40724, Taiwan; (Y.-J.H.); (R.-Y.L.); (C.-H.Z.)
| | - Ruo-Yu Lai
- Department of Fiber and Composite Materials, Feng Chia University, Taichung 40724, Taiwan; (Y.-J.H.); (R.-Y.L.); (C.-H.Z.)
| | - Cheng-Han Zhuang
- Department of Fiber and Composite Materials, Feng Chia University, Taichung 40724, Taiwan; (Y.-J.H.); (R.-Y.L.); (C.-H.Z.)
| | - Wei-Hao Chiu
- Center for Green Technology, Chang Gung University, Taoyuan 33302, Taiwan;
| | - Kun-Mu Lee
- Center for Green Technology, Chang Gung University, Taoyuan 33302, Taiwan;
- Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan 33302, Taiwan
- Department of Pediatrics, Chang Gung Memorial Hospital, Linkou, Taoyuan 33305, Taiwan
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Ousey K, Hodgson H, Rippon MG, Rogers AA. Hydro-responsive wound dressings for treating hard-to-heal wounds: a narrative review of the clinical evidence. J Wound Care 2021; 30:980-992. [PMID: 34881992 DOI: 10.12968/jowc.2021.30.12.980] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A break in skin integrity must be repaired as quickly as possible to avoid excess blood and fluid loss, and to minimise the onset of infection. Hard-to-heal wounds, in which the progression of the wound healing response is compromised, present several challenges to healing (for example, the presence of devitalised tissue acting as a physical barrier to healing and as a focus for bacterial contamination with the potential for subsequent infection). The objective of this article is to present, as a narrative review, the clinical evidence supporting the use of a unique hydro-responsive wound dressing (HydroClean, HRWD1, PAUL HARTMANN AG, Germany). The dressing provides a simple treatment option to address a number of clinical challenges clinicians must overcome in order to facilitate wound healing progression. These studies demonstrated that this product supported successful debridement/cleansing of a wide variety of wounds, including hard-to-heal wounds, enabled wound bed preparation, and lead to positive healing outcomes, including in wounds that previously had failed to heal. The simplicity of using HRWD1 as a single dressing can help clinicians overcome a variety of challenges when treating both acute and hard-to-heal wounds, which, with the benefit of proven patient outcomes, could make it an ideal choice for a first-line treatment.
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Affiliation(s)
- Karen Ousey
- Institute of Skin Integrity and Infection Prevention, School of Human and Health Sciences, University of Huddersfield, Huddersfield, UK
| | | | - Mark G Rippon
- University of Huddersfield, Queensgate, Huddersfield, UK
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Konop M, Rybka M, Drapała A. Keratin Biomaterials in Skin Wound Healing, an Old Player in Modern Medicine: A Mini Review. Pharmaceutics 2021; 13:2029. [PMID: 34959311 PMCID: PMC8705570 DOI: 10.3390/pharmaceutics13122029] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/20/2021] [Accepted: 11/26/2021] [Indexed: 12/26/2022] Open
Abstract
Impaired wound healing is a major medical problem. To solve it, researchers around the world have turned their attention to the use of tissue-engineered products to aid in skin regeneration in case of acute and chronic wounds. One of the primary goals of tissue engineering and regenerative medicine is to develop a matrix or scaffold system that mimics the structure and function of native tissue. Keratin biomaterials derived from wool, hair, and bristle have been the subjects of active research in the context of tissue regeneration for over a decade. Keratin derivatives, which can be either soluble or insoluble, are utilized as wound dressings since keratins are dynamically up-regulated and needed in skin wound healing. Tissue biocompatibility, biodegradability, mechanical durability, and natural abundance are only a few of the keratin biomaterials' properties, making them excellent wound dressing materials to treat acute and chronic wounds. Several experimental and pre-clinical studies described the beneficial effects of the keratin-based wound dressing in faster wound healing. This review focuses exclusively on the biomedical application of a different type of keratin biomaterials as a wound dressing in pre-clinical and clinical conditions.
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Affiliation(s)
- Marek Konop
- Laboratory of Center for Preclinical Research, Department of Experimental Physiology and Pathophysiology, Medical University of Warsaw, 02-106 Warsaw, Poland; (M.R.); (A.D.)
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Abstract
Wound healing is a complex and energy-demanding process. The relationship between nutrition and wound healing has been recognized for many centuries. Several studies have indicated that nutritional deficiencies are more prevalent among patients with chronic wounds. Malnutrition may alter the inflammatory response, collagen synthesis, and wound tensile strength, all of which are crucial for wound healing. Although the specific role of nutrition and supplementation in wound care remains uncertain, it is necessary to identify and correct nutritional imbalances to avoid any potential deterioration of the healing process. It is also important to recognize the differences in pathophysiology between acute and chronic wounds. A burn, surgical, or a traumatic wound is different from a diabetic foot ulcer, which is different from a pressure ulcer. Chronic wounds are more prevalent in the aging population, and patients often have underlying comorbidities, such as diabetes mellitus, peripheral vascular disease, connective tissue disease, or other systemic illnesses that may alter energy metabolism and contribute to impaired healing. Management approaches to acute wound care may not apply universally to chronic wounds. In this review, we discuss the available data and possible roles for nutrition in wound healing.
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Tanaka A, Uemura H, Masui T, Ota I, Kimura T, Akioka H, Adachi S, Kitahara T. Surgical technique for the prevention of tracheal necrosis following total pharyngolaryngectomy. MEDICINE INTERNATIONAL 2021; 1:18. [PMID: 36698531 PMCID: PMC9829085 DOI: 10.3892/mi.2021.18] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 10/25/2021] [Indexed: 01/28/2023]
Abstract
Total pharyngolaryngectomy with cervical esophagectomy (TPLCE) is an invasive procedure with various post-operative complications. Tracheal necrosis (TRN) is a fatal complication of TPLCE. The present study aimed to identify a surgical technique which may be used to prevent TRN. The post-operative complications of 48 patients who underwent TPLCE from January, 2010 to December, 2019 were retrospectively investigated. The incidence of TRN was examined and measures against TRN were reviewed. The results revealed that 3 patients (6%) experienced TRN within 1 week following surgery. In addition, 2 patients required the surgical debridement of the necrotic tissue and tracheoplasty. The other patient underwent conservative treatment. Stomal recurrence developed in 1 patient (2%). On the whole, the present study demonstrates that the incidence of TRN following TPLCE is lower than that observed in previous reports, and only one stomal recurrence was reported. Preserving the blood supply to the trachea is essential for the prevention of TRN. The eight surgical processes used herein effectively preserved the blood supply. Further investigations however, are necessary in order to confirm the present findings and to ensure effective measures are found with which to prevent TRN following TPLCE.
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Affiliation(s)
- Akihisa Tanaka
- Department of Otolaryngology-Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634-8522, Japan,Correspondence to: Dr Akihisa Tanaka, Department of Otolaryngology-Head and Neck Surgery, Nara Medical University, 840 Shijo-cho, Kashihara, Nara 634-8522, Japan
| | - Hirokazu Uemura
- Department of Otolaryngology-Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634-8522, Japan
| | - Takashi Masui
- Department of Otolaryngology-Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634-8522, Japan
| | - Ichiro Ota
- Department of Otolaryngology-Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634-8522, Japan
| | - Takahiro Kimura
- Department of Otolaryngology-Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634-8522, Japan
| | - Hiroshi Akioka
- Department of Otolaryngology-Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634-8522, Japan
| | - Shiori Adachi
- Department of Otolaryngology-Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634-8522, Japan
| | - Tadashi Kitahara
- Department of Otolaryngology-Head and Neck Surgery, Nara Medical University, Kashihara, Nara 634-8522, Japan
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Gera S, Kankuri E, Kogermann K. Antimicrobial peptides - Unleashing their therapeutic potential using nanotechnology. Pharmacol Ther 2021; 232:107990. [PMID: 34592202 DOI: 10.1016/j.pharmthera.2021.107990] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 08/30/2021] [Accepted: 09/01/2021] [Indexed: 02/07/2023]
Abstract
Antimicrobial peptides (AMPs) are potent, mostly cationic, and amphiphilic broad-spectrum host defense antimicrobials that are produced by all organisms ranging from prokaryotes to humans. In addition to their antimicrobial actions, they modulate inflammatory and immune responses and promote wound healing. Although they have clear benefits over traditional antibiotic drugs, their wide therapeutic utilization is compromised by concerns of toxicity, stability, and production costs. Recent advances in nanotechnology have attracted increasing interest to unleash the AMPs' immense potential as broad-spectrum antibiotics and anti-biofilm agents, against which the bacteria have less chances to develop resistance. Topical application of AMPs promotes migration of keratinocytes and fibroblasts, and contributes significantly to an accelerated wound healing process. Delivery of AMPs by employing nanotechnological approaches avoids the major disadvantages of AMPs, such as instability and toxicity, and provides a controlled delivery profile together with prolonged activity. In this review, we provide an overview of the key properties of AMPs and discuss the latest developments in topical AMP therapy using nanocarriers. We use chronic hard-to-heal wounds-complicated by infections, inflammation, and stagnated healing-as an example of an unmet medical need for which the AMPs' wide range of therapeutic actions could provide the most potential benefit. The use of innovative materials and sophisticated nanotechnological approaches offering various possibilities are discussed in more depth.
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Affiliation(s)
- Sonia Gera
- Institute of Pharmacy, University of Tartu, Nooruse 1, 50411 Tartu, Estonia
| | - Esko Kankuri
- Department of Pharmacology, Faculty of Medicine, University of Helsinki, Haartmaninkatu 8, 00290 Helsinki, Finland.
| | - Karin Kogermann
- Institute of Pharmacy, University of Tartu, Nooruse 1, 50411 Tartu, Estonia.
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Schulte-Werning LV, Murugaiah A, Singh B, Johannessen M, Engstad RE, Škalko-Basnet N, Holsæter AM. Multifunctional Nanofibrous Dressing with Antimicrobial and Anti-Inflammatory Properties Prepared by Needle-Free Electrospinning. Pharmaceutics 2021; 13:1527. [PMID: 34575602 PMCID: PMC8464763 DOI: 10.3390/pharmaceutics13091527] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/13/2021] [Accepted: 09/17/2021] [Indexed: 12/31/2022] Open
Abstract
An active wound dressing should address the main goals in wound treatment, which are improved wound healing and reduced infection rates. We developed novel multifunctional nanofibrous wound dressings with three active ingredients: chloramphenicol (CAM), beta-glucan (βG) and chitosan (CHI), of which βG and CHI are active nanofiber-forming biopolymers isolated from the cell walls of Saccharomyces cerevisiae and from shrimp shells, respectively. To evaluate the effect of each active ingredient on the nanofibers' morphological features and bioactivity, nanofibers with both βG and CHI, only βG, only CHI and only copolymers, polyethylene oxide (PEO) and hydroxypropylmethylcellulose (HPMC) were fabricated. All four nanofiber formulations were also prepared with 1% CAM. The needle-free NanospiderTM technique allowed for the successful production of defect-free nanofibers containing all three active ingredients. The CAM-containing nanofibers had a burst CAM-release and a high absorption capacity. Nanofibers with all active ingredients (βG, CHI and CAM) showed a concentration-dependent anti-inflammatory activity, while maintaining the antimicrobial activity of CAM. The promising anti-inflammatory properties, together with the high absorption capacity and antimicrobial effect, make these multifunctional nanofibers promising as dressings in local treatment of infected and exuding wounds, such as burn wounds.
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Affiliation(s)
- Laura Victoria Schulte-Werning
- Drug Transport and Delivery Research Group, Department of Pharmacy, Faculty of Health Sciences, UiT The Arctic University of Norway, 9037 Tromsø, Norway; (L.V.S.-W.); (A.M.); (N.Š.-B.)
| | - Anjanah Murugaiah
- Drug Transport and Delivery Research Group, Department of Pharmacy, Faculty of Health Sciences, UiT The Arctic University of Norway, 9037 Tromsø, Norway; (L.V.S.-W.); (A.M.); (N.Š.-B.)
| | - Bhupender Singh
- Research Group for Host-Microbe Interaction, Department of Medical Biology, Faculty of Health Sciences, UiT The Arctic University of Norway, 9037 Tromsø, Norway; (B.S.); (M.J.)
| | - Mona Johannessen
- Research Group for Host-Microbe Interaction, Department of Medical Biology, Faculty of Health Sciences, UiT The Arctic University of Norway, 9037 Tromsø, Norway; (B.S.); (M.J.)
| | | | - Nataša Škalko-Basnet
- Drug Transport and Delivery Research Group, Department of Pharmacy, Faculty of Health Sciences, UiT The Arctic University of Norway, 9037 Tromsø, Norway; (L.V.S.-W.); (A.M.); (N.Š.-B.)
| | - Ann Mari Holsæter
- Drug Transport and Delivery Research Group, Department of Pharmacy, Faculty of Health Sciences, UiT The Arctic University of Norway, 9037 Tromsø, Norway; (L.V.S.-W.); (A.M.); (N.Š.-B.)
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Felice F, Mancini S, Di Stefano R. The importance of Mediterranean diet and hydration habitus in patients with lower limb ulcers: A pilot study. JOURNAL OF VASCULAR NURSING 2021; 39:76-83. [PMID: 34507704 DOI: 10.1016/j.jvn.2021.06.003] [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: 01/24/2020] [Revised: 05/27/2021] [Accepted: 06/20/2021] [Indexed: 11/15/2022]
Abstract
Chronic leg ulcers are a common condition among adults, causing pain and social distress. Population aging has contributed to the amplification of the disease with increased cardiovascular diseases such as myocardial infarction, stroke, limb ischemia, cancers, chronic respiratory diseases, and diabetes. The aim of this study was to evaluate the influence of the Mediterranean Diet (MD) and hydration on the healing rate of the ulcers. A group of 35 patients (M/F 16/19, mean age 78 ± 10 years) with venous, arterial, or mixed ulcers was subjected to a Food Frequency Questionnaire (FFQ) and a Hydration Habits Questionnaire (HHQ). Clinical and anthropometric data were collected. A one-year follow-up was conducted. Complete ulcer healing was observed in 26% of the patients, of whom 67% had a habit of high hydration (more than 1 liter /day), regardless of adherence to the MD. In our study population, about half showed a low adherence to the MD. A moderate-high adherence to the MD showed an increase of arterial ulcer healing compared to subjects with a low adherence to the MD, however, only when associated to a consumption of more than 1 liter of water daily. In conclusion, dietary assessments could help identify patients who are likely to benefit from nutritional interventions for improving overall health and wound healing. The habit of high hydration, namely more than 1 liter daily, can influence the wound healing rate.
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Affiliation(s)
- Francesca Felice
- Cardiovascular Research Laboratory, Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, University of Pisa, 56100 Pisa, Italy
| | - Sandra Mancini
- Cardioangiology Unit, Pisa University Hospital, 56100 Pisa, Italy
| | - Rossella Di Stefano
- Cardiovascular Research Laboratory, Department of Surgical, Medical and Molecular Pathology and Critical Care Medicine, University of Pisa, 56100 Pisa, Italy; SD Sport Medicine Department of Clinical and Experimental Medicine, University of Pisa 56100, Pisa, Italy; Interdepartmental Research Center "Nutraceuticals and Food for Health", University of Pisa, 56100 Pisa, Italy.
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45
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Li M, Hu M, Zeng H, Yang B, Zhang Y, Li Z, Lu L, Ming Y. Multifunctional Zinc Oxide/Silver Bimetallic Nanomaterial-Loaded Nanofibers for Enhanced Tissue Regeneration and Wound Healing. J Biomed Nanotechnol 2021; 17:1840-1849. [PMID: 34688329 DOI: 10.1166/jbn.2021.3152] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Native skin repair requires wound care products that not only protect the wound from bacterial infection, but also accelerate wound closure and minimize scarring. Nanomaterials have been widely applied for wound healing due to their multifunctional properties. In a previous study, we prepared and characterized electrospinning zinc oxide/silver/polyvinylpyrrolidone/polycaprolactone (ZnO/Ag/PVP/PCL) nanofibers using ZnO and Ag nanoparticles, and evaluated their antibacterial effect in vitro. In this work, further characterization studies were performed, which confirmed that the ZnO/Ag nanoparticles were physically embedded and evenly distributed in the ZnO/Ag/PVP/PCL nanofibers, enabling the sustained release of Ag and Zn. In addition, the bimetallic nanofibers showed satisfactory fluid handling and flexibility. In vivo wound healing and histology studies showed that the ZnO/Ag/PVP/PCL nanofibers had a better anti-inflammatory, skin tissue regeneration, and wound healing effect than monometallic nanofibers or a commercially available wound plaster (Yunnan Baiyao). Therefore, ZnO/Ag/PVP/PCL bimetallic nanofibers may be a safe, efficient biomedical dressing for wound healing.
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Affiliation(s)
- Mao Li
- Health Management Centre, Clinical Medical College & Affiliated Hospital of Chengdu University, Chengdu University, Chengdu, 610106, P. R. China
| | - Min Hu
- Department of Pharmacy, Daping Hospital, Army Medical University, Chongqing, 400042, P. R. China
| | - Honglian Zeng
- Health Management Centre, Clinical Medical College & Affiliated Hospital of Chengdu University, Chengdu University, Chengdu, 610106, P. R. China
| | - Bo Yang
- Health Management Centre, Clinical Medical College & Affiliated Hospital of Chengdu University, Chengdu University, Chengdu, 610106, P. R. China
| | - Yi Zhang
- Health Management Centre, Clinical Medical College & Affiliated Hospital of Chengdu University, Chengdu University, Chengdu, 610106, P. R. China
| | - Ziwei Li
- Department of Pharmacy, Daping Hospital, Army Medical University, Chongqing, 400042, P. R. China
| | - Laichun Lu
- Department of Pharmacy, Daping Hospital, Army Medical University, Chongqing, 400042, P. R. China
| | - Yue Ming
- Department of Pharmacy, Daping Hospital, Army Medical University, Chongqing, 400042, P. R. China
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Jin R, Cui Y, Chen H, Zhang Z, Weng T, Xia S, Yu M, Zhang W, Shao J, Yang M, Han C, Wang X. Three-dimensional bioprinting of a full-thickness functional skin model using acellular dermal matrix and gelatin methacrylamide bioink. Acta Biomater 2021; 131:248-261. [PMID: 34265473 DOI: 10.1016/j.actbio.2021.07.012] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 06/27/2021] [Accepted: 07/04/2021] [Indexed: 11/29/2022]
Abstract
Treatment of full-thickness skin defects still presents a significant challenge in clinical practice. Three-dimensional (3D) bioprinting technique offers a promising approach for fabricating skin substitutes. However, it is necessary to identify bioinks that have both sufficient mechanical properties and desirable biocompatibilities. In this study, we successfully fabricated acellular dermal matrix (ADM) and gelatin methacrylamide (GelMA) bioinks. The results demonstrated that ADM preserved the main extracellular matrix (ECM) components of the skin and GelMA had tunable mechanical properties. Both bioinks with shear-thinning properties were suitable for 3D bioprinting and GelMA bioink exhibited high printability. Additionally, the results revealed that 20% GelMA with sufficient mechanical properties was suitable to engineer epidermis, 1.5% ADM and 10% GelMA displayed relatively good cytocompatibilities. Here, we proposed a new 3D structure to simulate natural full-thickness skin, which included 20% GelMA with HaCaTs as an epidermal layer, 1.5% ADM with fibroblasts as the dermis, and 10% GelMA mesh with human umbilical vein endothelial cells (HUVECs) as the vascular network and framework. We demonstrated that this 3D bioprinting functional skin model (FSM) could not only promote cell viability and proliferation, but also support epidermis reconstruction in vitro. When transplanted in vivo, the FSM could maintain cell viability for at least 1 week. Furthermore, the FSM promoted wound healing and re-epithelization, stimulated dermal ECM secretion and angiogenesis, and improved wound healing quality. The FSM may provide viable functional skin substitutes for future clinical applications. STATEMENT OF SIGNIFICANCE: We propose a new 3D structure to simulate natural full-thickness skin, which included 20% GelMA with HaCaTs as an epidermal layer, 1.5% ADM with fibroblasts as the dermis, and 10% GelMA mesh with HUVECs as the vascular network. It could not only maintain a moist microenvironment and barrier function, but also recreate the natural skin microenvironment to promote cell viability and proliferation. This may provide viable functional skin substitutes for future clinical applications.
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Affiliation(s)
- Ronghua Jin
- Department of Burns & Wound Care Center, The Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou 310009, China
| | - Yuecheng Cui
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Haojiao Chen
- Department of Burns, Shaoxing Second Hospital, Shaoxing, China
| | - Zhenzhen Zhang
- First People's Hospital of Hangzhou Xiaoshan District, Hangzhou, China
| | - Tingting Weng
- Department of Burns & Wound Care Center, The Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou 310009, China
| | - Sizhan Xia
- Department of Burns & Wound Care Center, The Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou 310009, China
| | - Meirong Yu
- Clinical Research Center, The Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou, China
| | - Wei Zhang
- Department of Burns & Wound Care Center, The Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou 310009, China
| | - Jiaming Shao
- Department of Burns & Wound Care Center, The Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou 310009, China
| | - Min Yang
- Department of Burns & Wound Care Center, The Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou 310009, China
| | - Chunmao Han
- Department of Burns & Wound Care Center, The Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou 310009, China
| | - Xingang Wang
- Department of Burns & Wound Care Center, The Second Affiliated Hospital of Zhejiang University College of Medicine, Hangzhou 310009, China.
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Banerjee K, Chatterjee M, Sandur V R, Nachimuthu R, Madhyastha H, Thiagarajan P. Azadirachta indica A. Juss (Neem) oil topical formulation with liquid crystals ensconcing depot water for anti-inflammatory, wound healing and anti-methicillin resistant Staphylococcus aureus activities. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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48
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Luan Z, Zhang H, Hu J, Zhang J, Liu Y. Crosslinked carboxymethyl starch nanofiber mats: Preparation, water resistance and exudates control ability. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110568] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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49
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Allbritton-King JD, Kimicata M, Fisher JP. Incorporating a structural extracellular matrix gradient into a porcine urinary bladder matrix-based hydrogel dermal scaffold. J Biomed Mater Res A 2021; 109:1893-1904. [PMID: 33797180 DOI: 10.1002/jbm.a.37181] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 02/17/2021] [Accepted: 03/24/2021] [Indexed: 12/21/2022]
Abstract
The increasing prevalence of chronic, nonhealing wounds necessitates the investigation of full-thickness skin substitutes conducive to host integration and wound closure. Extracellular matrix (ECM)-based hydrogel scaffolds mimic the physiological matrix environment of dermal cells, thereby conferring favorable cellular adhesion, infiltration, and proliferation. However, low-concentration ECM hydrogels rapidly lose mechanical strength as they degrade, leaving them susceptible to shrinkage from fibroblast-mediated contraction. Conversely, high-concentration ECM hydrogels are typically too dense to permit nutrient diffusion and cellular migration. This study investigates the design and fabrication of a graded-concentration hydrogel composed of porcine urinary bladder matrix (UBM) as a dermal scaffold for potential use in chronic wound treatment. Our method of UBM isolation and decellularization effectively removed native DNA while preserving matrix proteins. Hydrogels composed of a range of decellularized UBM (dUBM) concentrations were characterized and used to design a three-tiered gradient hydrogel that promoted cellular activity and maintained structural integrity. The gradient dUBM hydrogel showed stability of cross-sectional area during collagenase degradation, despite considerable loss of mass. The gradient dUBM hydrogel also resisted fibroblast-mediated contraction while supporting high surface cell viability, demonstrating the mechanical support provided by denser layers of dUBM. Overall, incorporation of an ECM concentration gradient into a porcine UBM-based hydrogel scaffold capitalizes on the unique advantages of both high and low-concentration ECM hydrogels, and mitigates the structural weaknesses that have limited the efficacy of hydrogel dermal scaffolds for chronic wounds. Our gradient design shows promise for future development of stable, pro-regenerative wound scaffolds with customized architectures using 3D printing.
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Affiliation(s)
- Jules D Allbritton-King
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA.,Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland, USA
| | - Megan Kimicata
- Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland, USA.,Department of Materials Science and Engineering, University of Maryland, College Park, Maryland, USA
| | - John P Fisher
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland, USA.,Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland, USA
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Probing Skin Barrier Recovery on Molecular Level Following Acute Wounds: An In Vivo/Ex Vivo Study on Pigs. Biomedicines 2021; 9:biomedicines9040360. [PMID: 33807251 PMCID: PMC8065685 DOI: 10.3390/biomedicines9040360] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 03/24/2021] [Accepted: 03/26/2021] [Indexed: 11/17/2022] Open
Abstract
Proper skin barrier function is paramount for our survival, and, suffering injury, there is an acute need to restore the lost barrier and prevent development of a chronic wound. We hypothesize that rapid wound closure is more important than immediate perfection of the barrier, whereas specific treatment may facilitate perfection. The aim of the current project was therefore to evaluate the quality of restored tissue down to the molecular level. We used Göttingen minipigs with a multi-technique approach correlating wound healing progression in vivo over three weeks, monitored by classical methods (e.g., histology, trans-epidermal water loss (TEWL), pH) and subsequent physicochemical characterization of barrier recovery (i.e., small and wide-angle X-ray diffraction (SWAXD), polarization transfer solid-state NMR (PTssNMR), dynamic vapor sorption (DVS), Fourier transform infrared (FTIR)), providing a unique insight into molecular aspects of healing. We conclude that although acute wounds sealed within two weeks as expected, molecular investigation of stratum corneum (SC) revealed a poorly developed keratin organization and deviations in lipid lamellae formation. A higher lipid fluidity was also observed in regenerated tissue. This may have been due to incomplete lipid conversion during barrier recovery as glycosphingolipids, normally not present in SC, were indicated by infrared FTIR spectroscopy. Evidently, a molecular approach to skin barrier recovery could be a valuable tool in future development of products targeting wound healing.
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