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Deng X, Gould ML, Katare RG, Ali MA. Melt-extruded biocompatible surgical sutures loaded with microspheres designed for wound healing. Biomed Mater 2024; 19:055007. [PMID: 38917838 DOI: 10.1088/1748-605x/ad5baa] [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: 01/23/2024] [Accepted: 06/25/2024] [Indexed: 06/27/2024]
Abstract
Sutures are commonly used in surgical procedures and have immense potential for direct drug delivery into the wound site. However, incorporating active pharmaceutical ingredients into the sutures has always been challenging as their mechanical strength deteriorates. This study proposes a new method to produce microspheres-embedded surgical sutures that offer adequate mechanical properties for effective wound healing applications. The study used curcumin, a bioactive compound found in turmeric, as a model drug due to its anti-inflammatory, antioxidant, and anti-bacterial properties, which make it an ideal candidate for a surgical suture drug delivery system. Curcumin-loaded microspheres were produced using the emulsion solvent evaporation method with polyvinyl alcohol (PVA) as the aqueous phase. The microspheres' particle sizes, drug loading (DL) capacity, and encapsulation efficiency (EE) were investigated. Microspheres were melt-extruded with polycaprolactone and polyethylene glycol via a 3D bioplotter, followed by a drawing process to optimise the mechanical strength. The sutures' thermal, physiochemical, and mechanical properties were investigated, and the drug delivery and biocompatibility were evaluated. The results showed that increasing the aqueous phase concentration resulted in smaller particle sizes and improved DL capacity and EE. However, if PVA was used at 3% w/v or below, it prevented aggregate formation after lyophilisation, and the average particle size was found to be 34.32 ± 12.82 μm. The sutures produced with the addition of microspheres had a diameter of 0.38 ± 0.02 mm, a smooth surface, minimal tissue drag, and proper tensile strength. Furthermore, due to the encapsulated drug-polymer structure, the sutures exhibited a prolonged and sustained drug release of up to 14 d. Microsphere-loaded sutures demonstrated non-toxicity and accelerated wound healing in thein vitrostudies. We anticipate that the microsphere-loaded sutures will serve as an excellent biomedical device for facilitating wound healing.
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Affiliation(s)
- X Deng
- Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - M L Gould
- Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
| | - R G Katare
- Department of Physiology, HeartOtagoy, University of Otago, Dunedin, New Zealand
| | - M A Ali
- Faculty of Dentistry, Sir John Walsh Research Institute, University of Otago, Dunedin, New Zealand
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Singh H, Dhanka M, Yadav I, Gautam S, Bashir SM, Mishra NC, Arora T, Hassan S. Technological Interventions Enhancing Curcumin Bioavailability in Wound-Healing Therapeutics. TISSUE ENGINEERING. PART B, REVIEWS 2024; 30:230-253. [PMID: 37897069 DOI: 10.1089/ten.teb.2023.0085] [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: 10/29/2023]
Abstract
Wound healing has been a challenge in the medical field. Tremendous research has been carried out to expedite wound healing by fabricating various formulations, some of which are now commercially available. However, owing to their natural source, people have been attracted to advanced formulations with herbal components. Among various herbs, curcumin has been the center of attraction from ancient times for its healing properties due to its multiple therapeutic effects, including antioxidant, antimicrobial, anti-inflammatory, anticarcinogenic, neuroprotective, and radioprotective properties. However, curcumin has a low water solubility and rapidly degrades into inactive metabolites, which limits its therapeutic efficacy. Henceforth, a carrier system is needed to carry curcumin, guard it against degradation, and keep its bioavailability and effectiveness. Different formulations with curcumin have been synthesized, and exist in the form of various synthetic and natural materials, including nanoparticles, hydrogels, scaffolds, films, fibers, and nanoemulgels, improving its bioavailability dramatically. This review discusses the advances in different types of curcumin-based formulations used in wound healing in recent times, concentrating on its mechanisms of action and discussing the updates on its application at several stages of the wound healing process. Impact statement Curcumin is a herbal compound extracted from turmeric root and has been used since time immemorial for its health benefits including wound healing. In clinical formulations, curcumin shows low bioavailability, which mainly stems from the way it is delivered in the body. Henceforth, a carrier system is needed to carry curcumin, guard it against degradation, while maintaining its bioavailability and therapeutic efficacy. This review offers an overview of the advanced technological interventions through tissue engineering approaches to efficiently utilize curcumin in different types of wound healing applications.
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Affiliation(s)
- Hemant Singh
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Roorkee, India
- Department of Biological Engineering, Indian Institute of Technology Gandhinagar, Gandhinagar, India
- Department of Biology, Khalifa University, Main Campus, Abu Dhabi, United Arab Emirates
- Advanced Materials Chemistry Center, Khalifa University, SAN Campus, Abu Dhabi, United Arab Emirates
| | - Mukesh Dhanka
- Department of Biological Engineering, Indian Institute of Technology Gandhinagar, Gandhinagar, India
| | - Indu Yadav
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Sneh Gautam
- Department of Molecular Biology & Genetic Engineering, G. B. Pant University of Agriculture & Technology, Pantnagar, India
| | - Showkeen Muzamil Bashir
- Biochemistry and Molecular Biology Lab Division, Division of Veterinary Biochemistry, Faculty of Veterinary Sciences and Animal Husbandry, Srinagar, India
| | - Narayan Chandra Mishra
- Department of Polymer and Process Engineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Taruna Arora
- Reproductive Health Division of RBMCH, Indian Council of Medical Research, New Delhi, India
| | - Shabir Hassan
- Department of Biology, Khalifa University, Main Campus, Abu Dhabi, United Arab Emirates
- Advanced Materials Chemistry Center, Khalifa University, SAN Campus, Abu Dhabi, United Arab Emirates
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Guimarães LHDS, Pereira Neto ARL, de Oliveira TL, Kataoka MSDS, Pinheiro JDJV, Alves Júnior SDM. Platelet-rich fibrin stimulates the proliferation and expression of proteins related to survival, adhesion, and angiogenesis in gingival fibroblasts cultured on a titanium nano-hydroxyapatite-treated surface. J Oral Biosci 2024; 66:160-169. [PMID: 38048849 DOI: 10.1016/j.job.2023.11.008] [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: 08/08/2023] [Revised: 11/27/2023] [Accepted: 11/29/2023] [Indexed: 12/06/2023]
Abstract
OBJECTIVES This in vitro study aimed to evaluate the cell viability and expression of proteins related to angiogenesis, adhesion, and cell survival (vascular endothelial growth factor, paxillin, vinculin, fibronectin, and protein kinase B) in gingival fibroblasts that were cultured on titanium discs treated with or without nanohydroxyapatite and exposed to platelet-rich fibrin (PRF)-conditioned medium. METHODS To obtain the conditioned medium, the PRF membranes were prepared and incubated for 48 h in a culture medium without fetal bovine serum. Analyses were performed at 24 and 48 h for the cells cultured on machined-titanium discs or surfaces treated with nanohydroxyapatite in a control medium or PRF-conditioned medium, resulting in four experimental groups (CT-TI, CT-NANO, PRF-TI, and PRF-NANO). RESULTS A decrease in the viability of the gingival fibroblasts was not observed in any of the experimental groups. The PRF-NANO group showed significantly higher immunoexpression of paxillin and AKT at 24 and 48 h (p < 0.01). The same result was observed for vinculin expression at 24 h (p < 0.001). The expression of fibronectin at 48 h and VEGF at 24 and 48 h was significantly higher when the cells were exposed to the PRF-conditioned medium, regardless of the disc surface (p < 0.05). CONCLUSION Gingival fibroblasts cultured on a nanohydroxyapatite-treated surface and in a PRF-conditioned medium showed a greater expression of proteins modulating adhesion, angiogenesis, and cell survival. Our results may contribute to the understanding of the mechanisms related to peri-implant soft tissue sealing.
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Affiliation(s)
| | | | - Thaianna Lima de Oliveira
- Department of Periodontology, School of Dentistry, Federal University of Pará, Av. Augusto Correa 01, Belém, PA, Brazil.
| | - Maria Sueli da Silva Kataoka
- Department of Oral Pathology, School of Dentistry, Federal University of Pará, Av. Augusto Correa 01, Belém, PA, Brazil.
| | - João de Jesus Viana Pinheiro
- Department of Oral Pathology, School of Dentistry, Federal University of Pará, Av. Augusto Correa 01, Belém, PA, Brazil.
| | - Sérgio de Melo Alves Júnior
- Department of Oral Pathology, School of Dentistry, Federal University of Pará, Av. Augusto Correa 01, Belém, PA, Brazil.
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Araújo GDMS, Loureiro AIS, Rodrigues JL, Barros PAB, Halicki PCB, Ramos DF, Marinho MAG, Vaiss DP, Vaz GR, Yurgel VC, Bidone J, Muccillo-Baisch AL, Hort MA, Paulo AMC, Dora CL. Toward a Platform for the Treatment of Burns: An Assessment of Nanoemulsions vs. Nanostructured Lipid Carriers Loaded with Curcumin. Biomedicines 2023; 11:3348. [PMID: 38137569 PMCID: PMC10742090 DOI: 10.3390/biomedicines11123348] [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: 10/04/2023] [Revised: 11/30/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
Curcumin is a highly promising substance for treating burns, owing to its anti-inflammatory, antioxidant, antimicrobial, and wound-healing properties. However, its therapeutic use is restricted due to its hydrophobic nature and low bioavailability. This study was conducted to address these limitations; it developed and tested two types of lipid nanocarriers, namely nanoemulsions (NE-CUR) and nanostructured lipid carriers (NLC-CUR) loaded with curcumin, and aimed to identify the most suitable nanocarrier for skin burn treatment. The study evaluated various parameters, including physicochemical characteristics, stability, encapsulation efficiency, release, skin permeation, retention, cell viability, and antimicrobial activity. The results showed that both nanocarriers showed adequate size (~200 nm), polydispersity index (~0.25), and zeta potential (~>-20 mV). They also showed good encapsulation efficiency (>90%) and remained stable for 120 days at different temperatures. In the release test, NE-CUR and NCL-CUR released 57.14% and 51.64% of curcumin, respectively, in 72 h. NE-CUR demonstrated better cutaneous permeation/retention in intact or scalded skin epidermis and dermis than NLC-CUR. The cell viability test showed no toxicity after treatment with NE-CUR and NLC-CUR up to 125 μg/mL. Regarding microbial activity assays, free curcumin has activity against P. aeruginosa, reducing bacterial growth by 75% in 3 h. NE-CUR inhibited bacterial growth by 65% after 24 h, and the association with gentamicin had favorable results, while NLC-CUR showed a lower inhibition. The results demonstrated that NE-CUR is probably the most promising nanocarrier for treating burns.
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Affiliation(s)
| | - Ana Isabel Sá Loureiro
- CEB-Center of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Jamile Lima Rodrigues
- Graduate Program in Food Science and Engineering, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
| | | | | | - Daniela Fernandes Ramos
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
| | | | - Daniela Pastorim Vaiss
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
| | - Gustavo Richter Vaz
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
| | - Virginia Campello Yurgel
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
| | - Juliana Bidone
- Center of Chemical, Pharmaceutical, and Food Sciences, Federal University of Pelotas, Pelotas 96010-610, RS, Brazil
| | - Ana Luiza Muccillo-Baisch
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
| | - Mariana Appel Hort
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
| | - Artur Manuel Cavaco Paulo
- CEB-Center of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Cristiana Lima Dora
- Graduate Program in Health Sciences, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
- Graduate Program in Food Science and Engineering, Federal University of Rio Grande, Rio Grande 96203-900, RS, Brazil
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Zhu Y, Xiao W, Zhong W, Xi C, Ye J, Zhang Q, Wu H, Du S. Study of the skin-penetration promoting effect and mechanism of combined system of curcumin liposomes prepared by microfluidic chip and skin penetrating peptides TD-1 for topical treatment of primary melanoma. Int J Pharm 2023; 643:123256. [PMID: 37482229 DOI: 10.1016/j.ijpharm.2023.123256] [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: 01/18/2023] [Revised: 07/08/2023] [Accepted: 07/17/2023] [Indexed: 07/25/2023]
Abstract
The transdermal drug delivery system (TDDS) is an effective strategy for the treatment of melanoma with fewer side effects and good biocompatible, but the skin penetration of drugs should be further promoted. Here, we proposed a new system that combined curcumin liposomes (Cur-Lips) with skin-penetrating peptides to promote skin penetration ability. However, the preparation of Cur-Lips has drawbacks of instability and low entrapment efficiency by the traditional methods. We thus innovatively designed and applied a microfluidic chip to optimize the preparation of Cur-Lips. Cur-Lips exhibited a particle size of 106.22 ± 4.94 nm with a low polydispersity index (<0.3) and high entrapment efficiency of 99.33 ± 1.05 %, which were prepared by the microfluidic chip. The Cur-Lips increased the skin penetration capability of Cur by 2.76 times compared to its solution in vitro skin penetration experiment. With the help of skin-penetrating peptide TD-1, the combined system further promoted the skin penetration capability by 4.48 times. The (TD-1 + Cur-Lips) system also exhibited a superior inhibition effect of the tumor to B16F10 in vitro. Furthermore, the topical application of (TD-1 + Cur-Lips) gel suppressed melanoma growth in vivo, and induced tumor cell apoptosis in tumor tissues. The skin-penetration promotion mechanism of the system was investigated. It was proved that the system could interact with the lipids and keratin on the stratum corneum to promote the Cur distribute into the stratum corneum through hair follicles and sweat glands. We proved that the microfluidic chips had unique advantages for the preparation of liposomes. The innovative combined system of liposomes and biological transdermal enhancers can effectively promote the skin penetration effect of drugs and have great potential for the prevention and treatment of melanoma.
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Affiliation(s)
- Yingyin Zhu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, People's Republic of China
| | - Wuqing Xiao
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, People's Republic of China
| | - Wanling Zhong
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, People's Republic of China
| | - Cheng Xi
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, People's Republic of China
| | - Jinhong Ye
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, People's Republic of China
| | - Qing Zhang
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, People's Republic of China
| | - Huichao Wu
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing 100029, People's Republic of China.
| | - Shouying Du
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing 100029, People's Republic of China.
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6
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Supporting the Wound Healing Process-Curcumin, Resveratrol and Baicalin in In Vitro Wound Healing Studies. Pharmaceuticals (Basel) 2023; 16:ph16010082. [PMID: 36678579 PMCID: PMC9861488 DOI: 10.3390/ph16010082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 12/22/2022] [Accepted: 12/23/2022] [Indexed: 01/11/2023] Open
Abstract
The purpose of the investigation was to evaluate the effect of the selected bioflavonoids curcumin, resveratrol and baicalin on the wound healing process in an in vitro model. In the study, Balb3t3 and L929 cell lines were used. The first step was the evaluation of the cytotoxicity of the substances tested (MTT assay). Then, using the scratch test (ST), the influence of bioflavonoids on the healing process was evaluated in an in vitro model. The second stage of the work was a mathematical analysis of the results obtained. On the basis of experimental data, the parameters of the Brian and Cousens model were determined in order to determine the maximum value of the cellular and metabolic response that occurs for the examined range of concentrations of selected bioflavonoids. In the MTT assays, no cytotoxic effect of curcumin, resveratrol and baicalin was observed in selected concentrations, while in the ST tests for selected substances, a stimulatory effect was observed on the cell division rate regardless of the cell lines tested. The results obtained encourage further research on the use of substances of natural origin to support the wound healing process.
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7
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Fu S, Du C, Zhang Q, Liu J, Zhang X, Deng M. A Novel Peptide from Polypedates megacephalus Promotes Wound Healing in Mice. Toxins (Basel) 2022; 14:toxins14110753. [PMID: 36356003 PMCID: PMC9693016 DOI: 10.3390/toxins14110753] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 10/24/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022] Open
Abstract
Amphibian skin contains wound-healing peptides, antimicrobial peptides, and insulin-releasing peptides, which give their skin a strong regeneration ability to adapt to a complex and harsh living environment. In the current research, a novel wound-healing promoting peptide, PM-7, was identified from the skin secretions of Polypedates megacephalus, which has an amino acid sequence of FLNWRRILFLKVVR and shares no structural similarity with any peptides described before. It displays the activity of promoting wound healing in mice. Moreover, PM-7 exhibits the function of enhancing proliferation and migration in HUVEC and HSF cells by affecting the MAPK signaling pathway. Considering its favorable traits as a novel peptide that significantly promotes wound healing, PM-7 can be a potential candidate in the development of novel wound-repairing drugs.
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Affiliation(s)
- Siqi Fu
- Hunan Key Laboratory of Medical Epigenomics, Department of Dermatology, The Second Xiangya Hospital, Central South University, Changsha 410013, China
| | - Canwei Du
- Chengdu Pep Biomedical Co., Ltd., Chengdu 610041, China
| | - Qijian Zhang
- Wound Center of Xiangya Hospital, Central South University, Changsha 410013, China
| | - Jiayu Liu
- Hunan Province Key Laboratory of Basic and Applied Hematology, Department of Biochemistry and Molecular Biology, School of Life Sciences, Central South University, Changsha 410013, China
| | - Xushuang Zhang
- Hunan Province Key Laboratory of Basic and Applied Hematology, Department of Biochemistry and Molecular Biology, School of Life Sciences, Central South University, Changsha 410013, China
| | - Meichun Deng
- Hunan Province Key Laboratory of Basic and Applied Hematology, Department of Biochemistry and Molecular Biology, School of Life Sciences, Central South University, Changsha 410013, China
- Hunan Key Laboratory of Animal Models for Human Diseases, School of Life Sciences, Central South University, Changsha 410013, China
- Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha 410013, China
- Correspondence:
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Li L, Wen Q, Ding R. Therapeutic targeting of VEGF and/or TGF-β to enhance anti-PD-(L)1 therapy: The evidence from clinical trials. Front Oncol 2022; 12:905520. [PMID: 35957885 PMCID: PMC9360509 DOI: 10.3389/fonc.2022.905520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Accepted: 06/30/2022] [Indexed: 11/19/2022] Open
Abstract
Normalizing the tumor microenvironment (TME) is a potential strategy to improve the effectiveness of immunotherapy. Vascular endothelial growth factor (VEGF) and transforming growth factor (TGF)-β pathways play an important role in the development and function of the TME, contributing to the immunosuppressive status of TME. To inhibit VEGF and/or TGF-β pathways can restore TME from immunosuppressive to immune-supportive status and enhance sensitivity to immunotherapy such as programmed death protein-1 (PD-1)/programmed cell death-ligand 1 (PD-L1) inhibitors. In this review, we described the existing preclinical and clinical evidence supporting the use of anti-VEGF and/or anti-TGF-β therapies to enhance cancer immunotherapy. Encouragingly, adopting anti-VEGF and/or anti-TGF-β therapies as a combination treatment with anti-PD-(L)1 therapy have been demonstrated as effective and tolerable in several solid tumors in clinical trials. Although several questions need to be solved, the clinical value of this combination strategy is worthy to be studied further.
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Affiliation(s)
- Linwei Li
- Department of Oncology, Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Qinglian Wen
- Department of Oncology, Affiliated Hospital of Southwest Medical University, Luzhou, China
- *Correspondence: Qinglian Wen, ; Ruilin Ding,
| | - Ruilin Ding
- Institute of Drug Clinical Trial/GCP Center, Affiliated Hospital of Southwest Medical University, Luzhou, China
- *Correspondence: Qinglian Wen, ; Ruilin Ding,
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9
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Deng X, Gould M, Ali MA. A review of current advancements for wound healing: Biomaterial applications and medical devices. J Biomed Mater Res B Appl Biomater 2022; 110:2542-2573. [PMID: 35579269 PMCID: PMC9544096 DOI: 10.1002/jbm.b.35086] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 04/28/2022] [Accepted: 04/30/2022] [Indexed: 12/12/2022]
Abstract
Wound healing is a complex process that is critical in restoring the skin's barrier function. This process can be interrupted by numerous diseases resulting in chronic wounds that represent a major medical burden. Such wounds fail to follow the stages of healing and are often complicated by a pro‐inflammatory milieu attributed to increased proteinases, hypoxia, and bacterial accumulation. The comprehensive treatment of chronic wounds is still regarded as a significant unmet medical need due to the complex symptoms caused by the metabolic disorder of the wound microenvironment. As a result, several advanced medical devices, such as wound dressings, wearable wound monitors, negative pressure wound therapy devices, and surgical sutures, have been developed to correct the chronic wound environment and achieve skin tissue regeneration. Most medical devices encompass a wide range of products containing natural (e.g., chitosan, keratin, casein, collagen, hyaluronic acid, alginate, and silk fibroin) and synthetic (e.g., polyvinyl alcohol, polyethylene glycol, poly[lactic‐co‐glycolic acid], polycaprolactone, polylactic acid) polymers, as well as bioactive molecules (e.g., chemical drugs, silver, growth factors, stem cells, and plant compounds). This review addresses these medical devices with a focus on biomaterials and applications, aiming to deliver a critical theoretical reference for further research on chronic wound healing.
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Affiliation(s)
- Xiaoxuan Deng
- Centre for Bioengineering & Nanomedicine (Dunedin), Department of Oral Rehabilitation, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - Maree Gould
- Centre for Bioengineering & Nanomedicine (Dunedin), Department of Oral Rehabilitation, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
| | - M Azam Ali
- Centre for Bioengineering & Nanomedicine (Dunedin), Department of Oral Rehabilitation, Faculty of Dentistry, University of Otago, Dunedin, New Zealand
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10
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Schilrreff P, Alexiev U. Chronic Inflammation in Non-Healing Skin Wounds and Promising Natural Bioactive Compounds Treatment. Int J Mol Sci 2022; 23:ijms23094928. [PMID: 35563319 PMCID: PMC9104327 DOI: 10.3390/ijms23094928] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/22/2022] [Accepted: 04/26/2022] [Indexed: 12/14/2022] Open
Abstract
Chronic inflammation is one of the hallmarks of chronic wounds and is tightly coupled to immune regulation. The dysregulation of the immune system leads to continuing inflammation and impaired wound healing and, subsequently, to chronic skin wounds. In this review, we discuss the role of the immune system, the involvement of inflammatory mediators and reactive oxygen species, the complication of bacterial infections in chronic wound healing, and the still-underexplored potential of natural bioactive compounds in wound treatment. We focus on natural compounds with antioxidant, anti-inflammatory, and antibacterial activities and their mechanisms of action, as well as on recent wound treatments and therapeutic advancements capitalizing on nanotechnology or new biomaterial platforms.
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11
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Ferreira AS, Macedo C, Silva AM, Delerue-Matos C, Costa P, Rodrigues F. Natural Products for the Prevention and Treatment of Oral Mucositis-A Review. Int J Mol Sci 2022; 23:ijms23084385. [PMID: 35457202 PMCID: PMC9030892 DOI: 10.3390/ijms23084385] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/11/2022] [Accepted: 04/14/2022] [Indexed: 02/06/2023] Open
Abstract
Cancer, a major world public health problem, is associated with chemotherapy treatments whose administration leads to secondary concerns, such as oral mucositis (OM). The OM disorder is characterized by the presence of ulcers in the oral mucosa that cause pain, bleeding, and difficulty in ingesting fluids and solids, or speaking. Bioactive compounds from natural sources have arisen as an effective approach for OM. This review aims to summarize the new potential application of different natural products in the prevention and treatment of OM in comparison to conventional ones, also providing a deep insight into the most recent clinical studies. Natural products, such as Aloe vera, Glycyrrhiza glabra, Camellia sinensis, Calendula officinalis, or honeybee crops, constitute examples of sources of bioactive compounds with pharmacological interest due to their well-reported activities (e.g., antimicrobial, antiviral, anti-inflammatory, analgesic, or wound healing). These activities are associated with the bioactive compounds present in their matrix (such as flavonoids), which are associated with in vivo biological activities and minimal or absent toxicity. Finally, encapsulation has arisen as a future opportunity to preserve the chemical stability and the drug bioa vailability of bioactive compounds and, most importantly, to improve the buccal retention period and the therapeutic effects.
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Affiliation(s)
- Ana Sofia Ferreira
- REQUIMTE/LAQV—Instituto Superior de Engenharia do Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015 Porto, Portugal; (A.S.F.); (C.M.); (A.M.S.); (C.D.-M.)
| | - Catarina Macedo
- REQUIMTE/LAQV—Instituto Superior de Engenharia do Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015 Porto, Portugal; (A.S.F.); (C.M.); (A.M.S.); (C.D.-M.)
| | - Ana Margarida Silva
- REQUIMTE/LAQV—Instituto Superior de Engenharia do Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015 Porto, Portugal; (A.S.F.); (C.M.); (A.M.S.); (C.D.-M.)
| | - Cristina Delerue-Matos
- REQUIMTE/LAQV—Instituto Superior de Engenharia do Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015 Porto, Portugal; (A.S.F.); (C.M.); (A.M.S.); (C.D.-M.)
| | - Paulo Costa
- UCIBIO—Applied Molecular Biosciences Unit, MedTech-Laboratory of Pharmaceutical Technology, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal;
- Associate Laboratory i4HB—Institute for Health and Bioeconomy, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal
| | - Francisca Rodrigues
- REQUIMTE/LAQV—Instituto Superior de Engenharia do Porto, Rua Dr. António Bernardino de Almeida 431, 4249-015 Porto, Portugal; (A.S.F.); (C.M.); (A.M.S.); (C.D.-M.)
- Correspondence: ; Tel.: +351-22-83-40-500
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