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Nißler R, Dennebouy L, Gogos A, Gerken LRH, Dommke M, Zimmermann M, Pais MA, Neuer AL, Matter MT, Kissling VM, de Brot S, Lese I, Herrmann IK. Protein Aggregation on Metal Oxides Governs Catalytic Activity and Cellular Uptake. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2311115. [PMID: 38556634 DOI: 10.1002/smll.202311115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 03/12/2024] [Indexed: 04/02/2024]
Abstract
Engineering of catalytically active inorganic nanomaterials holds promising prospects for biomedicine. Catalytically active metal oxides show applications in enhancing wound healing but have also been employed to induce cell death in photodynamic or radiation therapy. Upon introduction into a biological system, nanomaterials are exposed to complex fluids, causing interaction and adsorption of ions and proteins. While protein corona formation on nanomaterials is acknowledged, its modulation of nanomaterial catalytic efficacy is less understood. In this study, proteomic analyses and nano-analytic methodologies quantify and characterize adsorbed proteins, correlating this protein layer with metal oxide catalytic activity in vitro and in vivo. The protein corona comprises up to 280 different proteins, constituting up to 38% by weight. Enhanced complement factors and other opsonins on nanocatalyst surfaces lead to their uptake into macrophages when applied topically, localizing >99% of the nanomaterials in tissue-resident macrophages. Initially, the formation of the protein corona significantly reduces the nanocatalysts' activity, but this activity can be partially recovered in endosomal conditions due to the proteolytic degradation of the corona. Overall, the research reveals the complex relationship between physisorbed proteins and the catalytic characteristics of specific metal oxide nanoparticles, providing design parameters for optimizing nanocatalysts in complex biological environments.
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Affiliation(s)
- Robert Nißler
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, Sonneggstrasse 3, Zurich, 8092, Switzerland
- Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, St. Gallen, 9014, Switzerland
- The Ingenuity Lab, University Hospital Balgrist, University of Zurich, Forchstrasse 340, Zurich, 8008, Switzerland
| | - Lena Dennebouy
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, Sonneggstrasse 3, Zurich, 8092, Switzerland
| | - Alexander Gogos
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, Sonneggstrasse 3, Zurich, 8092, Switzerland
- Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, St. Gallen, 9014, Switzerland
| | - Lukas R H Gerken
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, Sonneggstrasse 3, Zurich, 8092, Switzerland
- Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, St. Gallen, 9014, Switzerland
| | - Maximilian Dommke
- Institute of Technical Chemistry and Environmental Chemistry, Friedrich Schiller University Jena, Philosophenweg 7a, 07743, Jena, Germany
| | - Monika Zimmermann
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, Sonneggstrasse 3, Zurich, 8092, Switzerland
- Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, St. Gallen, 9014, Switzerland
| | - Michael A Pais
- Department of Plastic and Hand Surgery, Inselspital, Bern University Hospital, Bern, 3010, Switzerland
| | - Anna L Neuer
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, Sonneggstrasse 3, Zurich, 8092, Switzerland
- Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, St. Gallen, 9014, Switzerland
| | - Martin T Matter
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, Sonneggstrasse 3, Zurich, 8092, Switzerland
- Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, St. Gallen, 9014, Switzerland
| | - Vera M Kissling
- Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, St. Gallen, 9014, Switzerland
| | - Simone de Brot
- COMPATH, Institute of Animal Pathology, University of Bern, Bern, 3012, Switzerland
| | - Ioana Lese
- Department of Plastic and Hand Surgery, Inselspital, Bern University Hospital, Bern, 3010, Switzerland
| | - Inge K Herrmann
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering (IEPE), Department of Mechanical and Process Engineering (D-MAVT), ETH Zurich, Sonneggstrasse 3, Zurich, 8092, Switzerland
- Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, St. Gallen, 9014, Switzerland
- The Ingenuity Lab, University Hospital Balgrist, University of Zurich, Forchstrasse 340, Zurich, 8008, Switzerland
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Pais MA, Papanikolaou A, Hoyos IA, Nißler R, De Brot S, Gogos A, Rieben R, Constantinescu MA, Matter MT, Herrmann IK, Lese I. Bioglass/ceria nanoparticle hybrids for the treatment of seroma: a comparative long-term study in rats. Front Bioeng Biotechnol 2024; 12:1363126. [PMID: 38532882 PMCID: PMC10963406 DOI: 10.3389/fbioe.2024.1363126] [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: 01/02/2024] [Accepted: 02/23/2024] [Indexed: 03/28/2024] Open
Abstract
Background: Seroma formation is a common postoperative complication. Fibrin-based glues are typically employed in an attempt to seal the cavity. Recently, the first nanoparticle (NP)-based treatment approaches have emerged. Nanoparticle dispersions can be used as tissue glues, capitalizing on a phenomenon known as 'nanobridging'. In this process, macromolecules such as proteins physically adsorb onto the NP surface, leading to macroscopic adhesion. Although significant early seroma reduction has been shown, little is known about long-term efficacy of NPs. The aim of this study was to assess the long-term effects of NPs in reducing seroma formation, and to understand their underlying mechanism. Methods: Seroma was surgically induced bilaterally in 20 Lewis rats. On postoperative day (POD) 7, seromas were aspirated on both sides. In 10 rats, one side was treated with NPs, while the contralateral side received only NP carrier solution. In the other 10 rats, one side was treated with fibrin glue, while the other was left untreated. Seroma fluid, blood and tissue samples were obtained at defined time points. Biochemical, histopathological and immunohistochemical assessments were made. Results: NP-treated sides showed no macroscopically visible seroma formation after application on POD 7, in stark contrast to the fibrin-treated sides, where 60% of the rats had seromas on POD 14, and 50% on POD 21. At the endpoint (POD 42), sides treated with nanoparticles (NPs) exhibited significant macroscopic differences compared to other groups, including the absence of a cavity, and increased fibrous adhesions. Histologically, there were more macrophage groupings and collagen type 1 (COL1) deposits in the superficial capsule on NP-treated sides. Conclusion: NPs not only significantly reduced early manifestations of seroma and demonstrated an anti-inflammatory response, but they also led to increased adhesion formation over the long term, suggesting a decreased risk of seroma recurrence. These findings highlight both the adhesive properties of NPs and their potential for clinical therapy.
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Affiliation(s)
- Michael-Alexander Pais
- Department of Plastic and Hand Surgery, Inselspital, University Hospital Bern, Bern, Switzerland
- Department for BioMedical Research, University of Bern, Bern, Switzerland
| | - Athanasios Papanikolaou
- Department of Plastic and Hand Surgery, Inselspital, University Hospital Bern, Bern, Switzerland
- Department for BioMedical Research, University of Bern, Bern, Switzerland
| | - Isabel Arenas Hoyos
- Department of Plastic and Hand Surgery, Inselspital, University Hospital Bern, Bern, Switzerland
- Department for BioMedical Research, University of Bern, Bern, Switzerland
| | - Robert Nißler
- Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), StGallen, Switzerland
- Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland
- Ingenuity Lab, University Hospital Balgrist and University of Zurich, Zurich, Switzerland
| | - Simone De Brot
- COMPATH, Institute of Animal Pathology, University of Bern, Bern, Switzerland
| | - Alexander Gogos
- Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), StGallen, Switzerland
| | - Robert Rieben
- Department for BioMedical Research, University of Bern, Bern, Switzerland
| | - Mihai A. Constantinescu
- Department of Plastic and Hand Surgery, Inselspital, University Hospital Bern, Bern, Switzerland
- Department for BioMedical Research, University of Bern, Bern, Switzerland
| | - Martin T. Matter
- Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), StGallen, Switzerland
- Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland
| | - Inge K. Herrmann
- Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), StGallen, Switzerland
- Department of Mechanical and Process Engineering, ETH Zurich, Zurich, Switzerland
- Ingenuity Lab, University Hospital Balgrist and University of Zurich, Zurich, Switzerland
| | - Ioana Lese
- Department of Plastic and Hand Surgery, Inselspital, University Hospital Bern, Bern, Switzerland
- Department for BioMedical Research, University of Bern, Bern, Switzerland
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Berry CE, Le T, An N, Griffin M, Januszyk M, Kendig CB, Fazilat AZ, Churukian AA, Pan PM, Wan DC. Pharmacological and cell-based treatments to increase local skin flap viability in animal models. J Transl Med 2024; 22:68. [PMID: 38233920 PMCID: PMC10792878 DOI: 10.1186/s12967-024-04882-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Accepted: 01/10/2024] [Indexed: 01/19/2024] Open
Abstract
Local skin flaps are frequently employed for wound closure to address surgical, traumatic, congenital, or oncologic defects. (1) Despite their clinical utility, skin flaps may fail due to inadequate perfusion, ischemia/reperfusion injury (IRI), excessive cell death, and associated inflammatory response. (2) All of these factors contribute to skin flap necrosis in 10-15% of cases and represent a significant surgical challenge. (3, 4) Once flap necrosis occurs, it may require additional surgeries to remove the entire flap or repair the damage and secondary treatments for infection and disfiguration, which can be costly and painful. (5) In addition to employing appropriate surgical techniques and identifying healthy, well-vascularized tissue to mitigate the occurrence of these complications, there is growing interest in exploring cell-based and pharmacologic augmentation options. (6) These agents typically focus on preventing thrombosis and increasing vasodilation and angiogenesis while reducing inflammation and oxidative stress. Agents that modulate cell death pathways such as apoptosis and autophagy have also been investigated. (7) Implementation of drugs and cell lines with potentially beneficial properties have been proposed through various delivery techniques including systemic treatment, direct wound bed or flap injection, and topical application. This review summarizes pharmacologic- and cell-based interventions to augment skin flap viability in animal models, and discusses both translatability challenges facing these therapies and future directions in the field of skin flap augmentation.
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Affiliation(s)
- Charlotte E Berry
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, 257 Campus Drive West, Stanford, CA, 94305, USA
| | - Thalia Le
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, 257 Campus Drive West, Stanford, CA, 94305, USA
| | - Nicholas An
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, 257 Campus Drive West, Stanford, CA, 94305, USA
| | - Michelle Griffin
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, 257 Campus Drive West, Stanford, CA, 94305, USA
| | - Micheal Januszyk
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, 257 Campus Drive West, Stanford, CA, 94305, USA
| | - Carter B Kendig
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, 257 Campus Drive West, Stanford, CA, 94305, USA
| | - Alexander Z Fazilat
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, 257 Campus Drive West, Stanford, CA, 94305, USA
| | - Andrew A Churukian
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, 257 Campus Drive West, Stanford, CA, 94305, USA
| | - Phoebe M Pan
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, 257 Campus Drive West, Stanford, CA, 94305, USA
| | - Derrick C Wan
- Hagey Laboratory for Pediatric Regenerative Medicine, Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University School of Medicine, 257 Campus Drive West, Stanford, CA, 94305, USA.
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Lancien U, Charbonnier B, Weiss P, Corre P, Perrot P. Rat Perforator and Skin Vessels Vascular Mapping: An Original Anatomical Study About 140 Vessels and Literature Review. J Surg Res 2023; 288:298-308. [PMID: 37058986 DOI: 10.1016/j.jss.2023.03.015] [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: 11/15/2022] [Revised: 02/21/2023] [Accepted: 03/14/2023] [Indexed: 04/16/2023]
Abstract
INTRODUCTION Recent microsurgical reconstruction techniques benefit from the use of skin and perforator flaps that spare the donor sites. Studies on these skin flaps in rat models are numerous but there is currently no reference regarding the position of the perforators, their caliber, and the length of the vascular pedicles. METHODS We performed an anatomical study on 10 Wistar rats and 140 vessels: cranial epigastric (CE), superficial inferior epigastric (SIE), lateral thoracic (LT), posterior thigh (PT), deep iliac circumflex (DCI) and posterior intercostal (PIC) vessels. The evaluation criteria were the external caliber, the length of the pedicle, and the position of the vessels reported on the skin surface. RESULTS Data from the six perforator vascular pedicles are reported, with figures illustrating the orthonormal reference frame, the representation of the vessel's position, the cloud of points corresponding to the various measurements, and the average representation of the collected data. The analysis of the literature does not find similar studies; the different vascular pedicles are discussed as well as the limitations of our study: evaluation of cadaver specimen, presence of the very mobile panniculus carnosus, other perforator vessels not evaluated as well as the precise definition of perforating vessels. CONCLUSIONS Our work describes the vascular calibers, pedicle lengths, and location of birth and arrival at the skin of the perforator vessels PT, DCI, PIC, LT, SIE, and CE in rat animal models. This work, without an equivalent in the literature, lays the foundation for future studies about flap perfusion, microsurgery, and super microsurgery learning.
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Affiliation(s)
- Ugo Lancien
- Plastic, Reconstructive, and Aesthetic Surgery Unit, Nantes University Hospital, Nantes, France; INSERM, UMRS 1229, Laboratory Regenerative Medicine and Skeleton (RMeS), Nantes, France; Université de Nantes, UFR Odontologie, Nantes, France.
| | - Baptiste Charbonnier
- INSERM, UMRS 1229, Laboratory Regenerative Medicine and Skeleton (RMeS), Nantes, France; Université de Nantes, UFR Odontologie, Nantes, France
| | - Pierre Weiss
- INSERM, UMRS 1229, Laboratory Regenerative Medicine and Skeleton (RMeS), Nantes, France; Université de Nantes, UFR Odontologie, Nantes, France
| | - Pierre Corre
- INSERM, UMRS 1229, Laboratory Regenerative Medicine and Skeleton (RMeS), Nantes, France; Maxillofacial surgery unit, Nantes University Hospital, Nantes, France; Université de Nantes, UFR Odontologie, Nantes, France
| | - Pierre Perrot
- Plastic, Reconstructive, and Aesthetic Surgery Unit, Nantes University Hospital, Nantes, France; INSERM, UMRS 1229, Laboratory Regenerative Medicine and Skeleton (RMeS), Nantes, France; Université de Nantes, UFR Odontologie, Nantes, France
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Solidum JGN, Ceriales JA, Ong EP, Ornos EDB, Relador RJL, Quebral EPB, Lapeña JFF, Tantengco OAG, Lee KY. Nanomedicine and nanoparticle-based delivery systems in plastic and reconstructive surgery. Maxillofac Plast Reconstr Surg 2023; 45:15. [PMID: 36995508 PMCID: PMC10060935 DOI: 10.1186/s40902-023-00383-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Accepted: 03/06/2023] [Indexed: 03/31/2023] Open
Abstract
BACKGROUND Nanotechnology and nanomedicine are rising novel fields in plastic and reconstructive surgery (PRS). The use of nanomaterials often goes with regenerative medicine. Due to their nanoscale, these materials stimulate repair at the cellular and molecular levels. Nanomaterials may be placed as components of nanocomposite polymers allowing enhancement of overall biochemical and biomechanical properties with improved scaffold properties, cellular attachment, and tissue regeneration. They may also be formulated as nanoparticle-based delivery systems for controlled release of signal factors or antimicrobials, for example. However, more studies on nanoparticle-based delivery systems still need to be done in this field. Nanomaterials are also used as frameworks for nerves, tendons, and other soft tissues. MAIN BODY In this mini-review, we focus on nanoparticle-based delivery systems and nanoparticles targeting cells for response and regeneration in PRS. Specifically, we investigate their roles in various tissue regeneration, skin and wound healing, and infection control. Cell surface-targeted, controlled-release, and inorganic nanoparticle formulations with inherent biological properties have enabled enhanced wound healing, tumor visualization/imaging, tissue viability, and decreased infection, and graft/transplantation rejection through immunosuppression. CONCLUSIONS Nanomedicine is also now being applied with electronics, theranostics, and advanced bioengineering technologies. Overall, it is a promising field that can improve patient clinical outcomes in PRS.
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Affiliation(s)
- Jea Giezl N Solidum
- MD-PhD (Molecular Medicine) Program, College of Medicine, University of the Philippines Manila, Ermita, Manila, 1000, Philippines
| | - Jeremy A Ceriales
- MD-PhD (Molecular Medicine) Program, College of Medicine, University of the Philippines Manila, Ermita, Manila, 1000, Philippines
| | - Erika P Ong
- College of Medicine, University of the Philippines Manila, Ermita, Manila, 1000, Philippines
| | - Eric David B Ornos
- MD-PhD (Molecular Medicine) Program, College of Medicine, University of the Philippines Manila, Ermita, Manila, 1000, Philippines
| | - Ruth Joy L Relador
- MD-PhD (Molecular Medicine) Program, College of Medicine, University of the Philippines Manila, Ermita, Manila, 1000, Philippines
| | - Elgin Paul B Quebral
- MD-PhD (Molecular Medicine) Program, College of Medicine, University of the Philippines Manila, Ermita, Manila, 1000, Philippines
| | - Jose Florencio F Lapeña
- Department of Otolaryngology - Head and Neck Surgery, Section of Craniomaxillofacial Plastic and Restorative Surgery, College of Medicine - Philippine General Hospital, University of the Philippines Manila, Ermita, Manila, 1000, Philippines
| | - Ourlad Alzeus G Tantengco
- Department of Physiology, College of Medicine, University of the Philippines Manila, Ermita, Manila, 1000, Philippines.
- Department of Biology, College of Science, De La Salle University, Manila, 1004, Philippines.
| | - Ka Yiu Lee
- Swedish Winter Sports Research Centre, Department of Health Sciences, Mid Sweden University, Östersund, Sweden.
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Albarqi HA, Garg A, Ahmad MZ, Alqahtani AA, Walbi IA, Ahmad J. Recent Progress in Chitosan-Based Nanomedicine for Its Ocular Application in Glaucoma. Pharmaceutics 2023; 15:pharmaceutics15020681. [PMID: 36840002 PMCID: PMC9963436 DOI: 10.3390/pharmaceutics15020681] [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: 12/14/2022] [Revised: 02/02/2023] [Accepted: 02/13/2023] [Indexed: 02/19/2023] Open
Abstract
Glaucoma is a degenerative, chronic ocular disease that causes irreversible vision loss. The major symptom of glaucoma is high intraocular pressure, which happens when the flow of aqueous humor between the front and back of the eye is blocked. Glaucoma therapy is challenging because of the low bioavailability of drugs from conventional ocular drug delivery systems such as eye drops, ointments, and gels. The low bioavailability of antiglaucoma agents could be due to the precorneal and corneal barriers as well as the low biopharmaceutical attributes of the drugs. These limitations can be overcome by employing nanoparticulate drug delivery systems. Over the last decade, there has been a lot of interest in chitosan-based nanoparticulate systems to overcome the limitations (such as poor residence time, low corneal permeability, etc.) associated with conventional ocular pharmaceutical products. Therefore, the main aim of the present manuscript is to review the recent research work involving the chitosan-based nanoparticulate system to treat glaucoma. It discusses the significance of the chitosan-based nanoparticulate system, which provides mucoadhesion to improve the residence time of drugs and their ocular bioavailability. Furthermore, different types of chitosan-based nanoparticulate systems are also discussed, namely nanoparticles of chitosan core only, nanoparticles coated with chitosan, and hybrid nanoparticles of chitosan. The manuscript also provides a critical analysis of contemporary research related to the impact of this chitosan-based nanomedicine on the corneal permeability, ocular bioavailability, and therapeutic performance of loaded antiglaucoma agents.
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Affiliation(s)
- Hassan A. Albarqi
- Department of Pharmaceutics, College of Pharmacy, Najran University, Najran 11001, Saudi Arabia
| | - Anuj Garg
- Institute of Pharmaceutical Research, GLA University, Mathura 281406, India
| | - Mohammad Zaki Ahmad
- Department of Pharmaceutics, College of Pharmacy, Najran University, Najran 11001, Saudi Arabia
| | - Abdulsalam A. Alqahtani
- Department of Pharmaceutics, College of Pharmacy, Najran University, Najran 11001, Saudi Arabia
| | - Ismail A. Walbi
- Department of Clinical Pharmacy, College of Pharmacy, Najran University, Najran 11001, Saudi Arabia
| | - Javed Ahmad
- Department of Pharmaceutics, College of Pharmacy, Najran University, Najran 11001, Saudi Arabia
- Correspondence: or
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Liu X, Wang J, Xu X, Zhu H, Man K, Zhang J. SDF-1 Functionalized Hydrogel Microcarriers for Skin Flap Repair. ACS Biomater Sci Eng 2022; 8:3576-3588. [PMID: 35899941 DOI: 10.1021/acsbiomaterials.2c00755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Critically sized skin flaps used to treat skin defects often suffer from necrosis due to insufficient blood supply. Hence there is an urgent need to improve the survival rate of skin flaps by promoting local angiogenesis. The delivery of growth factor loaded microcarriers have shown promise in enhancing defect repair, however, their rapid clearance from the defect site limits their regenerative potential. Thus, it is critical to develop microcarriers which can promote the sustained release of bioactive factors to effectively stimulate tissue repair. This study aimed to develop a stromal cell-derived factor 1 (SDF-1) loaded microcarrier coated with Matrigel (MC@SDF-1@Mat) to promote skin flap repair. SEM imaging showed that the surface of the microcarrier was coated by a porous Matrigel film. The drug release experiment showed that the Matrigel-coated microcarriers enhanced the sustained release of the model drug methylene blue when compared to uncoated group. MC@SDF-1@Mat significantly promoted the proliferation, migration, and angiogenesis of HUVECs via CCK-8, wound healing assay, and tube formation assay, respectively. Moreover, the murine random skin flap model was further established and treated. It was found that the flap necrosis area in the MC@SDF-1@Mat treated group was significantly reduced. H&E and Masson staining showed the histological structure and collagen organization exhibited a normal phenotype in the MC@SDF-1@Mat treated group. Additionally, CD31 immunohistochemical analysis showed that the MC@SDF-1@Mat treated group exhibited the greatest degree of neovascularization. In conclusion, our SDF-1 functionalized gelatin-based hydrogel microcarrier has potential clinical applications in promoting skin flap repair and drug delivery.
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Affiliation(s)
- Xiaochuan Liu
- Key Laboratory of 3D Printing Technology in Stomatology, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523710, P.R. China
| | - Jinsi Wang
- Key Laboratory of 3D Printing Technology in Stomatology, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523710, P.R. China
| | - Xiaoqin Xu
- Key Laboratory of 3D Printing Technology in Stomatology, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523710, P.R. China
| | - Hong Zhu
- Key Laboratory of 3D Printing Technology in Stomatology, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523710, P.R. China
| | - Kenny Man
- School of Chemical Engineering, University of Birmingham, Birmingham B15 2TT, United Kingdom
| | - Jingying Zhang
- Key Laboratory of 3D Printing Technology in Stomatology, The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan 523710, P.R. China
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Matter MT, Maliqi L, Keevend K, Guimond S, Ng J, Armagan E, Rottmar M, Herrmann IK. One-Step Synthesis of Versatile Antimicrobial Nano-Architected Implant Coatings for Hard and Soft Tissue Healing. ACS APPLIED MATERIALS & INTERFACES 2021; 13:33300-33310. [PMID: 34254508 DOI: 10.1021/acsami.1c10121] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Dental implant failure remains a prevalent problem around the globe. The integration of implants at the interface of soft and hard tissues is complex and susceptible to instability and infections. Modifications to the surface of titanium implants have been developed to improve the performance, yet insufficient integration and biofilm formation remain major problems. Introducing nanostructures on the surface to augment the implant-tissue contact holds promise for facilitated implant integration; however, current coating processes are limited in their versatility or costs. We present a highly modular single-step approach to produce multicomponent porous bioactive nanostructured coatings on implants. Inorganic nanoparticle building blocks with complex compositions and architectures are synthesized in situ and deposited on the implants in a single step using scalable liquid-feed flame spray pyrolysis. We present hybrid coatings based on ceria and bioglass, which render the implant surfaces superhydrophilic, promote cell adhesion, and exhibit antimicrobial properties. By modifications to the bioglass/ceria nanohybrid composition and architecture that prevent biomineralization, the coating can instead be tailored toward soft tissue healing. The one-step synthesis of nano-architected tissue-specific coatings has great potential in dental implantology and beyond.
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Affiliation(s)
- Martin T Matter
- Laboratory for Particles Biology Interactions, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
| | - Leonida Maliqi
- Laboratory for Particles Biology Interactions, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
| | - Kerda Keevend
- Laboratory for Particles Biology Interactions, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
| | - Stefanie Guimond
- Biointerfaces Laboratory, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
| | - Judith Ng
- Laboratory for Particles Biology Interactions, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
- Biointerfaces Laboratory, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
| | - Efe Armagan
- Laboratory for Biomimetic Membranes and Textiles, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
| | - Markus Rottmar
- Biointerfaces Laboratory, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
| | - Inge K Herrmann
- Laboratory for Particles Biology Interactions, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, CH-9014 St. Gallen, Switzerland
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, CH-8092 Zurich, Switzerland
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9
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Matter MT, Doppegieter M, Gogos A, Keevend K, Ren Q, Herrmann IK. Inorganic nanohybrids combat antibiotic-resistant bacteria hiding within human macrophages. NANOSCALE 2021; 13:8224-8234. [PMID: 33885075 PMCID: PMC8101700 DOI: 10.1039/d0nr08285f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 03/08/2021] [Indexed: 05/02/2023]
Abstract
Bacterial infections are one of the main health concerns humanity faces today and bacterial resistances and protection mechanisms are set to aggravate the issue in the coming years. An increasing number of bacterial strains evades antibiotic treatment by hiding inside cells. Conventional antimicrobial agents are unable to penetrate or be retained in the infected mammalian cells. Recent approaches to overcome these limitations have focused on load-carrier systems, requiring a triggered discharge leading to complex release kinetics. The unison of potent antimicrobial activity with high mammalian cell compatibility is a prerequisite for intracellular activity, which is not well-met by otherwise well-established inorganic systems, such as silver-based nanoparticles. In this work, load and carrier are combined into one functional inorganic nanoparticle system, which unites antimicrobial activity with mammalian cell compatibility. These multicomponent nanohybrids based on cerium oxide are produced in one step, yet unite complex materials. The nanoparticles form suprastructures of similar size and surface charge as bacteria, therefore facilitating the uptake into the same subcellular compartments, where they unleash their antibacterial effect. Such intrinsically antibacterial nanohybrids significantly reduce bacterial survival inside macrophages without harming the latter. Furthermore, blocking of nanoparticle endocytosis and subcellular electron microscopy elucidate the mechanism of action. Taken together, this work presents the first demonstration of antibacterial activity of ceria-based nanoparticles inside of mammalian cells and offers a route to straightforward and robust intracellular antibacterial agents that do not depend on payload delivery or biological constituents.
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Affiliation(s)
- Martin T. Matter
- Laboratory for Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa)Lerchenfeldstrasse 59014 St GallenSwitzerland+41 (0)58 765 71 53
- Nanoparticle Systems Engineering Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering, ETH ZurichSonneggstrasse 38092 ZurichSwitzerland
| | - Meagan Doppegieter
- Laboratory for Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa)Lerchenfeldstrasse 59014 St GallenSwitzerland+41 (0)58 765 71 53
| | - Alexander Gogos
- Laboratory for Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa)Lerchenfeldstrasse 59014 St GallenSwitzerland+41 (0)58 765 71 53
- Nanoparticle Systems Engineering Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering, ETH ZurichSonneggstrasse 38092 ZurichSwitzerland
| | - Kerda Keevend
- Laboratory for Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa)Lerchenfeldstrasse 59014 St GallenSwitzerland+41 (0)58 765 71 53
- Nanoparticle Systems Engineering Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering, ETH ZurichSonneggstrasse 38092 ZurichSwitzerland
| | - Qun Ren
- Laboratory for Biointerfaces, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa)Lerchenfeldstrasse 59014 St. GallenSwitzerland
| | - Inge K. Herrmann
- Laboratory for Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa)Lerchenfeldstrasse 59014 St GallenSwitzerland+41 (0)58 765 71 53
- Nanoparticle Systems Engineering Laboratory, Institute of Process Engineering, Department of Mechanical and Process Engineering, ETH ZurichSonneggstrasse 38092 ZurichSwitzerland
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10
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Lese I, Tsai C, Matter M, Wüthrich T, Scheer HS, Taddeo A, Constantinescu MA, Herrmann IK, Olariu R. Mixed Metal Oxide Nanoparticle Formulations for the Treatment of Seroma. ACS Biomater Sci Eng 2021; 7:2676-2686. [PMID: 33890779 DOI: 10.1021/acsbiomaterials.1c00283] [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: 11/29/2022]
Abstract
Seroma formation is a well-recognized postoperative complication for many plastic and general surgical procedures. Although various tissue adhesives and substances have been used in an effort to treat seroma formation, no therapies have been established clinically. Recently, the nano-bridging phenomenon has been introduced as a promising approach to achieve tissue adhesion and strong closure of deep skin wounds in rats. The present study seeks to assess the potential of nano-bridging beyond skin wounds in a rat model of seroma. Seromas were induced in 20 Lewis rats through bilateral axillary lymphadenectomy, excision of the latissimus dorsi and cutaneous maximus muscles, and disruption of dermal lymphatics. On postoperative day (POD) 7, the seroma was aspirated on both sides. A bioactive nanoparticle (NP) suspension based on zinc-doped strontium-substituted bioglass/ceria nanoparticles (NP group) or fibrin glue (fibrin group) was injected into the right seroma cavity, while the left side was left untreated. On POD 14, the NP group showed complete remission (no seromas at all), while the fibrin group recorded a reduction of only 63% in the seroma fluid volume. The NPs exerted local anti-inflammatory and neo-angiogenic effects, without any detectable systemic changes. Moreover, the ceria levels recorded in the organs did not surpass the background level, indicating that the nanoparticles stayed at the site of application. This study is a promising first example demonstrating the ability of inorganic nanoparticle formulations to reduce seroma formation in a rat model, without any detectable systemic adverse effects. These results emphasize the potential of nanotechnological solutions in the therapeutic management of seroma in the clinical setting.
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Affiliation(s)
- Ioana Lese
- Department of Plastic and Hand Surgery, Inselspital, Bern University Hospital, Freiburgstrasse 4, 3010 Bern, Switzerland
| | - Catherine Tsai
- Department for Biomedical Research, University of Bern, Murtenstrasse 50, 3008 Bern, Switzerland
| | - Martin Matter
- Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland.,Nanoparticle Systems Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, 8092 Zurich, Switzerland
| | - Tsering Wüthrich
- Department for Biomedical Research, University of Bern, Murtenstrasse 50, 3008 Bern, Switzerland
| | - Helene Sophie Scheer
- Department of Plastic and Hand Surgery, Inselspital, Bern University Hospital, Freiburgstrasse 4, 3010 Bern, Switzerland
| | - Adriano Taddeo
- Department for Biomedical Research, University of Bern, Murtenstrasse 50, 3008 Bern, Switzerland
| | - Mihai Adrian Constantinescu
- Department of Plastic and Hand Surgery, Inselspital, Bern University Hospital, Freiburgstrasse 4, 3010 Bern, Switzerland
| | - Inge Katrin Herrmann
- Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland.,Nanoparticle Systems Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, 8092 Zurich, Switzerland
| | - Radu Olariu
- Department of Plastic and Hand Surgery, Inselspital, Bern University Hospital, Freiburgstrasse 4, 3010 Bern, Switzerland
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11
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Bali U, Aydemir I, Keçeci Y, Yoleri L, Tuğlu Mİ. Effects of oxidative stress and apoptosis on vascularity and viability of perforator flaps. Biotech Histochem 2020; 96:526-535. [PMID: 33107764 DOI: 10.1080/10520295.2020.1831066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
We investigated lateral thoracic and posterior thigh perforator flaps for viability, vascularization, perfusion and apoptosis in a rat model. Wistar albino rats were divided into six groups: lateral thoracic artery perforator flap (LTPF) sham, 3 × 2 cm2 LTPF, 3 × 6 cm2 LTPF, posterior thigh perforator flap (PTPF) sham, 3 × 2 cm2 PTPF, and 3 × 6 cm2 PTPF. Flap viability was determined on postoperative days 1 and 7. On day 7, flaps were photographed and their viability was measured using two-dimensional planimeter paper. Tissue samples were harvested for examination by histology and immunohistochemistry. Viability differences were statistically significant. Epithelial thickness, vascularity and number of fibroblasts were reduced in the 3 × 6 cm2 groups. Neovascularization and apoptosis based on molecular tests were not significantly different among groups. Flap size and location are important factors for closure of surgical or traumatic defects. We suggest that for clinical application, wound complications will occur less frequently with perforators that nourish large areas of flaps.
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Affiliation(s)
- Ulaş Bali
- Faculty of Medicine, Department of Plastic, Reconstructive and Aesthetic Surgery, Manisa Celal Bayar University, Manisa, Turkey
| | - Işıl Aydemir
- Faculty of Medicine, Department of Histology and Embryology, Niğde Ömer Halisdemir University, Niğde, Turkey
| | - Yavuz Keçeci
- Faculty of Medicine, Department of Plastic, Reconstructive and Aesthetic Surgery, Manisa Celal Bayar University, Manisa, Turkey
| | - Levent Yoleri
- Faculty of Medicine, Department of Plastic, Reconstructive and Aesthetic Surgery, Manisa Celal Bayar University, Manisa, Turkey
| | - Mehmet İbrahim Tuğlu
- Faculty of Medicine, Department of Histology and Embryology, Manisa Celal Bayar University, Manisa, Turkey
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12
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Matter MT, Probst S, Läuchli S, Herrmann IK. Uniting Drug and Delivery: Metal Oxide Hybrid Nanotherapeutics for Skin Wound Care. Pharmaceutics 2020; 12:E780. [PMID: 32824470 PMCID: PMC7465174 DOI: 10.3390/pharmaceutics12080780] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/10/2020] [Accepted: 08/12/2020] [Indexed: 02/06/2023] Open
Abstract
Wound care and soft tissue repair have been a major human concern for millennia. Despite considerable advancements in standards of living and medical abilities, difficult-to-heal wounds remain a major burden for patients, clinicians and the healthcare system alike. Due to an aging population, the rise in chronic diseases such as vascular disease and diabetes, and the increased incidence of antibiotic resistance, the problem is set to worsen. The global wound care market is constantly evolving and expanding, and has yielded a plethora of potential solutions to treat poorly healing wounds. In ancient times, before such a market existed, metals and their ions were frequently used in wound care. In combination with plant extracts, they were used to accelerate the healing of burns, cuts and combat wounds. With the rise of organic chemistry and small molecule drugs and ointments, researchers lost their interest in inorganic materials. Only recently, the advent of nano-engineering has given us a toolbox to develop inorganic materials on a length-scale that is relevant to wound healing processes. The robustness of synthesis, as well as the stability and versatility of inorganic nanotherapeutics gives them potential advantages over small molecule drugs. Both bottom-up and top-down approaches have yielded functional inorganic nanomaterials, some of which unite the wound healing properties of two or more materials. Furthermore, these nanomaterials do not only serve as the active agent, but also as the delivery vehicle, and sometimes as a scaffold. This review article provides an overview of inorganic hybrid nanotherapeutics with promising properties for the wound care field. These therapeutics include combinations of different metals, metal oxides and metal ions. Their production, mechanism of action and applicability will be discussed in comparison to conventional wound healing products.
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Affiliation(s)
- Martin T. Matter
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, 8092 Zurich, Switzerland;
- Laboratory for Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
| | - Sebastian Probst
- School of Health Sciences, HES-SO University of Applied Sciences and Arts Western Switzerland, Avenue de Champel 47, 1206 Geneva, Switzerland;
| | - Severin Läuchli
- Department of Dermatology, University Hospital Zurich, Rämistrasse 100, 8091 Zurich, Switzerland;
| | - Inge K. Herrmann
- Nanoparticle Systems Engineering Laboratory, Institute of Energy and Process Engineering, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, 8092 Zurich, Switzerland;
- Laboratory for Particles-Biology Interactions, Department of Materials Meet Life, Swiss Federal Laboratories for Materials Science and Technology (Empa), Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
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13
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Matter MT, Li J, Lese I, Schreiner C, Bernard L, Scholder O, Hubeli J, Keevend K, Tsolaki E, Bertero E, Bertazzo S, Zboray R, Olariu R, Constantinescu MA, Figi R, Herrmann IK. Multiscale Analysis of Metal Oxide Nanoparticles in Tissue: Insights into Biodistribution and Biotransformation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2000912. [PMID: 32775166 PMCID: PMC7404155 DOI: 10.1002/advs.202000912] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/22/2020] [Indexed: 05/05/2023]
Abstract
Metal oxide nanoparticles have emerged as exceptionally potent biomedical sensors and actuators due to their unique physicochemical features. Despite fascinating achievements, the current limited understanding of the molecular interplay between nanoparticles and the surrounding tissue remains a major obstacle in the rationalized development of nanomedicines, which is reflected in their poor clinical approval rate. This work reports on the nanoscopic characterization of inorganic nanoparticles in tissue by the example of complex metal oxide nanoparticle hybrids consisting of crystalline cerium oxide and the biodegradable ceramic bioglass. A validated analytical method based on semiquantitative X-ray fluorescence and inductively coupled plasma spectrometry is used to assess nanoparticle biodistribution following intravenous and topical application. Then, a correlative multiscale analytical cascade based on a combination of microscopy and spectroscopy techniques shows that the topically applied hybrid nanoparticles remain at the initial site and are preferentially taken up into macrophages, form apatite on their surface, and lead to increased accumulation of lipids in their surroundings. Taken together, this work displays how modern analytical techniques can be harnessed to gain unprecedented insights into the biodistribution and biotransformation of complex inorganic nanoparticles. Such nanoscopic characterization is imperative for the rationalized engineering of safe and efficacious nanoparticle-based systems.
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Affiliation(s)
- Martin T. Matter
- Particles‐Biology Interactions, Department of Materials Meet LifeSwiss Federal Laboratories for Materials Science and Technology (Empa)Lerchenfeldstrasse 5St. Gallen9014Switzerland
- Nanoparticle Systems Engineering LaboratoryInstitute of Process EngineeringDepartment of Mechanical and Process EngineeringETH ZurichSonneggstrasse 3Zurich8092Switzerland
| | - Jian‐Hao Li
- Particles‐Biology Interactions, Department of Materials Meet LifeSwiss Federal Laboratories for Materials Science and Technology (Empa)Lerchenfeldstrasse 5St. Gallen9014Switzerland
- Nanoparticle Systems Engineering LaboratoryInstitute of Process EngineeringDepartment of Mechanical and Process EngineeringETH ZurichSonneggstrasse 3Zurich8092Switzerland
| | - Ioana Lese
- Department of Plastic and Hand SurgeryUniversity Hospital Bern (Inselspital)University of BernBern3010Switzerland
| | - Claudia Schreiner
- Advanced Analytical TechnologiesSwiss Federal Laboratories for Materials Science and Technology (Empa)Uberlandstrasse 129Dubendorf8600Switzerland
| | - Laetitia Bernard
- Nanoscale MaterialsDepartment of Materials Meet LifeSwiss Federal Laboratories for Materials Science and Technology (Empa)Uberlandstrasse 129Dubendorf8600Switzerland
| | - Olivier Scholder
- Nanoscale MaterialsDepartment of Materials Meet LifeSwiss Federal Laboratories for Materials Science and Technology (Empa)Uberlandstrasse 129Dubendorf8600Switzerland
| | - Jasmin Hubeli
- Advanced Analytical TechnologiesSwiss Federal Laboratories for Materials Science and Technology (Empa)Uberlandstrasse 129Dubendorf8600Switzerland
| | - Kerda Keevend
- Particles‐Biology Interactions, Department of Materials Meet LifeSwiss Federal Laboratories for Materials Science and Technology (Empa)Lerchenfeldstrasse 5St. Gallen9014Switzerland
- Nanoparticle Systems Engineering LaboratoryInstitute of Process EngineeringDepartment of Mechanical and Process EngineeringETH ZurichSonneggstrasse 3Zurich8092Switzerland
| | - Elena Tsolaki
- Particles‐Biology Interactions, Department of Materials Meet LifeSwiss Federal Laboratories for Materials Science and Technology (Empa)Lerchenfeldstrasse 5St. Gallen9014Switzerland
- Nanoparticle Systems Engineering LaboratoryInstitute of Process EngineeringDepartment of Mechanical and Process EngineeringETH ZurichSonneggstrasse 3Zurich8092Switzerland
- Department of Medical Physics and Biomedical EngineeringUniversity College London (UCL)Malet Place Engineering BuildingLondonWC1E 6BTUK
| | - Enrico Bertero
- Mechanics of Materials and NanostructuresSwiss Federal Laboratories for Materials Science and Technology (Empa)Feuerwerkerstrasse 39Thun3602Switzerland
| | - Sergio Bertazzo
- Department of Medical Physics and Biomedical EngineeringUniversity College London (UCL)Malet Place Engineering BuildingLondonWC1E 6BTUK
| | - Robert Zboray
- Center for X‐ray AnalyticsSwiss Federal Laboratories for Materials Science and Technology (Empa)Uberlandstrasse 129Dubendorf8600Switzerland
| | - Radu Olariu
- Department of Plastic and Hand SurgeryUniversity Hospital Bern (Inselspital)University of BernBern3010Switzerland
| | - Mihai A. Constantinescu
- Department of Plastic and Hand SurgeryUniversity Hospital Bern (Inselspital)University of BernBern3010Switzerland
| | - Renato Figi
- Advanced Analytical TechnologiesSwiss Federal Laboratories for Materials Science and Technology (Empa)Uberlandstrasse 129Dubendorf8600Switzerland
| | - Inge K. Herrmann
- Particles‐Biology Interactions, Department of Materials Meet LifeSwiss Federal Laboratories for Materials Science and Technology (Empa)Lerchenfeldstrasse 5St. Gallen9014Switzerland
- Nanoparticle Systems Engineering LaboratoryInstitute of Process EngineeringDepartment of Mechanical and Process EngineeringETH ZurichSonneggstrasse 3Zurich8092Switzerland
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14
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Lu W, Bao D, Ta F, Liu D, Zhang D, Zhang Z, Fan Z. Multifunctional Alginate Hydrogel Protects and Heals Skin Defects in Complex Clinical Situations. ACS OMEGA 2020; 5:17152-17159. [PMID: 32715200 PMCID: PMC7377546 DOI: 10.1021/acsomega.0c01108] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Accepted: 06/23/2020] [Indexed: 05/13/2023]
Abstract
Skin defects, soft tissue damage, and fractures often occur simultaneously in severe trauma. Under current medical technology, fractures can be quickly fixed by internal or external repair techniques, and early functional exercises can be performed. However, skin defects heal over a long time and can even be difficult to heal. Functional exercise may cause cutting of fresh granulation to break and impair wound healing. Functional exercise and wound healing seem to contradict each other. In this study, an alginate hydrogel was developed. With self-healing characteristics, the hydrogel tightly adhered to the wound and could self-heal breaks in the gel caused by functional exercises. These characteristics enable this hydrogel to be used in complex clinical situations to solve sports rehabilitation and skin defect repair problems. In addition, this hydrogel can slowly release strontium ions, promote angiogenesis and collagen deposition in the wound, and quickly heal the wound.
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Affiliation(s)
- Wei Lu
- Department
of Orthopaedic Surgery, The First Affiliated
Hospital of Jinzhou Medical University, Liaoning 121001, PR China
| | - Dongyan Bao
- Basic
Medical College, Jinzhou Medical University, Liaoning 121001, PR China
| | - Fangxin Ta
- Health
Management Center, The First Affiliated
Hospital of Jinzhou Medical University, Liaoning 121001, PR China
| | - Danping Liu
- Department
of Orthopaedic Surgery, The First Affiliated
Hospital of Jinzhou Medical University, Liaoning 121001, PR China
| | - Dezhi Zhang
- Department
of Orthopaedic Surgery, The First Affiliated
Hospital of Jinzhou Medical University, Liaoning 121001, PR China
| | - Zheng Zhang
- Department
of Orthopaedic Surgery, The First Affiliated
Hospital of Jinzhou Medical University, Liaoning 121001, PR China
| | - Zhongkai Fan
- Department
of Orthopaedic Surgery, The First Affiliated
Hospital of Jinzhou Medical University, Liaoning 121001, PR China
- . Tel: +86-0416-4197673
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15
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Pak CS, Moon SY, Lee YE, Kang HJ. Therapeutic Effects against Tissue Necrosis of Remote Ischemic Preconditioning Combined with Human Adipose-Derived Stem Cells in Random-Pattern Skin Flap Rat Models. J INVEST SURG 2020; 34:1304-1311. [PMID: 32691637 DOI: 10.1080/08941939.2020.1795750] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
INTRODUCTION Remote ischemic preconditioning (rIPC) is a preventive strategy against ischemia-reperfusion injury. To reduce ischemia-reperfusion injury of random-pattern skin flaps, we investigated the therapeutic effects of rIPC combined with human adipose-derived stem cells (hADSCs) in a rat model. MATERIAL AND METHODS In total, 24 female Sprague Dawley rats were divided into four groups (n = 6 each): control (skin flap only), rIPC, hADSCs, and rIPC + hADSCs. rIPC was performed in the hind limb of the rats over three cycles of 5 min of occlusion and 5 min of reperfusion, using a tourniquet. A rectangular (3 × 9 cm) dorsal skin flap was used. hADSCs (5 × 105 cells/100 µL) labeled with fluorescent dye were transplanted into the normal subcutaneous tissue at the skin flap boundary. After 14 days, the therapeutic effects of rIPC and hADSCs were evaluated via analysis of the necrotic flap area, histopathologic assessment, and immunohistochemistry (von Willebrand Factor (vWF) and CD31). RESULTS The necrotic area of the skin flap significantly decreased in the rIPC + hADSCs group (32.75 ± 1.43%) compared with the control (40.60 ± 3.27%, P < 0.01) and rIPC groups (38.84 ± 0.77%, P < 0.05). Dye-labeled hADSCs migrated to the skin flap from the injection site. In the rIPC + hADSCs group, the epithelial tissue and skin appendage had regenerated, and the smooth muscle and subcutaneous fat layers were preserved. Many more vWF- and CD31-positive vessels were observed in the rIPC + hADSCs group compared with the other groups. CONCLUSIONS The rIPC + hADSCs treatment appeared to reduce skin flap necrosis and activated neovascularization in rats. Therefore, it may be a good strategy for clinical treatment of ischemia-reperfusion injury.
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Affiliation(s)
- Chang Sik Pak
- Department of Plastic and Reconstructive Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Gyeonggi-do, Korea.,Department of Plastic and Reconstructive Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Soo Young Moon
- Biomedical Research Center, Korea University Ansan Hospital, Ansan, Gyeonggi-do, Korea
| | - Young Eun Lee
- Department of Plastic and Reconstructive Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hyo Jin Kang
- Department of Plastic and Reconstructive Surgery, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Gyeonggi-do, Korea.,Biomedical Research Center, Korea University Ansan Hospital, Ansan, Gyeonggi-do, Korea
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