1
|
Lee JY, Kim JH, Freedman BR, Mooney DJ. Motion-Accommodating Dual-Layer Hydrogel Dressing to Deliver Adipose-Derived Stem Cells to Wounds. Tissue Eng Regen Med 2024; 21:843-854. [PMID: 38850485 PMCID: PMC11286926 DOI: 10.1007/s13770-024-00651-3] [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: 01/11/2024] [Revised: 04/16/2024] [Accepted: 05/07/2024] [Indexed: 06/10/2024] Open
Abstract
BACKGROUND Current dressing materials cannot secure a cell survival-promoting wound environment for stem cell delivery due to insufficient assimilation to skin motion. The authors developed a novel motion-accommodating dual-layer hydrogel dressing for stem cell delivery into such wounds. METHODS Dorsal hand skin movement was evaluated to determine the potential range of deformation for a dressing. The outer hydrogel (OH) was fabricated with an alginate-acrylamide double-network hydrogel with a covalently cross-linked elastomer coat. The tough adhesive consisted of a chitosan-based bridging polymer and coupling reagents. OH material properties and adhesiveness on porcine skin were measured. An oxidized alginate-based inner hydrogel (IH) containing human adipose-derived stem cells (ASCs) was evaluated for cell-supporting and cell-releasing properties. The OH's function as a secondary dressing, and dual-layer hydrogel cell delivery potential in wounds were assessed in a rodent model. RESULTS The dual-layer hydrogel consisted of OH and IH. The OH target range of deformation was up to 25% strain. The OH adhered to porcine skin, and showed significantly higher adhesion energy than common secondary dressings and endured 900 flexion-extension cycles without detachment. OH showed a similar moisture vapor transmission rate as moisture-retentive dressings. IH maintained embedded cell survival for three days with significant cell release on the contacting surface. OH showed less fibrotic wound healing than other secondary dressings in vivo. The dual-layer hydrogel successfully delivered ASCs into open wounds of nude mice (13 ± 3 cells/HPF). CONCLUSIONS The novel dual-layer hydrogel can accommodate patient movement and deliver ASCs into the wound bed by securing the wound microenvironment.
Collapse
Affiliation(s)
- Jun Yong Lee
- Department of Plastic and Reconstructive Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, 319 Pierce Hall, Cambridge, MA, 02138, USA.
- Department of Plastic and Reconstructive Surgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 56, Dongsu-ro, Bupyeong-gu, Incheon, 21431, Republic of Korea.
| | - Jie Hyun Kim
- Department of Plastic and Reconstructive Surgery, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Department of Plastic and Reconstructive Surgery, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 56, Dongsu-ro, Bupyeong-gu, Incheon, 21431, Republic of Korea
| | - Benjamin R Freedman
- Department of Orthopaedic Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, 319 Pierce Hall, Cambridge, MA, 02138, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, USA
| | - David J Mooney
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, 319 Pierce Hall, Cambridge, MA, 02138, USA.
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, USA.
| |
Collapse
|
2
|
D'Andrea V, Pittiruti M, Prontera G, Vento G, Barone G. The SIECC protocol: A novel insertion bundle to minimize the complications related to epicutaneo-cava catheters in neonates. J Vasc Access 2024:11297298241239699. [PMID: 38641817 DOI: 10.1177/11297298241239699] [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: 04/21/2024] Open
Abstract
Epicutaneo-cava catheters are the most widely used central venous catheters in the neonate, but their insertion and management are potentially associated with several complications, both during placement (failure to proceed with the catheter, primary malposition, etc.) and during maintenance (infection, venous thrombosis, catheter dislocation, secondary malposition, etc.). Recent studies have identified methods and techniques that may be effective in minimizing the risk of most of these complications. This paper proposes a structured, sequential insertion bundle-nicknamed "the SIECC protocol" (SIECC = Safe Insertion of Epicutaneo-Cava Catheters)-which includes seven evidence-based strategies which have been proven to increase the safety, effectiveness, and cost-effectiveness of the procedure.
Collapse
Affiliation(s)
- Vito D'Andrea
- Neonatal Intensive Care Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Lazio, Italy
| | - Mauro Pittiruti
- Department of Surgery, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Lazio, Italy
| | - Giorgia Prontera
- Neonatal Intensive Care Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Lazio, Italy
| | - Gianni Vento
- Neonatal Intensive Care Unit, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Lazio, Italy
| | - Giovanni Barone
- Neonatal Intensive Care Unit, Infermi Hospital, AUSL della Romagna, Rimini, Emilia-Romagna, Italy
| |
Collapse
|
3
|
Jain A, Abraham S, Krishnamurthy S, Desai K, Basappa Veerabhadraiah B. Development of PU foam dressings loaded with extract of Plectranthus amboinicus for burn wound healing. Drug Dev Ind Pharm 2024; 50:248-261. [PMID: 38317433 DOI: 10.1080/03639045.2024.2315494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 02/02/2024] [Indexed: 02/07/2024]
Abstract
OBJECTIVE To develop Plectranthus amboinicus extract loaded Polyurethane foam dressing for burn wound healing. SIGNIFICANCE Plectranthus amboinicus is traditionally used as an anti-inflammatory and wound-healing agent. Its incorporation in a PU foam dressing will offer the dual benefits of foam dressing as well as the healing potential of P. amboinicus. METHODS PU foam dressings were prepared and loaded with P. ambionicus leaf extract (PAE). The dressings were prepared with varying concentrations (0.5-2%) of extract along with Toluene diisocyanate, polypropylene glycol (PPG), and liquid paraffin. The dressings were characterized by Scanning Electron Microscopy and evaluated for Moisture Vapor Transmission Rate, absorption rate, porosity, and mechanical strength followed by in vivo burn wound-healing studies in comparison to a marketed dressing. RESULTS The MVTR was found to be optimum in formulations FD2-FD4 with values ranging from 2068.06 ± 0.99 to 2095.00 ± 0.25 g/m2/day. Absorption rate was found to be between 1.27 ± 0.01, 1.31 ± 0.00, and 1.30 ± 0.02 g/cm2 for formulations FD2-FD4. Formulations FD1, FD2, FD3, FD4 showed better porosity when compared to other formulations. Formulation FD4 was further characterized by micro-CT and a porosity of 46.32% was obtained. Tensile strength measurement indicated that the selected formulations were flexible enough to withstand regular handling during dressing changes. Acute dermal irritation performed on rabbits showed no irritation, erythema, eschar, and edema. In vivo wound-healing studies performed on albino wistar rats showed that the FD4 formulation has better wound healing property. CONCLUSION Plectranthus ambionicus-loaded PU foam dressing demonstrated promising burn wound-healing potential.
Collapse
Affiliation(s)
- Akhila Jain
- Department of Pharmaceutics, Faculty of Pharmacy, M S Ramaiah University of Applied Sciences, Bengaluru, Karnataka, India
| | - Sindhu Abraham
- Department of Pharmaceutics, Faculty of Pharmacy, M S Ramaiah University of Applied Sciences, Bengaluru, Karnataka, India
| | - Shwetha Krishnamurthy
- Department of Pharmaceutics, Faculty of Pharmacy, M S Ramaiah University of Applied Sciences, Bengaluru, Karnataka, India
| | - Kesha Desai
- Department of Pharmacology, Faculty of Pharmacy, M S Ramaiah University of Applied Sciences, Bengaluru, Karnataka, India
| | | |
Collapse
|
4
|
Brescia F, Pittiruti M, Spencer TR, Dawson RB. The SIP protocol update: Eight strategies, incorporating Rapid Peripheral Vein Assessment (RaPeVA), to minimize complications associated with peripherally inserted central catheter insertion. J Vasc Access 2024; 25:5-13. [PMID: 35633065 PMCID: PMC10845830 DOI: 10.1177/11297298221099838] [Citation(s) in RCA: 31] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 04/21/2022] [Indexed: 11/15/2022] Open
Abstract
Insertion of Peripherally Inserted Central Catheters (PICCs) is potentially associated with the risk of immediate/early adverse events, some of them minimal (repeated punctures) and some relevant (accidental arterial puncture or nerve-related injury). Several strategies adopted during the insertion process may minimize the risk of such events, including late complication risks such as infection, venous thrombosis, or catheter dislodgment and/or malposition. This paper describes an update version of the SIP protocol (Safe Insertion of PICCs), an insertion bundle which includes eight effective strategies that aims to minimize immediate, early, or late insertion-associated complications. These strategies include: preprocedural ultrasound assessment utilizing the RaPeVA (Rapid Peripheral Venous Assessment) protocol; appropriate skin antiseptic technique; choice of appropriate vein, adoption of the Zone Insertion Method™; clear identification of the median nerve and brachial artery; ultrasound-guided puncture; ultrasound-guided tip navigation; intra-procedural assessment of tip location; correct securement of the catheter, and appropriate protection of the exit site. This updated version of the SIP protocol includes several novelties based on the most recent evidence-based scientific literature on PICC insertion, such as the clinical relevance of the tunneling technique, the use of ultrasound for intra-procedural tip navigation and tip location, and the new technologies for the protection of the exit site (cyanoacrylate glue) and for the securement of the catheter (subcutaneous anchorage).
Collapse
Affiliation(s)
- Fabrizio Brescia
- Unit of Anesthesia and Intensive Care, Centro di Riferimento Oncologico di Aviano, IRCCS, Aviano, Italy
| | - Mauro Pittiruti
- Department of Surgery, Fondazione Policlinico Universitario “A.Gemelli,” IRCCS, Rome, Italy
| | | | - Robert B Dawson
- Hospital Medicine and Vascular Access, Catholic Medical Center – Upper Connecticut Valley Hospital, Colebrook, NH, USA
| |
Collapse
|
5
|
Pittiruti M, Celentano D, Barone G, D'Andrea V, Annetta MG, Conti G. A GAVeCeLT bundle for central venous catheterization in neonates and children: A prospective clinical study on 729 cases. J Vasc Access 2023; 24:1477-1488. [PMID: 35533085 DOI: 10.1177/11297298221074472] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND In the pediatric patient, central venous catheterization may be associated with relevant complications. Though, most of them may be prevented by a wise choice of materials, methods, and techniques. Evidence-based insertion bundles for central venous catheterization have been developed in the adult patient, but not in neonates and children. METHODS The Italian Group for Long Term Venous Access Devices (GAVeCeLT) has developed an insertion bundle for central venous catheterization in neonates, infants, and children, which includes seven evidence-based strategies: (1) preprocedural ultrasound evaluation, (2) appropriate aseptic technique, (3) ultrasound guided venipuncture, (4) intraprocedural tip location by non-radiological methods, (5) proper choice of the exit site by tunneling, (6) sutureless securement, and (7) protection of the exit site using glue and transparent membranes. The effectiveness and safety of this bundle has been tested in a prospective study. RESULTS All neonates, infants and children requiring a non-emergency central line (except for umbilical venous catheters and epicutaneo-cava catheters) were included in the study. Out of 729 central line insertions, there were no immediate complications (no pneumothorax, no arterial puncture, no malposition); the incidence of early and late complications (local ecchymosis, dislodgment, local pain, exit site infection) was 3.7%; in the first 2 weeks after insertion, no catheter-related bacterial infection or catheter-related thrombosis was recorded. CONCLUSION The results of this prospective study strongly validate the hypothesis that an insertion bundle is highly effective in optimizing the safety of the maneuver, reducing immediate, early, and late complications.
Collapse
Affiliation(s)
- Mauro Pittiruti
- Department of Surgery, University Hospital "A. Gemelli," Rome, Italy
| | - Davide Celentano
- Pediatric Intensive Care Unit, University Hospital "A. Gemelli," Rome, Italy
| | - Giovanni Barone
- Neonatal Intensive Care Unit, "Infermi" Hospital, Rimini, Italy
| | - Vito D'Andrea
- Neonatal Intensive Care Unit, University Hospital "A. Gemelli," Rome, Italy
| | | | - Giorgio Conti
- Pediatric Intensive Care Unit, University Hospital "A. Gemelli," Rome, Italy
| |
Collapse
|
6
|
Guiomar AJ, Urbano AM. Polyhexanide-Releasing Membranes for Antimicrobial Wound Dressings: A Critical Review. MEMBRANES 2022; 12:1281. [PMID: 36557188 PMCID: PMC9781366 DOI: 10.3390/membranes12121281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/13/2022] [Accepted: 12/14/2022] [Indexed: 06/17/2023]
Abstract
The prevalence of chronic, non-healing skin wounds in the general population, most notably diabetic foot ulcers, venous leg ulcers and pressure ulcers, is approximately 2% and is expected to increase, driven mostly by the aging population and the steady rise in obesity and diabetes. Non-healing wounds often become infected, increasing the risk of life-threatening complications, which poses a significant socioeconomic burden. Aiming at the improved management of infected wounds, a variety of wound dressings that incorporate antimicrobials (AMDs), namely polyhexanide (poly(hexamethylene biguanide); PHMB), have been introduced in the wound-care market. However, many wound-care professionals agree that none of these wound dressings show comprehensive or optimal antimicrobial activity. This manuscript summarizes and discusses studies on PHMB-releasing membranes (PRMs) for wound dressings, detailing their preparation, physical properties that are relevant to the context of AMDs, drug loading and release, antibacterial activity, biocompatibility, wound-healing capacity, and clinical trials conducted. Some of these PRMs were able to improve wound healing in in vivo models, with no associated cytotoxicity, but significant differences in study design make it difficult to compare overall efficacies. It is hoped that this review, which includes, whenever available, international standards for testing AMDs, will provide a framework for future studies.
Collapse
Affiliation(s)
- António Jorge Guiomar
- Chemical Process Engineering and Forest Products Research Centre, Department of Life Sciences, University of Coimbra, 3000-456 Coimbra, Portugal
| | - Ana M. Urbano
- Molecular Physical-Chemistry R&D Unit, Center of Investigation in Environment, Genetics and Oncobiology-CIMAGO, Department of Life Sciences, University of Coimbra, 3000-456 Coimbra, Portugal
| |
Collapse
|