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Gupta S, Puttaiahgowda YM, Deiglmayr L. Recent advances in the design and immobilization of heparin for biomedical application: A review. Int J Biol Macromol 2024; 264:130743. [PMID: 38462098 DOI: 10.1016/j.ijbiomac.2024.130743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 03/06/2024] [Accepted: 03/07/2024] [Indexed: 03/12/2024]
Abstract
Heparin, a member of the glycosaminoglycan family, is renowned as the most negatively charged biomolecule discovered within the realm of human biology. This polysaccharide serves a vital role as a regulator for various proteins, cells, and tissues within the human body, positioning itself as a pivotal macromolecule of significance. The domain of biology has witnessed substantial interest in the intricate design of heparin and its derivatives, particularly focusing on heparin-based polymers and hydrogels. This intrigue spans a wide spectrum of applications, encompassing diverse areas such as protein adsorption, anticoagulant properties, controlled drug release, development of implants, stent innovation, enhancement of blood compatibility, acceleration of wound healing, and pioneering strides in tissue engineering. This comprehensive overview delves into a multitude of developed heparin conjugates, employing various methods, and explores their functions in both the biomedicine and electronics fields. The efficacy of materials derived from heparin is also thoroughly investigated, encompassing considerations such as thrombogenicity, drug release kinetics, affinity for growth factors (GFs), biocompatibility, and electrochemical analyses. We firmly believe that by redirecting focus towards research and advancements in heparin-related polymers/hydrogels, this study will ignite further research and accelerate potential breakthroughs in this promising and evolving field of discovery.
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Affiliation(s)
- Sonali Gupta
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India
| | - Yashoda Malgar Puttaiahgowda
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka 576104, India.
| | - Lisa Deiglmayr
- Department of Chemistry, University of Munich (LMU), Butenandtstraβe 5-13, (D), 81377 Munich, Germany
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Horgos MS, Pop OL, Sandor M, Borza IL, Negrean RA, Cote A, Neamtu AA, Grierosu C, Sachelarie L, Huniadi A. Platelets Rich Plasma (PRP) Procedure in the Healing of Atonic Wounds. J Clin Med 2023; 12:3890. [PMID: 37373585 DOI: 10.3390/jcm12123890] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 05/31/2023] [Accepted: 06/05/2023] [Indexed: 06/29/2023] Open
Abstract
(1) Background: Patients suffering from chronic wounds report physical, mental, and social consequences due to their existence and care. There is a global need for tissue repair strategies and, in our case, for chronic wound healing. PRP therapy is based on the fact that platelet-derived growth factors (PGF) support the three phases of the wound healing and repair cascade (inflammation, proliferation, and remodeling); (2) Methods: A comparative study was carried out on two groups of patients with atonic wounds totaling a total of 80 cases as follows: a study group in which the PRP procedure was applied and a control group in which the biological product was not injected. The study was carried out in the surgery clinic of the Clinical Hospital C.F. Oradea City; (3) Results: A much faster healing was achieved in the case of patients who benefited from the platelet-rich plasma injection therapy compared to the group of patients in whom this therapy was not used. Three weeks after the plasma injection, a considerable reduction of the wound was evident, with some of the patients presenting with a closed wound; (4) Conclusions: The effect of PRP on the healing of chronic wounds is promising in most cases. A positive effect was also highlighted in terms of reducing treatment costs by considerably reducing the materials used as well as the number of hospitalizations for the same pathology.
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Affiliation(s)
- Maur Sebastian Horgos
- Department of Surgical Disciplines, Faculty of Medicine and Pharmacy, University of Oradea, 1st December Square No. 10, 410073 Oradea, Romania
| | - Ovidiu Laurean Pop
- Department of Pathology, County Clinical Emergency Hospital, Faculty of Medicine and Pharmacy, University of Oradea, 1st December Square No. 10, 410087 Oradea, Romania
| | - Mircea Sandor
- Department of Surgical Disciplines, Faculty of Medicine and Pharmacy, University of Oradea, 1st December Square No. 10, 410073 Oradea, Romania
| | - Ioan Lucian Borza
- Department of Morphological Disciplines, Faculty of Medicine and Pharmacy, University of Oradea, 1st December Square No. 10, 410073 Oradea, Romania
| | - Rodica Anamaria Negrean
- Department of Preclinical Disciplines, Faculty of Medicine and Pharmacy, University of Oradea, 1st December Square No. 10, 410073 Oradea, Romania
| | - Adrian Cote
- Department of Surgical Disciplines, Faculty of Medicine and Pharmacy, University of Oradea, 1st December Square No. 10, 410073 Oradea, Romania
| | - Andreea-Adriana Neamtu
- Department of Surgical Disciplines, Developmental Biology Biochemistry & Molecular Biology Area Studies Chemistry Communication, Faculty of Medicine and Pharmacy & Dental Medicine, Vasile Goldis Western University, 310045 Arad, Romania
| | - Carmen Grierosu
- Department of Preclinical Disciplines, Faculty of Medicine, Apollonia University, Păcurari Street 11, 700511 Iași, Romania
| | - Liliana Sachelarie
- Department of Preclinical Disciplines, Faculty of Medicine, Apollonia University, Păcurari Street 11, 700511 Iași, Romania
| | - Anca Huniadi
- Department of Surgical Disciplines, Faculty of Medicine and Pharmacy, University of Oradea, 1st December Square No. 10, 410073 Oradea, Romania
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Hardy M, Feehan L, Savvides G, Wong J. How controlled motion alters the biophysical properties of musculoskeletal tissue architecture. J Hand Ther 2023; 36:269-279. [PMID: 37029054 DOI: 10.1016/j.jht.2022.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Accepted: 12/06/2022] [Indexed: 04/09/2023]
Abstract
INTRODUCTION Movement is fundamental to the normal behaviour of the hand, not only for day-to-day activity, but also for fundamental processes like development, tissue homeostasis and repair. Controlled motion is a concept that hand therapists apply to their patients daily for functional gains, yet the scientific understanding of how this works is poorly understood. PURPOSE OF THE ARTICLE To review the biology of the tissues in the hand that respond to movement and provide a basic science understanding of how it can be manipulated to facilitate better functionThe review outlines the concept of controlled motion and actions across the scales of tissue architecture, highlighting the the role of movement forces in tissue development, homeostasis and repair. The biophysical behaviour of mechanosensitve tissues of the hand such as skin, tendon, bone and cartilage are discussed. CONCLUSION Controlled motion during early healing is a form of controlled stress and can be harnessed to generate appropriate reparative tissues. Understanding the temporal and spatial biology of tissue repair allows therapists to tailor therapies that allow optimal recovery based around progressive biophysical stimuli by movement.
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Affiliation(s)
- Maureen Hardy
- Past Director Rehab Services and Hand Management Center, St. Dominic Hospital, Jackson, MS, USA
| | - Lynne Feehan
- Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Georgia Savvides
- Blond McIndoe Laboratories, Division of Cell Matrix Biology and Regenerative Medicine, Manchester Academic Health Science Centre, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Jason Wong
- Blond McIndoe Laboratories, Division of Cell Matrix Biology and Regenerative Medicine, Manchester Academic Health Science Centre, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom.
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Cogo A, Bignozzi AC, Hermans MHE, Quint BJ, Snels JP, Schultz G. A desiccation compound as a biofilm- and necrosis-removing agent: a case series. J Wound Care 2022; 31:816-822. [DOI: 10.12968/jowc.2022.31.10.816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Objective: A new compound, Debrichem (DEBx Medical BV, the Netherlands), a topical desiccation agent (TDA), is an active gel that contains an acidic species with a potent hygroscopic action. When in contact with microorganisms and necrosis, rapid desiccation and carbonisation of the proteins in these microorganisms, as well as of the extracellular matrix of biofilms and necrosis, occurs. The resulting ‘precipitate’ rapidly dislodges from the wound bed, resulting in a clean wound which granulates, which is a prerequisite for healing by secondary intention. Method: In a retrospective study, a series of mostly large and hard-to-heal lesions of different aetiologies were treated with a one-time application of the TDA, followed by weekly dressing changes. Results: Of the total of 54 lesions included in this case series, 22 were diagnosed as venous leg ulcers (VLUs), 20 as diabetic foot ulcers (DFUs), nine as post-traumatic, hard-to-heal lesions, two as vascular ulcers and one as an ischaemic ulcer. All of the VLUs, 75% of the DFUs and all of the other lesions reached complete granulation. Conclusion: The use of a TDA may contribute to the consistent, fast and easy removal of both biofilms and necrosis, and hence to wound healing.
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Angelou V, Psalla D, Dovas CI, Kazakos GM, Marouda C, Chatzimisios K, Kyrana Z, Moutou E, Karayannopoulou M, Papazoglou LG. Locally Injected Autologous Platelet-Rich Plasma Improves Cutaneous Wound Healing in Cats. Animals (Basel) 2022; 12:ani12151993. [PMID: 35953982 PMCID: PMC9367528 DOI: 10.3390/ani12151993] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 08/03/2022] [Accepted: 08/04/2022] [Indexed: 11/16/2022] Open
Abstract
Cutaneous defects in cats are commonly encountered in clinical practice, and healing can be accomplished by first or second intention. Platelet-rich plasma (PRP) is characterized by a plasma concentration containing a large number of platelets in a small volume of plasma. The objective of the present study was to record the efficacy of PRP infiltration in open wounds in laboratory cats. Six wounds were created in the dorsal midline of eight laboratory cats, with the wounds of one side designated as the PRP group and the wounds of the other side as the control group. Wound healing was evaluated by daily clinical examination, planimetry, laser Doppler flowmetry, and histologic examination on days 0, 7, 14, and 25, and by measurement of metalloproteinases (MMPs)-2 and -9 and tissue inhibitor metalloproteinase (TIMP)-1 on days 0, 14, and 25. Based on the results of the present study, the mean time for full coverage with granulation tissue was shorter in the PRP group, the mean contraction and total wound healing percentage were increased compared to the control group, and finally, the perfusion measured with laser Doppler flowmetry was higher in the PRP group during all examination days. In conclusion, this is the first study focusing on the topical application of PRP in the treatment of open wounds in laboratory cats, and our results are encouraging—showing a more rapid healing in the PRP group.
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Affiliation(s)
- Vasileia Angelou
- Unit of Surgery and Obstetrics, Companion Animal Clinic, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54627 Thessaloniki, Greece
- Correspondence: ; Tel.:+231-0994408
| | - Dimitra Psalla
- Laboratory of Pathology, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Chrysostomos I. Dovas
- Diagnostic Laboratory, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 11 S. Voutyra Str., 54627 Thessaloniki, Greece
| | - George M. Kazakos
- Unit of Anaesthesiology and Intensive Care, Companion Animal Clinic, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54627 Thessaloniki, Greece
| | - Christina Marouda
- Laboratory of Pathology, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Kyriakos Chatzimisios
- Unit of Surgery and Obstetrics, Companion Animal Clinic, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54627 Thessaloniki, Greece
| | - Zacharenia Kyrana
- Laboratory of Agronomy, School of Agriculture, Faculty of Agriculture, Forestry and Natural Environment, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Evangelia Moutou
- Diagnostic Laboratory, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 11 S. Voutyra Str., 54627 Thessaloniki, Greece
| | - Maria Karayannopoulou
- Unit of Surgery and Obstetrics, Companion Animal Clinic, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54627 Thessaloniki, Greece
| | - Lysimachos G. Papazoglou
- Unit of Surgery and Obstetrics, Companion Animal Clinic, School of Veterinary Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, 54627 Thessaloniki, Greece
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Chen H, Yu Z, Liu N, Huang J, Liang X, Liang X, Liang M, Li M, Ni J. The efficacy of low-frequency ultrasound as an added treatment for chronic wounds: A meta-analysis. Int Wound J 2022; 20:448-457. [PMID: 35855676 PMCID: PMC9885464 DOI: 10.1111/iwj.13893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 06/25/2022] [Accepted: 06/28/2022] [Indexed: 02/03/2023] Open
Abstract
We performed a meta-analysis to evaluate the effect of low-frequency ultrasound as an added treatment for chronic wounds. A systematic literature search up to May 2022 was performed and 838 subjects with chronic wounds at the baseline of the studies; 412 of them were using the low-frequency ultrasound (225 low-frequency high-intensity contact ultrasound for diabetic foot wound ulcers, and 187 low-frequency low-intensity non-contact ultrasound for a venous leg wound ulcers), and 426 were using standard care (233 sharp debridements for diabetic foot wound ulcers and 193 sham treatments for venous leg wound ulcers). Odds ratio (OR), and mean difference (MD) with 95% confidence intervals (CIs) were calculated to assess the effect of low-frequency ultrasound as an added treatment for chronic wounds using the dichotomous, and contentious methods with a random or fixed-effect model. The low-frequency high-intensity contact ultrasound for diabetic foot wound ulcers had significantly lower non-healed diabetic foot wound ulcers at ≥3 months (OR, 0.37; 95% CI, 0.24-0.56, P < .001), a higher percentage of diabetic foot wound ulcers area reduction (MD, 17.18; 95% CI, 6.62-27.85, P = .002) compared with sharp debridement for diabetic foot wound ulcers. The low-frequency low-intensity non-contact ultrasound for a venous leg wound ulcers had a significantly lower non-healed venous leg wound ulcers at ≥3 months (OR, 0.31; 95% CI, 0.15-0.62, P = .001), and higher percentage venous leg wound ulcers area reduction (MD, 18.96; 95% CI, 2.36-35.57, P = .03) compared with sham treatments for a venous leg wound ulcers. The low-frequency ultrasound as an added treatment for diabetic foot wound ulcers and venous leg wound ulcers had significantly lower non-healed chronic wound ulcers at ≥3 months, a higher percentage of chronic wound ulcers area reduction compared with standard care. The analysis of outcomes should be with caution because of the low sample size of all the 17 studies in the meta-analysis and a low number of studies in certain comparisons.
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Affiliation(s)
- Haiting Chen
- Department of Emergency Medical CenterAffiliated Hospital of Guangdong Medical UniversityGuangdongChina
| | - Zhenxing Yu
- Department of Pulmonary and Critical Care Medicine, Wuhan Jinyintan HospitalTongji Medical College of Huazhong University of Science and Technology; Hubei Clinical Research Center for Infectious Diseases; Wuhan Research Center for Communicable Disease Diagnosis and Treatment, Chinese Academy of Medical Sciences; Joint Laboratory of Infectious Diseases and Health, Wuhan Institute of Virology and Wuhan Jinyintan Hospital, Chinese Academy of SciencesHubeiChina
| | - Ning Liu
- Department of Ultrasonic Imagingthe Fifth Hospital of WuhanHubeiChina
| | - Jianbin Huang
- Department of Ultrasonic Imagingthe Fifth Hospital of WuhanHubeiChina
| | - Xia Liang
- Department of Nursing DepartmentAffiliated Hospital of Guangdong Medical UniversityGuangdongChina
| | - Xiaoling Liang
- Department of Nursing DepartmentAffiliated Hospital of Guangdong Medical UniversityGuangdongChina
| | - Meixia Liang
- Department of Gastrointestinal SurgeryAffiliated Hospital of Guangdong Medical UniversityGuangdongChina
| | - Minghui Li
- Department of Orthopaedicsthe Fifth Hospital of WuhanHubeiChina
| | - Jiang Ni
- Department of Pharmacythe Fifth Hospital of WuhanHubeiChina
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7
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Zhang Q, Zhang C, Feng L, Wang L, Qi J, Dong Y, Zhou YL, Hu K, Zhang Y. Effects of nanoparticle-mediated Co-delivery of bFGF and VEGFA genes to deep burn wounds: An in vivo study. Colloids Surf B Biointerfaces 2021; 209:112135. [PMID: 34655915 DOI: 10.1016/j.colsurfb.2021.112135] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 09/16/2021] [Accepted: 09/22/2021] [Indexed: 01/04/2023]
Abstract
Deep burns are a common form of trauma worldwide, and they are hard to be cured in a short time and enhance psychological pressure of the patients. How to effectively promote the healing of wounds after burns is a continuing challenge currently faced by burn physicians. Various strategies of promoting wound healing of deep burns have been developed, including gene therapy and growth factor therapy. In this study, we developed a combined therapy using PLGA nanoparticles as carriers to deliver bFGF and VEGFA genes to promote healing of burn wounds. We first inserted the bFGF and VEGFA genes into pEGFP-N1 vectors and loaded the mixed generated plasmids into PLGA nanoparticles. Next, we injected the nanoparticle/plasmid complexes into the rats intracutaneously and found that the complexes were successfully transfected in vivo one week later. Finally, we injected the nanoparticle/plasmid complexes containing bFGF and VEGFA around burn wounds. We found that the percentage of wound healing of rats treated with nanoparticles/bFGF+ VEGFA plasmid complexes was higher than that of rats in the scald control group, and the early percentage of wound complete epithelialization was also higher. Therefore, combining gene therapy with nanoparticles may be an effective biological strategy for wound repair.
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Affiliation(s)
- Qingrong Zhang
- Department of Burn and Plastic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, People's Republic of China
| | - Chuwei Zhang
- Nantong University Xinglin College, Nantong 226001, People's Republic of China
| | - Liang Feng
- Department of Burn and Plastic Surgery, Nantong Third People's Hospital, Nantong University, Nantong 226001, People's Republic of China
| | - Lei Wang
- Department of Burn and Plastic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, People's Republic of China
| | - Jun Qi
- Department of Burn and Plastic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, People's Republic of China
| | - Yipeng Dong
- Nantong University, Nantong 226001, People's Republic of China
| | - You Lang Zhou
- The Hand Surgery Research Center, Department of Hand Surgery, Affiliated Hospital of Nantong University, Nantong 226001, People's Republic of China.
| | - Kesu Hu
- Department of Burn and Plastic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, People's Republic of China.
| | - Yi Zhang
- Department of Burn and Plastic Surgery, Affiliated Hospital of Nantong University, Nantong 226001, People's Republic of China.
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Wu J, Zhu J, Wu Q, An Y, Wang K, Xuan T, Zhang J, Song W, He H, Song L, Zheng J, Xiao J. Mussel-Inspired Surface Immobilization of Heparin on Magnetic Nanoparticles for Enhanced Wound Repair via Sustained Release of a Growth Factor and M2 Macrophage Polarization. ACS APPLIED MATERIALS & INTERFACES 2021; 13:2230-2244. [PMID: 33403850 DOI: 10.1021/acsami.0c18388] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Efficient reconstruction of a fully functional skin after wounds requires multiple functionalities of wound dressing due to the complexity of healing. In these regards, topical administration of functionalized nanoparticles capable of sustainably releasing bioactive agents to the wound site may significantly accelerate wound repair. Among the various nanoparticles, superparamagnetic iron oxide (Fe3O4) nanoparticles gain increasing attractiveness due to their intrinsic response to an external magnetic field (eMF). Herein, based on the Fe3O4 nanoparticle, we developed a fibroblast growth factor (bFGF)-loaded Fe3O4 nanoparticle using a simple mussel-inspired surface immobilization method. This nanoparticle, named as bFGF-HDC@Fe3O4, could stabilize bFGF in various conditions and exhibited sustained release of bFGF. In addition, an in vitro study discovered that bFGF-HDC@Fe3O4 could promote macrophage polarization toward an anti-inflammatory (pro-healing) M2 phenotype especially under eMF. Further, in vivo full-thickness wound animal models demonstrated that bFGF-HDC@Fe3O4 could significantly accelerate wound healing through M2 macrophage polarization and increased cell proliferation. Therefore, this approach of realizing sustained the release of the growth factor with magnetically macrophage regulating behavior through modification of Fe3O4 nanoparticles offers promising potential to tissue-regenerative applications.
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Affiliation(s)
- Jiang Wu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P.R. China
| | - Junyi Zhu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
- Taizhou Hospital of Zhejiang Province affiliated to Wenzhou Medical University, Taizhou, Zhejiang 317000, P.R. China
| | - Qiuji Wu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Ying An
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Kangning Wang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Tengxiao Xuan
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Junwen Zhang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P.R. China
| | - Wenxiang Song
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P.R. China
| | - Huacheng He
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, P.R. China
| | - Liwan Song
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
| | - Jie Zheng
- Department of Chemical, Biomolecular, and Corrosion Engineering, The University of Akron, Akron, Ohio 44325, United States
| | - Jian Xiao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, P.R. China
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9
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Lin ET, Lin BS, Tsai LC, Chen WK, Wang YJ, Chiang HM, Chang CC. Functional recovery in human partial thickness skin wounds after application of multicomponent hydrolipidic film (MAS063DP): A prospective, open-label, comparative clinical trial. Wound Repair Regen 2020; 29:87-96. [PMID: 33047411 DOI: 10.1111/wrr.12866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 05/06/2020] [Accepted: 08/13/2020] [Indexed: 11/26/2022]
Abstract
Acute and minor skin wounds are common in daily life. However, in clinical practice, after initial management in the acute phase, the wounds are managed mainly through observation, and the patients are usually lost to follow-up. Considering a multicomponent hydrolipidic dressing (MAS063DP) long-known for its safe application in eczema and recently in laser-induced wounds, we aimed to evaluate its ability in functional recovery of impaired skin integrity during wound healing. Sixteen patients (N = 16) were enrolled and completed (n = 8 vs n = 8) this prospective, open-label, vehicle-controlled clinical trial with 12-week follow-up. Transepidermal water, skin viscoelasticity and bioimpedance analysis were measured initially, at the 1st, 4th, 8th, and 12th weeks. Improvements in these parameters were greater in the MAS063DP group (from 31.4 ± 9.0 to 16.4 ± 4.3 g/m2 h, P < .001; from 77 ± 16% to 88 ± 9%, P < .05; from 4182 ± 3823 to 2644 ± 1772 Ω) than in the white petrolatum group. No significant adverse events occurred, and all participants were more satisfied with the intervention. In this study, MAS063DP can restore skin integrity and reinstitute physiologic function as a feasible and safe intervention more markedly than management through observation during the healing process by providing protective hydrolipidic layer on the skin with simultaneous anti-inflammatory and antioxidant activities from its key ingredients such as glycyrrhetinic acid, Vitis vinifera, telmesteine, and vitamins C and E.
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Affiliation(s)
- Erh-Ti Lin
- Department of Education, China Medical University Hospital, Taichung, Taiwan, Republic of China.,Department of Orthopedics, China Medical University Hospital, Taichung, Taiwan, Republic of China
| | - Bor-Shyh Lin
- Institute of Imaging and Biomedical Photonics, National Chiao Tung University, Tainan, Taiwan, Republic of China
| | - Li-Cheng Tsai
- Department of Education, China Medical University Hospital, Taichung, Taiwan, Republic of China
| | - Wei-Kung Chen
- Department of Emergency, China Medical University Hospital, Taichung, Taiwan, Republic of China
| | - Yen-Jen Wang
- Department of Dermatology, Mackay Memorial Hospital, Taipei, Taiwan, Republic of China
| | - Hsiu-Mei Chiang
- Department of Cosmeceutics and Graduate Institute of Cosmeceutics, China Medical University, Taichung, Taiwan, Republic of China
| | - Chang-Cheng Chang
- Aesthetic Medical Center, China Medical University Hospital, Taichung, Taiwan, Republic of China.,Institute of Imaging and Biomedical Photonics, National Chiao Tung University, Tainan, Taiwan, Republic of China.,Department of Cosmeceutics and Graduate Institute of Cosmeceutics, China Medical University, Taichung, Taiwan, Republic of China
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10
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Chakroborty D, Goswami S, Basu S, Sarkar C. Catecholamines in the regulation of angiogenesis in cutaneous wound healing. FASEB J 2020; 34:14093-14102. [PMID: 32949437 DOI: 10.1096/fj.202001701r] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/04/2020] [Accepted: 08/24/2020] [Indexed: 12/13/2022]
Abstract
Angiogenesis involves the formation of new blood vessels from preexisting ones, and it is an essential step during cutaneous wound healing, which supports cells at the wound site with nutrition and oxygen. Impaired angiogenesis in the wound tissues results in delayed wound closure and healing. Among the regulators of angiogenesis, the role of catecholamines (epinephrine, norepinephrine, and dopamine) is of interest due to their diverse roles in the process of wound healing. While both norepinephrine and epinephrine mostly inhibit the angiogenic process in cutaneous wounds, dopamine, the other member of the catecholamine family, has interesting and contradictory roles in the regulation of angiogenesis in the wound beds, depending on the type of dopamine receptor involved. The stimulation of dopamine D2 receptors negatively regulates the angiogenic process in normal dermal wounds and thereby delays healing, whereas the stimulation of dopamine D1 receptors promotes angiogenesis and expedites healing in diabetic wounds. Importantly, catecholamines also play important roles in other pathological conditions, and specific agonists and antagonists of catecholamines are available for the treatment of some disorders. Therefore, such drugs may be utilized for the management of angiogenesis to promote the healing of dermal wounds. This review provides a broad overview of the angiogenic process during cutaneous wound healing and the regulatory roles played by catecholamines during the process.
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Affiliation(s)
| | - Sandeep Goswami
- Department of Pathology, Ohio State University, Columbus, OH, USA
| | - Sujit Basu
- Department of Pathology, Ohio State University, Columbus, OH, USA.,Comprehensive Cancer Center, Ohio State University, Columbus, OH, USA.,Department of Medical Oncology, Ohio State University, Columbus, OH, USA
| | - Chandrani Sarkar
- Department of Pathology, Ohio State University, Columbus, OH, USA.,Comprehensive Cancer Center, Ohio State University, Columbus, OH, USA
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Lu W, Xu X, Imbernon L, Zhu J, Hoogenboom R, Du Prez FE, Pan X. On-Demand Dissoluble Diselenide-Containing Hydrogel. Biomacromolecules 2020; 21:3308-3317. [PMID: 32658477 DOI: 10.1021/acs.biomac.0c00762] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
On-demand dissolution of hydrogels is being increasingly studied for their potential use in burn wound dressing applications. Herein, a dynamic diselenide-containing hydrogel is developed through a very simple one-pot and two-step process starting from the selenol functionalization of a partially hydrolyzed poly(2-ethyl-2-oxazoline) with γ-butyroselenolactone. The hydrogel spontaneously cross-links via an in situ oxidation of the selenol functionalities in air. The gelation process and the final viscoelastic properties of the gel are characterized by rheological experiments. The mechanical properties of those new diselenide-containing hydrogels are easily tuned by varying the concentration of γ-butyroselenolactone. The materials also show good skin adhesion and UV light responsiveness. A unique feature of the hydrogel is its capability to be fully and rapidly dissolved on-demand, via oxidation or reduction of the diselenide cross-links, making them particularly attractive for burn wound dressing applications.
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12
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Scientific and Clinical Abstracts From WOCNext 2020 Reimagined. J Wound Ostomy Continence Nurs 2020. [DOI: 10.1097/won.0000000000000650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Evaluation of an Electro-Pneumatic Device for Artificial Capillary Pulse Generation used in a Prospective Study in Animals for Surgical Neck Wound Healing. Sci Rep 2019; 9:9837. [PMID: 31285533 PMCID: PMC6614409 DOI: 10.1038/s41598-019-46397-0] [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: 06/19/2018] [Accepted: 06/25/2019] [Indexed: 11/25/2022] Open
Abstract
The paper examines the development and testing of an electro-pneumatic device for wound healing therapy after surgery in the neck area. The device generates air pressure values in a miniaturized cuff using electronic circuitry to drive an electro-valve and air compressor. The device works in two distinct modes: continuous pressure mode and pulsating pressure mode. The pressure value setting can vary from 3 to 11 mmHg, and the pulsating pressure mode’s operating frequency range is approximately 0.1 to 0.3 Hz. Laboratory measurements were conducted to evaluate the device’s correct functioning in both continuous and pulsating pressure modes. A four-day prospective study with animals (n = 10) was also conducted to evaluate neck wound healing therapy using the electro-pneumatic device. Out of the twelve histological parameters analysed to reveal the differences between the experimental and control wounds, only one demonstrated a significant difference. Out of the ten animals treated with the device, three showed a significant difference in terms of benefit after therapy. We can therefore conclude that the device potentially improves the wound healing process in the neck area if the pre-set air pressure value does not exceed 8 mmHg.
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Messa CA, Chatman BC, Rhemtulla IA, Broach RB, Mauch JT, D'Angelantonio AM, Fischer JP. Ultrasonic debridement management of lower extremity wounds: retrospective analysis of clinical outcomes and cost. J Wound Care 2019; 28:S30-S40. [DOI: 10.12968/jowc.2019.28.sup5.s30] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Objective:The aim of this study was to assess wound healing outcomes following direct, low-frequency, high-intensity, ultrasonic debridement as a surgical adjunct for non-healing lower extremity wounds.Methods:A retrospective review was conducted for patients undergoing lower extremity wound treatment with direct, low-frequency (22.5 kHz), high-intensity (~60 W/cm2) ultrasonic debridement between January 2010 and January 2016. Clinical outcomes were assessed up to 180-days post-ultrasonic debridement. Descriptive statistics, cost and univariate analysis were performed.Results:Overall, 82 wounds in 51 patients were included. Mean age was 57.0 years (range: 32–69), and average body mass index (BMI) was 30.8 kg/m². Patient comorbidities consisted of smoking (47%; n=24), hypertension (75%; n=38), diabetes (45%; n=23), and peripheral vascular disease (51%, n=26). Average wound age at initial presentation was 1013 days (range: 2–5475 days) with an average wound size of 9.0cm x 7.4cm. At 180-days post-debridement, 60% (n=49) of wounds had completely healed. Readmission (47%; n=24) and reoperation (45%; n=23) rates were characterised by the reason for readmission and reoperation respectively. Readmission for wound healing (70%, n=39) was primarily for further debridements (41%; n=16). Wound infection (30%; n=7) was the most common readmission for wound complications (30%; n=17). Reoperations primarily consisted of treatments for further wound healing 96% (n=51). Cost analysis showed a lower total treatment cost for patients with improved healing ($78,698), compared with non-improved wounds ($137,707).Conclusion:In a complex, heterogeneous cohort of chronic extremity wounds, the use of direct, low-frequency, high-intensity, ultrasonic debridement is a safe and reliable adjunctive therapy for the management of these wounds.
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Affiliation(s)
- Charles A Messa
- Divison of Plastic and Reconstructive Surgery, Department of Surgery, University of Pennsylvania Health System, Philadelphia, PA, US
| | - Brett C Chatman
- Divison of Plastic and Reconstructive Surgery, Department of Surgery, University of Pennsylvania Health System, Philadelphia, PA, US
| | - Irfan A Rhemtulla
- Divison of Plastic and Reconstructive Surgery, Department of Surgery, University of Pennsylvania Health System, Philadelphia, PA, US
| | - Robyn B Broach
- Divison of Plastic and Reconstructive Surgery, Department of Surgery, University of Pennsylvania Health System, Philadelphia, PA, US
| | - Jaclyn T Mauch
- Divison of Plastic and Reconstructive Surgery, Department of Surgery, University of Pennsylvania Health System, Philadelphia, PA, US
| | - Albert M D'Angelantonio
- Divison of Plastic and Reconstructive Surgery, Department of Surgery, University of Pennsylvania Health System, Philadelphia, PA, US
| | - John P Fischer
- Divison of Plastic and Reconstructive Surgery, Department of Surgery, University of Pennsylvania Health System, Philadelphia, PA, US
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Use of Silver-Containing Hydrofiber and Chlorhexidine-Impregnated Tulle Gras Dressings for Second-Degree Burns. Adv Skin Wound Care 2019; 32:1-5. [PMID: 31008744 DOI: 10.1097/01.asw.0000553598.12820.e7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE This study evaluated the use of silver-containing hydrofiber and chlorhexidine-impregnated tulle gras dressings for second-degree burns. METHODS This randomized clinical study consisted of 60 patients with second-degree burns. Data were collected using a Patient Identification Form, Wound Assessment Form, and Pain Assessment Scale. Following dressing application, wounds were assessed on days 7, 15, and 22. Study procedures were continued until full epithelialization occurred. RESULTS After the seventh day of follow-up, significant improvement was noted in the experimental group in terms of wound exudate, wound debridement, pain intensity, and analgesic agent administration. After the 15th day of follow-up, there was a significant decrease in epithelialization time in the experimental group. Exudate control was better in patients whose burns were treated with silver-containing hydrofiber dressings, and they needed less debridement and fewer analgesics because of infrequent dressing changes. Lower pain scores were reported, the burn area reduced more quickly, and faster epithelialization and wound healing were achieved. CONCLUSIONS The authors conclude that silver-containing hydrofiber dressings are an effective wound care material that improve the wound healing process. More studies comparing it and other wound care materials could improve the quality of healthcare for patients with burns.
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Movassaghi S, Nadia Sharifi Z, Koosha M, Abdollahifar MA, Fathollahipour S, Tavakoli J, Abdi S. Effect of Honey/PVA Hydrogel Loaded by Erythromycin on Full-Thickness Skin Wound Healing in Rats; Stereological Study. Galen Med J 2019; 8:e1362. [PMID: 34466500 PMCID: PMC8343615 DOI: 10.31661/gmj.v0i0.1362] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 10/17/2018] [Accepted: 11/18/2018] [Indexed: 12/18/2022] Open
Abstract
Background: Skin wounds are a significant public health risk, and treatment of wound remains a challenging clinical problem for medical teams and researchers. Materials and Methods: In the present study, we aimed to investigate the healing effects of honey/polyvinyl alcohol (PVA) hydrogel loaded with erythromycin as wound dressing on skin wounds in rats, based on histological studies. In this study, 60 male Wistar rats, with a 1.5 ×1.5 cm2 diameter full-thickness wounds on the backs were divided into four groups: honey/PVA with the erythromycin hydrogel group, honey group, PVA group, and the control group, with no treatment. Skin biopsies were prepared at days 4, 7, and 14 for microscopic analyses. The stereological analysis, including the mean area of the wound, length of vessels, numerical density of fibroblast, macrophage, basal cell and volume of the epidermis, dermis, and fibrous tissue were performed. Results: Wounds area in the honey/PVA hydrogel with the erythromycin group were significantly (P<0.05) smaller than in the other group. The numerical density of fibroblast, macrophage, basal cell and volume of the epidermis in the honey/PVA hydrogel with the erythromycin group were significantly higher than other groups. Conclusion: According to our results, honey/PVA hydrogel with erythromycin may promote early wound healing and has a positive influence on fibroblast proliferation and re-epithelialization, and its administration is recommended after further validation of clinical data.
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Affiliation(s)
- Shabnam Movassaghi
- Department of Anatomical Sciences & Cognitive Neuroscience, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Zahra Nadia Sharifi
- Department of Anatomical Sciences & Cognitive Neuroscience, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
| | - Mojtaba Koosha
- Department of Cellulose and Paper Technology, Faculty of New Technologies Engineering, Shahid Beheshti University, Zirab Campus, Savadkooh, Mazandaran, Iran
| | - Mohammad Amin Abdollahifar
- Department of Biology and Anatomical Sciences, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Javad Tavakoli
- Mechanical Engineering Biomechanics and Implants Research Group, The Medical Device Research Institute (MDRI), School of Computer Science Engineering and Mathematics, Sir Eric Neal Building, Flinders University, Adelaide, Australia
| | - Shabnam Abdi
- Department of Anatomical Sciences & Cognitive Neuroscience, Faculty of Medicine, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran
- Correspondence to: Dr. Shabnam Abdi, Department of Anatomical Sciences, School of Medicine, Islamic Azad University Tehran Medical Sciences Branch, Tehran, Iran. Telephone Number: +989122370596 Email Address :
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A Framework to Assist Providers in the Management of Patients with Chronic, Nonhealing Wounds. Adv Skin Wound Care 2018; 31:491-501. [DOI: 10.1097/01.asw.0000546117.86938.75] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
This article aims to help the practitioner by providing the tools to decide which type of closure or healing is best in a given situation. An overview of the main criteria and the different approaches to wound closure is presented. Each wound must be considered as a unique problem that requires a clinician to take into account all of its characteristics and limits to determine the best management approach.
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Jildeh TR, Okoroha KR, Marshall NE, Abdul-Hak A, Zeni F, Moutzouros V. Infection and Rerupture After Surgical Repair of Achilles Tendons. Orthop J Sports Med 2018; 6:2325967118774302. [PMID: 29854862 PMCID: PMC5971389 DOI: 10.1177/2325967118774302] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Background: Surgical repair of an Achilles tendon rupture has been shown to decrease rerupture rates. However, surgery also increases the risk of complications, including infection. Purpose: To determine the risk factors for infection and rerupture after primary repair of Achilles tendon ruptures. Study Design: Cohort study; Level of evidence, 3. Methods: A retrospective review was performed on 423 patients who underwent operative treatment of Achilles tendon ruptures between the years 2008 and 2014. The primary outcome of interest was the total rate of infection, and the secondary outcome of interest was the incidence of rerupture within 2 years of operation. Results: A total of 423 patients were analyzed, with a mean age of 46 years (range, 16-83 years) and a mean body mass index of 31.4 kg/m2 (range, 17-55 kg/m2). The overall infection rate was 2.8%, and the rerupture rate was 1%. The median time between surgery and superficial surgical site infection was 30 days, and the median time between surgery and rerupture was 38 days. Longer tourniquet times (100.3 ± 34.7 minutes vs 69.9 ± 21.4 minutes; P = .04) and greater estimated blood loss (15.0 ± 9.1 mL vs 5.1 ± 12.0 mL; P = .01) were associated with an increased rate of deep surgical site infections. Patients who had longer operation and tourniquet times trended toward higher rerupture rates (P = .06 and .08, respectively). When compared with nonsmokers, current and previous smokers had an increased incidence of superficial or deep surgical site infections (6.25% vs 1.42%; P = .02). Age, sex, race, body mass index, alcohol use, diabetes, past steroid injections, and mechanism of injury did not contribute to complication rates. Conclusion: Achilles tendon repairs were associated with a low risk of infection and rerupture. Patients with longer tourniquet times, higher estimated blood loss, and a history of smoking were at increased risk for surgical site infections. Patients with longer operative times had increased rates of rerupture.
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Affiliation(s)
- Toufic R Jildeh
- Department of Orthopaedic Surgery, Henry Ford Health System, Detroit, Michigan, USA
| | - Kelechi R Okoroha
- Department of Orthopaedic Surgery, Henry Ford Health System, Detroit, Michigan, USA
| | - Nathan E Marshall
- Department of Orthopaedic Surgery, Henry Ford Health System, Detroit, Michigan, USA
| | | | - Ferras Zeni
- Department of Orthopaedic Surgery, Henry Ford Health System, Detroit, Michigan, USA
| | - Vasilios Moutzouros
- Department of Orthopaedic Surgery, Henry Ford Health System, Detroit, Michigan, USA
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Mosselhy DA, Granbohm H, Hynönen U, Ge Y, Palva A, Nordström K, Hannula SP. Nanosilver-Silica Composite: Prolonged Antibacterial Effects and Bacterial Interaction Mechanisms for Wound Dressings. NANOMATERIALS (BASEL, SWITZERLAND) 2017; 7:E261. [PMID: 28878170 PMCID: PMC5618372 DOI: 10.3390/nano7090261] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 08/22/2017] [Accepted: 09/03/2017] [Indexed: 12/23/2022]
Abstract
Infected superficial wounds were traditionally controlled by topical antibiotics until the emergence of antibiotic-resistant bacteria. Silver (Ag) is a kernel for alternative antibacterial agents to fight this resistance quandary. The present study demonstrates a method for immobilizing small-sized (~5 nm) silver nanoparticles on silica matrix to form a nanosilver-silica (Ag-SiO₂) composite and shows the prolonged antibacterial effects of the composite in vitro. The composite exhibited a rapid initial Ag release after 24 h and a slower leaching after 48 and 72 h and was effective against both methicillin-resistant Staphylococcus aureus (MRSA) and Escherichia coli ( E . coli ). Ultraviolet (UV)-irradiation was superior to filter-sterilization in retaining the antibacterial effects of the composite, through the higher remaining Ag concentration. A gauze, impregnated with the Ag-SiO₂ composite, showed higher antibacterial effects against MRSA and E . coli than a commercial Ag-containing dressing, indicating a potential for the management and infection control of superficial wounds. Transmission and scanning transmission electron microscope analyses of the composite-treated MRSA revealed an interaction of the released silver ions with the bacterial cytoplasmic constituents, causing ultimately the loss of bacterial membranes. The present results indicate that the Ag-SiO₂ composite, with prolonged antibacterial effects, is a promising candidate for wound dressing applications.
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Affiliation(s)
- Dina A Mosselhy
- Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, 02150 Espoo, Finland.
- Microbiological Unit, Fish Diseases Department, Animal Health Research Institute, Dokki, Giza 12618, Egypt.
| | - Henrika Granbohm
- Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, 02150 Espoo, Finland.
| | - Ulla Hynönen
- Department of Veterinary Biosciences, Division of Veterinary Microbiology and Epidemiology, University of Helsinki, P.O. Box 66, 00014 Helsinki, Finland.
| | - Yanling Ge
- Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, 02150 Espoo, Finland.
| | - Airi Palva
- Department of Veterinary Biosciences, Division of Veterinary Microbiology and Epidemiology, University of Helsinki, P.O. Box 66, 00014 Helsinki, Finland.
| | - Katrina Nordström
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, 02150 Espoo, Finland.
| | - Simo-Pekka Hannula
- Department of Chemistry and Materials Science, School of Chemical Engineering, Aalto University, 02150 Espoo, Finland.
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Schaffzin JK, Simon K, Connelly BL, Mangano FT. Standardizing preoperative preparation to reduce surgical site infections among pediatric neurosurgical patients. J Neurosurg Pediatr 2017; 19:399-406. [PMID: 28128706 DOI: 10.3171/2016.10.peds16287] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Surgical site infections (SSIs) are costly to patients and the health care system. Pediatric neurosurgery SSI risk factors are not well defined. Intraoperative protocols have reduced, but have not eliminated, SSIs. The effect of preoperative intervention is unknown. Using quality improvement methods, a preoperative SSI prevention protocol for pediatric neurosurgical patients was implemented to assess its effect on SSI rate. METHODS Patients who underwent a scheduled neurosurgical procedure between January 2014 and December 2015 were included. Published evidence and provider consensus were used to guide preoperative protocol development. The Model for Improvement was used to test interventions. Intraoperative and postoperative management was not standardized or modified systematically. Staff, family, and overall adherence was measured as all-or-nothing. In addition, SSI rates among eligible procedures were measured before and after protocol implementation. RESULTS Within 4 months, overall protocol adherence increased from 51.3% to a sustained 85.7%. SSI rates decreased from 2.9 per 100 procedures preintervention to 0.62 infections postintervention (p = 0.003). An approximate 79% reduction in SSI risk was identified (risk ratio 0.21, 95% CI 0.08-0.56; p = 0.001). CONCLUSIONS Clinical staff and families successfully collaborated on a standardized preoperative protocol for pediatric neurosurgical patients. Standardization of the preoperative phase of care alone reduced SSI rates. Attention to the preoperative in addition to the intraoperative and postoperative phases of care may lead to further reduction in SSI rates.
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Affiliation(s)
| | | | | | - Francesco T. Mangano
- Division of Pediatric Neurosurgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
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Components and Quality Measures of DIME (Devitalized Tissue, Infection/Inflammation, Moisture Balance, and Edge Preparation) in Wound Care. Adv Skin Wound Care 2017; 29:205-15. [PMID: 27089149 PMCID: PMC4845765 DOI: 10.1097/01.asw.0000482354.01988.b4] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVES: To discuss how patient considerations and the initial wound environment can affect wound treatment and summarize the way in which the initial US Wound Registry measures capture aspects of the DIME (Debridement/devitalized tissue, Infection or inflammation, Moisture balance, and wound Edge preparation/wound depth) principles. DISCUSSION: The treatment of chronic wounds often involves extended hospital stays and long-term outpatient follow-up visits with costly advanced therapeutic interventions. As complex care is required for chronic wounds, treatment guidelines such as DIME have evolved to include consideration of patient-centered concerns and etiology, as well as features of wound bed preparation. The US healthcare system is in the midst of transitioning to a quality-based system. However, as wound care is not yet a recognized specialty, it is poorly represented in the current approved quality-based measures. CONCLUSION: This article helps to identify the practice guidelines that are not currently represented by quality metrics.
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Cutting KF, White RJ, Legerstee R. Evidence and practical wound care – An all-inclusive approach. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.wndm.2017.01.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Peng X, Yu Y, Wang Z, Zhang X, Wang J, Liu C. Potentiation effect of HB-EGF on facilitating wound healing via 2-N,6-O-sulfated chitosan nanoparticles modified PLGA scaffold. RSC Adv 2017. [DOI: 10.1039/c7ra07719j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
26SCS-nanoparticles modified PLGA have synergistic effect with HB-EGF on promoting the migration of keratinocyte, realizing the skin regeneration.
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Affiliation(s)
- Xiang Peng
- Key Laboratory for Ultrafine Materials of Ministry of Education
- East China University of Science and Technology
- Shanghai 200237
- PR China
- Engineering Research Center for Biomedical Materials of Ministry of Education
| | - Yuanman Yu
- Key Laboratory for Ultrafine Materials of Ministry of Education
- East China University of Science and Technology
- Shanghai 200237
- PR China
- Engineering Research Center for Biomedical Materials of Ministry of Education
| | - Zihao Wang
- Key Laboratory for Ultrafine Materials of Ministry of Education
- East China University of Science and Technology
- Shanghai 200237
- PR China
- Engineering Research Center for Biomedical Materials of Ministry of Education
| | - Xiaohui Zhang
- Engineering Research Center for Biomedical Materials of Ministry of Education
- East China University of Science and Technology
- Shanghai 200237
- PR China
| | - Jing Wang
- Key Laboratory for Ultrafine Materials of Ministry of Education
- East China University of Science and Technology
- Shanghai 200237
- PR China
- Engineering Research Center for Biomedical Materials of Ministry of Education
| | - Changsheng Liu
- Key Laboratory for Ultrafine Materials of Ministry of Education
- East China University of Science and Technology
- Shanghai 200237
- PR China
- Engineering Research Center for Biomedical Materials of Ministry of Education
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Abstract
Within the literature there is an accumulating body of evidence to suggest that psychological stress may have a negative impact on wound healing. This article examines the psychoneuroimmulogy theory associated with stress and acute wound healing with reference to caring for patients with surgical wounds. The evidence reviewed in this article highlights the value of understanding individual patient need for reducing stress pre and post operatively to benefit the healing process.
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Affiliation(s)
- Julie Brown
- Tissue Viability Nurse, Oxford University Hospitals NHS Foundation Trust
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26
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Mickelson MA, Mans C, Colopy SA. Principles of Wound Management and Wound Healing in Exotic Pets. Vet Clin North Am Exot Anim Pract 2016; 19:33-53. [PMID: 26611923 DOI: 10.1016/j.cvex.2015.08.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The care of wounds in exotic animal species can be a challenging endeavor. Special considerations must be made in regard to the animal's temperament and behavior, unique anatomy and small size, and tendency toward secondary stress-related health problems. It is important to assess the entire patient with adequate systemic evaluation and consideration of proper nutrition and husbandry, which could ultimately affect wound healing. This article summarizes the general phases of wound healing, factors that affect healing, and principles of wound management. Emphasis is placed on novel methods of treating wounds and species differences in wound management and healing.
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Affiliation(s)
- Megan A Mickelson
- Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, 2015 Linden Drive, Madison, WI 53706, USA
| | - Christoph Mans
- Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, 2015 Linden Drive, Madison, WI 53706, USA
| | - Sara A Colopy
- Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, 2015 Linden Drive, Madison, WI 53706, USA.
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Wu J, Zhu J, He C, Xiao Z, Ye J, Li Y, Chen A, Zhang H, Li X, Lin L, Zhao Y, Zheng J, Xiao J. Comparative Study of Heparin-Poloxamer Hydrogel Modified bFGF and aFGF for in Vivo Wound Healing Efficiency. ACS APPLIED MATERIALS & INTERFACES 2016; 8:18710-18721. [PMID: 27384134 DOI: 10.1021/acsami.6b06047] [Citation(s) in RCA: 113] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Wound therapy remains a clinical challenge. Incorporation of growth factors (GFs) into heparin-functionalized polymer hydrogel is considered as a promising strategy to improve wound healing efficiency. However, different GFs incorporation into the same heparin-based hydrogels often lead to different wound healing effects, and the underlying GF-induced wound healing mechanisms still remain elusive. Herein, we developed a thermos-sensitive heparin-poloxamer (HP) hydrogel to load and deliver different GFs (aFGF and bFGF) for wound healing in vivo. The resulting GFs-based hydrogels with and without HP hydrogels were systematically evaluated and compared for their wound healing efficiency by extensive in vivo tests, including wound closure rate, granulation formation, re-epithelization, cell proliferation, collagen, and angiogenesis expressions. While all GFs-based dressings with and without HP hydrogels exhibited better wound healing efficacy than controls, both HP-aFGF and HP-bFGF hydrogels demonstrated their superior healing activity to improve wound closure, granulation formation, re-epithelization, and blood vessel density by up-regulation of PCNA proliferation and collagen synthesis, as compared to GF dressings alone. More importantly, HP-aFGF dressings exhibited the higher healing efficacy than HP-bFGF dressings, indicating that different a/bFGF surface properties lead to different binding and release behaviors in HP hydrogels, both of which will affect different wound healing efficiency. On the basis of experimental observations, the working mechanisms of different healing effects of HP-GFs on full skin removal wound were proposed. This work provides different views of the design and development of an effective hydrogel-based delivery system for GFs toward rapid wound healing.
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Affiliation(s)
- Jiang Wu
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University , Wenzhou, Zhejiang 325035, China
| | - Jingjing Zhu
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University , Wenzhou, Zhejiang 325035, China
| | - Chaochao He
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University , Wenzhou, Zhejiang 325035, China
| | - Zecong Xiao
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University , Wenzhou, Zhejiang 325035, China
| | - Jingjing Ye
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University , Wenzhou, Zhejiang 325035, China
| | - Yi Li
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University , Wenzhou, Zhejiang 325035, China
| | - Anqi Chen
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University , Wenzhou, Zhejiang 325035, China
| | - Hongyu Zhang
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University , Wenzhou, Zhejiang 325035, China
| | - Xiaokun Li
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University , Wenzhou, Zhejiang 325035, China
| | - Li Lin
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University , Wenzhou, Zhejiang 325035, China
| | - Yingzheng Zhao
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University , Wenzhou, Zhejiang 325035, China
| | - Jie Zheng
- Department of Chemical and Biomolecular Engineering, The University of Akron , Akron, Ohio 44325, United States
| | - Jian Xiao
- School of Pharmaceutical Sciences, Key Laboratory of Biotechnology and Pharmaceutical Engineering, Wenzhou Medical University , Wenzhou, Zhejiang 325035, China
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Functional outcome and general health status after treatment of AO type 43 distal tibial fractures. Injury 2016; 47:1519-24. [PMID: 27129909 DOI: 10.1016/j.injury.2016.04.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Revised: 03/24/2016] [Accepted: 04/11/2016] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Distal tibial fractures are uncommon, but they result in poor overall outcome. The objective of this study was to assess functional outcome and general health status after the treatment of distal tibial fractures and identify factors that affect these outcome measures. PATIENTS AND METHODS A retrospective cohort study including 118 AO type 43 distal tibial fractures in 116 patients was conducted. With regard to articular involvement, fractures were classified as either simple (A1-B2, n=70) or complex (B3-C3, n=48). Twenty relevant demographic and operative variables were studied. Functional outcome, quality of life and pain were assessed using the Foot Function Index (FFI) and AOFAS ankle score, physical and mental SF-36, and Visual Analog Scale (VAS) questionnaires, respectively. RESULTS Over 75% of patients experienced noteworthy loss of ankle function. The general health status assessment showed markedly affected quality of life with more than two-third of all responding patients suffering from pain every day. In fact, complex fractures and increased complication rate were associated with worse functional outcome, whereas prolonged time to definite surgery affected both functional outcome and general health status significantly. CONCLUSIONS Complex distal tibial fractures were associated with poor functional outcome scores and delayed (-staged) surgery has been shown to prevent postoperative soft tissue problems. However, soft tissue injury associated with distal tibial fractures itself affected both the postoperative functional outcome and general health status as well. This should contribute to the understanding of treatment and outcome of distal tibial fractures. LEVEL OF EVIDENCE 3.
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Mulisa E, Asres K, Engidawork E. Evaluation of wound healing and anti-inflammatory activity of the rhizomes of Rumex abyssinicus J. (Polygonaceae) in mice. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 15:341. [PMID: 26423525 PMCID: PMC4589968 DOI: 10.1186/s12906-015-0878-y] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 09/25/2015] [Indexed: 11/10/2022]
Abstract
Background Rumex abyssinicus Jacq (Polygonaceae) is widely used in Ethiopia for treatment of wound and other diseases. Although reports are available in the literature on some of the claimed activities, nothing has so far been reported about the wound healing activity of R. abyssinicus. Thus, this work was initiated to investigate the wound healing and anti-inflammatory activities of 80 % methanol extract of the rhizomes of R. abyssinicus in mice. Methods Following extraction of the rhizomes of the plant with 80 % methanol, the extract was formulated as ointment (5 % & 10 % w/w) with simple ointment base B.P. The ointment was then evaluated for wound healing activity using excision and incision wound models. Parameters, including wound contraction, epithelization time and hydroxyproline content were determined using the excision model, whereas tensile strength was measured from the incision model. In parallel, anti-inflammatory activity of the rhizome was evaluated with carrageenan induced hind paw edema model by dissolving the 80 % methanol extract in 1 % carboxyl methyl cellulose and administering orally in various doses (250, 500 and 750 mg/kg). Results Wound treated with 5 % and 10 % (w/w) hydroalcoholic extract ointment exhibited significant wound healing activity in both models, as evidenced by increased wound contraction, shorter epithelization time, higher tissue breaking strength and increased hydroxyproline content. The hydroalcoholic extract also produced dose-related significant reduction (p < 0.05–0.001) of inflammation. Conclusions The results of this study demonstrated that the hydroalcoholic extract of the rhizomes of R. abyssinicus facilitated wound healing at least in part via its anti-inflammatory activity, supporting its traditional claim as a wound healing agent.
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Abstract
Innovation in medicine requires unique partnerships between academic research, biotech or pharmaceutical companies, and health-care providers. While innovation in medicine has greatly increased over the past 100 years, innovation in wound care has been slow, despite the fact that chronic wounds are a global health challenge where there is a need for technical, process and social innovation. While novel partnerships between research and the health-care system have been created, we still have much to learn about wound care and the wound-healing processes.
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Affiliation(s)
- Keith Harding
- Dean of Clinical Innovation, Head of Wound Healing Research Unit (WHRU), School of Medicine, Cardiff University, Cardiff, UK
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Arenberger P, Elg F, Petyt J, Cutting K. Expected outcomes from topical haemoglobin spray in non-healing and worsening venous leg ulcers. J Wound Care 2015; 24:228, 230-2, 236. [PMID: 25970759 DOI: 10.12968/jowc.2015.24.5.228] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVE To evaluate the effect of topical haemoglobin spray on treatment response and wound-closure rates in patients with chronic venous leg ulcers. METHOD A linear regression model was used to forecast healing outcomes over a 12-month period. Simulated data were taken from normal distributions based on post-hoc analysis of a 72-patient study in non-healing and worsening wounds (36 patients receiving standard care and 36 receiving standard care plus topical haemoglobin spray). Using a simulated 25,000 'patients' from each group, the proportion of wound closure over time was projected. RESULTS Simulation results predicted a 55% wound closure rate at six months in the haemoglobin group, compared with 4% in the standard care group. Over a 12-month simulation period, a 43% overall reduction in wound burden was predicted. With the haemoglobin spray, 85% of wounds were expected to heal in 12 months, compared with 13% in the standard care group. CONCLUSION Topical haemoglobin spray promises a more effective treatment for chronic venous leg ulcers than standard care alone in wounds that are non-healing or worsening. Further research is required to validate these predictions and to identify achievable outcomes in other chronic wound types.
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Affiliation(s)
- P Arenberger
- Department of Dermatovenereology, Charles University Prague, 3rd Medical Faculty
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Hansen LA, Hazenfield KM, Olea-Popelka F, Smeak DD. Distribution, Complications, and Outcome of Footpad Injuries in Pet and Military Working Dogs. J Am Anim Hosp Assoc 2015; 51:222-30. [PMID: 26083442 DOI: 10.5326/jaaha-ms-6193] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This study reports the findings of 120 traumatic pad injuries in pet and military dogs. Most dogs (68%) presented with a laceration to a thoracic limb footpad, and one-third of dogs were middle-aged castrated males. Metacarpal pads were most commonly injured. Short-term complications were noted in 27% of dogs. No long-term complications were identified. No disability from pad injury was present at the completion of healing. Concurrent injuries to adjacent structures were uncommon and did not affect outcome. Dogs with full-thickness pad lacerations were at greater risk for major short-term complications compared to dogs with partial-thickness pad lacerations (odds ratio, 7.27; P = .001). Military working dogs with full-thickness pad lacerations were at greater risk for major short-term complications than pet dogs with a similar injury. When major complications developed in dogs with full-thickness pad injuries, time to final healing was significantly longer (by a median of 12 days). The partial-thickness pad lesions healed uneventfully regardless of whether they were bandaged, surgically repaired, or left to heal by second intention. Suture repair and bandaging of full-thickness lesions could not be shown to either decrease the risk for complications or improve healing. Future work should focus on establishing standards for footpad treatment to reduce complications.
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Affiliation(s)
- Lane A Hansen
- From the Military Working Dog Center Europe, US Army Public Health Command District-Northern Europe, Pulaski Barracks, Rheinland-Pfalz, Germany (L.H.); and Colorado State University, Fort Collins, CO (K.H., F.O-P., D.S.)
| | - Kurt M Hazenfield
- From the Military Working Dog Center Europe, US Army Public Health Command District-Northern Europe, Pulaski Barracks, Rheinland-Pfalz, Germany (L.H.); and Colorado State University, Fort Collins, CO (K.H., F.O-P., D.S.)
| | - Francisco Olea-Popelka
- From the Military Working Dog Center Europe, US Army Public Health Command District-Northern Europe, Pulaski Barracks, Rheinland-Pfalz, Germany (L.H.); and Colorado State University, Fort Collins, CO (K.H., F.O-P., D.S.)
| | - Dan D Smeak
- From the Military Working Dog Center Europe, US Army Public Health Command District-Northern Europe, Pulaski Barracks, Rheinland-Pfalz, Germany (L.H.); and Colorado State University, Fort Collins, CO (K.H., F.O-P., D.S.)
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Ubbink DT, Brölmann FE, Go PMNYH, Vermeulen H. Evidence-Based Care of Acute Wounds: A Perspective. Adv Wound Care (New Rochelle) 2015; 4:286-294. [PMID: 26005594 PMCID: PMC4432965 DOI: 10.1089/wound.2014.0592] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 09/19/2014] [Indexed: 11/12/2022] Open
Abstract
Significance: Large variation and many controversies exist regarding the treatment of, and care for, acute wounds, especially regarding wound cleansing, pain relief, dressing choice, patient instructions, and organizational aspects. Recent Advances: A multidisciplinary team developed evidence-based guidelines for the Netherlands using the AGREE-II and GRADE instruments. A working group, consisting of 17 representatives from all professional societies involved in wound care, tackled five controversial issues in acute-wound care, as provided by any caregiver throughout the whole chain of care. Critical Issues: The guidelines contain 38 recommendations, based on best available evidence, additional expert considerations, and patient experiences. In summary, primarily closed wounds need no cleansing; acute open wounds are best cleansed with lukewarm (drinkable) water; apply the WHO pain ladder to choose analgesics against continuous wound pain; use lidocaine or prilocaine infiltration anesthesia for wound manipulations or closure; primarily closed wounds may not require coverage with a dressing; use simple dressings for open wounds; and give your patient clear instructions about how to handle the wound. Future Directions: These evidence-based guidelines on acute wound care may help achieve a more uniform policy to treat acute wounds in all settings and an improved effectiveness and quality of wound care.
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Affiliation(s)
- Dirk T. Ubbink
- Department of Surgery, Academic Medical Center, Amsterdam, The Netherlands
| | - Fleur E. Brölmann
- Department of Surgery, Lucas Andreas Hospital, Amsterdam, The Netherlands
| | | | - Hester Vermeulen
- Department of Surgery, Academic Medical Center, Amsterdam, The Netherlands
- School for Health Professions, Amsterdam, The Netherlands
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PLGA nanoparticles loaded with host defense peptide LL37 promote wound healing. J Control Release 2014; 194:138-47. [PMID: 25173841 DOI: 10.1016/j.jconrel.2014.08.016] [Citation(s) in RCA: 149] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 08/13/2014] [Accepted: 08/14/2014] [Indexed: 11/23/2022]
Abstract
Wound treatment remains one of the most prevalent and economically burdensome healthcare issues in the world. Poly (lactic-co-glycolic acid) (PLGA) supplies lactate that accelerates neovascularization and promotes wound healing. LL37 is an endogenous human host defense peptide that modulates wound healing and angiogenesis and fights infection. Hence, we hypothesized that the administration of LL37 encapsulated in PLGA nanoparticles (PLGA-LL37 NP) promotes wound closure due to the sustained release of both LL37 and lactate. In full thickness excisional wounds, the treatment with PLGA-LL37 NP significantly accelerated wound healing compared to PLGA or LL37 administration alone. PLGA-LL37 NP-treated wounds displayed advanced granulation tissue formation by significant higher collagen deposition, re-epithelialized and neovascularized composition. PLGA-LL37 NP improved angiogenesis, significantly up-regulated IL-6 and VEGFa expression, and modulated the inflammatory wound response. In vitro, PLGA-LL37 NP induced enhanced cell migration but had no effect on the metabolism and proliferation of keratinocytes. It displayed antimicrobial activity on Escherichia coli. In conclusion, we developed a biodegradable drug delivery system that accelerated healing processes due to the combined effects of lactate and LL37 released from the nanoparticles.
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Hakkarainen TW, Kopari NM, Pham TN, Evans HL. Necrotizing soft tissue infections: review and current concepts in treatment, systems of care, and outcomes. Curr Probl Surg 2014; 51:344-62. [PMID: 25069713 DOI: 10.1067/j.cpsurg.2014.06.001] [Citation(s) in RCA: 217] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Accepted: 06/05/2014] [Indexed: 01/17/2023]
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Scientific and Clinical Abstracts From the WOCN® Society's 46th Annual Conference. J Wound Ostomy Continence Nurs 2014. [DOI: 10.1097/won.0000000000000037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hebda PA. The Wound Healing Society celebrates 25 years. Wound Repair Regen 2014; 21:771. [PMID: 24581240 DOI: 10.1111/wrr.12124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Patricia A Hebda
- Editor-in-Chief, Wound Repair and Regeneration Past President of the Wound Healing Society
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Nagoba B, Patil Dawale C, Raju R, Wadher B, Chidrawar S, Selkar S, Suryawanshi N. Citric acid treatment of post operative wound infections in HIV/AIDS patients. J Tissue Viability 2013; 23:24-8. [PMID: 24411100 DOI: 10.1016/j.jtv.2013.12.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 12/06/2013] [Accepted: 12/17/2013] [Indexed: 01/27/2023]
Abstract
The normal cellular immunity is required for normal wound healing. The HIV infection affects wound healing adversely. Wound infections in HIV/AIDS patients are difficult to manage because of compromised immunity. The result is delayed wound healing and increased susceptibility to wound infection. Here we report two cases of HIV positive patients who had developed the post operative wound gape, not responding to the conventional treatment, treated simply by local application of three percent citric acid ointment.
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Affiliation(s)
| | | | | | - Bharat Wadher
- Medical Microbiology Research Lab, P.G. Dept. of Microbiology, R.T.M. Nagpur University, Nagpur, India
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Mirastschijski U, Martin A, Jorgensen LN, Sampson B, Ågren MS. Zinc, copper, and selenium tissue levels and their relation to subcutaneous abscess, minor surgery, and wound healing in humans. Biol Trace Elem Res 2013; 153:76-83. [PMID: 23595590 DOI: 10.1007/s12011-013-9658-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Accepted: 03/27/2013] [Indexed: 11/25/2022]
Abstract
Trace element involvement in wounds left to heal by secondary intention needs clarification. We have previously reported faster healing of wounds following acute surgery compared with elective excision of pilonidal sinus disease. The effect of topical zinc on the closure of the excisional wounds was mediocre compared with placebo. In contrast, parenteral zinc, copper, and selenium combined appear effective for wound healing in humans. We have investigated zinc, copper, and selenium with respect to (a) impact of acute versus chronic pilonidal sinus and (b) regional concentrations within granulating wounds treated topically with placebo or zinc in 42 (33 males) pilonidal disease patients. Baseline serum and skin concentrations of copper correlated (r S = 0.351, p = 0.033, n = 37), but not of zinc or selenium. Patients with abscesses had elevated serum C-reactive protein (CRP) and copper levels (+29 %; p < 0.001) compared with the elective patients consistent with the strong correlation between serum copper and CRP (r S = 0.715, p < 0.0005, n = 41). Seven days after elective surgery, serum CRP and copper levels were elevated (p = 0.010) versus preoperative values. The copper concentration in wound edges was higher than in periwound skin (p < 0.0005) and wound base (p = 0.010). Selenium levels were increased in wound edge compared to wound base (p = 0.003). Topical zinc oxide treatment doubled (p < 0.050) zinc concentrations in the three tissue localizations without concomitant significant changes of copper or selenium levels. In conclusion, copper and selenium are mobilized to injured sites possibly to enhance host defense and early wound healing mechanisms that are complementary to the necessity of zinc for matrix metalloproteinase activity.
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Affiliation(s)
- Ursula Mirastschijski
- Department of Surgery K, Bispebjerg Hospital, Bispebjerg Bakke 23, 2400 Copenhagen, Denmark
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Johnson NR, Wang Y. Controlled delivery of heparin-binding EGF-like growth factor yields fast and comprehensive wound healing. J Control Release 2012; 166:124-9. [PMID: 23154193 DOI: 10.1016/j.jconrel.2012.11.004] [Citation(s) in RCA: 116] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 11/02/2012] [Accepted: 11/04/2012] [Indexed: 11/26/2022]
Abstract
Wound healing is a dynamic process that relies on coordinated signaling molecules to succeed. Heparin-binding epidermal growth factor (EGF)-like growth factor (HB-EGF) is proven to accelerate healing, however precise control over its application is necessary to reduce side effects and achieve desired therapeutic benefit. To achieve effective growth factor delivery we designed a bioactive heparin-based coacervate. In vitro, HB-EGF released from the coacervate delivery system displayed enhanced bioactivity and promoted human keratinocyte migration while preserving cell proliferative capability. In a mouse excisional full-thickness wound model, controlled release of HB-EGF within the wound significantly accelerated wound closure more effectively than an equal dosage of free HB-EGF. Healing was induced by rapid re-epithelialization, granulation tissue formation, and accompanied by angiogenesis. Consistent with in vitro results, wounds treated with HB-EGF coacervate exhibited enhanced migration of keratinocytes with retained proliferative potential, forming a confluent layer for regained barrier function within 7 days. Collectively, these results suggest that coacervate-based controlled release of HB-EGF may serve as a new therapy to accelerate healing of cutaneous wounds.
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Affiliation(s)
- Noah Ray Johnson
- Department of Bioengineering and the McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA 15219, USA
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Abstract
Topical antibiotics are used for various purposes in dermatology. Some of the most common uses include treatment of acne, treatment and prevention of wound infection(s), impetigo or impetiginized dermatitis, and staphylococcal nasal carrier state. It is important for the dermatologist to be familiar with the spectrum of activity, the mechanism of action, and the variables that may interfere with the antibiotic of choice. The following discussion will review an update on topical antibiotic use in acne, wound care, impetigo, and in staphylococcal nasal carriers.
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Affiliation(s)
- Carol R Drucker
- Department of Dermatology, University of Texas Medical School at Houston, MD Anderson Cancer Center, Houston, TX 77030, USA.
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Voigt J, Wendelken M, Driver V, Alvarez OM. Low-frequency ultrasound (20-40 kHz) as an adjunctive therapy for chronic wound healing: a systematic review of the literature and meta-analysis of eight randomized controlled trials. INT J LOW EXTR WOUND 2012; 10:190-9. [PMID: 22184750 DOI: 10.1177/1534734611424648] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Ultrasound as a therapeutic agent in chronic wound healing has been studied extensively. This systematic review and meta-analysis specifically examines low-frequency (20-30 kHz) ultrasound delivered at either low or high intensity. The objective of this review was to determine whether low-frequency ultrasound used as an adjunctive therapy improves the outcomes of complete healing and reduction of size of chronic lower limb wounds. PubMed, Cochrane/CENTRAL, technical assessment, relevant wound-related journals, and clinical guidelines were searched along with contacting manufacturers and authors of relevant randomized controlled trials were completed. Searches focused on the use of low-frequency ultrasound in randomized controlled trials. Data were collected via a data collection form and was adjudicated independently via coauthors. Meta-analyses and heterogeneity checks were performed using Mantel-Haenszel and inverse variance (fixed and random effects) statistical methods on studies with similar outcomes (complete healing and percent wound area reduction) over similar time periods. Single study results were reported via the statistical methods used in the study. Eight randomized controlled trials were identified. Results demonstrated that early healing (at ≤5 months) in patients with venous stasis and diabetic foot ulcers was favorably influenced by both high- and low-intensity ultrasound delivered at a low frequency-either via contact or noncontact techniques. However, the quality of the data may be suspect, especially for low-frequency low-intensity noncontact ultrasound because of significant biases. In patients presenting with either venous stasis or diabetic foot ulcers (Wagner classification 1-3), early healing appears to be facilitated by either low-frequency low-intensity noncontact ultrasound or low-frequency high-intensity contact ultrasound.
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Affiliation(s)
- Jeffrey Voigt
- Medical Device Consultants of Ridgewood LLC, 99 Glenwood Road, Ridgewood, NJ 07450, USA.
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Williams N, Sweetland H, Goyal S, Ivins N, Leaper DJ. Randomized trial of antimicrobial-coated sutures to prevent surgical site infection after breast cancer surgery. Surg Infect (Larchmt) 2011; 12:469-74. [PMID: 22142317 DOI: 10.1089/sur.2011.045] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Surgical site infection (SSI) is the fourth commonest healthcare-associated infection and complicates at least 5% of open operations. In a randomized clinical trial, antimicrobial-coated sutures were compared with their conventional counterparts, polyglactin and poliglecaprone, for skin closure after breast cancer surgery to assess their role in reducing the rate of SSI. METHODS Between November 2008 and February 2011, 150 female patients presenting with breast cancer to a single center were randomized to skin closure with antimicrobial-coated or plain sutures. Postoperatively, SSI was defined using the U.S. Centers for Disease Control and Prevention (CDC) definitions and scored using the ASEPSIS or Southampton systems by trained, blinded observers with close post-discharge surveillance and patient diaries. Surgeons and patients were blinded to the type of suture used. RESULTS Using CDC criteria, the overall rate of SSI was 18.9% at six weeks. Six patients (4.7%) needed intervention or readmission for SSI. Skin closure with antimicrobial sutures showed a non-statistically significant reduction in the SSI rate, to 15.2%, compared with conventional sutures (22.9%). A uniform tendency for fewer SSIs in the antimicrobial-coated suture group was found using ASEPSIS and Southampton scores, but again, the difference was not statistically significant. CONCLUSION The previously reported high rate of SSI related to breast surgery was confirmed. Using statistical modeling and earlier reports, the study was powered to show a difference using ASEPSIS scores, but the modification used in this trial failed to find a difference. Finding a statistically significant difference would have needed two to three times the number of patients recruited. Further evaluation of antimicrobial-coated sutures is merited, particularly if used as part of a care bundle to reduce SSI after breast cancer surgery.
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Affiliation(s)
- Nia Williams
- Department of Wound Healing and Dermatology, Cardiff University, Cardiff, United Kingdom
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Leaper D, Assadian O, Hubner NO, McBain A, Barbolt T, Rothenburger S, Wilson P. Antimicrobial sutures and prevention of surgical site infection: assessment of the safety of the antiseptic triclosan. Int Wound J 2011; 8:556-66. [PMID: 21854548 PMCID: PMC7950790 DOI: 10.1111/j.1742-481x.2011.00841.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
This article is based on a second Hygienist Panel meeting held in London on 16-17 June 2010. The Panel discussed the current use of antimicrobials and care bundles in the prevention of surgical site infection; the need to comply with good antibiotic stewardship, to reduce the risk of antibiotic-resistant and emergent organisms; and the need to revisit the use of antiseptics. The discussion was driven by concerns of the use of triclosan, which had been raised by a publication from the Scientific Committee on Consumer Products of the Directorate General for Health and Consumers, European Commission. Uncertainties that excessive use of triclosan for preservation and in cosmetics could select naturally resistant environmental organisms or induce reduced triclosan-susceptibility or antibiotic resistance were considered. It was concluded that the uses of triclosan with demonstrable health benefits, as in some medical applications (such as antimicrobial sutures), need to be distinguished from those where there is no proven benefit, such as its use in certain consumer products. The addition of triclosan to a product must be substantiated in any claim of preventive or therapeutic health benefit. Triclosan is the most widely studied biocide and this same level of information should be available for other topically used antimicrobials, which are widely used in surgical practice and chronic wound care.
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Affiliation(s)
- David Leaper
- Department of Dermatology and Wound Healing, Cardiff University, Cardiff, UK.
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Hampton S, Coulborn A, Tadej M, Bree-Aslan C. Using a superabsorbent dressing and antimicrobial for a venous ulcer. ACTA ACUST UNITED AC 2011; 20:S38, S40-3. [DOI: 10.12968/bjon.2011.20.sup8.s38] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Individualized, targeted wound treatment based on the tissue bacterial level as a biological marker. Am J Surg 2011; 202:220-4. [DOI: 10.1016/j.amjsurg.2010.09.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2010] [Revised: 09/17/2010] [Accepted: 09/17/2010] [Indexed: 11/22/2022]
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Bush JA, McGrouther DA, Young VL, Herndon DN, Longaker MT, Mustoe TA, Ferguson MWJ. Recommendations on clinical proof of efficacy for potential scar prevention and reduction therapies. Wound Repair Regen 2011; 19 Suppl 1:s32-7. [DOI: 10.1111/j.1524-475x.2010.00607.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Del Rosso JQ. Wound care in the dermatology office: Where are we in 2011? J Am Acad Dermatol 2011; 64:S1-7. [DOI: 10.1016/j.jaad.2010.10.038] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2010] [Revised: 10/19/2010] [Accepted: 10/21/2010] [Indexed: 11/25/2022]
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