scholarly journals Oxygen-Releasing Composites: A Promising Approach in the Management of Diabetic Foot Ulcers

Polymers ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 4131
Author(s):  
Dong-Jin Lim ◽  
Insoo Jang
Keyword(s):  
Diabetic Foot ◽  
Wound Dressing ◽  
Bioactive Molecules ◽  
Foot Ulcers ◽  
Medical Applications ◽  
Diabetic Foot Ulcers ◽  
Related Complication ◽  
Normal Wound Healing ◽  
Diabetic Wounds ◽  
Dressing Materials

In diabetes, lower extremity amputation (LEA) is an irreversible diabetic-related complication that easily occurs in patients with diabetic foot ulcers (DFUs). Because DFUs are a clinical outcome of different causes including peripheral hypoxia and diabetic foot infection (DFI), conventional wound dressing materials are often insufficient for supporting the normal wound healing potential in the ulcers. Advanced wound dressing development has recently focused on natural or biocompatible scaffolds or incorporating bioactive molecules. This review directs attention to the potential of oxygenation of diabetic wounds and highlights current fabrication techniques for oxygen-releasing composites and their medical applications. Based on different oxygen-releasable compounds such as liquid peroxides and solid peroxides, for example, a variety of oxygen-releasing composites have been fabricated and evaluated for medical applications. This review provides the challenges and limitations of utilizing current oxygen releasable compounds and provides perspectives on advancing oxygen releasing composites for diabetic-related wounds associated with DFUs.

Blind Comparative study between Silver nanoparticles dressings and Standard Moist Wound Dressings (SMWD) in management of diabetic foot ulcers

QJM ◽  
2021 ◽  
Vol 114 (Supplement_1) ◽  
Author(s):  
Amr Abdelaal ◽  
Mostafa Soliman ◽  
Hany Rafik ◽  
Mohamed Emam ◽  
Mohamed Mahmoud Mohamed Elsadek
Keyword(s):  
Silver Nanoparticles ◽  
Diabetic Foot ◽  
Wound Dressing ◽  
Treatment Modalities ◽  
Controlled Study ◽  
Foot Ulcers ◽  
Diabetic Patients ◽  
Diabetic Foot Ulcers ◽  
Group A ◽  
Group B

Abstract Background Diabetic foot ulcers (DFUs) are the main cause of hospitalization in diabetic patients and they are considered a major worldwide health problem. Thus, there is a need to evaluate various treatment modalities. In this study we will assess the clinical efficacy of Silver nanoparticles dressing vs Standard Moist Wound Dressing (SMWD) in management of diabetic foot ulcers. Objective To compare wound outcome, limb salvage, healing time of diabetes related foot ulcers and cost effectiveness in terms of duration of hospital stay between Silver nanotechnology dressings and Standard moist wound therapy (SMWT) in management of diabetic foot ulcers. Patients and Methods This is a prospective randomized controlled study involving 34 patients with active diabetic foot ulcers, in a high volume tertiary referral vascular center. They were divided into 2 groups: 17 patients (group A) were prescribed SMWD and the other 17 patients (group B) received Silver nanoparticles wound dressing. Results Our study correlates with the study conducted by K.Suhas et al. which had observed that Silver nanoparticles wound dressing was safe and effective treatment for complex diabetic foot wounds and could lead to higher proportion of healed wounds and faster healing rates. At the end of the study, group B promised a better outcome as compared to group A. Conclusion The role of Silver nanoparticles wound dressing in healing of diabetic foot ulcers has been proposed as a novel method of manipulating the chronic wound environment in a way that it reduces bacterial burden and chronic interstitial wound fluid, increases vascularity and cytokine expression and to an extent mechanically exploiting the viscoelasticity of peri wound tissues.

Maggot debridement therapy to treat hard-to-heal diabetic foot ulcers: a single-centre study

2021 ◽  
Vol 30 (Sup12) ◽  
pp. S30-S36
Author(s):  
Harikrishna KR Nair ◽  
Nazni Wasi Ahmad ◽  
AA Ismail ◽  
Ali A Alabed ◽  
Benjamin Oh Zheming ◽  
...  
Keyword(s):  
Diabetic Foot ◽  
Case Series ◽  
Cost Effective ◽  
Lucilia Cuprina ◽  
Study Endpoint ◽  
Foot Ulcers ◽  
Diabetic Foot Ulcers ◽  
Necrotic Tissue ◽  
Maggot Debridement Therapy ◽  
Diabetic Wounds

Objective: Maggot debridement therapy (MDT) has seen a resurgence in recent years in the treatment of hard-to-heal wounds, as a result of rising antibiotic resistance. The sterilised larvae of Lucilia cuprina have been used in MDT in Malaysia since 2003, with encouraging results for the treatment of hard-to-heal diabetic wounds. We report a case series of 30 patients selected from our clinic by convenient sampling with diabetic lower limb ulcers treated with MDT. The average age of patients receiving MDT was >50 years. Of the 30 patients in the study, nine were female and 21 were male. All patients had underlying diabetes, two patients had leg ulcers and 28 patients had diabetic foot ulcers. Sterilised Lucilia cuprina larvae were applied via a standard method of 10 maggots per square centimetre and dressed with sterile gauze. The study endpoint was defined as ≤5% coverage with slough or necrotic tissue following three successive applications of MDT. In this study, maximum debridement of wounds was achieved in 96.6% (29 patients) of our patients, with ≤5% coverage with slough or necrotic tissue, in addition to a reduction in wound-related pain, as assessed by a visual analogue scale. No adverse events were reported. The findings of this study support the use of MDT as a safe, efficacious, and cost-effective method of managing diabetic wounds.

scholarly journals Evaluation of Polyvinyl Alcohol/Cobalt Substituted Hydroxyapatite Nanocomposite as a Potential Wound Dressing for Diabetic Foot Ulcers

2020 ◽  
Vol 21 (22) ◽  
pp. 8831
Author(s):  
Wei-Chun Lin ◽  
Cheng-Ming Tang
Keyword(s):  
Polyvinyl Alcohol ◽  
Diabetic Foot ◽  
Wound Dressing ◽  
Foot Ulcers ◽  
Diabetic Foot Ulcers ◽  
E Coli ◽  
Accelerate Wound Healing ◽  
Persistent Infections ◽  
Electrochemically Deposited ◽  
Potential Applications

Diabetic foot ulcers (DFUs) caused by diabetes are prone to serious and persistent infections. If not treated properly, it will cause tissue necrosis or septicemia due to peripheral blood vessel embolism. Therefore, it is an urgent challenge to accelerate wound healing and reduce the risk of bacterial infection in patients. In clinical practice, DFUs mostly use hydrogel dressing to cover the surface of the affected area as an auxiliary treatment. Polyvinyl alcohol (PVA) is a hydrophilic hydrogel polymer widely used in dressings, drug delivery, and medical applications. However, due to its weak bioactivity and antibacterial ability, leads to limited application. Filler adding is a useful way to enhance the biocompatibility of PVA. In our study, cobalt-substituted hydroxyapatite (CoHA) powder was prepared by the electrochemically-deposited method. PVA and PVA-CoHA nanocomposite were prepared by the solvent casting method. The bioactivity of the PVA and composite was evaluated by immersed in simulated body fluid for 7 days. In addition, L929 cells and E. coli were used to evaluate the cytotoxicity and antibacterial tests of PVA and PVA-CoHA nanocomposite. The results show that the addition of CoHA increases the mechanical properties and biological activity of PVA. Biocompatibility evaluation showed no significant cytotoxicity of PVA-CoHA composite. In addition, a small amount of cobalt ion was released to the culture medium from the nanocomposite in the cell culture period and enhanced cell growth. The addition of CoHA also confirmed that it could inhibit the growth of E. coli. PVA-CoHA composite may have potential applications in diabetic trauma healing and wound dressing.

scholarly journals Topically Applied Connective Tissue Growth Factor/CCN2 Improves Diabetic Preclinical Cutaneous Wound Healing: Potential Role for CTGF in Human Diabetic Foot Ulcer Healing

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
F. R. Henshaw ◽  
P. Boughton ◽  
L. Lo ◽  
S. V. McLennan ◽  
S. M. Twigg
Keyword(s):  
Wound Healing ◽  
Granulation Tissue ◽  
Ulcer Healing ◽  
Diabetic Foot ◽  
Healing Rate ◽  
Foot Ulcer ◽  
Foot Ulcers ◽  
Diabetic Foot Ulcers ◽  
Wound Fluid ◽  
Diabetic Wounds

Aims/Hypothesis. Topical application of CTGF/CCN2 to rodent diabetic and control wounds was examined. In parallel research, correlation of CTGF wound fluid levels with healing rate in human diabetic foot ulcers was undertaken.Methods. Full thickness cutaneous wounds in diabetic and nondiabetic control rats were treated topically with 1 μg rhCTGF or vehicle alone, on 2 consecutive days. Wound healing rate was observed on day 14 and wound sites were examined for breaking strength and granulation tissue. In the human study across 32 subjects, serial CTGF regulation was analyzed longitudinally in postdebridement diabetic wound fluid.Results. CTGF treated diabetic wounds had an accelerated closure rate compared with vehicle treated diabetic wounds. Healed skin withstood more strain before breaking in CTGF treated rat wounds. Granulation tissue from CTGF treatment in diabetic wounds showed collagen IV accumulation compared with nondiabetic animals. Woundα-smooth muscle actin was increased in CTGF treated diabetic wounds compared with untreated diabetic wounds, as was macrophage infiltration. Endogenous wound fluid CTGF protein rate of increase in human diabetic foot ulcers correlated positively with foot ulcer healing rate (r=0.406;P<0.001).Conclusions/Interpretation. These data collectively increasingly substantiate a functional role for CTGF in human diabetic foot ulcers.

Evaluation of the safety and healing potential of a fibroin-aloe gel film for the treatment of diabetic foot ulcers

2021 ◽  
Vol 30 (12) ◽  
pp. 1020-1028
Author(s):  
Saran Worasakwutiphong ◽  
Tanapron Termwattanaphakdee ◽  
Thanpawee Kamolhan ◽  
Preeyawass Phimnuan ◽  
Anuphan Sittichokechaiwut ◽  
...  
Keyword(s):  
Porous Structure ◽  
Diabetic Foot ◽  
Wound Dressing ◽  
Foot Ulcers ◽  
Diabetic Foot Ulcers ◽  
Swelling Ratio ◽  
Wound Area ◽  
Area Reduction ◽  
Gel Film ◽  
Aloe Gel

Objective: This study aimed to develop a wound dressing prepared from the blending of silkworm fibroin and aloe gel extract for use in the treatment of diabetic foot ulcers (DFUs). Methods: Fibroin extracted from silkworm cocoons and aloe gel extract were dissolved in deionised water. pH levels were then adjusted with lactic acid solution. A simple casting technique was used to obtain the fibroin–aloe gel film. The surface morphology, hardness, flexibility and infrared spectrum of the sterilised film were tested. Swelling ratio was measured from changes in weight. The cytocompatibility of the film to human dermal fibroblast was determined using XTT assay. Hard-to-heal DFUs (grade I Wagner score) were treated with the film for four weeks. The application site was assessed for allergic reactions and/or sensitisation. Wound size was measured using standardised digital photography. Results: A total of five hard-to-heal DFUs were treated. The obtained film sterilised with ozonation showed a non-porous structure. The elongation at break and tensile strength of the wet film were 9.00±0.95% and 6.89±1.21N, respectively. Fourier-transform infrared spectroscopy data indicated the presence of amides I, II and III, of peptide linkage, which are the chemical characteristics of the fibroin. Functional groups relating to healing activity of the aloe gel extract were also found. The swelling ratio of the film immersed in water for 24 hours was 0.8±0.01. In three DFUs (40–50mm2 in size), a wound area reduction of 0.4–0.8mm2/day was observed and were healed in 2–3 weeks. The remaining two SFUs (500mm2 in size) showed a wound area reduction of 4mm2/day and were almost closed at four weeks. No allergic reaction or infection was observed in any of the wounds. Conclusion: The obtained film showed a non-porous structure, and its strength and flexibility were adequate for storage and handling. The film tended to increase the proliferation of fibroblasts. The wound dressing showed potential for accelerating the healing rate of DFUs.

Potential Biomolecules and Current Treatment Technologies for Diabetic Foot Ulcer: An Overview

2018 ◽  
Vol 15 (1) ◽  
pp. 2-14 ◽  
Author(s):  
Zenith Khashim ◽  
Shila Samuel ◽  
Nallusamy Duraisamy ◽  
Kathiravan Krishnan
Keyword(s):  
Diabetic Foot ◽  
Foot Ulcer ◽  
Diabetic Foot Ulcer ◽  
Limb Amputation ◽  
Foot Ulcers ◽  
Diabetic Patients ◽  
Diabetic Foot Ulcers ◽  
Impaired Wound Healing ◽  
Advanced Therapies ◽  
Dressing Materials

Background:Diabetic foot ulceration remains a major challenge and is one of the most expensive and leading causes of major and minor amputations among patients with diabetic foot ulcer. Hence the purpose of this review is to emphasize on potential molecular markers involved in diabetic foot ulcer physiology, the efficacy of different types of dressing materials, adjunct therapy and newer therapeutic approach like nanoparticles for the treatment of diabetic foot ulcer.Methods:We conducted a systematic literature review search by using Pubmed and other web searches. The quality evidence of diabetic foot ulcer biomolecules and treatments was collected, summarized and compared with other studies.Results:The present investigation suggested that impaired wound healing in diabetic patients is an influence of several factors. All the advanced therapies and foot ulcer dressing materials are not suitable for all types of diabetic foot ulcers, however more prospective follow ups and in vivo and in vitro studies are needed to draw certain conclusion. Several critical wound biomolecules have been identified and are in need to be investigated in diabetic foot ulcers. The application of biocompatible nanoparticles holds a promising approach for designing dressing materials for the treatment of diabetic foot ulcer.Conclusion:Understanding the cellular and molecular events and identifying the appropriate treatment strategies for different foot ulcer grades will reduce recurrence of foot ulcer and lower limb amputation.

scholarly journals Targeting MMP-9 in Diabetic Foot Ulcers

2019 ◽  
Vol 12 (2) ◽  
pp. 79 ◽  
Author(s):  
Jeffrey I. Jones ◽  
Trung T. Nguyen ◽  
Zhihong Peng ◽  
Mayland Chang
Keyword(s):  
Wound Healing ◽  
Diabetic Foot ◽  
Healing Process ◽  
Foot Ulcers ◽  
Wound Healing Process ◽  
Diabetic Foot Ulcers ◽  
Novel Approach ◽  
Medical Need ◽  
Diabetic Wound Healing ◽  
Diabetic Wounds

Diabetic foot ulcers (DFUs) are significant complications of diabetes and an unmet medical need. Matrix metalloproteinases (MMPs) play important roles in the pathology of wounds and in the wound healing process. However, because of the challenge in distinguishing active MMPs from the two catalytically inactive forms of MMPs and the clinical failure of broad-spectrum MMP inhibitors in cancer, MMPs have not been a target for treatment of DFUs until recently. This review covers the discovery of active MMP-9 as the biochemical culprit in the recalcitrance of diabetic wounds to healing and targeting this proteinase as a novel approach for the treatment of DFUs. Active MMP-8 and MMP-9 were observed in mouse and human diabetic wounds using a batimastat affinity resin and proteomics. MMP-9 was shown to play a detrimental role in diabetic wound healing, whereas MMP-8 was beneficial. A new class of selective MMP-9 inhibitors shows clinical promise for the treatment of DFUs.

scholarly journals Treatment of diabetic foot ulcers

2021 ◽  
Vol 64 (8) ◽  
pp. 529-536
Author(s):  
Jiyong Ahn
Keyword(s):  
Wound Healing ◽  
Cost Effectiveness ◽  
Soft Tissue ◽  
Diabetic Foot ◽  
Healing Process ◽  
Foot Ulcers ◽  
Wound Healing Process ◽  
Diabetic Foot Ulcers ◽  
High Quality ◽  
Dressing Materials

Background: Diabetic foot ulcers (DFUs), a risk factor for infection, remain a difficult clinical complication. Infected DFUs may be associated with lower extremity amputation. To achieve wound healing and avoid amputation, an assortment of dressing materials and negative pressure wound therapy (NPWT) have been used on soft tissue injuries resulting from infected DFUs. A great deal of interest about the use of dressing materials and NPWT in the treatment of DFUs has arisen. However, there have only been a few high-quality studies regarding this topic.Current Concepts: Ideal dressing materials should satisfy certain conditions to alleviate symptoms of DFU infection and enhance the wound healing process. A single dressing material cannot fulfill all of these requirements. Based on clinical trials, different dressing materials must be chosen according to the status of the individual wound environment, including the amount of exudate, degree of pain, severity of the infection, and cost-effectiveness. However, there has been no clear evidence that advanced wound dressing materials are superior to basic dressing materials in wound healing. Recently, NPWT has been used to cover the soft tissue defects of infected DFU with granulation tissue. NPWT may contribute to changing growth factor expression, micro- and macro-deformation, vascular flow, amount of exudate, and the bacterial environment in DFU, despite the unclear mechanism of its role in wound repair.Discussion and Conclusion: Further research to obtain high-quality evidence regarding the benefits of using dressing materials and NPWT is needed. The optimal protocol for DFU and cost-effectiveness should be included in these future studies.

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