scholarly journals Disrupting the biofilm matrix improves wound healing outcomes

2015 ◽  
Vol 24 (8) ◽  
pp. 366-371 ◽  
Author(s):  
R. Wolcott
Keyword(s):  
Wound Healing ◽  
Extracellular Polymeric Substances ◽  
Wound Care ◽  
Controlled Trial ◽  
Standard Of Care ◽  
Surrogate Endpoint ◽  
Topical Antibiotics ◽  
Slime Layer ◽  
The Matrix ◽  
Biofilm Matrix

Objective: The most unyielding molecular component of biofilm communities is the matrix structure that it can create around the individual microbes that constitute the biofilm. The type of polymeric substances (polymeric sugars, bacterial proteins, bacterial DNA and even co-opted host substances) are dependent on the microbial species present within the biofilm. The extracellular polymeric substances that make up the matrix give the wound biofilm incredible colony defences against host immunity, host healing and wound care treatments. This polymeric slime layer, which is secreted by bacteria, encases the population of microbes, creating a physical barrier that limits the ingress of treatment agents to the bacteria. The aim of this study was to determine if degrading the wound biofilm matrix would improve wound healing outcomes and if so, if there was a synergy between treating agents that disrupted biofilm defenses with Next Science Wound Gel (wound gel) and cidal agents (topical antibiotics). Method: A three-armed randomised controlled trial was designed to determine if standard of care (SOC) was superior to SOC plus wound gel (SOC + gel) and wound gel alone. The wound gel used in this study contains components that directly attack the biofilm extracellular polymeric substance. The gel was applied directly to the wound bed on a Monday–Wednesday–Friday interval, either alone or with SOC topical antibiotics. Results: Using a surrogate endpoint of 50% reduction in wound volume, the results showed that SOC healed at 53%, wound gel healed at 80%, while SOC plus wound gel showed 93% of wounds being successfully treated. Conclusion: By directly targeting the wound biofilm matrix, wound healing outcomes are improved.

Complex Wound Healing Outcomes for Outpatients Receiving Care via Telemedicine, Home Health, or Wound Clinic: A Randomized Controlled Trial

2019 ◽  
Vol 19 (2) ◽  
pp. 197-204 ◽  
Author(s):  
Luc Téot ◽  
Chloé Geri ◽  
Julie Lano ◽  
Marjorie Cabrol ◽  
Christine Linet ◽  
...  
Keyword(s):  
Wound Healing ◽  
Randomized Controlled Trial ◽  
Wound Care ◽  
Controlled Trial ◽  
Home Health ◽  
Publicly Funded ◽  
Care Clinic ◽  
Randomized Controlled ◽  
Complex Wound ◽  
Clinic Group

Use of telemedicine has expanded rapidly in recent years, yet there are few comparative studies to determine its effectiveness in wound care. To provide experimental data in the field of telemedicine with regard to wound care, a pilot project named “Domoplaies” was publicly funded in France in 2011. A randomized, controlled trial was performed to measure the outcomes of patients with complex wounds who received home wound care from a local clinician guided by an off-site wound care expert via telemedicine, versus patients who received in-home or wound clinic visits with wound care professionals. The publicly funded network of nurses and physicians highly experienced in wound healing was used to provide wound care recommendations via telemedicine for the study. The healing rate at 6 months was slightly better for patients who received wound care via telemedicine (61/89; 68.5%) versus wound care professional at home (38/59; 64.4%) versus wound care clinic (22/35; 62.9%), but the difference was not significant ( P = .860833). The average time to healing for the 121/183 wounds that healed within 6 months was 66.8 ± 32.8 days for the telemedicine group, 69.3 ± 26.7 for the wound care professional at home group, and 55.8 ± 25.0 days for the wound care clinic group. Transportation costs for the telemedicine and home health care groups were significantly lower than the wound clinic group, and death rate was similar between all the 3 groups ( P < .01). Telemedicine performed by wound healing clinicians working in a network setting offered a safe option to remotely manage comorbid, complex wound care patients with reduced mobility.

Management of hard-to-heal leg ulcers with an acid-oxidising solution versus standard of care: the MACAN study

2021 ◽  
Vol 30 (9) ◽  
pp. 694-704
Author(s):  
Robert Strohal ◽  
Martina Mittlböck ◽  
Werner Müller ◽  
Gilbert Hämmerle
Keyword(s):  
Wound Healing ◽  
Adverse Events ◽  
Controlled Trial ◽  
Standard Of Care ◽  
Size Reduction ◽  
Wound Dressings ◽  
Leg Ulcers ◽  
Open Label ◽  
Serious Adverse Events ◽  
Wound Size

Objective: The efficacy of available wound dressings in the treatment of hard-to-heal wounds is limited. A new therapeutic approach using an acid-oxidising solution (AOS) was developed. Its effect on healing progress, tolerability and safety properties were investigated in a clinical study, and compared with standard of care (SOC) wound dressings. The study aimed to demonstrate the non-inferiority of AOS to SOC in terms of wound healing progress. Method: This open-label, randomised controlled trial was conducted at two study centres in Austria with patients with either infected or non-infected hard-to-heal leg ulcers of different aetiology. Patients were treated for six weeks either with AOS or SOC wound dressings. Outcome assessments included the percentage of granulation and re-epithelialisation tissue, wound size reduction, changes in wound pH, infection control and wound pain, local tolerability and adverse events (AEs). Healing time and rate were also assessed. Results: A total of 50 patients took part. In the AOS group, wounds exhibited higher amounts of granulation and re-epithelialisation tissue, and a faster and more pronounced wound size reduction compared with wounds in the SOC group. In the AOS-treated versus SOC-treated patients, a greater percentage of complete healing of hard-to-heal ulcers was achieved by the end of the study period (32% versus 8%, respectively). Furthermore, the wound pH decreased significantly faster in these wounds (p<0.0001). In all patients with infected leg ulcers, local infection was overcome more rapidly under AOS treatment. In the AOS group, one AE and no serious adverse events (SAEs) were detected versus 24 AEs and two SAEs in the SOC group. Conclusion: In this study, AOS proved to be a highly effective treatment to support wound healing in infected or non-infected hard-to-heal leg ulcers of different aetiology. Efficacy was found to be not only non-inferior but superior to SOC wound dressings. Furthermore, tolerability and safety profiles were favourable for AOS.

scholarly journals Direct Comparison of Physical Properties of Bacillus subtilis NCIB 3610 and B-1 Biofilms

2016 ◽  
Vol 82 (8) ◽  
pp. 2424-2432 ◽  
Author(s):  
Sara Kesel ◽  
Stefan Grumbein ◽  
Ina Gümperlein ◽  
Marwa Tallawi ◽  
Anna-Kristina Marel ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Bacillus Subtilis ◽  
Physical Properties ◽  
Extracellular Polymeric Substances ◽  
Surface Elasticity ◽  
Extreme Resistance ◽  
Content Type ◽  
The Matrix ◽  
Induced Changes ◽  
Biofilm Matrix

ABSTRACTMany bacteria form surface-attached communities known as biofilms. Due to the extreme resistance of these bacterial biofilms to antibiotics and mechanical stresses, biofilms are of growing interest not only in microbiology but also in medicine and industry. Previous studies have determined the extracellular polymeric substances present in the matrix of biofilms formed byBacillus subtilisNCIB 3610. However, studies on the physical properties of biofilms formed by this strain are just emerging. In particular, quantitative data on the contributions of biofilm matrix biopolymers to these physical properties are lacking. Here, we quantitatively investigated three physical properties ofB. subtilisNCIB 3610 biofilms: the surface roughness and stiffness and the bulk viscoelasticity of these biofilms. We show how specific biomolecules constituting the biofilm matrix formed by this strain contribute to those biofilm properties. In particular, we demonstrate that the surface roughness and surface elasticity of 1-day-old NCIB 3610 biofilms are strongly affected by the surface layer protein BslA. For a second strain,B. subtilisB-1, which forms biofilms containing mainly γ-polyglutamate, we found significantly different physical biofilm properties that are also differently affected by the commonly used antibacterial agent ethanol. We show that B-1 biofilms are protected from ethanol-induced changes in the biofilm's stiffness and that this protective effect can be transferred to NCIB 3610 biofilms by the sole addition of γ-polyglutamate to growing NCIB 3610 biofilms. Together, our results demonstrate the importance of specific biofilm matrix components for the distinct physical properties ofB. subtilisbiofilms.

Comparison of sterile polyacrylate wound dressing with activated carbon cloth and a standard non-adhesive hydrocellular foam dressing with silver: a randomised controlled trial protocol

2019 ◽  
Vol 28 (11) ◽  
pp. 722-728
Author(s):  
Sebastian Probst ◽  
Camille Saini ◽  
Monika Buehrer Skinner
Keyword(s):  
Wound Healing ◽  
Activated Carbon ◽  
Randomised Controlled Trial ◽  
Wound Dressing ◽  
Wound Care ◽  
Controlled Trial ◽  
Wound Dressings ◽  
Carbon Cloth ◽  
Activated Carbon Cloth ◽  
Randomised Controlled

Objective: Hard-to-heal wounds such as leg (LU) or diabetic foot ulcers (DFU) are slow healing, have a high recurrence rate and are associated with infection, smell and exudate. Current therapeutic approaches are multifaceted and focus on improving wound healing and preventing recurrences. Advanced wound dressings, especially super absorbent dressings are an important aspect of wound care, as hard-to-heal wounds tend to produce excessive amounts of exudate, which may contribute to maceration and excoriation, thus delaying wound healing. Additionally, excessive wound exudate is associated with malodour. Therefore, an important aspect of care is the management of exudate and odour. The use of effective advanced wound dressings is a promising strategy to achieve adequate absorption of wound exudate and malodour promoting wound healing. The aim of the current study is to determine whether there is a difference in wound size reduction between wounds dressed with either a sterile polyacrylate wound dressing with activated carbon cloth or a hydrocellular foam dressing with silver. Method: A randomised controlled trial with 248 participants in one wound care outpatient clinic is proposed. Randomisation will be concealed. The outcome assessor will be blinded to the group allocation of participants. Conclusion: This research project compares two wound dressings in an everyday care setting. Since the cost of hard-to-heal wounds to individuals, the economy and society is high, an evaluation of which wound dressing leads to a faster reduction of wound size and subsequent wound healing is an important issue/question for the individuals affected, their families, society and the health-care system.

scholarly journals POS0844 EFFECTS OF SERIAL LOCALLY APPLIED WATER-FILTERED INFRARED A RADIATION IN PATIENTS WITH SYSTEMIC SCLEROSIS WITH SEVERE RAYNAUD’S SYNDROME RECEIVING PROSTAGLANDINE TREATMENT – A RANDOMIZED CONTROLLED TRIAL

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 676.1-676
Author(s):  
P. Klemm ◽  
J. Bär ◽  
I. Aykara ◽  
K. Frommer ◽  
E. Neumann ◽  
...  
Keyword(s):  
Wound Healing ◽  
Randomized Controlled Trial ◽  
Systemic Sclerosis ◽  
Primary Outcome ◽  
Controlled Trial ◽  
Standard Of Care ◽  
Hyperthermia Treatment ◽  
Applied Water ◽  
Randomized Controlled ◽  
Secondary Outcomes

Background:More than 95% of patients with systemic sclerosis (SSc) suffer from Raynaud’s syndrome (RS) leading to digital ulcerations (DU). In severe RS, intravenous application of prostaglandins is required. Moreover, these patients profit from an additional non-pharmacological treatment using hyperthermia to increase vasodilatation and perfusion, and to reduce pain.Serial locally applied water-filtered infrared A radiation (sl-wIRAR) is a hyperthermia treatment modality using infrared heat radiation in the range of 780-1400nm with high tissue penetration and low thermal load on the skin surface [1]. wIRAR has both, temperature-dependent and non-dependent effects, which do not inherit thermal energy transfer and/or relevant temperature changes [1]. It is therefore not only used in acute and chronic wound healing as it promotes perfusion, alleviates pain and has anti-infectious effects [2], but is also used in oncology [3] and rheumatology [4].Objectives:We conducted a randomized controlled trial with a follow-up visit after 2 weeks to evaluate the value of a high-frequent hyperthermia treatment using sl-wIRAR in comparison to a low-frequent hyperthermia treatment (our standard) in SSc patients with severe RS receiving Iloprost treatment.Methods:Eligible patients had SSc according to the 2013 ACR/EULAR classification criteria, were 18 to 80 years old and had RS requiring treatment with Iloprost in an in-patient setting. Key exclusion criteria were contraindications to any hyperthermia treatment such as infection or heat insensitivity. The trial was conducted at Campus Kerckhoff of Justus-Liebig University Giessen. Eligible patients were equally randomized to the intervention group (IG) receiving additional sl-wIRAR treatment (2 treatments for 30 min per day for 8 days) plus the standard of care (Iloprost treatment over 8 days plus daily carbon dioxide hand baths of 20 min) and the control group (CG) receiving only the standard of care. Primary outcome was the between-group difference in pain measured on a numeric rating scale (NRS) after intervention. Key secondary outcomes included a change in RS frequency, RS duration, and a change in Interleukin (IL) -6 and VEGF levels.Results:From 01.03.2020 to 31.12.2020 49 SSc patients met the inclusion criteria. 42 patients were enrolled (IG: 21, CG: 21). 38 patients (IG:19, CG: 19) completed the full trial period and were analyzed. There was no statistically significant between-group difference in pain levels (NRS) (p=0.284, Z -1.082 (Mann-Whitney U Test)) and thus the primary outcome was not met. Therefore, all p values for secondary outcomes are nominal. Intensity (Visual analogue scale 0-100mm) and duration (min) of RS were reduced in the IG (mean ± standard error) -14.579 ± 7.214 mm (p=0.058) and -2.917 ± 1.510 min (p=0.08), respectively. Intra- and inter-group comparison of IL-6 and VEGF levels showed no relevant change.Conclusion:The additive and frequent use of sl-wIRAR in the treatment of SSc patients with RS requiring Iloprost treatment does not improve outcomes regarding pain levels, RS intensity or frequency nor IL-6 and VEGF levels when compared to Iloprost treatment and low-frequent hyperthermia application.References:[1]Hoffmann G. Clinical applications of water-filtered infrared-A (wIRA) – a review. Phys Med Rehab Kuror. 2017;27(05):265–274.[2]Hoffmann G, Harte M, Mercer JB. Heat for wounds – water-fil- tered infrared-a (wIRA) for wound healing – a review. GMS Ger Med Sci. 2016;14:Doc08.[3]Notter M, Thomsen AR, Nitsche M, et al. Combined wIRA-hyperthermia and hypofractionated re-irradiation in the treatment of locally recurrent breast cancer: evaluation of therapeutic outcome based on a novel size classification. Cancers (Basel). 2020;12(3): 606.[4]Klemm P, Eichelmann M, Aykara I et al. Serial locally applied water-filtered infrared a radiation in axial spondyloarthritis – a randomized controlled trial, International Journal of Hyperthermia, 37:1, 965-970.Acknowledgements:We acknowledge the help of Carina Schreiyäck.This study was in part supported by the Dr. med. h.c. Erwin Braun Foundation, Basel, a charitable, nonprofit Swiss scientific foundation approved by the Swiss Federal Administration. The foundation supports clinical investigation of waterfiltered infrared-A. The foundation was not involved in any content- or decision-related aspect of the study.This study was prospectively registered at www.drks.de (German Registry of Clinical Studies): DRKS00021098Disclosure of Interests:None declared

scholarly journals Cutaneous wound healing: Current concepts and advances in wound care

2014 ◽  
Vol 47 (03) ◽  
pp. 303-317 ◽  
Author(s):  
Kenneth C Klein ◽  
Somes Chandra Guha
Keyword(s):  
Wound Healing ◽  
Wound Care ◽  
Standard Of Care ◽  
Medical Community ◽  
Medical Society ◽  
Cutaneous Wounds ◽  
General Acceptance ◽  
Healing Wound ◽  
The Usa ◽  
Variable Success

ABSTRACTA non-healing wound is defined as showing no measurable signs of healing for at least 30 consecutive treatments with standard wound care.[1] It is a snapshot of a patient’s total health as well as the ongoing battle between noxious factors and the restoration of optimal macro and micro circulation, oxygenation and nutrition. In practice, standard therapies for non-healing cutaneous wounds include application of appropriate dressings, periodic debridement and eliminating causative factors.[2] The vast majority of wounds would heal by such approach with variable degrees of residual morbidity, disability and even mortality. Globally, beyond the above therapies, newer tools of healing are selectively accessible to caregivers, for various logistical or financial reasons. Our review will focus on the use of hyperbaric oxygen therapy (HBOT), as used at our institution (CAMC), and some other modalities that are relatively accessible to patients. HBOT is a relatively safe and technologically simpler way to deliver care worldwide. However, the expense for including HBOT as standard of care for recognized indications per UHMS(Undersea and Hyperbaric Medical Society) may vary widely from country to country and payment system.[3] In the USA, CMS (Centers for Medicare and Medicaid Services) approved indications for HBOT vary from that of the UHMS for logistical reasons.[1] We shall also briefly look into other newer therapies per current clinical usage and general acceptance by the medical community. Admittedly, there would be other novel tools with variable success in wound healing worldwide, but it would be difficult to include all in this treatise.

scholarly journals Wound dressings: curbing inflammation in chronic wound healing

2021 ◽  
Author(s):  
Davide Vincenzo Verdolino ◽  
Helen A. Thomason ◽  
Andrea Fotticchia ◽  
Sarah Cartmell
Keyword(s):  
Wound Healing ◽  
Chronic Wounds ◽  
Chronic Wound ◽  
Wound Care ◽  
Healing Process ◽  
Standard Of Care ◽  
The Elderly ◽  
Wound Dressings ◽  
Wound Healing Process

Chronic wounds represent an economic burden to healthcare systems worldwide and a societal burden to patients, deeply impacting their quality of life. The incidence of recalcitrant wounds has been steadily increasing since the population more susceptible, the elderly and diabetic, are rapidly growing. Chronic wounds are characterised by a delayed wound healing process that takes longer to heal under standard of care than acute (i.e. healthy) wounds. Two of the most common problems associated with chronic wounds are inflammation and infection, with the latter usually exacerbating the former. With this in mind, researchers and wound care companies have developed and marketed a wide variety of wound dressings presenting different compositions but all aimed at promoting healing. This makes it harder for physicians to choose the correct therapy, especially given a lack of public quantitative data to support the manufacturers’ claims. This review aims at giving a brief introduction to the clinical need for chronic wound dressings, focusing on inflammation and evaluating how bio-derived and synthetic dressings may control excess inflammation and promote healing.

Experience of negative pressure wound therapy over sternal wound healing: A retrospective review

WCET Journal ◽  
2019 ◽  
Vol 39 (2) ◽  
pp. 9-18
Author(s):  
Wai Sze Ho ◽  
Wai Kuen Lee ◽  
Ka Kay Chan ◽  
Choi Ching Fong
Keyword(s):  
Wound Healing ◽  
Negative Pressure ◽  
Negative Pressure Wound Therapy ◽  
Assessment Tool ◽  
Wound Care ◽  
Wound Therapy ◽  
Treatment Pathways ◽  
Wound Assessment ◽  
One Year

Objectives The aim of this study was to retrospectively review the effectiveness of negative pressure wound therapy (NPWT) in sternal wound healing with the use of the validated Bates-Jensen Wound Assessment Tool (BWAT), and explore the role of NPWT over sternal wounds and future treatment pathways. Methods Data was gathered from patients' medical records and the institution's database clinical management system. Seventeen subjects, who had undergone cardiothoracic surgeries and subsequently consulted the wound care team in one year were reviewed. Fourteen of them were included in the analysis. Healing improvement of each sternal wound under continuous NPWT and continuous conventional dressings was studied. In total, 23 continuous NPWT and 13 conventional dressing episodes were analysed with the BWAT. Results Among conventional dressing episodes, sternal wound improvement was 2.5–3% over 10 days to 3.5 weeks, whereas 4–5% sternal healing was achieved in 5 days to 2 weeks with sternal wire presence. Better healing at 11% in 1 week by conventional dressing was attained after sternal wire removal. In NPWT episodes, 8–29%, 13–24%, and 15–46% of healing was observed in 2 weeks, 3.5 to 5 weeks and 6 to 7 weeks, respectively. Only 39% wound healing was acquired at the 13th week of NPWT in one subject. With sternal wire present, 6%–29% wound healing progress was achieved by NPWT in 1–4 weeks, and 16–23% wound improvement in 2 to 4.5 weeks by NWPT after further surgical debridement. After sternal wire removal, 6–34% sternal wound healing occurred by continuous NPWT for 1–2 weeks, and maximum healing at 46% after 2.5 weeks of NPWT were observed. Conclusions Better wound healing was achieved in the NPWT group in comparison to conventional dressings alone. However, suboptimal sternal wound healing by NPWT alone was observed. Removal of sternal wire may improve the effectiveness of NPWT. Successful tertiary closure after NPWT among subjects supports the important bridging role of NPWT in sternal wound healing. Factors causing stagnant sternal wound healing by NPWT alone are discussed.

Short Report: The Moisture Balance with Aloe Vera Gel in Diabetic Wound Healing

2018 ◽  
Vol 1 (1) ◽  
pp. 21-23
Author(s):  
Fahrianto Selamet ◽  
Andi Mayasari Usman ◽  
Rian Adi Pamungkas
Keyword(s):  
Diabetes Mellitus ◽  
Wound Healing ◽  
Wound Care ◽  
Aloe Vera ◽  
Foot Ulcer ◽  
Diabetic Foot Ulcer ◽  
Short Report ◽  
Bacterial Reduction ◽  
Moisture Balance ◽  
Patients With Diabetes

Diabetic foot ulcer (DF) is a chronic complication of diabetes mellitus (DM), which impact on the morbidity, mortality and quality of patients’ lives.Of those patients with diabetes mellitus, approximately 15% to 25% developed to the foot ulcer. Beside has the infection and debridement of devitalized tissue downloading; the moisture imbalance becomes the factors of recalcitrant to healing. Moist wound healing is often contraindicated to the non-healable wounds. While wound care involves the debridement, bacterial reduction, and moisture balance in order to achieve the good granulation of the tissue development and adequate blood supply.

Neonatal Intravenous Extravasation Injuries: Evaluation of a Wound Care Protocol

2006 ◽  
Vol 25 (1) ◽  
pp. 13-19 ◽  
Author(s):  
Doris Sawatzky-Dickson ◽  
Karen Bodnaryk
Keyword(s):  
Wound Healing ◽  
Birth Weight ◽  
Wound Infection ◽  
Gestational Age ◽  
Wound Care ◽  
Systemic Infection ◽  
Coagulase Negative Staphylococcus ◽  
Evidence Based ◽  
Infection Rates ◽  
Care Protocol

Purpose:To evaluate an evidence-based wound protocol for intravenous extravasation injuries in neonates.Sample:Nine newborns with intravenous extravasation injuries. Birth weight: 582–4,404 gm, gestational age: 24–40 weeks.Results:Five wounds were colonized with coagulase-negative Staphylococcus species, two with diphtheroids, three with Enterococcus. There was no evidence of wound infection or systemic infection. Rates of wound healing ranged from one to six weeks.

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