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Advanced Wound Dressing

Kamyar Khoshnevisan, Hassan Maleki, Hadi Samadian, Shadab Shahsavari, Mohammad Hossein Sarrafzadeh, Bagher Larijani, Farid Abedin Dorkoosh, Vahid Haghpanah, Mohammad Reza Khorramizadeh
Electrospinning process of nanofibers specially derivatives of cellulose presents high behest for developing several kinds of novel drug delivery systems (DDSs) due to their specific characteristics, the simplicity, beneficial and impressive top-down fabricating procedure. Moreover, the novel techniques of therapeutic agents for entrapment into core-shell nanofibers including single, coaxial and triaxial applied for DDSs. Recently, biodegradable polymers including derivatives of cellulose, hybrid materials, artificial and natural polymers have been remarkably considered...
October 15, 2018: Carbohydrate Polymers
Önder I Kılıçoğlu, Mehmet Demirel, Şamil Aktaş
Although there are various types of therapeutic footwear currently used to treat diabetic foot ulcers (DFUs), recent literature has enforced the concept that total-contact casts are the benchmark.Besides conventional clinical tests and imaging modalities, advanced MRI techniques and high-sensitivity nuclear medicine modalities present several advantages for the investigation of diabetic foot problems.The currently accepted principles of DFU care are rigorous debridement followed by modern wound dressings to provide a moist wound environment...
May 2018: EFORT open reviews
Georg M Guebitz, Gibson S Nyanhongo
Hydrogels are 3D hydrophilic polymer networks that absorb and hold huge amounts of water. Although hydrogels have traditionally been synthesized using chemical and physical methods, rapid developments in enzyme technology that, like chemical-based methods, enable the formation of stable covalent bonds are fast emerging as alternative 'green catalyst' tools. Enzymes show great potential for the synthesis of complex multifunctional wound dressing hydrogels (WDHs) ex situ and in situ as well as in acting as interactive molecules to promote the wound healing process...
June 15, 2018: Trends in Biotechnology
Geeta Sood, Cynthia Argani, Khalil G Ghanem, Trish M Perl, Jeanne S Sheffield
PURPOSE OF REVIEW: Cesarean sections are common surgical procedures performed in a healthy population and are unique because of a relatively high rate of postoperative infection. There have been many important advances in understanding the pathogenesis of infection and evaluation of interventions to prevent post cesarean section infections in the last few years. Our purpose in this review is to analyze these new data, discuss unanswered questions, and propose changes in standard of care...
August 2018: Current Opinion in Infectious Diseases
Elina S Chermnykh, Ekaterina V Kiseleva, Olga S Rogovaya, Aleksandra L Rippa, Andrey V Vasiliev, Ekaterina A Vorotelyak
Despite recent advances in bioengineered therapies, wound healing remains a serious clinical problem. In acute full-thickness wounds, it is desirable to replace both the damaged dermis and epidermis in a single procedure. This approach requires appropriate properties of tissue-engineered dressings to support simultaneous regenerative processes in the dermis and epidermis while they are temporally separated in the natural wound healing process. In this study, a collagen-based scaffold inhabited by skin cells was employed...
May 30, 2018: Histology and Histopathology
Zhiyuan Jiang, Xiaobo You, Zhen Cai, Quan Liu, Kuangyun Tang, Han Zhang, Wei Cui, Zaihong Chen, Shan Luo
Objective: To investigate the effectiveness of local skin flaps such as V-Y advancement flap (V-Y plasty) and transposition flap (Z plasty) in the adjustment of reconstructed nasal alars at second stage. Methods: Between June 2012 and January 2017, 14 cases of reconstructed nasal alars by nasolabial flap or expanded forehead flap were recruited. There were 9 males and 5 females with an average age of 34.8 years (range, 18-52 years). The interval time between one- and two-stage operations was 1-12 months (mean, 3 months)...
January 1, 2018: Chinese Journal of Reparative and Reconstructive Surgery
Z H Luo, J P Zhang
Bacterial cellulose (BC) is a promising material for wound dressing due to its predominant water binding capacity, mechanical property, biodegradability, and histocompatibility. Whereas BC itself exhibits no antimicrobial activity. To gain antimicrobial activity, several kinds of antibacterial agents have been introduced into BC. However, all of the antibacterial composite dressings are still in the stage of experimental research. In this paper, the types, antibacterial mechanism, and shortcomings of antibacterial composite dressings based on BC are summarized, in order to make prospects of the research trends of antibacterial composite dressings based on BC in future...
May 20, 2018: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
Shu-Ju Lu, Shiao-Pei Wang
Acute respiratory distress syndrome (ARDS) is a life-threatening disease, as acute inflammation in the lungs typically leads to hypoxia and symptoms of dyspnea. The treatment modalities of ARDS include mechanical ventilation, corticosteroid, extracorporeal membranous oxygenation, inhaled nitrogen oxide, and the prone position. Among these, the prone position is supported by evidence showing significantly reduced mortality in patients that adopt this modality. Lying in the prone position reduces atelectatic lung volumes by recruitment of dependent parts and facilitates normal regulation of alveolar ventilation, giving better-matched ventilation perfusion and, thus, improved oxygenation...
June 2018: Hu Li za Zhi the Journal of Nursing
Mehdi Farokhi, Fatemeh Mottaghitalab, Yousef Fatahi, Ali Khademhosseini, David L Kaplan
Recently, biomimetic wound dressings were introduced as potential replacements for treating skin injuries. Although there are some clinically available skin replacements, the range of wound types and locations necessitates a broader range of options for the clinic. Natural polymeric-based dressings are of central interest in this area due to their outstanding biocompatibility, biodegradability, low toxicity, and non-allergenic nature. Among them, silk fibroin (SF) has exceptional characteristics as a wound dressing...
May 12, 2018: Trends in Biotechnology
Matthew S Brown, Brandon Ashley, Ahyeon Koh
Chronic non-healing wounds challenge tissue regeneration and impair infection regulation for patients afflicted with this condition. Next generation wound care technology capable of in situ physiological surveillance which can diagnose wound parameters, treat various chronic wound symptoms, and reduce infection at the wound noninvasively with the use of a closed loop therapeutic system would provide patients with an improved standard of care and an accelerated wound repair mechanism. The indicating biomarkers specific to chronic wounds include blood pressure, temperature, oxygen, pH, lactate, glucose, interleukin-6 (IL-6), and infection status...
2018: Frontiers in Bioengineering and Biotechnology
Julia L Shamshina, Oleksandra Zavgorodnya, Robin D Rogers
Chitin isolated through microwave-assisted dissolution using ionic liquids is a high molecular weight (MW) polymer that can be manufactured into materials of different architectures (e.g., fibers, films, microspheres, nanostructured materials) to be used as wound care dressings, drug delivery devices, scaffolds, etc. However, because of differences from traditional isolation methods and, thus, differences in polymer length and degree of deacetylation, it could exhibit bio-related properties that differ from those of traditionally 'pulped' chitin...
May 10, 2018: Advances in Biochemical Engineering/biotechnology
Catherine A Fiala, Linda I Abbott, Cheryl D Carter, Stephen L Hillis, Jessica S Wolf, Meghan Schuster, Rachel Dulski, Elizabeth A Grice, Barbara A Rakel, Sue E Gardner
AIM: The aim of this study is to: (a) develop and evaluate a model to predict severe pain during wound care procedures (WCPs) so that high-risk patients can be targeted for specialized dressings and preventive pain control; and (b) identify biological factors associated with severe pain during WCPs so that novel pain control strategies can be developed. BACKGROUND: Wound care procedures such as dressing changes can cause moderate to severe pain in 74% of patients, with nearly half (36%) of all patients experiencing severe pain (rated as 8-10 on a 10-point numeric rating scale) during dressing change...
May 7, 2018: Journal of Advanced Nursing
Sathish Sundar Dhilip Kumar, Naresh Kumar Rajendran, Nicolette Nadene Houreld, Heidi Abrahamse
Silver nanoparticles (AgNPs) are classified as metal-based nanoparticles and have gained considerable attention amongst researchers in wound healing applications, owing to their physicochemical and biological properties. Biopolymers are abundantly available from natural sources and are used in numerous applications in pharmaceutical sciences and medicine. Silver nanoparticles and biopolymer-based biomaterials (AgNP-BMs) are non-cytotoxic and safe for patients in wound care management. The unique intrinsic features of AgNP-BMs promote wound healing and effectively control the growth of microorganisms at the wound site, and this strategy plays an important role in the treatment of both acute and chronic wounds...
August 2018: International Journal of Biological Macromolecules
Russell Urie, Deepanjan Ghosh, Inam Ridha, Kaushal Rege
Inorganic nanomaterials have witnessed significant advances in areas of medicine including cancer therapy, imaging, and drug delivery, but their use in soft tissue repair and regeneration is in its infancy. Metallic, ceramic, and carbon allotrope nanoparticles have shown promise in facilitating tissue repair and regeneration. Inorganic nanomaterials have been employed to improve stem cell engraftment in cellular therapy, material mechanical stability in tissue repair, electrical conductivity in nerve and cardiac regeneration, adhesion strength in tissue approximation, and antibacterial capacity in wound dressings...
June 4, 2018: Annual Review of Biomedical Engineering
Tony T Yuan, Ann Marie DiGeorge Foushee, Monica C Johnson, Angela R Jockheck-Clark, Jonathan M Stahl
Normal wound healing is a highly complex process that requires the interplay of various growth factors and cell types. Despite advancements in biomaterials, only a few bioactive wound dressings reach the clinical setting. The purpose of this research was to explore the feasibility of electrospinning a novel nanofibrous chitosan (CS)-fibrinogen (Fb) scaffold capable of sustained release of platelet-derived growth factor (PDGF) for the promotion of fibroblast migration and wound healing. CS-Fb scaffolds were successfully electrospun using a dual-spinneret electrospinner and directly evaluated for their physical, chemical, and biological characteristics...
April 2, 2018: Nanoscale Research Letters
Keiichi Motoyama, Taishi Higashi, Maiko K Okajima, Tatsuo Kaneko, Hidetoshi Arima
 A wound dressing is one of the essential approaches to prevent further harm to cutaneous wounds as well as to promote wound healing. Therefore, to achieve ideal wound healing, the development of advanced dressing materials is necessary. Sacran, a novel megamolecular polysaccharide derived from the cyanobacterium Aphanothece sacrum, has a very high molecular weight that exceeds 107 g/mol and water-superabsorbent capacity. Recently, we demonstrated that sacran exerts anti-inflammatory activity by ameliorating the skin barrier function in patients with atopic dermatitis...
2018: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
Annie Price, Natalie M Stone, Keith G Harding
Allergic contact dermatitis commonly affects patients with chronic venous leg ulcers and can contribute to impaired wound healing. Many allergens have been identified, and despite the use of advanced dressings, the incidence of allergy has remained high. We discuss an unusual presentation of allergic contact dermatitis in a patient with a chronic wound. The patient's history was consistent with a recurrent venous leg ulcer, but on this occasion, the wound continued to deteriorate despite optimal treatment. This prompted further investigation, which included patch testing...
March 30, 2018: International Wound Journal
Pei-Ying Yeh, Hsiao-Ping Chen, Jing-Yi Wu
Simultaneous pancreas-kidney (SPK) transplantation is the primary surgical treatment for type I diabetes mellitus with end-stage renal disease. However, this transplant surgery has a high-risk of surgical complications, including duodenal anastomotic leakage, which may lead to pancreas transplantation failure if the leakage worsens. This case report describes a patient who suffered from duodenal anastomotic leakage after SPK transplantation. The digestive enzymes eroded the wound and skin around the wound, resulting in periwound moisture-associated dermatitis...
April 2018: Hu Li za Zhi the Journal of Nursing
Edwin Tapiwa Chamanga
Chronic wounds are defined as those that have failed to heal after three months. There are various intrinsic and extrinsic factors that may result in the development of chronic wounds, including comorbidities such as diabetes mellitus and venous insufficiency, and lifestyle factors such as obesity, alcohol consumption and smoking. Chronic wounds represent a significant burden on healthcare resources and can have a negative effect on patients' quality of life. This article discusses the assessment and treatment of non-healing chronic wounds...
March 14, 2018: Nursing Standard
Anne-Claire Pierrefeu-Lagrange, Karine Mari, Caroline Hoss, Breda Cullen, Lorraine Nisbet
INTRODUCTION: Dressings are a mainstay for wound management; however, dressing adherence to the wound or periwound area can cause pain and trauma at removal. Dressing-related trauma includes skin reactions, adherence to the wound, and skin stripping. The development of atraumatic wound contact layer dressings has been a major advancement in reducing trauma. OBJECTIVE: This study compares the benefits of a cellulose acetate mesh (CAM) coated with soft silicone versus a flexible polyamide net (FPN) coated with soft silicone...
April 2018: Wounds: a Compendium of Clinical Research and Practice
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