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Silicone and wounds

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https://www.readbyqxmd.com/read/29765486/use-of-hyaluronic-acid-based-biological-bilaminar-matrix-in-wound-bed-preparation-a-case-series
#1
Richard Simman, Walid Mari, Sara Younes, Michael Wilson
Objective: Hyalomatrix, a matrix that consists of esterified hyaluronic acid, covered with a removable, semipermeable silicone top layer, was used to generate granulation tissue in a series of 12 serious, surgical wounds of different etiologies. Methods: Many defects showed exposed muscle, tendons, and/or bone. After thorough debridement, the matrix was applied, in a number of cases, combined with negative pressure wound therapy. Results: All wounds developed granulation tissue in and on top of the matrix. Nine wounds were then closed with a split skin autograft...
2018: Eplasty
https://www.readbyqxmd.com/read/29748983/hyaluronic-acid-modified-porous-silicon-films-for-the-electrochemical-sensing-of-bacterial-hyaluronidase
#2
Katrin-Stephanie Tücking, Roshan B Vasani, Alex A Cavallaro, Nicolas H Voelcker, Holger Schönherr, Beatriz Prieto-Simon
The development of enzyme-responsive hyaluronic acid methacrylate (HYAMA)-coated porous silicon (pSi) films and their application in electrochemical diagnostic devices for the in situ detection of the enzyme hyaluronidase (hyal), which is secreted by Staphylococcus aureus (S. aureus) bacteria, are reported. The approach relies on a HYAMA-pSi electrode made of thermally hydrocarbonized pSi (pSi-THC) that is impregnated with crosslinked HYAMA/polyethylene glycol diacrylate (PEGDA) hydrogels. The enzymatic degradation of HYAMA by bacterial hyal is monitored by differential pulse voltammetry (DPV) utilizing pSi-THC as a working electrode and ferro/ferricyanide (FF) as external redox probe...
May 11, 2018: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/29685051/sutureless-biplanar-closure-of-leaking-wounds-in-micro-incision-vitreous-surgery-a-novel-technique
#3
Nikoloz Labauri, Tekla Mamageishvili, Keti Tsomaia, Mikheil Omiadze
AIM: To describe a novel technique for sutureless hermetic closure of leaking scleral wounds in micro-incision vitreous surgery. METHODS: This study is a two-centre, non-comparative, interventional case series. We studied 1240 scleral incisions on 870 eyes using different gauges (20, 23, 25) to evaluate the effectiveness of a new technique to seal scleral wounds without sutures. If wounds were found leaking after removing the trocar, we used the same trocar (or microvitreoretinal) blade to make an adjacent trans-scleral entry in the same direction as the main incision to access its internal flap supporting it from inside...
April 1, 2018: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/29665026/anhydrous-polymer-based-coating-with-sustainable-controlled-release-functionality-for-facile-efficacious-impregnation-and-delivery-of-antimicrobial-peptides
#4
Kaiyang Lim, Rathi Saravanan, Kian Long Kelvin Chong, Hwee Mian Sharon Goh, Ray Rong Yuan Chua, Paul Anantharajah Tambyah, Matthew Wook Chang, Kimberly A Kline, Susanna Su Jan Leong
Anhydrous polymers are actively explored as alternative materials to overcome limitations of conventional hydrogel-based antibacterial coating. However, the requirement for strong organic solvent in polymerization reactions often necessitates extra protection steps for encapsulation of target biomolecules, lowering encapsulation efficiency and increasing process complexity. This study reports a novel coating strategy that allows direct solvation and encapsulation of antimicrobial peptides (HHC36) into anhydrous polycaprolactone (PCL) polymer-based dual layer coating...
April 17, 2018: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29664613/advanced-materials-and-devices-for-bioresorbable-electronics
#5
Seung-Kyun Kang, Jahyun Koo, Yoon Kyeung Lee, John A Rogers
Recent advances in materials chemistry establish the foundations for unusual classes of electronic systems, characterized by their ability to fully or partially dissolve, disintegrate, or otherwise physically or chemically decompose in a controlled fashion after some defined period of stable operation. Such types of "transient" technologies may enable consumer gadgets that minimize waste streams associated with disposal, implantable sensors that disappear harmlessly in the body, and hardware-secure platforms that prevent unwanted recovery of sensitive data...
April 17, 2018: Accounts of Chemical Research
https://www.readbyqxmd.com/read/29650377/articular-surgery-of-the-ischemic-hand-in-systemic-scleroderma-a-vascular-basis-for-arthrodesis-and-arthroplasty
#6
REVIEW
Charles P Melone, Erez Dayan
Hallmark deformities of systemic scleroderma are early onset and progressively disabling flexion contractures of the proximal interphalangeal (PIP) joints often in conjunction with extension or, less frequently, flexion contractures of the metacarpophalangeal (MCP) joints. Although surgical correction is generally recommended, a prevailing reluctance for operative treatment exists owing to the inherent ischemia of the disease with its potentially compromised healing capacity. Nonetheless, with recognition and preservation of the tenuous but well-defined and constant periarticular vascular networks of the PIP and MCP joints, articular reconstruction with uncomplicated wound healing can prove consistently successful for patients with scleroderma...
April 9, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29643046/-efficacy-of-dermal-scaffold-for-promoting-repair-of-acute-full-thickness-skin-defects-in-pigs
#7
Xue-Wen Qiu, Jia-Han Wang
OBJECTIVE: To investigate the efficacy of Lando® dermal scaffold for promoting repair of acute full-thickness skin defects in pigs and explore the possible mechanism. METHODS: Three 5 cm×5 cm full-thickness skin defects were created on the left dorsal skin (control group) and another 3 on the right dorsal skin (treatment group) of each of 6 Tibetan pigs. The wounds in the treatment group were covered with a bilayer artificial skin (Lando) and the control wounds with vaseline gauze...
March 20, 2018: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/29630078/applications-of-zeolites-in-biotechnology-and-medicine-a-review
#8
REVIEW
Lucie Bacakova, Marta Vandrovcova, Ivana Kopova, Ivan Jirka
Zeolites are microporous tectosilicates of natural or synthetic origin, which have been extensively used in various technological applications, e.g. as catalysts and as molecular sieves, for separating and sorting various molecules, for water and air purification, including removal of radioactive contaminants, for harvesting waste heat and solar heat energy, for adsorption refrigeration, as detergents, etc. These applications of zeolites were typically related with their porous character, their high adsorption capacity, and their ion exchange properties...
April 9, 2018: Biomaterials Science
https://www.readbyqxmd.com/read/29608162/a-novel-in-vitro-wound-healing-assay-to-evaluate-cell-migration
#9
Floriana Cappiello, Bruno Casciaro, Maria Luisa Mangoni
The aim of this work is to show a novel method to evaluate the ability of some immunomodulatory molecules, such as antimicrobial peptides (AMPs), to stimulate cell migration. Importantly, cell migration is a rate-limiting event during the wound-healing process to re-establish the integrity and normal function of tissue layers after injury. The advantage of this method over the classical assay, which is based on a manually made scratch in a cell monolayer, is the usage of special silicone culture inserts providing two compartments to create a cell-free pseudo-wound field with a well-defined width (500 μm)...
March 17, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29600578/successful-treatment-of-enteroatmospheric-fistulas-in-combination-with-negative-pressure-wound-therapy-experience-on-3-cases-and-literature-review
#10
Ulrich Wirth, Bernhard W Renz, Dorian Andrade, Tobias S Schiergens, Helmut Arbogast, Joachim Andrassy, Jens Werner
Enteroatmospheric fistulas (EAF) are rare but challenging and morbid complications of abdominal surgery and require time- as well as resource-consuming management. Furthermore, they severely affect patients' quality of life. Several treatment modalities for EAF management are described in the literature. We describe 3 consecutive cases of EAF treatment by employing negative pressure wound therapy (NPWT) along with either a special silicone fistula adapter or a Silo-Vac-like system in another case to isolate the fistula from the remaining abdominal wound...
March 30, 2018: International Wound Journal
https://www.readbyqxmd.com/read/29590523/long-term-follow-up-comparison-of-two-different-bi-layer-dermal-substitutes-in-tissue-regeneration-clinical-outcomes-and-histological-findings
#11
Barbara De Angelis, Fabrizio Orlandi, Margarida Fernandes Lopes Morais D'Autilio, Maria G Scioli, Augusto Orlandi, Valerio Cervelli, Pietro Gentile
Double layer dermal substitute (DS) consist of a 3-dimensional collagen structures and a superficial silicon layer that are positioned within the defect provide to promote tissue regeneration in skin wounds. DS often have unique physical characteristics due to differences in manufacturing techniques. The aim of this study is the clinical and histological comparison of Nevelia and Integra double layer DSs in patients with post-traumatic injury wounds. Thirty patients with post-traumatic wounds localised on the inferior limbs were randomised in 2 groups Nevelia or Integra, followed by autologous dermal epidermal graft (DEG)...
March 28, 2018: International Wound Journal
https://www.readbyqxmd.com/read/29590306/novel-proteomic-assay-of-breast-implants-reveals-proteins-with-significant-binding-differences-implications-for-surface-coating-and-biocompatibility
#12
Simon Patrick Barr, Ernie W Hill, Ardeshir Bayat
Background: Silicone elastomer, a ubiquitous biomaterial and main constituent of breast implants, has been used for breast augmentation and reconstruction for over 50 years. Breast implants have direct local and purported systemic effects on normal tissue homeostasis dictated by the chemical and physical presence of the implant. Objectives: Protein adsorption has been demonstrated to be a key driver of local reactions to silicone. We sought to develop an assay and identify the proteins that coat implants during breast implantation...
March 26, 2018: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29577778/management-of-postfasciotomy-wounds-and-skin-defects-following-complex-vascular-trauma-to-the-extremities-using-the-external-tissue-extender-system
#13
Christos D Karkos, Ioakeim Papoutsis, Ioakeim T Giagtzidis, Ioannis Pliatsios, Maria-Aphroditi Mitka, Konstantinos O Papazoglou, Apostolos G Kambaroudis
Management of large postfasciotomy wounds and/or skin and soft tissue defects after major vascular trauma to the extremities can be challenging. The External Tissue Extender (Blomqvist; ETE), a skin-stretching device, which consists of silicone tapes and plastic stoppers, approximates wound margins and facilitates delayed primary closure. We describe our experience with the use of ETE in 5 patients (4 males) with a total of 8 wounds (7 postfasciotomy, 1 soft tissue defect) over the past 12 years. The mean patient age was 32 (range 17-61) years...
March 1, 2018: International Journal of Lower Extremity Wounds
https://www.readbyqxmd.com/read/29549811/surgical-results-of-cranioplasty-using-three-dimensional-printing-technology
#14
Cheng-Hsin Cheng, Hao-Yu Chuang, Hung-Lin Lin, Chun-Lin Liu, Chun-Hsu Yao
OBJECT: The aim of this research was to evaluate the surgical outcome of a new three-dimensional printing (3DP) technique using prefabrication molds and polymethyl methacrylate (PMMA). PATIENTS AND METHODS: The study included 10 patients with large skull defects (>100 cm2 ) who underwent cranioplasty. The causes of the skull defects were trauma (6), bone resorption (2), tumor (1), and infection (1). Before the operation, computed tomography (CT) scans were used to create a virtual plan, and these were then converted to 3-dimensional (3-D) images...
March 9, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29527248/use-of-hyaluronic-acid-based-biological-bilaminar-matrix-in-wound-bed-preparation-a-case-series
#15
Richard Simman, Walid Mari, Sara Younes, Michael Wilson
Objectives: To analyze the efficacy of a hyaluronic acid--based matrix in the treatment of lesions where the extracellular matrix was lost. Methods: Prospective, noncomparative clinical case series. Results: Twelve patients with 12 serious surgical wounds of different etiologies participated in this project. Many defects showed exposed muscle, tendons, and/or bone. After thorough debridement, a hyaluronic acid--based matrix, with a removable, semipermeable silicone top layer, was applied for the purpose of generating a neodermis...
2018: Eplasty
https://www.readbyqxmd.com/read/29521640/a-randomized-controlled-study-evaluating-the-clinical-benefits-of-a-cellulose-acetate-mesh-coated-with-a-soft-silicone-in-the-management-of-acute-wounds
#16
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
https://www.readbyqxmd.com/read/29520501/feasibility-study-of-contralateral-risk-reducing-mastectomy-with-breast-reconstruction-for-breast-cancer-patients-with-brca-mutations-in-japan
#17
Akiyo Yoshimura, Seiko Okumura, Masataka Sawaki, Masaya Hattori, Junko Ishiguro, Yayoi Adachi, Haruru Kotani, Naomi Gondo, Ayumi Kataoka, Madoka Iwase, Sakura Onishi, Kayoko Sugino, Mitsuo Terada, Nanae Horisawa, Makiko Mori, Nobue Takaiso, Ikuo Hyodo, Hiroji Iwata
BACKGROUND: Contralateral risk-reducing mastectomy (CRRM) for breast cancer patients with BRCA mutations has been reported to not only reduce breast cancer incidence but also to improve survival. The National Comprehensive Cancer Network guidelines recommend providing CRRM to women with BRCA mutations who desire CRRM after risk-reduction counseling. However, in Japan, CRRM cannot be performed generally because it is not covered by health insurance. Thus, we conducted a feasibility study to confirm the safety of CRRM...
March 8, 2018: Breast Cancer: the Journal of the Japanese Breast Cancer Society
https://www.readbyqxmd.com/read/29514524/randomised-comparison-of-silicone-gel-and-onion-extract-gel-for-post-surgical-scars
#18
Taejong Song, Kye Hyun Kim, Kyo Won Lee
To compare the efficacy of silicone gel and onion extract gel on new surgical wounds, we performed a randomised controlled trial evaluating the appearance of the laparoscopic surgical scars of 60 subjects after 12 weeks of two times daily application of either silicone gel or onion extract gel. Objective scar assessment by the Vancouver Scar Scale (VSS) and the Image Panel Scale (IPS) and subjective scar assessment by the Body Image Scale (BIS) and Cosmetic Scale (CS) were performed after 12 weeks of treatment...
March 7, 2018: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/29510800/microneedles-as-enhancer-of-drug-absorption-through-the-skin-and-applications-in-medicine-and-cosmetology
#19
Pablo Serrano-Castañeda, Jose Juan Escobar-Chavez, Isabel Marlen Rodriguez-Cruz, Luz Maria Melgoza, Jessica Martinez-Hernandez
The microneedles technology has found applications in many health-related fields. For example, their application in drugs and vaccines delivery as well, as the determination of biomarkers, has been reported. They also have a place in the dermatology and cosmetic areas such as the treatment of wounds from burns, scars, acne, depigmentation, and alopecia will be shown. Microneedles are used in therapeutic applications and are manufactured using materials such as metal (steel, titanium, nickel), polymer (oly-glycolic acid (PGA), poly-lactide-co-glycolide acid (PLGA), poly-L-lactic acid (PLA), chitosan), glass, silicon, ceramic, carbohydrates (trehalose, sucrose, mannitol)...
2018: Journal of Pharmacy & Pharmaceutical Sciences: a Publication of the Canadian Society for Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29475792/influence-of-dressing-application-time-after-breast-augmentation-on-cutaneous-colonization-a-randomized-clinical-trial
#20
D A Mendes, D F Veiga, J Veiga-Filho, A B A T Loyola, L F Paiva, N F Novo, M Sabino-Neto, L M Ferreira
Concepts regarding the best way to treat a surgical wound vary, in literature, ranging from no dressing use to dressing maintenance for 24 to 48 hours or until suture removal. This study aimed to evaluate the influence of the length of dressing maintenance after breast augmentation with implants on cutaneous colonization and surgical site infection. This is a two-arm, parallel group, randomized clinical trial. Eighty patients who were candidates for augmentation mammoplasty with silicone implants were randomly allocated to two groups, in which the dressing was removed on postoperative day 1 (group A, n = 40) or postoperative day 6 (group B, n = 40)...
February 20, 2018: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
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