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Silicone and wounds

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https://www.readbyqxmd.com/read/28709910/silicon-zinc-glycerol-hydrogel-a-potential-immunotropic-agent-for-topical-application
#1
Tat'yana G Khonina, Maria V Ivanenko, Oleg N Chupakhin, Alexander P Safronov, Ekaterina A Bogdanova, Maxim S Karabanalov, Vasily V Permikin, Leonid P Larionov, Lyudmila I Drozdova
Nanoparticles synthesized using sol-gel method are promising agents for biomedical applications, in particular for the therapy and diagnosis of various diseases. Using silicon and zinc glycerolates as biocompatible precursors we synthesized by the sol-gel method a new bioactive silicon-zinc-containing glycerohydrogel combining the positive pharmacological properties of the precursors. In the present work the structural features of silicon-zinc-containing glycerohydrogel and its immunotropic properties were studied...
July 11, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28700206/drug-porous-silicon-dual-luminescent-system-for-monitoring-and-inhibition-of-wound-infection
#2
Xisheng Chen, Fangjie Wo, Yao Jin, Jie Tan, Yan Lai, Jianmin Wu
Wound monitoring and curing is of great importance in biomedical research. This work created a smart bandage that can simultaneously monitor and inhibit wound infection. The main components of the smart bandage are luminescent porous silicon (LuPSi) particles loaded with ciprofloxacin (CIP). This dual luminescent system can undergo accelerated fluorescent color change from red to blue upon the stimulation of reactive oxygen species (ROS) and elevated pH, which are main biomarkers in the infected wound. The mechanism behind the chemical-triggered fluorescent color change was studied in detail...
July 17, 2017: ACS Nano
https://www.readbyqxmd.com/read/28686663/in-vitro-release-pharmacokinetics-of-amikacin-teicoplanin-and-polyhexanide-in-a-platelet-rich-fibrin-layer-prf-a-laboratory-evaluation-of-a-modern-autologous-wound-treatment
#3
Daniela Knafl, Florian Thalhammer, Matthias G Vossen
OBJECTIVES: Platelet rich fibrin (PRF) is an autologous fibrin glue, produced from patients' blood, which, besides intraoperative use, has applications in the treatment of infected wounds. The combination with antimicrobial agents results in a prolonged antibacterial effect allowing for wound dressing change intervals of seven days even in infected wounds. The aim of this study was to evaluate release kinetics of amikacin, teicoplanin or polyhexanide from a PRF-layer. METHODS: PRF mixed with teicoplanin, amikacin or polyhexanide was sprayed on a silicon gauze patch and put on a colombia agar with bacteria with known minimal inhibitory concentration (MIC) and incubated for 24 hours and afterwards transferred to another agar with the same bacterial strain...
2017: PloS One
https://www.readbyqxmd.com/read/28681666/the-effects-of-colchicine-impregnated-oxidized-regenerated-cellulose-on-capsular-contracture
#4
Burcin Acuner, Nesrin Tan Baser, Gurcan Aslan, Ahmet Terzioglu, Muzaffer Caydere, Huseyın Ustun, Metin Görgü
Capsular contracture is the most common complication of breast augmentation. Oxidized regenerated cellulose can be used as a matrix for drug transport. Colchicine is an antimitotic drug that interferes with various steps of wound healing. The aim of this study was to evaluate the effects of oxidized regenerated cellulose alone or in combination with colchicine on capsular contracture. Twenty-one adult female Wistar-Albino rats were divided into 3 groups. In group 1 silicone blocks only, in group 2 oxidized regenerated cellulose-wrapped silicone blocks, and in group 3 colchicine-impregnated oxidized regenerated cellulose-wrapped silicone blocks were inserted in the dorsal region...
June 1, 2017: Surgical Innovation
https://www.readbyqxmd.com/read/28635048/prophylactic-chorioretinectomy-for-eye-injuries-with-high-proliferative-vitreoretinopathy-risk
#5
Ferenc Kuhn, Wolfgang Schrader
With its incidence exceeding 60%, proliferative vitreoretinopathy (PVR) remains the most important pathology responsible for loss of vision, even the eyeball, after certain types of severe trauma. In this article, we present results obtained using our novel surgical technique, prophylactic chorioretinectomy (PCR), to prevent the development of PVR. Data on severely injured eyes at high risk for PVR [rupture, posterior laceration, deep-impact intraocular foreign body (IOFB) trauma, perforating injury] were collected prospectively...
June 21, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28631912/-results-of-urethral-reconstruction-in-adults-after-multiple-hypospadias-repairs
#6
S I Gamidov, M G Shneiderman, D Yu Pushkar, A O Vasil'ev, A V Govorov, R I Ovchinnikov, A Yu Popova, R D Dusmukhamedov
AIM: To improve treatment results in patients after multiple hypospadias repairs by optimizing the postoperative management. MATERIALS AND METHODS: Eighty-two patients (mean age 48.1+/-15.3 years) with urethral strictures secondary to failed hypospadias repairs underwent staged graft urethroplasty using oral mucosa (cheek, lip, tongue) as a grafting material. In 62 patients, at the end of surgery the bladder was drained with a standard Foley catheter. In twenty patients the bladder was drained with a modified silicone urethral catheter, which had an additional channel for delivering drugs and removing the urethral wound effluent, and a second additional channel for inflating a balloon fixed to the catheter tube at different parts of the catheter...
June 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28604545/gluteal-augmentation-with-intramuscular-implants-in-patients-with-human-immunodeficiency-virus-with-lipoatrophy-related-to-the-use-of-antiretroviral-therapy
#7
Guilherme Augusto Andrade, Pedro Soler Coltro, Mário Eduardo Barros, Bruno Francisco Müller Neto, Renan Victor Lima, Jayme Adriano Farina
INTRODUCTION: Lipodystrophy syndrome associated with highly active antiretroviral therapy (HAART) may lead to low self-esteem and poor compliance with the drug treatment on patients infected with human immunodeficiency virus (HIV), which is a matter of concern for the health system. The aim of this study was to evaluate patients with HIV submitted to gluteal augmentation with intramuscular silicone implants to correct gluteal lipoatrophy related to the use of HAART. METHODS: This is a retrospective evaluation of 10 patients submitted to gluteal augmentation with intramuscular silicone implant for correction of gluteal lipoatrophy related to the use of HAART, operated between 2012 and 2015...
June 9, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28598760/the-use-of-modern-dressings-in-managing-split-thickness-skin-graft-donor-sites-a-single-centre-randomised-controlled-trial
#8
M Kazanavičius, A Cepas, V Kolaityte, R Simoliuniene, R Rimdeika
OBJECTIVE: To identify the most appropriate, most suitable and most efficient dressing for split-thickness skin graft (STSG) donor sites. Comparing the wound healing rate, pain severity and duration, as well as the dressing change frequency in four randomised patient groups. METHODS: A single-centre non-blinded randomised controlled trial was carried out during 2010-2014. All patients treated for skin defects/lesions (due to burns, trauma or ulcers) using STSG were included in the study...
June 2, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28594320/silver-containing-foam-dressings-with-safetac-a-review-of-the-scientific-and-clinical-data
#9
Phil Davies, Sara McCarty, Kristina Hamberg
Background Topical antimicrobials, such as silver dressings, are progressively being used alongside systemic antibiotics to provide adjunctive, antimicrobial therapy to wounds that are clinically infected or at risk of infection. To help improve wound management, dressings that use Safetac soft silicone technology in combination with a silver-impregnated foam dressing material were developed by Mölnlycke Health Care (Gothenburg, Sweden). The range comprises Mepilex Ag, Mepilex Border Ag and Mepilex Transfer Ag...
June 1, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28570253/review-of-silicone-gel-sheeting-and-silicone-gel-for-the-prevention-of-hypertrophic-scars-and-keloids
#10
Kuei-Chang Hsu, Chih-Wei Luan, Yi-Wen Tsai
BACKGROUND: Keloids and hypertrophic scars are fibroproliferative disorders of dermal tissue after skin injury. Many clinical control studies have reported evidence that silicone gel is effective in preventing and alleviating hypertrophic scarring. Whether silicone gel sheeting prevents hypertrophic scars or keloids requires clear evidence of its clinical effectiveness. OBJECTIVE: This review investigated the effectiveness of silicone gel and silicone gel sheeting for the prevention of hypertrophic or keloid scarring in patients with newly healed wounds...
May 2017: Wounds: a Compendium of Clinical Research and Practice
https://www.readbyqxmd.com/read/28549710/complication-rates-observed-in-silicone-and-polyurethane-catheters-of-totally-implanted-central-venous-access-devices-implanted-in-the-upper-arm
#11
Jasmin D Busch, Maren Vens, Catherine Mahler, Jochen Herrmann, Gerhard Adam, Harald Ittrich
PURPOSE: To present frequency and types of complications related to silicone (SI) versus polyurethane (PUR) catheters of totally implanted venous access devices (TIVADs) placed in the upper arm. MATERIAL AND METHODS: A cohort of 2,491 consecutive patients with TIVADs implanted between 2006 and 2015 was retrospectively analyzed. Complications were classified according to SIR guidelines. Pearson χ(2) test was used for categorical variables, and Student t test was used for continuous variables...
May 24, 2017: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/28539734/honey-and-health-a-review-of-recent-clinical-research
#12
REVIEW
Saeed Samarghandian, Tahereh Farkhondeh, Fariborz Samini
Honey is one of the most appreciated and valued natural products introduced to humankind since ancient times. Honey is used not only as a nutritional product but also in health described in traditional medicine and as an alternative treatment for clinical conditions ranging from wound healing to cancer treatment. The aim of this review is to emphasize the ability of honey and its multitude in medicinal aspects. Traditionally, honey is used in the treatment of eye diseases, bronchial asthma, throat infections, tuberculosis, thirst, hiccups, fatigue, dizziness, hepatitis, constipation, worm infestation, piles, eczema, healing of ulcers, and wounds and used as a nutritious supplement...
April 2017: Pharmacognosy Research
https://www.readbyqxmd.com/read/28508517/on-demand-antimicrobial-treatment-with-antibiotic-loaded-porous-silicon-capped-with-a-ph-responsive-dual-plasma-polymer-barrier
#13
Roshan B Vasani, Endre J Szili, Gayathri Rajeev, Nicolas H Voelcker
Chronic wounds are a major socio-economic problem. Bacterial infections in such wounds are a major contributor to lack of wound healing. An early indicator of wound infection is an increase in pH of the wound fluid. Herein, we describe the development of a pH-responsive drug delivery device that can potentially be used for wound decontamination in situ and on-demand in response to an increase in the pH of the wound environment. The device is based on a porous silicon film that provides a reservoir for encapsulation of an antibiotic within the pores...
May 16, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28494431/silica-nanoparticles-as-sources-of-silicic-acid-favoring-wound-healing-in-vitro
#14
Sandrine Quignard, Thibaud Coradin, Jonathan J Powell, Ravin Jugdaohsingh
There is good evidence that certain silicon-containing materials promote would healing and their common feature is the delivery of orthosilicic acid (Si(OH)4) either directly or following metabolism. In this respect, amorphous silica nanoparticles (NP), which dissolve in aqueous environments releasing up to 2mM orthosilicic acid, may be appropriate 'slow release' vehicles for bioactive silicon. Here we studied the impact of silica NP suspensions (primary particles∼10nm) in undersaturated conditions (below 2mM Si) with differing degrees of surface charge and dissolution rate on human dermal fibroblasts (CCD-25SK cells) viability, proliferation and migration in a cellular wound model...
April 24, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28492007/colchicine-may-assist-in-reducing-granulation-tissue-in-junctional-epidermolysis-bullosa
#15
Minhee Kim, Swaranjali Jain, Adam G Harris, Dedee F Murrell
Epidermolysis bullosa (EB) is a rare, inherited blistering genodermatosis. Patients with junctional EB (JEB) due to LAMB3 mutations have widespread blisters and erosions of skin, mucosae, and nails, creating significant physical, emotional, and psychosocial burdens. Here we report the use of colchicine for ameliorating hypergranulating wounds in a 41-year-old female with JEB generalized intermediate. Her skin wounds and granulation tissue gradually exacerbated under silicone dressings such that she became profoundly anemic...
June 2016: International Journal of Women's Dermatology
https://www.readbyqxmd.com/read/28482540/dual-layered-3d-nanofibrous-matrix-incorporated-with-dual-drugs-and-their-synergetic-effect-on-accelerating-wound-healing-through-growth-factor-regulation
#16
Sivakumar Singaravelu, Giriprasath Ramanathan, Uma Tiruchirapalli Sivagnanam
The by-product of the slaughter house was utilized for the development of promising regenerative wound dressing material. Currently, dual-layered nanofibrous spongy scaffold was fabricated for tissue engineering applications. Herein, Keratin (K)-Fibrin (F)-Gelatin (G) 3D sponge loaded with Mupirocin (M) was fabricated with the naturally derived materials from bovine origin using freeze drying method. Moreover, poly(3-hydroxybutyric acid) (P) and Gelatin(G) solution loaded with Curcumin (C) were electrospun to get the dual drug loaded dual-layered nanofibrous spongy 3D scaffold (KFG:M-PG:C)...
July 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28458983/s-shaped-wound-closure-technique-for-dumbbell-shaped-keloids
#17
Seiji Komatsu, Shougo Azumi, Yuko Hayashi, Tsuneharu Morito, Yoshihiro Kimata
Dog-ear collection, Z-plasty, and W-plasty are often performed for excision of dumbbell-shaped keloids; however, these procedures require additional incisions or excision of normal skin. Thus, an S-shaped wound closure technique was performed. The keloid lesions were extralesionally excised above the deep fascia, and the wound edges were shifted in opposite directions along the major axis to form an S-shape. The incision was closed by applying deep fascial sutures, subcutaneous sutures, and superficial sutures...
March 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28448714/octopus-inspired-assembly-of-nanosucker-arrays-for-dry-wet-adhesion
#18
Ying-Chu Chen, Hongta Yang
The octopus is capable of adhering to slippery, rough, and irregular surfaces in the marine intertidal zone because of its periodic infundibulum-shaped suckers on the arms. Here, we present a scalable self-assembly technology for fabricating adhesion materials that mimic octopus sucker functionality. By utilizing spin-coated two-dimensional colloidal crystals as templates, non-close-packed nanosucker arrays are patterned on silicone substrates. The resulting nanosuckers can be deformed to exhibit great adhesive capacities on both microrough and flat surfaces in dry and wet environments...
June 27, 2017: ACS Nano
https://www.readbyqxmd.com/read/28441071/efficacy-and-safety-of-23-gauge-pars-plana-vitrectomy-silicone-oil-tamponade-combination-for-treatment-of-pediatric-post-traumatic-endophthalmitis
#19
Wei Jin, Yaopeng Xu, Wenjun Wang, Yiqiao Xing, Anhuai Yang
PURPOSE: To determine (i) the etiology, epidemiology, mechanism of injury, and risk factors associated with open globe injuries (OGIs) in children and (ii) visual outcomes of pediatric patients with post-traumatic endophthalmitis following 23-gauge pars plana vitrectomy (PPV) combined with silicone oil tamponade (SOT). METHODS: A total of 107 consecutive patients, <15 years of age, who had been diagnosed with post-traumatic endophthalmitis between September 2009 and October 2015, were included in this 6-year retrospective study...
April 25, 2017: Current Eye Research
https://www.readbyqxmd.com/read/28415441/stress-stiffened-silicon-nitride-micro-bridges-array-as-substrate-with-tunable-stiffness-for-cell-culture
#20
Jianfeng Chen, Guangli Liu, Chengfu Ma, Gang Zhao, Wenqiang Du, Wulin Zhu, Jiaru Chu
Recently, interactions between one-dimensional structural stiffness of physical micro environments and cell biological process have been widely studied. However in previous studies, the influence of structural stiffness on biological process was coupled with the influence of micro fiber curvature. Therefore decoupling the influences of fiber curvature and structural stiffness on cell biological process is of prime importance. In this study, we proposed a novel cell culture substrate comprised of silicon nitride bridges whose structure stiffness can be regulated by altering the axial residual stress without changing material and geometry properties...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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