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Ricardo Vega Monroy, Guillermo Salazar Cohen
In this work we present a theory, which is able to explain the non-monotonic decreasing behavior (observed in experimental data(1-11)) of the graphene terahertz conductivity with the increase of the field frequency. In this connection, the displacement of the structure of topological states inside the energy band gap, which appears in graphene due to the strong photon-electron coupling, and the narrowing of this gap, as result of electron transitions from bound photon-dressed electron states to extended states outside the energy gap driven by the field frequency, lead to a periodic change of singularities near the edge of the band gap, resulting in subtle quantum oscillations of the dynamical terahertz conductivity...
October 25, 2016: Nano Letters
Maren Paulmann, Maja Mockenhaupt
Severe cutaneous adverse reactions (SCAR) are known for a high morbidity and mortality. They may be life-threatening for the affected patient and difficult to accomplish for the patient's family and the treating physician. Such conditions include not only bullous reactions like toxic epidermal necrolysis (TEN) and Stevens-Johnson syndrome (SJS), but also acute generalized exanthematous pustulosis (AGEP) and drug reaction with eosinophilia and systemic symptoms (DRESS). Since clinical pattern, etiology, prognosis and treatment differ among these severe skin reactions, a clear diagnosis based on a comprehensive clinical examination, skin biopsy, and specific laboratory tests is necessary...
September 28, 2016: Current Pharmaceutical Design
L Rosenberg, Y Shoham, Y Krieger, G Rubin, F Sander, J Koller, K David, D Egosi, R Ahuja, A J Singer
Current surgical and non-surgical eschar removal-debridement techniques are invasive or ineffective. A bromelainbased rapid and selective enzymatic debriding agent was developed to overcome these disadvantages and compared with the standard of care (SOC). The safety and efficacy of a novel Debriding Gel Dressing (DGD) was determined in patients with deep partial and full thickness burns covering up to 67% total body surface area (TBSA). This review summarizes data from seven studies, four of which were randomized clinical trials that included a SOC or control vehicle...
December 31, 2015: Annals of Burns and Fire Disasters
Matthew J Grosso, Ari Berg, Samuel LaRussa, Taylor Murtaugh, David P Trofa, Jeffrey A Geller
BACKGROUND: Commercial silver-impregnated occlusive dressings (such as Aquacel Ag Surgical wound dressing) have been touted as antimicrobial dressings to be used following total joint arthroplasty. Given the increased cost of an Aquacel dressing over a standard dressing for total joint arthroplasty, the objective of this study was to determine whether Aquacel surgical dressing is effective in reducing the rates of acute periprosthetic joint infection (PJI) compared to standard sterile dressing...
September 28, 2016: Journal of Arthroplasty
Rafaela Fernandes Zancan, Rodrigo Ricci Vivan, Marcelo Ribeiro Milanda Lopes, Paulo Henrique Weckwerth, Flaviana Bombarda de Andrade, José Burgos Ponce, Marco Antonio Hungaro Duarte
INTRODUCTION: The aim of the present study was to evaluate the pH, calcium release, solubility, and antimicrobial action against biofilms of calcium hydroxide + saline solution, Calen (SS White Artigos Dentários Ltd, Rio de Janeiro, Brazil) (CH/P), Calen camphorated paramonochlorophenol (CMCP) (CH/CMPC), and calcium hydroxide + chlorhexidine (CH/CHX) pastes. METHODS: The pH of the pastes was determined with a calibrated pH meter placed in direct contact with each paste...
October 21, 2016: Journal of Endodontics
Hai-Fei Liu, Feng Zhang, William C Lineaweaver
Advances in burn care have a long history with accelerated development within the last 50 years. The principal areas of burn treatment include dressings, antimicrobials, fluid resuscitation, burn wound excision, grafting of skin, and skin substitution. This review presents a historical outline of these areas, their current status, and prospects for the future of burn care.
October 19, 2016: Annals of Plastic Surgery
Steven A Kahn, Ashkan Afshari, Lyly Nguyen, Takashi Shinha, Teri Huff, Amelia C Montgomery, Charles Stratton, Blair Summitt
Mafenide acetate is used in some burn wounds for its ability to penetrate eschar but requires frequent uncomfortable dressing changes for its application. The authors hypothesize that hydrofiber dressings will hold mafenide acetate solution for an extended period of time and maintain antimicrobial activity longer than traditional gauze, thus possibly obviating the need for frequent dressing changes. Four experimental arms included: 1) hydrofiber, stored on a dry well plate as control, 2) gauze saturated with 2...
October 13, 2016: Journal of Burn Care & Research: Official Publication of the American Burn Association
X-R Luan, W-H Li, F-L Lou
OBJECTIVE: To analyze and evaluate the effects of humanized nursing combined with wet healing therapy to treat the stage II and III bedsores in hospitalized patients. PATIENTS AND METHODS: From March 2013 to July 2014 we enrolled fifty patients with stage II and III bedsores. They were randomly divided into control group and experimental group, with 25 cases in each group. For the control group, we adopted a traditional method of treatment for pressure ulcer treatment, while the experimental group was treated with humanized nursing in combination with wet healing therapy...
October 2016: European Review for Medical and Pharmacological Sciences
Clifford M Marks, John E Nawn, Julie A Caplow
No abstract text is available yet for this article.
October 24, 2016: JAMA Internal Medicine
Rita Langasco, Barbara Cadeddu, Marilena Formato, Antonio Junior Lepedda, Massimo Cossu, Paolo Giunchedi, Roberto Pronzato, Giovanna Rassu, Renata Manconi, Elisabetta Gavini
The growing interest in the use of recyclable and biodegradable natural materials has become a relevant topic in pharmaceutics. In this work, we suggest the use and valorization of natural horny skeleton of marine sponges (Porifera, Dictyoceratida) as bio-based dressing for topical drug delivery. Biomaterial characterization focusing on morpho-functional traits, swelling behavior, fluid uptake performances, glycosaminoglycans content and composition and microbiological quality assessment was carried out to investigate the collagenic skeleton properties...
January 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
Nurettin Sahiner, Selin Sagbas, Mehtap Sahiner, Coskun Silan
Super porous poly(2-hydroxy ethyl methacrylate) (p(HEMA)) cryogel was successfully synthesized by using polyethylene glycol diacrylate (p(EGDA)) crosslinker under cryogenic conditions. Poly(Tannic acid) (p(TA)) macro-, micro-, and nanoparticles prepared from a natural polyphenol, tannic acid (TA), were embedded into p(HEMA) cryogel networks to obtain composite p(TA) particle-embedded p(HEMA) cryogel. Different size ranges of spherical p(TA) particles, 2000-500μm, 500-200μm, 200-20μm, and 20-0.5μm size, were included in the cryogel network and illustrated by digital camera, optic microscope, and SEM images of the microgel-cryogel network...
January 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
Huinan Chen, Xiaodong Xing, Huaping Tan, Yang Jia, Tianle Zhou, Yong Chen, Zhonghua Ling, Xiaohong Hu
An antibacterial and biodegradable composite hydrogel dressing integrated with microspheres is developed for drug delivery and wound healing. The mechanism of gelation is attributed to the Schiff-base reaction between aldehyde and amino groups of oxidized alginate (OAlg) and carboxymethyl chitosan (CMCS). To enhance antibacterial and mechanical properties, tetracycline hydrochloride (TH) loaded gelatin microspheres (GMs) were fabricated by an emulsion cross-linking method, followed by integrating into the OAlg-CMCS hydrogel to produce a composite gel dressing...
January 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
Gyeung Mi Seon, Mi Hee Lee, Byeong-Ju Kwon, Min Sung Kim, Min-Ah Koo, Dohyun Kim, Young Seomun, Jong-Tak Kim, Jong-Chul Park
: Although a number of natural materials have been used as hemostatic agents, many substances do not act quickly enough. Here, we created a novel dressings using collagen and chitosan with recombinant batroxobin (r-Bat) to promote faster and more effective hemostasis. We hypothesized that r-Bat would promote synergetic blood coagulation because it contains a blood coagulation active site different than those of collagen and chitosan. Our results suggest that each substances can maintain hemostatic properties while in the mixed dressings and that our novel hemostatic dressings promotes potent control of bleeding, as demonstrated by a whole blood assay and rat hemorrhage model...
October 18, 2016: Acta Biomaterialia
Feifei Xiao, Guoshuai Cai, Heping Zhang
In early 2015, the debate of blue-black and white-gold color perception from "the dress" became an overnight internet phenomenon. According to the vote from the online social network Twitter, more people observed white-gold colors than those who observed blue-black colors. Biological explanations have been proposed by neurologist and other scientists, most of which mainly focus on the bias of color perception from visual cortex assuming different illuminants as backgrounds. The goal of this study was to investigate the genetic reason that might be underlying this phenomenon...
2016: PloS One
Laura Bolton
No abstract text is available yet for this article.
October 2016: Wounds: a Compendium of Clinical Research and Practice
Ian Chik, Enda G Kelly, Razman Jarmin, Farrah-Hani Imran
INTRODUCTION: Negative pressure wound therapy is a widely used method of wound dressing with various commercially available brands. The authors created the Hanikoda Method (HM) for effective wound bed preparation or definite wound closure. METHODS: In this case series, the authors discuss 8 different wound cases that presented to their Plastics Unit from January 2014 to June 2015. Patients with traumatic or infected wounds were selected for treatment with the HM...
October 2016: Wounds: a Compendium of Clinical Research and Practice
Jae-Hui Nam, Young-Jun Choi, Jae Yun Lim, Joon Hong Min, Won-Serk Kim
High-intensity focused ultrasound (HIFU) is regarded as an effective skin-lifting device; however, literature regarding treatment of the aging neck and décolletage with HIFU is scarce. Our study aimed to evaluate the efficacy of combination with HIFU and low-fluence Q-switched Nd:YAG (LQSNY) laser on the aging neck and décolletage. Nineteen women were assessed. HIFU at two visits and LQSNY laser at six visits were used to irradiate the neck and chest. At week 16, improvements were rated using the Dedo classification, Fabi/Bolton Chest Wrinkle Scale (FBCWS), and Global Aesthetic Improvement Scales (GAIS)...
October 20, 2016: Lasers in Medical Science
Giuseppe Santarpino, Lazlo Gazdag, Joachim Sirch, Ferdinand Vogt, Miroslaw Ledwon, Theodor Fischlein, Steffen Pfeiffer
Bilateral internal thoracic artery (BITA) grafting may be associated with a higher risk of postoperative deep sternal wound infection than monolateral internal thoracic artery grafting due to a limited blood supply to the thoracic chest wall. Because preliminary studies suggest negative pressure wound therapy (NPWT) may reduce the risk of infection, a retrospective chart review of 129 patients who underwent BITA between February 2003 and October 2014 was conducted. Of those, 21 patients received NPWT for 5 days immediately following surgery and the incisions of 108 patients were covered with a conventional gauze dressing...
December 2015: Ostomy/wound Management
Mansi Bansal, Ashish Kumar, Komal Puri, Manish Khatri, Geeti Gupta, Hitesh Vij
The foremost indication for gingival depigmentation is patient demand for improved aesthetics. In most cases after the removal of pigmented layer, the area is covered with periodontal packs. These dressings have no curative properties. They only minimise the likelihood of surface trauma during mastication. However, platelet-rich fibrin (PRF) accelerates wound healing by effective neovascularisation and promoting fast cicatricial tissue remodelling. In the present split mouth study, PRF membrane was applied in the first quadrant and non-eugenol dressing (Coe-Pack) in the second quadrant after depigmentation...
July 2016: Journal of Cutaneous and Aesthetic Surgery
Z Adamiak, D Bukowiecka, P Jastrzębski, M Jałyński, P Holak, J Głodek, G Gudzbeler
Hemorrhaging from large vessels poses a serious problem in emergency situations when blood loss needs to be immediately controlled. The aim of the study was to compare the effectiveness of two hemostatic dressings in controlling bleeding from a surgically punctured femoral artery. The study was performed on thirteen pigs divided into two groups, of six and seven pigs, respectively. Combat gauze covered with ChitoClear hqg 95 chitosan and Protanal LF10/60 FT sodium alginate was used in the first group, seton covered with identical substances was uses in the second group...
September 1, 2016: Polish Journal of Veterinary Sciences
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