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https://www.readbyqxmd.com/read/28917926/bioadhesive-and-biocompatible-films-as-wound-dressing-materials-based-on-a-novel-dendronized-chitosan-loaded-with-ciprofloxacin
#1
Mónica C García, Ana A Aldana, Luis I Tártara, Fabiana Alovero, Miriam C Strumia, Rubén H Manzo, Marisa Martinelli, Alvaro F Jimenez-Kairuz
The bioadhesive polymeric films as topical drug delivery systems are interesting alternatives to improve the pharmacotherapy and patient compliances. New derivate biomaterials based on weisocyanate- dendronized PVP- crosslinked chitosan and loaded with ciprofloxacin (CIP), as model drug, were used to prepare bioadhesive films. Relevant in vitro/in vivo attributes to define main physicochemical and biopharmaceutical characteristics for topical wound-healing applications were evaluated. A high proportion of CIP, uniformly dispersed along throughout the film, was loaded...
November 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28917377/the-effect-of-a-beeswax-olive-oil-and-alkanna-tinctoria-l-tausch-mixture-on-burn-injuries-an-experimental-study-with-a-control-group
#2
Kenan Gümüş, Zeynep Karaman Özlü
OBJECTIVES: This study was planned to investigate the effect of a mixture of beeswax, olive oil and A. Tinctoria (L.) Tausch on burn wounds to determine the impact on burn healing, pain during dressing changes and duration of hospital stay. METHODS: The study was conducted between May 2014 and August 2015 in the Burn Unit of Ataturk University Research Hospital. The sample of this experimental study consisted of 64 patients (31 experimental group and 33 control group) who met its inclusion criteria...
October 2017: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/28915485/long-acting-and-broad-spectrum-antimicrobial-electrospun-poly-%C3%AE%C2%B5-caprolactone-gelatin-micro-nanofibers-for-wound-dressing
#3
Rui Shi, Huan Geng, Min Gong, Jingjing Ye, Chengai Wu, Xiaohua Hu, Liqun Zhang
Trimethoxysilylpropyl octadecyldimethyl ammonium chloride (QAS), which forms facile bonds with hydroxyl groups, acts asa cationic antibacterial agent. In this work, QAS was introduced into a polycaprolactone (PCL)/gelatin hybrid in increasing concentrations to fabricate a long-acting and broad-spectrum antimicrobial micro/nanofiber membrane as a novel wound dressing. The physical interactions and chemical bonding between QAS/PCL and QAS/gelatin were demonstrated by infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS...
September 1, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28914807/development-optimization-and-in-vitro-in-vivo-characterization-of-collagen-dextran-spongious-wound-dressings-loaded-with-flufenamic-acid
#4
Mihaela Violeta Ghica, Mădălina Georgiana Albu Kaya, Cristina-Elena Dinu-Pîrvu, Dumitru Lupuleasa, Denisa Ioana Udeanu
The aim of this study was the development and optimization of some topical collagen-dextran sponges with flufenamic acid, designed to be potential dressings for burn wounds healing. The sponges were obtained by lyophilization of hydrogels based on type I fibrillar collagen gel extracted from calf hide, dextran and flufenamic acid, crosslinked and un-crosslinked, and designed according to a 3-factor, 3-level Box-Behnken experimental design. The sponges showed good fluid uptake ability quantified by a high swelling ratio...
September 15, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28914682/refractory-ulcerated-necrobiosis-lipoidica-closure-of-a-difficult-wound-with-topical-tacrolimus
#5
Luke Ginocchio, Lisa Draghi, Farbod Darvishian, Frank L Ross
OBJECTIVE: To report a case of refractory ulcerated necrobiosis lipoidica (NL) with significant response to treatment with topical tacrolimus. SUBJECT: A 55-year-old woman without diabetes and with a previous history of NL presented to the Helen L. and Martin S. Kimmel Hyperbaric and Advanced Wound Healing Center of NYU Langone Medical Center, New York, with bilateral lower-leg ulcerations resistant to wound healing techniques at other institutions. MATERIALS AND METHODS: Repeat biopsy performed at the author's institution confirmed the diagnosis of NL...
October 2017: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/28914681/randomized-controlled-trial-comparing-collagen-oxidized-regenerated-cellulose-silver-to-standard-of-care-in-the-management-of-venous-leg-ulcers
#6
Breda M Cullen, Thomas E Serena, Molly C Gibson, Robert J Snyder, Jason R Hanft, Raphael A Yaakov
OBJECTIVE: To assess healing outcomes in venous leg ulcers (VLUs) treated with a combination of collagen, oxidized regenerated cellulose, and silver in conjunction with standard of care (SOC; intervention group) compared with SOC alone (control group). Standard of care included ADAPTIC nonadhering dressing (Acelity, San Antonio, Texas) and compression. DESIGN AND SETTING: Randomized controlled trial that followed patients in 3 US facilities for 12 weeks or until complete healing...
October 2017: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/28914679/reliability-of-a-skin-diagnostic-device-in-assessing-hydration-and-erythema
#7
Koh Huimin, Alexandra M Rowledge, Caroline J Borzdynski, Charne Miller, Nicoletta Frescos, Gayle McKenzie, Elizabeth Perry, William McGuiness
OBJECTIVE: To examine the reliability of a skin diagnostic device, the SD202 (Courage+Khazaka GmBH, Cologne, Germany), in assessing hydration and erythema of periwound skin and pressure injury-prone areas. DESIGN: Intrarater reliabilities from 3 cross-sectional and prospective studies are reported. SETTING AND PARTICIPANTS: Patients attending an outpatient, nurse-led wound dressing clinic (n = 16), a podiatrist-led high-risk foot clinic (n = 17), and residents (n = 38) at a single residential aged-care facility...
October 2017: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/28914592/effect-of-topically-applied-hyaluronic-acid-on-pain-and-palatal-epithelial-wound-healing-an-examiner-blind-randomized-controlled-clinical-trial
#8
Selin Yıldırım, Hafize Öztürk Özener, Başak Doğan, Bahar Kuru
BACKGROUND: This study aimed to evaluate the effects of two different concentrations of topical hyaluronic-acid on post-operative patient discomfort and wound healing of palatal donor sites following free gingival graft (FGG) surgery. METHODS: Thirty-six patients requiring FGG were randomly assigned into three groups in an examiner-blind, randomized-controlled clinical trial. After harvesting palatal grafts, 0.2% and 0.8% hyaluronic-acid gels were used in the test-1 and -2 groups, respectively...
September 15, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28914189/a-hopeful-prospect-of-riociguat-as-a-soluble-guanylate-cyclase-stimulator-for-management-of-pressure-ulcers
#9
Soha Azadi, Hajar Ashrafi, Amir Azadi
Pressure ulcer remains as a common problem, especially developed in disabled patients and hence, subjected to continuous pressure for prolonged periods of time. Most of the studies investigating the preventive and therapeutic approaches have focused on wound cleansing, dressing and supportive strategies , as well as pharmacological therapy including zinc sulphate, vitamin A or phenytoin. Despite such efforts, pressure ulcer continues to impair the life quality and expectancy. Thus involving in the paradigm shift in biomedical studies, the recent ones focus on biological signaling pathways involving nitric oxide (NO)- soluble guanylatecyclase (sGC)- cyclic guanosine monophosphate (cGMP) contributing in vasodilation, reperfusion and oxygen delivery...
September 15, 2017: Current Drug Discovery Technologies
https://www.readbyqxmd.com/read/28904933/electrospun-gelatin-poly-glycerol-sebacate-membrane-with-controlled-release-of-antibiotics-for-wound-dressing
#10
Parisa Shirazaki, Jaleh Varshosaz, Anoushe Zargar Kharazi
BACKGROUND: The most important risk that threatens the skin wounds is infections. Therefore, fabrication of a membrane as a wound dressing with the ability of antibiotic delivery in a proper delivery rate is especially important. MATERIALS AND METHODS: Poly(glycerol sebacate) (PGS) was prepared from sebacic acid and glycerol with 1:1 ratio; then, it was added to gelatin in the 1:3 ratio and was dissolved in 80% (v/v) acetic acid, and finally, ciprofloxacin was added in 10% (w/v) of polymer solution...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28902160/chitosan-gel-sheet-containing-polymeric-micelles-synthesis-and-gelation-properties-of-peg-grafted-chitosan
#11
Chikara Yoshida, Yusuke Uchida, Tomoki Ito, Taku Takami, Yoshihiko Murakami
Wound-dressing sheet biomaterials can cover wound sites and enhance wound healing. In this study, a detailed evaluation of the factors affecting both the PEG modification percentage (PMP) in poly(ethylene glycol) (PEG)-grafted chitosan synthesis and the gelation properties of PEG-grafted chitosan was presented for constructing our novel hybrid hydrogel sheet consisting of PEG-grafted chitosan (a gel-forming polymer) and a reactive polymeric micelle (a crosslinker). It was confirmed that various factors (i.e...
September 13, 2017: Materials
https://www.readbyqxmd.com/read/28901717/preliminary-result-with-incisional-negative-pressure-wound-therapy-and-pectoralis-major-muscle-flap-for-median-sternotomy-wound-infection-in-a-high-risk-patient-population
#12
Federico Lo Torto, Ambra Monfrecola, Juste Kaciulyte, Pedro Ciudad, Donato Casella, Diego Ribuffo, Bruno Carlesimo
Deep sternal wound infection (DSWI) represents a dangerous complication that can follow open-heart surgery with median sternotomy access. Muscle flaps, such as monolateral pectoralis major muscle flap (MPMF), represent the main choices for sternal wound coverage and infection control. Negative pressure incision management system has proven to be able to reduce the incidence of these wounds' complications. Prevena(TM) represents one of these incision management systems and we aimed to evaluate its benefits. A total of 78 patients with major risk factors that presented post-sternotomy DSWI following cardiac surgery was selected...
September 13, 2017: International Wound Journal
https://www.readbyqxmd.com/read/28901187/peptide-modified-chitosan-hydrogels-accelerate-skin-wound-healing-by-promoting-fibroblast-proliferation-migration-and-secretion
#13
Xionglin Chen, Min Zhang, Shixuan Chen, Xueer Wang, Zhihui Tian, Yinghua Chen, Pengcheng Xu, Lei Zhang, Lu Zhang, Lin Zhang
Skin wound healing is a complicated process that involves a variety of cells and cytokines. Fibroblasts play an important role in this process and participate in transformation into myofibroblasts, the synthesis of extracellular matrix (ECM) and fibers, and the secretion of a variety of growth factors. This study assessed the effects of peptide Ser-Ile-Lys-Val-Ala-Val (SIKVAV)--modified chitosan hydrogels on skin wound healing. We investigated the capability of peptide SIKVAV to promote cell proliferation and migration, the synthesis of collagen, and the secretion of a variety of growth factors using fibroblasts in vitro...
August 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28893918/enterococcus-faecalis-promotes-innate-immune-suppression-and-polymicrobial-catheter-associated-urinary-tract-infection
#14
Brenda Yin Qi Tien, Hwee Mian Sharon Goh, Kelvin Kian Long Chong, Soumili Bhaduri-Tagore, Sarah Holec, Regine Dress, Florent Ginhoux, Molly A Ingersoll, Rohan B H Williams, Kimberly A Kline
Enterococcus faecalis, a member of the human gastrointestinal microbiota, is an opportunistic pathogen associated with hospital-acquired wound, bloodstream, and urinary tract infections. E. faecalis can subvert or evade immune-mediated clearance, although the mechanisms are poorly understood. In this study, we examined E. faecalis-mediated subversion of macrophage activation. We observed that E. faecalis actively prevents NF-κB signaling in mouse RAW264.7 macrophages in the presence of Toll-like receptor agonists and during polymicrobial infection with Escherichia coliE...
September 11, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28893459/placing-the-patient-at-the-centre-of-chronic-wound-care-a-qualitative-evidence-synthesis
#15
REVIEW
Naomi Fearns, Stephen Heller-Murphy, Joanna Kelly, Jenny Harbour
BACKGROUND: Chronic wounds are a major health burden and have a severe impact on well-being. This synthesis of qualitative studies was undertaken to inform a health technology assessment of antimicrobial wound dressings. It aimed to explore patients' experiences of chronic wounds and determine improvements for clinical practice. METHOD: Inclusion criteria included use of qualitative methods, and English language publication. Databases searched included MEDLINE (Ovid), MEDLINE in Process (Ovid), EMBASE (Ovid), CINAHL (EBSCOHost), and PsychInfo (EBSCOHost)...
September 5, 2017: Journal of Tissue Viability
https://www.readbyqxmd.com/read/28891961/visible-light-cured-glycol-chitosan-hydrogel-containing-a-beta-cyclodextrin-curcumin-inclusion-complex-improves-wound-healing-in-vivo
#16
Sun-Jung Yoon, Hoon Hyun, Deok-Won Lee, Dae Hyeok Yang
Scarless wound healing is ideal for patients suffering from soft tissue defects. In this study, we prepared a novel wet dressing (β-CD-ic-CUR/GC) based on the visible light-cured glycol chitosan (GC) hydrogel and inclusion complex between beta-cyclodextrin (β-CD) and curcumin (CUR). We also evaluated its efficacy in the acceleration of wound healing as compared to that of CUR-loaded GC (CUR/GC). The conjugation of glycidyl methacrylate (GM) to GC for photo-curing was confirmed by ¹H-NMR measurement, and the photo-cured GC hydrogel was characterized by the analyses of rheology, swelling ratio, SEM and degradation rate...
September 10, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28888006/chitosan-membrane-dressings-toughened-by-glycerol-to-load-antibacterial-drugs-for-wound-healing
#17
Ye Ma, Lian Xin, Huaping Tan, Ming Fan, Jianliang Li, Yang Jia, Zhonghua Ling, Yong Chen, Xiaohong Hu
Transparent and flexible chitosan-based membranes containing antibacterial drugs were prepared through a casting/solvent evaporation method from suspension of chitosan floccule. To enhance mechanical properties, glycerin was incorporated into the floccule suspension to conjugate chitosan as a plasticizer. The mechanism of membrane formation is attributed to inter- and intro-hydrogen bonding between chitosan and glycerol molecules. The results showed that incorporation of glycerol has a significant influence on the properties of the chitosan membranes...
December 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28887998/novel-poly-%C3%AE%C2%B5-caprolactone-gelatin-wound-dressings-prepared-by-emulsion-electrospinning-with-controlled-release-capacity-of-ketoprofen-anti-inflammatory-drug
#18
A O Basar, S Castro, S Torres-Giner, J M Lagaron, H Turkoglu Sasmazel
In the present study, a single and binary Ketoprofen-loaded mats of ultrathin fibers were developed by electrospinning and their physical properties and drug release capacity was analyzed. The single mat was prepared by solution electrospinning of poly(ε-caprolactone) (PCL) with Ketoprofen at a weight ratio of 5wt%. This Ketoprofen-containing PCL solution was also used as the oil phase in a 7:3 (wt/wt) emulsion with gelatin dissolved in acidified water. The resultant stable oil-in-water (O/W) emulsion of PCL-in-gelatin, also containing Ketoprofen at 5wt%, was electrospun to produce the binary mat...
December 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28887985/cerium-oxide-nanoparticle-containing-poly-%C3%AE%C2%B5-caprolactone-gelatin-electrospun-film-as-a-potential-wound-dressing-material-in-vitro-and-in-vivo-evaluation
#19
Mahdi Naseri-Nosar, Saeed Farzamfar, Hamed Sahrapeyma, Sadegh Ghorbani, Farshid Bastami, Ahmad Vaez, Majid Salehi
In the present study, cerium oxide (CeO2) nanoparticles were incorporated into poly (ε-caprolactone)/gelatin films in order to develop a potential wound dressing material. The wound dressings were prepared by electrospinning of poly (ε-caprolactone)/gelatin (1:1 (w/w)) solutions containing 1.50%, 3% and 6% (w/w) CeO2 nanoparticles. The electrospun films were evaluated regarding their morphology, contact angle, water-uptake capacity, water vapor transmission rate, tensile strength and cellular response. The film containing 1...
December 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28887976/nanoclay-cross-linked-semi-ipn-silk-sericin-poly-nipam-lmsh-nanocomposite-hydrogel-an-outstanding-antibacterial-wound-dressing
#20
Chaochao Yang, Rui Xue, Qingsong Zhang, Shulin Yang, Pengfei Liu, Li Chen, Ke Wang, Xiaoyong Zhang, Yen Wei
High antibacterial and skin-like hydrogels have always been the perfect wound dressing for human to protect wound from infection. Here, based on silk sericin, we design a series of nanoclay lithium magnesium silicate hydrate (LMSH) cross-linked semi-IPN sericin/poly(NIPAm/LMSH) (HSP) nanocomposite hydrogels and demonstrate advantages in serving as antibacterial wound dressing in comparison with gauze. Firstly, the effect of mass ratios of sericin/(sericin+NIPAm) upon pore structure, feasibility of mechanics and gas permeability of HSP nanocomposite hydrogels were evaluated...
December 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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