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Wound Repair

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https://www.readbyqxmd.com/read/28345420/peroneal-perforator-pedicle-propeller-flap-for-lower-leg-soft-tissue-defect-reconstruction-clinical-applications-and-treatment-of-venous-congestion
#1
Lifeng Shen, Yiyang Liu, Chun Zhang, Qiaofeng Guo, Wenhua Huang, Kelvin Kian Loong Wong, Shimin Chang
Objective To describe the characteristics of the perforator vessel in the peroneal artery of the lower leg and to explore the use of perforator pedicle propeller flaps to repair soft tissue defects in the lower leg, heel and foot. Methods This retrospective study enrolled patients with soft tissue defects of the distal lower leg, heel and foot who underwent surgery using peroneal perforator-based propeller flaps. The peroneal artery perforators were identified preoperatively by colour duplex Doppler ultrasound...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28342310/silver-nanoparticles-synthesized-and-coated-with-pectin-an-ideal-compromise-for-anti-bacterial-and-anti-biofilm-action-combined-with-wound-healing-properties
#2
P Pallavicini, C R Arciola, F Bertoglio, S Curtosi, G Dacarro, A D'Agostino, F Ferrari, D Merli, C Milanese, S Rossi, A Taglietti, M Tenci, L Visai
The synthesis of Ag nanoparticles from Ag(+) has been investigated, with pectin acting both as reductant and coating.∼100% Ag(+) to Ag(0) one-pot conversion was obtained, yielding p-AgNP, i.e. an aqueous solution of pectin-coated spherical Ag nanoparticles (d=8.0±2.6nm), with a<1ppm concentration of free Ag(+) cation. Despite the low free Ag(+) concentration and low Ag(+) release with time, the nature of the coating allows p-AgNP to exert excellent antibacterial and antibiofilm actions, comparable to those of ionic silver, tested on E...
March 18, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28337995/cigarette-smoke-impairs-a2a-adenosine-receptor-mediated-wound-repair-through-up-regulation-of-duox-1-expression
#3
Zhi Tian, Hui Zhang, Jendayi Dixon, Nicole Traphagen, Todd A Wyatt, Kusum Kharbanda, Samantha Simet Chadwick, Narasaiah Kolliputi, Diane S Allen-Gipson
Cigarette smoke (CS) exposure and intrinsic factors such as the NADPH oxidases produce high levels of reactive oxygen species (ROS), ensuing inflammatory tissue injury. We previously demonstrated that CS-generated ROS, particularly hydrogen peroxide (H2O2), impaired adenosine stimulated wound repair. We hypothesized that CS exposure modulates expression of Dual oxidase 1 (Duox-1), a NADPH oxidases known to generate H2O2. To test this hypothesis, we used human bronchial epithelial cell line Nuli-1 and C57BL/6 mice...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28337854/silk-fibroin-biomaterial-shows-safe-and-effective-wound-healing-in-animal-models-and-a-randomized-controlled-clinical-trial
#4
Wei Zhang, Longkun Chen, Jialin Chen, Lingshuang Wang, Xuexian Gui, Jisheng Ran, Guowei Xu, Hongshi Zhao, Mengfeng Zeng, Junfeng Ji, Li Qian, Jianda Zhou, Hongwei Ouyang, Xiaohui Zou
Due to its excellent biological and mechanical properties, silk fibroin has been intensively explored for tissue engineering and regenerative medicine applications. However, lack of translational evidence has hampered its clinical application for tissue repair. Here a silk fibroin film is developed and its translational potential is investigated for skin repair by performing comprehensive preclinical and clinical studies to fully evaluate its safety and effectiveness. The silk fibroin film fabricated using all green chemistry approaches demonstrates remarkable characteristics, including transmittance, fluid handling capacity, moisture vapor permeability, waterproofness, bacterial barrier properties, and biocompatibility...
March 24, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28337222/a-conditioned-medium-of-umbilical-cord-mesenchymal-stem-cells-overexpressing-wnt7a-promotes-wound-repair-and-regeneration-of-hair-follicles-in-mice
#5
Liang Dong, Haojie Hao, Jiejie Liu, Dongdong Ti, Chuan Tong, Qian Hou, Meirong Li, Jingxi Zheng, Gang Liu, Xiaobing Fu, Weidong Han
Mesenchymal stem cells (MSCs) can affect the microenvironment of a wound and thereby accelerate wound healing. Wnt proteins act as key mediators of skin development and participate in the formation of skin appendages such as hair. The mechanisms of action of MSCs and Wnt proteins on skin wounds are largely unknown. Here, we prepared a Wnt7a-containing conditioned medium (Wnt-CM) from the supernatant of cultured human umbilical cord-MSCs (UC-MSCs) overexpressing Wnt7a in order to examine the effects of this CM on cutaneous healing...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28336300/development-of-topical-delivery-systems-for-flightless-neutralizing-antibody
#6
Hanif Haidari, Qian Zhang, Elizabeth Melville, Zlatko Kopecki, Yunmei Song, Allison J Cowin, Sanjay Garg
Flightless I (Flii) is an actin remodelling protein important for cytoskeletal regulation and cellular processes including migration, proliferation and adhesion. Previous studies have clearly identified Flii as a novel therapeutical target for improved wound repair and have demonstrated Flii regulation using Flii neutralizing antibodies (FnAb) in different models of wound healing in vivo. Here we describe the development of an optimised topical delivery system that can neutralize Flii activity in the epidermis...
March 20, 2017: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28335546/dietary-protein-and-amino-acid-supplementation-in-inflammatory-bowel-disease-course-what-impact-on-the-colonic-mucosa
#7
REVIEW
Sandra Vidal-Lletjós, Martin Beaumont, Daniel Tomé, Robert Benamouzig, François Blachier, Annaïg Lan
Inflammatory bowel diseases (IBD), after disease onset, typically progress in two cyclically repeated phases, namely inflammatory flare and remission, with possible nutritional status impairment. Some evidence, either from epidemiological, clinical, and experimental studies indicate that the quantity and the quality of dietary protein consumption and amino acid supplementation may differently influence the IBD course according to the disease phases. For instance, although the dietary protein needs for mucosal healing after an inflammatory episode remain undetermined, there is evidence that amino acids derived from dietary proteins display beneficial effects on this process, serving as building blocks for macromolecule synthesis in the wounded mucosal area, energy substrates, and/or precursors of bioactive metabolites...
March 21, 2017: Nutrients
https://www.readbyqxmd.com/read/28335317/cytotoxicity-of-silver-nanoparticle-and-chitin-nanofiber-sheet-composites-caused-by-oxidative-stress
#8
Jun Kinoda, Masayuki Ishihara, Hidemi Hattori, Shingo Nakamura, Koichi Fukuda, Hidetaka Yokoe
Size-controlled spherical silver nanoparticles (<10 nm) and chitin-nanofiber sheet composites (Ag NPs/CNFS) have previously been reported to have strong antimicrobial activity in vitro. Although Ag NPs/CNFS have strong antimicrobial activity, their cytotoxicity has not been investigated. This study was performed to evaluate the effects of Ag NPs/CNFS on cytotoxicity for fibroblasts in vitro and healing delay of wound repair in vivo, focused on oxidative stress. Cytotoxic activities of Ag NPs/CNFS were investigated using a fibroblast cell proliferation assay, nitric oxide/nitrogen dioxide (NO/NO₂) measurement of the cell lysates in vitro, inhibitory effects of Ag NPs/CNFS on healing-impaired wound repair using diabetic mice in vivo, 8-hydroxy-2'-deoxyguanosine (8-OHdG) immunohistochemical staining of the skin sections, and generation of carbonyl protein in the wound was performed to evaluate cytotoxicity with oxidative stress...
October 20, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28335059/retrospective-evaluation-of-percutaneous-access-for-tevar-and-evar-time-to-make-it-the-standard-approach
#9
Rohit Philip Thomas, Tobias Kowald, Bernhard Schmuck, Osama Eldergash, Andreas Klausen, Valentin Dikov, Jerry Easo, Ajay Chavan
Introduction To evaluate the safety of percutaneous endovascular aortic repair and the relationship of access site characteristics to complications Materials and Methods All patients undergoing percutaneous TEVAR, EVAR and FEVAR procedures from January 2010 to May 2016 were retrospectively analysed for incidence of complications and their relationship to various access site characteristics like access artery size, degree of vessel calcification, skin to artery distance and sheath to artery ratio. Hemostasis occurring within 15 min after suture closure with or without manual compression was defined as primary hemostasis...
April 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28334060/bone-repair-process-in-defects-of-diabetic-rats-filled-with-autogenous-bone-graft-and-covered-with-homogenous-bone-matrix-membrane-or-polytetrafluoroethylene-membrane
#10
Carlos Alberto Timóteo, Alessandra Marcondes Aranega, Elio Hitoshi Shinohara, Juliana Zorzi Coléte
PURPOSE: To analyze the process of repair of bone defects in diabetic rats filled with autogenous bone and covered with membranes of homogenous bone matrix or expanded polytetrafluoroethylene (ePTFE). MATERIALS AND METHODS: One hundred twenty male rats were divided into two groups: group 1 (IC), without systemic alterations (control), received an intravenous injection of citrate buffer at 0.01 M, pH 4.5; group 2 (IID) (diabetic) received an intravenous injection of streptozotocin (Sigma-Aldrich) dissolved in 0...
March 23, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28331144/totally-extraperitoneal-tep-removal-of-an-infected-mesh-by-laparoscopy-after-open-preperitoneal-repair-initial-case-report
#11
Naoto Chihara, Keisuke Mishima, Hideyuki Suzuki, Masanori Watanabe, Tetsutaka Toyoda, Eiji Uchida
Prosthetic mesh infection after open or laparoscopic hernia repair is a rare complication. Superficial wound infection can be resolved by treatment with a combination of antibiotics and wound drainage, whereas deep-seated mesh infection, which can lead to chronic groin sepsis, usually requires removal of the mesh. A 56-year-old Japanese man was admitted to our hospital for the treatment of deep-seated mesh infection. The patient had undergone inguinal hernia repair at another hospital 18 months earlier. The operation was prosthetic mesh repair via an anterior approach...
2017: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
https://www.readbyqxmd.com/read/28328635/a-systematic-review-of-the-use-of-telemedicine-in-plastic-and-reconstructive-surgery-and-dermatology
#12
Krishna S Vyas, H Rhodes Hambrick, Afaaf Shakir, Shane D Morrison, Duy C Tran, Keon Pearson, Henry C Vasconez, Samir Mardini, Amanda A Gosman, Marek Dobke, Mark S Granick
BACKGROUND: Telemedicine, the use of information technology and telecommunication to provide healthcare at a distance, is a burgeoning field with applications throughout medicine. Given the visual nature of plastic surgery and dermatology, telemedicine has a myriad of potential applications within the field. METHODS: A comprehensive literature review of articles published on telemedicine since January 2010 was performed. Articles were selected for their relevance to plastic and reconstructive surgery and dermatology, and then reviewed for their discussion of the applications, benefits, and limitations of telemedicine in practice...
March 21, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28326930/effects-of-jwh015-in-cytokine-secretion-in-primary-human-keratinocytes-and-fibroblasts-and-its-suitability-for-topical-transdermal-delivery
#13
Alicia Bort, Perla A Alvarado-Vazquez, Carolina Moracho-Vilrriales, Kristopher G Virga, Giuseppe Gumina, Alfonso Romero-Sandoval, Scott Asbill
Background JWH015 is a cannabinoid (CB) receptor type 2 agonist that produces immunomodulatory effects. Since skin cells play a key role in inflammatory conditions and tissue repair, we investigated the ability of JWH015 to promote an anti-inflammatory and pro-wound healing phenotype in human primary skin cells. Methods Human primary keratinocytes and fibroblasts were stimulated with lipopolysaccharide. The mRNA expression of cannabinoid receptors was determined using RT-PCR. The effects of JWH015 (0.05, 0...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28326684/collagen-cellulose-nanocrystal-scaffolds-containing-curcumin-loaded-microspheres-on-infected-full-thickness-burns-repair
#14
Rui Guo, Yong Lan, Wei Xue, Biao Cheng, Yuanming Zhang, Changyong Wang, Seeram Ramakrishna
Burn infection is a serious problem that delays wound healing and leads to death. Curcumin (Cur) has been shown to exhibit antioxidant, anti-inflammatory, antimicrobial and anticarcinogenic activity. However, its instability, extremely low aqueous solubility and bioavailability in physiological fluids may make it difficult to maintain local Cur concentrations above the minimum inhibitory concentration for burn infection treatment. The objective of this study was to construct complexes of Cur/gelatin microspheres (GMs) and porous collagen (Coll)-cellulose nanocrystals (CNCs) composite scaffolds for full-thickness burn infection treatment...
March 22, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28325428/complete-section-of-proper-palmar-digital-pedicles-correlation-between-arterial-patency-and-sensory-recovery
#15
G Pomares, F Dap, G Dautel
Wounds to proper palmar digital (PPD) pedicles are frequent surgical emergencies. A correlation between arterial patency and nerve regeneration, however, has never been demonstrated. Forty-seven patients presenting complete section of a PPD pedicle and having undergone surgical repair of both elements were followed-up at a minimum of one year postoperatively. Doppler ultrasound examination studied arterial patency as well as the degree of stenosis. Neurological examination determined the BMRC score and the existence of cold intolerance, symptomatic neuroma and neurogenic pain...
April 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28324043/reduced-transforming-growth-factor-beta-activity-in-the-endometrium-of-women-with-heavy-menstrual-bleeding
#16
J A Maybin, L Boswell, V J Young, W C Duncan, Hod Critchley
Context: Heavy menstrual bleeding (HMB) is common and incapacitating. Aberrant menstrual endometrial repair may result in HMB. The TGFβ superfamily contributes to tissue repair, but its role in HMB is unknown. Objective: We hypothesised that TGFβ1 is important for endometrial repair and women with HMB have aberrant TGFβ1 activity at menses. Participants/Setting: Endometrial biopsies were collected from women and menstrual blood loss objectively measured (HMB >80ml/cycle, normal menstrual bleeding, NMB <80ml)...
January 3, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323799/a-prospective-randomized-trial-to-assess-oral-versus-intravenous-antibiotics-for-the-treatment-of-postoperative-wound-infection-after-extremity-fractures-poviv-study
#17
William T Obremskey, Andrew H Schmidt, Robert V OʼToole, Jennifer DeSanto, Saam Morshed, Paul Tornetta, Clinton K Murray, Clifford B Jones, Daniel O Scharfstein, Tara J Taylor, Anthony R Carlini, Renan C Castillo
Patients surgically treated for infection after extremity fractures are typically discharged with a 6- to 12-week antibiotic regimen. Intravenous (IV) antibiotics are associated with significant cost and potential complications of deep vein thrombosis, line clotting, and sepsis. Many of the pathogens that cause musculoskeletal infection have both oral (PO) and IV antibiotic options with adequate bioavailability and antibacterial effect, yet IV antibiotics remain the standard of care absent evidence that PO options are clinically as efficacious...
April 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28322901/urethral-mobilization-as-an-alternative-procedure-for-distal-hypospadias-repair
#18
Hamed M El Darawany, Mahmoud E Al Damhogy
OBJECTIVE: To evaluated the urethral mobilization procedure as the main technique in management of glanular, coronal, subcoronal, and distal penile hypospadias. PATIENTS AND METHODS: Sixty patients with distal hypospadias were included in this prospective study between January 2013 and January 2015. All of them repaired by urethral mobilization. All patients were followed up at 2 weeks, 1, 3, 6 and 12 months post operatively. Duration of the operation, hospital stay, position of meatus and its shape before and after the operation and the postoperative complications were recorded...
March 17, 2017: Urology
https://www.readbyqxmd.com/read/28317846/serum-and-synovial-fluid-lipidomic-profiles-predict-obesity-associated-osteoarthritis-synovitis-and-wound-repair
#19
Chia-Lung Wu, Kelly A Kimmerling, Dianne Little, Farshid Guilak
High-fat diet-induced obesity is a major risk factor for osteoarthritis (OA) and diminished wound healing. The objective of this study was to determine the associations among serum and synovial fluid lipid levels with OA, synovitis, adipokine levels, and wound healing in a pre-clinical obese mouse model of OA. Male C57BL/6 J mice were fed either a low-fat (10% kcal) or one of three high-fat (HF, 60% kcal) diets rich in saturated fatty acids (SFAs), ω-6 or ω-3 polyunsaturated FAs (PUFAs). OA was induced by destabilization of the medial meniscus...
March 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28317335/research-highlights
#20
(no author information available yet)
In this issue, we highlight work from Larson and Bement that describes an automated imaging software to track spindle dynamics during mitosis, a study by Lisse and Rieger that shows how IKKα promotes keratinocyte migration during wound repair, and a report by Baldwin and colleagues that shows how STAT3 fine tunes cytosolic DNA-induced gene expression.
March 2017: FEBS Journal
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