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Wound Repair and Regeneration

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https://www.readbyqxmd.com/read/29453855/nerve-reinnervation-and-itch-behaviour-in-a-rat-burn-wound-model
#1
Tiam M Saffari, Barthold N Schüttenhelm, Johan W van Neck, Jan C Holstege
In this study, we investigated whether post-burn itch in rats, after a full thickness burn, is correlated to the nervous reinnervation of the burn wound area. For this purpose, we determined scratching duration (expressed as sec/hr) at 24 hours, 2, 4, 8 and 12 weeks post-burn and combined this with immunohistochemistry for protein gene product 9.5 (PGP9.5) to identify all nerve fibers, calcitonin gene related peptide (CGRP) to identify peptidergic fibers, tyrosine hydroxylase (TH) for sympathetic fibers and growth-associated protein 43 (GAP-43) for regrowing fibers...
February 17, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29453851/dicer-inactivation-stimulates-limb-regeneration-ability-in-xenopus-laevis
#2
Mengshi Zhang, Li Yang, Feng Yuan, Ying Chen, Gufa Lin
The ontogenetic decline of regeneration capacity in the anuran amphibian Xenopus makes it an excellent model for regeneration studies. However, the cause of the regeneration ability decline is not fully understood. MicroRNAs regulate animal development, and have been indicated in various regeneration situations. However, little is known about the role of microRNAs during limb regeneration in Xenopus. This study investigates the effect of Dicer, an enzyme responsible for microRNA maturation, on limb development and regeneration in Xenopus...
February 17, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29424945/in-vitro-and-in-vivo-investigation-of-a-novel-amniotic-based-chitosan-dressing-for-wound-healing
#3
Maryam Momeni, Mohammad Zarehaghighi, Mirhamed Hajimiri, Ghasemali Khorasani, Rassoul Dinarvand, Abdolhossein Nekookar, Niloofar Sodeifi, Pardis Khosravani, Niloofar Shayanasl, Marzieh Ebrahimi
It is more than a decade that amniotic membrane has been used as a wound dressing because of its anti-inflammatory, anti-microbial, anti-fibrotic, anti-scaring properties, as well as its pain relieving and epithelialization promoting features. However, amniotic membrane had limited applications because it needs to suture in surgery, is highly fragile, firmly adhere to the wound and may cause bleeding and pain when changing the bandage. This study investigated the possibility of development of a novel amniotic-based chitosan gel dressing as a potential wound repair substrate with marked efficacy...
February 9, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29418044/the-vacuolar-atpase-is-required-for-erk-dependent-wound-healing-in-the-drosophila-embryo
#4
Juan J Fraire-Zamora, Matias Simons
Epithelia have the ability to repair injuries through an evolutionary conserved wound healing mechanism. Wound healing events can be classified into the transcription-independent signals involving mobilization of ionic currents and cytoskeletal rearrangements or the transcription-dependent response with activation of repair genes. The vacuolar H+ -ATPase (V-ATPase) has been implicated in the regeneration of vertebrate structures, but the underlying cellular mechanisms remain unclear. Here, we use wounding assays on the epidermis of Drosophila embryos to assess the role of the V-ATPase in the healing response...
February 8, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29418037/constitutive-overexpression-of-periostin-delays-wound-healing-in-mouse-skin
#5
Satoshi Nunomura, Yasuhiro Nanri, Masahiro Ogawa, Kazuhiko Arima, Yasutaka Mitamura, Tomohito Yoshihara, Hidetoshi Hasuwa, Simon J Conway, Kenji Izuhara
Periostin is a matricellular protein involved in development, maintenance and regulation of tissues and organs via by binding to cell surface integrin receptors. Pathologically, periostin plays an important role in the process of wound healing: as a deficiency of the Postn gene delays wound closure and periostin is consistently upregulated in response to injury and skin diseases. However, the functional role of elevated periostin in the process of wound healing has not been tested. In this study, we generated Postn-transgenic mice under the control of the CAG promoter/enhancer to investigate the effects of constitutive overexpression of full length periostin during its pathophysiological roles...
February 8, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29381243/neural-crest-derived-cells-migrate-from-nerve-to-participate-in-achilles-tendon-remodeling
#6
Kang Xu, Xin Pan, Xuefeng Qiu, Dong Wang, Nianguo Dong, Li Yang, Song Li
During tendon injuries, nerve ingrowth is one of the earliest events of tendon repair and remodeling. Since peripheral neurons and associated cells are mostly derived from neural crest (NC) cells, we sought to investigate the role of NC-derived cells in tendon regeneration. Thus, we used Sox10-Cre/ROSA26-Flox-Red Fluorescent Protein (RFP) transgenic mice to trace these cells during tendon regeneration. After 4 weeks of Achilles tendon rupture, the injured tendon tissues were harvested for immunohistological analyses, cell isolation, and phenotype identification...
January 30, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29381242/risk-factors-for-recurrence-of-pressure-ulcers-after-defect-reconstruction
#7
Paul Wurzer, Raimund Winter, Sebastian O Stemmer, Josipa Ivancic, Patricia B Lebo, Gabriel Hundeshagen, Janos Cambiaso-Daniel, Franz Quehenberger, Lars-Peter Kamolz, David B Lumenta
BACKGROUND: Patients suffering from pressure ulcers remain to be a challenging task for nursing staff and doctors in the daily clinical management, putting - notably in the case of recurrences - additional strain on the constantly reduced resources in public health care. We aimed to assess the risk factors for the recurrence of pressure ulcers at our institution, a tertiary referral center. METHODS: In this retrospective analysis of patients admitted to our division we identified risk factors for pressure ulcer recurrence...
January 30, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29381241/evaluation-of-inguinal-vascular-surgical-scars-treated-with-closed-incisional-negative-pressure-wound-therapy-using-three-dimensional-digital-imaging-a-randomized-controlled-trial-on-bilateral-incisions
#8
Robert Svensson-Björk, Julien Hasselmann, Stefan Acosta
Purpose of the investigation: Scar formation is an important, permanent surrogate marker for wound healing. The main aim of this randomized trial was to evaluate the effects of incisional negative pressure wound therapy (iNPWT) on scar formation in uncomplicated wound healing with 3-dimensional (3D) digital imaging. BASIC PROCEDURES: Patients undergoing bilateral inguinal incisions after vascular surgery were randomized to receive iNPWT and standard dressing on separate sides. The incisional scars were documented at a median time of 808 days (range 394-1194) after surgery with 3D-photography, which were objectively evaluated by two plastic surgeons using the Stony Brook scar evaluation scale (SBSES) and a 10-point graded numeric ranking scale (NRS10)...
January 30, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29363877/improving-outcomes-in-recurrent-and-other-new-foot-ulcers-after-healed-plantar-forefoot-diabetic-ulcer
#9
LETTER
D Scott Nickerson
No abstract text is available yet for this article.
January 24, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29363857/the-influence-of-human-acute-wound-fluid-on-the-antibacterial-efficacy-of-different-antiseptic-polyurethane-foam-dressings-an-in-vitro-analysis
#10
Julian-Dario Rembe, Carolin Fromm-Dornieden, Julia Böhm, Ewa K Stuermer
Treating infected acute and/or chronic wounds still represents a major challenge in medical care. Various interactions of antiseptic dressings with wound environments regarding antimicrobial efficacy remain unclear. Therefore, this work aimed to investigate the influence of human acute wound fluid (AWF) on the antimicrobial performance of different antiseptic foam dressings in-vitro against typical bacterial wound pathogens. Eight antiseptic polyurethane foam dressings containing either a silver formulation or Polyhexamethylene-biguanide (PHMB) were assessed regarding their antimicrobial potency against Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa using a modified Time-Kill-Assay based on ISO EN 20743...
January 24, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29356190/decreased-superficial-surgical-site-infections-shortened-hospital-stay-and-improved-quality-of-live-due-to-incisional-negative-pressure-wound-therapy-after-reversal-of-double-loop-ileostomy-improved-wound-healing-due-to-incisional-negative-pressure-wound-therapy
#11
Daniel Poehnert, Nils Hadeler, Harald Schrem, Alexander Kaltenborn, Juergen Klempnauer, Markus Winny
This single-center prospective, controlled observational study investigates the impact of incisional negative pressure wound therapy on wound healing processes and its potency to prevent superficial surgical site infections after reversal of a double loop ileostomy. Furthermore, this study gains insight in socio-economic aspects, like duration of hospital stay and, for the first time, patient's quality of life during the incisional negative pressure wound treatment. To address this question, an interventional group of 24 patients treated with incisional negative pressure wound therapy (Prevena® incisional wound management system, KCI, Germany) and a respective control cohort of 25 patients treated with a standard sterile dressing were observed for 30 days in the post-operative course...
January 22, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29330940/extracorporeal-shockwave-therapy-for-treatment-of-keloid-scars
#12
Ching-Jen Wang, Jih-Yang Ko, Wen-Yi Chou, Jai-Hong Cheng, Yur-Ren Kuo
The purpose of this investigation was to study the effectiveness of extracorporeal shockwave therapy (ESWT) for the treatment of keloid scars, and compared the results with intralesional steroid injection. Thirty-nine patients were randomly divided into 22 in ESWT group and 17 in steroid group. The ESWT group received 3 ESWT treatments in 6 weeks. The steroid group received 3 intra-lesional triamcinolone injections in 6 weeks. The evaluations included gross morphology, functional outcome, local blood flow perfusion, biopsy for histopathological examination and immunohistochemical analysis...
January 13, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29328541/gm-csf-ameliorates-micro-vascular-barrier-integrity-via-pericytes-derived-ang-1-in-wound-healing
#13
Min Yan, Yange Hu, Min Yao, Shisan Bao, Yong Fang
BACKGROUND: Skin wound healing involves complex coordinated interactions of cells, tissues and mediators. Maintaining microvascular barrier integrity is one of the key events for endothelial homeostasis during wound healing. Vasodilation is observed after vasoconstriction, which causes blood vessels to become porous, facilitates leukocyte infiltration and aids angiogenesis at the wound-area, post-injury. Eventually, vessel integrity has to be re-established for vascular maturation. Numerous studies have found that granulocyte macrophage colony-stimulating factor (GM-CSF) accelerates wound healing by inducing recruitment of repair cells into the injury area and releases of cytokines...
January 12, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29328528/evaluation-of-the-use-of-recombinant-human-basic-fibroblast-growth-factor-in-combination-with-negative-pressure-wound-therapy-with-instillation-and-dwell-time-in-porcine-full-thickness-wound-model
#14
Hiroto Saijo, Deepak V Kilpadi, Sadanori Akita
NPWT with instillation and dwell time (NPWTi-d), which combines NPWT with wound irrigation, has been clinically applied as a more effective treatment than conventional NPWT. Commercially available recombinant human basic fibroblast growth factor (rh-bFGF) has been demonstrated to be beneficial for use over the wound beds. The objective of this study was to evaluate the effectiveness of combined treatment with NPWTi-d and rh-bFGF. Six pigs received 12 full-thickness excisional skin wounds and were treated with 6 different treatment groups for each pair...
January 12, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29316036/inhibition-of-ire1-results-in-decreased-scar-formation
#15
Tatiana V Boyko, Rakesh Bam, Dadi Jiang, Zhen Wang, Namrata Bhatia, Misha C Tran, Michael T Longaker, Albert C Koong, George P Yang
Wound healing is characterized by the production of large amounts of protein necessary to replace lost cellular mass and extracellular matrix. The unfolded protein response (UPR) is an important adaptive cellular response to increased protein synthesis. One of the main components of the UPR is IRE1, an ER transmembrane protein with endonuclease activity that produces the activated form of the transcription factor XBP1. Using luciferase reporter mice for Xbp1 splicing, we showed that IRE1 was up-regulated during excisional wound healing at the time in wound healing consistent with that of the proliferative phase, when the majority of protein synthesis for cellular proliferation and matrix deposition occurs...
January 8, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29316016/non-invasive-measurement-of-reepithelialization-and-microvascularity-of-suction-blister-wounds-with-benchmarking-to-histology
#16
Heidi Fhaer Larsen, Malin Glindvad Ahlström, Lise Mette Rahbek Gjerdrum, Mette Mogensen, Khaled Ghathian, Henrik Calum, Anne Lyngholm Sørensen, Julie Lyng Forman, Mark Vandeven, Marian N Holerca, Laurence Du-Thumm, Lars Nannestad Jorgensen, Magnus S Ågren
We explored use of the suction-blister wound model in the assessment of not only epidermal regeneration but also pain, the microvascular response and bacteriology. The effects of topical zinc sulfate were studied to articulate the methodologies in this double-blind trial. One epidermal suction blister (10 mm) was induced on each buttock in 30 healthy volunteers (15 females:15 males) and de-roofed on day 0. The wounds were randomized to daily treatment with 1.4% zinc sulfate shower gel (n = 20), placebo (n = 20) or control (n = 20)...
January 8, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29315980/probiotics-or-pro-healers-the-role-of-beneficial-bacteria-in-tissue-repair
#17
Jovanka Lukic, Vivien Chen, Ivana Strahinic, Jelena Begovic, Hadar Lev-Tov, Stephen C Davis, Marjana Tomic-Canic, Irena Pastar
Probiotics are beneficial microorganisms, known to exert numerous positive effects on human health, primarily in the battle against pathogens. Probiotics have been associated with improved healing of intestinal ulcers, and healing of infected cutaneous wounds. This article reviews the latest findings on probiotics related to their pro-healing properties on gut epithelium and skin. Proven mechanisms by which probiotic bacteria exert their beneficial effects include direct killing of pathogens, competitive displacement of pathogenic bacteria, reinforcement of epithelial barrier, induction of fibroblasts, and epithelial cells' migration and function...
January 8, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29315978/the-efficacy-of-basic-fibroblast-growth-factor-loaded-poly-lactic-co-glycolic-acid-nanosheet-for-mouse-wound-healing
#18
Shimpo Aoki, Mao Fujii, Toshinori Fujie, Keisuke Nishiwaki, Hiromi Miyazaki, Daizoh Saitoh, Shinji Takeoka, Tomoharu Kiyosawa, Manabu Kinoshita
Although human recombinant basic fibroblast growth factor (bFGF) is widely used for wound healing, daily treatment with bFGF is required because of its short half-life. An effective controlled-release system of bFGF is therefore desired in clinical settings. To investigate the efficacy of a bFGF-loaded nanosheet for wound healing, focusing on the controlled-release of bFGF, bFGF-loaded poly lactic-co-glycolic acid (PGLA) nanosheets were developed, and their in vitro release profile of bFGF and their in vivo efficacy for wound healing were examined...
January 8, 2018: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29240284/extracellular-matrix-stromal-vascular-fraction-gel-conditioned-medium-accelerates-wound-healing-in-a-murine-model
#19
Chengliang Deng, Yunfan He, Jingwei Feng, Ziqing Dong, Yao Yao, Hsiaopei Mok, Maohui Lin, Lu Feng
Conditioned medium (CM) is a new treatment modality in regenerative medicine and has shown a successful outcome in wound healing. We recently introduced extracellular matrix/stromal vascular fraction gel (ECM/SVF-gel), an adipose-derived stem cell and adipose native extracellular matrix-enriched product for cytotherapy. This study aimed to evaluate the effect of CM from ECM/SVF-gel (Gel-CM) on wound healing compared with the conventional CM from adipose tissue (Adi-CM) and stem cell (SVF-CM). In vitro wound healing effect of three CMs on keratinocytes and fibroblasts was evaluated in terms of proliferation property, migratory property, and extracellular matrix production...
December 14, 2017: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/29240273/endothelial-dysfunction-may-promote-keloid-growth
#20
Chikage Noishiki, Gen Takagi, Yoshiaki Kubota, Rei Ogawa
Keloid is a cutaneous fibroproliferative disorder. It results from impaired wound healing that generates persistent inflammation and extensive deposition of collagen fibers in the wound/scar. Keloids tend to be worse in hypertensive patients. The present prospective cross-sectional study assessed whether endothelial dysfunction, which occurs in hypertension, associates with keloid formation and progression. This study included randomly selected patients with keloids who were assessed for surgical keloid treatment in 2013-2014...
December 14, 2017: Wound Repair and Regeneration
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