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Wound Repair

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https://www.readbyqxmd.com/read/28730545/platelet-first-responders-in-wound-response-cancer-and-metastasis
#1
REVIEW
David G Menter, Scott Kopetz, Ernest Hawk, Anil K Sood, Jonathan M Loree, Paolo Gresele, Kenneth V Honn
Platelets serve as "first responders" during normal wounding and homeostasis. Arising from bone marrow stem cell lineage megakaryocytes, anucleate platelets can influence inflammation and immune regulation. Biophysically, platelets are optimized due to size and discoid morphology to distribute near vessel walls, monitor vascular integrity, and initiate quick responses to vascular lesions. Adhesion receptors linked to a highly reactive filopodia-generating cytoskeleton maximizes their vascular surface contact allowing rapid response capabilities...
July 20, 2017: Cancer Metastasis Reviews
https://www.readbyqxmd.com/read/28726587/repair-of-tympanic-membrane-perforations-with-customized-bioprinted-ear-grafts-using-chinchilla-models
#2
Che-Ying Kuo, Emmanuel Wilson, Andrew Fuson, Nidhi Gandhi, Reza Monfaredi, Audrey Jenkins, Maria Romero, Marco Santoro, John P Fisher, Kevin Cleary, Brian Reilly
The goal of this work is to develop an innovative method that combines bioprinting and endoscopic imaging to repair tympanic membrane perforations (TMPs). TMPs are a serious health issue because they can lead to both conductive hearing loss and repeated otitis media. TMPs occur in 3 to 5% of cases after ear tube placement as well as in cases of acute otitis media (the second most common infection in pediatrics), chronic otitis media with or without cholesteatoma, or as a result of barotrauma to the ear. About 55,000 tympanoplasties, the surgery performed to reconstruct TMPs, are performed every year and the commonly used cartilage grafting technique has a success rate between 43% to 100%...
July 20, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28726148/first-human-use-of-hybrid-synthetic-biologic-mesh-in-ventral-hernia-repair-a-multicenter-trial
#3
James G Bittner, Kevin El-Hayek, Andrew T Strong, Melissa Phillips LaPinska, Jin S Yoo, Eric M Pauli, Matthew Kroh
BACKGROUND: Mesh options for reinforcement of ventral/incisional hernia (VIH) repair include synthetic or biologic materials. While each material has known advantages and disadvantages, little is understood about outcomes when these materials are used in combination. This multicenter study reports on the first human use of a novel synthetic/biologic hybrid mesh (Zenapro(®) Hybrid Hernia Repair Device) for VIH repair. METHODS: This prospective, multicenter post-market clinical trial enrolled consecutive adults who underwent elective VIH repair with hybrid mesh placed in the intraperitoneal or retromuscular/preperitoneal position...
July 19, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28725521/naso-or-orbitocutaneous-fistulas-after-free-flap-reconstruction-of-orbital-exenteration-defects-retrospective-study-systematic-review-and-meta-analysis
#4
Patrick Tassone, Kurren S Gill, David Hsu, Gurston Nyquist, Howard Krein, Jurij R Bilyk, Anna P Murchison, James J Evans, Ryan N Heffelfinger, Joseph M Curry
Objective  Naso- or orbitocutaneous fistula (NOF) is a challenging complication of orbital exenteration, and it often requires surgical repair. We sought to identify the incidence and risk factors for NOF after orbital exenteration. Study Design  Retrospective chart review, systematic review, meta-analysis. Setting  Tertiary care center. Participants  Patients undergoing free flap reconstruction following orbital exenteration. Records were reviewed for clinicopathologic data, operative details, and outcomes...
August 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28725488/generation-and-analysis-of-spheroids-from-human-primary-skin-myofibroblasts-an-experimental-system-to-study-myofibroblasts-deactivation
#5
Giuseppina Granato, Maria R Ruocco, Antonino Iaccarino, Stefania Masone, Gaetano Calì, Angelica Avagliano, Valentina Russo, Claudio Bellevicine, Gaetano Di Spigna, Giuseppe Fiume, Stefania Montagnani, Alessandro Arcucci
Myofibroblasts are activated fibroblasts involved in tissue repair and cancer. They are characterized by de novo expression of α-smooth muscle actin (α-SMA), immunoregulatory phenotype and paracrine interaction with normal and tumorigenic cells leading to cell proliferation. At the end of wound-healing myofibroblasts undergo apoptotic cell death, whereas in vitro-activated fibroblasts are also subjected to a programmed necrosis-like cell death, termed nemosis, associated with cyclooxygenase-2 (COX-2) expression induction and inflammatory response...
2017: Cell Death Discovery
https://www.readbyqxmd.com/read/28723719/clinical-application-of-a-transurethral-holmium-laser-excision-of-exposed-polypropylene-mesh-at-lower-urinary-tract-single-surgeon-experience-with-long-term-follow-up
#6
Chan Ho Lee, Ja Yoon Ku, Kyoung Lee, Jeong Zoo Lee, Dong Gil Shin
PURPOSE: The aim of this study was to evaluate the clinical application of a transurethral holmium laser excision of exposed polypropylene mesh as an effective minimally invasive surgical approach in patients with lower urinary tract mesh erosion following the transvaginal placement of polypropylene mesh. METHODS: A retrospective analysis was conducted on the data of 22 patients with exposed polypropylene mesh in the lower urinary tract that was managed using the transurethral holmium laser technique...
July 19, 2017: Female Pelvic Medicine & Reconstructive Surgery
https://www.readbyqxmd.com/read/28717295/animal-inflicted-maxillofacial-injuries-treatment-modalities-and-our-experience
#7
Anjani Kumar Yadav, Mehul Rajesh Jaisani, Leeza Pradhan, Ashok Dongol, Arpita Singh, Pradeep Acharya, Alok Sagtani
INTRODUCTION: Animal inflicted injuries to the face and neck are becoming much more common as people lavish affection on pets. Injuries caused by animal attacks to the face can cause complex injuries to soft and hard tissues, presented as perforations, lacerations, crushes, avulsion or fractures. An uncountable number of bacteria and virus can be found in such injuries, with a potential pathological effect to humans, regarding infections. Although the infection rate is low due to excellent blood supply to face, the injuries have disfiguring effect with possible psychological repercussion to the patients...
September 2017: Journal of Maxillofacial and Oral Surgery
https://www.readbyqxmd.com/read/28716748/a-transparent-wound-dressing-based-on-bacterial-cellulose-whisker-and-poly-2-hydroxyethyl-methacrylate
#8
Zeng Di, Zhijun Shi, Muhammad Wajid Ullah, Sixiang Li, Guang Yang
The current study was aimed to develop a transparent wound dressing comprised of bacterial cellulose (BC) and poly (2-hydroxyethyl methacrylate) (PHEMA) hydrogel coated with silver (Ag) nanoparticles. Briefly, different concentrations of BC whiskers (BCWs) were added into the HEMA solution to form PHEMA/BCWs hydrogel with volume ratio of monomer HEMA and BCWs as 7:3 and 1:1. The addition of BCWs into PHEMA matrix improved its equilibrium water content and light transmittance about 20%-40% and 10%, respectively...
July 14, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28715921/the-role-of-secreted-heat-shock-protein-90-hsp90-in-wound-healing-how-could-it-shape-future-therapeutics
#9
Jiacong Guo, Cheng Chang, Wei Li
Defects in tissue repair or wound healing pose a clinical, economic and social problem worldwide. Despite decades of studies, there have been few effective therapeutic treatments. Areas covered: We discuss the possible reasons for why growth factor therapy did not succeed. We point out the lack of human disorder-relevant animal models as another blockade for therapeutic development. We summarize the recent discovery of secreted heat shock protein-90 (Hsp90) as a novel wound healing agent. Expert commentary: Wound healing is a highly complex and multistep process that requires participations of many cell types, extracellular matrices and soluble molecules to work together in a spatial and temporal fashion within the wound microenvironment...
July 18, 2017: Expert Review of Proteomics
https://www.readbyqxmd.com/read/28715312/new-directions-for-treating-bleeding-disorders-from-tests-for-platelet-strength-to-malleable-hydrogel-research-is-advancing-understanding-diagnosis-and-treatment-of-this-difficult-condition
#10
Mary Bates
Most people don't worry about small cuts or wounds, because their bodies form clots to stop the bleeding. This process, called coagulation or hemostasis, requires certain blood cells, platelets, and protein clotting factors to interact correctly and form a clot to stanch the bleeding and begin repair of the damaged blood vessel.
July 2017: IEEE Pulse
https://www.readbyqxmd.com/read/28714933/macrophage-phenotypes-regulate-scar-formation-and-chronic-wound-healing
#11
REVIEW
Mark Hesketh, Katherine B Sahin, Zoe E West, Rachael Z Murray
Macrophages and inflammation play a beneficial role during wound repair with macrophages regulating a wide range of processes, such as removal of dead cells, debris and pathogens, through to extracellular matrix deposition re-vascularisation and wound re-epithelialisation. To perform this range of functions, these cells develop distinct phenotypes over the course of wound healing. They can present with a pro-inflammatory M1 phenotype, more often found in the early stages of repair, through to anti-inflammatory M2 phenotypes that are pro-repair in the latter stages of wound healing...
July 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28708657/reconstruction-of-facial-cervical-scars-with-pedicled-expanded-deltopectoral-flap
#12
Xianjie Ma, Yang Li, Weiyang Li, Chaohua Liu, Hengxin Liu, Ping Xue, Jiangbo Cui
The facial-cervical scars bring the suffering to the patients both physically and mentally. Choosing a proper donor soft tissue is always one of the critical issues, especially to Asian patients. Among the common used donor sites, the deltopectoral site was conceived as the most suitable donor tissue for the reconstruction in face and neck for its adjacent site and match in color and texture. There were 220 patients with facial-cervical scars reconstructed by the pedicled expanded deltopectoral flap between 2007 through 2015 in the authors' hospital...
July 13, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28707264/evaluation-of-propylene-glycol-nanoliposomes-containing-curcumin-on-burn-wound-model-in-rat-biocompatibility-wound-healing-and-anti-bacterial-effects
#13
Nooshin Kianvash, Abbas Bahador, Maryam Pourhajibagher, Homanaz Ghafari, Vahid Nikoui, Sayed Mehdi Rezayat, Ahmad Reza Dehpour, Alireza Partoazar
Curcumin is an effective wound healing agent in burn therapy, but due to its low bioavailability, it is required to be formulated for topical therapy. Liposomal nanocarriers are developed as stable and efficient dermal delivery systems. In this study, we prepared curcumin-propylene glycol liposomes (Cur-PgL) to treat animals subjected to second degree burns. The characterization tests confirmed the production of monodisperse nanoliposomes of average size of about 145 nm with high entrapment efficiency percentage and a sustained release behavior...
July 13, 2017: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/28705238/interleukin-3-enhances-the-migration-of-human-mesenchymal-stem-cells-by-regulating-expression-of-cxcr4
#14
Amruta Barhanpurkar-Naik, Suhas T Mhaske, Satish T Pote, Kanupriya Singh, Mohan R Wani
BACKGROUND: Mesenchymal stem cells (MSCs) represent an important source for cell therapy in regenerative medicine. MSCs have shown promising results for repair of damaged tissues in various degenerative diseases in animal models and also in human clinical trials. However, little is known about the factors that could enhance the migration and tissue-specific engraftment of exogenously infused MSCs for successful regenerative cell therapy. Previously, we have reported that interleukin-3 (IL-3) prevents bone and cartilage damage in animal models of rheumatoid arthritis and osteoarthritis...
July 14, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28704830/sirtuins-in-skin-and-skin-cancers
#15
Liz Mariely Garcia-Peterson, Melissa Jean Wilking-Busch, Mary Ann Ndiaye, Christine Gaby Azer Philippe, Vijayasaradhi Setaluri, Nihal Ahmad
The sirtuins are a family of proteins that comprise class III of the histone deacetylases. These NAD+-dependent proteins have been found to be intricately involved in a variety of important and skin-relevant cellular functions and processes, including aging, UV damage response, oxidative stress, and wound repair. In addition, recent research is unraveling the role of sirtuins in a variety of skin diseases, including melanoma and nonmelanoma skin cancers. In this review, we provide a discussion on the potential roles and implications of different sirtuins in skin-specific cellular processes, which may have relevance to skin health and skin diseases...
July 14, 2017: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/28704719/biochemical-and-functional-analysis-of-corticotropin-releasing-factor-purified-from-an-aqueous-extract-of-human-placenta-used-as-wound-healer
#16
Namrata Singh, Debasish Bhattacharyya
Human placental extract constitutes of innumerable therapeutically important components mostly used in wound healing arising from the skin and burn injuries. However, there is still some bioactive present in the placental extracts yet to be characterized to better under the complex process of wound healing mediated by the placental extract. In this study, the presence of corticotropin releasing factor (CRF) in an aqueous extract of human placenta was detected and quantified by dot blot and CRF-ELISA immunoassay kit respectively...
June 28, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28702985/photobiomodulation-with-polarized-light-in-the-treatment-of-cutaneous-and-mucosal-ulcerative-lesions
#17
S E Aragona, F R Grassi, G Nardi, J Lotti, G Mereghetti, E Canavesi, E Equizi, A M Puccio, G Gianazza, T Lotti, I Morisi
In recent decades, regenerative medicine has achieved an important evolution at both a conceptual level and scientific production, which explains the current and future possibilities of therapy and daily clinical practice. The main aim of regenerative medicine is the complex system of repair/regeneration. The current literature on the subject demonstrates the advantage of visible light therapy for skin injuries and diseases with the photobiomodulation in which light at low energy levels modulates intra- and extra-cellular photoreceptors by molecular and cellular processes that can stimulate both anti-inflammatory mechanisms and cell proliferative response...
July 13, 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28702977/laser-treatment-of-leg-ulcers-selected-concepts
#18
N Zerbinati, G Tchernev, U Wollina, J Lotti, K França, T Lotti, S Gianfaldoni
An overview on different laser devices, available for the treatment of the different phases of wound healing: debridement, wound repair and scars correction.
July 13, 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28702969/bi-layered-collagen-nano-structured-membrane-prototype-collagen-matrix-10826%C3%A2-for-soft-tissue-regeneration-in-rabbits-an-in-vivo-ultra-structural-study-of-the-early-healing-phase
#19
D De Santis, G B Menchini Fabris, J Lotti, C Palumbo, M Ferretti, R Castellani, T Lotti, G Zanotti, F Gelpi, C Covani, P F Nocini
Collagen Matrix (CM) 10826 is a nanostructured bi-layered collagen membrane obtained from type I and III porcine collagen, which in vitro has shown to have the potential to be a substitute and/or stimulant for soft oral tissue regeneration. The objective of this study was to evaluate the in vivo potential and safety of this membrane for soft tissue regeneration in the early stage of wound healing. Two soft tissue wounds (test and control) were created on the back skin of 5 rabbits (female New Zealand White Rabbits specific pathogen free)...
July 13, 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28700779/corneal-wound-repair-after-rose-bengal-and-green-light-crosslinking-clinical-and-histologic-study
#20
Patricia Gallego-Muñoz, Lucía Ibares-Frías, Elvira Lorenzo, Susana Marcos, Pablo Peréz-Merino, Nandor Bekesi, Irene E Kochevar, M Carmen Martínez-García
Purpose: To evaluate corneal wound healing after treatment with a new collagen crosslinking protocol using rose bengal dye and green light (RGX). Methods: One cornea of 20 New Zealand rabbits was de-epithelialized (DE) in an 8-mm diameter circle and, in another group (n = 25), the DE corneas were then stained with 0.1% rose bengal for 2 minutes and exposed to green light (532 nm) for 7 minutes (RGX). The contralateral eyes without treatment acted as controls. The animals were clinically followed including fluorescein staining and pachymetry...
July 1, 2017: Investigative Ophthalmology & Visual Science
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