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https://www.readbyqxmd.com/read/29342089/chitosan-gel-to-treat-pressure-ulcers-a-clinical-pilot-study
#1
Virginia Campani, Eliana Pagnozzi, Ilaria Mataro, Laura Mayol, Alessandra Perna, Floriana D'Urso, Antonietta Carillo, Maria Cammarota, Maria Chiara Maiuri, Giuseppe De Rosa
Chitosan is biopolymer with promising properties in wound healing. Chronic wounds represent a significant burden to both the patient and the medical system. Among chronic wounds, pressure ulcers are one of the most common types of complex wound. The efficacy and the tolerability of chitosan gel formulation, prepared into the hospital pharmacy, in the treatment of pressure ulcers of moderate severity were evaluated. The endpoint of this phase II study was the reduction of the area of the lesion by at least 20% after four weeks of treatment...
January 17, 2018: Pharmaceutics
https://www.readbyqxmd.com/read/29340130/mechanism-action-of-platelets-and-crucial-blood-coagulation-pathways-in-hemostasis
#2
REVIEW
Mercy Halleluyah Periayah, Ahmad Sukari Halim, Arman Zaharil Mat Saad
Blood is considered to be precious because it is the basic necessity for health; our body needs a steady provision of oxygen, supplied via blood, to reach billions of tissues and cells. Hematopoiesis is the process that generates blood cells of all lineages. However, platelets are the smallest blood component produced from the very large bone marrow cells called megakaryocytes and they play a fundamental role in thrombosis and hemostasis. Platelets contribute their hemostatic capacity via adhesion, activation and aggregation, which are triggered upon tissue injury, and these actions stimulate the coagulation factors and other mediators to achieve hemostasis...
October 1, 2017: International Journal of Hematology-oncology and Stem Cell Research
https://www.readbyqxmd.com/read/29340060/assessment-of-antimicrobial-and-wound-healing-effects-of-brevinin-2ta-against-the-bacterium-klebsiella-pneumoniae-in-dermally-wounded-rats
#3
Siqin Liu, Qilin Long, Yang Xu, Jun Wang, Zhongwei Xu, Lei Wang, Mei Zhou, Yuxin Wu, Tianbao Chen, Chris Shaw
Antimicrobial peptides (AMPs) are regarded as promising alternatives for antibiotics due to their inherent capacity to prevent microbial drug resistance. Amphibians are rich source of bioactive molecules, which provide numerous AMPs with various structures as drug candidates. Here, we isolated and identified a novel AMP Brevinin-2Ta (B-2Ta) from the skin secretion of the European frog, Pelophylax kl. esculentus. In vitro studies revealed that it showed broad antimicrobial activities against S. aureus, E. coli and C...
December 19, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339925/mir-136-targets-mien1-and-involves-the-metastasis-of-colon-cancer-by-suppressing-epithelial-to-mesenchymal-transition
#4
Haipeng Ren, Yuanling Qi, Xiaoyan Yin, Jianfeng Gao
MIEN1 is a novel oncogene, and it involves tumor progression in various cancer types, including colon cancer. However, the definite molecular mechanisms of MIEN1 in colon cancer progression remain to be completely elucidated. In the present study, bioinformatics prediction showed that miR-136 could be an upstream regulator of MIEN1; a luciferase assay and Western blot assay revealed that miR-136 negatively regulates MIEN1 expression via directly targeting its 3'-untranslated region sequence. Moreover, a functional assay using wound healing and transwell invasion showed that overexpressed miR-136 inhibited cell migration and invasion, and overexpression of MIEN1 partly rescued the above-mentioned effects of miR-136 in colon cancer cells...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29339732/glyburide-and-retinoic-acid-synergize-to-promote-wound-healing-by-anti-inflammation-and-rip140-degradation
#5
Yi-Wei Lin, Pu-Ste Liu, Kasey Ah Pook, Li-Na Wei
Chronic inflammation underlies the development of metabolic diseases and individuals with metabolic disease often also suffer from delayed wound healing due to prolonged inflammation. Resolving inflammation provides a therapeutic strategy in treating metabolic diseases. We previously showed that during an anti-inflammatory response when macrophages were alternatively (M2) polarized, retinoic acid (RA) dramatically activated arginase 1 gene (Arg1), a gene crucial for wound healing. Here we report that a widely used sulfonylurea drug for type 2 diabetes mellitus (T2DM), glyburide, enhances the anti-inflammatory response and synergizes with RA to promote wound healing...
January 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29339718/injury-activated-glial-cells-promote-wound-healing-of-the-adult-skin-in-mice
#6
Vadims Parfejevs, Julien Debbache, Olga Shakhova, Simon M Schaefer, Mareen Glausch, Michael Wegner, Ueli Suter, Una Riekstina, Sabine Werner, Lukas Sommer
Cutaneous wound healing is a complex process that aims to re-establish the original structure of the skin and its functions. Among other disorders, peripheral neuropathies are known to severely impair wound healing capabilities of the skin, revealing the importance of skin innervation for proper repair. Here, we report that peripheral glia are crucially involved in this process. Using a mouse model of wound healing, combined with in vivo fate mapping, we show that injury activates peripheral glia by promoting de-differentiation, cell-cycle re-entry and dissemination of the cells into the wound bed...
January 16, 2018: Nature Communications
https://www.readbyqxmd.com/read/29339554/synthetic-biology-strategies-for-improving-microbial-synthesis-of-green-biopolymers
#7
Lisa A Anderson, M Ahsanul Islam, Kristala L J Prather
Polysaccharide-based biopolymers have many material properties relevant to industrial and medical uses, including as drug delivery agents, wound healing adhesives, and food additives and stabilizers. Traditionally, polysaccharides are obtained from natural sources. Microbial synthesis offers an attractive alternative for sustainable production of tailored biopolymers. Here, we review synthetic biology strategies for select "green" biopolymers: cellulose, alginate, chitin, chitosan, and hyaluronan. Microbial production pathways, opportunities for pathway yield improvements, and advances in microbial engineering of biopolymers in various hosts are discussed...
January 16, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29339283/hydroxyethyl-cellulose-hydrogel-for-wound-dressing-fabrication-characterization-and-in-vitro-evaluation
#8
Gomaa F El Fawal, Marwa M Abu-Serie, Mohamed A Hassan, Mohamed S Elnouby
In this study, new hydrogel membranes were developed based on hydroxyethyl cellulose (HEC) supplemented with tungsten oxide for further implementing in wound treatment. HEC hydrogel membranes were fabricated and crosslinked using citric acid (CA). Various tests were carried out including FTIR, XRD, porosity measurements, swelling, mechanical properties, gel fraction, and thermal gravimetric analysis to evaluate the efficiency of the prepared membranes as wound dressing material. In addition, wound healing activity of the examined membranes for human dermal fibroblast cell line was investigated employing in vitro scratching model...
January 12, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29338773/chemokine-ligand-receptor-interactions-critically-regulate-cutaneous-wound-healing
#9
Erich Bünemann, Norman-Philipp Hoff, Bettina Alexandra Buhren, Ulrike Wiesner, Stephan Meller, Edwin Bölke, Anja Müller-Homey, Robert Kubitza, Thomas Ruzicka, Albert Zlotnik, Bernhard Homey, Peter Arne Gerber
BACKGROUND: Wound healing represents a dynamic process involving directional migration of different cell types. Chemokines, a family of chemoattractive proteins, have been suggested to be key players in cell-to-cell communication and essential for directed migration of structural cells. Today, the role of the chemokine network in cutaneous wound healing is not fully understood. Unraveling the chemokine-driven communication pathways in this complex process could possibly lead to new therapeutic strategies in wound healing disorders...
January 16, 2018: European Journal of Medical Research
https://www.readbyqxmd.com/read/29338333/endoscopic-transfer-of-flexor-hallucis-longus-tendon-for-chronic-achilles-tendon-rupture-technical-aspects-and-short-time-experiences
#10
Elisabeth Ellingsen Husebye, Marius Molund, Kjetil Harald Hvaal, Are Haukåen Stødle
BACKGROUND: Chronic Achilles tendon ruptures can lead to reduced power of plantar flexion in the ankle with impaired gait ability. The open 1- or 2-incision technique for flexor hallucis longus transfer has proven good functional outcome but has the disadvantage of relatively extensive surgery performed at a vulnerable location. To reduce the risk of soft tissue problems, the flexor hallucis longus transfer can be performed endoscopically. MATERIAL AND METHOD: An endoscopic technique for flexor hallucis longus transfer is presented together with the experiences from the first six patients operated with this method...
January 1, 2018: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/29338309/oral-microbiota-reduce-wound-healing-capacity-of-epithelial-monolayers-irrespective-of-the-presence-of-5-fluorouracil
#11
Eline Vanlancker, Barbara Vanhoecke, Tom Sieprath, Janie Bourgeois, Annelore Beterams, Barbara De Moerloose, Winnok H De Vos, Tom Van de Wiele
Oral mucositis is still one of the most painful side effects of chemotherapeutic treatment and a mounting body of evidence suggests a key role for the oral microbiome in mucositis development. However, the underlying mechanisms remain elusive. In this work, we have investigated the interactions between the host, the microbiome, and chemotherapeutic treatments in more detail. The effect of 5-fluorouracil, commonly inducing mucositis, was assessed on a co-culture model that consists of an epithelial cell layer and a biofilm derived from oral microbiota from different types of samples (saliva, buccal swabs and tongue swabs) and donors (healthy individuals and patients suffering from mucositis)...
January 1, 2018: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29338284/healing-invisible-wounds-have-we-done-enough-to-help-the-victims-of-wartime-rape
#12
Mevludin Hasanović
No abstract available.
November 2017: Acta Medica Academica
https://www.readbyqxmd.com/read/29337327/modulating-inflammation-in-a-cutaneous-chronic-wound-model-by-il-10-released-from-collagen-silica-nanocomposites-via-gene-delivery
#13
Xiaolin Wang, Thibaud Coradin, Christophe Hélary
Cutaneous chronic wounds remain a major clinical challenge which requires the development of novel wound dressings. Previously, we showed that collagen-silica nanocomposites consisting of polyethyleneimine (PEI)-DNA complexes associated with silica nanoparticles (SiNP), collagen hydrogel and 3T3 fibroblasts, can work as a local "cell factory". Indeed, the "in-gel" transfection leads to a sustained production and release of biomolecules. Herein, we further explored the possibility for nanocomposites to deliver interleukin-10 (IL-10), a potent anti-inflammatory cytokine, which favors tissue repair...
January 16, 2018: Biomaterials Science
https://www.readbyqxmd.com/read/29337244/mir-142-5p-act-as-an-oncogenic-microrna-in-colorectal-cancer-clinicopathological-and-functional-insights
#14
Farhadul Islam, Vinod Gopalan, Jelena Vider, Cu-Tai Lu, Alfred K-Y Lam
OBJECTIVES: miR-142-5p was noted aberrantly expressed and plays important roles in different pathophysiological conditions in human. The present study aims to examine the expression of miR-142-5p and its association with clinicopathological factors in a large cohort of patients with colorectal cancer. In addition, the cellular effects of miR-142-5p and its interacting targets in colon cancer cells were investigated. METHODS: Expression of miR-142-5p in colorectal cancer tissues (n=125) and colon cancer cell lines were analysed using real-time polymerase chain reaction...
January 11, 2018: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/29337237/uridine-5-triphosphate-partially-blocks-differentiation-signals-and-favors-a-more-repair-state-in-cultured-rat-schwann-cells
#15
Marta Palomo-Guerrero, Jose Miguel Cosgaya, Alejandro Gella, Núria Casals, Carmen Grijota-Martinez
Schwann cells (SCs) play a key role in peripheral nerve regeneration. After damage, they respond acquiring a repair phenotype that allows them to proliferate, migrate and redirect axonal growth. Previous studies have shown that Uridine-5'-Triphosphate (UTP) and its purinergic receptors participate in several pathophysiological responses in the nervous system. Our group has previously described how UTP induces the migration of a Schwannoma cell line and promotes wound healing. These data suggest that UTP participates in the signaling involved in the regeneration process...
January 11, 2018: Neuroscience
https://www.readbyqxmd.com/read/29336904/bypass-versus-endovascular-intervention-for-healing-ischemic-foot-wounds-secondary-to-tibial-arterial-disease
#16
Abhisekh Mohapatra, Jon C Henry, Efthimios D Avgerinos, Aureline Boitet, Rabih A Chaer, Michel S Makaroun, Steven A Leers, Eric S Hager
OBJECTIVE: Pedal (inframalleolar) bypass is a long-standing therapy for tibial arterial disease in patients with ischemic tissue loss. Endovascular tibial intervention is an appealing alternative with lower risks of perioperative mortality or complications. Our objective was to compare the effectiveness of these two treatment modalities with respect to patency and limb-related clinical outcomes. METHODS: We performed a retrospective chart review of patients presenting between 2006 and 2013 with ischemic foot wounds and infrapopliteal arterial disease who underwent a revascularization procedure (either open surgical bypass to an inframalleolar target or endovascular tibial intervention)...
January 11, 2018: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29336778/damage-induced-reactive-oxygen-species-regulate-vimentin-and-dynamic-collagen-based-projections-to-mediate-wound-repair
#17
Danny LeBert, Jayne M Squirrell, Chrissy Freisinger, Julie Rindy, Netta Golenberg, Grace Frecentes, Angela Gibson, Kevin W Eliceiri, Anna Huttenlocher
Tissue injury leads to early wound-associated reactive oxygen species (ROS) production that mediate tissue regeneration. To identify mechanisms that function downstream of redox signals that modulate regeneration, a vimentin reporter of mesenchymal cells was generated by driving GFP from the vimentin promoter in zebrafish. Early redox signaling mediated vimentin reporter activity at the wound margin. Moreover, both ROS and vimentin were necessary for collagen production and reorganization into projections at the leading edge of the wound...
January 16, 2018: ELife
https://www.readbyqxmd.com/read/29336522/continued-root-maturation-despite-persistent-apical-periodontitis-of-immature-permanent-teeth-after-failed-regenerative-endodontic-therapy
#18
Louis M Lin, Sahng G Kim, Gabriela Martin, Bill Kahler
Three immature permanent teeth with pulp necrosis and apical periodontitis were treated with regenerative endodontic therapy (RET), which included root canal disinfection with sodium hypochlorite irrigation, intra-canal medication with calcium hydroxide paste, 17% EDTA rinse, induction of periapical bleeding into the canal, collagen matrix and MTA coronal seal, and composite resin restoration of access cavities. After different periods of follow-up, it was observed that continued root maturation, especially apical closure occurred despite persistent apical periodontitis of immature permanent teeth after failed RET...
January 16, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
https://www.readbyqxmd.com/read/29336493/n-terminal-cu-binding-motifs-xxx-zzz-his-atcun-and-xxx-his-and-their-derivatives-chemistry-biology-and-medicinal-applications
#19
Peter Faller, Paulina Gonzalez, Karolina Bossak, Ewelina Stefaniak, Christelle Hureau, Laurent Raibaut, Wojciech Bal
Peptides and proteins with N-terminal amino acid sequences NH2-Xxx-His (XH) and NH2-Xxx-Zzz-His (XZH) form well established high affinity CuII-complexes. Key examples are Asp-Ala-His (in serum albumin) and Gly-His-Lys, the wound healing factor. This opens a straightforward way to add a high affinity CuII-binding site to almost any peptide or protein, by chemical or recombinant approaches. Thus, these motifs, NH2-Xxx-Zzz-His in particular, have been used to equip peptides and proteins with a multitude of functions based on the redox activity of Cu, including nuclease, protease, glycosidase, or oxygen activation, useful in anticancer or antimicrobial drugs...
January 16, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29336265/efficacy-of-aloe-vera-plantago-major-gel-in-diabetic-foot-ulcer-a-randomized-double-blind-clinical-trial
#20
Younes Najafian, Zahra Mazloum Khorasani, Mona Najaf Najafi, Shokouhsadat Hamedi, Marjan Mahjour, Zohre Feyzabadi
BACKGROUND: Diabetic foot ulcer (DFU) is one of the most common complications of diabetic patients. Mostly, non-healing DFU leads to infection, gangrene, amputation and even death. High costs and poor healing of the wounds need a new treatment such as alternative medicine. So, the aim of this study was to evaluate the efficacy of Aloe vera/ Plantago major gel (Plantavera gel) in healing of DFU. METHODS: Forty patients with DFU enrolled in a double-blind randomized clinical trial...
January 14, 2018: Current Drug Discovery Technologies
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