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https://www.readbyqxmd.com/read/28096092/initiation-of-acute-graft-versus-host-disease-by-angiogenesis
#1
Katarina Riesner, Yu Shi, Angela Jacobi, Martin Kraeter, Martina Kalupa, Aleixandria McGearey, Sarah Mertlitz, Steffen Cordes, Jens-Florian Schrezenmeier, Jörg Mengwasser, Sabine Westphal, Daniel Perez-Hernandez, Clemens Schmitt, Gunnar Dittmar, Jochen Guck, Olaf Penack
The inhibition of inflammation-associated angiogenesis ameliorates inflammatory diseases by reducing the recruitment of tissue infiltrating leukocytes. However, it is not known if angiogenesis has an active role during the initiation of inflammation or if it is merely a secondary effect occurring in response to stimuli by tissue infiltrating leukocytes. Here we show that angiogenesis precedes leukocyte infiltration in experimental models of inflammatory bowel disease and acute graft-versus-host disease (GVHD)...
January 17, 2017: Blood
https://www.readbyqxmd.com/read/28094886/the-parathyroid-hormone-family-member-tip39-interacts-with-sarco-endoplasmic-reticulum-ca-2-atpase-activity-by-influencing-calcium-homeostasis
#2
Emi Sato, Michael R Williams, James A Sanford, George L Sen, Takekuni Nakama, Shinichi Imafuku, Richard L Gallo
Darier disease (DD) is a genetic skin disease that is associated with mutations in the ATP2A2 gene encoding the type 2 sarco/endoplasmic reticulum Ca(2+) -ATPase (SERCA2). Mutations of this gene result in alterations of calcium homeostasis, abnormal epidermal adhesion and dyskeratosis. Silencing of ATP2A2 in monolayer cell culture of keratinocytes reduces desmoplakin expression at the borders of cells and impacts cell adhesion. Here, we report establishment of a three-dimensional (3D) epidermal model of DD, and use this model to evaluate peptide therapy with tuberoinfundibular peptide of 39 residues (TIP39) to normalize calcium transport...
January 17, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28090711/topical-application-of-nitrosonifedipine-a-novel-radical-scavenger-ameliorates-ischemic-skin-flap-necrosis-in-a-mouse-model
#3
Yutaka Fukunaga, Yuki Izawa-Ishizawa, Yuya Horinouchi, Eriko Sairyo, Yasumasa Ikeda, Keisuke Ishizawa, Koichiro Tsuchiya, Yoshiro Abe, Ichiro Hashimoto, Toshiaki Tamaki
Ischemic skin flap necrosis can occur in random pattern flaps. An excess amount of reactive oxygen species is generated and causes necrosis in the ischemic tissue. Nitrosonifedipine (NO-NIF) has been demonstrated to possess potent radical scavenging ability. However, there has been no study on the effects of NO-NIF on ischemic skin flap necrosis. Therefore, we evaluated the potential of NO-NIF in ameliorating ischemic skin flap necrosis in a mouse model. A random pattern skin flap (1.0 × 3.0 cm) was elevated on the dorsum of C57BL/6 mice...
January 16, 2017: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/28088473/endothelium-adhesion-molecules-icam-1-icam-2-vcam-1-and-vla-4-expression-in-leprosy
#4
Juarez de Sousa, Tinara Leila Sousa Aarão, Jorge Rodrigues de Sousa, Kelly Emi Hirai, Luciana Mota Silva, Leonidas Braga Dias, Francisca Regina Oliveira Carneiro, Hellen Thais Fuzii, Juarez Aantonio Simoes Quaresma
Leprosy triggers a complex relationship between the pathogen and host immune response. Endothelium plays an important role in this immune response by directly influencing cell migration to infected tissues. The objective of this work is to investigate the possible role of endothelium in M. leprae infection, correlating the characteristics of endothelial markers with the expression pattern of cytokines. Thirty-six skin biopsy samples were cut into 5-μm thick sections and stained with hematoxylin-eosin and Ziehl-Neelsen for morphological analysis and then submitted to immunohistochemical analysis using monoclonal antibodies against ICAM-1, ICAM-2, VCAM-1, and VLA-4...
January 11, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28075447/anti-metastatic-effect-of-rhodomyrtone-from-rhodomyrtus-tomentosa-on-human-skin-cancer-cells
#5
Malatee Tayeh, Sirinun Nilwarangoon, Wilawan Mahabusarakum, Ramida Watanapokasin
This study focused on the inhibitory effect of rhodomyrtone, a bioactive compound isolated from the leaves of Rhodomyrtus tomentosa (Aiton) Hassk., on cancer metastasis in epidermoid carcinoma A431 cells and on the verification of the underlying related molecular mechanisms of this event. We demonstrated that rhodomyrtone at the subcytotoxic concentration (0.5 and 1.5 µg/ml) exhibited pronounced inhibition of cancer metastasis by reducing cell migration, cell adhesive ability and cell invasion of A431 cells in a dose-dependent manner...
January 9, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28069919/calpain-mediated-proteolysis-of-talin-and-fak-regulates-adhesion-dynamics-necessary-for-axon-guidance
#6
Patrick C Kerstein, Kevin M Patel, Timothy M Gomez
: Guidance of axons to their proper synaptic target sites requires spatially and temporally precise modulation of biochemical signals within growth cones. Ionic calcium (Ca(2+)) is an essential signal for axon guidance that mediates opposing affects on growth cone motility. The diverse effects of Ca(2+) arise from the precise localization of Ca(2+) signals into microdomains containing specific Ca(2+) effectors. For example, differences in the mechanical and chemical composition of the underlying substrata elicit local Ca(2+) signals within growth cone filopodia that regulate axon guidance through activation of the protease calpain...
January 9, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28067963/wetting-and-adhesion-evaluation-of-cosmetic-ingredients-and-products-correlation-of-in-vitro-in-vivo-contact-angle-measurements
#7
P Capra, G Musitelli, P Perugini
OBJECTIVE: The aim of this work was to use the contact angle measurement in order to predict the behavior of ingredients and finished cosmetic products on skin to improve skin feel and product texture. METHOD: Different classes of cosmetic ingredients and formulations were evaluated. The contact angle measurements were carried out by the sessile drop methodusing an apparatus, designed and set up in laboratory. Glass, Teflon and human skin were the reference substrates...
January 9, 2017: International Journal of Cosmetic Science
https://www.readbyqxmd.com/read/28064226/salivary-samples-for-the-diagnosis-of-pemphigus-vulgaris-using-the-biochip-approach-a-pilot-study
#8
Irene Russo, Andrea Saponeri, Anna Michelotto, Mauro Alaibac
Pemphigus vulgaris (PV) is a rare autoimmune intraepithelial blistering skin disease characterized by the presence of circulating autoantibodies against desmoglein 3 (DSG3) and desmoglein 1 (DSG1), resulting in loss of the normal epithelial cell-to-cell adhesion, through a process called acantholysis. In recent years, a BIOCHIP-based indirect immunofluorescence technique for the determination of anti-DSG3 and anti-DSG1 autoantibodies has been described. Even though, the use of saliva anti-DSG3 and anti-DSG1 ELISA for the diagnosis of PV has been already reported, there are no studies concerning the utilization of saliva by the BIOCHIP approach...
January 2017: In Vivo
https://www.readbyqxmd.com/read/28060000/embracing-the-concept-defining-the-practice-and-changing-the-outcome-setting-the-standard-for-medical-adhesive-related-skin-injury-interventions-in-woc-nursing-practice
#9
Stephanie Yates, Laurie McNichol, Steven B Heinecke, Mikel Gray
Medical adhesive-related skin injury (MARSI) is a comparatively new category of skin damage. Our current understanding of MARSI originates from an interdisciplinary consensus conference held in 2012 that generated and disseminated 25 statements pertaining to the assessment, prevention, and management of MARSI, along with gaps in research and knowledge related to this area. The 2012 MARSI Consensus Group also challenged each organization to refine the original statements to make them more relevant to their particular area of practice...
January 2017: Journal of Wound, Ostomy, and Continence Nursing
https://www.readbyqxmd.com/read/28053309/drag-reduction-through-self-texturing-compliant-bionic-materials
#10
Eryong Liu, Longyang Li, Gang Wang, Zhixiang Zeng, Wenjie Zhao, Qunji Xue
Compliant fish skin is effectively in reducing drag, thus the design and application of compliant bionic materials may be a good choice for drag reduction. Here we consider the drag reduction of compliant bionic materials. First, ZnO and PDMS mesh modified with n-octadecane were prepared, the drag reduction of self-texturing compliant n-octadecane were studied. The results show that the mesh modified by ZnO and PDMS possess excellent lipophilic and hydrophobic, thus n-octadecane at solid, semisolid and liquid state all have good adhesion with modified mesh...
January 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28040091/reconstruction-of-patellar-tendon-following-implantation-of-proximal-tibia-megaprosthesis-for-the-treatment-of-post-traumatic-septic-bone-defects
#11
Giorgio M Calori, Emilio Luigi Mazza, Luca Vaienti, Simone Mazzola, Alessandra Colombo, Luca Gala, Massimiliano Colombo
INTRODUCTION: Latest advances made in joint replacement implants allows reconstruction of entire limbs. These special prostheses or megaprostheses were originally designed for the treatment of severe oncological bone loss. Nowadays, however, the indications and applications of these devices are expanding to other orthopaedic and trauma clinical conditions. Since 2008 we have implanted 152 megaprostheses in non-oncological conditions: 87 were implanted for post-traumatic failures aseptic/septic (represented by complex non-unions and critical size bone defects); 26 total femur, 52 distal femur and 9 proximal tibia...
December 2016: Injury
https://www.readbyqxmd.com/read/28035612/transdermal-adhesive-patches-loaded-with-ketoprofen-evaluated-by-dynamic-detection-of-percutaneous-absorption
#12
Menglin Wang, Longwei Li, Junxia Xie, Yinghua Sun, Guixia Ling, Zhonggui He
Topical delivery has many benefits toward NSAIDs administration, and the best-selling transdermal preparation in 2015 was the NSAID patch MOHRUS®. Herein, we report a ketoprofen adhesive patch (KAP) and evaluate the penetration and absorption compared to MOHRUS®. Microdialysis sampling technique was applied to determine drug penetration in the dermis and subcutaneous tissue. Simultaneously, blood samples were withdrawn over time to obtain the drug absorption in plasma. The ketoprofen concentrations in the dermis, subcutaneous tissue, and plasma were compared with the commercially available patch (MOHRUS®)...
December 29, 2016: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28034734/preparation-and-evaluation-of-a-novel-dosage-form-for-onychomycosis
#13
Flavia Laffleur, Martin Ataii
Onychomycosis is a common infection of the nail caused by dermatophyte affecting mostly toenails in adults being associated with limited treatment options. In this study novel dosage forms were prepared and evaluated for their suitability in treatment of onychomycosis. Films were prepared comprising polymeric excipients such as chitosan, (hydroxypropyl)methyl cellulose, hydroxyethyl-cellulose, carboxymethylcellulose according to solvent evaporation method. Developed formulations were evaluated in terms of physical appearance, stability and adhesiveness...
December 26, 2016: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28027893/correction-of-recessive-dystrophic-epidermolysis-bullosa-by-transposon-mediated-integration-of-col7a1-in-transplantable-patient-derived-primary-keratinocytes
#14
Maria Carmela Latella, Fabienne Cocchiarella, Laura De Rosa, Giandomenico Turchiano, Manuel A F V Gonçalves, Fernando Larcher, Michele De Luca, Alessandra Recchia
Recessive dystrophic epidermolysis bullosa (RDEB) is caused by defects in type-VII collagen (C7), a protein encoded by the COL7A1 gene and essential for anchoring fibril formation at the dermal-epidermal junction. Gene therapy of RDEB is based on transplantation of autologous epidermal grafts generated from gene-corrected keratinocytes sustaining C7 deposition at the dermal-epidermal junction. Transfer of the COL7A1 gene is complicated by its very large size and repetitive sequence. We report a gene delivery approach based on the Sleeping beauty transposon, which allows integration of a full-length COL7A1 cDNA and secretion of C7 at physiological levels in RDEB keratinocytes without rearrangements or detrimental effects on their clonogenic potential...
December 24, 2016: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28024684/non-pathogenic-pemphigus-foliaceus-pf-igg-acts-synergistically-with-a-directly-pathogenic-pf-igg-to-increase-blistering-by-p38mapk-dependent-desmoglein-1-clustering
#15
Kenji Yoshida, Ken Ishii, Atsushi Shimizu, Mariko Yokouchi, Masayuki Amagai, Ken Shiraishi, Yuji Shirakata, John R Stanley, Akira Ishiko
BACKGROUND: Pemphigus foliaceus (PF) is an autoimmune blistering disease caused by autoantibodies (Abs) against desmoglein 1 (Dsg1). PF sera contain polyclonal Abs which are heterogeneous mixture of both pathogenic and non-pathogenic Abs, as shown by isolation of monoclonal Abs (mAbs). OBJECTIVE: To investigate how pathogenic and non-pathogenic anti-Dsg1 Abs contribute to blister formation in PF. METHODS: Using organ-cultured human skin, we compared the effect of a single pathogenic anti-Dsg1 IgG mAb, a single non-pathogenic anti-Dsg1 IgG mAb, and their mixture on blister formation as analyzed by histology, subcellular localization of IgG deposits and desmosomal proteins by confocal microscopy, and desmosomal structure by electron microscopy...
December 12, 2016: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28024631/gold-nanoparticle-filled-biodegradable-photopolymer-scaffolds-induced-muscle-remodeling-in-vitro-and-in-vivo-findings
#16
Adam Zsedenyi, Balazs Farkas, Gaser N Abdelrasoul, Ilaria Romano, Edina Gyukity-Sebestyen, Katalin Nagy, Maria Harmati, Gabriella Dobra, Sandor Kormondi, Gabor Decsi, Istvan Balazs Nemeth, Alberto Diaspro, Fernando Brandi, Szabolcs Beke, Krisztina Buzas
Therapeutic stem cell transplantation bears the promise of new directions in organ and tissue replacement, but a number of its difficulties and perils are also well known. Our goal was to develop a method of transplantation by which the transplanted cells remain confined to the transplantation site and induce favorable processes. With the help of mask-projection excimer laser stereolithography, 3D hybrid nanoscaffolds were fabricated from biodegradable, photocurable PPF:DEF resin with incorporated gold nanoparticles (Au NPs)...
March 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28024598/design-and-characterization-of-3d-hybrid-collagen-matrixes-as-a-dermal-substitute-in-skin-tissue-engineering
#17
Giriprasath Ramanathan, Sivakumar Singaravelu, Thangavelu Muthukumar, Sitalakshmi Thyagarajan, Paramasivan Thirumalai Perumal, Uma Tiruchirapalli Sivagnanam
The highly interconnected porous dressing material was fabricated with the utilization of novel collagen (COL-SPG) for the efficient healing of the wound. Herein, we report the fabrication of 3D collagen impregnated with bioactive extract (COL-SPG-CPE) to get rid of infection at the wound site. The resultant 3D collagen matrix was characterized physiochemically using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and mechanical property. The dressing substrate possesses the high swelling ability, increase in the porosity, in vitro enzymatic degradability and antibacterial property...
March 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28010761/research-techniques-made-simple-mouse-models-of%C3%A2-autoimmune-blistering-diseases
#18
Robert Pollmann, Rüdiger Eming
Autoimmune blistering diseases are examples of autoantibody-mediated, organ-specific autoimmune disorders. Based on a genetic susceptibility, such as a strong HLA-class II association, as yet unknown triggering factors induce the formation of circulating and tissue-bound autoantibodies that are mainly directed against adhesion structures of the skin and mucous membranes. Compared with other autoimmune diseases, especially systemic disorders, the pathogenicity of autoimmune blistering diseases is relatively well described...
January 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28008204/novel-and-recurrent-atp2a2-mutations-in-japanese-patients-with-darier-s-disease
#19
Kana Noda, Takuya Takeichi, Yusuke Okuno, Hiromichi Takama, Shunsuke Miura, Shinji Kagami, Haruko Hino, Yuki Nakamura, Yumi Fujio, Izumi Konohana, Ayako Otani, Hideki Mukai, Kazumitsu Sugiura, Masashi Akiyama
Darier's disease (DD, keratosis follicularis: OMIM#124200) is an autosomal dominant skin disorder characterized by multiple dark brown keratotic plaques and warty papules covered by thick crusts. Most cases of DD are caused by mutations in ATP2A2, which is expressed in both the skin and the brain. ATP2A2 encodes the cardiac muscle SERCA2a protein and the ubiquitously expressed SERCA2b. SERCA2 plays an important role as a calcium pump. It is thought that a mutation in ATP2A2 causes dyskeratosis and abnormality of cell-cell adhesion...
December 2016: Nagoya Journal of Medical Science
https://www.readbyqxmd.com/read/28004900/current-management-of-inguinal-false-aneurysms
#20
Kim Houlind, Jørn M Jepsen, Cristian Saicu, Sten Vammen, Johnny K Christensen, Hans Ravn
False aneurysms are formed as a result of bleeding causing a hematoma to compress the surrounding tissue. The majority of false aneurysms presenting to the vascular surgeon are caused by iatrogenic injury to an artery. Although anastomotic failure occurs, a much higher number is caused by bleeding from puncture sites after percutaeous intervention. Anticoagulative medication, low patelet counts and severely calcified vessels increase the risk of forming a false aneurysm. Experienced specialists may make the diagnosis from physical examination, but ultrasound imaging is almost always needed in order to decide for a treatment strategy...
December 22, 2016: Journal of Cardiovascular Surgery
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