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https://www.readbyqxmd.com/read/28208984/aquaporin-3-and-e-cadherin-expression-in-perilesional-vitiligo-skin
#1
Ola Ahmed Bakry, Magda Mostafa Hagag, Mona Abd El Halim Kandil, Wafaa Ahmed Shehata
INTRODUCTION: Vitiligo is a common dermatologic disorder with debated aetiology. Most studies focused on role of melanocytes and few investigated the role of keratinocytes in pathogenesis of the disease. AIM: To investigate the keratinocyte adhesion in perilesional vitiligo skin through the immunolocalization of Aquaporin-3 (AQP3) and E-cadherin. SETTING AND DESIGN: Sixty five subjects were selected. These included 40 cases with vitiligo and 25 age and gender-matched healthy subjects as a control group...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208086/measuring-of-quality-of-life-in-autoimmune-blistering-disorders-in-poland-validation-of-disease-specific-autoimmune-bullous-disease-quality-of-life-abqol-and-the-treatment-autoimmune-bullous-disease-quality-of-life-tabqol-questionnaires
#2
Agnieszka Kalinska-Bienias, Beata Jakubowska, Cezary Kowalewski, Dedee F Murrell, Katarzyna Wozniak
PURPOSE: Autoimmune bullous dermatoses (AIBD) are rare, severe diseases resulting from some antibodies activity against the different adhesion structures within the skin and/or mucosa. Few studies investigated quality of life (QOL) in AIBD by generic and dermatology-specific instruments, all reporting strong impact on QOL. Recently, disease-specific measurement tools have been developed: Autoimmune Bullous Disease Quality of Life (ABQOL) and Treatment of Autoimmune Bullous Disease Quality of Life (TABQOL) questionnaires...
February 13, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28194136/substance-p-and-calcitonin-gene-related-peptide-key-regulators-of-cutaneous-microbiota-homeostasis
#3
REVIEW
Awa N'Diaye, Andrei Gannesen, Valérie Borrel, Olivier Maillot, Jeremy Enault, Pierre-Jean Racine, Vladimir Plakunov, Sylvie Chevalier, Olivier Lesouhaitier, Marc G J Feuilloley
Neurohormones diffuse in sweat and epidermis leading skin bacterial microflora to be largely exposed to these host factors. Bacteria can sense a multitude of neurohormones, but their role in skin homeostasis was only investigated recently. The first study focused on substance P (SP), a neuropeptide produced in abundance by skin nerve terminals. SP is without effect on the growth of Gram-positive (Bacillus cereus, Staphylococcus aureus, and Staphylococcus epidermidis) and Gram-negative (Pseudomonas fluorescens) bacteria...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28188308/tetraspanin-8-is-a-novel-regulator-of-ilk-driven-%C3%AE-1-integrin-adhesion-and-signaling-in-invasive-melanoma-cells
#4
Manale El Kharbili, Clément Robert, Tiffany Witkowski, Emmanuelle Danty-Berger, Laetitia Barbollat-Boutrand, Ingrid Masse, Nicolas Gadot, Arnaud de la Fouchardière, Paul C McDonald, Shoukat Dedhar, François Le Naour, Françoise Degoul, Odile Berthier-Vergnes
Melanoma is well known for its propensity for lethal metastasis and resistance to most current therapies. Tumor progression and drug resistance depend to a large extent on the interplay between tumor cells and the surrounding matrix. We previously identified Tetraspanin 8 (Tspan8) as a critical mediator of melanoma invasion, whose expression is absent in healthy skin. The present study investigated whether Tspan8 may influence cell-matrix anchorage and regulate downstream molecular pathways leading to an aggressive behavior...
February 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28186503/a-novel-dlx3-pkc-integrated-signaling-network-drives-keratinocyte-differentiation
#5
Elisabetta Palazzo, Meghan D Kellett, Christophe Cataisson, Paul W Bible, Shreya Bhattacharya, Hong-Wei Sun, Anna C Gormley, Stuart H Yuspa, Maria I Morasso
Epidermal homeostasis relies on a well-defined transcriptional control of keratinocyte proliferation and differentiation, which is critical to prevent skin diseases such as atopic dermatitis, psoriasis or cancer. We have recently shown that the homeobox transcription factor DLX3 and the tumor suppressor p53 co-regulate cell cycle-related signaling and that this mechanism is functionally involved in cutaneous squamous cell carcinoma development. Here we show that DLX3 expression and its downstream signaling depend on protein kinase C α (PKCα) activity in skin...
February 10, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28186403/discretely-supported-dry-adhesive-film-inspired-by-biological-bending-behavior-for-enhanced-performance-on-rough-surface
#6
Hong Hu, Hongmiao Tian, Jinyou Shao, Xiangming Li, Yue Wang, Yan Wang, Yu Tian, Bingheng Lu
Biologically inspired dry adhesion is recently a research hot topic because of its practical significance in scientific research and instrumental technology. Yet, most of the current studies merely focus on borrowing the concept from some finer biological contact elements, but lose sight of the foundation ones that play an equally important role in the adhesion functionality. Inspired by bending behavior of the flexible foundation element of gecko (lamellar skin) in attachment motion, in this study, a new type of dry adhesive structure was proposed, wherein a mushroom-shaped micropillar array behaving as a strongly adhesive layer was engineered on a discretely-supported thin film...
February 10, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28183642/magnetic-nanoparticle-loaded-electrospun-polymeric-nanofibers-for-tissue-engineering
#7
Heng Zhang, JiYi Xia, XianLun Pang, Ming Zhao, BiQiong Wang, LingLin Yang, HaiSu Wan, JingBo Wu, ShaoZhi Fu
Magnetic nanoparticles have been one of the most attractive nanomaterials for various biomedical applications including magnetic resonance imaging (MRI), diagnostic contrast enhancement, magnetic cell separation, and targeted drug delivery. Three-dimensional (3-D) fibrous scaffolds have broad application prospects in the biomedical field, such as drug delivery and tissue engineering. In this work, a novel three-dimensional composite membrane composed of the tri-block copolymer poly(ε-caprolactone)-poly(ethylene glycol)-poly(ε-caprolactone) (PCL-PEG-PCL, PCEC) and magnetic iron oxide nanoparticles (Fe3O4 NPs) were fabricated using electrospinning technology...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28181448/efficacy-of-bubaline-fibrin-glue-on-full-thickness-pinch-and-punch-skin-grafting-in-a-pig
#8
Krittee Dejyong, Theerayuth Kaewamatawong, Pasakorn Brikshavana, Sumit Durongphongtorn
Fibrin glue, which is formed from the action of thrombin (a serine protease) on fibrinogen, has been developed for use as an adhesive to increase the success of skin graft surgery. The objective of this study was to evaluate if bubaline fibrin glue would promote skin graft survival in pigs. The grafting was divided into two steps. First, granulation wound preparation was performed in a healthy swine by creating four full-skin depth wounds (3 × 12 cm(2)) at the dorsal part of the loin area on each side...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28171813/effect-of-honeybee-stinger-and-its-microstructured-barbs-on-insertion-and-pull-force
#9
Jintian Ling, Zhenhua Song, Jiarui Wang, Keyun Chen, Jiyu Li, Shujia Xu, Lei Ren, Zhipeng Chen, Dianwen Jin, Lelun Jiang
Worker honeybee is well-known for its stinger with microscopic backward-facing barbs for self-defense. The natural geometry of the stinger enables painless penetration and adhesion in the human skin to deliver poison. In this study, Apis cerana worker honeybee stinger and acupuncture microneedle (as a barbless stinger) were characterized by Scanning Electron Microscope (SEM). The insertion and pull process of honeybee stinger into rabbit skin was performed by a self-developed mechanical loading equipment in comparison with acupuncture needle...
January 25, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28166140/500-gray-%C3%AE-irradiation-may-increase-adhesion-strength-of-lyophilized-cadaveric-split-thickness-skin-graft-to-wound-bed
#10
Lin-Gwei Wei, Chieh-Feng Chen, Chi-Hsien Wang, Ya-Chen Cheng, Chun-Chang Li, Wen-Kuan Chiu, Hsian-Jenn Wang
BACKGROUND: Human cadaveric skin grafts are considered as the "gold standard" for temporary wound coverage because they provide a more conductive environment for natural wound healing. Lyophilization, packing, and terminal sterilization with gamma-ray can facilitate the application of cadaveric split-thickness skin grafts, but may alter the adhesion properties of the grafts. In a pilot study, we found that 500 Gy γ-irradiation seemed not to reduce the adherence between the grafts and wound beds...
February 3, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28166139/novel-injury-site-targeted-fusion-protein-comprising-annexin-v-and-kunitz-inhibitor-domains-ameliorates-ischemia-reperfusion-injury-and-promotes-survival-of-ischemic-rat-abdominal-skin-flaps
#11
Victor Bong-Hang Shyu, Chung En Hsu, Chih-Jen Wen, Tze-Chein Wun, Rui Tang, Samuel Achilefu, Fu-Chan Wei, Hui-Yun Cheng
: Appropriate antithrombotic therapy is critical for successful outcomes in reconstructive microsurgical procedures involving free tissue transfer. The annexin V-6L15 (ANV-6L15) fusion protein was developed as a targeted antithrombotic reagent. Annexin V specifically binds to exposed phosphatidylserine on apoptotic or injured cells, and prevents coagulation and cell adhesion, whereas 6L15 inhibits tissue factor-VIIa pathway within the coagulation cascade. The treatment efficacy of ANV-6L15 on rat island muscle and pedicled abdominal fasciocutaneous flaps following ischemic injury and ischemia-reperfusion injury (IRI) was evaluated...
February 4, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28159347/prevention-of-periimplant-skin-inflammation-using-an-acrylic-resin-housing-with-a-tunnel-design-for-an-implant-retained-auricular-prosthesis
#12
Hai Hoang Phan, Natdhanai Chotprasert, Prana Shakya, M L Theerathavaj Srithavaj
Implant-retained auricular prostheses offer better retention than conventional adhesive retentive methods. Periimplant skin inflammation, which results from improper substructure design, poor hygiene, skin thickness, and the hot and moist environment around abutments, however, is a common complication of craniofacial implants. This article describes a technique for fabricating an acrylic resin housing design with an extended arm to improve ventilation around implants and to reduce the risk of the silicone prosthesis tearing away from the acrylic resin housing...
January 31, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28156030/er-to-golgi-blockade-of-nascent-desmosomal-cadherins-in-serca2-inhibited-keratinocytes-implications-for-darier-s-disease
#13
Ning Li, Moonhee Park, Shengxiang Xiao, Zhi Liu, Luis A Diaz
Darier's disease (DD) is an autosomal dominantly inherited skin disorder caused by mutations in SERCA2, a Ca(2+) pump that transports Ca(2+) from the cytosol to the endoplasmic reticulum (ER). Loss of desmosomes and keratinocyte cohesion is a characteristic feature of DD. Desmosomal cadherins (DC) are Ca(2+) -dependent transmembrane adhesion proteins of desmosomes, which are mislocalized in the lesional but not perilesional skin of DD. We show here that inhibition of SERCA2 by two distinct inhibitors results in accumulation of DC precursors in keratinocytes, indicating ER-to-Golgi transport of nascent DC is blocked...
February 3, 2017: Traffic
https://www.readbyqxmd.com/read/28155694/%C3%AE-1-integrin-signaling-in-asymmetric-migration-of-keratinocytes-under-mechanical-stretch-in-a-co-cultured-wound-repair-model
#14
Dongyuan Lü, Zhan Li, Yuxin Gao, Chunhua Luo, Fan Zhang, Lu Zheng, Jiawen Wang, Shujin Sun, Mian Long
BACKGROUND: Keratinocyte (KC) migration in re-epithelization is crucial in repairing injured skin. But the mechanisms of how mechanical stimuli regulate the migration of keratinocytes have been poorly understood. METHODS: Human immortalized keratinocyte HaCaT cells were co-cultured with skin fibroblasts on PDMS membranes and transferred to the static stretch device developed in-house for additional 6 day culture under mechanical stretch to mimic surface tension in skin...
December 28, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28154255/inhibition-of-neutrophil-adhesion-and-antimicrobial-activity-by-diluted-hydrosol-prepared-from-rosa-damascena
#15
Naho Maruyama, Shigeru Tansho-Nagakawa, Chizuru Miyazaki, Kazuyuki Shimomura, Yasuo Ono, Shigeru Abe
Hydrosol prepared from the flowers of Rosa damascena (rose water) has been traditionally used for various health-related issues, including skin troubles such as erythema, itchiness, swelling. For the care of these skin troubles caused by microbial infection, both antimicrobial and antiinflammatory effects are required. Here, we investigated the effects of rose water on the growth of Candida albicans and methicillin-resistant Staphylococcus aureus (MRSA), which cause skin infections, and on the function of neutrophils, which play a major role in the regulation of inflammatory reactions...
2017: Biological & Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28151818/the-effect-of-fixation-technique-on-continuous-interscalene-nerve-block-catheter-success-a-randomized-double-blind-trial
#16
David B Auyong, David Asher Cantor, Cynthia Green, Neil A Hanson
BACKGROUND: Continuous peripheral nerve blocks offer advantages over single-injection blocks, including extended analgesia and reduction in opioid consumption. These benefits require that the perineural catheter remain intact for the duration of the planned local anesthetic infusion. Mechanical displacement of catheters, leaking, and consequent failure are known complications. The aim of this study was to evaluate continuous perineural catheter tip-to-nerve apposition in vivo over 48 hours comparing 2 different simple fixation strategies...
March 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28151479/increase-in-the-radioresistance-of-normal-skin-fibroblasts-but-not-tumor-cells-by-mechanical-injury
#17
Zelin Chen, Xin Wang, Taotao Jin, Yu Wang, Christopher S Hong, Li Tan, Tingyu Dai, Liao Wu, Zhengping Zhuang, Chunmeng Shi
The timing of radiation after mechanical injury such as in the case of surgery is considered a clinical challenge because radiation is assumed to impair wound healing. However, the physiological responses and underlying mechanisms of this healing impairment are still unclear. Here, we show that mechanical injury occurring before ionizing radiation decreases radiation-induced cell damage and increases cell repair in normal fibroblasts but not tumor cells in vitro and in vivo. At the molecular level, mechanical injury interrupts focal adhesion complexes and cell-cell cadherin interactions, transducing mechanical signals into intracellular chemical signals via activation of the phosphatidylinositol 3-kinase (PI3K), Akt, and glycogen synthase kinase 3 beta (GSK-3β) pathways...
February 2, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28144579/microvascular-response-to-transfusion-in-elective-spine-surgery
#18
J Matthias Walz, Ottokar Stundner, Federico P Girardi, Bruce A Barton, Aimee R Koll-Desrosiers, Stephen O Heard, Stavros G Memtsoudis
AIM: To investigate the microvascular (skeletal muscle tissue oxygenation; SmO2) response to transfusion in patients undergoing elective complex spine surgery. METHODS: After IRB approval and written informed consent, 20 patients aged 18 to 85 years of age undergoing > 3 level anterior and posterior spine fusion surgery were enrolled in the study. Patients were followed throughout the operative procedure, and for 12 h postoperatively. In addition to standard American Society of Anesthesiologists monitors, invasive measurements including central venous pressure, continual analysis of stroke volume (SV), cardiac output (CO), cardiac index (CI), and stroke volume variability (SVV) was performed...
January 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/28135772/evidence-for-a-role-of-eosinophils-in-blister-formation-in-bullous-pemphigoid
#19
Elisabeth de Graauw, Cassian Sitaru, Michael Horn, Luca Borradori, Shida Yousefi, Hans-Uwe Simon, Dagmar Simon
BACKGROUND: Bullous pemphigoid (BP) is an autoimmune bullous disease of the skin characterized by subepidermal blister formation due to tissue-bound and circulating autoantibodies to the hemidesmosomal antigens BP180 and BP230. Although eosinophils and their toxic mediators are found abundantly in BP lesions, their role in blister formation has remained unclear. OBJECTIVE: To investigate the role of eosinophils in the pathogenesis of BP with a specific focus on blister formation and to define conditions inducing dermal-epidermal separation (DES)...
January 30, 2017: Allergy
https://www.readbyqxmd.com/read/28134816/%C3%AE-6-integrin-%C3%AE-6-high-transferrin-receptor-cd71-low-keratinocyte-stem-cells-are-more-potent-for-generating-reconstructed-skin-epidermis-than-rapid-adherent-cells
#20
Elodie Metral, Nicolas Bechetoille, Frédéric Demarne, Walid Rachidi, Odile Damour
The epidermis basal layer is composed of two keratinocyte populations: Keratinocyte Stem cells (KSC) and Transitory Amplifying (TA) cells that arise from KSC division. Unfortunately, no specific marker exists to differ between KSC and TA cells. Here, we aimed at comparing two different methods that pretended to isolate these two populations: (i) the rapid adhesion method on coated substrate and (ii) the flow cytometry method, which is based on the difference in cell surface expressions of the α6 integrin and transferrin receptor (CD71)...
January 27, 2017: International Journal of Molecular Sciences
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