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https://www.readbyqxmd.com/read/27909303/conditional-knockout-of-n-wasp-in-mouse-fibroblast-caused-keratinocyte-hyper-proliferation-and-enhanced-wound-closure
#1
Neeraj Jain, Pazhanichamy Kalailingam, Kai Wei Tan, Hui Bing Tan, Ming Keat Sng, Jeremy Soon Kiat Chan, Nguan Soon Tan, Thirumaran Thanabalu
Neural-Wiskott Aldrich Syndrome Protein (N-WASP) is expressed ubiquitously, regulates actin polymerization and is essential during mouse development. We have previously shown that N-WASP is critical for cell-ECM adhesion in fibroblasts. To characterize the role of N-WASP in fibroblast for skin development, we generated a conditional knockout mouse model in which fibroblast N-WASP was ablated using the Cre recombinase driven by Fibroblast Specific Protein promoter (Fsp-Cre). N-WASP(FKO) (N-WASP(fl/fl); Fsp-cre) were born following Mendelian genetics, survived without any visible abnormalities for more than 1 year and were sexually reproductive, suggesting that expression of N-WASP in fibroblast is not critical for survival under laboratory conditions...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27907090/forkhead-box-c1-regulates-human-primary-keratinocyte-terminal-differentiation
#2
Lianghua Bin, Liehua Deng, Hengwen Yang, Leqing Zhu, Xiao Wang, Michael G Edwards, Brittany Richers, Donald Y M Leung
The epidermis serves as a critical protective barrier between the internal and external environment of the human body. Its remarkable barrier function is established through the keratinocyte (KC) terminal differentiation program. The transcription factors specifically regulating terminal differentiation remain largely unknown. Using a RNA-sequencing (RNA-seq) profiling approach, we found that forkhead box c 1 (FOXC1) was significantly up-regulated in human normal primary KC during the course of differentiation...
2016: PloS One
https://www.readbyqxmd.com/read/27904857/t-cadherin-expression-in-the-epidermis-and-adnexal-structures-of-normal-skin
#3
Stanislaw Buechner, Paul Erne, Therese J Resink
BACKGROUND: T-cadherin is an atypical glycosylphosphatidylinositol-anchored member of the cadherin superfamily of adhesion molecules. The role of T-cadherin in biology of the skin is poorly understood. Expression of T-cadherin in basal keratinocytes and dermal blood vessels of the healthy epidermis has been demonstrated, but studies on expression in skin appendages are rare. METHODS: We conducted an immunohistochemical analysis of T-cadherin expression in the epidermis and adnexal structures of normal skin...
September 2016: Dermatopathology (Basel, Switzerland)
https://www.readbyqxmd.com/read/27904271/histologic-evidence-of-new-collagen-formulation-using-platelet-rich-plasma-in-skin-rejuvenation-a-prospective-controlled-clinical-study
#4
Ozlem Karabudak Abuaf, Hamza Yildiz, Hüseyin Baloglu, Memet Ersan Bilgili, Hasan Aktug Simsek, Bilal Dogan
BACKGROUND: Platelet-rich plasma (PRP) is an autologous concentration of human platelets contained in a small volume of plasma and has recently been shown to accelerate rejuvenate aging skin by various growth factors and cell adhesion molecules. OBJECTIVE: This study was conducted to evaluate the efficacy and safety of intradermal injection of PRP in the human facial rejuvenation. METHODS: This study was a prospective, single-center, single-dose, open-label, non-randomized controlled clinical study...
December 2016: Annals of Dermatology
https://www.readbyqxmd.com/read/27892606/svep1-plays-a-crucial-role-in-epidermal-differentiation
#5
L Samuelov, Q Li, R Bochner, N Najor, L Albrecht, N Malchin, T Goldsmith, M Grafi-Cohen, D Vodo, G Fainberg, B Meilik, I Goldberg, E Warshauer, T Rogers, S Edie, A Ishida-Yamamoto, L Burzenski, N Erez, S A Murray, A D Irvine, L Shultz, K Green, J Uitto, E Sprecher, O Sarig
SVEP1 is a recently identified multi-domain cell adhesion protein, homologous to the mouse polydom protein, which has been shown to mediate cell-cell adhesion in an integrin dependent-manner in osteogenic cells. In the present study, we characterized SVEP1 function in the epidermis. SVEP1 was found by qRT-PCR to be ubiquitously expressed in human tissues, including the skin. Confocal microscopy revealed that SVEP1 is normally mostly expressed in the cytoplasm of basal and suprabasal epidermal cells. Down-regulation of SVEP1 expression in primary keratinocytes resulted in decreased expression of major epidermal differentiation markers...
November 28, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27886163/alghedon-fentanyl-transdermal-system-afts
#6
Patrizia Romualdi, Patrizia Santi, Sanzio Candeletti
The efficacy of transdermal fentanyl for cancer pain and chronic non-cancer pain (chronic lower back pain, rheumatoid arthritis, osteoarthritis, neuropathic pain) is well established. Several formulations of fentanyl transdermal systems have been developed to improve the drug delivery and prevent misuse of the active principle. The addition of a rate controlling membrane to the matrix system represented an important advance. The design and functional features of Alghedon patch are compared with other approved generic fentanyl transdermal systems, emphasizing the distinctiveness of Alghedon patch...
November 25, 2016: Minerva Medica
https://www.readbyqxmd.com/read/27880999/current-knowledge-on-the-active-form-of-vitamin-d-synthesized-in-the-skin-and-its-effects-on-malignant-melanoma
#7
B Bolerazska, M Rabajdova, I Spakova, M Marekova
The link between sunlight and skin cancer is a frequently discussed topic. However, ultraviolet radiation also induces the production of Vitamin D in the body. Keratinocytes and their ability to synthesize the active form of Vitamin D, which is consumed at the place of its origin in the skin, have a unique place in this discussion. We observe a remarkable sunshine-related paradox when we monitor the relationship between the dose of solar radiation and one type of skin cancer - malignant melanoma. Recent knowledge of the non-calcemic effects of Vitamin D, which include growth regulation, DNA repair, differentiation, apoptosis, membrane transport, metabolism, cell adhesion and oxidative stress, could help to further clarify this relationship...
November 24, 2016: Neoplasma
https://www.readbyqxmd.com/read/27877065/poor-adhesion-of-fentanyl-transdermal-patches-may-mimic-end-of-dosage-failure-after-48-hours-and-prompt-early-patch-replacement-in-hospitalized-cancer-pain-patients
#8
Isabelle Arnet, Sabrina Schacher, Eva Balmer, Dieter Koeberle, Kurt E Hersberger
CONTEXT: Renewal of fentanyl transdermal patch (transdermal therapeutic system [TTS]) should occur every 3 days (72 hours) according to manufacturer's guidelines. Some studies mentioned patients reporting end-of-dose failure, and thus, some authors recommend shortening the interval of application to 2 days (48 hours). However, reasons for early replacement are mostly unknown. OBJECTIVES: The objectives of this study were to assess the prevalence of early replacement of fentanyl TTS in a cancer center in Basel, Switzerland, and to assess the reasons for early replacement in stationary patients...
2016: Journal of Pain Research
https://www.readbyqxmd.com/read/27876238/thermography-examination-of-abdominal-area-skin-temperatures-in-individuals-with-and-without-focal-onset-epilepsy
#9
Hollis H King, Charles Thomas Cayce, Jeph Herrin
: Early osteopathic theory and practice, and the work of the medical intuitive Edgar Cayce suggested that the abdominal areas of individuals with epilepsy would manifest "cold spots." The etiology for this phenomenon was thought to be abdominal adhesions caused by inflammation and viscero-somatic reflexes caused by adhesions or injury to visceral or musculoskeletal system structures. Indeed, until that advent of electroencephalography in the 1930s, medical practice regarding epilepsy focused on abdominal neural and visceral structures...
October 21, 2016: Explore: the Journal of Science and Healing
https://www.readbyqxmd.com/read/27875060/open-versus-thoracoscopic-rfa-assisted-lung-resection
#10
Anna Poupalou, Michael Kontos, Evangelos Felekouras, Apostolos Papalois, Nikolaos Kavantzas, George Agrogiannis, Fatima Yagoubi, Periklis Tomos
The purpose of this study was to evaluate Radio Frequency Ablation (RFA)-assisted lung parenchymal transection through thoracotomy and thoracoscopy. Twelve domestic pigs underwent RFA-assisted lingulectomy: six through thoracotomy (group A), and six with thoracoscopy (group B). There was no mortality, no bleeding, or air leak intra- or postoperatively in either of the groups, and no conversion to open thoracotomy in group B. Group A had longer operating period and more pleural adhesions. A barotrauma, a skin burn, and a localized infection were observed in this group...
November 22, 2016: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/27868279/involvement-of-dpp-iv-cd26-in-cutaneous-wound-healing-process-in-mice
#11
Lara Baticic Pucar, Ester Pernjak Pugel, Dijana Detel, Jadranka Varljen
Dipeptidyl peptidase IV (DPP IV/CD26) is a widely distributed multifunctional protein that plays a significant role in different physiological as well as pathological processes having a broad spectrum of bioactive substrates and immunomodulative properties. It has potential influence on different processes crucial for wound healing, including cell adhesion, migration, apoptosis and extracellular matrix degradation. However, despite its known enzymatic and immunomodulative functions, limited data characterize the role of DPP IV/CD26 in cutaneous wound healing mechanisms...
November 21, 2016: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/27862685/topical-application-of-probiotics-in-skin-adhesion-antimicrobial-and-antibiofilm-in-vitro-assays
#12
Elísia G Lopes, Diana A Moreira, Patricia Gullón, Beatriz Gullón, Alejandra Cardelle-Cobas, Freni K Tavaria
AIMS: When skin dysbiosis occurs as a result of skin disorders, probiotics can act as modulators, restoring microbial balance. Several properties of selected probiotics were evaluated so that their topical application could be considered. METHODS AND RESULTS: Adhesion, antimicrobial, quorum sensing and antibiofilm assays were carried out with several probiotic strains and tested against selected skin pathogens. All tested strains displayed significant adhesion to keratin...
November 12, 2016: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/27853878/tight-junctions-in-skin-inflammation
#13
REVIEW
Katja Bäsler, Johanna M Brandner
Inflammation of the skin is found after various external stimuli, e.g., UV radiation, allergen uptake, microbial challenge, or contact with irritants, as well as due to intrinsic, not always well-defined, stimuli, e.g., in autoimmune responses. Often, it is also triggered by a combination of both. The specific processes, which mean the kind of cytokines and immune cells involved and the extent of the reaction, depend not only on the trigger but also on the predisposition of the individual. Tight junctions (TJs) in the skin have been shown to form a barrier in the granular cell layer of the epidermis...
November 16, 2016: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/27843434/peters-anomaly-in-twins-a-case-report-of-a-rare-incident-with-novel-comorbidities
#14
Hashem S Almarzouki, Alaa A Tayyib, Hassan A Khayat, Raed E Alsulami, Saeed M Alzahrani, Abdulaziz S Alkahtani, Loai S Alghifees
INTRODUCTION: Peters anomaly is a rare developmental malformation involving the anterior segment of the eye, which culminates in amblyopia or congenital blindness. Multiple ocular and/or systemic malformations have been observed with this anomaly, and novel comorbidities continue to be reported. CASE PRESENTATION: The probands were monozygotic twin boys (twin I and twin II) born to consanguineous parents at 36 weeks of gestation. Coarse facial features and deep-seated eyes were noted at birth...
September 2016: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/27836404/randomized-controlled-trial-of-octyl-cyanoacrylate-skin-adhesive-versus-subcuticular-suture-for-skin-closure-after-implantable-venous-port-placement
#15
Jonathan G Martin, Scott T Hollenbeck, Gemini Janas, Ryan A Makar, Waleska M Pabon-Ramos, Paul V Suhocki, Michael J Miller, David R Sopko, Tony P Smith, Charles Y Kim
PURPOSE: To compare early outcomes of skin closure with octyl cyanoacrylate skin adhesive versus subcuticular suture closure. MATERIALS AND METHODS: Over a 7-month period, 109 subjects (28 men and 81 women; mean age, 58.6 y) scheduled to undergo single-lumen implantable venous port insertion for chemotherapy were randomly assigned to skin closure with either octyl cyanoacrylate skin adhesive or absorbable subcuticular suture after suturing the deep dermal layer...
November 8, 2016: Journal of Vascular and Interventional Radiology: JVIR
https://www.readbyqxmd.com/read/27831556/epidermal-specific-deletion-of-cd44-reveals-a-function-in-keratinocytes-in-response-to-mechanical-stress
#16
M Shatirishvili, A S Burk, C M Franz, G Pace, T Kastilan, K Breuhahn, E Hinterseer, A Dierich, L Bakiri, E F Wagner, H Ponta, T N Hartmann, M Tanaka, V Orian-Rousseau
CD44, a large family of transmembrane glycoproteins, plays decisive roles in physiological and pathological conditions. CD44 isoforms are involved in several signaling pathways essential for life such as growth factor-induced signaling by EGF, HGF or VEGF. CD44 is also the main hyaluronan (HA) receptor and as such is involved in HA-dependent processes. To allow a genetic dissection of CD44 functions in homeostasis and disease, we generated a Cd44 floxed allele allowing tissue- and time-specific inactivation of all CD44 isoforms in vivo...
November 10, 2016: Cell Death & Disease
https://www.readbyqxmd.com/read/27826004/cell-infiltrative-hydrogel-fibrous-scaffolds-for-accelerated-wound-healing
#17
Xin Zhao, Xiaoming Sun, Lara Yildirimer, Qi Lang, Zhi Yuan William Lin, Reila Zheng, Yuguang Zhang, Wenguo Cui, Nasim Annabi, Ali Khademhosseini
: Development of natural protein-based fibrous scaffolds with tunable physical properties and biocompatibility is highly desirable to construct a three-dimensional (3D), fully cellularized scaffold for wound healing. Herein, we demonstrated a simple and effective technique to construct electrospun 3D fibrous scaffolds for accelerated wound healing using a photocrosslinkable hydrogel based on methacryloylated gelatin (GelMA). We found that the physical properties of the photocrosslinkable hydrogel including water retention, stiffness, strength, elasticity and degradation can be tailored by changing the light exposure time...
November 4, 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27803921/use-of-adipose-derived-stem-cells-to-support-topical-skin-adhesive-for-wound-closure-a-preliminary-report-from-animal-in-vivo-study
#18
Maciej Nowacki, Katarzyna Pietkun, Arkadiusz Jundziłł, Tomasz Kloskowski, Dariusz Grzanka, Joanna Skopinska-Wisniewska, Kinga Scibior, Maciej Gagat, Marta Pokrywczyńska, Alina Grzanka, Wojciech Zegarski, Rafał Czajkowski, Tomasz Drewa, Barbara Zegarska
The aim of this study was to determine the local and systemic effects of adipose-derived stem cells (ADSCs) as a component of topical skin adhesive in an animal artificial wound closure model. In presented study the cosmetic effects, histological analysis, mechanical properties, and cell migration have been assessed to evaluate the usefulness of ADSCs as supporting factor for octyl blend cyanoacrylate adhesive. The total of 40 rats were used and divided into six groups. In the Study Group, ADSCs were administered by multipoint injection of the six surrounding intrawound areas with additional freely leaving procedure of the cells between the skin flaps just before applying adhesive to close the wound...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27793824/salmonella-serovar-kentucky-flagella-is-required-for-broiler-skin-adhesion-and-caco-2-cell-invasion
#19
Sanaz Salehi, Kevin Howe, Mark L Lawrence, John P Brooks, R Hartford Bailey, Attila Karsi
: Non-typhoidal Salmonella are the main source of pathogenic bacterial contamination in the poultry industry. Recently, Salmonella enterica serovar Kentucky has been recognized as the most prominent serovar on carcasses in poultry processing plants. Previous studies showed that flagella are one of the main factors that contribute to bacterial attachment to broiler skin. However, the precise role of flagella and mechanism of attachment are unknown. There are two different flagella subunits (fliC and fljB) expressed alternatively in Salmonella enterica serovars using phase variation...
October 28, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27785509/stretchable-adhesive-and-ultra-conformable-elastomer-thin-films
#20
Nobutaka Sato, Atsushi Murata, Toshinori Fujie, Shinji Takeoka
Thermoplastic elastomers are attractive materials because of the drastic changes in their physical properties above and below the glass transition temperature (Tg). In this paper, we report that free-standing polystyrene (PS, Tg: 100 °C) and polystyrene-polybutadiene-polystyrene triblock copolymer (SBS, Tg: -70 °C) thin films with a thickness of hundreds of nanometers were prepared by a gravure coating method. Among the mechanical properties of these thin films determined by bulge testing and tensile testing, the SBS thin films exhibited a much lower elastic modulus (ca...
November 16, 2016: Soft Matter
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