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https://www.readbyqxmd.com/read/28098721/the-endocannabinoid-system-and-its-role-in-eczematous-dermatoses
#1
Alexandra R Trusler, Ashley K Clark, Raja K Sivamani, Vivian Y Shi
The skin serves as the foremost barrier between the internal body and the external world, providing crucial protection against pathogens and chemical, mechanical, and ultraviolet damages. The skin is a central player in the intricate network of immune, neurologic, and endocrine systems. The endocannabinoid system (ECS) includes an extensive network of bioactive lipid mediators and their receptors, functions to modulate appetite, pain, mood, and memory, and has recently been implicated in skin homeostasis. Disruption of ECS homeostasis is implicated in the pathogenesis of several prevalent skin conditions...
January 2017: Dermatitis
https://www.readbyqxmd.com/read/28096239/skin-to-skin-care-in-preterm-infants-receiving-respiratory-support-does-not-lead-to-physiological-instability
#2
Laila Lorenz, Jennifer A Dawson, Hannah Jones, Susan E Jacobs, Jeanie L Cheong, Susan M Donath, Peter G Davis, C Omar F Kamlin
OBJECTIVE: Providing skin-to-skin care (SSC) to preterm infants is standard practice in many neonatal intensive care units. There are conflicting reports on the stability of oxygen saturation (SpO2) during SSC, which may create a barrier to a wider implementation of SSC to infants receiving respiratory support. Regional cerebral oxygenation (rcO2) measured using near-infrared spectroscopy can serve as a surrogate parameter for cerebral oxygen delivery and consumption. We hypothesised that rcO2 during SSC would be similar to standard care in preterm infants receiving respiratory support...
January 17, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28095579/development-and-clinical-assessment-of-a-comprehensive-product-for-pigmentation-control-in-multiple-ethnic-populations
#3
Elizabeth T Makino, Kuniko Kadoya, Monya L Sigler, Peter D Hino, Rahul C Mehta
BACKGROUND: Pigmentary changes in people of different ethnic origins are controlled by slight variations in key biological pathways leading to different outcomes from the same treatment. It is important to develop and test products for desired outcomes in varying ethnic populations. OBJECTIVES: To develop a comprehensive product (LYT2) that affects all major biological pathways controlling pigmentation and test for clinical efficacy and safety in different ethnic populations...
December 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095574/managing-occupational-irritant-contact-dermatitis-using-a-two-step-skincare-regimen-designed-to-prevent-skin-damage-and-support-skin-recovery
#4
Erika C von Grote, Kiruthi Palaniswarmy, Matthew H Meckfessel
Occupational irritant contact dermatitis (ICD) affecting the hands is a common and difficult-to-manage condition. Occupations that necessitate contact with harsh chemicals, use of alcohol-based disinfectants, and frequent hand washing elevate the risk of ICD. Management strategies that do not adequately prevent accumulated damage and repair skin, can develop into chronic dermatoses which negatively impact work productivity and quality of life. A 2-step skin-care regimen (Excipial Daily Protection Hand Cream (EP) and Excipial Rapid Repair Hand Cream (ER), Galderma Laboratories, L...
December 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095570/efficacy-of-a-skin-condition-adapted-solution-for-xerosis-and-itch-relief-associated-with-aging
#5
Ramsin Joseph Yadgar, Adam J Friedman
In recent decades, the stratum corneum (SC), has been recognized for its multifunctional role in maintaining the homeostasis of the human epidermal barrier. A better understanding of the SC's ability to act as its own biosensor in detecting dysfunction and integrating restorative actions can help identify the origin of certain skin conditions. A more holistic understanding of the morphological changes of the SC during the natural aging process and how it deviates in disease states can help bring about new treatment strategies...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095569/efficacy-of-a-hand-regimen-in-skin-barrier-protection-in-individuals-with-occupational-irritant-contact-dermatitis
#6
Laura Jordan
BACKGROUND: Occupational irritant contact dermatitis (OICD) is a dif cult and hard to manage condition. It occurs more frequently in certain occupations where contact with harsh chemicals, use of alcohol-based disinfectants, and frequent hand washing heightens the risk. Treatment for OICD includes patient education in addition to physical, topical, and systemic therapies. OBJECTIVE: To review the pathogenesis and treatment options for OICD and evaluate the ef cacy of a selective skin-care regimen involv- ing a hand protectant cream alone as well as combined with a repair cream and speci c cleanser...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095568/efficacy-of-a-moisturizing-foam-in-skin-barrier-regeneration-and-itch-relief-in-subjects-prone-to-atopic-dermatitis
#7
Peter A Lio
INTRODUCTION: Atopic dermatitis (AD) is characterized by impaired epidermal barrier with increased transepidermal water loss (TEWL). Scratching further compromises skin integrity, contributing to a cycle of inflammation. The objective of the present study was to investigate a topical anti-itch foam in improving skin barrier and itch. MATERIAL AND METHODS: A single center open study was performed on 26 adults previously diagnosed with AD but without active lesions...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095545/real-time-high-resolution-in-vivo-characterization-of-superficial-skin-with-microscopy-using-ultraviolet-surface-excitation-muse
#8
Derek Ho, Farzad Fereidouni, Richard M Levenson, Jared Jagdeo
BACKGROUND: Skin care products make up the largest part (36%) of the cosmetic market globally, of which the United States plays the largest role. In 2015, approximately 115 billion USD was spent globally on skin care products. Skin care products, in contradistinction to pharmaceuticals, are not strictly regulated by the FDA. A key factor for evaluation of a skin care product or topical drug is skin barrier function and effect on super cial skin. Thus, it is critical to have quantitative and qualitative methods to study the effects of skin care products on skin barrier and the super cial skin...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095538/exogenous-factors-in-skin-barrier-repair
#9
Julia Schwartz, Adam J Friedman
The stratum corneum (SC) is the skin's outermost layer and serves the primary function of acting as a shield to keep foreign matter out and to essential elements, such as moisture and water, in. Maintenance of this skin barrier is crucial to healthy functioning skin. A damaged or diseased skin barrier is vulnerable to infection, irritants, and allergens. The cornerstone of skin barrier regulation and repair is through the use of moisturizers. While healthcare providers and patients may underestimate the importance of moisturizers due to their lack of active ingredients, the benefit of a well-planned moisturizer regimen for skin barrier regulation should not be discounted...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095528/the-role-of-cutaneous-microbiota-harmony-in-maintaining-a-functional-skin-barrier
#10
Hilary E Baldwin, Neal D Bhatia, Adam Friedman, Richard Martin Eng, Sophie Seite
The skin is constantly exposed to various endogenous and exogenous factors that may impact its barrier function at the physical, mechanical, immunological, and microbial levels. These factors have the potential to initiate or exacerbate a variety of inflammatory skin conditions, especially those associated with barrier dysfunction. The barrier function of the skin depends upon a symbiotic relationship between resident microbial communities and host tissue. This symbiosis results from complex signals involved in both the innate and adaptive immune responses...
January 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095415/klk5-and-klk7-ablation-fully-rescues-lethality-of-netherton-syndrome-like-phenotype
#11
Petr Kasparek, Zuzana Ileninova, Olga Zbodakova, Ivan Kanchev, Oldrich Benada, Karel Chalupsky, Maria Brattsand, Inken M Beck, Radislav Sedlacek
Netherton syndrome (NS) is a severe skin disease caused by the loss of protease inhibitor LEKTI, which leads to the dysregulation of epidermal proteases and severe skin-barrier defects. KLK5 was proposed as a major protease in NS pathology, however its inactivation is not sufficient to rescue the lethal phenotype of LEKTI-deficient mice. In this study, we further elucidated the in vivo roles of the epidermal proteases in NS using a set of mouse models individually or simultaneously deficient for KLK5 and KLK7 on the genetic background of a novel NS-mouse model...
January 17, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28093717/16-novel-mutations-in-pnpla1-in-patients-with-autosomal-recessive-congenital-ichthyosis-reveal-the-importance-of-an-extended-patatin-domain-in-pnpla1-that-is-essential-for-proper-human-skin-barrier-function
#12
A D Zimmer, G J Kim, A Hotz, E Bourrat, I Hausser, C Has, V Oji, K Stieler, A Vahlquist, V Kunde, B Weber, F P W Radner, S Leclerc-Mercier, N Schlipf, P Demmer, J Küsel, J Fischer
BACKGROUND: Autosomal recessive congenital ichthyosis (ARCI) is a genetically heterogeneous group of rare Mendelian skin disorders characterized by cornification and differentiation defects of keratinocytes. Mutations in nine genes including PNPLA1 are known to cause non-syndromic forms of ARCI. To date, only ten distinct pathogenic mutations in PNPLA1 have been reported. OBJECTIVES: To identify new causative PNPLA1 mutations, we screened genetically unresolved cases including our ARCI collection comprising more than 700 families...
January 17, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28093208/selective-reporting-of-antibiotic-susceptibility-test-results-in-european-countries-an-escmid-cross-sectional-survey
#13
Céline Pulcini, Gianpiero Tebano, Nico T Mutters, Evelina Tacconelli, Emmanuelle Cambau, Gunnar Kahlmeter, Vincent Jarlier
Selective reporting of antibiotic susceptibility test (AST) results is one possible laboratory-based antibiotic stewardship intervention. The primary aim of this study was to identify where and how selective reporting of AST results is implemented in Europe both in inpatient and in outpatient settings. An ESCMID cross-sectional, self-administered, internet-based survey was conducted among all EUCIC (European Committee on Infection Control) or EUCAST (European Committee on Antimicrobial Susceptibility Testing) national representatives in Europe and Israel...
January 10, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28088574/time-dependence-of-the-enhancement-effect-of-chemical-enhancers-molecular-mechanisms-of-enhancing-kinetics
#14
Xiaochang Liu, Peng Quan, Shanshan Li, Chao Liu, Yuan Zhao, Yongshan Zhao, Liang Fang
Chemical enhancers are widely used for facilitating drug penetration in transdermal drug delivery system (TDDS). However, there is a lack of knowledge about how the enhancement effect changes over time. In this study, on the basis of kinetic parameters of enhancement effect, molecular details of the dynamic enhancement process was described and a new hypothesis of the recovery mechanism of the skin barrier function was proposed. Using pretreated skin and flurbiprofen patch, the effects of Azone (AZ) and menthol decanoate (MT-10) were evaluated with in vitro permeation experiment and further confirmed by confocal laser scanning microscopy (CLSM) and TEWL...
January 11, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28087239/on-going-mechanical-damage-from-mastication-drives-homeostatic-th17-cell-responses-at-the-oral-barrier
#15
Nicolas Dutzan, Loreto Abusleme, Hayley Bridgeman, Teresa Greenwell-Wild, Tamsin Zangerle-Murray, Mark E Fife, Nicolas Bouladoux, Holly Linley, Laurie Brenchley, Kelly Wemyss, Gloria Calderon, Bo-Young Hong, Timothy J Break, Dawn M E Bowdish, Michail S Lionakis, Simon A Jones, Giorgio Trinchieri, Patricia I Diaz, Yasmine Belkaid, Joanne E Konkel, Niki M Moutsopoulos
Immuno-surveillance networks operating at barrier sites are tuned by local tissue cues to ensure effective immunity. Site-specific commensal bacteria provide key signals ensuring host defense in the skin and gut. However, how the oral microbiome and tissue-specific signals balance immunity and regulation at the gingiva, a key oral barrier, remains minimally explored. In contrast to the skin and gut, we demonstrate that gingiva-resident T helper 17 (Th17) cells developed via a commensal colonization-independent mechanism...
January 6, 2017: Immunity
https://www.readbyqxmd.com/read/28086749/evolution-of-the-angiopoietin-like-gene-family-in-teleosts-and-their-role-in-skin-regeneration
#16
Rita A Costa, João C R Cardoso, Deborah M Power
BACKGROUND: The skin in vertebrates is a protective barrier and damage is rapidly repaired to re-establish barrier function and maintain internal homeostasis. The angiopoietin-like (ANGPTL) proteins are a family of eight secreted glycoproteins with an important role in skin repair and angiogenesis in humans. In other vertebrates their existence and role in skin remains largely unstudied. The present study characterizes for the first time the homologues of human ANGPTLs in fish and identifies the candidates that share a conserved role in skin repair using a regenerating teleost skin model over a 4-day healing period...
January 13, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28081250/cutaneous-deficiency-of-filaggrin-and-stat3-exacerbates-vaccinia-disease-in-vivo
#17
Yong He, Ishrat Sultana, Kazuyo Takeda, Jennifer L Reed
RATIONALE: Defects in filaggrin and STAT3 are associated with atopic dermatitis (AD) and susceptibility to severe skin infection. METHODS: We evaluated skin infection with the current smallpox vaccine, ACAM-2000, in immunosuppressed mice with combined cutaneous deficiency in filaggrin and STAT3. In parallel, early events post-infection with ACAM-2000 were investigated in cultured keratinocytes in which filaggrin expression was knocked down via siRNA. RESULTS: Immunosuppressed, filaggrin-deficient mice, treated with the topical STAT3 inhibitor Stattic® prior to ACAM-2000 infection, demonstrated rapid weight loss, prolonged vaccinia burden in skin, and dermatitis...
2017: PloS One
https://www.readbyqxmd.com/read/28081218/adiponectin-signaling-regulates-lipid-production-in-human-sebocytes
#18
Yu Ra Jung, Jin-Hyup Lee, Kyung-Cheol Sohn, Young Lee, Young-Joon Seo, Chang-Deok Kim, Jeung-Hoon Lee, Seung-Phil Hong, Seong-Jun Seo, Seong-Jin Kim, Myung Im
Adiponectin plays important roles in metabolic function, inflammation and multiple biological activities in various tissues. However, evidence for adiponectin signaling in sebaceous glands is lacking, and its role remains to be clarified. This study investigated the role of adiponectin in lipid production in sebaceous glands in an experimental study of human sebocytes. We demonstrated that human sebaceous glands in vivo and sebocytes in vitro express adiponectin receptor and that adiponectin increased cell proliferation...
2017: PloS One
https://www.readbyqxmd.com/read/28078772/skin-cleansing-and-emolliating-for-older-people-a-quasi-experimental-pilot-study
#19
Jill Brooks, Fiona Cowdell, Steven J Ersser, Eric D Gardiner
AIMS: The aims of this study were to (i) assess the effect of low-cost hygiene and emollient regimens on the skin barrier function (SBF) of people aged >65 year with xerosis (dry skin) on their lower legs; (ii) to assess the utility of portable measures of skin barrier function in terms of stratum corneum hydration (SCH) and transepidermal water loss (TEWL) in community settings; and iii) to provide evidence for a randomised controlled trial on the treatment of adults in a resource-poor country with dry skin on their lower legs which causes and exacerbates the skin disease podoconiosis (non-filarial elephantiasis)...
January 12, 2017: International Journal of Older People Nursing
https://www.readbyqxmd.com/read/28073620/electrochemical-monitoring-of-native-catalase-activity-in-skin-using-skin-covered-oxygen-electrode
#20
Sarah Nocchi, Sebastian Björklund, Birgitta Svensson, Johan Engblom, Tautgirdas Ruzgas
A skin covered oxygen electrode, SCOE, was constructed with the aim to study the enzyme catalase, which is part of the biological antioxidative system present in skin. The electrode was exposed to different concentrations of H2O2 and the amperometric current response was recorded. The observed current is due to H2O2 penetration through the outermost skin barrier (referred to as the stratum corneum, SC) and subsequent catalytic generation of O2 by catalase present in the underlying viable epidermis and dermis...
January 3, 2017: Biosensors & Bioelectronics
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