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Inflammatory skin damage

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https://www.readbyqxmd.com/read/27914451/effects-of-fibroin-microcarriers-on-inflammation-and-regeneration-of-deep-skin-wounds-in-mice
#1
A Y Arkhipova, M A Nosenko, N V Malyuchenko, R V Zvartsev, A M Moisenovich, A S Zhdanova, T V Vasil'eva, E A Gorshkova, I I Agapov, M S Drutskaya, S A Nedospasov, M M Moisenovich
The process of tissue regeneration following damage takes place with direct participation of the immune system. The use of biomaterials as scaffolds to facilitate healing of skin wounds is a new and interesting area of regenerative medicine and biomedical research. In many ways, the regenerative potential of biological material is related to its ability to modulate the inflammatory response. At the same time, all foreign materials, once implanted into a living tissue, to varying degree cause an immune reaction...
November 2016: Biochemistry. Biokhimii︠a︡
https://www.readbyqxmd.com/read/27905098/are-neutrophilic-dermatoses-autoinflammatory-disorders
#2
REVIEW
T K Satoh, M Mellett, E Contassot, L E French
Neutrophils constitute essential players in inflammatory responses and are the first line of defence against harmful stimuli. However, dysregulation of neutrophil homeostasis can result in excessive inflammation and subsequent tissue damage. Neutrophilic dermatoses are a spectrum of inflammatory disorders characterized by skin lesions resulting from a neutrophil-rich inflammatory infiltrate in the absence of infection. The exact molecular pathophysiology of neutrophilic dermatoses has long been poorly understood...
November 30, 2016: British Journal of Dermatology
https://www.readbyqxmd.com/read/27900049/toll-like-receptors-and-cutaneous-melanoma
#3
Ilaria Coati, Serena Miotto, Irene Zanetti, Mauro Alaibac
Innate immune cells recognize highly conserved pathogen-associated molecular patterns (PAMPs) via pattern recognition receptors (PRRs). Previous studies have demonstrated that PRRs also recognize endogenous molecules, termed damage-associated molecular patterns (DAMPs) that are derived from damaged cells. PRRs include Toll-like receptors (TLRs), scavenger receptors, C-type lectin receptors and nucleotide oligomerization domain-like receptors. To date, 10 TLRs have been identified in humans and each receptor responds to a different ligand...
November 2016: Oncology Letters
https://www.readbyqxmd.com/read/27886127/viperid-envenomation-wound-exudate-contributes-to-increased-vascular-permeability-via-a-damps-tlr-4-mediated-pathway
#4
Alexandra Rucavado, Carolina A Nicolau, Teresa Escalante, Junho Kim, Cristina Herrera, José María Gutiérrez, Jay W Fox
Viperid snakebite envenomation is characterized by inflammatory events including increase in vascular permeability. A copious exudate is generated in tissue injected with venom, whose proteomics analysis has provided insights into the mechanisms of venom-induced tissue damage. Hereby it is reported that wound exudate itself has the ability to induce increase in vascular permeability in the skin of mice. Proteomics analysis of exudate revealed the presence of cytokines and chemokines, together with abundant damage associated molecular pattern molecules (DAMPs) resulting from both proteolysis of extracellular matrix and cellular lysis...
November 24, 2016: Toxins
https://www.readbyqxmd.com/read/27885783/protective-effects-of-a-novel-nutritional-and-phytonutrient-blend-on-ultraviolet-radiation-induced-skin-damage-and-inflammatory-response-through-aging-defense-mechanisms
#5
Steven M Wood, Angela F Mastaloudis, Shelly N Hester, Russell Gray, Dale Kern, Jin Namkoong, Zoe D Draelos
BACKGROUND: The human body relies on several aging defense mechanisms (ADMs) to limit damage induced from pro-aging stressors (aging aggressors). However, such protective mechanisms can be compromised, leading to accelerated aging. The skin provides a model to probe the effects of an oral nutritional intervention on ADMs in response to ultraviolet radiation (UVR)-induced damage. OBJECTIVE: To determine whether supplementation with a novel nutritional and phytonutrient blend could protect against UVR-induced skin damage and positively influence facial skin attributes and characteristics by bolstering ADMs...
November 24, 2016: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/27863141/uvb-irradiation-causes-sting-dependent-production-of-protective-type-1-interferon-in-the-skin-by-recruited-inflammatory-monocytes
#6
Clayton Sontheimer, Denny Liggitt, Keith B Elkon
Objective Photosensitivity is common in patients with systemic lupus, though the mechanisms linking ultraviolet light to flares is not well understood. Here, we asked whether repetitive UVB exposure could induce Type I interferon (IFN-I) in normal mouse skin, and investigated the roles of inflammatory monocytes and plasmacytoid dendritic cells (PDCs) in IFN-I production and development of UVB-induced inflammation. Methods Mice were irradiated with UVB at 100 mJ/cm(2) for five days and cutaneous manifestations examined by mRNA expression of inflammatory and IFN-I response genes, histology, and flow cytometry...
November 11, 2016: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/27847530/aqueous-extract-of-clerodendranthus-spicatus-exerts-protective-effect-on-uv-induced-photoaged-mice-skin
#7
Lan Wang, Xie Zhang, Yong-Xian Li, Lie-Qiang Xu, Cai-Lan Li, Zhen-Biao Zhang, Jia-Li Liang, Zi-Ren Su, Hui-Fang Zeng, Yu-Cui Li
Clerodendranthus spicatus (Thunb.) C.Y.Wu (CS) is commonly used to treat kidney diseases in traditional Chinese medicine for its prominent anti-inflammatory effect and nourishing function to kidneys. In this study, aqueous extract of CS was assessed for its protective effect on UV-induced skin damage of mice. The chemical compositions of CS aqueous extract were determined by HPLC-ESI-MS/MS, in which 10 components were identified. During the experimental period, CS (0.9, 1.8, and 3.6 g/mL) was externally applied to shaved dorsal skins of mice prior to UV irradiation, daily for ten weeks...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/27830291/-cutaneous-involvement-in-chronic-inflammatory-bowel-disease-crohn-s-disease-and-ulcerative-colitis
#8
REVIEW
L Richter, K Rappersberger
BACKGROUND: Over recent decades, both the incidence and prevalence of chronic inflammatory bowel disease have continued to rise in industrialized countries; the disease is frequently associated with extracutaneous involvement and comorbidity. OBJECTIVES: The purpose of this work was to investigate the frequency and specificity of mucocutaneous manifestations in Crohn's disease (CD) and ulcerative colitis (UC). MATERIALS AND METHODS: An extensive search in peer-reviewed journals via PubMed was performed; presented is a summary and analysis of various studies and data, including data of patients treated at our department...
December 2016: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/27829707/effect-of-topical-administration-of-fractions-and-isolated-molecules-from-plant-extracts-on-skin-wound-healing-a-systematic-review-of-murine-experimental-models
#9
REVIEW
Mariáurea Matias Sarandy, Fernanda Barbosa Lopes, Sérgio Luis Pinto da Matta, Marcus Vinicius Mello Pinto, Sirlene Souza Rodrigues Sartori, Rômulo Dias Novaes, Reggiani Vilela Golçalves
Background and Purpose. Skin wound healing is a dynamic process driven by molecular events responsible for the morphofunctional repair of the injured tissue. In a systematic review, we analyzed the relevance of plant fractions and isolates on skin wound healing. By revising preclinical investigations with murine models, we investigated if the current evidence could support clinical trials. Methods. Studies were selected in the MEDLINE/PubMed and Scopus databases according to the PRISMA statement. All 32 identified studies were submitted to data extraction and the methodological bias was investigated according to ARRIVE strategy...
2016: Mediators of Inflammation
https://www.readbyqxmd.com/read/27828771/how-does-chronic-cigarette-smoke-exposure-affect-human-skin-a-global-proteomics-study-in-primary-human-keratinocytes
#10
Pavithra Rajagopalan, Vishalakshi Nanjappa, Remya Raja, Ankit P Jain, Kiran K Mangalaparthi, Gajanan J Sathe, Niraj Babu, Krishna Patel, Nükhet Cavusoglu, Jeremie Soeur, Akhilesh Pandey, Nita Roy, Lionel Breton, Aditi Chatterjee, Namita Misra, Harsha Gowda
Cigarette smoking has been associated with multiple negative effects on human skin. Long-term physiological effects of cigarette smoke are through chronic and not acute exposure. Molecular alterations due to chronic exposure to cigarette smoke remain unclear. Primary human skin keratinocytes chronically exposed to cigarette smoke condensate (CSC) showed a decreased wound-healing capacity with an increased expression of NRF2 and MMP9. Using quantitative proteomics, we identified 4728 proteins, of which 105 proteins were overexpressed (≥2-fold) and 41 proteins were downregulated (≤2-fold) in primary skin keratinocytes chronically exposed to CSC...
November 2016: Omics: a Journal of Integrative Biology
https://www.readbyqxmd.com/read/27818661/the-role-of-purine-metabolites-as-damps-in-acute-graft-versus-host-disease
#11
REVIEW
Petya Apostolova, Robert Zeiser
Acute graft-versus-host disease (GvHD) causes high mortality in patients undergoing allogeneic hematopoietic cell transplantation. An early event in the classical pathogenesis of acute GvHD is tissue damage caused by the conditioning treatment or infection that consecutively leads to translocation of bacterial products [pathogen-associated molecular patterns (PAMPs)] into blood or lymphoid tissue, as well as danger-associated molecular patterns (DAMPs), mostly intracellular components that act as pro-inflammatory agents, once they are released into the extracellular space...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27818081/enhanced-sensitivity-of-neil1-mice-to-chronic-uvb-exposure
#12
Marcus J Calkins, Vladimir Vartanian, Nichole Owen, Guldal Kirkali, Pawel Jaruga, Miral Dizdaroglu, Amanda K McCullough, R Stephen Lloyd
Oxidative stress and reactive oxygen species (ROS)-induced DNA base damage are thought to be central mediators of UV-induced carcinogenesis and skin aging. However, increased steady-state levels of ROS-induced DNA base damage have not been reported after chronic UV exposure. Accumulation of ROS-induced DNA base damage is governed by rates of lesion formation and repair. Repair is generally performed by Base Excision Repair (BER), which is initiated by DNA glycosylases, such as 8-oxoguanine glycosylase and Nei-Endonuclease VIII-Like 1 (NEIL1)...
October 28, 2016: DNA Repair
https://www.readbyqxmd.com/read/27816646/hesperidin-ameliorates-uv-radiation-induced-skin-damage-by-abrogation-of-oxidative-stress-and-inflammatory-in-hacat-cells
#13
Min Li, Xiang-Fei Lin, Jie Lu, Bing-Rong Zhou, Dan Luo
Ultraviolet A (UVA) radiation contributes to skin photoaging. Hesperidin which is a flavanone glycoside found in citrus fruit peels, have been intensively studied for their UVA-protective activity, but its effects and mechanisms on UVA irradiation-induced inflammation and oxidative stress have never been described. Thus, the purpose of this study was to evaluate the effects of hesperidin in skin oxidative stress and inflammation induced by UVA irradiation. In this study, we firstly examined whether hesperidin may exert direct protective effects on the UVA-induced in human keratinocytes (HaCaT) cell injury in vitro...
November 1, 2016: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/27816361/genetic-variants-in-cd44-and-mat1a-confer-susceptibility-to-acute-skin-reaction-in-breast-cancer-patients-undergoing-radiation-therapy
#14
Kamalesh Dattaram Mumbrekar, Satish Rao Bola Sadashiva, Shama Prasada Kabekkodu, Donald Jerard Fernandes, Bejadi Manjunath Vadhiraja, Tomo Suga, Yoshimi Shoji, Fumiaki Nakayama, Takashi Imai, Kapaettu Satyamoorthy
PURPOSE: Heterogeneity in radiation therapy (RT)-induced normal tissue toxicity is observed in 10% of cancer patients, limiting the therapeutic outcomes. In addition to treatment-related factors, normal tissue adverse reactions also manifest from genetic alterations in distinct pathways majorly involving DNA damage-repair genes, inflammatory cytokine genes, cell cycle regulation, and antioxidant response. Therefore, the common sequence variants in these radioresponsive genes might modify the severity of normal tissue toxicity, and the identification of the same could have clinical relevance as a predictive biomarker...
September 20, 2016: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/27811481/dose-and-time-dependent-cellular-effects-of-cold-atmospheric-pressure-plasma-evaluated-in-3d-skin-models
#15
Cornelia Wiegand, Sarah Fink, Oliver Beier, Kerstin Horn, Andreas Pfuch, Arnd Schimanski, Bernd Grünler, Uta-Christina Hipler, Peter Elsner
BACKGROUND: Application of cold atmospheric pressure plasmas (CAPs) in or on the human body was termed 'plasma medicine'. So far, plasmas were utilized for sterilization of implants, other heat-sensitive products, or employed for chemical surface modifications. By now, CAPs are further used effectively for wound treatment. The present study analyses the effect of a plasma jet with air or nitrogen as process gas, previously evaluated for antimicrobial efficacy, on human cells using a 3D skin model...
November 4, 2016: Skin Pharmacology and Physiology
https://www.readbyqxmd.com/read/27798104/uv-b-induced-cutaneous-inflammation-and-prospects-for-antioxidant-treatment-in-kindler-syndrome
#16
Kristin Maier, Yinghong He, Ute Wölfle, Philipp R Esser, Tilman Brummer, Christoph Schempp, Leena Bruckner-Tuderman, Cristina Has
Kindler syndrome (KS), a rare, autosomal recessive disorder comprises mechanical skin fragility and photosensitivity, which manifest early in life. The progression of the disorder is irreversible and results in tissue damage in form of cutaneous and mucosal atrophy and scarring and epithelial cancers. Here we unravel molecular mechanisms of increased UV-B sensitivity of keratinocytes derived from KS patients. We show that the pro-inflammatory cytokines, IL-1ß, IL-6 and TNF-α, are upregulated in KS skin and in UV-B irradiated KS keratinocytes...
October 23, 2016: Human Molecular Genetics
https://www.readbyqxmd.com/read/27789968/reduction-of-facial-wrinkles-by-hydrolyzed-water-soluble-egg-membrane-associated-with-reduction-of-free-radical-stress-and-support-of-matrix-production-by-dermal-fibroblasts
#17
Gitte S Jensen, Bijal Shah, Robert Holtz, Ashok Patel, Donald C Lo
OBJECTIVE: The aim of this study was to evaluate the effects of water-soluble egg membrane (WSEM) on wrinkle reduction in a clinical pilot study and to elucidate specific mechanisms of action using primary human immune and dermal cell-based bioassays. METHODS: To evaluate the effects of topical application of WSEM (8%) on human skin, an open-label 8-week study was performed involving 20 healthy females between the age of 45 years and 65 years. High-resolution photography and digital analysis were used to evaluate the wrinkle depth in the facial skin areas beside the eye (crow's feet)...
2016: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/27784516/dermatomyositis-part-1-definition-epidemiology-etiology-and-pathogenesis-and-clinics
#18
REVIEW
Marcia Ramos-E-Silva, Ana Paula Frade Lima Pinto, Rodrigo Pirmez, Tullia Cuzzi, Sueli Coelho da Silva Carneiro
Dermatomyositis is an inflammatory autoimmune disorder that affects the skin, muscles, and blood vessels. The prevailing clinical manifestations are intense erythema, typically around the eyes and dorsum of the hands, accompanied by proximal muscle weakness. There is one clinical form, called amyopathic dermatomyositis, which lacks muscular symptoms and laboratory evidence of muscle damage.
2016: Skinmed
https://www.readbyqxmd.com/read/27779765/the-complex-biology-and-contribution-of-staphylococcus-aureus-in-atopic-dermatitis-current-and-future-therapies
#19
REVIEW
L Hepburn, D J Hijnen, B R Sellman, T Mustelin, M A Sleeman, R D May, I Strickland
Atopic dermatitis (AD) is a complex, chronic inflammatory skin disorder affecting more than 10% of UK children and is a major cause of occupation-related disability. A subset of patients, particularly those with severe AD, are persistently colonised with Staphylococcus aureus (S. aureus) and exacerbation of disease is commonly associated with this bacterium by virtue of increased inflammation and allergic sensitisation, aggravated by skin barrier defects. Understanding the complex biology of S. aureus is an important factor when developing new drugs to combat infection...
October 25, 2016: British Journal of Dermatology
https://www.readbyqxmd.com/read/27770133/-epidermal-barrier-disorders-in-dermatoses
#20
E Proksch, D Dähnhardt, S Dähnhardt-Pfeiffer, R Fölster-Holst
The permeability barrier plays an important role in numerous skin diseases. Particularly well known is the importance of this barrier in eczema. In irritative-toxic contact dermatitis, the first step in the pathogenesis is the disturbance of the permeability barrier by irritative-toxic noxious substances. Only after damage to the barrier is achieved can irritants and allergens penetrate into the living epidermis. In atopic eczema due to an impaired barrier, allergens penetrate from the environment into the skin and cause or worsen the eczema...
October 21, 2016: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
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