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Filaggrin

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https://www.readbyqxmd.com/read/28527695/cytoprotection-proliferation-and-epidermal-differentiation-of-adipose-tissue-derived-stem-cells-on-emu-oil-based-electrospun-nanofibrous-mat
#1
Younes Pilehvar-Soltanahmadi, Mohammad Nouri, Mikaël M Martino, Amir Fattahi, Effat Alizadeh, Masoud Darabi, Mohammad Rahmati-Yamchi, Nosratollah Zarghami
Electrospun nanofibrous scaffolds containing natural substances with wound healing properties such as Emu oil (EO) may have a great potential for increasing the efficiency of stem cell-based skin bioengineering. For this purpose, EO blended PCL/PEG electrospun nanofibrous mats were successfully fabricated and characterized using FE-SEM, FTIR and Universal Testing Machine. The efficiency of the scaffolds in supporting the adherence, cytoprotection, proliferation and differentiation of adipose tissue-derived stem cells (ADSCs) to keratinocyte was evaluated...
May 17, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28526300/embryonic-ap1-transcription-factor-deficiency-causes-a-collodion-baby-like-phenotype
#2
Christina A Young, Richard L Eckert, Gautam Adhikary, Debra Crumrine, Peter M Elias, Miroslav Blumenberg, Ellen A Rorke
AP1 transcription factors are important controllers of gene expression in the epidermis, and altered AP1 factor function can perturb keratinocyte proliferation and differentiation. However, our understanding of how AP1 signaling changes may underlie or exacerbate skin disease is limited. We have shown that inhibiting AP1 factor function in suprabasal adult epidermis leads to reduced filaggrin levels and to a phenotype that resembles the genetic disorder, ichthyosis vulgaris. We now show that inhibiting AP1 factor function during development in embryonic epidermis produces marked phenotypic changes including reduced filaggrin mRNA and protein levels, compromised barrier function, marked ultrastructural change and enhanced dehydration susceptibility that resembles the phenotype observed in the flaky tail mouse, a model for ichthyosis vulgaris...
May 16, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28525834/exposure-to-phenols-parabens-and-uv-filters-associations-with-loss-of-function-mutations-in-the-filaggrin-gene-in-men-from-the-general-population
#3
Ulla N Joensen, Niels Jørgensen, Jacob P Thyssen, Jørgen Holm Petersen, Pal B Szecsi, Steen Stender, Anne-Maria Andersson, Niels E Skakkebæk, Hanne Frederiksen
BACKGROUND: Filaggrin is an epidermal protein that is important for normal skin barrier functions. Up to 10% of Europeans and Asians carry filaggrin gene (FLG) loss-of function mutations that appear to facilitate trans-epidermal penetration of certain chemicals. We previously showed that mutation carriers have higher internal exposure to certain phthalates, compared to controls, and hypothesized that they could have increased trans-epidermal penetration of other chemicals. OBJECTIVES: We investigated exposure to non-persistent chemicals in young Danish men with and without FLG mutations...
May 16, 2017: Environment International
https://www.readbyqxmd.com/read/28522399/anti-allergic-and-profilaggrin-proflg-mrna-expression-modulatory-effects-of-sacran
#4
Nlandu R Ngatu, Keiichi Motoyama, Yasumitsu Nishimura, Maiko Kaneko Okajima, Ryoji Hirota, Taishi Higashi, Suni Lee, Hidetoshi Arima, Mitsunori Ikeda, Sayumi Nojima, Tatsuo Kaneko
Atopic dermatitis (AD) is a skin disorder characterized by filaggrin (FLG) defect. We evaluated sacran's effects on dust-mite extracts (DME)-induced AD-like disease and also its effect on profilaggrin (proFLG) in a murine model of 2,4-dinitroflurobenze (DNFB)-induced contact hypersensitivity. In the murine AD-like disease model, allergic NC/Nga mice (N=60) were randomly divided into five treatment groups of 12 animals each: 0.2% and 1%sacran; 0.1% Tacrolimus; Vaseline and buffer-treated controls. Blood samples were drawn and serum levels of representative Th-1, Th-2 and also Th-17 (IL-17A) cytokines were assayed by Cytometric Bead Array (CBA)...
May 15, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28516256/-skin-diseases-associated-with-environmental-factors
#5
REVIEW
Vera Mahler
BACKGROUND: Multiple environmental exposures may derange the regulatory and repair mechanisms of the skin and lead to dermatological disease. OBJECTIVES: Provide an overview of non-allergic skin diseases associated with environmental factors. MATERIALS AND METHODS: Review of current scientific evidence for associations of non-allergic skin diseases with environmental exposures: irritation, chemicals, infection, UV-radiation, temperature. RESULTS: Predisposition (constitution e...
May 17, 2017: Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz
https://www.readbyqxmd.com/read/28502108/expression-of-the-filaggrin-gene-in-umbilical-cord-blood-predicts-eczema-risk-in-infancy-a-birth-cohort-study
#6
Ali H Ziyab, Susan Ewart, Gabrielle A Lockett, Hongmei Zhang, Hasan Arshad, John W Holloway, Wilfried Karmaus
BACKGROUND: Filaggrin gene (FLG) expression, particularly in the skin, has been linked to the development of the skin barrier and is associated with eczema risk. However, knowledge as to whether FLG expression in umbilical cord blood (UCB) is associated with eczema development and prediction is lacking. OBJECTIVE: This study sought to assess whether FLG expression in UCB associates with and predicts the development of eczema in infancy. METHODS: Infants enrolled in a birth cohort study (n = 94) were assessed for eczema at ages 3-, 6-, and 12-months...
May 14, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28479159/proteomic-analysis-of-filaggrin-deficiency-identifies-molecular-signatures-characteristic-of-atopic-eczema
#7
Martina S Elias, Heather A Long, Carla F Newman, Paul A Wilson, Andrew West, Paul J McGill, Keith C Wu, Michael J Donaldson, Nick J Reynolds
BACKGROUND: Atopic eczema (AE) is characterized by skin barrier and immune dysfunction. Null mutations in filaggrin (FLG), a key epidermal barrier protein, strongly predispose to AE; however, the precise role of FLG deficiency in AE pathogenesis remains incompletely understood. OBJECTIVES: We sought to identify global proteomic changes downstream of FLG deficiency in human epidermal living skin-equivalent (LSE) models and validate findings in skin of patients with AE...
April 28, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28465560/increased-cis-to-trans-urocanic-acid-ratio-in-the-skin-of-chronic-spontaneous-urticaria-patients
#8
Duy Le Pham, Kyung-Min Lim, Kyung-Mi Joo, Hae-Sim Park, Donald Y M Leung, Young-Min Ye
Increased filaggrin expression was found to be correlated with severity scores in chronic spontaneous urticaria (CSU); however, the role of filaggrin breakdown products (FBPs) in CSU has not been studied. We collected stratum corneum (SC) specimens from the volar forearms of 10 CSU patients, 10 AD patients, and 10 healthy normal controls (NCs) and measured contents of FBPs (pyrrolidone carboxylic acid [PCA] and urocanic acid [UCA]) using UPLC-MS/MS, transepidermal water loss (TEWL) and epidermal pH. Compared to NCs, cis-UCA level was increased in CSU lesions (P < 0...
May 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28456621/ige-sensitization-in-relation-to-preschool-eczema-and-filaggrin-mutation
#9
Emma Kristin Johansson, Anna Bergström, Inger Kull, Tomas Lind, Cilla Söderhäll, Marianne van Hage, Magnus Wickman, Natalia Ballardini, Carl-Fredrik Wahlgren
BACKGROUND: Eczema (atopic dermatitis) is associated with an increased risk of having IgE antibodies. IgE sensitization may occur through an impaired skin barrier. Filaggrin (FLG) mutation is associated with eczema, and possibly also with IgE sensitization. OBJECTIVE: To explore the longitudinal relation between preschool eczema and/or FLG mutation and IgE sensitization in childhood. METHODS: A total of 3201 children from the BAMSE birth cohort recruited from the general population were included...
April 26, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28455573/filaggrin-gene-polymorphism-associated-with-epstein-barr-virus-associated-tumors-in-china
#10
Yang Yang, Wen Liu, Zhenzhen Zhao, Yan Zhang, Hua Xiao, Bing Luo
Mutations of filaggrin gene (FLG) have been identified as the cause of ichthyosis vulgaris, while recently FLG mutations were found to be associated with gastric cancer. This study aimed to investigate the association of filaggrin polymorphism with Epstein-Barr virus-associated tumors in China. A total of 200 patients with three types of tumors and 117 normal control samples were genotyped at three common FLG mutation loci (rs3126085, K4671X, R501X) by using Sequenom MassARRAY technique. The χ (2) test was used to evaluate the relationship between the mutation and the three kinds of tumors...
April 28, 2017: Virus Genes
https://www.readbyqxmd.com/read/28447358/increased-filaggrin-expression-in-oral-lichenoid-lesions-is-this-cause-or-effect
#11
S J Brown
No abstract text is available yet for this article.
May 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28431948/serum-peptides-as-putative-modulators-of-inflammation-in-psoriasis
#12
Tetsuhiko Matsuura, Masaaki Sato, Kouhei Nagai, Toshiyuki Sato, Mitsumi Arito, Kazuki Omoteyama, Naoya Suematsu, Kazuki Okamoto, Tomohiro Kato, Yoshinao Soma, Manae S Kurokawa
BACKGROUND: Psoriasis is a refractory inflammatory disease, however, its pathophysiology is still not fully understood. OBJECTIVE: We tried to identify novel serum peptides associated with the pathophysiology of psoriasis. METHODS: Serum peptides from 24 patients with psoriasis vulgaris (PV), 10 patients with psoriatic arthritis (PsA), 14 patients with atopic dermatitis (AD), and 23 healthy control (HC) subjects were analyzed by mass spectrometry...
March 27, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28425595/hand-eczema-atopic-dermatitis-and-filaggrin-mutations-in-adult-danes-a-registry-based-study-assessing-risk-of-disability-pension
#13
Nina G Heede, Betina H Thuesen, Jacob P Thyssen, Allan Linneberg, Pal B Szecsi, Steen Stender, Torkil Menné, Jeanne D Johansen
BACKGROUND: Atopic dermatitis and hand eczema often impair the ability of people to work. Only a few studies have investigated whether individuals with loss-of-function filaggrin gene (FLG) mutations, who often have severe and early onset of dermatitis, experience occupational consequences. OBJECTIVE: To investigate the personal consequences of having atopic dermatitis and/or hand eczema and FLG mutations. METHOD: Adult Danes from the general population (n = 3247) and patients with atopic dermatitis and/or hand eczema (n = 496) were genotyped for common FLG mutations, and completed a questionnaire about skin symptoms and hand eczema...
April 20, 2017: Contact Dermatitis
https://www.readbyqxmd.com/read/28417991/esophageal-and-small-intestinal-mucosal-integrity-in-eosinophilic-esophagitis-and-response-to-an-elemental-diet
#14
Marijn J Warners, Berber J Vlieg-Boerstra, Joanne Verheij, Patricia H P van Hamersveld, Bram D van Rhijn, Marleen T J Van Ampting, Lucien F Harthoorn, Wouter J de Jonge, Andreas J P M Smout, Albert J Bredenoord
OBJECTIVES: The esophageal mucosal integrity is impaired in eosinophilic esophagitis (EoE) and it has been suggested that the duodenal permeability is increased. The absence of food allergens may restore the integrity. The aims of this study were to assess duodenal permeability in EoE and to evaluate the effect of an elemental diet on the esophageal and duodenal integrity. METHODS: In this prospective study 17 adult EoE patients and 8 healthy controls (HC) were included...
April 18, 2017: American Journal of Gastroenterology
https://www.readbyqxmd.com/read/28405264/blt2-expression-improves-skin-integrity-and-protects-from-alterations-caused-by-hyperglycemia-in-type-2-diabetes
#15
Alberto Leguina-Ruzzi, Juan P Valderas
Type 2 diabetes (T2D) can go undiagnosed for years, leading to a stage where chronic high blood sugar produces complications such as delayed wound healing. Reports have shown that BLT2 activation improves keratinocyte migration and wound healing, as well as protecting the epidermal barrier through the promotion of actin polymerization. The goal of this study was to elucidate the role of BLT2 expression in skin epithelial integrity in T2D. For this purpose, we used both wild type (WT) and BLT2 knockout mice in a model, in which a T2D-like phenotype was induced by keeping the animals on a high fat (HF) diet over 5 weeks...
2017: Dermato-endocrinology
https://www.readbyqxmd.com/read/28393458/increased-filaggrin-metabolizing-enzyme-activity-in-atopic-skin-a-pilot-study-using-a-canine-model-of-atopic-dermatitis
#16
Natalia Fanton, Domenico Santoro, Luisa Cornegliani, Rosanna Marsella
BACKGROUND: Filaggrin (FLG) and its metabolites are essential for skin barrier function and hydration of the stratum corneum. Alteration of the FLG metabolism could be the basis for an abnormal skin barrier in allergic dogs. OBJECTIVES: To investigate the expression and distribution of calpain-1, caspase-14, furin and matriptase, four enzymes involved in FLG metabolism, in the skin of atopic and healthy beagles. METHODS: Skin biopsies were collected from four healthy and four atopic beagles before and after allergen exposure...
April 9, 2017: Veterinary Dermatology
https://www.readbyqxmd.com/read/28377574/tslp-is-a-direct-trigger-for-t-cell-migration-in-filaggrin-deficient-skin-equivalents
#17
Leonie Wallmeyer, Kristina Dietert, Michaela Sochorová, Achim D Gruber, Burkhard Kleuser, Kateřina Vávrová, Sarah Hedtrich
Mutations in the gene encoding for filaggrin (FLG) are major predisposing factors for atopic dermatitis (AD). Besides genetic predisposition, immunological dysregulations considerably contribute to its pathophysiology. For example, thymic stromal lymphopoietin (TSLP) is highly expressed in lesional atopic skin and significantly contributes to the pathogenesis of AD by activating dendritic cells that then initiate downstream effects on, for example, T cells. However, little is known about the direct interplay between TSLP, filaggrin-deficient skin and other immune cells such as T lymphocytes...
April 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28358172/expression-of-filaggrin-and-its-degradation-products-in-human-skin-following-erythemal-doses-of-ultraviolet-b-irradiation
#18
Stine Simonsen, Jacob P Thyssen, Steffen Heegaard, Sanja Kezic, Lone Skov
Epidermal filaggrin level is affected by ultraviolet B irradiation in animal and experimental models. This study examined the effect of ultraviolet B irradiation on epidermal filaggrin and natural moisturizing factors in vivo in healthy adults (n = 22). Participants were irradiated with 2 minimal erythema doses of ultraviolet B on the skin. Biopsies and tape strips were collected from skin irradiated 24 and 72 h earlier and from non-irradiated skin (control). Real-time quantitative PCR on skin biopsies showed significantly reduced profilaggrin mRNA expression 24 h after irradiation (mean relative mRNA expression ± standard deviation: control, control, 3...
March 30, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/28347830/inhibitory-effect-of-patrinia-scabiosifolia-link-on-the-development-of-atopic-dermatitis-like-lesions-in-human-keratinocytes-and-nc-nga-mice
#19
Kyung-Jae Cha, Mi Ae Im, Ayoung Gu, Da Hye Kim, Daye Lee, Jeong Soo Lee, Ji-Sook Lee, In Sik Kim
ETHNOPHARMACOLOGICAL RELEVANCE: Atopic dermatitis (AD) is a chronic pruritic and inflammatory disease occurring in skin. Patrinia scabiosifolia Link (PS), a member of the Patrinia genus (Caprifoliaceae family), has traditionally been used in folk medicines to treat various inflammatory diseases such as acute appendicitis, ulcerative colitis, and pelvic inflammation in Korea and other parts of East Asia. AIM OF THE STUDY: This study investigated the anti-inflammatory effects of PS on AD in vitro and in vivo...
March 24, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28338939/it-remains-unknown-whether-filaggrin-gene-mutations-evolved-to-increase-cutaneous-synthesis-of-vitamin-d
#20
Jacob P Thyssen, Peter M Elias
About 8-10% of normal Northern Europeans are heterozygous carriers of common FLG mutations, while only 1-4% of southern Europeans display these mutations, and only very rarely are mutations detected in African populations. Although mutations are found in Asians, they are different from those encountered in Northern Europeans. Importantly, FLG mutation carriers have 10% increased serum vitamin D concentrations compared to controls. Based on these observations, we have proposed that this latitude-dependent gradient of FLG mutations across Europe, Asia and Africa could have provided an evolutionary advantage for heterozygous FLG mutation carriers, residing at northern latitudes, depletion of the FLG downstream product, trans-urocanic acid, would facilitate the intracutaneous synthesis of vitamin D3 by allowing increased transcutaneous absorption of UVB photons...
April 1, 2017: Genome Biology and Evolution
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