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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
S E Choon, C F Ngim, S Premaa, K W Tey, M N Nalini
BACKGROUND: Limited information exists regarding paediatric psoriasis and its association with body mass index (bMI) in Asia. OBJECTIVES: to determine the clinico-epidemiological profile and to compare the bMI of children with and without psoriasis. METHODS: A case-control study of 92 children with psoriasis versus 59 with atopic eczema and 56 with non-inflammatory skin conditions. RESULTS: Psoriasis was more common in Malay and Indian children when compared to Chinese with odds ratios (Or) of 4...
August 2016: Medical Journal of Malaysia
Satomi Igawa, Mari Kishibe, Masako Minami-Hori, Masaru Honma, Hisashi Tsujimura, Junko Ishikawa, Tsutomu Fujimura, Masamoto Murakami, Akemi Ishida-Yamamoto
Atopic dermatitis (AD) is a common inflammatory skin disorder. Chronic AD lesions present hyperkeratosis, indicating a disturbed desquamation process. Kallikrein-related peptidase (KLK) 7 is a serine protease involved in the proteolysis of extracellular corneodesmosome (CD) components, including desmocollin1 and corneodesmosin (Cdsn), which leads to desquamation. KLK7 is secreted by lamellar granules, and upregulated in AD lesional skin. However, despite increased KLK7 protein levels, immunostaining and electron microscopy indicated numerous CDs remaining in the uppermost layer of the stratum corneum (SC) from AD lesions...
October 18, 2016: Journal of Investigative Dermatology
M R Williams, T Nakatsuji, J A Sanford, A F Vrbanac, R L Gallo
Bacteria that reside on the skin can influence the behavior of the cutaneous immune system, but the mechanisms responsible for these effects are incompletely understood. Colonization of the skin by Staphylococcus aureus (S. aureus) is increased in atopic dermatitis (AD) and can result in increased severity of the disease. In this study we show that S. aureus stimulates human keratinocytes to increase their endogenous protease activity, including specific increases in trypsin activity. This increased protease activity coincided with increased expression of mRNA for kallikreins (KLKs), with KLK6, 13, and 14 showing the greatest induction after exposure to S...
October 17, 2016: Journal of Investigative Dermatology
T Kamigaki, K Naitoh, S Goto
No abstract text is available yet for this article.
October 2016: Journal of Investigational Allergology & Clinical Immunology
F L Nowrouzian, G Lina, E Hodille, E Lindberg, B Hesselmar, R Saalman, I Adlerberth, A E Wold
According to the hygiene hypothesis, insufficient immune activation by microbes increases the risk of allergy development. Staphylococcus aureus, which is part of the skin and gut microbiota of infants in Western countries, produces a variety of T-cell-activating enterotoxins, called superantigens. We investigated whether early (0-2 months of age) gut colonisation by S. aureus strains that carry specific superantigens and adhesins was related to subsequent development of atopic eczema in a Swedish birth-cohort...
October 19, 2016: British Journal of Dermatology
Georgios Nikolakis, Constantine A Stratakis, Theodora Kanaki, Andrej Slominski, Christos C Zouboulis
The skin is an important extra-gonadal steroidogenic organ, capable of metabolizing various hormones from their precursors, as well as of synthesizing de novo a broad palette of sex steroids and glucocorticoids from cholesterol. In this manuscript, we review the major steroidogenic properties of human skin and we suggest steroidogenesis' impairment as a cardinal factor for various pathological conditions such as acne, rosacea, atopic dermatitis, and androgenic alopecia.
October 20, 2016: Reviews in Endocrine & Metabolic Disorders
M Fujimura, Y Nakatsuji, H Ishimaru
In this study, dogs were separated into two groups and treated with immunosuppressant (Cyclosporin A: CsA). The first group was the canine atopic dermatitis (CAD) group, which is similar to extrinsic atopic dermatitis (AD) in humans (treated with a CsA dose of 2.5-5.5 mg/kg, n=8), and the second group was the canine atopic-like dermatitis (ALD) group, which is similar to intrinsic AD in humans (treated with a CsA dose of 2.5-6.5 mg/kg, n=14). The canine atopic dermatitis extent and severity index (CADESI)-4 was evaluated before treatment (PRE) and after treatment (POST) to assess the effectiveness of CsA for the two groups...
September 1, 2016: Polish Journal of Veterinary Sciences
Justin C Chia, P Régine Mydlarski
PURPOSE: Omalizumab is a recombinant humanized monoclonal antibody that inhibits the binding of IgE to the high-affinity IgE receptor (FceRI) on the surface of mast cells and basophils. Omalizumab has been approved for use in asthma, and new reports show promise in a variety of dermatologic diseases. Herein, we review the literature on omalizumab in dermatology and discuss the safety, efficacy and mechanisms of action for this emerging therapy. MATERIALS AND METHODS: PubMED, MEDLINE, and Embase databases were searched for the period January 1, 1990, to September 1, 2016...
October 19, 2016: Journal of Dermatological Treatment
Fozia Roked, Jonathan North
No abstract text is available yet for this article.
October 18, 2016: Archives of Disease in Childhood. Education and Practice Edition
Chih-Hung Lee, Jau-Shiuh Chen, Hsien-Ching Chiu, Chien-Hui Hong, Ching-Yi Liu, Yng-Cun Ta, Li-Fang Wang
BACKGROUND: Epicutaneous immunization with allergens is an important sensitization route for atopic dermatitis. We recently showed in addition to the Th2 response following single epicutaneous immunization, a remarkable Th1 response is induced in B6 mice, but not in BALB/c mice, mimicking the immune response to allergens in human non-atopics and atopics. OBJECTIVE: We investigated the underlying mechanisms driving this differential Th1 response between BALB/c and B6 mice...
October 3, 2016: Journal of Dermatological Science
C Gonçalves, G Wandalsen, F Lanza, A L Goulart, D Solé, A Dos Santos
BACKGROUND: Prevalence of allergic diseases and impaired pulmonary function may be high in children born prematurely. This study aimed to assess pulmonary function and prevalence of asthma, atopic diseases and allergic sensitisation in these patients. METHODS: A cross-sectional study was conducted with children aged 6-14 years who were born prematurely with birth weight <2000g from January 2008 to May 2011. Exclusion criteria were: major malformations, or acute respiratory disorders...
October 15, 2016: Allergologia et Immunopathologia
Teresa Stemeseder, Eva Klinglmayr, Stephanie Moser, Lisa Lueftenegger, Roland Lang, Martin Himly, Gertie J Oostingh, Joerg Zumbach, Arne C Bathke, Thomas Hawranek, Gabriele Gadermaier
BACKGROUND: Allergen specific IgE antibodies are a hallmark of type I allergy. The aim of this cross-sectional study was to analyze the sensitization profiles of an Austrian adolescent population utilizing molecule-based IgE diagnosis. METHODS: Serum samples of 501 non-selected pupils from Salzburg, Austria, were tested in ImmunoCAP ISAC(®) for IgE reactivity to 112 single allergens. Sensitization profiles were assessed and statistically coordinated with reported allergies...
October 18, 2016: Allergy
Alan N Baer, Ayako Okuhama, David W Eisele, Jody R Tversky, Thomas J Gniadek
Sialodochitis fibrinosa and allergic parotitis have described rare patients with recurrent salivary gland swelling and mucus plugs, often with atopy. We have evaluated three patients with atopic disease, recurrent salivary gland swelling and an eosinophilic sialodochitis. Two had eosinophil-rich mucus plugs. 56 additional cases were identified in a medical literature database search, each defined by recurrent salivary gland swelling associated with eosinophil-rich mucus plugs or sialodochitis with periductal eosinophilic infiltration...
October 17, 2016: Oral Diseases
Chung Eui You, Seok Hoon Moon, Kwang Hoon Lee, Kyu Han Kim, Chun Wook Park, Seong Joon Seo, Sang Hyun Cho
BACKGROUND: Atopic dermatitis (AD) is a common, complex disease that follows a chronic relapsing course and significantly affects the quality of life of patients. Skin barrier dysfunction and inflammatory processes induce and aggravate this skin condition. Proper use of an emollient for hydration is a keystone of AD treatment. Bee venom is known to have anti-inflammatory effects and has been widely used in traditional medicine to treat various inflammatory disorders. OBJECTIVE: To find out the beneficial effect of an emollient containing bee venom in the treatment of patients with AD...
October 2016: Annals of Dermatology
Ivana V Yang, Brent S Pedersen, Andrew H Liu, George T O'Connor, Dinesh Pillai, Meyer Kattan, Rana Tawil Misiak, Rebecca Gruchalla, Stanley J Szefler, Gurjit K Khurana Hershey, Carolyn Kercsmar, Adam Richards, Allen D Stevens, Christena A Kolakowski, Melanie Makhija, Christine A Sorkness, Rebecca Z Krouse, Cynthia Visness, Elizabeth J Davidson, Corinne E Hennessy, Richard J Martin, Alkis Togias, William W Busse, David A Schwartz
BACKGROUND: Given the strong environmental influence on both epigenetic marks and allergic asthma in children, the epigenetic alterations in respiratory epithelia might provide insight into allergic asthma. OBJECTIVE: We sought to identify DNA methylation and gene expression changes associated with childhood allergic persistent asthma. METHODS: We compared genomic DNA methylation patterns and gene expression in African American children with persistent atopic asthma (n = 36) versus healthy control subjects (n = 36)...
October 13, 2016: Journal of Allergy and Clinical Immunology
Doris Weiss, Michaela Schaschinger, Robin Ristl, Robert Gruber, Tamara Kopp, Georg Stingl, Christine Bangert
BACKGROUND: It has recently been suggested that patients with moderate to severe atopic dermatitis (AD) may profit from anti-interleukin (IL)-12/-23 p40 therapy. OBJECTIVE: We sought to assess the immunologic effects of ustekinumab treatment on AD skin and to correlate them with the clinical efficacy of this drug. METHODS: We investigated the course of 3 patients with severe AD who were administered 45 mg of subcutaneous ustekinumab over a period of 16 weeks...
October 13, 2016: Journal of the American Academy of Dermatology
Benjamin Farahnik, Kourosh Beroukhim, Melissa Danesh, Mio Nakamura, Michael Abrouk, Tian Hao Zhu, Rasnik Singh, Kristina Lee, Tina Bhutani, John Koo
No abstract text is available yet for this article.
November 2016: Journal of the American Academy of Dermatology
Juhwan Noh, Jungwoo Sohn, Jaelim Cho, Seong-Kyung Cho, Yoon Jung Choi, Changsoo Kim, Dong Chun Shin
OBJECTIVES: The goal of this study was to investigate the short-term effect of ambient air pollution on emergency department (ED) visits in Seoul for asthma according to patients' prior history of allergic diseases. METHODS: Data on ED visits from 2005 to 2009 were obtained from the Health Insurance Review and Assessment Service. To evaluate the risk of ED visits for asthma related to ambient air pollutants (carbon monoxide [CO], nitrogen dioxide [NO2], ozone [O3], sulfur dioxide [SO2], and particulate matter with an aerodynamic diameter <10 μm [PM10]), a generalized additive model with a Poisson distribution was used; a single-lag model and a cumulative-effect model (average concentration over the previous 1-7 days) were also explored...
September 2016: Journal of Preventive Medicine and Public Health, Yebang Ŭihakhoe Chi
Masafumi Moriyama, Seiji Nakamura
IgG4-related disease (IgG4-RD) is a systemic disease characterized by elevated serum IgG4 levels and a strong infiltration of IgG4-positive plasma cells in various organs. IgG4-RD patients also frequently suffer from allergic diseases, including asthma and atopic dermatitis. It is well known that T helper type 2 (Th2) cells have an important role in the initiation of allergic diseases, and Th2 cytokines such as interleukin (IL)-4 and IL-13 promote class switching to IgG4. Therefore, IgG4-RD is considered to be a Th2-predominant disease...
October 16, 2016: Current Topics in Microbiology and Immunology
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