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https://www.readbyqxmd.com/read/29166512/segmental-lichen-aureus-an-uncommon-presentation
#1
Pedro de Freitas Silva Torraca, Nathalia Dias Negrão Murback, Nayara de Castro Wiziack, Tânia Christina Marchesi de Freitas, Greicy Mara França
Pigmented purpuric dermatoses are chronic vascular inflammatory conditions characterized by the presence of pigmented macules. Among its different presentations, lichen aureus is distinguished by the lichenoid conformation of its plaques and the predilection for lower limb involvement. Its segmented form is rare and difficult to control, especially in cases of symptomatic lesions. We report a rare case of segmental lichen aureus with six years of evolution associated with light itching. We also discuss the main therapeutic approaches to control the disease...
September 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/29165803/rust-colored-patches-on-the-lower-extremities-lichen-aureus
#2
Simon F Roy, Feras M Ghazawi, Nathalie Provost
No abstract text is available yet for this article.
November 22, 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/29160215/a-case-of-lichen-planus-pemphigoides-with-palmoplantar-keratoderma
#3
Megumi Mizawa, Teruhiko Makino, Masao Hayashi, Fumina Furukawa, Tadamichi Shimizu
No abstract text is available yet for this article.
November 21, 2017: European Journal of Dermatology: EJD
https://www.readbyqxmd.com/read/29156281/dry-hot-stress-significantly-reduced-the-nitrogenase-activity-of-epiphytic-cyanolichen
#4
Shuai Liu, Wenyao Liu, Xianmeng Shi, Su Li, Tao Hu, Liang Song, Chuansheng Wu
Nitrogen (N) fixed by epiphytic cyanolichens (i.e. lichens that contain cyanobacterial symbionts) is thought to be the most important resource of this nutrient in some natural forest ecosystems. Although a great deal of work has been carried out to evaluate the biomass of this group as well as its contribution to ecosystem N budgets, empirical studies are needed to confirm the N input responses by cyanolichens under climate change conditions (dry-hot stress) as well as to determine the factors that control this process...
November 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29155927/specialized-fungal-parasites-reduce-fitness-of-their-lichen-hosts
#5
Sonia Merinero, Yngvar Gauslaa
Background and aims: Understanding to what extent parasites affect host fitness is a focus of research on ecological interactions. Fungal parasites usually affect the functions of vascular plants. However, parasitic interactions comprising effects of fungal parasites on the fitness of lichen hosts are less well known. This study assesses the effects of the abundance of two highly specialized gall-forming fungi on growth of their two respective lichen hosts and tests whether these fungal parasites reduce lichen fitness...
November 16, 2017: Annals of Botany
https://www.readbyqxmd.com/read/29155234/survivin-and-autoimmunity-the-ins-and-outs
#6
REVIEW
Hamidreza Ebrahimiyan, Saeed Aslani, Nima Rezaei, Ahmadreza Jamshidi, Mahdi Mahmoudi
Autoimmunity is a status that immune mechanisms react against self-structure. The immune mechanisms, including cellular and molecular elements have been developed to immune body against foreign invades. Multiple factors such as genetic and epigenetic background, hormonal status, microbiome, and other factors can cause launching the autoreactive responses, in which the immune tolerance breaks and immune mechanisms are against self-antigens. Apoptosis is one of the important mechanisms in maintaining the tolerance and eliminating the autoreactive lymphocyte clones...
November 16, 2017: Immunology Letters
https://www.readbyqxmd.com/read/29155096/patients-with-atopic-dermatitis-and-history-of-eczema-herpeticum-elicit-hsv-specific-type-2-immune-responses
#7
Stephan Traidl, Petra Kienlin, Gabriele Begemann, Lichen Jing, David M Koelle, Thomas Werfel, Lennart M Roesner
An increased type 2 and in parallel decreased type 1 T cell immune response to herpes simplex virus 1 may lead to the clinical phenotype of eczema herpeticum.
November 15, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29148712/constructing-repairable-meta-structures-of-ultra-broadband-electromagnetic-absorption-from-3d-printed-patterned-shells
#8
Wei-Li Song, Zhili Zhou, Lichen Wang, Xiao-Dong Cheng, Mingji Chen, Rujie He, Hao-Sen Chen, Yazheng Yang, Daining Fang
Ultra-broadband electromagnetic absorption materials and structures are increasingly attractive for their critical role in competing to the advanced broadband electromagnetic detective systems. Mechanically soft and weak wax-based materials composites are known to be insufficient to serve for practical electromagnetic absorption applications. To break through such barriers, here we developed an innovative strategy to enable the wax-based composites as robust and repairable meta-structures by employing a 3D printed polymeric patterned shell...
November 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29146053/usefulness-of-a-direct-immunofluorescence-in-the-diagnosis-of-plaque-type-oral-lichen-planus
#9
Patricia Alejandra Masquijo-Bisio, Mariana Silvia Gandolfo, Alicia Keszler, Maria Elina Itoiz, María Luisa Paparella
No abstract text is available yet for this article.
December 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/29144206/c-jun-expression-in-lichen-planus-psoriasis-and-cutaneous-squamous-cell-carcinoma-an-immunohistochemical-study
#10
Asmaa Gaber Abdou, Alaa Hassan Marae, Mohammed Shoeib, Ghada Dawood, Enas Abouelfath
The AP-1 transcription factor complex is a key player in regulating inflammatory processes, cell proliferation, differentiation and cell transformation. The aim of the present study is to investigate C-Jun (one of AP-1complex) expression and its proliferative role in skin samples of lichen planus, psoriasis as common inflammatory skin diseases and squamous cell carcinoma using immunohistochemical method. The present study was carried out on skin biopsies of 15 psoriatic patients, 15 lichen planus patients, 15 SCC and 15 normal skin biopsies...
November 16, 2017: Journal of Immunoassay & Immunochemistry
https://www.readbyqxmd.com/read/29143417/can-antarctic-lichens-acclimatise-to-changes-in-temperature
#11
Claudia Colesie, Burkhard Büdel, Vaughan Hurry, T G Allan Green
The Antarctic Peninsula, a tundra biome dominated by lichens and bryophytes, is an ecozone undergoing rapid temperature shifts. Such changes may demand a high physiological plasticity of the local lichen species in order for them to maintain their role as key drivers in this pristine habitat. This study examines the response of net photosynthesis and respiration to increasing temperatures for three Antarctic lichen species with different ecological response amplitudes. We hypothesise that negative effects caused by increased temperatures can be mitigated by thermal acclimation of respiration and/or photosynthesis...
November 15, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29141063/novel-treatment-using-low-dose-naltrexone-for-lichen-planopilaris
#12
Lauren C Strazzulla, Lorena Avila, Kristen Lo Sicco, Jerry Shapiro
<p>Lichen planopilaris (LPP) is a variant of lichen planus that affects the scalp causing scarring hair loss. Patients also frequently experience symptoms of scalp itch, pain, and burning. To date, there are no long-term remittive nor curative therapies available. Low-dose naltrexone has anti-inflammatory properties and has recently been described in the context of treating autoimmune conditions. This retrospective medical record review describes four LPP patients treated with low-dose (3 milligrams per day) naltrexone...
November 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29140882/extravascular-migratory-metastasis-pericytic-mimicry-in-sarcomatoid-squamous-cell-carcinoma-of-the-vulva-a-report-of-2-cases
#13
M H Eleanor Koay, Colin J R Stewart
Extravascular migratory metastasis (EVMM), also known as pericytic mimicry or angiotropism, is a mechanism of angiocentric tumor spread that has been investigated mainly in cutaneous malignant melanoma where it has been associated with an increased risk of metastasis. In EVMM, the tumor cells spread along the external (ablumenal) aspect of vessels without breaching the endothelium, a process that is therefore distinct from the more widely recognized intraluminal invasion. Although EVMM has also been reported in a limited range of other tumor types, to our knowledge it has not been described in squamous cell carcinoma (SCC)...
November 14, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/29139359/oral-lichen-planus-a-cross-sectional-descriptive-study-of-33-patients
#14
Virendra N Sehgal, Nazim Hussain Syed, Ashok Aggarwal, Shruti Sehgal
Oral lichen planus (OLP), a well-known entity, is often neglected; however, its assessment is considered essential for evolving future strategies for treatment. Thirty-three patients with OLP from 200 consecutive patients with oral mucosal lesions were studied according to demography. Tobacco chewing, smoking, and alcohol intake were recorded. Examination of the oral cavity, using a head light and tongue depressor, was undertaken to define the morphology of the lesion(s). Colored photographs were an essential part of the process...
2017: Skinmed
https://www.readbyqxmd.com/read/29139037/prevalence-of-oral-lichen-planus-in-iranian-children-and-adolescents-a-12-year-retrospective-study
#15
S Bakhtiari, J B Taheri, P Toossi, S Azimi, Sh Kawosi Nezhad
AIM: To investigate the prevalence of oral lichen planus in patients younger than 18 years, referred to a dermatology centre in Iran during 2002-2014. Lichen planus is a chronic inflammatory, immune-mediated disease that could affect the oral mucosa and is a pre-cancerous condition. The disease usually develops in middle age with female predominance and is rare in children. METHODS: In this retrospective study, cases with definitive histopathologic diagnosis of lichen planus, over a 12-year period from 2002 to 2014 from a dermatologic hospital archive were evaluated...
November 14, 2017: European Archives of Paediatric Dentistry: Official Journal of the European Academy of Paediatric Dentistry
https://www.readbyqxmd.com/read/29138813/reduced-mirna%C3%A2-214-expression-in-oral-mucosa-contributes-to-the-pathogenesis-of-oral-lichen-planus-by-targeting-cd44
#16
Haiyan Zheng, Shaohui Li
The present study aimed to investigate the role of miRNAs during the pathogenesis of oral lichen planus (OLP). OLP is a chronic inflammatory disorder, which involves T‑cell mediated autoimmunity and affects the skin, scalp, nails and mucosa. Abundant T lymphocytes have been demonstrated to infiltrate the oral mucosa, in which the activated T cells trigger apoptosis of oral epithelial cells. Overexpression of osteopontin (OPN) and CD44 has been observed in the mucosa of patients with OLP, and it has been confirmed that OPN suppresses the apoptosis of activated CD8+ T cells via CD44...
November 10, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29137809/prognostic-factors-for-local-recurrence-of-squamous-cell-carcinoma-of-the-vulva-a-systematic-review
#17
Nienke C Te Grootenhuis, Anne-Floor W Pouwer, Geertruida H de Bock, Harry Hollema, Johan Bulten, Ate G J van der Zee, Joanne A de Hullu, Maaike H M Oonk
BACKGROUND: In patients treated for early-stage squamous cell vulvar carcinoma local recurrence is reported in up to 40% after ten years. Knowledge on prognostic factors related to local recurrences should be helpful to select high risk patients and/or to develop strategies to prevent local recurrences. OBJECTIVE: This systematic review aims to evaluate the current knowledge on the incidence of local recurrences in vulvar carcinoma related to clinicopathologic and cell biologic variables...
November 11, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/29136569/unleaded-gasoline-as-a-significant-source-of-pb-emissions-in-the-subarctic
#18
Vladislav Chrastný, Hana Šillerová, Martina Vítková, Anna Francová, Jan Jehlička, Jana Kocourková, Paul E Aspholm, Lars O Nilsson, Tore F Berglen, Henning K B Jensen, Michael Komárek
After the phasing out of leaded gasoline, Pb emissions to the atmosphere dramatically decreased, and other sources became more significant. The contribution of unleaded gasoline has not been sufficiently recognized; therefore, we evaluated the impact of Pb from unleaded gasoline in a relatively pristine area in Subarctic NE Norway. The influence of different endmembers (Ni slag and concentrate from the Nikel smelter in Russia, PM10 filters, and traffic) on the overall Pb emissions was determined using various environmental samples (snow, lichens, and topsoils) and Pb isotope tracing...
November 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/29135114/expression-and-role-of-p53-in-oral-lichen-planus-patients
#19
Milos Hadzi-Mihailovic, Renata Petrovic, Helene Raybaud, Dragan Stanimirovic, Meltem Ozar Koray
PURPOSE: Oral lichen planus (OLP) is an autoimmune skin and mucosal disorder. The range of malignant transformation in OLP varies between 0.1-3%. p53 is a tumor suppressor protein. Defective p53 could allow abnormal cells to proliferate, resulting in cancer. p53 plays an important role in cell cycle control and apoptosis and loss of p53 function has been demonstrated in about half of all human cancers. The purpose of the study was to investigate the malignant potential of OLP on the basis of p53 expression and to correlate p53 expression with clinical and histopathological features of OLP...
September 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29133389/selective-killing-of-helicobacter-pylori-with-ph-responsive-helix-coil-conformation-transitionable-antimicrobial-polypeptides
#20
Menghua Xiong, Yan Bao, Xin Xu, Hua Wang, Zhiyuan Han, Zhiyu Wang, Yeqing Liu, Songyin Huang, Ziyuan Song, Jinjing Chen, Richard M Peek, Lichen Yin, Lin-Feng Chen, Jianjun Cheng
Current clinical treatment of Helicobacter pylori infection, the main etiological factor in the development of gastritis, gastric ulcers, and gastric carcinoma, requires a combination of at least two antibiotics and one proton pump inhibitor. However, such triple therapy suffers from progressively decreased therapeutic efficacy due to the drug resistance and undesired killing of the commensal bacteria due to poor selectivity. Here, we report the development of antimicrobial polypeptide-based monotherapy, which can specifically kill H...
November 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
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