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https://www.readbyqxmd.com/read/28318188/-zosteriform-lichen-aureus-pediatric-clinical-case
#1
Álvaro Rivera-Rodríguez, Sergio Hernández Ostiz, Ana L Morales-Moya, Lucía Prieto-Torres, Marcial Álvarez-Salafranca, Mariano Ara Martín
Lichen aureus is a rare pigmented purpuric dermatosis. We present an unusual case because of the pediatric age and the great number of lesions with zosteriform distribution. He is a 10-yearold boy, with a brownish, smaller than 1 cm, sharp edges, lichenified surface, asymptomatic macule, over the inner aspect of the left leg with a zosteriform distribution. The histology showed a band-like inflammatory infiltrate in the superficial dermis, composed of lymphocytes, histiocytes, erythrocytes and haemosiderin...
April 1, 2017: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/28317358/-epidemiological-investigation-of-chewing-fresh-or-dried-betel-nut-and-oral-mucosal-disease
#2
Du Yongxiu, Sun Dongye, Jian Xinchun, Mao Qiuhua, Cheng Yanan, Xu Pu
OBJECTIVE: This study was conducted to investigate the effect of chewing fresh or dried betel nut on the inci-dence and canceration of oral mucosa disease in Haikou City in Hainan Province. METHODS: Through a survey questionnaire, clinical examination, and regular follow-up, we collected clinical data from 1 722 cases and divided them into two groups, among which 704 of the afflicted people chew dried betel nut, whereas the other 1 018 chew fresh betel nut. The data were 
statistically analyzed using different variables which included age, number, time of onset of the disease, and the cancerous condition associated with common oral mucosa disease, including oral submucous fibrosis (OSF), oral leukoplakia (OLK), and oral Lichen planus (OLP)...
August 1, 2016: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/28316915/pan-masala-habits-and-risk-of-oral-precancer-a-cross-sectional-survey-in-0-45-million-people-of-north-india
#3
Divya Mehrotra, Sumit Kumar, Shambhavi Mishra, Sandeep Kumar, Prashant Mathur, C M Pandey, Arvind Pandey, Kishore Chaudhry
OBJECTIVES: This cross-sectional community based study was conducted to estimate the prevalence of consumption habits for non tobacco pan masala (ASU) and the risk of developing oral precancer in North India. METHODS: This study was conducted in the old town of Lucknow city in the state of Uttar Pradesh in India. Subjects residing for more than 6 months and aged 15 years or above, were enrolled in the study after their informed consent. A two page survey tool was used to collect the data...
January 2017: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/28304209/subgingival-microbiota-in-caucasian-patients-with-desquamative-gingivitis-a-cross-sectional-study
#4
Paolo G Arduino, Federica Romano, Danilo Sasia, Roberto Broccoletti, Fulvio Ricceri, Anna Maria Barbui, Silvia Brossa, Raffaella Cipriani, Luca Cricenti, Marco Cabras, Mario Aimetti
BACKGROUND: The presence of epithelial desquamation, erythema, and erosions on the gingival tissue is usually described in literature as desquamative gingivitis (DG). A wide range of autoimmune/dermatological disorders can manifest as DG, although the two more common are oral lichen planus and mucous membrane pemphigoid. The aim of this study was to investigate the prevalence of 11 periodonto-pathogenic microorganisms in DG cases and to compare it with microbiologic status of individuals affected by plaque-induced gingivitis (GI)...
March 17, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28300913/acral-papular-mucinosis-a-new-case-of-this-rare-entity
#5
María Encarnación Gómez Sánchez, Fernando de Manueles Marcos, Maria Luisa Martínez Martínez, Roberto Vera Berón, Jose Manuel Azaña Défez
Acral persistent papular mucinosis (APPM) is a rare subtype of localized lichen myxedematosus. It consists of small papules localized exclusively on the back of the hands, wrists and extensor aspects of distal forearms with no other clinical or laboratory manifestations. The lesions tend to persist and may increase slowly in number. Histologically, hematoxylin-eosin and Alcian blue staining demonstrate mucin accumulation in the upper reticular dermis with separation of collagen fibers as a result of hyaluronic acid deposition...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28300903/extensive-bullous-lichen-sclerosus-et-atrophicus
#6
Jelica Vukicevic
Lichen sclerosus et atrophicus is a chronic disease of unknown etiology characterized by atrophic and sclerotic plaques in both genital and extragenital regions. Extensive bullous lichen sclerosus et atrophicus (BLSA) is a severe variant of the disease with no widely accepted treatment. We present a 63-year-old woman with extensive extragenital, ivory-colored, atrophic plaques on her trunk and extremities and disseminated hemorrhagic bullae. The patient was unsuccessfully treated with standard topical corticosteroid therapy, doxycycline and chloroquine...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28300891/lichen-planopilaris-like-eruption-during-treatment-with-tyrosine-kinase-inhibitor-nilotinib
#7
Juliana Ribeiro Leitão, Neusa Yuriko Sakai Valente, Priscila Kakizaki, Isis Suga Veronez, Mario Cezar Pires
Tyrosine kinase inhibitors are effective as a target therapy for malignant neoplasms. Imatinib was the first tyrosine kinase inhibitor used. After its introduction, several other drugs have appeared with a similar mechanism of action, but less prone to causing resistance. Even though these drugs are selective, their toxicity does not exclusively target cancer cells, and skin toxicity is the most common non-hematologic adverse effect. We report an eruption similar to lichen planopilaris that developed during therapy with nilotinib, a second generation tyrosine kinase inhibitor, in a patient with chronic myeloid leukemia resistant to imatinib...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28300883/coexistence-of-nail-lichen-planus-and-lichen-planus-pigmentosus
#8
Luciana Rodino Lemes, Renata Brandão Villa Verde, Sandra Maria Barbosa Durães, Adolpho de Alencar Araripe, Luciana Pantaleão
We describe a fifty-six-year old, Afro-descendent female patient showing dystrophy of her twenty nails and hyperchromic, asymptomatic macule on her face. Histopathological examination of the macule showed vacuolization of the basal layer, melanophages in the superficial dermis and lymphoplasmocytic inflammatory infiltrate. Nail biopsy revealed orthokeratotic hyperkeratosis and lichenoid inflammatory infiltrate. Lichen planus pigmentosus is an uncommon variety of lichen planus. It is characterized by typical hyperpigmented macules on the face and neck...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28300881/frontal-fibrosing-alopecia-in-association-with-sj%C3%A3-gren-s-syndrome-more-than-a-simple-coincidence
#9
Karina Colossi Furlan, Priscila Kakizaki, Juliana Cabral Nunes Chartuni, Neusa Yuriko Sakai Valente
Frontal fibrosing alopecia is a distinctive form of scarring alopecia considered to be a clinical variant of lichen planopilaris. It predominantly occurs in postmenopausal women and has a slowly progressive course. It was first described by Kossard in 1994. Since then the number of reported cases has increased significantly. Coexistence of frontal fibrosing alopecia and autoimmune disorders - such as discoid erythematosus lupus and Sjögren's syndrome - may suggest a common pathogenic background among the diseases...
September 2016: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28296845/a-lift-for-lichens
#10
Roger Drouin
No abstract text is available yet for this article.
March 14, 2017: Scientific American
https://www.readbyqxmd.com/read/28296743/association-between-polymorphisms-in-interleukins-and-oral-lichen-planus-a-meta-analysis
#11
Quan Shi, Tong Zhang, Na Huo, Yang Huang, Juan Xu, Hongchen Liu
BACKGROUND: More and more studies have suggested that single-nucleotide polymorphisms (SNPs) in interleukin (IL) genes are correlated with an increased risk of developing oral lichen planus (OLP). However, these results were inconsistent. Therefore, the aim of this meta-analysis is to retrieve and comprehensively analyze all related clinical studies to investigate the association of ILs gene polymorphisms with the OLP risk. METHODS: PubMed, Embase, and the Cochrane Library were searched for eligible studies to evaluate the association between IL polymorphisms and the OLP...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28296214/morphological-secondary-metabolite-and-its-rdna-variability-within-usnic-acid-containing-lichen-thalli-of-the-genus-xanthoparmelia-explored-at-the-local-scale-of-rock-outcrop-in-western-italian-alps
#12
Enrica Matteucci, Andrea Occhipinti, Rosanna Piervittori, Massimo E Maffei, Sergio E Favero-Longo
Lichen secondary metabolites (LSMs) are regarded with interest for valuable biological properties, but chemical variability among/within lichen taxa has been only fragmentarily characterized by advanced analytical techniques. Knowledge of variability at a local geographic scale has been particularly neglected, while it should address the collection of chemically homogeneous materials to test and exploit LSMs. Here we evaluated the chemical variability of 48 Xanthoparmelia specimens from two rock outcrops in Western Italian Alps, representative of nine morphotypes and sixteen rDNA ITS haplotypes...
March 11, 2017: Chemistry & Biodiversity
https://www.readbyqxmd.com/read/28295695/dual-source-precursor-approach-for-highly-efficient-inverted-planar-heterojunction-perovskite-solar-cells
#13
Deying Luo, Lichen Zhao, Jiang Wu, Qin Hu, Yifei Zhang, Zhaojian Xu, Yi Liu, Tanghao Liu, Ke Chen, Wenqiang Yang, Wei Zhang, Rui Zhu, Qihuang Gong
The highest efficiencies reported for perovskite solar cells so far have been obtained mainly with methylammonium and formamidinium mixed cations. Currently, high-quality mixed-cation perovskite thin films are normally made by use of antisolvent protocols. However, the widely used "antisolvent"-assisted fabrication route suffers from challenges such as poor device reproducibility, toxic and hazardous organic solvent, and incompatibility with scalable fabrication process. Here, a simple dual-source precursor approach is developed to fabricate high-quality and mirror-like mixed-cation perovskite thin films without involving additional antisolvent process...
March 15, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28295693/multiple-erosive-lichen-planus-preceded-by-solitary-lichen-planus-after-combination-therapy-with-nivolumab-and-radiation
#14
Takaya Komori, Tetsuya Honda, Hiroyuki Irie, Atsushi Otsuka, Kenji Kabashima
Erosive lichen planus (ELP) is a rare type of LP, which is a T cell-mediated chronic inflammatory disease that develops in the skin and mucosa (1). ELP differs from common solitary LP in that it is accompanied by pain and erosive changes in the lesions (1). Nivolumab is a monoclonal antibody to the immune check point molecule programmed death 1 (PD-1). Nivolumab facilitates T cell activation by cancelling the suppressive effect of PD-1 signaling on T cells, and exerts anti-tumor effects in various cancers (2)...
March 11, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28295632/immunohistochemical-detection-of-mycoplasma-salivarium-in-oral-lichen-planus-tissue
#15
Harumi Mizuki, Ryosuke Abe, Shintaro Kogi, Toshinari Mikami
BACKGROUND: Oral lichen planus (OLP) is a T cell-mediated inflammatory disease; however, its exact etiology is unknown. Hyperkeratosis is often observed in OLP lesions. Previous studies have revealed the localization of Mycoplasma salivarium in the epithelial cells of oral leukoplakia with hyperkeratosis. Herein, we investigated the presence of M. salivarium in OLP tissue by immunohistochemistry to determine the causative factor of OLP. METHODS: Forty-one formalin-fixed, paraffin-embedded samples obtained from 31 patients with OLP were examined...
March 10, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/28293790/deconstructing-the-genitourinary-syndrome-of-menopause
#16
Pedro Vieira-Baptista, Claudia Marchitelli, Hope K Haefner, Gilbert Donders, Faustino Pérez-López
The concept of genitourinary syndrome of menopause (GSM) was recently introduced and has been gaining widespread use. While some justifications for its introduction are straightforward, others may be questionable. Numerous unspecific symptoms and signs were included in the definition of the syndrome, but the minimum number required for diagnosis was not established. While the GSM definition is designed to facilitate identifying vulvovaginal and urinary estrogen-deprivation-associated symptoms and signs, several concerns have evolved: (1) the syndrome may result in the underdiagnosis of vulvar and urinary pathology; and (2) serious conditions (e...
March 14, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28293492/a-rare-case-of-malignant-transformation-of-oral-lichen-planus-of-the-mandible
#17
Joanne Soo, George Kokosis, Michael Ogilvie, Xiaoyin Sara Jiang, David B Powers, Daniel J Rocke, Detlev Erdmann
Oral lichen planus (OLP) is an immune-mediated mucocutaneous disease associated with an increased risk in oral squamous cell carcinoma (OSCC). Nearly all cases of malignant transformation have been reported in patients >40 years old. We report the case of a 37-year-old woman with a 5-year history of erosive OLP who presented with malignant transformation to OSCC. Delineating the margins of the disease was impossible at presentation given her OLP, and she was initially treated with concurrent chemoradiation therapy...
December 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28290203/symbiotic-interplay-of-fungi-algae-and-bacteria-within-the-lung-lichen-i-lobaria-pulmonaria-i-l-hoffm-as-assessed-by-i-state-of-the-art-i-metaproteomics
#18
Christine Eymann, Christian Lassek, Uwe Wegner, Jörg Bernhardt, Ole Arno Fritsch, Stephan Fuchs, Andreas Otto, Dirk Albrecht, Ulf Schiefelbein, Tomislav Cernava, Ines Aschenbrenner, Gabriele Berg, Martin Grube, Katharina Riedel
Lichens are recognized by macroscopic structures formed by a heterotrophic fungus, the mycobiont, which hosts internal autotrophic photosynthetic algal and/or cyanobacterial partners, referred to as the photobiont. We analyzed structure and functionality of the entire lung lichen </i>Lobaria pulmonaria</i> L. Hoffm. collected from two different sites by state-of-the-art metaproteomics. In addition to the green algae and the ascomycetous fungus, a lichenicolous fungus, as well as a complex prokaryotic community (different from the cyanobacteria) was found, the latter dominated by methanotrophic Rhizobiales...
March 14, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28288353/radioactive-contamination-of-the-soil-plant-cover-at-certain-locations-of-primorsky-krai-sakhalin-island-and-kamchatka-peninsula-assessment-of-the-fukushima-fallout
#19
L N Mikhailovskaya, I V Molchanova, V N Pozolotina, Yu N Zhuravlev, Ya O Timofeeva, M L Burdukovsky
The contamination densities of soil-plant cover at certain locations within the Primorsky Krai, Sakhalin Island and Kamchatka Peninsula attributable to (90)Sr, (137)Cs and (239,240)Pu were 500-1390 Bq m(-2), 980-2300 Bq m(-2) and 37-74 Bq m(-2), respectively. These values do not exceed average global background levels, typical for mid-latitudes of the Northern Hemisphere. The spatial distribution of radionuclides depends on the climatic conditions of the region. A positive dependence of the (90)Sr and (137)Cs contamination densities, as well as additional (137)Cs from NPP "Fukushima" in the soil, was determined based on the sum of annual atmospheric precipitation within the study areas...
March 10, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28287142/worldwide-circulation-of-hsv-2%C3%A2-%C3%A3-%C3%A2-hsv-1-recombinant-strains
#20
David M Koelle, Peter Norberg, Matthew P Fitzgibbon, Ronnie M Russell, Alex L Greninger, Meei-Li Huang, Larry Stensland, Lichen Jing, Amalia S Magaret, Kurt Diem, Stacy Selke, Hong Xie, Connie Celum, Jairam R Lingappa, Keith R Jerome, Anna Wald, Christine Johnston
Homo sapiens harbor two distinct, medically significant species of simplexviruses, herpes simplex virus (HSV)-1 and HSV-2, with estimated divergence 6-8 million years ago (MYA). Unexpectedly, we found that circulating HSV-2 strains can contain HSV-1 DNA segments in three distinct genes. Using over 150 genital swabs from North and South America and Africa, we detected recombinants worldwide. Common, widely distributed gene UL39 genotypes are parsimoniously explained by an initial >457 basepair (bp) HSV-1 × HSV-2 crossover followed by back-recombination to HSV-2...
March 13, 2017: Scientific Reports
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