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https://www.readbyqxmd.com/read/29344321/fixed-drug-eruption-to-supplement-containing-ginkgo-biloba-and-vinpocetine-a-case-report-and-review-of-related-cutaneous-side-effects
#1
Philip R Cohen
BACKGROUND: Fixed drug eruption is a cutaneous reaction to a systemic agent that typically presents as an annular or oval erythematous patch or blister and subsequently resolves with postinflammatory hyperpigmentation at the site. Ginkgo biloba leaf extract and vinpocetine are nutritional supplements used to enhance memory in patients with dementia and age-related memory impairment conditions such as Alzheimer's disease. PURPOSE: To describe a fixed drug eruption in a man who repeatedly developed pruritus and macular erythema on his distal penile shaft after ingesting a natural product containing Ginkgo biloba and vinpocetine...
October 2017: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/29343644/identification-of-genes-required-for-mycobacterium-abscessus-growth-in-vivo-with-a-prominent-role-of-the-esx-4-locus
#2
Laura Laencina, Violaine Dubois, Vincent Le Moigne, Albertus Viljoen, Laleh Majlessi, Justin Pritchard, Audrey Bernut, Laura Piel, Anne-Laure Roux, Jean-Louis Gaillard, Bérengère Lombard, Damarys Loew, Eric J Rubin, Roland Brosch, Laurent Kremer, Jean-Louis Herrmann, Fabienne Girard-Misguich
Mycobacterium abscessus, a rapidly growing mycobacterium (RGM) and an opportunistic human pathogen, is responsible for a wide spectrum of clinical manifestations ranging from pulmonary to skin and soft tissue infections. This intracellular organism can resist the bactericidal defense mechanisms of amoebae and macrophages, an ability that has not been observed in other RGM. M. abscessus can up-regulate several virulence factors during transient infection of amoebae, thereby becoming more virulent in subsequent respiratory infections in mice...
January 17, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29341950/clinical-characteristics-of-ulceroglandular-tularemia-in-two-bulgarian-regions-2014-2015-a-report-of-five-cases
#3
Liliya M Pekova, Magdalena P Baymakova, Pavlina O Parousheva, Mariya D Fartunova, Nikolay E Dimitrov, Iskra A Tomova
We present here the first five human cases with tularemia from two regions in South Bulgaria in which there had been no previous report of the infection. The cases occurred over a period of 8 months (December 2014 - August 2015). They were treated at the Department of Infectious Diseases in Stara Zagora University Hospital, Bulgaria. We present the clinical, epidemiological and laboratory data for four men and one woman (age range 52 to 73 years). Three men were hunters, four patients took part in handling, preparing/skinning and cooking the game animals...
December 20, 2017: Folia Medica
https://www.readbyqxmd.com/read/29337699/associations-between-nurse-guided-variables-and-plasma-oxytocin-trajectories-in-premature-infants-during-initial-hospitalization
#4
Ashley Weber, Tondi M Harrison, Loraine Sinnott, Abigail Shoben, Deborah Steward
BACKGROUND: Oxytocin (OT) is a social hormone that may help researchers understand how nurse-guided interventions during initial infant hospitalization, such as supporting human milk expression, promoting comforting touch, and reducing exposure to stressors, affect preterm brain development. PURPOSE: To determine whether factors related to human milk, touch, or stressor exposure are related to plasma OT trajectories in premature infants. METHODS: Plasma from 33 premature infants, born gestational ages 25 to 28 6/7 weeks, was collected at 14 days of life and then weekly until 34 weeks' corrected gestational age (CGA)...
January 15, 2018: Advances in Neonatal Care: Official Journal of the National Association of Neonatal Nurses
https://www.readbyqxmd.com/read/29336486/preventing-posttraumatic-stress-disorder-following-childbirth-and-traumatic-birth-experiences-a-systematic-review
#5
Lisanne F de Graaff, Adriaan Honig, Mariëlle G van Pampus, Claire A I Stramrood
INTRODUCTION: Between 9 and 44% of women experience giving birth as traumatic, and 3% of women develop a posttraumatic stress disorder following childbirth. Knowledge on risk factors is abundant, but studies on treatment are limited. This study aimed to present an overview of means to prevent traumatic birth experiences and childbirth-related posttraumatic stress disorder. MATERIAL AND METHODS: Major databases (Cochrane; Embase; PsycINFO; PubMed (Medline)) were searched using combinations of the key words and their synonyms...
January 16, 2018: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/29336303/keratinocytes-mediate-innocuous-and-noxious-touch-via-atp-p2x4-signaling
#6
Francie Moehring, Ashley M Cowie, Anthony D Menzel, Andy D Weyer, Michael Grzybowski, Thiago Arzua, Aron M Geurts, Oleg Palygin, Cheryl L Stucky
The first point of our body's contact with tactile stimuli (innocuous and noxious) is the epidermis, the outermost layer of skin that is largely composed of keratinocytes. Here, we sought to define the role that keratinocytes play in touch sensation in vivo and ex vivo. We show that optogenetic inhibition of keratinocytes decreases behavioral and cellular mechanosensitivity. These processes are inherently mediated by ATP signaling, as demonstrated by complementary cutaneous ATP release and degradation experiments...
January 16, 2018: ELife
https://www.readbyqxmd.com/read/29334937/perspectives-on-setting-limits-for-rf-contact-currents-a-commentary
#7
REVIEW
Richard A Tell, Christopher A Tell
BACKGROUND: Limits for exposure to radiofrequency (RF) contact currents are specified in the two dominant RF safety standards and guidelines developed by the Institute of Electrical and Electronics Engineers (IEEE) and the International Commission on Non-Ionizing Radiation Protection (ICNIRP). These limits are intended to prevent RF burns when contacting RF energized objects caused by high local tissue current densities. We explain what contact currents are and review some history of the relevant limits with an emphasis on so-called "touch" contacts, i...
January 15, 2018: Biomedical Engineering Online
https://www.readbyqxmd.com/read/29334799/potential-of-epr-spin-trapping-to-investigate-in-situ-free-radicals-generation-from-skin-allergens-in-reconstructed-human-epidermis-cumene-hydroperoxide-as-proof-of-concept
#8
Salen Kuresepi, Bertrand Vileno, Philippe Turek, Jean-Pierre Lepoittevin, Elena Giménez-Arnau
The first step in the development of skin sensitisation to a chemical, and in the elicitation of further allergic contact dermatitis (ACD), is the binding of the allergen to skin proteins after penetrating into the epidermis. The so-formed antigenic adduct is then recognised by the immune system as foreign to the body. Sensitising organic hydroperoxides derived from autoxidation of natural terpenes are believed to form antigens through radical-mediated mechanisms, although this has not yet been established...
January 15, 2018: Free Radical Research
https://www.readbyqxmd.com/read/29334019/chemical-stabilization-of-polymers-implications-for-dermal-exposure-to-additives
#9
N Bartsch, M Girard, L Schneider, V Van De Weijgert, A Wilde, O Kappenstein, B Vieth, C Hutzler, A Luch
Technical benefits of additives in polymers stand in marked contrast to their associated health risks. Here, a multi-analyte method based on gas chromatography coupled to tandem mass spectrometry (GC-MS/MS) was developed to quantify polymer additives in complex matrices such as low-density polyethylene (LDPE) and isolated human skin layers after dermal exposure ex vivo. That way both technical aspects and dermal exposure were investigated. The effects of polymer additivation on the material were studied using the example of LDPE...
January 15, 2018: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
https://www.readbyqxmd.com/read/29330962/skin-conformal-polymer-electrodes-for-clinical-ecg-and-eeg-recordings
#10
Flurin Stauffer, Moritz Thielen, Christina Sauter, Séverine Chardonnens, Simon Bachmann, Klas Tybrandt, Christian Peters, Christofer Hierold, Janos Vörös
Preparation-free and skin compliant biopotential electrodes with high recording quality enable wearables for future healthcare and the Internet of Humans. Here, super-soft and self-adhesive electrodes are presented for use on dry and hairy skin without skin preparation or attachment pressure. The electrodes show a skin-contact impedance of 50 kΩ cm2 at 10 Hz that is comparable to clinical standard gel electrodes and lower than existing dry electrodes. Microstructured electrodes inspired by grasshopper feet adhere repeatedly to the skin with a force of up to 0...
January 13, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29328106/polymer-thermal-optical-switch-for-a-flexible-photonic-circuit
#11
Yue Sun, Yue Cao, Qi Wang, Yunji Yi, Xiaoqiang Sun, Yuanda Wu, Fei Wang, Daming Zhang
Flexible and wearable optoelectronic devices are the new trend for an active lifestyle. These devices are polymer-based for flexibility. We demonstrated flexible polymer waveguide optical switches for a flexible photonic integrated circuit. The optical switches are composed of a single-mode inverted waveguide with dimensions of 5 μm waveguide width, 3 μm ridge height, and 3 μm slab height. A Mach-Zehnder structure was used in the device, with the Y-branch horizontal length of 0.1 cm, the distance between two heating branches of 30 μm, and the heating branch length of 1 cm...
January 1, 2018: Applied Optics
https://www.readbyqxmd.com/read/29324427/lemons-in-the-arizona-sunshine-the-effects-of-furocoumarins-leading-to-phytophotodermatitis-and-burn-like-injuries
#12
Marc R Matthews, Joel C VanderVelde, Daniel M Caruso, Kevin N Foster
INTRODUCTION: Phytophototoxic dermatitis is a strong phototoxic reaction to ultraviolet A (UV-A) radiation exposure after cutaneous contact with citrus fruit containing furocoumarins, leading to skin injury. At the Arizona Burn Center (Phoenix, AZ), the majority of these injuries are managed in the outpatient setting. CASE REPORT: The authors present a pediatric admission for burn-like injuries following prolonged cutaneous exposure to lemons while playing in the Arizona sunshine...
December 2017: Wounds: a Compendium of Clinical Research and Practice
https://www.readbyqxmd.com/read/29322633/preclinical-evaluation-of-melanocyte-transplantation-by-chitosan-based-melanocyte-spheroid-patch-to-skin-prepared-by-controlled-sunburn-blistering
#13
Sabrina Mai-Yi Fan, Po-Hua Chen, Yu-Ting Tseng, Jin-Bon Hong, Wannhsin Chen, Tsen-Fang Tsai, Sung-Jan Lin
Transplantation of autologous cultured melanocytes as cell suspension has been used for the treatment of vitiligo. The recipient site is often prepared by laser-mediated dermabrasion. Such procedures encounter disadvantages including prolonged transplantation duration, unsecured cell adherence to lesional skin and potential scarring. To improve this, here we propose a method by preparing recipient sites before transplantation by psoralen and ultraviolet A (PUVA)-induced sunburn followed by transplanting cells with a chitosan-based melanocyte spheroid patch...
January 10, 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29322530/chromium-iii-release-from-chromium-tanned-leather-elicits-allergic-contact-dermatitis-a-use-test-study
#14
Yolanda S Hedberg, Behnaz Erfani, Mihály Matura, Carola Lidén
BACKGROUND: Chromium (Cr) is a common skin sensitizer. The use of Cr(VI) in leather is restricted in the EU, but that of Cr(III) is not. OBJECTIVES: To assess whether prolonged exposure to Cr-tanned leather with mainly Cr(III) release may elicit allergic contact dermatitis in Cr-allergic individuals. METHOD: Ten Cr-allergic subjects and 22 controls were patch tested with serial dilutions of Cr(III) and Cr(VI), and with leather samples. They then conducted a use test with a Cr-tanned and a Cr-free leather bracelet over a period of 3 weeks, for 12 h per day...
January 11, 2018: Contact Dermatitis
https://www.readbyqxmd.com/read/29320650/cowpox-virus-infection
#15
Ewa Talarek, Magdalena Marczynska
An 11-year-old girl presented to the hospital with a skin lesion on her left cheek that had been present for 3 weeks. She lived in a suburban area in Poland and had direct contact with cats that lived in her home and roamed freely; no bites or scratches were reported. Her parents reported that..
January 11, 2018: New England Journal of Medicine
https://www.readbyqxmd.com/read/29320595/safety-and-efficacy-of-a-non-invasive-1060-nm-diode-laser-for-fat-reduction-of-the-abdomen
#16
Lawrence S Bass, Sean T Doherty
BACKGROUND: Changes in temperature are known to produce apoptosis in adipocytes. This study examines the use of a non-invasive treatment that applies 1060 nm laser energy transcutaneously to hyperthermically induce disruption of fat cells in the abdomen. METHODS: Thirty-five subjects received application of 1060 nm laser on the abdomen for fat reduction. Ultrasound images and high-resolution two-dimensional photography were recorded at baseline, 6 weeks, and 12 weeks post treatment...
January 1, 2018: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29318580/clinico-etiologic-profile-of-hand-dermatitis-and-patch-response-of-patients-at-a-tertiary-hospital-in-lagos-nigeria-results-of-a-prospective-observational-study
#17
Erere Otrofanowei, Olusola O Ayanlowo, Ayesha Akinkugbe, Felix A Oresanya
BACKGROUND: Hand dermatitis is an acute or chronic inflammation of the skin of the hands from a multifactorial cause which may be endogenous, exogenous, or a combination of both. With a wide range in severity and recurrent periods of flares, it has significant impact on the quality of life of its sufferers. A history of atopy predisposes patients to hand dermatitis, but contact dermatitis, either allergic or irritant, is the more commonly implicated factor in the etiology of hand dermatitis...
January 10, 2018: International Journal of Dermatology
https://www.readbyqxmd.com/read/29318391/sarcoptes-scabiei-on-hedgehogs-in-new-zealand
#18
Caroline Kriechbaum, William Pomroy, Kristene Gedye
European hedgehogs (Erinaceus europaeus) were introduced into New Zealand from Britain during the period from 1869 to the early 1900s. The only mite found on New Zealand hedgehogs in early studies was Caparinia tripilis, with Sarcoptes scabiei first being reported in 1996. The aim of this study was to investigate the prevalence of Sarcoptes infestation on hedgehogs in New Zealand, the number of mites found and the degree of mange observed. Dead hedgehogs were collected from veterinary clinics, rescue centres, members of the public and from road-kill...
January 9, 2018: Parasitology Research
https://www.readbyqxmd.com/read/29316829/effects-of-carbomer-940-hydrogel-on-burn-wounds-an-in-vitro-and-in-vivo-study
#19
Farzad Hayati, Seyed Mehdi Ghamsari, Mohammad Mehdi Dehghan, Ahmad Oryan
PURPOSE: This study was designed to investigate the applicability of carbomer 940 hydrogel on skin-burn wounds by focusing on its effects on the zone of stasis. METHOD: Fibroblast cells were used to assess the cytotoxicity of carbomer 940. Wound healing was monitored by laser Doppler flowmetry and histopathological analysis. Twenty adult male Wistar rats were randomly divided into two groups (N = 10 each). After shaving their dorsum, a "burn comb" was contacted bilaterally on each side of the spine...
January 10, 2018: Journal of Dermatological Treatment
https://www.readbyqxmd.com/read/29315532/treatment-of-mcpt8dtr-mice-with-high-or-low-dose-diphtheria-toxin-leads-to-differential-depletion-of-basophils-and-granulocyte-macrophage-progenitors
#20
Carole El Hachem, Pierre Hener, Peggy Kirstetter, Jiagui Li, Susan Chan, Mei Li
Basophils have been recently recognized to play important roles in type 2 immune responses during allergies and parasitic infection, largely due to the development of novel tools for the in vivo study of these cells. As such, the genetically-engineered MCPT8DTR mouse line has been used to specifically deplete basophils following treatment with diphtheria toxin (DT). In this study, we showed that DT-injected MCPT8DTR mice exhibited a striking decrease of eosinophils and neutrophils in skin when subjected to a hapten fluorescein isothiocyanate (FITC)-induced allergic contact dermatitis (ACD) experimental protocol...
January 8, 2018: European Journal of Immunology
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