Jacquelyn Dang, Jeave Reserva, Eleanor Tung-Hahn, Brooke Vasicek, Cindy Krol, William Adams, Rebecca Tung, Murad Alam
BACKGROUND: Data on how patients with a history of skin cancer apply sunscreen are lacking. OBJECTIVE: To characterize (1) gender differences in sunscreen application technique (quantity used, anatomic site coverage, and time allocated) and (2) differences in sunscreen application to unaffected skin versus previous skin cancer sites. METHODS: Subjects with a history of skin cancer were asked to apply sunscreen to their head as they normally would...
September 15, 2020: Archives of Dermatological Research
Maximillian A Weigelt, Alexander T Herbst, Antonella Tosti, Hadar Lev-Tov
Introduction: Chemical leukoderma (CL) is an acquired depigmenting disorder caused by repeated exposure to chemical compounds. Thymol is a phenol derivative used as a preservative or antiseptic in many commercially available products. Here, we present the second reported case of CL caused by a thymol-containing compound. Case Presentation: A 48-year-old woman presented with a 4-month history of depigmentation of the nail folds of all ten fingers. This occurred after 1 month of twice-daily application of a thymol-containing compound intended for the removal of gel nails...
July 2020: Skin Appendage Disorders
Tadeu Dos Reis de Oliveira, Victor Paulo Mesquita Aragão, Kanhu Charan Moharana, Eric Fedosejevs, Fernanda Plucani do Amaral, Kariane Rodrigues de Sousa, Jay J Thelen, Thiago Motta Venâncio, Vanildo Silveira, Claudete Santa-Catarina
The light spectrum quality is an important signal for plant growth and development. We evaluated the effects of different light spectra on the in vitro shoot development of Cedrela fissilis and its proteomic and polyamine (PA) profiles. Cotyledonary and apical nodal segments were grown under different light emitting diodes (LED) and fluorescent lamps. Shoots from cotyledonary nodal segments cultured with 6-benzyladenine (BA) that were grown under Wm Bd R LED showed increased length and higher fresh and dry matter compared to shoots grown under fluorescent lamps...
August 24, 2020: Biochimica et Biophysica Acta. Proteins and Proteomics
Jack Ao, Glyn Chidlow, John P M Wood, Robert J Casson
Purpose: Photobiomodulation (PBM) refers to therapeutic irradiation of tissue with low-energy, 630- to 1000-nm wavelength light. An increasing body of evidence supports a beneficial effect of PBM in retinal disorders. To date, most studies have utilized light-emitting diode irradiation sources. Slit-lamp-mounted retinal lasers produce a coherent beam that can be delivered with precisely defined dosages and predetermined target area; however, the use of retinal lasers raises safety concerns that warrant investigation prior to clinical application...
March 2020: Translational Vision Science & Technology
Quan-Sheng Lu, Xi Chen, Shan Wang, Shan-Shan Xu, Tong Wu, Guan Jiang
No abstract text is available yet for this article.
August 13, 2020: Chinese Medical Journal
J P Wood, J Archer, W Calfee, S Serre, L Mickelsen, A Mikelonis, L Oudejans, M Hu, S Hurst, V Rastogi
AIMS: To obtain quantitative efficacy data of two ultraviolet light (UVC) technologies for surface inactivation of Bacillus anthracis Ames and Bacillus atrophaeus spores. METHODS AND RESULTS: Spores were deposited onto test coupons and controls of four different materials, via liquid suspension or aerosol deposition. The test coupons were then exposed to UVC light from either a low-pressure mercury vapor lamp or a system comprised of light emitting diodes, with a range of dosages...
July 21, 2020: Journal of Applied Microbiology
Nianfang Hu, Qin Yi, Wang Xi, Lin Wang
A 65-year-old women presented with sharply demarcated macules and small nodules on her face and neck for 2.5 years. They first appeared on her left face and gradually spread to her whole face and neck. The lesions were slightly pruritic. Her history was remarkable only for a high dose of topical tretinoin cream 0.025% dosage. On the basis of distribution and history, we made the diagnosis of contact dermatitis for the macules. A biopsy of a red papule from her neck revealed characteristics of pyogenic granuloma...
July 4, 2020: Dermatologic Therapy
Kamran Ali, Mahwish Raja
Data sources Experimental investigation.Study design A retrospective review to evaluate the use of a negative-pressure otolaryngology viral isolation drape (NOVID) system to reduce cross-infection through aerosol. The apparatus consists of a plastic drape suspended over the surgical field in the head and neck region with a smoke evacuator suction placed inside the chamber with an ultra-low penetrating air (ULPA) efficiency rating and a fluid suction high-efficiency particulate air (HEPA) filter compartment...
June 2020: Evidence-based Dentistry
Andrew Thirlwell, Ognjen Arandjelović
The aim of the work described in this paper is to detect trees in eye level view images. Unlike previous work that universally considers highly constrained environments, such as natural parks and wooded areas, or simple scenes with little clutter and clear tree separation, our focus is on much more challenging suburban scenes, which are rich in clutter and highly variable in type and appearance (houses, falls, shrubs, cars, bicycles, pedestrians, hydrants, lamp posts, etc.). Thus, we motivate and introduce three different approaches: (i) a conventional computer vision based approach, employing manually engineered steps and making use of explicit human knowledge of the application domain, (ii) a more machine learning oriented approach, which learns from densely extracted local features in the form of scale invariant features (SIFT), and (iii) a machine learning based approach, which employs both colour and appearance models as a means of making the most of available discriminative information...
May 28, 2020: Sensors
Tomotaka Sato, Yasuhiko Asahina, Susumu Toshima, Takashi Yaguchi, Kazuto Yamazaki
Wood's lamp was demonstrated to be useful in three cases of dermatophytoma treated during clinical dermatological practice. Clinical signs of onychomycosis are longitudinal yellow and white striae on the nail plate and are diagnosed by KOH direct microscopic examination. For its treatment, surgical debridement is recommended. Usefulness of the Wood's lamp for diagnosis of tinea capitis caused by Microsporum canis is standard. In the first and second cases, we used Wood's lamp (Woody™) to make a clear margin for debridement of onychomycosis...
2020: Medical Mycology Journal
Lilia Zisova, Valentin Valchev, Georgi Kasabov
BACKGROUND: Erythrasma is a superficial skin infection that presents with red-brown, flaky macules. It is caused by the Gram-positive bacteria Corynebacterium minutissimum. The purpose of our study is to investigate the prevalence and incidence of erythrasma in active sportsmen, i.e., athletes and football players, comparing the results with the incidence of the disease in the general population. METHODS: A total of 140 sportsmen, 110 male athletes and 30 football players, were examined by clinical examination, microscopic examination (Gram staining), and Wood's lamp examination...
May 26, 2020: Wiener Medizinische Wochenschrift
Joel Reis, Glória Cunha Velho
No abstract text is available yet for this article.
May 2020: Journal of Cutaneous Medicine and Surgery
Marina K Ibraheim, Michelle A McNally, Jaime Tschen
Tinea nigra is an uncommon superficial dermatomycosis precipitated by Hortaea werneckii , a halophilic and halothermic yeast-like fungus capable of producing a melanin-like substance. This pathogen infiltrates the stratum corneum in the setting of microtrauma and produces an asymptomatic brown to black macule or patch that appears similarly to melanocytic nevi or melanoma. We present a case of a 52-year-old woman who presented to clinic several months after developing a painless, nonpruritic dark brown patch in her left foot inside the fourth toe web...
April 7, 2020: Curēus
Monica Janeczek, Zachary Kozel, Richa Bhasin, Joy Tao, David Eilers, James Swan
BACKGROUND: Inverse psoriasis is characterized by erythematous nonscaly plaques in intertriginous regions. Similarly, erythrasma, a superficial infection caused by Corynebacterium minutissimum ( C. minutissimum ), is also found in skin folds with red-brown lesions, making the distinction between psoriasis and erythrasma difficult. No studies have previously determined whether these two clinically similar cutaneous disorders can occur concurrently. METHODS: Thirty patients with inverse psoriatic plaques were examined using a standard Wood's lamp to visualize porphyrins associated with C...
March 2020: Journal of Clinical and Aesthetic Dermatology
Miguel Fernando García-Gil, Juan Monte Serrano, Ignacio Ortega Lalmonda
No abstract text is available yet for this article.
March 27, 2020: Atencion Primaria
Enrique Alberdi, Clara Gómez
BACKGROUND: Although systemic therapies are recommended for severe or recalcitrant cases of Pityriasis versicolor (PV), they are not free of important side effects and drug interactions. Photodynamic therapy (PDT) utilizes the action of singlet oxygen and free radicals produced by a light-activated photosensitizer to kill viruses, bacteria or fungi. In this study the effect of a PDT mediated by methylene blue (MB) in PV was evaluated. METHODS: Five women with PV disseminated on the back and diagnosed by fresh microscopic analysis, were treated with a solution of MB (2%) applied to the PV lesions for 3 minutes...
March 19, 2020: Photodermatology, Photoimmunology & Photomedicine
Linda Brindley Thompson
Purpose: This simulation curriculum is structured to teach the use of common eye assessment equipment and corneal foreign removal techniques using harvested cow eye models, the ophthalmologic burr, and the hollow-bore needle. Methods: This curriculum involves using one self-assessment (SA) station and three skills stations. The skill stations teach the use of the iCareTonometer, Woods Lamp, and Slit Lamp, and train corneal foreign body removal using a burr and hollow-bore needle...
2020: Advances in Medical Education and Practice
Matthew Ferry, Lydia Shedlofsky, Andrew Newman, Yebabe Mengesha, Brooke Blumetti
Tinea versicolor (TV), or pityriasis versicolor, is one of the most commonly occurring superficial mycoses. Typically, this condition is characterized by fine scaly hyper or hypopigmented macules and patches distributed on the trunk and upper extremities. Diagnosis is often based on clinical presentation. A Wood's lamp examination or potassium hydroxide (KOH) preparation test is performed for confirmation. To date, numerous morphologic variants of this condition have been described. Here we present an inverse papular variant that, to our knowledge, has only been previously reported once...
January 17, 2020: Curēus
Jowita Samanta Niczyporuk, Wojciech Kozdruń, Hanna Czekaj, Natalia Styś-Fijoł, Karolina Piekarska
BACKGROUND: The present study on the role of strains of adenovirus in wildlife reservoirs, and their prevalence is under exploration. In several previous studies, the presence of adenovirus strains in wild birds has been investigated. Worldwide distribution and outbreaks of adenovirus infections have been reported by many authors. The present study investigated the prevalence of FAdVs in 317 samples of different bird species from the northwestern region of Poland. An applied specific, sensitive, and efficient, without cross-reactivity loop-mediated isothermal amplification (LAMP) method to gauge the prevalence of fowl adenovirus strains in wild birds was developed and used...
February 14, 2020: BMC Veterinary Research
Jeremy G Light, Travis Frantz, Kyle McNamara, Arjun M Bashyam, Steven R Feldman
BACKGROUND: Self-application of topicals on the back can be challenging. OBJECTIVE: The aim was to assess topical back coverage using commercially available back applicators. MATERIALS AND METHODS: Ten subjects applied sunscreen to their back using their hands and then with 3 back applicators (large foam tip, small foam tip, roller tip). The amount of lotion used and the time it took to perform the application were recorded. The resulting distribution of sunscreen was assessed with a Wood's lamp; the area covered fluoresced less than the uncovered skin...
February 13, 2020: Journal of Cutaneous Medicine and Surgery
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