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Light emitting diodes skin

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https://www.readbyqxmd.com/read/28986000/the-effect-of-light-emitting-diode-590-830%C3%A2-nm-based-low-level-laser-therapy-on-posttraumatic-edema-of-facial-bone-fracture-patients
#1
Woo Yeol Baek, Il Hwan Byun, In Sik Yun, Jae Yoon Kim, Tai Suk Roh, Dae Hyun Lew, Young Seok Kim
PURPOSE: Posttraumatic edema in facial bone fracture patients may interfere with the operation field and delay the schedule. Thus, swiftly reducing the edema alleviates patient discomfort and advances the operation date. Ice packing and compression bandages are often used for such a purpose, but such methods are often inconvenient for the face. In this study, we aim to analyze the effect of light-emitting diode (LED) (590/830 nm)-based low-level laser therapy (LLLT) in posttraumatic edema in facial bone fracture patients...
September 2, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28931040/newborn-skin-reflection-proof-of-concept-for-a-new-approach-for-predicting-gestational-age-at-birth-a-cross-sectional-study
#2
Zilma Silveira Nogueira Reis, Gabriela Luiza Nogueira Vitral, Ingrid Michelle Fonseca de Souza, Maria Albertina Santiago Rego, Rodney Nascimento Guimaraes
BACKGROUND: Current methods to assess the gestational age during prenatal care or at birth are a global challenge. Disadvantages, such as low accessibility, high costs, and imprecision of clinical tests and ultrasonography measurements, may compromise health decisions at birth, based on the gestational age. Newborns' organs and tissues can indirectly indicate their physical maturity, and we hypothesized that evolutionary changes in their skin, detected using an optoelectronic device meter, may aid in estimating the gestational age...
2017: PloS One
https://www.readbyqxmd.com/read/28904394/ultraviolet-b-light-emitting-diodes-leds-are-more-efficient-and-effective-in-producing-vitamin-d3-in-human-skin-compared-to-natural-sunlight
#3
T A Kalajian, A Aldoukhi, A J Veronikis, K Persons, M F Holick
Vitamin D, the sunshine vitamin is important for health. Those with fat malabsorption disorders malabsorb vitamin D and thus must rely on cutaneous production of vitamin D3. Vitamin D3 is generated secondary to exposure to ultraviolet B (UVB) radiation (whether from the sun or from an artificial source). Light emitting diodes (LEDs) have been developed to emit ultraviolet radiation. Little is known about the efficiency of UVB emitting LEDs tuned to different wavelengths for producing vitamin D3 in human skin...
September 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28837773/wearable-electrocardiogram-monitor-using-carbon-nanotube-electronics-and-color-tunable-organic-light-emitting-diodes
#4
Ja Hoon Koo, Seongjin Jeong, Hyung Joon Shim, Donghee Son, Jaemin Kim, Dong Chan Kim, Suji Choi, Jong-In Hong, Dae-Hyeong Kim
With the rapid advances in wearable electronics, the research on carbon-based and/or organic materials and devices has become increasingly important, owing to their advantages in terms of cost, weight, and mechanical deformability. Here, we report an effective material and device design for an integrative wearable cardiac monitor based on carbon nanotube (CNT) electronics and voltage-dependent color-tunable organic light-emitting diodes (CTOLEDs). A p-MOS inverter based on four CNT transistors allows high amplification and thereby successful acquisition of the electrocardiogram (ECG) signals...
August 28, 2017: ACS Nano
https://www.readbyqxmd.com/read/28833644/ultrathin-quantum-dot-display-integrated-with-wearable-electronics
#5
Jaemin Kim, Hyung Joon Shim, Jiwoong Yang, Moon Kee Choi, Dong Chan Kim, Junhee Kim, Taeghwan Hyeon, Dae-Hyeong Kim
An ultrathin skin-attachable display is a critical component for an information output port in next-generation wearable electronics. In this regard, quantum dot (QD) light-emitting diodes (QLEDs) offer unique and attractive characteristics for future displays, including high color purity with narrow bandwidths, high electroluminescence (EL) brightness at low operating voltages, and easy processability. Here, ultrathin QLED displays that utilize a passive matrix to address individual pixels are reported. The ultrathin thickness (≈5...
August 21, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28755402/combination-of-a-2940%C3%A2-nm-er-yag-laser-with-recombinant-bovine-basic-fibroblast-growth-factor-rb-bfgf-and-light-emitting-diode-red-light-led-rl-for-the-treatment-of-striae-alba-a-pilot-study
#6
Jie Shen, Xin-Gang Lu, Jing-Jing Jin, Hong-Wei Wang
BACKGROUND: Striae distensae (SD) are a common dermatologic problem that plagues many people. Although there are many therapeutic modalities have been used to treat SD, effective method has been disappointing for striae Alba. AIMS: To evaluate the clinical and histopathologic efficacy and safety of the 2940-nm erbium yttrium aluminum garnet (Er:YAG) ablative fractional laser (AFL) with recombinant bovine basic fibroblast growth factor (rb-bFGF) and light-emitting diode-red light (LED-RL) for the treatment of striae alba...
July 29, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28747723/thermal-management-of-micro-scale-inorganic-light-emittng-diodes-on-an-orthotropic-substrate-for-biointegrated-applications
#7
Yuhang Li, Jin Chen, Yufeng Xing, Jizhou Song
The orthotropic material with the in-plane thermal conductivity much larger than the off-plane one can control the heat flow direction. This feature provides unique benefits in thermal management of micro-scale inorganic light-emitting diodes (μ-ILEDs) device for biointegrated applications by helping the heat dissipation from μ-ILEDs along the in-plane directions to lower the μ-ILED temperature and prevent the heat dissipation to the tissue along the off-plane direction to ensure a low tissue temperature...
July 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28741866/a-review-of-available-laser-and-intense-light-source-home-devices-a-dermatologist-s-perspective
#8
REVIEW
Margit Lw Juhász, Melissa K Levin, Ellen S Marmur
BACKGROUND: Home optical devices are becoming an increasingly popular treatment modality sought out by patients for dermatologic pathologies such as acne, hair removal and anti-aging, as these devices are a low-cost and convenient therapy choice. METHODS: An Internet search using PubMed.gov was completed with search terms, "home device dermatology," "home device acne," "home device hair" or "hair removal," and "home device aging." RESULTS: Currently, there are multiple home optical devices available on the market...
July 25, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28695797/effects-of-630-nm-red-and-460-nm-blue-light-emitting-diode-irradiation-on-healing-of-the-skin-wound-in-japanese-big-ear-white-rabbit
#9
Yanhong Li, Jigang Zhang, Yanfeng Xu, Yunlin Han, Binbin Jiang, Lan Huang, Hua Zhu, Yuhuan Xu, Weiling Yang, Chuan Qin
Objective To observe the effects of 630 nm red light and 460 nm blue light emitting diode irradiation on the healing of skin wounds in Japanese big-ear white rabbits. Methods The skin wound model was established with 8 Japanese big-ear white rabbits. Three parts of vulnus in each rabbit were used:two parts of vulnus were irradiated vertically by red and blue LED light,respectively(15 min/time),and the distance between lights and wounds was 15 cm;the 3(rd) part of the wound was used as a control. On the 21(st) day of the wounds exposure to light,the number of healing wounds and the percentage of healing area were recorded and the treatment effect of these two light sources was compared...
June 20, 2017: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/28628685/a-systematic-review-of-light-emitting-diode-led-phototherapy-for-treatment-of-psoriasis-an-emerging-therapeutic-modality
#10
Derek Ho, Eugene Koo, Andrew Mamalis, Jared Jagdeo
<p>Background: Psoriasis is a chronic, inflammatory skin condition. The economic burden of psoriasis is approximately $35.2 billion in the United States per year, and treatment costs are increasing at a higher rate than general inflation. Light emitting diode (LED) phototherapy may represent a cost-effective, efficacious, safe, and portable treatment modality for psoriasis.</p> <p>Objective: The goal of our manuscript is to review the published literature and provide evidence-based recommendations on LED phototherapy for the treatment of psoriasis...
May 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28621565/light-emitting-diode-at-460%C3%A2-%C3%A2-%C3%A2-20%C3%A2-nm-increases-the-production-of-il-12-and-il-6-in-murine-dendritic-cells
#11
Tamires Marielem Carvalho-Costa, Maria Tays Mendes, Marcos Vinicius da Silva, Virmondes Rodrigues, Giuliana Cristina Marre Bruschi Thedei, Carlo Jose Freire Oliveira, Geraldo Thedei
BACKGROUND DATA: Light emitting diode (LED) therapy has been proposed as an option for the treatment of many skin inflammatory processes. Dendritic cells (DCs) are important cells of skin that participate in the initiation and activation of skin immunity. The modulation of these cells by LED could explain much of its effects. OBJECTIVE: Thus, the aim of this study was to examine the effects of LED at 460 ± 20 nm on cytokine production and the expression of surface markers on DCs...
October 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28612929/flexible-organic-inorganic-hybrid-near-infrared-photoplethysmogram-sensor-for-cardiovascular-monitoring
#12
Huihua Xu, Jing Liu, Jie Zhang, Guodong Zhou, Ningqi Luo, Ni Zhao
Wearable photoplethysmogram (PPG) sensors offer convenient and informative measurements for evaluating daily physiological states of individuals. In this work, epidermal and flexible near-infrared (NIR) PPG sensors integrating a low-power, high-sensitivity organic phototransistor (OPT) with a high-efficiency inorganic light-emitting diode are developed. By exploiting an organic bulk heterojunction active layer and a bilayer gate dielectric design, a low voltage (<3 V) operated OPT with NIR responsivity as high as 3...
June 14, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28561953/binary-synergistic-sensitivity-strengthening-of-bioinspired-hierarchical-architectures-based-on-fragmentized-reduced-graphene-oxide-sponge-and-silver-nanoparticles-for-strain-sensors-and-beyond
#13
Songfang Zhao, Lingzhi Guo, Jinhui Li, Ning Li, Guoping Zhang, Yongju Gao, Jia Li, Duxia Cao, Wei Wang, Yufeng Jin, Rong Sun, Ching-Ping Wong
Recently, stretchable electronics have been highly desirable in the Internet of Things and electronic skins. Herein, an innovative and cost-efficient strategy is demonstrated to fabricate highly sensitive, stretchable, and conductive strain-sensing platforms inspired by the geometries of a spiders slit organ and a lobsters shell. The electrically conductive composites are fabricated via embedding the 3D percolation networks of fragmentized graphene sponges (FGS) in poly(styrene-block-butadiene-block-styrene) (SBS) matrix, followed by an iterative process of silver precursor absorption and reduction...
May 31, 2017: Small
https://www.readbyqxmd.com/read/28469528/the-antinociceptive-effect-of-light-emitting-diode-irradiation-on-incised-wounds-is-correlated-with-changes-in-cyclooxygenase-2-activity-prostaglandin-e2-and-proinflammatory-cytokines
#14
Yuan-Yi Chia, Chien-Cheng Liu, Guan-Ming Feng, Chia-Chih Alex Tseng, Kuo-Chuan Hung, Chih-Chieh Chen, Ping-Heng Tan
Background. Light-emitting diode (LED) phototherapy has been reported to relieve pain and enhance tissue repair through several mechanisms. However, the analgesic effect of LED on incised wounds has never been examined. Objectives. We examined the analgesic effect of LED therapy on incision pain and the changes in cyclooxygenase 2 (COX-2), prostaglandin E2 (PGE2), and the proinflammatory cytokines interleukin 6 (IL-6), IL-1β, and tumor necrosis factor α (TNF-α). Methods. Rats received LED therapy on incised skin 6 days before incision (L-I group) or 6 days after incision (I-L group) or from 3 days before incision to 3 days after incision (L-I-L group)...
2017: Pain Research & Management: the Journal of the Canadian Pain Society
https://www.readbyqxmd.com/read/28445880/heating-of-newborn-infants-due-to-blue-light-emitting-diode-fibreoptic-phototherapy-pads
#15
Pei Ling Ng, Tony Carlisle, Marleesa Ly, Scott Adam Morris
BACKGROUND: Surface temperatures of fibreoptic phototherapy pads using a high intensity blue light-emitting diode (LED) light source have not been studied. OBJECTIVES: The aim of this study was to measure the temperature of LED fibreoptic phototherapy pads during phototherapy in a bench-top study, and to determine temperature effects on babies during phototherapy. METHODS: A commercially available LED fibreoptic phototherapy system was tested...
2017: Neonatology
https://www.readbyqxmd.com/read/28429598/preliminary-clinical-validation-of-a-differential-correction-method-for-improving-measurement-accuracy-in-noninvasive-measurement-of-blood-glucose-using-near-infrared-spectroscopy
#16
Guang Han, Xuyao Yu, Dandan Xia, Rong Liu, Jin Liu, Kexin Xu
One of the main challenges in the noninvasive sensing of blood glucose by near-infrared (NIR) spectroscopy is the background variations from light source drift, sweating, and temperature change at the human-machine interface. In this paper, a differential correction method based on the spectra from the floating-reference position and measuring position is proposed to eliminate these spectral variations from background interferences. Its effectiveness was validated by in vitro and in vivo experiments in which the diffuse reflectance of intralipid solutions and human skin was collected at the source distances of 0...
January 1, 2017: Applied Spectroscopy
https://www.readbyqxmd.com/read/28392643/rosacea-subtypes-visually-and-optically-distinct-when-viewed-with-parallel-polarized-imaging-technique
#17
In Hyuk Kwon, Jae Eun Choi, Soo Hong Seo, Young Chul Kye, Hyo Hyun Ahn
BACKGROUND: Parallel-polarized light (PPL) photography evaluates skin characteristics by analyzing light reflections from the skin surface. OBJECTIVE: The aim of this study was to determine the significance of quantitative analysis of PPL images in rosacea patients, and to provide a new objective evaluation method for use in clinical research and practice. METHODS: A total of 49 rosacea patients were enrolled. PPL images using green and white light emitting diodes (LEDs) were taken of the lesion and an adjacent normal area...
April 2017: Annals of Dermatology
https://www.readbyqxmd.com/read/28365253/semiconductor-diode-laser-device-adjuvanting-intradermal-vaccine
#18
Yoshifumi Kimizuka, John J Callahan, Zilong Huang, Kaitlyn Morse, Wataru Katagiri, Ayako Shigeta, Roderick Bronson, Shu Takeuchi, Yusuke Shimaoka, Megan P K Chan, Yang Zeng, Binghao Li, Huabiao Chen, Rhea Y Y Tan, Conor Dwyer, Tyler Mulley, Pierre Leblanc, Calum Goudie, Jeffrey Gelfand, Kosuke Tsukada, Timothy Brauns, Mark C Poznansky, David Bean, Satoshi Kashiwagi
A brief exposure of skin to a low-power, non-tissue damaging laser light has been demonstrated to augment immune responses to intradermal vaccination. Both preclinical and clinical studies show that this approach is simple, effective, safe and well tolerated compared to standard chemical or biological adjuvants. Until now, these laser exposures have been performed using a diode-pumped solid-state laser (DPSSL) devices, which are expensive and require labor-intensive maintenance and special training. Development of an inexpensive, easy-to-use and small device would form an important step in translating this technology toward clinical application...
April 25, 2017: Vaccine
https://www.readbyqxmd.com/read/28362084/fluorometric-biosniffer-camera-sniff-cam-for-direct-imaging-of-gaseous-ethanol-in-breath-and-transdermal-vapor
#19
Takahiro Arakawa, Toshiyuki Sato, Kenta Iitani, Koji Toma, Kohji Mitsubayashi
Various volatile organic compounds can be found in human transpiration, breath and body odor. In this paper, a novel two-dimensional fluorometric imaging system, known as a "sniffer-cam" for ethanol vapor released from human breath and palm skin was constructed and validated. This imaging system measures ethanol vapor concentrations as intensities of fluorescence through an enzymatic reaction induced by alcohol dehydrogenase (ADH). The imaging system consisted of multiple ultraviolet light emitting diode (UV-LED) excitation sheet, an ADH enzyme immobilized mesh substrate and a high-sensitive CCD camera...
March 31, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28342007/the-effect-of-led-on-blood-microcirculation-during-chronic-wound-healing-in-diabetic-and-non-diabetic-patients-a-prospective-double-blind-randomized-study
#20
RANDOMIZED CONTROLLED TRIAL
Igor Frangez, Ksenija Cankar, Helena Ban Frangez, Dragica Maja Smrke
Chronic wounds, especially in diabetic patients, represent a challenging health issue. Since standard treatment protocols often do not provide satisfactory results, additional treatment methods-like phototherapy using low-level light therapy-are being investigated. The aim of our study was to evaluate the effect of phototherapy with light-emitting diodes on chronic wound treatment in diabetic and non-diabetic patients. Since a sufficient blood supply is mandatory for wound healing, the evaluation of microcirculation in the healthy skin at a wound's edge was the main outcome measure...
May 2017: Lasers in Medical Science
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