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https://www.readbyqxmd.com/read/28107576/non-invasive-anaesthetic-methods-for-dermatological-laser-procedures-a-systematic-review
#1
REVIEW
K Greveling, E P Prens, L Liu, M B A van Doorn
Pain is a common side-effect of dermatological laser procedures. Non-invasive anaesthetic drugs and anaesthetic procedures can be used to provide pain relief and increase patient satisfaction and treatment efficacy. However, it remains unclear which method provides the best pain relief. The objective of this systematic review was therefore to assess the efficacy and safety of non-invasive anaesthetic methods during dermatological laser procedures. A systematic literature search was conducted. Randomized and non-randomized controlled clinical trials (RCTs and CCTs) were included...
January 20, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28106129/retooling-laser-speckle-contrast-analysis-algorithm-to-enhance-non-invasive-high-resolution-laser-speckle-functional-imaging-of-cutaneous-microcirculation
#2
Surya C Gnyawali, Kevin Blum, Durba Pal, Subhadip Ghatak, Savita Khanna, Sashwati Roy, Chandan K Sen
Cutaneous microvasculopathy complicates wound healing. Functional assessment of gated individual dermal microvessels is therefore of outstanding interest. Functional performance of laser speckle contrast imaging (LSCI) systems is compromised by motion artefacts. To address such weakness, post-processing of stacked images is reported. We report the first post-processing of binary raw data from a high-resolution LSCI camera. Sharp images of low-flowing microvessels were enabled by introducing inverse variance in conjunction with speckle contrast in Matlab-based program code...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28103995/-advances-in-the-research-of-prevention-and-treatment-of-postburn-contractures-of-hand
#3
K A Wang, G S Wu, Y Sun, Z F Xia
Scar contracture deformity, which can lead to dysfunction of hand and low quality of life, is one of the common complication after hand burns. The prevention measures of scar contracture after hand burns include large skin grafting, prevention of infection, insistence on wearing pressure gloves, use of silicone sheets, wearing orthosis, accepting proper physical therapy, and early functional exercise. The primary treatments of postburn contractures of the hand are surgery, drugs, laser treatment, and rehabilitation therapy...
January 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28103890/the-association-between-diabetes-and-dermal-microvascular-dysfunction-non-invasively-assessed-by-laser-doppler-with-local-thermal-hyperemia-a-systematic-review-with-meta-analysis
#4
REVIEW
Dagmar Fuchs, Pepijn P Dupon, Laura A Schaap, Richard Draijer
BACKGROUND/INTRODUCTION: Diabetes and cardiovascular disease develop in concert with metabolic abnormalities mirroring and causing changes in the vasculature, particularly the microcirculation. The microcirculation can be affected in different parts of the body of which the skin is the most easily accessible tissue. PURPOSE: The association between diabetes and dermal microvascular dysfunction has been investigated in observational studies. However, the strength of the association is unknown...
January 19, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28101465/nanostructured-lipid-carrier-for-topical-application-of-n-acetyl-glucosamine
#5
Lavin Aliasgharlou, Saeed Ghanbarzadeh, Hamideh Azimi, Mohammad Hossein Zarrintan, Hamed Hamishehkar
: Purpose: Hyperpigmentation occurs when melanin is overproduced in certain spots on the skin and is one of the most challenging skin conditions to treat. Although it is usually harmless, for cosmetic reasons, it is dreadfully bothersome to those who undergo it. It was reported that N-acetyl-glucosamine (NAGA) prevents melanin synthesis and alters the expression of numerous genes related to pigmentation. In spite of these advantages, NAGA cannot be employed in topical formulations due to its extremely polar characteristics...
December 2016: Advanced Pharmaceutical Bulletin
https://www.readbyqxmd.com/read/28101404/model-for-indirect-laser-surgery
#6
Natalia Sapogova, Vladimir Bredikhin, Nikita Bityurin, Vladislav Kamensky, Vjacheslav Zhigarcov, Vladimir Yusupov
We present a theoretical model for laser cutting of biological tissue by a strongly heated fiber tip with a highly absorbing coating. A significant dependence of the cutting speed and cutting depth on the inclination angle of the scalpel to the surface when scattering exceeds absorption in the biological tissue is shown. Experimental evidences of this effect are presented. In the experiment, we used silica fiber with coating made of carbon and silicon organic varnish, the 0.97-µm wavelength laser and porcine skin...
January 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28100598/molecular-and-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry-characterization-of-clinically-significant-melanized-fungi-in-india
#7
Ashutosh Singh, Pradeep Kumar Singh, Anil Kumar, Jagdish Chander, Geetika Khanna, Pradip Roy, Jacques F Meis, Anuradha Chowdhary
Melanized or black fungi are a heterogeneous group of fungi causing cutaneous to systemic diseases with high mortality. These fungi are rarely reported as agent of human infections primarily due to difficulties in their classical identification. In this study we examined using molecular methods and MALDI-TOF MS the diversity of melanized fungi (MF) isolated from patients in 19 medical centers in India. Overall, during a 4-year period, 718 (5.3%) clinical specimens yielded MF. Of these, 72 (10%) isolates had clinical significance and were identified primarily by sequencing the ITS and LSU regions...
January 18, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28098265/depth-selective-photothermal-ir-spectroscopy-of-skin-potential-application-for-non-invasive-glucose-measurement
#8
Otto Hertzberg, Alexander Bauer, Arne Küderle, Miguel A Pleitez, Werner Mäntele
An infrared spectroscopic technique is described that employs a mid-IR broadband (980-1245 cm(-1)) tunable quantum cascade laser (QCL) to produce a pump beam, and a detection method based on photothermal deflection, enhanced by total internal reflection. The IR spectra thus obtained are depth-dependent by modulating the pump beam with different frequencies between 10 Hz and 500 Hz. A model system consisting of glucose and a polymer film is used to demonstrate the depth selectivity of this technique. We also apply this photothermal depth profiling method to record in vivo IR spectra of the human epidermis at different depths...
January 18, 2017: Analyst
https://www.readbyqxmd.com/read/28097306/universal-trichloroacetic-acid-peel-technique-for-light-and-dark-skin
#9
Nabil Fanous, Shadi Zari
Importance: Despite their great potential, medium and deep trichloroacetic acid peels are underused in light-skinned patients and are rarely used in darker-skinned patients because of the widespread fear of pigmentary complications and scarring. This concern has led many physicians to opt for the use of lighter types of peels (glycolic acid peel, Jessner peel, etc) and different lasers and intense light technologies. Trichloroacetic acid peels have been described in numerous publications...
January 12, 2017: JAMA Facial Plastic Surgery
https://www.readbyqxmd.com/read/28095566/prospective-evaluation-of-the-safety-and-efficacy-of-a-1060-nm-large-spot-size-vacuum-assisted-hair-removal-diode-laser-system-in-asian-pacific-fitzpatrick-s-skin-types-iv-v-patients
#10
Sushil T Tahiliani, Harsh S Tahiliani
Laser-based photoepilation of dark skin types demands a delicate combination of appropriate light wavelengths and spot size to achieve optimal epidermal-to-follicular energy absorption ratios. This prospective study assessed the axillary, arm, thigh, and back hair clearing ef cacy of the LightSheer In nity 1060 nm diode laser in 10 Fitzpatrick skin type IV-V patients. Each area was treated up to ve times, at 4-6-week intervals, after which immediate skin responses and adverse events were recorded. Hair count, color and coarseness were assessed before each treatment session, as well as 1, 3, and 6 months following the last session...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095565/successful-treatment-of-rhinophyma-with-fractionated-carbon-dioxide-co2-laser-in-an-african-american-man-case-report-and-review-of-literature-of-fractionated-co2-laser-treatment-of-rhinophyma
#11
Ekaterina Kraeva, Derek Ho, Jared Jagdeo
Rhinophyma, a late complication of rosacea (phymatous subtype), is a chronic, progressive dermatological condition. The classic pre- sentation of rhinophyma is nodular, thickened skin over the distal nose, and is often accompanied by underlying erythema secondary to in ammation. Due to the unpleasant aesthetic and dis guring appearance, rhinophyma may be associated with a signi cant nega- tive psychosocial impact, resulting in decreased patient quality-of-life. Treatment of rhinophyma is challenging as topical and systemic pharmacotherapies have shown limited ef cacy...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095564/successful-treatment-of-traumatic-onychodystrophy-and-associated-pterygium-unguis-with-fractionated-carbon-dioxide-laser-case-report-and-review-of-the-literature
#12
Derek Ho, Andrew Mamalis, Jared Jagdeo
Onychodystrophy is a common, chronic malformation of the nail that is aesthetically displeasing and can signi cantly impact patient quality-of-life. Onychodystrophy can be associated with pterygium unguis that contributes to pain and appears as a V-shaped exten- sion of the proximal nail fold skin. Treatment options are limited, and topical or intralesional corticosteroids have minimal ef cacy and cause signi cant patient discomfort. Surgical revision of onychodystrophy is complex, and symptomatic or aesthetic improvements are difficult to achieve...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095563/defining-the-absorption-spectrum-of-the-skin-after-application-of-a-popular-sunless-tanner-dihydroxyacetone-using-re-ectance-photospectrometry
#13
Michael S Graves, Amanda A Lloyd, E Victor Ross
Dihydroxyacetone (DHA) is a popular ingredient in sunless tanner and lotions. We sought to measure the absorption spectrum of hu- man skin after application of DHA. A male in his 30's applied DHA to one underarm once daily for seven days. Re ectance spectropho- tometry was performed on the treated and untreated side. The area treated with DHA revealed increased absorption in the 400-700 nm range. Compared to normal skin, the absorption spectrum of human skin after application of DHA is altered from 400-700 nm...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095560/q-switched-nd-yag-laser-removal-of-facial-amateur-tattoos-in-patients-with-fitzpatrick-type-vi-case-series
#14
Josef Haik, Rachel Kornhaber, Moti Harats, Hadar Israeli, Arie Orenstein
INTRODUCTION: Q-switched neodymium:YAG (Nd:YAG) lasers are reported to be gold standard for laser tattoo removal. In particular, the Q-switched Nd:YAG laser at 1064 nm is widely recognized for the removal of blue/black amateur tattoos. However, treatment modalities in Fitzpatrick Type VI skin carry a greater risk of complications including alterations in pigmentation compared to fairer skin (Fitzpatrick Type I-IV skin). Therefore, the aim of this case series was to describe with the use of the Q-Switched Nd:YAG laser, the removal of carbon-based amateur tattoos on patients with Fitzpatrick Type VI skin as an effective and safe method...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095557/the-photodynamic-therapy-experience-of-a-high-volume-laser-and-dermatologic-surgery-center
#15
David E Orbuch, Lauren Penn, Bradley S Bloom, Jeremy A Brauer, Daniel B Shin, Joshua Greenbaum, Leonard J Bernstein, Elliot T Weiss, Robert T Anolik, Roy G Geronemus
BACKGROUND: Photodynamic therapy (PDT) is an FDA approved treatment for actinic keratoses (AK's) although multiple off-label indi- cations are reported. Despite frequent use for AK's, no clear consensus exists regarding protocols for overall treatment parameters. METHODS: Retrospective chart review of 1,491 subjects who underwent PDT between 2007 and 2011 at a high volume laser surgery center. Demographic information, clinical history, treatment data, and subsequent diagnosis of skin cancers were recorded...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095556/combination-therapy-for-acne-scarring-personal-experience-and-clinical-suggestions
#16
Lucija Kroepfl, Jason J Emer
Acne is one of the most prevalent skin conditions seen by dermatologists. The cosmetic sequelae of severe acne, including scarring and pigmentation, have a profound psychological impact on those in icted. Topical (eg, retinoids, antibiotics, dapsone, hydroxyacids) and oral treatments (eg, antibiotics and/or spironolactone) are often bene cial to control acne or in the instance of oral isotretinoin use, rid the acne permanently; however, these treatments have very little affect on the ultimate cosmetic outcome of the acne scarring and skin texture that results...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095552/a-prospective-split-face-study-of-the-picosecond-alexandrite-laser-with-specialized-lens-array-for-facial-photoaging-in-chinese
#17
Yiping Ge, Lifang Guo, Qiuju Wu, Mengli Zhang, Rong Zeng, Tong Lin
BACKGROUND: A 755nm picosecond alexandrite laser with a diffractive lens array has been reported for the treatment of acne scar and photoaging with clinical ef cacy. In this study, we evaluated the application of the 755nm picosecond alexandrite laser with a diffractive lens array for facial photoaging in Chinese. MATERIALS AND METHODS: Ten subjects with moderate facial photoaging were enrolled in a prospective, evaluator-blinded, open-label, and split-face trial to assess the ef cacy and safety of the 755nm picosecond alexandrite laser with a diffractive lens array for facial photoaging...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095551/acne-treatment-with-3-step-broadband-light-protocol
#18
Patrick Bitter
BACKGROUND AND OBJECTIVE: A new 3-step protocol using broadband light allows patients with moderate to severe in ammatory acne to avoid potential side effects of systemic acne treatments and the risks and uncertainties associated with laser and light treatments to date. The protocol also addresses acne scarring and, with appropriate modi cations, all skin types. METHODS: The protocol consists of 6 to 8 treatments performed with a single device that allows the user to select wavelength, spot size, uence, and pulse duration...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095550/the-diagnostic-role-of-optical-coherence-tomography-oct-in-measuring-the-depth-of-burn-and-traumatic-scars-for-more-accurate-laser-dosimetry-pilot-study
#19
Jill S Waibel, Ashley C Rudnick, Adam J Wulkan, Jon D Holmes
BACKGROUND: In recent decades, a number of optimal diagnostic technologies have emerged to assist in tissue visualization. Real-time monitoring of skin during laser therapies will help optimize laser parameters for more ef cient therapies. One of these technologies, optimal coherence tomography (OCT), may be used to help visualize burn and traumatic scars. When lasing severe scars, lasers have tunable pulse energies, which are made proportional to the scar thickness as estimated by palpation and the physician eye...
November 1, 2016: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28095549/treatment-of-facial-photodamage-with-mass-market-topical-products-vs-non-ablative-fractional-laser
#20
Hilary Reich, Irmina Wallander, Lacie Schulte, Molly Goodier, Brian Zelickson
METHODS: In this split-face, evaluator-blinded study, 18 subjects were randomly assigned to receive either the SSR or NFL treatments on each side of the face. For the SSR facial sides subjects followed two morning-evening regimens. On the NFL sides subjects were treated 3 times with the 1927-nm laser at 4-week intervals. Three physician evaluators were asked to rate hyperpigmentation, global photoaging, and ne lines and wrinkles for each side of the face at baseline and at 3 months using a 5-point scale...
November 1, 2016: Journal of Drugs in Dermatology: JDD
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