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https://www.readbyqxmd.com/read/28543887/treatment-of-venous-lake-with-multi-wavelength-595-and-1064-nm-lasers-in-asian-fitzpatrick-skin-type-iv-patients
#1
Jing Yang, Xiaohong Guo, Xiaorong Tong, Juan Tao
BACKGROUND: Multi-wavelength lasers are reportedly useful for treating venous lake (VL) in Caucasian patients. However, the same parameters may not be safe for Asian patients with Fitzpatrick skin type (FST) IV. PURPOSE: Report experience with using multi-wavelength laser for VL treatment in Asian patients with FST IV. METHODS: Seventeen episodes of VL in 15 Chinese patients with FST IV were treated. 595-nm pulsed dye (PDL) laser followed by 1,064-nm neodymium-doped yttrium aluminum garnet (Nd:YAG) laser were administered...
May 24, 2017: Photodermatology, Photoimmunology & Photomedicine
https://www.readbyqxmd.com/read/28528603/a-retrospective-study-of-multiple-sequential-light-and-laser-sources-to-activate-aminolevulinic-acid-in-the-treatment-of-acne-vulgaris
#2
Daniel P Friedmann, Mitchel P Goldman, Sabrina G Fabi, Isabella Guiha
Reports of the sequential use of multiple light and laser sources for topical 5-aminolevulinic acid (ALA) activation in photodynamic therapy (PDT) of inflammatory acne vulgaris are lacking. The authors sought to retrospectively compare field-directed ALA-PDT with blue light only, blue light + pulsed dye laser (PDL), blue light + intense pulsed light (IPL), blue light + PDL + IPL, or blue light + red light + PDL + IPL for inflammatory acne of the face or upper trunk. Results showed a trend toward greater patient-reported improvement with comparable tolerability using multiple, sequential light sources in ALA-PDT for acne vulgaris, albeit not statistically significant...
2017: Skinmed
https://www.readbyqxmd.com/read/28521677/molluscum-contagiosum-an-update
#3
Alexander Kc Leung, Benjamin Barankin, Kam Lun Hon
BACKGROUND: Molluscum contagiosum is a viral cutaneous infection in childhood that occurs worldwide. Physicians should familiarize themselves with this common condition. OBJECTIVE: To review in depth the epidemiology, pathophysiology, clinical manifestations, complications and, in particular, treatment of molluscum contagiosum. METHODS: A PubMed search was completed in Clinical Queries using the key term "molluscum contagiosum". Patents were searched using the key term "molluscum contagiosum" from www...
May 17, 2017: Recent Patents on Inflammation & Allergy Drug Discovery
https://www.readbyqxmd.com/read/28507898/optically-and-acoustically-triggerable-sub-micron-phase-change-contrast-agents-for-enhanced-photoacoustic-and-ultrasound-imaging
#4
Shengtao Lin, Anant Shah, Javier Hernández-Gil, Antonio Stanziola, Bethany I Harriss, Terry O Matsunaga, Nicholas Long, Jeffrey Bamber, Meng-Xing Tang
We demonstrate a versatile phase-change sub-micron contrast agent providing three modes of contrast enhancement: 1) photoacoustic imaging contrast, 2) ultrasound contrast with optical activation, and 3) ultrasound contrast with acoustic activation. This agent, which we name 'Cy-droplet', has the following novel features. It comprises a highly volatile perfluorocarbon for easy versatile activation, and a near-infrared optically absorbing dye chosen to absorb light at a wavelength with good tissue penetration...
June 2017: Photoacoustics
https://www.readbyqxmd.com/read/28507428/propranolol-therapy-for-infantile-hemangioma-our-experience
#5
Ling Zhang, Hai-Wei Wu, Weien Yuan, Jia-Wei Zheng
OBJECTIVE: Hemangiomas are the most common benign vascular tumors of infancy. Although most infantile hemangiomas (IHs) have the ability to involute spontaneously after initial proliferation and resolve without consequence, intervention is required in a subset of IHs, which develop complications resulting in ulceration, bleeding, or aesthetic deformity. The primary treatment for this subset of IHs is pharmacological intervention, and propranolol has become the new first-line treatment for complicated hemangiomas...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28494960/laser-activated-polymeric-microcapsules-for-ultrasound-imaging-and-therapy-in%C3%A2-vitro-feasibility
#6
Guillaume Lajoinie, Tom van Rooij, Ilya Skachkov, Emilie Blazejewski, Gert Veldhuis, Nico de Jong, Klazina Kooiman, Michel Versluis
Polymeric microcapsules with a light-absorbing dye incorporated in their shell can generate vapor microbubbles that can be spatiotemporally controlled by pulsed laser irradiation. These contrast agents of 6-8 μm in diameter can circulate through the vasculature, offering possibilities for ultrasound (molecular) imaging and targeted therapies. Here, we study the impact of such vapor bubbles on human endothelial cells in terms of cell poration and cell viability to establish the imaging and therapeutic windows...
May 9, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28494055/modern-management-of-nasal-hemangiomas
#7
Robert G Keller, Shawn Stevens, Marcelo Hochman
Importance: Current treatment approaches for infantile hemangiomas of the nose include observation, pharmacologic agents, surgery, and/or laser therapy. Because of the known functional, social, and cosmetic effect of nasal deformities, obtaining the best possible result is critical. Optimal timing, type, duration, and extent of therapy remain unclear. Observations: Results of a review of 86 patients (64 females and 22 males; mean age, 4.8 months [range, 2 days-23 years]) with infantile hemangiomas of the nose treated from January 1, 1999, to December 31, 2015, and a review of the literature are presented to gain insight into the preferred approach to the treatment of these lesions...
May 11, 2017: JAMA Facial Plastic Surgery
https://www.readbyqxmd.com/read/28464648/laser-driven-resonance-of-dye-doped-oil-coated-microbubbles-a-theoretical-and-numerical-study
#8
Guillaume Lajoinie, Erik Linnartz, Pieter Kruizinga, Nico de Jong, Eleanor Stride, Gijs van Soest, Michel Versluis
Microbubbles are used to enhance the contrast in ultrasound imaging. When coated with an optically absorbing material, these bubbles can also provide contrast in photoacoustic imaging. This multimodal aspect is of pronounced interest to the field of medical imaging. The aim of this paper is to provide a theoretical framework to describe the physical phenomena underlying the photoacoustic response. This article presents a model for a spherical gas microbubble suspended in an aqueous environment and coated with an oil layer containing an optically absorbing dye...
April 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28463255/3d-whispering-gallery-mode-microlasers-by-direct-laser-writing-and-subsequent-soft-nanoimprint-lithography
#9
Philipp Brenner, Ofer Bar-On, Tobias Siegle, Tobias Leonhard, Raz Gvishi, Carsten Eschenbaum, Heinz Kalt, Jacob Scheuer, Uli Lemmer
We demonstrate the realization of 3D whispering-gallery-mode (WGM) microlasers by direct laser writing (DLW) and their replication by nanoimprint lithography using a soft mold technique ("soft NIL"). The combination of DLW as a method for rapid prototyping and soft NIL offers a fast track towards large scale fabrication of 3D passive and active optical components applicable to a wide variety of materials. A performance analysis shows that surface-scattering-limited Q-factors of replicated resonators as high as 1×10<sup>5</sup> at 635 nm can be achieved with this process combination...
May 1, 2017: Applied Optics
https://www.readbyqxmd.com/read/28463045/mitigation-of-epidermal-growth-factor-receptor-inhibitor-induced-side-effects-utilizing-melanin-and-vascular-specific-lasers-a-case-report-series
#10
Karen Y Kuo, Bernice Kwong, Zakia Rahman
The advent of targeted chemotherapy has led to the emergence of new dermatologic toxicities. We sought to use lasers and light devices to treat recalcitrant cutaneous adverse effects related to cancer treatment. Three stage III or IV cancer patients with cutaneous complications due to epidermal growth factor receptor (EGFR) inhibitors were treated with melanin and vascular-specific laser and light technologies. Two patients reported reduction in papulopustular eruption following pulse dye laser (PDL) treatment...
March 2, 2017: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/28447362/randomized-controlled-trial-split-faced-study-of-595-nm-pulsed-dye-laser-in-the-treatment-of-acne-vulgaris-and-acne-erythema-in-adolescents-and-early-adulthood
#11
Ramrada Lekwuttikarn, Therdpong Tempark, Susheera Chatproedprai, Siriwan Wananukul
The high prevalence of acne vulgaris in teenagers has increased comorbidities. Lasers offer alternative options for acne treatment because they have rapid action, low systemic adverse effects, and do not require everyday treatment. To study the efficacy and patients' satisfaction of 595-nm pulse dye laser (PDL) treatment of acne vulgaris and acne erythema in adolescents and early adulthood, we designed a blocked-randomized, split-faced 595-nm PDL (fluence 8 J/cm(3) pulse duration 10 ms, spot size 7 mm, 2 session every 2 weeks) study in patients with mild to moderate acne by comparing the laser-treated and non-treated side...
April 26, 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/28443303/cutaneous-ulceration-and-breast-implant-compromise-after-pulse-dye-laser-for-radiation-induced-telangiectasias
#12
Anthony M Rossi, Kishwer S Nehal, Babak Mehrara, Erica Lee
No abstract text is available yet for this article.
May 2017: JAAD Case Reports
https://www.readbyqxmd.com/read/28425593/medium-sized-nevus-spilus-of-the-neck-treated-with-pulsed-dye-laser
#13
Vito Abrusci, Valentina Benzecry
Patients with large benign melanocytic lesions located on the neck represent a therapeutic challenge since the neck is a high-risk area for hypertrophic scarring and/or retraction. When treating a benign, extensive and visible melanocytic lesion, the choice of therapy mainly depends on the likelihood of improved cosmesis. We report a case of a 33-year-old woman with a medium-sized Nevus Spilus located on the neck, successfully treated with four sessions of pulsed dye laser. We achieved an excellent clinical and cosmetic result in such a challenging area...
April 20, 2017: Dermatologic Therapy
https://www.readbyqxmd.com/read/28413806/ryanodine-and-ip3-receptor-mediated-calcium-signaling-play-a-pivotal-role-in-neurological-infrared-laser-modulation
#14
Gleb P Tolstykh, Cory A Olsovsky, Bennett L Ibey, Hope T Beier
Pulsed infrared (IR) laser energy has been shown to modulate neurological activity through both stimulation and inhibition of action potentials. While the mechanism(s) behind this phenomenon is (are) not completely understood, certain hypotheses suggest that the rise in temperature from IR exposure could activate temperature- or pressure-sensitive ion channels or create pores in the cellular outer membrane, allowing an influx of typically plasma-membrane-impermeant ions. Studies using fluorescent intensity-based calcium ion ([Formula: see text]) sensitive dyes show changes in [Formula: see text] levels after various IR stimulation parameters, which suggests that [Formula: see text] may originate from the external solution...
April 2017: Neurophotonics
https://www.readbyqxmd.com/read/28403266/laser-assisted-photodynamic-therapy-two-novel-protocols-for-enhanced-treatment-results
#15
Mary L Stevenson, Julie K Karen, Elizabeth K Hale
<p>Photodynamic therapy (PDT) uses a topical photosensitizing agent which is activated by a light source to cause destruction of specific cells. Commonly used for the treatment of actinic keratoses and photodamage, PDT can also be used for other conditions including acne and sebaceous hyperplasia. Here we report our experience with two treatment protocols. The first protocol utilizes laser assisted delivery of topical 5-aminolevulinic acid for enhanced efficacy of blue light photodynamic therapy in the treatment of actinic keratoses and photodamage...
April 1, 2017: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/28401413/concentration-dependent-approach-for-accurate-determination-of-two-photon-absorption-cross-section-of-fluorescent-dye-molecule
#16
Sandeep Kumar Maurya, Chayan Dutta, Debabrata Goswami
We have investigated the concentration dependent of two-photon induced fluorescence (TPIF) in methanolic solution of Rhodamine 6G and Rhodamine B dye using 120 fs laser pulses at 780 nm, 76 MHz repetition rate. TPIF study of these dyes was compared with their respective one photon fluorescence intensity. We have shown the effect of chopper on TPIF intensity from Rhodamine dyes, which have shown direct influence on the determined TPA Cross section of these dyes.
April 11, 2017: Journal of Fluorescence
https://www.readbyqxmd.com/read/28388282/combined-pulsed-dye-laser-and-fiberoptic-nd-yag-laser-for-the-treatment-of-hypertrophic-port-wine-stain
#17
Mohammed Radmanesh, Ramin Radmanesh
The hypertrophic port wine stain (PWS) is only partially and superficially treated with the Pulsed dye laser(PDL) because of its limited depth of penetration. We used combined PDL and fiberoptic 1444nm Nd-YAG laser to treat a case with hypertrophic PWS. METHOD: After tumescent anesthesia, few holes were made by a 16 gauge needle on different sides of the lesion. The fiberoptic tip was of 1444nm Nd-YAG laser was inserted within the holes and was pushed forward while triggering. In a fan pattern and by a back and forth movement, the subcutaneous and deep dermal areas were coagulated...
April 7, 2017: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/28375972/striae-distensae-preventative-and-therapeutic-modalities-to-improve-aesthetic-appearance
#18
Nicholas A Ross, Derek Ho, Juliya Fisher, Andrew Mamalis, Edward Heilman, Nazanin Saedi, Jared Jagdeo
BACKGROUND: Striae distensae (SD) are aesthetically troublesome to patients and therapeutically challenging. OBJECTIVE: Herein, the authors comprehensively review the literature pertaining to the history, pathogenesis, clinical presentation, clinical rating scales, and laboratory, imaging, and histologic features of SD. METHODS AND MATERIALS: A review of PubMed, MEDLINE, Scopus, Embase, and Google scholar was conducted, including literature published from 1773 to August 6, 2016...
May 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28374298/peri-procedure-laser-scar-therapy-protocol-a-pilot-survey-of-plastic-surgeons-practices
#19
Michael Mirmanesh, Zachary Borab, Madeleine Gantz, Pirko Maguina
BACKGROUND: Scar management using laser phototherapy continues to evolve as it gains wide acceptance among patients and providers. Despite widespread use of laser therapy, there are no guidelines or consensus published regarding optimal pre- and post-procedure patient management. Our objective is to gain insight into the best laser practices; we decided to poll colleagues nationwide. METHODS: An online survey was distributed to members of the American Society of Plastic Surgeons...
April 3, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28358185/lasers-in-the-treatment-of-acne
#20
Marina Perper, John Tsatalis, Ariel E Eber, Jessica Cervantes, Keyvan Nouri
Acne is a chronic disease of the pilosebaceous units, presenting as inflammatory or noninflammatory lesions, affecting primarily the face but also the back and chest. The mainstay of treatment remains topical retinoids, benzoyl peroxide, azelaic acid, antibiotics, and isotretinoin, many of which result in poor compliance, lack of durable remission, and incur adverse effects. The use of lasers to treat acne is continuously increasing because of their minimal complications, limited number of office-based treatments required, potential benefits of simultaneously treating acne scarring, and the rapid onset of results...
March 28, 2017: Giornale Italiano di Dermatologia e Venereologia: Organo Ufficiale, Società Italiana di Dermatologia e Sifilografia
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