keyword
MENU ▼
Read by QxMD icon Read
search

Dye laser

keyword
https://www.readbyqxmd.com/read/28640760/successful-treatment-of-angiolymphoid-hyperplasia-with-eosinophilia-with-arterial-ligation-and-pulsed-dye-laser
#1
Nicole Warner, James G Marks, Todd V Cartee
No abstract text is available yet for this article.
July 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28621306/targeted-two-photon-chemical-apoptotic-ablation-of-defined-cell-types-in-vivo
#2
Robert A Hill, Eyiyemisi C Damisah, Fuyi Chen, Alex C Kwan, Jaime Grutzendler
A major bottleneck limiting understanding of mechanisms and consequences of cell death in complex organisms is the inability to induce and visualize this process with spatial and temporal precision in living animals. Here we report a technique termed two-photon chemical apoptotic targeted ablation (2Phatal) that uses focal illumination with a femtosecond-pulsed laser to bleach a nucleic acid-binding dye causing dose-dependent apoptosis of individual cells without collateral damage. Using 2Phatal, we achieve precise ablation of distinct populations of neurons, glia and pericytes in the mouse brain and in zebrafish...
June 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/28618525/influence-of-liquid-crystalline-phases-on-the-tunability-of-a-random-laser
#3
José Trull, Josep Salud, Sergio Diez-Berart, David O López
In this paper, we report the temperature behavior of an optimized disordered photonic system-based liquid crystal by means of heat capacity and refractive index measurements. The scattering system is formed by a porous borosilicate glass random matrix (about 60%) infiltrated with a smectogenic liquid crystal (about 16%) and a small amount of laser dye (0.1%). The rest of the scattering system is about 24% air, giving rise to a high refractive index contrast scattering system. Such a system has the functionality to change the refractive index contrast with temperature due to the liquid crystal temperature behavior...
May 2017: Physical Review. E
https://www.readbyqxmd.com/read/28616398/new-photodynamic-therapy-with-next-generation-photosensitizers
#4
REVIEW
Hiromi Kataoka, Hirotada Nishie, Noriyuki Hayashi, Mamoru Tanaka, Akihiro Nomoto, Shigenobu Yano, Takashi Joh
Photodynamic therapy (PDT) is a non-invasive antitumor treatment that uses the combination of a photosensitizer, tissue oxygen, and visible light irradiation to produce cytotoxic reactive oxygen species, predominantly singlet oxygen. Currently, first-generation PDT using porfimer sodium with an excimer dye laser, and second-generation PDT using talaporfin sodium PDT with a semiconductor laser are approved by health insurance for use in Japan. However, the cancer cell specificity and selectivity of these treatments are inadequate...
April 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28612034/effects-of-laser-polarization-on-responses-of-the-fluorescent-ca-2-indicator-x-rhod-1-in-neurons-and-myelin
#5
Ileana Micu, Craig Brideau, Li Lu, Peter K Stys
Laser-scanning optical microscopes generally do not control the polarization of the exciting laser field. We show that laser polarization and imaging mode (confocal versus two photon) exert a profound influence on the ability to detect [Formula: see text] changes in both cultured neurons and living myelin. With two-photon excitation, increasing ellipticity resulted in a [Formula: see text] reduction in resting X-Rhod-1 fluorescence in homogeneous bulk solution, cell cytoplasm, and myelin. In contrast, varying the angle of a linearly polarized laser field only had appreciable effects on dyes that partitioned into myelin in an ordered manner...
April 2017: Neurophotonics
https://www.readbyqxmd.com/read/28599342/acrinol-a-dye-with-potential-for-nuclear-staining-in-confocal-laser-endomicroscopy
#6
Youichi Kumagai, Kaiyo Takubo, Hideyuki Ishida
Confocal laser endomicroscopy (CLE)(1)) and endocytoscopy system (ECS)(2)) have made optical biopsy in the digestive tract a reality. However, for omission of biopsy histology, visualization of nuclei is essential. In ECS, nuclei can be observed after vital staining with methylene blue, toluidine blue etc.(3)) , and vital staining in CLE requires venous injection or spraying of fluorescein into the gastrointestinal lumen(4)) . However, fluorescein does not stain nuclei. Acriflavin, a topical antiseptic drug, can stain nuclei for CLE observation(5)) , but it has not been widely used because of associated adverse events...
June 9, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28598555/experimental-and-numerical-investigation-on-the-transient-vascular-thermal-response-to-multi-pulse-nd-yag-laser
#7
Dong Li, Ruohui Li, Hao Jia, Bin Chen, Wenjuan Wu, Zhaoxia Ying
BACKGROUND AND OBJECTIVE: Port wine stains (PWS) are congenital vascular malformations that progressively darken and thicken with age. Laser therapy is currently the most effective way in clinical practice for PWS. A 1,064 nm Nd:YAG laser in the near-infrared band can achieve a deeper treatment depth compared to the current widely adopted pulsed dye laser. However, because of its relatively weak absorption by blood, single-pulse Nd:YAG laser requires high energy density to cause effective vessel damage, but may inflict undesirable burning to surrounding collagen...
June 9, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28598436/11-efficiency-solid-state-dye-sensitized-solar-cells-with-copper-ii-i-hole-transport-materials
#8
Yiming Cao, Yasemin Saygili, Amita Ummadisingu, Joël Teuscher, Jingshan Luo, Norman Pellet, Fabrizio Giordano, Shaik Mohammed Zakeeruddin, Jacques-E Moser, Marina Freitag, Anders Hagfeldt, Michael Grätzel
Solid-state dye-sensitized solar cells currently suffer from issues such as inadequate nanopore filling, low conductivity and crystallization of hole-transport materials infiltrated in the mesoscopic TiO2 scaffolds, leading to low performances. Here we report a record 11% stable solid-state dye-sensitized solar cell under standard air mass 1.5 global using a hole-transport material composed of a blend of [Cu (4,4',6,6'-tetramethyl-2,2'-bipyridine)2](bis(trifluoromethylsulfonyl)imide)2 and [Cu (4,4',6,6'-tetramethyl-2,2'-bipyridine)2](bis(trifluoromethylsulfonyl)imide)...
June 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28582716/combination-of-active-targeting-enzyme-triggered-release-and-fluorescent-dye-into-gold-nanoclusters-for-endomicroscopy-guided-photothermal-photodynamic-therapy-to-pancreatic-ductal-adenocarcinoma
#9
Hui Li, Ping Wang, Yunxiang Deng, Meiying Zeng, Yan Tang, Wei-Hong Zhu, Yingsheng Cheng
Pancreatic ductal adenocarcinoma (PDAC) is one of the most devastating malignancies in patients, and there is an urgent need for an effective treatment method. Herein, we report a novel gold nanocluster-based platform for confocal laser endomicroscopy-guided photothermal therapy (PTT)/photodynamic therapy (PDT) for PDAC, which consists of four components: the PTT-carrier gold nanocluster, an active targeting ligand U11 peptide, a Cathepsin E (CTSE)-sensitive PDT therapy prodrug, and a CTSE-sensitive imaging agent (cyanine dye Cy5...
September 2017: Biomaterials
https://www.readbyqxmd.com/read/28577765/the-role-of-adjunct-imaging-in-endoscopic-detection-of-dysplasia-in-barrett-s-esophagus
#10
REVIEW
Pujan Kandel, Michael B Wallace
Advances in imaging technologies have demonstrated promise in early detection of dysplasia and cancer in Barrett's esophagus (BE). Optical chromoendoscopy, dye-based chromoendoscopy, and novel technologies have provided the opportunity to visualize the cellular and subcellular structures. Only narrow-band imaging and acetic acid chromoendoscopy have reached benchmarks for clinical use. Volumetric laser endomicroscopy and molecular imaging are not established for routine use. Best practice in management of BE should be focused on careful endoscopic examination, resection, or ablation of the entire abnormal lesion, as well as the use of available imaging technique that has good diagnostic accuracy...
July 2017: Gastrointestinal Endoscopy Clinics of North America
https://www.readbyqxmd.com/read/28577186/multiple-laser-pulses-in-conjunction-with-an-optical-clearing-agent-to-improve-the-curative-effect-of-cutaneous-vascular-lesions
#11
Jun Ma, Bin Chen, Yue Zhang, Dong Li, Zhuang Lin Xing
Port-wine stains (PWSs) usually respond poorly to pulsed dye laser treatment because of the shallow penetration and light absorption of melanin in the epidermis. Multiple laser pulses (MLPs) Nd:YAG laser in conjunction with an optical clearing agent can help to reduce the total laser energy required for blood coagulation. The quantitative optical clearing effect (OCE) of glycerol was investigated by using a tissue-like phantom. Thereafter, an in vitro capillary tube experimental system and an in vivo hamster dorsal skin chamber experiment for the laser treatment of PWSs were established to visually obtain the quantitative relationship between the OCE and the blood coagulation properties under the irradiation of 1064 nm MLPs...
June 3, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28577095/initial-stages-of-angiogenesis-after-acute-experimental-local-venous-outflow-disturbances-and-application-of-cell-technologies
#12
I V Maiborodin, V V Morozov, V A Matveeva, A A Anikeev, R V Maslov, G A Chastikin, N F Figurenko
The initial stages of angiogenesis in rats after transcutaneous injection of autologous bone marrow multipotent mesenchymal stromal cells transfected with GFP gene and stained cell membranes in the projection of ligated femoral vein were studied by fluorescent light and confocal laser microscopy. Large clusters of brightly fluorescing elongated fibroblast-like cells were seen in the paravasal tissue and in the postoperative scar and signs of angiogenesis were noted as soon as in 4 days. The injected cells not only formed new vessels, but also integrated into vessels formed by host cells...
June 3, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28566911/intense-pulsed-light-and-q-switched-1-064-nm-neodymium-doped-yttrium-aluminum-garnet-laser-treatment-for-the-scarring-lesion-of-discoid-lupus-erythematosus
#13
Yun Sun Byun, Jee Hee Son, Yong Se Cho, Bo Young Chung, Hee Jin Cho, Chun Wook Park, Hye One Kim
Discoid lupus erythematosus (DLE) is a chronic form of cutaneous lupus that can cause permanent scarring. Treatment of DLE includes protection from sunlight and artificial sources of ultraviolet light, as well as systemic and topical medications. The first-line standard therapies are antimalarials and topical steroids. Other systemic therapies include systemic steroid, azathioprine, dapsone, and immunosuppressive agents. Topical tacrolimus and pimecrolimus have also been evaluated. Recent studies reported that several treatments, including pulsed dye laser, CO2 laser, intense pulsed light (IPL), and 1,064-nm long-pulse neodymium-doped yttrium aluminum (Nd:YAG) have been used for the cosmetic treatment of DLE...
June 2017: Annals of Dermatology
https://www.readbyqxmd.com/read/28557805/cancer-cell-death-pathways-caused-by-photothermal-and-photodynamic-effects-through-gold-nanoring-induced-surface-plasmon-resonance
#14
Yulu He, Jen-Hung Hsiao, Jian-He Yu, Po-Hao Tseng, Wei-Hsiang Hua, Meng-Chun Low, Yu-Hsuan Tsai, Cheng-Jin Cai, Cheng-Che Hsieh, Yean-Woei Kiang, C C Yang, Zhenxi Zhang
The different death pathways of cancer cells under the conditions of the photothermal (PT), effect, photodynamic (PD) effect, and their combination are evaluated. By incubating cells with Au nanoring (NRI) either linked with the photosensitizer, AlPcS, or not, the illumination of a visible continuous laser for exciting the photosensitizer or an infrared femtosecond laser for exciting the localized surface plasmon resonance of Au NRI, leads to various PT and PD conditions for study. Three different staining dyes are used for identifying the cell areas of different damage conditions at different temporal points of observation...
July 7, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28551576/light-triggered-release-from-dye-loaded-fluorescent-lipid-nanocarriers-in-vitro-and-in-vivo
#15
Redouane Bouchaala, Nicolas Anton, Halina Anton, Thierry Vandamme, Julien Vermot, Djabi Smail, Yves Mély, Andrey S Klymchenko
Light is an attractive trigger for release of active molecules from nanocarriers in biological systems. Here, we describe a phenomenon of light-induced release of a fluorescent dye from lipid nano-droplets under visible light conditions. Using auto-emulsification process we prepared nanoemulsion droplets of 32nm size encapsulating the hydrophobic analogue of Nile Red, NR668. While these nano-droplets cannot spontaneously enter the cells on the time scale of hours, after illumination for 30s under the microscope at the wavelength of NR668 absorption (535nm), the dye showed fast accumulation inside the cells...
May 15, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28550338/a-comparative-study-of-modified-transcanalicular-diode-laser-dacryocystorhinostomy-versus-conventional-transcanalicular-diode-laser-dacryocystorhinostomy
#16
Eduardo Damous Feijó, Juliana Alves Caixeta, Ana Carla de Souza Nery, Roberto Murillo Limongi, Suzana Matayoshi
External dacryocystorhinostomy (DCR) is the gold standard surgical technique for the treatment of primary acquired nasolacrimal duct obstruction (PANDO). However, new techniques such as endoscopic DCR and transcanalicular dacryocystorhinostomy (T-DCR) are being studied in an attempt to reduce surgical time, avoid external scarring and preserve the lacrimal pump while achieving the same efficacy. The purpose of this study was to compare the efficacy between conventional T-DCR and modified transcanalicular dacryocystorhinostomy (MT-DCR) in patients with PANDO...
May 26, 2017: European Archives of Oto-rhino-laryngology
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
#17
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/28537611/metal-nanoinks-as-chemically-stable-surface-enhanced-scattering-sers-probes-for-the-analysis-of-blue-bic-ballpoint-pens
#18
A Alyami, D Saviello, M A P McAuliffe, A Mirabile, L Lewis, D Iacopino
Metal nanoinks constituted by Ag nanoparticles and Au nanorods were employed as probes for the Surface Enhanced Raman Scattering (SERS) analysis of a blue BIC ballpoint pen. The dye components of the pen ink were first separated by thin layer chromatography (TLC) and subsequently analysed by SERS at illumination wavelengths of 514 nm and 785 nm. Compared to normal Raman conditions, enhanced spectra were obtained for all separated spots, allowing easy identification of phthalocyanine Blue 38 and triarylene crystal violet in the ink mixture...
June 7, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28535395/a-zinc-chloride-doped-adhesive-facilitates-sealing-at-the-dentin-interface-a-confocal-laser-microscopy-study
#19
Manuel Toledano, Raquel Osorio, Estrella Osorio, Inmaculada Cabello, Manuel Toledano-Osorio, Fátima S Aguilera
The aim of this study was to ascertain the effect of Zn-doping of dental adhesives and mechanical load cycling on the micromorphology of the resin-dentin interdiffusion zone (of sound and caries affected dentin). The investigation considered two different Zn-doped adhesive approaches and evaluated the interface using a doubled dye fluorescent technique and a calcium chelator fluorophore under a confocal laser scanning microscopy. Sound and carious dentin-resin interfaces of unloaded specimens were deficiently resin-hybridized, in general...
May 19, 2017: Journal of the Mechanical Behavior of Biomedical Materials
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
#20
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
keyword
keyword
80507
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"