298,027 results match your criteria Laser Treatment of Acquired and Congenital Vascular Lesions


Topological design, permeability and mechanical behavior of additively manufactured functionally graded porous metallic biomaterials.

Acta Biomater 2018 Dec 8. Epub 2018 Dec 8.

Department of Biomechanical Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands.

Recent advances in additive manufacturing (AM) have enabled the fabrication of functionally graded porous biomaterials (FGPBs) for application as orthopedic implants and bone substitutes. Here, we present a step-wise topological design of FGPB based on diamond unit cells to mimic the structure of the femoral diaphysis. The FGPB was manufactured from Ti-6Al-4V powder using the selective laser melting (SLM) technique. Read More

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December 2018

Laser treatment for retinopathy of prematurity: a decade since ETROP.

Ophthalmology 2018 Dec 8. Epub 2018 Dec 8.

Department of Ophthalmology and Visual Sciences, The Hospital for Sick Children, Toronto, ON, Canada; Department of Ophthalmology and Visual Sciences, University of Toronto, Toronto, ON, Canada. Electronic address:

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December 2018

A NEW COMPREHENSIVE PROCEDURE FOR CUSTOM-MADE TOTAL ANKLE REPLACEMENTS: MEDICAL IMAGING, JOINT MODELING, PROSTHESIS DESIGN, AND 3D PRINTING.

J Orthop Res 2018 Dec 11. Epub 2018 Dec 11.

Movement Analysis Laboratory, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy.

Many failures in total joint replacement are associated to prosthesis-to-bone mismatch. With recent additive-manufacturing, i.e. Read More

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December 2018

Bismuth Ferrite Second Harmonic Nanoparticles for Pulmonary Macrophage Tracking.

Small 2018 Dec 10:e1803776. Epub 2018 Dec 10.

Translational Molecular Imaging, Max-Planck Institute for Experimental Medicine, Hermann-Rein-Str. 3, 37075, Göttingen, Germany.

Recently, second harmonic generation (SHG) nanomaterials have been generated that are efficiently employed in the classical (NIR) and extended (NIR-II) near infrared windows using a multiphoton microscope. The aim was to test bismuth ferrite harmonic nanoparticles (BFO-HNPs) for their ability to monitor pulmonary macrophages in mice. BFO-loaded MH-S macrophages are given intratracheally to healthy mice or BFO-HNPs are intranasally instilled in mice with allergic airway inflammation and lung sections of up to 100 μM are prepared. Read More

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December 2018

Plasmonic-Assisted Graphene Oxide Artificial Muscles.

Adv Mater 2018 Dec 9:e1806386. Epub 2018 Dec 9.

State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Haidian district, Beijing, 100084, China.

Muscles and joints make highly coordinated motion, which can be partly mimicked to drive robots or facilitate activities. However, most cases primarily employ actuators enabling simple deformations. Therefore, a mature artificial motor system requires many actuators assembled with jointed structures to accomplish complex motions, posing limitations and challenges to the fabrication, integration, and applicability of the system. Read More

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December 2018

Expression of Nitric Oxide Synthase Interacting Protein (NOSIP) is Decreased in the Pulmonary Vasculature of Nitrofen-Induced Congenital Diaphragmatic Hernia.

Eur J Pediatr Surg 2018 Dec 10. Epub 2018 Dec 10.

Our Lady's Children's Hospital, National Children's Research Centre, Crumlin, Dublin, Ireland.

Introduction:  Persistent pulmonary hypertension (PPH) is a major cause of morbidity and mortality in newborns with congenital diaphragmatic hernia (CDH). PPH is characterized by increased vascular resistance and smooth muscle cell (SMC) proliferation, leading to obstructive changes in the pulmonary vasculature. Nitric oxide (NO), generated by endothelial NO synthase (eNOS), is an important regulator of vascular tone and plays a key role in pulmonary vasodilatation. Read More

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December 2018

Flattened fiber-optic ATR sensor enhanced by silver nanoparticles for glucose measurement.

Biomed Microdevices 2018 Nov 23;20(4). Epub 2018 Nov 23.

State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, China.

This paper proposes a novel fiber attenuated total reflection (ATR) sensor with silver nanoparticles (AgNPs) on the flattened structure based on mid-infrared spectroscopy for detecting low concentration of glucose with high precision. The flattened structure was designed to add the effective optical path length to improve the sensitivity. AgNPs were then deposited on the surface of the flattened area of the fiber via chemical silver mirror reaction for further improving the sensitivity by enhancing the infrared absorption. Read More

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November 2018

Laryngeal temperature simulations during carbon dioxide laser irradiation delivered by a scanning micromanipulator.

Lasers Med Sci 2018 Dec 7. Epub 2018 Dec 7.

Department. of Otolaryngology, Vanderbilt University Medical Center, 1215 21st Ave S., Nashville, TN, 37232, USA.

We use scatter-limited phototherapy techniques to calculate the time-dependent temperature profiles of incisions made with a commercial carbon dioxide laser being used to make a 1-mm incision under computer control using the Digital Acublade™ and with incisions made with the same laser under manual control. The goal is to understand the differences in the amount of lateral thermal damage that is likely from the computer-controlled incisions versus the manually controlled incisions. The temperature profiles are calculated from the absorption and scatter of light in a homogeneous material. Read More

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December 2018

Vascular remodeling of choroidal neovascularization in older myopic patients treated with ranibizumab.

Graefes Arch Clin Exp Ophthalmol 2018 Dec 7. Epub 2018 Dec 7.

Department of Ophthalmology, Hôpital Avicenne, AP-HP and Paris 13 University, Bobigny, France.

Purpose: To investigate morphological changes in myopic choroidal neovascularization (mCNV) using optical coherence tomography-angiography (OCT-A) after treatment with ranibizumab.

Methods: Retrospective analysis of consecutive patients over a 24-month period. All treatment-naïve mCNV were imaged at baseline with color pictures, spectral-domain OCT and OCT-A, and fluorescein angiography in selected cases. Read More

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December 2018

Visual acuity in patients with keratoconus: a comparison with matched regular myopic astigmatism.

Graefes Arch Clin Exp Ophthalmol 2018 Dec 7. Epub 2018 Dec 7.

Department of Ophthalmology, Barzilai Medical Center, Ashkelon and the Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheba, Israel.

Purpose: To compare uncorrected distance visual acuity (UDVA) and best-corrected distance visual acuity (CDVA) between patients with keratoconus (KC) and matched patients with regular myopic astigmatism.

Methods: This retrospective study included consecutive patients diagnosed with KC between 2008 and 2013 at Care-Vision Laser Centers, Tel-Aviv, Israel, and matched patients with regular myopic astigmatism. Data included were central corneal thickness (CCT), spherical equivalent (SE), cylinder (CYL), mean keratometric power, maximum keratometric power (K), UDVA, CDVA, and defocus equivalent (DEQ). Read More

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December 2018

In vivo histology and p.L132V mutation in KRT12 gene in Japanese patients with Meesmann corneal dystrophy.

Jpn J Ophthalmol 2018 Dec 7. Epub 2018 Dec 7.

Department of Ophthalmology, Kanazawa University Graduate School of Medical Science, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.

Purpose: To report genetic mutational analysis and in vivo histology of Meesmann corneal dystrophy.

Study Design: Prospective, case control study.

Methods: Six patients from three independent families with clinically diagnosed Meesmann corneal dystrophy were enrolled in this study. Read More

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December 2018

Anal Fistula Laser Closure: the length of fistula is the Achilles' heel.

Tech Coloproctol 2018 Dec 8. Epub 2018 Dec 8.

Department of Surgery, ASS-5 Friuli Venezia Giulia, San Vito al Tagliamento, 33078, Italy.

Background: Laser closure is a novel sphincter-saving technique for the treatment of anal fistula. The aim of this study was to report middle term results of laser treatment without closure of the internal orifice and to identify prognostic factors to improve selection criteria and maximize healing.

Methods: A retrospective observational study was conducted on patients treated with laser for transphinteric anal fistula. Read More

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December 2018

Comparison of intraoral biofilm reduction on silver-coated and silver ion-implanted stainless steel bracket material : Biofilm reduction on silver ion-implanted bracket material.

J Orofac Orthop 2018 Dec 10. Epub 2018 Dec 10.

Department of Orthodontics, Hannover Medical School, Carl-Neuberg-Str. 1, 30625, Hannover, Germany.

Purpose: The objective of this in situ study was to quantify the intraoral biofilm reduction on bracket material as a result of different surface modifications using silver ions. In addition to galvanic silver coating and physical vapor deposition (PVD), the plasma immersion ion implantation and deposition (PIIID) procedure was investigated for the first time within an orthodontic application.

Materials And Methods: An occlusal splint equipped with differently silver-modified test specimens based on stainless steel bracket material was prepared for a total of 12 periodontally healthy patients and was worn in the mouth for 48 h. Read More

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December 2018

THE DEVELOPMENT OF A NOVEL ARRAY DETECTOR FOR OVERCOMING THE DOSIMETRY CHALLENGES OF MEASURING IN VERY SHORT PULSED CHARGED PARTICLE BEAMS: THE ELIDOSE PROJECT.

Radiat Prot Dosimetry 2018 Dec 11. Epub 2018 Dec 11.

National Institute for Lasers, Plasma and Radiation Physics, Bucharest-409 Atomistilor St., Magurele, Ilfov County, Romania.

In-beam dose measurements are paramount for any application seeking to harness the effects of the radiation beam, so all the future applications of the laser accelerated beams (as generated in the ELI and CETAL projects) will need such measurements. With a very long history in measuring doses in charged particle beams, the medical and industrial applications setup a number of methods that could be also used for the dosimetry of the beams generated by laser pulses. Dose measurements rely heavily on what is seen as the gold standard in dose measurement: the ion chambers. Read More

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December 2018

Black aspergilli: A remaining challenge in fungal taxonomy?

Med Mycol 2018 Dec 11. Epub 2018 Dec 11.

BCCM/IHEM collection, Mycology and Aerobiology, Sciensano, J. Wytsmanstraat 14, 1050 Brussels, Belgium.

Aspergillus section Nigri is a taxonomically difficult but medically and economically important group. In this study, an update of the taxonomy of A. section Nigri strains within the BCCM/IHEM collection has been conducted. Read More

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December 2018

Transcriptomic Landscape of von Economo Neurons in Human Anterior Cingulate Cortex Revealed by Microdissected-Cell RNA Sequencing.

Cereb Cortex 2018 Dec 7. Epub 2018 Dec 7.

State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.

The von Economo neurons (VENs) are specialized large bipolar projection neurons with restricted distribution in the human brain, and they are far more abundant in humans than in non-human primates. However, VEN functions remain elusive due to the difficulty of isolating VENs and dissecting their connections in the brain. Here, we combined laser-capture-microdissection with RNA sequencing to describe the transcriptomic profile of VENs from human anterior cingulate cortex (ACC). Read More

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December 2018

New perspectives in the use of laser diode transscleral cyclophotocoagulation. A prospective single center observational cohort study.

Rom J Morphol Embryol 2018 ;59(3):869-872

Department of Neurology, "Victor Babeş" University of Medicine and Pharmacy, "Pius Brînzeu" Emergency County Clinical Hospital, Timişoara, Romania; Department of Ophthalmology, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania;

Purpose: The paper intends to present the results of using new methods of a new generation diode laser transscleral cyclophotocoagulation (TSCPC) in patients with different types of glaucoma.

Patients, Materials And Methods: There have been treated 53 eyes from 59 patients with glaucoma refractory to medical, laser or surgical treatment. We have used the newest generation of 810 nm wavelength diode laser. Read More

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January 2018

Effect of the laser beam on implant site preparation: a preliminary pilot study.

Rom J Morphol Embryol 2018 ;59(3):861-867

Department of Oral Rehabilitation and Dental Emergencies, Faculty of Dentistry, "Victor Babeş" University of Medicine and Pharmacy, Timişoara, Romania;

The aim of this preliminary study is to histologically evaluate the effects of erbium-doped yttrium aluminum garnet (Er:YAG) laser on soft and hard tissues during implant bed preparation, in comparison with bur and cutter in order to observe the following aspects: (i) the shape of the cavity, (ii) the presence of debris, and (iii) structural modification of the cell architecture. Bone temperature changes during the preparation of the implant bed were also measured in order to evaluate thermal damage on soft and hard tissues. Er:YAG laser, Fotona X-Runner scanner and circular cutter of 5 mm diameter were compared using an in vitro model. Read More

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January 2018

Appearance of SERS activity in single silver nanoparticles by laser-induced reshaping.

Nanoscale 2018 Dec 11. Epub 2018 Dec 11.

DST Unit of NanoScience (DST UNS) and Thematic Unit of Excellence (TUE), Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India.

We report simultaneous plasmonic scattering and Raman spectroscopic observations of single citrate capped silver nanoparticles (AgNPs) which exhibit surface enhanced Raman scattering (SERS) upon meeting specific conditions induced by laser (532 nm) exposure. We show that nanoparticles which are not initially SERS active become SERS active by laser-induced reshaping/reorientation. A set-up developed for these observations enabled in situ high speed time-lapse characterization using plasmonic and Raman spectroscopies in conjunction with dark-field microscopy (DFM). Read More

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December 2018

Oxidation of a phosphinidene oxide: formation of a dioxaphosphirane oxide with oxygen scrambling.

Chem Commun (Camb) 2018 Dec 10. Epub 2018 Dec 10.

College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China.

The oxidation of a prototypical phosphinidene oxide FP[double bond, length as m-dash]O has been studied in O2-doped Ar and N2 matrices at 10 K. Upon 266 nm laser irradiation, FP[double bond, length as m-dash]O combines with O2 and yields the cyclic peroxide, dioxaphosphirane oxide FP([double bond, length as m-dash]O)(O2). Unexpected oxygen scrambling occurs during the oxygenation as evidenced by the observation of a 1 : 2 mixture of FP([double bond, length as m-dash]16O)(18O18O) and FP([double bond, length as m-dash]18O)(16O18O) when 18O2 was used. Read More

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December 2018

Automated adherent cell elimination by a high-speed laser mediated by a light-responsive polymer.

Commun Biol 2018 7;1:218. Epub 2018 Dec 7.

4Biotechnology Research Institute for Drug Discovery, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 5th, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565 Japan.

Conventional cell handling and sorting methods require manual labor, which decreases both cell quality and quantity. To purify adherent cultured cells, cell purification technologies that are high throughput without dissociation and can be utilized in an on-demand manner are expected. Here, we developed a Laser-induced, Light-responsive-polymer-Activated, Cell Killing (LiLACK) system that enables high-speed and on-demand adherent cell sectioning and purification. Read More

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December 2018

Human stem cells home to and repair laser-damaged trabecular meshwork in a mouse model.

Commun Biol 2018 6;1:216. Epub 2018 Dec 6.

1Department of Ophthalmology, University of Pittsburgh, Pittsburgh, PA 15213 USA.

Glaucoma is the leading cause of irreversible vision loss, and reducing elevated intraocular pressure is currently the only effective clinical treatment. The trabecular meshwork is the main resistance site for aqueous outflow that maintains intraocular pressure. In this study, we transplanted human trabecular meshwork stem cells (TMSCs) intracamerally into mice that received laser photocoagulation over a 180° arc of the trabecular meshwork. Read More

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December 2018

Preserving Orbicularis Branches of the Zygomatic Nerve with the Orbicularis Oculi Muscle-Superficial Musculoaponeurotic System Flap Complex in Facelift Surgery.

Plast Reconstr Surg Glob Open 2018 Oct 4;6(10):e1961. Epub 2018 Oct 4.

Chang Gung Memorial Hospital, Taoyuan, Taiwan.

The orbicularis oculi muscle (OOM) is sometimes incorporated with the superficial musculoaponeurotic system (SMAS) flap to provide a stronger flap. While elevating the OOM flap, it is important to avoid injury to the orbicularis branches of the zygomatic nerve. When the orbicularis branches of the zygomatic nerve are identified during the OOM-SMAS flap elevation, a transverse OOM flap was created to preserve the nerve. Read More

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October 2018

Laser-assisted Lipolysis Burn Safety: Proposed Detailed Parameters with Assessment of Their Efficacy and Safety.

Authors:
Yasser Helmy Ali

Plast Reconstr Surg Glob Open 2018 Oct 3;6(10):e1934. Epub 2018 Oct 3.

Plastic and Burn Surgery Department, Al-Azhar University, Cairo, Egypt.

Background: Many recent studies have evaluated the clinical safety and efficacy of therapeutic lasers in laser lipolysis, but without detailed description of the safe and effective parameters.

Purpose: To propose a method for adjusting safe and effective parameters for laser lipolysis.

Methods: Detailed calculations of the safe and effective laser parameters for fat melting are proposed in the study. Read More

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October 2018

Efficacy of Laser Resurfacing and Facial Plastic Surgery Using Age, Glogau, and Fitzpatrick Rating.

Plast Reconstr Surg Glob Open 2018 Oct 2;6(10):e1740. Epub 2018 Oct 2.

USAF MacDill AFB, Tampa, Fla.

Background: To assess clinical outcomes based on established rating scales in patients who underwent treatment for rhytids using laser resurfacing with and without facial plastic surgery.

Methods: Retrospective case review of 48 patients treated by the senior author (J.E. Read More

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October 2018

SUPRASPINATUS TENDON PATHOMECHANICS: A CURRENT CONCEPTS REVIEW.

Authors:
Guido Spargoli

Int J Sports Phys Ther 2018 Dec;13(6):1083-1094

Background And Purpose: Tendinopathy of the supraspinatus muscle is a frequent cause of shoulder pain. Although it is a common condition, the pathophysiology is not fully understood. The purpose of this clinical commentary is to provide an overview of the pathophysiology of supraspinatus tendinopathy and discuss the conservative treatment solutions. Read More

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December 2018

Bilateral same-session flexible ureterorenoscopy for renal and/or ureteric stone disease treatment.

Arab J Urol 2018 Dec 18;16(4):441-445. Epub 2018 May 18.

Department of Urology, Hisar Intercontinental Hospital, Istanbul, Turkey.

Objective: To evaluate the effectiveness and safety of bilateral same-session flexible ureterorenoscopy (f-URS) in the treatment of bilateral renal and/or ureteric stone disease.

Patients And Methods: From October 2007 to December 2015, 62 patients who had undergone bilateral, same-session f-URS were included in the study. The procedures were performed under general anaesthesia, in lithotomy, and initiated on the side in which the patient was clinically symptomatic or on the side in which the stone was smaller. Read More

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December 2018

Is the 4.5-F ureteroscope (Ultra-Thin) an alternative in the management of ureteric and renal pelvic stones?

Arab J Urol 2018 Dec 21;16(4):429-434. Epub 2018 Jun 21.

Department of Urology, Recep Tayyip Erdoğan University School of Medicine, Rize, Turkey.

Objectives: To compare the 7.5-9.5F ureteroscope (URS) with the 4. Read More

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December 2018

Thulium laser enucleation of the prostate (ThuLEP): Results, complications, and risk factors in 139 consecutive cases.

Arab J Urol 2018 Dec 5;16(4):411-416. Epub 2018 Jul 5.

Department of Urology and Men's Health, Al Garhoud Private Hospital, Dubai, United Arab Emirates.

Objectives: To report our experience with the emerging technique of thulium laser enucleation of the prostate (ThuLEP) for the treatment for prostate hyperplasia.

Patients And Methods: Our inclusion criteria were an International Prostate Symptom Score (IPSS) of >15 and a quality-of-life (QoL) score of >3 in patients with confirmed bladder outflow obstruction, no longer responsive to medical therapy, with a significant post-void residual urine volume (PVR; >100 mL), with or without recurrent urinary tract infection and/or acute urinary retention. Patients with neurogenic bladder, urethral strictures, bladder stones, and previously failed transurethral prostate surgery were excluded. Read More

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December 2018

Wide-gamut lasing from a single organic chromophore.

Light Sci Appl 2018 5;7:101. Epub 2018 Dec 5.

1Department of Physics, University of Alberta, Edmonton, AB T6G2E1 Canada.

The development of wideband lasing media has deep implications for imaging, sensing, and display technologies. We show that a single chromophore can be engineered to feature wide-gamut fluorescence and lasing throughout the entire visible spectrum and beyond. This exceptional color tuning demonstrates a chemically controlled paradigm for light emission applications with precise color management. Read More

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December 2018

Photobiomodulation at Multiple Wavelengths Differentially Modulates Oxidative Stress and .

Oxid Med Cell Longev 2018 11;2018:6510159. Epub 2018 Nov 11.

Department of Medical, Surgical and Health Sciences, University of Trieste, 34127 Trieste, Italy.

Photobiomodulation (PBM) is emerging as an effective strategy for the management of multiple inflammatory conditions, including oral mucositis (OM) in cancer patients who receive chemotherapy or radiotherapy. Still, the poor understanding of the mechanisms by which the light interacts with biological tissues and the heterogeneity of light sources and protocols employed worldwide significantly limits its applicability. Reactive oxygen species (ROS) are massively generated during the early phases of OM and play a major role in the pathogenesis of inflammation in general. Read More

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November 2018

Development of multiplex PCR and multi-color fluorescent in situ hybridization (-FISH) coupled protocol for detection and imaging of multi-pathogens involved in inflammatory bowel disease.

Gut Pathog 2018 5;10:51. Epub 2018 Dec 5.

Division of Molecular Microbiology, Burnett School of Biomedical Sciences, University of Central Florida College of Medicine, 4110 Libra Drive, Orlando, FL USA.

Background: Several pathogens have been debated to play a role in inflammatory bowel disease (IBD) including Crohn's disease (CD). None of these pathogens have been investigated together in same clinical samples. We developed a multiplex PCR and multi-color fluorescent in situ hybridization (-FISH) protocols for simultaneous detection of CD-associated pathogens including subspecies (MAP), , and adherent-invasive strain LF82. Read More

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December 2018

Comparison of the permeability rate of nanoparticle calcium hydroxide and conventional calcium hydroxide using a fluorescence microscope.

Dent Res J (Isfahan) 2018 Nov-Dec;15(6):385-390

Department of Periodontology, Dental Faculty - Laser Research Center in Medical Sciences, AJA University of Medical Sciences, Tehran, Iran.

Background: The permeability feature of conventional calcium hydroxide (CH) and nanoparticle CH (NCH) was compared to show the desired effects of this new material and in case of confirmation of its other properties; CH can be used as a safe alternative.

Materials And Methods: This was carried out in two phases: First phase: measurement and comparison of the permeability rate of conventional CH and NCH in the dentinal tubules employing a fluorescence microscope were carried out. Second phase: measurement and comparison of the permeability rate of NCH and conventional CH in L929 fibroblast cells using a fluorescence microscope were carried out. Read More

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December 2018

Ubiquitin-Proteasome System Is Required for Efficient Replication of Singapore Grouper Iridovirus.

Front Microbiol 2018 26;9:2798. Epub 2018 Nov 26.

College of Marine Sciences, South China Agricultural University, Guangzhou, China.

The ubiquitin-proteasome system (UPS) serves as the major intracellular pathway for protein degradation and plays crucial roles in several cellular processes. However, little is known about the potential actions of the UPS during fish virus infection. In this study, we elucidated the possible roles of UPS in the life cycle of Singapore grouper iridovirus (SGIV); a large DNA virus that usually causes serious systemic diseases with high mortality in groupers. Read More

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November 2018

Microstructure-Stabilized Blue Phase Liquid Crystals.

ACS Omega 2018 Nov 13;3(11):15435-15441. Epub 2018 Nov 13.

Department of Electrical and Electronic Engineering, University of Bristol, Merchant Venturers Building, Woodland Road, Bristol BS8 1UB, U.K.

We show that micron-scale two-dimensional (2D) honeycomb microwells can significantly improve the stability of blue phase liquid crystals (BPLCs). Polymeric microwells made by direct laser writing improve various features of the blue phase (BP) including a dramatic extension of stable temperature range and a large increase both in reflectivity and thermal stability of the reflective peak wavelength. These results are mainly attributed to the omnidirectional anchoring of the isotropically oriented BP molecules at the polymer walls of the hexagonal microwells and at the top and bottom substrates. Read More

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November 2018

OH-Radical Oxidation of Lung Surfactant Protein B on Aqueous Surfaces.

Mass Spectrom (Tokyo) 2018 21;7(2):S0077. Epub 2018 Nov 21.

Linde Center for Global Environmental Science, California Institute of Technology.

Air pollutants generate reactive oxygen species on lung surfaces. Here we report how hydroxyl radicals (·OH) injected on the surface of water react with SP-B, a 25-residue polypeptide surrogate of human lung surfactant protein B. Our experiments consist of intersecting microjets of aqueous SP-B solutions with O/O/HO/N(g) gas streams that are photolyzed into ·OH(g) by 266 nm laser nanosecond pulses. Read More

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November 2018

Multimodal Intravascular Photoacoustic and Ultrasound Imaging.

Biomed Eng Lett 2018 May 26;8(2):193-201. Epub 2018 Mar 26.

Beckman Laser Institute, University of California, Irvine, 1002 Health Sciences Road, Irvine, CA 92617 USA.

The rupture of atherosclerotic plaques is the leading cause of death in developed countries. Early identification of vulnerable plaque is the essential step in preventing acute coronary events. Intravascular photoacoustic (IVPA) technology is able to visualize chemical composition of atherosclerotic plaque with high specificity and sensitivity. Read More

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A multicentre study investigating parameters which influence direct bacterial identification from urine.

PLoS One 2018 11;13(12):e0207822. Epub 2018 Dec 11.

Department of Clinical Microbiology, Hospital Clínic, School of Medicine, University of Barcelona, Barcelona, Spain.

Rapid diagnosis is one of the best ways to improve patient management and prognosis as well as to combat the development of bacterial resistance. The aim of this study was to study parameters that impact the achievement of reliable identification using a combination of flow cytometry and matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-ToF-MS).The study was carried out in nine hospitals in Spain and included 1,050 urine samples with bacterial counts of 5x106 bacteria/ml. Read More

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December 2018

Prospects and limitations of transition-metal dichalcogenide laser gain materials.

Nano Lett 2018 Dec 11. Epub 2018 Dec 11.

Nanolasers operate with a minimal amount of active material and low losses. In this regime, single layers of transition-metal dichalcogenides (TMDs) are being investigated as next generation gain materials due to their high quantum efficiency. We provide results from microscopic gain calculations of highly excited TMD monolayers and specify requirements to achieve lasing with four commonly used TMD semiconductors. Read More

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December 2018

Safety and Efficacy of Low-Level Laser Therapy in Autoimmune Thyroiditis: Long-Term Follow-Up Study.

Int J Endocrinol 2018 4;2018:8387530. Epub 2018 Nov 4.

Ultrasound Unit, Department of Radiology, University of Sao Paulo Medical School, Hospital das Clínicas, 05403-000 São Paulo, SP, Brazil.

Introduction: A randomized clinical trial (RCT) was performed to evaluate the efficacy of low-level laser therapy (LLLT) for hypothyroidism induced by chronic autoimmune thyroiditis (CAT).

Objective: The objective was to assess the safety and actions of LLLT 6 years after completion of the RCT.

Materials And Methods: Forty-three participants were invited to participate in this study 6 years after completion of the RCT. Read More

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November 2018

CRC4: Uses of Lasers in Prosthodontics.

J Indian Prosthodont Soc 2018 Oct;18(Suppl 1):S36

Buddha Institute of Dental Sciences and Hospital Gandhi Nagar, West of TV Tower, Kankarbagh, Patna, Bihar, India.

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October 2018

[Tratamientos estéticos. Posición de la Academia Nacional de Medicina de México].

Gac Med Mex 2018 ;154(6):740-741

Academia Nacional de Medicina de México, Comité de Vinculación y Difusión del Conocimiento. Ciudad de México, México.

In Mexico there is a proliferation of "centers for aesthetic medicine" that offer different treatments with laser beam, mesotherapy and hyaluronic acid and botulinum toxin injections. In numerous centers of this type, offered and performed by medical personnel that are neither trained or certified to ensure the quality of services. The National Academy of Medicine of Mexico and the National Normative Council for Medical Specialties (CONACEM) communicate their posture on this matter. Read More

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January 2018

Raman scattering from the bulk inactive out-of-plane [Formula: see text] mode in few-layer MoTe.

Sci Rep 2018 Dec 10;8(1):17745. Epub 2018 Dec 10.

Faculty of Physics, University of Warsaw, ul. Pasteura 5, 02-093, Warsaw, Poland.

We report a study of Raman scattering in few-layer MoTe focused on high-frequency out-of-plane vibrational modes near 291 cm which are associated with the bulk-inactive [Formula: see text] mode. Our temperature-dependent measurements reveal a double peak structure of the feature related to these modes in the Raman scattering spectra of 4- and 5-layer MoTe. In accordance with literature data, the doublet's lower- and higher-energy components are ascribed to the Raman-active A/[Formula: see text] vibrations involving, respectively, only the inner and surface layers. Read More

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December 2018

[Damage to subcutaneous nerves in endovenous laser coagulation of the great saphenous vein].

Angiol Sosud Khir 2018 ;24(4):81-87

Department of Surgery, Institute of Additional Professional Education, South Ural State Medical University of the RF Ministry of Public Health, Chelyabinsk, Russia.

The purpose of this study was to assess the incidence of the development of symptoms of damage to subcutaneous nerves after endovenous laser coagulation (EVLC) of the great saphenous vein (GSV), as well as to determine the effect of these symptoms on quality of life (QoL) of patients. Our retrospective study enrolled a total of 119 patients (mean age 50±13.9 years) subjected to 151 isolated EVLC of the GSV. Read More

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January 2018
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The assessment of retina in pregnant women with myopia.

Authors:

Neuro Endocrinol Lett 2018 Oct 10;39(4). Epub 2018 Oct 10.

Objectives: Myopia is associated with increased frequency of retinal degenerative changes which are the risk factors of intra- and postpartal ophthalmological complications. Aim of this study was to analyze the degenerative lesions detected in opthalmological examination (including peripheral retinal lesions) as a potential risk factors for eyes' status in terms of delivery in myopic women.

Material And Methods: 254 pregnant women affected with myopia underwent opthalmological examination as a screening method to examine retina. Read More

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October 2018

[Visual disorder after visual contact with a geodetic laser].

Pol Merkur Lekarski 2018 Nov;45(269):195-197

5 Military Clinical Hospital with Polyclinic in Cracow, Poland.

Macular edema is a rare complication that can occur under the influence of light. Damage occurs as a result of focusing the light beam on the macula. A 23-year-old patient reported to the hospital due to a sudden reduction in visual acuity of the left eye after visual contact with a geodetic laser at work. Read More

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November 2018

Evaluation of Coupling Efficiency in Round Window Vibroplasty With a New Handheld Probe.

Otol Neurotol 2019 Jan;40(1):e40-e47

Department of Otorhinolaryngology Head and Neck Surgery, Medical Faculty, University of Cologne, Cologne, Germany.

Hypothesis: A handheld measuring probe was developed that analyzes the vibration characteristics of the stapes footplate after backward stimulation of the cochlea in round window vibroplasty. In temporal bone experiments, the measuring accuracy of the probe was tested.

Background: In round window vibroplasty, the effectiveness of the transmitted vibrations into the inner ear is provided with limited visual and tactile information. Read More

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January 2019

Femtosecond Laser-Assisted Deep Lamellar Descemet Membrane Endothelial Keratoplasty for the Treatment of Endothelial Dysfunction Associated With Posterior Stromal Scarring.

Cornea 2018 Dec 7. Epub 2018 Dec 7.

Cornea, Cataract and Refractive Surgery Unit, Vissum Corporación, Alicante, Spain.

Purpose: To describe an alternative surgical approach, femtosecond laser-assisted deep lamellar Descemet membrane endothelial keratoplasty (Femto-DL-DMEK), for the treatment of corneal endothelial diseases associated with posterior stromal scarring.

Methods: Case report of a 52-year-old man with pseudophakic bullous keratopathy and posterior corneal scarring secondary to viral endotheliitis who underwent Femto-DL-DMEK. The surgical technique was as follows: First, a manual lamellar dissection plane was created at approximately 75% to 85% depth through a 5. Read More

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December 2018

COMPARATIVE EVALUATION OF ANTERIOR SEGMENT OPTICAL COHERENCE TOMOGRAPHY, ULTRASOUND BIOMICROSCOPY, AND INTRAOCULAR PRESSURE CHANGES AFTER PANRETINAL PHOTOCOAGULATION BY PASCAL AND CONVENTIONAL LASER.

Retina 2018 Nov 28. Epub 2018 Nov 28.

Glaucoma Services, Dr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India.

Purpose: To compare intraocular pressure, anterior segment optical coherence tomography, and ultrasound biomicroscopy parameters over 3 months after panretinal photocoagulation (PRP) for proliferative diabetic retinopathy after 1 of 2 sittings by conventional laser (half PRP) and a single sitting of Pattern Scan Laser (PASCAL) PRP.

Methods: This was a prospective, randomized, interventional study. All tests were performed at baseline, and at 1, 6, and 24 hours, and 1, 4, 8, and 12 weeks after PRP. Read More

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November 2018

Predicting the Therapeutic Efficacy of Laser Peripheral Iridotomy for Individuals with Asymptomatic Narrow Angle: The Triple Hump Sign.

J Glaucoma 2018 Dec 10. Epub 2018 Dec 10.

Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea.

Purpose: To evaluate the clinical efficacy of a novel screening sign (i.e., the Triple Hump [TH] sign) for prediction of laser peripheral iridotomy (LPI)'s intraocular pressure (IOP)-lowering effectiveness in subjects with asymptomatic narrow angles. Read More

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December 2018