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https://www.readbyqxmd.com/read/28431311/the-low-lying-electronic-states-and-optical-schemes-for-the-laser-cooling-of-the-bh-and-bh-ions
#1
Qing-Qing Zhang, Chuan-Lu Yang, Mei-Shan Wang, Xiao-Guang Ma, Wen-Wang Liu
The potential energy curves and transition dipole moments for the 1(2)Σ(+), 2(2)Σ(+), 1(2)Π and 2(2)Π electronic states of the two molecules are calculated using multi-reference configuration interaction and the large basis sets aug-cc-pwCV5Z. Based on the obtained potential energy curves, the rotational and vibrational energy levels of the states are obtained by solving the Schrödinger equation of nuclear motion, and the spectroscopic parameters are then obtained by fitting the energy levels to Dunham series expansions...
April 9, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28428827/fundamental-research-on-the-action-mechanism-of-the-800-nm-semiconductor-laser-on-skin-blackheads-and-coarse-pores
#2
Jie Lin, Li Jing, Hao Zhu, Fu-Sheng Dong
The aim of the study was to determine the mechanism of action of the 800 nm semiconductor laser on skin blackheads and coarse pores. A total of 24 healthy purebred short-haired male guinea pigs, weighing 350-400 g, were selected and smeared with 0.5 ml coal tar suspension evenly by injector once daily. Treatment was continued for 14 days to form an experimental area of 8×3 cm on the back of the guinea pigs. The animals were divided into the following groups: Normal control group (NC), low-dose laser treatment group (L-LS), high-dose laser treatment group (H-LS), and Q-switched Nd:YAG treatment group (QC)...
January 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28428016/the-role-of-low-level-laser-therapy-on-neuropathic-pain-relief-and-interleukin-6-expression-following-spinal-cord-injury-an-experimental-study
#3
Negin Mojarad, Atousa Janzadeh, Mahmoud Yousefifard, Farinaz Nasirinezhad
INTRODUCTION: The effect of Low Level Laser Therapy (LLLT) as a non-invasive treatment of spinal cord injury (SCI) is still under investigation. Therefore, the present study aimed to evaluate the effectiveness of LLLT on neuropathic pain and interleukin-6 (IL-6) expression following SCI in male rats. METHODS: 46 adult male rats were divided into 5 groups of control, SCI, treatment with methylprednisolone sodium succinate (MPSS), 1-week LLLT and 2-week LLLT. Animals underwent behavioral evaluations for motor behavior, level of allodynia and hyperalgesia every week...
April 17, 2017: Journal of Chemical Neuroanatomy
https://www.readbyqxmd.com/read/28427069/practical-lessons-from-protocol-i-for-the-management-of-diabetic-macular-edema
#4
Lekha Mukkamala, Neelakshi Bhagat, Marco A Zarbin
Protocol I, a multicenter randomized clinical trial, compared the visual outcomes of patients treated with 0.5 mg intravitreal ranibizumab with either prompt or deferred (by 24 weeks laser), 4 mg intravitreal triamcinolone with prompt laser, or sham injection with prompt laser for the treatment of center-involving diabetic macular edema (DME). A total of 854 adult patients with type I or II diabetes and any level of non-proliferative diabetic retinopathy or proliferative retinopathy with adequate panretinal photocoagulation, with best-corrected visual acuity (BCVA) of 78 to 24 ETDRS letters (Snellen equivalent of 20/32 to 20/320) and visual loss attributed to macular edema, or retinal thickening with central subfield thickness of at least 250 µm by OCT were enrolled...
2017: Developments in Ophthalmology
https://www.readbyqxmd.com/read/28425485/red-light-improves-spermatozoa-motility-and-does-not-induce-oxidative-dna-damage
#5
Daryl Preece, Kay W Chow, Veronica Gomez-Godinez, Kyle Gustafson, Selin Esener, Nicole Ravida, Barbara Durrant, Michael W Berns
The ability to successfully fertilize ova relies upon the swimming ability of spermatozoa. Both in humans and in animals, sperm motility has been used as a metric for the viability of semen samples. Recently, several studies have examined the efficacy of low dosage red light exposure for cellular repair and increasing sperm motility. Of prime importance to the practical application of this technique is the absence of DNA damage caused by radiation exposure. In this study, we examine the effect of 633 nm coherent, red laser light on sperm motility using a novel wavelet-based algorithm that allows for direct measurement of curvilinear velocity under red light illumination...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28422520/low-level-laser-therapy-improves-performance-and-reduces-fatigue-in-competitive-cyclists
#6
Fábio J Lanferdini, Rodrigo R Bini, Bruno M Baroni, Kelli D Klein, Felipe P Carpes, Marco A Vaz
Evidence supports that low-level laser therapy (LLLT) minimizes fatigue effects on muscle performance. However, the ideal LLLT dosage to improve athletes' performance during sports activities, such as cycling, is still unclear. Therefore, the goal of this study was to investigate the effects of different LLLT dosages on cyclists' performance in time-to-exhaustion tests. In addition, we looked at the effects of LLLT on the frequency content of the EMG signals to assess fatigue mechanisms. Twenty male competitive cyclists participated in a crossover, randomized, double-blind and placebo-controlled trial...
April 19, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/28420236/human-hepatocarcinoma-cell-targeting-by-glypican-3-ligand-peptide-functionalized-silica-nanoparticles-implications-for-ultrasound-molecular-imaging
#7
Marco Di Paola, Alessandra Quarta, Francesco Conversano, Enzo Antonio Sbenaglia, Simona Bettini, Ludovico Valli, Giuseppe Gigli, Sergio Casciaro
Silica nanoparticles (SiNPs) are widely studied nanomaterials for their potential employment in advanced biomedical applications, like selective molecular imaging and targeted drug delivery. SiNPs are generally low cost and high biocompatible, can be easily functionalized with a wide variety of functional ligands and have been demonstrated to be effective in enhancing ultrasound contrast at clinical diagnostic frequencies. Therefore, SiNPs might be used as contrast agents in echographic imaging. In this work, we have developed a SiNPs-based system for the in vitro molecular imaging of hepatocellular carcinoma cells that express high levels of Glypican-3 protein (GPC-3) on their surface...
April 18, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28418107/a-new-path-in-defining-light-parameters-for-hair-growth-discovery-and-modulation-of-photoreceptors-in-human-hair-follicle
#8
Serena Buscone, Andrei N Mardaryev, Bianca Raafs, Jan W Bikker, Carsten Sticht, Norbert Gretz, Nilofer Farjo, Natallia E Uzunbajakava, Natalia V Botchkareva
BACKGROUND AND OBJECTIVE: Though devices for hair growth based on low levels of light have shown encouraging results, further improvements of their efficacy is impeded by a lack of knowledge on the exact molecular targets that mediate physiological response in skin and hair follicle. The aim of this study was to investigate the expression of selected light-sensitive receptors in the human hair follicle and to study the impact of UV-free blue light on hair growth ex vivo. MATERIAL AND METHODS: The expression of Opsin receptors in human skin and hair follicles has been characterized using RT-qPCR and immunofluorescence approaches...
April 18, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28417947/pro-angiogenic-effects-of-low-dose-ethoxidine-in-a-murine-model-of-ischemic-hindlimb-correlation-between-ethoxidine-levels-and-increased-activation-of-the-nitric-oxide-pathway
#9
Nicolas Clere, Kim Hung Thien To, Samuel Legeay, Samuel Bertrand, Jean Jacques Helesbeux, Olivier Duval, Sébastien Faure
Ethoxidine, a benzo[c]phenanthridine derivative, has been identified as a potent inhibitor of topoisomerase I in cancer cell lines. Our group has reported paradoxical properties of ethoxidine in cellular processes leading to angiogenesis on endothelial cells. Because low concentration ethoxidine is able to favor angiogenesis, the present study aimed to investigate the ability of 10(-9) M ethoxidine to modulate neovascularization in a model of mouse hindlimb ischemia. After inducing unilateral hindlimb ischemia, mice were treated for 21 days with glucose 5% or with ethoxidine, to reach plasma concentrations equivalent to 10(-9) M...
April 12, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28416848/-effect-of-low-level-laser-irradiation-on-proliferation-and-osteogenic-differentiation-of-human-adipose-derived-stromal-cells
#10
H X Sui, P J Lv, Y G Wang, Y Wang, Y C Sun
OBJECTIVE: To examine the in vitro effects of low-level laser irradiation (LLLI) on proliferation and differentiation of human adipose-derived stromal cells (hASCs). METHODS: Cultured cells were exposed to different doses of LLLI with a semiconductor diode laser (980 nm; 100 mW-12 W power output). The effects of laser on proliferation were assessed daily up to seven days of culture in cells irradiated for four consecutive days with laser doses of 2, 4, 6 or 8 J/cm(2), the cells without irradiation were used as controls...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28415291/experimental-demonstration-of-low-laser-plasma-instabilities-in-gas-filled-spherical-hohlraums-at-laser-injection-angle-designed-for-ignition-target
#11
Ke Lan, Zhichao Li, Xufei Xie, Yao-Hua Chen, Chunyang Zheng, Chuanlei Zhai, Liang Hao, Dong Yang, Wen Yi Huo, Guoli Ren, Xiaoshi Peng, Tao Xu, Yulong Li, Sanwei Li, Zhiwen Yang, Liang Guo, Lifei Hou, Yonggang Liu, Huiyue Wei, Xiangming Liu, Weiyi Cha, Xiaohua Jiang, Yu Mei, Yukun Li, Keli Deng, Zheng Yuan, Xiayu Zhan, Haijun Zhang, Baibin Jiang, Wei Zhang, Xuewei Deng, Jie Liu, Kai Du, Yongkun Ding, Xiaofeng Wei, Wanguo Zheng, Xiaodong Chen, E M Campbell, Xian-Tu He
Octahedral spherical hohlraums with a single laser ring at an injection angle of 55^{∘} are attractive concepts for laser indirect drive due to the potential for achieving the x-ray drive symmetry required for high convergence implosions. Laser-plasma instabilities, however, are a concern given the long laser propagation path in such hohlraums. Significant stimulated Raman scattering has been observed in cylindrical hohlraums with similar laser propagation paths during the ignition campaign on the National Ignition Facility (NIF)...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28409937/spatial-and-temporal-localization-of-flavonoid-metabolites-in-strawberry-fruit-fragaria-%C3%A3-ananassa
#12
Anna Christina Crecelius, Dirk Hoelscher, Thomas Hoffmann, Bernd Schneider, Thilo C Fischer, Magda-Viola Hanke, Henry Flachowsky, Wilfried Schwab, Ulrich S Schubert
Flavonoids are important metabolites in strawberries (Fragaria × ananassa), since they accomplish an extensive collection of physiological functions and are valuable for human health. However, their localization within the fruit tissue has not been extensively explored. Matrix-assisted laser desorption/ionization mass spectrometric imaging (MALDI-MSI) was employed to shed light on the spatial distribution of flavonoids during fruit development. One wild-type (WT) and two transgenic lines were compared, where in the transgenics enzymes anthocyanidin reductase (ANRi) and flavonol synthase (FLSi), respectively were down-regulated using an RNAi based silencing approach...
April 14, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28404947/identification-of-urine-biomarkers-associated-with-lung-adenocarcinoma
#13
Weiwei Wang, Shanshan Wang, Man Zhang
Lung adenocarcinoma (LAC) progression is accompanied by changes in protein levels that may be reflected in body fluids, such as urine. Urine collected from LAC patients (n=34) and healthy controls (n=36) was analyzed via matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF-MS) combined with weak cationic exchange magnetic beads. The results revealed 76 urinary polypeptides significantly different between LAC patients and normal controls (P<0.05). Twenty-two of these peptides were up-regulated and 54 were down-regulated...
March 3, 2017: Oncotarget
https://www.readbyqxmd.com/read/28401348/ultrapulsed-fractional-ablative-carbon-dioxide-laser-treatment-of-hypertrophic-burn-scars-evaluation-of-an-in-patient-controlled-standardized-treatment-approach
#14
Julian Poetschke, Ulf Dornseifer, Matteo Tretti Clementoni, Markus Reinholz, Hannah Schwaiger, Stephanie Steckmeier, Thomas Ruzicka, Gerd G Gauglitz
In this study, we aimed to quantify the effects of fractional ablative carbon dioxide laser therapy in the treatment of widespread hypertrophic burn scars. While many different pilot studies have described the potential of the technology and expert groups and current guidelines, alike, recommend its use, the level of evidence for the efficacy of fractional CO2-laser treatment for burn scars is currently very low. Ten patients (three male, seven female) with hypertrophic burn scars were treated with a single course of fractional CO2-laser therapy in an in-patient controlled setup, using a standardized treatment paradigm...
April 12, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28396101/the-effectiveness-of-treatments-for-androgenetic-alopecia-a-systematic-review-and-meta-analysis
#15
REVIEW
Areej Adil, Marshall Godwin
BACKGROUND: Androgenetic alopecia, or male pattern hair loss, is a hair loss disorder mediated by dihydrotestosterone, the potent form of testosterone. Currently, minoxidil and finasteride are Food and Drug Administration (FDA)-approved, and HairMax LaserComb, which is FDA-cleared, are the only treatments recognized by the FDA as treatments of androgenetic alopecia. OBJECTIVE: This systematic review and meta-analysis assesses the efficacy of nonsurgical treatments of androgenetic alopecia in comparison to placebo for improving hair density, thickness, growth (defined by an increased anagen:telogen ratio), or subjective global assessments done by patients and investigators...
April 7, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28394288/sub-pixel-extraction-of-laser-stripe-center-using-an-improved-gray-gravity-method-%C3%A2
#16
Yuehua Li, Jingbo Zhou, Fengshan Huang, Lijian Liu
Laser stripe center extraction is a key step for the profile measurement of line structured light sensors (LSLS). To accurately obtain the center coordinates at sub-pixel level, an improved gray-gravity method (IGGM) was proposed. Firstly, the center points of the stripe were computed using the gray-gravity method (GGM) for all columns of the image. By fitting these points using the moving least squares algorithm, the tangential vector, the normal vector and the radius of curvature can be robustly obtained...
April 10, 2017: Sensors
https://www.readbyqxmd.com/read/28394081/the-effect-of-low-level-laser-therapy-as-an-adjunct-to-non-surgical-periodontal-treatment-on-gingival-crevicular-fluid-levels-of-transforming-growth-factor-beta-1-tissue-plasminogen-activator-and-plasminogen-activator-inhibitor-1-in-smoking-and-non-smoking
#17
F Pamuk, M Lütfioğlu, A Aydoğdu, C Z Koyuncuoglu, E Cifcibasi, O S Badur
BACKGROUND AND OBJECTIVE: This study aimed to investigate the effects of low-level laser therapy (LLLT) as an adjunct to scaling and root planing (SRP) on smoking and non-smoking patients with chronic periodontitis. MATERIAL AND METHODS: The study was conducted using a split-mouth design with 30 patients with chronic periodontitis (15 smokers, 15 non-smokers) and 30 healthy individuals matched for age, sex and smoking status as controls. Groups were constituted as follows: Cp+SRP+Sham: non-smokers with chronic periodontitis treated with SRP; Cp+SRP+LLLT: non-smokers with chronic periodontitis treated with SRP+LLLT; SCp+SRP+Sham: smokers with chronic periodontitis treated with SRP; SCp+SRP+LLLT: smokers with chronic periodontitis treated with SRP+LLLT; C: control group comprised of periodontally healthy non-smokers; SC: control group comprised of periodontally healthy smokers...
April 10, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28391461/toxicological-assessment-of-tungsten-oxide-nanoparticles-in-rats-after-acute-oral-exposure
#18
Srinivas Chinde, Naresh Dumala, Mohammed Fazlur Rahman, Sarika Srinivas Kalyan Kamal, Srinivas Indu Kumari, Mohammed Mahboob, Paramjit Grover
Advances in and the rapid growth of the nanotechnology sector have escalated manufacture of nanoparticles (NPs), resulting in a significant increase in the probability of exposure of humans and wildlife to these materials. Many NPs have been found to exert genotoxicity. Therefore, genotoxicity studies are mandatory to assess the toxicity of NPs as a concern of succumbing to genetic diseases and cancers are universal. Tungsten oxide (WO3) NPs are being explored extensively in various fields. However, the toxicological data of WO3 NPs by oral route in mammals is limited...
April 8, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28391435/evaluation-of-different-treatment-protocols-for-dentin-hypersensitivity-an-18-month-randomized-clinical-trial
#19
Anely Oliveira Lopes, Carlos de Paula Eduardo, Ana Cecília Correa Aranha
This randomized and longitudinal in vivo study aimed to assess different protocols for the treatment of dentin hypersensitivity with low-power laser (with different doses), high-power laser, and a desensitizing agent, for a period of 12 and 18 months. The lesions from 32 patients (117 lesions), who were submitted to the inclusion and exclusion criteria, were divided into nine groups (n = 13): G1: Gluma Desensitizer (Heraeus Kulzer), G2: low-power laser with low dose (three points of irradiation in vestibular portion and an apical point 30 mW, 10 J/cm(2), 9 s per point with the wavelength of 810 nm, with three sessions with an interval of 72 h), G3: low-power laser with high dose (one point in the cervical area, and one apical point 100 mW, 40 J/cm(2), 11 s per point with the wavelength of 810 nm in three sessions with an interval of 72 h), G4: low-power laser with low dose + Gluma Desensitizer, G5: low-power laser with high dose + Gluma Desensitizer, G6: Nd:YAG laser (Power Laser™ ST6, Research® in contact 1...
April 8, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28391087/effects-of-two-wattages-of-low-level-laser-therapy-on-orthodontic-tooth-movement
#20
M Milligan, Y Arudchelvan, S-G Gong
INTRODUCTION: Mixed outcomes have been found in animal and clinical studies with regard to the use of low-level laser therapy (LLLT) as a modality to accelerate orthodontic tooth movement (OTM). One major reason for the variable findings is the different methodologies and protocols for laser therapy use. OBJECTIVE: The aim of this study was to determine whether orthodontically moved molars exposed to two different wattages at the same energy density of LLLT exhibited differences in the amount of tooth movement and molecular and histological changes in the adjacent periodontal areas...
March 24, 2017: Archives of Oral Biology
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