keyword
MENU ▼
Read by QxMD icon Read
search

Laser medicine

keyword
https://www.readbyqxmd.com/read/28812315/metabolite-cycled-steam-and-semi-laser-localization-for-mr-spectroscopy-of-the-human-brain-at-9-4t
#1
Ioannis-Angelos Giapitzakis, Tingting Shao, Nikolai Avdievich, Ralf Mekle, Roland Kreis, Anke Henning
PURPOSE: Metabolite cycling (MC) is an MRS technique for the simultaneous acquisition of water and metabolite spectra that avoids chemical exchange saturation transfer effects and for which water may serve as a reference signal or contain additional information in functional or diffusion studies. Here, MC was developed for human investigations at ultrahigh field. METHODS: MC-STEAM and MC-semi-LASER are introduced at 9.4T with an optimized inversion pulse and elaborate coil setup...
August 15, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28806859/analysis-of-low-molecular-weight-compounds-using-maldi-and-ldi-tof-ms-direct-detection-of-active-pharmaceutical-ingredients-in-different-formulations
#2
João L Bronzel, Cintia D F Milagre, Humberto M S Milagre
Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) is a high throughput, easy to use analytical technique. The simple sample preparation of this technique and its tolerance to the presence of contaminants are among its advantages. In contrast, depending on the matrix used, MALDI can ionize and generates ions in the low m/z range that complicate the interpretation of the spectra of low molecular weight compounds. To address this issue, one can envisage the use of tunable ionic matrices that can reduce the low m/z interferents...
August 14, 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28801789/multimodal-laser-ablation-desorption-imaging-analysis-of-zn-and-mmp-11-in-breast-tissues
#3
Raquel González de Vega, María Luisa Fernández Sanchez, Noemí Eiro, Francisco J Vizoso, Michael Sperling, Uwe Karst, Alfredo Sanz Medel
Matrix metalloproteinases (MMPs) are a family of zinc-dependent endopeptidases. The main functions of these metalloproteinases are the degradation of the stromal connective tissue and basement membrane components. Recent data from model systems suggest that MMPs are involved in breast cancer (BC) initiation, invasion, and metastasis. Particularly, MMP-11 (stromelysin-3) is expressed in stromal fibroblasts adjacent to epithelial tumor cells, and high levels of this metalloproteinase were associated with tumor progression and poor prognosis of BC...
August 12, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28780467/in-vitro-schistosomicidal-and-antiviral-activities-of-arctium-lappa-l-asteraceae-against-schistosoma-mansoni-and-herpes-simplex-virus-1
#4
Mirna Meana Dias, Ohana Zuza, Lorena R Riani, Priscila de Faria Pinto, Pedro Luiz Silva Pinto, Marcos P Silva, Josué de Moraes, Ana Caroline Z Ataíde, Fernanda de Oliveira Silva, Alzira Batista Cecílio, Ademar A Da Silva Filho
Schistosomiasis and herpes diseases represent serious issues to the healthcare systems, infecting a large number of people worldwide, mainly in developing countries. Arctium lappa L. (Asteraceae), known as "bardana" and "burdock", is a medicinal plant popularly used for several purposes, including as antiseptic. In this study, we evaluated the in vitro schistosomicidal and antiherpes activities of the crude extract of A. lappa, which have not yet been described. Fruits of A. lappa L. were extracted by maceration with ethanol: H2O (96:4 v/v) in order to obtain the hydroalcoholic extract of A...
August 3, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28776111/methylene-blue-mediated-photobiomodulation-on-human-osteoblast-cells
#5
Gamze Bölükbaşı Ateş, Ayşe Ak, Bora Garipcan, Murat Gülsoy
Photobiomodulation (PBM) and photodynamic therapy (PDT) are two major methods, which use light in medicine and dentistry. PBM uses low-level laser light to induce cell proliferation and activity. In contrast, PDT use laser light combined with a photosensitizer (PS) to cause cell death. Due to similar, not fully understood mechanisms and biphasic response of light, unexpected and complex outcomes may be observed. In the present study, the effect of 635 nm laser light, with power density 50 mW/cm(2), at three different energy densities (0...
August 4, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/28742057/effect-of-photodynamic-therapy-in-the-reduction-of-halitosis-in-patients-with-multiple-sclerosis-clinical-trial
#6
Marcela Leticia Leal Gonçalves, Sandra Kalil Bussadori, Yara Dadalti Fragoso, Vinícius Vieira Belarmino da Silva, Alessandro M Deana, Ana Carolina Ciarcia, Erika Horácio Pinto, Anna Carolina Ratto Tempestini Horliana, Cristiane Miranda França
Smell and odours play a vital role in social interaction. Halitosis is a social problem that affects one-third of the population causing a negative impact in the quality of life. There is little knowledge on the prevalence and management of halitosis in Multiple Sclerosis (MS) patients. The present study aimed to evaluate the presence of halitosis in patients with MS when compared to a control group and the treatment with antimicrobial photodynamic therapy (aPDT) against halitosis. This is a case-control clinical study where 60 patients were evaluated: 30 MS patients in treatment at the Specialties Clinic School of Medicine, and 30 healthy patients, matched in age and gender, for the control group...
July 25, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28722334/potential-emerging-treatment-in-vitiligo-using-er-yag-in-combination-with-5fu-and-clobetasol
#7
Fatemeh Mokhtari, Anis Bostakian, Zabihollah Shahmoradi, Tohid Jafari-Koshki, Fariba Iraji, Gita Faghihi, Sayed Mohsen Hosseini, Behzad Bafandeh
BACKGROUND: Vitiligo is a pigmentary disorder of skin affecting at least 1% of the world population of all races in both sexes. Its importance is mainly due to subsequent social and psychological problems rather than clinical complications. Various treatment choices are available for vitiligo; however, laser-based courses have shown to give more acceptable results. OBJECTIVE: The aim of this trial was to evaluate the efficacy of Er:YAG laser as a supplementary medicine to topical 5FU and clobetasol in vitiligo patients...
July 19, 2017: Journal of Cosmetic Dermatology
https://www.readbyqxmd.com/read/28714132/news-announcements-american-society-for-laser-medicine-and-surgery-inc
#8
(no author information available yet)
No abstract text is available yet for this article.
August 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28710012/antibiofilm-activity-of-vetiveria-zizanioides-root-extract-against-methicillin-resistant-staphylococcus-aureus
#9
Arunachalam Kannappan, Shanmugaraj Gowrishankar, Ramanathan Srinivasan, Shunmugiah Karutha Pandian, Arumugam Veera Ravi
Methicillin-resistant Staphylococcus aureus (MRSA) is a leading human pathogen responsible for causing chronic clinical manifestation worldwide. In addition to antibiotic resistance genes viz. mecA and vanA, biofilm formation plays a prominent role in the pathogenicity of S. aureus by enhancing its resistance to existing antibiotics. Considering the role of folk medicinal plants in the betterment of human health from the waves of multidrug resistant bacterial infections, the present study was intended to explore the effect of Vetiveria zizanioides root on the biofilm formation of MRSA and its clinical counterparts...
July 11, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28702002/production-of-lipopeptide-biosurfactant-by-a-marine-nesterenkonia-sp-and-its-application-in-food-industry
#10
George S Kiran, Sethu Priyadharsini, Arya Sajayan, Gopal B Priyadharsini, Navya Poulose, Joseph Selvin
Biosurfactants are smart biomolecules which have wide spread application in medicines, processed foods, cosmetics as well as in bioremediation. In food industry, biosurfactants are used as emulsion stabilizing agents, antiadhesives, and antimicrobial/antibiofilm agents. Nowadays biosurfactant demands in industries has increased tremendously and therefore new bacterial strains are being explored for large scale production of biosurfactants. In this study, an actinobacterial strain MSA31 was isolated from a marine sponge Fasciospongia cavernosa which showed high activity in biosurfactant screening assays such as drop collapsing, oil displacement, lipase and emulsification...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28691380/transverse-relaxation-time-constants-of-the-five-major-metabolites-in-human-brain-measured-in-vivo-using-laser-and-press-at-3-t
#11
Dinesh K Deelchand, Edward J Auerbach, Naoharu Kobayashi, Małgorzata Marjańska
PURPOSE: The goal of this study was to measure and compare the apparent transverse relaxation time constants (T2 ) of five intracellular metabolites using localization by adiabatic selective refocusing (LASER) and point-resolved spectroscopy (PRESS) sequences in the human brain at 3 T. METHODS: Five healthy subjects were studied at 3 T. (1) H spectra from the prefrontal cortex were acquired at six different echo times using LASER and PRESS sequences. Postprocessed data were analyzed with LCModel, and the resulting amplitudes were fitted using a mono-exponential decay function to determine the T2 of metabolites...
July 10, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28687935/update-of-ablative-fractionated-lasers-to-enhance-cutaneous-topical-drug-delivery
#12
REVIEW
Jill S Waibel, Ashley Rudnick, Deborah R Shagalov, Danielle M Nicolazzo
Ablative fractional lasers (AFXL) enhance uptake of therapeutics and this newly emerging field is called laser-assisted drug delivery (LAD). This new science has emerged over the past decade and is finding its way into clinical practice. LAD is poised to change how medicine delivers drugs. Topical and systemic application of pharmaceutical agents for therapeutic effect is an integral part of medicine. With topical therapy, the stratum corneum barrier of the skin impairs the ability of drugs to enter the body...
July 7, 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28687792/maldi-tof-ms-as-a-novel-tool-for-the-estimation-of-postmortem-interval-in-liver-tissue-samples
#13
Chengzhi Li, Zhengdong Li, Ya Tuo, Dong Ma, Yan Shi, Qinghua Zhang, Xianyi Zhuo, Kaifei Deng, Yijiu Chen, Zhenyuan Wang, Ping Huang
Estimation of the postmortem interval (PMI) is a complicated task in forensic medicine, especially during homicide and unwitnessed death investigations. Many biological, chemical, and physical indicators can be used to determine the postmortem interval, but most are not accurate. Here, we present a novel matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) method that can be used for the estimation of PMI using molecular images and multivariate analyses. In this study, we demonstrate that both rat and human liver tissues of various PMIs (0, 2, 4, and 6days) can be discriminated using MALDI imaging and principal component analysis (PCA)...
July 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28672973/compound-anisodine-affects-the-proliferation-and-calcium-overload-of-hypoxia-induced-rat-retinal-progenitor-cells-and-brain-neural-stem-cells-via-the-p-erk1-2-hif-1%C3%AE-vegf-pathway
#14
Qun Wang, Shan Gao, Yu Luo, Qian-Yan Kang
As a Traditional Chinese Medicine, compound anisodine (CA) has previously been shown to regulate the vegetative nervous system, improve microcirculation and scavenge reactive oxygen species, and has been commonly utilized as a neuroprotective agent to treat ischemic optic neuropathy and choroidoretinopathy. The present study aimed to investigate the neuroprotective effects of CA on the proliferation and calcium overload of hypoxia-induced rat retinal progenitor cells (RPCs) and brain neural stem cells (BNSCs) harvested from neonatal Sprague-Dawley rats...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28668582/selective-laser-sintering-sls-3d-printing-of-medicines
#15
Fabrizio Fina, Alvaro Goyanes, Simon Gaisford, Abdul W Basit
Selective laser sintering (SLS) 3-dimensional printing is currently used for industrial manufacturing of plastic, metallic and ceramic objects. To date there have been no reports on the use of SLS to fabricate oral drug loaded products; therefore, the aim of this work was to explore the suitability of SLS printing for manufacturing medicines. Two thermoplastic pharmaceutical grade polymers, Kollicoat IR (75% polyvinyl alcohol and 25% polyethylene glycol copolymer) and Eudragit L100-55 (50% methacrylic acid and 50% ethyl acrylate copolymer), with immediate and modified release characteristics respectively, were selected to investigate the versatility of a SLS printer...
June 29, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28667930/transected-sciatic-nerve-repair-by-diode-laser-protein-soldering
#16
Reza Fekrazad, Omid Mortezai, MirSepehr Pedram, Katayoun Am Kalhori, Khojasteh Joharchi, Korosh Mansoori, Roja Ebrahimi, Fatemeh Mashhadiabbas
BACKGROUND AND OBJECTIVE: Despite advances in microsurgical techniques, repair of peripheral nerve injuries (PNI) is still a major challenge in regenerative medicine. The standard treatment for PNI includes suturing and anasthomosis of the transected nerve. The objective of this study was to compare neurorraphy (nerve repair) using standard suturingto diode laser protein soldering on the functional recovery of transected sciatic nerves. STUDY DESIGN/MATERIALS AND METHODS: Thirty adult male Fischer-344 Wistar rats were randomly assigned to 3 groups: 1...
June 13, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28652897/low-level-laser-therapy-in-russia-history-science-and-practice
#17
REVIEW
Sergey Vladimirovich Moskvin
In Russia (formerly USSR) study of biomodulation action (BMA) mechanisms of low-intensity laser irradiation (LILI) began in 1964, immediately after the development of lasers. During the period from 1965 to 1972 several dozens of scientific conferences were held, hundreds of studies were published. Generally, secondary mechanisms and results of LILI effect on patients with various diseases were studied. This data was immediately implemented into practical medicine in the fields of oncology, surgery, dermatology and dentistry, and since 1974 low level laser therapy (LLLT) is included in the standard of state medical care...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/28649464/light-in-diagnosis-therapy-and-surgery
#18
Seok Hyun Yun, Sheldon J J Kwok
Light and optical techniques have made profound impacts on modern medicine, with numerous lasers and optical devices being currently used in clinical practice to assess health and treat disease. Recent advances in biomedical optics have enabled increasingly sophisticated technologies - in particular those that integrate photonics with nanotechnology, biomaterials and genetic engineering. In this Review, we revisit the fundamentals of light-matter interactions, describe the applications of light in imaging, diagnosis, therapy and surgery, overview their clinical use, and discuss the promise of emerging light-based technologies...
2017: Nature biomedical engineering
https://www.readbyqxmd.com/read/28628752/high-prevalence-of-resistance-to-fluoroquinolones-and-tetracycline-campylobacter-spp-isolated-from-poultry-in-poland
#19
Anna Woźniak-Biel, Gabriela Bugla-Płoskońska, Alicja Kielsznia, Kamila Korzekwa, Anna Tobiasz, Agnieszka Korzeniowska-Kowal, Alina Wieliczko
Campylobacter spp. is a major cause of foodborne diseases in humans, particularly when transmitted by the handling or consumption of undercooked poultry meat. Most Campylobacter infections are self-limiting, but antimicrobial treatment (e.g., fluoroquinolones and macrolides) is necessary in severe or prolonged cases. The indiscriminate use of these drugs, both in clinical medicine and animal production, has a major impact on public health. The aim of the present study was to identify Campylobacter strains, isolated from turkey and broilers, using both PCR and the matrix-assisted laser desorption-ionization time-of-flight (MALDI-TOF) methods to reveal the accuracy of identification, as well to evaluate the antimicrobial and genetic resistance of the investigated strains...
June 19, 2017: Microbial Drug Resistance: MDR: Mechanisms, Epidemiology, and Disease
https://www.readbyqxmd.com/read/28618085/improved-localization-spectral-quality-and-repeatability-with-advanced-mrs-methodology-in-the-clinical-setting
#20
Dinesh K Deelchand, Kejal Kantarci, Gülin Öz
PURPOSE: To investigate the utility of an advanced magnetic resonance spectroscopy (MRS) protocol in the clinical setting, and to compare the localization accuracy, spectral quality, and quantification repeatability between this advanced and the conventional vendor-provided MRS protocol on a clinical 3T platform. METHODS: Proton spectra were measured from the posterior cingulate cortices in 30 healthy elderly subjects by clinical MR technologists using a vendor-provided (point resolved spectroscopy with advanced 3D gradient-echo B0 shimming) and an advanced (semi-LASER with FAST(EST)MAP shimming) protocol, in random order...
June 15, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
keyword
keyword
54495
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"