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https://www.readbyqxmd.com/read/29161690/catechins-blunt-the-effects-of-oxldl-and-its-primary-metabolite-phosphatidylcholine-hydroperoxide-on-endothelial-dysfunction-through-inhibition-of-oxidative-stress-and-restoration-of-enos-in-rats
#1
Hao-Hsiang Chang, Chen-Yen Chien, Kuo-Hsin Chen, Shih-Chung Huang, Chiang-Ting Chien
BACKGROUND/AIMS: We explored the effects of catechins (decaffeinated green tea extracts containing (-)-epicatechin, (-)-epigallocatechin, (-)-epicatechin gallate and (-)-epigallocatechin gallate) on atherosclerosis risk factors, oxidized low-density lipoprotein (oxLDL) and its primary metabolite, phosphatidylcholine hydroperoxide (PCOOH) induced oxidative injury in cultured endothelial cell line and rats. METHODS: We used endothelial cell line and male Wistar rats to determine the effect of catechins on oxLDL or PCOOH induced oxidative injury including apoptosis, H2O2 level, vascular responses and urinary 8-isoprostane and nitrite/nitrate concentration...
November 22, 2017: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/29160001/low-level-laser-therapy-induces-increased-viability-and-proliferation-in-isolated-cancer-cells
#2
C Kara, H Selamet, C Gökmenoğlu, N Kara
OBJECTIVES: Low level laser therapy (LLLT), which stimulates natural biological processes in the application region, is frequently used in dental treatments. The aim of our study was to evaluate the effects of LLLT which could activate precancerous cells or increase existing cancerous tissue in case of clinically undetectable situations. MATERIALS AND METHODS: Saos-2 osteoblast-like osteosarcoma cells and A549 human lung carcinoma cells were used. Twenty-four hours after preparation of cell culture plates, laser irradiation was performed 1, 2 and 3 times according to the test groups using Nd:YAG laser with the power output 0...
November 20, 2017: Cell Proliferation
https://www.readbyqxmd.com/read/29159807/experimental-investigation-of-gafchromic-%C3%A2-ebt3-intrinsic-energy-dependence-with-kilovoltage-x-rays-137-cs-and-60-co
#3
Cliff G Hammer, Benjamin Saul Rosen, Jessica M Fagerstrom, Wesley S Culberson, Larry A DeWerd
PURPOSE: To determine experimentally the intrinsic energy response, kbq , of EBT3 GafChromic(®) radiochromic film with kilovoltage x-rays,(137) Cs, and (60) Co in therapeutic and diagnostic dose ranges through direct measurement with an accompanying mathematical approach to describe the physical processes involved. METHODS: EBT3 film was irradiated to known doses using (60) Co, (137) Cs, and 13 NIST-matched kilovoltage x-ray beams. Seven dose levels, ranging from 57 to 7002 mGy, were chosen for this work...
November 21, 2017: Medical Physics
https://www.readbyqxmd.com/read/29159515/the-effect-of-low-level-laser-therapy-660%C3%A2-nm-on-the-gene-expression-involved-in-tissue-repair
#4
Stheace Kelly Fernandes Szezerbaty, Rodrigo Franco de Oliveira, Deise A A Pires-Oliveira, Cristina Pacheco Soares, Daniele Sartori, Regina Célia Poli-Frederico
The effect of low-level laser therapy (LLLT) on the healing of skin lesions has been evaluated in many studies; however, the molecular mechanisms involved in the biostimulatory effects resulting from this treatment need to be better understood. The paper aims to analyze the effects of LLLT (660 nm) at doses of 1 and 5 J/cm(2) on cell viability and expression of vascular endothelial growth factor (VEGF) and interleukin (IL6) genes in L929 fibroblast cells. The dose-response curve was performed with the GaInAlAs (660 nm) laser-treated cells at energy rates of 1 and 5 J/cm(2)...
November 20, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29156346/abcg2-mediated-suppression-of-chlorin-e6-accumulation-and-photodynamic-therapy-efficiency-in-glioblastoma-cell-lines-can-be-reversed-by-ko143
#5
Sara A Abdel Gaber, Patricia Müller, Wolfgang Zimmermann, Dirk Hüttenberger, Rainer Wittig, Mahmoud H Abdel Kader, Herbert Stepp
BACKGROUND: Photodynamic therapy (PDT) of malignant brain tumors is a promising adjunct to standard treatment, especially if tumor stem cells thought to be responsible for tumor progression and therapy resistance were also susceptible to this kind of treatment. However, some photosensitizers have been reported to be substrates of ABCG2, one of the membrane transporters mediating resistance to chemotherapy. Here we investigate, whether inhibition of ABCG2 can restore sensitivity to photosensitizer chlorin e6-mediated PDT...
October 28, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29154796/treatment-of-cancer-by-low-intensity-laser-radiation-therapy
#6
REVIEW
Sahar E Abo-Neima
Cancer treatment is one of the main challenges that face the scientific centers all over the world. The cancer incidence percentage increases year after year. The most used treatment for cancer is chemotherapy which is an application of systemic cytotoxic drug inside the patient. There are two main problems in chemotherapy that the cytotoxic drug is given systematically and cannot be localized in the tumor region in most cases that lead to killing the cancer cells as well as normal cells; and that cause the chemotherapy side effects like anemia, decrease in all blood cells count and platelets, nausea, vomiting, diarrhea, hair and nails loss and may cause a kind of blood toxicity...
November 14, 2017: Progress in Biophysics and Molecular Biology
https://www.readbyqxmd.com/read/29153978/the-endometria-of-women-with-endometriosis-exhibit-dysfunctional-expression-of-complement-regulatory-proteins-during-the-mid-secretory-phase
#7
Wilder A Palomino, Chandrakant Tayade, Felipe Argandoña, Luigi Devoto, Steven L Young, Bruce A Lessey
The control of complement activation within embryo-endometrium environment is critical for embryo survival. Cell evasion from complement attack requires interaction of complement regulatory proteins (CRPs) with cell adhesion αvβ3 integrin. We aim to compare the expression of CRPs in endometria of women with and without endometriosis and to examine the molecular interaction of decay accelerating factor (DAF) with αvβ3 integrin. Endometrial expression of Membrane cofactor protein (CD46), Decay accelerating factor (DAF), Membrane attack complex inhibitory factor (CD59) and β3 integrin subunit were determined through menstrual cycle by immunohistochemistry...
October 27, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/29153517/rapid-species-and-subspecies-specific-level-classification-and-identification-of-lactobacillus-casei-group-members-using-maldi-biotyper-combined-with-clinprotools
#8
Chien-Hsun Huang, Lina Huang
Using common taxonomic methods such as 16S rDNA sequencing and physiological and biochemical analysis to identify members of the Lactobacillus casei group (LCG) is time-consuming, expensive and inaccurate. In this study, we applied matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) to rapid discriminate LCG strains by creating an analytical in-house database (IHDB) and to develop a classification model for subspecies-level differentiation based on MS biomarkers using ClinProTools bioinformatics software (Bruker Daltonics, Billerica, MA)...
November 15, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29150016/low-level-laser-therapy-may-reduce-postoperative-pain-levels-after-root-canal-retreatment-in-patients-with-low-preoperative-pain-levels
#9
Romina Brignardello-Petersen
No abstract text is available yet for this article.
November 11, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/29138594/prevention-and-treatment-of-acute-and-chronic-radiodermatitis
#10
Sophie Seité, René-Jean Bensadoun, Jean-Michel Mazer
More than half the number of patients with cancer, who are treated with radiotherapy, will have radiodermatitis at some point during their treatment. Radiodermatitis either occurs early on in the treatment period or appears months or up to several years later. Acute radiodermatitis is a burn injury that varies in severity according to both treatment and inherent patient factors. Most acute radiodermatitis reactions resolve after several weeks but some reactions persist and can cause complications. Late-onset radiodermatitis is characterized by telangiectasia that forms on atrophic and fragile skin...
2017: Breast Cancer: Targets and Therapy
https://www.readbyqxmd.com/read/29137787/ultrasound-impact-on-whey-protein-concentrate-pectin-complexes-and-in-the-o-w-emulsions-with-low-oil-soybean-content-stabilization
#11
Kivia M Albano, Vânia R Nicoletti
Consumers' preference for products with reduced levels of fat increased in the last years. Proteins and polysaccharides have an important role due to their functional and interaction properties because, when combined in ratios and pH of higher potential for electrostatic interactions they may act as emulsifiers or stabilizers. This study evaluated the ultrasound impact on the electrostatic interaction between pectin (PEC) and whey protein concentrate (WPC) at different WPC:PEC ratios (1:1 to 5:1), and its effect on the emulsification and stability of emulsions formulated with WPC:PEC blends (1:1, 4:1) at low soybean oil contents (5 to 15%)...
March 2018: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/29136417/occupational-exposure-to-inhalable-manganese-at-german-workplaces
#12
Benjamin Kendzia, Rainer Van Gelder, Tobias Schwank, Cornelia Hagemann, Wolfgang Zschiesche, Thomas Behrens, Tobias Weiss, Thomas Brüning, Beate Pesch
Due to mounting evidence of neurotoxic effects of manganese (Mn) already at low concentrations, occupational exposure limits (OELs) have been adopted. We analyzed 5771 personal measurements of inhalable manganese (Mn) together with information on sampling conditions and job tasks from the German exposure database Messdaten zur Exposition gegenüber Gefahrstoffen am Arbeitsplatz (MEGA) to assess exposure levels in welders and other occupations between 1989 and 2015. Geometric means (GMs) of exposure to Mn were estimated for various occupational settings adjusted for 2-h sampling duration and analytical method, centered at 2009...
November 10, 2017: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/29134402/modification-in-oxidative-processes-in-muscle-tissues-exposed-to-laser-and-light-emitting-diode-radiation
#13
Victor A Monich, Anna P Bavrina, Svetlana L Malinovskaya
Exposure of living tissues to high-intensity red or near-infrared light can produce the oxidative stress effects both in the target zone and adjacent ones. The protein oxidative modification (POM) products can be used as reliable and early markers of oxidative stress. The contents of modified proteins in the investigated specimens can be evaluated by the 2,4-dinitrophenylhydrazine assay (the DNPH assay). Low-intensity red light is able to decrease the activity of oxidative processes and the DNPH assay data about the POM products in the biological tissues could show both an oxidative stress level and an efficiency of physical agent protection against the oxidative processes...
November 13, 2017: Lasers in Medical Science
https://www.readbyqxmd.com/read/29133966/effect-of-low-level-laser-therapy-on-fracture-healing-in-rabbits
#14
Fahimeh Kamali Sarvestani, Nasrin Salehi Dehno, Seifollah Dehghani Nazhvani, Mohammad Hadi Bagheri, Soheila Abbasi, Yasaman Khademolhosseini, Elham Gorji
Background and aims: The purpose of this study was to investigate the effect of low-level laser therapy (LLLT) on radial bone fracture gap healing in a rabbit model. Materials Subjects and Methods: Thirty male white New Zealand rabbits under general anesthesia had a 3mm slice of radial bone surgically removed. Fifteen rabbits were treated by 830 nm laser at 4 J/cm(2) and 15 were used as non-treated controls. Callus development was assessed by X-ray and radiographs every 7 days for 3 weeks...
September 30, 2017: Laser Therapy
https://www.readbyqxmd.com/read/29133965/evaluation-of-adjunctive-effect-of-low-level-laser-therapy-on-pain-swelling-and-trismus-after-surgical-removal-of-impacted-lower-third-molar-a-double-blind-randomized-clinical-trial
#15
Farrokh Farhadi, Hosein Eslami, Alireza Majidi, Vahid Fakhrzadeh, Milad Ghanizadeh, Sahar KhademNeghad
Background and Aim: Wisdom teeth remains impacted in the jaw due to several reasons and surgery of impacted wisdom teeth is one of the most common surgeries in dental clinics. Pain, swelling and trismus are the common complications after this surgery which affect quality of life. In articles, various methods are introduced to control immediate inflammatory-response associated with third-molar surgery. The aim of this study is to evaluate the adjunctive effect of low-level laser Therapy on pain, swelling and trismus after surgical removal of impacted lower third molar...
September 30, 2017: Laser Therapy
https://www.readbyqxmd.com/read/29131717/in-vitro-effects-of-high-intensity-laser-photobiomodulation-on-equine-bone-marrow-derived-mesenchymal-stem-cell-viability-and-cytokine-expression
#16
Frances J Peat, Aimee C Colbath, Lori M Bentsen, Laurie R Goodrich, Melissa R King
OBJECTIVE: This study aimed to examine the influence of neodymium-doped yttrium aluminum garnet (Nd:YAG) laser irradiation on equine bone marrow-derived mesenchymal stem cell (MSC) viability, proliferation, and cytokine expression in vitro. BACKGROUND: Photobiomodulation of cells using monochromatic light is a technique designed to influence cellular processes. Previous studies have shown dose-dependent effects of low-level laser irradiation on cell proliferation and cytokine expression in a range of cell types and species...
November 13, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29131194/elimination-of-self-mode-locking-pulses-in-high-power-continuous-wave-yb-doped-fiber-lasers-with-external-feedback
#17
Haiyang Xu, Man Jiang, Pu Zhou, Guomin Zhao, Xijia Gu
Sustained self-pulsing and self-mode-locking (SML) are detrimental to the performance of continuous-wave (CW) fiber lasers. We demonstrate an all-fiber method to eliminate SML pulsing by employing a low-reflectivity fiber Bragg grating (FBG) outside of a laser cavity to provide feedback. A narrow-bandwidth FBG is used to form an external cavity with the output coupler FBG, which suppresses the SML up to a certain output power level, at which point, the laser emission linewidth is still within the bandwidth of the FBG...
November 10, 2017: Applied Optics
https://www.readbyqxmd.com/read/29130447/only-lasers-can-be-used-for-low-level-laser-therapy
#18
Sergey Vladimirovich Moskvin
The question of lasers' exclusivity, as well as the degree of influence of special properties of low-intensity laser illumination (LILI), such as coherence, polarity and monochromaticity, on the effectiveness of low level laser therapy (LLLT) continues to cause arguments. The study analyzes publications from 1973 to 2016, in which laser and conventional light sources are compared, and the following conclusions are drawn. First, there are a lot of publications with incorrect comparison or unfounded statements...
December 2017: BioMedicine
https://www.readbyqxmd.com/read/29129931/mapping-functional-diversity-from-remotely-sensed-morphological-and-physiological-forest-traits
#19
Fabian D Schneider, Felix Morsdorf, Bernhard Schmid, Owen L Petchey, Andreas Hueni, David S Schimel, Michael E Schaepman
Assessing functional diversity from space can help predict productivity and stability of forest ecosystems at global scale using biodiversity-ecosystem functioning relationships. We present a new spatially continuous method to map regional patterns of tree functional diversity using combined laser scanning and imaging spectroscopy. The method does not require prior taxonomic information and integrates variation in plant functional traits between and within plant species. We compare our method with leaf-level field measurements and species-level plot inventory data and find reasonable agreement...
November 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/29128883/a-systematic-review-and-meta-analysis-of-the-effect-of-low-level-laser-therapy-lllt-on-chemotherapy-induced-oral-mucositis-in-pediatric-and-young-patients
#20
REVIEW
Mengxue He, Binghua Zhang, Nanping Shen, Na Wu, Jiwen Sun
Oral mucositis is one of the most frequent complications after chemotherapy, occurring in approximately 52 to 80% of children receiving treatment for cancer. Recently, it has been suggested that the use of low-energy laser could reduce the grade of oral mucositis and alleviate the symptoms. In 2014, Multinational Association of Supportive Care in Cancer/International Society of Oral Oncology has recommended low-level laser therapy in prevention of mucositis for hematopoietic stem cell transplantation patients because of its beneficial effects in majority of recent studies...
November 11, 2017: European Journal of Pediatrics
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