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https://www.readbyqxmd.com/read/27617054/electromagnetic-and-thermal-simulations-of-human-neurons-for-sar-applications
#1
Felipe Perez, Gilbert Millholland, Seshasai Vamsi Krishna Peddinti, Ashok Kumar Thella, James Rizkalla, Paul Salama, Maher Rizkalla, Jorge Morisaki, Maher E Rizkalla
The impact of the electromagnetic waves (EM) on human neurons (HN) has been under investigation for decades, in efforts to understand the impact of cell phones (radiation) on human health, or radiation absorption by HN for medical diagnosis and treatment. Research issues including the wave frequency, power intensity, reflections and scattering, and penetration depths are of important considerations to be incorporated into the research study. In this study, computer simulation for the EM exposure to HN was studied for the purpose of determining the upper limits of the electric and magnetic field intensities, power consumption, reflections and transmissions, and the change in temperature resulting from the power absorption by human neurons...
August 2016: Journal of Biomedical Science and Engineering
https://www.readbyqxmd.com/read/27127458/deconstructing-brain-derived-neurotrophic-factor-actions-in-adult-brain-circuits-to-bridge-an-existing-informational-gap-in-neuro-cell-biology
#2
REVIEW
Heather Bowling, Aditi Bhattacharya, Eric Klann, Moses V Chao
Brain-derived neurotrophic factor (BDNF) plays an important role in neurodevelopment, synaptic plasticity, learning and memory, and in preventing neurodegeneration. Despite decades of investigations into downstream signaling cascades and changes in cellular processes, the mechanisms of how BDNF reshapes circuits in vivo remain unclear. This informational gap partly arises from the fact that the bulk of studies into the molecular actions of BDNF have been performed in dissociated neuronal cultures, while the majority of studies on synaptic plasticity, learning and memory were performed in acute brain slices or in vivo...
March 2016: Neural Regeneration Research
https://www.readbyqxmd.com/read/26552307/-the-influence-of-progenitor-neuro-cells-supernatant-on-the-lympho-cytes-cytotoxic-function-in-rats-with-glioma
#3
L D Liubich, N I Lisyany
The impact of rat neurogenic progenitor cells supernatant (RPNS) on the cytotoxic function of lymphocytes in rats under conditions of physiological norm and experimentally modeled tumor (brain glioma strain 101.8) was studied. The research was carried out in animals with inoculated tumor without RPNS injection and with different regimes of RPNS injection (thrice repeated from 5th to 10th day after glioma inoculation as well as 1 week and 1 month before tumor inoculation). Comparison groups included rats without glioma who triple injected with RPNS; and intact animals (control)...
2015: Fiziolohichnyĭ Zhurnal
https://www.readbyqxmd.com/read/24942330/cytotoxic-genotoxic-and-neurotoxic-effects-of-mg-pb-and-fe-on-pheochromocytoma-pc-12-cells
#4
Talia Sanders, Yi-Ming Liu, Paul B Tchounwou
Metals such as lead (Pb), magnesium (Mg), and iron (Fe) are ubiquitous in the environment as a result of natural occurrence and anthropogenic activities. Although Mg, Fe, and others are considered essential elements, high level of exposure has been associated with severe adverse health effects including cardiovascular, hematological, nephrotoxic, hepatotoxic, and neurologic abnormalities in humans. In the present study we hypothesized that Mg, Pb, and Fe are cytotoxic, genotoxic and neurotoxic, and their toxicity is mediated through oxidative stress and alteration in protein expression...
December 2015: Environmental Toxicology
https://www.readbyqxmd.com/read/22974291/diagnosis-of-dopamine-in-brain-neuro-cell-using-a-nafion-immobilized-carbon-electrode
#5
Suw Young Ly, Park, Dong Won
Nafion immobilized onto a graphite pencil carbon electrode (NPE) was used to a voltammetric assay of dopamine. The optimum analytical conditions of 150 Hz frequency, 150 mV amplitude, -2.0 V accumulation potential and 15 mV increment potential were obtained. The SW working range was attained to 0.0-80.0 ugL-1 and the CV range of 0.0-90 mgL-1. The statistic relative standard deviation of the 10.0mgL-1 dopamine was 0.041 (n = 20) at the optimum conditions. The analytical detection limit (S/N) was attained to 0...
September 10, 2012: Medicinal Chemistry
https://www.readbyqxmd.com/read/18059620/effects-of-exercise-on-brain-function-role-of-free-radicals
#6
REVIEW
Zsolt Radak, Shuzo Kumagai, Albert W Taylor, Hisashi Naito, Sataro Goto
Reactive oxygen species (ROS) are continuously generated during aerobic metabolism. Certain levels of ROS, which could be dependent on the type of cell, cell age, history of ROS exposure, etc., could facilitate specific cell functions. Indeed, ROS stimulate a number of stress responses and activate gene expression for a wide range of proteins. It is well known that increased levels of ROS are involved in the aging process and the pathogenesis of a number of neurodegenerative diseases. Because of the enhanced sensitivity of the central nervous system to ROS, it is especially important to maintain the normal redox state in different types of neuro cells...
October 2007: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/17241552/-effect-of-bitumen-fume-on-neurotransmitter-and-ultrastructure-in-mice-brain
#7
Hai-Ling Li, Xiang-Yun Guo, San-Wei Feng, Chang-Hai Liu
OBJECTIVE: To observe the effects of bitumen fume on neurotransmitter and ultrastructure of mice brain and to investigate the toxicity of bitumen fume on nerve system of mice brain. METHODS: The experimental mice were forced to inhale the bitumen fume at different exposure level and in different time periods. The contents of the three transmitters dopamine (DA), norepinephrine (NE), 5-hydroxytryptamine (5-HT) in mice brain were measured by the fluorescence meanwhile ultrastructure of mice brain was observed by electronic microscope...
December 2006: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/17039777/-the-design-and-synthesis-of-2-aminothiazole-derivatives-and-their-inhibitory-activity-on-apoptosis
#8
Feng-chao Jiang, Chong-yun Cheng
AIM: To investigate the inhibitory effect of 2-aminothiazole derivatives on Neuro-cell apoptosis and QSAR. METHODS: The 2-aminothiazole derivatives were designed and synthesized based on the lead compound of PFT-alpha, the protective action of the compounds I and II against and their inhibitory action on PC12 cell apoptosis induced by H2O2 were determined by MTT method and FCM method. The QSAR equation was obtained from Cerius2-QSAR+ module. RESULTS: Eleven novel 2-aminothiazole Schiff base compounds (II) have been designed and synthesized...
August 2006: Yao Xue Xue Bao, Acta Pharmaceutica Sinica
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