36 research outputs found

    Erratum to: Treadmill exercise alters ecstasy- induced long- term potentiation disruption in the hippocampus of male rats (Metabolic Brain Disease, (2017), 32, 5, (1603-1607), 10.1007/s11011-017-0046-9)

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    In the original publication of the article, author name Masoumeh Asadbegi was incorrectly written as Masoumeh Asadbeigi. The authors regret the oversight. © 2017, Springer Science+Business Media, LLC

    Evaluation of annual staff doses and radiation shielding efficiencies of thyroid shield and lead apron during preparation and administration of 131 I, 81 Kr, and 99m Tc-Labeled radiopharmaceuticals

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    Nuclear medicine technicians would receive unavoidable exposures during the preparation and administration of radiopharmaceuticals. Based on the staff dose monitoring, the dose reduction efficiencies of the radiation protection shields and the need to implement additional strategies to reduce the staff doses could be evaluated. In this study, medical staff doses during the preparation and administration of Tc-99 m, I-131, and Kr-81 radiopharmaceuticals were evaluated. The dose reduction efficiencies of the lead apron and thyroid shield were also investigated. GR-207 thermoluminescent dosimeter (TLD) chips were used for quantifying the medical staff doses. The occupational dose magnitudes were determined in five organs at risk including eye lens, thyroid, fingers, chest, and gonads. TLDs were located under and over the protective shields for evaluating the dose reduction efficiencies of the lead apron and thyroid shield. The occupational doses were normalized to the activities used in the working shifts. During preparation and injection of Tc-99 m radiopharmaceutical, the average annual doses were higher in the chest (4.49 mGy) and eye lenses (4 mGy). For I-131 radiopharmaceutical, the average annual doses of the point-finger (15.8 mGy) and eye lenses (1.23 mGy) were significantly higher than other organs. During the preparation and administration of Kr-81, the average annual doses of the point-finger (0.65 mGy) and chest (0.44 mGy) were higher. The significant dose reductions were achieved using the lead apron and thyroid shield. The radiation protection shields and minimum contact with the radioactive sources, including patients, are recommended to reduce the staff doses. © 2021 Journal of Medical Signals & Sensors Published by Wolters Kluwer-Medknow

    Treadmill exercise attenuates 3,4-methylenedioxymethamphetamine-induced memory impairment through a decrease apoptosis in male rat hippocampus

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    3,4-methylenedioxymethamphetamine (MDMA) leads to apoptosis in the hippocampus with consequent induction of learning and memory impairment. In this study, we have investigated the effects of treadmill exercise on memory in relation to apoptosis and oxidative stress in the hippocampi of MDMA-treated rats. Male Wistar rats received multiple intraperitoneal (IP) injections of MDMA (10 mg/kg) and exercised for one month on a treadmill (simultaneously or asynchronously with MDMA). We assessed memory function with the Morris water maze (MWM) test. Lipid peroxidation (LPO) and expression of caspase 3, Bax, and Bcl-2 were examined by the thiobarbituric acid assay (TBA) and western blot, respectively. Our results showed that asynchronous treadmill exercise could significantly improve MDMA-induced memory impairment in the MWM test. Caspase 3 expression decreased in the exercise group compared to the MDMA group. Although MDMA treatment caused an increase in the Bax/Bcl-2 ratio, the treadmill exercise reduced this ratio. Simultaneous exercise caused a reduction in lipid peroxidation in the hippocampus. This data suggests that treadmill exercise can be a useful strategy for treating memory impairment in persons with neurodegenerative disease and stimulant drug users. © 2017 Wiley Periodicals, Inc. © 2017 Wiley Periodicals, Inc

    Treadmill exercise attenuates 3,4-methylenedioxymethamphetamine-induced memory impairment through a decrease apoptosis in male rat hippocampus

    No full text
    3,4-methylenedioxymethamphetamine (MDMA) leads to apoptosis in the hippocampus with consequent induction of learning and memory impairment. In this study, we have investigated the effects of treadmill exercise on memory in relation to apoptosis and oxidative stress in the hippocampi of MDMA-treated rats. Male Wistar rats received multiple intraperitoneal (IP) injections of MDMA (10 mg/kg) and exercised for one month on a treadmill (simultaneously or asynchronously with MDMA). We assessed memory function with the Morris water maze (MWM) test. Lipid peroxidation (LPO) and expression of caspase 3, Bax, and Bcl-2 were examined by the thiobarbituric acid assay (TBA) and western blot, respectively. Our results showed that asynchronous treadmill exercise could significantly improve MDMA-induced memory impairment in the MWM test. Caspase 3 expression decreased in the exercise group compared to the MDMA group. Although MDMA treatment caused an increase in the Bax/Bcl-2 ratio, the treadmill exercise reduced this ratio. Simultaneous exercise caused a reduction in lipid peroxidation in the hippocampus. This data suggests that treadmill exercise can be a useful strategy for treating memory impairment in persons with neurodegenerative disease and stimulant drug users. © 2017 Wiley Periodicals, Inc. © 2017 Wiley Periodicals, Inc

    Online-CPD-Coupled Large-Eddy Simulation of Pulverized-Coal Pyrolysis in a Hot Turbulent Nitrogen Jet

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    This is an Accepted Manuscript of an article published by Taylor & Francis in Combustion Science and Technology on 21/12/2016, available online: https://www.tandfonline.com/doi/full/10.1080/00102202.2016.1193498Engineering and Physical Sciences Research Council (EPSRC) (UK); National Basic Research Program of China; National Natural Science Foundation of China; China Scholarship Counci
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