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Search on : Iodine [Words]
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[PMID]: 29524893
[Au] Autor:Hao Z; Yin Y; Wang J; Cao D; Liu J
[Ad] Address:State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P. O. Box 2871, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
[Ti] Title:Formation of organobromine and organoiodine compounds by engineered TiO nanoparticle-induced photohalogenation of dissolved organic matter in environmental waters.
[So] Source:Sci Total Environ;631-632:158-168, 2018 Mar 07.
[Is] ISSN:1879-1026
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:There are increasing concerns about the adverse effects of released engineered nanoparticles and photochemically formed organohalogen compounds (OHCs) on human health and the environment. Herein, we report that titanium dioxide nanoparticles (TiO NPs) can photocatalytically halogenate dissolved organic matter (DOM) to form a large number of organobromine compounds (OBCs) and organoiodine compounds (OICs), as characterized by negative ion electrospray ionization coupled with Fourier transform ion cyclotron resonance mass spectrometry. Compared with no OHCs produced in control samples in darkness and/or without TiO NPs under sunlight irradiation, various OBCs and OICs were detected in freshwater and seawater under sunlight irradiation for 12h and 24h even in the presence of 1mgL TiO NPs, indicating the photocatalytic roles TiO NPs played in DOM halogenation. Furthermore, TiO NPs could result in the photodegradation of newly formed OHCs, as evidenced by the intensity and the number of some OHCs decreased with reaction time. In addition, many TiO NP-induced OBCs contained two or three bromine atoms, and/or nitrogen and sulfur elements, belonging to lignin-like, tannin-like, unsaturated hydrocarbon and aliphatic compounds. While the OICs were primarily contained one iodine, and very few consisted of nitrogen and sulfur elements, most were lignin-like and tannin-like compounds. Finally, the OBCs in freshwater were found to be formed mainly via a substitution reaction or addition reaction and were accompanied by other reactions such as photooxidation, while the OBCs in seawater and OICs were formed primarily via substitution reactions. Given the abundance of produced OHCs and their toxicity, our findings call for further studies on the exact structure and toxicity of the formed OHCs, taking account the TiO NP-induced DOM photohalogenation in aquatic environments during the evaluation of the environmental effects of engineered TiO NPs.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180310
[Lr] Last revision date:180310
[St] Status:Publisher

  2 / 102914 MEDLINE  
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[PMID]: 29523971
[Au] Autor:Küpper FC; Miller EP; Andrews SJ; Hughes C; Carpenter LJ; Meyer-Klaucke W; Toyama C; Muramatsu Y; Feiters MC; Carrano CJ
[Ad] Address:Oceanlab, University of Aberdeen, Main Street, Newburgh, AB41 6AA, Scotland, UK. fkuepper@abdn.ac.uk.
[Ti] Title:Emission of volatile halogenated compounds, speciation and localization of bromine and iodine in the brown algal genome model Ectocarpus siliculosus.
[So] Source:J Biol Inorg Chem;, 2018 Mar 09.
[Is] ISSN:1432-1327
[Cp] Country of publication:Germany
[La] Language:eng
[Ab] Abstract:This study explores key features of bromine and iodine metabolism in the filamentous brown alga and genomics model Ectocarpus siliculosus. Both elements are accumulated in Ectocarpus, albeit at much lower concentration factors (2-3 orders of magnitude for iodine, and < 1 order of magnitude for bromine) than e.g. in the kelp Laminaria digitata. Iodide competitively reduces the accumulation of bromide. Both iodide and bromide are accumulated in the cell wall (apoplast) of Ectocarpus, with minor amounts of bromine also detectable in the cytosol. Ectocarpus emits a range of volatile halogenated compounds, the most prominent of which by far is methyl iodide. Interestingly, biosynthesis of this compound cannot be accounted for by vanadium haloperoxidase since the latter have not been found to catalyze direct halogenation of an unactivated methyl group or hydrocarbon so a methyl halide transferase-type production mechanism is proposed.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180310
[Lr] Last revision date:180310
[St] Status:Publisher
[do] DOI:10.1007/s00775-018-1539-7

  3 / 102914 MEDLINE  
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[PMID]: 29522992
[Au] Autor:Rampazzo V; Ribeiro LF; Santos PM; Ferreira MCM; Bona E; Maciel GM; Haminiuk CWI
[Ad] Address:Universidade Federal do Paraná, Programa de Pós-Graduação em Engenharia de Alimentos (PPGEAL), Curitiba, CEP (81531-980), PR, Brazil.
[Ti] Title:Multi-block analysis coupled with GC-FID and ATR-MIR for the evaluation of thermal degradation in vegetable oils.
[So] Source:J Chromatogr B Analyt Technol Biomed Life Sci;1081-1082:118-125, 2018 Feb 26.
[Is] ISSN:1873-376X
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:The effect of heating in twenty-four different oil samples was evaluated via iodine value (IV), gas chromatography (GC) and mid-infrared (MIR) analyses. Common components and specific weights analysis (CCSWA) was applied to distribute the samples according to their most relevant characteristics, thereby revealing the influence of heating on composition. Instrumental analysis indicated a high amount of beneficial fatty acids, such as alpha-linolenic acid, in less exploited oils such as chia oil. This oil can present nutritional damage when subjected to high temperatures and is thus less recommended for frying. Conversely, oils containing high amounts of linoleic acid, such as almond and nut oils, as well as those containing equivalent amounts of alpha-linolenic and linoleic acids, such as golden flaxseed and flaxseed oils, displayed greater resistance to temperature. The 3008/cm band exhibited greater intensity in oils with a higher degree of unsaturation, such as chia and linseed oils, a phenomenon mainly influenced by the presence of linoleic and alpha-linolenic fatty acids. After heating, there was a decrease in the intensity of this band. The main parameter discriminating the tested oil samples based on CCSWA was the degree of unsaturation. Overall, the employed statistical method was effective in analyzing the data obtained via the applied techniques, revealing the influence of each assessed parameter.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180309
[Lr] Last revision date:180309
[St] Status:Publisher

  4 / 102914 MEDLINE  
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[PMID]: 29522502
[Au] Autor:Uchiyama K; Miyashita M; Tanishima Y; Maeda S; Sato H; Yoshikawa J; Watanabe S; Shibata M; Ohhira S; Kobashi G
[Ad] Address:Laboratory of International Environmental Health, Center for International Cooperation, Dokkyo Medical University, 880 Kitakobayashi, Mibu-machi, Shimotsuga-gun 321-0293, Tochigi, Japan. koji-u@dokkyomed.ac.jp.
[Ti] Title:Use of Iodine-131 to Tellurium-132 Ratios for Assessing the Relationships between Human Inhaled Radioactivity and Environmental Monitoring after the Accident in Fukushima.
[So] Source:Int J Environ Res Public Health;15(3), 2018 Mar 09.
[Is] ISSN:1660-4601
[Cp] Country of publication:Switzerland
[La] Language:eng
[Ab] Abstract:Significant differences in findings were seen between the intake amounts of iodine-131 that were derived from direct measurements and the estimated intake from environmental monitoring data at the Fukushima accident. To clarify these discrepancies, we have investigated the iodine-131 and tellurium-132 body burdens of five human subjects, who after being exposed to a radioactive plume, underwent 21.5 h whole body counter measurements at Fukui Prefectural Hospital, so clear intake scenario and thyroid counter measurement data were available. To determine the iodine-131 and tellurium-132 body burdens, we introduced a new method of whole body counter calibration composed of a self-consistent approach with the time-dependent correction efficiency factors concept. The ratios of iodine-131 to tellurium-132, ranging from 0.96 ± 0.05 to 2.29 ± 0.38, were consistent with results of the environmental measurements. The 24 h iodine uptake values ranging from 12.1-16.0% were within euthyroid range in Japanese people. These results suggest, even if the relatively low thyroid iodine uptake in the Japanese population was taken into consideration, that there is no doubt about the consistency between direct measurements and environmental monitoring data. Adequate intake scenario is suggested to be principally important to estimate the inhaled radioactivity in areas in or around nuclear accidents.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180309
[Lr] Last revision date:180309
[St] Status:In-Data-Review

  5 / 102914 MEDLINE  
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[PMID]: 29446579
[Au] Autor:Savchenkov MF; Efimova NV; Manueva RS; Nikolaeva LA; Shin NS
[Ti] Title:[Thyroid gland pathology in children population exposed to the combination of iodine deficiency and fluoride pollution of environment].
[So] Source:Gig Sanit;95(12):1201-5, 2016.
[Is] ISSN:0016-9900
[Cp] Country of publication:Russia (Federation)
[La] Language:rus
[Ab] Abstract:The article presents results of study of the impact of iodine deficiency and technogenic fluoride on the state of the thyroid gland in children. On the example of two districts of the city of Bratsk there were executed dynamic investigations (2002 and 2012), including the estimation of the pollution of ambient air and soil by fluorine compounds, levels of iodine intake by the body, the clinical examination of children aged from 5 to 7 years d and interviewing of their parents. In the course of the medical examination there were executed: physical examination by the pediatrician, endocrinologist, ultrasound examination of the thyroid gland, the determination both of serum hormone content by radioimmunoassay and urinary excretion offluorine and iodine. Concentrations of hydrogen fluoride and a solidfluorides in ambient air led to the accumulation offluoride ion in the soil. The iodine entering with drinking water and food, was established to provide only 37.5-50% of the daily requirement of iodine. Increased fluoride ion content in urine and milk teeth in children is associated with the concentrations of the fluorine-containing pollutants in the ambient air and soil. The fluoride pollution against the background of the natural iodine deficiency was established to increase the frequency of functional and morphological disorders of the thyroid gland in children.
[Mh] MeSH terms primary: Environmental Pollution
Iodine
Thyroid Diseases
[Mh] MeSH terms secundary: Child
Environmental Monitoring/methods
Environmental Pollution/adverse effects
Environmental Pollution/analysis
Environmental Pollution/prevention & control
Environmental Pollution/statistics & numerical data
Female
Fluorine Compounds/adverse effects
Fluorine Compounds/analysis
Health Status Disparities
Humans
Iodine/analysis
Iodine/deficiency
Male
Public Health/methods
Public Health/statistics & numerical data
Siberia/epidemiology
Thyroid Diseases/diagnosis
Thyroid Diseases/epidemiology
Thyroid Diseases/etiology
Thyroid Diseases/prevention & control
[Pt] Publication type:JOURNAL ARTICLE
[Nm] Name of substance:0 (Fluorine Compounds); 9679TC07X4 (Iodine)
[Em] Entry month:1803
[Cu] Class update date: 180309
[Lr] Last revision date:180309
[Js] Journal subset:IM
[Da] Date of entry for processing:180216
[St] Status:MEDLINE

  6 / 102914 MEDLINE  
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[PMID]: 29522169
[Au] Autor:Amano I; Takatsuru Y; Khairinisa MA; Kokubo M; Haijima A; Koibuchi N
[Ad] Address:Department of Integrative Physiology, Gunma University Graduate School of Medicine.
[Ti] Title:Effects of mild perinatal hypothyroidism on cognitive function of adult male offspring.
[So] Source:Endocrinology;, 2018 Mar 07.
[Is] ISSN:1945-7170
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:Mild perinatal hypothyroidism may result from inadequate iodine intake, insufficient treatment of congenital hypothyroidism, or exposure to endocrine disrupting chemicals. Because thyroid hormone is critical for brain development, severe hypothyroidism that is untreated in infancy causes irreversible cretinism. Milder hypothyroidism may also affect cognitive development; however, the effects of mild and/or moderate hypothyroidism on brain development are not fully understood. In this study, we examined the behavior of adult male mice rendered mildly hypothyroid during the perinatal period using low-dose propylthiouracil (PTU). PTU was administered through drinking water (5 or 50 ppm) from gestational day 14 to postnatal day 21. Cognitive performance, studied by a novel object in-location test (OLT), was impaired in PTU-treated mice on postnatal week 8. These results suggest that, although the hypothyroidism was mild, it partially impaired cognitive function. We next measured the concentration of neurotransmitters (glutamate, gamma amino butyric acid, and glycine) in the hippocampus using in vivo microdialysis during OLT. We found that the concentrations of neurotransmitters, particularly glutamate and glycine, decreased in PTU-treated mice. The expression levels of N-methyl-d-aspartate receptor subunits, which are profound regulators of glutamate neurotransmission and memory function, also decreased in PTU-treated mice. These data indicate that mild perinatal hypothyroidism causes cognitive disorders in adult offspring. Such disorders may be partially induced secondary to decreased concentrations of neurotransmitters and receptor expression.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180309
[Lr] Last revision date:180309
[St] Status:Publisher
[do] DOI:10.1210/en.2017-03125

  7 / 102914 MEDLINE  
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[PMID]: 29519419
[Au] Autor:Papadimitriou A; Ketikidis I; Stathopoulou MK; Banti CN; Papachristodoulou C; Zoumpoulakis L; Agathopoulos S; Vagenas GV; Hadjikakou SK
[Ad] Address:Department of Chemistry, University of Ioannina, 45110 Ioannina, Greece; Department of Materials Science and Engineering, University of Ioannina, Greece.
[Ti] Title:Innovative material containing the natural product curcumin, with enhanced antimicrobial properties for active packaging.
[So] Source:Mater Sci Eng C Mater Biol Appl;84:118-122, 2018 Mar 01.
[Is] ISSN:1873-0191
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:Curcumin (Curc) reacts with zinc di­iodine (ZnI ) in 2:1molar ratio in the presence of an excess of a base triethylamine ((CH CH ) N) in methanol (CH OH) solution towards the amorphous solid material of formula [ZnI (Curc) ] (1). The complex was characterized by melting point (m.p.), Fourier Transform-Infra Red (FT-IR) and Nuclear Magnetic Resonance of hydrogen nucleus ( H NMR) spectroscopy. The formula of 1 was determined by X-ray fluorescence (XRF) analysis. The retention of the structure in solution was confirmed by H NMR spectroscopy. The antimicrobial activity of the complex has been studied against the bacteria Pseudomonas aeruginosa (PAO1). The Minimum Inhibitory Concentrations (MIC) of the compounds 1 and Curc against P. aeruginosa (PAO1) are: 71.3µΜ (75.3µg/mL) for [ZnI (Curc) ] and 339µM (125µg/mL) for Curc, respectively. Moreover, the antimicrobial activity of the new material which was diffused in polystyrene against biofilm formed by PAO1 was also calculated.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180309
[Lr] Last revision date:180309
[St] Status:In-Process

  8 / 102914 MEDLINE  
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[PMID]: 29519400
[Au] Autor:Harbron RW; Ainsbury EA; Bouffler SD; Tanner RJ; Pearce MS; Eakins JS
[Ad] Address:Institute of Health and Society, Newcastle University, Royal Victoria Infirmary, Queen Victoria Road, Newcastle-upon-Tyne NE1 4LP, UK; NIHR Health Protection Research Unit in Chemical and Radiation Threats and Hazards, Newcastle University, UK. Electronic address: richard.harbron@ncl.ac.uk.
[Ti] Title:The impact of iodinated contrast media on intravascular and extravascular absorbed doses in X-ray imaging: A microdosimetric analysis.
[So] Source:Phys Med;46:140-147, 2018 Feb.
[Is] ISSN:1724-191X
[Cp] Country of publication:Italy
[La] Language:eng
[Ab] Abstract:Studies suggest iodinated contrast media (ICM) may increase organ dose and blood cell DNA damage for a given X-ray exposure. The impact of ICM on dose/damage to extravascular cells and cancer risks is unclear. METHODS: We used Monte Carlo modelling to investigate the microscopic distribution of absorbed dose outside the lumen of arteries, capillaries and interstitial fluids containing blood and various concentrations of iodine. Models were irradiated with four X-ray spectra representing clinical procedures. RESULTS: For the artery model, The average dose enhancement factors (DEF) to blood were 1.70, 2.38, 7.38, and 12.34 for mass concentrations of iodine in blood (ρ I) of 5, 10, 50 and 100 mg/ml, respectively, compared to 0 mg/ml. Average DEFs were reduced to 1.26, 1.51, 3.48 and 5.56, respectively, in the first micrometre of the vessel wall, falling to 1.01, 1.02, 1.06 and 1.09 at 40-50 µm from the lumen edge. For the capillary models, DEF for extravascular tissues was on average 48% lower than DEF for the whole model, including capillaries. A similar situation was observed for the interstitial model, with DEF to the cell nucleus being 35% lower than DEF for the whole model. CONCLUSIONS: While ICM may modify the absorbed doses from diagnostic X-ray examinations, the effect is smaller than suggested by assays of circulating blood cells or blood dose enhancement. Conversely, the potentially large increase in dose to the endothelium of blood vessels means that macroscopic organ doses may underestimate the risk of radiation induced cardiovascular disease for ICM-enhanced exposures.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180309
[Lr] Last revision date:180309
[St] Status:In-Process

  9 / 102914 MEDLINE  
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[PMID]: 29519397
[Au] Autor:Lubis LE; Craig LA; Bosmans H; Soejoko DS
[Ad] Address:Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok 16424, Indonesia. Electronic address: lukmanda.evan@sci.ui.ac.id.
[Ti] Title:Task-based phantom evaluation of cardiac catheterization imaging modes.
[So] Source:Phys Med;46:114-123, 2018 Feb.
[Is] ISSN:1724-191X
[Cp] Country of publication:Italy
[La] Language:eng
[Ab] Abstract:This study aimed to quantify the dose and quality of the preprogrammed imaging modes on two cardiac angiography devices (Philips Allura FD10 Clarity and Allura FD10) using a task-specific in-house phantom, and to discuss the appropriateness of the pre-programmed settings. A Figure of Merit (FOM), defined as the squared Signal Difference to Noise Ratio (SDNR) divided by Entrance Surface Air Kerma (ESAK), was calculated for phantom inserts with different sizes and concentrations of iodine, as well as tin foils. For the Allura FD10 Clarity device, the low dose fluoroscopic mode was found to be very dose efficient, while the available ciné modes should only be used for cases with high demand for contrast and temporal resolutions. For both devices, the basic beam spectrum of the low dose fluoroscopic mode should be explored for use on other imaging modes. Ciné modes for the Allura FD10 device differ only by their spatial resolution characteristics and have almost identical dose per frame. This study also found that tin may not be a suitable replacement for iodine for research purposes due to mismatching SDNR. The number of recommendations formulated for these two devices suggests that comparative dose and image quality tests of all routinely used imaging modes should be an obligatory part of the physicists' acceptance testing.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180309
[Lr] Last revision date:180309
[St] Status:In-Process

  10 / 102914 MEDLINE  
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[PMID]: 29518987
[Au] Autor:Voutchkova DD; Hansen B; Ernstsen V; Kristiansen SM
[Ad] Address:Department of Geography, National University of Singapore, 1 Arts Link, Kent Ridge, Singapore 117570, Singapore. geoddv@nus.edu.sg.
[Ti] Title:Nationwide Drinking Water Sampling Campaign for Exposure Assessments in Denmark.
[So] Source:Int J Environ Res Public Health;15(3), 2018 Mar 07.
[Is] ISSN:1660-4601
[Cp] Country of publication:Switzerland
[La] Language:eng
[Ab] Abstract:Nationwide sampling campaign of treated drinking water of groundwater origin was designed and implemented in Denmark in 2013. The main purpose of the sampling was to obtain data on the spatial variation of iodine concentration and speciation in treated drinking water, which was supplied to the majority of the Danish population. This data was to be used in future exposure and epidemiologic studies. The water supply sector (83 companies, owning 144 waterworks throughout Denmark) was involved actively in the planning and implementation process, which reduced significantly the cost and duration of data collection. The dataset resulting from this collaboration covers not only iodine species (I , IO3 , TI), but also major elements and parameters (pH, electrical conductivity, DOC, TC, TN, F , Cl , NO3 , SO4 , Ca²âº, Mg²âº, K⁺, Na⁺) and a long list of trace elements ( = 66). The water samples represent 144 waterworks abstracting about 45% of the annual Danish groundwater abstraction for drinking water purposes, which supply about 2.5 million Danes (45% of all Danish residents). This technical note presents the design, implementation, and limitations of such a sampling design in detail in order (1) to facilitate the future use of this dataset, (2) to inform future replication studies, or (3) to provide an example for other researchers.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1803
[Cu] Class update date: 180309
[Lr] Last revision date:180309
[St] Status:In-Data-Review


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