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https://www.readbyqxmd.com/read/29452767/uptake-and-distribution-of-organo-iodine-in-deep-sea-corals
#1
Nancy G Prouty, E Brendan Roark, Leslye M Mohon, Ching-Chih Chang
Understanding iodine concentration, transport, and bioavailability is essential in evaluating iodine's impact to the environment and its effectiveness as an environmental biogeotracer. While iodine and its radionuclides have proven to be important tracers in geologic and biologic studies, little is known about transport of this element to the deep sea and subsequent uptake in deep-sea coral habitats. Results presented here on deep-sea black coral iodine speciation and iodine isotope variability provides key information on iodine behavior in natural and anthropogenic environments, and its geochemical pathway in the Gulf of Mexico...
February 13, 2018: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/29452341/betadine-and-breast-implants
#2
Mark L Jewell, William P Adams
In the fourth quarter of 2017, the US FDA reviewed and approved a request by one of the breast implant manufacturers for a change in the Directions for Use (DFU) that removed warnings regarding the use of Betadine (povidone-iodine [PI] 10% solution, 1% available iodine [Purdue Frederick Company, Stamford, CT], also available in generic formulations [Aplicare, Inc., Meriden, CT]). Previously, in 2000, there were concerns by the FDA that PI would degrade the silicone elastomer shell. This change in the DFU represents an important advance that will benefit patients through the permitted use of PI to reduce the risk of bacterial contamination of implant surfaces...
February 14, 2018: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29451348/synthesis-of-biaryls-via-hypervalent-iodine-tethered-sigmatropic-rearrangement
#3
Mitsuki Hori, Jing-Dong Guo, Tomoyuki Yanagi, Keisuke Nogi, Takahiro Sasamori, Hideki Yorimitsu
Metal-free dehydrogenative coupling of aryliodanes with phenols to afford 2-hydroxy-2'-iodobiaryls has been developed. This reaction proceeds via ligand exchange on the hypervalent iodine atom, followed by [3,3] sigmatropic rearrangement, to realize exclusive regioselectivity. This coupling, in combination with in situ oxidation by mCPBA, facilitates the convenient conversion of iodoarenes into the desired biaryls. The obtained biaryls have convertible iodo and hydroxy groups in close proximity, and are thus synthetically useful, as exemplified by the controlled syntheses of π-expanded furans and a substituted [5] helicene...
February 16, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29450988/salso-bromo-iodine-thermal-water-a-nonpharmacological-alternative-treatment-for-postnasal-drip-related-cough-in-children-with-upper-respiratory-tract-infections
#4
I La Mantia, G Ciprandi, A Varricchio, F Cupido, C Andaloro
Postnasal drip (PND)-related cough is a very common symptom in patients with upper respiratory tract infections (URTIs). At present, there is not a standard treatment for postnasal drip and postnasal drip-related cough. The aim of this pilot study was to evaluate the efficacy of a specific salso-bromo-iodine thermal water containing hyaluronic acid and grapefruit seed extract (SBI-H-GSE) comparing it with a normal saline solution in children with URTIs who refer PND-related symptoms. The study was randomized, single-blind, and controlled...
January 2018: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/29450909/nature-of-hydration-shells-of-a-polyoxy-anion-with-a-large-cationic-centre-the-case-of-iodate-ion-in-water
#5
Bikramjit Sharma, Amalendu Chandra
The structural nature of the solvation shells of an iodate ion, which is known to be a polyoxy-anion with a large cationic centre, is investigated by means of Born-Oppenheimer molecular dynamics (BOMD) simulations using BLYP and the dispersion corrected BLYP-D3 functionals. The iodate ion is found to have two distinct solvation regions around the positively charged iodine (iodine solvation shell or ISS) and the negatively charged oxygens (oxygen solvation shell or OSS). We have looked at the spatial, orientational, and hydrogen bond distributions of water in the two solvation regions...
February 15, 2018: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/29450434/direct-sequential-c-h-iodination-organoyl-thiolation-for-the-benzenoid-a-ring-modification-of-quinonoid-deactivated-systems-a-new-protocol-for-potent-trypanocidal-quinones
#6
Guilherme A M Jardim, Willian X C Oliveira, Rossimiriam P de Freitas, Rubem F S Menna-Barreto, Thaissa L Silva, Marilia O F Goulart, Eufrânio N da Silva Júnior
We report a sequential C-H iodination/organoyl-thiolation of naphthoquinones and their relevant trypanocidal activity. Under a combination of AgSR with a copper source, sulfur-substituted benzenoid quinones were prepared in high yields (generally >90%). This provides an efficient and general method for preparing A-ring modified naphthoquinoidal systems, recognized as a challenge in quinone chemistry.
February 16, 2018: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/29449184/relation-of-overactive-bladder-with-motor-symptoms-and-dopamine-transporter-imaging-in-drug-na%C3%A3-ve-parkinson-s-disease
#7
Yasunori Mito, Ichiro Yabe, Hiroaki Yaguchi, Toshiki Takei, Satoshi Terae, Yasutaka Tajima
OBJECTIVES: The aim of the present study was to determine the relation of urinary dysfunction with motor symptoms and nigrostriatal neuron loss in drug-naïve patients with Parkinson's disease (PD). We therefore examined the relation of overactive bladder (OAB) symptoms with motor symptoms and striatal dopamine transporter (DAT) binding measured by [123-Iodine]-fluoropropyl-2beta-carbomethoxy-3beta-(4-iodophenylnortropane) dopamine transporter single-photon emission computed tomography ( 123 I-FP-CIT SPECT)...
February 9, 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29448964/utility-of-rituximab-treatment-for-exophthalmos-myxedema-and-osteoarthropathy-syndrome-resistant-to-corticosteroids-due-to-graves-disease-a-case-report
#8
Aldo Ferreira-Hermosillo, Ruben Casados-V, Pedro Paúl-Gaytán, Victoria Mendoza-Zubieta
BACKGROUND: Exophthalmos, myxedema, and osteoarthropathy syndrome is a very rare condition that is associated with Graves' disease. The presence of dermopathy and the involvement of joint/bone tissues indicate that it seems to be related with the severity of the autoimmune process. Owing to its low incidence, there is a lack of information regarding its treatment and clinical follow-up. Some cases improved after use of high doses of steroids; however, some patients do not respond to this treatment...
February 16, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29448210/iodate-and-nitrate-transformation-by-agrobacterium-rhizobium-related-strain-dvz35-isolated-from-contaminated-hanford-groundwater
#9
Brady D Lee, Joshua T Ellis, Alex Dodwell, Emalee E R Eisenhauer, Danielle L Saunders, M Hope Lee
Nitrate and radioiodine ( 129 I) contamination is widespread in groundwater underneath the Central Plateau of the Hanford Site. 129 I, a byproduct of nuclear fission, is of concern due to a 15.7 million year half-life, and toxicity. The Hanford 200 West Area contains plumes covering 4.3 km 2 with average 129 I concentrations of 3.5 pCi/L. Iodate accounts for 70.6% of the iodine present and organo-iodine and iodide make up 25.8% and 3.6%, respectively. Nitrate plumes encompassing the 129 I plumes have a surface area of 16 km 2 averaging 130 mg/L...
February 6, 2018: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29447075/propionibacterium-acnes-has-low-susceptibility-to-chlorhexidine-digluconate
#10
Keisuke Nakase, Hanae Fukushima, Tomoko Yukawa, Hidemasa Nakaminami, Takeshi Fujii, Norihisa Noguchi
BACKGROUND: The skin bacterium Propionibacterium acnes has been reported to be responsible for surgical site infections (SSIs). Skin disinfection before surgery therefore is of the utmost importance in the prevention of SSIs caused by skin bacteria. METHODS: We assessed the susceptibility of clinical isolates of two skin bacteria, P. acnes and Staphylococcus epidermidis, to disinfectants. RESULTS: The range of chlorhexidine digluconate (CHG) minimum inhibitory concentrations (MICs) for P...
February 15, 2018: Surgical Infections
https://www.readbyqxmd.com/read/29446785/effects-of-salso-bromo-iodine-thermal-water-in-children-suffering-from-otitis-media-with-effusion-a-randomized-controlled-pilot-study
#11
I La Mantia, C Andaloro
BACKGROUND: Otitis media with effusion (OME) is an ear disorder defined by the presence of fluid in the middle ear without signs or symptoms of acute infection. The aim of this randomised and controlled pilot study was to evaluate whether the treatment with a watery salsobromo- iodine solution, administered by nasal douche, could induce ear healing better than isotonic saline in children with OME. METHODS: The study was randomized, single-blind, and controlled. Study group (40 children) was treated with salso-bromo-iodine thermal water solution and Control group (40 children) was treated with isotonic saline; both compounds were administered by nasal nebulization with Rinowash nasal douche twice/day for 10 days a month for 3 consecutive months...
January 2018: La Clinica Terapeutica
https://www.readbyqxmd.com/read/29446319/dual-energy-ct-iodine-maps-as-an-alternative-quantitative-imaging-biomarker-to-abdominal-ct-perfusion-determination-of-appropriate-trigger-delays-for-acquisition-using-bolus-tracking
#12
Stephan Skornitzke, Franziska Fritz, Philipp Mayer, Marco Koell, Jens Hansen, Gregor Pahn, Thilo Hackert, Hans-Ulrich Kauczor, Wolfram Stiller
OBJECTIVE: Quantitative evaluation of different bolus-tracking trigger delays for acquisition of dual-energy (DE) computed tomography (CT) iodine maps as an alternative to CT perfusion. METHODS: Prior to this retrospective analysis of prospectively acquired data, DECT perfusion sequences were dynamically acquired in 22 patients with pancreatic carcinoma using dual-source CT at 80/140kV p with tin filtration. After deformable motion-correction, perfusion maps of blood flow (BF) were calculated from 80kVp image series of DECT, and iodine maps were calculated for each of the 34 DECT acquisitions per patient...
February 15, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29446082/development-of-a-dual-energy-computed-tomography-quality-control-program-characterization-of-scanner-response-and-definition-of-relevant-parameters-for-a-fast-kvp-switching-dect-system
#13
Jessica L Nute, Megan C Jacobsen, Wolfgang Stefan, Wei Wei, Dianna D Cody
PURPOSE: A prototype QC phantom system and analysis process were developed to characterize the spectral capabilities of a fast kV-switching dual-energy computed tomography (DECT) scanner. This work addresses the current lack of quantitative oversight for this technology, with the goal of identifying relevant scan parameters and test metrics instrumental to the development of a dual-energy quality control (DEQC). METHODS: A prototype elliptical phantom (effective diameter: 35 cm) was designed with multiple material inserts for DECT imaging...
February 15, 2018: Medical Physics
https://www.readbyqxmd.com/read/29446011/continuously-sustained-elimination-of-iodine-deficiency-a-quarter-of-a-century-success-in-the-islamic-republic-of-iran
#14
H Delshad, P Mirmiran, Z Abdollahi, F Salehi, F Azizi
BACKGROUND: Iodine deficiency and related disorders were very common in Iran prior to 1996, when universal salt iodization (USI) was implemented and in 2000 Iran was declared iodine deficiency disorders (IDD) free. The aim of this study was to evaluate the adequacy of iodine intake by Iranian households in all 30 provinces of Iran, a quarter of a century after the intervention. METHODS: A total of 18,000 school-aged children (8-10 years with mean 8.7 ± 1 year) were included in this study...
February 14, 2018: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/29445901/geology-and-geochemistry-of-the-atacama-desert
#15
J Tapia, R González, B Townley, V Oliveros, F Álvarez, G Aguilar, A Menzies, M Calderón
The Atacama Desert, the driest of its kind on Earth, hosts a number of unique geological and geochemical features that make it unlike any other environment on the planet. Considering its location on the western border of South America, between 17 and 28 °S, its climate has been characterized as arid to hyperarid for at least the past 10 million years. Notably dry climatic conditions of the Atacama Desert have been related to uplift of the Andes and are believed to have played an important role in the development of the most distinctive features of this desert, including: (i) nitrates and iodine deposits in the Central Depression, (ii) secondary enrichment in porphyry copper deposits in the Precordillera, (iii) Li enrichment in salt flats of the Altiplano, and (iv) life in extreme habitats...
February 14, 2018: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/29445780/actinide-based-mofs-a-middle-ground-in-solution-and-solid-state-structural-motifs
#16
Ekaterina A Dolgopolova, Allison M Rice, Natalia B Shustova
In this review, we highlight how recent advances in the field of actinide structural chemistry of metal-organic frameworks (MOFs) could be utilized towards investigations relative to efficient nuclear waste administration, driven by the interest towards development of novel actinide-containing architectures as well as concerns regarding environmental pollution and nuclear waste storage. We attempt to perform a comprehensive analysis of more than 100 crystal structures of the existing An (U,Th)-based MOFs to establish a correlation between structural density and wt% of actinide and bridge structural motifs common for natural minerals with ones typically observed in the solution chemistry of actinides...
February 15, 2018: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29445473/graves-disease-coexisting-with-resistance-to-thyroid-hormone-a-rare-case
#17
Hongping Sun, Shuhang Xu, Shaofeng Xie, Wen Cao, Guofang Chen, Hongjie Di, Rendong Zheng, Xingjia Li, Xiaodong Mao, Chao Liu
A rare case of resistance to thyroid hormone (RTH) complicated with Graves' hyperthyroidism was reported. The management of this disease is similar to that of Graves' disease. Antithyroid drug therapy is the first choice, and iodine therapy and surgery are not recommended due to the possibility of severe hypothyroidism and enlargement of the pituitary gland.
February 2018: Clinical Case Reports
https://www.readbyqxmd.com/read/29444991/ozon-generation-during-high-voltage-leak-detection-fiction-or-reality
#18
Sophie Becker, Dr Volker Bickert, Kai Reimers, Dr Martin Becker
In order to further clarify if and how much Ozone is generated during HVLD and to identify measures to reduce the impact of Ozone generation on product quality a highly sensitive analytical system [4] was employed to investigate the generation of Ozone at different operational conditions of HVLD integrity testing. The analytical system is based on oxidation of Iodide ions in solution and identification of the Iodine formed by N, N-Diethyl-p-phenylendiamine (DPD) according to DIN 38403 [4].Sensitivity of the system was found suitable to detect Ozone levels as low as 0...
February 14, 2018: PDA Journal of Pharmaceutical Science and Technology
https://www.readbyqxmd.com/read/29444161/a-3d-anatomical-atlas-of-appendage-musculature-in-the-chelicerate-arthropod-limulus-polyphemus
#19
Russell D C Bicknell, Ada J Klinkhamer, Richard J Flavel, Stephen Wroe, John R Paterson
Limulus polyphemus, an archetypal chelicerate taxon, has interested both biological and paleontological researchers due to its unique suite of anatomical features and as a useful modern analogue for fossil arthropod groups. To assist the study and documentation of this iconic taxon, we present a 3D atlas on the appendage musculature, with specific focus on the muscles of the cephalothoracic appendages. As L. polyphemus appendage musculature has been the focus of extensive study, depicting the muscles in 3D will facilitate a more complete understanding thereof for future researchers...
2018: PloS One
https://www.readbyqxmd.com/read/29443852/chlorhexidine-antiseptic-irrigation-eradicates-staphylococcus-epidermidis-from-biofilm-an-in-vitro-study
#20
Kenneth Schmidt, Chris Estes, Alex McLaren, Mark J Spangehl
BACKGROUND: Antiseptic and antibacterial solutions used for intraoperative irrigation are intended to kill bacteria and thereby decrease the incidence of surgical site infections. It is unknown if the concentrations and exposure times of irrigation solutions commonly used for prophylaxis in clean cases (povidone-iodine 0.35% for 3 minutes) are effective against bacteria in biofilm that are present in implant infections. Currently, povidone-iodine (0.35%), chlorhexidine (0.05%), sodium hypochlorite (0...
March 2018: Clinical Orthopaedics and related Research
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