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Catherine Nisse, Romuald Tagne-Fotso, Mike Howsam, Camille Richeval, Laurence Labat, Ariane Leroyer
BACKGROUND: The assessment of human chemical risks related to occupational or environmental exposure to pollutants requires the use of both accurate exposure indicators and reference values. The objective of this study was to evaluate the blood and urinary levels of various metals and metalloids in a sample of adults aged 20-59 years of the general population of Northern France, a formerly heavily industrialised area that retains some industrial activity. METHODS: A cross-sectional study was conducted between 2008 and 2010, enrolling 2000 residents of Northern France...
October 3, 2016: International Journal of Hygiene and Environmental Health
Mamer S Rosario, Norio Yamamoto, Katsuhiro Hayashi, Akihiko Takeuchi, Shinji Miwa, Hiroyuki Inatani, Takashi Higuchi, Hiroyuki Tsuchiya
BACKGROUND: Infected schwannoma has been reported, this being one of the four cases published in the literature. Infected schwannoma has proven to be a tough diagnostic challenge to the treating tumor surgeon, mimicking infectious entities and most essentially, a malignant tumor. CASE PRESENTATION: The authors report the case of a 64-year-old male with a soft tissue mass in his right gluteal area that presented initially with right leg pain, then later with signs of inflammation on the tumor area...
December 7, 2016: World Journal of Surgical Oncology
Francesco Sgarangella, Giuseppe Bitti, Maria Caterina Suelzu, Pietro Desini, Patrizia Piras, Gianuario Fiori, Maurizio Cossu, Giannina Chessa
OBJECTIVES: to assess concentration levels of dioxins, PCBs, and chemical elements in sheep milk produced in areas close to the Italian contaminated site (CS) located in the North-West of Sardinia (Southern Italy), named «Aree industriali di Porto Torres e discarica di Calancoi» (i.e., industrial areas of Porto Torres and landfill of Calancoi). DESIGN: monitoring plan of environmental contaminants on zootechnical productions based on analysis of dioxins, PCBs, heavy metals (Cd, Hg, Pb), and other elements (As, Be, Cr, Ni, Tl , Zn) in sheep bulk milk...
November 2016: Epidemiologia e Prevenzione
Navneet Sharma, Himanshu Ojha, Dharam Pal Pathak, Rajeev Goel, Rakesh Kumar Sharma
AIMS: p-Tertbutylcalix [4]arene loaded nanoemulsion has been designed, characterized and evaluated for skin decontamination of radionuclides of interest in nuclear and radiological emergencies. Further, nanoemulsion was evaluated for Ex-vivo complexation, skin permeation, interaction and cytodermal toxicity. MATERIALS AND METHODS: Ex-vivo skin complexation studies were conducted using High-resolution sector field inductively coupled plasma mass spectroscopy (HR-SF-ICPMS)...
November 15, 2016: Life Sciences
Neamat Jaafarzadeh Haghighi Fard, Ahmad Zare Javid, Maryam Ravanbakhsh, Zahra Ramezani, Mehdi Ahmadi, Kambiz Ahmadi Angali, Shirin Ardeshirzadeh
Heavy metals with high bioaccumulation capacity are considered as important contaminants and may be available in high concentrations in environment and biota samples. The main aim of this study was to determine the concentration of nickel and thallium in Cynoglossus arel fish in Musa estuary. Sixty-seven fish samples were collected from Musa estuary during five intervals of 15 days in summer 2013. After biometric measurements, the concentrations of nickel and thallium were measured by graphite furnace atomic absorption spectrophotometer...
November 14, 2016: Environmental Science and Pollution Research International
Lourdes Infantes, Rosa M Claramunt, Dionisia Sanz, Ibon Alkorta, José Elguero
The introduction of poly(1H-pyrazolyl)borate anions, better known as scorpionates, as negatively charged ligands for a great diversity of metal cations has had a tremendous influence in coordination chemistry. The structures of two salts of tetrakispyrazolylborate, namely [tetrakis(3-phenyl-1H-pyrazol-1-yl)borato]thallium(I), [Tl(C36H28BN8)], and catena-poly[potassium-[μ2-tetrakis(3-cyclopropyl-1H-pyrazol-1-yl)borato]], [K(C24H28BN8)]n, have been determined at 296 K in the monoclinic P21/c and C2/c space groups, respectively...
November 1, 2016: Acta Crystallographica. Section C, Structural Chemistry
Eric R Sirianni, Daniel C Cummins, Glenn P A Yap, Klaus H Theopold
Scorpionate (or trispyrazolylborate) ligands have seen much structural variation due to the relative ease of modifying their electronic and steric effects. Second-generation scorpionates were created by increasing the bulk in the 3-position of the pyrazole (pz) ring. A new class of third-generation scorpionates was obtained by modifying the remaining boron substituent. A series of thallium(I) and cobalt(II) complexes of the ferrocenyltris(3-R-pyrazolyl)borate ligand [FcTp(R); R = isopropyl ((i)Pr) or tert-butyl ((t)Bu)] have been synthesized in order to expand the range of redox-active third-generation scorpionates...
November 1, 2016: Acta Crystallographica. Section C, Structural Chemistry
Kiyoshi Fujisawa, Masaya Shimizu, Robert K Szilagyi
Tris(pyrazolyl)borate (scorpionate) ligands can be considered as the most prolific ligands in contemporary coordination chemistry due to the availability of various steric and electronic substituents at the pyrazolyl rings that allow fine-tuning of the open-coordination site for metal centres. The thallium(I) complexes of anionic tridentate-chelating scorpionate ligands, namely [tris(3-mesityl-5-methyl-1H-pyrazol-1-yl-κN(2))hydroborato]thallium(I) monohydrate, [Tl(C39H46BN6)]·H2O, (I), and [bis(3-mesityl-5-methyl-1H-pyrazol-1-yl-κN(2))(5-mesityl-3-methyl-1H-pyrazol-1-yl-κN(2))hydroborato]thallium(I), [Tl(C39H46BN6)], (II), show a {Tl(I)N3} coordination, with average Tl(I)-N bond lengths of 2...
November 1, 2016: Acta Crystallographica. Section C, Structural Chemistry
Yang Du, Yaohu Lei, Xin Liu, Jianheng Huang, Zhigang Zhao, Jinchuan Guo, Ji Li, Hanben Niu
Grating interferometry is advantageous over conventional x-ray absorption imaging because it enables the detection of samples constituted by low atomic number elements (low-Z materials). Therefore, it has a potential application in biological science and medical diagnostics. The grating interferometry has some critical optics components such as absorption gratings which are conventionally manufactured by the lithography, electroplating, and molding (LIGA) technique and employing gold as the absorbent material in it...
December 7, 2016: Physics in Medicine and Biology
Prassana K Dadi, Nicholas Catin Vierra, Emily L Days, Matthew Dickerson, Paige N Vinson, C David Weaver, David A Jacobson
The two-pore-domain potassium (K2P) channel TREK-2 serves to modulate plasma membrane potential in dorsal root ganglia c-fiber nociceptors, which tunes electrical excitability and nociception. Thus, TREK-2 activators are considered a potential therapeutic target for treating pain; however, there are currently no selective pharmacological tools for TREK-2 channels. Here we report the identification of the first TREK-2 selective activators using a high-throughput fluorescence-based thallium (Tl(+)) flux screen (HTS)...
November 2, 2016: ACS Chemical Neuroscience
Xiaoliu Huangfu, Chengxue Ma, Jun Ma, Qiang He, Chun Yang, Jin Jiang, Yaan Wang, Zhengsong Wu
Thallium (Tl) is an element of high toxicity and significant accumulation in human body. There is an urgent need for the development of appropriate strategies for trace Tl removal in drinking water treatment plants. In this study, the efficiency and mechanism of trace Tl (0.5 μg/L) removal by conventional coagulation enhanced by nanosized manganese dioxide (nMnO2) were explored in simulated water and two representative surface waters (a river water and a reservoir water obtained from Northeast China). Experimental results showed that nMnO2 significantly improve Tl(I) removal from selected waters...
October 24, 2016: Chemosphere
Bozena Karbowska
Thallium is released into the biosphere from both natural and anthropogenic sources. It is generally present in the environment at low levels; however, human activity has greatly increased its content. Atmospheric emission and deposition from industrial sources have resulted in increased concentrations of thallium in the vicinity of mineral smelters and coal-burning facilities. Increased levels of thallium are found in vegetables, fruit and farm animals. Thallium is toxic even at very low concentrations and tends to accumulate in the environment once it enters the food chain...
December 0: Environmental Monitoring and Assessment
Sarah Keller, Ryota Inai, Shuhei Sato, Akihiro Tada, Gerhard Adam, Jin Yamamura, Susumu Kanazawa
OBJECTIVE: The radiologic differential diagnosis of giant cell tumors (GCTs) is challenging because there is a risk of misdiagnosis of GCTs as malignant lesions such as atypically presenting osteosarcomas (OSs). This study aims to assess the feasibility of (201)Tl scintigraphy for the differential diagnosis of GCT and atypical OS. MATERIALS AND METHODS: Thallium-201 scintigraphy scans obtained between January 2006 and October 2015 of patients with histologically proven GCT (23 patients [male-to-female ratio, 15:8]; median age, 33...
October 11, 2016: AJR. American Journal of Roentgenology
Wassim W Ayass, Tamás Fodor, Zhengguo Lin, Rachelle M Smith, Xiaolin Xing, Khaled Abdallah, Imre Tóth, László Zékány, Magda Pascual-Borràs, Antonio Rodríguez-Fortea, Josep M Poblet, Linyuan Fan, Jie Cao, Bineta Keita, Matthias S Ullrich, Ulrich Kortz
We have synthesized and structurally characterized the first discrete thallium-containing polyoxometalate, [Tl2{B-β-SiW8O30(OH)}2](12-) (1). Polyanion 1 was characterized in the solid-state and shown to be solution-stable by (203/205)Tl NMR, electrospray ionization mass spectrometry, and electrochemical studies. The antibacterial activity of 1 was also investigated.
October 5, 2016: Inorganic Chemistry
Mateusz P Karwowski, Suzette A Morman, Geoffrey S Plumlee, Terence Law, Mark Kellogg, Alan D Woolf
Though most childhood lead exposure in the USA results from ingestion of lead-based paint dust, non-paint sources are increasingly implicated. We present interdisciplinary findings from and policy implications of a case of elevated blood lead (13-18 mcg/dL, reference level <5 mcg/dL) in a 9-month-old infant, linked to a non-commercial Malaysian folk diaper powder. Analyses showed the powder contains 62 % lead by weight (primarily lead oxide) and elevated antimony [1000 parts per million (ppm)], arsenic (55 ppm), bismuth (110 ppm), and thallium (31 ppm)...
October 4, 2016: Environmental Geochemistry and Health
Hiroshi Kuroda, Yoshiyuki Mukai, Shuhei Nishiyama, Takayuki Takeshita, Maki Tateyama, Atsushi Takeda, Masashi Aoki
Thallium intoxication was reported in cases with accidental ingestion, suicide attempt, and criminal adulteration. Reported cases were mostly one-time ingestion, therefore, the clinical course of divisional ingestion has not been fully known. Here, we report a case with two-step thallium intoxication manifesting as tardily accelerated neurologic deterioration. A 16-year-old adolescent was cryptically poisoned with thallium sulfate twice at an interval of 52days. After the first ingestion, neurologic symptoms including visual loss, myalgia, and weakness in legs developed about 40days after the development of acute gastrointestinal symptoms and alopecia...
September 28, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
Xuexia Huang, Ning Li, Qihang Wu, Jianyou Long, Dinggui Luo, Ping Zhang, Yan Yao, Xiaowu Huang, Dongmei Li, Yayin Lu, Jianfeng Liang
The objective of this paper is to assess the influence of irritating paddy fields with acid mine drainage containing thallium (Tl) to rice plant-soil system and potential health risks for local residents. Vertical distribution of Tl, pH, organic matter (OM), and cation exchange capacity (CEC) in 24 paddy soil profiles around Yunfu pyrite mine area was investigated. Rice plant samples were collected from the corresponding soil sampling site. The results showed that Tl concentrations in paddy soils at 0-60 cm depth range from 3...
September 24, 2016: Environmental Science and Pollution Research International
C Cazorla, S G MacLeod, D Errandonea, K A Munro, M I McMahon, C Popescu
We present a combined theoretical and experimental study of the high-pressure behavior of thallium. X-ray diffraction experiments have been carried out at room temperature (RT) up to 125 GPa using diamond-anvil cells (DACs), nearly doubling the pressure range of previous experiments. We have confirmed the hcp-fcc transition at 3.5 GPa and determined that the fcc structure remains stable up to the highest pressure attained in the experiments. In addition, HP-HT experiments have been performed up to 8 GPa and 700 K by using a combination of XRD and a resistively heated DAC...
November 9, 2016: Journal of Physics. Condensed Matter: An Institute of Physics Journal
Carla Roselli, Donatella Desideri, Maria Assunta Meli, Ivan Fagiolino, Laura Feduzi
Essential and toxic elements were determined by inductively coupled plasma-atomic emission spectrometry (ICP-AES), mass spectrometry (MS), and atomic absorption (AS) in meat of 14 migratory birds originating from central and northern Europe to provide baseline data regarding game meat consumed in central Italy. In all samples analyzed, cobalt (Co) and chromium (Cr) (total) levels were <0.326 mg/kgww. For nonessential or toxic elements, arsenic (As), barium (Ba), cadmium (Cd), stannous (Sn), thallium (Tl), tellurium (Te), titanium (Ti), cerium (Ce), lantanium (La), and uranium (U) concentrations were <0...
2016: Journal of Toxicology and Environmental Health. Part A
Radosław Mazur, Monika Sadowska, Łucja Kowalewska, Agnieszka Abratowska, Hazem M Kalaji, Agnieszka Mostowska, Maciej Garstka, Beata Krasnodębska-Ostręga
BACKGROUND: Heavy metal exposure affect plant productivity by interfering, directly and indirectly, with photosynthetic reactions. The toxic effect of heavy metals on photosynthetic reactions has been reported in wide-ranging studies, however there is paucity of data in the literature concerning thallium (Tl) toxicity. Thallium is ubiquitous natural trace element and is considered the most toxic of heavy metals; however, some plant species, such as white mustard (Sinapis alba L.) are able to accumulate thallium at very high concentrations...
2016: BMC Plant Biology
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