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https://www.readbyqxmd.com/read/28727988/environmental-exposures-and-pediatric-kidney-function-and-disease-a-systematic-review
#1
REVIEW
Laura Y Zheng, Alison P Sanders, Jeffrey M Saland, Robert O Wright, Manish Arora
BACKGROUND: Environmental chemical exposures have been implicated in pediatric kidney disease. No appraisal of the available evidence has been conducted on this topic. METHODS: We performed a systematic review of the epidemiologic studies that assessed association of environmental exposures with measures of kidney function and disease in pediatric populations. The search period went through July 2016. RESULTS: We found 50 studies that met the search criteria and were included in this systematic review...
July 17, 2017: Environmental Research
https://www.readbyqxmd.com/read/28716727/systematic-review-and-meta-analysis-links-autism-and-toxic-metals-and-highlights-the-impact-of-country-development-status-higher-blood-and-erythrocyte-levels-for-mercury-and-lead-and-higher-hair-antimony-cadmium-lead-and-mercury
#2
REVIEW
Amene Saghazadeh, Nima Rezaei
BACKGROUND: Autism spectrum disorder (ASD) is a heterogeneous neurodevelopmental disorder that affects cognitive and higher cognitive functions. Increasing prevalence of ASD and high rates of related comorbidities has caused serious health loss and placed an onerous burden on the supporting families, caregivers, and health care services. Heavy metals are among environmental factors that may contribute to ASD. However, due to inconsistencies across studies, it is still hard to explain the association between ASD and toxic metals...
July 14, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28697192/a-prototype-pet-spect-x-rays-scanner-dedicated-for-whole-body-small-animal-studies
#3
Maritina Rouchota, Maria Georgiou, Eleftherios Fysikopoulos, Eirini Fragogeorgi, Konstantinos Mikropoulos, Panagiotis Papadimitroulas, George Kagadis, George Loudos
OBJECTIVE: To present a prototype tri-modal imaging system, consisting of a single photon emission computed tomography (SPET), a positron emission tomography (PET), and a computed tomography (CT) subsystem, evaluated in planar mode. MATERIALS AND METHODS: The subsystems are mounted on a rotating gantry, so as to be able to allow tomographic imaging in the future. The system, designed and constructed by our group, allows whole body mouse imaging of competent performance and is currently, to the best of our knowledge, unequaled in a national and regional level...
July 12, 2017: Hellenic Journal of Nuclear Medicine
https://www.readbyqxmd.com/read/28693110/potential-effects-of-brevetoxins-and-toxic-elements-on-various-health-variables-in-kemp-s-ridley-lepidochelys-kempii-and-green-chelonia-mydas-sea-turtles-after-a-red-tide-bloom-event
#4
Justin R Perrault, Nicole I Stacy, Andreas F Lehner, Cody R Mott, Sarah Hirsch, Jonathan C Gorham, John P Buchweitz, Michael J Bresette, Catherine J Walsh
Natural biotoxins and anthropogenic toxicants pose a significant risk to sea turtle health. Documented effects of contaminants include potential disease progression and adverse impacts on development, immune function, and survival in these imperiled species. The shallow seagrass habitats of Florida's northwest coast (Big Bend) serve as an important developmental habitat for Kemp's ridley (Lepidochelys kempii) and green (Chelonia mydas) sea turtles; however, few studies have been conducted in this area. Our objectives were (1) to evaluate plasma analytes (mass, minimum straight carapace length, body condition index [BCI], fibropapilloma tumor score, lysozyme, superoxide dismutase, reactive oxygen/nitrogen species, plasma protein electrophoresis, cholesterol, and total solids) in Kemp's ridleys and green turtles and their correlation to brevetoxins that were released from a red tide bloom event from July-October 2014 in the Gulf of Mexico near Florida's Big Bend, and (2) to analyze red blood cells in Kemp's ridleys and green turtles for toxic elements (arsenic, cadmium, lead, mercury, selenium, thallium) with correlation to the measured plasma analytes...
July 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28692492/criteria-for-the-addition-of-prone-imaging-to-myocardial-perfusion-single-photon-emission-computed-tomography-for-inferior-wall
#5
Koji Nakaya, Masahisa Onoguchi, Yoshihiro Nishimura, Keisuke Kiso, Hideki Otsuka, Yoshifumi Nouno, Takayuki Shibutani, Eisuke Yasuda
OBJECTIVE: Myocardial perfusion single-photon emission computed tomography (SPECT) is occasionally suspected to generate images that represent either ischemia or infarction for the inferior wall [right coronary artery (RCA) disease] or attenuation artifacts because of the diaphragm. We often encounter this. The application of prone imaging is advantageous in the differentiation of RCA disease because of attenuation artifacts. If decreased accumulation of radioisotopes is observed at the site with either RCA disease or attenuation artifacts, then a criterion that enables the addition of prone imaging should be implemented...
July 7, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28689732/applying-preoperative-dipyridamole-thallium-201-scintigraphy-for-preventing-cardiac-mortality-and-complications-for-patients-with-secondary-hyperparathyroidism-undergoing-parathyroidectomy
#6
Shih-Min Yin, Fong-Fu Chou, Shao-Chun Wu, Shun-Yu Chi
BACKGROUND: To evaluate the value of preoperative dipyridamole thallium-201 scintigraphy for reducing cardiovascular complication in secondary hyperparathyroidism (SHPTH) patients. METHODS: Thallium scintigraphy was arranged for all dialysis patients who underwent parathyroidectomy from Jan 2011 to July 2015. Management of defects on thallium scintigraphy included cardiac catheterization and ultrasonography. Analysis includes 30-day mortality, morbidity and the predicting factors for thallium scintigraphy defect...
July 6, 2017: Asian Journal of Surgery
https://www.readbyqxmd.com/read/28678196/substituent-effects-on-the-stability-of-thallium-and-phosphorus-triple-bonds-a-density-functional-study
#7
Jia-Syun Lu, Ming-Chung Yang, Ming-Der Su
Three computational methods (M06-2X/Def2-TZVP, B3PW91/Def2-TZVP and B3LYP/LANL2DZ+dp) were used to study the effect of substitution on the potential energy surfaces of RTl≡PR (R = F, OH, H, CH₃, SiH₃, SiMe(SitBu₃)₂, SiiPrDis₂, Tbt (=C₆H₂-2,4,6-(CH(SiMe₃)₂)₃), and Ar* (=C₆H₃-2,6-(C₆H₂-2, 4,6-i-Pr₃)₂)). The theoretical results show that these triply bonded RTl≡PR compounds have a preference for a bent geometry (i.e., ∠R⎼Tl⎼P ≈ 180° and ∠Tl⎼P⎼R ≈ 120°). Two valence bond models are used to interpret the bonding character of the Tl≡P triple bond...
July 5, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28664481/comparison-of-conventional-and-cadmium-zinc-telluride-single-photon-emission-computed-tomography-for-analysis-of-thallium-201-myocardial-perfusion-imaging-an-exploratory-study-in-normal-databases-for-different-ethnicities
#8
Masaru Ishihara, Masahisa Onoguchi, Yasuyo Taniguchi, Takayuki Shibutani
The aim of this study was to clarify the differences in thallium-201-chloride (thallium-201) myocardial perfusion imaging (MPI) scans evaluated by conventional anger-type single-photon emission computed tomography (conventional SPECT) versus cadmium-zinc-telluride SPECT (CZT SPECT) imaging in normal databases for different ethnic groups. MPI scans from 81 consecutive Japanese patients were examined using conventional SPECT and CZT SPECT and analyzed with the pre-installed quantitative perfusion SPECT (QPS) software...
June 29, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28631939/a-high-throughput-screening-assay-for-nkcc1-cotransporter-using-nonradioactive-rubidium-flux-technology
#9
Sikander Gill, Rajwant Gill, Yang Wen, Thilo Enderle, Doris Roth, Dong Liang
A high-throughput screening (HTS) assay was developed for cotransporter, NKCC1, which is a potential target for the treatment of diverse disorders. This nonradioactive rubidium flux assay coupled with ion channel reader series provides a working screen for this target expressed in human embryonic kidney (HEK) cell line. An eightfold window of detection was achieved with the optimized assay. This new functional assay offered a robust working model for NKCC1 in determining reliable and concordant rank orders of the test compounds supporting its sensitivity and specificity...
May 2017: Assay and Drug Development Technologies
https://www.readbyqxmd.com/read/28620194/prognostic-value-of-olfactory-nerve-damage-measured-with-thallium-based-olfactory-imaging-in-patients-with-idiopathic-olfactory-dysfunction
#10
Hideaki Shiga, Junichi Taki, Koichi Okuda, Naoto Watanabe, Hisao Tonami, Hideaki Nakagawa, Seigo Kinuya, Takaki Miwa
Idiopathic olfactory disorder is resistant to treatment, and the recovery time is long. This study investigated the prognostic value of the migration of nasally administered thallium-201 to the olfactory bulb (thallium migration to the OB), a measure of olfactory nerve damage, in patients with idiopathic olfactory disorders. Twenty-four patients with idiopathic olfactory disorders were enrolled in the study (7 women and 17 men; aged 23-73 years). We retrospectively analyzed potential prognostic markers in subjects who underwent thallium-based olfactory imaging with the nasal administration of thallium-201 before conventional treatment with the Japanese herbal medicine tokishakuyakusan and compared those data with the prognosis...
June 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28607654/qualitative-thallium-urinary-assays-are-almost-as-valuable-as-quantitative-tests-implication-for-outpatient-settings-in-low-and-middle-income-countries
#11
Amir Ghaderi, Hamid Reza Banafshe, Soroor Khodabandehlo, Fateme Mehrzad, Omid Mehrpour, Reza Afshari
BACKGROUND: Thallium (Tl), lead and steroid exposures were reported as a result of street drug consumption such as heroin and cocaine. OBJECTIVE: This study aimed to compare the values of qualitative and quantitative assays for detecting Tl as an adulterant in opioid-like compound drug users. METHODS: This case-control study was conducted throughout a specified time bracket ranging from May 2015 to November 2015 in Imam Reza Hospital, Mashhad, Iran...
April 2017: Electronic Physician
https://www.readbyqxmd.com/read/28602195/a-portable-solution-cathode-glow-discharge-atomic-emission-spectrometer-for-the-rapid-determination-of-thallium-in-water-samples
#12
Wenchuan Zu, Yu Wang, Xiaotao Yang, Cong Liu
A novel and high performance method for rapid determination of thallium in water samples was established by using a portable solution cathode glow discharger with a fiber-optical spectrometer. The operating conditions including the solution acidity, the electrolyte cathode, etc were optimized with 1.0mgL(-1) thallium standard solution. The resolution of the fiber-optical spectrometer investigated with the peak width at half height of thallium was tested to be about 1.8nm,and thallium was determined at the emission wavelength of 535...
October 1, 2017: Talanta
https://www.readbyqxmd.com/read/28600986/neonatal-exposure-to-environmental-pollutants-and-placental-mitochondrial-dna-content-a-multi-pollutant-approach
#13
Annette Vriens, Tim S Nawrot, Willy Baeyens, Elly Den Hond, Liesbeth Bruckers, Adrian Covaci, Kim Croes, Sam De Craemer, Eva Govarts, Nathalie Lambrechts, Ilse Loots, Vera Nelen, Martien Peusens, Stefaan De Henauw, Greet Schoeters, Michelle Plusquin
BACKGROUND: Placental mitochondrial DNA (mtDNA) content can be indicative of oxidative damage to the placenta during fetal development and is responsive to external stressors. In utero exposure to environmental pollutants that may influence placental mtDNA needs further exploration. OBJECTIVES: We evaluated if placental mtDNA content is altered by environmental pollution in newborns and identified pollutants independently associated to alterations in placental mtDNA content...
June 7, 2017: Environment International
https://www.readbyqxmd.com/read/28595096/occurrence-and-mobility-of-toxic-elements-in-coals-from-endemic-fluorosis-areas-in-the-three-gorges-region-sw-china
#14
Yan Xiong, Tangfu Xiao, Yizhang Liu, Jianming Zhu, Zengping Ning, Qingxiang Xiao
Fluorine (F) is a topic of great interest in coal-combustion related endemic fluorosis areas. However, little extent research exists regarding the environmental geochemistry of toxic elements that are enriched in coals and coal wastes in traditional endemic fluorosis areas, particularly focusing on their occurrences and mobilities during the weathering-leaching processes of coals and coal wastes in the surface environment. This paper addressed the issue of toxic elements in coals and coal wastes in the Three Gorges Region, Southwest (SW) China, where endemic fluorosis has historically prevailed, and investigated the distribution, occurrence, mobility features, and associated potential health risks...
June 5, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28578231/removal-of-thallium-from-aqueous-solutions-using-fe-mn-binary-oxides
#15
Huosheng Li, Yongheng Chen, Jianyou Long, Xiuwan Li, Daqian Jiang, Ping Zhang, Jianying Qi, Xuexia Huang, Juan Liu, Ruibing Xu, Jian Gong
In this study, Fe-Mn binary oxides, which harbor the strong oxidative power of manganese dioxide and the high adsorption capacity of iron oxides, were synthesized for Tl(I) removal using a concurrent chemical oxidation and precipitation method. The adsorption of Tl onto the Fe-Mn adsorbent was fast, effective, and selective, with equilibrium sorption reaching over 95% under a broad operating pH (3-12), and high ionic strength (0.1-0.5mol/L). The adsorption can be well fitted with both Langmuir and Freundlich isotherms, and the kinetics can be well described by the pseudo-second-order model...
May 25, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28571191/a-successfully-treated-case-of-criminal-thallium-poisoning
#16
Tetsuya Yumoto, Kohei Tsukahara, Hiromichi Naito, Atsuyoshi Iida, Atsunori Nakao
Thallium was once commonly used as a household rodent or ant killer, but many countries have banned such use due to unintentional or criminal poisonings of humans. A common initial clinical manifestation of thallium poisoning is gastrointestinal symptoms followed by delayed onset of neurological symptoms and alopecia. These clinical characteristics can provide important diagnostic clues regarding thallium poisoning. Here, we report a 23-year-old woman who was poisoned by a business colleague when she unknowingly drank tea containing the toxic substance several times...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28554024/dispersion-and-solubility-of-in-tl-ta-and-nb-in-the-aquatic-environment-and-intertidal-sediments-of-the-scheldt-estuary-flanders-belgium
#17
Karel Folens, Gijs Du Laing
Certain specialty elements are indispensable in modern technologies for their particular properties. Yet, potential risks associated to the release of these elements at any stage, remains unknown. Therefore, the dispersion of indium (In), thallium (Tl), tantalum (Ta) and niobium (Nb) in the aquatic environment of the Scheldt estuary (Flanders, Belgium) was studied. Maximum concentrations in intertidal sediments of 101 ± 15 μg kg(-1) for In, 481 ± 37 μg kg(-1) for Tl, 88 ± 19 μg kg(-1) for Ta and 1162 ± 4 μg kg(-1) for Nb appeared on the sampling location closest to the river mouth, i...
May 17, 2017: Chemosphere
https://www.readbyqxmd.com/read/28551138/thallium-release-from-acid-mine-drainages-speciation-in-river-and-tap-water-from-valdicastello-mining-district-northwest-tuscany
#18
Beatrice Campanella, Corinne Casiot, Massimo Onor, Martina Perotti, Riccardo Petrini, Emilia Bramanti
In this work we present an advantageous method for the simultaneous separation and detection of Tl(I) and Tl(III) species through ion chromatography coupled with on-line inductively coupled plasma - mass spectrometry. Chromatographic separation between Tl(III) and Tl(I) was achieved in less than two minutes. The method was validated by recovery experiments on real samples, and by comparing the sum of the concentrations of individual Tl species with total thallium values obtained from continuous flow ICP-MS...
August 15, 2017: Talanta
https://www.readbyqxmd.com/read/28535879/characterization-of-a-new-candidate-isotopic-reference-material-for-natural-pb-using-primary-measurement-method
#19
Naoko Nonose, Toshihiro Suzuki, Ki-Cheol Shin, Tsutomu Miura, Akiharu Hioki
A lead isotopic standard solution with natural abundance has been developed by applying a mixture of a solution of enriched (208)Pb and a solution of enriched (204)Pb ((208)Pb-(204)Pb double spike solution) as bracketing method. The amount-of-substance ratio of (208)Pb:(204)Pb in this solution is accurately measured by applying EDTA titrimetry, which is one of the primary measurement methods, to each enriched Pb isotope solution. Also metal impurities affecting EDTA titration and minor lead isotopes contained in each enriched Pb isotope solution are quantified by ICP-SF-MS...
June 29, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28534155/myocardial-delayed-enhancement-ct-initial-experience-in-children-and-young-adults
#20
Hyun Woo Goo
BACKGROUND: Clinical utility of myocardial delayed enhancement CT has not been reported in children and young adults. OBJECTIVE: To describe initial experience of myocardial delayed enhancement CT regarding image quality, radiation dose and identification of myocardial lesions in children and young adults. MATERIALS AND METHODS: Between August 2013 and November 2016, 29 consecutive children and young adults (median age 16 months) with suspected coronary artery or myocardial abnormality underwent arterial- and delayed-phase cardiac CT at our institution...
May 23, 2017: Pediatric Radiology
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