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https://www.readbyqxmd.com/read/28807473/water-treatment-by-magnetic-field-increases-bone-mineral-density-of-rats
#1
Geraldo Balieiro Neto, Jair Rodini Engracia Filho, Bruna Rezende Silva Martins de Oliveira, Cássia Maria Molinaro Coelho, Lilian Francisco Arantes de Souza, Mario Jefferson Quirino Louzada
Water treatment using a magnetic field is an attractive but controversial issue with regard to its effects on human health. This study aimed to investigate the effects of water treatment using a magnetic field on the bone mineral density (BMD), bone mineral content (BMC), bone area (BA), bone resistance (BR), blood gas analysis, blood viscosity, and blood biochemical profile of rats. Forty-eight Wistar rats were divided into 2 groups: control (n = 24) and magnetic water-treated (n = 24). Each of these groups was subdivided into 3 groups to evaluate 3 consumption periods (15, 30, and 45 d)...
August 11, 2017: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28800519/emerging-poly-and-perfluoroalkyl-substances-in-the-aquatic-environment-a-review-of-current-literature
#2
REVIEW
Feng Xiao
Poly- and perfluoroalkyl substances (PFASs) comprise a group of synthetic organic surfactants with a wide range of industrial and commercial applications. A few PFASs such as perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) are now known to be ubiquitously present in the aquatic environment. They have become a global concern because of the toxicity and bioaccumulative properties. With the increasing availability of high-resolution mass spectrometers, many novel PFASs have been identified. Studies published between 2009 and 2017 have discovered 455 new PFASs (including nine fully and 446 partially fluorinated compounds), 45%, 29%, 17%, and 8% of which are anions, zwitterions, cations, and neutrals, respectively...
July 15, 2017: Water Research
https://www.readbyqxmd.com/read/28797958/quantification-of-paracetamol-and-5-oxoproline-in-serum-by-capillary-electrophoresis-implication-for-clinical-toxicology
#3
Tomáš Hložek, Tomáš Křížek, Petr Tůma, Miroslava Bursová, Pavel Coufal, Radomír Čabala
High anion gap metabolic acidosis frequently complicates acute paracetamol overdose and is generally attributed to lactic acidosis or compromised hepatic function. However, metabolic acidosis can also be caused by organic acid 5-oxoproline (pyroglutamic acid). Paracetamol's toxic intermediate, N-acetyl-p-benzoquinoneimine irreversibly binds to glutathione and its depletion leads to subsequent disruption of the gamma glutamyl cycle and an excessive 5-oxoproline generation. This is undoubtedly an underdiagnosed condition because measurement of serum 5-oxoproline level is not readily available...
July 26, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28796408/use-of-the-anion-gap-and-intermittent-hemodialysis-following-continuous-hemodiafiltration-in-extremely-high-dose-acute-on-chronic-lithium-poisoning-a-case-report
#4
Yohei Komaru, Ryota Inokuchi, Yoshihiro Ueda, Masaomi Nangaku, Kent Doi
A 35-year-old woman intentionally took 40,000 mg of lithium carbonate, and she was transferred to our hospital with nausea, vomiting, and diarrhea. She was diagnosed as having bipolar disorder 10 years ago and was receiving oral lithium therapy. Blood test results on arrival were remarkable for a negative anion gap of -2.1 and later, the serum lithium level turned out to be as high as 15.4 mEq/L. Intubation was required because of disrupted consciousness, and continuous hemodiafiltration (CHDF) was immediately started in the intensive care unit to obtain constant removal of lithium...
August 10, 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28782093/metabolic-acidosis-caused-by-concomitant-use-of-paracetamol-acetaminophen-and-flucloxacillin-a-case-report-and-a-retrospective-study
#5
J K Berbee, L A Lammers, C T P Krediet, J C Fischer, E M Kemper
PURPOSE: A patient was identified with severe metabolic acidosis, a high anion gap and 5-oxoproline accumulation, probably caused by the simultaneous use of paracetamol (acetaminophen) and flucloxacillin. We wanted to investigate the necessity to control the interaction between both drugs with an automatic alert system. METHODS: To investigate the relevance of the interaction of paracetamol and flucloxacillin, a retrospective study was conducted. Data on paracetamol and flucloxacillin prescriptions and laboratory data (pH, Na(+), HCO3(-), Cl(-), albumin and 5-oxoproline levels) were combined to assess the prevalence of acidosis, calculate the anion gap and analyse 5-oxoproline levels in clinically admitted patients using both drugs simultaneously...
August 7, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28768408/what-controls-photocatalytic-water-oxidation-on-rutile-tio2-110-under-ultra-high-vacuum-conditions
#6
Annapaola Migani, Lluís Blancafort
The photocatalytic O-H dissociation of water absorbed on a rutile TiO2(110) surface in ultrahigh vacuum (UHV) is studied with spin-polarized density functional theory and a hybrid exchange-correlation functional (HSE06), treating the excited-state species as excitons with triplet multiplicity. This system is a model for the photocatalytic oxidation of water by TiO2 in an aqueous medium, which is relevant for the oxygen evolution reaction and photodegradation of organic pollutants. We provide a comprehensive mechanistic picture where the most representative paths correspond to excitonic configurations with the hole located on three- and two-coordinate surface oxygen atoms (O3s and O2s)...
August 15, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28764826/minding-the-gap-utility-of-the-anion-gap-in-the-differential-diagnosis-of-metabolic-acidosis
#7
Susan Givens Bell
The anion gap, in conjunction with other laboratory results, can be a useful clue in the differential diagnosis of metabolic acidosis. There are three primary causes of metabolic acidosis: loss of base, decreased renal excretion of acid, and increased acid production. Depending on the cause of metabolic acidosis, the anion gap may be elevated or normal.
July 1, 2017: Neonatal Network: NN
https://www.readbyqxmd.com/read/28752868/a-waugh-type-como9o32-6-cluster-with-atomically-dispersed-co-iv-originates-from-anderson-type-como6o24-3-for-photocatalytic-oxygen-molecule-activation
#8
Yongdong Chen, Chaolei Zhang, Caoping Yang, Jiangwei Zhang, Kai Zheng, Qihua Fang, Gao Li
An atomically dispersed Waugh type [CoMo9O32](6-) cluster is obtained, employing the most flexible structure unit Anderson type [Co(OH)6Mo6O18](3-) as a precursor. The structure of the [CoMo9O32](6-) cluster is identified by single crystal X-ray diffraction and also well characterized by FT-IR, ESI-MS, UV-Vis, EA, and TGA spectroscopy. Its 3D framework forms a quasi 2D material and possesses curved edge triangle shape nanopores with a diameter of 8.9 Å. The Co(IV) and Mo(VI) oxidation states and the related valence band and electronic state of Co are definitely confirmed by X-ray photoelectron spectroscopy (XPS), ultraviolet photoemission spectroscopy (UPS), and bond valence sum (BVS)...
July 28, 2017: Nanoscale
https://www.readbyqxmd.com/read/28749752/high-anion-gap-metabolic-acidosis-induced-by-cumulation-of-ketones-l-and-d-lactate-5-oxoproline-and-acute-renal-failure
#9
Laura Heireman, Boris Mahieu, Mark Helbert, Wim Uyttenbroeck, Jan Stroobants, Marian Piqueur
INTRODUCTION: Frequent causes of high anion gap metabolic acidosis (HAGMA) are lactic acidosis, ketoacidosis and impaired renal function. In this case report, a HAGMA caused by ketones, L- and D-lactate, acute renal failure as well as 5-oxoproline is discussed. CASE PRESENTATION: A 69-year-old woman was admitted to the emergency department with lowered consciousness, hyperventilation, diarrhoea and vomiting. The patient had suffered uncontrolled type 2 diabetes mellitus, underwent gastric bypass surgery in the past and was chronically treated with high doses of paracetamol and fosfomycin...
July 27, 2017: Acta Clinica Belgica
https://www.readbyqxmd.com/read/28749308/evaluation-of-the-effects-of-sternal-versus-lateral-recumbency-on-trends-of-selected-physiologic-parameters-during-isoflurane-anesthesia-in-zoo-housed-black-tailed-prairie-dogs-cynomys-ludovicianus
#10
David Eshar, Diane Mason, Nili Avni-Magen, Elizabeth Kaufman, Avital Paz, Hugues Beaufrère
Isoflurane gas anesthesia is often used for immobilization of prairie dogs in field studies, laboratory research, and veterinary clinical purposes. The goals of this prospective study were to evaluate the effects of sternal versus right lateral recumbency on trends of selected physiologic parameters during isoflurane anesthesia in black-tailed prairie dogs ( Cynomys ludovicianus ). Fourteen adult, zoo-housed black-tailed prairie dogs were tested during the study. Animals were anesthetized using isoflurane and randomly placed in either sternal or right lateral recumbency to evaluate changes in trends of physiologic parameters, measured selectively every 30 min throughout a 60-min anesthesia period...
June 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28742636/the-influence-of-chloride-for-the-interpretation-of-plasma-bicarbonate-during-the-treatment-of-diabetic-ketoacidosis
#11
Juan Pablo Ferreira, Magali Hamui, Milagros Torrents, Romina Carrano, Mabel Ferraro, Ismael Toledo
INTRODUCTION: Hyperchloremic metabolic acidosis can occur in diabetic ketoacidosis (DKA) and may affect the acid-base interpretation during treatment. OBJECTIVES: This study aims to describe the prevalence of hyperchloremia during the treatment of DKA and its effect on the interpretation of bicarbonate value. METHODS: A cross-sectional study, including all cases of DKA in patients aged 1 to 18 years old admitted from 2010 to 2015, was performed...
July 24, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/28736054/low-sensitivity-of-anion-gap-to-detect-clinically-significant-lactic-acidosis-in-the-emergency-department
#12
Q Xu, S HowlettClyne, A Fuezery, G S Cembrowski
INTRODUCTION: Lactic acidosis represents the pathologic accumulation of lactate and hydrogen ions. It is important to efficiently diagnose lactic acidosis as delayed treatment will lead to poor patient outcomes. As plasma lactate levels may not be rapidly available, some physicians may use elevated anion gaps to test for the need to measure lactate. All Edmonton metropolitan hospitals have Radiometer blood gas/electrolyte instruments in the ED or close by. As lactate is measured for each set of electrolytes, we were able to determine the effectiveness of a screening anion gap for lactic acidosis...
July 20, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28731693/isolable-bis-triarylamine-dications-analogues-of-thiele-s-chichibabin-s-and-m%C3%A3-ller-s-hydrocarbons
#13
Gengwen Tan, Xinping Wang
Since the pioneering work by Thiele and Chichibabin, who synthesized the first diradicals bridged by phenylene and biphenylene groups in 1904 and 1907, respectively, numerous efforts have been devoted to synthesizing stable diradicals during the last few decades, and several strategies have been developed to stabilize these highly reactive diradicals. In this Account, we describe the synthesis and characterization of isolable bis(triarylamine) dications, nitrogen analogues of Thiele's, Chichibabin's, and Müller's hydrocarbons, which represent facilely accessible, stable diradicals by replacing carbinyl centers with isoelectronic aminium centers...
July 21, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28714208/bifunctional-transition-metal-hydroxysulfides-room-temperature-sulfurization-and-their-applications-in-zn-air-batteries
#14
Hao-Fan Wang, Cheng Tang, Bin Wang, Bo-Quan Li, Qiang Zhang
Bifunctional electrocatalysis for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) constitutes the bottleneck of various sustainable energy devices and systems like rechargeable metal-air batteries. Emerging catalyst materials are strongly requested toward superior electrocatalytic activities and practical applications. In this study, transition metal hydroxysulfides are presented as bifunctional OER/ORR electrocatalysts for Zn-air batteries. By simply immersing Co-based hydroxide precursor into solution with high-concentration S(2-) , transition metal hydroxides convert to hydroxysulfides with excellent morphology preservation at room temperature...
July 17, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28714123/defect-engineering-of-chalcogen-tailored-oxygen-electrocatalysts-for-rechargeable-quasi-solid-state-zinc-air-batteries
#15
Jing Fu, Fathy M Hassan, Cheng Zhong, Jun Lu, Han Liu, Aiping Yu, Zhongwei Chen
A critical bottleneck limiting the performance of rechargeable zinc-air batteries lies in the inefficient bifunctional electrocatalysts for the oxygen reduction and evolution reactions at the air electrodes. Hybridizing transition-metal oxides with functional graphene materials has shown great advantages due to their catalytic synergism. However, both the mediocre catalytic activity of metal oxides and the restricted 2D mass/charge transfer of graphene render these hybrid catalysts inefficient. Here, an effective strategy combining anion substitution, defect engineering, and the dopant effect to address the above two critical issues is shown...
July 17, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28711257/seasonal-and-maternal-effects-on-acid-base-l-lactate-electrolyte-and-hematological-status-of-205-dairy-calves-born-to-eutocic-dams
#16
L Kovács, F L Kézér, E Albert, F Ruff, O Szenci
In this study, we used linear mixed models to determine the effects of season, time of sampling relative to birth (factors), duration of the delivery process, duration of maternal grooming, calf body weight (BW) at birth, and time of day (covariates) on values of venous blood gas, acid-base and electrolyte parameters, and l-lactate concentrations in dairy calves born to eutocic dams in summer (SUM, n = 101) and winter (WIN, n = 104). Neonatal vitality was assessed at 0, 1, and 24 h after delivery in a linear scoring system using muscle tone, erection of the head, muscle reflexes, heart rate, and sucking drive as criteria...
September 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28702644/photoluminescent-dielectric-duple-switch-in-a-perovskite-type-high-temperature-phase-transition-compound-ch3-3pch2och3-pbbr3
#17
Fu-Juan Geng, De-Hong Wu, Lin Zhou, Ping-Ping Shi, Peng-Fei Li, Ji-Xing Gao, Xuan Zheng, Da-Wei Fu, Qiong Ye
A bistable optical-electrical duple switch belongs to a class of highly satisfying intelligent materials that can transform optical and electrical responses simultaneously in one device. A perovskite-type high-temperature phase transition compound with one-dimensional chain-like crystal structure, ([(CH3)3PCH2OCH3][PbBr3], 1), displays remarkable bistable photoluminescent-dielectric duple switching behaviors. The noteworthy order-disorder transition of the phosphonium cation and the motions of anions contribute to the phase transition, leading to the space group P21/c at a low temperature phase to C2/c at a high temperature phase...
July 25, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28695610/anion-gap-can-differentiate-between-psychogenic-and-epileptic-seizures-in-the-emergency-setting
#18
Yi Li, Liesl Matzka, Louise Maranda, Daniel Weber
Differentiation between psychogenic nonepileptic seizures (PNES) and generalized convulsive epileptic seizures (ES) is important for appropriate triaging in the emergency department (ED). This can be difficult in the ED, as the event is often not witnessed by a medical professional. In the current study, we investigated whether anion gap (AG), bicarbonate, and the Denver Seizure Score (DSS) could differentiate between PNES and ES. Of a total of 1,354 subjects reviewed from a tertiary care medical center, 27 PNES and 27 ES patients were identified based on clinical description and subsequent electroencephalogram...
July 11, 2017: Epilepsia
https://www.readbyqxmd.com/read/28654273/luminescent-dinuclear-ruthenium-terpyridine-complexes-with-a-bis-phenylbenzimidazole-spacer
#19
Debiprasad Mondal, Sourav Biswas, Animesh Paul, Sujoy Baitalik
A conjugated bis-terpyridine bridging ligand, 2-(4-(2,6-di(pyridin-2-yl)pyridin-4-yl)phenyl)-6-(2-(4-(2,6-di(pyridin-2-yl)pyridin-4-yl)phenyl)-1H-benzo[d]imidazol-6-yl)-1H-benzo[d] imidazole (tpy-BPhBzimH2-tpy), was designed in this work by covalent coupling of 3,3'-diaminobenzidine and two 4'-(p-formylphenyl)-2,2':6',2″-terpyridine units to synthesize a new series of bimetallic Ru(II)-terpyridine light-harvesting complexes. Photophysical and electrochemical properties were modulated by the variation of the terminal ligands in the complexes...
July 17, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28649960/gold-nanoparticles-decorated-electrospun-poly-n-vinyl-2-pyrrolidone-nanofibers-with-tunable-size-and-coverage-density-for-nanomolar-detection-of-single-and-binary-component-dyes-by-surface-enhanced-raman-spectroscopy
#20
Alfin Kurniawan, Meng-Jiy Wang
The application of the electrospun nanomaterials to surface-enhanced Raman spectroscopy (SERS) is a rapidly evolving field which holds potential for future developments in the generation of portable plasmonic-based detection platforms. In this study, a simple approach to fabricate electrospun poly(N-vinylpyrrolidone) (PVP) mats decorated with gold nanoparticles (AuNPs) by combining electrospinning and calcination was presented. AuNPs were decorated on the fiber mat surface through electrostatic interactions between positively charged aminosilane groups and negatively charged AuNPs...
June 26, 2017: Nanotechnology
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