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https://www.readbyqxmd.com/read/29111277/resolution-of-ketoacidosis-in-children-with-new-onset-diabetes-evaluation-of-various-definitions
#1
Julia E von Oettingen, Erinn T Rhodes, Joseph I Wolfsdorf
AIMS: Data are sparse concerning use of serum electrolyte parameters as compared to venous blood gas (VBG) measurements to monitor acid-base status during treatment of diabetic ketoacidosis (DKA). We explored the utility of various parameters to define DKA resolution by investigating the relationship of venous pH (vpH), anion gap (AG), serum bicarbonate (HCO3), and glucose concentration during management of DKA in children with new onset diabetes mellitus (NODM). METHODS: We included all patients with NODM presenting with DKA to Boston Children's Hospital from 10/1/07-7/1/13...
October 27, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/29100545/a-systematic-review-and-diagnostic-test-accuracy-meta-analysis-of-the-validity-of-anion-gap-as-a-screening-tool-for-hyperlactatemia
#2
Stella Andrea Glasmacher, William Stones
OBJECTIVE: This systematic review and meta-analysis seeks to determine the validity of the anion gap to screen for hyperlactatemia in critically ill patients. We have previously shown that the anion gap does not predict 31-day and in-hospital mortality in critically ill patients. The present review aims to add confirmatory evidence to identify whether the anion gap is a suitable tool for risk stratification in low-resource countries. RESULTS: Nine studies reporting on 4504 samples from 2111 patients were included...
November 3, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/29097482/urine-anion-gap-to-predict-urine-ammonium-and-related-outcomes-in-kidney-disease
#3
Kalani L Raphael, Sarah Gilligan, Joachim H Ix
BACKGROUND AND OBJECTIVES: Low urine ammonium excretion is associated with ESRD in CKD. Few laboratories measure urine ammonium, limiting clinical application. We determined correlations between urine ammonium, the standard urine anion gap, and a modified urine anion gap that includes sulfate and phosphate and compared risks of ESRD or death between these ammonium estimates and directly measured ammonium. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: We measured ammonium, sodium, potassium, chloride, phosphate, and sulfate from baseline 24-hour urine collections in 1044 African-American Study of Kidney Disease and Hypertension participants...
November 2, 2017: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/29091411/in-situ-ligand-modification-strategy-for-the-construction-of-one-two-and-three-dimensional-heterometallic-iodides
#4
Ai-Huan Sun, Jie Pan, Song-De Han, Xu-Yan Xue, Qi Wei, Jin-Hua Li, Guo-Ming Wang
Three heterometallic iodides featuring the novel in situ modified ligands N,N',N″-trimethyl-2,4,6-tris(4-pyridyl)-1,3,5-triazine (Me3tpt(3+)), N,N'-dimethyl-2,4,6-tris(4-pyridyl)-1,3,5-triazine (Me2tpt(2+)), and N-monomethyl-2,4,6-tris(4-pyridyl)-1,3,5-triazine (Metpt(+)), [Pb3CuI10(Me3tpt)] (1), [Pb5Cu2I16(Me2tpt)2] (2), and [Pb3Cu6I14(Metpt)2] (3), were synthesized. Compound 1 exhibits a chain structure, in which the Pb4I16 units are connected by the CuI3 units. The negative charge of the resulting chain is balanced by the cationic Me3tpt(3+) groups...
November 1, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/29062185/a-case-of-renal-tubular-acidosis-with-sjogren-s-syndrome-showing-paradoxical-block-of-pth-due-to-severe-hypomagnesemia
#5
B Vinodh Kumar, M Sivalingam, G Shiva Kumaran, Balambal Balakrishnan
Distal renal tubular acidosis (RTA) manifests either as Complete/Classical form or Incomplete/Latent Form. Distal RTA causes normal anion gap metabolic acidosis and hypokalemia. Interstitial Nephritis is the most frequent renal manifestation of Sjogren's, which presents as Distal RTA in 25-40% of patients with Sjogren's syndrome. Magnesium deficiency is frequently associated with hypokalemia. Although serum calcium is the main physiological control for the secretion of parathyroid hormone (PTH) by the parathyroid, serum magnesium can also exert similar effects...
October 2017: Indian Journal of Clinical Biochemistry: IJCB
https://www.readbyqxmd.com/read/29037045/bi4o4cu1-7se2-7cl0-3-intergrowth-of-biocuse-and-bi2o2se-stabilized-by-the-addition-of-a-third-anion
#6
Quinn D Gibson, Matthew S Dyer, George F S Whitehead, Jonathan Alaria, Michael J Pitcher, Holly J Edwards, John B Claridge, Marco Zanella, Karl Dawson, Troy D Manning, Vin R Dhanak, Matthew J Rosseinsky
Layered two-anion compounds are of interest for their diverse electronic properties. The modular nature of their layered structures offers opportunities for the construction of complex stackings used to introduce or tune functionality, but the accessible layer combinations are limited by the crystal chemistries of the available anions. We present a layered three-anion material, Bi4O4Cu1.7Se2.7Cl0.3, which adopts a new structure type composed of alternately stacked BiOCuSe and Bi2O2Se-like units. This structure is accessed by inclusion of three chemically distinct anions, which are accommodated by aliovalently substituted Bi2O2Se0...
October 25, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29018645/dietary-therapy-for-von-gierke-s-disease-a-case-report
#7
Mohammad Raza, Fehmina Arif, Pirthvi Raj Giyanwani, Saad Azizullah, Sonum Kumari
Von Gierke's disease, also known as glycogen storage disease (GSD) type 1A, is an autosomal recessive disease in which there is an inability to cleave glycogen to glucose because of a glucose 6 phosphate deficiency resulting in hypoglycemia and lactic acidosis. The patient may present with hepatomegaly and signs and symptoms of hypoglycemia. We diagnosed a case of Von Gierke's disease in a seven-month-old female infant who was admitted for abdominal distension, vomiting, and lethargy for a duration of four months with characteristic rounded doll's face, fatty cheeks, protuberant abdomen, and massive hepatomegaly...
August 8, 2017: Curēus
https://www.readbyqxmd.com/read/28953385/octa-kagom%C3%A3-lattice-compounds-showing-quantum-critical-behaviors-spin-gap-ground-state-versus-antiferromagnetic-ordering
#8
Yingying Tang, Cheng Peng, Wenbin Guo, Jun-Feng Wang, Gang Su, Zhangzhen He
Search for a new geometrically frustrated lattice is a great challenge. Herein, we report on a successful synthesis of two new layered compounds BiOCu2(XO3)(SO4)(OH)·H2O [X = Te (1) and Se (2)] with a new type of geometrically frustrated lattice (i.e., the octa-kagomé lattice) between kagomé and star motifs. Magnetic measurements confirmed that 1 exhibits a spin gap ground state, while 2 possesses a typical antiferromagnetic ordering at low-temperature. Such different magnetic behaviors between two isostructural compounds are suggested to originate from a slightly structural modification induced by nonmagnetic XO3 anionic groups...
October 11, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28952727/cyanido-bridged-ln-iii-w-v-heterobinuclear-complexes-synthesis-and-magneto-structural-study
#9
Maria-Gabriela Alexandru, Diana Visinescu, Sergiu Shova, Francesc Lloret, Miguel Julve
A new series of cyanido-bridged {Ln(III)W(V)} heterobinuclear complexes of formula [Ln(III)(pyim)2(i-PrOH)(H2O)2(μ-CN)W(V)(CN)7]·2H2O [Ln = Gd (1), Tb (2), Dy (3), Ho (4), and Er (5); pyim = 2-(1H-imidazol-2-yl)-pyridine) and i-PrOH = isopropyl alcohol] were synthesized by one-pot reaction between (NH3Bu)3[W(CN)8] and [Ln(pyim)2](2+) complexes (generated in situ by mixing the corresponding Ln(III) ions and the pyim ligand). Compounds 1-5 are isomorphous and crystallize in the monoclinic system P21/n space group...
September 27, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28926691/cobalt-porphyrin-thiazyl-radical-coordination-polymers-toward-metal-organic-electronics
#10
Delia A Haynes, Laura J van Laeren, Orde Q Munro
Herein we delineate an unusual one-dimensional coordination polymer (CP), 3, prepared from S = 1/2 Co(TPP), 1 (TPP = 5,10,15,20-tetraphenylporphyrin dianion), and S = 1/2 4-(4'-pyridyl)-1,2,3,5-dithiadiazolyl (py-DTDA) radical, 2. The atypically long S-S distance for CP 3 (2.12 Å) reflects fractional electron transfer from the formally Co(II) ion into the antibonding π-SOMO of the metal-bound py-DTDA bridging ligand. The bonding in solid CP 3 involves noninteger redox states in a resonance hybrid repeat unit best formulated as [Co(TPP)](0...
October 4, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28924478/a-rare-cause-of-metabolic-acidosis-ketoacidosis-in-a-non-diabetic-lactating-woman
#11
Gordon Sloan, Amjad Ali, Jonathan Webster
Ketoacidosis occurring during lactation has been described infrequently. The condition is incompletely understood, but it appears to be associated with a combination of increased metabolic demands during lactation, reduction in carbohydrate intake and acute illness. We present a case of a 27-year-old woman, 8 weeks post-partum, who was exclusively breastfeeding her child whilst following a low carbohydrate diet. She developed gastroenteritis and was unable to tolerate an oral diet for several days. She presented with severe metabolic acidosis on admission with a blood 3-hydroxybutyrate of 5...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28914421/acid-base-safety-during-the-course-of-a-very-low-calorie-ketogenic-diet
#12
Diego Gomez-Arbelaez, Ana B Crujeiras, Ana I Castro, Albert Goday, Antonio Mas-Lorenzo, Ana Bellon, Cristina Tejera, Diego Bellido, Cristobal Galban, Ignacio Sajoux, Patricio Lopez-Jaramillo, Felipe F Casanueva
BACKGROUND AND AIMS: Very low-calorie ketogenic (VLCK) diets have been consistently shown to be an effective obesity treatment, but the current evidence for its acid-base safety is limited. The aim of the current work was to evaluate the acid-base status of obese patients during the course of a VLCK diet. METHOD: Twenty obese participants undertook a VLCK diet for 4 months. Anthropometric and biochemical parameters, and venous blood gases were obtained on four subsequent visits: visit C-1 (baseline); visit C-2, (1-2 months); maximum ketosis; visit C-3 (2-3 months), ketosis declining; and visit C-4 at 4 months, no ketosis...
October 2017: Endocrine
https://www.readbyqxmd.com/read/28883241/ketoacidosis-due-to-a-low-carbohydrate-diet-in-an-elderly-woman-with-dementia-and-abnormal-eating-behavior
#13
Hitoshi Iwata, Seiichiro Tsuzuki, Mitsunaga Iwata, Teruhiko Terasawa
Strict restriction of carbohydrates can induce symptomatic ketoacidosis. We herein report a 76-year-old demented woman who developed ketoacidosis after 1 month of abnormal eating behavior involving selectively eating hamburger steak (estimated carbohydrate =12.7 g/day). Laboratory tests showed high-anion-gap metabolic acidosis with elevated blood ketone levels. She was successfully treated with intravenous fluids followed by oral intake of a regular diet. She remained relapse-free after correcting her eating habits...
October 1, 2017: Internal Medicine
https://www.readbyqxmd.com/read/28865122/investigation-of-challenging-spin-systems-using-monte-carlo-configuration-interaction-and-the-density-matrix-renormalization-group
#14
Jeremy P Coe, Nuno M S Almeida, Martin J Paterson
We investigate if a range of challenging spin systems can be described sufficiently well using Monte Carlo configuration interaction (MCCI) and the density matrix renormalization group (DMRG) in a way that heads toward a more "black box" approach. Experimental results and other computational methods are used for comparison. The gap between the lowest doublet and quartet state of methylidyne (CH) is first considered. We then look at a range of first-row transition metal monocarbonyls: MCO when M is titanium, vanadium, chromium, or manganese...
September 2, 2017: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/28840651/two-series-of-homodinuclear-lanthanide-complexes-greatly-enhancing-energy-barriers-through-tuning-terminal-solvent-ligands-in-dy2-single-molecule-magnets
#15
Yaru Qin, Haifeng Zhang, Hao Sun, Yangdan Pan, Yu Ge, Yahong Li, Yi-Quan Zhang
The utilization of 2-ethoxy-6-{[(2-hydroxy-3-methoxybenzyl)imino]methyl}phenol (H2 L) as a chelating ligand, in combination with the employment of alcohols (EtOH and MeOH) as auxiliary ligands, in 4 f-metal chemistry afforded two series of dinuclear lanthanide complexes of compositions [Ln2 L2 (NO3 )2 (EtOH)2 ] (Ln=Sm (1), Eu (2), Gd (3), Tb (4), Dy (5), Ho (6), Er (7)) and [Ln2 L2 (NO3 )2 (MeOH)2 ] (Ln=Sm (8), Eu (9), Gd (10), Tb (11), Dy (12), Ho (13), Er (14)). The structures of 1-14 were determined by single-crystal X-ray crystallography...
August 24, 2017: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/28782093/metabolic-acidosis-caused-by-concomitant-use-of-paracetamol-acetaminophen-and-flucloxacillin-a-case-report-and-a-retrospective-study
#16
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...
November 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
#17
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/28736054/low-sensitivity-of-anion-gap-to-detect-clinically-significant-lactic-acidosis-in-the-emergency-department
#18
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/28714123/defect-engineering-of-chalcogen-tailored-oxygen-electrocatalysts-for-rechargeable-quasi-solid-state-zinc-air-batteries
#19
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/28702644/photoluminescent-dielectric-duple-switch-in-a-perovskite-type-high-temperature-phase-transition-compound-ch3-3pch2och3-pbbr3
#20
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
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