Read by QxMD icon Read

lanthanum carbonate

Aysha Masood Khan, Ismail Yusoff, Nor Kartini Abu Bakar, Ahmad Farid Abu Bakar, Yatimah Alias
A study was carried out to determine the level of rare earth elements (REEs) in water and sediment samples from ex-mining lakes and River in Kinta Valley, Perak, Malaysia. Surface water and sediments from an ex-mining lake and Kinta River water samples were analyzed for REEs by inductively coupled plasma mass spectrometry. The total concentration of REEs in the ex-mining lake water samples and sediments were found to be 3685 mg/l and 14159 mg/kg, respectively, while the total concentration of REEs in Kinta River water sample was found to be 1224 mg/l...
September 27, 2016: Environmental Science and Pollution Research International
Connie M Rhee, Amy S You, Tara Koontz Parsons, Amanda R Tortorici, Rachelle Bross, David E St-Jules, Jennie Jing, Martin L Lee, Debbie Benner, Csaba P Kovesdy, Rajnish Mehrotra, Joel D Kopple, Kamyar Kalantar-Zadeh
BACKGROUND: Inadequate protein intake and hypoalbuminemia, indicators of protein-energy wasting, are among the strongest mortality predictors in hemodialysis patients. Hemodialysis patients are frequently counseled on dietary phosphorus restriction, which may inadvertently lead to decreased protein intake. We hypothesized that, in hypoalbuminemic hemodialysis patients, provision of high-protein meals during hemodialysis combined with a potent phosphorus binder increases serum albumin without raising phosphorus levels...
September 22, 2016: Nephrology, Dialysis, Transplantation
Steven Habbous, Sebastian Przech, Rey Acedillo, Sisira Sarma, Amit X Garg, Janet Martin
BACKGROUND: It remains unclear which phosphate binders should be preferred for hyperphosphatemia management in chronic kidney disease (CKD). METHODS: We performed a systematic review and meta-analysis of randomized trials comparing sevelamer or lanthanum with other phosphate binders in CKD. RESULTS: Fifty-one trials (8829 patients) were reviewed. Compared with calcium-based binders, all-cause mortality was nonsignificantly lower with sevelamer {risk ratio [RR] 0...
September 20, 2016: Nephrology, Dialysis, Transplantation
Nathan M Good, Huong N Vu, Carly J Suriano, Gabriel A Subuyuj, Elizabeth Skovran, N Cecilia Martinez-Gomez
: Lanthanides are utilized by microbial methanol dehydrogenases, and it has been proposed that lanthanides may be important for other Type I alcohol dehydrogenases. A triple mutant strain (mxaF xoxF1 xoxF2, named MDH-3), deficient in the three known methanol dehydrogenases of the model methylotroph Methylobacterium extorquens AM1is able to grow poorly with methanol if exogenous lanthanides are added to the growth medium. When the gene encoding a putative quinoprotein ethanol dehydrogenase, exaF, was mutated in the MDH-3 background, the quadruple mutant strain could no longer grow on methanol in minimal medium with added lanthanum (La(3+))...
August 29, 2016: Journal of Bacteriology
H Shi, T Hussain, R Ahuja, T W Kang, W Luo
The magnetic properties and electronic structures of pure, doped and defective cerium oxide (CeO2) have been studied theoretically by means of ab initio calculations based on the density function theory (DFT) with the hybrid HF/DFT technique named PBE0. Carbon (C), nitrogen (N), phosphorus (P), sulphur (S), lanthanum (La) and praseodymium (Pr) doped in CeO2 and CeO2 containing oxygen vacancies (Ov) were considered. Our spin-polarized calculations show that C, N, Pr dopants and Ov defects magnetize the non-magnetic CeO2 in different degree...
2016: Scientific Reports
Mario Cozzolino, Michela Mangano, Lorenza Magagnoli, Luca Di Lullo, Andrea Galassi, Diego Brancaccio, Antonio Bellasi
Several factors influence the choice of phosphate binder for patients, including older age, male gender, post-menopause, diabetes, low bone turnover, vascular/valvular calcification and inflammation. Unlike calcium-based phosphate binders, non-calcium-based phosphate binders, such as sevelamer and lanthanum carbonate, have been able to reduce the progression of bone disease to adynamic bone among patients with CKD. New iron-based phosphate binders are now available. With multiple options available for the reduction of phosphate, the focus has been on agents that do not contain calcium...
July 2016: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
Simone Di Piazza, Grazia Cecchi, Anna Maria Cardinale, Cristina Carbone, Mauro Giorgio Mariotti, Marco Giovine, Mirca Zotti
Due to the wide range of applications in high-tech solutions, Rare Earth Elements (REEs) have become object of great interest. In the last years several studies regarding technologies for REE extraction from secondary resources have been carried out. In particular biotechnologies, which use tolerant and accumulator microorganisms to recover and recycle precious metals, are replacing traditional methods. This paper describes an original biometallurgical method to recover REEs from waste electrical and electronic equipment (WEEE) by using a strain of Penicillium expansum Link isolated from an ecotoxic metal contaminated site...
August 9, 2016: Waste Management
Kei Yabuki, Eisuke Shiba, Hiroshi Harada, Kazuyoshi Uchihashi, Atsuji Matsuyama, Joji Haratake, Masanori Hisaoka
Lanthanum carbonate (LC) is one of the most potent phosphate binders currently used to reduce serum phosphate levels in dialysis patients with end-stage renal disease (ESRD). LC forms insoluble complexes with dietary phosphate that pass through the gastrointestinal (GI) tract with little absorption. GI lesions due to lanthanum deposition in biopsy specimens or those in endoscopic submucosal dissection (ESD) in dialysis patients have been recently identified. Here, we describe more detailed histopathological findings in the gastroduodenal mucosa and regional lymph nodes in three patients with gastric cancer...
August 2, 2016: Pathology, Research and Practice
Alastair J Hutchison, Rosamund J Wilson, Svetlana Garafola, JBrian Copley
Despite 10 years of postmarketing safety monitoring of the phosphate binder lanthanum carbonate, concerns about aluminium-like accumulation and toxicity persist. Here we present a concise overview of the safety profile of lanthanum carbonate and interim results from a 5-year observational database study (SPD405-404; identifier: NCT00567723). The pharmacokinetic paradigms of lanthanum and aluminium are different in that lanthanum is minimally absorbed and eliminated via the hepatobiliary pathway, whereas aluminium shows appreciable absorption and is eliminated by the kidneys...
August 1, 2016: Nephrology
Manabu Tezura, Tokushi Kizuka
As the miniaturization of integrated circuits advances, electronics using single molecules and nanosize particles are being studied increasingly. Single nanoparticle junctions (SNPJs) consist of two electrodes sandwiching a single nanoparticle. Nanocarbons with nanospaces in their center, such as fullerenes, carbon nanotubes, and carbon nanocapsules (CNCs), are expected to be elements of advanced SNPJs. In this study, SNPJs were assembled using lanthanum dicarbide (LaC2)-encapsulating CNCs and two gold (Au) electrodes by a nanotip operation inside a high-resolution transmission electron microscope...
2016: Scientific Reports
Hiroaki Ogata, Masafumi Fukagawa, Hideki Hirakata, Hideaki Kaneda, Tatsuo Kagimura, Tadao Akizawa
BACKGROUND: Calcium (Ca)-based phosphate (P) binders, compared to non-Ca-based P binders, contribute to vascular calcification, which is associated with cardiovascular events. METHODS: The LANDMARK study is a multicenter, randomized, open-label, parallel comparative study of lanthanum carbonate (LC) and calcium carbonate (CC) in hemodialysis patients. Stable hemodialysis patients with intact parathyroid hormone ≤240 pg/mL meeting ≥1 of the following criteria (age >65 years, postmenopause, diabetes mellitus) were randomized into the LC and CC groups...
July 12, 2016: Clinical and Experimental Nephrology
Masaya Iwamuro, Hiromitzu Kanzaki, Takehiro Tanaka, Seiji Kawano, Yoshiro Kawahara, Hiroyuki Okada
A 77-year-old Japanese man underwent endoscopic submucosal dissection twice over a 5-year period for the treatment of two separate early gastric cancers. He had been taking lanthanum carbonate, an orally administered phosphate binder, for 3 years. Esophagogastroduodenoscopy revealed reddish mucosa in the greater curvature and anterior wall of the gastric angle, while granular, white deposits were also observed in some areas of this reddish mucosa. Additionally, biopsy specimens from the gastric mucosa revealed the deposition of fine, amorphous, eosinophilic material, which appeared bright on scanning electron microscopy...
July 2016: Nihon Shokakibyo Gakkai Zasshi, the Japanese Journal of Gastro-enterology
Kyoungsoo Kim, Taekyoung Lee, Yonghyun Kwon, Yongbeom Seo, Jongchan Song, Jung Ki Park, Hyunsoo Lee, Jeong Young Park, Hyotcherl Ihee, Sung June Cho, Ryong Ryoo
Three-dimensional graphene architectures with periodic nanopores—reminiscent of zeolite frameworks—are of topical interest because of the possibility of combining the characteristics of graphene with a three-dimensional porous structure. Lately, the synthesis of such carbons has been approached by using zeolites as templates and small hydrocarbon molecules that can enter the narrow pore apertures. However, pyrolytic carbonization of the hydrocarbons (a necessary step in generating pure carbon) requires high temperatures and results in non-selective carbon deposition outside the pores...
July 7, 2016: Nature
Irena Kolouchova, Karel Sigler, Michal Zimola, Tomas Rezanka, Olga Matatkova, Jan Masak
The growth of microorganisms is affected by cultivation conditions, concentration of carbon and nitrogen sources and the presence of trace elements. One of the new possibilities of influencing the production of cell mass or lipids is the use of lanthanides. Lanthanides are biologically non-essential elements with wide applications in technology and industry and their concentration as environmental contaminants is therefore increasing. Although non-essential, lanthanides have been proposed (and even used) to produce beneficial effects in plants but their mechanisms of action are unclear...
August 2016: World Journal of Microbiology & Biotechnology
José Ruiz Pardo, Noelia Ibáñez Cánovas, Jesús Abrisqueta Carrión, Juan Antonio Luján Mompeán, Pascual Parrilla Paricio
An 84-year-old woman presented to her local emergency department for abdominal pain. Her medical history included hemodialysis in the treatment of chronic renal failure, Parkinson's disease, chronic atrial fibrillation, chronic constipation, appendicectomy and cholecystectomy. The patient complained of diffuse abdominal pain for 4 days, associated with nausea and vomiting in the last 24 hours. Physical examination revealed a soft and depressible abdomen, diffusely painful, without signs of peritoneal irritation...
June 2016: Revista Española de Enfermedades Digestivas
Ross Robison, Danielle Cooney, Mary Beth Low, Niraj Desai
BACKGROUND: Hyperphosphatemia is a common problem in patients with chronic kidney disease (CKD). Calcium-containing phosphate binders are typically used as first-line therapy, primarily due to cost considerations. Non-calcium phosphate binders such as sevelamer and lanthanum may be considered in the appropriate setting. It is hypothesized that lanthanum is less costly and has a lower pill burden compared to sevelamer carbonate. OBJECTIVE: Determine the difference in cost (outcome 1) and tablet burden (outcome 2) between sevelamer carbonate and lanthanum within the Veteran population...
April 2016: Hospital Pharmacy
Nigar Sekercioglu, Lehana Thabane, Juan Pablo Díaz Martínez, Gihad Nesrallah, Christopher J Longo, Jason W Busse, Noori Akhtar-Danesh, Arnav Agarwal, Reem Al-Khalifah, Alfonso Iorio, Gordon H Guyatt
BACKGROUND: Chronic kidney disease-mineral and bone disorder (CKD-MBD) has been linked to poor health outcomes, including diminished quality and length of life. This condition is characterized by high phosphate levels and requires phosphate-lowering agents-phosphate binders. The objective of this systematic review is to compare the effects of available phosphate binders on patient-important outcomes in patients with CKD-MBD. METHODS: Data sources included MEDLINE and EMBASE Trials from 1996 to February 2016...
2016: PloS One
Christopher D Evans, Simon A Kondrat, Paul J Smith, Troy D Manning, Peter J Miedziak, Gemma L Brett, Robert D Armstrong, Jonathan K Bartley, Stuart H Taylor, Matthew J Rosseinsky, Graham J Hutchings
Gold and gold alloys, in the form of supported nanoparticles, have been shown over the last three decades to be highly effective oxidation catalysts. Mixed metal oxide perovskites, with their high structural tolerance, are ideal for investigating how changes in the chemical composition of supports affect the catalysts' properties, while retaining similar surface areas, morphologies and metal co-ordinations. However, a significant disadvantage of using perovskites as supports is their high crystallinity and small surface area...
July 4, 2016: Faraday Discussions
Martin Makombe, Charlton van der Horst, Bongiwe Silwana, Emmanuel Iwuoha, Vernon Somerset
A sensor for the adsorptive stripping voltammetric determination of rare earth elements has been developed. The electrochemical procedure is based on the oxidation of the rare earth elements complexed with alizarin complexone at a glassy carbon electrode that was in situ modified with an antimony film, during an anodic scan from -0.2 V to 1.1 V (vs. Ag/AgCl) and deposition potential of -0.1 V (vs. Ag/AgCl). The factors influencing the adsorptive stripping capability were optimised, including the complexing agent concentration, plating concentration of antimony and deposition time...
July 2, 2016: Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
Xinyong Tao, Jianguo Wang, Chong Liu, Haotian Wang, Hongbin Yao, Guangyuan Zheng, Zhi Wei Seh, Qiuxia Cai, Weiyang Li, Guangmin Zhou, Chenxi Zu, Yi Cui
Lithium-sulfur batteries have attracted attention due to their six-fold specific energy compared with conventional lithium-ion batteries. Dissolution of lithium polysulfides, volume expansion of sulfur and uncontrollable deposition of lithium sulfide are three of the main challenges for this technology. State-of-the-art sulfur cathodes based on metal-oxide nanostructures can suppress the shuttle-effect and enable controlled lithium sulfide deposition. However, a clear mechanistic understanding and corresponding selection criteria for the oxides are still lacking...
2016: Nature Communications
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"