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Phosphorus

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https://www.readbyqxmd.com/read/28728391/dietary-maifanite-supplementation-did-not-affect-the-apparent-total-tract-digestibility-of-calcium-and-phosphorus-in-growing-pigs
#1
Lili Bai, Dongxu Ming, Shuren Dong, Zhongyue Yang, Wenhui Wang, Shuai Zhang, Xiangshu Piao, Ling Liu, Fenglai Wang
Objective: This study was conducted to determine the effects of dietary maifanite supplementation and fecal collection method on the apparent total tract digestibility (ATTD) of calcium (Ca) and phosphorus (P) and blood parameters in growing pigs. Methods: Thirty-six growing barrows (Duroc×Landrace×Yorkshire;27.0±2.6 kg) were allotted to six dietary treatments with 6 pigs per treatment according to body weight in a completely randomized design. The experimental treatments were: (1) Low Ca+cornstarch (2...
May 14, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728124/thin-ferrihydrite-sediment-capping-sequestrates-phosphorus-experiencing-redox-conditions-in-a-shallow-temperate-lacustrine-wetland
#2
Yuanchun Zou, Michael R Grace, Keryn L Roberts, Xiaofei Yu
Synthesized ferrihydrite (Fh) with the dosages of 0.3, 0.6 and 0.9 cm thickness (labeled as Fh, 2Fh and 3Fh respectively, equivalent to 248-774 g/m(2)) were deployed to serve as the reactive capping layer covering the Ornamental Lake sediments, the Royal Botanic Garden of Melbourne. The sediments were exposed to an alternating regime of oxic/anoxic conditions using laboratory reactors for 45 days. Dynamics of dissolved oxygen (DO), pH, filterable reactive phosphorus (FRP), filterable ammonium (NH4(+)), nitrate and nitrite (NOx), total dissolved nitrogen (TDN) and dissolved iron (Fe) of overlying water were examined...
July 12, 2017: Chemosphere
https://www.readbyqxmd.com/read/28728116/response-of-soil-physico-chemical-properties-to-restoration-approaches-and-submergence-in-the-water-level-fluctuation-zone-of-the-danjiangkou-reservoir-china
#3
Xiao Shu, KeRong Zhang, QuanFa Zhang, WeiBo Wang
With the completion of the Danjiangkou Dam, the impoundment and drainage of dams can significantly alter shorelines, hydrological regime, and sediment and can result in the loss of soil and original riparian vegetation. Revegetation may affect soil properties and have broad important implications both for ecological services and soil recovery. In this work, we investigated the soil properties under different restoration approaches, and before and after submergence in the water level fluctuation zone (WLFZ) of the Danjiangkou Reservoir...
July 17, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28727444/fosfomycin-biosynthesis-via-transient-cytidylylation-of-2-hydroxyethylphosphonate-by-the-bifunctional-fom1-enzyme
#4
Su-Hee Cho, Seung-Young Kim, Takeo Tomita, Taro Shiraishi, Jin-Soo Park, Shusuke Sato, Fumitaka Kudo, Tadashi Eguchi, Nobutaka Funa, Makoto Nishiyama, Tomohisa Kuzuyama
Fosfomycin is a wide-spectrum phosphonate antibiotic that is used clinically to treat cystitis, tympanitis, etc. Its biosynthesis starts with the formation of a carbon-phosphorus bond catalyzed by the phosphoenolpyruvate phosphomutase Fom1. We identified an additional cytidylyltransferase (CyTase) domain at the Fom1 N-terminus in addition to the phosphoenolpyruvate phosphomutase domain at the Fom1 C-terminus. Here, we demonstrate that Fom1 is bifunctional and that the Fom1 CyTase domain catalyzes the cytidylylation of the 2-hydroxyethylphosphonate (HEP) intermediate to produce cytidylyl-HEP...
July 20, 2017: ACS Chemical Biology
https://www.readbyqxmd.com/read/28727296/chitosan-fe-iii-complex-as-a-phosphate-chelator-in-uraemic-rats-a-novel-treatment-option
#5
Wander Barros do Carmo, Bárbara Bruna Abreu Castro, Clóvis Antônio Rodrigues, Melani Ribeiro Custódio, Helady Sanders-Pinheiro
Phosphate retention and hyperphosphataemia are associated with increased mortality in chronic kidney disease (CKD) patients. We tested the use of cross-linked iron chitosan III (CH-FeCl) as a potential phosphate chelator in rats with CKD. We evaluated 96 animals, divided equally into 4 groups (control, CKD, CH-FeCl, and CKD/CH-FeCl), over 7 weeks. We induced CKD by feeding animals an adenine-enriched diet (0.75% in the first 4 weeks and 0.1% in the following 3 weeks). We administered 30 mg/kg daily of the test polymer, by gavage, from the third week until the end of the study...
July 20, 2017: Basic & Clinical Pharmacology & Toxicology
https://www.readbyqxmd.com/read/28727029/effects-of-graded-levels-of-microbial-phytase-on-apparent-total-tract-digestibility-of-calcium-and-phosphorus-and-standardized-total-tract-digestibility-of-phosphorus-in-four-sources-of-canola-meal-and-in-soybean-meal-fed-to-growing-pigs
#6
Y She, Y Liu, H H Stein
One hundred twenty pigs were used to determine effects of graded levels of microbial phytase on the apparent total tract digestibility (ATTD) of P and Ca and the standardized total tract digestibility (STTD) of P in 4 sources of canola meal and in 1 source of soybean meal (SBM) fed to growing pigs. The 4 sources of canola meal were produced from 1 source of high-protein canola seeds and 2 sources of conventional canola seeds with 1 of the conventional canola seeds being divided into 2 separate batches before crushing...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726985/influence-of-dietary-crude-protein-and-phosphorus-on-ileal-digestion-of-phosphorus-and-amino-acids-in-growing-pigs
#7
P C Xue, D Ragland, O Adeola
A study was conducted to investigate the effect of dietary CP levels on ileal P digestion in growing pigs. A total of 18 ileal-cannulated pigs (44.2 ± 3.2 kg initial BW) were used in a duplicated 9 × 3 incomplete Latin square design, with 9 treatments and three 7-d experimental periods giving 6 replicates per treatment. The 9 treatments consisted of 1 N-free diet to estimate basal endogenous loss of AA and 8 corn-soybean meal-based diets in a 2 × 4 factorial arrangement, which included 2 CP levels (6.9 or 13...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28726706/cost-assessment-of-different-routes-for-phosphorus-recovery-from-wastewater-using-data-from-pilot-and-production-plants
#8
A Nättorp, K Remmen, C Remy
Phosphorus (P) recovery from wastewater has considerable potential to supplement limited fossil P reserves. Reliable cost data are essential for investor and policymaker decisions. In this study, investment and operational costs for nine P recovery processes were calculated from the investor's perspective, taking into account all relevant side effects on the sludge treatment or the wastewater treatment plant. The assessment was based on pilot and full-scale data which were thoroughly consolidated and standardized with technical and cost data from the German wastewater-sludge treatment train to enable direct comparison...
July 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28726705/spatiotemporal-distribution-of-nitrogen-and-phosphorus-in-alpine-lakes-in-the-sanjiangyuan-region-of-the-tibetan-plateau
#9
Su-Jin Lu, Jian-Huan Si, Chuan-Ying Hou, Yu-Si Li, Meng-Meng Wang, Xiao-Xia Yan, Meng Xie, Jin-Xu Sun, Bai-Jie Chen, Shu-Sen Li
To provide a theoretical basis for alpine source lake protection, ten samples were taken from each lake annually from 2012 to 2015. Each year, the various species of nitrogen and phosphorus nutrients were measured. The average contents of nitrate nitrogen, ammonia nitrogen, nitrite nitrogen, total phosphorus, and total nitrogen in the four lakes are 0.195-0.0 mg/L, 0.038-0.143 mg/L, 0.004-0.168 mg/L, 0.006-0.740 mg/L, and 0.050-0.547 mg/L, respectively. The total phosphorus contents in Eling Lake, Longbao Lake and Sea Star were higher than Class I water quality standards, and the total nitrogen contents in Eling Lake, Sea Star and Zhaling Lake were higher than Class I water quality standards as well...
July 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28726227/modelling-the-effects-of-water-diversion-and-combined-sewer-overflow-on-urban-inland-river-quality
#10
Xianyong Gu, Zhenliang Liao, Guangqian Zhang, Jiaqiang Xie, Jin Zhang
In order to assist and optimize the operation of a clean water diversion project for the medium-sized inland rivers in Chaohu, China, an integrated hydrodynamic and water quality model was used in this study. Sixteen diversion scenarios and five sewage interception scenarios were defined to assess the improvement of water quality parameters including ammonia nitrogen (NH3-N), total phosphorus (TP) and chemical oxygen demand (COD) under different diverted water flows, diverting times, diverting points, diverting routines and sewage interception proportions...
July 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28726224/spatial-scale-and-seasonal-dependence-of-land-use-impacts-on-riverine-water-quality-in-the-huai-river-basin-china
#11
Jianfeng Liu, Xiang Zhang, Bi Wu, Guoyan Pan, Jing Xu, Shaofei Wu
Land use pattern is an effective reflection of anthropic activities, which are primarily responsible for water quality deterioration. A detailed understanding of relationship between water quality and land use is critical for effective land use management to improve water quality. Linear mixed effects and multiple regression models were applied to water quality data collected from 2003 to 2010 from 36 stations in the Huai River basin together with topography and climate data, to characterize the land use impacts on water quality and their spatial scale and seasonal dependence...
July 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28726174/comparative-study-of-the-effects-of-a-small-scale-trout-farm-on-the-macrozoobenthos-potamoplankton-and-epilithic-diatom-communities
#12
K Stojanović, M Živić, Z Dulić, Z Marković, J Krizmanić, Dj Milošević, B Miljanović, J Jovanović, D Vidaković, I Živić
Trout farms are one of the major sources of pollution of highland streams and rivers, which are very sensitive ecosystems otherwise scarcely influenced by human activities. A trout farm with low annual production was chosen for comparative monitoring of its effects on the macrozoobenthos, epilithic diatom, and potamoplankton communities in the receiving stream. Research was conducted every 2 months during a period of 1 year (one control point and three localities downstream from the farm). The fish farm discharge induced moderate alteration of environmental factors in the receiving watercourse, viz...
August 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28726134/non-functioning-parathyroid-carcinoma-a-case-report
#13
Nobuyasu Suganuma, Hiroyuki Iwasaki, Satoru Shimizu, Tatsuya Yoshida, Takashi Yamanaka, Izumi Kojima, Haruhiko Yamazaki, Soji Toda, Hirotaka Nakayama, Katsuhiko Masudo, Yasushi Rino, Kae Kawachi, Yohei Miyagi, Akio Miyake, Kenichi Ohashi, Munetaka Masuda
BACKGROUND: Non-functioning parathyroid carcinoma is a rare disease that is difficult to distinguish from other diseases based on the lack of hyperparathyroidism. This is a report of non-functioning parathyroid carcinoma diagnosed by reverse transcription polymerase chain reaction (RT-PCR) targeting parathyroid hormone (PTH) messenger RNA. CASE PRESENTATION: The patient is a 67-year-old male who visited our hospital for the chief complaint of hoarseness. A 5-cm mass was observed in the right lobe of the thyroid gland, and poorly differentiated thyroid carcinoma was suspected according to the fine-needle biopsy results...
December 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/28726128/on-the-response-of-the-baltic-proper-to-changes-of-the-total-phosphorus-supply
#14
Anders Stigebrandt
Using a time-dependent phosphorus (P) budget model for the Baltic proper, describing sources and sinks at the external borders of the water column, one may compute the e-folding time T of the adjustment of the winter surface water P concentration c 1 to abruptly changed total P supply. The restoration time TR = 3T is introduced as a practical measure of the time it takes to achieve 95% of the change of c 1 towards the final, equilibrium, state c 1e. The P budget model, including an internal source emanating from deep anoxic bottoms, also shows that c 1e is proportional to the total P supply to the water column...
July 19, 2017: Ambio
https://www.readbyqxmd.com/read/28725961/the-plasma-membrane-proteome-of-medicago-truncatula-roots-as-modified-by-arbuscular-mycorrhizal-symbiosis
#15
Achref Aloui, Ghislaine Recorbet, Christelle Lemaître-Guillier, Arnaud Mounier, Thierry Balliau, Michel Zivy, Daniel Wipf, Eliane Dumas-Gaudot
In arbuscular mycorrhizal (AM) roots, the plasma membrane (PM) of the host plant is involved in all developmental stages of the symbiotic interaction, from initial recognition to intracellular accommodation of intra-radical hyphae and arbuscules. Although the role of the PM as the agent for cellular morphogenesis and nutrient exchange is especially accentuated in endosymbiosis, very little is known regarding the PM protein composition of mycorrhizal roots. To obtain a global overview at the proteome level of the host PM proteins as modified by symbiosis, we performed a comparative protein profiling of PM fractions from Medicago truncatula roots either inoculated or not with the AM fungus Rhizophagus irregularis...
July 19, 2017: Mycorrhiza
https://www.readbyqxmd.com/read/28725949/tubulointerstitial-nephritis-induced-hypophosphatemic-osteomalacia-in-sj%C3%A3-gren-s-syndrome-a-case-report-and-review-of-the-literature
#16
REVIEW
Yan Geng, Youlu Zhao, Zhuoli Zhang
Sjögren's syndrome (SS) is a chronic autoimmune inflammatory disease that typically affects the salivary and lacrimal glands. Renal involvement is relatively uncommon and may precede other complaints. Tubulointestitial nephritis (TIN) is the most common renal involvement in SS. Osteomalacia occurring as the first manifestation of renal tubular disorder due to SS is very rare. We report a 39-year-old male who presented with polydipsia, polyuria, and multiple bone pain. Bone density test showed severe osteoporosis, and laboratory findings suggested hypokalemia, hypophosphatemia, and vitamin D deficiency, which supported the diagnosis of hypophosphatemic osteomalacia...
July 20, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28725403/potential-and-limitations-of-inferring-ecosystem-photosynthetic-capacity-from-leaf-functional-traits
#17
Talie Musavi, Mirco Migliavacca, Martine Janet van de Weg, Jens Kattge, Georg Wohlfahrt, Peter M van Bodegom, Markus Reichstein, Michael Bahn, Arnaud Carrara, Tomas F Domingues, Michael Gavazzi, Damiano Gianelle, Cristina Gimeno, André Granier, Carsten Gruening, Kateřina Havránková, Mathias Herbst, Charmaine Hrynkiw, Aram Kalhori, Thomas Kaminski, Katja Klumpp, Pasi Kolari, Bernard Longdoz, Stefano Minerbi, Leonardo Montagnani, Eddy Moors, Walter C Oechel, Peter B Reich, Shani Rohatyn, Alessandra Rossi, Eyal Rotenberg, Andrej Varlagin, Matthew Wilkinson, Christian Wirth, Miguel D Mahecha
The aim of this study was to systematically analyze the potential and limitations of using plant functional trait observations from global databases versus in situ data to improve our understanding of vegetation impacts on ecosystem functional properties (EFPs). Using ecosystem photosynthetic capacity as an example, we first provide an objective approach to derive robust EFP estimates from gross primary productivity (GPP) obtained from eddy covariance flux measurements. Second, we investigate the impact of synchronizing EFPs and plant functional traits in time and space to evaluate their relationships, and the extent to which we can benefit from global plant trait databases to explain the variability of ecosystem photosynthetic capacity...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28725361/spatial-heterogeneity-distribution-of-soil-total-nitrogen-and-total-phosphorus-in-the-yaoxiang-watershed-in-a-hilly-area-of-northern-china-based-on-geographic-information-system-and-geostatistics
#18
Yu Liu, Peng Gao, Liyong Zhang, Xiang Niu, Bing Wang
Soil total nitrogen (STN) and total phosphorus (STP) are important indicators of soil nutrients and the important indexes of soil fertility and soil quality evaluation. Using geographic information system (GIS) and geostatistics, the spatial heterogeneity distribution of STN and STP in the Yaoxiang watershed in a hilly area of northern China was studied. The results showed that: (1) The STN and STP contents showed a declining trend with the increase in soil depth; the variation coefficients (Cv) of STN and STP in the 0- to 10-cm soil layer (42...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28725152/analysis-of-inorganic-and-organic-constituents-of-myrrh-resin-by-gc-ms-and-icp-ms-an-emphasis-on-medicinal-assets
#19
Syed Rizwan Ahamad, Abdul Rahman Al-Ghadeer, Raisuddin Ali, Wajhul Qamar, Suliman Aljarboa
The aim of the present investigation was to explore the constituents of the Arabian myrrh resin obtained from Commiphora myrrha. The organic and inorganic composition of the myrrh gum resin has been investigated using gas chromatography-mass spectrometry (GC-MS) and inductively coupled plasma-mass spectrometry (ICP-MS). Analysis executed by ICP-MS reveals the presence of various inorganic elements in significant amount in the myrrh resin. The elements that were found to be present in large amounts include calcium, magnesium, aluminum, phosphorus, chlorine, chromium, bromine and scandium...
July 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28725017/stoichiometry-of-natural-bacterial-assemblages-from-lakes-located-across-an-elevational-gradient
#20
Birgit Stenzel, Carina Rofner, Maria Teresa Pérez, Ruben Sommaruga
Heterotrophic bacteria are thought to be phosphorus-rich organisms with relatively homeostatic stoichiometry, but the elemental composition of natural bacterial communities has rarely been assessed. Here we tested whether bacterial stoichiometry changes with the trophic status of lakes by assessing the elemental composition of the bacterial-dominated (hereafter microbial) fraction together with that of the dissolved and seston fractions in 11 lakes situated along an elevational gradient. The stoichiometry of these three size-fractions was analyzed during the thermal stratification and mixing periods in composite water samples and in the water layer of the deep chlorophyll-a maximum...
July 19, 2017: Scientific Reports
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