keyword
MENU ▼
Read by QxMD icon Read
search

trace element

keyword
https://www.readbyqxmd.com/read/29236119/estimation-of-the-bioaccessibility-and-bioavailability-of-fe-mn-cu-and-zn-in-chinese-vegetables-using-the-in-vitro-digestion-caco-2-cell-model-the-influence-of-gut-microbiota
#1
Xiaolin Cai, Xiaochen Chen, Naiyi Yin, Huili Du, Guoxin Sun, Lihong Wang, Yudong Xu, Yuqing Chen, Yanshan Cui
The influence of the human gut microbiota on the bioaccessibility and bioavailability of trace elements in vegetables has barely been studied. An in vitro digestion model combining the physiologically based extraction test (PBET) and the Simulator of Human Intestinal Microbial Ecosystem (SHIME) was applied. Results showed that the gut microbiota increased the bioaccessibility of iron (Fe) in ten test vegetables by 1.3-1.8 times, but reduced the bioaccessibility of manganese (Mn), copper (Cu), and zinc (Zn) in vegetables in the colon phase by 3...
December 13, 2017: Food & Function
https://www.readbyqxmd.com/read/29236063/recent-advances-in-the-role-of-slc39a-zip-zinc-transporters-in-vivo
#2
REVIEW
Teruhisa Takagishi, Takafumi Hara, Toshiyuki Fukada
Zinc (Zn), which is an essential trace element, is involved in numerous mammalian physiological events; therefore, either a deficiency or excess of Zn impairs cellular machineries and influences physiological events, such as systemic growth, bone homeostasis, skin formation, immune responses, endocrine function, and neuronal function. Zn transporters are thought to mainly contribute to Zn homeostasis within cells and in the whole body. Recent genetic, cellular, and molecular studies of Zn transporters highlight the dynamic role of Zn as a signaling mediator linking several cellular events and signaling pathways...
December 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29235024/mill-pond-sediments-as-the-indicator-of-the-environment-of-the-drainage-area-an-example-of-liswarta-river-odra-basin-poland
#3
Maria Fajer, Martyna Anna Rzetala
The geochemical characteristics of sediments deposited within a channel-type reservoir situated behind the weir of a water mill on the River Liswarta (southern Poland) were studied in relation to land use in the catchment. The catchment in question is an agricultural one with large forest areas. The contamination of sediments with trace elements was assessed using the geoaccumulation index. The sediments studied were moderately to heavily contaminated with As, Cu, Co, Ni and Ba. They were also heavily contaminated with Sr...
December 12, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29234604/longitudinal-survey-of-lead-cadmium-and-copper-in-seagrass-syringodium-filiforme-from-a-former-bombing-range-vieques-puerto-rico
#4
Elba Díaz, Dustin Pérez, Johanna Delgado Acevedo, Arturo Massol-Deyá
Trace element composition in plant biomass could be used as an indicator of environmental stress, management practices and restoration success. A longitudinal study was conducted to compare Pb, Cd, and Cu content in seagrass Syringodium filiforme collected at a former bombing range in Puerto Rico with those of a Biosphere Reserve under similar geoclimatic conditions. Trace elements were measured by atomic absorption after dry-ashing of samples and extraction with acid. In general, levels of Pb, Cd, and Cu varied during 2001, 2003, 2005-2006, and 2013-2016...
2018: Toxicology Reports
https://www.readbyqxmd.com/read/29230645/pollution-evaluation-of-total-and-acid-leachable-trace-elements-in-surface-sediments-of-hooghly-river-estuary-and-sundarban-mangrove-wetland-india
#5
Priyanka Mondal, Amanda J Reichelt-Brushett, M P Jonathan, S B Sujitha, Santosh Kumar Sarkar
The present work investigated the spatial distribution and ecological risk assessment of total and mild acid-leachable trace elements in surface sediments (top 0-10 cm; grain size ≤ 63 μm) along the Hooghly (Ganges) River Estuary and Sundarban Mangrove Wetland, India. The trace elements, analyzed by ICPMS, showed wide range of variations with the following descending order (mean values expressed in milligrams per kilogram): Fe (25,050 ± 4918) > Al (16,992 ± 4172) > Mn (517 ± 102) > Zn (53 ± 18) > Cu (33 ± 11) > Cr (29 ± 7) > Ni (27 ± 6) > Pb (14 ± 3) > As (5 ± 1) > Se (0...
December 11, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29228828/trace-elements-profiles-of-maternal-blood-umbilical-cord-blood-and-placenta-in-beijing-china
#6
Cui Zhou, Ran Zhang, Xueping Cai, Rong Xiao, Yu Huanling
Profiles of heavy metals chromium (Cr), manganese (Mn), arsenic (As), lead (Pb), cadmium (Cd) and micronutrients ferrum (Fe), copper (Cu), zinc (Zn), selenium (Se) in maternal and umbilical cord blood clots were investigated for assessing placenta function in the transport of micronutrients or heavy metal pollutants. Correlations between contents of elements in the two tissues were also analyzed. Results demonstrated significantly lower levels of Cr, Pb and Cd in umbilical cord blood clots than in maternal blood clots, and negative relationship between lead levels in maternal and umbilical cord blood (r = -0...
December 11, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29228791/the-protective-effect-of-hydroalcoholic-extract-of-zingiber-officinale-roscoe-ginger-on-ethanol-induced-reproductive-toxicity-in-male-rats
#7
Abolfazl Akbari, Khadijeh Nasiri, Mojtaba Heydari, Seyed Hamdollah Mosavat, Aida Iraji
This study was conducted to evaluate the prophylactic effect of ginger extract on ethanol-induced reproductive toxicity in male rats. Twenty-eight adult male Sprague-Dawley rats were randomly divided into 4 groups and treated daily for 28 days as follows: control, control-ginger (1 g/kg of body weight [BW]/day by gavage), ethanol group (ethanol 4 g/kg of BW/day by gavage), and ginger-ethanol group. At the end of the experiment, all the rats were sacrificed and their testes were removed and used for measurement of the total homocysteine (tHcy), trace elements, antioxidant enzymes activity, and malondialdehyde (MDA)...
January 1, 2017: Journal of Evidence-based Complementary & Alternative Medicine
https://www.readbyqxmd.com/read/29227942/the-interaction-between-bacterial-abundance-and-selected-pollutants-concentration-levels-in-an-arctic-catchment-southwest-spitsbergen-svalbard
#8
Klaudia Kosek, Katarzyna Kozak, Krystyna Kozioł, Katarzyna Jankowska, Stanisław Chmiel, Żaneta Polkowska
Persistent organic pollutants (POPs) have been a topic of interest in environmental sciences for >60years. POPs in the Arctic have been investigated since the 1970s, when first atmospheric measurements revealed the presence of these pollutants in the polar regions. Major contaminant transport routes to the Arctic include atmospheric and oceanic transport, as well as inflow from rivers and sea ice. The sources of pollutants, such as industry, power generators, vehicle and ship exhausts, introduce the PAHs, phenols, formaldehyde or metals into the Arctic...
December 8, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29225993/determination-of-selected-metals-in-fruit-wines-by-spectroscopic-techniques
#9
Justyna Płotka-Wasylka, Małgorzata Rutkowska, Bartłomiej Cieślik, Alan Tyburcy, Jacek Namieśnik
Background: The determination of metals in different types of food and beverages samples has drawn significant attention due to several reasons with the most important one being the nutritional and toxic effects of these elements or their compounds. The knowledge of certain elements content in wines/fruit wines is of special interest due to their toxicity in case of excessive intake and also the effect they seem to have on the organoleptic properties of wine. Results: The study was focused on measuring the concentration levels of trace metals in fruit wines...
2017: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/29223909/implications-of-alteration-processes-on-radon-emanation-radon-production-rate-and-w-sn-exploration-in-the-panasqueira-ore-district
#10
Filipa Domingos, Alcides Pereira
Alteration processes have strong impacts on the chemical and physical properties of rock masses. Because they can affect the contents and the distribution of U as well as enhance the permeability of the bedrock, they may lead to a significant increase of radon release to the environment. However, their influence on radon emanation and radon production rate has yet to be properly assessed. To investigate the impact of alteration processes on the radiological properties, samples were collected in the Panasqueira region under the influence of surface weathering, deuteric, hydrothermal and fault related alteration...
December 7, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29222648/the-level-of-toxic-elements-in-edible-crops-from-seleniferous-area-punjab-india
#11
Margarita G Skalnaya, Sumit K Jaiswal, Ranjana Prakash, N Tejo Prakash, Andrei R Grabeklis, Irina V Zhegalova, Feng Zhang, Xiong Guo, Alexey A Tinkov, Anatoly V Skalny
The primary objective of the present study was to assess the level of selenium and toxic trace elements in wheat, rice, maize, and mustard from seleniferous areas of Punjab, India. The content of selenium (Se) and toxic trace elements, including aluminum (Al), arsenic (As), cadmium (Cd), mercury (Hg), nickel (Ni), lead (Pb), and tin (Sn), in crop samples was assessed using inductively coupled plasma mass-spectrometry after microwave digestion of the samples. The obtained data demonstrate that cultivation of crops on seleniferous soils significantly increased Se level in wheat, mustard, rice, and maize by a factor of more than 590, 111, 85, and 64, respectively...
December 8, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/29222096/aerobic-transformation-of-2-4-dinitrotoluene-by-escherichia-coli-and-its-implications-for-the-detection-of-trace-explosives
#12
Benjamin Shemer, Sharon Yagur-Kroll, Carina Hazan, Shimshon Belkin
DNT (2,4-dinitrotoluene), a volatile impurity in military grade TNT-based explosives, is a potential tracer for the detection of buried landmines and other explosive devices. We have previously described an Escherichia coli bioreporter strain engineered to detect traces of DNT, and have demonstrated that the yqjF gene promoter, the sensing element of this bioreporter, is induced not by DNT but by at least one of its transformation products. In the present study we have characterized the initial stages of DNT biotransformation in E...
December 8, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29221896/correlative-imaging-reveals-physiochemical-heterogeneity-of-microcalcifications-in-human-breast-carcinomas
#13
Jennie A M R Kunitake, Siyoung Choi, Kayla X Nguyen, Meredith M Lee, Frank He, Daniel Sudilovsky, Patrick G Morris, Maxine S Jochelson, Clifford A Hudis, David A Muller, Peter Fratzl, Claudia Fischbach, Admir Masic, Lara A Estroff
Microcalcifications (MCs) are routinely used to detect breast cancer in mammography. Little is known, however, about their materials properties and associated organic matrix, or their correlation to breast cancer prognosis. We combine histopathology, Raman microscopy, and electron microscopy to image MCs within snap-frozen human breast tissue and generate micron-scale resolution correlative maps of crystalline phase, trace metals, particle morphology, and organic matrix chemical signatures within high grade ductal carcinoma in situ (DCIS) and invasive cancer...
December 5, 2017: Journal of Structural Biology
https://www.readbyqxmd.com/read/29220760/historical-trace-element-accumulation-in-marine-sediments-from-the-tamaulipas-shelf-gulf-of-mexico-an-assessment-of-natural-vs-anthropogenic-inputs
#14
Omar Celis-Hernandez, Leticia Rosales-Hoz, Andrew B Cundy, Arturo Carranza-Edwards, Ian W Croudace, Hector Hernandez-Hernandez
The Gulf of Mexico is considered one of the world's major marine ecosystems, supporting important fisheries and habitats such as barrier islands, mangrove forests, seagrass beds, coral reefs etc. It also hosts a range of complex offshore petroleum exploration, extraction, and refining industries, which may have chronic or acute impacts on ecosystem functioning. Previous work on the marine effects of this activity is geographically incomplete, and has tended to focus on direct hydrocarbon impacts, while impacts from other related contaminants (e...
December 5, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29216515/strontium-incorporation-improves-the-bone-forming-ability-of-scaffolds-derived-from-porcine-bone
#15
Delin Cheng, Qingfei Liang, Yonggang Li, Jiahui Fan, Guocheng Wang, Haobo Pan, Changshun Ruan
Although heterogeneous bone scaffolds have shown potential in bone defect repair, their capability of aiding bone regeneration need to be further enhanced. Strontium, one important trace element in bone, has a well-known favorable effect on bone repair. Here a strontium containing scaffold (CPB/PCL/Sr) based on superficially porous calcined porcine bone (CPB) was obtained straightforwardly by sequential coating of SrCl2 and polycaprolactone (PCL). The basic characterization revealed that PCL coating could simultaneously improve the mechanical properties and, more importantly, restrain strontium release...
December 2, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29216463/application-of-double-focusing-sector-field-icp-ms-for-determination-of-ultratrace-constituents-in-samples-characterized-by-complex-composition-of-the-matrix
#16
Ilia Rodushkin, Cora Paulukat, Simon Pontér, Emma Engström, Douglas C Baxter, Dieke Sörlin, Nicola Pallavicini, Katerina Rodushkina
The performance of double focusing, sector field mass spectrometry (ICP-SFMS) for determination of analytes, including technology critical elements (TCE), at ultra-trace levels in environmental and clinical matrices was critically evaluated. Different configurations of the ICP-SFMS introduction system as well as various sample preparations, pre-concentration and matrix separation methods were employed and compared. Factors affecting detection capabilities and accuracy of data produced (instrumental sensitivity, contamination risks, purity of reagents, spectral interferences, matrix effects, analyte recovery and losses) were discussed...
December 4, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29214499/microbial-degradation-of-forensic-samples-of-biological-origin-potential-threat-to-human-dna-typing
#17
REVIEW
Hirak Ranjan Dash, Surajit Das
Forensic biology is a sub-discipline of biological science with an amalgam of other branches of science used in the criminal justice system. Any nucleated cell/tissue harbouring DNA, either live or dead, can be used as forensic exhibits, a source of investigation through DNA typing. These biological materials of human origin are rich source of proteins, carbohydrates, lipids, trace elements as well as water and, thus, provide a virtuous milieu for the growth of microbes. The obstinate microbial growth augments the degradation process and is amplified with the passage of time and improper storage of the biological materials...
December 6, 2017: Molecular Biotechnology
https://www.readbyqxmd.com/read/29213161/comparison-of-pixe-and-xrf-in-the-analysis-of-silver-denarii-of-the-early-piast
#18
Janusz Lekki, Marta Matosz, Czesława Paluszkiewicz, Ewa Pięta, Tomasz Pieprzyca, Zbigniew Szklarz, Julio M Del Hoyo Meléndez
The collection of denarii from the time of development of a Polish medieval state was studied using the proton induced X-ray emission spectroscopy. The major elements detected for these denarii are Ag and Cu, while minor elements such as Pb, Fe, Au, Bi, and Zn may also be present. The aim of the study was to cross-compare the results with a previous micro-X-ray fluorescence data and to perform a better quantification of the denarii elemental composition, especially for trace elements, providing suggestions of the origin of alloy compounds...
2017: Journal of Radioanalytical and Nuclear Chemistry
https://www.readbyqxmd.com/read/29212231/zbp-89-function-in-colonic-stem-cells-and-during-butyrate-induced-senescence
#19
Ramon Ocadiz-Ruiz, Amanda L Photenhauer, Michael M Hayes, Lin Ding, Eric R Fearon, Juanita L Merchant
ZBP-89 (Zfp148, ZNF148) is a Kruppel-type zinc-finger family transcription factor that binds to GC-rich DNA elements. Earlier studies in cell lines demonstrated that ZBP-89 cooperates with Wnt β-catenin signaling by inducing β-catenin gene expression. Since β-catenin levels are normally highest at the crypt base, we examined whether ZBP-89 is required for stem cell maintenance. Lineage-tracing using a Zfp148CreERT2 transgenic line demonstrated expression in both intestine and colonic stem cells. Deleting the Zfp148 locus in the colon using the Cdx2NLSCreERT2 transgene, reduced the size and number of polyps formed in the Apc-deleted mice...
November 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/29211357/oxidative-stress-parameters-in-patients-with-prostate-cancer-benign-prostatic-hyperplasia-and-asymptomatic-inflammatory-prostatitis-a-prospective-controlled-study
#20
Engin Kaya, Yasar Ozgok, Murat Zor, Ayse Eken, Selahattin Bedir, Onur Erdem, Turgay Ebiloglu, Giray Ergin
BACKGROUND: The imbalance between oxidant and reductant mechanisms creates a nidus for the etiopathogenesis of several diseases. In this study, we aimed to compare the oxidative stress (OS) parameters in patients who were diagnosed with prostate cancer (pCa), benign prostatic hyperplasia (BPH) or asymptomatic inflammatory prostatitis (AIP), according to the histopathologic examination of transrectal ultrasonographic prostate biopsy and transurethral prostate resection specimens. OBJECTIVES: In this study, we aimed to compare oxidative stress between histologically proven prostate cancer, hyperplasia and prostatitis...
October 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
keyword
keyword
33368
1
2
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"