1
|
Bradham KD, Nelson CM, Diamond GL, Thayer WC, Scheckel KG, Noerpel M, Herbin-Davis K, Elek B, Thomas DJ. Dietary Lead and Phosphate Interactions Affect Oral Bioavailability of Soil Lead in the Mouse. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:12556-12564. [PMID: 31557437 PMCID: PMC8188726 DOI: 10.1021/acs.est.9b02803] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Effects of dietary P level on the oral bioavailability of Pb present in soil were examined in a mouse model. Adult female C57BL/6 mice had free access to AIN-93G purified rodent diet amended with Pb as a soluble salt, Pb acetate, or in a soil matrix (NIST SRM 2710a). In these studies, the basal diet contained P at a nutritionally sufficient level (0.3% w/w) and the modified diets contained P at a lower (0.15%) or a higher (1.2%) level. For either dietary Pb source (Pb acetate or NIST SRM 2710a), low dietary P level markedly increased accumulation of Pb in bone, blood, and kidney. Tissue Pb levels in mice fed a high P in diet were not different from mice fed the basal P diet. Dietary P and Pb interacted to affect body weight change and feed efficiency in mice. The relative contribution of different Pb species in diet and feces was also affected by dietary P level. Differences in Pb species between diet and feces indicated that transformation of Pb species can occur during gastrointestinal tract transit. These interactions between Pb and P that alter Pb speciation may be important determinants of the bioavailability of Pb ingested in soil.
Collapse
Affiliation(s)
- Karen D Bradham
- Office of Research and Development , United States Environmental Protection Agency , Research Triangle Park , Durham , North Carolina 27711 , United States
| | - Clay M Nelson
- Office of Research and Development , United States Environmental Protection Agency , Research Triangle Park , Durham , North Carolina 27711 , United States
| | - Gary L Diamond
- SRC, Inc. , North Syracuse , New York 13212 , United States
| | | | - Kirk G Scheckel
- Office of Research and Development , United States Environmental Protection Agency , Cincinnati , Ohio 45224 , United States
| | - Matt Noerpel
- Office of Research and Development , United States Environmental Protection Agency , Cincinnati , Ohio 45224 , United States
| | - Karen Herbin-Davis
- Pharmacokinetics Branch, Integrated Systems Toxicology Division , National Health and Environmental Effects Laboratory, ORD, US EPA, RTP, NC , Durham , North Carolina 27709 , United States
| | - Brittany Elek
- Pharmacokinetics Branch, Integrated Systems Toxicology Division , National Health and Environmental Effects Laboratory, ORD, US EPA, RTP, NC , Durham , North Carolina 27709 , United States
| | - David J Thomas
- Pharmacokinetics Branch, Integrated Systems Toxicology Division , National Health and Environmental Effects Laboratory, ORD, US EPA, RTP, NC , Durham , North Carolina 27709 , United States
| |
Collapse
|
2
|
Chanphai P, Bourassa P, Kanakis C, Tarantilis P, Polissiou M, Tajmir-Riahi H. Review on the loading efficacy of dietary tea polyphenols with milk proteins. Food Hydrocoll 2018. [DOI: 10.1016/j.foodhyd.2017.10.008] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
|
3
|
Capcarova M, Harangozo L, Toth T, Schwarczova L, Bobkova A, Stawarz R, Guidi A, Massanyi P. Detection of selected trace elements in yogurt components. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2017; 52:858-863. [PMID: 28937856 DOI: 10.1080/03601234.2017.1359029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The objective of this study was to determine the concentrations of Cu, Cd, Pb, Mn, Cr, Co, Ni, Zn, and Hg in the white and fruit parts of commercially available yogurts (n = 30) from Nitra markets (Slovak Republic). The results were correlated to determine their relationships. Three yogurt fruit flavors were chosen and tested, strawberry (n = 10), blueberry (n = 10), and cherry (n = 10). The elements were analyzed using atomic absorption spectrophotometry. Higher concentrations of toxic elements, such as Cd and Pb, were found in the fruit parts of the yogurt, and in some cases, the tolerable limit was exceeded. The white part of the yogurt was not contaminated by toxic elements. White yogurt is a good source of nutrients for humans, but the fruit part in yogurt requires detailed monitoring and improvements in the processing techniques.
Collapse
Affiliation(s)
- Marcela Capcarova
- a Department of Animal Physiology, Faculty of Biotechnology and Food Sciences , Slovak University of Agriculture in Nitra , Nitra , Slovak Republic
| | - Lubos Harangozo
- b Department of Chemistry, Faculty of Biotechnology and Food Sciences , Slovak University of Agriculture in Nitra , Nitra , Slovak Republic
| | - Tomas Toth
- b Department of Chemistry, Faculty of Biotechnology and Food Sciences , Slovak University of Agriculture in Nitra , Nitra , Slovak Republic
| | - Loretta Schwarczova
- c Department of European Policies, Faculty of European Studies and Regional Development , Slovak University of Agriculture in Nitra , Nitra , Slovak Republic
| | - Alica Bobkova
- d Department of Food Hygiene and Safety, Faculty of Biotechnology and Food Sciences , Slovak University of Agriculture in Nitra , Nitra , Slovak Republic
| | - Robert Stawarz
- e Institute of Biology, Pedagogical University of Cracow , Cracow , Poland
| | - Alessandra Guidi
- f Department of Veterinary Sciences , University of Pisa , Pisa , Italy
| | - Peter Massanyi
- a Department of Animal Physiology, Faculty of Biotechnology and Food Sciences , Slovak University of Agriculture in Nitra , Nitra , Slovak Republic
| |
Collapse
|
4
|
Noori N, Noudoost B, Hatami Nia M. The assessment of lead pollution in milk collected from all dairy farms in Lorestan province, Iran. TOXIN REV 2016. [DOI: 10.1080/15569543.2016.1225768] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
5
|
Sisombath NS, Jalilehvand F. Similarities between N-Acetylcysteine and Glutathione in Binding to Lead(II) Ions. Chem Res Toxicol 2015; 28:2313-24. [PMID: 26624959 DOI: 10.1021/acs.chemrestox.5b00323] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
N-Acetylcysteine is a natural thiol-containing antioxidant, a precursor for cysteine and glutathione, and a potential detoxifying agent for heavy metal ions. However, previous accounts of the efficiency of N-acetylcysteine (H2NAC) in excretion of lead are few and contradicting. Here, we report results on the nature of lead(II) complexes formed with N-acetylcysteine in aqueous solution, which were obtained by combining information from several spectroscopic methods, including (207)Pb, (13)C, and (1)H NMR, Pb LIII-edge X-ray absorption, ultraviolet-visible (UV-vis) spectroscopy, and electro-spray ionization mass spectrometry (ESI-MS). Two series of solutions were used containing CPb(II) = 10 and 100 mM, respectively, varying the H2NAC/Pb(II) mole ratios from 2.1 to 10.0 at pH 9.1-9.4. The coordination environments obtained resemble those previously found for the Pb(II) glutathione system: at a ligand-to-lead mole ratio of 2.1, dimeric or oligomeric Pb(II) N-acetylcysteine complexes are formed, while a trithiolate [Pb(NAC)3](4-) complex dominates in solutions with H2NAC/Pb(II) mole ratios >3.0.
Collapse
Affiliation(s)
- Natalie S Sisombath
- Department of Chemistry, University of Calgary , 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Farideh Jalilehvand
- Department of Chemistry, University of Calgary , 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| |
Collapse
|
6
|
Toxic trace elements at gastrointestinal level. Food Chem Toxicol 2015; 86:163-75. [PMID: 26482641 DOI: 10.1016/j.fct.2015.10.006] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 10/08/2015] [Accepted: 10/11/2015] [Indexed: 11/22/2022]
Abstract
Many trace elements are considered essential [iron (Fe), zinc (Zn), copper (Cu)], whereas others may be harmful [lead (Pb), cadmium (Cd), mercury (Hg), arsenic (As)], depending on their concentration and chemical form. In most cases, the diet is the main pathway by which they enter our organism. The presence of toxic trace elements in food has been known for a long time, and many of the food matrices that carry them have been identified. This has led to the appearance of legislation and recommendations concerning consumption. Given that the main route of exposure is oral, passage through the gastrointestinal tract plays a fundamental role in their entry into the organism, where they exert their toxic effect. Although the digestive system can be considered to be of crucial importance in their toxicity, in most cases we do not know the events that occur during the passage of these elements through the gastrointestinal tract and of ascertaining whether they may have some kind of toxic effect on it. The aim of this review is to summarize available information on this subject, concentrating on the toxic trace elements that are of greatest interest for organizations concerned with food safety and health: Pb, Cd, Hg and As.
Collapse
|
7
|
Er C, Filiz Senkal B, Yaman M. Determination of lead in milk and yoghurt samples by solid phase extraction using a novel aminothioazole-polymeric resin. Food Chem 2013. [DOI: 10.1016/j.foodchem.2012.10.013] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
8
|
Ashton L, Johannessen C, Goodacre R. The importance of protonation in the investigation of protein phosphorylation using Raman spectroscopy and Raman optical activity. Anal Chem 2011; 83:7978-83. [PMID: 21919468 DOI: 10.1021/ac202041f] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The effect of protonation on amino acid monomers and protein phosphorylation was studied by means of a combination of Raman scattering and Raman optical activity (ROA). In the past, identifying spectral variations in phosphorylated proteins arising from either the phosphate stretch or amide vibrational modes has proven to be challenging mainly due to the loss of amide and P═O band intensity in the presence of phosphate. By contrast, we have developed a novel strategy based on the careful monitoring of the sample pH and thereby modified the protonation state, such that these difficulties can be overcome and phosphate-derived vibrations are readily visualized with both Raman and ROA. Variations in pH-dependent spectral sets of phosphorylated amino acid monomers serine and threonine demonstrated that the protonation state could be determined by the intensity of the monobasic (-OPO(3)H(-)) phosphate stretch band occurring at ~1080 cm(-1) versus the dibasic (-OPO(3)(2-)) band measured at ~980 cm(-1) in both Raman and ROA. Furthermore, by adjustment of the pH of aqueous samples of the phosphoprotein α-casein and comparing this result with dephosphorylated α-casein, spectral variations in phosphate stretch bands and amide bands could be easily determined. Consequently, structural variations due to both protonation and dephosphorylation could be distinguished, demonstrating the potential of Raman and ROA for future investigations of phosphoprotein structure and interactions.
Collapse
Affiliation(s)
- Lorna Ashton
- School of Chemistry, Manchester Interdisciplinary Biocentre, University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK.
| | | | | |
Collapse
|
9
|
|