Investigation of uranium interactions with calcium phosphate-binding proteins using ICP/MS and CE-ICP/MS

Metallomics ◽  
2016 ◽  
Vol 8 (11) ◽  
pp. 1185-1192 ◽  
Author(s):  
Thi-Ngoc Suong Huynh ◽  
Claude Vidaud ◽  
Agnès Hagège
2018 ◽  
Vol 1 ◽  
pp. 100003 ◽  
Author(s):  
Kaushik Venkiteshwaran ◽  
Nilisha Pokhrel ◽  
Faten Hussein ◽  
Edwin Antony ◽  
Brooke K. Mayer

2017 ◽  
Vol 105 (8) ◽  
pp. 2335-2342 ◽  
Author(s):  
Alessandro Polini ◽  
Daniela Geta Petre ◽  
Michele Iafisco ◽  
Sonia de Lacerda Schickert ◽  
Anna Tampieri ◽  
...  

2015 ◽  
Vol 14 (3) ◽  
pp. 875-886 ◽  
Author(s):  
Emily E. Helliwell ◽  
Julio Vega-Arreguín ◽  
Zi Shi ◽  
Bryan Bailey ◽  
Shunyuan Xiao ◽  
...  

2013 ◽  
Vol 104 (2) ◽  
pp. 405a ◽  
Author(s):  
Mathias Gruber ◽  
Caroline Junker ◽  
Per Greisen ◽  
Claus Hélix-Nielsen

2009 ◽  
Vol 19 (15) ◽  
pp. 4148-4150 ◽  
Author(s):  
Takahisa Anada ◽  
Yoichi Takeda ◽  
Yoshitomo Honda ◽  
Kazuo Sakurai ◽  
Osamu Suzuki

1983 ◽  
Vol 112 (1) ◽  
pp. 61-65 ◽  
Author(s):  
Jason M. Kittler ◽  
Dace Viceps-Madore ◽  
John A. Cidlowski ◽  
John W. Thanassi

2020 ◽  
Author(s):  
Hong-Xing Fan ◽  
Bao-Di Gou ◽  
Yu-Xi Gao ◽  
Gang Wu ◽  
Shu-Hu Liu ◽  
...  

Protein-bound calcium (prCa) constitutes about 40% of serum total calcium, in which albumin is the most dominant protein. Given the chemical interaction between calcium and phosphate (Pi), the increased serum Pi in chronic kidney disease may cause changes in the composition and structure of the prCa fraction. Here, we report <a>the phosphate binding on the protein-bound calcium in uremic rat serum.</a> Using adenine-fed rats as a uremic model, we determined the levels of calcium and phosphate fractions in rat serum by ultrafiltration, and found that the level of protein-bound phosphate (prPi) in the uremic serum was markedly higher than in control. The elevated prPi level was comparable to the prCa level, consistent with the presence of <a>protein-bound calcium phosphate</a> pr(Ca)<sub>j-m</sub>(CaPi)<sub>m</sub>. We then confirmed its presence by ex vivo X-ray absorption near-edge structure spectroscopy, revealing the discrete state of the calcium phosphate clusters associated with protein. Finally, in a quantitative investigation using Ca- and Pi-boosted serum, we discovered the threshold concentration for the Pi binding on prCa, and determined the binding constant. The threshold, while preventing Pi from binding to prCa in normal condition, allows excess Pi to do so. The protein-bound calcium phosphate could act as a link between the metabolism of serum proteins and the homeostasis of phosphate and calcium, and it deserves further investigation whether the molar ratio of (prPi/prCa)×100% may serve as a serum index of the vascular calcification status in chronic kidney disease.


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