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Concave Urinary Crystallines : Direct Evidence of Calcium Oxalate Crystals Dissolution by Citrate In Vivo
Joint Authors
Ouyang, Jian-Ming
Xu, Meng
Zhang, Guang-Na
Shang, Yun-Feng
Source
Bioinorganic Chemistry and Applications
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-11-18
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
The changes in urinary crystal properties in patients with calcium oxalate (CaOx) calculi after oral administration of potassium citrate (K3cit) were investigated via atomic force microscopy (AFM), scanning electron microscopy (SEM), X-ray powder diffractometry (XRD), and zeta potential analyzer.
The AFM and SEM results showed that the surface of urinary crystals became concave, the edges and corners of crystals became blunt, the average size of urinary crystallines decreased significantly, and aggregation of urinary crystals was reduced.
These changes were attributed to the significant increase in concentration of excreted citrate to 492±118 mg/L after K3cit intake from 289±83 mg/L before K3cit intake.
After the amount of urinary citrate was increased, it complexed with Ca2+ ions on urinary crystals, which dissolved these crystals.
Thus, the appearance of concave urinary crystals was a direct evidence of CaOx dissolution by citrate in vivo.
The XRD results showed that the quantities and species of urinary crystals decreased after K3cit intake.
The mechanism of inhibition of formation of CaOx stones by K3cit was possibly due to the complexation of Ca2+ with citrate, increase in urine pH, concentration of urinary inhibitor glycosaminoglycans (GAGs), and the absolute value of zeta potential after K3cit intake.
American Psychological Association (APA)
Shang, Yun-Feng& Xu, Meng& Zhang, Guang-Na& Ouyang, Jian-Ming. 2013. Concave Urinary Crystallines : Direct Evidence of Calcium Oxalate Crystals Dissolution by Citrate In Vivo. Bioinorganic Chemistry and Applications،Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-487153
Modern Language Association (MLA)
Shang, Yun-Feng…[et al.]. Concave Urinary Crystallines : Direct Evidence of Calcium Oxalate Crystals Dissolution by Citrate In Vivo. Bioinorganic Chemistry and Applications No. 2013 (2013), pp.1-8.
https://search.emarefa.net/detail/BIM-487153
American Medical Association (AMA)
Shang, Yun-Feng& Xu, Meng& Zhang, Guang-Na& Ouyang, Jian-Ming. Concave Urinary Crystallines : Direct Evidence of Calcium Oxalate Crystals Dissolution by Citrate In Vivo. Bioinorganic Chemistry and Applications. 2013. Vol. 2013, no. 2013, pp.1-8.
https://search.emarefa.net/detail/BIM-487153
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-487153