已发表论文

纳米尿酸或纳米钙磷酸盐为中央病灶诱发草酸钙结石的形成:对尿纳米结晶的一项高分辨率透射电子显微镜研究

 

Authors Gao J, Xue JF, Xu M, Gui BS, Wang FX, Ouyang JM

Published Date September 2014 Volume 2014:9(1) Pages 4399—4409

DOI http://dx.doi.org/10.2147/IJN.S66000

Received 11 April 2014, Accepted 4 July 2014, Published 16 September 2014

Purpose: This study aimed to accurately analyze the relationship between calcium oxalate (CaOx) stone formation and the components of urinary nanocrystallites.
Method: High-resolution transmission electron microscopy (HRTEM), selected area electron diffraction, fast Fourier transformation of HRTEM, and energy dispersive X-ray spectroscopy were performed to analyze the components of these nanocrystallites.
Results: The main components of CaOx stones are calcium oxalate monohydrate and a small amount of dehydrate, while those of urinary nanocrystallites are calcium oxalate monohydrate, uric acid, and calcium phosphate. The mechanism of formation of CaOx stones was discussed based on the components of urinary nanocrystallites.
Conclusion: The formation of CaOx stones is closely related both to the properties of urinary nanocrystallites and to the urinary components. The combination of HRTEM, fast Fourier transformation, selected area electron diffraction, and energy dispersive X-ray spectroscopy could be accurately performed to analyze the components of single urinary nanocrystallites. This result provides evidence for nanouric acid and/or nanocalcium phosphate crystallites as the central nidus to induce CaOx stone formation.
Keywords: nanocrystallites, calcium oxalate stones, heterogeneous nucleation, HRTEM, EDS