Sulfated Undaria pinnatifida polysaccharide inhibits the formation of kidney stones by inhibiting HK-2 cell damage and reducing the adhesion of nano‑calcium oxalate crystals

Author(s):  
Xue-Wu Chen ◽  
Xin-Yuan Sun ◽  
Gu-Hua Tang ◽  
Jian-Ming Ouyang
2011 ◽  
Vol 10 (2) ◽  
pp. 228-229
Author(s):  
A. Okada ◽  
S. Hamamoto ◽  
J. Ichikawa ◽  
K. Nakaoka ◽  
K. Taguchi ◽  
...  

Molecules ◽  
2019 ◽  
Vol 24 (10) ◽  
pp. 1957 ◽  
Author(s):  
Yihang Li ◽  
Guoxu Ma ◽  
Yana Lv ◽  
Jing Su ◽  
Guang Li ◽  
...  

Obcordata A (OA) is a polyoxypregnane glycoside derived from the Dai medicine Aspidopterys obcordata vines. This study aims to investigate the efficacy of OA on renal tubular epithelial cells exposed to calcium oxalate crystals. We incubated renal tubular cells with 28 μg·cm2 calcium oxalate crystals for 24 h with and without OA, GKT137831, phorbol-12-myristate-13-acetate (PMA), and tocopherol. The MTT [3-(4, 5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] assay, microscopic examination, flow cytometry, and immunofluorescence staining revealed that calcium oxalate crystals decreased cell viability and elevated reactive oxygen species (ROS) levels. OA, GKT137831, and tocopherol protected cells and decreased ROS levels. However, OA did not exhibit direct DPPH scavenging ability. In addition, immunoblotting illustrated that OA inhibited the NOX4 (nicotinamide adenine dinucleotide phosphate oxidases 4) expression and downregulated the protein expression in the NOX4/ROS/p38 MAPK (p38 mitogen-activated protein kinase) pathway. The findings suggest that the cytoprotective and antioxidant effects of OA can be blocked by the NOX4 agonist PMA. In conclusion, OA could be used as a NOX4 inhibitor to prevent kidney stones.


2008 ◽  
Vol 179 (4S) ◽  
pp. 564-564
Author(s):  
Atsushi Okada ◽  
Shuzo Hamamoto ◽  
Masahito Hirose ◽  
Yasunori Itoh ◽  
Takahiro Yasui ◽  
...  

2021 ◽  
Vol 11 (7) ◽  
pp. 303-308
Author(s):  
Pallavi Bhosle ◽  
Kaushal Gorle ◽  
Arundhati Deokar

Nephrolithiasis is a process of forming renal calculi or stones in the kidneys. Certain biochemical changes such as formation of reactive oxygen species are the potential causes for epithelial tissue damage resulting in the idiopathic formation and accumulation of calcium oxalate crystals. There are many evidences available for the protective involvement of antioxidants against oxidative stress in nephrolithiasis. Also many formulations of traditional plants having stone breaking, stone dissolving, and diuretic activities, are available in market as ayurvedic treatments for nephrolithiasis. Most of the ayurvedic formulations available in the treatment of nephrolithiasis are generally churna, syrups, tablets or capsules. Many patients show incompliance for regularly ingesting these formulations. Chyawanprash is one of the oldest and most popular Ayurvedic preparations; it is widely sold and consumed as a dietary supplement as well as health promotive and disease preventive formulation. Considering these factors the Chyawanprash formulation was made using all these traditional plants having well reported antinephrolithiatic, nephroprotective and diuretic activities to treat nephrolithiasis in effective and compliable manner. Chyawanprash is prepared as per the instructions documented in Ayurvedic texts Charaka Samhita, the ancient Ayurvedic treatise. Its evaluation is done to calculate its organoleptic properties, pH, shelf life, stability and microbial contamination, Phase separation. Hence we can conclude that Chyawanprash will no longer be just an Immunity builder but it can be used as an effective and compliable medicine for nephrolithiasis treatment. Key words: Chyawanprash, Traditional medicine, Nutraceutical formulations, Nephrolithiasis, Kidney stones, Calcium oxalate crystals.


2012 ◽  
Vol 26 (S1) ◽  
Author(s):  
Daniel P Bondeson ◽  
Taku Hirata ◽  
Pablo Cabrero ◽  
Erik L Ritman ◽  
Julian AT Dow ◽  
...  

Author(s):  
H. J. Arnott ◽  
M. A. Webb ◽  
L. E. Lopez

Many papers have been published on the structure of calcium oxalate crystals in plants, however, few deal with the early development of crystals. Large numbers of idioblastic calcium oxalate crystal cells are found in the leaves of Vitis mustangensis, V. labrusca and V. vulpina. A crystal idioblast, or raphide cell, will produce 150-300 needle-like calcium oxalate crystals within a central vacuole. Each raphide crystal is autonomous, having been produced in a separate membrane-defined crystal chamber; the idioblast''s crystal complement is collectively embedded in a water soluble glycoprotein matrix which fills the vacuole. The crystals are twins, each having a pointed and a bidentate end (Fig 1); when mature they are about 0.5-1.2 μn in diameter and 30-70 μm in length. Crystal bundles, i.e., crystals and their matrix, can be isolated from leaves using 100% ETOH. If the bundles are treated with H2O the matrix surrounding the crystals rapidly disperses.


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