scholarly journals Growth Factors and Oxidative Stress Act Oppositely on Chaperone‐Mediated Autophagy (CMA) in Renal Tubular Cells: Differences in FoxO1 abundance

2008 ◽  
Vol 22 (S1) ◽  
Author(s):  
Harold A. Franch ◽  
Nikia S. Brown ◽  
Wen Shen
2014 ◽  
Vol 128 (4) ◽  
pp. 269-280 ◽  
Author(s):  
Rui Xi Li ◽  
Wai Han Yiu ◽  
Hao Jia Wu ◽  
Dickson W. L. Wong ◽  
Loretta Y. Y. Chan ◽  
...  

BMP7 ameliorates diabetic tubulopathy by suppressing inflammatory and oxidative stress responses both in cultured renal tubular cells exposed to advanced glycation end-products and in diabetic db/db mice.


2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Baolong Qin ◽  
Qing Wang ◽  
Yuchao Lu ◽  
Cong Li ◽  
Henglong Hu ◽  
...  

Calcium oxalate (CaOx) is the most common type of urinary stone. Increase of ROS and NADPH oxidase gives rise to inflammation and injury of renal tubular cells, which promotes CaOx stone formation. Recent studies have revealed that the renin-angiotensin system might play a role in kidney crystallization and ROS production. Here, we investigated the involvement of Ang II/AT1R and losartan in CaOx stone formation. NRK-52E cells were incubated with CaOx crystals, and glyoxylic acid-induced hyperoxaluric rats were treated with losartan. Oxidative stress statuses were evaluated by detection of ROS, oxidative products (8-OHdG and MDA), and antioxidant enzymes (SOD and CAT). Expression of NADPH oxidase subunits (Nox2 and Nox4), NF-κB pathway subunits (p50 and p65), and stone-related proteins such as OPN, CD44, and MCP-1 was determined by Western blotting. The results revealed upregulation of Ang II/AT1R by CaOx treatment. CaOx-induced ROS and stone-related protein upregulation were mediated by the Ang II/AT1R signaling pathway. Losartan ameliorated renal tubular cell expression of stone-related proteins and renal crystallization by inhibiting NADPH oxidase and oxidative stress. We conclude that losartan might be a promising preventive and therapeutic candidate for hyperoxaluria nephrolithiasis.


2015 ◽  
Vol 12 (4) ◽  
pp. 6086-6092 ◽  
Author(s):  
TSAI-KUN WU ◽  
CHYOU-WEI WEI ◽  
YING-RU PAN ◽  
SHUR-HUEIH CHERNG ◽  
WEI-JUNG CHANG ◽  
...  

2008 ◽  
Vol 179 (4) ◽  
pp. 1620-1626 ◽  
Author(s):  
Hyoung Keun Park ◽  
Byong Chang Jeong ◽  
Mi-Kyung Sung ◽  
Mi-Young Park ◽  
Eun Young Choi ◽  
...  

2005 ◽  
Vol 33 (4) ◽  
pp. 261-266 ◽  
Author(s):  
Yasunori Itoh ◽  
Takahiro Yasui ◽  
Atsushi Okada ◽  
Keiichi Tozawa ◽  
Yutaro Hayashi ◽  
...  

2016 ◽  
Vol 13 (5) ◽  
pp. 4343-4348 ◽  
Author(s):  
Zhuohang Li ◽  
Yiyu Sheng ◽  
Cheng Liu ◽  
Kuiqing Li ◽  
Xin Huang ◽  
...  

Renal Failure ◽  
2003 ◽  
Vol 25 (3) ◽  
pp. 341-353 ◽  
Author(s):  
Marcelino de Souza Durão ◽  
Clara Versolato Razvickas ◽  
Elsa Alídia Petry Gonçalves ◽  
Iria Ruriko Okano R.N. ◽  
Simone Mafalda Rodrigues Camargo ◽  
...  

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Xuezhong Gong ◽  
Yiru Duan ◽  
Junli Zheng ◽  
Yiquan Wang ◽  
Guohua Wang ◽  
...  

Contrast-induced nephropathy (CIN) is a leading cause of hospital-acquired acute kidney injury (AKI) due to apoptosis induced in renal tubular cells. Our previous study demonstrated the novel N-acetylcysteine amide (NACA); the amide form of N-acetyl cysteine (NAC) prevented renal tubular cells from contrast-induced apoptosis through inhibiting p38 MAPK pathway in vitro. In the present study, we aimed to compare the efficacies of NACA and NAC in preventing CIN in a well-established rat model and investigate whether thioredoxin-1 (Trx1) and apoptosis signal-regulating kinase 1 (ASK1) act as the potential activator for p38 MAPK. NACA significantly attenuated elevations of serum creatinine, blood urea nitrogen, and biomarkers of AKI. At equimolar concentration, NACA was more effective than NAC in reducing histological changes of renal tubular injuries. NACA attenuated activation of p38 MAPK signal, reduced oxidative stress, and diminished apoptosis. Furthermore, we demonstrated that contrast exposure resulted in Trx1 downregulation and increased ASK1/p38 MAPK phosphorylation, which could be reversed by NACA and NAC. To our knowledge, this is the first report that Trx1 and ASK1 are involved in CIN. Our study highlights a renal protective role of NACA against CIN through modulating Trx1 and ASK1/p38 MAPK pathway to result in the inhibition of apoptosis among renal cells.


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