scholarly journals Aging Promotes Sirtuin 3-Dependent Cartilage Superoxide Dismutase 2 Acetylation and Osteoarthritis

2016 ◽  
Vol 68 (8) ◽  
pp. 1887-1898 ◽  
Author(s):  
Yao Fu ◽  
Michael Kinter ◽  
Joanna Hudson ◽  
Kenneth M. Humphries ◽  
Rachel S. Lane ◽  
...  
Author(s):  
Wenqi Liang ◽  
Chunli Zhao ◽  
Zhongrui Chen ◽  
Zijing Yang ◽  
Ke Liu ◽  
...  

Mitochondrial oxidative stress is involved in hair cell damage caused by noise-induced hearing loss (NIHL). Sirtuin-3 (SIRT3) plays an important role in hair cell survival by regulating mitochondrial function; however, the role of SIRT3 in NIHL is unknown. In this study, we used 3-TYP to inhibit SIRT3 and found that this inhibition aggravated oxidative damage in the hair cells of mice with NIHL. Moreover, 3-TYP reduced the enzymatic activity and deacetylation levels of superoxide dismutase 2 (SOD2). Subsequently, we administered adeno-associated virus-SIRT3 to the posterior semicircular canals and found that SIRT3 overexpression significantly attenuated hair cell injury and that this protective effect of SIRT3 could be blocked by 2-methoxyestradiol, a SOD2 inhibitor. These findings suggest that insufficient SIRT3/SOD2 signaling leads to mitochondrial oxidative damage resulting in hair cell injury in NIHL. Thus, ameliorating noise-induced mitochondrial redox imbalance by intervening in the SIRT3/SOD2 signaling pathway may be a new therapeutic target for hair cell injury.


2010 ◽  
Vol 18 ◽  
pp. S103-S104
Author(s):  
C. Gabrielides ◽  
J.L. Scott ◽  
R.W. Taylor ◽  
D.A. Young

2014 ◽  
Vol 21 (4) ◽  
pp. 565-569 ◽  
Author(s):  
Celine Faure ◽  
Pauline Leveille ◽  
Charlotte Dupont ◽  
Chantal Julia ◽  
Pascale Chavatte-Palmer ◽  
...  

2013 ◽  
Vol 65 ◽  
pp. S20
Author(s):  
Madhubhani LP Hemachandra ◽  
Usawadee Dier ◽  
Larissa M Uusitalo ◽  
Donghui Shin ◽  
Sarah a Engelberth ◽  
...  

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Emilie Dubois-Deruy ◽  
Marie Cuvelliez ◽  
Jan Fiedler ◽  
Henri Charrier ◽  
Paul Mulder ◽  
...  

2014 ◽  
Vol 67 (11) ◽  
pp. 1604
Author(s):  
Aadil A. Khan ◽  
Martin McLaughlin ◽  
Joan Kyula ◽  
Michelle Wilkinson ◽  
Paul A. Harris ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document