Cathepsin L is involved in 6-hydroxydopamine induced apoptosis of SH-SY5Y neuroblastoma cells

2011 ◽  
Vol 1387 ◽  
pp. 29-38 ◽  
Author(s):  
Bei Xiang ◽  
Xifeng Fei ◽  
Wenzhuo Zhuang ◽  
Yun Fang ◽  
Zhenghong Qin ◽  
...  
Oncogene ◽  
1999 ◽  
Vol 18 (7) ◽  
pp. 1479-1486 ◽  
Author(s):  
Simone Fulda ◽  
Werner Lutz ◽  
Manfred Schwab ◽  
Klaus-Michael Debatin

2000 ◽  
Vol 35 (6) ◽  
pp. 603-607 ◽  
Author(s):  
Angelika Eggert ◽  
Michael A. Grotzer ◽  
Tycho J. Zuzak ◽  
Barbara R. Wiewrodt ◽  
Naohiko Ikegaki ◽  
...  

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Qi Xu ◽  
Anumantha G. Kanthasamy ◽  
Manju B. Reddy

Iron may play an important role in Parkinson's disease (PD) since it can induce oxidative stress-dependent neurodegeneration. The objective of this study was to determine whether the iron chelator, phytic acid (IP6) can protect against 6-hydroxydopamine- (6-OHDA-) induced apoptosis in immortalized rat mesencephalic dopaminergic cells under normal and iron-excess conditions. Caspase-3 activity was increased about 6-fold after 6-OHDA treatment (compared to control; ) and 30 μmol/L IP6 pretreatment decreased it by 38% (). Similarly, a 63% protection () against 6-OHDA induced DNA fragmentation was observed with IP6 pretreatment. Under iron-excess condition, a 6-fold increase in caspase-3 activity () and a 42% increase in DNA fragmentation () with 6-OHDA treatment were decreased by 41% () and 27% (), respectively, with 30 μmol/L IP6. Together, our data suggest that IP6 protects against 6-OHDA-induced cell apoptosis in both normal and iron-excess conditions, and IP6 may offer neuroprotection in PD.


Nutrients ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1449 ◽  
Author(s):  
Chi-Rei Wu ◽  
Hung-Chi Chang ◽  
Yih-Dih Cheng ◽  
Wan-Cheng Lan ◽  
Shu-Er Yang ◽  
...  

The medicinal ferns of Polydiaceae and Davalliaceae species are called “Gusuibu” by Chinese physicians and used as antiaging dietary medicines. Our previous report revealed that Drynaria fortunei (Polydiaceae) protected against 6-hydroxydopamine (6-OHDA)-induced oxidative damage via the PI3K/AKT pathway in B35 neuroblastoma cells. The present study compares the antioxidant phytoconstituent contents and radical scavenging capacities of five Davalliaceae species. The further aim was to clarify the protective mechanism of Davallia mariesii (DM) against 6-OHDA-induced oxidative damage and apoptosis in B35 cells. The results show that Araiostegia perdurans (AP) and DM extracts have better radical scavenging capacities against 1,1-diphenyl-2-picryhydrazyl (DPPH) and reactive oxygen species (ROS) than other Davalliaceae species. However, only DM extract inhibited 6-OHDA autoxidation under cell-free systems and increased cell viability, compared to B35 cells solely exposed to 6-OHDA. DM extract decreased apoptosis and restored mitochondrial expression in 6-OHDA-treated B35 cells. Additional data indicated that DM extract decreased intracellular ROS and nitric oxide levels generated by 6-OHDA exposure. DM extract also restored glutathione (GSH) levels and the activities of glutathione peroxidase and reductase, and then decreased the elevated malondialdehyde (MDA) levels. Finally, DM extract regulated the protein expression of the caspase cascade and PI3K/AKT/GSK-3β pathways. These results suggest that the protective mechanism of DM extract against 6-OHDA-induced oxidative damage and apoptosis might be related to its radical scavenging capacity, maintaining the mitochondrial function to inhibit the Bcl-2/caspase cascade pathway and activating intracellular antioxidant defenses (GSH recycling, HO-1 and NQO-1) by modulating the activation of the PI3K/AKT/GSK-3β pathway.


2007 ◽  
Vol 32 (Suppl. 1) ◽  
pp. 186
Author(s):  
M. F. Stevens ◽  
S. Braun ◽  
H. Hermanns ◽  
P. Lipfert ◽  
F. Essmann ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document