Title : Involvement of nitric oxide synthase and ROS-mediated activation of L-type voltage-gated Ca2+ channels in NMDA-induced DPYSL3 degradation.

Pub. Date : 2006 Nov 13

PMID : 16987501






19 Functional Relationships(s)
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1 Involvement of nitric oxide synthase and ROS-mediated activation of L-type voltage-gated Ca2+ channels in NMDA-induced DPYSL3 degradation. ros dihydropyrimidinase like 3 Homo sapiens
2 Involvement of nitric oxide synthase and ROS-mediated activation of L-type voltage-gated Ca2+ channels in NMDA-induced DPYSL3 degradation. N-Methylaspartate dihydropyrimidinase like 3 Homo sapiens
3 Recently, we have shown that in primary cortical neurons (PCN) NMDA and oxidative stress (H(2)O(2)) caused a calpain-dependent cleavage of DPYSL3 (62 kDa) resulting in the appearance of a lower molecular weight form (60 kDa) of DPYSL3. N-Methylaspartate dihydropyrimidinase like 3 Homo sapiens
4 Recently, we have shown that in primary cortical neurons (PCN) NMDA and oxidative stress (H(2)O(2)) caused a calpain-dependent cleavage of DPYSL3 (62 kDa) resulting in the appearance of a lower molecular weight form (60 kDa) of DPYSL3. N-Methylaspartate dihydropyrimidinase like 3 Homo sapiens
5 Our preliminary results had shown that antioxidants significantly reduced NMDA-induced DPYSL3 degradation, indicating involvement of ROS in calpain activation. N-Methylaspartate dihydropyrimidinase like 3 Homo sapiens
6 Our preliminary results had shown that antioxidants significantly reduced NMDA-induced DPYSL3 degradation, indicating involvement of ROS in calpain activation. ros dihydropyrimidinase like 3 Homo sapiens
7 The aim of this study was to investigate the possible involvement of NOS in NMDA-induced DPYSL3 degradation. N-Methylaspartate dihydropyrimidinase like 3 Homo sapiens
8 We found that NOS inhibitor (L-NAME) significantly prevented NMDA-induced ROS formation, as well as intracellular Ca(2+) increase [Ca(2+)](i), DPYSL3 degradation and cell death. NG-Nitroarginine Methyl Ester dihydropyrimidinase like 3 Homo sapiens
9 Further, exposure of PCN to NO donor (SNP) resulted in significant [Ca(2+)](i) increase, ROS generation and probable calpain-mediated DPYSL3 truncation. PREGNENOLONE CARBONITRILE dihydropyrimidinase like 3 Homo sapiens
10 The NMDA- and oxidative stress (ROS)-induced DPYSL3 truncation was totally dependent on extracellular [Ca(2+)](i). N-Methylaspartate dihydropyrimidinase like 3 Homo sapiens
11 The NMDA- and oxidative stress (ROS)-induced DPYSL3 truncation was totally dependent on extracellular [Ca(2+)](i). ros dihydropyrimidinase like 3 Homo sapiens
12 While NMDA-induced DPYSL3 truncation was blocked by both NMDA receptor antagonist (MK801) [Kowara, R., Chen, Q., Milliken, M., Chakravarthy, B., 2005. N-Methylaspartate dihydropyrimidinase like 3 Homo sapiens
13 While NMDA-induced DPYSL3 truncation was blocked by both NMDA receptor antagonist (MK801) [Kowara, R., Chen, Q., Milliken, M., Chakravarthy, B., 2005. Dizocilpine Maleate dihydropyrimidinase like 3 Homo sapiens
14 Calpain-mediated degradation of dihydropyrimidinase-like 3 protein (DPYSL3) in response to NMDA and H(2)O(2) toxicity. N-Methylaspartate dihydropyrimidinase like 3 Homo sapiens
15 Calpain-mediated degradation of dihydropyrimidinase-like 3 protein (DPYSL3) in response to NMDA and H(2)O(2) toxicity. N-Methylaspartate dihydropyrimidinase like 3 Homo sapiens
16 95 (2), 466-474] and L-VGCC (nimodipine) inhibitors, H(2)O(2)-induced increase in [Ca(2+)](i), ROS generation and DPYSL3 truncation was blocked only by nimodipine. Hydrogen Peroxide dihydropyrimidinase like 3 Homo sapiens
17 These results indicate that changes in Ca(2+) homeostasis resulting from ROS-dependent activation of L-VGCC are sufficient to induce probable calpain-mediated DPYSL3 truncation and demonstrate for the first time the role of ROS in the mechanism leading to glutamate-induced calpain activation and DPYSL3 protein degradation. ros dihydropyrimidinase like 3 Homo sapiens
18 These results indicate that changes in Ca(2+) homeostasis resulting from ROS-dependent activation of L-VGCC are sufficient to induce probable calpain-mediated DPYSL3 truncation and demonstrate for the first time the role of ROS in the mechanism leading to glutamate-induced calpain activation and DPYSL3 protein degradation. ros dihydropyrimidinase like 3 Homo sapiens
19 These results indicate that changes in Ca(2+) homeostasis resulting from ROS-dependent activation of L-VGCC are sufficient to induce probable calpain-mediated DPYSL3 truncation and demonstrate for the first time the role of ROS in the mechanism leading to glutamate-induced calpain activation and DPYSL3 protein degradation. Glutamic Acid dihydropyrimidinase like 3 Homo sapiens