Title : Inducible nitric oxide synthase and cyclooxgenase-2 mediate protection of hydrogen peroxide preconditioning against apoptosis induced by oxidative stress in PC12 cells.

Pub. Date : 2006 Jul 24

PMID : 16616209






4 Functional Relationships(s)
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1 In this study, using the neurosecretory cell line-PC12 cells to set up the model of neuroprotection of preconditioning with H(2)O(2) against apoptosis, we first investigate what changes in expression of iNOS and COX-2 appear during H(2)O(2) preconditioning, then determine if both iNOS inhibitor and COX-2 inhibitor interfere with the neuroprotection elicited by preconditioning with H(2)O(2). Water nitric oxide synthase 2 Rattus norvegicus
2 In this study, using the neurosecretory cell line-PC12 cells to set up the model of neuroprotection of preconditioning with H(2)O(2) against apoptosis, we first investigate what changes in expression of iNOS and COX-2 appear during H(2)O(2) preconditioning, then determine if both iNOS inhibitor and COX-2 inhibitor interfere with the neuroprotection elicited by preconditioning with H(2)O(2). Water nitric oxide synthase 2 Rattus norvegicus
3 We found that preconditioning with H(2)O(2) at 10 microM significantly protected PC12 cells against apoptosis induced by lethal H(2)O(2) (50 microM) and increased the expression of iNOS and COX-2 and that selective iNOS inhibitor, aminoguanidine (AG) and COX-2 inhibitor, NS-398 obviously blocked the protective effects induced by preconditioning with 10 microM H(2)O(2). Water nitric oxide synthase 2 Rattus norvegicus
4 We found that preconditioning with H(2)O(2) at 10 microM significantly protected PC12 cells against apoptosis induced by lethal H(2)O(2) (50 microM) and increased the expression of iNOS and COX-2 and that selective iNOS inhibitor, aminoguanidine (AG) and COX-2 inhibitor, NS-398 obviously blocked the protective effects induced by preconditioning with 10 microM H(2)O(2). Water nitric oxide synthase 2 Rattus norvegicus