Title : [Effect of phosphorylated c-Jun expression on COX-2 expression in the substantia nigra of MPTP mouse model of subacute Parkinson disease].

Pub. Date : 2007 Aug

PMID : 17715026






7 Functional Relationships(s)
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1 [Effect of phosphorylated c-Jun expression on COX-2 expression in the substantia nigra of MPTP mouse model of subacute Parkinson disease]. 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine jun proto-oncogene Mus musculus
2 OBJECTIVE: To investigate the effect of phophorylated c-Jun (p-c-Jun) expression on the expression of COX-2 in the substantia nigra (SN) of the MPTP mouse model of subacute Parkinson disease (PD) and explore the possible mechanism of the dopaminergic (DA) neuron death in PD. 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine jun proto-oncogene Mus musculus
3 OBJECTIVE: To investigate the effect of phophorylated c-Jun (p-c-Jun) expression on the expression of COX-2 in the substantia nigra (SN) of the MPTP mouse model of subacute Parkinson disease (PD) and explore the possible mechanism of the dopaminergic (DA) neuron death in PD. 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine jun proto-oncogene Mus musculus
4 P-c-Jun was specifically expressed in the nuclei of neurons and p-c-Jun expression level was significantly increased in the SN 6 h after the third injection of MPTP. 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine jun proto-oncogene Mus musculus
5 P-c-Jun was specifically expressed in the nuclei of neurons and p-c-Jun expression level was significantly increased in the SN 6 h after the third injection of MPTP. 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine jun proto-oncogene Mus musculus
6 In mice treated with JNK inhibitor, the number of TH-positive neurons and TH expression level in the SN was only decreased by 15% and 20% as compared with the control group (P<0.001) 7 days after the fifth injection of MPTP, COX-2-positive cell number and COX-2 expression level were obviously reduced as compared with the model group (P<0.001), and p-c-Jun was expressed mainly in the cytoplasm of the neurons whose expression level in SN were significantly decreased 6 h after the third injection of MPTP. 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine jun proto-oncogene Mus musculus
7 CONCLUSION: P-c-Jun expression may play an important role in mediating COX-2 expression in the SN in the MPTP model of subacute PD, and inhibiting p-c-Jun activity may provide neuroprotection to the mouse model. 1-Methyl-4-phenyl-1,2,3,6-tetrahydropyridine jun proto-oncogene Mus musculus