Title : Genetic inactivation of pleiotrophin triggers amphetamine-induced cell loss in the substantia nigra and enhances amphetamine neurotoxicity in the striatum.

Pub. Date : 2010 Sep 29

PMID : 20620199






7 Functional Relationships(s)
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1 Genetic inactivation of pleiotrophin triggers amphetamine-induced cell loss in the substantia nigra and enhances amphetamine neurotoxicity in the striatum. Amphetamine pleiotrophin Mus musculus
2 Genetic inactivation of pleiotrophin triggers amphetamine-induced cell loss in the substantia nigra and enhances amphetamine neurotoxicity in the striatum. Amphetamine pleiotrophin Mus musculus
3 To test this hypothesis, we have studied the effects of amphetamine (10 mg/kg, four times, every 2 h) on the nigrostriatal pathway of PTN genetically deficient (PTN-/-) mice. Amphetamine pleiotrophin Mus musculus
4 We found that amphetamine causes a significantly enhanced loss of dopaminergic terminals in the striatum of PTN-/- mice compared to wild type (WT+/+) mice. Amphetamine pleiotrophin Mus musculus
5 In addition, we found a significant decrease ( approximately 20%) of tyrosine hydroxylase (TH)-positive neurons only in the substantia nigra of amphetamine-treated PTN-/- mice, whereas this area of WT+/+ animals remained unaffected after amphetamine treatment. Amphetamine pleiotrophin Mus musculus
6 This effect was accompanied by enhanced amphetamine-induced astrocytosis in the substantia nigra of PTN-/- mice. Amphetamine pleiotrophin Mus musculus
7 The data suggest an important role of PTN in the protection of nigrostriatal pathways against amphetamine insult. Amphetamine pleiotrophin Mus musculus