alexa Transgenic mice expressing a dominant negative mutant interleukin-1beta converting enzyme show resistance to MPTP neurotoxicity.


Journal of Clinical & Experimental Pathology

Author(s): Klevenyi P, Andreassen O, Ferrante RJ, Schleicher JR Jr, Friedlander RM,

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Abstract Increasing evidence implicates apoptosis as a major mechanism of cell death in neurodegenerative diseases. Recent evidence has demonstrated that chronic administration of MPTP can lead to apoptotic cell death. In the present study we examined whether transgenic mice expressing a dominant negative inhibitor of interleukin-1beta convertase enzyme (ICE) are resistant to MPTP induced neurotoxicity. MPTP resulted in a significant depletion of dopamine, DOPAC and HVA in littermate control mice which were completely inhibited in the mutant interleukin-1beta converting enzyme mice. There was also significant protection against MPTP-induced depletion of tyrosine hydroxylase-immunoreactive neurons. There was no alteration in MPTP uptake or metabolism. These results provide further evidence that apoptotic cell death as well as ICE may play an important role in the neurotoxicity of MPTP.
This article was published in Neuroreport and referenced in Journal of Clinical & Experimental Pathology

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