Abstract:
:Using an approach that combines gene therapy with aromatic l-amino acid decarboxylase (AADC) gene and a pro-drug (l-dopa), dopamine, the neurotransmitter involved in Parkinson's disease, can be synthesized and regulated. Striatal neurons infected with the AADC gene by an adeno-associated viral vector can convert peripheral l-dopa to dopamine and may therefore provide a buffer for unmetabolized l-dopa. This approach to treating Parkinson's disease may reduce the need for l-dopa/carbidopa, thus providing a better clinical response with fewer side effects. In addition, the imbalance in dopamine production between the nigrostriatal and mesolimbic dopaminergic systems can be corrected by using AADC gene delivery to the striatum. We have also demonstrated that a fundamental obstacle in the gene therapy approach to the central nervous system, i.e., the ability to deliver viral vectors in sufficient quantities to the whole brain, can be overcome by using convection-enhanced delivery. Finally, this study demonstrates that positron emission tomography and the AADC tracer, 6-[(18)F]fluoro-l-m-tyrosine, can be used to monitor gene therapy in vivo. Our therapeutic approach has the potential to restore dopamine production, even late in the disease process, at levels that can be maintained during continued nigrostriatal degeneration.
journal_name
Exp Neuroljournal_title
Experimental neurologyauthors
Bankiewicz KS,Eberling JL,Kohutnicka M,Jagust W,Pivirotto P,Bringas J,Cunningham J,Budinger TF,Harvey-White Jdoi
10.1006/exnr.2000.7408keywords:
subject
Has Abstractpub_date
2000-07-01 00:00:00pages
2-14issue
1eissn
0014-4886issn
1090-2430pii
S0014-4886(00)97408-9journal_volume
164pub_type
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