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Type A monoamine oxidase is associated with induction of neuroprotective Bcl-2 by rasagiline, an inhibitor of type B monoamine oxidase.
MedLine Citation:
PMID:  22065207     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Rasagiline and (-)deprenyl (selegiline), irreversible type B monoamine oxidase (MAO-B) inhibitors, protect neuronal cells through gene induction of pro-survival Bcl-2 and neurotrophic factors in the cellular models of neurodegenerative disorders. In this paper, the role of MAO in the up-regulation of neuroprotective Bcl-2 gene by these inhibitors was studied using type A MAO (MAO-A) expressing wild SH-SY5Y cells and the transfection-enforced MAO-B overexpressed cells. Rasagiline and (-)deprenyl, and also befloxatone, a reversible MAO-A inhibitor, increased Bcl-2 mRNA and protein in SH-SY5Y cells. Silencing MAO-A expression with short interfering (si) RNA suppressed Bcl-2 induction by rasagiline, but not by (-)deprenyl. MAO-B overexpression inhibited Bcl-2 induction by rasagiline and befloxatone, but did not affect that by (-)deprenyl, suggesting the different mechanisms behind Bcl-2 gene induction by these MAO-B inhibitors. The novel role of MAO-A in Bcl-2 induction by rasagiline is discussed with regard to the molecular mechanism underlying neuroprotection by the MAO inhibitors.
Authors:
Keiko Inaba-Hasegawa; Yukihiro Akao; Wakako Maruyama; Makoto Naoi
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-11-8
Journal Detail:
Title:  Journal of neural transmission (Vienna, Austria : 1996)     Volume:  -     ISSN:  1435-1463     ISO Abbreviation:  -     Publication Date:  2011 Nov 
Date Detail:
Created Date:  2011-11-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9702341     Medline TA:  J Neural Transm     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Department of Neurosciences, Gifu International Institute of Biotechnology, 1-1 Nakafudogaoka, Kakamigahara, Gifu, 504-0838, Japan.
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