Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-21168
Willi, R; Aloy, E M; Yee, B K; Feldon, J; Schwab, M E (2009). Behavioral characterization of mice lacking the neurite outgrowth inhibitor Nogo-A. Genes, Brain and Behavior, 8(2):181-192.
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The membrane protein Nogo-A inhibits neurite outgrowth and regeneration in the injured central nervous system, primarily because of its expression in oligodendrocytes. Hence, deletion of Nogo-A enhances regeneration following spinal cord injury. Yet, the effects of Nogo-A deletion on general behavior and cognition have not been explored. The possibility of potential novel functions of Nogo-A beyond growth inhibition is strongly suggested by the presence of subpopulations of neurons also expressing Nogo-A - not only during development but also in adulthood. We evaluated here Nogo-A(-/-) mice in a series of general basic behavioral assays as well as functional analyses related to brain regions with notable expression levels of Nogo-A. The SHIRPA protocol did not show any major basic behavioral changes in Nogo-A(-/-) mice. Anxiety-related behavior, pain sensitivity, startle reactivity, spatial learning, and associative learning also appeared indistinguishable between Nogo-A(-/-) and control Nogo-A(+/+) mice. However, motor co-ordination and balance were enhanced in Nogo-A(-/-) mice. Spontaneous locomotor activity was also elevated in Nogo-A(-/-) mice, but this was specifically observed in the dark (active) phase of the circadian cycle. Enhanced locomotor reaction to systemic amphetamine in Nogo-A(-/-) mice further pointed to an altered dopaminergic tone in these mice. The present study is the first behavioral characterization of mice lacking Nogo-A and provides significant insights into the potential behavioral relevance of Nogo-A in the modulation of dopaminergic and motor functions.
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|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||04 Faculty of Medicine > Brain Research Institute|
|DDC:||570 Life sciences; biology
610 Medicine & health
|Deposited On:||12 Oct 2009 11:49|
|Last Modified:||28 Nov 2013 01:11|
|Additional Information:||The definitive version is available at www.blackwell-synergy.com|
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