Abstract:
:Tumor necrosis factor-alpha (TNF-alpha) is emerging as an important modulator of the function of the central nervous system. In the present study, we investigated a role of endogenous TNF-alpha in cognitive and emotional function using mice with targeted deletions of the TNF-alpha gene. TNF-alpha-(-/-) mice showed normal diurnal rhythms of spontaneous locomotor activity and cognitive functions. Emotional behavior in the mutant mice, however, was significantly altered, which manifested in the performance in the open-field, elevated plus maze, and forced swimming tests. The altered performance in the elevated plus maze test was significantly alleviated by treatment with diazepam. Postmortem brain analysis of TNF-alpha-(-/-) mice revealed a significant increase in serotonin metabolism in the brain. These findings suggest a role for endogenous TNF-alpha in emotional behavior, which may possibly be related to alterations of serotonine metabolism.
journal_name
J Neuroimmunoljournal_title
Journal of neuroimmunologyauthors
Yamada K,Iida R,Miyamoto Y,Saito K,Sekikawa K,Seishima M,Nabeshima Tdoi
10.1016/s0165-5728(00)00375-1subject
Has Abstractpub_date
2000-11-01 00:00:00pages
131-8issue
1-2eissn
0165-5728issn
1872-8421pii
S0165572800003751journal_volume
111pub_type
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