Abstract:
:Nitric oxide (NO) is implicated in inflammation and hypothalamic-pituitary responses to immune stimuli; however, the specific role of NO from neurons during stress-induced immune responses remains unspecified. We measured antigen-specific delayed-type-hypersensitivity (DTH) responses in the skin of wild-type (WT) and neuronal nitric oxide synthase knockout (nNOS(-/-)) mice at baseline and after 2 h of restraint. Baseline corticosterone concentrations were higher in nNOS(-/-) than WT mice. However, stress-induced increases in corticosterone were dampened in nNOS(-/-) mice, and restraint suppressed DTH only in WT animals. Furthermore, WT mice lost more body mass after stress, and exhibited more anxiety-like behavior in the open field, than nNOS(-/-) mice. Neuronal NO appears to be involved in the neuroendocrine-immune response to stress, perhaps via glucocorticoid regulation.
journal_name
J Neuroimmunoljournal_title
Journal of neuroimmunologyauthors
Bilbo SD,Hotchkiss AK,Chiavegatto S,Nelson RJdoi
10.1016/s0165-5728(03)00175-9subject
Has Abstractpub_date
2003-07-01 00:00:00pages
41-8issue
1-2eissn
0165-5728issn
1872-8421pii
S0165572803001759journal_volume
140pub_type
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