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Title
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Effect of the COX-2 inhibitor celecoxib on behavioural and immune changes in an olfactory bulbectomised rat model of depression
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Author
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Abstract
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| Background: The olfactory bulbectomised (OBX) rat model is a chronic model of depression in which behavioural and neuroimmunoendocrine changes are reversed only after chronic antidepressant treatment. The cyclooxygenase 2 (COX-2) inhibitor celecoxib has been shown to improve the depressive symptoms in patients with major depression. Methods: The association between blood and brain immunological and behavioural changes in chronic treatment with COX-2 inhibitor was explored in the OBX rats and their sham-operated controls. Results: The OBX group showed significantly higher locomotor activity than the other groups in the first 5 min in the open field. In the home cage emergence test, the OBX group showed a significantly shorter latency period compared to the sham group (z = -3.192, p = 0.001) but there was no difference between the other three groups. In the hypothalamus, the OBX group had a significantly higher interleukin 1 beta (IL-1 beta) concentration than the OBX + celecoxib group ( z = -1.89, p = 0.05) as well as a significantly higher IL-10 concentration ( z = -1.995, p = 0.046). In the prefrontal cortex, the OBX group showed significant-ly higher concentrations of tumour necrosis factor alpha (z = -2.205, p = 0.028) and IL-1 beta (z = -3.361, p = 0.001) than the OBX + celecoxib group, but a significantly lower concentration of IL-10 (p = -3.361, p = 0.001) than the OBX + celecoxib group. Conclusions: The results of this study supported the potential therapeutic role of the COX-2 inhibitor celecoxib. It is possible that the behavioural changes following the chronic administration of celecoxib to the OBX rats are associated with an attenuation of the increase in the pro-inflammatory cytokines in the brain. Copyright (c) 2007 S. Karger AG, Basel. |
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Language
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English
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Source (journal)
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Neuroimmunomodulation. - Basel
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Publication
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Basel
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2007
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ISSN
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1021-7401
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Volume/pages
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14
:2
(2007)
, p. 65-71
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ISI
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000249317000001
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Full text (Publisher's DOI)
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