Campo DC | Valor | Idioma |
dc.contributor.author | Viana, Alice F | - |
dc.contributor.author | Maciel, Izaque S | - |
dc.contributor.author | Dornelles, Fabiana N | - |
dc.contributor.author | Figueiredo, Cláudia P | - |
dc.contributor.author | Siqueira, Jarbas M | - |
dc.contributor.author | Campos, Maria Martha | - |
dc.contributor.author | Calixto, João B | - |
dc.date.accessioned | 2012-04-25T16:56:08Z | - |
dc.date.available | 2012-04-25T16:56:08Z | - |
dc.date.issued | 2010 | - |
dc.identifier.issn | 1742-2094 | en_US |
dc.identifier.uri | http://hdl.handle.net/10923/903 | - |
dc.description.abstract | BACKGROUND: Kinin B1 receptors are inducible molecules up-regulated after inflammatory stimuli. This study evaluated the relevance of kinin B1 receptors in a mouse depression behavior model. METHODS: Mice were exposed to a 5-min swimming session, and 30 min later they were injected with E. coli lipopolysaccharide (LPS). Depression-like behavior was assessed by determining immobility time in a tail suspension test. Different brain structures were collected for molecular and immunohistochemical studies. Anhedonia was assessed by means of a sucrose intake test. RESULTS: Our protocol elicited an increase in depression-like behavior in CF1 mice, as assessed by the tail-suspension test, at 24 h. This behavior was significantly reduced by treatment with the selective B1 receptor antagonists R-715 and SSR240612. Administration of SSR240612 also prevented an increase in number of activated microglial cells in mouse hippocampus, but did not affect a reduction in expression of mRNA for brain-derived neurotrophic factor. The increased immobility time following LPS treatment was preceded by an enhancement of hippocampal and cortical B1 receptor mRNA expression (which were maximal at 1 h), and a marked production of TNFa in serum, brain and cerebrospinal fluid (between 1 and 6 h). The depression-like behavior was virtually abolished in TNFa p55 receptor-knockout mice, and increased B1 receptor mRNA expression was completely absent in this mouse strain. Furthermore, treatment with SSR240612 was also effective in preventing anhedonia in LPS-treated mice, as assessed using a sucrose preference test. CONCLUSION: Our data show, for the first time, involvement of kinin B1 receptors in depressive behavioral responses, in a process likely associated with microglial activation and TNFa production. Thus, selective and orally active B1 receptor antagonists might well represent promising pharmacological tools for depression therapy. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | BioMed Central | en_US |
dc.subject | KININS | en_US |
dc.subject | B1 RECEPTOR | en_US |
dc.subject | INFECTION | en_US |
dc.subject | DEPRESSION | en_US |
dc.subject | MICE | en_US |
dc.subject | DEPRESSÃO | en_US |
dc.title | Kinin B1 receptors mediate depression-like behavior response in stressed mice treated with systemic E. coli lipopolysaccharide | en_US |
dc.type | article | en_US |
dc.identifier.doi | 10.1186/1742-2094-7-98 | en_US |
dc.identifier.pmid | 21194425 | en_US |
dc.jtitle | Journal of Neuroinflammation | en_US |
dc.publication.date | 2010 | en_US |
dc.volume | 7 | en_US |
dc.spage | 1 | en_US |
dc.epage | 12 | en_US |
Aparece en las colecciones: | Artigo de Periódico
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