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The effect of unpredictable chronic mild stress on depressive-like behavior and on hippocampal A1 and striatal A2A adenosine receptors.
Crema, Leonardo M; Pettenuzzo, Letícia F; Schlabitz, Michele; Diehl, Luisa; Hoppe, Juliana; Mestriner, Régis; Laureano, Daniela; Salbego, Christianne; Dalmaz, Carla; Vendite, Deusa.
Afiliação
  • Crema LM; Departamento de Bioquímica, ICBS, Universidade Federal do Rio Grande do Sul, Brazil.
Physiol Behav ; 109: 1-7, 2013 Jan 17.
Article em En | MEDLINE | ID: mdl-23159724
This study examined the effects of two chronic stress regimens upon depressive-like behavior, A(1) and A(2A) adenosine receptor binding and immunocontent. Male rats were subjected to unpredictable chronic mild stress (UCMS) or to chronic restraint stress (CRS) for 40 days. Subsequently, depressive-like behaviors (forced swimming and consumption of sucrose) were evaluated, and A(1) adenosine or A(2A) adenosine receptors were examined in the hippocampus or striatum, respectively. UCMS animals demonstrated depressive-related behaviors (decrease in sucrose consumption and increased immobility in the forced swimming test). This group also presented increased A(1) adenosine receptor binding and immunoreactivity in hippocampus, as well as increased striatal A(2A) adenosine receptor binding in the striatum, without alteration in immunoreactivity. Conversely, the chronic restraint stress group displayed only an increase in A(1) adenosine receptor binding and no alteration in the other parameters evaluated. We suggest that the alteration in adenosine receptors, particularly the upregulation of striatal A(2A) adenosine receptors following UCMS, could be associated with depressive-related behavior.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Estresse Psicológico / Receptor A1 de Adenosina / Receptor A2A de Adenosina / Depressão / Hipocampo Tipo de estudo: Prognostic_studies Limite: Animals Idioma: En Revista: Physiol Behav Ano de publicação: 2013 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Estresse Psicológico / Receptor A1 de Adenosina / Receptor A2A de Adenosina / Depressão / Hipocampo Tipo de estudo: Prognostic_studies Limite: Animals Idioma: En Revista: Physiol Behav Ano de publicação: 2013 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos