Abstract：
:We have earlier shown that the glucagon-like peptide 1 receptor agonist exendin-4 stimulates neurogenesis in the subventricular zone and excerts anti-parkinsonian behavior. The aim of this study was to assess the effects of exendin-4 treatment on hippocampus-associated cognitive and mood-related behavior in adult rodents. To investigate potential effects of exendin-4 on hippocampal function, radial maze and forced swim test were employed. The time necessary to solve a radial maze task and the duration of immobility in the forced swim test were significantly reduced compared to respective vehicle groups if the animals had received exendin-4 during 1-2weeks before testing. In contrast to the positive control imipramine, single administration of exendin-4 1h before the challenge in the forced swim test had no effect. Immunohistochemical analysis showed that the incorporation of bromodeoxyuridine, a marker for DNA synthesis, as well as doublecortin expression was increased in the hippocampal dentate gyrus following chronic treatment with exendin-4 compared to vehicle-treated controls. The neurogenic effect of exendin-4 on hippocampus was confirmed by quantitative PCR showing an upregulation of mRNA expression for Ki-67, doublecortin and Mash-1. Since exendin-4 significantly improves hippocampus-associated behavior in adult rodents, it may be a candidate for alleviation of mood and cognitive disorders.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Isacson R,Nielsen E,Dannaeus K,Bertilsson G,Patrone C,Zachrisson O,Wikström Ldoi
10.1016/j.ejphar.2010.10.008subject
Has Abstractpub_date
2011-01-10 00:00:00pages
249-55issue
1eissn
0014-2999issn
1879-0712pii
S0014-2999(10)01011-3journal_volume
650pub_type
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journal_title：European journal of pharmacology
pub_type： 杂志文章,评审
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abstract：:Closed head injury induces cerebral oxidative stress. The efficacy of a Mn (III) porphyrin catalytic antioxidant was assessed in a mouse closed head injury model. Mice were subjected to closed head injury and treated 15 min later with an i.v. bolus of vehicle or 3 mg/kg MnTE-2-PyP5+. Aconitase activity, Fluoro-Jade st...
journal_title：European journal of pharmacology
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