Participation of the lateral septal nuclei (LSN) in the antidepressant-like actions of progesterone in the forced swimming test (FST)
| Autor: | Iván Luna-Baltazar, Carolina López-Rubalcava, Margarita Saavedra, Carlos M. Contreras, Erika Estrada-Camarena |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Imipramine
medicine.medical_specialty Ovariectomy Antidepressive Agents Tricyclic Motor Activity GABA Antagonists Behavioral Neuroscience chemistry.chemical_compound Internal medicine medicine Animals Picrotoxin Rats Wistar Receptor Progesterone Swimming Antagonist Septal nuclei GABA receptor antagonist Receptors GABA-A Antidepressive Agents Rats Endocrinology medicine.anatomical_structure chemistry Antidepressant Female Septal Nuclei Behavioural despair test medicine.drug |
| Zdroj: | Behavioural Brain Research. 134:175-183 |
| ISSN: | 0166-4328 |
| DOI: | 10.1016/s0166-4328(02)00023-2 |
| Popis: | The possible participation of lateral septal nuclei (LSN) in the antidepressant-like actions of progesterone was evaluated. The effect of different concentrations of progesterone (0.001, 0.01 and 0.1 M) or saline solution injected directly into the LSN of ovariectomised rats was determined using the forced swimming test (FST). In addition, the temporal course of progesterone (0.1 M) antidepressant-like actions was compared with that of the classical antidepressant imipramine (0.1 M). Finally, in order to establish the possible participation of the GABA(A) receptor in the antidepressant-like action of progesterone, the effect of pre-treatment with the GABA(A) antagonist picrotoxin (0.125 mg/kg, i.p.) was evaluated. Intraseptally administered progesterone produced a concentration-dependent decrease in immobility behaviour but did not modify locomotor activity. These antidepressant-like actions lasted 4 h, while those of imipramine lasted 72 h. Finally, progesterone-induced anti-immobility effect could be blocked by the systemic injection of picrotoxin. Present results reveal that LSN play a role in the antidepressant-like actions of progesterone that appear to be mediated by the GABA(A) receptor. |
| Databáze: | OpenAIRE |
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