Selective Effect of Allopregnanolone on Corticoliberin-Induced Anxiety
| Autor: | O. G. Semenova, V. V. Rakitskaya |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Male
medicine.medical_specialty Elevated plus maze Corticotropin-Releasing Hormone medicine.medical_treatment Pregnanolone Anxiety General Biochemistry Genetics and Molecular Biology chemistry.chemical_compound Subcutaneous injection Corticotropin-releasing hormone Internal medicine Animals Medicine Rats Wistar Maze Learning Saline Anesthetics Behavior Animal business.industry Allopregnanolone General Medicine Rats Endocrinology chemistry Nasal administration medicine.symptom business Stress Psychological |
| Zdroj: | Bulletin of Experimental Biology and Medicine. 156:722-725 |
| ISSN: | 1573-8221 0007-4888 |
| DOI: | 10.1007/s10517-014-2433-0 |
| Popis: | We studied the effect of allopregnanolone on stress-induced anxiety caused by intranasal administration of corticoliberin to male Wistar rats. Active and passive rats were selected by their T-maze behavior and then were tested in elevated plus maze for initial anxiety level. Basing on test results, the animals were divided into following groups: active high-anxiety rats, active low-anxiety rats, and passive animals. Rats of the experimental subgroups received subcutaneous injection of allopregnanolone (0.2 mg/kg body weight), control animals received saline. In 30 min, all animals intranasally received corticoliberin (0.5 μg into each nostril) and then were tested in elevated plus maze. Passive animals demonstrated increased anxiety after corticoliberin administration against the background of allopregnanolone. Under the same conditions, low-anxiety rats demonstrated reduced anxiety, while in active high-anxiety animals, only an increase of motor activity was observed. Hence, the effect of allopregnanolone on anxiety level under stress conditions depends on individual typologic features of animal behavior. |
| Databáze: | OpenAIRE |
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