کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6256792 | 1612948 | 2015 | 8 صفحه PDF | دانلود رایگان |
- Diazepam and flunitrazepam impaired recognition memory of rats.
- l-Arginine prevented diazepam-induced memory impairment.
- 7-Nitroindazole induced the amnesic effects of diazepam.
- 7-Nitroindazole inhibited the amnesic effects of flunitrazepam.
The goal of the study was an evaluation of the degree, in which nitric oxide (NO) is involved in the benzodiazepines (BZs)-induced recognition memory impairment in rats. The novel object recognition (NOR) test was used to examine recognition memory. The current research focused on the object memory impairing effects of diazepam (DZ; 0.5 and 1Â mg/kg, sc) and flunitrazepam (FNZ; 0.1 and 0.2Â mg/kg; sc) in 1-hour delay periods in rats. It was found that acute ip injection of l-arginine (l-arg; 250 and 500Â mg/kg; ip), 5Â min before DZ administration (0.5Â mg/kg, sc) prevented DZ-induced memory deficits. On the other hand, it was also proven that l-arg (125, 250 and 500Â mg/kg; ip) did not change the behaviour of rats in the NOR test, following a combined administration with FNZ at a threshold dose (0.05Â mg/kg; sc). It was also found that 7-nitroindazole (7-NI; 10, 20 and 40Â mg/kg; ip) induced amnesic effects in DZ in rats, submitted to the NOR test, following a combined administration of 7-NI with a threshold dose of DZ (0.25Â mg/kg; sc). However, following a combined administration of 7-NI (10, 20 and 40Â mg/kg; ip) with FNZ (0.1Â mg/kg; sc), it was observed that 7-NI inhibited the amnesic effects of FNZ on rats in the NOR test.Those findings led us to hypothesize that NO synthesis suppression may induce amnesic effects of DZ, while preventing FNZ memory impairment in rats, submitted to NOR tasks.
Journal: Behavioural Brain Research - Volume 284, 1 May 2015, Pages 179-186