β-Endorphin (0.03 to 1.00μg/kg, i.p., once) impairs retention of a one-trial inhibitory avoidance task in a dose-dependent manner in male Swiss mice immediately post-training. Also, it works in the process of memory consolidation[1].
| Animal Model: | Adult male Swiss mice (22-25 g)[1] |
| Dosage: | 0.03, 0.10, 0.30 or 1.00 μg/kg |
| Administration: | i.p., once |
| Result: | Significantly impaired retention at the doses of 0.03 and 0.10μg/kg while not significantly affect retention as compared with the control group at the two higher doses of 0.30 and 1.00μg/kg , but tended to increase retention as compared with the dose of 0.10μg/kg.
Increased latencies to step-through at the two higher doses of 0.30 and 1.00μg/kg but no effect at lower doses. |