Display Settings:

Format

Send to:

Choose Destination

    Pharmacol Rep. 2009 Mar-Apr;61(2):236-44.

    Influence of bupropion and calcium channel antagonists on the nicotine-induced memory-related response of mice in the elevated plus maze.

    Biała G, Kruk M.

    Department of Pharmacology and Pharmacodynamics, Medical University of Lublin, Staszica 4, PL 20-081 Lublin, Poland. grazyna.biala@am.lublin.pl

    In this study, we investigated the effects of acute administration of nicotine on memory-related behavior in mice using the elevated plus maze test. In this test, the time necessary for mice to move from the open arm to the enclosed arm (i.e., transfer latency) was used as an index of memory. Our results revealed that nicotine (0.035 and 0.175 mg/kg, base, sc) shortened the transfer latency relative to the saline-treated group. Moreover, we investigated the effects of bupropion (10, 20 and 40 mg/kg, ip) and L-type voltage-dependent calcium channel antagonists (nimodipine, flunarizine, verapamil, diltiazem - 5, 10 and 20 mg/kg, ip) on memory-related behavior. At all tested doses, bupropion, did not significantly affect transfer latency. However, flunarizine and verapamil (both at 10 mg/kg) resulted in a slight decrease in transfer latency, whereas nimodipine (10 mg/kg) increased transfer latency. Interestingly, both bupropion (20 mg/kg) and calcium channel blockers (5 mg/kg) attenuated the improvement of memory induced by nicotine. Our findings indicate that the cholinergic nicotinic system may play an important role in memory consolidation, and that neural calcium-dependent mechanisms can be involved in the modulation of memory-related responses induced by nicotine. The results of these studies have revealed neuronal mechanisms that are important for nicotinic modulation of cognition and will be useful for the treatments of human disorders in which cholinergic pathways have been implicated, such as psychiatric disorders and addiction.

    PMID: 19443934 [PubMed - indexed for MEDLINE]

    Supplemental Content

    Click here to read

    Patient drug information

    • Verapamil (Calan®, Calan® SR, Covera-HS®, ...)

      Verapamil is used to treat high blood pressure and to control angina (chest pain). The immediate-release tablets are also used alone or with other medications to prevent and treat irregular heartbeats. Verapamil is in a ...

    • Diltiazem (Cardizem®, Cardizem® CD, Cardizem® LA, ...)

      Diltiazem is used to treat high blood pressure and to control angina (chest pain). Diltiazem is in a class of medications called calcium-channel blockers. It works by relaxing the blood vessels so the heart does not have...

    • Nimodipine (Nimotop®)

      Nimodipine is used to treat symptoms resulting from a ruptured blood vessel in the brain (hemorrhage). It increases blood flow to injured brain tissue.

    • » See all 4 drug reports ...