Mori K, Suda N, Togashi H, Matsumoto M, Saito H, Yoshioka M. Effects of bifemelane on incomplete cerebral ischaemia-induced reduction of long-term potentiation in rat hippocampal neurones in vivo.
PHARMACOLOGY & TOXICOLOGY 1999;
85:98-102. [PMID:
10488692 DOI:
10.1111/j.1600-0773.1999.tb00073.x]
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Abstract
In the present study, we investigated the effects of bifemelane on the reduction of hippocampal long-term potentiation after transient ischaemia. Bilateral common carotid arteries were clamped for 10 min. in halothane-anaesthetized rats. Thirty min. before occlusion, bifemelane (25 mg/kg, intraperitoneally) or saline was administered to the rats. Four days after occlusion, we measured long-term potentiation in Schaffer collateral-CA1 synapses and perforant path-dentate gyrus synapses in vivo. Long-term potentiation was significantly reduced in both the Schaffer collateral-CA1 and perforant path-dentate gyrus synapses in the saline-injected group. However bifemelane decreased the ischaemia-induced reduction of long-term potentiation in perforant path-dentate gyrus synapses, but not in Schaffer collateral-CA1 synapses. The findings suggest that bifemelane deserves further attention with regard to possible protective role in ischaemia.
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