Title : Memantine blocks alpha7* nicotinic acetylcholine receptors more potently than n-methyl-D-aspartate receptors in rat hippocampal neurons.

Pub. Date : 2005 Mar

PMID : 15522999






3 Functional Relationships(s)
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1 Memantine caused a concentration-dependent reduction of the amplitudes of whole-cell currents evoked by the alpha7(*) nAChR-selective agonist choline (10 mM) or by N-methyl-d-aspartate (NMDA) (50 muM) plus glycine (10 muM). Memantine cholinergic receptor nicotinic beta 1 subunit Rattus norvegicus
2 Memantine-induced alpha7(*) nAChR inhibition had an n(H) < 1 and showed a variable voltage dependence; the effect was voltage-independent at 0.1 muM, becoming voltage-dependent at >/=1 muM. Memantine cholinergic receptor nicotinic beta 1 subunit Rattus norvegicus
3 It is suggested that blockade of alpha7(*) nAChRs by memantine could decrease its effectiveness for treatment of AD, particularly at early stages when the degrees of nAChR dysfunction and of cognitive decline correlate well. Memantine cholinergic receptor nicotinic beta 1 subunit Rattus norvegicus