Increased sensitivity to agonist-induced seizures, straub tail, and hippocampal theta rhythm in knock-in mice carrying hypersensitive alpha 4 nicotinic receptors.

Abstract excerpt

We studied a strain of exon replacement mice ("L9'S knock-in") whose alpha4 nicotinic receptor subunits have a leucine to serine mutation in the M2 region, 9' position (Labarca et al., 2001); this mutation renders alpha4-containing receptors hypersensitive to agonists. Nicotine induced seizures at concentrations (1 mg/kg) approximately eight times lower in L9'S than in wild-type (WT) littermates. At these...

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