Title : A novel α-conotoxin MII-sensitive nicotinic acetylcholine receptor modulates [(3) H]-GABA release in the superficial layers of the mouse superior colliculus.

Pub. Date : 2012 Jul

PMID : 22506481






4 Functional Relationships(s)
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1 Acetylcholine-evoked [(3) H]-GABA release from SuSC crude synaptosomal preparations is calcium dependent, blocked by the voltage-sensitive calcium channel blocker, cadmium, and the nAChR antagonist mecamylamine, but is unaffected by muscarinic, glutamatergic, P2X and 5-HT3 receptor antagonists. gamma-Aminobutyric Acid cholinergic receptor, nicotinic, alpha polypeptide 7 Mus musculus
2 Approximately 50% of nAChR-mediated SuSC [(3) H]-GABA release is inhibited by alpha-conotoxin MII. gamma-Aminobutyric Acid cholinergic receptor, nicotinic, alpha polypeptide 7 Mus musculus
3 Together, these data suggest that a significant proportion of mouse SuSC nicotinic agonist-evoked GABA-release is mediated by a novel, alpha-conotoxin MII-sensitive alpha3alpha4beta2 nAChR. gamma-Aminobutyric Acid cholinergic receptor, nicotinic, alpha polypeptide 7 Mus musculus
4 The remaining alpha-conotoxin MII-resistant, nAChR agonist-evoked SuSC GABA release appears to be mediated via alpha4beta2* subtype nAChRs. gamma-Aminobutyric Acid cholinergic receptor, nicotinic, alpha polypeptide 7 Mus musculus