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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Loreclezole and La3+ differentiate cerebellar granule cell GABA(A) receptor subtypes.

The effects of loreclezole and La3+ on native cerebellar GABA(A) receptors were compared between GABA(A) receptor alpha6 subunit-deficient (alpha6-/-) and wildtype mouse lines, produced through homologous recombination, using t-[35S]butylbicyclophosphorothionate ([35S]TBPS) autoradiography in brain sections. In the alpha6 subunit-deficient mice, the GABA receptor antagonistic ability of La3+ was abolished in the cerebellar granule cell layer, consistent with its opposite actions on alpha6- and of alpha1 subunit-containing receptors. La3+ significantly potentiated the action of GABA in the molecular layer of the alpha6-/- mice, but not in that of the wildtype mice. The potentiation of agonistic GABA inhibition of [35S]TBPS binding by loreclezole in alpha6-/- granule cells was reduced, suggesting an emergence of low-affinity GABA(A) receptors. The present results thus identified two ligands that may be useful in studying functional roles of cerebellar alpha1 and alpha6 subunit-containing GABA(A) receptor subtypes.[1]

References

  1. Loreclezole and La3+ differentiate cerebellar granule cell GABA(A) receptor subtypes. Mäkelä, R., Wisden, W., Korpi, E.R. Eur. J. Pharmacol. (1999) [Pubmed]
 
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