Abstract:
:gamma-Aminobutyric acidA (GABA(A)) gated chloride ion channels were expressed from human recombinant cDNA using the baculovirus/Sf-9 insect cell expression system. The electrophysiological effects in whole-cell currents of 5-(4-piperidyl) isoxazol-3-ol (4-PIOL), a GABA(A) receptor partial agonist, were investigated on GABA(A) receptor complexes of alpha1beta2gamma2S subunits as well as a slightly modified construct of alpha1(valine 121)beta2gamma2S subunits. Here we report that (1)4-PIOL induces an inward whole-cell current in a concentration-dependent manner in both alpha1(val 121)beta2gamma2S and alpha1(ile 121)beta2gamma2S receptor subunit combinations. (2) The 4-PIOL induced whole-cell currents were more pronounced in alpha1(val 121)beta2gamma2S than in alpha1(ile 121)beta2gamma2S receptor subunit combinations. (3) 4-PIOL inhibited GABA-induced responses on alpha1(ile 121)beta2gamma2S and alpha1(val 121)beta2gamma2S receptor combinations with similar potency.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Westh-Hansen SE,Noguchi K,Witt MR,Murai Y,Nielsen M,Akaike Ndoi
10.1016/s0304-3940(97)00473-4subject
Has Abstractpub_date
1997-07-11 00:00:00pages
45-8issue
1eissn
0304-3940issn
1872-7972pii
S0304-3940(97)00473-4journal_volume
230pub_type
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