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- W2024280222 abstract "We examined the effects of progesterone on frequency of miniature excitatory postsynaptic currents (mEPSCs) and spontaneous excitatory postsynaptic currents (sEPSCs), and dopamine-induced increase in the frequency of sEPSCs in pyramidal cells of layers V–VI of the rat prelimbic cortex using whole-cell patch-clamp techniques in slices. The results showed that progesterone 100 μM had no effects on the frequency of mEPSCs and sEPSCs, but significantly inhibited dopamine-induced increase in frequency of sEPSCs. This was in contrast to the effect of progesterone on the effect of 5-HT, which showed no changes after progesterone. When studying the mechanism of the progesterone effect, we observed that GABAA receptor antagonist and progesterone receptor antagonist did not influence the effect of progesterone; progesterone had no effects on D1 receptor agonist, protein kinase A and protein kinase C activator-induced increase in the frequency of sEPSCs. Interestingly, σ1 receptor antagonist could inhibit the effect of dopamine and σ1 receptor agonist had a synergistic effect on the effect of D1 receptor agonist. These results suggest that progesterone may inhibit dopamine-induced increase in frequency of sEPSCs in rat prelimbic cortical neurons via inhibition of σ1/D1 receptor synergism because progesterone has been known to be an antagonist of σ1 receptor." @default.
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- W2024280222 date "2004-02-01" @default.
- W2024280222 modified "2023-10-17" @default.
- W2024280222 title "Progesterone inhibition of dopamine-induced increase in frequency of spontaneous excitatory postsynaptic currents in rat prelimbic cortical neurons" @default.
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- W2024280222 doi "https://doi.org/10.1016/j.neuropharm.2003.08.002" @default.
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