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- W2155669148 abstract "The dorsal and ventral hippocampi are functionally and anatomically distinct. Recently, we reported that dorsal Cornu Ammonis area 1 (CA1) neurons have a more hyperpolarized resting membrane potential and a lower input resistance and fire fewer action potentials for a given current injection than ventral CA1 neurons. Differences in the hyperpolarization-activated cyclic nucleotide-gated cation conductance between dorsal and ventral neurons have been reported, but these differences cannot fully account for the different resting properties of these neurons. Here, we show that coupling of A1 adenosine receptors (A1ARs) to G-protein-coupled inwardly rectifying potassium (GIRK) conductance contributes to the intrinsic membrane properties of dorsal CA1 neurons but not ventral CA1 neurons. The block of GIRKs with either barium or the more specific blocker Tertiapin-Q revealed that there is more resting GIRK conductance in dorsal CA1 neurons compared with ventral CA1 neurons. We found that the higher resting GIRK conductance in dorsal CA1 neurons was mediated by tonic A1AR activation. These results demonstrate that the different resting membrane properties between dorsal and ventral CA1 neurons are due, in part, to higher A1AR-mediated GIRK activity in dorsal CA1 neurons." @default.
- W2155669148 created "2016-06-24" @default.
- W2155669148 creator A5003399059 @default.
- W2155669148 creator A5010467709 @default.
- W2155669148 date "2015-04-01" @default.
- W2155669148 modified "2023-10-15" @default.
- W2155669148 title "A1 adenosine receptor-mediated GIRK channels contribute to the resting conductance of CA1 neurons in the dorsal hippocampus" @default.
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- W2155669148 doi "https://doi.org/10.1152/jn.00951.2014" @default.
- W2155669148 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4416607" @default.
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