ArticleScientific reports2025
Modulation of dorsal hippocampal SK2 channels regulates morphine-enhanced neuronal oscillations and morphine-induced contextual memory encoding and retrieval.
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Persistent maladaptive drug-context associations are a key component of relapse vulnerability and pose a major obstacle in treating opioid use disorder. Although the dorsal hippocampus (dHPC) is critical for contextual memory formation, the synaptic mechanisms by which opioids alter hippocampal circuits to sustain these associations remain unclear. We previously found that repeated context-paired morphine exposure impairs dHPC long-term potentiation (LTP) through enhanced activity of small-conductance calcium-activated potassium (SK2) channels. Here, we investigated the role of SK2 channels in morphine-context associative learning and memory by combining in vivo electrophysiology, molecular analyses, and behavioral pharmacology with the morphine-conditioned place preference (MorCPP) paradigm in male mice. Manipulation of SK2 channels with either SK2 blocker Lei-Dab
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