ArticleIBRO neuroscience reports2023
Electrical impulses evoked activity patterns in ventral tegmental area and locus coeruleus modulate endogenous and learning-dependent disparity of cell proliferation along the mouse dentate gyrus.
Article in IBRO neuroscience reports, 2023. 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
This study aimed to examine the effects of the ventral tegmental area (VTA) and the locus coeruleus (LC) patterned electrical stimulation on hippocampal-dependent learning and hippocampal neurogenesis in adult mouse. For this, mice were given unilateral electrical stimulation of VTA or LC using phasic or tonic stimulation protocols. Behavior acquisition rates were evaluated using the Barnes maze (BM) and a passive avoidance (PA) task. Cell proliferation was measured in the dorsal (dDG), intermediate (iDG) and ventral (vDG) dentate gyrus (DG) using Ki67 immunohistochemistry. We showed that the levels of cell proliferation were significantly different in three highlighted parts of the DG. The behavioral testing paradigms themselves were sufficient to alter cell proliferation indices along the dentate gyrus. The phasic LC modulation treatment enhanced behavioral acquisition of the BM and cell proliferation in the dDG, while tonic VTA stimulation improved PA acquisition and increased cell proliferation in the iDG. It is concluded that electrical impulses-evoked phasic or tonic activity patterns in the LC and VTA could modulate endogenous and learning dependent disparity of cell proliferation along the adult mouse DG.
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