並列タイトル等マウス内側前頭前野の高速スパイク型parvalbumin発現介在ニューロンの特定のサブタイプへの幼少期社会的孤立直後の影響
一般注記type:Thesis
A lack of juvenile social experience causes various behavioral impairments and brain dysfunction, especially in the medial prefrontal cortex (mPFC). Our previous studies revealed that juvenile social isolation for two weeks immediately after weaning affects the synaptic inputs and intrinsic excitability of fast-spiking parvalbumin-expressing (FSPV) interneurons as well as a specific type of layer 5 (L5) pyramidal cells, which we termed prominent h-current (PH) cells, in the mPFC. However, since these changes were observed at the adult age of postnatal day 65 (P65), the primary cause of these changes to neurons immediately after juvenile social isolation (postnatal day 35) remains unknown. Here, we investigated the immediate effects of juvenile social isolation on the excitability and synaptic inputs of PH pyramidal cells and FSPV interneurons at P35 using whole-cell patch-clamp recording. We observed that excitatory inputs to FSPV interneurons increased immediately after juvenile social isolation. We also found that juvenile social isolation increases the firing reactivity of a subtype of FSPV interneurons, while only a fractional effect was detected in PH pyramidal cells. These findings suggest that juvenile social isolation primarily disturbs the developmental rebuilding of circuits involving FSPV interneurons and eventually affects the circuits involving PH pyramidal cells in adulthood.
権利情報:© The Author(s) 2022. Published by Oxford University Press. All rights reserved. This is a pre-copyedited, author-produced version of an article accepted for publication in [Cerebral Cortex] following peer review. The version of record [Cereb Cortex. 2023; 33(7): 3591-3606.] is available online at: https://doi.org/10.1093/cercor/bhac294
identifier:Cerebral Cortex. 2023 Mar, vol.33, no.7, p.3591-3606
identifier:1047-3211
identifier:http://ginmu.naramed-u.ac.jp/dspace/handle/10564/4374
identifier:Cerebral Cortex, 33(7): 3591-3606
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