Abstract:
:Prenatal stress (PS) induces cognitive deficits, abnormal behavior patterns and physical impairments in offspring, which disturbs the developmental process. GABA systems play a key role in the brain development. The developmental trajectories are less understood although PS increases the expression of GABAAR in young offspring. In the present study, we aimed to examine if the long-lasting effects on memory function and hippocampal synaptic plasticity induced by PS were associated with the GABA function throughout developmental process. Thus, a PS rat model was established by using restraint stress three 45-min periods per day from gestational day 15 until delivery. PS-exposed offspring exhibited the memory function deficits, LTP and depotentiation inhibitions in young and puberty offspring, but the disorder resolved at adult offspring. Meanwhile, the hippocampal spine density was decreased by PS in offspring. Additionally, we found that the balance of excitatory and inhibitory receptors was significantly disturbed after PS. The immunostaining of parvalbumin level was increased in the PS group. Overall, these all results suggest that the PS induces negative effects in memory and hippocampal synaptic plasticity in the early developmental stage, which could be an underlying mechanism of the disturbed GABA function.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Shang Y,Chen R,Li F,Zhang H,Wang H,Zhang Tdoi
10.1016/j.physbeh.2020.113184subject
Has Abstractpub_date
2021-01-01 00:00:00pages
113184eissn
0031-9384issn
1873-507Xpii
S0031-9384(20)30498-4journal_volume
228pub_type
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