Structure-function-behavior relationship in estrogen-induced synaptic plasticity
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Structure-function-behavior relationship in estrogen-induced synaptic plasticity. / Vierk, R; Bayer, J; Freitag, S; Muhia, M; Kutsche, K; Wolbers, T; Kneussel, M; Sommer-Blöchl, Tobias; Rune, G M.
In: HORM BEHAV, Vol. 74, 08.2015, p. 139-48.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Structure-function-behavior relationship in estrogen-induced synaptic plasticity
AU - Vierk, R
AU - Bayer, J
AU - Freitag, S
AU - Muhia, M
AU - Kutsche, K
AU - Wolbers, T
AU - Kneussel, M
AU - Sommer-Blöchl, Tobias
AU - Rune, G M
N1 - Copyright © 2015 Elsevier Inc. All rights reserved.
PY - 2015/8
Y1 - 2015/8
N2 - This article is part of a Special Issue "Estradiol and Cognition". In estrogen-induced synaptic plasticity, a correlation of structure, function and behavior in the hippocampus has been widely established. 17ß-estradiol has been shown to increase dendritic spine density on hippocampal neurons and is accompanied by enhanced long-term potentiation and improved performance of animals in hippocampus-dependent memory tests. After inhibition of aromatase, the final enzyme of estradiol synthesis, with letrozole we consistently found a strong and significant impairment of long-term potentiation (LTP) in female mice as early as after six hours of treatment. LTP impairment was followed by loss of hippocampal spine synapses in the hippocampal CA1 area. Interestingly, these effects were not found in male animals. In the Morris water maze test, chronic administration of letrozole did not alter spatial learning and memory in either female or male mice. In humans, analogous effects of estradiol on hippocampal morphology and physiology were observed using neuroimaging techniques. However, similar to our findings in mice, an effect of estradiol on memory performance has not been consistently observed.
AB - This article is part of a Special Issue "Estradiol and Cognition". In estrogen-induced synaptic plasticity, a correlation of structure, function and behavior in the hippocampus has been widely established. 17ß-estradiol has been shown to increase dendritic spine density on hippocampal neurons and is accompanied by enhanced long-term potentiation and improved performance of animals in hippocampus-dependent memory tests. After inhibition of aromatase, the final enzyme of estradiol synthesis, with letrozole we consistently found a strong and significant impairment of long-term potentiation (LTP) in female mice as early as after six hours of treatment. LTP impairment was followed by loss of hippocampal spine synapses in the hippocampal CA1 area. Interestingly, these effects were not found in male animals. In the Morris water maze test, chronic administration of letrozole did not alter spatial learning and memory in either female or male mice. In humans, analogous effects of estradiol on hippocampal morphology and physiology were observed using neuroimaging techniques. However, similar to our findings in mice, an effect of estradiol on memory performance has not been consistently observed.
U2 - 10.1016/j.yhbeh.2015.05.008
DO - 10.1016/j.yhbeh.2015.05.008
M3 - SCORING: Journal article
C2 - 26012713
VL - 74
SP - 139
EP - 148
JO - HORM BEHAV
JF - HORM BEHAV
SN - 0018-506X
ER -