Linear and inverted U-shaped dose-response functions describe estrogen effects on hippocampal activity in young women
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Linear and inverted U-shaped dose-response functions describe estrogen effects on hippocampal activity in young women. / Bayer, Janine; Gläscher, Jan; Finsterbusch, Jürgen; Schulte, Laura H; Sommer, Tobias.
in: NAT COMMUN, Jahrgang 9, Nr. 1, 23.03.2018, S. 1220.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Linear and inverted U-shaped dose-response functions describe estrogen effects on hippocampal activity in young women
AU - Bayer, Janine
AU - Gläscher, Jan
AU - Finsterbusch, Jürgen
AU - Schulte, Laura H
AU - Sommer, Tobias
PY - 2018/3/23
Y1 - 2018/3/23
N2 - In animals, 17-beta-estradiol (E2) enhances hippocampal plasticity in a dose-dependent, monotonically increasing manner, but this relationship can also exhibit an inverted U-shaped function. To investigate E2's dose-response function in the human hippocampus, we pharmacologically increased E2 levels in 125 naturally cycling women (who were in their low-hormone menstruation phase) to physiological (equivalent to menstrual cycle peak) and supraphysiological (equivalent to levels during early pregnancy) concentrations in a placebo-controlled design. Twenty-four hours after first E2 intake, we measured brain activity during encoding of neutral and negative pictures and then tested recognition memory 24 h after encoding. Here we report that E2 exhibits both a monotonically increasing relationship with hippocampal activity as well as an inverted U-shaped relationship, depending on the hippocampal region. Hippocampal activity exhibiting a U-shaped relationship inflects at supraphysiological E2 levels, suggesting that while E2 within physiological ranges stimulates hippocampal activity, supraphysiological ranges show opposite effects.
AB - In animals, 17-beta-estradiol (E2) enhances hippocampal plasticity in a dose-dependent, monotonically increasing manner, but this relationship can also exhibit an inverted U-shaped function. To investigate E2's dose-response function in the human hippocampus, we pharmacologically increased E2 levels in 125 naturally cycling women (who were in their low-hormone menstruation phase) to physiological (equivalent to menstrual cycle peak) and supraphysiological (equivalent to levels during early pregnancy) concentrations in a placebo-controlled design. Twenty-four hours after first E2 intake, we measured brain activity during encoding of neutral and negative pictures and then tested recognition memory 24 h after encoding. Here we report that E2 exhibits both a monotonically increasing relationship with hippocampal activity as well as an inverted U-shaped relationship, depending on the hippocampal region. Hippocampal activity exhibiting a U-shaped relationship inflects at supraphysiological E2 levels, suggesting that while E2 within physiological ranges stimulates hippocampal activity, supraphysiological ranges show opposite effects.
KW - Journal Article
U2 - 10.1038/s41467-018-03679-x
DO - 10.1038/s41467-018-03679-x
M3 - SCORING: Journal article
C2 - 29572476
VL - 9
SP - 1220
JO - NAT COMMUN
JF - NAT COMMUN
SN - 2041-1723
IS - 1
ER -