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• W2893001433 abstract "Age and estrogens may impact the mobility of N-methyl-D-aspartate receptors (NMDARs) in hippocampal synapses. Here, we used serial section immunogold electron microscopy to examine whether phosphorylated tyrosine 1472 NR2B (pY1472), which is involved in the surface expression of NMDARs, is altered in the dorsal hippocampus of young (3–4 months old) and aged (∼24 months old) ovariectomized rats treated with 17β-estradiol or vehicle for 2 days. The number of gold particles labeling pY1472 was higher in presynaptic and postsynaptic compartments of aged rats with low estradiol (vehicle-treated) compared to other groups. In terminals, pY1472 levels were elevated in aged rats but reduced by estradiol treatment to levels seen in young rats. Conversely, the mitochondria number was lower in aged females but was restored to young levels by estradiol. In the postsynaptic density and dendritic spines, estradiol reduced pY1472 in young and aged rats. As phosphorylation at Y1472 blocks NR2B endocytosis, reduction of pY1472 by estradiol suggests another mechanism through which estrogen enhances synaptic plasticity by altering localization of NMDAR subunits within synapses." @default.
• W2893001433 created "2018-10-05" @default.
• W2893001433 creator A5021289576 @default.
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• W2893001433 creator A5055529660 @default.
• W2893001433 creator A5087247030 @default.
• W2893001433 date "2019-01-01" @default.
• W2893001433 modified "2023-10-15" @default.
• W2893001433 title "Effects of estrogen and aging on synaptic morphology and distribution of phosphorylated Tyr1472 NR2B in the female rat hippocampus" @default.
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• W2893001433 doi "https://doi.org/10.1016/j.neurobiolaging.2018.09.025" @default.
• W2893001433 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30384123" @default.
• W2893001433 hasPublicationYear "2019" @default.
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