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Estrogen attenuates cell death induced by carboxy-terminal fragment of amyloid precursor protein in PC12 through a receptor-dependent pathway

Authors
Chae, Hee-SunBach, Jae-HyungLee, Myoung-WooKim, Hye-SunKim, Yong-SikKim, Kyung YongChoo, Kwan YoungChoi, Se HoonPark, Cheol-HyoungLee, Sang HyungSuh, Yoo-HunKim, Sung SuLee, Won Bok
Issue Date
Sep-2001
Publisher
WILEY-LISS
Keywords
carboxy-terminal fragment of amyloid precursor; protein; Alzheimer's disease; 17β-estradiol; estrogen receptor; tamoxifen
Citation
JOURNAL OF NEUROSCIENCE RESEARCH, v.65, no.5, pp 403 - 407
Pages
5
Journal Title
JOURNAL OF NEUROSCIENCE RESEARCH
Volume
65
Number
5
Start Page
403
End Page
407
URI
https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/47236
DOI
10.1002/jnr.1167
ISSN
0360-4012
1097-4547
Abstract
In the present study, we investigated effects of estrogen on cell death induced by carboxy-terminal fragment of amyloid precursor protein (CT), a candidate causative substance in the pathogenesis of Alzheimer's disease. 17 beta -Estradiol attenuated CT-induced cell death in PC12 cells, whereas 17 alpha -estradiol, nonestrogenic stereoisomer, did not exert any significant protective effect on CT-induced cell death. These results suggest that protective effects of estrogen may be mediated by estrogen receptor (ER) in PC12 cells. To confirm the results, we determined the effects of tamoxifen, an estrogen receptor antagonist. Tamoxifen blocked the protective effects of 17 beta -estradiol, although it did not affect those of 17 alpha -estradiol. Overall, it might be thought that the protective effect of estradiol on CT-induced cell death is achieved by hormonal properties mediated through the estrogen receptor rather than the structural properties as a reducing agent. (C) 2001 Wiley-Liss, Inc.
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